services/java/com/android/server/wm/DisplayContent.java - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2012 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.server.wm;

 import android.graphics.Rect;
 import android.view.Display;
 import android.view.DisplayInfo;

 import java.io.PrintWriter;
 import java.util.ArrayList;

 class DisplayContentList extends ArrayList<DisplayContent> {
 }

 /**
  * Utility class for keeping track of the WindowStates and other pertinent contents of a
  * particular Display.
  *
  * IMPORTANT: No method from this class should ever be used without holding
  * WindowManagerService.mWindowMap.
  */
 class DisplayContent {
 //    private final static String TAG = "DisplayContent";

     /** Unique identifier of this stack. */
     private final int mDisplayId;

     /** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element
      * from mDisplayWindows; */
     private WindowList mWindows = new WindowList();

     // This protects the following display size properties, so that
     // getDisplaySize() doesn't need to acquire the global lock.  This is
     // needed because the window manager sometimes needs to use ActivityThread
     // while it has its global state locked (for example to load animation
     // resources), but the ActivityThread also needs get the current display
     // size sometimes when it has its package lock held.
     //
     // These will only be modified with both mWindowMap and mDisplaySizeLock
     // held (in that order) so the window manager doesn't need to acquire this
     // lock when needing these values in its normal operation.
     final Object mDisplaySizeLock = new Object();
     int mInitialDisplayWidth = 0;
     int mInitialDisplayHeight = 0;
     int mInitialDisplayDensity = 0;
     int mBaseDisplayWidth = 0;
     int mBaseDisplayHeight = 0;
     int mBaseDisplayDensity = 0;
     private final DisplayInfo mDisplayInfo = new DisplayInfo();
     private final Display mDisplay;

     // Accessed directly by all users.
     boolean layoutNeeded;
     int pendingLayoutChanges;
     final boolean isDefaultDisplay;

     /**
      * Window tokens that are in the process of exiting, but still
      * on screen for animations.
      */
     final ArrayList<WindowToken> mExitingTokens = new ArrayList<WindowToken>();

     /**
      * Application tokens that are in the process of exiting, but still
      * on screen for animations.
      */
     final AppTokenList mExitingAppTokens = new AppTokenList();

     private ArrayList<StackBox> mStackBoxes = new ArrayList<StackBox>();

     /**
      * Sorted most recent at top, oldest at [0].
      */
     ArrayList<Task> mTmpTasks = new ArrayList<Task>();

     /**
      * @param display May not be null.
      */
     DisplayContent(Display display) {
         mDisplay = display;
         mDisplayId = display.getDisplayId();
         display.getDisplayInfo(mDisplayInfo);
         isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY;
     }

     int getDisplayId() {
         return mDisplayId;
     }

     WindowList getWindowList() {
         return mWindows;
     }

     Display getDisplay() {
         return mDisplay;
     }

     DisplayInfo getDisplayInfo() {
         return mDisplayInfo;
     }

     /**
      * Retrieve the tasks on this display in stack order from the topmost TaskStack down.
      * Note that the order of TaskStacks in the same StackBox is defined within StackBox.
      * @return All the Tasks, in order, on this display.
      */
     ArrayList<Task> getTasks() {
         mTmpTasks.clear();
         int numBoxes = mStackBoxes.size();
         for (int boxNdx = 0; boxNdx < numBoxes; ++boxNdx) {
             mTmpTasks.addAll(mStackBoxes.get(boxNdx).getTasks());
         }
         return mTmpTasks;
     }

     public void updateDisplayInfo() {
         mDisplay.getDisplayInfo(mDisplayInfo);
     }

     /** @return The number of tokens in all of the Tasks on this display. */
     int numTokens() {
         getTasks();
         int count = 0;
         for (int taskNdx = mTmpTasks.size() - 1; taskNdx >= 0; --taskNdx) {
             count += mTmpTasks.get(taskNdx).mAppTokens.size();
         }
         return count;
     }

