Merge "Handle reperenting of InlineContentView" into rvc-dev am: f8b9ddea71... (3e384624) · Commits · e / os / android_frameworks_base

api/test-current.txt

+13 −0

Original line number	Diff line number	Diff line
		@@ -5503,6 +5503,19 @@ package android.widget {

		}

		package android.widget.inline {

		public class InlineContentView extends android.view.ViewGroup {
		method public void setChildSurfacePackageUpdater(@Nullable android.widget.inline.InlineContentView.SurfacePackageUpdater);
		}

		public static interface InlineContentView.SurfacePackageUpdater {
		method public void getSurfacePackage(@NonNull java.util.function.Consumer<android.view.SurfaceControlViewHost.SurfacePackage>);
		method public void onSurfacePackageReleased();
		}

		}

		package android.window {

		public final class DisplayAreaInfo implements android.os.Parcelable {

core/java/android/view/SurfaceControl.java

+135 −10

Original line number	Diff line number	Diff line
		@@ -63,8 +63,10 @@ import dalvik.system.CloseGuard;
		import libcore.util.NativeAllocationRegistry;

		import java.io.Closeable;
		import java.lang.ref.WeakReference;
		import java.nio.ByteBuffer;
		import java.nio.ByteOrder;
		import java.util.ArrayList;
		import java.util.Objects;

		/**
		@@ -226,24 +228,86 @@ public final class SurfaceControl implements Parcelable {
		private static native void nativeSetFixedTransformHint(long transactionObj, long nativeObject,
		int transformHint);

		@Nullable
		@GuardedBy("sLock")
		private ArrayList<OnReparentListener> mReparentListeners;

		/**
		* Listener to observe surface reparenting.
		*
		* @hide
		*/
		public interface OnReparentListener {

		/**
		* Callback for reparenting surfaces.
		*
		* Important: You should only interact with the provided surface control
		* only if you have a contract with its owner to avoid them closing it
		* under you or vise versa.
		*
		* @param transaction The transaction that would commit reparenting.
		* @param parent The future parent surface.
		*/
		void onReparent(@NonNull Transaction transaction, @Nullable SurfaceControl parent);
		}

		private final CloseGuard mCloseGuard = CloseGuard.get();
		private String mName;

		/**
		* @hide
		*/
		public long mNativeObject;
		private long mNativeHandle;

		// TODO: Move this to native.
		private final Object mSizeLock = new Object();
		@GuardedBy("mSizeLock")
		// TODO: Move width/height to native and fix locking through out.
		private final Object mLock = new Object();
		@GuardedBy("mLock")
		private int mWidth;
		@GuardedBy("mSizeLock")
		@GuardedBy("mLock")
		private int mHeight;

		private WeakReference<View> mLocalOwnerView;

		static Transaction sGlobalTransaction;
		static long sTransactionNestCount = 0;

		/**
		* Adds a reparenting listener.
		*
		* @param listener The listener.
		* @return Whether listener was added.
		*
		* @hide
		*/
		public boolean addOnReparentListener(@NonNull OnReparentListener listener) {
		synchronized (mLock) {
		if (mReparentListeners == null) {
		mReparentListeners = new ArrayList<>(1);
		}
		return mReparentListeners.add(listener);
		}
		}

		/**
		* Removes a reparenting listener.
		*
		* @param listener The listener.
		* @return Whether listener was removed.
		*
		* @hide
		*/
		public boolean removeOnReparentListener(@NonNull OnReparentListener listener) {
		synchronized (mLock) {
		final boolean removed = mReparentListeners.remove(listener);
		if (mReparentListeners.isEmpty()) {
		mReparentListeners = null;
		}
		return removed;
		}
		}

		/* flags used in constructor (keep in sync with ISurfaceComposerClient.h) */

		/**
		@@ -455,6 +519,7 @@ public final class SurfaceControl implements Parcelable {
		mName = other.mName;
		mWidth = other.mWidth;
		mHeight = other.mHeight;
		mLocalOwnerView = other.mLocalOwnerView;
		assignNativeObject(nativeCopyFromSurfaceControl(other.mNativeObject));
		}

		@@ -547,6 +612,7 @@ public final class SurfaceControl implements Parcelable {
		private int mHeight;
		private int mFormat = PixelFormat.OPAQUE;
		private String mName;
		private WeakReference<View> mLocalOwnerView;
		private SurfaceControl mParent;
		private SparseIntArray mMetadata;

