0aae2d4e00
The goal is to fix a bunch of fragment-related bugs caused by various things trying to do fragment transactions after onPause()... which currently throws an exception, since this is after the activity's state has been saved so the new fragment state can be lost. The basic change is relatively simple -- we now consider processes hosting paused or stopping activities to be unkillable, and the client code now does the onSaveInstanceState() as part of stopping the activity. For compatibility, if an app's targetSdkVersion is < HONEYCOMB, the client side will still call onSaveInstanceState() prior to onPause() and just hold on to that state until it needs to report it in once being stopped. Also included here is a change to generate thumbnails by taking screenshots. The code for generating thumbnails by re-rendering the view hierarchy is thus removed. Change-Id: Iac1191646bd3cadbfe65779297795f22edf7e74a
322 lines
12 KiB
Java
322 lines
12 KiB
Java
/*
|
|
* Copyright (C) 2010 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; // TODO: use com.android.server.wm, once things move there
|
|
|
|
import android.content.Context;
|
|
import android.graphics.Bitmap;
|
|
import android.graphics.Canvas;
|
|
import android.graphics.Color;
|
|
import android.graphics.Matrix;
|
|
import android.graphics.Paint;
|
|
import android.graphics.PixelFormat;
|
|
import android.graphics.Rect;
|
|
import android.util.DisplayMetrics;
|
|
import android.util.Slog;
|
|
import android.view.Display;
|
|
import android.view.Surface;
|
|
import android.view.SurfaceSession;
|
|
import android.view.animation.Animation;
|
|
import android.view.animation.AnimationUtils;
|
|
import android.view.animation.Transformation;
|
|
|
|
class ScreenRotationAnimation {
|
|
static final String TAG = "ScreenRotationAnimation";
|
|
static final boolean DEBUG = false;
|
|
|
|
final Context mContext;
|
|
final Display mDisplay;
|
|
Surface mSurface;
|
|
int mWidth, mHeight;
|
|
|
|
int mSnapshotRotation;
|
|
int mSnapshotDeltaRotation;
|
|
int mOriginalRotation;
|
|
int mOriginalWidth, mOriginalHeight;
|
|
int mCurRotation;
|
|
|
|
Animation mExitAnimation;
|
|
final Transformation mExitTransformation = new Transformation();
|
|
Animation mEnterAnimation;
|
|
final Transformation mEnterTransformation = new Transformation();
|
|
boolean mStarted;
|
|
|
|
final DisplayMetrics mDisplayMetrics = new DisplayMetrics();
|
|
final Matrix mSnapshotInitialMatrix = new Matrix();
|
|
final Matrix mSnapshotFinalMatrix = new Matrix();
|
|
final float[] mTmpFloats = new float[9];
|
|
|
|
public ScreenRotationAnimation(Context context, Display display, SurfaceSession session) {
|
|
mContext = context;
|
|
mDisplay = display;
|
|
|
|
display.getMetrics(mDisplayMetrics);
|
|
|
|
Bitmap screenshot = Surface.screenshot(0, 0);
|
|
|
|
if (screenshot != null) {
|
|
// Screenshot does NOT include rotation!
|
|
mSnapshotRotation = 0;
|
|
mWidth = screenshot.getWidth();
|
|
mHeight = screenshot.getHeight();
|
|
} else {
|
|
// Just in case.
