Added an ability to block clicks on root when menu is opened

closes #1

library/src/main/java/com/yarolegovich/slidingrootnav/SlidingRootNav.java

@@ -8,6 +8,8 @@ public interface SlidingRootNav {
 
     boolean isMenuHidden();
 
+    boolean isMenuOpened();
+
     boolean isMenuLocked();
 
     void closeMenu();

library/src/main/java/com/yarolegovich/slidingrootnav/SlidingRootNavBuilder.java

@@ -59,6 +59,8 @@ public class SlidingRootNavBuilder {
 
     private boolean isMenuLocked;
 
+    private boolean isContentClickableWhenMenuOpened;
+
     private Bundle savedState;
 
     public SlidingRootNavBuilder(Activity activity) {
@@ -68,6 +70,7 @@ public class SlidingRootNavBuilder {
         this.dragStateListeners = new ArrayList<>();
         this.gravity = SlideGravity.LEFT;
         this.dragDistance = dpToPx(DEFAULT_DRAG_DIST_DP);
+        this.isContentClickableWhenMenuOpened = true;
     }
 
     public SlidingRootNavBuilder withMenuView(View view) {
@@ -110,6 +113,11 @@ public class SlidingRootNavBuilder {
         return this;
     }
 
+    public SlidingRootNavBuilder withContentClickableWhenMenuOpened(boolean clickable) {
+        isContentClickableWhenMenuOpened = clickable;
+        return this;
+    }
+
     public SlidingRootNavBuilder withDragDistance(int dp) {
         return withDragDistancePx(dpToPx(dp));
     }
@@ -196,6 +204,7 @@ public class SlidingRootNavBuilder {
         newRoot.setMaxDragDistance(dragDistance);
         newRoot.setGravity(gravity);
         newRoot.setRootView(oldRoot);
+        newRoot.setContentClickableWhenMenuOpened(isContentClickableWhenMenuOpened);
         for (DragListener l : dragListeners) {
             newRoot.addDragListener(l);
         }

library/src/main/java/com/yarolegovich/slidingrootnav/SlidingRootNavLayout.java

@@ -1,6 +1,7 @@
 package com.yarolegovich.slidingrootnav;
 
 import android.content.Context;
+import android.graphics.Rect;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.support.v4.view.ViewCompat;
@@ -25,10 +26,13 @@ public class SlidingRootNavLayout extends FrameLayout implements SlidingRootNav
     private static final String EXTRA_IS_OPENED = "extra_is_opened";
     private static final String EXTRA_SUPER = "extra_super";
 
+    private static final Rect tempRect = new Rect();
+
     private final float FLING_MIN_VELOCITY;
 
     private boolean isMenuLocked;
     private boolean isMenuHidden;
+    private boolean isContentClickableWhenMenuOpened;
 
     private RootTransformation rootTransformation;
     private View rootView;
@@ -58,7 +62,9 @@ public class SlidingRootNavLayout extends FrameLayout implements SlidingRootNav
 
     @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
-        return !isMenuLocked && dragHelper.shouldInterceptTouchEvent(ev);
+        return (!isMenuLocked
+            && dragHelper.shouldInterceptTouchEvent(ev))
+            || shouldBlockClick(ev);
     }
 
     @Override
@@ -106,6 +112,10 @@ public class SlidingRootNavLayout extends FrameLayout implements SlidingRootNav
         return isMenuHidden;
     }
 
+    @Override public boolean isMenuOpened() {
+        return !isMenuHidden;
+    }
+
     @Override
     public SlidingRootNavLayout getLayout() {
         return this;
@@ -145,6 +155,10 @@ public class SlidingRootNavLayout extends FrameLayout implements SlidingRootNav
         rootView = view;
     }
 
+    public void setContentClickableWhenMenuOpened(boolean contentClickableWhenMenuOpened) {
+        isContentClickableWhenMenuOpened = contentClickableWhenMenuOpened;
+    }
+
     public void setRootTransformation(RootTransformation transformation) {
         rootTransformation = transformation;
     }
@@ -178,6 +192,19 @@ public class SlidingRootNavLayout extends FrameLayout implements SlidingRootNav
         return dragProgress;
     }
 
+    private boolean shouldBlockClick(MotionEvent event) {
+        if (isContentClickableWhenMenuOpened) {
+            return false;
+        }
+        if (rootView != null && isMenuOpened()) {
+            rootView.getHitRect(tempRect);
+            if (tempRect.contains((int) event.getX(), (int) event.getY())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     private void notifyDrag() {
         for (DragListener listener : dragListeners) {
             listener.onDrag(dragProgress);
@@ -260,7 +287,7 @@ public class SlidingRootNavLayout extends FrameLayout implements SlidingRootNav
                 notifyDragStart();
             } else if (dragState != ViewDragHelper.STATE_IDLE && state == ViewDragHelper.STATE_IDLE) {
                 isMenuHidden = calculateIsMenuHidden();
-                notifyDragEnd(!isMenuHidden);
+                notifyDragEnd(isMenuOpened());
             }
             dragState = state;
         }