		@@ -581,7 +647,8 @@ public final class SurfaceControl implements Parcelable {
		"Only buffer layers can set a valid buffer size.");
		}
		return new SurfaceControl(
		mSession, mName, mWidth, mHeight, mFormat, mFlags, mParent, mMetadata);
		mSession, mName, mWidth, mHeight, mFormat, mFlags, mParent, mMetadata,
		mLocalOwnerView);
		}

		/**
		@@ -595,6 +662,27 @@ public final class SurfaceControl implements Parcelable {
		return this;
		}

		/**
		* Set the local owner view for the surface. This view is only
		* valid in the same process and is not transferred in an IPC.
		*
		* Note: This is used for cases where we want to know the view
		* that manages the surface control while intercepting reparenting.
		* A specific example is InlineContentView which exposes is surface
		* control for reparenting as a way to implement clipping of several
		* InlineContentView instances within a certain area.
		*
		* @param view The owner view.
		* @return This builder.
		*
		* @hide
		*/
		@NonNull
		public Builder setLocalOwnerView(@NonNull View view) {
		mLocalOwnerView = new WeakReference<>(view);
		return this;
		}

		/**
		* Set the initial size of the controlled surface's buffers in pixels.
		*
		@@ -852,7 +940,7 @@ public final class SurfaceControl implements Parcelable {
		* @throws throws OutOfResourcesException If the SurfaceControl cannot be created.
		*/
		private SurfaceControl(SurfaceSession session, String name, int w, int h, int format, int flags,
		SurfaceControl parent, SparseIntArray metadata)
		SurfaceControl parent, SparseIntArray metadata, WeakReference<View> localOwnerView)
		throws OutOfResourcesException, IllegalArgumentException {
		if (name == null) {
		throw new IllegalArgumentException("name must not be null");
		@@ -861,6 +949,7 @@ public final class SurfaceControl implements Parcelable {
		mName = name;
		mWidth = w;
		mHeight = h;
		mLocalOwnerView = localOwnerView;
		Parcel metaParcel = Parcel.obtain();
		try {
		if (metadata != null && metadata.size() > 0) {
		@@ -1301,7 +1390,7 @@ public final class SurfaceControl implements Parcelable {
		* @hide
		*/
		public int getWidth() {
		synchronized (mSizeLock) {
		synchronized (mLock) {
		return mWidth;
		}
		}
		@@ -1310,11 +1399,22 @@ public final class SurfaceControl implements Parcelable {
		* @hide
		*/
		public int getHeight() {
		synchronized (mSizeLock) {
		synchronized (mLock) {
		return mHeight;
		}
		}

		/**
		* Gets the local view that owns this surface.
		*
		* @return The owner view.
		*
		* @hide
		*/
		public @Nullable View getLocalOwnerView() {
		return (mLocalOwnerView != null) ? mLocalOwnerView.get() : null;
		}

		@Override
		public String toString() {
		return "Surface(name=" + mName + ")/@0x" +
		@@ -2159,6 +2259,9 @@ public final class SurfaceControl implements Parcelable {
		public long mNativeObject;

		private final ArrayMap<SurfaceControl, Point> mResizedSurfaces = new ArrayMap<>();
		private final ArrayMap<SurfaceControl, SurfaceControl> mReparentedSurfaces =
		new ArrayMap<>();

		Runnable mFreeNativeResources;
		private static final float[] INVALID_COLOR = {-1, -1, -1};

		@@ -2199,6 +2302,8 @@ public final class SurfaceControl implements Parcelable {
		*/
		@Override
		public void close() {
		mResizedSurfaces.clear();
		mReparentedSurfaces.clear();
		mFreeNativeResources.run();
		mNativeObject = 0;
		}
		@@ -2209,6 +2314,7 @@ public final class SurfaceControl implements Parcelable {
		*/
		public void apply(boolean sync) {
		applyResizedSurfaces();
		notifyReparentedSurfaces();
		nativeApplyTransaction(mNativeObject, sync);
		}

