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-rw-r--r--android/view/GestureDetector.java289
1 files changed, 145 insertions, 144 deletions
diff --git a/android/view/GestureDetector.java b/android/view/GestureDetector.java
index 52e53b07..bc2953e0 100644
--- a/android/view/GestureDetector.java
+++ b/android/view/GestureDetector.java
@@ -520,162 +520,163 @@ public class GestureDetector {
boolean handled = false;
switch (action & MotionEvent.ACTION_MASK) {
- case MotionEvent.ACTION_POINTER_DOWN:
- mDownFocusX = mLastFocusX = focusX;
- mDownFocusY = mLastFocusY = focusY;
- // Cancel long press and taps
- cancelTaps();
- break;
-
- case MotionEvent.ACTION_POINTER_UP:
- mDownFocusX = mLastFocusX = focusX;
- mDownFocusY = mLastFocusY = focusY;
-
- // Check the dot product of current velocities.
- // If the pointer that left was opposing another velocity vector, clear.
- mVelocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
- final int upIndex = ev.getActionIndex();
- final int id1 = ev.getPointerId(upIndex);
- final float x1 = mVelocityTracker.getXVelocity(id1);
- final float y1 = mVelocityTracker.getYVelocity(id1);
- for (int i = 0; i < count; i++) {
- if (i == upIndex) continue;
-
- final int id2 = ev.getPointerId(i);
- final float x = x1 * mVelocityTracker.getXVelocity(id2);
- final float y = y1 * mVelocityTracker.getYVelocity(id2);
-
- final float dot = x + y;
- if (dot < 0) {
- mVelocityTracker.clear();
- break;
+ case MotionEvent.ACTION_POINTER_DOWN:
+ mDownFocusX = mLastFocusX = focusX;
+ mDownFocusY = mLastFocusY = focusY;
+ // Cancel long press and taps
+ cancelTaps();
+ break;
+
+ case MotionEvent.ACTION_POINTER_UP:
+ mDownFocusX = mLastFocusX = focusX;
+ mDownFocusY = mLastFocusY = focusY;
+
+ // Check the dot product of current velocities.
+ // If the pointer that left was opposing another velocity vector, clear.
+ mVelocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
+ final int upIndex = ev.getActionIndex();
+ final int id1 = ev.getPointerId(upIndex);
+ final float x1 = mVelocityTracker.getXVelocity(id1);
+ final float y1 = mVelocityTracker.getYVelocity(id1);
+ for (int i = 0; i < count; i++) {
+ if (i == upIndex) continue;
+
+ final int id2 = ev.getPointerId(i);
+ final float x = x1 * mVelocityTracker.getXVelocity(id2);
+ final float y = y1 * mVelocityTracker.getYVelocity(id2);
+
+ final float dot = x + y;
+ if (dot < 0) {
+ mVelocityTracker.clear();
+ break;
+ }
}
- }
- break;
-
- case MotionEvent.ACTION_DOWN:
- if (mDoubleTapListener != null) {
- boolean hadTapMessage = mHandler.hasMessages(TAP);
- if (hadTapMessage) mHandler.removeMessages(TAP);
- if ((mCurrentDownEvent != null) && (mPreviousUpEvent != null) && hadTapMessage &&
- isConsideredDoubleTap(mCurrentDownEvent, mPreviousUpEvent, ev)) {
- // This is a second tap
- mIsDoubleTapping = true;
- // Give a callback with the first tap of the double-tap
- handled |= mDoubleTapListener.onDoubleTap(mCurrentDownEvent);
- // Give a callback with down event of the double-tap
- handled |= mDoubleTapListener.onDoubleTapEvent(ev);
