/*
* Copyright (C) 2016 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.app.WindowConfiguration;
import android.content.res.Configuration;
import android.graphics.Rect;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Slog;
import android.util.SparseArray;
import android.view.DisplayCutout;
import android.view.DisplayInfo;
import com.android.internal.annotations.VisibleForTesting;
import java.lang.ref.WeakReference;
import static com.android.server.wm.WindowContainer.POSITION_BOTTOM;
import static com.android.server.wm.WindowContainer.POSITION_TOP;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_STACK;
import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
/**
* Controller for the stack container. This is created by activity manager to link activity stacks
* to the stack container they use in window manager.
*
* Test class: {@link StackWindowControllerTests}
*/
public class StackWindowController
extends WindowContainerController<TaskStack, StackWindowListener> {
private final int mStackId;
private final H mHandler;
// Temp bounds only used in adjustConfigurationForBounds()
private final Rect mTmpRect = new Rect();
private final Rect mTmpStableInsets = new Rect();
private final Rect mTmpNonDecorInsets = new Rect();
private final Rect mTmpDisplayBounds = new Rect();
public StackWindowController(int stackId, StackWindowListener listener, int displayId,
boolean onTop, Rect outBounds) {
this(stackId, listener, displayId, onTop, outBounds, WindowManagerService.getInstance());
}
@VisibleForTesting
public StackWindowController(int stackId, StackWindowListener listener,
int displayId, boolean onTop, Rect outBounds, WindowManagerService service) {
super(listener, service);
mStackId = stackId;
mHandler = new H(new WeakReference<>(this), service.mH.getLooper());
synchronized (mWindowMap) {
final DisplayContent dc = mRoot.getDisplayContent(displayId);
if (dc == null) {
throw new IllegalArgumentException("Trying to add stackId=" + stackId
+ " to unknown displayId=" + displayId);
}
dc.createStack(stackId, onTop, this);
getRawBounds(outBounds);
}
}
@Override
public void removeContainer() {
synchronized (mWindowMap) {
if (mContainer != null) {
mContainer.removeIfPossible();
super.removeContainer();
}
}
}
public void reparent(int displayId, Rect outStackBounds, boolean onTop) {
synchronized (mWindowMap) {
if (mContainer == null) {
throw new IllegalArgumentException("Trying to move unknown stackId=" + mStackId
+ " to displayId=" + displayId);
}
final DisplayContent targetDc = mRoot.getDisplayContent(displayId);
if (targetDc == null) {
throw new IllegalArgumentException("Trying to move stackId=" + mStackId
+ " to unknown displayId=" + displayId);
}
targetDc.moveStackToDisplay(mContainer, onTop);
getRawBounds(outStackBounds);
}
}
public void positionChildAt(TaskWindowContainerController child, int position) {
synchronized (mWindowMap) {
if (DEBUG_STACK) Slog.i(TAG_WM, "positionChildAt: positioning task=" + child
+ " at " + position);
if (child.mContainer == null) {
if (DEBUG_STACK) Slog.i(TAG_WM,
"positionChildAt: could not find task=" + this);
return;
}
if (mContainer == null) {
if (DEBUG_STACK) Slog.i(TAG_WM,
"positionChildAt: could not find stack for task=" + mContainer);
return;
}
child.mContainer.positionAt(position);
mContainer.getDisplayContent().layoutAndAssignWindowLayersIfNeeded();
}
}
public void positionChildAtTop(TaskWindowContainerController child, boolean includingParents) {
if (child == null) {
// TODO: Fix the call-points that cause this to happen.
return;
}
synchronized(mWindowMap) {
final Task childTask = child.mContainer;
if (childTask == null) {
Slog.e(TAG_WM, "positionChildAtTop: task=" + child + " not found");
return;
}
mContainer.positionChildAt(POSITION_TOP, childTask, includingParents);
if (mService.mAppTransition.isTransitionSet()) {
childTask.setSendingToBottom(false);
}
mContainer.getDisplayContent().layoutAndAssignWindowLayersIfNeeded();
}
}
public void positionChildAtBottom(TaskWindowContainerController child,
boolean includingParents) {
if (child == null) {
// TODO: Fix the call-points that cause this to happen.
return;
}
synchronized(mWindowMap) {
final Task childTask = child.mContainer;
if (childTask == null) {
Slog.e(TAG_WM, "positionChildAtBottom: task=" + child + " not found");
return;
}
mContainer.positionChildAt(POSITION_BOTTOM, childTask, includingParents);
if (mService.mAppTransition.isTransitionSet()) {
childTask.setSendingToBottom(true);
}
mContainer.getDisplayContent().layoutAndAssignWindowLayersIfNeeded();
}
}
/**
* Re-sizes a stack and its containing tasks.
