/*
* 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 static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID;
import static com.android.server.wm.WindowManagerService.DEBUG_VISIBILITY;
import static com.android.server.wm.WindowManagerService.TAG;
import android.graphics.Rect;
import android.graphics.Region;
import android.util.Slog;
import android.view.Display;
import android.view.DisplayInfo;
import android.view.Surface;
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 {
/** 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 final 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;
Rect mBaseDisplayRect = new Rect();
Rect mContentRect = new Rect();
// 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>();
/** Array containing all TaskStacks on this display. Array
* is stored in display order with the current bottom stack at 0. */
private final ArrayList<TaskStack> mStacks = new ArrayList<TaskStack>();
/** A special TaskStack with id==HOME_STACK_ID that moves to the bottom whenever any TaskStack
* (except a future lockscreen TaskStack) moves to the top. */
private TaskStack mHomeStack = null;
/** Detect user tapping outside of current focused stack bounds .*/
StackTapPointerEventListener mTapDetector;
/** Detect user tapping outside of current focused stack bounds .*/
Region mTouchExcludeRegion = new Region();
/** Save allocating when calculating rects */
Rect mTmpRect = new Rect();
/** For gathering Task objects in order. */
final ArrayList<Task> mTmpTaskHistory = new ArrayList<Task>();
final WindowManagerService mService;
/** Remove this display when animation on it has completed. */
boolean mDeferredRemoval;
/**
* @param display May not be null.
* @param service You know.
*/
DisplayContent(Display display, WindowManagerService service) {
mDisplay = display;
mDisplayId = display.getDisplayId();
display.getDisplayInfo(mDisplayInfo);
isDefaultDisplay = mDisplayId == Display.DEFAULT_DISPLAY;
mService = service;
}
int getDisplayId() {
return mDisplayId;
}
WindowList getWindowList() {
return mWindows;
}
Display getDisplay() {
return mDisplay;
}
DisplayInfo getDisplayInfo() {
return mDisplayInfo;
}
/**
* Returns true if the specified UID has access to this display.
*/
public boolean hasAccess(int uid) {
return mDisplay.hasAccess(uid);
}
public boolean isPrivate() {
return (mDisplay.getFlags() & Display.FLAG_PRIVATE) != 0;
}
ArrayList<TaskStack> getStacks() {
return mStacks;
}
/**
* Retrieve the tasks on this display in stack order from the bottommost TaskStack up.
* @return All the Tasks, in order, on this display.
*/
ArrayList<Task> getTasks() {
mTmpTaskHistory.clear();
final int numStacks = mStacks.size();
for (int stackNdx = 0; stackNdx < numStacks; ++stackNdx) {
mTmpTaskHistory.addAll(mStacks.get(stackNdx).getTasks());
}
return mTmpTaskHistory;
}
TaskStack getHomeStack() {
if (mHomeStack == null && mDisplayId == Display.DEFAULT_DISPLAY) {
Slog.e(TAG, "getHomeStack: Returning null from this=" + this);
}
return mHomeStack;
}
void updateDisplayInfo() {
mDisplay.getDisplayInfo(mDisplayInfo);
for (int i = mStacks.size() - 1; i >= 0; --i) {
mStacks.get(i).updateDisplayInfo();
}
}
void getLogicalDisplayRect(Rect out) {
// Uses same calculation as in LogicalDisplay#configureDisplayInTransactionLocked.
final int orientation = mDisplayInfo.rotation;
boolean rotated = (orientation == Surface.ROTATION_90
|| orientation == Surface.ROTATION_270);
final int physWidth = rotated ? mBaseDisplayHeight : mBaseDisplayWidth;
final int physHeight = rotated ? mBaseDisplayWidth : mBaseDisplayHeight;
int width = mDisplayInfo.logicalWidth;
int left = (physWidth - width) / 2;
int height = mDisplayInfo.logicalHeight;
int top = (physHeight - height) / 2;
out.set(left, top, left + width, top + height);
}
/** Refer to {@link WindowManagerService#attachStack(int, int)} */
void attachStack(TaskStack stack) {
if (stack.mStackId == HOME_STACK_ID) {
if (mHomeStack != null) {
throw new IllegalArgumentException("attachStack: HOME_STACK_ID (0) not first.");
}
mHomeStack = stack;
}
mStacks.add(stack);
layoutNeeded = true;
}
void moveStack(TaskStack stack, boolean toTop) {
mStacks.remove(stack);
mStacks.add(toTop ? mStacks.size() : 0, stack);
}
void detachStack(TaskStack stack) {
mStacks.remove(stack);
}
/**
* Propagate the new bounds to all child stacks.
* @param contentRect The bounds to apply at the top level.
