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Polish cross activity animation.

Browse Source 
Bug:238474994
Test: Go to settings, open a 2nd activity, swipe back and make sure
animations look nice. Drag horizontally to trigger cancel / recommit and
make sure transitions all look nice.

Change-Id: I777d8aebb8a8ded62da15d880ae54243b5f5cd39
This commit is contained in:
Shan Huang
2023-01-05 08:48:25 -08:00
parent 89e9ae171d
commit 723ff5c524
1 changed files with 160 additions and 117 deletions
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277
libs/WindowManager/Shell/src/com/android/wm/shell/back/CrossActivityAnimation.java
View File

@@ -31,11 +31,12 @@ import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.RectF;
import android.os.RemoteException;
import android.util.FloatProperty;
import android.util.TypedValue;
import android.view.IRemoteAnimationFinishedCallback;
import android.view.IRemoteAnimationRunner;
import android.view.RemoteAnimationTarget;
import android.view.SurfaceControl;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.window.BackEvent;
@@ -43,9 +44,10 @@ import android.window.BackMotionEvent;
import android.window.BackProgressAnimator;
import android.window.IOnBackInvokedCallback;
import com.android.internal.dynamicanimation.animation.SpringAnimation;
import com.android.internal.dynamicanimation.animation.SpringForce;
import com.android.internal.policy.ScreenDecorationsUtils;
import com.android.internal.protolog.common.ProtoLog;
import com.android.wm.shell.animation.Interpolators;
import com.android.wm.shell.common.annotations.ShellMainThread;
/** Class that defines cross-activity animation. */
@@ -56,24 +58,40 @@ class CrossActivityAnimation {
*/
private static final float MIN_WINDOW_SCALE = 0.9f;
/**
* Minimum alpha of the closing/entering window.
*/
private static final float CLOSING_MIN_WINDOW_ALPHA = 0.5f;
/**
* Progress value to fly out closing window and fly in entering window.
*/
private static final float SWITCH_ENTERING_WINDOW_PROGRESS = 0.5f;
/** Max window translation in the Y axis. */
private static final int WINDOW_MAX_DELTA_Y = 160;
/** Duration of fade in/out entering window. */
private static final int FADE_IN_DURATION = 100;
/** Duration of post animation after gesture committed. */
private static final int POST_ANIMATION_DURATION = 350;
private static final Interpolator INTERPOLATOR = Interpolators.EMPHASIZED;
private static final Interpolator INTERPOLATOR = new DecelerateInterpolator();
private static final FloatProperty<CrossActivityAnimation> ENTER_PROGRESS_PROP =
new FloatProperty<>("enter-alpha") {
@Override
public void setValue(CrossActivityAnimation anim, float value) {
anim.setEnteringProgress(value);
}
@Override
public Float get(CrossActivityAnimation object) {
return object.getEnteringProgress();
}
};
private static final FloatProperty<CrossActivityAnimation> LEAVE_PROGRESS_PROP =
new FloatProperty<>("leave-alpha") {
@Override
public void setValue(CrossActivityAnimation anim, float value) {
anim.setLeavingProgress(value);
}
@Override
public Float get(CrossActivityAnimation object) {
return object.getLeavingProgress();
}
};
private static final float MIN_WINDOW_ALPHA = 0.01f;
private static final float WINDOW_X_SHIFT_DP = 96;
private static final int SCALE_FACTOR = 100;
// TODO(b/264710590): Use the progress commit threshold from ViewConfiguration once it exists.
private static final float PROGRESS_COMMIT_THRESHOLD = 0.1f;
private static final float TARGET_COMMIT_PROGRESS = 0.5f;
private static final float ENTER_ALPHA_THRESHOLD = 0.22f;
private final Rect mStartTaskRect = new Rect();
private final float mCornerRadius;
@@ -84,12 +102,13 @@ class CrossActivityAnimation {
// The entering window properties.
private final Rect mEnteringStartRect = new Rect();
private final RectF mEnteringRect = new RectF();
private final SpringAnimation mEnteringProgressSpring;
private final SpringAnimation mLeavingProgressSpring;
// Max window x-shift in pixels.
private final float mWindowXShift;
private float mCurrentAlpha = 1.0f;
private float mEnteringMargin = 0;
private ValueAnimator mEnteringAnimator;
private boolean mEnteringWindowShow = false;
private float mEnteringProgress = 0f;
private float mLeavingProgress = 0f;
private final PointF mInitialTouchPos = new PointF();
@@ -115,16 +134,44 @@ class CrossActivityAnimation {
mCornerRadius = ScreenDecorationsUtils.getWindowCornerRadius(context);
mBackAnimationRunner = new BackAnimationRunner(new Callback(), new Runner());
mBackground = background;
mEnteringProgressSpring = new SpringAnimation(this, ENTER_PROGRESS_PROP);
mEnteringProgressSpring.setSpring(new SpringForce()
.setStiffness(SpringForce.STIFFNESS_MEDIUM)
.setDampingRatio(SpringForce.DAMPING_RATIO_NO_BOUNCY));
mLeavingProgressSpring = new SpringAnimation(this, LEAVE_PROGRESS_PROP);
mLeavingProgressSpring.setSpring(new SpringForce()
.setStiffness(SpringForce.STIFFNESS_MEDIUM)
.setDampingRatio(SpringForce.DAMPING_RATIO_NO_BOUNCY));
mWindowXShift = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, WINDOW_X_SHIFT_DP,
context.getResources().getDisplayMetrics());
}
/**
* Returns 1 if x >= edge1, 0 if x <= edge0, and a smoothed value between the two.
