Release v1.3.3

Merge pull request #123 from SCENEE/fix-cut-off-by-mask
Expand the surface mask's height
2019-02-02 11:38:37 +09:00 · 2019-02-02 11:37:20 +09:00 · 2019-02-01 10:19:51 +09:00 · 2019-01-31 19:22:46 +09:00 · 2019-01-31 12:48:36 +09:00 · 2019-01-30 13:09:04 +09:00
19 changed files with 1582 additions and 588 deletions
@@ -0,0 +1,27 @@
+> Please fill out this template when filing an issue.
+>
+> Please remove this line and everything above it before submitting.
+
+### Short description
+
+### Expected behavior
+
+### Actual behavior
+
+### Steps to reproduce
+
+**Code example that reproduces the issue**
+
+### Environment
+
+**Library version**
+
+**Installation method**
+
+- [ ] CocoaPods
+- [ ] Carthage
+- [ ] Git submodules
+
+**iOS version(s)**
+
+**Xcode version**
@@ -2,12 +2,13 @@ language: swift
 branches:
  only:
    - master
+    - next
 cache:
  directories:
-  - build
-  - vendor
  - /usr/local/Homebrew
  - $HOME/Library/Caches/Homebrew
+before_cache:
+  - brew cleanup
 env:
  global:
  - LANG=en_US.UTF-8
@@ -15,7 +16,17 @@ env:
 skip_cleanup: true
 jobs:
  include:
-  - stage: carthage
+  - stage: Build framework(swift 4.1)
+    osx_image: xcode9.4
+    script:
+    - xcodebuild -scheme FloatingPanel clean build
+
+  - stage: Build framework(swift 4.2)
+    osx_image: xcode10
+    script:
+    - xcodebuild -scheme FloatingPanel clean build
+
+  - stage: Carthage
    osx_image: xcode10
    before_install:
    - brew update
@@ -23,22 +34,22 @@ jobs:
    script:
    - carthage build --no-skip-current

-  - stage: podspec
+  - stage: Podspec
    osx_image: xcode10
    script:
    - pod spec lint

-  - stage: check Maps example
+  - stage: Build maps example
    osx_image: xcode10
    script:
    - xcodebuild -scheme Maps -sdk iphonesimulator clean build

-  - stage: check Stocks example
+  - stage: Build stocks example
    osx_image: xcode10
    script:
    - xcodebuild -scheme Stocks -sdk iphonesimulator clean build

-  - stage: check Samples example
+  - stage: Build samples example
    osx_image: xcode10
    script:
    - xcodebuild -scheme Samples -sdk iphonesimulator clean build
@@ -165,6 +165,7 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 545DBA1221511E6400CA77B8 /* Build configuration list for PBXNativeTarget "Samples" */;
 			buildPhases = (
+				54D7209621D4DB970054A255 /* ShellScript */,
 				545DB9E621511E6300CA77B8 /* Sources */,
 				545DB9E721511E6300CA77B8 /* Frameworks */,
 				545DB9E821511E6300CA77B8 /* Resources */,
@@ -285,6 +286,26 @@
 		};
 /* End PBXResourcesBuildPhase section */

