Added swift version to podspec file

Updated Swift podspec to use separate tag from ObjC releases
Updated README.md to include information about Swift version
2019-11-08 21:59:16 -08:00 · 2019-11-08 21:54:31 -08:00 · 2019-11-08 21:51:27 -08:00 · 2019-11-08 21:41:14 -08:00 · 2019-11-04 21:54:00 -08:00 · 2019-10-19 15:37:05 -07:00
46 changed files with 2703 additions and 765 deletions
@@ -1,9 +1,12 @@
-osx_image: xcode8.3
+osx_image: xcode11.2
 language: objective-c
-cache: cocoapods
 podfile: Example/Podfile
 before_install:
 - pod install --project-directory=Example
+xcode_workspace: Example/ScaledCenterCarousel.xcworkspace
+xcode_scheme: ScaledCenterCarousel-Example
+xcode_destination: platform=iOS Simulator,OS=13.2,name=iPhone 11
+xcode_sdk: iphonesimulator13.2
 script:
- set -o pipefail && xcodebuild test -workspace Example/ScaledCenterCarousel.xcworkspace -scheme ScaledCenterCarousel-Example -sdk iphonesimulator10.3 ONLY_ACTIVE_ARCH=NO | xcpretty
+- set -o pipefail && xcodebuild test -workspace Example/ScaledCenterCarousel.xcworkspace -scheme ScaledCenterCarousel-Example -sdk iphonesimulator13.2 ONLY_ACTIVE_ARCH=NO -destination 'platform=iOS Simulator,OS=13.2,name=iPhone 11' | xcpretty
 - pod lib lint
@@ -1,5 +1,7 @@
 use_frameworks!

+platform :ios, '8.3'
+
 target 'ScaledCenterCarousel_Example' do
  pod 'ScaledCenterCarousel', :path => '../'

@@ -1,6 +1,6 @@
 PODS:
  - Expecta (1.0.5)
-  - ScaledCenterCarousel (0.1.0)
+  - ScaledCenterCarousel (1.0.1)
  - Specta (1.0.6)

 DEPENDENCIES:
@@ -8,15 +8,20 @@ DEPENDENCIES:
  - ScaledCenterCarousel (from `../`)
  - Specta

+SPEC REPOS:
+  https://github.com/cocoapods/specs.git:
+    - Expecta
+    - Specta
+
 EXTERNAL SOURCES:
  ScaledCenterCarousel:
-    :path: ../
+    :path: "../"

 SPEC CHECKSUMS:
  Expecta: e1c022fcd33910b6be89c291d2775b3fe27a89fe
-  ScaledCenterCarousel: 56f8aedda75dfeae260f5360c3e3ed27be67c58e
+  ScaledCenterCarousel: f55d4357dc086f64a39a6f6cc1a489d0ea310d55
  Specta: f506f3a8361de16bc0dcf3b17b75e269072ba465

-PODFILE CHECKSUM: 60029080b9aadec4da8c5b6712e2e396e9549830
+PODFILE CHECKSUM: 32d7b0120b7156068dea7567c1a9aadd000320cb

-COCOAPODS: 1.2.0
+COCOAPODS: 1.5.3
@@ -1,9 +1,10 @@
 {
  "name": "ScaledCenterCarousel",
-  "version": "0.1.0",
+  "version": "1.0.1",
  "summary": "A carousel-based layout for UICollectionView with scaled center item.",
  "description": "A carousel-based layout for UICollectionView with scaled center item. \nIt also contains paginator to force user to select single item which will be presented exaclty at center of carousel.",
  "homepage": "https://github.com/yuriy-tolstoguzov/ScaledCenterCarousel",
+  "screenshots": "https://raw.githubusercontent.com/yuriy-tolstoguzov/ScaledCenterCarousel/master/Example/Assets/ScaledCenterCarousel.gif",
  "license": {
    "type": "MIT",
    "file": "LICENSE"
@@ -13,8 +14,9 @@
  },
  "source": {
    "git": "https://github.com/yuriy-tolstoguzov/ScaledCenterCarousel.git",
-    "tag": "0.1.0"
+    "tag": "1.0.1"
  },
+  "social_media_url": "https://twitter.com/ImOssir",
  "platforms": {
    "ios": "8.0"
  },
@@ -1,6 +1,6 @@
 PODS:
  - Expecta (1.0.5)
-  - ScaledCenterCarousel (0.1.0)
+  - ScaledCenterCarousel (1.0.1)
  - Specta (1.0.6)

 DEPENDENCIES:
@@ -8,15 +8,20 @@ DEPENDENCIES:
  - ScaledCenterCarousel (from `../`)
  - Specta

+SPEC REPOS:
+  https://github.com/cocoapods/specs.git:
+    - Expecta
+    - Specta
+
 EXTERNAL SOURCES:
  ScaledCenterCarousel:
-    :path: ../
+    :path: "../"

 SPEC CHECKSUMS:
  Expecta: e1c022fcd33910b6be89c291d2775b3fe27a89fe
-  ScaledCenterCarousel: 56f8aedda75dfeae260f5360c3e3ed27be67c58e
+  ScaledCenterCarousel: f55d4357dc086f64a39a6f6cc1a489d0ea310d55
  Specta: f506f3a8361de16bc0dcf3b17b75e269072ba465

-PODFILE CHECKSUM: 60029080b9aadec4da8c5b6712e2e396e9549830
+PODFILE CHECKSUM: 32d7b0120b7156068dea7567c1a9aadd000320cb

-COCOAPODS: 1.2.0
+COCOAPODS: 1.5.3
@@ -1,11 +1,10 @@
-CONFIGURATION_BUILD_DIR = $PODS_CONFIGURATION_BUILD_DIR/Expecta
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/Expecta
 ENABLE_BITCODE = NO
 FRAMEWORK_SEARCH_PATHS = $(inherited)  "$(PLATFORM_DIR)/Developer/Library/Frameworks"
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
-HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Public"
 OTHER_LDFLAGS = -framework "Foundation" -framework "XCTest"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
 PODS_ROOT = ${SRCROOT}
 PODS_TARGET_SRCROOT = ${PODS_ROOT}/Expecta
 PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
@@ -1,11 +1,28 @@
 #!/bin/sh
 set -e
+set -u
+set -o pipefail
+
+if [ -z ${FRAMEWORKS_FOLDER_PATH+x} ]; then
+    # If FRAMEWORKS_FOLDER_PATH is not set, then there's nowhere for us to copy
+    # frameworks to, so exit 0 (signalling the script phase was successful).
+    exit 0
+fi

 echo "mkdir -p ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
 mkdir -p "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"

+COCOAPODS_PARALLEL_CODE_SIGN="${COCOAPODS_PARALLEL_CODE_SIGN:-false}"
 SWIFT_STDLIB_PATH="${DT_TOOLCHAIN_DIR}/usr/lib/swift/${PLATFORM_NAME}"

+# Used as a return value for each invocation of `strip_invalid_archs` function.
+STRIP_BINARY_RETVAL=0
+
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+# Copies and strips a vendored framework
 install_framework()
 {
  if [ -r "${BUILT_PRODUCTS_DIR}/$1" ]; then
@@ -23,9 +40,9 @@ install_framework()
      source="$(readlink "${source}")"
  fi

-  # use filter instead of exclude so missing patterns dont' throw errors
-  echo "rsync -av --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
-  rsync -av --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
+  # Use filter instead of exclude so missing patterns don't throw errors.
+  echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
+  rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"

  local basename
  basename="$(basename -s .framework "$1")"
@@ -54,12 +71,40 @@ install_framework()
  fi
 }

+# Copies and strips a vendored dSYM
+install_dsym() {
+  local source="$1"
+  if [ -r "$source" ]; then
+    # Copy the dSYM into a the targets temp dir.
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${DERIVED_FILES_DIR}\""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DERIVED_FILES_DIR}"
+
+    local basename
+    basename="$(basename -s .framework.dSYM "$source")"
+    binary="${DERIVED_FILES_DIR}/${basename}.framework.dSYM/Contents/Resources/DWARF/${basename}"
+
+    # Strip invalid architectures so "fat" simulator / device frameworks work on device
+    if [[ "$(file "$binary")" == *"Mach-O dSYM companion"* ]]; then
+      strip_invalid_archs "$binary"
+    fi
+
+    if [[ $STRIP_BINARY_RETVAL == 1 ]]; then
+      # Move the stripped file into its final destination.
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${DERIVED_FILES_DIR}/${basename}.framework.dSYM\" \"${DWARF_DSYM_FOLDER_PATH}\""
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${DERIVED_FILES_DIR}/${basename}.framework.dSYM" "${DWARF_DSYM_FOLDER_PATH}"
+    else
+      # The dSYM was not stripped at all, in this case touch a fake folder so the input/output paths from Xcode do not reexecute this script because the file is missing.
+      touch "${DWARF_DSYM_FOLDER_PATH}/${basename}.framework.dSYM"
+    fi
+  fi
+}
+
 # Signs a framework with the provided identity
 code_sign_if_enabled() {
-  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY}" -a "${CODE_SIGNING_REQUIRED}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
+  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY}" -a "${CODE_SIGNING_REQUIRED:-}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
    # Use the current code_sign_identitiy
    echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
-    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements '$1'"
+    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS:-} --preserve-metadata=identifier,entitlements '$1'"

