Merge "Attempt #3: Add smooth dimming transition for swapping in flexible split" into main (c8396e91) · Commits · e / os / android_frameworks_base

libs/WindowManager/Shell/src/com/android/wm/shell/common/split/ResizingEffectPolicy.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -222,6 +222,10 @@ class ResizingEffectPolicy {
		}
		}

		/**
		* Called on every frame while the user is dragging the divider to dismiss an app or move it
		* offscreen. Sets alpha and visibility on the two provided dim layers.
		*/
		void adjustDimSurface(SurfaceControl.Transaction t,
		SurfaceControl dimLayer1, SurfaceControl dimLayer2) {
		SurfaceControl targetDimLayer;

libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitLayout.java

+24 −0

Original line number	Diff line number	Diff line
		@@ -1086,6 +1086,11 @@ public final class SplitLayout implements DisplayInsetsController.OnInsetsChange
		final SurfaceControl leash = isApp ? stage.getRootLeash() : getDividerLeash();
		final ActivityManager.RunningTaskInfo taskInfo = isApp ? stage.getRunningTaskInfo() : null;
		final SplitDecorManager decorManager = isApp ? stage.getDecorManager() : null;
		final SurfaceControl dimLayer = isApp ? stage.getDimLayer() : null;
		boolean goingOffscreen = Flags.enableFlexibleTwoAppSplit()
		? !mSplitState.isOffscreen(start) && mSplitState.isOffscreen(end) : false;
		boolean comingOnscreen = Flags.enableFlexibleTwoAppSplit()
		? mSplitState.isOffscreen(start) && !mSplitState.isOffscreen(end) : false;

		Rect tempStart = new Rect(start);
		Rect tempEnd = new Rect(end);
		@@ -1207,6 +1212,25 @@ public final class SplitLayout implements DisplayInsetsController.OnInsetsChange
		taskInfo, mTempRect, t, isGoingBehind, leash, diffOffsetX, diffOffsetY);
		}
		}

		// App surfaces are dimmed when offscreen. So if the app is moving from onscreen to
		// offscreen or vice versa, we set the dim layer's alpha on every frame for a smooth
		// transition.
		if (Flags.enableFlexibleTwoAppSplit()
		&& mSplitState.currentStateSupportsOffscreenApps()
		&& dimLayer != null) {
		float instantaneousAlpha = 0f;
		if (goingOffscreen) {
		instantaneousAlpha = moveProgress * ResizingEffectPolicy.DEFAULT_OFFSCREEN_DIM;
		}
		if (comingOnscreen) {
		instantaneousAlpha =
		(1f - moveProgress) * ResizingEffectPolicy.DEFAULT_OFFSCREEN_DIM;
		}
		t.setAlpha(dimLayer, instantaneousAlpha);
		t.setVisibility(dimLayer, instantaneousAlpha > 0.001f);
		}

		t.apply();
		});
		return animator;

libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitSpec.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -53,6 +53,8 @@ public class SplitSpec {
		public static final float MIDDLE_RATIO = 0.5f;

		private final boolean mIsLeftRightSplit;
		/** The physical size of the display. */
		private final Rect mDisplayBounds;
		/** The usable display area, considering insets that affect split bounds. */
		private final RectF mUsableArea;
		/** Half the divider size. */
		@@ -65,6 +67,7 @@ public class SplitSpec {
		public SplitSpec(Rect displayBounds, int dividerSize, boolean isLeftRightSplit,
		Rect pinnedTaskbarInsets) {
		mIsLeftRightSplit = isLeftRightSplit;
		mDisplayBounds = new Rect(displayBounds);
		mUsableArea = new RectF(displayBounds);
		mUsableArea.left += pinnedTaskbarInsets.left;
		mUsableArea.top += pinnedTaskbarInsets.top;
		@@ -180,4 +183,9 @@ public class SplitSpec {
		List<RectF> getSpec(@SplitScreenState int state) {
		return mLayouts.get(state);
		}

		/** Returns whether a given Rect is partially offscreen on the current display. */
		boolean isOffscreen(Rect rect) {
		return !mDisplayBounds.contains(rect);
		}
		}

libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitState.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -73,6 +73,11 @@ public class SplitState {
		return getLayout(mState);
		}

		/** Returns whether a given Rect is partially offscreen on the current display. */
		boolean isOffscreen(Rect rect) {
		return mSplitSpec.isOffscreen(rect);
		}

		/** @return {@code true} if at least one app is partially offscreen in the current layout. */
		public boolean currentStateSupportsOffscreenApps() {
		return mState == SNAP_TO_2_10_90

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageTaskListener.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -196,6 +196,14 @@ public class StageTaskListener implements ShellTaskOrganizer.TaskListener {
		return mSplitDecorManager;
		}

		/**
		* Gets the leash for this task's dim layer. We manipulate this surface's alpha to dim the app
		* when it's moving offscreen or toward dismissal.
		*/
		public SurfaceControl getDimLayer() {
		return mDimLayer;
		}

		@Nullable
		private ActivityManager.RunningTaskInfo getChildTaskInfo(
		Predicate<ActivityManager.RunningTaskInfo> predicate) {