- } else {
- // This is a first tap
- mHandler.sendEmptyMessageDelayed(TAP, DOUBLE_TAP_TIMEOUT);
+ break;
+
+ case MotionEvent.ACTION_DOWN:
+ if (mDoubleTapListener != null) {
+ boolean hadTapMessage = mHandler.hasMessages(TAP);
+ if (hadTapMessage) mHandler.removeMessages(TAP);
+ if ((mCurrentDownEvent != null) && (mPreviousUpEvent != null)
+ && hadTapMessage
+ && isConsideredDoubleTap(mCurrentDownEvent, mPreviousUpEvent, ev)) {
+ // This is a second tap
+ mIsDoubleTapping = true;
+ // Give a callback with the first tap of the double-tap
+ handled |= mDoubleTapListener.onDoubleTap(mCurrentDownEvent);
+ // Give a callback with down event of the double-tap
+ handled |= mDoubleTapListener.onDoubleTapEvent(ev);
+ } else {
+ // This is a first tap
+ mHandler.sendEmptyMessageDelayed(TAP, DOUBLE_TAP_TIMEOUT);
+ }
}
- }
- mDownFocusX = mLastFocusX = focusX;
- mDownFocusY = mLastFocusY = focusY;
- if (mCurrentDownEvent != null) {
- mCurrentDownEvent.recycle();
- }
- mCurrentDownEvent = MotionEvent.obtain(ev);
- mAlwaysInTapRegion = true;
- mAlwaysInBiggerTapRegion = true;
- mStillDown = true;
- mInLongPress = false;
- mDeferConfirmSingleTap = false;
-
- if (mIsLongpressEnabled) {
- mHandler.removeMessages(LONG_PRESS);
- mHandler.sendEmptyMessageAtTime(LONG_PRESS,
- mCurrentDownEvent.getDownTime() + LONGPRESS_TIMEOUT);
- }
- mHandler.sendEmptyMessageAtTime(SHOW_PRESS,
- mCurrentDownEvent.getDownTime() + TAP_TIMEOUT);
- handled |= mListener.onDown(ev);
- break;
+ mDownFocusX = mLastFocusX = focusX;
+ mDownFocusY = mLastFocusY = focusY;
+ if (mCurrentDownEvent != null) {
+ mCurrentDownEvent.recycle();
+ }
+ mCurrentDownEvent = MotionEvent.obtain(ev);
+ mAlwaysInTapRegion = true;
+ mAlwaysInBiggerTapRegion = true;
+ mStillDown = true;
+ mInLongPress = false;
+ mDeferConfirmSingleTap = false;
- case MotionEvent.ACTION_MOVE:
- if (mInLongPress || mInContextClick) {
+ if (mIsLongpressEnabled) {
+ mHandler.removeMessages(LONG_PRESS);
+ mHandler.sendEmptyMessageAtTime(LONG_PRESS,
+ mCurrentDownEvent.getDownTime() + LONGPRESS_TIMEOUT);
+ }
+ mHandler.sendEmptyMessageAtTime(SHOW_PRESS,
+ mCurrentDownEvent.getDownTime() + TAP_TIMEOUT);
+ handled |= mListener.onDown(ev);
break;
- }
- final float scrollX = mLastFocusX - focusX;
- final float scrollY = mLastFocusY - focusY;
- if (mIsDoubleTapping) {
- // Give the move events of the double-tap
- handled |= mDoubleTapListener.onDoubleTapEvent(ev);
- } else if (mAlwaysInTapRegion) {
- final int deltaX = (int) (focusX - mDownFocusX);
- final int deltaY = (int) (focusY - mDownFocusY);
- int distance = (deltaX * deltaX) + (deltaY * deltaY);
- int slopSquare = isGeneratedGesture ? 0 : mTouchSlopSquare;
- if (distance > slopSquare) {
+
+ case MotionEvent.ACTION_MOVE:
+ if (mInLongPress || mInContextClick) {
+ break;
+ }
+ final float scrollX = mLastFocusX - focusX;
+ final float scrollY = mLastFocusY - focusY;
+ if (mIsDoubleTapping) {
+ // Give the move events of the double-tap
+ handled |= mDoubleTapListener.onDoubleTapEvent(ev);