    if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
      code_sign_cmd="$code_sign_cmd &"
@@ -72,11 +117,19 @@ code_sign_if_enabled() {
 # Strip invalid architectures
 strip_invalid_archs() {
  binary="$1"
-  # Get architectures for current file
-  archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | rev)"
+  # Get architectures for current target binary
+  binary_archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | awk '{$1=$1;print}' | rev)"
+  # Intersect them with the architectures we are building for
+  intersected_archs="$(echo ${ARCHS[@]} ${binary_archs[@]} | tr ' ' '\n' | sort | uniq -d)"
+  # If there are no archs supported by this binary then warn the user
+  if [[ -z "$intersected_archs" ]]; then
+    echo "warning: [CP] Vendored binary '$binary' contains architectures ($binary_archs) none of which match the current build architectures ($ARCHS)."
+    STRIP_BINARY_RETVAL=0
+    return
+  fi
  stripped=""
-  for arch in $archs; do
-    if ! [[ "${VALID_ARCHS}" == *"$arch"* ]]; then
+  for arch in $binary_archs; do
+    if ! [[ "${ARCHS}" == *"$arch"* ]]; then
      # Strip non-valid architectures in-place
      lipo -remove "$arch" -output "$binary" "$binary" || exit 1
      stripped="$stripped $arch"
@@ -85,14 +138,15 @@ strip_invalid_archs() {
  if [[ "$stripped" ]]; then
    echo "Stripped $binary of architectures:$stripped"
  fi
+  STRIP_BINARY_RETVAL=1
 }


 if [[ "$CONFIGURATION" == "Debug" ]]; then
-  install_framework "$BUILT_PRODUCTS_DIR/ScaledCenterCarousel/ScaledCenterCarousel.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework"
 fi
 if [[ "$CONFIGURATION" == "Release" ]]; then
-  install_framework "$BUILT_PRODUCTS_DIR/ScaledCenterCarousel/ScaledCenterCarousel.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework"
 fi
 if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
  wait
@@ -1,5 +1,13 @@
 #!/bin/sh
 set -e
+set -u
+set -o pipefail
+
+if [ -z ${UNLOCALIZED_RESOURCES_FOLDER_PATH+x} ]; then
+    # If UNLOCALIZED_RESOURCES_FOLDER_PATH is not set, then there's nowhere for us to copy
+    # resources to, so exit 0 (signalling the script phase was successful).
+    exit 0
+fi

 mkdir -p "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"

@@ -8,7 +16,11 @@ RESOURCES_TO_COPY=${PODS_ROOT}/resources-to-copy-${TARGETNAME}.txt

 XCASSET_FILES=()

-case "${TARGETED_DEVICE_FAMILY}" in
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+case "${TARGETED_DEVICE_FAMILY:-}" in
  1,2)
    TARGET_DEVICE_ARGS="--target-device ipad --target-device iphone"
    ;;
@@ -21,6 +33,9 @@ case "${TARGETED_DEVICE_FAMILY}" in
  3)
    TARGET_DEVICE_ARGS="--target-device tv"
    ;;
+  4)
+    TARGET_DEVICE_ARGS="--target-device watch"
+    ;;
  *)
    TARGET_DEVICE_ARGS="--target-device mac"
    ;;
@@ -41,29 +56,29 @@ EOM
  fi
  case $RESOURCE_PATH in
    *.storyboard)
-      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .storyboard`.storyboardc $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}"
+      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .storyboard`.storyboardc $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}" || true
      ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .storyboard`.storyboardc" "$RESOURCE_PATH" --sdk "${SDKROOT}" ${TARGET_DEVICE_ARGS}
      ;;
    *.xib)
-      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .xib`.nib $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}"
+      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .xib`.nib $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}" || true
      ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .xib`.nib" "$RESOURCE_PATH" --sdk "${SDKROOT}" ${TARGET_DEVICE_ARGS}
      ;;
    *.framework)
-      echo "mkdir -p ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+      echo "mkdir -p ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
      mkdir -p "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
-      echo "rsync -av $RESOURCE_PATH ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
-      rsync -av "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" $RESOURCE_PATH ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
      ;;
    *.xcdatamodel)
-      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH"`.mom\""
+      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH"`.mom\"" || true
      xcrun momc "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodel`.mom"
      ;;
    *.xcdatamodeld)
-      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodeld`.momd\""
+      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodeld`.momd\"" || true
      xcrun momc "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodeld`.momd"
      ;;
    *.xcmappingmodel)
-      echo "xcrun mapc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcmappingmodel`.cdm\""
+      echo "xcrun mapc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcmappingmodel`.cdm\"" || true
      xcrun mapc "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcmappingmodel`.cdm"
      ;;
    *.xcassets)
@@ -71,7 +86,7 @@ EOM
      XCASSET_FILES+=("$ABSOLUTE_XCASSET_FILE")
      ;;
    *)
-      echo "$RESOURCE_PATH"
+      echo "$RESOURCE_PATH" || true
      echo "$RESOURCE_PATH" >> "$RESOURCES_TO_COPY"
      ;;
  esac
@@ -85,7 +100,7 @@ if [[ "${ACTION}" == "install" ]] && [[ "${SKIP_INSTALL}" == "NO" ]]; then
 fi
 rm -f "$RESOURCES_TO_COPY"

-if [[ -n "${WRAPPER_EXTENSION}" ]] && [ "`xcrun --find actool`" ] && [ -n "$XCASSET_FILES" ]
+if [[ -n "${WRAPPER_EXTENSION}" ]] && [ "`xcrun --find actool`" ] && [ -n "${XCASSET_FILES:-}" ]
 then
  # Find all other xcassets (this unfortunately includes those of path pods and other targets).
  OTHER_XCASSETS=$(find "$PWD" -iname "*.xcassets" -type d)
@@ -95,5 +110,9 @@ then
    fi
  done <<<"$OTHER_XCASSETS"

-  printf "%s\0" "${XCASSET_FILES[@]}" | xargs -0 xcrun actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${!DEPLOYMENT_TARGET_SETTING_NAME}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
+  if [ -z ${ASSETCATALOG_COMPILER_APPICON_NAME+x} ]; then
+    printf "%s\0" "${XCASSET_FILES[@]}" | xargs -0 xcrun actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${!DEPLOYMENT_TARGET_SETTING_NAME}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
+  else
+    printf "%s\0" "${XCASSET_FILES[@]}" | xargs -0 xcrun actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${!DEPLOYMENT_TARGET_SETTING_NAME}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}" --app-icon "${ASSETCATALOG_COMPILER_APPICON_NAME}" --output-partial-info-plist "${TARGET_TEMP_DIR}/assetcatalog_generated_info_cocoapods.plist"
+  fi
 fi
@@ -1,8 +1,9 @@
-FRAMEWORK_SEARCH_PATHS = $(inherited) "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel"
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel"
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
+OTHER_CFLAGS = $(inherited) -iquote "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
 OTHER_LDFLAGS = $(inherited) -framework "ScaledCenterCarousel"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
 PODS_ROOT = ${SRCROOT}/Pods
@@ -1,8 +1,9 @@
-FRAMEWORK_SEARCH_PATHS = $(inherited) "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel"
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel"
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
+OTHER_CFLAGS = $(inherited) -iquote "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
 OTHER_LDFLAGS = $(inherited) -framework "ScaledCenterCarousel"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
 PODS_ROOT = ${SRCROOT}/Pods
@@ -1,11 +1,28 @@
 #!/bin/sh
 set -e
+set -u
+set -o pipefail
+
+if [ -z ${FRAMEWORKS_FOLDER_PATH+x} ]; then
+    # If FRAMEWORKS_FOLDER_PATH is not set, then there's nowhere for us to copy
+    # frameworks to, so exit 0 (signalling the script phase was successful).
+    exit 0
+fi

 echo "mkdir -p ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
 mkdir -p "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"

+COCOAPODS_PARALLEL_CODE_SIGN="${COCOAPODS_PARALLEL_CODE_SIGN:-false}"
 SWIFT_STDLIB_PATH="${DT_TOOLCHAIN_DIR}/usr/lib/swift/${PLATFORM_NAME}"

+# Used as a return value for each invocation of `strip_invalid_archs` function.
+STRIP_BINARY_RETVAL=0
+
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+# Copies and strips a vendored framework
 install_framework()
 {
  if [ -r "${BUILT_PRODUCTS_DIR}/$1" ]; then
@@ -23,9 +40,9 @@ install_framework()
      source="$(readlink "${source}")"
  fi

-  # use filter instead of exclude so missing patterns dont' throw errors
-  echo "rsync -av --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
-  rsync -av --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
+  # Use filter instead of exclude so missing patterns don't throw errors.
+  echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
+  rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"

  local basename
  basename="$(basename -s .framework "$1")"
@@ -54,12 +71,40 @@ install_framework()
  fi
 }