+/* Begin PBXShellScriptBuildPhase section */
+		54D7209621D4DB970054A255 /* ShellScript */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+			);
+			outputFileListPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "/usr/libexec/PlistBuddy -c \"Set :CFBundleVersion $(git rev-parse --abbrev-ref HEAD)($(git rev-parse --short HEAD))\" $SRCROOT/$INFOPLIST_FILE\n";
+		};
+/* End PBXShellScriptBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
 		545DB9E621511E6300CA77B8 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="RoN-h0-uBD">
-    <device id="retina4_7" orientation="portrait">
+    <device id="retina5_9" orientation="portrait">
        <adaptation id="fullscreen"/>
    </device>
    <dependencies>
@@ -14,8 +14,8 @@
        <scene sceneID="Cjh-iX-VQw">
            <objects>
                <navigationController id="RoN-h0-uBD" sceneMemberID="viewController">
-                    <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="hNW-5m-Omi">
-                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" largeTitles="YES" id="hNW-5m-Omi">
+                        <rect key="frame" x="0.0" y="44" width="375" height="96"/>
                        <autoresizingMask key="autoresizingMask"/>
                    </navigationBar>
                    <connections>
@@ -31,22 +31,22 @@
            <objects>
                <viewController id="jF4-A0-Eq6" customClass="SampleListViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
                    <view key="view" contentMode="scaleToFill" id="Smh-Bd-AAc">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="812"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
                            <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="7IS-PU-x0P">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                                <rect key="frame" x="0.0" y="0.0" width="375" height="778"/>
                                <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                                <prototypes>
                                    <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="default" indentationWidth="10" reuseIdentifier="Cell" textLabel="M0G-C8-hAO" style="IBUITableViewCellStyleDefault" id="ySY-oA-g81">
                                        <rect key="frame" x="0.0" y="28" width="375" height="44"/>
                                        <autoresizingMask key="autoresizingMask"/>
                                        <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" preservesSuperviewLayoutMargins="YES" insetsLayoutMarginsFromSafeArea="NO" tableViewCell="ySY-oA-g81" id="sXB-nH-2g2">
-                                            <rect key="frame" x="0.0" y="0.0" width="375" height="43.5"/>
+                                            <rect key="frame" x="0.0" y="0.0" width="375" height="43.666666666666664"/>
                                            <autoresizingMask key="autoresizingMask"/>
                                            <subviews>
                                                <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" insetsLayoutMarginsFromSafeArea="NO" text="Title" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="M0G-C8-hAO">
-                                                    <rect key="frame" x="15" y="0.0" width="345" height="43.5"/>
+                                                    <rect key="frame" x="15" y="0.0" width="345" height="43.666666666666664"/>
                                                    <autoresizingMask key="autoresizingMask"/>
                                                    <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                                    <nil key="textColor"/>
@@ -61,13 +61,19 @@
                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                        <constraints>
                            <constraint firstItem="7IS-PU-x0P" firstAttribute="top" secondItem="Smh-Bd-AAc" secondAttribute="top" id="6yd-jv-ey3"/>
-                            <constraint firstItem="7IS-PU-x0P" firstAttribute="leading" secondItem="TkN-Oh-wF8" secondAttribute="leading" id="Z6Y-Dc-cei"/>
-                            <constraint firstItem="7IS-PU-x0P" firstAttribute="bottom" secondItem="TkN-Oh-wF8" secondAttribute="bottom" id="fNW-DP-lhV"/>
-                            <constraint firstItem="7IS-PU-x0P" firstAttribute="trailing" secondItem="TkN-Oh-wF8" secondAttribute="trailing" id="vfY-Rc-FOI"/>
+                            <constraint firstItem="7IS-PU-x0P" firstAttribute="leading" secondItem="39L-Nq-qfp" secondAttribute="leading" id="Z6Y-Dc-cei"/>
+                            <constraint firstItem="7IS-PU-x0P" firstAttribute="bottom" secondItem="39L-Nq-qfp" secondAttribute="bottom" id="fNW-DP-lhV"/>
+                            <constraint firstItem="7IS-PU-x0P" firstAttribute="trailing" secondItem="39L-Nq-qfp" secondAttribute="trailing" id="vfY-Rc-FOI"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="TkN-Oh-wF8"/>
+                        <viewLayoutGuide key="safeArea" id="39L-Nq-qfp"/>
                    </view>
-                    <navigationItem key="navigationItem" title="Samples" id="wCF-su-7up"/>
+                    <navigationItem key="navigationItem" title="Samples" id="wCF-su-7up">
+                        <barButtonItem key="rightBarButtonItem" title="Settings" id="rbH-U3-XyA">
+                            <connections>
+                                <action selector="showDebugMenu:" destination="jF4-A0-Eq6" id="j02-db-ZM5"/>
+                            </connections>
+                        </barButtonItem>
+                    </navigationItem>
                    <connections>
                        <outlet property="tableView" destination="7IS-PU-x0P" id="YFM-9W-eP4"/>
                    </connections>
@@ -76,22 +82,96 @@
            </objects>
            <point key="canvasLocation" x="57" y="27"/>
        </scene>
-        <!--Item 2-->
+        <!--Settings View Controller-->
+        <scene sceneID="Bd0-D2-agO">
+            <objects>
+                <viewController storyboardIdentifier="SettingsViewController" id="C1X-9Z-TyQ" customClass="SettingsViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="af9-Zr-Ppc">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="197.33000000000001"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" distribution="fillProportionally" alignment="center" spacing="16" translatesAutoresizingMaskIntoConstraints="NO" id="n93-ZL-fmC">
+                                <rect key="frame" x="32" y="16" width="311" height="147.33333333333334"/>
+                                <subviews>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Version: 1.0" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="WmC-Tq-NDN">
+                                        <rect key="frame" x="118.33333333333334" y="0.0" width="74.333333333333343" height="17"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                        <nil key="textColor"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="UINavigationBar" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Ulg-gS-ah0">
+                                        <rect key="frame" x="90.666666666666686" y="33" width="130" height="20.333333333333329"/>
+                                        <fontDescription key="fontDescription" style="UICTFontTextStyleHeadline"/>
+                                        <nil key="textColor"/>
+                                        <nil key="highlightedColor"/>
+                                    </label>
+                                    <stackView opaque="NO" contentMode="scaleToFill" alignment="center" spacing="126" translatesAutoresizingMaskIntoConstraints="NO" id="uEf-g4-CeU">
+                                        <rect key="frame" x="23.333333333333343" y="69.333333333333329" width="264.33333333333326" height="31"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Large Titles" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ogl-S5-4tJ">
+                                                <rect key="frame" x="0.0" y="5.3333333333333428" width="89.333333333333329" height="20.333333333333332"/>
+                                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                                <nil key="textColor"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="js8-Qv-lUC">
+                                                <rect key="frame" x="215.33333333333334" y="0.0" width="51.000000000000028" height="31"/>
+                                                <connections>
+                                                    <action selector="toggleLargeTitle:" destination="C1X-9Z-TyQ" eventType="valueChanged" id="FJS-Ty-mCY"/>
+                                                </connections>
+                                            </switch>
+                                        </subviews>
+                                    </stackView>
+                                    <stackView opaque="NO" contentMode="scaleToFill" spacing="126" translatesAutoresizingMaskIntoConstraints="NO" id="ZtZ-Dz-4cC">
+                                        <rect key="frame" x="23.333333333333343" y="116.33333333333334" width="264.66666666666663" height="31"/>
+                                        <subviews>
+                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Translucent" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Z5i-rm-QgL">
+                                                <rect key="frame" x="0.0" y="0.0" width="89.666666666666671" height="31"/>
+                                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                                <nil key="textColor"/>
+                                                <nil key="highlightedColor"/>
+                                            </label>
+                                            <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="s6b-j9-8Kw">
+                                                <rect key="frame" x="215.66666666666666" y="0.0" width="50.999999999999972" height="31"/>
+                                                <connections>
+                                                    <action selector="toggleTranslucent:" destination="C1X-9Z-TyQ" eventType="valueChanged" id="nL4-3L-9hh"/>
+                                                </connections>
+                                            </switch>
+                                        </subviews>
+                                    </stackView>
+                                </subviews>
+                            </stackView>
+                        </subviews>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <constraints>
+                            <constraint firstItem="0hr-ty-yWm" firstAttribute="bottom" secondItem="n93-ZL-fmC" secondAttribute="bottom" id="2Ey-ou-E1M"/>
+                            <constraint firstAttribute="trailing" secondItem="n93-ZL-fmC" secondAttribute="trailing" constant="32" id="DdZ-eB-F5s"/>
+                            <constraint firstItem="n93-ZL-fmC" firstAttribute="leading" secondItem="af9-Zr-Ppc" secondAttribute="leading" constant="32" id="TyK-GP-Ari"/>
+                            <constraint firstItem="n93-ZL-fmC" firstAttribute="top" secondItem="af9-Zr-Ppc" secondAttribute="topMargin" constant="16" id="mbC-6H-z9M"/>
+                        </constraints>
+                        <viewLayoutGuide key="safeArea" id="0hr-ty-yWm"/>
+                    </view>
+                    <size key="freeformSize" width="375" height="197.33000000000001"/>
+                    <connections>
+                        <outlet property="largeTitlesSwicth" destination="js8-Qv-lUC" id="FOm-6k-ffi"/>
+                        <outlet property="translucentSwicth" destination="s6b-j9-8Kw" id="jmf-WH-bzZ"/>
+                        <outlet property="versionLabel" destination="WmC-Tq-NDN" id="Woh-kK-U0m"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="M9h-4V-3M0" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="708" y="-200"/>
+        </scene>
+        <!--Layout 2-->
        <scene sceneID="lRc-OZ-sL4">
            <objects>
                <viewController id="RpE-lI-27a" customClass="TabBarContentViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
                    <view key="view" contentMode="scaleToFill" id="JER-jz-KSq">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="812"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Item 2" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="AiP-dx-mFn">
-                                <rect key="frame" x="163.5" y="323" width="48" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="IvG-yp-yzI">
-                                <rect key="frame" x="20" y="20" width="39" height="30"/>
+                                <rect key="frame" x="20" y="44" width="39" height="30"/>
                                <state key="normal" title="Close"/>
                                <connections>
                                    <action selector="closeWithSender:" destination="RpE-lI-27a" eventType="touchUpInside" id="hj3-Xv-6Gq"/>
@@ -101,35 +181,59 @@
                        </subviews>
                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                        <constraints>
-                            <constraint firstItem="IvG-yp-yzI" firstAttribute="top" secondItem="2Cd-km-qEk" secondAttribute="top" id="18k-sV-PgT"/>
-                            <constraint firstItem="AiP-dx-mFn" firstAttribute="centerY" secondItem="JER-jz-KSq" secondAttribute="centerY" id="NUc-tM-0dN"/>
-                            <constraint firstItem="AiP-dx-mFn" firstAttribute="centerX" secondItem="JER-jz-KSq" secondAttribute="centerX" id="hwP-mu-Vmz"/>
-                            <constraint firstItem="IvG-yp-yzI" firstAttribute="leading" secondItem="2Cd-km-qEk" secondAttribute="leading" constant="20" id="pYt-jE-CTF"/>
+                            <constraint firstItem="IvG-yp-yzI" firstAttribute="top" secondItem="954-Dk-zvc" secondAttribute="top" id="18k-sV-PgT"/>
+                            <constraint firstItem="954-Dk-zvc" firstAttribute="trailing" relation="greaterThanOrEqual" secondItem="IvG-yp-yzI" secondAttribute="trailing" id="mpr-u5-MZu"/>
+                            <constraint firstItem="IvG-yp-yzI" firstAttribute="leading" secondItem="954-Dk-zvc" secondAttribute="leading" constant="20" id="pYt-jE-CTF"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="2Cd-km-qEk"/>
+                        <viewLayoutGuide key="safeArea" id="954-Dk-zvc"/>
                    </view>
-                    <tabBarItem key="tabBarItem" tag="1" title="Item 2" id="qb3-RB-B28"/>
+                    <tabBarItem key="tabBarItem" tag="1" title="Layout 2" id="qb3-RB-B28"/>
                </viewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="NhZ-u5-Beh" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="326" y="1575"/>
+            <point key="canvasLocation" x="-308" y="1546"/>
        </scene>
-        <!--Item 1-->
+        <!--Layout 3-->
+        <scene sceneID="r9h-Ql-gIv">
+            <objects>
+                <viewController id="pOk-Zm-vD9" customClass="TabBarContentViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="85d-ub-G8k">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="812"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="NbG-e8-HdI">
+                                <rect key="frame" x="20" y="44" width="39" height="30"/>
+                                <state key="normal" title="Close"/>
+                                <connections>
+                                    <action selector="closeWithSender:" destination="pOk-Zm-vD9" eventType="touchUpInside" id="111-PD-Pop"/>
+                                    <action selector="closeWithSender:" destination="bYI-y3-Rzb" eventType="touchUpInside" id="1Rg-YG-TtU"/>
+                                </connections>
+                            </button>
+                        </subviews>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <constraints>
+                            <constraint firstItem="0ao-SI-QZW" firstAttribute="trailing" relation="greaterThanOrEqual" secondItem="NbG-e8-HdI" secondAttribute="trailing" id="K9F-6x-KWn"/>
+                            <constraint firstItem="NbG-e8-HdI" firstAttribute="top" secondItem="0ao-SI-QZW" secondAttribute="top" id="nsE-so-rTl"/>
+                            <constraint firstItem="NbG-e8-HdI" firstAttribute="leading" secondItem="0ao-SI-QZW" secondAttribute="leading" constant="20" id="sF4-Dm-aoY"/>
+                        </constraints>
+                        <viewLayoutGuide key="safeArea" id="0ao-SI-QZW"/>
+                    </view>
+                    <tabBarItem key="tabBarItem" tag="2" title="Layout 3" id="RJD-TF-Sdh"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Oe3-FT-q1C" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="332" y="1546"/>
+        </scene>
+        <!--Layout 1-->
        <scene sceneID="m6X-j6-yBM">
            <objects>
                <viewController id="lto-Zc-Vtp" customClass="TabBarContentViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
                    <view key="view" contentMode="scaleToFill" id="ji9-Ez-N7i">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="812"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Item 1" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="uoW-c8-9wx">
-                                <rect key="frame" x="164.5" y="323" width="46" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="eFN-tN-4Ct">
-                                <rect key="frame" x="20" y="20" width="39" height="30"/>
+                                <rect key="frame" x="20" y="44" width="39" height="30"/>
                                <state key="normal" title="Close"/>
                                <connections>
                                    <action selector="closeWithSender:" destination="bYI-y3-Rzb" eventType="touchUpInside" id="YL4-GP-ZEZ"/>
@@ -139,18 +243,47 @@
                        </subviews>
                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                        <constraints>
-                            <constraint firstItem="eFN-tN-4Ct" firstAttribute="leading" secondItem="f88-U8-Vja" secondAttribute="leading" constant="20" id="5BT-yZ-EKe"/>
-                            <constraint firstItem="uoW-c8-9wx" firstAttribute="centerY" secondItem="ji9-Ez-N7i" secondAttribute="centerY" id="Nyw-Wt-78z"/>
-                            <constraint firstItem="eFN-tN-4Ct" firstAttribute="top" secondItem="f88-U8-Vja" secondAttribute="top" id="hUV-3a-XkY"/>
-                            <constraint firstItem="uoW-c8-9wx" firstAttribute="centerX" secondItem="ji9-Ez-N7i" secondAttribute="centerX" id="wDv-OH-7PX"/>
+                            <constraint firstItem="eFN-tN-4Ct" firstAttribute="leading" secondItem="5Ns-4l-Ufg" secondAttribute="leading" constant="20" id="5BT-yZ-EKe"/>
+                            <constraint firstItem="5Ns-4l-Ufg" firstAttribute="trailing" relation="greaterThanOrEqual" secondItem="eFN-tN-4Ct" secondAttribute="trailing" id="OzZ-Dz-RNF"/>
+                            <constraint firstItem="eFN-tN-4Ct" firstAttribute="top" secondItem="5Ns-4l-Ufg" secondAttribute="top" id="hUV-3a-XkY"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="f88-U8-Vja"/>
+                        <viewLayoutGuide key="safeArea" id="5Ns-4l-Ufg"/>
                    </view>
-                    <tabBarItem key="tabBarItem" title="Item 1" id="HEV-kf-jxH"/>
+                    <tabBarItem key="tabBarItem" title="Layout 1" id="HEV-kf-jxH"/>
                </viewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="bkL-bc-hZC" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="-380" y="1576"/>
+            <point key="canvasLocation" x="-962" y="1546"/>
+        </scene>
+        <!--Intrinsic View Controller-->
+        <scene sceneID="wtJ-qZ-aCl">
+            <objects>
+                <viewController storyboardIdentifier="IntrinsicViewController" title="Intrinsic View Controller" id="aK0-kv-mTu" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="eLM-xc-d9e">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="778"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="1000" verticalHuggingPriority="1000" horizontalCompressionResistancePriority="1000" verticalCompressionResistancePriority="1000" text="Change this text" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ge4-RW-Gmz">
+                                <rect key="frame" x="24" y="24" width="327" height="20.333333333333329"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                        </subviews>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <constraints>
+                            <constraint firstAttribute="trailing" secondItem="ge4-RW-Gmz" secondAttribute="trailing" constant="24" id="V59-MD-Lcg"/>
+                            <constraint firstItem="ge4-RW-Gmz" firstAttribute="leading" secondItem="eLM-xc-d9e" secondAttribute="leading" constant="24" id="hAO-P0-7Kw"/>
+                            <constraint firstItem="ge4-RW-Gmz" firstAttribute="top" secondItem="eLM-xc-d9e" secondAttribute="top" constant="24" id="j0s-fd-MYj"/>
+                            <constraint firstAttribute="bottom" relation="greaterThanOrEqual" secondItem="ge4-RW-Gmz" secondAttribute="bottom" constant="24" id="tEn-PO-nVD"/>
+                        </constraints>
+                        <viewLayoutGuide key="safeArea" id="ouu-g9-OiX"/>
+                    </view>
+                    <size key="freeformSize" width="375" height="778"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="DfE-fL-zy5" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="2753" y="734"/>
        </scene>
        <!--Tab Bar View Controller-->
        <scene sceneID="nQ5-PV-qFw">
@@ -164,33 +297,34 @@
                    <connections>
                        <segue destination="lto-Zc-Vtp" kind="relationship" relationship="viewControllers" id="6hP-AH-YiH"/>
                        <segue destination="RpE-lI-27a" kind="relationship" relationship="viewControllers" id="g6X-Sq-uSW"/>
+                        <segue destination="pOk-Zm-vD9" kind="relationship" relationship="viewControllers" id="OPp-iO-iDK"/>
                    </connections>
                </tabBarController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="Z9x-EI-p2b" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="-183" y="806"/>
+            <point key="canvasLocation" x="-706" y="749"/>
        </scene>
        <!--Modal View Controller-->
        <scene sceneID="C9P-Ns-Qrq">
            <objects>
                <viewController storyboardIdentifier="ModalViewController" id="bYI-y3-Rzb" customClass="ModalViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
                    <view key="view" contentMode="scaleToFill" id="qwo-GK-p1U">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="778"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="vut-mK-Y4t" customClass="SafeAreaView" customModule="Samples" customModuleProvider="target">
-                                <rect key="frame" x="0.0" y="667" width="375" height="0.0"/>
+                                <rect key="frame" x="0.0" y="744" width="375" height="34"/>
                                <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                            </view>
                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="sbF-Az-7sy">
-                                <rect key="frame" x="20" y="20" width="39" height="30"/>
+                                <rect key="frame" x="20" y="44" width="39" height="30"/>
                                <state key="normal" title="Close"/>
                                <connections>
                                    <action selector="closeWithSender:" destination="bYI-y3-Rzb" eventType="touchUpInside" id="MSC-ch-YJK"/>
                                </connections>
                            </button>
                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" alignment="top" spacing="44" translatesAutoresizingMaskIntoConstraints="NO" id="9p4-06-y2T">
-                                <rect key="frame" x="139.5" y="108" width="96" height="252"/>
+                                <rect key="frame" x="139.66666666666666" y="132" width="96" height="252"/>
                                <subviews>
                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="i9x-x5-n1q">
                                        <rect key="frame" x="0.0" y="0.0" width="80" height="30"/>
@@ -225,35 +359,36 @@
                        </subviews>
                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                        <constraints>
-                            <constraint firstItem="sbF-Az-7sy" firstAttribute="top" secondItem="GBa-yx-8to" secondAttribute="top" id="3VR-hj-zeQ"/>
-                            <constraint firstItem="9p4-06-y2T" firstAttribute="top" secondItem="GBa-yx-8to" secondAttribute="top" constant="88" id="41n-Fn-hi3"/>
+                            <constraint firstItem="sbF-Az-7sy" firstAttribute="top" secondItem="kjr-TP-fcM" secondAttribute="top" id="3VR-hj-zeQ"/>
+                            <constraint firstItem="9p4-06-y2T" firstAttribute="top" secondItem="kjr-TP-fcM" secondAttribute="top" constant="88" id="41n-Fn-hi3"/>
                            <constraint firstAttribute="bottom" secondItem="vut-mK-Y4t" secondAttribute="bottom" id="6eq-Kt-heZ"/>
-                            <constraint firstItem="sbF-Az-7sy" firstAttribute="leading" secondItem="GBa-yx-8to" secondAttribute="leading" constant="20" id="T2G-1L-PRs"/>
-                            <constraint firstItem="vut-mK-Y4t" firstAttribute="leading" secondItem="qwo-GK-p1U" secondAttribute="leading" id="gVC-jv-VJX"/>
-                            <constraint firstItem="vut-mK-Y4t" firstAttribute="trailing" secondItem="GBa-yx-8to" secondAttribute="trailing" id="jkq-p2-lUm"/>
-                            <constraint firstItem="9p4-06-y2T" firstAttribute="centerX" secondItem="qwo-GK-p1U" secondAttribute="centerX" id="l8t-p3-ETf"/>
-                            <constraint firstItem="vut-mK-Y4t" firstAttribute="top" secondItem="GBa-yx-8to" secondAttribute="bottom" id="rMy-JT-t4B"/>
+                            <constraint firstItem="sbF-Az-7sy" firstAttribute="leading" secondItem="kjr-TP-fcM" secondAttribute="leading" constant="20" id="T2G-1L-PRs"/>
+                            <constraint firstItem="vut-mK-Y4t" firstAttribute="leading" secondItem="kjr-TP-fcM" secondAttribute="leading" id="gVC-jv-VJX"/>
+                            <constraint firstItem="vut-mK-Y4t" firstAttribute="trailing" secondItem="kjr-TP-fcM" secondAttribute="trailing" id="jkq-p2-lUm"/>
+                            <constraint firstItem="9p4-06-y2T" firstAttribute="centerX" secondItem="kjr-TP-fcM" secondAttribute="centerX" id="l8t-p3-ETf"/>
+                            <constraint firstItem="vut-mK-Y4t" firstAttribute="top" secondItem="kjr-TP-fcM" secondAttribute="bottom" id="rMy-JT-t4B"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="GBa-yx-8to"/>
+                        <viewLayoutGuide key="safeArea" id="kjr-TP-fcM"/>
                    </view>
+                    <size key="freeformSize" width="375" height="778"/>
                    <connections>
                        <outlet property="safeAreaView" destination="vut-mK-Y4t" id="r9P-XF-wLd"/>
                    </connections>
                </viewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="fbi-LZ-M4Y" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="561" y="806"/>
+            <point key="canvasLocation" x="1375" y="734"/>
        </scene>
        <!--Nested Scroll View Controller-->
        <scene sceneID="TfC-A3-4R0">
            <objects>
                <viewController storyboardIdentifier="NestedScrollViewController" id="LAe-jm-k6f" customClass="NestedScrollViewController" customModule="Samples" customModuleProvider="target" sceneMemberID="viewController">
                    <view key="view" contentMode="scaleToFill" id="414-Wy-0t1">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="778"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
                            <scrollView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="sBe-tN-uMi">
-                                <rect key="frame" x="0.0" y="32" width="375" height="635"/>
+                                <rect key="frame" x="0.0" y="32" width="375" height="746"/>
                                <subviews>
                                    <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="lFR-Sp-Sj1">
                                        <rect key="frame" x="0.0" y="0.0" width="375" height="968"/>
@@ -329,20 +464,21 @@
                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                        <gestureRecognizers/>
                        <constraints>
-                            <constraint firstItem="sBe-tN-uMi" firstAttribute="leading" secondItem="414-Wy-0t1" secondAttribute="leading" id="8Qd-my-knA"/>
+                            <constraint firstItem="sBe-tN-uMi" firstAttribute="leading" secondItem="ufS-Rf-F2F" secondAttribute="leading" id="8Qd-my-knA"/>
                            <constraint firstItem="sBe-tN-uMi" firstAttribute="top" secondItem="414-Wy-0t1" secondAttribute="top" constant="32" id="9Js-LU-lNr"/>
                            <constraint firstAttribute="bottom" secondItem="sBe-tN-uMi" secondAttribute="bottom" id="jzB-47-P7e"/>
-                            <constraint firstAttribute="trailing" secondItem="sBe-tN-uMi" secondAttribute="trailing" id="nHG-wg-pLP"/>
+                            <constraint firstItem="ufS-Rf-F2F" firstAttribute="trailing" secondItem="sBe-tN-uMi" secondAttribute="trailing" id="nHG-wg-pLP"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="sL5-d5-za2"/>
+                        <viewLayoutGuide key="safeArea" id="ufS-Rf-F2F"/>
                        <connections>
                            <outletCollection property="gestureRecognizers" destination="tOa-bf-zGz" appends="YES" id="zle-Sz-M3U"/>
                            <outletCollection property="gestureRecognizers" destination="SCk-hG-weZ" appends="YES" id="OcK-FK-Lac"/>
                            <outletCollection property="gestureRecognizers" destination="Fvp-Z6-eVc" appends="YES" id="Fds-J5-YCg"/>
                        </connections>
                    </view>
-                    <size key="freeformSize" width="375" height="667"/>
+                    <size key="freeformSize" width="375" height="778"/>
                    <connections>
+                        <outlet property="nestedScrollView" destination="xba-kG-VQ2" id="ddV-kf-37A"/>
                        <outlet property="scrollView" destination="sBe-tN-uMi" id="h4S-Zl-cLO"/>
                    </connections>
                </viewController>
@@ -363,7 +499,7 @@
                    </connections>
                </swipeGestureRecognizer>
            </objects>
-            <point key="canvasLocation" x="1311" y="806"/>
+            <point key="canvasLocation" x="2097" y="734"/>
        </scene>
        <!--Detail View Controller-->
        <scene sceneID="b6k-zi-3wn">
@@ -373,8 +509,19 @@
                        <rect key="frame" x="0.0" y="0.0" width="375" height="778"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
+                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="8yw-OC-Ubk">
+                                <rect key="frame" x="0.0" y="690" width="375" height="88"/>
+                                <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="88" id="jwV-YU-tXG"/>
+                                </constraints>
+                            </view>
+                            <view alpha="0.5" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Kva-Z7-0qY" customClass="OnSafeAreaView" customModule="Samples" customModuleProvider="target">
+                                <rect key="frame" x="0.0" y="44" width="375" height="700"/>
+                                <color key="backgroundColor" red="0.0078431372550000003" green="0.72156862749999995" blue="0.45882352939999999" alpha="1" colorSpace="calibratedRGB"/>
+                            </view>
                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="noi-1a-5bZ" customClass="CloseButton" customModule="Samples" customModuleProvider="target">
-                                <rect key="frame" x="319" y="12" width="44" height="44"/>
+                                <rect key="frame" x="319" y="44" width="44" height="44"/>
                                <constraints>
                                    <constraint firstAttribute="height" constant="44" id="0jg-5D-A1F"/>
                                    <constraint firstAttribute="width" constant="44" id="1Cq-PA-wgW"/>
@@ -383,22 +530,8 @@
                                    <action selector="closeWithSender:" destination="YC8-ae-15L" eventType="touchUpInside" id="Z2v-19-S5k"/>
                                </connections>
                            </button>
-                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="8yw-OC-Ubk">
-                                <rect key="frame" x="0.0" y="690" width="375" height="88"/>
-                                <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <constraints>
-                                    <constraint firstAttribute="height" constant="88" id="jwV-YU-tXG"/>
-                                </constraints>
-                            </view>
-                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Kva-Z7-0qY" customClass="OnSafeAreaView" customModule="Samples" customModuleProvider="target">
-                                <rect key="frame" x="0.0" y="734" width="375" height="44"/>
-                                <color key="backgroundColor" red="0.0078431372550000003" green="0.72156862749999995" blue="0.45882352939999999" alpha="1" colorSpace="calibratedRGB"/>
-                                <constraints>
-                                    <constraint firstAttribute="height" constant="44" id="DQJ-cY-cKx"/>
-                                </constraints>
-                            </view>
                            <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" spacing="22" translatesAutoresizingMaskIntoConstraints="NO" id="tP3-oJ-4EB">
-                                <rect key="frame" x="130.5" y="108" width="114" height="82"/>
+                                <rect key="frame" x="130.66666666666666" y="132" width="114" height="134"/>
                                <subviews>
                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="c5r-jU-haj">
                                        <rect key="frame" x="0.0" y="0.0" width="114" height="30"/>
@@ -415,24 +548,33 @@
                                            <segue destination="bYI-y3-Rzb" kind="presentation" identifier="PresentModallySegue" id="3yq-HE-Tgn"/>
                                        </connections>
                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="01L-lp-oy6">
+                                        <rect key="frame" x="0.0" y="104" width="114" height="30"/>
+                                        <state key="normal" title="Update Layout"/>
+                                        <connections>
+                                            <action selector="buttonPressed:" destination="YC8-ae-15L" eventType="touchUpInside" id="zTb-sq-B6f"/>
+                                        </connections>
+                                    </button>
                                </subviews>
                            </stackView>
                        </subviews>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <color key="backgroundColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                        <gestureRecognizers/>
                        <constraints>
-                            <constraint firstItem="noi-1a-5bZ" firstAttribute="top" secondItem="g7l-kO-y7q" secondAttribute="top" constant="12" id="EQy-cr-F2Y"/>
-                            <constraint firstItem="tP3-oJ-4EB" firstAttribute="centerX" secondItem="g7l-kO-y7q" secondAttribute="centerX" id="EsD-Vf-dNZ"/>
+                            <constraint firstItem="noi-1a-5bZ" firstAttribute="top" secondItem="aOK-7l-cA6" secondAttribute="top" id="EQy-cr-F2Y"/>
+                            <constraint firstItem="tP3-oJ-4EB" firstAttribute="centerX" secondItem="aOK-7l-cA6" secondAttribute="centerX" id="EsD-Vf-dNZ"/>
+                            <constraint firstItem="Kva-Z7-0qY" firstAttribute="top" secondItem="aOK-7l-cA6" secondAttribute="top" id="Fff-HL-4mo"/>
                            <constraint firstItem="8yw-OC-Ubk" firstAttribute="bottom" secondItem="g7l-kO-y7q" secondAttribute="bottom" id="JOL-wC-w74"/>
-                            <constraint firstItem="8yw-OC-Ubk" firstAttribute="leading" secondItem="tAi-nk-rDB" secondAttribute="leading" id="RiJ-Hb-OOZ"/>
-                            <constraint firstItem="8yw-OC-Ubk" firstAttribute="trailing" secondItem="tAi-nk-rDB" secondAttribute="trailing" id="Sof-yL-mwK"/>
-                            <constraint firstItem="tP3-oJ-4EB" firstAttribute="top" secondItem="tAi-nk-rDB" secondAttribute="top" constant="88" id="Zhb-Ss-epe"/>
-                            <constraint firstItem="Kva-Z7-0qY" firstAttribute="trailing" secondItem="tAi-nk-rDB" secondAttribute="trailing" id="kkp-Yo-FQW"/>
-                            <constraint firstItem="tAi-nk-rDB" firstAttribute="trailing" secondItem="noi-1a-5bZ" secondAttribute="trailing" constant="12" id="lv9-Nf-HNB"/>
-                            <constraint firstItem="Kva-Z7-0qY" firstAttribute="leading" secondItem="tAi-nk-rDB" secondAttribute="leading" id="oVC-i1-TwS"/>
-                            <constraint firstItem="tAi-nk-rDB" firstAttribute="bottom" secondItem="Kva-Z7-0qY" secondAttribute="bottom" id="rW2-mF-5DR"/>
+                            <constraint firstItem="8yw-OC-Ubk" firstAttribute="leading" secondItem="aOK-7l-cA6" secondAttribute="leading" id="RiJ-Hb-OOZ"/>
+                            <constraint firstItem="8yw-OC-Ubk" firstAttribute="trailing" secondItem="aOK-7l-cA6" secondAttribute="trailing" id="Sof-yL-mwK"/>
+                            <constraint firstItem="tP3-oJ-4EB" firstAttribute="top" secondItem="aOK-7l-cA6" secondAttribute="top" constant="88" id="Zhb-Ss-epe"/>
+                            <constraint firstItem="Kva-Z7-0qY" firstAttribute="trailing" secondItem="aOK-7l-cA6" secondAttribute="trailing" id="kkp-Yo-FQW"/>
+                            <constraint firstItem="aOK-7l-cA6" firstAttribute="trailing" secondItem="noi-1a-5bZ" secondAttribute="trailing" constant="12" id="lv9-Nf-HNB"/>
+                            <constraint firstItem="Kva-Z7-0qY" firstAttribute="leading" secondItem="aOK-7l-cA6" secondAttribute="leading" id="oVC-i1-TwS"/>
+                            <constraint firstItem="aOK-7l-cA6" firstAttribute="bottom" secondItem="Kva-Z7-0qY" secondAttribute="bottom" id="rW2-mF-5DR"/>
+                            <constraint firstItem="8yw-OC-Ubk" firstAttribute="top" relation="greaterThanOrEqual" secondItem="tP3-oJ-4EB" secondAttribute="bottom" constant="88" id="vKQ-h9-uKt"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="tAi-nk-rDB"/>
+                        <viewLayoutGuide key="safeArea" id="aOK-7l-cA6"/>
                        <connections>
                            <outletCollection property="gestureRecognizers" destination="6Ca-p8-7uF" appends="YES" id="xOy-f1-NZE"/>
                            <outletCollection property="gestureRecognizers" destination="SPY-Vr-XDT" appends="YES" id="vgS-Am-jhQ"/>
@@ -462,7 +604,7 @@
                    </connections>
                </pongPressGestureRecognizer>
            </objects>
-            <point key="canvasLocation" x="1440.8" y="-23.388305847076463"/>
+            <point key="canvasLocation" x="655" y="734"/>
        </scene>
        <!--Debug Text View Controller-->
        <scene sceneID="Bkq-O7-q4A">
@@ -520,24 +662,26 @@ Section 1.10.33 of "de Finibus Bonorum et Malorum", written by Cicero in 45 BC
                        </subviews>
                        <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                        <constraints>
-                            <constraint firstItem="rN1-HL-YHv" firstAttribute="leading" secondItem="ix0-2W-gQN" secondAttribute="leading" id="7V3-KL-vXd"/>
+                            <constraint firstItem="rN1-HL-YHv" firstAttribute="leading" secondItem="5ET-zC-lCb" secondAttribute="leading" id="7V3-KL-vXd"/>
                            <constraint firstAttribute="bottom" secondItem="rN1-HL-YHv" secondAttribute="bottom" id="efD-U5-Tet"/>
                            <constraint firstItem="rN1-HL-YHv" firstAttribute="top" secondItem="9YG-0j-Zzg" secondAttribute="top" constant="17" id="fiO-LL-nSC"/>
-                            <constraint firstItem="rN1-HL-YHv" firstAttribute="trailing" secondItem="ix0-2W-gQN" secondAttribute="trailing" id="lfg-EE-euw"/>
+                            <constraint firstItem="rN1-HL-YHv" firstAttribute="trailing" secondItem="5ET-zC-lCb" secondAttribute="trailing" id="lfg-EE-euw"/>
                        </constraints>
-                        <viewLayoutGuide key="safeArea" id="ix0-2W-gQN"/>
+                        <viewLayoutGuide key="safeArea" id="5ET-zC-lCb"/>
                    </view>
                    <size key="freeformSize" width="375" height="778"/>
                    <connections>
                        <outlet property="textView" destination="rN1-HL-YHv" id="gmr-Uf-jd8"/>
+                        <outlet property="textViewTopConstraint" destination="fiO-LL-nSC" id="Rum-TN-c2e"/>
+                        <outlet property="view" destination="9YG-0j-Zzg" id="jhb-eT-nEn"/>
                    </connections>
                </viewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="x1h-y1-h8q" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="729" y="-23"/>
+            <point key="canvasLocation" x="-1" y="734"/>
        </scene>
    </scenes>
    <inferredMetricsTieBreakers>
-        <segue reference="3yq-HE-Tgn"/>
+        <segue reference="r1P-2i-NDe"/>
    </inferredMetricsTieBreakers>
 </document>
@@ -5,21 +5,39 @@

 import UIKit

-extension UIView {
-    var layoutInsets: UIEdgeInsets {
-        if #available(iOS 11.0, *) {
-            return safeAreaInsets
-        } else {
-            return layoutMargins
-        }
-    }
+protocol LayoutGuideProvider {
+    var topAnchor: NSLayoutYAxisAnchor { get }
+    var bottomAnchor: NSLayoutYAxisAnchor { get }
+}
+extension UILayoutGuide: LayoutGuideProvider {}

-    var layoutGuide: UILayoutGuide {
-        if #available(iOS 11.0, *) {
-            return safeAreaLayoutGuide
-        } else {
-            return layoutMarginsGuide
-        }
+class CustomLayoutGuide: LayoutGuideProvider {
+    let topAnchor: NSLayoutYAxisAnchor
+    let bottomAnchor: NSLayoutYAxisAnchor
+    init(topAnchor: NSLayoutYAxisAnchor, bottomAnchor: NSLayoutYAxisAnchor) {
+        self.topAnchor = topAnchor
+        self.bottomAnchor = bottomAnchor
    }
 }