* From https://en.wikipedia.org/wiki/Smoothstep
*/
private static float smoothstep(float edge0, float edge1, float x) {
if (x < edge0) return 0;
if (x >= edge1) return 1;
x = (x - edge0) / (edge1 - edge0);
return x * x * (3 - 2 * x);
}
/**
* Linearly map x from range (a1, a2) to range (b1, b2).
*/
private static float mapLinear(float x, float a1, float a2, float b1, float b2) {
return b1 + (x - a1) * (b2 - b1) / (a2 - a1);
}
/**
* Linearly map a normalized value from (0, 1) to (min, max).
*/
private static float mapRange(float value, float min, float max) {
return min + (value * (max - min));
}
private float getInterpolatedProgress(float backProgress) {
return INTERPOLATOR.getInterpolation(backProgress);
}
private void startBackAnimation() {
if (mEnteringTarget == null || mClosingTarget == null) {
ProtoLog.d(WM_SHELL_BACK_PREVIEW, "Entering target or closing target is null.");
@@ -169,9 +216,6 @@ class CrossActivityAnimation {
mBackInProgress = false;
mTransformMatrix.reset();
mInitialTouchPos.set(0, 0);
mEnteringWindowShow = false;
mEnteringMargin = 0;
mEnteringAnimator = null;
if (mFinishCallback != null) {
try {
@@ -181,6 +225,10 @@ class CrossActivityAnimation {
}
mFinishCallback = null;
}
mEnteringProgressSpring.animateToFinalPosition(0);
mEnteringProgressSpring.skipToEnd();
mLeavingProgressSpring.animateToFinalPosition(0);
mLeavingProgressSpring.skipToEnd();
}
private void onGestureProgress(@NonNull BackEvent backEvent) {
@@ -190,84 +238,12 @@ class CrossActivityAnimation {
}
mTouchPos.set(backEvent.getTouchX(), backEvent.getTouchY());
if (mEnteringTarget == null || mClosingTarget == null) {
return;
}
final float progress = getInterpolatedProgress(backEvent.getProgress());
final float touchY = mTouchPos.y;
final int width = mStartTaskRect.width();
final int height = mStartTaskRect.height();
final float closingScale = mapRange(progress, 1, MIN_WINDOW_SCALE);
final float closingWidth = closingScale * width;
final float closingHeight = (float) height / width * closingWidth;
// Move the window along the X axis.
final float closingLeft = mStartTaskRect.left + (width - closingWidth) / 2;
// Move the window along the Y axis.
final float deltaYRatio = (touchY - mInitialTouchPos.y) / height;
final float deltaY = (float) Math.sin(deltaYRatio * Math.PI * 0.5f) * WINDOW_MAX_DELTA_Y;
final float closingTop = (height - closingHeight) * 0.5f + deltaY;
mClosingRect.set(
closingLeft, closingTop, closingLeft + closingWidth, closingTop + closingHeight);
mEnteringRect.set(mClosingRect);
// Switch closing/entering targets while reach to the threshold progress.
if (showEnteringWindow(progress > SWITCH_ENTERING_WINDOW_PROGRESS)) {
return;
}
// Present windows and update the alpha.
mCurrentAlpha = Math.max(mapRange(progress, 1.0f, 0), CLOSING_MIN_WINDOW_ALPHA);
mClosingRect.offset(mEnteringMargin, 0);
mEnteringRect.offset(mEnteringMargin - width, 0);
applyTransform(
mClosingTarget.leash, mClosingRect, mEnteringWindowShow ? 0.01f : mCurrentAlpha);
applyTransform(
mEnteringTarget.leash, mEnteringRect, mEnteringWindowShow ? mCurrentAlpha : 0.01f);
mTransaction.apply();
}
private boolean showEnteringWindow(boolean show) {
if (mEnteringAnimator == null) {
mEnteringAnimator = ValueAnimator.ofFloat(1f, 0f).setDuration(FADE_IN_DURATION);
mEnteringAnimator.setInterpolator(new AccelerateInterpolator());
mEnteringAnimator.addUpdateListener(animation -> {
float progress = animation.getAnimatedFraction();
final int width = mStartTaskRect.width();
mEnteringMargin = width * progress;
// We don't animate to 0 or the surface would become invisible and lose focus.
