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| 1 | +/* |
| 2 | + * Copyright (C) 2012 The Android Open Source Project |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package com.android.server.wm; |
| 18 | + |
| 19 | +import android.view.DisplayInfo; |
| 20 | + |
| 21 | +import java.io.PrintWriter; |
| 22 | +import java.util.ArrayList; |
| 23 | + |
| 24 | +class DisplayContentList extends ArrayList<DisplayContent> { |
| 25 | +} |
| 26 | + |
| 27 | +/** |
| 28 | + * Utility class for keeping track of the WindowStates and other pertinent contents of a |
| 29 | + * particular Display. |
| 30 | + * |
| 31 | + * IMPORTANT: No method from this class should ever be used without holding |
| 32 | + * WindowManagerService.mWindowMap. |
| 33 | + */ |
| 34 | +class DisplayContent { |
| 35 | + |
| 36 | + /** Unique identifier of this stack. */ |
| 37 | + private final int mDisplayId; |
| 38 | + |
| 39 | + /** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element |
| 40 | + * from mDisplayWindows; */ |
| 41 | + private WindowList mWindows = new WindowList(); |
| 42 | + |
| 43 | + |
| 44 | + // This protects the following display size properties, so that |
| 45 | + // getDisplaySize() doesn't need to acquire the global lock. This is |
| 46 | + // needed because the window manager sometimes needs to use ActivityThread |
| 47 | + // while it has its global state locked (for example to load animation |
| 48 | + // resources), but the ActivityThread also needs get the current display |
| 49 | + // size sometimes when it has its package lock held. |
| 50 | + // |
| 51 | + // These will only be modified with both mWindowMap and mDisplaySizeLock |
| 52 | + // held (in that order) so the window manager doesn't need to acquire this |
| 53 | + // lock when needing these values in its normal operation. |
| 54 | + final Object mDisplaySizeLock = new Object(); |
| 55 | + int mInitialDisplayWidth = 0; |
| 56 | + int mInitialDisplayHeight = 0; |
| 57 | + int mBaseDisplayWidth = 0; |
| 58 | + int mBaseDisplayHeight = 0; |
| 59 | + final DisplayInfo mDisplayInfo = new DisplayInfo(); |
| 60 | + |
| 61 | + DisplayContent(final int displayId) { |
| 62 | + mDisplayId = displayId; |
| 63 | + } |
| 64 | + |
| 65 | + int getDisplayId() { |
| 66 | + return mDisplayId; |
| 67 | + } |
| 68 | + |
| 69 | + WindowList getWindowList() { |
| 70 | + return mWindows; |
| 71 | + } |
| 72 | + |
| 73 | + DisplayInfo getDisplayInfo() { |
| 74 | + return mDisplayInfo; |
| 75 | + } |
| 76 | + |
| 77 | + public void dump(PrintWriter pw) { |
| 78 | + pw.print(" Display: mDisplayId="); pw.println(mDisplayId); |
| 79 | + pw.print(" init="); pw.print(mInitialDisplayWidth); pw.print("x"); |
| 80 | + pw.print(mInitialDisplayHeight); |
| 81 | + if (mInitialDisplayWidth != mBaseDisplayWidth |
| 82 | + || mInitialDisplayHeight != mBaseDisplayHeight) { |
| 83 | + pw.print(" base="); |
| 84 | + pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight); |
| 85 | + } |
| 86 | + if (mInitialDisplayWidth != mDisplayInfo.logicalWidth |
| 87 | + || mInitialDisplayHeight != mDisplayInfo.logicalHeight) { |
| 88 | + pw.print(" init="); pw.print(mInitialDisplayWidth); |
| 89 | + pw.print("x"); pw.print(mInitialDisplayHeight); |
| 90 | + } |
| 91 | + pw.print(" cur="); |
| 92 | + pw.print(mDisplayInfo.logicalWidth); |
| 93 | + pw.print("x"); pw.print(mDisplayInfo.logicalHeight); |
| 94 | + pw.print(" app="); |
| 95 | + pw.print(mDisplayInfo.appWidth); |
| 96 | + pw.print("x"); pw.print(mDisplayInfo.appHeight); |
| 97 | + pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth); |
| 98 | + pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight); |
| 99 | + pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth); |
| 100 | + pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight); |
| 101 | + pw.println(); |
| 102 | + } |
| 103 | +} |
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