+extension UIViewController {
+    var layoutInsets: UIEdgeInsets {
+        if #available(iOS 11.0, *) {
+            return view.safeAreaInsets
+        } else {
+            return UIEdgeInsets(top: topLayoutGuide.length,
+                                left: 0.0,
+                                bottom: bottomLayoutGuide.length,
+                                right: 0.0)
+        }
+    }
+
+    var layoutGuide: LayoutGuideProvider {
+        if #available(iOS 11.0, *) {
+            return view!.safeAreaLayoutGuide
+        } else {
+            return CustomLayoutGuide(topAnchor: topLayoutGuide.bottomAnchor,
+                                     bottomAnchor: bottomLayoutGuide.topAnchor)
+        }
+    }
+}
@@ -17,9 +17,11 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
        case trackingTextView
        case showDetail
        case showModal
+        case showFloatingPanelModal
        case showTabBar
        case showNestedScrollView
        case showRemovablePanel
+        case showIntrinsicView

        var name: String {
            switch self {
@@ -27,9 +29,11 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
            case .trackingTextView: return "Scroll tracking(TextView)"
            case .showDetail: return "Show Detail Panel"
            case .showModal: return "Show Modal"
+            case .showFloatingPanelModal: return "Show Floating Panel Modal"
            case .showTabBar: return "Show Tab Bar"
            case .showNestedScrollView: return "Show Nested ScrollView"
            case .showRemovablePanel: return "Show Removable Panel"
+            case .showIntrinsicView: return "Show Intrinsic View"
            }
        }

@@ -39,16 +43,23 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
            case .trackingTextView: return "ConsoleViewController"
            case .showDetail: return "DetailViewController"
            case .showModal: return "ModalViewController"
+            case .showFloatingPanelModal: return nil
            case .showTabBar: return "TabBarViewController"
            case .showNestedScrollView: return "NestedScrollViewController"
            case .showRemovablePanel: return "DetailViewController"
+            case .showIntrinsicView: return "IntrinsicViewController"
            }
        }
    }

+    var currentMenu: Menu = .trackingTableView
+
    var mainPanelVC: FloatingPanelController!
    var detailPanelVC: FloatingPanelController!
-    var currentMenu: Menu = .trackingTableView
+    var settingsPanelVC: FloatingPanelController!
+
+    var mainPanelObserves: [NSKeyValueObservation] = []
+    var settingsObserves: [NSKeyValueObservation] = []

    override func viewDidLoad() {
        super.viewDidLoad()
@@ -56,19 +67,42 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
        tableView.delegate = self
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")

+        let searchController = UISearchController(searchResultsController: nil)
+        if #available(iOS 11.0, *) {
+            navigationItem.searchController = searchController
+            navigationItem.hidesSearchBarWhenScrolling = false
+            navigationItem.largeTitleDisplayMode = .automatic
+        } else {
+            // Fallback on earlier versions
+        }
+
        let contentVC = DebugTableViewController()
        addMainPanel(with: contentVC)
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
+
+        if #available(iOS 11.0, *) {
+            if let observation = navigationController?.navigationBar.observe(\.prefersLargeTitles, changeHandler: { (bar, _) in
+                self.tableView.reloadData()
+            }) {
+                settingsObserves.append(observation)
+            }
+        }
+    }
+
+    override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        settingsObserves.removeAll()
    }

    func addMainPanel(with contentVC: UIViewController) {
+        mainPanelObserves.removeAll()
+
        // Initialize FloatingPanelController
        mainPanelVC = FloatingPanelController()
        mainPanelVC.delegate = self
-        mainPanelVC.isRemovalInteractionEnabled = (currentMenu == .showRemovablePanel)

        // Initialize FloatingPanelController and add the view
        mainPanelVC.surfaceView.cornerRadius = 6.0
@@ -77,18 +111,34 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
        // Set a content view controller
        mainPanelVC.set(contentViewController: contentVC)

+        // Enable tap-to-hide and removal interaction
+        switch currentMenu {
+        case .showRemovablePanel, .showIntrinsicView:
+            mainPanelVC.isRemovalInteractionEnabled = true
+
+            let backdropTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleBackdrop(tapGesture:)))
+            mainPanelVC.backdropView.addGestureRecognizer(backdropTapGesture)
+        default:
+            break
+        }
+
        // Track a scroll view
        switch contentVC {
        case let consoleVC as DebugTextViewController:
            mainPanelVC.track(scrollView: consoleVC.textView)

        case let contentVC as DebugTableViewController:
+            let ob = contentVC.tableView.observe(\.isEditing) { (tableView, _) in
+                self.mainPanelVC.panGestureRecognizer.isEnabled = !tableView.isEditing
+            }
+            mainPanelObserves.append(ob)
            mainPanelVC.track(scrollView: contentVC.tableView)
        case let contentVC as NestedScrollViewController:
            mainPanelVC.track(scrollView: contentVC.scrollView)
        default:
            break
        }
+
        //  Add FloatingPanel to self.view
        mainPanelVC.addPanel(toParent: self, belowView: nil, animated: true)
    }
@@ -97,22 +147,72 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
        detailPanelVC.removePanelFromParent(animated: true, completion: nil)
    }

+    @objc func handleBackdrop(tapGesture: UITapGestureRecognizer) {
+        switch tapGesture.view {
+        case mainPanelVC.backdropView:
+            mainPanelVC.hide(animated: true, completion: nil)
+        case settingsPanelVC.backdropView:
+            settingsPanelVC.removePanelFromParent(animated: true)
+            settingsPanelVC = nil
+        default:
+            break
+        }
+    }
+
    // MARK:- TableViewDatasource

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-        return Menu.allCases.count
+        if #available(iOS 11.0, *) {
+            if navigationController?.navigationBar.prefersLargeTitles == true {
+                return Menu.allCases.count + 30
+            } else {
+                return Menu.allCases.count
+            }
+        } else {
+            return Menu.allCases.count
+        }
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
-        let menu = Menu.allCases[indexPath.row]
-        cell.textLabel?.text = menu.name
+        if Menu.allCases.count > indexPath.row {
+            let menu = Menu.allCases[indexPath.row]
+            cell.textLabel?.text = menu.name
+        } else {
+            cell.textLabel?.text = "\(indexPath.row) row"
+        }
        return cell
    }

+    // MARK:- Actions
+    @IBAction func showDebugMenu(_ sender: UIBarButtonItem) {
+        guard settingsPanelVC == nil else { return }
+        // Initialize FloatingPanelController
+        settingsPanelVC = FloatingPanelController()
+
+        // Initialize FloatingPanelController and add the view
+        settingsPanelVC.surfaceView.cornerRadius = 6.0
+        settingsPanelVC.surfaceView.shadowHidden = false
+        settingsPanelVC.isRemovalInteractionEnabled = true
+
+        let backdropTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleBackdrop(tapGesture:)))
+        settingsPanelVC.backdropView.addGestureRecognizer(backdropTapGesture)
+
+        settingsPanelVC.delegate = self
+
+        let contentVC = storyboard?.instantiateViewController(withIdentifier: "SettingsViewController")
+
+        // Set a content view controller
+        settingsPanelVC.set(contentViewController: contentVC)
+
+        //  Add FloatingPanel to self.view
+        settingsPanelVC.addPanel(toParent: self, belowView: nil, animated: true)
+    }
+
    // MARK:- TableViewDelegate

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        guard Menu.allCases.count > indexPath.row else { return }
        let menu = Menu.allCases[indexPath.row]
        let contentVC: UIViewController = {
            guard let storyboardID = menu.storyboardID else { return DebugTableViewController() }
@@ -124,7 +224,7 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable

        switch menu {
        case .showDetail:
-            detailPanelVC?.removeFromParent()
+            detailPanelVC?.removePanelFromParent(animated: false)

            // Initialize FloatingPanelController
            detailPanelVC = FloatingPanelController()
@@ -141,6 +241,18 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
        case .showModal, .showTabBar:
            let modalVC = contentVC
            present(modalVC, animated: true, completion: nil)
+        case .showFloatingPanelModal:
+            let fpc = FloatingPanelController()
+            let contentVC = self.storyboard!.instantiateViewController(withIdentifier: "DetailViewController")
+            fpc.set(contentViewController: contentVC)
+            fpc.delegate = self
+
+            fpc.surfaceView.cornerRadius = 38.5
+            fpc.surfaceView.shadowHidden = false
+
+            fpc.isRemovalInteractionEnabled = true
+
+            self.present(fpc, animated: true, completion: nil)
        default:
            detailPanelVC?.removePanelFromParent(animated: true, completion: nil)
            mainPanelVC?.removePanelFromParent(animated: true) {
@@ -150,10 +262,40 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
    }

    func floatingPanel(_ vc: FloatingPanelController, layoutFor newCollection: UITraitCollection) -> FloatingPanelLayout? {
-        if currentMenu == .showRemovablePanel {
+        if vc == settingsPanelVC {
+            return IntrinsicPanelLayout()
+        }
+
+        switch currentMenu {
+        case .showRemovablePanel:
            return newCollection.verticalSizeClass == .compact ? RemovablePanelLandscapeLayout() :  RemovablePanelLayout()
-        } else {
-            return self
+        case .showIntrinsicView:
+            return IntrinsicPanelLayout()
+        case .showFloatingPanelModal:
+            if vc != mainPanelVC && vc != detailPanelVC {
+                return ModalPanelLayout()
+            }
+            fallthrough
+        default:
+            return (newCollection.verticalSizeClass == .compact) ? nil  : self
+        }
+    }
+
+    func floatingPanel(_ vc: FloatingPanelController, shouldRecognizeSimultaneouslyWith gestureRecognizer: UIGestureRecognizer) -> Bool {
+        switch currentMenu {
+        case .showNestedScrollView:
+            return (vc.contentViewController as? NestedScrollViewController)?.nestedScrollView.gestureRecognizers?.contains(gestureRecognizer) ?? false
+        default:
+            return false
+        }
+    }
+
+    func floatingPanelDidEndRemove(_ vc: FloatingPanelController) {
+        switch vc {
+        case settingsPanelVC:
+            settingsPanelVC = nil
+        default:
+            break
        }
    }

@@ -166,16 +308,22 @@ class SampleListViewController: UIViewController, UITableViewDataSource, UITable
        case .full: return UIScreen.main.bounds.height == 667.0 ? 18.0 : 16.0
        case .half: return 262.0
        case .tip: return 69.0
+        case .hidden: return nil
        }
    }
 }

-class RemovablePanelLayout: FloatingPanelLayout {
+class IntrinsicPanelLayout: FloatingPanelIntrinsicLayout { }
+
+class RemovablePanelLayout: FloatingPanelIntrinsicLayout {
+    var supportedPositions: Set<FloatingPanelPosition> {
+        return [.full, .half]
+    }
    var initialPosition: FloatingPanelPosition {
        return .half
    }
-    var supportedPositions: Set<FloatingPanelPosition> {
-        return [.full, .half]
+    var topInteractionBuffer: CGFloat {
+        return 200.0
    }
    var bottomInteractionBuffer: CGFloat {
        return 261.0 - 22.0
@@ -183,7 +331,24 @@ class RemovablePanelLayout: FloatingPanelLayout {

    func insetFor(position: FloatingPanelPosition) -> CGFloat? {
        switch position {
-        case .full: return 16.0
+        case .half: return 130.0
+        default: return nil
+        }
+    }
+    func backdropAlphaFor(position: FloatingPanelPosition) -> CGFloat {
+        return 0.3
+    }
+}
+
+class RemovablePanelLandscapeLayout: FloatingPanelIntrinsicLayout {
+    var supportedPositions: Set<FloatingPanelPosition> {
+        return [.full, .half]
+    }
+    var bottomInteractionBuffer: CGFloat {
+        return 261.0 - 22.0
+    }
+    func insetFor(position: FloatingPanelPosition) -> CGFloat? {
+        switch position {
        case .half: return 261.0
        default: return nil
        }
@@ -193,22 +358,9 @@ class RemovablePanelLayout: FloatingPanelLayout {
    }
 }

-class RemovablePanelLandscapeLayout: FloatingPanelLayout {
-    var initialPosition: FloatingPanelPosition {
-        return .half
-    }
-    var supportedPositions: Set<FloatingPanelPosition> {
-        return [.half]
-    }
-    var bottomInteractionBuffer: CGFloat {
-        return 261.0 - 22.0
-    }
-
-    func insetFor(position: FloatingPanelPosition) -> CGFloat? {
-        switch position {
-        case .half: return 261.0
-        default: return nil
-        }
+class ModalPanelLayout: FloatingPanelIntrinsicLayout {
+    var topInteractionBuffer: CGFloat {
+        return 100.0
    }
    func backdropAlphaFor(position: FloatingPanelPosition) -> CGFloat {
        return 0.3
@@ -217,6 +369,7 @@ class RemovablePanelLandscapeLayout: FloatingPanelLayout {

 class NestedScrollViewController: UIViewController {
    @IBOutlet weak var scrollView: UIScrollView!
+    @IBOutlet weak var nestedScrollView: UIScrollView!

    @IBAction func longPressed(_ sender: Any) {
        print("LongPressed!")
@@ -231,16 +384,32 @@ class NestedScrollViewController: UIViewController {

 class DebugTextViewController: UIViewController, UITextViewDelegate {
    @IBOutlet weak var textView: UITextView!
+    @IBOutlet weak var textViewTopConstraint: NSLayoutConstraint!

    override func viewDidLoad() {
        super.viewDidLoad()
        textView.delegate = self
+        print("viewDidLoad: TextView --- ", textView.contentOffset, textView.contentInset)

        if #available(iOS 11.0, *) {
            textView.contentInsetAdjustmentBehavior = .never
        }
    }

+    override func viewWillLayoutSubviews() {
+        print("viewWillLayoutSubviews: TextView --- ", textView.contentOffset, textView.contentInset, textView.frame)
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        print("viewDidLayoutSubviews: TextView --- ", textView.contentOffset, textView.contentInset, textView.frame)
+    }
+
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        print("TextView --- ", textView.contentOffset, textView.contentInset, textView.frame)
+    }
+
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        print("TextView --- ", scrollView.contentOffset, scrollView.contentInset)
        if #available(iOS 11.0, *) {
@@ -249,16 +418,68 @@ class DebugTextViewController: UIViewController, UITextViewDelegate {
    }

    @IBAction func close(sender: UIButton) {
-        // Now impossible
-        // dismiss(animated: true, completion: nil)
-        (self.parent as? FloatingPanelController)?.removePanelFromParent(animated: true, completion: nil)
+        // (self.parent as? FloatingPanelController)?.removePanelFromParent(animated: true, completion: nil)
+        dismiss(animated: true, completion: nil)
    }
 }

-class DebugTableViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
+class InspectableViewController: UIViewController {
+    override func viewWillLayoutSubviews() {
+        super.viewWillLayoutSubviews()
+        print(">>> Content View: viewWillLayoutSubviews", layoutInsets)
+    }
+
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        print(">>> Content View: viewDidLayoutSubviews", layoutInsets)
+    }
+
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        print(">>> Content View: viewWillAppear", layoutInsets)
+    }
+
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        print(">>> Content View: viewDidAppear", view.bounds, layoutInsets)
+    }
+
+    override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        print(">>> Content View: viewWillDisappear")
+    }
+
+    override func viewDidDisappear(_ animated: Bool) {
+        super.viewDidDisappear(animated)
+        print(">>> Content View: viewDidDisappear")
+    }
+
+    override func willMove(toParent parent: UIViewController?) {
+        super.willMove(toParent: parent)
+        print(">>> Content View: willMove(toParent: \(String(describing: parent))")
+    }
+
+    override func didMove(toParent parent: UIViewController?) {
+        super.didMove(toParent: parent)
+        print(">>> Content View: didMove(toParent: \(String(describing: parent))")
+    }
+    public override func willTransition(to newCollection: UITraitCollection, with coordinator: UIViewControllerTransitionCoordinator) {
+        print(">>> Content View: willTransition(to: \(newCollection), with: \(coordinator))", layoutInsets)
+    }
+}
+
+class DebugTableViewController: InspectableViewController, UITableViewDataSource, UITableViewDelegate {
    weak var tableView: UITableView!
    var items: [String] = []
    var itemHeight: CGFloat = 66.0
+
+    enum Menu: String, CaseIterable {
+        case animateScroll = "Animate Scroll"
+        case changeContentSize = "Change content size"
+        case reorder = "Reorder"
+    }
+
+    var reorderButton: UIButton!
    override func viewDidLoad() {
        super.viewDidLoad()

@@ -288,17 +509,21 @@ class DebugTableViewController: UIViewController, UITableViewDataSource, UITable
            stackView.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -22.0),
            ])

-        let button = UIButton()
-        button.setTitle("Animate Scroll", for: .normal)
-        button.setTitleColor(view.tintColor, for: .normal)
-        button.addTarget(self, action: #selector(animateScroll), for: .touchUpInside)
-        stackView.addArrangedSubview(button)
-
-        let button2 = UIButton()
-        button2.setTitle("Change content size", for: .normal)
-        button2.setTitleColor(view.tintColor, for: .normal)
-        button2.addTarget(self, action: #selector(changeContentSize), for: .touchUpInside)
-        stackView.addArrangedSubview(button2)
+        for menu in Menu.allCases {
+            let button = UIButton()
+            button.setTitle(menu.rawValue, for: .normal)
+            button.setTitleColor(view.tintColor, for: .normal)
+            switch menu {
+            case .animateScroll:
+                button.addTarget(self, action: #selector(animateScroll), for: .touchUpInside)
+            case .changeContentSize:
+                button.addTarget(self, action: #selector(changeContentSize), for: .touchUpInside)
+            case .reorder:
+                button.addTarget(self, action: #selector(reorderItems), for: .touchUpInside)
+                reorderButton = button
+            }
+            stackView.addArrangedSubview(button)
+        }

        for i in 0...100 {
            items.append("Items \(i)")
@@ -339,6 +564,16 @@ class DebugTableViewController: UIViewController, UITableViewDataSource, UITable
        self.present(actionSheet, animated: true, completion: nil)
    }

+    @objc func reorderItems() {
+        if reorderButton.titleLabel?.text == Menu.reorder.rawValue {
+            tableView.isEditing = true
+            reorderButton.setTitle("Cancel", for: .normal)
+        } else {
+            tableView.isEditing = false
+            reorderButton.setTitle(Menu.reorder.rawValue, for: .normal)
+        }
+    }
+
    func changeItems(_ count: Int) {
        items.removeAll()
        for i in 0..<count {
@@ -352,50 +587,6 @@ class DebugTableViewController: UIViewController, UITableViewDataSource, UITable
        (self.parent as! FloatingPanelController).removePanelFromParent(animated: true, completion: nil)
    }

-    override func viewWillLayoutSubviews() {
-        super.viewWillLayoutSubviews()
-        //print("Content View: viewWillLayoutSubviews")
-    }
-
-    override func viewDidLayoutSubviews() {
-        super.viewDidLayoutSubviews()
-        //print("Content View: viewDidLayoutSubviews")
-    }
-
-    override func viewWillAppear(_ animated: Bool) {
-        super.viewWillAppear(animated)
-        print("Content View: viewWillAppear")
-    }
-
-    override func viewDidAppear(_ animated: Bool) {
-        super.viewDidAppear(animated)
-        print("Content View: viewDidAppear", view.bounds)
-    }
-
-    override func viewWillDisappear(_ animated: Bool) {
-        super.viewWillDisappear(animated)
-        print("Content View: viewWillDisappear")
-    }
-
-    override func viewDidDisappear(_ animated: Bool) {
-        super.viewDidDisappear(animated)
-        print("Content View: viewDidDisappear")
-    }
-
-    override func willMove(toParent parent: UIViewController?) {
-        super.willMove(toParent: parent)
-        print("Content View: willMove(toParent: \(String(describing: parent))")
-    }
-
-    override func didMove(toParent parent: UIViewController?) {
-        super.didMove(toParent: parent)
-        print("Content View: didMove(toParent: \(String(describing: parent))")
-    }
-
-    public override func willTransition(to newCollection: UITraitCollection, with coordinator: UIViewControllerTransitionCoordinator) {
-        print("Content View: willTransition(to: \(newCollection), with: \(coordinator))")
-    }
-
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }
@@ -418,14 +609,21 @@ class DebugTableViewController: UIViewController, UITableViewDataSource, UITable
            }),
        ]
    }
+
+    func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
+        return true
+    }
+
+    func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
+        items.insert(items.remove(at: sourceIndexPath.row), at: destinationIndexPath.row)
+    }
 }

-class DetailViewController: UIViewController {
+class DetailViewController: InspectableViewController {
    @IBOutlet weak var closeButton: UIButton!
    @IBAction func close(sender: UIButton) {
-        // Now impossible
-        // dismiss(animated: true, completion: nil)
-        (self.parent as? FloatingPanelController)?.removePanelFromParent(animated: true, completion: nil)
+        // (self.parent as? FloatingPanelController)?.removePanelFromParent(animated: true, completion: nil)
+        dismiss(animated: true, completion: nil)
    }

