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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 package org.chromium.chrome.browser.coordinator; |
| 6 |
| 7 import android.content.Context; |
| 8 import android.os.Build; |
| 9 import android.support.design.widget.CoordinatorLayout; |
| 10 import android.util.AttributeSet; |
| 11 import android.view.MotionEvent; |
| 12 import android.view.PointerIcon; |
| 13 import android.view.View; |
| 14 |
| 15 /** |
| 16 * This class overrides {@link onResolvePointerIcon} method to correctly determi
ne the pointer icon |
| 17 * from a mouse motion event. This is needed because the default android impl do
es not consider |
| 18 * view visibility. |
| 19 */ |
| 20 public class CoordinatorLayoutForPointer extends CoordinatorLayout { |
| 21 public CoordinatorLayoutForPointer(Context context, AttributeSet attrs) { |
| 22 super(context, attrs); |
| 23 } |
| 24 |
| 25 private boolean isWithinBoundOfView(int x, int y, View view) { |
| 26 return ((x >= view.getLeft() && x <= view.getRight()) |
| 27 && (y >= view.getTop() && y <= view.getBottom())); |
| 28 } |
| 29 |
| 30 @Override |
| 31 public PointerIcon onResolvePointerIcon(MotionEvent event, int pointerIndex)
{ |
| 32 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return null; |
| 33 |
| 34 final int x = (int) event.getX(pointerIndex); |
| 35 final int y = (int) event.getY(pointerIndex); |
| 36 final int childrenCount = getChildCount(); |
| 37 for (int i = childrenCount - 1; i >= 0; --i) { |
| 38 if (getChildAt(i).getVisibility() != VISIBLE) continue; |
| 39 if (isWithinBoundOfView(x, y, getChildAt(i))) { |
| 40 return getChildAt(i).onResolvePointerIcon(event, pointerIndex); |
| 41 } |
| 42 } |
| 43 return super.onResolvePointerIcon(event, pointerIndex); |
| 44 } |
| 45 } |
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