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| 1 // Copyright 2016 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; |
| 6 |
| 7 import android.annotation.TargetApi; |
| 8 import android.content.Context; |
| 9 import android.graphics.Rect; |
| 10 import android.os.Build; |
| 11 import android.view.View; |
| 12 import android.view.WindowInsets; |
| 13 |
| 14 /** |
| 15 * The purpose of this view is to store the system window insets (OSK, status ba
r) for |
| 16 * later use. |
| 17 */ |
| 18 public class InsetObserverView extends View { |
| 19 |
| 20 protected final Rect mWindowInsets; |
| 21 |
| 22 /** |
| 23 * Constructs a new {@link InsetObserverView} for the appropriate Android ve
rsion. |
| 24 * @param context The Context the view is running in, through which it can a
ccess the current |
| 25 * theme, resources, etc. |
| 26 * @return an instance of a InsetObserverView. |
| 27 */ |
| 28 public static InsetObserverView create(Context context) { |
| 29 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { |
| 30 return new InsetObserverView(context); |
| 31 } |
| 32 return new InsetObserverViewApi21(context); |
| 33 } |
| 34 |
| 35 /** |
| 36 * Creates an instance of {@link InsetObserverView}. |
| 37 * @param context The Context to create this {@link InsetObserverView} in. |
| 38 */ |
| 39 public InsetObserverView(Context context) { |
| 40 super(context); |
| 41 setVisibility(INVISIBLE); |
| 42 mWindowInsets = new Rect(); |
| 43 } |
| 44 |
| 45 /** |
| 46 * Returns the left {@link WindowInsets} in pixels. |
| 47 */ |
| 48 public int getSystemWindowInsetsLeft() { |
| 49 return mWindowInsets.left; |
| 50 } |
| 51 |
| 52 /** |
| 53 * Returns the top {@link WindowInsets} in pixels. |
| 54 */ |
| 55 public int getSystemWindowInsetsTop() { |
| 56 return mWindowInsets.top; |
| 57 } |
| 58 |
| 59 /** |
| 60 * Returns the right {@link WindowInsets} in pixels. |
| 61 */ |
| 62 public int getSystemWindowInsetsRight() { |
| 63 return mWindowInsets.right; |
| 64 } |
| 65 |
| 66 /** |
| 67 * Returns the bottom {@link WindowInsets} in pixels. |
| 68 */ |
| 69 public int getSystemWindowInsetsBottom() { |
| 70 return mWindowInsets.bottom; |
| 71 } |
| 72 |
| 73 @SuppressWarnings("deprecation") |
| 74 @Override |
| 75 protected boolean fitSystemWindows(Rect insets) { |
| 76 // For Lollipop and above, onApplyWindowInsets will set the insets. |
| 77 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { |
| 78 mWindowInsets.set(insets.left, insets.top, insets.right, insets.bott
om); |
| 79 } |
| 80 return false; |
| 81 } |
| 82 |
| 83 @TargetApi(Build.VERSION_CODES.LOLLIPOP) |
| 84 private static class InsetObserverViewApi21 extends InsetObserverView { |
| 85 /** |
| 86 * Creates an instance of {@link InsetObserverView} for Android versions
L and above. |
| 87 * @param context The Context to create this {@link InsetObserverView} i
n. |
| 88 */ |
| 89 InsetObserverViewApi21(Context context) { |
| 90 super(context); |
| 91 } |
| 92 |
| 93 @Override |
| 94 public WindowInsets onApplyWindowInsets(WindowInsets insets) { |
| 95 mWindowInsets.set( |
| 96 insets.getSystemWindowInsetLeft(), |
| 97 insets.getSystemWindowInsetTop(), |
| 98 insets.getSystemWindowInsetRight(), |
| 99 insets.getSystemWindowInsetBottom()); |
| 100 return insets; |
| 101 } |
| 102 } |
| 103 } |
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