    @IBAction func buttonPressed(_ sender: UIButton) {
@@ -521,6 +719,7 @@ class ModalSecondLayout: FloatingPanelLayout {
        case .full: return 18.0
        case .half: return 262.0
        case .tip: return 44.0
+        case .hidden: return nil
        }
    }
 }
@@ -562,12 +761,60 @@ class TabBarContentViewController: UIViewController, FloatingPanelControllerDele
        case 0:
            return OneTabBarPanelLayout()
        case 1:
-            return TwoTabBarPanel2Layout()
+            return TwoTabBarPanelLayout()
+        case 2:
+            return ThreeTabBarPanelLayout()
        default:
            return nil
        }
    }

+    func floatingPanelDidMove(_ vc: FloatingPanelController) {
+        guard self.tabBarItem.tag == 2 else { return }
+
+        /* Solution 1: Manipulate scoll content inset */
+        /*
+        guard let scrollView = consoleVC.textView else { return }
+        var insets = vc.adjustedContentInsets
+        if vc.surfaceView.frame.minY < vc.layoutInsets.top {
+            insets.top = vc.layoutInsets.top - vc.surfaceView.frame.minY
+        } else {
+            insets.top = 0.0
+        }
+        scrollView.contentInset = insets
+         */
+
+        // Solution 2: Manipulate top constraint
+        assert(consoleVC.textViewTopConstraint != nil)
+        if vc.surfaceView.frame.minY + 17.0 < vc.layoutInsets.top {
+            consoleVC.textViewTopConstraint?.constant = vc.layoutInsets.top - vc.surfaceView.frame.minY
+        } else {
+            consoleVC.textViewTopConstraint?.constant = 17.0
+        }
+        consoleVC.view.layoutIfNeeded()
+    }
+
+    func floatingPanelDidChangePosition(_ vc: FloatingPanelController) {
+        guard self.tabBarItem.tag == 2 else { return }
+
+        /* Solution 1: Manipulate scoll content inset */
+        /*
+        guard let scrollView = consoleVC.textView else { return }
+        var insets = vc.adjustedContentInsets
+        insets.top = (vc.position == .full) ? vc.layoutInsets.top : 0.0
+        scrollView.contentInset = insets
+        if scrollView.contentOffset.y - scrollView.contentInset.top < 0.0  {
+            scrollView.contentOffset = CGPoint(x: 0.0,
+                                               y: 0.0 - scrollView.contentInset.top)
+        }
+         */
+
+        // Solution 2: Manipulate top constraint
+        assert(consoleVC.textViewTopConstraint != nil)
+        consoleVC.textViewTopConstraint?.constant = (vc.position == .full) ? vc.layoutInsets.top : 17.0
+        consoleVC.view.layoutIfNeeded()
+    }
+
    @IBAction func close(sender: UIButton) {
        dismiss(animated: true, completion: nil)
    }
@@ -606,7 +853,7 @@ class OneTabBarPanelLayout: FloatingPanelLayout {
    }
 }

-class TwoTabBarPanel2Layout: FloatingPanelLayout {
+class TwoTabBarPanelLayout: FloatingPanelLayout {
    var initialPosition: FloatingPanelPosition {
        return .half
    }
@@ -625,3 +872,53 @@ class TwoTabBarPanel2Layout: FloatingPanelLayout {
        }
    }
 }
+
+class ThreeTabBarPanelLayout: FloatingPanelFullScreenLayout {
+    var initialPosition: FloatingPanelPosition {
+        return .half
+    }
+    var supportedPositions: Set<FloatingPanelPosition> {
+        return [.full, .half]
+    }
+    func insetFor(position: FloatingPanelPosition) -> CGFloat? {
+        switch position {
+        case .full: return 0.0
+        case .half: return 261.0
+        default: return nil
+        }
+    }
+    func backdropAlphaFor(position: FloatingPanelPosition) -> CGFloat {
+        return 0.3
+    }
+}
+
+class SettingsViewController: InspectableViewController {
+    @IBOutlet weak var largeTitlesSwicth: UISwitch!
+    @IBOutlet weak var translucentSwicth: UISwitch!
+    @IBOutlet weak var versionLabel: UILabel!
+
+    override func viewDidLoad() {
+        versionLabel.text = "Version: \(Bundle.main.infoDictionary?["CFBundleVersion"] ?? "--")"
+    }
+    
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        if #available(iOS 11.0, *) {
+            let prefersLargeTitles = navigationController!.navigationBar.prefersLargeTitles
+            largeTitlesSwicth.setOn(prefersLargeTitles, animated: false)
+        } else {
+            largeTitlesSwicth.isEnabled = false
+        }
+        let isTranslucent = navigationController!.navigationBar.isTranslucent
+        translucentSwicth.setOn(isTranslucent, animated: false)
+    }
+
+    @IBAction func toggleLargeTitle(_ sender: UISwitch) {
+        if #available(iOS 11.0, *) {
+            navigationController?.navigationBar.prefersLargeTitles = sender.isOn
+        }
+    }
+    @IBAction func toggleTranslucent(_ sender: UISwitch) {
+        navigationController?.navigationBar.isTranslucent = sender.isOn
+    }
+}
@@ -114,6 +114,7 @@ class FloatingPanelStocksLayout: FloatingPanelLayout {
        case .full: return 56.0
        case .half: return 262.0
        case .tip: return 85.0 + 44.0 // Visible + ToolView
+        default: return nil
        }
    }

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|

  s.name                = "FloatingPanel"
-  s.version             = "1.2.2"
+  s.version             = "1.3.3"
  s.summary             = "FloatingPanel is a clean and easy-to-use UI component of a floating panel interface."
  s.description         = <<-DESC
 FloatingPanel is a clean and easy-to-use UI component for a new interface introduced in Apple Maps, Shortcuts and Stocks app.
@@ -13,7 +13,7 @@ The new interface displays the related contents and utilities in parallel as a u
  s.platform            = :ios, "10.0"
  s.source              = { :git => "https://github.com/SCENEE/FloatingPanel.git", :tag => "v#{s.version}" }
  s.source_files        = "Framework/Sources/*.swift"
-  s.swift_version       = "4.2"
+  s.swift_version       = "4.0"
  s.pod_target_xcconfig = { 'SWIFT_WHOLE_MODULE_OPTIMIZATION' => 'YES', 'APPLICATION_EXTENSION_API_ONLY' => 'YES' }

  s.framework           = "UIKit"
@@ -7,6 +7,8 @@
 	objects = {

 /* Begin PBXBuildFile section */
+		54352E9621A51A2500CBCA08 /* FloatingPanelTransitioning.swift in Sources */ = {isa = PBXBuildFile; fileRef = 54352E9521A51A2500CBCA08 /* FloatingPanelTransitioning.swift */; };
+		54352E9821A521CA00CBCA08 /* FloatingPanelView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 54352E9721A521CA00CBCA08 /* FloatingPanelView.swift */; };
 		5450EEE421646DF500135936 /* FloatingPanelBehavior.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5450EEE321646DF500135936 /* FloatingPanelBehavior.swift */; };
 		545DB9CB2151169500CA77B8 /* FloatingPanel.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 545DB9C12151169500CA77B8 /* FloatingPanel.framework */; };
 		545DB9D02151169500CA77B8 /* ViewTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 545DB9CF2151169500CA77B8 /* ViewTests.swift */; };
@@ -32,6 +34,8 @@
 /* End PBXContainerItemProxy section */

 /* Begin PBXFileReference section */
+		54352E9521A51A2500CBCA08 /* FloatingPanelTransitioning.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FloatingPanelTransitioning.swift; sourceTree = "<group>"; };
+		54352E9721A521CA00CBCA08 /* FloatingPanelView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FloatingPanelView.swift; sourceTree = "<group>"; };
 		5450EEE321646DF500135936 /* FloatingPanelBehavior.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FloatingPanelBehavior.swift; sourceTree = "<group>"; };
 		545DB9C12151169500CA77B8 /* FloatingPanel.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = FloatingPanel.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		545DB9C42151169500CA77B8 /* FloatingPanelController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FloatingPanelController.h; sourceTree = "<group>"; };
@@ -92,9 +96,11 @@
 				545DB9C52151169500CA77B8 /* Info.plist */,
 				545DB9C42151169500CA77B8 /* FloatingPanelController.h */,
 				545DB9DF21511AC100CA77B8 /* FloatingPanelController.swift */,
+				54352E9521A51A2500CBCA08 /* FloatingPanelTransitioning.swift */,
 				54CFBFC4215CD09C006B5735 /* FloatingPanel.swift */,
 				54CFBFC2215CD045006B5735 /* FloatingPanelLayout.swift */,
 				5450EEE321646DF500135936 /* FloatingPanelBehavior.swift */,
+				54352E9721A521CA00CBCA08 /* FloatingPanelView.swift */,
 				54CDC5D2215B6D5A007D205C /* FloatingPanelSurfaceView.swift */,
 				54CDC5D4215B6D8D007D205C /* FloatingPanelBackdropView.swift */,
 				545DBA2A2152383100CA77B8 /* GrabberHandleView.swift */,
@@ -225,11 +231,13 @@
 				54CDC5D3215B6D5A007D205C /* FloatingPanelSurfaceView.swift in Sources */,
 				54CFBFC3215CD045006B5735 /* FloatingPanelLayout.swift in Sources */,
 				54CDC5D5215B6D8D007D205C /* FloatingPanelBackdropView.swift in Sources */,
+				54352E9821A521CA00CBCA08 /* FloatingPanelView.swift in Sources */,
 				54CFBFC5215CD09C006B5735 /* FloatingPanel.swift in Sources */,
 				54ABD7AF216CCFF7002E6C13 /* Logger.swift in Sources */,
 				545DB9E021511AC100CA77B8 /* FloatingPanelController.swift in Sources */,
 				5450EEE421646DF500135936 /* FloatingPanelBehavior.swift in Sources */,
 				545DBA2B2152383100CA77B8 /* GrabberHandleView.swift in Sources */,
+				54352E9621A51A2500CBCA08 /* FloatingPanelTransitioning.swift in Sources */,
 				545DB9DE215118C800CA77B8 /* UIExtensions.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -398,7 +406,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -424,7 +432,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanel;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
@@ -8,9 +8,9 @@ import UIKit
 /// FloatingPanel presentation model
 ///
 class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate {
-    /* Cause 'terminating with uncaught exception of type NSException' error on Swift Playground
-     unowned let view: UIView
-     */
+    // MUST be a weak reference to prevent UI freeze on the presentaion modally
+    weak var viewcontroller: FloatingPanelController!
+
    let surfaceView: FloatingPanelSurfaceView
    let backdropView: FloatingPanelBackdropView
    var layoutAdapter: FloatingPanelLayoutAdapter
@@ -26,19 +26,12 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
    }
    weak var userScrollViewDelegate: UIScrollViewDelegate?

-    var safeAreaInsets: UIEdgeInsets! {
-        get { return layoutAdapter.safeAreaInsets }
-        set { layoutAdapter.safeAreaInsets = newValue }
-    }
-
-    unowned let viewcontroller: FloatingPanelController
-
-    private(set) var state: FloatingPanelPosition = .tip {
+    private(set) var state: FloatingPanelPosition = .hidden {
        didSet { viewcontroller.delegate?.floatingPanelDidChangePosition(viewcontroller) }
    }

    private var isBottomState: Bool {
-        let remains = layoutAdapter.layout.supportedPositions.filter { $0.rawValue > state.rawValue }
+        let remains = layoutAdapter.supportedPositions.filter { $0.rawValue > state.rawValue }
        return remains.count == 0
    }

@@ -48,8 +41,10 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
    private var animator: UIViewPropertyAnimator?
    private var initialFrame: CGRect = .zero
    private var initialScrollOffset: CGPoint = .zero
+    private var initialScrollInset: UIEdgeInsets = .zero
    private var transOffsetY: CGFloat = 0
-    private var interactionInProgress: Bool = false
+
+    var interactionInProgress: Bool = false

    // Scroll handling
    private var stopScrollDeceleration: Bool = false
@@ -60,7 +55,10 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate

    init(_ vc: FloatingPanelController, layout: FloatingPanelLayout, behavior: FloatingPanelBehavior) {
        viewcontroller = vc
-        surfaceView = vc.view as! FloatingPanelSurfaceView
+
+        surfaceView = FloatingPanelSurfaceView()
+        surfaceView.backgroundColor = .white
+
        backdropView = FloatingPanelBackdropView()
        backdropView.backgroundColor = .black
        backdropView.alpha = 0.0
@@ -70,8 +68,6 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
                                                        layout: layout)
        self.behavior = behavior

-        state = layoutAdapter.layout.initialPosition
-
        panGesture = FloatingPanelPanGestureRecognizer()

        if #available(iOS 11.0, *) {
@@ -85,29 +81,11 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        panGesture.delegate = self
    }

-    func setUpViews(in vc: UIViewController) {
-        unowned let view = vc.view!
-
-        view.insertSubview(backdropView, belowSubview: surfaceView)
-        backdropView.frame = view.bounds
-
-        layoutAdapter.prepareLayout(toParent: vc)
-    }
-
    func move(to: FloatingPanelPosition, animated: Bool, completion: (() -> Void)? = nil) {
        move(from: state, to: to, animated: animated, completion: completion)
    }

-    func present(animated: Bool, completion: (() -> Void)? = nil) {
-        self.layoutAdapter.activateLayout(of: nil)
-        move(from: nil, to: layoutAdapter.layout.initialPosition, animated: animated, completion: completion)
-    }
-
-    func dismiss(animated: Bool, completion: (() -> Void)? = nil) {
-        move(from: state, to: nil, animated: animated, completion: completion)
-    }
-
-    private func move(from: FloatingPanelPosition?, to: FloatingPanelPosition?, animated: Bool, completion: (() -> Void)? = nil) {
+    private func move(from: FloatingPanelPosition, to: FloatingPanelPosition, animated: Bool, completion: (() -> Void)? = nil) {
        if to != .full {
            lockScrollView()
        }
@@ -115,23 +93,19 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        if animated {
            let animator: UIViewPropertyAnimator
            switch (from, to) {
-            case (nil, let to?):
+            case (.hidden, let to):
                animator = behavior.addAnimator(self.viewcontroller, to: to)
-            case (let from?, let to?):
-                animator = behavior.moveAnimator(self.viewcontroller, from: from, to: to)
-            case (let from?, nil):
+            case (let from, .hidden):
                animator = behavior.removeAnimator(self.viewcontroller, from: from)
-            case (nil, nil):
-                fatalError()
+            case (let from, let to):
+                animator = behavior.moveAnimator(self.viewcontroller, from: from, to: to)
            }

            animator.addAnimations { [weak self] in
-                guard let self = self else { return }
+                guard let `self` = self else { return }

                self.updateLayout(to: to)
-                if let to = to {
-                    self.state = to
-                }
+                self.state = to
            }
            animator.addCompletion { _ in
                completion?()
@@ -139,16 +113,14 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
            animator.startAnimation()
        } else {
            self.updateLayout(to: to)
-            if let to = to {
-                self.state = to
-            }
+            self.state = to
            completion?()
        }
    }

    // MARK: - Layout update

-    private func updateLayout(to target: FloatingPanelPosition?) {
+    private func updateLayout(to target: FloatingPanelPosition) {
        self.layoutAdapter.activateLayout(of: target)
    }

@@ -178,6 +150,10 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate

        /* log.debug("shouldRecognizeSimultaneouslyWith", otherGestureRecognizer) */

+        if viewcontroller.delegate?.floatingPanel(viewcontroller, shouldRecognizeSimultaneouslyWith: otherGestureRecognizer) ?? false {
+            return true
+        }
+
        // all gestures of the tracking scroll view should be recognized in parallel
        // and handle them in self.handle(panGesture:)
        return scrollView?.gestureRecognizers?.contains(otherGestureRecognizer) ?? false
@@ -185,35 +161,14 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate

    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        guard gestureRecognizer == panGesture else { return false }
-
        /* log.debug("shouldBeRequiredToFailBy", otherGestureRecognizer) */
-
-        // The tracking scroll view's gestures should begin without waiting for the pan gesture failure.
-        // `scrollView.gestureRecognizers` can contains the following gestures
-        // * UIScrollViewDelayedTouchesBeganGestureRecognizer
-        // * UIScrollViewPanGestureRecognizer (scrollView.panGestureRecognizer)
-        // * _UIDragAutoScrollGestureRecognizer
-        // * _UISwipeActionPanGestureRecognizer
-        // * UISwipeDismissalGestureRecognizer
-        if let scrollView = scrollView,
-            let scrollGestureRecognizers = scrollView.gestureRecognizers,
-            scrollGestureRecognizers.contains(otherGestureRecognizer) {
-            return false
-        }
-
-        // Long press gesture should begin without waiting for the pan gesture failure.
-        if otherGestureRecognizer is UILongPressGestureRecognizer {
-            return false
-        }
-
-        // Do not begin any other gestures until the pan gesture fails.
-        return true
+        return false
    }

    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRequireFailureOf otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        guard gestureRecognizer == panGesture else { return false }

-        log.debug("shouldRequireFailureOf", otherGestureRecognizer)
+        /* log.debug("shouldRequireFailureOf", otherGestureRecognizer) */

        // Should begin the pan gesture without waiting for the tracking scroll view's gestures.
        // `scrollView.gestureRecognizers` can contains the following gestures
@@ -231,6 +186,11 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
            }
        }

+        if viewcontroller.delegate?.floatingPanel(viewcontroller, shouldRecognizeSimultaneouslyWith: otherGestureRecognizer) ?? false {
+            return false
+        }
+
+
        switch otherGestureRecognizer {
        case is UIPanGestureRecognizer,
             is UISwipeGestureRecognizer,
@@ -290,7 +250,9 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
                        return
                    }
                    // Fix the scroll offset in moving the panel from half and tip.
-                    scrollView.contentOffset.y = initialScrollOffset.y
+                    scrollView.contentOffset.y = initialScrollOffset.y + (initialScrollInset.top - scrollView.contentInset.top)
+                case .hidden:
+                    fatalError("A floating panel hidden must not be used by a user")
                }

                // Always hide a scroll indicator at the non-top.
@@ -313,7 +275,7 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
                return
            }

-            if let animator = self.animator {
+            if let animator = self.animator, animator.isInterruptible {
                animator.stopAnimation(true)
                self.animator = nil
            }
@@ -399,6 +361,12 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate

    private func panningEnd(with translation: CGPoint, velocity: CGPoint) {
        log.debug("panningEnd")
+
+        guard state != .hidden else {
+            log.debug("Already hidden")
+            return
+        }
+
        if interactionInProgress == false {
            initialFrame = surfaceView.frame
        }
@@ -411,7 +379,21 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        endInteraction(for: targetPosition)

        if isRemovalInteractionEnabled, isBottomState {
-            if startRemovalAnimation(with: translation, velocity: velocity, distance: distance) {
+            let velocityVector = (distance != 0) ? CGVector(dx: 0,
+                                                            dy: max(min(velocity.y/distance, behavior.removalVelocity), 0.0)) : .zero
+
+
+
+            if shouldStartRemovalAnimation(with: translation, velocityVector: velocityVector) {
+
+                viewcontroller.delegate?.floatingPanelDidEndDraggingToRemove(viewcontroller, withVelocity: velocity)
+                self.startRemovalAnimation(with: velocityVector) { [weak self] in
+                    guard let `self` = self else { return }
+                    self.viewcontroller.dismiss(animated: false, completion: { [weak self] in
+                        guard let `self` = self else { return }
+                        self.viewcontroller.delegate?.floatingPanelDidEndRemove(self.viewcontroller)
+                    })
+                }
                return
            }
        }
@@ -422,30 +404,32 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        startAnimation(to: targetPosition, at: distance, with: velocity)
    }

-    private func startRemovalAnimation(with translation: CGPoint, velocity: CGPoint, distance: CGFloat) -> Bool {
+    private func shouldStartRemovalAnimation(with translation: CGPoint, velocityVector: CGVector) -> Bool {
        let posY = layoutAdapter.positionY(for: state)
        let currentY = getCurrentY(from: initialFrame, with: translation)
        let safeAreaBottomY = layoutAdapter.safeAreaBottomY
        let vth = behavior.removalVelocity
        let pth = max(min(behavior.removalProgress, 1.0), 0.0)
-        let velocityVector = (distance != 0) ? CGVector(dx: 0, dy: max(min(velocity.y/distance, vth), 0.0)) : .zero

-        guard (safeAreaBottomY - posY) != 0 else { return false }
-        guard (currentY - posY) / (safeAreaBottomY - posY) >= pth || velocityVector.dy == vth else { return false }
+        let num = (currentY - posY)
+        let den = (safeAreaBottomY - posY)