		@@ -2216,7 +2322,7 @@ public final class SurfaceControl implements Parcelable {
		for (int i = mResizedSurfaces.size() - 1; i >= 0; i--) {
		final Point size = mResizedSurfaces.valueAt(i);
		final SurfaceControl surfaceControl = mResizedSurfaces.keyAt(i);
		synchronized (surfaceControl.mSizeLock) {
		synchronized (surfaceControl.mLock) {
		surfaceControl.mWidth = size.x;
		surfaceControl.mHeight = size.y;
		}
		@@ -2224,6 +2330,22 @@ public final class SurfaceControl implements Parcelable {
		mResizedSurfaces.clear();
		}

		private void notifyReparentedSurfaces() {
		final int reparentCount = mReparentedSurfaces.size();
		for (int i = reparentCount - 1; i >= 0; i--) {
		final SurfaceControl child = mReparentedSurfaces.keyAt(i);
		synchronized (child.mLock) {
		final int listenerCount = (child.mReparentListeners != null)
		? child.mReparentListeners.size() : 0;
		for (int j = 0; j < listenerCount; j++) {
		final OnReparentListener listener = child.mReparentListeners.get(j);
		listener.onReparent(this, mReparentedSurfaces.valueAt(i));
		}
		mReparentedSurfaces.removeAt(i);
		}
		}
		}

		/**
		* Toggle the visibility of a given Layer and it's sub-tree.
		*
		@@ -2626,6 +2748,7 @@ public final class SurfaceControl implements Parcelable {
		otherObject = newParent.mNativeObject;
		}
		nativeReparent(mNativeObject, sc.mNativeObject, otherObject);
		mReparentedSurfaces.put(sc, newParent);
		return this;
		}

		@@ -2906,6 +3029,8 @@ public final class SurfaceControl implements Parcelable {
		}
		mResizedSurfaces.putAll(other.mResizedSurfaces);
		other.mResizedSurfaces.clear();
		mReparentedSurfaces.putAll(other.mReparentedSurfaces);
		other.mReparentedSurfaces.clear();
		nativeMergeTransaction(mNativeObject, other.mNativeObject);
		return this;
		}

core/java/android/view/SurfaceView.java

+57 −11

Original line number	Diff line number	Diff line
		@@ -44,7 +44,6 @@ import android.os.SystemClock;
		import android.util.AttributeSet;
		import android.util.Log;
		import android.view.SurfaceControl.Transaction;
		import android.view.SurfaceControlViewHost;
		import android.view.accessibility.AccessibilityNodeInfo;
		import android.view.accessibility.IAccessibilityEmbeddedConnection;

		@@ -988,6 +987,7 @@ public class SurfaceView extends View implements ViewRootImpl.SurfaceChangedCall

		mSurfaceControl = new SurfaceControl.Builder(mSurfaceSession)
		.setName(name)
		.setLocalOwnerView(this)
		.setOpaque((mSurfaceFlags & SurfaceControl.OPAQUE) != 0)
		.setBufferSize(mSurfaceWidth, mSurfaceHeight)
		.setFormat(mFormat)
		@@ -996,6 +996,7 @@ public class SurfaceView extends View implements ViewRootImpl.SurfaceChangedCall
		.build();
		mBackgroundControl = new SurfaceControl.Builder(mSurfaceSession)
		.setName("Background for -" + name)
		.setLocalOwnerView(this)
		.setOpaque(true)
		.setColorLayer()
		.setParent(mSurfaceControl)
		@@ -1051,11 +1052,12 @@ public class SurfaceView extends View implements ViewRootImpl.SurfaceChangedCall
		// we still need to latch a buffer).
		// b/28866173
		if (sizeChanged \|\| creating \|\| !mRtHandlingPositionUpdates) {
		mTmpTransaction.setPosition(mSurfaceControl, mScreenRect.left,
		mScreenRect.top);
		mTmpTransaction.setMatrix(mSurfaceControl,
		mScreenRect.width() / (float) mSurfaceWidth, 0.0f, 0.0f,
		mScreenRect.height() / (float) mSurfaceHeight);
		onSetSurfacePositionAndScaleRT(mTmpTransaction, mSurfaceControl,
		mScreenRect.left, /positionLeft/
		mScreenRect.top /positionTop/ ,
		mScreenRect.width() / (float) mSurfaceWidth /postScaleX/,
		mScreenRect.height() / (float) mSurfaceHeight /postScaleY/);