+# Copies and strips a vendored dSYM
+install_dsym() {
+  local source="$1"
+  if [ -r "$source" ]; then
+    # Copy the dSYM into a the targets temp dir.
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${DERIVED_FILES_DIR}\""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DERIVED_FILES_DIR}"
+
+    local basename
+    basename="$(basename -s .framework.dSYM "$source")"
+    binary="${DERIVED_FILES_DIR}/${basename}.framework.dSYM/Contents/Resources/DWARF/${basename}"
+
+    # Strip invalid architectures so "fat" simulator / device frameworks work on device
+    if [[ "$(file "$binary")" == *"Mach-O dSYM companion"* ]]; then
+      strip_invalid_archs "$binary"
+    fi
+
+    if [[ $STRIP_BINARY_RETVAL == 1 ]]; then
+      # Move the stripped file into its final destination.
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${DERIVED_FILES_DIR}/${basename}.framework.dSYM\" \"${DWARF_DSYM_FOLDER_PATH}\""
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${DERIVED_FILES_DIR}/${basename}.framework.dSYM" "${DWARF_DSYM_FOLDER_PATH}"
+    else
+      # The dSYM was not stripped at all, in this case touch a fake folder so the input/output paths from Xcode do not reexecute this script because the file is missing.
+      touch "${DWARF_DSYM_FOLDER_PATH}/${basename}.framework.dSYM"
+    fi
+  fi
+}
+
 # Signs a framework with the provided identity
 code_sign_if_enabled() {
-  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY}" -a "${CODE_SIGNING_REQUIRED}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
+  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY}" -a "${CODE_SIGNING_REQUIRED:-}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
    # Use the current code_sign_identitiy
    echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
-    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements '$1'"
+    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS:-} --preserve-metadata=identifier,entitlements '$1'"

    if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
      code_sign_cmd="$code_sign_cmd &"
@@ -72,11 +117,19 @@ code_sign_if_enabled() {
 # Strip invalid architectures
 strip_invalid_archs() {
  binary="$1"
-  # Get architectures for current file
-  archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | rev)"
+  # Get architectures for current target binary
+  binary_archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | awk '{$1=$1;print}' | rev)"
+  # Intersect them with the architectures we are building for
+  intersected_archs="$(echo ${ARCHS[@]} ${binary_archs[@]} | tr ' ' '\n' | sort | uniq -d)"
+  # If there are no archs supported by this binary then warn the user
+  if [[ -z "$intersected_archs" ]]; then
+    echo "warning: [CP] Vendored binary '$binary' contains architectures ($binary_archs) none of which match the current build architectures ($ARCHS)."
+    STRIP_BINARY_RETVAL=0
+    return
+  fi
  stripped=""
-  for arch in $archs; do
-    if ! [[ "${VALID_ARCHS}" == *"$arch"* ]]; then
+  for arch in $binary_archs; do
+    if ! [[ "${ARCHS}" == *"$arch"* ]]; then
      # Strip non-valid architectures in-place
      lipo -remove "$arch" -output "$binary" "$binary" || exit 1
      stripped="$stripped $arch"
@@ -85,16 +138,17 @@ strip_invalid_archs() {
  if [[ "$stripped" ]]; then
    echo "Stripped $binary of architectures:$stripped"
  fi
+  STRIP_BINARY_RETVAL=1
 }


 if [[ "$CONFIGURATION" == "Debug" ]]; then
-  install_framework "$BUILT_PRODUCTS_DIR/Expecta/Expecta.framework"
-  install_framework "$BUILT_PRODUCTS_DIR/Specta/Specta.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/Expecta/Expecta.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/Specta/Specta.framework"
 fi
 if [[ "$CONFIGURATION" == "Release" ]]; then
-  install_framework "$BUILT_PRODUCTS_DIR/Expecta/Expecta.framework"
-  install_framework "$BUILT_PRODUCTS_DIR/Specta/Specta.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/Expecta/Expecta.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/Specta/Specta.framework"
 fi
 if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
  wait
@@ -1,5 +1,13 @@
 #!/bin/sh
 set -e
+set -u
+set -o pipefail
+
+if [ -z ${UNLOCALIZED_RESOURCES_FOLDER_PATH+x} ]; then
+    # If UNLOCALIZED_RESOURCES_FOLDER_PATH is not set, then there's nowhere for us to copy
+    # resources to, so exit 0 (signalling the script phase was successful).
+    exit 0
+fi

 mkdir -p "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"

@@ -8,7 +16,11 @@ RESOURCES_TO_COPY=${PODS_ROOT}/resources-to-copy-${TARGETNAME}.txt

 XCASSET_FILES=()

-case "${TARGETED_DEVICE_FAMILY}" in
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+case "${TARGETED_DEVICE_FAMILY:-}" in
  1,2)
    TARGET_DEVICE_ARGS="--target-device ipad --target-device iphone"
    ;;
@@ -21,6 +33,9 @@ case "${TARGETED_DEVICE_FAMILY}" in
  3)
    TARGET_DEVICE_ARGS="--target-device tv"
    ;;
+  4)
+    TARGET_DEVICE_ARGS="--target-device watch"
+    ;;
  *)
    TARGET_DEVICE_ARGS="--target-device mac"
    ;;
@@ -41,29 +56,29 @@ EOM
  fi
  case $RESOURCE_PATH in
    *.storyboard)
-      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .storyboard`.storyboardc $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}"
+      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .storyboard`.storyboardc $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}" || true
      ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .storyboard`.storyboardc" "$RESOURCE_PATH" --sdk "${SDKROOT}" ${TARGET_DEVICE_ARGS}
      ;;
    *.xib)
-      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .xib`.nib $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}"
+      echo "ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile ${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .xib`.nib $RESOURCE_PATH --sdk ${SDKROOT} ${TARGET_DEVICE_ARGS}" || true
      ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target ${!DEPLOYMENT_TARGET_SETTING_NAME} --output-format human-readable-text --compile "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \"$RESOURCE_PATH\" .xib`.nib" "$RESOURCE_PATH" --sdk "${SDKROOT}" ${TARGET_DEVICE_ARGS}
      ;;
    *.framework)
-      echo "mkdir -p ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+      echo "mkdir -p ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
      mkdir -p "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
-      echo "rsync -av $RESOURCE_PATH ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
-      rsync -av "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" $RESOURCE_PATH ${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}" || true
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
      ;;
    *.xcdatamodel)
-      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH"`.mom\""
+      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH"`.mom\"" || true
      xcrun momc "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodel`.mom"
      ;;
    *.xcdatamodeld)
-      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodeld`.momd\""
+      echo "xcrun momc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodeld`.momd\"" || true
      xcrun momc "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcdatamodeld`.momd"
      ;;
    *.xcmappingmodel)
-      echo "xcrun mapc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcmappingmodel`.cdm\""
+      echo "xcrun mapc \"$RESOURCE_PATH\" \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcmappingmodel`.cdm\"" || true
      xcrun mapc "$RESOURCE_PATH" "${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$RESOURCE_PATH" .xcmappingmodel`.cdm"
      ;;
    *.xcassets)
@@ -71,7 +86,7 @@ EOM
      XCASSET_FILES+=("$ABSOLUTE_XCASSET_FILE")
      ;;
    *)
-      echo "$RESOURCE_PATH"
+      echo "$RESOURCE_PATH" || true
      echo "$RESOURCE_PATH" >> "$RESOURCES_TO_COPY"
      ;;
  esac
@@ -85,7 +100,7 @@ if [[ "${ACTION}" == "install" ]] && [[ "${SKIP_INSTALL}" == "NO" ]]; then
 fi
 rm -f "$RESOURCES_TO_COPY"

-if [[ -n "${WRAPPER_EXTENSION}" ]] && [ "`xcrun --find actool`" ] && [ -n "$XCASSET_FILES" ]
+if [[ -n "${WRAPPER_EXTENSION}" ]] && [ "`xcrun --find actool`" ] && [ -n "${XCASSET_FILES:-}" ]
 then
  # Find all other xcassets (this unfortunately includes those of path pods and other targets).
  OTHER_XCASSETS=$(find "$PWD" -iname "*.xcassets" -type d)
@@ -95,5 +110,9 @@ then
    fi
  done <<<"$OTHER_XCASSETS"