-        viewcontroller.delegate?.floatingPanelDidEndDraggingToRemove(viewcontroller, withVelocity: velocity)
+        guard num >= 0, den != 0, (num / den >= pth || velocityVector.dy == vth)
+        else { return false }
+
+        return true
+    }
+
+    private func startRemovalAnimation(with velocityVector: CGVector, completion: (() -> Void)?) {
        let animator = self.behavior.removalInteractionAnimator(self.viewcontroller, with: velocityVector)
+
        animator.addAnimations { [weak self] in
-            guard let self = self else { return }
-            self.updateLayout(to: nil)
+            self?.updateLayout(to: .hidden)
        }
-        animator.addCompletion({ [weak self] (_) in
-            guard let self = self else { return }
-            self.viewcontroller.removePanelFromParent(animated: false)
-            self.viewcontroller.delegate?.floatingPanelDidEndRemove(self.viewcontroller)
+        animator.addCompletion({ _ in
+            completion?()
        })
        animator.startAnimation()
-        return true
    }

    private func startInteraction(with translation: CGPoint) {
@@ -454,11 +438,27 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        initialFrame = surfaceView.frame
        if let scrollView = scrollView {
            initialScrollOffset = scrollView.contentOffset
+            initialScrollInset = scrollView.contentInset
        }
        transOffsetY = translation.y

        viewcontroller.delegate?.floatingPanelWillBeginDragging(viewcontroller)

+        if state == .full {
+            viewcontroller.contentViewController?.view?.constraints.forEach({ (const) in
+                switch viewcontroller.contentViewController?.layoutGuide.bottomAnchor {
+                case const.firstAnchor:
+                    (const.secondItem as? UIView)?.disableAutoLayout()
+                    const.isActive = false
+                case const.secondAnchor:
+                    (const.firstItem as? UIView)?.disableAutoLayout()
+                    const.isActive = false
+                default:
+                    break
+                }
+            })
+        }
+
        interactionInProgress = true
    }

@@ -470,6 +470,21 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        if targetPosition != .full {
            lockScrollView()
        }
+
+        if state == .full {
+            viewcontroller.contentViewController?.view?.constraints.forEach({ (const) in
+                switch viewcontroller.contentViewController?.layoutGuide.bottomAnchor {
+                case const.firstAnchor:
+                    (const.secondItem as? UIView)?.enableAutoLayout()
+                    const.isActive = true
+                case const.secondAnchor:
+                    (const.firstItem as? UIView)?.enableAutoLayout()
+                    const.isActive = true
+                default:
+                    break
+                }
+            })
+        }
    }

    private func getCurrentY(from rect: CGRect, with translation: CGPoint) -> CGFloat {
@@ -487,15 +502,18 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
                return max(topY, min(bottomY, y))
            }
        }
-        return max(topY - topBuffer, min(bottomY + bottomBuffer, y))
+        let topMax = layoutAdapter.topMaxY
+        let bottomMax = layoutAdapter.bottomMaxY
+        return max(max(topY - topBuffer, topMax), min(min(bottomY + bottomBuffer, bottomMax), y))
    }

    private func startAnimation(to targetPosition: FloatingPanelPosition, at distance: CGFloat, with velocity: CGPoint) {
+        log.debug("startAnimation", targetPosition, distance, velocity)
        let targetY = layoutAdapter.positionY(for: targetPosition)
        let velocityVector = (distance != 0) ? CGVector(dx: 0, dy: max(min(velocity.y/distance, 30.0), -30.0)) : .zero
        let animator = behavior.interactionAnimator(self.viewcontroller, to: targetPosition, with: velocityVector)
        animator.addAnimations { [weak self] in
-            guard let self = self else { return }
+            guard let `self` = self else { return }
            if self.state == targetPosition {
                self.surfaceView.frame.origin.y = targetY
                self.layoutAdapter.setBackdropAlpha(of: targetPosition)
@@ -505,7 +523,7 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
            self.state = targetPosition
        }
        animator.addCompletion { [weak self] pos in
-            guard let self = self else { return }
+            guard let `self` = self else { return }
            guard
                self.interactionInProgress == false,
                animator == self.animator,
@@ -534,6 +552,7 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
        let middleY = layoutAdapter.middleY
        let bottomY = layoutAdapter.bottomY
        let currentY = getCurrentY(from: initialFrame, with: translation)
+
        switch targetPosition {
        case .full:
            return CGFloat(fabs(Double(currentY - topY)))
@@ -541,13 +560,15 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
            return CGFloat(fabs(Double(currentY - middleY)))
        case .tip:
            return CGFloat(fabs(Double(currentY - bottomY)))
+        case .hidden:
+            fatalError("A floating panel hidden must not be used by a user")
        }
    }

    private func directionalPosition(with translation: CGPoint) -> FloatingPanelPosition {
        let currentY = getCurrentY(from: initialFrame, with: translation)

-        let supportedPositions: Set = layoutAdapter.layout.supportedPositions
+        let supportedPositions = layoutAdapter.supportedPositions

        if supportedPositions.count == 1 {
            return state
@@ -567,12 +588,14 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
                }
                return currentY > middleY ? .tip : .half
            case .half:
-                return translation.y >= 0 ? .tip : .full
+                return currentY > middleY ? .tip : .full
            case .tip:
                if translation.y >= 0 {
                    return .tip
                }
                return currentY > middleY ? .half : .full
+            case .hidden:
+                fatalError("A floating panel hidden must not be used by a user")
            }
        }
    }
@@ -580,7 +603,7 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
    private func redirectionalPosition(with translation: CGPoint) -> FloatingPanelPosition {
        let currentY = getCurrentY(from: initialFrame, with: translation)

-        let supportedPositions: Set = layoutAdapter.layout.supportedPositions
+        let supportedPositions = layoutAdapter.supportedPositions

        if supportedPositions.count == 1 {
            return state
@@ -600,6 +623,8 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
                return .half
            case .tip:
                return currentY > middleY ? .tip : .half
+            case .hidden:
+                fatalError("A floating panel hidden must not be used by a user")
            }
        }
    }
@@ -607,13 +632,13 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
    // Distance travelled after decelerating to zero velocity at a constant rate.
    // Refer to the slides p176 of [Designing Fluid Interfaces](https://developer.apple.com/videos/play/wwdc2018/803/)
    private func project(initialVelocity: CGFloat) -> CGFloat {
-        let decelerationRate = UIScrollView.DecelerationRate.normal.rawValue
+        let decelerationRate = UIScrollViewDecelerationRateNormal
        return (initialVelocity / 1000.0) * decelerationRate / (1.0 - decelerationRate)
    }

    private func targetPosition(with translation: CGPoint, velocity: CGPoint) -> (FloatingPanelPosition) {
        let currentY = getCurrentY(from: initialFrame, with: translation)
-        let supportedPositions: Set = layoutAdapter.layout.supportedPositions
+        let supportedPositions = layoutAdapter.supportedPositions

        if supportedPositions.count == 1 {
            return state
@@ -652,6 +677,8 @@ class FloatingPanel: NSObject, UIGestureRecognizerDelegate, UIScrollViewDelegate
            case .tip:
                target = .half
                forwardYDirection = false
+            case .hidden:
+                fatalError("A floating panel hidden must not be used by a user")
            }

            let redirectionalProgress = max(min(behavior.redirectionalProgress(viewcontroller, from: state, to: target), 1.0), 0.0)
@@ -85,7 +85,9 @@ public extension FloatingPanelBehavior {
 class FloatingPanelDefaultBehavior: FloatingPanelBehavior {
    func interactionAnimator(_ fpc: FloatingPanelController, to targetPosition: FloatingPanelPosition, with velocity: CGVector) -> UIViewPropertyAnimator {
        let timing = timeingCurve(with: velocity)
-        return UIViewPropertyAnimator(duration: 0, timingParameters: timing)
+        let animator = UIViewPropertyAnimator(duration: 0, timingParameters: timing)
+        animator.isInterruptible = false
+        return animator
    }

    private func timeingCurve(with velocity: CGVector) -> UITimingCurveProvider {
@@ -27,6 +27,8 @@ public protocol FloatingPanelControllerDelegate: class {
    func floatingPanelDidEndDraggingToRemove(_ vc: FloatingPanelController, withVelocity velocity: CGPoint)
    // called when its views are removed from a parent view controller
    func floatingPanelDidEndRemove(_ vc: FloatingPanelController)
+
+    func floatingPanel(_ vc: FloatingPanelController, shouldRecognizeSimultaneouslyWith gestureRecognizer: UIGestureRecognizer) -> Bool
 }

 public extension FloatingPanelControllerDelegate {
@@ -45,19 +47,22 @@ public extension FloatingPanelControllerDelegate {

    func floatingPanelDidEndDraggingToRemove(_ vc: FloatingPanelController, withVelocity velocity: CGPoint) {}
    func floatingPanelDidEndRemove(_ vc: FloatingPanelController) {}
+
+    func floatingPanel(_ vc: FloatingPanelController, shouldRecognizeSimultaneouslyWith gestureRecognizer: UIGestureRecognizer) -> Bool { return false }
 }

-public enum FloatingPanelPosition: Int, CaseIterable {
+
+public enum FloatingPanelPosition: Int {
    case full
    case half
    case tip
+    case hidden
 }

 ///
 /// A container view controller to display a floating panel to present contents in parallel as a user wants.
 ///
 public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UIGestureRecognizerDelegate {
-
    /// Constants indicating how safe area insets are added to the adjusted content inset.
    public enum ContentInsetAdjustmentBehavior: Int {
        case always
@@ -65,11 +70,15 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
    }

    /// The delegate of the floating panel controller object.
-    public weak var delegate: FloatingPanelControllerDelegate?
+    public weak var delegate: FloatingPanelControllerDelegate?{
+        didSet{
+            didUpdateDelegate()
+        }
+    }

    /// Returns the surface view managed by the controller object. It's the same as `self.view`.
    public var surfaceView: FloatingPanelSurfaceView! {
-        return view as? FloatingPanelSurfaceView
+        return floatingPanel.surfaceView
    }

    /// Returns the backdrop view managed by the controller object.
@@ -102,7 +111,7 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
        return floatingPanel.behavior
    }

-    /// The content insets of the tracking scroll view derived from the safe area of the parent view
+    /// The content insets of the tracking scroll view derived from this safe area
    public var adjustedContentInsets: UIEdgeInsets {
        return floatingPanel.layoutAdapter.adjustedContentInsets
    }
@@ -126,63 +135,89 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
    private var _contentViewController: UIViewController?

    private var floatingPanel: FloatingPanel!
-    private var layoutInsetsObservations: [NSKeyValueObservation] = []
+    private var safeAreaInsetsObservation: NSKeyValueObservation?
+    private let modalTransition = FloatingPanelModalTransition()

-    required init?(coder aDecoder: NSCoder) {
+    required public init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
-
-        floatingPanel = FloatingPanel(self,
-                                      layout: fetchLayout(for: self.traitCollection),
-                                      behavior: fetchBehavior(for: self.traitCollection))
+        setUp()
    }

    /// Initialize a newly created floating panel controller.
-    public init() {
+    public init(delegate: FloatingPanelControllerDelegate? = nil) {
        super.init(nibName: nil, bundle: nil)
+        self.delegate = delegate
+        setUp()
+    }
+
+    private func setUp() {
+        _ = FloatingPanelController.dismissSwizzling
+
+        modalPresentationStyle = .custom
+        transitioningDelegate = modalTransition

        floatingPanel = FloatingPanel(self,
                                      layout: fetchLayout(for: self.traitCollection),
                                      behavior: fetchBehavior(for: self.traitCollection))
    }

+    private func didUpdateDelegate(){
+        floatingPanel.layoutAdapter.layout = fetchLayout(for: traitCollection)
+        floatingPanel.behavior = fetchBehavior(for: self.traitCollection)
+    }
+    
+    // MARK:- Overrides
+
    /// Creates the view that the controller manages.
    override public func loadView() {
        assert(self.storyboard == nil, "Storyboard isn't supported")

-        let view = FloatingPanelSurfaceView()
-        view.backgroundColor = .white
+        let view = FloatingPanelPassThroughView()
+        view.backgroundColor = .clear
+
+        backdropView.frame = view.bounds
+        view.addSubview(backdropView)
+
+        surfaceView.frame = view.bounds
+        view.addSubview(surfaceView)

        self.view = view as UIView
    }

+    public override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        if #available(iOS 11.0, *) {}
+        else {
+            // Because {top,bottom}LayoutGuide is managed as a view
+            self.update(safeAreaInsets: layoutInsets)
+        }
+    }
+
+    public override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
+        super.viewWillTransition(to: size, with: coordinator)
+
+        if view.translatesAutoresizingMaskIntoConstraints {
+            view.frame.size = size
+            view.layoutIfNeeded()
+        }
+    }
+
    public override func willTransition(to newCollection: UITraitCollection, with coordinator: UIViewControllerTransitionCoordinator) {
        super.willTransition(to: newCollection, with: coordinator)

        // Change layout for a new trait collection
-        updateLayout(for: newCollection)
+        reloadLayout(for: newCollection)
+        setUpLayout()

        floatingPanel.behavior = fetchBehavior(for: newCollection)
    }

-    public override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
-        super.traitCollectionDidChange(previousTraitCollection)
-        guard previousTraitCollection != traitCollection else { return }
-
-        if let parent = parent {
-            self.update(safeAreaInsets: parent.layoutInsets)
-        }
+    public override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        safeAreaInsetsObservation = nil
    }

-    public override func viewDidAppear(_ animated: Bool) {
-        super.viewDidAppear(animated)
-
-        // Need to update safeAreaInsets here to ensure that the `adjustedContentInsets` has a correct value.
-        // Because the parent VC does not call viewSafeAreaInsetsDidChange() expectedly and
-        // `view.safeAreaInsets` has a correct value of the bottom inset here.
-        if let parent = parent {
-            self.update(safeAreaInsets: parent.layoutInsets)
-        }
-    }
+    // MARK:- Privates

    private func fetchLayout(for traitCollection: UITraitCollection) -> FloatingPanelLayout {
        switch traitCollection.verticalSizeClass {
@@ -198,12 +233,17 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
    }

    private func update(safeAreaInsets: UIEdgeInsets) {
-        // preserve the current content offset
-        let contentOffset = scrollView?.contentOffset
+        // Don't re-layout the surface on SafeArea.Bottom enabled/disabled in interaction progress
+        guard
+            floatingPanel.layoutAdapter.safeAreaInsets != safeAreaInsets,
+            self.floatingPanel.interactionInProgress == false
+        else { return }

-        floatingPanel.safeAreaInsets = safeAreaInsets
+        log.debug("Update safeAreaInsets", safeAreaInsets)

-        scrollView?.contentOffset = contentOffset ?? .zero
+        floatingPanel.layoutAdapter.safeAreaInsets = safeAreaInsets
+
+        setUpLayout()

        switch contentInsetAdjustmentBehavior {
        case .always:
@@ -214,17 +254,58 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
        }
    }

-    private func updateLayout(for traitCollection: UITraitCollection) {
+    private func reloadLayout(for traitCollection: UITraitCollection) {
        floatingPanel.layoutAdapter.layout = fetchLayout(for: traitCollection)
+        floatingPanel.layoutAdapter.prepareLayout(in: self)
+    }

-        guard let parent = parent else { return }
+    private func setUpLayout() {
+        // preserve the current content offset
+        let contentOffset = scrollView?.contentOffset

-        floatingPanel.layoutAdapter.prepareLayout(toParent: parent)
+        floatingPanel.layoutAdapter.updateHeight()
        floatingPanel.layoutAdapter.activateLayout(of: floatingPanel.state)
+
+        scrollView?.contentOffset = contentOffset ?? .zero
    }

    // MARK: - Container view controller interface

+    /// Shows the surface view at the initial position defined by the current layout
+    public func show(animated: Bool = false, completion: (() -> Void)? = nil) {
+        // Must apply the current layout here
+        reloadLayout(for: traitCollection)
+        setUpLayout()
+
+        if #available(iOS 11.0, *) {
+            // Must track the safeAreaInsets of `self.view` to update the layout.
+            // There are 2 reasons.
+            // 1. This or the parent VC doesn't call viewSafeAreaInsetsDidChange() on the bottom
+            // inset's update expectedly.
+            // 2. The safe area top inset can be variable on the large title navigation bar(iOS11+).
+            // That's why it needs the observation to keep `adjustedContentInsets` correct.
+            safeAreaInsetsObservation = self.observe(\.view.safeAreaInsets) { [weak self] (vc, chaneg) in
+                guard let `self` = self else { return }
+                self.update(safeAreaInsets: vc.layoutInsets)
+            }
+        } else {
+            // KVOs for topLayoutGuide & bottomLayoutGuide are not effective.
+            // Instead, update(safeAreaInsets:) is called at `viewDidLayoutSubviews()`
+        }
+
+        move(to: floatingPanel.layoutAdapter.layout.initialPosition,
+             animated: animated,
+             completion: completion)
+    }
+
+    /// Hides the surface view to the hidden position
+    public func hide(animated: Bool = false, completion: (() -> Void)? = nil) {
+        safeAreaInsetsObservation = nil
+        move(to: .hidden,
+             animated: animated,
+             completion: completion)
+    }
+
    /// Adds the view managed by the controller as a child of the specified view controller.
    /// - Parameters:
    ///     - parent: A parent view controller object that displays FloatingPanelController's view. A container view controller object isn't applicable.
@@ -241,43 +322,26 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
        precondition((parent is UITableViewController) == false, "UITableViewController should not be the parent because the view is a table view so that a floating panel doens't work well")
        precondition((parent is UICollectionViewController) == false, "UICollectionViewController should not be the parent because the view is a collection view so that a floating panel doens't work well")

-        view.frame = parent.view.bounds
        if let belowView = belowView {
            parent.view.insertSubview(self.view, belowSubview: belowView)
        } else {
            parent.view.addSubview(self.view)
        }

-        layoutInsetsObservations.removeAll()
+        parent.addChildViewController(self)

-        // Must track safeAreaInsets/{top,bottom}LayoutGuide of the `parent.view`
-        // to update floatingPanel.safeAreaInsets`. There are 2 reasons.
-        // 1. The parent VC doesn't call viewSafeAreaInsetsDidChange() on the bottom
-        // inset's update expectedly.
-        // 2. The safe area top inset can be variable on the large title navigation bar.
-        // That's why it needs the observation to keep `adjustedContentInsets` correct.
-        if #available(iOS 11.0, *) {
-            let observaion = parent.observe(\.view.safeAreaInsets) { [weak self] (vc, chaneg) in
-                guard let self = self else { return }
-                self.update(safeAreaInsets: vc.layoutInsets)
-            }
-            layoutInsetsObservations.append(observaion)
-        } else {
-            // KVOs for topLayoutGuide & bottomLayoutGuide are not effective.
-            // Instead, safeAreaInsets will be updated in viewDidAppear()
-        }
+        view.frame = parent.view.bounds // Needed for a correct safe area configuration
+        view.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            self.view.topAnchor.constraint(equalTo: parent.view.topAnchor, constant: 0.0),
+            self.view.leftAnchor.constraint(equalTo: parent.view.leftAnchor, constant: 0.0),
+            self.view.rightAnchor.constraint(equalTo: parent.view.rightAnchor, constant: 0.0),
+            self.view.bottomAnchor.constraint(equalTo: parent.view.bottomAnchor, constant: 0.0),
+            ])

-        parent.addChild(self)
-
-        // Must set a layout again here because `self.traitCollection` is applied correctly once it's added to a parent VC
-        floatingPanel.layoutAdapter.layout = fetchLayout(for: traitCollection)
-        floatingPanel.behavior = fetchBehavior(for: traitCollection)
-
-        floatingPanel.setUpViews(in: parent)
-
-        floatingPanel.present(animated: animated) { [weak self] in
-            guard let self = self else { return }
-            self.didMove(toParent: parent)
+        show(animated: animated) { [weak self] in
+            guard let `self` = self else { return }
+            self.didMove(toParentViewController: self)
        }
    }

@@ -291,15 +355,11 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
            return
        }

-        layoutInsetsObservations.removeAll()
-
-        floatingPanel.dismiss(animated: animated) { [weak self] in
-            guard let self = self else { return }
-
-            self.willMove(toParent: nil)
+        hide(animated: animated) { [weak self] in
+            guard let `self` = self else { return }
+            self.willMove(toParentViewController: nil)
            self.view.removeFromSuperview()
-	      	self.backdropView.removeFromSuperview()
-            self.removeFromParent()
+            self.removeFromParentViewController()
            completion?()
        }
    }
@@ -310,22 +370,29 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
    ///     - animated: Pass true to animate the presentation; otherwise, pass false.
    ///     - completion: The block to execute after the view controller has finished moving. This block has no return value and takes no parameters. You may specify nil for this parameter.
    public func move(to: FloatingPanelPosition, animated: Bool, completion: (() -> Void)? = nil) {
+        precondition(floatingPanel.layoutAdapter.vc != nil, "Use show(animated:completion)")
        floatingPanel.move(to: to, animated: animated, completion: completion)
    }