		// Set a window crop when creating the surface or changing its size to
		// crop the buffer to the surface size since the buffer producer may
		// use SCALING_MODE_SCALE and submit a larger size than the surface
		@@ -1211,6 +1213,40 @@ public class SurfaceView extends View implements ViewRootImpl.SurfaceChangedCall
		Surface viewRootSurface, long nextViewRootFrameNumber) {
		}

		/**
		* Sets the surface position and scale. Can be called on
		* the UI thread as well as on the renderer thread.
		*
		* @param transaction Transaction in which to execute.
		* @param surface Surface whose location to set.
		* @param positionLeft The left position to set.
		* @param positionTop The top position to set.
		* @param postScaleX The X axis post scale
		* @param postScaleY The Y axis post scale
		*
		* @hide
		*/
		protected void onSetSurfacePositionAndScaleRT(@NonNull Transaction transaction,
		@NonNull SurfaceControl surface, int positionLeft, int positionTop,
		float postScaleX, float postScaleY) {
		transaction.setPosition(surface, positionLeft, positionTop);
		transaction.setMatrix(surface, postScaleX /dsdx/, 0f /dtdx/,
		0f /dsdy/, postScaleY /dtdy/);
		}

		/** @hide */
		public void requestUpdateSurfacePositionAndScale() {
		if (mSurfaceControl == null) {
		return;
		}
		onSetSurfacePositionAndScaleRT(mTmpTransaction, mSurfaceControl,
		mScreenRect.left, /positionLeft/
		mScreenRect.top/positionTop/ ,
		mScreenRect.width() / (float) mSurfaceWidth /postScaleX/,
		mScreenRect.height() / (float) mSurfaceHeight /postScaleY/);
		mTmpTransaction.apply();
		}

		private void applySurfaceTransforms(SurfaceControl surface, SurfaceControl.Transaction t,
		Rect position, long frameNumber) {
		final ViewRootImpl viewRoot = getViewRootImpl();
		@@ -1219,16 +1255,26 @@ public class SurfaceView extends View implements ViewRootImpl.SurfaceChangedCall
		frameNumber);
		}

		t.setPosition(surface, position.left, position.top);
		t.setMatrix(surface,
		position.width() / (float) mSurfaceWidth,
		0.0f, 0.0f,
		position.height() / (float) mSurfaceHeight);
		onSetSurfacePositionAndScaleRT(t, surface,
		position.left /positionLeft/,
		position.top /positionTop/,
		position.width() / (float) mSurfaceWidth /postScaleX/,
		position.height() / (float) mSurfaceHeight /postScaleY/);

		if (mViewVisibility) {
		t.show(surface);
		}
		}

		/**
		* @return The last render position of the backing surface or an empty rect.
		*
		* @hide
		*/
		public @NonNull Rect getSurfaceRenderPosition() {
		return mRTLastReportedPosition;
		}

		private void setParentSpaceRectangle(Rect position, long frameNumber) {
		final ViewRootImpl viewRoot = getViewRootImpl();
		final boolean useBLAST = viewRoot.isDrawingToBLASTTransaction();

core/java/android/widget/inline/InlineContentView.java

+145 −18

Original line number	Diff line number	Diff line
		@@ -18,18 +18,22 @@ package android.widget.inline;

		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.annotation.TestApi;
		import android.content.Context;
		import android.graphics.PixelFormat;
		import android.graphics.Rect;
		import android.graphics.PointF;
		import android.util.AttributeSet;
		import android.util.Log;
		import android.view.SurfaceControl;
		import android.view.SurfaceControlViewHost;
		import android.view.SurfaceHolder;
		import android.view.SurfaceView;
		import android.view.View;
		import android.view.ViewGroup;
		import android.view.ViewTreeObserver.OnPreDrawListener;
		import android.view.ViewTreeObserver;

		import java.lang.ref.WeakReference;
		import java.util.function.Consumer;

		/**
		@@ -88,8 +92,10 @@ public class InlineContentView extends ViewGroup {
		*
		* @hide
		*/
		@TestApi
		public interface SurfacePackageUpdater {