     /** Refer to {@link WindowManagerService#createStack(int, int, int, float)} */
     TaskStack createStack(int stackId, int relativeStackId, int position, float weight) {
         TaskStack newStack = null;
         if (mStackBoxes.isEmpty()) {
             StackBox newBox = new StackBox(this, new Rect(0, 0, mDisplayInfo.logicalWidth,
                     mDisplayInfo.logicalHeight));
             mStackBoxes.add(newBox);
             newStack = new TaskStack(stackId, newBox);
             newBox.mStack = newStack;
         } else {
             int stackBoxNdx;
             for (stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
                 final StackBox box = mStackBoxes.get(stackBoxNdx);
                 if (position == StackBox.TASK_STACK_GOES_OVER
                         || position == StackBox.TASK_STACK_GOES_UNDER) {
                     // Position indicates a new box is added at top level only.
                     if (box.contains(relativeStackId)) {
                         final int offset = position == StackBox.TASK_STACK_GOES_OVER ? 1 : 0;
                         StackBox newBox = new StackBox(this, box.mBounds);
                         newStack = new TaskStack(stackId, newBox);
                         newBox.mStack = newStack;
                         mStackBoxes.add(stackBoxNdx + offset, newBox);
                         break;
                     }
                 } else {
                     // Remaining position values indicate a box must be split.
                     newStack = box.split(stackId, relativeStackId, position, weight);
                     if (newStack != null) {
                         break;
                     }
                 }
             }
             if (stackBoxNdx < 0) {
                 throw new IllegalArgumentException("createStack: stackId " + relativeStackId
                         + " not found.");
             }
         }
         return newStack;
     }

     /** Refer to {@link WindowManagerService#resizeStack(int, float)} */
     boolean resizeStack(int stackId, float weight) {
         int stackBoxNdx;
         for (stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
             final StackBox box = mStackBoxes.get(stackBoxNdx);
             if (box.resize(stackId, weight)) {
                 return true;
             }
         }
         return false;
     }

     /**
      * Reorder a StackBox within mStackBox. The StackBox to reorder is the one containing the
      * specified TaskStack.
      * @param stackId The TaskStack to reorder.
      * @param toTop Move to the top of all StackBoxes if true, to the bottom if false. Only the
      * topmost layer of StackBoxes, those in mStackBoxes can be reordered.
      */
     void moveStackBox(int stackId, boolean toTop) {
         for (int stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
             final StackBox box = mStackBoxes.get(stackBoxNdx);
             if (box.contains(stackId)) {
                 mStackBoxes.remove(box);
                 mStackBoxes.add(toTop ? mStackBoxes.size() : 0, box);
                 return;
             }
         }
     }