-  printf "%s\0" "${XCASSET_FILES[@]}" | xargs -0 xcrun actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${!DEPLOYMENT_TARGET_SETTING_NAME}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
+  if [ -z ${ASSETCATALOG_COMPILER_APPICON_NAME+x} ]; then
+    printf "%s\0" "${XCASSET_FILES[@]}" | xargs -0 xcrun actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${!DEPLOYMENT_TARGET_SETTING_NAME}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
+  else
+    printf "%s\0" "${XCASSET_FILES[@]}" | xargs -0 xcrun actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${!DEPLOYMENT_TARGET_SETTING_NAME}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}" --app-icon "${ASSETCATALOG_COMPILER_APPICON_NAME}" --output-partial-info-plist "${TARGET_TEMP_DIR}/assetcatalog_generated_info_cocoapods.plist"
+  fi
 fi
@@ -1,8 +1,9 @@
-FRAMEWORK_SEARCH_PATHS = $(inherited) $(PLATFORM_DIR)/Developer/Library/Frameworks "$PODS_CONFIGURATION_BUILD_DIR/Expecta" "$PODS_CONFIGURATION_BUILD_DIR/Specta" "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel"
+FRAMEWORK_SEARCH_PATHS = $(inherited) $(PLATFORM_DIR)/Developer/Library/Frameworks "${PODS_CONFIGURATION_BUILD_DIR}/Expecta" "${PODS_CONFIGURATION_BUILD_DIR}/Specta" "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel"
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$PODS_CONFIGURATION_BUILD_DIR/Expecta/Expecta.framework/Headers" -iquote "$PODS_CONFIGURATION_BUILD_DIR/Specta/Specta.framework/Headers" $(inherited) -iquote "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
+OTHER_CFLAGS = $(inherited) -iquote "${PODS_CONFIGURATION_BUILD_DIR}/Expecta/Expecta.framework/Headers" -iquote "${PODS_CONFIGURATION_BUILD_DIR}/Specta/Specta.framework/Headers" -iquote "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
 OTHER_LDFLAGS = $(inherited) -framework "Expecta" -framework "Specta"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
 PODS_ROOT = ${SRCROOT}/Pods
@@ -1,8 +1,9 @@
-FRAMEWORK_SEARCH_PATHS = $(inherited) $(PLATFORM_DIR)/Developer/Library/Frameworks "$PODS_CONFIGURATION_BUILD_DIR/Expecta" "$PODS_CONFIGURATION_BUILD_DIR/Specta" "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel"
+FRAMEWORK_SEARCH_PATHS = $(inherited) $(PLATFORM_DIR)/Developer/Library/Frameworks "${PODS_CONFIGURATION_BUILD_DIR}/Expecta" "${PODS_CONFIGURATION_BUILD_DIR}/Specta" "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel"
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
 LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
-OTHER_CFLAGS = $(inherited) -iquote "$PODS_CONFIGURATION_BUILD_DIR/Expecta/Expecta.framework/Headers" -iquote "$PODS_CONFIGURATION_BUILD_DIR/Specta/Specta.framework/Headers" $(inherited) -iquote "$PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
+OTHER_CFLAGS = $(inherited) -iquote "${PODS_CONFIGURATION_BUILD_DIR}/Expecta/Expecta.framework/Headers" -iquote "${PODS_CONFIGURATION_BUILD_DIR}/Specta/Specta.framework/Headers" -iquote "${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework/Headers"
 OTHER_LDFLAGS = $(inherited) -framework "Expecta" -framework "Specta"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
 PODS_ROOT = ${SRCROOT}/Pods
@@ -15,7 +15,7 @@
  <key>CFBundlePackageType</key>
  <string>FMWK</string>
  <key>CFBundleShortVersionString</key>
-  <string>0.1.0</string>
+  <string>1.0.1</string>
  <key>CFBundleSignature</key>
  <string>????</string>
  <key>CFBundleVersion</key>
@@ -1,9 +1,8 @@
-CONFIGURATION_BUILD_DIR = $PODS_CONFIGURATION_BUILD_DIR/ScaledCenterCarousel
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/ScaledCenterCarousel
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
-HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Public"
 OTHER_LDFLAGS = -framework "UIKit"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
 PODS_ROOT = ${SRCROOT}
 PODS_TARGET_SRCROOT = ${PODS_ROOT}/../..
 PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
@@ -1,11 +1,10 @@
-CONFIGURATION_BUILD_DIR = $PODS_CONFIGURATION_BUILD_DIR/Specta
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/Specta
 ENABLE_BITCODE = NO
 FRAMEWORK_SEARCH_PATHS = $(inherited)  "$(PLATFORM_DIR)/Developer/Library/Frameworks"
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
-HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Public"
 OTHER_LDFLAGS = -framework "Foundation" -framework "XCTest"
-PODS_BUILD_DIR = $BUILD_DIR
-PODS_CONFIGURATION_BUILD_DIR = $PODS_BUILD_DIR/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
 PODS_ROOT = ${SRCROOT}
 PODS_TARGET_SRCROOT = ${PODS_ROOT}/Specta
 PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
@@ -223,7 +223,6 @@
 				6003F587195388D20070C39A /* Frameworks */,
 				6003F588195388D20070C39A /* Resources */,
 				F76140CB44EF7563E9D7156A /* [CP] Embed Pods Frameworks */,
-				46B806111ED61FA76D428BF6 /* [CP] Copy Pods Resources */,
 			);
 			buildRules = (
 			);
@@ -243,7 +242,6 @@
 				6003F5AB195388D20070C39A /* Frameworks */,
 				6003F5AC195388D20070C39A /* Resources */,
 				41C005B6526ECF75FD91EC6A /* [CP] Embed Pods Frameworks */,
-				6901919B9AE8B00256C0EC2B /* [CP] Copy Pods Resources */,
 			);
 			buildRules = (
 			);
@@ -262,7 +260,7 @@
 			isa = PBXProject;
 			attributes = {
 				CLASSPREFIX = YT;
-				LastUpgradeCheck = 0820;
+				LastUpgradeCheck = 1110;
 				ORGANIZATIONNAME = "yuriy-tolstoguzov";
 				TargetAttributes = {
 					6003F589195388D20070C39A = {
@@ -279,6 +277,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 				Base,
 			);
@@ -322,58 +321,36 @@
 			files = (
 			);
 			inputPaths = (
+				"${SRCROOT}/Pods/Target Support Files/Pods-ScaledCenterCarousel_Tests/Pods-ScaledCenterCarousel_Tests-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/Expecta/Expecta.framework",
+				"${BUILT_PRODUCTS_DIR}/Specta/Specta.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Expecta.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Specta.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
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-			showEnvVarsInLog = 0;
-		};
 		972BD431F5D3934EFB6FF50A /* [CP] Check Pods Manifest.lock */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
 			);
 			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
 			);
 			name = "[CP] Check Pods Manifest.lock";
 			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-ScaledCenterCarousel_Example-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
 			showEnvVarsInLog = 0;
 		};
 		9EDB10FB4388792527478DBF /* [CP] Check Pods Manifest.lock */ = {
@@ -382,13 +359,16 @@
 			files = (
 			);
 			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
 			);
 			name = "[CP] Check Pods Manifest.lock";
 			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-ScaledCenterCarousel_Tests-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
 			showEnvVarsInLog = 0;
 		};
 		F76140CB44EF7563E9D7156A /* [CP] Embed Pods Frameworks */ = {
@@ -397,9 +377,12 @@
 			files = (
 			);
 			inputPaths = (
+				"${SRCROOT}/Pods/Target Support Files/Pods-ScaledCenterCarousel_Example/Pods-ScaledCenterCarousel_Example-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/ScaledCenterCarousel/ScaledCenterCarousel.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/ScaledCenterCarousel.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -472,18 +455,27 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -517,18 +509,27 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0820"
+   LastUpgradeVersion = "1110"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -27,6 +27,15 @@
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "6003F589195388D20070C39A"
+            BuildableName = "ScaledCenterCarousel_Example.app"
+            BlueprintName = "ScaledCenterCarousel_Example"
+            ReferencedContainer = "container:ScaledCenterCarousel.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
      <Testables>
         <TestableReference
            skipped = "NO">
@@ -39,17 +48,6 @@
            </BuildableReference>
         </TestableReference>
      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "6003F589195388D20070C39A"
-            BuildableName = "ScaledCenterCarousel_Example.app"
-            BlueprintName = "ScaledCenterCarousel_Example"
-            ReferencedContainer = "container:ScaledCenterCarousel.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
   </TestAction>
   <LaunchAction
      buildConfiguration = "Debug"
@@ -71,8 +69,6 @@
            ReferencedContainer = "container:ScaledCenterCarousel.xcodeproj">
         </BuildableReference>
      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
   </LaunchAction>
   <ProfileAction
      buildConfiguration = "Release"
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
@@ -1,5 +1,6 @@
 # ScaledCenterCarousel

+[![codebeat badge](https://codebeat.co/badges/aeac52c6-2b7d-4039-a01b-e2ff9ca45803)](https://codebeat.co/projects/github-com-yuriy-tolstoguzov-scaledcentercarousel-master)
 [![CI Status](http://img.shields.io/travis/yuriy-tolstoguzov/ScaledCenterCarousel.svg?style=flat)](https://travis-ci.org/yuriy-tolstoguzov/ScaledCenterCarousel)
 [![Version](https://img.shields.io/cocoapods/v/ScaledCenterCarousel.svg?style=flat)](http://cocoapods.org/pods/ScaledCenterCarousel)
 [![License](https://img.shields.io/cocoapods/l/ScaledCenterCarousel.svg?style=flat)](http://cocoapods.org/pods/ScaledCenterCarousel)
@@ -15,23 +16,79 @@ Before using library, make sure to have a look at Example project.

