am b922da84
: Merge "Fix bimanual gesture preview trail" into jb-mr1-dev
* commit 'b922da847c3ce82b82e445baad5a6c01159608ad': Fix bimanual gesture preview trail
This commit is contained in:
commit
2554fe1ed1
3 changed files with 20 additions and 22 deletions
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@ -573,6 +573,7 @@ public class PointerTracker implements PointerTrackerQueue.Element {
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private void endBatchInput() {
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synchronized (sAggregratedPointers) {
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mGestureStrokeWithPreviewTrail.appendAllBatchPoints(sAggregratedPointers);
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mGestureStrokeWithPreviewTrail.reset();
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if (getActivePointerTrackerCount() == 1) {
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if (DEBUG_LISTENER) {
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Log.d(TAG, "onEndBatchInput: batchPoints="
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@ -33,15 +33,10 @@ final class GesturePreviewTrail {
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private final ResizableIntArray mYCoordinates = new ResizableIntArray(DEFAULT_CAPACITY);
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private final ResizableIntArray mEventTimes = new ResizableIntArray(DEFAULT_CAPACITY);
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private int mCurrentStrokeId = -1;
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private long mCurrentDownTime;
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// The wall time of the zero value in {@link #mEventTimes}
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private long mCurrentTimeBase;
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private int mTrailStartIndex;
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private final static Xfermode PORTER_DUFF_MODE_SRC =
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new PorterDuffXfermode(PorterDuff.Mode.SRC);
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// Use this value as imaginary zero because x-coordinates may be zero.
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private static final int DOWN_EVENT_MARKER = -128;
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static final class Params {
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public final int mTrailColor;
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public final float mTrailStartWidth;
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@ -69,6 +64,9 @@ final class GesturePreviewTrail {
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}
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}
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// Use this value as imaginary zero because x-coordinates may be zero.
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private static final int DOWN_EVENT_MARKER = -128;
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private static int markAsDownEvent(final int xCoord) {
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return DOWN_EVENT_MARKER - xCoord;
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}
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@ -83,26 +81,23 @@ final class GesturePreviewTrail {
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}
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public void addStroke(final GestureStrokeWithPreviewTrail stroke, final long downTime) {
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final int strokeId = stroke.getGestureStrokeId();
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final boolean isNewStroke = strokeId != mCurrentStrokeId;
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final int trailSize = mEventTimes.getLength();
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stroke.appendPreviewStroke(mEventTimes, mXCoordinates, mYCoordinates);
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final int newTrailSize = mEventTimes.getLength();
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if (stroke.getGestureStrokePreviewSize() == 0) {
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if (mEventTimes.getLength() == trailSize) {
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return;
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}
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if (isNewStroke) {
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final int elapsedTime = (int)(downTime - mCurrentDownTime);
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final int[] eventTimes = mEventTimes.getPrimitiveArray();
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final int[] eventTimes = mEventTimes.getPrimitiveArray();
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final int strokeId = stroke.getGestureStrokeId();
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if (strokeId != mCurrentStrokeId) {
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final int elapsedTime = (int)(downTime - mCurrentTimeBase);
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for (int i = mTrailStartIndex; i < trailSize; i++) {
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// Decay the previous strokes' event times.
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eventTimes[i] -= elapsedTime;
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}
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if (newTrailSize > trailSize) {
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final int[] xCoords = mXCoordinates.getPrimitiveArray();
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xCoords[trailSize] = markAsDownEvent(xCoords[trailSize]);
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}
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mCurrentDownTime = downTime;
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final int[] xCoords = mXCoordinates.getPrimitiveArray();
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final int downIndex = trailSize;
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xCoords[downIndex] = markAsDownEvent(xCoords[downIndex]);
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mCurrentTimeBase = downTime - eventTimes[downIndex];
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mCurrentStrokeId = strokeId;
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}
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}
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@ -123,6 +118,9 @@ final class GesturePreviewTrail {
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/ params.mTrailLingerDuration, 0.0f);
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}
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private final static Xfermode PORTER_DUFF_MODE_SRC =
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new PorterDuffXfermode(PorterDuff.Mode.SRC);
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/**
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* Draw gesture preview trail
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* @param canvas The canvas to draw the gesture preview trail
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@ -139,7 +137,7 @@ final class GesturePreviewTrail {
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final int[] eventTimes = mEventTimes.getPrimitiveArray();
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final int[] xCoords = mXCoordinates.getPrimitiveArray();
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final int[] yCoords = mYCoordinates.getPrimitiveArray();
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final int sinceDown = (int)(SystemClock.uptimeMillis() - mCurrentDownTime);
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final int sinceDown = (int)(SystemClock.uptimeMillis() - mCurrentTimeBase);
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int startIndex;
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for (startIndex = mTrailStartIndex; startIndex < trailSize; startIndex++) {
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final int elapsedTime = sinceDown - eventTimes[startIndex];
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@ -158,7 +158,6 @@ public class PreviewPlacerView extends RelativeLayout {
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final Paint textPaint = new Paint();
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textPaint.setAntiAlias(true);
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textPaint.setStyle(Paint.Style.FILL);
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textPaint.setTextAlign(Align.CENTER);
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textPaint.setTextSize(gestureFloatingPreviewTextSize);
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mTextPaint = textPaint;
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