*/
void resize(Rect contentRect) {
mContentRect.set(contentRect);
}
int stackIdFromPoint(int x, int y) {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
final TaskStack stack = mStacks.get(stackNdx);
stack.getBounds(mTmpRect);
if (mTmpRect.contains(x, y)) {
return stack.mStackId;
}
}
return -1;
}
void setTouchExcludeRegion(TaskStack focusedStack) {
mTouchExcludeRegion.set(mBaseDisplayRect);
WindowList windows = getWindowList();
for (int i = windows.size() - 1; i >= 0; --i) {
final WindowState win = windows.get(i);
final TaskStack stack = win.getStack();
if (win.isVisibleLw() && stack != null && stack != focusedStack) {
mTmpRect.set(win.mVisibleFrame);
mTmpRect.intersect(win.mVisibleInsets);
mTouchExcludeRegion.op(mTmpRect, Region.Op.DIFFERENCE);
}
}
}
void switchUserStacks(int newUserId) {
final WindowList windows = getWindowList();
for (int i = 0; i < windows.size(); i++) {
final WindowState win = windows.get(i);
if (win.isHiddenFromUserLocked()) {
if (DEBUG_VISIBILITY) Slog.w(TAG, "user changing " + newUserId + " hiding "
+ win + ", attrs=" + win.mAttrs.type + ", belonging to "
+ win.mOwnerUid);
win.hideLw(false);
}
}
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
mStacks.get(stackNdx).switchUser(newUserId);
}
}
void resetAnimationBackgroundAnimator() {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
mStacks.get(stackNdx).resetAnimationBackgroundAnimator();
}
}
boolean animateDimLayers() {
boolean result = false;
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
result |= mStacks.get(stackNdx).animateDimLayers();
}
return result;
}
void resetDimming() {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
mStacks.get(stackNdx).resetDimmingTag();
}
}
boolean isDimming() {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
if (mStacks.get(stackNdx).isDimming()) {
return true;
}
}
return false;
}
void stopDimmingIfNeeded() {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
mStacks.get(stackNdx).stopDimmingIfNeeded();
}
}
void close() {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
mStacks.get(stackNdx).close();
}
}
boolean isAnimating() {
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
final TaskStack stack = mStacks.get(stackNdx);
if (stack.isAnimating()) {
return true;
}
}
return false;
}
void checkForDeferredActions() {
boolean animating = false;
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
final TaskStack stack = mStacks.get(stackNdx);
if (stack.isAnimating()) {
animating = true;
} else {
if (stack.mDeferDetach) {
mService.detachStackLocked(this, stack);
}
final ArrayList<Task> tasks = stack.getTasks();
for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) {
final Task task = tasks.get(taskNdx);
AppTokenList tokens = task.mAppTokens;
for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx) {
AppWindowToken wtoken = tokens.get(tokenNdx);
if (wtoken.mDeferRemoval) {
stack.mExitingAppTokens.remove(wtoken);
wtoken.mDeferRemoval = false;
mService.removeAppFromTaskLocked(wtoken);
}
}
if (task.mDeferRemoval) {
task.mDeferRemoval = false;
mService.removeTaskLocked(task);
}
}
}
}
if (!animating && mDeferredRemoval) {
mService.onDisplayRemoved(mDisplayId);
}
}
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("deferred="); pw.print(mDeferredRemoval);
pw.print(" layoutNeeded="); pw.println(layoutNeeded);
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
final TaskStack stack = mStacks.get(stackNdx);
pw.print(prefix); pw.print("mStacks[" + stackNdx + "]"); pw.println(stack.mStackId);
stack.dump(prefix + " ", pw);
}
pw.println();
pw.println(" Application tokens in top down Z order:");
int ndx = 0;
for (int stackNdx = mStacks.size() - 1; stackNdx >= 0; --stackNdx) {
final TaskStack stack = mStacks.get(stackNdx);
pw.print(" mStackId="); pw.println(stack.mStackId);
ArrayList<Task> tasks = stack.getTasks();
for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) {
final Task task = tasks.get(taskNdx);
pw.print(" mTaskId="); pw.println(task.taskId);
AppTokenList tokens = task.mAppTokens;
for (int tokenNdx = tokens.size() - 1; tokenNdx >= 0; --tokenNdx, ++ndx) {
final AppWindowToken wtoken = tokens.get(tokenNdx);
pw.print(" Activity #"); pw.print(tokenNdx);
pw.print(' '); pw.print(wtoken); pw.println(":");
wtoken.dump(pw, " ");
}
}
}
if (ndx == 0) {
pw.println(" None");
}
pw.println();
if (!mExitingTokens.isEmpty()) {
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, " ");
}
}
pw.println();
}
@Override
public String toString() {
return "Display " + mDisplayId + " info=" + mDisplayInfo + " stacks=" + mStacks;
}
}
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