 To run the example project, clone the repo, and run `pod install` from the Example directory first.

+## Customization
+
+The library is made purposely simple, but there are number of ways you can customize it. Most of properties could be set from IB via `IBInspectable`.
+
+### Layout
+
+- `centerCellHeight/centerCell.height` - The height of cell at the center position.
+- `centerCellWidth/centerCell.width` - The width of cell at the center position.
+- `normalCellHeight/normalCell.height` - The height of cells that far enough from the center position.
+- `normalCellWidth/normalCell.width` - The width of cells that far enough from the center position.
+- `proposedContentOffset` - The content offset that will be set once after next data source change. Think about adding items after you get them from web service and you want to pre-select one of them.
+
+### Pagination (UICollectionViewDelegate)
+
+If you want user to be able to select only one item at a time, you probably will use built-in `YTScaledCenterCarouselPaginator/ScaledCenterCarouselPaginator` and set it as your `UICollectionView` delegate.
+
+It has next delegate methods:
+- `-carousel:didSelectElementAtIndex: / carousel(_,didSelectElementAt)`
+- `-carousel:didScrollToVisibleCells: / carousel(_,didScrollTo)`
+
+If your data source will adopt `YTScaledCenterCarouselDataSource/ScaledCenterCarouselDataSource` protocol. It will always know what item is selected now and can use this knowledge to add some customization to selected cells. Also it encouraged to check cell selected state, because it's updated accordingly as well.
+
 ## Requirements

 iOS 7+

 ## Installation

-ScaledCenterCarousel is available through [CocoaPods](http://cocoapods.org). To install
-it, simply add the following line to your Podfile:
+### [CocoaPods](http://cocoapods.org)
+
+To install
+it through [CocoaPods](http://cocoapods.org), simply add the following line to your Podfile:

 ```ruby
-pod "ScaledCenterCarousel"
+pod "ScaledCenterCarousel"      # ObjC version
+
+pod "ScaledCenterCarouselSwift" # Swift version
+```
+
+Run update command in your terminal:
+
+```bash
+$ pod install
+```
+
+
+### [Carthage](https://github.com/Carthage/Carthage)
+
+Add this line to your Cartfile:
+
+```ruby
+github "yuriy-tolstoguzov/ScaledCenterCarousel"
+```
+
+Run update command in your terminal:
+
+```bash
+$ carthage update
 ```

 ## Author

 yuriy-tolstoguzov, Yuriy.Tolstoguzov@gmail.com

+## Contribution
+
+If you want to contribute, here is couple of topics I have in mind:
+- [X] Swift migration
+- [ ] Support for vertical layout
+- [ ] Documentation improvements
+
+Feel free to make a pull requests or contact me if you have questions.
+
 ## License

