722285e199
Tell the display manager whenever a given logical display contains interesting windows. If so, then the display manager arranges to show that content on a physical display, otherwise it ignores the logical display and makes its associated primary physical display mirror the default display. Assign DisplayContents when Displays are added, remove them when Displays are removed, and update the DisplayInfo when Displays change. Change-Id: I36e08ec538055acabe1e24cdd12c40de4e47a158
131 lines
4.7 KiB
Java
131 lines
4.7 KiB
Java
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.wm;
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import android.os.RemoteCallbackList;
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import android.view.Display;
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import android.view.DisplayInfo;
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import android.view.IDisplayContentChangeListener;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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class DisplayContentList extends ArrayList<DisplayContent> {
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}
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/**
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* Utility class for keeping track of the WindowStates and other pertinent contents of a
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* particular Display.
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*
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* IMPORTANT: No method from this class should ever be used without holding
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* WindowManagerService.mWindowMap.
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*/
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class DisplayContent {
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/** Unique identifier of this stack. */
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private final int mDisplayId;
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/** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element
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* from mDisplayWindows; */
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private WindowList mWindows = new WindowList();
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// Specification for magnifying the display content.
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MagnificationSpec mMagnificationSpec;
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// Callback for observing content changes on a display.
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RemoteCallbackList<IDisplayContentChangeListener> mDisplayContentChangeListeners;
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// This protects the following display size properties, so that
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// getDisplaySize() doesn't need to acquire the global lock. This is
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// needed because the window manager sometimes needs to use ActivityThread
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// while it has its global state locked (for example to load animation
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// resources), but the ActivityThread also needs get the current display
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// size sometimes when it has its package lock held.
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//
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// These will only be modified with both mWindowMap and mDisplaySizeLock
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// held (in that order) so the window manager doesn't need to acquire this
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// lock when needing these values in its normal operation.
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final Object mDisplaySizeLock = new Object();
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int mInitialDisplayWidth = 0;
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int mInitialDisplayHeight = 0;
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int mInitialDisplayDensity = 0;
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int mBaseDisplayWidth = 0;
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int mBaseDisplayHeight = 0;
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int mBaseDisplayDensity = 0;
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final DisplayInfo mDisplayInfo = new DisplayInfo();
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final Display mDisplay;
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// Accessed directly by all users.
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boolean layoutNeeded;
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int pendingLayoutChanges;
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final boolean isDefaultDisplay;
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DisplayContent(Display display) {
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mDisplay = display;
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mDisplayId = display.getDisplayId();
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display.getDisplayInfo(mDisplayInfo);
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isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY;
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}
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int getDisplayId() {
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return mDisplayId;
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}
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WindowList getWindowList() {
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return mWindows;
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}
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Display getDisplay() {
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return mDisplay;
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}
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DisplayInfo getDisplayInfo() {
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return mDisplayInfo;
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}
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public void updateDisplayInfo() {
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mDisplay.getDisplayInfo(mDisplayInfo);
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}
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public void dump(PrintWriter pw) {
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pw.print(" Display: mDisplayId="); pw.println(mDisplayId);
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pw.print(" init="); pw.print(mInitialDisplayWidth); pw.print("x");
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pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity);
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pw.print("dpi");
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if (mInitialDisplayWidth != mBaseDisplayWidth
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|| mInitialDisplayHeight != mBaseDisplayHeight
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|| mInitialDisplayDensity != mBaseDisplayDensity) {
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pw.print(" base=");
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pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight);
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pw.print(" "); pw.print(mBaseDisplayDensity); pw.print("dpi");
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}
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pw.print(" cur=");
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pw.print(mDisplayInfo.logicalWidth);
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pw.print("x"); pw.print(mDisplayInfo.logicalHeight);
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pw.print(" app=");
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pw.print(mDisplayInfo.appWidth);
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pw.print("x"); pw.print(mDisplayInfo.appHeight);
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pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth);
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pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight);
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pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth);
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pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight);
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pw.print(" layoutNeeded="); pw.println(layoutNeeded);
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pw.print("magnificationSpec="); pw.println(mMagnificationSpec);
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pw.println();
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}
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}
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