|
|
mSnapshotRotation = display.getRotation();
|
|
mWidth = mDisplayMetrics.widthPixels;
|
|
mHeight = mDisplayMetrics.heightPixels;
|
|
}
|
|
|
|
mOriginalRotation = display.getRotation();
|
|
mOriginalWidth = mDisplayMetrics.widthPixels;
|
|
mOriginalHeight = mDisplayMetrics.heightPixels;
|
|
|
|
Surface.openTransaction();
|
|
if (mSurface != null) {
|
|
mSurface.destroy();
|
|
mSurface = null;
|
|
}
|
|
try {
|
|
mSurface = new Surface(session, 0, "FreezeSurface",
|
|
-1, mWidth, mHeight, PixelFormat.OPAQUE, 0);
|
|
} catch (Surface.OutOfResourcesException e) {
|
|
Slog.w(TAG, "Unable to allocate freeze surface", e);
|
|
}
|
|
mSurface.setLayer(WindowManagerService.TYPE_LAYER_MULTIPLIER * 200);
|
|
setRotation(display.getRotation());
|
|
|
|
Rect dirty = new Rect(0, 0, mWidth, mHeight);
|
|
Canvas c = null;
|
|
try {
|
|
c = mSurface.lockCanvas(dirty);
|
|
} catch (IllegalArgumentException e) {
|
|
Slog.w(TAG, "Unable to lock surface", e);
|
|
return;
|
|
} catch (Surface.OutOfResourcesException e) {
|
|
Slog.w(TAG, "Unable to lock surface", e);
|
|
return;
|
|
}
|
|
if (c == null) {
|
|
Slog.w(TAG, "Null surface");
|
|
return;
|
|
}
|
|
|
|
if (screenshot != null) {
|
|
c.drawBitmap(screenshot, 0, 0, new Paint(0));
|
|
} else {
|
|
c.drawColor(Color.GREEN);
|
|
}
|
|
|
|
mSurface.unlockCanvasAndPost(c);
|
|
Surface.closeTransaction();
|
|
|
|
if (screenshot != null) {
|
|
screenshot.recycle();
|
|
}
|
|
}
|
|
|
|
static int deltaRotation(int oldRotation, int newRotation) {
|
|
int delta = newRotation - oldRotation;
|
|
if (delta < 0) delta += 4;
|
|
return delta;
|
|
}
|
|
|
|
void setSnapshotTransform(Matrix matrix, float alpha) {
|
|
matrix.getValues(mTmpFloats);
|
|
mSurface.setPosition((int)mTmpFloats[Matrix.MTRANS_X],
|
|
(int)mTmpFloats[Matrix.MTRANS_Y]);
|
|
mSurface.setMatrix(
|
|
mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y],
|
|
mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]);
|
|
mSurface.setAlpha(alpha);
|
|
if (DEBUG) {
|
|
float[] srcPnts = new float[] { 0, 0, mWidth, mHeight };
|
|
float[] dstPnts = new float[4];
|
|
matrix.mapPoints(dstPnts, srcPnts);
|
|
Slog.i(TAG, "Original : (" + srcPnts[0] + "," + srcPnts[1]
|
|
+ ")-(" + srcPnts[2] + "," + srcPnts[3] + ")");
|
|
Slog.i(TAG, "Transformed: (" + dstPnts[0] + "," + dstPnts[1]
|
|
+ ")-(" + dstPnts[2] + "," + dstPnts[3] + ")");
|
|
}
|
|
}
|
|
|
|
public static void createRotationMatrix(int rotation, int width, int height,
|
|
Matrix outMatrix) {
|
|
switch (rotation) {
|
|
case Surface.ROTATION_0:
|
|
outMatrix.reset();
|
|
break;
|
|
case Surface.ROTATION_90:
|
|
outMatrix.setRotate(90, 0, 0);
|
|
outMatrix.postTranslate(height, 0);
|
|
break;
|
|
case Surface.ROTATION_180:
|
|
outMatrix.setRotate(180, 0, 0);
|
|
outMatrix.postTranslate(width, height);
|
|
break;
|
|
case Surface.ROTATION_270:
|
|
outMatrix.setRotate(270, 0, 0);
|
|
outMatrix.postTranslate(0, width);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Must be called while in a transaction.
|
|
public void setRotation(int rotation) {
|
|
mCurRotation = rotation;
|
|
|
|
// Compute the transformation matrix that must be applied
|
|
// to the snapshot to make it stay in the same original position
|
|
// with the current screen rotation.
|
|
int delta = deltaRotation(rotation, mSnapshotRotation);
|
|
createRotationMatrix(delta, mWidth, mHeight, mSnapshotInitialMatrix);
|
|
|
|
if (DEBUG) Slog.v(TAG, "**** ROTATION: " + delta);
|
|
setSnapshotTransform(mSnapshotInitialMatrix, 1.0f);
|
|
}
|
|
|
|
/**
|
|
* Returns true if animating.
|
|
*/
|
|
public boolean dismiss(long maxAnimationDuration, float animationScale) {
|
|
// Figure out how the screen has moved from the original rotation.
|
|
int delta = deltaRotation(mCurRotation, mOriginalRotation);
|
|
if (false && delta == 0) {
|
|
// Nothing changed, just remove the snapshot.