    /// Sets the view controller responsible for the content portion of the floating panel..
    public func set(contentViewController: UIViewController?) {
        if let vc = _contentViewController {
-            vc.willMove(toParent: nil)
+            vc.willMove(toParentViewController: nil)
            vc.view.removeFromSuperview()
-            vc.removeFromParent()
+            vc.removeFromParentViewController()
+            
+            if let scrollView = floatingPanel.scrollView,
+                let delegate = floatingPanel.userScrollViewDelegate,
+                vc.view.subviews.contains(scrollView) {
+                scrollView.delegate = delegate
+            }
        }

        if let vc = contentViewController {
-            let surfaceView = self.view as! FloatingPanelSurfaceView
-            surfaceView.add(childView: vc.view)
-            addChild(vc)
-            vc.didMove(toParent: self)
+            addChildViewController(vc)
+            let surfaceView = floatingPanel.surfaceView
+            surfaceView.add(contentView: vc.view)
+            vc.didMove(toParentViewController: self)
        }

        _contentViewController = contentViewController
@@ -363,7 +430,7 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
            if #available(iOS 11.0, *) {
                scrollView.contentInsetAdjustmentBehavior = .never
            } else {
-                children.forEach { (vc) in
+                childViewControllers.forEach { (vc) in
                    vc.automaticallyAdjustsScrollViewInsets = false
                }
            }
@@ -378,11 +445,12 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
    /// by the controller immediately.
    ///
    /// This method updates the `FloatingPanelLayout` object from the delegate and
-    /// then it calls `layoutIfNeeded()` of the parent's root view to force the view
+    /// then it calls `layoutIfNeeded()` of the root view to force the view
    /// to update the floating panel's layout immediately. It can be called in an
    /// animation block.
    public func updateLayout() {
-        updateLayout(for: view.traitCollection)
+        reloadLayout(for: traitCollection)
+        setUpLayout()
    }

    /// Returns the y-coordinate of the point at the origin of the surface view
@@ -394,6 +462,54 @@ public class FloatingPanelController: UIViewController, UIScrollViewDelegate, UI
            return floatingPanel.layoutAdapter.middleY
        case .tip:
            return floatingPanel.layoutAdapter.bottomY
+        case .hidden:
+            return floatingPanel.layoutAdapter.hiddenY
        }
    }
 }
+
+extension FloatingPanelController {
+    private static let dismissSwizzling: Any? = {
+        let aClass: AnyClass! = UIViewController.self //object_getClass(vc)
+        if let imp = class_getMethodImplementation(aClass, #selector(dismiss(animated:completion:))),
+            let originalAltMethod = class_getInstanceMethod(aClass, #selector(fp_original_dismiss(animated:completion:))) {
+            method_setImplementation(originalAltMethod, imp)
+        }
+        let originalMethod = class_getInstanceMethod(aClass, #selector(dismiss(animated:completion:)))
+        let swizzledMethod = class_getInstanceMethod(aClass, #selector(fp_dismiss(animated:completion:)))
+        if let originalMethod = originalMethod, let swizzledMethod = swizzledMethod {
+            // switch implementation..
+            method_exchangeImplementations(originalMethod, swizzledMethod)
+        }
+        return nil
+    }()
+}
+
+public extension UIViewController {
+    @objc public func fp_original_dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
+        // Implementation will be replaced by IMP of self.dismiss(animated:completion:)
+    }
+    @objc public func fp_dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
+        // Call dismiss(animated:completion:) to a content view controller
+        if let fpc = parent as? FloatingPanelController {
+            if fpc.presentingViewController != nil {
+                self.fp_original_dismiss(animated: flag, completion: completion)
+            } else {
+                fpc.removePanelFromParent(animated: flag, completion: completion)
+            }
+            return
+        }
+        // Call dismiss(animated:completion:) to FloatingPanelController directly
+        if let fpc = self as? FloatingPanelController {
+            if fpc.presentingViewController != nil {
+                self.fp_original_dismiss(animated: flag, completion: completion)
+            } else {
+                fpc.removePanelFromParent(animated: flag, completion: completion)
+            }
+            return
+        }
+
+        // For other view controllers
+        self.fp_original_dismiss(animated: flag, completion: completion)
+    }
+}
@@ -5,11 +5,46 @@

 import UIKit

+/// FloatingPanelFullScreenLayout
+///
+/// Use the layout protocol if you want to configure a full inset from Superview.Top, not SafeArea.Top.
+/// It can't be used with FloatingPanelIntrinsicLayout.
+public protocol FloatingPanelFullScreenLayout: FloatingPanelLayout { }
+
+/// FloatingPanelIntrinsicLayout
+///
+/// Use the layout protocol if you want to layout a panel using the intrinsic height.
+/// It can't be used with FloatingPanelFullScreenLayout.
+///
+/// - Attention:
+///     `insetFor(position:)` must return `nil` for the full position. Because
+///     the inset is determined automatically by the intrinsic height.
+///     You can customize insets only for the half, tip and hidden positions.
+public protocol FloatingPanelIntrinsicLayout: FloatingPanelLayout { }
+
+public extension FloatingPanelIntrinsicLayout {
+    var initialPosition: FloatingPanelPosition {
+        return .full
+    }
+
+    var supportedPositions: Set<FloatingPanelPosition> {
+        return [.full]
+    }
+
+    func insetFor(position: FloatingPanelPosition) -> CGFloat? {
+        return nil
+    }
+}
+
 public protocol FloatingPanelLayout: class {
    /// Returns the initial position of a floating panel.
    var initialPosition: FloatingPanelPosition { get }

-    /// Returns a set of FloatingPanelPosition objects to tell the applicable positions of the floating panel controller. Default is all of them.
+    /// Returns a set of FloatingPanelPosition objects to tell the applicable
+    /// positions of the floating panel controller.
+    ///
+    /// By default, it returns all position except for `hidden` position. Because
+    /// it's always supported by `FloatingPanelController` so you don't need to return it.
    var supportedPositions: Set<FloatingPanelPosition> { get }

    /// Return the interaction buffer to the top from the top position. Default is 6.0.
@@ -18,10 +53,13 @@ public protocol FloatingPanelLayout: class {
    /// Return the interaction buffer to the bottom from the bottom position. Default is 6.0.
    var bottomInteractionBuffer: CGFloat { get }

-    /// Returns a CGFloat value to determine a floating panel height for each position(full, half and tip).
-    /// A value for full position indicates a top inset from a safe area.
-    /// On the other hand, values for half and tip positions indicate bottom insets from a safe area.
-    /// If a position doesn't contain the supported positions, return nil.
+    /// Returns a CGFloat value to determine a Y coordinate of a floating panel for each position(full, half, tip and hidden).
+    ///
+    /// Its returning value indicates a different inset for each position.
+    /// For full position, a top inset from a safe area in `FloatingPanelController.view`.
+    /// For half or tip position, a bottom inset from the safe area.
+    /// For hidden position, a bottom inset from `FloatingPanelController.view`.
+    /// If a position isn't supported or the default value is used, return nil.
    func insetFor(position: FloatingPanelPosition) -> CGFloat?

    /// Returns X-axis and width layout constraints of the surface view of a floating panel.
@@ -41,9 +79,9 @@ public extension FloatingPanelLayout {
    var bottomInteractionBuffer: CGFloat { return 6.0 }

    var supportedPositions: Set<FloatingPanelPosition> {
-        return Set(FloatingPanelPosition.allCases)
+        return Set([.full, .half, .tip])
    }
-    
+
    func prepareLayout(surfaceView: UIView, in view: UIView) -> [NSLayoutConstraint] {
        return [
            surfaceView.leftAnchor.constraint(equalTo: view.sideLayoutGuide.leftAnchor, constant: 0.0),
@@ -66,6 +104,7 @@ public class FloatingPanelDefaultLayout: FloatingPanelLayout {
        case .full: return 18.0
        case .half: return 262.0
        case .tip: return 69.0
+        case .hidden: return nil
        }
    }
 }
@@ -89,7 +128,7 @@ public class FloatingPanelDefaultLandscapeLayout: FloatingPanelLayout {


 class FloatingPanelLayoutAdapter {
-    private weak var parent: UIViewController!
+    weak var vc: UIViewController!
    private weak var surfaceView: FloatingPanelSurfaceView!
    private weak var backdropView: FloatingPanelBackdropView!

@@ -99,15 +138,8 @@ class FloatingPanelLayoutAdapter {
        }
    }

-    var safeAreaInsets: UIEdgeInsets = .zero {
-        didSet {
-            updateHeight()
-            checkLayoutConsistance()
-        }
-    }
+    var safeAreaInsets: UIEdgeInsets = .zero

-    private var parentHeight: CGFloat = 0.0
-    private var heightBuffer: CGFloat = 88.0 // For bounce
    private var fixedConstraints: [NSLayoutConstraint] = []
    private var fullConstraints: [NSLayoutConstraint] = []
    private var halfConstraints: [NSLayoutConstraint] = []
@@ -116,7 +148,11 @@ class FloatingPanelLayoutAdapter {
    private var heightConstraints: [NSLayoutConstraint] = []

    private var fullInset: CGFloat {
-        return layout.insetFor(position: .full) ?? 0.0
+        if layout is FloatingPanelIntrinsicLayout {
+            return intrinsicHeight
+        } else {
+            return layout.insetFor(position: .full) ?? 0.0
+        }
    }
    private var halfInset: CGFloat {
        return layout.insetFor(position: .half) ?? 0.0
@@ -124,10 +160,26 @@ class FloatingPanelLayoutAdapter {
    private var tipInset: CGFloat {
        return layout.insetFor(position: .tip) ?? 0.0
    }
+    private var hiddenInset: CGFloat {
+        return layout.insetFor(position: .hidden) ?? 0.0
+    }
+
+    var supportedPositions: Set<FloatingPanelPosition> {
+        var supportedPositions = layout.supportedPositions
+        supportedPositions.remove(.hidden)
+        return supportedPositions
+    }

    var topY: CGFloat {
-        if layout.supportedPositions.contains(.full) {
-            return (safeAreaInsets.top + fullInset)
+        if supportedPositions.contains(.full) {
+            switch layout {
+            case is FloatingPanelIntrinsicLayout:
+                return surfaceView.superview!.bounds.height - surfaceView.bounds.height
+            case is FloatingPanelFullScreenLayout:
+                return fullInset
+            default:
+                return (safeAreaInsets.top + fullInset)
+            }
        } else {
            return middleY
        }
@@ -138,17 +190,26 @@ class FloatingPanelLayoutAdapter {
    }

    var bottomY: CGFloat {
-        if layout.supportedPositions.contains(.tip) {
+        if supportedPositions.contains(.tip) {
            return surfaceView.superview!.bounds.height - (safeAreaInsets.bottom + tipInset)
        } else {
            return middleY
        }
    }

-    var safeAreaBottomY: CGFloat {
-        return surfaceView.superview!.bounds.height - (safeAreaInsets.bottom)
+    var hiddenY: CGFloat {
+        return surfaceView.superview!.bounds.height
    }

+    var safeAreaBottomY: CGFloat {
+        return surfaceView.superview!.bounds.height - (safeAreaInsets.bottom + hiddenInset)
+    }
+
+    var topMaxY: CGFloat {
+        return layout is FloatingPanelFullScreenLayout ? 0.0 : -safeAreaInsets.top
+    }
+    var bottomMaxY: CGFloat { return safeAreaBottomY }
+
    var adjustedContentInsets: UIEdgeInsets {
        return UIEdgeInsets(top: 0.0,
                            left: 0.0,
@@ -164,136 +225,181 @@ class FloatingPanelLayoutAdapter {
            return middleY
        case .tip:
            return bottomY
+        case .hidden:
+            return hiddenY
        }
    }

+    var intrinsicHeight: CGFloat = 0.0
+
    init(surfaceView: FloatingPanelSurfaceView, backdropView: FloatingPanelBackdropView, layout: FloatingPanelLayout) {
        self.layout = layout
        self.surfaceView = surfaceView
        self.backdropView = backdropView
    }

-    func prepareLayout(toParent parent: UIViewController) {
-        self.parent = parent
+    func updateIntrinsicHeight() {
+        let fittingSize = UILayoutFittingCompressedSize
+        var intrinsicHeight = surfaceView.contentView?.systemLayoutSizeFitting(fittingSize).height ?? 0.0
+        var safeAreaBottom: CGFloat = 0.0
+        if #available(iOS 11.0, *) {
+            safeAreaBottom = surfaceView.contentView?.safeAreaInsets.bottom ?? 0.0
+            if safeAreaBottom > 0 {
+                intrinsicHeight -= safeAreaInsets.bottom
+            }
+        }
+        self.intrinsicHeight = max(intrinsicHeight, 0.0)
+
+        log.debug("Update intrinsic height =", intrinsicHeight,
+                  ", surface(height) =", surfaceView.frame.height,
+                  ", content(height) =", surfaceView.contentView?.frame.height ?? 0.0,
+                  ", content safe area(bottom) =", safeAreaBottom)
+    }
+
+    func prepareLayout(in vc: UIViewController) {
+        self.vc = vc
+
+        NSLayoutConstraint.deactivate(fixedConstraints + fullConstraints + halfConstraints + tipConstraints + offConstraints)

        surfaceView.translatesAutoresizingMaskIntoConstraints = false
        backdropView.translatesAutoresizingMaskIntoConstraints = false

-        NSLayoutConstraint.deactivate(fixedConstraints + fullConstraints + halfConstraints + tipConstraints + offConstraints)
-
        // Fixed constraints of surface and backdrop views
-        let surfaceConstraints = layout.prepareLayout(surfaceView: surfaceView, in: parent.view!)
+        let surfaceConstraints = layout.prepareLayout(surfaceView: surfaceView, in: vc.view!)
        let backdropConstraints = [
-            backdropView.topAnchor.constraint(equalTo: parent.view.topAnchor,
-                                              constant: 0.0),
-            backdropView.leftAnchor.constraint(equalTo: parent.view.leftAnchor,
-                                               constant: 0.0),
-            backdropView.rightAnchor.constraint(equalTo: parent.view.rightAnchor,
-                                                constant: 0.0),
-            backdropView.bottomAnchor.constraint(equalTo: parent.view.bottomAnchor,
-                                                 constant: 0.0),
+            backdropView.topAnchor.constraint(equalTo: vc.view.topAnchor, constant: 0.0),
+            backdropView.leftAnchor.constraint(equalTo: vc.view.leftAnchor,constant: 0.0),
+            backdropView.rightAnchor.constraint(equalTo: vc.view.rightAnchor, constant: 0.0),
+            backdropView.bottomAnchor.constraint(equalTo: vc.view.bottomAnchor, constant: 0.0),
            ]
+
        fixedConstraints = surfaceConstraints + backdropConstraints

        // Flexible surface constarints for full, half, tip and off
-        fullConstraints = [
-            surfaceView.topAnchor.constraint(equalTo: parent.layoutGuide.topAnchor,
-                                             constant: fullInset),
-        ]
+        switch layout {
+        case is FloatingPanelIntrinsicLayout:
+            // Set up on updateHeight()
+            break
+        case is FloatingPanelFullScreenLayout:
+            fullConstraints = [
+                surfaceView.topAnchor.constraint(equalTo: vc.view.topAnchor,
+                                                 constant: fullInset),
+            ]
+        default:
+            fullConstraints = [
+                surfaceView.topAnchor.constraint(equalTo: vc.layoutGuide.topAnchor,
+                                                 constant: fullInset),
+            ]
+        }
+
        halfConstraints = [
-            surfaceView.topAnchor.constraint(equalTo: parent.layoutGuide.bottomAnchor,
+            surfaceView.topAnchor.constraint(equalTo: vc.layoutGuide.bottomAnchor,
                                             constant: -halfInset),
        ]
        tipConstraints = [
-            surfaceView.topAnchor.constraint(equalTo: parent.layoutGuide.bottomAnchor,
+            surfaceView.topAnchor.constraint(equalTo: vc.layoutGuide.bottomAnchor,
                                             constant: -tipInset),
        ]
        offConstraints = [
-            surfaceView.topAnchor.constraint(equalTo: parent.view.bottomAnchor, constant: 0.0),
+            surfaceView.topAnchor.constraint(equalTo: vc.view.bottomAnchor,
+                                             constant: -hiddenInset),
        ]
    }

    // The method is separated from prepareLayout(to:) for the rotation support
    // It must be called in FloatingPanelController.traitCollectionDidChange(_:)
    func updateHeight() {
-        defer {
-            UIView.performWithoutAnimation {
-                surfaceView.superview!.layoutIfNeeded()
-            }
-        }
+        guard let vc = vc else { return }

        NSLayoutConstraint.deactivate(heightConstraints)
-        // Must use the parent height, not the screen height because safe area insets
-        // of the parent are relative values. For example, a view controller in
-        // Navigation controller's safe area insets and frame can be changed whether
-        // the navigation bar is translucent or not.
-        let height = self.parent.view.bounds.height - (safeAreaInsets.top + fullInset)
-        heightConstraints = [
-            surfaceView.heightAnchor.constraint(equalToConstant: height)
-        ]
+
+        switch layout {
+        case is FloatingPanelIntrinsicLayout:
+            updateIntrinsicHeight()
+            heightConstraints = [
+                surfaceView.heightAnchor.constraint(equalToConstant: intrinsicHeight + safeAreaInsets.bottom),
+            ]
+        case is FloatingPanelFullScreenLayout:
+            heightConstraints = [
+                surfaceView.heightAnchor.constraint(equalTo: vc.view.heightAnchor,
+                                                    constant: -fullInset),
+            ]
+        default:
+            heightConstraints = [
+                surfaceView.heightAnchor.constraint(equalTo: vc.view.heightAnchor,
+                                                    constant: -(safeAreaInsets.top + fullInset)),
+            ]
+        }
+
        NSLayoutConstraint.activate(heightConstraints)
-        surfaceView.set(bottomOverflow: heightBuffer)
+
+        surfaceView.bottomOverflow = vc.view.bounds.height + layout.topInteractionBuffer
+
+        if layout is FloatingPanelIntrinsicLayout {
+            NSLayoutConstraint.deactivate(fullConstraints)
+            fullConstraints = [
+                surfaceView.topAnchor.constraint(equalTo: vc.layoutGuide.bottomAnchor,
+                                                 constant: -fullInset),
+            ]
+        }
    }

-    func activateLayout(of state: FloatingPanelPosition?) {
+    func activateLayout(of state: FloatingPanelPosition) {
        defer {
            surfaceView.superview!.layoutIfNeeded()
        }
+
+        var state = state
+
        setBackdropAlpha(of: state)

        NSLayoutConstraint.activate(fixedConstraints)

-        guard var state = state else {
-            NSLayoutConstraint.deactivate(fullConstraints + halfConstraints + tipConstraints)
-            NSLayoutConstraint.activate(offConstraints)
-            return
-        }
-
-        if layout.supportedPositions.contains(state) == false {
+        if supportedPositions.union([.hidden]).contains(state) == false {
            state = layout.initialPosition
        }

        NSLayoutConstraint.deactivate(fullConstraints + halfConstraints + tipConstraints + offConstraints)
        switch state {
        case .full:
-            NSLayoutConstraint.deactivate(halfConstraints + tipConstraints + offConstraints)
            NSLayoutConstraint.activate(fullConstraints)
        case .half:
-            NSLayoutConstraint.deactivate(fullConstraints + tipConstraints + offConstraints)
            NSLayoutConstraint.activate(halfConstraints)
        case .tip:
-            NSLayoutConstraint.deactivate(fullConstraints + halfConstraints + offConstraints)
            NSLayoutConstraint.activate(tipConstraints)
+        case .hidden:
+            NSLayoutConstraint.activate(offConstraints)
        }
    }

-    func setBackdropAlpha(of target: FloatingPanelPosition?) {
-        if let target = target {
-            self.backdropView.alpha = layout.backdropAlphaFor(position: target)
-        } else {
+    func setBackdropAlpha(of target: FloatingPanelPosition) {
+        if target == .hidden {
            self.backdropView.alpha = 0.0
+        } else {
+            self.backdropView.alpha = layout.backdropAlphaFor(position: target)
        }
    }

-    func checkLayoutConsistance() {
+    private func checkLayoutConsistance() {
        // Verify layout configurations
-        let supportedPositions = layout.supportedPositions
-
        assert(supportedPositions.count > 0)
        assert(supportedPositions.contains(layout.initialPosition),
               "Does not include an initial potision(\(layout.initialPosition)) in supportedPositions(\(supportedPositions))")

-        supportedPositions.forEach { pos in
-            assert(layout.insetFor(position: pos) != nil,
-                   "Undefined an inset for a pos(\(pos))")
+        if layout is FloatingPanelIntrinsicLayout {
+            assert(layout.insetFor(position: .full) == nil, "Return `nil` for full position on FloatingPanelIntrinsicLayout")
        }

        if halfInset > 0 {
            assert(halfInset > tipInset, "Invalid half and tip insets")
        }
-        if fullInset > 0 {
-            assert(middleY > topY, "Invalid insets")
-            assert(bottomY > topY, "Invalid insets")
-        }
+        // The verification isn't working on orientation change(portrait -> landscape)
+        // of a floating panel in tab bar. Because the `safeAreaInsets.bottom` is
+        // updated in delay so that it can be 83.0(not 53.0) even after the surface
+        // and the super view's frame is fit to landscape already.
+        /*if fullInset > 0 {
+            assert(middleY > topY, "Invalid insets { topY: \(topY), middleY: \(middleY) }")
+            assert(bottomY > topY, "Invalid insets { topY: \(topY), bottomY: \(bottomY) }")
+         }*/
    }
 }
@@ -10,7 +10,10 @@ class FloatingPanelSurfaceContentView: UIView {}
 /// A view that presents a surface interface in a floating panel.
 public class FloatingPanelSurfaceView: UIView {

-    /// A GrabberHandleView object displayed at the top of the surface view
+    /// A GrabberHandleView object displayed at the top of the surface view.
+    ///
+    /// To use a custom grabber handle, hide this and then add the custom one
+    /// to the surface view at appropirate coordinates.
    public var grabberHandle: GrabberHandleView!