final float alpha = progress >= 0.5f ? 0.01f
: mapRange(progress * 2, mCurrentAlpha, 0.01f);
mClosingRect.offset(mEnteringMargin, 0);
mEnteringRect.offset(mEnteringMargin - width, 0);
applyTransform(mClosingTarget.leash, mClosingRect, alpha);
applyTransform(mEnteringTarget.leash, mEnteringRect, mCurrentAlpha);
mTransaction.apply();
});
}
if (mEnteringAnimator.isRunning()) {
return true;
}
if (mEnteringWindowShow == show) {
return false;
}
mEnteringWindowShow = show;
if (show) {
mEnteringAnimator.start();
} else {
mEnteringAnimator.reverse();
}
return true;
float progress = backEvent.getProgress();
float springProgress = (progress > PROGRESS_COMMIT_THRESHOLD
? mapLinear(progress, 0.1f, 1, TARGET_COMMIT_PROGRESS, 1)
: mapLinear(progress, 0, 1f, 0, TARGET_COMMIT_PROGRESS)) * SCALE_FACTOR;
mLeavingProgressSpring.animateToFinalPosition(springProgress);
mEnteringProgressSpring.animateToFinalPosition(springProgress);
}
private void onGestureCommitted() {
@@ -275,11 +251,9 @@ class CrossActivityAnimation {
finishAnimation();
return;
}
// End the fade in animation.
if (mEnteringAnimator != null && mEnteringAnimator.isRunning()) {
mEnteringAnimator.cancel();
}
// End the fade animations
mLeavingProgressSpring.cancel();
mEnteringProgressSpring.cancel();
// We enter phase 2 of the animation, the starting coordinates for phase 2 are the current
// coordinate of the gesture driven phase.
@@ -309,12 +283,79 @@ class CrossActivityAnimation {
float top = mapRange(progress, mEnteringStartRect.top, mStartTaskRect.top);
float width = mapRange(progress, mEnteringStartRect.width(), mStartTaskRect.width());
float height = mapRange(progress, mEnteringStartRect.height(), mStartTaskRect.height());
float alpha = mapRange(progress, mCurrentAlpha, 1.0f);
float alpha = mapRange(progress, mEnteringProgress, 1.0f);
mEnteringRect.set(left, top, left + width, top + height);
applyTransform(mEnteringTarget.leash, mEnteringRect, alpha);
}
private float getEnteringProgress() {
return mEnteringProgress * SCALE_FACTOR;
}
private void setEnteringProgress(float value) {
mEnteringProgress = value / SCALE_FACTOR;
if (mEnteringTarget != null && mEnteringTarget.leash != null) {
transformWithProgress(
mEnteringProgress,
Math.max(
smoothstep(ENTER_ALPHA_THRESHOLD, 1, mEnteringProgress),
MIN_WINDOW_ALPHA), /* alpha */
mEnteringTarget.leash,
mEnteringRect,
-mWindowXShift,
0
);
}
}
private float getLeavingProgress() {
return mLeavingProgress * SCALE_FACTOR;
}
private void setLeavingProgress(float value) {
mLeavingProgress = value / SCALE_FACTOR;
if (mClosingTarget != null && mClosingTarget.leash != null) {
transformWithProgress(
mLeavingProgress,
Math.max(
1 - smoothstep(0, ENTER_ALPHA_THRESHOLD, mLeavingProgress),
MIN_WINDOW_ALPHA),
mClosingTarget.leash,
mClosingRect,
0,
mWindowXShift
);
}
}
private void transformWithProgress(float progress, float alpha, SurfaceControl surface,
RectF targetRect, float deltaXMin, float deltaXMax) {
final float touchY = mTouchPos.y;
final int width = mStartTaskRect.width();
final int height = mStartTaskRect.height();
final float interpolatedProgress = INTERPOLATOR.getInterpolation(progress);
final float closingScale = MIN_WINDOW_SCALE
+ (1 - interpolatedProgress) * (1 - MIN_WINDOW_SCALE);
final float closingWidth = closingScale * width;
final float closingHeight = (float) height / width * closingWidth;
// Move the window along the X axis.
float closingLeft = mStartTaskRect.left + (width - closingWidth) / 2;
closingLeft += mapRange(interpolatedProgress, deltaXMin, deltaXMax);
// Move the window along the Y axis.
final float deltaYRatio = (touchY - mInitialTouchPos.y) / height;
final float closingTop = (height - closingHeight) * 0.5f;
targetRect.set(
closingLeft, closingTop, closingLeft + closingWidth, closingTop + closingHeight);
applyTransform(surface, targetRect, Math.max(alpha, MIN_WINDOW_ALPHA));
mTransaction.apply();
}
private final class Callback extends IOnBackInvokedCallback.Default {
@Override
public void onBackStarted(BackMotionEvent backEvent) {
@@ -330,10 +371,12 @@ class CrossActivityAnimation {
@Override
public void onBackCancelled() {
// End the fade in animation.
if (mEnteringAnimator != null && mEnteringAnimator.isRunning()) {
mEnteringAnimator.cancel();
}
mProgressAnimator.onBackCancelled(CrossActivityAnimation.this::finishAnimation);
mEnteringProgressSpring.cancel();
mLeavingProgressSpring.cancel();
// TODO (b259608500): Let BackProgressAnimator could play cancel animation.
mProgressAnimator.reset();
finishAnimation();
}
@Override