 ScaledCenterCarousel is available under the MIT license. See the LICENSE file for more info.
@@ -128,7 +128,7 @@
 		1114799B1EAD2BD100F6C7D5 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0820;
+				LastUpgradeCheck = 1110;
 				ORGANIZATIONNAME = "Yuriy Tolstoguzov";
 				TargetAttributes = {
 					111479A31EAD2BD100F6C7D5 = {
@@ -140,10 +140,11 @@
 			};
 			buildConfigurationList = 1114799E1EAD2BD100F6C7D5 /* Build configuration list for PBXProject "ScaledCenterCarousel" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = 1114799A1EAD2BD100F6C7D5;
 			productRefGroup = 111479A51EAD2BD100F6C7D5 /* Products */;
@@ -182,20 +183,29 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -233,20 +243,29 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0820"
+   LastUpgradeVersion = "1110"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -29,8 +29,6 @@
      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
      </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
   </TestAction>
   <LaunchAction
      buildConfiguration = "Debug"
@@ -51,8 +49,6 @@
            ReferencedContainer = "container:ScaledCenterCarousel.xcodeproj">
         </BuildableReference>
      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
   </LaunchAction>
   <ProfileAction
      buildConfiguration = "Release"
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
@@ -0,0 +1,23 @@
+Pod::Spec.new do |spec|
+
+  spec.name                   = "ScaledCenterCarouselSwift"
+  spec.version                = "1.0.0"
+  spec.summary                = "A carousel-based layout for UICollectionView with scaled center item."
+  spec.description            = <<-DESC
+A carousel-based layout for UICollectionView with scaled center item. 
+It also contains paginator to force user to select single item which will be presented exaclty at center of carousel.
+                              DESC
+  spec.homepage               = 'https://github.com/yuriy-tolstoguzov/ScaledCenterCarousel'
+  spec.screenshots            = 'https://raw.githubusercontent.com/yuriy-tolstoguzov/ScaledCenterCarousel/master/Example/Assets/ScaledCenterCarousel.gif'
+  spec.license                = { :type => "MIT", :file => "LICENSE" }
+
+  spec.author                 = { 'yuriy-tolstoguzov' => 'Yuriy.Tolstoguzov@gmail.com' }
+  spec.social_media_url       = 'https://twitter.com/ImOssir'
+
+  spec.ios.deployment_target  = "8.0"
+  spec.swift_version          = "5.0"
+  spec.source                 = { :git => 'https://github.com/yuriy-tolstoguzov/ScaledCenterCarousel.git', :tag => "#{spec.version}-Swift" }
+  spec.source_files           = 'Swift/ScaledCenterCarousel/Classes/**/*'
+  spec.frameworks             = 'UIKit'
+
+end
@@ -0,0 +1,421 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 50;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		F69B819C2376851F001ED129 /* ScaledCenterCarousel.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F69B8199237684FA001ED129 /* ScaledCenterCarousel.framework */; };
+		F6E29B91235D059900E10EA7 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6E29B90235D059900E10EA7 /* AppDelegate.swift */; };
+		F6E29B97235D059B00E10EA7 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = F6E29B96235D059B00E10EA7 /* Assets.xcassets */; };
+		F6E29B9D235D059B00E10EA7 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = F6E29B9B235D059B00E10EA7 /* LaunchScreen.storyboard */; };
+		F6E29BA5235D171C00E10EA7 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = F6E29BA4235D171C00E10EA7 /* Main.storyboard */; };
+		F6E29BA7235D17BD00E10EA7 /* CarouselCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6E29BA6235D17BD00E10EA7 /* CarouselCell.swift */; };
+		F6E29BA9235D18EC00E10EA7 /* CarouselDataSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6E29BA8235D18EC00E10EA7 /* CarouselDataSource.swift */; };
+		F6E29BAB235D192C00E10EA7 /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6E29BAA235D192C00E10EA7 /* ViewController.swift */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		F69B8198237684FA001ED129 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = F69B8194237684FA001ED129 /* ScaledCenterCarousel.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = F6CCE38A235BC826001CC2E5;
+			remoteInfo = ScaledCenterCarousel;
+		};
+		F69B819A23768518001ED129 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = F69B8194237684FA001ED129 /* ScaledCenterCarousel.xcodeproj */;
+			proxyType = 1;
+			remoteGlobalIDString = F6CCE389235BC826001CC2E5;
+			remoteInfo = ScaledCenterCarousel;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		F6E29BB0235D1C4600E10EA7 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
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+/* End XCConfigurationList section */
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+}
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
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+      location = "self:ScaledCenterCarouselSwiftExample.xcodeproj">
+   </FileRef>
+</Workspace>
@@ -0,0 +1,8 @@
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+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
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+</dict>
+</plist>
@@ -0,0 +1,78 @@
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+         <BuildActionEntry
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+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
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+         </BuildActionEntry>
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+   </BuildAction>
+   <TestAction
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+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
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+   </LaunchAction>
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+      shouldUseLaunchSchemeArgsEnv = "YES"
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@@ -0,0 +1,18 @@
+//
+//  AppDelegate.swift
+//  ScaledCenterCarouselSwiftExample
+//
+//  Created by Yuriy Tolstoguzov on 10/20/19.
+//  Copyright © 2019 Yuriy Tolstoguzov. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+    var window: UIWindow?
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        return true
+    }
+}
+
@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>
@@ -0,0 +1,29 @@
+//
+//  CarouselCell.swift
+//  ScaledCenterCarouselSwiftExample
+//
+//  Created by Yuriy Tolstoguzov on 10/20/19.
+//  Copyright © 2019 Yuriy Tolstoguzov. All rights reserved.
+//
+
+import UIKit
+
+class CarouselCell: UICollectionViewCell {
+    @IBOutlet weak var label: UILabel?
+
+    var text: String? {
+        didSet {
+            label?.text = text
+        }
+    }
+
+    override var isSelected: Bool {
+        get {
+            super.isSelected
+        }
+        set {
+            super.isSelected = newValue
+            label?.textColor = isSelected ? .purple : .darkGray
+        }
+    }
+}
@@ -0,0 +1,21 @@
+import UIKit
+
+class CarouselDataSource: NSObject, UICollectionViewDataSource {
+    var selectedIndex = Int(0)
+
+    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
+        return 100
+    }
+
+    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
+        guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell",
+                                                            for: indexPath) as? CarouselCell
+        else {
+            return UICollectionViewCell()
+        }
+
+        cell.text = String(indexPath.row)
+        cell.isSelected = selectedIndex == indexPath.row
+        return cell
+    }
+}
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>
@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="o2x-hz-A4A">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="08G-ua-ApH">
+            <objects>
+                <viewController id="o2x-hz-A4A" customClass="ViewController" customModule="ScaledCenterCarouselSwiftExample" customModuleProvider="target" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="AgR-AN-5BQ"/>
+                        <viewControllerLayoutGuide type="bottom" id="FWG-vi-AFo"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Rnw-yt-d7i">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="t8s-G5-mcY" userLabel="Horizontal Center View">
+                                <rect key="frame" x="206.5" y="398" width="1" height="100"/>
+                                <color key="backgroundColor" red="0.5" green="0.0" blue="0.5" alpha="1" colorSpace="calibratedRGB"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="100" id="DiL-Kg-xCw"/>
+                                    <constraint firstAttribute="width" constant="1" id="hpT-U1-Y9n"/>
+                                </constraints>
+                            </view>
+                            <collectionView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" alwaysBounceHorizontal="YES" showsHorizontalScrollIndicator="NO" showsVerticalScrollIndicator="NO" minimumZoomScale="0.0" maximumZoomScale="0.0" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="hjk-H5-kzw">
+                                <rect key="frame" x="0.0" y="408" width="414" height="80"/>
+                                <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="80" id="tzh-fy-VZX"/>
+                                </constraints>
+                                <collectionViewLayout key="collectionViewLayout" id="i7U-1N-BZC" customClass="ScaledCenterCarouselLayout" customModule="ScaledCenterCarousel">
+                                    <userDefinedRuntimeAttributes>
+                                        <userDefinedRuntimeAttribute type="point" keyPath="proposedContentOffset">
+                                            <point key="value" x="100" y="0.0"/>
+                                        </userDefinedRuntimeAttribute>
+                                        <userDefinedRuntimeAttribute type="size" keyPath="centerCell">
+                                            <size key="value" width="90" height="65"/>
+                                        </userDefinedRuntimeAttribute>
+                                        <userDefinedRuntimeAttribute type="size" keyPath="normalCell">
+                                            <size key="value" width="53" height="60"/>
+                                        </userDefinedRuntimeAttribute>
+                                    </userDefinedRuntimeAttributes>
+                                </collectionViewLayout>
+                                <cells>
+                                    <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" reuseIdentifier="Cell" id="cIc-oH-4YW" customClass="CarouselCell" customModule="ScaledCenterCarouselSwiftExample" customModuleProvider="target">
+                                        <rect key="frame" x="0.0" y="0.0" width="50" height="50"/>
+                                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                        <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center">
+                                            <rect key="frame" x="0.0" y="0.0" width="50" height="50"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="T8S-bz-b8f">
+                                                    <rect key="frame" x="1" y="1" width="48" height="48"/>
+                                                    <color key="backgroundColor" white="0.88457761779999999" alpha="1" colorSpace="calibratedWhite"/>
+                                                </view>
+                                                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ZWw-gP-A5J">
+                                                    <rect key="frame" x="4" y="14.5" width="42" height="21"/>
+                                                    <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                                    <color key="textColor" white="0.33333333329999998" alpha="1" colorSpace="calibratedWhite"/>
+                                                    <nil key="highlightedColor"/>
+                                                </label>
+                                            </subviews>