    /// The height of the grabber bar area
@@ -18,11 +21,11 @@ public class FloatingPanelSurfaceView: UIView {
        return Default.grabberTopPadding * 2 + GrabberHandleView.Default.height // 17.0
    }

-    /// A UIView object that can have the surface view added to it.
-    public var contentView: UIView!
+    /// A root view of a content view controller
+    public weak var contentView: UIView!

    private var color: UIColor? = .white { didSet { setNeedsLayout() } }
-    private var bottomOverflow: CGFloat = 0.0 // Must not call setNeedsLayout()
+    var bottomOverflow: CGFloat = 0.0 // Must not call setNeedsLayout()

    public override var backgroundColor: UIColor? {
        get { return color }
@@ -67,7 +70,7 @@ public class FloatingPanelSurfaceView: UIView {
        render()
    }

-    required init?(coder aDecoder: NSCoder) {
+    required public init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        render()
    }
@@ -80,18 +83,6 @@ public class FloatingPanelSurfaceView: UIView {
        layer.insertSublayer(backgroundLayer, at: 0)
        self.backgroundLayer = backgroundLayer

-        let contentView = FloatingPanelSurfaceContentView()
-        addSubview(contentView)
-        self.contentView = contentView as UIView
-        contentView.backgroundColor = color
-        contentView.translatesAutoresizingMaskIntoConstraints = false
-        NSLayoutConstraint.activate([
-            contentView.topAnchor.constraint(equalTo: topAnchor, constant: 0.0),
-            contentView.leftAnchor.constraint(equalTo: leftAnchor, constant: 0.0),
-            contentView.rightAnchor.constraint(equalTo: rightAnchor, constant: 0.0),
-            contentView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: 0.0),
-            ])
-
        let grabberHandle = GrabberHandleView()
        addSubview(grabberHandle)
        self.grabberHandle = grabberHandle
@@ -107,13 +98,14 @@ public class FloatingPanelSurfaceView: UIView {

    public override func layoutSubviews() {
        super.layoutSubviews()
+        log.debug("SurfaceView frame", frame)

        updateLayers()
        updateContentViewMask()

-        contentView.layer.borderColor = borderColor?.cgColor
-        contentView.layer.borderWidth = borderWidth
-        contentView.backgroundColor = color
+        contentView?.layer.borderColor = borderColor?.cgColor
+        contentView?.layer.borderWidth = borderWidth
+        contentView?.frame = bounds
    }

    private func updateLayers() {
@@ -147,29 +139,23 @@ public class FloatingPanelSurfaceView: UIView {
                                    byRoundingCorners: [.topLeft, .topRight],
                                    cornerRadii: CGSize(width: cornerRadius, height: cornerRadius))
            maskLayer.path = path.cgPath
-            contentView.layer.mask = maskLayer
+            contentView?.layer.mask = maskLayer
        } else {
            // Don't use `contentView.layer.mask` because of a UIVisualEffectView issue in iOS 10, https://forums.developer.apple.com/thread/50854
            // Instead, a user can mask the content view manually in an application.
        }
    }

-    func set(bottomOverflow: CGFloat) {
-        self.bottomOverflow = bottomOverflow
-        updateLayers()
-        updateContentViewMask()
-    }
-
-
-    func add(childView: UIView) {
-        contentView.addSubview(childView)
-        childView.frame = contentView.bounds
-        childView.translatesAutoresizingMaskIntoConstraints = false
+    func add(contentView: UIView) {
+        insertSubview(contentView, belowSubview: grabberHandle)
+        self.contentView = contentView
+        /* contentView.frame = bounds */ // MUST NOT: Because the top safe area inset of a content VC will be incorrect.
+        contentView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
-            childView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 0.0),
-            childView.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: 0.0),
-            childView.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: 0.0),
-            childView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: 0.0),
+            contentView.topAnchor.constraint(equalTo: topAnchor, constant: 0.0),
+            contentView.leftAnchor.constraint(equalTo: leftAnchor, constant: 0.0),
+            contentView.rightAnchor.constraint(equalTo: rightAnchor, constant: 0.0),
+            contentView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: 0.0),
            ])
    }
 }
@@ -0,0 +1,124 @@
+//
+//  Created by Shin Yamamoto on 2018/11/21.
+//  Copyright © 2018 Shin Yamamoto. All rights reserved.
+//
+
+import UIKit
+
+class FloatingPanelModalTransition: NSObject, UIViewControllerTransitioningDelegate {
+    func animationController(forPresented presented: UIViewController,
+                             presenting: UIViewController,
+                             source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+        return FloatingPanelModalPresentTransition()
+    }
+
+    func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+        return FloatingPanelModalDismissTransition()
+    }
+
+    func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
+        return FloatingPanelPresentationController(presentedViewController: presented, presenting: presenting)
+    }
+}
+
+class FloatingPanelPresentationController: UIPresentationController {
+    override func presentationTransitionWillBegin() {
+        // Must call here even if duplicating on in containerViewWillLayoutSubviews()
+        // Because it let the floating panel present correclty with the presentation animation
+        addFloatingPanel()
+    }
+
+    override func presentationTransitionDidEnd(_ completed: Bool) {
+        // For non-animated presentation
+        if let fpc = presentedViewController as? FloatingPanelController, fpc.position == .hidden {
+            fpc.show(animated: false, completion: nil)
+        }
+    }
+
+    override func dismissalTransitionDidEnd(_ completed: Bool) {
+        if let fpc = presentedViewController as? FloatingPanelController {
+            // For non-animated dismissal
+            if fpc.position != .hidden {
+                fpc.hide(animated: false, completion: nil)
+            }
+            fpc.view.removeFromSuperview()
+        }
+    }
+
+    override func containerViewWillLayoutSubviews() {
+        guard
+            let fpc = presentedViewController as? FloatingPanelController
+            else { fatalError() }
+
+        /*
+         * Layout the views managed by `FloatingPanelController` here for the
+         * sake of the presentation and disimissal modally from the controller.
+         */
+        addFloatingPanel()
+
+        // Forward touch events to the presenting view controller
+        (fpc.view as? FloatingPanelPassThroughView)?.eventForwardingView = presentingViewController.view
+
+        // Set tap-to-dimiss in the backdrop view
+        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleBackdrop(tapGesture:)))
+        fpc.backdropView.addGestureRecognizer(tapGesture)
+    }
+
+    @objc func handleBackdrop(tapGesture: UITapGestureRecognizer) {
+        presentedViewController.dismiss(animated: true, completion: nil)
+    }
+
+    private func addFloatingPanel() {
+        guard
+            let containerView = self.containerView,
+            let fpc = presentedViewController as? FloatingPanelController
+            else { fatalError() }
+
+        containerView.addSubview(fpc.view)
+        fpc.view.frame = containerView.bounds
+        fpc.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+    }
+}
+
+class FloatingPanelModalPresentTransition: NSObject, UIViewControllerAnimatedTransitioning {
+    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        guard
+            let fpc = transitionContext?.viewController(forKey: .to) as? FloatingPanelController
+        else { fatalError()}
+
+        let animator = fpc.behavior.addAnimator(fpc, to: fpc.layout.initialPosition)
+        return TimeInterval(animator.duration)
+    }
+
+    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        guard
+            let fpc = transitionContext.viewController(forKey: .to) as? FloatingPanelController
+        else { fatalError() }
+
+        fpc.show(animated: true) {
+            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+        }
+    }
+}
+
+class FloatingPanelModalDismissTransition: NSObject, UIViewControllerAnimatedTransitioning {
+    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        guard
+            let fpc = transitionContext?.viewController(forKey: .from) as? FloatingPanelController
+        else { fatalError()}
+
+        let animator = fpc.behavior.removeAnimator(fpc, from: fpc.position)
+        return TimeInterval(animator.duration)
+    }
+
+    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        guard
+            let fpc = transitionContext.viewController(forKey: .from) as? FloatingPanelController
+        else { fatalError() }
+
+        fpc.hide(animated: true) {
+            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+        }
+    }
+}
+
@@ -0,0 +1,19 @@
+//
+//  Created by Shin Yamamoto on 2018/11/21.
+//  Copyright © 2018 Shin Yamamoto. All rights reserved.
+//
+
+import UIKit
+
+class FloatingPanelPassThroughView: UIView {
+    public weak var eventForwardingView: UIView?
+    public override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
+        let hitView = super.hitTest(point, with: event)
+        switch hitView {
+        case self:
+            return eventForwardingView?.hitTest(self.convert(point, to: eventForwardingView), with: event)
+        default:
+            return hitView
+        }
+    }
+}
@@ -12,7 +12,7 @@ public class GrabberHandleView: UIView {
        public static let barColor = UIColor(displayP3Red: 0.76, green: 0.77, blue: 0.76, alpha: 1.0)
    }

-    required init?(coder aDecoder: NSCoder) {
+    required public init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        render()
    }
@@ -62,7 +62,19 @@ extension UIView {
    }
 }

-extension UIGestureRecognizer.State: CustomDebugStringConvertible {
+extension UIView {
+    func disableAutoLayout() {
+        let frame = self.frame
+        translatesAutoresizingMaskIntoConstraints = true
+        self.frame = frame
+    }
+    func enableAutoLayout() {
+        translatesAutoresizingMaskIntoConstraints = false
+    }
+}
+
+
+extension UIGestureRecognizerState: CustomDebugStringConvertible {
    public var debugDescription: String {
        switch self {
        case .began: return "Began"
@@ -2,6 +2,7 @@
 [![Version](https://img.shields.io/cocoapods/v/FloatingPanel.svg)](https://cocoapods.org/pods/FloatingPanel)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Platform](https://img.shields.io/cocoapods/p/FloatingPanel.svg)](https://cocoapods.org/pods/FloatingPanel)
+[![Swift 4.1](https://img.shields.io/badge/Swift-4.1-orange.svg?style=flat)](https://swift.org/)
 [![Swift 4.2](https://img.shields.io/badge/Swift-4.2-orange.svg?style=flat)](https://swift.org/)

 #  FloatingPanel
@@ -23,10 +24,15 @@ The new interface displays the related contents and utilities in parallel as a u
  - [CocoaPods](#cocoapods)
  - [Carthage](#carthage)
 - [Getting Started](#getting-started)
+  - [Add a floating panel as a child view controller](#add-a-floating-panel-as-a-child-view-controller)
+  - [Present a floating panel as a modality](#present-a-floating-panel-as-a-modality)
+- [View hierarchy](#view-hierarchy)
 - [Usage](#usage)
+  - [Show/Hide a floating panel in a view with your view hierarchy](#showhide-a-floating-panel-in-a-view-with-your-view-hierarchy)
  - [Customize the layout with `FloatingPanelLayout` protocol](#customize-the-layout-with-floatingpanellayout-protocol)
    - [Change the initial position and height](#change-the-initial-position-and-height)
    - [Support your landscape layout](#support-your-landscape-layout)
+    - [Use Intrinsic height layout](#use-intrinsic-height-layout)
  - [Customize the behavior with `FloatingPanelBehavior` protocol](#customize-the-behavior-with-floatingpanelbehavior-protocol)
    - [Modify your floating panel's interaction](#modify-your-floating-panels-interaction)
  - [Use a custom grabber handle](#use-a-custom-grabber-handle)
@@ -52,6 +58,7 @@ The new interface displays the related contents and utilities in parallel as a u
 - [x] Layout customization for all trait environments(i.e. Landscape orientation support)
 - [x] Behavior customization
 - [x] Free from common issues of Auto Layout and gesture handling
+- [x] Modal presentation

 Examples are here.

@@ -60,7 +67,7 @@ Examples are here.

 ## Requirements

-FloatingPanel is written in Swift 4.2. Compatible with iOS 10.0+
+FloatingPanel is written in Swift. It can be built by Xcode 9.4.1 or later. Compatible with iOS 10.0+.

 ## Installation

@@ -81,9 +88,10 @@ For [Carthage](https://github.com/Carthage/Carthage), add the following to your
 github "scenee/FloatingPanel"
 ```

-
 ## Getting Started

+### Add a floating panel as a child view controller
+
 ```swift
 import UIKit
 import FloatingPanel
@@ -112,15 +120,81 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
+
        // Remove the views managed by the `FloatingPanelController` object from self.view.
        fpc.removePanelFromParent()
    }
-    ...
 }
 ```

+### Present a floating panel as a modality
+
+```swift
+let fpc = FloatingPanelController()
+let contentVC = ...
+fpc.set(contentViewController: contentVC)
+
+fpc.isRemovalInteractionEnabled = true // Optional: Let it removable by a swipe-down
+
+self.present(fpc, animated: true, completion: nil)
+```
+
+You can show a floating panel over UINavigationController from the containnee view controllers as a modality of `.overCurrentContext` style.
+
+NOTE: FloatingPanelController has the custom presentation controller. If you would like to customize the presentation/dismissal, please see [FloatingPanelTransitioning](https://github.com/SCENEE/FloatingPanel/blob/feat-modality/Framework/Sources/FloatingPanelTransitioning.swift).
+
+## View hierarchy
+
+`FloatingPanelController` manages the views as the following view hierarchy.
+
+```
+FloatingPanelController.view (FloatingPanelPassThroughView)
+ ├─ .backdropView (FloatingPanelBackdropView)
+ └─ .surfaceView (FloatingPanelSurfaceView)
+          ├─ .contentView  == FloatingPanelController.contentViewController.view
+          └─ .grabberHandle (GrabberHandleView)
+```
+
 ## Usage

+### Show/Hide a floating panel in a view with your view hierarchy
+
+```swift
+// Add the controller and the managed views to a view controller.
+// From the second time, just call `show(animated:completion)`.
+view.addSubview(fpc.view)
+
+fpc.view.frame = view.bounds // MUST
+// In addition, Auto Layout constraints are highly recommended.
+// Because it makes the layout more robust on trait collection change.
+//
+//     fpc.view.translatesAutoresizingMaskIntoConstraints = false
+//     NSLayoutConstraint.activate([...])
+// 
+
+parent.addChild(fpc)
+
+// Show a floating panel to the initial position defined in your `FloatingPanelLayout` object.
+fpc.show(animated: true) {
+
+    // Only for the first time
+    self.didMove(toParent: self)
+}
+
+...
+
+// Hide it
+fpc.hide(animated: true) {
+
+    // Remove it if needed
+    self.willMove(toParent: nil)
+    self.view.removeFromSuperview()
+    self.removeFromParent()
+}
+```
+
+NOTE: `FloatingPanelController` wraps `show`/`hide` with `addPanel`/`removePanelFromParent` for easy-to-use. But `show`/`hide` are more convenience for your app.
+
 ### Customize the layout with `FloatingPanelLayout` protocol

 #### Change the initial position and height
@@ -131,7 +205,6 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {
    func floatingPanel(_ vc: FloatingPanelController, layoutFor newCollection: UITraitCollection) -> FloatingPanelLayout? {
        return MyFloatingPanelLayout()
    }
-    ...
 }

 class MyFloatingPanelLayout: FloatingPanelLayout {
@@ -144,6 +217,7 @@ class MyFloatingPanelLayout: FloatingPanelLayout {
            case .full: return 16.0 // A top inset from safe area
            case .half: return 216.0 // A bottom inset from the safe area
            case .tip: return 44.0 // A bottom inset from the safe area
+            default: return nil // Or `case .hidden: return nil`
        }
    }
 }
@@ -157,7 +231,6 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {
    func floatingPanel(_ vc: FloatingPanelController, layoutFor newCollection: UITraitCollection) -> FloatingPanelLayout? {
        return (newCollection.verticalSizeClass == .compact) ? FloatingPanelLandscapeLayout() : nil // Returning nil indicates to use the default layout
    }
-    ...
 }

 class FloatingPanelLandscapeLayout: FloatingPanelLayout {
@@ -185,6 +258,33 @@ class FloatingPanelLandscapeLayout: FloatingPanelLayout {
 }
 ```

+#### Use Intrinsic height layout
+
+1. Lay out your content View with the intrinsic height size. For example, see "Detail View Controller scene"/"Intrinsic View Controller scene" of [Main.storyboard](https://github.com/SCENEE/FloatingPanel/blob/master/Examples/Samples/Sources/Base.lproj/Main.storyboard). The 'Stack View.bottom' constraint determines the intrinsic height.
+2. Create a layout that adopts and conforms to `FloatingPanelIntrinsicLayout` and use it.
+
+```swift
+class ViewController: UIViewController, FloatingPanelControllerDelegate {
+    ...
+    func floatingPanel(_ vc: FloatingPanelController, layoutFor newCollection: UITraitCollection) -> FloatingPanelLayout? {
+        return RemovablePanelLayout()
+    }
+}
+
+class RemovablePanelLayout: FloatingPanelIntrinsicLayout {
+    var supportedPositions: Set<FloatingPanelPosition> {
+        return [.full, .half]
+    }
+    func insetFor(position: FloatingPanelPosition) -> CGFloat? {
+        switch position {
+        case .half: return 130.0
+        default: return nil  // Must return nil for .full
+        }
+    }
+    ...
+}
+```
+
 ### Customize the behavior with `FloatingPanelBehavior` protocol

 #### Modify your floating panel's interaction
@@ -195,90 +295,67 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {
    func floatingPanel(_ vc: FloatingPanelController, behaviorFor newCollection: UITraitCollection) -> FloatingPanelBehavior? {
        return FloatingPanelStocksBehavior()
    }
-    ...
 }
-...

 class FloatingPanelStocksBehavior: FloatingPanelBehavior {
-    var velocityThreshold: CGFloat {
-        return 15.0
-    }
-
+    ...
    func interactionAnimator(_ fpc: FloatingPanelController, to targetPosition: FloatingPanelPosition, with velocity: CGVector) -> UIViewPropertyAnimator {
        let damping = self.damping(with: velocity)
        let springTiming = UISpringTimingParameters(dampingRatio: damping, initialVelocity: velocity)
        return UIViewPropertyAnimator(duration: 0.5, timingParameters: springTiming)
    }
-    ...
 }
 ```

 ### Use a custom grabber handle

 ```swift
-class ViewController: UIViewController {
-    ...
-    override func viewDidLoad() {
-        ...
-        let myGrabberHandleView = MyGrabberHandleView()
-        fpc.surfaceView.grabberHandle.isHidden = true
-        fpc.surfaceView.addSubview(myGrabberHandleView)
-    }
-    ...
-}
+let myGrabberHandleView = MyGrabberHandleView()
+fpc.surfaceView.grabberHandle.isHidden = true
+fpc.surfaceView.addSubview(myGrabberHandleView)
 ```

 ### Add tap gestures to the surface or backdrop views

 ```swift
-class ViewController: UIViewController, FloatingPanelControllerDelegate {
+override func viewDidLoad() {
    ...
-    override func viewDidLoad() {
-        ...
-        surfaceTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleSurface(tapGesture:)))
-        fpc.surfaceView.addGestureRecognizer(surfaceTapGesture)
+    surfaceTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleSurface(tapGesture:)))
+    fpc.surfaceView.addGestureRecognizer(surfaceTapGesture)

-        backdropTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleBackdrop(tapGesture:)))
-        fpc.backdropView.addGestureRecognizer(backdropTapGesture)
+    backdropTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleBackdrop(tapGesture:)))
+    fpc.backdropView.addGestureRecognizer(backdropTapGesture)

-        surfaceTapGesture.isEnabled = (fpc.position == .tip)
-        ...
-    }
-    ...
-    // Enable `surfaceTapGesture` only at `tip` position
-    func floatingPanelDidChangePosition(_ vc: FloatingPanelController) {
-        surfaceTapGesture.isEnabled = (vc.position == .tip)
-    }
+    surfaceTapGesture.isEnabled = (fpc.position == .tip)
+}
+
+// Enable `surfaceTapGesture` only at `tip` position
+func floatingPanelDidChangePosition(_ vc: FloatingPanelController) {
+    surfaceTapGesture.isEnabled = (vc.position == .tip)
 }
 ```

 ### Create an additional floating panel for a detail

 ```swift
-class ViewController: UIViewController, FloatingPanelControllerDelegate {
-    var searchPanelVC: FloatingPanelController!
-    var detailPanelVC: FloatingPanelController!
+override func viewDidLoad() {
+    // Setup Search panel
+    self.searchPanelVC = FloatingPanelController()

-    override func viewDidLoad() {
-        // Setup Search panel
-        self.searchPanelVC = FloatingPanelController()
+    let searchVC = SearchViewController()
+    self.searchPanelVC.set(contentViewController: searchVC)
+    self.searchPanelVC.track(scrollView: contentVC.tableView)

-        let searchVC = SearchViewController()
-        self.searchPanelVC.set(contentViewController: searchVC)
-        self.searchPanelVC.track(scrollView: contentVC.tableView)
+    self.searchPanelVC.addPanel(toParent: self)

-        self.searchPanelVC.addPanel(toParent: self)
+    // Setup Detail panel
+    self.detailPanelVC = FloatingPanelController()

-        // Setup Detail panel
-        self.detailPanelVC = FloatingPanelController()
+    let contentVC = ContentViewController()
+    self.detailPanelVC.set(contentViewController: contentVC)
+    self.detailPanelVC.track(scrollView: contentVC.scrollView)

-        let contentVC = ContentViewController()
-        self.detailPanelVC.set(contentViewController: contentVC)
-        self.detailPanelVC.track(scrollView: contentVC.scrollView)
-
-        self.detailPanelVC.addPanel(toParent: self)
-    }
-    ...
+    self.detailPanelVC.addPanel(toParent: self)
 }
 ```

@@ -287,15 +364,15 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {
 In the following example, I move a floating panel to full or half position while opening or closing a search bar like Apple Maps.

