| /* |
| * Copyright (C) 2017 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.AnimationAdapter.STATUS_BAR_TRANSITION_DURATION; |
| import static com.android.server.wm.WindowStateAnimator.STACK_CLIP_AFTER_ANIM; |
| import static com.android.server.wm.WindowStateAnimator.STACK_CLIP_NONE; |
| |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.os.SystemClock; |
| import android.view.SurfaceControl; |
| import android.view.SurfaceControl.Transaction; |
| import android.view.animation.Animation; |
| import android.view.animation.AnimationSet; |
| import android.view.animation.Interpolator; |
| import android.view.animation.Transformation; |
| import android.view.animation.TranslateAnimation; |
| |
| import com.android.server.wm.LocalAnimationAdapter.AnimationSpec; |
| |
| /** |
| * Animation spec for regular window animations. |
| */ |
| public class WindowAnimationSpec implements AnimationSpec { |
| |
| private Animation mAnimation; |
| private final Point mPosition = new Point(); |
| private final ThreadLocal<TmpValues> mThreadLocalTmps = ThreadLocal.withInitial(TmpValues::new); |
| private final boolean mCanSkipFirstFrame; |
| private final Rect mStackBounds = new Rect(); |
| private int mStackClipMode; |
| private final Rect mTmpRect = new Rect(); |
| |
| public WindowAnimationSpec(Animation animation, Point position, boolean canSkipFirstFrame) { |
| this(animation, position, null /* stackBounds */, canSkipFirstFrame, STACK_CLIP_NONE); |
| } |
| |
| public WindowAnimationSpec(Animation animation, Point position, Rect stackBounds, |
| boolean canSkipFirstFrame, int stackClipMode) { |
| mAnimation = animation; |
| if (position != null) { |
| mPosition.set(position.x, position.y); |
| } |
| mCanSkipFirstFrame = canSkipFirstFrame; |
| mStackClipMode = stackClipMode; |
| if (stackBounds != null) { |
| mStackBounds.set(stackBounds); |
| } |
| } |
| |
| @Override |
| public boolean getDetachWallpaper() { |
| return mAnimation.getDetachWallpaper(); |
| } |
| |
| @Override |
| public int getBackgroundColor() { |
| return mAnimation.getBackgroundColor(); |
| } |
| |
| @Override |
| public long getDuration() { |
| return mAnimation.computeDurationHint(); |
| } |
| |
| @Override |
| public void apply(Transaction t, SurfaceControl leash, long currentPlayTime) { |
| final TmpValues tmp = mThreadLocalTmps.get(); |
| tmp.transformation.clear(); |
| mAnimation.getTransformation(currentPlayTime, tmp.transformation); |
| tmp.transformation.getMatrix().postTranslate(mPosition.x, mPosition.y); |
| t.setMatrix(leash, tmp.transformation.getMatrix(), tmp.floats); |
| t.setAlpha(leash, tmp.transformation.getAlpha()); |
| if (mStackClipMode == STACK_CLIP_NONE) { |
| t.setWindowCrop(leash, tmp.transformation.getClipRect()); |
| } else if (mStackClipMode == STACK_CLIP_AFTER_ANIM) { |
| t.setFinalCrop(leash, mStackBounds); |
| t.setWindowCrop(leash, tmp.transformation.getClipRect()); |
| } else { |
| mTmpRect.set(tmp.transformation.getClipRect()); |
| mTmpRect.intersect(mStackBounds); |
| t.setWindowCrop(leash, mTmpRect); |
| } |
| } |
| |
| @Override |
| public long calculateStatusBarTransitionStartTime() { |
| TranslateAnimation openTranslateAnimation = findTranslateAnimation(mAnimation); |
| if (openTranslateAnimation != null) { |
| |
| // Some interpolators are extremely quickly mostly finished, but not completely. For |
| // our purposes, we need to find the fraction for which ther interpolator is mostly |
| // there, and use that value for the calculation. |
| float t = findAlmostThereFraction(openTranslateAnimation.getInterpolator()); |
| return SystemClock.uptimeMillis() |
| + openTranslateAnimation.getStartOffset() |
| + (long)(openTranslateAnimation.getDuration() * t) |
| - STATUS_BAR_TRANSITION_DURATION; |
| } else { |
| return SystemClock.uptimeMillis(); |
| } |
| } |
| |
| @Override |
| public boolean canSkipFirstFrame() { |
| return mCanSkipFirstFrame; |
| } |
| |
| /** |
| * Tries to find a {@link TranslateAnimation} inside the {@code animation}. |
| * |
| * @return the found animation, {@code null} otherwise |
| */ |
| private static TranslateAnimation findTranslateAnimation(Animation animation) { |
| if (animation instanceof TranslateAnimation) { |
| return (TranslateAnimation) animation; |
| } else if (animation instanceof AnimationSet) { |
| AnimationSet set = (AnimationSet) animation; |
| for (int i = 0; i < set.getAnimations().size(); i++) { |
| Animation a = set.getAnimations().get(i); |
| if (a instanceof TranslateAnimation) { |
| return (TranslateAnimation) a; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Binary searches for a {@code t} such that there exists a {@code -0.01 < eps < 0.01} for which |
| * {@code interpolator(t + eps) > 0.99}. |
| */ |
| private static float findAlmostThereFraction(Interpolator interpolator) { |
| float val = 0.5f; |
| float adj = 0.25f; |
| while (adj >= 0.01f) { |
| if (interpolator.getInterpolation(val) < 0.99f) { |
| val += adj; |
| } else { |
| val -= adj; |
| } |
| adj /= 2; |
| } |
| return val; |
| } |
| |
| private static class TmpValues { |
| final Transformation transformation = new Transformation(); |
| final float[] floats = new float[9]; |
| } |
| } |