     public void dump(String prefix, PrintWriter pw) {
         pw.print(prefix); pw.print("Display: mDisplayId="); pw.println(mDisplayId);
         final String subPrefix = "  " + prefix;
         pw.print(subPrefix); pw.print("init="); pw.print(mInitialDisplayWidth); pw.print("x");
             pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity);
             pw.print("dpi");
             if (mInitialDisplayWidth != mBaseDisplayWidth
                     || mInitialDisplayHeight != mBaseDisplayHeight
                     || mInitialDisplayDensity != mBaseDisplayDensity) {
                 pw.print(" base=");
                 pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight);
                 pw.print(" "); pw.print(mBaseDisplayDensity); pw.print("dpi");
             }
             pw.print(" cur=");
             pw.print(mDisplayInfo.logicalWidth);
             pw.print("x"); pw.print(mDisplayInfo.logicalHeight);
             pw.print(" app=");
             pw.print(mDisplayInfo.appWidth);
             pw.print("x"); pw.print(mDisplayInfo.appHeight);
             pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth);
             pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight);
             pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth);
             pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight);
             pw.print(subPrefix); pw.print("layoutNeeded="); pw.println(layoutNeeded);
             for (int boxNdx = 0; boxNdx < mStackBoxes.size(); ++boxNdx) {
                 pw.print(prefix); pw.print("StackBox #"); pw.println(boxNdx);
                 mStackBoxes.get(boxNdx).dump(prefix + "  ", pw);
             }
             int ndx = numTokens();
             if (ndx > 0) {
                 pw.println();
                 pw.println("  Application tokens in Z order:");
                 getTasks();
                 for (int taskNdx = mTmpTasks.size() - 1; taskNdx >= 0; --taskNdx) {
                     AppTokenList tokens = mTmpTasks.get(taskNdx).mAppTokens;
                     for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx) {
                         final AppWindowToken wtoken = tokens.get(tokenNdx);
                         pw.print("  App #"); pw.print(ndx--);
                                 pw.print(' '); pw.print(wtoken); pw.println(":");
                         wtoken.dump(pw, "    ");
                     }
                 }
             }
             if (mExitingTokens.size() > 0) {
                 pw.println();
                 pw.println("  Exiting tokens:");
                 for (int i=mExitingTokens.size()-1; i>=0; i--) {
                     WindowToken token = mExitingTokens.get(i);
                     pw.print("  Exiting #"); pw.print(i);
                     pw.print(' '); pw.print(token);
                     pw.println(':');
                     token.dump(pw, "    ");
                 }
             }
             if (mExitingAppTokens.size() > 0) {
                 pw.println();
                 pw.println("  Exiting application tokens:");
                 for (int i=mExitingAppTokens.size()-1; i>=0; i--) {
                     WindowToken token = mExitingAppTokens.get(i);
                     pw.print("  Exiting App #"); pw.print(i);
                       pw.print(' '); pw.print(token);
                       pw.println(':');
                       token.dump(pw, "    ");
                 }
             }
         pw.println();
     }
 }
	/*
	* Copyright (C) 2012 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.server.wm;

	import android.graphics.Rect;
	import android.view.Display;
	import android.view.DisplayInfo;

	import java.io.PrintWriter;
	import java.util.ArrayList;

	class DisplayContentList extends ArrayList<DisplayContent> {
	}

	/**
	* Utility class for keeping track of the WindowStates and other pertinent contents of a
	* particular Display.
	*
	* IMPORTANT: No method from this class should ever be used without holding
	* WindowManagerService.mWindowMap.
	*/
	class DisplayContent {
	// private final static String TAG = "DisplayContent";

	/** Unique identifier of this stack. */
	private final int mDisplayId;

	/** Z-ordered (bottom-most first) list of all Window objects. Assigned to an element
	* from mDisplayWindows; */
	private WindowList mWindows = new WindowList();

	// This protects the following display size properties, so that
	// getDisplaySize() doesn't need to acquire the global lock. This is
	// needed because the window manager sometimes needs to use ActivityThread
	// while it has its global state locked (for example to load animation
	// resources), but the ActivityThread also needs get the current display
	// size sometimes when it has its package lock held.
	//
	// These will only be modified with both mWindowMap and mDisplaySizeLock
	// held (in that order) so the window manager doesn't need to acquire this
	// lock when needing these values in its normal operation.
	final Object mDisplaySizeLock = new Object();
	int mInitialDisplayWidth = 0;
	int mInitialDisplayHeight = 0;
	int mInitialDisplayDensity = 0;
	int mBaseDisplayWidth = 0;
	int mBaseDisplayHeight = 0;
	int mBaseDisplayDensity = 0;
	private final DisplayInfo mDisplayInfo = new DisplayInfo();
	private final Display mDisplay;

	// Accessed directly by all users.
	boolean layoutNeeded;
	int pendingLayoutChanges;
	final boolean isDefaultDisplay;

	/**
	* Window tokens that are in the process of exiting, but still
	* on screen for animations.
	*/
	final ArrayList<WindowToken> mExitingTokens = new ArrayList<WindowToken>();

