Add a new OnDrawListener to ViewRoot (25eba5c5) · Commits · e / os / android_frameworks_base

api/current.txt

+7 −0

Original line number	Diff line number	Diff line
		@@ -24138,15 +24138,18 @@ package android.view {
		}

		public final class ViewTreeObserver {
		method public void addOnDrawListener(android.view.ViewTreeObserver.OnDrawListener);
		method public void addOnGlobalFocusChangeListener(android.view.ViewTreeObserver.OnGlobalFocusChangeListener);
		method public void addOnGlobalLayoutListener(android.view.ViewTreeObserver.OnGlobalLayoutListener);
		method public void addOnPreDrawListener(android.view.ViewTreeObserver.OnPreDrawListener);
		method public void addOnScrollChangedListener(android.view.ViewTreeObserver.OnScrollChangedListener);
		method public void addOnTouchModeChangeListener(android.view.ViewTreeObserver.OnTouchModeChangeListener);
		method public final void dispatchOnDraw();
		method public final void dispatchOnGlobalLayout();
		method public final boolean dispatchOnPreDraw();
		method public boolean isAlive();
		method public deprecated void removeGlobalOnLayoutListener(android.view.ViewTreeObserver.OnGlobalLayoutListener);
		method public void removeOnDrawListener(android.view.ViewTreeObserver.OnDrawListener);
		method public void removeOnGlobalFocusChangeListener(android.view.ViewTreeObserver.OnGlobalFocusChangeListener);
		method public void removeOnGlobalLayoutListener(android.view.ViewTreeObserver.OnGlobalLayoutListener);
		method public void removeOnPreDrawListener(android.view.ViewTreeObserver.OnPreDrawListener);
		@@ -24154,6 +24157,10 @@ package android.view {
		method public void removeOnTouchModeChangeListener(android.view.ViewTreeObserver.OnTouchModeChangeListener);
		}

		public static abstract interface ViewTreeObserver.OnDrawListener {
		method public abstract void onDraw();
		}

		public static abstract interface ViewTreeObserver.OnGlobalFocusChangeListener {
		method public abstract void onGlobalFocusChanged(android.view.View, android.view.View);
		}

core/java/android/view/ViewRootImpl.java

+145 −132

Original line number	Diff line number	Diff line
		@@ -2039,9 +2039,10 @@ public final class ViewRootImpl implements ViewParent,

		scrollToRectOrFocus(null, false);

		if (mAttachInfo.mViewScrollChanged) {
		mAttachInfo.mViewScrollChanged = false;
		mAttachInfo.mTreeObserver.dispatchOnScrollChanged();
		final AttachInfo attachInfo = mAttachInfo;
		if (attachInfo.mViewScrollChanged) {
		attachInfo.mViewScrollChanged = false;
		attachInfo.mTreeObserver.dispatchOnScrollChanged();
		}

		int yoff;
		@@ -2056,8 +2057,8 @@ public final class ViewRootImpl implements ViewParent,
		fullRedrawNeeded = true;
		}

		final float appScale = mAttachInfo.mApplicationScale;
		final boolean scalingRequired = mAttachInfo.mScalingRequired;
		final float appScale = attachInfo.mApplicationScale;
		final boolean scalingRequired = attachInfo.mScalingRequired;

		int resizeAlpha = 0;
		if (mResizeBuffer != null) {
		@@ -2086,7 +2087,7 @@ public final class ViewRootImpl implements ViewParent,
		}

		if (fullRedrawNeeded) {
		mAttachInfo.mIgnoreDirtyState = true;
		attachInfo.mIgnoreDirtyState = true;
		dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f));
		}

		@@ -2099,8 +2100,10 @@ public final class ViewRootImpl implements ViewParent,
		appScale + ", width=" + mWidth + ", height=" + mHeight);
		}

		attachInfo.mTreeObserver.dispatchOnDraw();

		if (!dirty.isEmpty() \|\| mIsAnimating) {
		if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) {
		if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) {
		// Draw with hardware renderer.
		mIsAnimating = false;
		mHardwareYOffset = yoff;
		@@ -2111,11 +2114,27 @@ public final class ViewRootImpl implements ViewParent,
		mPreviousDirty.set(dirty);
		dirty.setEmpty();

		if (mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this,
		if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this,
		animating ? null : mCurrentDirty)) {
		mPreviousDirty.set(0, 0, mWidth, mHeight);
		}
		} else {
		} else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) {
		return;
		}
		}

		if (animating) {
		mFullRedrawNeeded = true;
		scheduleTraversals();
		}
		}

		/**
		* @return true if drawing was succesful, false if an error occured
		*/
		private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff,
		boolean scalingRequired, Rect dirty) {