		/**
		* Called when the previous surface package is released due to view being detached
		* from the window.
		@@ -101,14 +107,16 @@ public class InlineContentView extends ViewGroup {
		*
		* @param consumer consumes the updated surface package.
		*/
		void getSurfacePackage(Consumer<SurfaceControlViewHost.SurfacePackage> consumer);
		void getSurfacePackage(@NonNull Consumer<SurfaceControlViewHost.SurfacePackage> consumer);
		}

		@NonNull
		private final SurfaceHolder.Callback mSurfaceCallback = new SurfaceHolder.Callback() {
		@Override
		public void surfaceCreated(@NonNull SurfaceHolder holder) {
		mSurfaceControlCallback.onCreated(mSurfaceView.getSurfaceControl());
		final SurfaceControl surfaceControl = mSurfaceView.getSurfaceControl();
		surfaceControl.addOnReparentListener(mOnReparentListener);
		mSurfaceControlCallback.onCreated(surfaceControl);
		}

		@Override
		@@ -119,29 +127,58 @@ public class InlineContentView extends ViewGroup {

		@Override
		public void surfaceDestroyed(@NonNull SurfaceHolder holder) {
		mSurfaceControlCallback.onDestroyed(mSurfaceView.getSurfaceControl());
		final SurfaceControl surfaceControl = mSurfaceView.getSurfaceControl();
		surfaceControl.removeOnReparentListener(mOnReparentListener);
		mSurfaceControlCallback.onDestroyed(surfaceControl);
		}
		};

		@NonNull
		private final SurfaceControl.OnReparentListener mOnReparentListener =
		new SurfaceControl.OnReparentListener() {
		@Override
		public void onReparent(SurfaceControl.Transaction transaction,
		SurfaceControl parent) {
		final View parentSurfaceOwnerView = (parent != null)
		? parent.getLocalOwnerView() : null;
		if (parentSurfaceOwnerView instanceof SurfaceView) {
		mParentSurfaceOwnerView = new WeakReference<>(
		(SurfaceView) parentSurfaceOwnerView);
		} else {
		mParentSurfaceOwnerView = null;
		}
		}
		};

		@NonNull
		private final ViewTreeObserver.OnDrawListener mOnDrawListener =
		new ViewTreeObserver.OnDrawListener() {
		@Override
		public void onDraw() {
		computeParentPositionAndScale();
		final int visibility = InlineContentView.this.isShown() ? VISIBLE : GONE;
		mSurfaceView.setVisibility(visibility);
		}
		};

		@NonNull
		private final SurfaceView mSurfaceView;

		@Nullable
		private WeakReference<SurfaceView> mParentSurfaceOwnerView;

		@Nullable
		private int[] mParentPosition;

		@Nullable
		private PointF mParentScale;

		@Nullable
		private SurfaceControlCallback mSurfaceControlCallback;

		@Nullable
		private SurfacePackageUpdater mSurfacePackageUpdater;

		@NonNull
		private final OnPreDrawListener mDrawListener = new OnPreDrawListener() {
		@Override
		public boolean onPreDraw() {
		int visibility = InlineContentView.this.isShown() ? VISIBLE : GONE;
		mSurfaceView.setVisibility(visibility);
		return true;
		}
		};

		/**
		* @inheritDoc
		* @hide
		@@ -192,10 +229,33 @@ public class InlineContentView extends ViewGroup {
		public InlineContentView(@NonNull Context context, @Nullable AttributeSet attrs,
		int defStyleAttr, int defStyleRes) {
		super(context, attrs, defStyleAttr, defStyleRes);
		mSurfaceView = new SurfaceView(context, attrs, defStyleAttr, defStyleRes);
		mSurfaceView = new SurfaceView(context, attrs, defStyleAttr, defStyleRes) {
		@Override
		protected void onSetSurfacePositionAndScaleRT(
		@NonNull SurfaceControl.Transaction transaction,
		@NonNull SurfaceControl surface, int positionLeft, int positionTop,
		float postScaleX, float postScaleY) {
		// If we have a parent position, we need to make our coordinates relative
		// to the parent in the rendering space.
		if (mParentPosition != null) {
		positionLeft = (int) ((positionLeft - mParentPosition[0]) / mParentScale.x);
		positionTop = (int) ((positionTop - mParentPosition[1]) / mParentScale.y);
		}