	/**
	* Application tokens that are in the process of exiting, but still
	* on screen for animations.
	*/
	final AppTokenList mExitingAppTokens = new AppTokenList();

	private ArrayList<StackBox> mStackBoxes = new ArrayList<StackBox>();

	/**
	* Sorted most recent at top, oldest at [0].
	*/
	ArrayList<Task> mTmpTasks = new ArrayList<Task>();

	/**
	* @param display May not be null.
	*/
	DisplayContent(Display display) {
	mDisplay = display;
	mDisplayId = display.getDisplayId();
	display.getDisplayInfo(mDisplayInfo);
	isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY;
	}

	int getDisplayId() {
	return mDisplayId;
	}

	WindowList getWindowList() {
	return mWindows;
	}

	Display getDisplay() {
	return mDisplay;
	}

	DisplayInfo getDisplayInfo() {
	return mDisplayInfo;
	}

	/**
	* Retrieve the tasks on this display in stack order from the topmost TaskStack down.
	* Note that the order of TaskStacks in the same StackBox is defined within StackBox.
	* @return All the Tasks, in order, on this display.
	*/
	ArrayList<Task> getTasks() {
	mTmpTasks.clear();
	int numBoxes = mStackBoxes.size();
	for (int boxNdx = 0; boxNdx < numBoxes; ++boxNdx) {
	mTmpTasks.addAll(mStackBoxes.get(boxNdx).getTasks());
	}
	return mTmpTasks;
	}

	public void updateDisplayInfo() {
	mDisplay.getDisplayInfo(mDisplayInfo);
	}

	/** @return The number of tokens in all of the Tasks on this display. */
	int numTokens() {
	getTasks();
	int count = 0;
	for (int taskNdx = mTmpTasks.size() - 1; taskNdx >= 0; --taskNdx) {
	count += mTmpTasks.get(taskNdx).mAppTokens.size();
	}
	return count;
	}

	/** Refer to {@link WindowManagerService#createStack(int, int, int, float)} */
	TaskStack createStack(int stackId, int relativeStackId, int position, float weight) {
	TaskStack newStack = null;
	if (mStackBoxes.isEmpty()) {
	StackBox newBox = new StackBox(this, new Rect(0, 0, mDisplayInfo.logicalWidth,
	mDisplayInfo.logicalHeight));
	mStackBoxes.add(newBox);
	newStack = new TaskStack(stackId, newBox);
	newBox.mStack = newStack;
	} else {
	int stackBoxNdx;
	for (stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
	final StackBox box = mStackBoxes.get(stackBoxNdx);
	if (position == StackBox.TASK_STACK_GOES_OVER
	\|\| position == StackBox.TASK_STACK_GOES_UNDER) {
	// Position indicates a new box is added at top level only.
	if (box.contains(relativeStackId)) {
	final int offset = position == StackBox.TASK_STACK_GOES_OVER ? 1 : 0;
	StackBox newBox = new StackBox(this, box.mBounds);
	newStack = new TaskStack(stackId, newBox);
	newBox.mStack = newStack;
	mStackBoxes.add(stackBoxNdx + offset, newBox);
	break;
	}
	} else {
	// Remaining position values indicate a box must be split.
	newStack = box.split(stackId, relativeStackId, position, weight);
	if (newStack != null) {
	break;
	}
	}
	}
	if (stackBoxNdx < 0) {
	throw new IllegalArgumentException("createStack: stackId " + relativeStackId
	+ " not found.");
	}
	}
	return newStack;
	}

	/** Refer to {@link WindowManagerService#resizeStack(int, float)} */
	boolean resizeStack(int stackId, float weight) {
	int stackBoxNdx;
	for (stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
	final StackBox box = mStackBoxes.get(stackBoxNdx);
	if (box.resize(stackId, weight)) {
	return true;
	}
	}
	return false;
	}