+                                        </view>
+                                        <color key="backgroundColor" white="0.8971585648" alpha="1" colorSpace="calibratedWhite"/>
+                                        <constraints>
+                                            <constraint firstItem="ZWw-gP-A5J" firstAttribute="centerX" secondItem="cIc-oH-4YW" secondAttribute="centerX" id="2l6-qx-97X"/>
+                                            <constraint firstAttribute="trailing" secondItem="T8S-bz-b8f" secondAttribute="trailing" constant="1" id="5QX-NS-OI3"/>
+                                            <constraint firstItem="T8S-bz-b8f" firstAttribute="top" secondItem="cIc-oH-4YW" secondAttribute="top" constant="1" id="JMX-Td-Woj"/>
+                                            <constraint firstItem="ZWw-gP-A5J" firstAttribute="centerY" secondItem="cIc-oH-4YW" secondAttribute="centerY" id="kod-NH-wjo"/>
+                                            <constraint firstItem="T8S-bz-b8f" firstAttribute="leading" secondItem="cIc-oH-4YW" secondAttribute="leading" constant="1" id="nDK-OJ-7NK"/>
+                                            <constraint firstAttribute="bottom" secondItem="T8S-bz-b8f" secondAttribute="bottom" constant="1" id="u4f-Bi-N8t"/>
+                                        </constraints>
+                                        <connections>
+                                            <outlet property="label" destination="ZWw-gP-A5J" id="6zO-wf-z82"/>
+                                        </connections>
+                                    </collectionViewCell>
+                                </cells>
+                            </collectionView>
+                        </subviews>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <constraints>
+                            <constraint firstAttribute="centerY" secondItem="hjk-H5-kzw" secondAttribute="centerY" id="8l8-JK-zwP"/>
+                            <constraint firstAttribute="centerY" secondItem="t8s-G5-mcY" secondAttribute="centerY" id="LKR-JY-c6k"/>
+                            <constraint firstAttribute="trailing" secondItem="hjk-H5-kzw" secondAttribute="trailing" id="OQv-b5-VRJ"/>
+                            <constraint firstAttribute="centerX" secondItem="t8s-G5-mcY" secondAttribute="centerX" id="XQ8-ac-y3O"/>
+                            <constraint firstItem="hjk-H5-kzw" firstAttribute="leading" secondItem="Rnw-yt-d7i" secondAttribute="leading" id="jqb-IP-Gz2"/>
+                        </constraints>
+                        <viewLayoutGuide key="safeArea" id="LTf-zo-u7O"/>
+                    </view>
+                    <connections>
+                        <outlet property="collectionView" destination="hjk-H5-kzw" id="mGN-7R-6GH"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="fdL-0b-nur" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="33.5" y="35.5"/>
+        </scene>
+    </scenes>
+</document>
@@ -0,0 +1,33 @@
+//
+//  ViewController.swift
+//  ScaledCenterCarouselSwiftExample
+//
+//  Created by Yuriy Tolstoguzov on 10/20/19.
+//  Copyright © 2019 Yuriy Tolstoguzov. All rights reserved.
+//
+
+import UIKit
+import ScaledCenterCarousel
+
+class ViewController: UIViewController, ScaledCenterCarouselPaginatorDelegate {
+    @IBOutlet weak var collectionView: UICollectionView?
+    let collectionViewDataSource = CarouselDataSource()
+    lazy var paginator = ScaledCenterCarouselPaginator(collectionView: collectionView!, delegate: self)
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        guard let collectionView = collectionView else { return }
+        collectionView.dataSource = collectionViewDataSource
+        paginator = ScaledCenterCarouselPaginator(collectionView: collectionView,
+                                                  delegate: self)
+    }
+
+    // MARK: - CarouselCenterPagerDelegate
+
+    func carousel(_ collectionView: UICollectionView, didSelectElementAt index: UInt) {
+    }
+
+    func carousel(_ collectionView: UICollectionView, didScrollTo visibleCells: [UICollectionViewCell]) {
+    }
+}
+
@@ -0,0 +1,350 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 50;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		F6CCE397235BC9DA001CC2E5 /* ScaledCenterCarouselLayout.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6CCE396235BC9DA001CC2E5 /* ScaledCenterCarouselLayout.swift */; };
+		F6E29B83235BDE0600E10EA7 /* ScaledCenterCarouselPaginator.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6E29B82235BDE0600E10EA7 /* ScaledCenterCarouselPaginator.swift */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+		F6CCE38A235BC826001CC2E5 /* ScaledCenterCarousel.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = ScaledCenterCarousel.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		F6CCE38E235BC826001CC2E5 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		F6CCE396235BC9DA001CC2E5 /* ScaledCenterCarouselLayout.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScaledCenterCarouselLayout.swift; sourceTree = "<group>"; };
+		F6E29B82235BDE0600E10EA7 /* ScaledCenterCarouselPaginator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScaledCenterCarouselPaginator.swift; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		F6CCE387235BC826001CC2E5 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		F6CCE380235BC826001CC2E5 = {
+			isa = PBXGroup;
+			children = (
+				F6CCE38C235BC826001CC2E5 /* ScaledCenterCarousel */,
+				F6CCE38B235BC826001CC2E5 /* Products */,
+			);
+			sourceTree = "<group>";
+		};
+		F6CCE38B235BC826001CC2E5 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				F6CCE38A235BC826001CC2E5 /* ScaledCenterCarousel.framework */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		F6CCE38C235BC826001CC2E5 /* ScaledCenterCarousel */ = {
+			isa = PBXGroup;
+			children = (
+				F6CCE395235BC99F001CC2E5 /* Classes */,
+				F6CCE38E235BC826001CC2E5 /* Info.plist */,
+			);
+			path = ScaledCenterCarousel;
+			sourceTree = "<group>";
+		};
+		F6CCE395235BC99F001CC2E5 /* Classes */ = {
+			isa = PBXGroup;
+			children = (
+				F6CCE396235BC9DA001CC2E5 /* ScaledCenterCarouselLayout.swift */,
+				F6E29B82235BDE0600E10EA7 /* ScaledCenterCarouselPaginator.swift */,
+			);
+			path = Classes;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXHeadersBuildPhase section */
+		F6CCE385235BC826001CC2E5 /* Headers */ = {
+			isa = PBXHeadersBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXHeadersBuildPhase section */
+
+/* Begin PBXNativeTarget section */
+		F6CCE389235BC826001CC2E5 /* ScaledCenterCarousel */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = F6CCE392235BC826001CC2E5 /* Build configuration list for PBXNativeTarget "ScaledCenterCarousel" */;
+			buildPhases = (
+				F6CCE385235BC826001CC2E5 /* Headers */,
+				F6CCE386235BC826001CC2E5 /* Sources */,
+				F6CCE387235BC826001CC2E5 /* Frameworks */,
+				F6CCE388235BC826001CC2E5 /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = ScaledCenterCarousel;
+			productName = ScaledCenterCarousel;
+			productReference = F6CCE38A235BC826001CC2E5 /* ScaledCenterCarousel.framework */;
+			productType = "com.apple.product-type.framework";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		F6CCE381235BC826001CC2E5 /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 1110;
+				ORGANIZATIONNAME = "Yuriy Tolstoguzov";
+				TargetAttributes = {
+					F6CCE389235BC826001CC2E5 = {
+						CreatedOnToolsVersion = 11.1;
+						LastSwiftMigration = 1110;
+					};
+				};
+			};
+			buildConfigurationList = F6CCE384235BC826001CC2E5 /* Build configuration list for PBXProject "ScaledCenterCarousel" */;
+			compatibilityVersion = "Xcode 9.3";
+			developmentRegion = en;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+				Base,
+			);
+			mainGroup = F6CCE380235BC826001CC2E5;
+			productRefGroup = F6CCE38B235BC826001CC2E5 /* Products */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				F6CCE389235BC826001CC2E5 /* ScaledCenterCarousel */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		F6CCE388235BC826001CC2E5 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		F6CCE386235BC826001CC2E5 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				F6E29B83235BDE0600E10EA7 /* ScaledCenterCarouselPaginator.swift in Sources */,
+				F6CCE397235BC9DA001CC2E5 /* ScaledCenterCarouselLayout.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		F6CCE390235BC826001CC2E5 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
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+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
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+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				COPY_PHASE_STRIP = NO;
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+				DYLIB_CURRENT_VERSION = 1;
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				INFOPLIST_FILE = ScaledCenterCarousel/Info.plist;
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+		F6CCE394235BC826001CC2E5 /* Release */ = {
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+				DYLIB_COMPATIBILITY_VERSION = 1;
+				DYLIB_CURRENT_VERSION = 1;
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				INFOPLIST_FILE = ScaledCenterCarousel/Info.plist;
+				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
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+				PRODUCT_BUNDLE_IDENTIFIER = "yuriy-tolstoguzov.ScaledCenterCarousel";
+				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
+				SKIP_INSTALL = YES;
+				SUPPORTS_MACCATALYST = NO;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
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+			name = Release;
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+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		F6CCE384235BC826001CC2E5 /* Build configuration list for PBXProject "ScaledCenterCarousel" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				F6CCE390235BC826001CC2E5 /* Debug */,
+				F6CCE391235BC826001CC2E5 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		F6CCE392235BC826001CC2E5 /* Build configuration list for PBXNativeTarget "ScaledCenterCarousel" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				F6CCE393235BC826001CC2E5 /* Debug */,
+				F6CCE394235BC826001CC2E5 /* Release */,
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+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = F6CCE381235BC826001CC2E5 /* Project object */;
+}
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:ScaledCenterCarousel.xcodeproj">
+   </FileRef>
+</Workspace>
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1110"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "F6CCE389235BC826001CC2E5"
+               BuildableName = "ScaledCenterCarousel.framework"
+               BlueprintName = "ScaledCenterCarousel"
+               ReferencedContainer = "container:ScaledCenterCarousel.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "F6CCE389235BC826001CC2E5"
+            BuildableName = "ScaledCenterCarousel.framework"
+            BlueprintName = "ScaledCenterCarousel"
+            ReferencedContainer = "container:ScaledCenterCarousel.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
@@ -0,0 +1,117 @@
+//
+//  ScaledCenterCarouselLayout.swift
+//  ScaledCenterCarousel
+//
+//  Created by Yuriy Tolstoguzov on 10/19/19.
+//  Copyright © 2019 Yuriy Tolstoguzov. All rights reserved.
+//
+
+import UIKit
+
+open class ScaledCenterCarouselLayout: UICollectionViewLayout {
+    @IBInspectable open var centerCell = CGSize.zero
+    @IBInspectable open var normalCell = CGSize.zero
+
+    @IBInspectable open var proposedContentOffset: CGPoint = CGPoint(x: NSNotFound, y: 0)
+    public let defaultProposedContentOffset = CGPoint(x: NSNotFound, y: 0)
+
+    @IBInspectable open var isIgnoringBoundsChange = false
+
+    private var layoutInformation: [UICollectionViewLayoutAttributes]?
+    private var currentVisibleRect = CGRect.zero
+
+    public init(centerCellSize: CGSize, normalCellSize: CGSize) {
+        self.centerCell = centerCellSize
+        self.normalCell = normalCellSize
+        super.init()
+    }
+
+    required public init?(coder: NSCoder) {
+        super.init(coder: coder)
+    }
+