		// Draw with software renderer.
		Canvas canvas;
		try {
		@@ -2139,7 +2158,7 @@ public final class ViewRootImpl implements ViewParent,

		if (left != dirty.left \|\| top != dirty.top \|\| right != dirty.right \|\|
		bottom != dirty.bottom) {
		mAttachInfo.mIgnoreDirtyState = true;
		attachInfo.mIgnoreDirtyState = true;
		}

		// TODO: Do this in native
		@@ -2154,14 +2173,14 @@ public final class ViewRootImpl implements ViewParent,
		} catch (RemoteException ex) {
		}
		mLayoutRequested = true; // ask wm for a new surface next time.
		return;
		return false;
		} catch (IllegalArgumentException e) {
		Log.e(TAG, "IllegalArgumentException locking surface", e);
		// Don't assume this is due to out of memory, it could be
		// something else, and if it is something else then we could
		// kill stuff (or ourself) for no reason.
		mLayoutRequested = true; // ask wm for a new surface next time.
		return;
		return false;
		}

		try {
		@@ -2190,7 +2209,7 @@ public final class ViewRootImpl implements ViewParent,

		dirty.setEmpty();
		mIsAnimating = false;
		mAttachInfo.mDrawingTime = SystemClock.uptimeMillis();
		attachInfo.mDrawingTime = SystemClock.uptimeMillis();
		mView.mPrivateFlags \|= View.DRAWN;

		if (DEBUG_DRAW) {
		@@ -2206,7 +2225,7 @@ public final class ViewRootImpl implements ViewParent,
		}
		canvas.setScreenDensity(scalingRequired
		? DisplayMetrics.DENSITY_DEVICE : 0);
		mAttachInfo.mSetIgnoreDirtyState = false;
		attachInfo.mSetIgnoreDirtyState = false;

		final long drawStartTime;
		if (ViewDebug.DEBUG_LATENCY) {
		@@ -2221,9 +2240,9 @@ public final class ViewRootImpl implements ViewParent,
		+ ((now - drawStartTime) * 0.000001f) + "ms");
		}
		} finally {
		if (!mAttachInfo.mSetIgnoreDirtyState) {
		if (!attachInfo.mSetIgnoreDirtyState) {
		// Only clear the flag if it was not set during the mView.draw() call
		mAttachInfo.mIgnoreDirtyState = false;
		attachInfo.mIgnoreDirtyState = false;
		}
		}

		@@ -2252,13 +2271,7 @@ public final class ViewRootImpl implements ViewParent,
		Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost");
		}
		}
		}
		}

		if (animating) {
		mFullRedrawNeeded = true;
		scheduleTraversals();
		}
		return true;
		}

		void invalidateDisplayLists() {

core/java/android/view/ViewTreeObserver.java

+94 −25

Original line number	Diff line number	Diff line
		@@ -38,6 +38,7 @@ public final class ViewTreeObserver {
		private CopyOnWriteArrayList<OnComputeInternalInsetsListener> mOnComputeInternalInsetsListeners;
		private CopyOnWriteArrayList<OnScrollChangedListener> mOnScrollChangedListeners;
		private ArrayList<OnPreDrawListener> mOnPreDrawListeners;
		private ArrayList<OnDrawListener> mOnDrawListeners;

		private boolean mAlive = true;

		@@ -89,6 +90,27 @@ public final class ViewTreeObserver {
		public boolean onPreDraw();
		}

		/**
		* Interface definition for a callback to be invoked when the view tree is about to be drawn.
		*/
		public interface OnDrawListener {
		/**
		* <p>Callback method to be invoked when the view tree is about to be drawn. At this point,
		* views cannot be modified in any way.</p>
		*
		* <p>Unlike with {@link OnPreDrawListener}, this method cannot be used to cancel the
		* current drawing pass.</p>
		*
		* <p>An {@link OnDrawListener} listener <strong>cannot be added or removed</strong>
		* from this method.</p>
		*
		* @see android.view.View#onMeasure
		* @see android.view.View#onLayout
		* @see android.view.View#onDraw
		*/
		public void onDraw();
		}

