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Fix bimanual gesture preview trail 

Bug: 7122288
Change-Id: I9f0aabe08628880a8439bfda98844ae60206b8de
main
Tadashi G. Takaoka 2012-09-07 13:25:34 +09:00
parent 3051966b8c
commit f117f77766
3 changed files with 20 additions and 22 deletions
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1
java/src/com/android/inputmethod/keyboard/PointerTracker.java
View File

@ -573,6 +573,7 @@ public class PointerTracker implements PointerTrackerQueue.Element {
private void endBatchInput() {
synchronized (sAggregratedPointers) {
mGestureStrokeWithPreviewTrail.appendAllBatchPoints(sAggregratedPointers);
mGestureStrokeWithPreviewTrail.reset();
if (getActivePointerTrackerCount() == 1) {
if (DEBUG_LISTENER) {
Log.d(TAG, "onEndBatchInput: batchPoints="

36
java/src/com/android/inputmethod/keyboard/internal/GesturePreviewTrail.java
View File

@ -33,15 +33,10 @@ final class GesturePreviewTrail {
private final ResizableIntArray mYCoordinates = new ResizableIntArray(DEFAULT_CAPACITY);
private final ResizableIntArray mEventTimes = new ResizableIntArray(DEFAULT_CAPACITY);
private int mCurrentStrokeId = -1;
private long mCurrentDownTime;
// The wall time of the zero value in {@link #mEventTimes}
private long mCurrentTimeBase;
private int mTrailStartIndex;
private final static Xfermode PORTER_DUFF_MODE_SRC =
new PorterDuffXfermode(PorterDuff.Mode.SRC);
// Use this value as imaginary zero because x-coordinates may be zero.
private static final int DOWN_EVENT_MARKER = -128;
static final class Params {
public final int mTrailColor;
public final float mTrailStartWidth;
@ -69,6 +64,9 @@ final class GesturePreviewTrail {
}
}
// Use this value as imaginary zero because x-coordinates may be zero.
private static final int DOWN_EVENT_MARKER = -128;
private static int markAsDownEvent(final int xCoord) {
return DOWN_EVENT_MARKER - xCoord;
}
@ -83,26 +81,23 @@ final class GesturePreviewTrail {
}
public void addStroke(final GestureStrokeWithPreviewTrail stroke, final long downTime) {
final int strokeId = stroke.getGestureStrokeId();
final boolean isNewStroke = strokeId != mCurrentStrokeId;
final int trailSize = mEventTimes.getLength();
stroke.appendPreviewStroke(mEventTimes, mXCoordinates, mYCoordinates);
final int newTrailSize = mEventTimes.getLength();
if (stroke.getGestureStrokePreviewSize() == 0) {
if (mEventTimes.getLength() == trailSize) {
return;
}
if (isNewStroke) {
final int elapsedTime = (int)(downTime - mCurrentDownTime);
final int[] eventTimes = mEventTimes.getPrimitiveArray();
final int strokeId = stroke.getGestureStrokeId();
if (strokeId != mCurrentStrokeId) {
final int elapsedTime = (int)(downTime - mCurrentTimeBase);
for (int i = mTrailStartIndex; i < trailSize; i++) {
// Decay the previous strokes' event times.
eventTimes[i] -= elapsedTime;
}
if (newTrailSize > trailSize) {
final int[] xCoords = mXCoordinates.getPrimitiveArray();
xCoords[trailSize] = markAsDownEvent(xCoords[trailSize]);
}
mCurrentDownTime = downTime;
final int downIndex = trailSize;
xCoords[downIndex] = markAsDownEvent(xCoords[downIndex]);
mCurrentTimeBase = downTime - eventTimes[downIndex];
mCurrentStrokeId = strokeId;
}
}
@ -123,6 +118,9 @@ final class GesturePreviewTrail {
/ params.mTrailLingerDuration, 0.0f);
}
private final static Xfermode PORTER_DUFF_MODE_SRC =
new PorterDuffXfermode(PorterDuff.Mode.SRC);
/**
* Draw gesture preview trail
* @param canvas The canvas to draw the gesture preview trail
@ -139,7 +137,7 @@ final class GesturePreviewTrail {
final int[] eventTimes = mEventTimes.getPrimitiveArray();
final int[] xCoords = mXCoordinates.getPrimitiveArray();
final int[] yCoords = mYCoordinates.getPrimitiveArray();
final int sinceDown = (int)(SystemClock.uptimeMillis() - mCurrentDownTime);
final int sinceDown = (int)(SystemClock.uptimeMillis() - mCurrentTimeBase);
int startIndex;
for (startIndex = mTrailStartIndex; startIndex < trailSize; startIndex++) {
final int elapsedTime = sinceDown - eventTimes[startIndex];

1
java/src/com/android/inputmethod/keyboard/internal/PreviewPlacerView.java
View File

@ -158,7 +158,6 @@ public class PreviewPlacerView extends RelativeLayout {
final Paint textPaint = new Paint();
textPaint.setAntiAlias(true);
textPaint.setStyle(Paint.Style.FILL);
textPaint.setTextAlign(Align.CENTER);
textPaint.setTextSize(gestureFloatingPreviewTextSize);
mTextPaint = textPaint;