+    open override var collectionViewContentSize: CGSize {
+        guard let collectionView = collectionView else { return .zero }
+        let numberOfItems = CGFloat(collectionView.numberOfItems(inSection: 0))
+        let sideSpace = (collectionView.bounds.size.width - centerCell.width) / 2
+        let width = normalCell.width * (numberOfItems - 1) + centerCell.width + sideSpace * 2
+        return CGSize(width: width, height: normalCell.height)
+    }
+
+    open override func prepare() {
+        super.prepare()
+
+        guard let collectionView = collectionView else { return }
+        let numberOfItems = collectionView.numberOfItems(inSection: 0)
+        currentVisibleRect = collectionView.bounds
+        self.layoutInformation = (0..<numberOfItems).map {
+            UICollectionViewLayoutAttributes(forCellWith: IndexPath(item: $0, section: 0))
+        }
+        updateLayout(for: currentVisibleRect)
+    }
+
+    open override func layoutAttributesForItem(at indexPath: IndexPath) -> UICollectionViewLayoutAttributes? {
+        return layoutInformation?[indexPath.item]
+    }
+
+    open override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
+        return layoutInformation?.filter { $0.frame.intersects(rect) }
+    }
+
+    open override func shouldInvalidateLayout(forBoundsChange newBounds: CGRect) -> Bool {
+        currentVisibleRect = newBounds
+        return !self.isIgnoringBoundsChange
+    }
+
+    func updateLayout(for bounds: CGRect) {
+        let deltaX = centerCell.width - normalCell.width
+        let deltaY = centerCell.height - normalCell.height
+        let leftSideInset = (bounds.width - centerCell.width) / 2
+
+        for attribute in layoutInformation ?? [] {
+            let normalCellOffsetX = leftSideInset + CGFloat(attribute.indexPath.item) * normalCell.width
+            let normalCellOffsetY = (bounds.height - normalCell.height) / 2
+
+            let distanceBetweenCellAndBoundCenters = normalCellOffsetX - bounds.midX + centerCell.width / 2
+            // normalizedCenterScale has range (- 1 ... 1), 0 - cell placed at center of bounds
+            let normalizedCenterScale = distanceBetweenCellAndBoundCenters / normalCell.width
+
+            let isCenterCell = abs(normalizedCenterScale) < 1
+            let isNormalCellOnRightOfCenter = normalizedCenterScale > 0 && !isCenterCell
+            let isNormalCellOnLeftOfCenter = normalizedCenterScale < 0 && !isCenterCell
+
+            if isCenterCell {
+                let incrementX = (1 - abs(normalizedCenterScale)) * deltaX
+                let incrementY = (1 - abs(normalizedCenterScale)) * deltaY
+                let offsetX = normalizedCenterScale > 0 ? deltaX - incrementX : 0
+                let offsetY = -incrementY / 2
+
+                attribute.frame = CGRect(x: normalCellOffsetX + offsetX,
+                                         y: normalCellOffsetY + offsetY,
+                                         width: normalCell.width + incrementX,
+                                         height: normalCell.height + incrementY)
+            } else if isNormalCellOnRightOfCenter {
+                attribute.frame = CGRect(x: normalCellOffsetX + deltaX,
+                                         y: normalCellOffsetY,
+                                         width: normalCell.width,
+                                         height: normalCell.height)
+            } else if isNormalCellOnLeftOfCenter {
+                attribute.frame = CGRect(x: normalCellOffsetX,
+                                         y: normalCellOffsetY,
+                                         width: normalCell.width,
+                                         height: normalCell.height)
+            }
+
+        }
+    }
+
+    open override func targetContentOffset(forProposedContentOffset proposedContentOffset: CGPoint) -> CGPoint {
+        if self.proposedContentOffset.x != CGFloat(NSNotFound) {
+            let proposedContentOffset = self.proposedContentOffset
+            self.proposedContentOffset = defaultProposedContentOffset
+            return proposedContentOffset
+        } else {
+            return proposedContentOffset
+        }
+    }
+}
@@ -0,0 +1,163 @@
+//
+//  ScaledCenterCarouselPaginator.swift
+//  ScaledCenterCarousel
+//
+//  Created by Yuriy Tolstoguzov on 10/19/19.
+//  Copyright © 2019 Yuriy Tolstoguzov. All rights reserved.
+//
+
+import UIKit
+
+enum NearestPointDirection {
+    case any
+    case left
+    case right
+}
+
+public protocol ScaledCenterCarouselPaginatorDelegate {
+    func carousel(_ collectionView: UICollectionView, didSelectElementAt index: UInt)
+    func carousel(_ collectionView: UICollectionView, didScrollTo visibleCells: [UICollectionViewCell])
+}
+
+public protocol ScaledCenterCarouselDataSource: UICollectionViewDataSource {
+    var selectedIndex: UInt { get set }
+}
+
+open class ScaledCenterCarouselPaginator: NSObject, UICollectionViewDelegate {
+
+    public let delegate: ScaledCenterCarouselPaginatorDelegate
+    public var selectedIndex = UInt(0)
+
+    private var scrollVelocity = CGFloat(0)
+    private var collectionView: UICollectionView
+    private var collectionViewCenter: CGFloat {
+        return collectionView.bounds.width / 2
+    }
+
+    public init(collectionView: UICollectionView, delegate: ScaledCenterCarouselPaginatorDelegate) {
+        self.collectionView = collectionView
+        self.delegate = delegate
+        super.init()
+        self.collectionView.delegate = self
+    }
+
+    // MARK: - UICollectionViewDelegate
+
+    public func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
+        guard selectedIndex != UInt.max else { return }
+
+        let previousSelectedIndex = selectedIndex
+        if let dataSource = collectionView.dataSource as? ScaledCenterCarouselDataSource {
+            dataSource.selectedIndex = selectedIndex
+        }
+        selectedIndex = UInt.max
+        self.reloadCell(at: IndexPath(item: Int(previousSelectedIndex), section: 0),
+                        withSelectedState: false)
+    }
+
+    public func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
+        if let dataSource = collectionView.dataSource as? ScaledCenterCarouselDataSource {
+            dataSource.selectedIndex = selectedIndex
+        }
+
+        self.reloadCell(at: IndexPath(item: Int(selectedIndex), section: 0), withSelectedState: false)
+
+        delegate.carousel(collectionView, didScrollTo: collectionView.visibleCells)
+    }
+
+    public func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
+        collectionView.deselectItem(at: indexPath, animated: true)
+        self.scrollViewWillBeginDragging(collectionView)
+
+        selectedIndex = UInt(indexPath.item)
+        delegate.carousel(collectionView, didSelectElementAt: selectedIndex)
+
+        if let layout = collectionView.collectionViewLayout as? ScaledCenterCarouselLayout {
+            let xPosition = CGFloat(selectedIndex) * layout.normalCell.width
+            layout.isIgnoringBoundsChange = true
+            collectionView.setContentOffset(CGPoint(x: xPosition, y: 0), animated: true)
+            layout.isIgnoringBoundsChange = false
+            DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
+                self.scrollViewDidEndDecelerating(collectionView)
+            }
+        }
+    }
+
+    // MARK: - Utility methods
+
+    private func offset(forCenterX centerX: CGFloat, withDirection direction: NearestPointDirection) -> CGPoint {
+        let leftNearestCenter = nearestLeftCenter(forCenterX: centerX)
+        let leftCenterIndex = leftNearestCenter.index
+        let leftCenter = leftNearestCenter.distance
+        let rightNearestCenter = nearestRightCenter(forCenterX: centerX)
+        let rightCenterIndex = rightNearestCenter.index
+        let rightCenter = rightNearestCenter.distance
+
+        var nearestItemIndex = UInt(NSNotFound)
+        switch direction {
+        case .any:
+            if (leftCenter > rightCenter) {
+                nearestItemIndex = rightCenterIndex
+            }
+            else {
+                nearestItemIndex = leftCenterIndex
+            }
+        case .left:
+            nearestItemIndex = leftCenterIndex
+        case .right:
+            nearestItemIndex = rightCenterIndex
+        }
+
+        selectedIndex = nearestItemIndex
+
+        if selectedIndex != NSNotFound {
+            delegate.carousel(collectionView, didSelectElementAt: selectedIndex)
+        }
+
+        if let layout = collectionView.collectionViewLayout as? ScaledCenterCarouselLayout {
+            return CGPoint(x: CGFloat(nearestItemIndex) * layout.normalCell.width, y: 0)
+        } else {
+            return .zero
+        }
+    }
+
+    public func scrollViewWillEndDragging(_ scrollView: UIScrollView,
+                                          withVelocity velocity: CGPoint,
+                                          targetContentOffset: UnsafeMutablePointer<CGPoint>) {
+        scrollVelocity = velocity.x
+        var direction: NearestPointDirection
+        if scrollVelocity == 0 {
+            direction = .any
+        } else if scrollVelocity < 0 {
+            direction = .left
+        } else {
+            direction = .right
+        }
+        targetContentOffset.pointee = offset(forCenterX: targetContentOffset.pointee.x + collectionViewCenter,
+                                             withDirection: direction)
+    }
+
+    func nearestLeftCenter(forCenterX centerX: CGFloat) -> (index: UInt, distance: CGFloat) {
+        guard let layout = collectionView.collectionViewLayout as? ScaledCenterCarouselLayout else { return (0, 0) }
+
+        let nearestLeftElementIndex = (centerX - collectionViewCenter - layout.centerCell.width
+            + layout.normalCell.width) / layout.normalCell.width
+        let minimumLeftDistance = centerX - nearestLeftElementIndex * layout.normalCell.width - collectionView.bounds.width / 2 - layout.centerCell.width + layout.normalCell.width
+        return (UInt(nearestLeftElementIndex), minimumLeftDistance)
+    }
+
+    func nearestRightCenter(forCenterX centerX: CGFloat) -> (index: UInt, distance: CGFloat) {
+        guard let layout = collectionView.collectionViewLayout as? ScaledCenterCarouselLayout else { return (0, 0) }
+
+        let nearestRightElementIndex = ceil(centerX - collectionViewCenter - layout.centerCell.width
+            + layout.normalCell.width) / layout.normalCell.width
+        let minimumRightDistance = nearestRightElementIndex * layout.normalCell.width + collectionViewCenter
+            - centerX - layout.centerCell.width + layout.normalCell.width
+        return (UInt(nearestRightElementIndex), minimumRightDistance)
+    }
+
+    func reloadCell(at indexPath: IndexPath, withSelectedState isSelected: Bool) {
+        let cell = collectionView.cellForItem(at: indexPath)
+        cell?.isSelected = isSelected
+    }
+}
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+</dict>
+</plist>
Author	SHA1	Message	Date
Yuriy Tolstoguzov	6357f86407	Added swift version to podspec file	2019-11-08 21:59:16 -08:00
Yuriy Tolstoguzov	b9e3c2c985	Updated Swift podspec to use separate tag from ObjC releases	2019-11-08 21:54:31 -08:00
Yuriy Tolstoguzov	87cd6ab0a6	Updated README.md to include information about Swift version	2019-11-08 21:51:27 -08:00
Yuriy Tolstoguzov	57ee163f44	Prepared podspec for Swift version	2019-11-08 21:41:14 -08:00
Yuriy Tolstoguzov	2184ae7b2f	Added pure Swift implementation of the carousel. Added an example for the Swift implementation	2019-11-04 21:54:00 -08:00
Yuriy Tolstoguzov	2d5798bd94	Updated travis configuration file	2019-10-19 15:37:05 -07:00
Yuriy Tolstoguzov	3626405815	Updated project files in Xcode 11.1	2019-10-19 14:48:22 -07:00
Yuriy Tolstoguzov	768feeb5e7	Added codebeat badge to README	2017-04-25 19:50:07 +03:00
Yuriy Tolstoguzov	973f63db6b	Update README.md	2017-04-25 11:38:26 +03:00
Yuriy Tolstoguzov	b3a8174e50	Added customization section to README	2017-04-25 11:34:43 +03:00
Yuriy Tolstoguzov	603200a174	Fixed Travis CI builds	2017-04-24 16:07:04 +03:00
Yuriy Tolstoguzov	ebfa2361dd	Updated README with Carthage installation instructions	2017-04-23 22:13:02 +03:00