	/**
	* Reorder a StackBox within mStackBox. The StackBox to reorder is the one containing the
	* specified TaskStack.
	* @param stackId The TaskStack to reorder.
	* @param toTop Move to the top of all StackBoxes if true, to the bottom if false. Only the
	* topmost layer of StackBoxes, those in mStackBoxes can be reordered.
	*/
	void moveStackBox(int stackId, boolean toTop) {
	for (int stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
	final StackBox box = mStackBoxes.get(stackBoxNdx);
	if (box.contains(stackId)) {
	mStackBoxes.remove(box);
	mStackBoxes.add(toTop ? mStackBoxes.size() : 0, box);
	return;
	}
	}
	}

	public void dump(String prefix, PrintWriter pw) {
	pw.print(prefix); pw.print("Display: mDisplayId="); pw.println(mDisplayId);
	final String subPrefix = " " + prefix;
	pw.print(subPrefix); pw.print("init="); pw.print(mInitialDisplayWidth); pw.print("x");
	pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity);
	pw.print("dpi");
	if (mInitialDisplayWidth != mBaseDisplayWidth
	\|\| mInitialDisplayHeight != mBaseDisplayHeight
	\|\| mInitialDisplayDensity != mBaseDisplayDensity) {
	pw.print(" base=");
	pw.print(mBaseDisplayWidth); pw.print("x"); pw.print(mBaseDisplayHeight);
	pw.print(" "); pw.print(mBaseDisplayDensity); pw.print("dpi");
	}
	pw.print(" cur=");
	pw.print(mDisplayInfo.logicalWidth);
	pw.print("x"); pw.print(mDisplayInfo.logicalHeight);
	pw.print(" app=");
	pw.print(mDisplayInfo.appWidth);
	pw.print("x"); pw.print(mDisplayInfo.appHeight);
	pw.print(" rng="); pw.print(mDisplayInfo.smallestNominalAppWidth);
	pw.print("x"); pw.print(mDisplayInfo.smallestNominalAppHeight);
	pw.print("-"); pw.print(mDisplayInfo.largestNominalAppWidth);
	pw.print("x"); pw.println(mDisplayInfo.largestNominalAppHeight);
	pw.print(subPrefix); pw.print("layoutNeeded="); pw.println(layoutNeeded);
	for (int boxNdx = 0; boxNdx < mStackBoxes.size(); ++boxNdx) {
	pw.print(prefix); pw.print("StackBox #"); pw.println(boxNdx);
	mStackBoxes.get(boxNdx).dump(prefix + " ", pw);
	}
	int ndx = numTokens();
	if (ndx > 0) {
	pw.println();
	pw.println(" Application tokens in Z order:");
	getTasks();
	for (int taskNdx = mTmpTasks.size() - 1; taskNdx >= 0; --taskNdx) {
	AppTokenList tokens = mTmpTasks.get(taskNdx).mAppTokens;
	for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx) {
	final AppWindowToken wtoken = tokens.get(tokenNdx);
	pw.print(" App #"); pw.print(ndx--);
	pw.print(' '); pw.print(wtoken); pw.println(":");
	wtoken.dump(pw, " ");
	}
	}
	}
	if (mExitingTokens.size() > 0) {
	pw.println();
	pw.println(" Exiting tokens:");
	for (int i=mExitingTokens.size()-1; i>=0; i--) {
	WindowToken token = mExitingTokens.get(i);
	pw.print(" Exiting #"); pw.print(i);
	pw.print(' '); pw.print(token);
	pw.println(':');
	token.dump(pw, " ");
	}
	}
	if (mExitingAppTokens.size() > 0) {
	pw.println();
	pw.println(" Exiting application tokens:");
	for (int i=mExitingAppTokens.size()-1; i>=0; i--) {
	WindowToken token = mExitingAppTokens.get(i);
	pw.print(" Exiting App #"); pw.print(i);
	pw.print(' '); pw.print(token);
	pw.println(':');
	token.dump(pw, " ");
	}
	}
	pw.println();
	}
	}