 ```swift
-    func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
-        ...
-        fpc.move(to: .half, animated: true)
-    }
+func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
+    ...
+    fpc.move(to: .half, animated: true)
+}

-    func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
-        ...
-        fpc.move(to: .full, animated: true)
-    }
+func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
+    ...
+    fpc.move(to: .full, animated: true)
+}
 ```

 ### Work your contents together with a floating panel behavior
@@ -315,7 +392,6 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {
            searchVC.hideHeader()
        }
    }
-    ...
 }
 ```

@@ -323,7 +399,7 @@ class ViewController: UIViewController, FloatingPanelControllerDelegate {

 ### 'Show' or 'Show Detail' Segues from `FloatingPanelController`'s content view controller

-'Show' or 'Show Detail' segues from a content view controller will be managed by a view controller(hereinafter called 'master VC') adding a floating panel. Because a floating panel is just a subview of the master VC.
+'Show' or 'Show Detail' segues from a content view controller will be managed by a view controller(hereinafter called 'master VC') adding a floating panel. Because a floating panel is just a subview of the master VC(except for modality).

 `FloatingPanelController` has no way to manage a stack of view controllers like `UINavigationController`. If so, it would be so complicated and the interface will become `UINavigationController`. This component should not have the responsibility to manage the stack.

@@ -346,17 +422,16 @@ class ViewController: UIViewController {

        secondFpc.addPanel(toParent: self)
    }
-    ...
 }
 ```

-A `FloatingPanelController` object proxies an action for `show(_:sender)` to the master VC. That's why the master VC can handle a destination view controller of a 'Show' or 'Show Detail' segue and you can hook `show(_:sender)` to show a secondally floating panel set the destination view controller to the content.
+A `FloatingPanelController` object proxies an action for `show(_:sender)` to the master VC. That's why the master VC can handle a destination view controller of a 'Show' or 'Show Detail' segue and you can hook `show(_:sender)` to show a secondary floating panel set the destination view controller to the content.

 It's a great way to decouple between a floating panel and the content VC.

 ### FloatingPanelSurfaceView's issue on iOS 10

-* On iOS 10,   `FloatingPanelSurfaceView.cornerRadius` isn't not automatically masked with the top rounded corners  because of UIVisualEffectView issue. See https://forums.developer.apple.com/thread/50854. 
+* On iOS 10, `FloatingPanelSurfaceView.cornerRadius` isn't not automatically masked with the top rounded corners  because of `UIVisualEffectView` issue. See https://forums.developer.apple.com/thread/50854. 
 So you need to draw top rounding corners of your content.  Here is an example in Examples/Maps.
 ```swift
 override func viewDidLayoutSubviews() {
@@ -367,11 +442,11 @@ override func viewDidLayoutSubviews() {
    }
 }
 ```
-* If you sets clear color to `FloatingPanelSurfaceView.backgroundColor`, please note the bottom overflow of your content on bouncing at full position. To prevent it, you need to expand your content. For example, See Example/Maps's Auto Layout settings of UIVisualEffectView in Main.storyborad.
+* If you sets clear color to `FloatingPanelSurfaceView.backgroundColor`, please note the bottom overflow of your content on bouncing at full position. To prevent it, you need to expand your content. For example, See Example/Maps App's Auto Layout settings of `UIVisualEffectView` in Main.storyboard.

 ## Author

-Shin Yamamoto <shin@scenee.com>
+Shin Yamamoto <shin@scenee.com> | [@scenee](https://twitter.com/scenee)

 ## License
Author	SHA1	Message	Date
Shin Yamamoto	7d668c8525	Release v1.3.3	2019-02-02 11:38:37 +09:00
Shin Yamamoto	ebd4a32bfc	Merge pull request #123 from SCENEE/fix-cut-off-by-mask Expand the surface mask's height	2019-02-02 11:37:20 +09:00
Shin Yamamoto	6aa739231d	Expand the surface mask's height `FloatingPanelSurfaceView.updateContentViewMask()` causes a content to be cut off.	2019-02-01 10:19:51 +09:00
Shin Yamamoto	8877d32ced	Merge pull request #122 from SCENEE/fix-animated-presentation-modally Fix the presentation modally when fpc is reused	2019-01-31 19:22:46 +09:00
Shin Yamamoto	7f025ae845	Remove the unnecessary code to fix the presentation modally It's added at `a095ace` commit, but now not needed by the previous commit.	2019-01-31 12:48:36 +09:00
Shin Yamamoto	1b2dae2135	Fix presentation modally when fpc is reused	2019-01-30 13:09:04 +09:00
Shin Yamamoto	6e4e9df616	Merge pull request #114 from datwelk/hotfix/restore-scroll-view-delegate Restore original scroll view delegate when updating content VC	2019-01-28 19:11:39 +09:00
Damiaan Twelker	49e868a505	restore original scroll view delegate when updating content viewcontroller	2019-01-26 12:41:17 +01:00
Shin Yamamoto	f1b70e0367	Add the issue template	2019-01-25 22:08:44 +09:00
Shin Yamamoto	1d0e747578	Update README.md	2019-01-24 11:00:45 +09:00
Shin Yamamoto	2c72d07cab	Merge pull request #97 from SCENEE/support-full-screen Support full screen layout	2019-01-19 16:41:32 +09:00
Shin Yamamoto	31c057f9f8	Fix typo	2019-01-19 14:53:36 +09:00
Shin Yamamoto	d3033df9da	Add FloatingPanelFullScreenLayout doc comment	2019-01-19 14:51:04 +09:00
Shin Yamamoto	459d82b1c6	Update 'Show Tab Bar' for full screen layout	2019-01-19 14:06:23 +09:00
Shin Yamamoto	85d7ca640e	Stop manipulating a scroll content inset for FloatingPanelFullScreenLayout It's better that the manipulation should be operated in a user application code.	2019-01-19 14:06:23 +09:00
Shin Yamamoto	c1b7f2f092	Merge pull request #106 from SCENEE/release-1.3.2 Release v1.3.2	2019-01-18 09:31:28 +09:00
Shin Yamamoto	b7a7e0d4ad	Release v1.3.2	2019-01-17 10:47:45 +09:00
Shin Yamamoto	dc7f6d58f9	Fix the swift version in podspec	2019-01-17 10:47:45 +09:00
Shin Yamamoto	a2a10bd0d3	Merge pull request #104 from SCENEE/fix-modal-presentation Fix the modal presentation	2019-01-15 09:31:39 +09:00
Shin Yamamoto	b54c8ee6ee	Merge pull request #105 from CedricGatay/fix/delegateIgnored fix(delegateIgnored): Allow to set delegate on init	2019-01-14 19:43:39 +09:00
Cedric Gatay	08d275690a	fix(delegateIgnored): fix for animation use case Do not force update layout to allow the user to animate the change later on.	2019-01-14 11:05:50 +01:00
Cedric Gatay	1c307f751e	fix(delegateIgnored): listen on delegate change Properly listens for delegate changes and trigger behavior / layout changes accordingly. Made constructor parameter name explicit.	2019-01-14 08:49:23 +01:00
Cedric Gatay	6f06a0f7fc	fix(delegateIgnored): Allow to set delegate on init Typical use case is : ``` let floatingVC = FloatingPanelController() floatingVC.delegate = self ``` This PR allows to set the delegate straight away by using `let floatingVC = FloatingPanelController(self)` Its true reason is that the setup code that fetches behavior / layout through delegate is called without the delegate being set is useless on `init`ing. Another implementation could be observing the `didSet` event on delegate to do the `setUp` for `FloatingPanel`	2019-01-12 15:15:48 +01:00
Shin Yamamoto	a095ace30e	Fix the modal presentation	2019-01-11 19:04:39 +09:00
Shin Yamamoto	a486f61f5f	Merge pull request #102 from SCENEE/fix-secound-touch-crash Fix a crash on tap dismissal with a second touch	2019-01-10 09:38:06 +09:00
Shin Yamamoto	14e0abc240	Merge pull request #103 from SCENEE/fix-unsatisfiable-constraints-error Fix unsatisfiable constraints error for safe area bottom on full state	2019-01-10 09:37:46 +09:00
Shin Yamamoto	32203c48bd	Fix unsatisfiable constraints error for safe area bottom on full state	2019-01-10 09:05:17 +09:00
Shin Yamamoto	9d6024f603	Fix a crash on tap dismissal with a second touch For example, a user tap the backdrop view to dismiss it while dragging the surface view on presentation modally.	2019-01-10 08:43:46 +09:00
Shin Yamamoto	a4dd4e48e7	Merge pull request #98 from SCENEE/support-swift4.1 Support Swift 4.1	2019-01-10 08:25:50 +09:00
Shin Yamamoto	e6f7456a0f	Merge pull request #101 from SCENEE/fix-touch-handling-on-presentation-modally Fix the event handling on presentation modally	2019-01-10 08:25:26 +09:00
Shin Yamamoto	fca79c9b0c	Fix the event handling on presentation modally If an alpha of the controller's backdrop view is zero, the presentation controller must not block any touch event outside of surface view.	2019-01-09 09:32:17 +09:00
Shin Yamamoto	4ad7f11e93	Support Swift 4.1	2019-01-05 21:44:05 +09:00
Shin Yamamoto	0412bdc996	Support full screen layout	2019-01-05 12:26:49 +09:00
Shin Yamamoto	31faeaada3	Merge pull request #93 from SCENEE/release-1.3.1 Release v1.3.1	2018-12-30 09:52:25 +09:00
Shin Yamamoto	72539ca973	Release v1.3.1	2018-12-30 09:22:33 +09:00
Shin Yamamoto	ef94630aa1	Update README	2018-12-30 09:22:33 +09:00
Shin Yamamoto	cb696f9992	Merge pull request #86 from SCENEE/improve-samples-app Fix layout bugs on v1.3.0	2018-12-29 14:33:13 +09:00
Shin Yamamoto	aa23e404e1	Fix a content offset of a tracking scroll view This bug only happens on 'Shoe Tab Bar' in Samples app on landscape orientation.	2018-12-28 16:08:10 +09:00
Shin Yamamoto	4c0749640f	Remove an unnecessary comment	2018-12-28 15:13:59 +09:00
Shin Yamamoto	ee5661f304	Fix UI freezes on presentation modally from the second time	2018-12-28 15:13:59 +09:00
Shin Yamamoto	ddefdc4f34	Fix crash when content view is nil	2018-12-28 15:13:59 +09:00
Shin Yamamoto	f2a0af1646	Fix intrinsic height	2018-12-28 15:13:59 +09:00
Shin Yamamoto	7ded61c2bc	No longer need traitCollectionDidChange(_:)	2018-12-28 15:13:59 +09:00
Shin Yamamoto	08aabcf6dd	Fix bugs on iOS 10	2018-12-28 15:13:59 +09:00
Shin Yamamoto	e19af7e67d	Set up the height constraints with the root view's heightAnchor * `vc.view.bounds.height` causes some layout problems. This change makes a content view layout more robust. * Enable to configure the content-hugging and compression-resistance	2018-12-28 15:13:59 +09:00
Shin Yamamoto	62aa07e28e	Refactor layout logic - Update README - Remove FloatingPanelSurfaceWrapperView - Remove content wrapper view of FloatingPanelSurfaceView - Remove {setUp,tearDown}Views in FloatingPanel - Modify timing to call FloatingPanelLayoutAdapter.checkLayoutConsistance() - Fix invalid surface height on orientation change - Fix a layout problem on SafeArea.Top - Fix invalid top inset of safe area on a navigation bar with search bar - Fix content offsets of a tracking scroll view - Fix the content offsets on orientation change(Regression) - Fix FloatingPanelPresentationController - Fix intrinsic height handling - Reduce re-rendering the surface view unexpectedly	2018-12-28 15:13:59 +09:00
Shin Yamamoto	03b0bf747e	Improve Sample apps for debugging - Add InspectableViewController - Add version label in Samples app	2018-12-28 15:13:59 +09:00
Shin Yamamoto	8dc75aed55	Always disable Auto Layout for Safe area bottom	2018-12-28 15:13:59 +09:00
Shin Yamamoto	d5f5e99010	Fix dismiss swizzling	2018-12-28 15:13:59 +09:00
Shin Yamamoto	18c46d191e	Fix panel is duplicated on orientation change	2018-12-28 15:13:59 +09:00
Shin Yamamoto	e9f92430b2	Add a disable tracking sample to edit a table view	2018-12-28 15:13:59 +09:00
Shin Yamamoto	3106865449	Add SettingsViewController in Samples App	2018-12-28 15:13:44 +09:00
Shin Yamamoto	375e7a59e2	Merge pull request #89 from SCENEE/fix-failure-requirements Fix failure requirements	2018-12-28 12:59:37 +09:00
Shin Yamamoto	bc4a2def42	Add FloatingPanelControllerDelegate.floatingPanel(_:shouldRecognizeSimultaneouslyWith:)	2018-12-20 11:20:22 +09:00
Shin Yamamoto	8204a6cf27	Any gestures don't wait for the pan gesture	2018-12-18 21:43:18 +09:00
Shin Yamamoto	797292dbe5	Merge pull request #85 from SCENEE/release-1.3.0 Release v1.3.0(conflicts resolved )	2018-12-15 09:32:16 +09:00
Shin Yamamoto	6e7a33b3a1	Merge branch 'next' into release-1.3.0	2018-12-15 08:55:39 +09:00
Shin Yamamoto	2bfea00c72	Release v1.3.0	2018-12-15 08:48:00 +09:00
Shin Yamamoto	81441a724b	Fix a crash in checkLayoutConsistance() The crash happened on orientation change from landscape to portrait in "Show Tab Bar" scene.	2018-12-12 11:47:02 +09:00
Shin Yamamoto	82c8d8dd9a	Fix the boundary condition for top/bottom buffers	2018-12-12 09:59:19 +09:00
Shin Yamamoto	8751a9fe53	Fix the broken landscape layout	2018-12-12 09:59:19 +09:00
Shin Yamamoto	9cf561fcf1	Update README	2018-12-12 09:59:19 +09:00
Shin Yamamoto	332559c67d	Update Samples - Make "Show Intrinsic View" panel dismissable - Add tap-to-hide sample	2018-12-12 09:59:19 +09:00
Shin Yamamoto	56557f0092	Merge pull request #81 from SCENEE/release-1.2.3 Release v1.2.3	2018-12-07 19:10:14 +09:00
Shin Yamamoto	1e6cb7b1ad	Release v1.2.3	2018-12-07 16:50:08 +09:00
Shin Yamamoto	7f419b7e78	Merge pull request #79 from SCENEE/improve-intrinsic-height Improve intrinsic height	2018-12-07 16:23:07 +09:00
Shin Yamamoto	973a90e071	Update README	2018-12-07 15:31:59 +09:00
Shin Yamamoto	66a8ca36e4	Fix FloatingPanelIntrinsicLayout - `.full` position's height must be the intrinsic height. - Work it for a safe area bottom anchor - Remove FloatingPanelIntrinsicLayout.contentViewController because it isn't actually needed	2018-12-07 14:37:48 +09:00
Shin Yamamoto	3715007156	Merge pull request #63 from SCENEE/feat-modality FloatingPanelController as a Modality	2018-12-07 14:36:43 +09:00
Shin Yamamoto	5158685c02	Update README - Show/Hide usage - Modality usage	2018-12-07 13:25:17 +09:00
Shin Yamamoto	61d3371ea5	Fix a bug in Samples app	2018-12-06 09:11:25 +09:00
Shin Yamamoto	0491507e67	Build 'next' branch on Travis CI	2018-12-06 09:11:25 +09:00
Shin Yamamoto	fcd4ad874a	Use autoresizing masks instead of Auto Layout constraints	2018-12-06 09:11:25 +09:00
Shin Yamamoto	e2668fcdf2	Fix the condition of removal interaction	2018-12-06 09:11:25 +09:00
Shin Yamamoto	f3ac2b2cec	Add the modal dismissal on backdrop tap	2018-12-06 09:11:25 +09:00
Shin Yamamoto	8b84391e36	Fix FloatingPanelModalTransitioning	2018-12-06 09:11:25 +09:00
Shin Yamamoto	1b3ca347f5	Update comment of FloatingPanelSurfaceView.grabberHandle	2018-12-06 09:11:25 +09:00
Shin Yamamoto	2dced7bfbf	Improve FloatingPanelController implementation	2018-12-06 09:11:25 +09:00
Shin Yamamoto	8ba4ce36a1	Merge pull request #75 from SCENEE/fix-animation-wobbling The default interaction animator should be uninterruptible	2018-12-05 16:01:56 +09:00
Shin Yamamoto	cf60b09225	Fix invalid backdrop alpha The bug was found when I commented out `animator.startAnimation()`.	2018-12-05 14:08:31 +09:00
Shin Yamamoto	427ec45d42	Let the default interaction animator be uninterruptible Because an interruptible animator causes a wobbling at the animation start. when a user flick a panel quickly to move to full position nearby the position.	2018-12-05 13:56:43 +09:00
Shin Yamamoto	ac9f8fe89c	Update Samples App for .hidden	2018-12-04 22:25:22 +09:00
Shin Yamamoto	6817990555	Add .hidden position	2018-12-04 22:25:22 +09:00
Shin Yamamoto	d395cde316	Fix a backdrop's cut off on orientation change	2018-12-04 22:25:22 +09:00
Shin Yamamoto	20272eccb8	Add FloatingPanelTransitioning to present as Modality	2018-12-04 22:25:22 +09:00
Shin Yamamoto	091ae8abff	Add 'Show Floating Panel Modal' in Samples app	2018-12-04 22:25:22 +09:00
Shin Yamamoto	6e87690649	FloatingPanelController as a Modality * Change a floating panel view hierarchy * Add FloatingPanelController.{show,hide}(animated:completion)	2018-12-04 22:24:26 +09:00
Shin Yamamoto	d5a1bd3859	Update Samples App to use dismiss(animated:completion)	2018-12-04 22:21:50 +09:00
Shin Yamamoto	a1e4643a25	Swizzling UIViewController.dismiss(animated:completion) for a content VC	2018-12-04 22:21:50 +09:00
Shin Yamamoto	71c0450614	Merge pull request #74 from SCENEE/feat-intrinsic-height Feat intrinsic height	2018-12-04 22:20:45 +09:00
Shin Yamamoto	d469caad69	Fix unexpected assertion failure	2018-12-04 08:19:41 +09:00
Derek Schade	5cc3d4fbfb	Enabled inset checks again	2018-12-04 08:14:46 +09:00
Derek Schade	a8691ee3a5	Update layout when layout is intrinsiclayout	2018-12-04 08:14:46 +09:00
Derek Schade	91d7941921	Add IntrinsicPanelLayout	2018-12-04 08:14:46 +09:00
Derek Schade	0bc7a0953e	Intrinsic layout protocol	2018-12-04 08:14:46 +09:00
Derek Schade	c60bea5952	add intrinsic viewcontroller to storyboard	2018-12-04 08:14:46 +09:00
Shin Yamamoto	4db648ad25	Merge pull request #72 from SCENEE/release-v1.2.2 Release v1.2.2	2018-12-03 12:27:47 +09:00