/*
* Copyright (C) 2013 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.wm.WindowManagerService.DEBUG_TASK_MOVEMENT;
import static com.android.server.wm.WindowManagerService.TAG;
import android.graphics.Rect;
import android.os.Debug;
import android.util.EventLog;
import android.util.Slog;
import android.util.TypedValue;
import com.android.server.EventLogTags;
import java.io.PrintWriter;
import java.util.ArrayList;
public class TaskStack {
/** Amount of time in milliseconds to animate the dim surface from one value to another,
* when no window animation is driving it. */
private static final int DEFAULT_DIM_DURATION = 200;
/** Unique identifier */
final int mStackId;
/** The service */
private final WindowManagerService mService;
/** The display this stack sits under. */
private DisplayContent mDisplayContent;
/** The Tasks that define this stack. Oldest Tasks are at the bottom. The ordering must match
* mTaskHistory in the ActivityStack with the same mStackId */
private final ArrayList<Task> mTasks = new ArrayList<Task>();
/** For comparison with DisplayContent bounds. */
private Rect mTmpRect = new Rect();
/** Content limits relative to the DisplayContent this sits in. */
private Rect mBounds = new Rect();
/** Whether mBounds is fullscreen */
private boolean mFullscreen = true;
/** Used to support {@link android.view.WindowManager.LayoutParams#FLAG_DIM_BEHIND} */
private DimLayer mDimLayer;
/** The particular window with FLAG_DIM_BEHIND set. If null, hide mDimLayer. */
WindowStateAnimator mDimWinAnimator;
/** Support for non-zero {@link android.view.animation.Animation#getBackgroundColor()} */
DimLayer mAnimationBackgroundSurface;
/** The particular window with an Animation with non-zero background color. */
WindowStateAnimator mAnimationBackgroundAnimator;
/** Set to false at the start of performLayoutAndPlaceSurfaces. If it is still false by the end
* then stop any dimming. */
boolean mDimmingTag;
/** Application tokens that are exiting, but still on screen for animations. */
final AppTokenList mExitingAppTokens = new AppTokenList();
/** Detach this stack from its display when animation completes. */
boolean mDeferDetach;
TaskStack(WindowManagerService service, int stackId) {
mService = service;
mStackId = stackId;
// TODO: remove bounds from log, they are always 0.
EventLog.writeEvent(EventLogTags.WM_STACK_CREATED, stackId, mBounds.left, mBounds.top,
mBounds.right, mBounds.bottom);
}
DisplayContent getDisplayContent() {
return mDisplayContent;
}
ArrayList<Task> getTasks() {
return mTasks;
}
void resizeWindows() {
final boolean underStatusBar = mBounds.top == 0;
final ArrayList<WindowState> resizingWindows = mService.mResizingWindows;
for (int taskNdx = mTasks.size() - 1; taskNdx >= 0; --taskNdx) {
final ArrayList<AppWindowToken> activities = mTasks.get(taskNdx).mAppTokens;
for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
final ArrayList<WindowState> windows = activities.get(activityNdx).allAppWindows;
for (int winNdx = windows.size() - 1; winNdx >= 0; --winNdx) {
final WindowState win = windows.get(winNdx);
if (!resizingWindows.contains(win)) {
if (WindowManagerService.DEBUG_RESIZE) Slog.d(TAG,
"setBounds: Resizing " + win);
resizingWindows.add(win);
}
win.mUnderStatusBar = underStatusBar;
}
}
}
}
boolean setBounds(Rect bounds) {
boolean oldFullscreen = mFullscreen;
if (mDisplayContent != null) {
mDisplayContent.getLogicalDisplayRect(mTmpRect);
mFullscreen = mTmpRect.equals(bounds);
}
if (mBounds.equals(bounds) && oldFullscreen == mFullscreen) {
return false;
}
mDimLayer.setBounds(bounds);
mAnimationBackgroundSurface.setBounds(bounds);
mBounds.set(bounds);
return true;
}
void getBounds(Rect out) {
out.set(mBounds);
}
void updateDisplayInfo() {
if (mFullscreen && mDisplayContent != null) {
mDisplayContent.getLogicalDisplayRect(mTmpRect);
setBounds(mTmpRect);
}
}
boolean isFullscreen() {
return mFullscreen;
}
boolean isAnimating() {
for (int taskNdx = mTasks.size() - 1; taskNdx >= 0; --taskNdx) {
final ArrayList<AppWindowToken> activities = mTasks.get(taskNdx).mAppTokens;
for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) {
final ArrayList<WindowState> windows = activities.get(activityNdx).allAppWindows;
for (int winNdx = windows.size() - 1; winNdx >= 0; --winNdx) {
final WindowStateAnimator winAnimator = windows.get(winNdx).mWinAnimator;
if (winAnimator.isAnimating() || winAnimator.mWin.mExiting) {
return true;
}
}
}
}
return false;
}
/**
* Put a Task in this stack. Used for adding and moving.