*
* @param bounds New stack bounds. Passing in null sets the bounds to fullscreen.
* @param taskBounds Bounds for tasks in the resized stack, keyed by task id.
* @param taskTempInsetBounds Inset bounds for individual tasks, keyed by task id.
*/
public void resize(Rect bounds, SparseArray<Rect> taskBounds,
SparseArray<Rect> taskTempInsetBounds) {
synchronized (mWindowMap) {
if (mContainer == null) {
throw new IllegalArgumentException("resizeStack: stack " + this + " not found.");
}
// We might trigger a configuration change. Save the current task bounds for freezing.
mContainer.prepareFreezingTaskBounds();
if (mContainer.setBounds(bounds, taskBounds, taskTempInsetBounds)
&& mContainer.isVisible()) {
mContainer.getDisplayContent().setLayoutNeeded();
mService.mWindowPlacerLocked.performSurfacePlacement();
}
}
}
public void onPipAnimationEndResize() {
synchronized (mService.mWindowMap) {
mContainer.onPipAnimationEndResize();
}
}
/**
* @see TaskStack.getStackDockedModeBoundsLocked(Rect, Rect, Rect, boolean)
*/
public void getStackDockedModeBounds(Rect currentTempTaskBounds, Rect outStackBounds,
Rect outTempTaskBounds, boolean ignoreVisibility) {
synchronized (mWindowMap) {
if (mContainer != null) {
mContainer.getStackDockedModeBoundsLocked(currentTempTaskBounds, outStackBounds,
outTempTaskBounds, ignoreVisibility);
return;
}
outStackBounds.setEmpty();
outTempTaskBounds.setEmpty();
}
}
public void prepareFreezingTaskBounds() {
synchronized (mWindowMap) {
if (mContainer == null) {
throw new IllegalArgumentException("prepareFreezingTaskBounds: stack " + this
+ " not found.");
}
mContainer.prepareFreezingTaskBounds();
}
}
public void getRawBounds(Rect outBounds) {
synchronized (mWindowMap) {
if (mContainer.matchParentBounds()) {
outBounds.setEmpty();
} else {
mContainer.getRawBounds(outBounds);
}
}
}
public void getBounds(Rect outBounds) {
synchronized (mWindowMap) {
if (mContainer != null) {
mContainer.getBounds(outBounds);
return;
}
outBounds.setEmpty();
}
}
public void getBoundsForNewConfiguration(Rect outBounds) {
synchronized(mWindowMap) {
mContainer.getBoundsForNewConfiguration(outBounds);
}
}
/**
* Adjusts the screen size in dp's for the {@param config} for the given params. The provided
* params represent the desired state of a configuration change. Since this utility is used
* before mContainer has been updated, any relevant properties (like {@param windowingMode})
* need to be passed in.
*/
public void adjustConfigurationForBounds(Rect bounds, Rect insetBounds,
Rect nonDecorBounds, Rect stableBounds, boolean overrideWidth,
boolean overrideHeight, float density, Configuration config,
Configuration parentConfig, int windowingMode) {
synchronized (mWindowMap) {
final TaskStack stack = mContainer;
final DisplayContent displayContent = stack.getDisplayContent();
final DisplayInfo di = displayContent.getDisplayInfo();
final DisplayCutout displayCutout = di.displayCutout;
// Get the insets and display bounds
mService.mPolicy.getStableInsetsLw(di.rotation, di.logicalWidth, di.logicalHeight,
displayCutout, mTmpStableInsets);
mService.mPolicy.getNonDecorInsetsLw(di.rotation, di.logicalWidth, di.logicalHeight,
displayCutout, mTmpNonDecorInsets);
mTmpDisplayBounds.set(0, 0, di.logicalWidth, di.logicalHeight);
int width;
int height;
final Rect parentAppBounds = parentConfig.windowConfiguration.getAppBounds();
config.windowConfiguration.setBounds(bounds);
config.windowConfiguration.setAppBounds(!bounds.isEmpty() ? bounds : null);
boolean intersectParentBounds = false;
if (WindowConfiguration.isFloating(windowingMode)) {
// Floating tasks should not be resized to the screen's bounds.
if (windowingMode == WindowConfiguration.WINDOWING_MODE_PINNED
&& bounds.width() == mTmpDisplayBounds.width()
&& bounds.height() == mTmpDisplayBounds.height()) {
// If the bounds we are animating is the same as the fullscreen stack
// dimensions, then apply the same inset calculations that we normally do for
// the fullscreen stack, without intersecting it with the display bounds
stableBounds.inset(mTmpStableInsets);
nonDecorBounds.inset(mTmpNonDecorInsets);
// Move app bounds to zero to apply intersection with parent correctly. They are
// used only for evaluating width and height, so it's OK to move them around.
config.windowConfiguration.getAppBounds().offsetTo(0, 0);
intersectParentBounds = true;
}
width = (int) (stableBounds.width() / density);
height = (int) (stableBounds.height() / density);
} else {
// For calculating screenWidthDp, screenWidthDp, we use the stable inset screen
// area, i.e. the screen area without the system bars.