		/**
		* Interface definition for a callback to be invoked when the touch mode changes.
		*/
		@@ -172,10 +194,6 @@ public final class ViewTreeObserver {
		mTouchableInsets = val;
		}

		public int getTouchableInsets() {
		return mTouchableInsets;
		}

		int mTouchableInsets;

		void reset() {
		@@ -186,25 +204,24 @@ public final class ViewTreeObserver {
		}

		@Override
		public boolean equals(Object o) {
		try {
		if (o == null) {
		return false;
		public int hashCode() {
		int result = contentInsets != null ? contentInsets.hashCode() : 0;
		result = 31 * result + (visibleInsets != null ? visibleInsets.hashCode() : 0);
		result = 31 * result + (touchableRegion != null ? touchableRegion.hashCode() : 0);
		result = 31 * result + mTouchableInsets;
		return result;
		}

		@Override
		public boolean equals(Object o) {
		if (this == o) return true;
		if (o == null \|\| getClass() != o.getClass()) return false;

		InternalInsetsInfo other = (InternalInsetsInfo)o;
		if (mTouchableInsets != other.mTouchableInsets) {
		return false;
		}
		if (!contentInsets.equals(other.contentInsets)) {
		return false;
		}
		if (!visibleInsets.equals(other.visibleInsets)) {
		return false;
		}
		return touchableRegion.equals(other.touchableRegion);
		} catch (ClassCastException e) {
		return false;
		}
		return mTouchableInsets == other.mTouchableInsets &&
		contentInsets.equals(other.contentInsets) &&
		visibleInsets.equals(other.visibleInsets) &&
		touchableRegion.equals(other.touchableRegion);
		}

		void set(InternalInsetsInfo other) {
		@@ -419,6 +436,44 @@ public final class ViewTreeObserver {
		mOnPreDrawListeners.remove(victim);
		}

		/**
		* <p>Register a callback to be invoked when the view tree is about to be drawn.</p>
		* <p><strong>Note:</strong> this method <strong>cannot</strong> be invoked from
		* {@link android.view.ViewTreeObserver.OnDrawListener#onDraw()}.</p>
		*
		* @param listener The callback to add
		*
		* @throws IllegalStateException If {@link #isAlive()} returns false
		*/
		public void addOnDrawListener(OnDrawListener listener) {
		checkIsAlive();

		if (mOnDrawListeners == null) {
		mOnDrawListeners = new ArrayList<OnDrawListener>();
		}

		mOnDrawListeners.add(listener);
		}

		/**
		* <p>Remove a previously installed pre-draw callback.</p>
		* <p><strong>Note:</strong> this method <strong>cannot</strong> be invoked from
		* {@link android.view.ViewTreeObserver.OnDrawListener#onDraw()}.</p>
		*
		* @param victim The callback to remove
		*
		* @throws IllegalStateException If {@link #isAlive()} returns false
		*
		* @see #addOnDrawListener(OnDrawListener)
		*/
		public void removeOnDrawListener(OnDrawListener victim) {
		checkIsAlive();
		if (mOnDrawListeners == null) {
		return;
		}
		mOnDrawListeners.remove(victim);
		}

		/**
		* Register a callback to be invoked when a view has been scrolled.
		*
		@@ -601,6 +656,7 @@ public final class ViewTreeObserver {
		*
		* @return True if the current draw should be canceled and resceduled, false otherwise.
		*/
		@SuppressWarnings("unchecked")
		public final boolean dispatchOnPreDraw() {
		// NOTE: we must clone the listener list to perform the dispatching.
		// The clone is a safe guard against listeners that
		@@ -618,6 +674,19 @@ public final class ViewTreeObserver {
		return cancelDraw;
		}

		/**
		* Notifies registered listeners that the drawing pass is about to start.
		*/
		public final void dispatchOnDraw() {
		if (mOnDrawListeners != null) {
		final ArrayList<OnDrawListener> listeners = mOnDrawListeners;
		int numListeners = listeners.size();
		for (int i = 0; i < numListeners; ++i) {
		listeners.get(i).onDraw();
		}
		}
		}

		/**
		* Notifies registered listeners that the touch mode has changed.
		*