1 files changed, 83 insertions, 7 deletions

diff --git a/src/com/android/launcher3/BaseContainerView.java b/src/com/android/launcher3/BaseContainerView.java
index 96942ee6f..b7321d94f 100644
--- a/src/com/android/launcher3/BaseContainerView.java
+++ b/src/com/android/launcher3/BaseContainerView.java
@@ -16,17 +16,24 @@
 
 package com.android.launcher3;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.res.TypedArray;
+import android.graphics.Point;
+import android.graphics.PointF;
+import android.graphics.Rect;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.InsetDrawable;
 import android.util.AttributeSet;
+import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.widget.FrameLayout;
 
 import com.android.launcher3.allapps.AllAppsContainerView;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.util.TransformingTouchDelegate;
 
 /**
  * A base container view, which supports resizing.
@@ -39,12 +46,16 @@ public abstract class BaseContainerView extends FrameLayout
     protected int mContainerPaddingTop;
     protected int mContainerPaddingBottom;
 
-    private InsetDrawable mRevealDrawable;
     protected final Drawable mBaseDrawable;
+    private final Rect mBgPaddingRect = new Rect();
 
     private View mRevealView;
     private View mContent;
 
+    private TransformingTouchDelegate mTouchDelegate;
+
+    private final PointF mLastTouchDownPosPx = new PointF(-1.0f, -1.0f);
+
     public BaseContainerView(Context context) {
         this(context, null);
     }
@@ -72,6 +83,12 @@ public abstract class BaseContainerView extends FrameLayout
 
         DeviceProfile grid = Launcher.getLauncher(getContext()).getDeviceProfile();
         grid.addLauncherLayoutChangedListener(this);
+
+        View touchDelegateTargetView = getTouchDelegateTargetView();
+        if (touchDelegateTargetView != null) {
+            mTouchDelegate = new TransformingTouchDelegate(touchDelegateTargetView);
+            ((View) touchDelegateTargetView.getParent()).setTouchDelegate(mTouchDelegate);
+        }
     }
 
     @Override
@@ -93,10 +110,36 @@ public abstract class BaseContainerView extends FrameLayout
     }
 
     @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+        getRevealView().getBackground().getPadding(mBgPaddingRect);
+
+        View touchDelegateTargetView = getTouchDelegateTargetView();
+        if (touchDelegateTargetView != null) {
+            mTouchDelegate.setBounds(
+                    touchDelegateTargetView.getLeft() - mBgPaddingRect.left,
+                    touchDelegateTargetView.getTop() - mBgPaddingRect.top,
+                    touchDelegateTargetView.getRight() + mBgPaddingRect.right,
+                    touchDelegateTargetView.getBottom() + mBgPaddingRect.bottom);
+        }
+    }
+
+    @Override
     public void onLauncherLayoutChanged() {
         updatePaddings();
     }
 
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        return handleTouchEvent(ev);
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        return handleTouchEvent(ev);
+    }
+
     public void setRevealDrawableColor(int color) {
         ((ColorDrawable) mBaseDrawable).setColor(color);
     }
@@ -130,14 +173,47 @@ public abstract class BaseContainerView extends FrameLayout
             }
         }
 
-        mRevealDrawable = new InsetDrawable(mBaseDrawable,
+        InsetDrawable revealDrawable = new InsetDrawable(mBaseDrawable,
                 mContainerPaddingLeft, mContainerPaddingTop, mContainerPaddingRight,
                 mContainerPaddingBottom);
-        mRevealView.setBackground(mRevealDrawable);
-        if (FeatureFlags.LAUNCHER3_ALL_APPS_PULL_UP && this instanceof AllAppsContainerView) {
-            // Skip updating the content background
-        } else {
-            mContent.setBackground(mRevealDrawable);
+        mRevealView.setBackground(revealDrawable);
+        mContent.setBackground(revealDrawable);
+    }
+
+    /**
+     * Handles the touch events that shows the workspace when clicking outside the bounds of the
+     * touch delegate target view.
+     */
+    private boolean handleTouchEvent(MotionEvent ev) {
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                // Check if the touch is outside touch delegate target view
+                View touchDelegateTargetView = getTouchDelegateTargetView();
+                float leftBoundPx = touchDelegateTargetView.getLeft();
+                if (ev.getX() < leftBoundPx ||
+                        ev.getX() > (touchDelegateTargetView.getWidth() + leftBoundPx)) {
+                    mLastTouchDownPosPx.set((int) ev.getX(), (int) ev.getY());
+                }
+                break;
+            case MotionEvent.ACTION_UP:
+                if (mLastTouchDownPosPx.x > -1) {
+                    ViewConfiguration viewConfig = ViewConfiguration.get(getContext());
+                    float dx = ev.getX() - mLastTouchDownPosPx.x;
+                    float dy = ev.getY() - mLastTouchDownPosPx.y;
+                    float distance = PointF.length(dx, dy);
+                    if (distance < viewConfig.getScaledTouchSlop()) {
+                        // The background was clicked, so just go home
+                        Launcher.getLauncher(getContext()).showWorkspace(true);
+                        return true;
+                    }
+                }
+                // Fall through
+            case MotionEvent.ACTION_CANCEL:
+                mLastTouchDownPosPx.set(-1, -1);
+                break;
         }
+        return false;
     }
+
+    public abstract View getTouchDelegateTargetView();
 }