// Additionally task dimensions should not be bigger than its parents dimensions.
// The non decor inset are areas that could never be removed in Honeycomb. See
// {@link WindowManagerPolicy#getNonDecorInsetsLw}.
intersectDisplayBoundsExcludeInsets(nonDecorBounds,
insetBounds != null ? insetBounds : bounds, mTmpNonDecorInsets,
mTmpDisplayBounds, overrideWidth, overrideHeight);
intersectDisplayBoundsExcludeInsets(stableBounds,
insetBounds != null ? insetBounds : bounds, mTmpStableInsets,
mTmpDisplayBounds, overrideWidth, overrideHeight);
width = Math.min((int) (stableBounds.width() / density),
parentConfig.screenWidthDp);
height = Math.min((int) (stableBounds.height() / density),
parentConfig.screenHeightDp);
intersectParentBounds = true;
}
if (intersectParentBounds && config.windowConfiguration.getAppBounds() != null) {
config.windowConfiguration.getAppBounds().intersect(parentAppBounds);
}
config.screenWidthDp = width;
config.screenHeightDp = height;
config.smallestScreenWidthDp = getSmallestWidthForTaskBounds(
insetBounds != null ? insetBounds : bounds, density, windowingMode);
}
}
/**
* Intersects the specified {@code inOutBounds} with the display frame that excludes the stable
* inset areas.
*
* @param inOutBounds The inOutBounds to subtract the stable inset areas from.
*/
private void intersectDisplayBoundsExcludeInsets(Rect inOutBounds, Rect inInsetBounds,
Rect stableInsets, Rect displayBounds, boolean overrideWidth, boolean overrideHeight) {
mTmpRect.set(inInsetBounds);
mService.intersectDisplayInsetBounds(displayBounds, stableInsets, mTmpRect);
int leftInset = mTmpRect.left - inInsetBounds.left;
int topInset = mTmpRect.top - inInsetBounds.top;
int rightInset = overrideWidth ? 0 : inInsetBounds.right - mTmpRect.right;
int bottomInset = overrideHeight ? 0 : inInsetBounds.bottom - mTmpRect.bottom;
inOutBounds.inset(leftInset, topInset, rightInset, bottomInset);
}
/**
* Calculates the smallest width for a task given the target {@param bounds} and
* {@param windowingMode}. Avoid using values from mContainer since they can be out-of-date.
*
* @return the smallest width to be used in the Configuration, in dips
*/
private int getSmallestWidthForTaskBounds(Rect bounds, float density, int windowingMode) {
final DisplayContent displayContent = mContainer.getDisplayContent();
final DisplayInfo displayInfo = displayContent.getDisplayInfo();
if (bounds == null || (bounds.width() == displayInfo.logicalWidth &&
bounds.height() == displayInfo.logicalHeight)) {
// If the bounds are fullscreen, return the value of the fullscreen configuration
return displayContent.getConfiguration().smallestScreenWidthDp;
} else if (WindowConfiguration.isFloating(windowingMode)) {
// For floating tasks, calculate the smallest width from the bounds of the task
return (int) (Math.min(bounds.width(), bounds.height()) / density);
} else {
// Iterating across all screen orientations, and return the minimum of the task
// width taking into account that the bounds might change because the snap algorithm
// snaps to a different value
return displayContent.getDockedDividerController()
.getSmallestWidthDpForBounds(bounds);
}
}
void requestResize(Rect bounds) {
mHandler.obtainMessage(H.REQUEST_RESIZE, bounds).sendToTarget();
}
@Override
public String toString() {
return "{StackWindowController stackId=" + mStackId + "}";
}
private static final class H extends Handler {
static final int REQUEST_RESIZE = 0;
private final WeakReference<StackWindowController> mController;
H(WeakReference<StackWindowController> controller, Looper looper) {
super(looper);
mController = controller;
}
@Override
public void handleMessage(Message msg) {
final StackWindowController controller = mController.get();
final StackWindowListener listener = (controller != null)
? controller.mListener : null;
if (listener == null) {
return;
}
switch (msg.what) {
case REQUEST_RESIZE:
listener.requestResize((Rect) msg.obj);
break;
}
}
}
}