* @param task The task to add.
* @param toTop Whether to add it to the top or bottom.
*/
void addTask(Task task, boolean toTop) {
int stackNdx;
if (!toTop) {
stackNdx = 0;
} else {
stackNdx = mTasks.size();
if (!mService.isCurrentProfileLocked(task.mUserId)) {
// Place the task below all current user tasks.
while (--stackNdx >= 0) {
if (!mService.isCurrentProfileLocked(mTasks.get(stackNdx).mUserId)) {
break;
}
}
// Put it above first non-current user task.
++stackNdx;
}
}
if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "addTask: task=" + task + " toTop=" + toTop
+ " pos=" + stackNdx);
mTasks.add(stackNdx, task);
task.mStack = this;
mDisplayContent.moveStack(this, true);
EventLog.writeEvent(EventLogTags.WM_TASK_MOVED, task.taskId, toTop ? 1 : 0, stackNdx);
}
void moveTaskToTop(Task task) {
if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "moveTaskToTop: task=" + task + " Callers="
+ Debug.getCallers(6));
mTasks.remove(task);
addTask(task, true);
}
void moveTaskToBottom(Task task) {
if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "moveTaskToBottom: task=" + task);
mTasks.remove(task);
addTask(task, false);
}
/**
* Delete a Task from this stack. If it is the last Task in the stack, move this stack to the
* back.
* @param task The Task to delete.
*/
void removeTask(Task task) {
if (DEBUG_TASK_MOVEMENT) Slog.d(TAG, "removeTask: task=" + task);
mTasks.remove(task);
if (mDisplayContent != null) {
if (mTasks.isEmpty()) {
mDisplayContent.moveStack(this, false);
}
mDisplayContent.layoutNeeded = true;
}
}
void attachDisplayContent(DisplayContent displayContent) {
if (mDisplayContent != null) {
throw new IllegalStateException("attachDisplayContent: Already attached");
}
mDisplayContent = displayContent;
mDimLayer = new DimLayer(mService, this, displayContent);
mAnimationBackgroundSurface = new DimLayer(mService, this, displayContent);
updateDisplayInfo();
}
void detachDisplay() {
EventLog.writeEvent(EventLogTags.WM_STACK_REMOVED, mStackId);
boolean doAnotherLayoutPass = false;
for (int taskNdx = mTasks.size() - 1; taskNdx >= 0; --taskNdx) {
final AppTokenList appWindowTokens = mTasks.get(taskNdx).mAppTokens;
for (int appNdx = appWindowTokens.size() - 1; appNdx >= 0; --appNdx) {
final WindowList appWindows = appWindowTokens.get(appNdx).allAppWindows;
for (int winNdx = appWindows.size() - 1; winNdx >= 0; --winNdx) {
mService.removeWindowInnerLocked(null, appWindows.get(winNdx));
doAnotherLayoutPass = true;
}
}
}
if (doAnotherLayoutPass) {
mService.requestTraversalLocked();
}
mAnimationBackgroundSurface.destroySurface();
mAnimationBackgroundSurface = null;
mDimLayer.destroySurface();
mDimLayer = null;
mDisplayContent = null;
}
void resetAnimationBackgroundAnimator() {
mAnimationBackgroundAnimator = null;
mAnimationBackgroundSurface.hide();
}
private long getDimBehindFadeDuration(long duration) {
TypedValue tv = new TypedValue();
mService.mContext.getResources().getValue(
com.android.internal.R.fraction.config_dimBehindFadeDuration, tv, true);
if (tv.type == TypedValue.TYPE_FRACTION) {
duration = (long)tv.getFraction(duration, duration);
} else if (tv.type >= TypedValue.TYPE_FIRST_INT && tv.type <= TypedValue.TYPE_LAST_INT) {
duration = tv.data;
}
return duration;
}
boolean animateDimLayers() {
final int dimLayer;
final float dimAmount;
if (mDimWinAnimator == null) {
dimLayer = mDimLayer.getLayer();
dimAmount = 0;
} else {
dimLayer = mDimWinAnimator.mAnimLayer - WindowManagerService.LAYER_OFFSET_DIM;
dimAmount = mDimWinAnimator.mWin.mAttrs.dimAmount;
}
final float targetAlpha = mDimLayer.getTargetAlpha();
if (targetAlpha != dimAmount) {
if (mDimWinAnimator == null) {
mDimLayer.hide(DEFAULT_DIM_DURATION);
} else {
long duration = (mDimWinAnimator.mAnimating && mDimWinAnimator.mAnimation != null)
? mDimWinAnimator.mAnimation.computeDurationHint()
: DEFAULT_DIM_DURATION;
if (targetAlpha > dimAmount) {
duration = getDimBehindFadeDuration(duration);
}
mDimLayer.show(dimLayer, dimAmount, duration);
}
} else if (mDimLayer.getLayer() != dimLayer) {
mDimLayer.setLayer(dimLayer);
}
if (mDimLayer.isAnimating()) {
if (!mService.okToDisplay()) {
// Jump to the end of the animation.