		// Any scaling done to the parent or its predecessors would be applied
		// via the surfaces parent -> child relation, so we only propagate any
		// scaling set on the InlineContentView itself.
		postScaleX = InlineContentView.this.getScaleX();
		postScaleY = InlineContentView.this.getScaleY();

		super.onSetSurfacePositionAndScaleRT(transaction, surface, positionLeft,
		positionTop, postScaleX, postScaleY);
		}
		};
		mSurfaceView.setZOrderOnTop(true);
		mSurfaceView.getHolder().setFormat(PixelFormat.TRANSPARENT);
		addView(mSurfaceView);
		setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
		}

		/**
		@@ -203,6 +263,7 @@ public class InlineContentView extends ViewGroup {
		*
		* @hide
		*/
		@TestApi
		public void setChildSurfacePackageUpdater(
		@Nullable SurfacePackageUpdater surfacePackageUpdater) {
		mSurfacePackageUpdater = surfacePackageUpdater;
		@@ -221,8 +282,9 @@ public class InlineContentView extends ViewGroup {
		}
		});
		}
		mSurfaceView.setVisibility(VISIBLE);
		getViewTreeObserver().addOnPreDrawListener(mDrawListener);

		mSurfaceView.setVisibility(getVisibility());
		getViewTreeObserver().addOnDrawListener(mOnDrawListener);
		}

		@Override
		@@ -232,7 +294,9 @@ public class InlineContentView extends ViewGroup {
		if (mSurfacePackageUpdater != null) {
		mSurfacePackageUpdater.onSurfacePackageReleased();
		}
		getViewTreeObserver().removeOnPreDrawListener(mDrawListener);

		getViewTreeObserver().removeOnDrawListener(mOnDrawListener);
		mSurfaceView.setVisibility(View.GONE);
		}

		@Override
		@@ -279,4 +343,67 @@ public class InlineContentView extends ViewGroup {
		public boolean setZOrderedOnTop(boolean onTop) {
		return mSurfaceView.setZOrderedOnTop(onTop, /allowDynamicChange/ true);
		}


		private void computeParentPositionAndScale() {
		boolean contentPositionOrScaleChanged = false;

		// This method can be called on the UI or render thread but for the cases
		// it is called these threads are not running concurrently, so no need to lock.
		final SurfaceView parentSurfaceOwnerView = (mParentSurfaceOwnerView != null)
		? mParentSurfaceOwnerView.get() : null;

		if (parentSurfaceOwnerView != null) {
		if (mParentPosition == null) {
		mParentPosition = new int[2];
		}
		final int oldParentPositionX = mParentPosition[0];
		final int oldParentPositionY = mParentPosition[1];
		parentSurfaceOwnerView.getLocationInSurface(mParentPosition);
		if (oldParentPositionX != mParentPosition[0]
		\|\| oldParentPositionY != mParentPosition[1]) {
		contentPositionOrScaleChanged = true;
		}

		if (mParentScale == null) {
		mParentScale = new PointF();
		}

		final float lastParentSurfaceWidth = parentSurfaceOwnerView
		.getSurfaceRenderPosition().width();
		final float oldParentScaleX = mParentScale.x;
		if (lastParentSurfaceWidth > 0) {
		mParentScale.x = lastParentSurfaceWidth /
		(float) parentSurfaceOwnerView.getWidth();
		} else {
		mParentScale.x = 1.0f;
		}
		if (!contentPositionOrScaleChanged
		&& Float.compare(oldParentScaleX, mParentScale.x) != 0) {
		contentPositionOrScaleChanged = true;
		}

		final float lastParentSurfaceHeight = parentSurfaceOwnerView
		.getSurfaceRenderPosition().height();
		final float oldParentScaleY = mParentScale.y;
		if (lastParentSurfaceHeight > 0) {
		mParentScale.y = lastParentSurfaceHeight
		/ (float) parentSurfaceOwnerView.getHeight();
		} else {
		mParentScale.y = 1.0f;
		}
		if (!contentPositionOrScaleChanged
		&& Float.compare(oldParentScaleY, mParentScale.y) != 0) {
		contentPositionOrScaleChanged = true;
		}
		} else if (mParentPosition != null \|\| mParentScale != null) {
		contentPositionOrScaleChanged = true;
		mParentPosition = null;
		mParentScale = null;
		}

		if (contentPositionOrScaleChanged) {
		mSurfaceView.requestUpdateSurfacePositionAndScale();
		}
		}
		}