|
|
if (mSurface != null) {
|
|
mSurface.destroy();
|
|
mSurface = null;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
switch (delta) {
|
|
case Surface.ROTATION_0:
|
|
mExitAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_0_exit);
|
|
mEnterAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_0_enter);
|
|
break;
|
|
case Surface.ROTATION_90:
|
|
mExitAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_plus_90_exit);
|
|
mEnterAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_plus_90_enter);
|
|
break;
|
|
case Surface.ROTATION_180:
|
|
mExitAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_180_exit);
|
|
mEnterAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_180_enter);
|
|
break;
|
|
case Surface.ROTATION_270:
|
|
mExitAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_minus_90_exit);
|
|
mEnterAnimation = AnimationUtils.loadAnimation(mContext,
|
|
com.android.internal.R.anim.screen_rotate_minus_90_enter);
|
|
break;
|
|
}
|
|
|
|
mDisplay.getMetrics(mDisplayMetrics);
|
|
|
|
// Initialize the animations. This is a hack, redefining what "parent"
|
|
// means to allow supplying the last and next size. In this definition
|
|
// "%p" is the original (let's call it "previous") size, and "%" is the
|
|
// screen's current/new size.
|
|
mEnterAnimation.initialize(mDisplayMetrics.widthPixels, mDisplayMetrics.heightPixels,
|
|
mOriginalWidth, mOriginalHeight);
|
|
mExitAnimation.initialize(mDisplayMetrics.widthPixels, mDisplayMetrics.heightPixels,
|
|
mOriginalWidth, mOriginalHeight);
|
|
mStarted = false;
|
|
|
|
mExitAnimation.restrictDuration(maxAnimationDuration);
|
|
mExitAnimation.scaleCurrentDuration(animationScale);
|
|
mEnterAnimation.restrictDuration(maxAnimationDuration);
|
|
mEnterAnimation.scaleCurrentDuration(animationScale);
|
|
|
|
return true;
|
|
}
|
|
|
|
public void kill() {
|
|
if (mSurface != null) {
|
|
mSurface.destroy();
|
|
mSurface = null;
|
|
}
|
|
if (mExitAnimation != null) {
|
|
mExitAnimation.cancel();
|
|
mExitAnimation = null;
|
|
}
|
|
if (mEnterAnimation != null) {
|
|
mEnterAnimation.cancel();
|
|
mEnterAnimation = null;
|
|
}
|
|
}
|
|
|
|
public boolean isAnimating() {
|
|
return mEnterAnimation != null || mExitAnimation != null;
|
|
}
|
|
|
|
public boolean stepAnimation(long now) {
|
|
if (mEnterAnimation == null && mExitAnimation == null) {
|
|
return false;
|
|
}
|
|
|
|
if (!mStarted) {
|
|
mEnterAnimation.setStartTime(now);
|
|
mExitAnimation.setStartTime(now);
|
|
mStarted = true;
|
|
}
|
|
|
|
mExitTransformation.clear();
|
|
boolean moreExit = false;
|
|
if (mExitAnimation != null) {
|
|
moreExit = mExitAnimation.getTransformation(now, mExitTransformation);
|
|
if (DEBUG) Slog.v(TAG, "Stepped exit: " + mExitTransformation);
|
|
if (!moreExit) {
|
|
if (DEBUG) Slog.v(TAG, "Exit animation done!");
|
|
mExitAnimation.cancel();
|
|
mExitAnimation = null;
|
|
mExitTransformation.clear();
|
|
if (mSurface != null) {
|
|
mSurface.destroy();
|
|
mSurface = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
mEnterTransformation.clear();
|
|
boolean moreEnter = false;
|
|
if (mEnterAnimation != null) {
|
|
moreEnter = mEnterAnimation.getTransformation(now, mEnterTransformation);
|
|
if (!moreEnter) {
|
|
mEnterAnimation.cancel();
|
|
mEnterAnimation = null;
|
|
mEnterTransformation.clear();
|
|
}
|
|
}
|
|
|
|
if (mSurface != null) {
|
|
mSnapshotFinalMatrix.setConcat(mExitTransformation.getMatrix(), mSnapshotInitialMatrix);
|
|
setSnapshotTransform(mSnapshotFinalMatrix, mExitTransformation.getAlpha());
|
|
}
|
|
|
|
return moreEnter || moreExit;
|
|
}
|
|
|
|
public Transformation getEnterTransformation() {
|
|
return mEnterTransformation;
|
|
}
|
|
}
|