mDimLayer.show();
} else {
return mDimLayer.stepAnimation();
}
}
return false;
}
void resetDimmingTag() {
mDimmingTag = false;
}
void setDimmingTag() {
mDimmingTag = true;
}
boolean testDimmingTag() {
return mDimmingTag;
}
boolean isDimming() {
return mDimLayer.isDimming();
}
boolean isDimming(WindowStateAnimator winAnimator) {
return mDimWinAnimator == winAnimator && mDimLayer.isDimming();
}
void startDimmingIfNeeded(WindowStateAnimator newWinAnimator) {
// Only set dim params on the highest dimmed layer.
final WindowStateAnimator existingDimWinAnimator = mDimWinAnimator;
// Don't turn on for an unshown surface, or for any layer but the highest dimmed layer.
if (newWinAnimator.mSurfaceShown && (existingDimWinAnimator == null
|| !existingDimWinAnimator.mSurfaceShown
|| existingDimWinAnimator.mAnimLayer < newWinAnimator.mAnimLayer)) {
mDimWinAnimator = newWinAnimator;
}
}
void stopDimmingIfNeeded() {
if (!mDimmingTag && isDimming()) {
mDimWinAnimator = null;
}
}
void setAnimationBackground(WindowStateAnimator winAnimator, int color) {
int animLayer = winAnimator.mAnimLayer;
if (mAnimationBackgroundAnimator == null
|| animLayer < mAnimationBackgroundAnimator.mAnimLayer) {
mAnimationBackgroundAnimator = winAnimator;
animLayer = mService.adjustAnimationBackground(winAnimator);
mAnimationBackgroundSurface.show(animLayer - WindowManagerService.LAYER_OFFSET_DIM,
((color >> 24) & 0xff) / 255f, 0);
}
}
void switchUser(int userId) {
int top = mTasks.size();
for (int taskNdx = 0; taskNdx < top; ++taskNdx) {
Task task = mTasks.get(taskNdx);
if (mService.isCurrentProfileLocked(task.mUserId)) {
mTasks.remove(taskNdx);
mTasks.add(task);
--top;
}
}
}
void close() {
mDimLayer.mDimSurface.destroy();
mAnimationBackgroundSurface.mDimSurface.destroy();
}
public void dump(String prefix, PrintWriter pw) {
pw.print(prefix); pw.print("mStackId="); pw.println(mStackId);
pw.print(prefix); pw.print("mDeferDetach="); pw.println(mDeferDetach);
for (int taskNdx = 0; taskNdx < mTasks.size(); ++taskNdx) {
pw.print(prefix); pw.println(mTasks.get(taskNdx));
}
if (mAnimationBackgroundSurface.isDimming()) {
pw.print(prefix); pw.println("mWindowAnimationBackgroundSurface:");
mAnimationBackgroundSurface.printTo(prefix + " ", pw);
}
if (mDimLayer.isDimming()) {
pw.print(prefix); pw.println("mDimLayer:");
mDimLayer.printTo(prefix, pw);
pw.print(prefix); pw.print("mDimWinAnimator="); pw.println(mDimWinAnimator);
}
if (!mExitingAppTokens.isEmpty()) {
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, " ");
}
}
}
@Override
public String toString() {
return "{stackId=" + mStackId + " tasks=" + mTasks + "}";
}
}
|