+ } else if (mAlwaysInTapRegion) {
+ final int deltaX = (int) (focusX - mDownFocusX);
+ final int deltaY = (int) (focusY - mDownFocusY);
+ int distance = (deltaX * deltaX) + (deltaY * deltaY);
+ int slopSquare = isGeneratedGesture ? 0 : mTouchSlopSquare;
+ if (distance > slopSquare) {
+ handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
+ mLastFocusX = focusX;
+ mLastFocusY = focusY;
+ mAlwaysInTapRegion = false;
+ mHandler.removeMessages(TAP);
+ mHandler.removeMessages(SHOW_PRESS);
+ mHandler.removeMessages(LONG_PRESS);
+ }
+ int doubleTapSlopSquare = isGeneratedGesture ? 0 : mDoubleTapTouchSlopSquare;
+ if (distance > doubleTapSlopSquare) {
+ mAlwaysInBiggerTapRegion = false;
+ }
+ } else if ((Math.abs(scrollX) >= 1) || (Math.abs(scrollY) >= 1)) {
handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
mLastFocusX = focusX;
mLastFocusY = focusY;
- mAlwaysInTapRegion = false;
- mHandler.removeMessages(TAP);
- mHandler.removeMessages(SHOW_PRESS);
- mHandler.removeMessages(LONG_PRESS);
}
- int doubleTapSlopSquare = isGeneratedGesture ? 0 : mDoubleTapTouchSlopSquare;
- if (distance > doubleTapSlopSquare) {
- mAlwaysInBiggerTapRegion = false;
+ break;
+
+ case MotionEvent.ACTION_UP:
+ mStillDown = false;
+ MotionEvent currentUpEvent = MotionEvent.obtain(ev);
+ if (mIsDoubleTapping) {
+ // Finally, give the up event of the double-tap
+ handled |= mDoubleTapListener.onDoubleTapEvent(ev);
+ } else if (mInLongPress) {
+ mHandler.removeMessages(TAP);
+ mInLongPress = false;
+ } else if (mAlwaysInTapRegion && !mIgnoreNextUpEvent) {
+ handled = mListener.onSingleTapUp(ev);
+ if (mDeferConfirmSingleTap && mDoubleTapListener != null) {
+ mDoubleTapListener.onSingleTapConfirmed(ev);
+ }
+ } else if (!mIgnoreNextUpEvent) {
+
+ // A fling must travel the minimum tap distance
+ final VelocityTracker velocityTracker = mVelocityTracker;
+ final int pointerId = ev.getPointerId(0);
+ velocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
+ final float velocityY = velocityTracker.getYVelocity(pointerId);
+ final float velocityX = velocityTracker.getXVelocity(pointerId);
+
+ if ((Math.abs(velocityY) > mMinimumFlingVelocity)
+ || (Math.abs(velocityX) > mMinimumFlingVelocity)) {
+ handled = mListener.onFling(mCurrentDownEvent, ev, velocityX, velocityY);
+ }
}
- } else if ((Math.abs(scrollX) >= 1) || (Math.abs(scrollY) >= 1)) {
- handled = mListener.onScroll(mCurrentDownEvent, ev, scrollX, scrollY);
- mLastFocusX = focusX;
- mLastFocusY = focusY;
- }
- break;
-
- case MotionEvent.ACTION_UP:
- mStillDown = false;
- MotionEvent currentUpEvent = MotionEvent.obtain(ev);
- if (mIsDoubleTapping) {
- // Finally, give the up event of the double-tap
- handled |= mDoubleTapListener.onDoubleTapEvent(ev);
- } else if (mInLongPress) {
- mHandler.removeMessages(TAP);
- mInLongPress = false;
- } else if (mAlwaysInTapRegion && !mIgnoreNextUpEvent) {
- handled = mListener.onSingleTapUp(ev);
- if (mDeferConfirmSingleTap && mDoubleTapListener != null) {
- mDoubleTapListener.onSingleTapConfirmed(ev);
+ if (mPreviousUpEvent != null) {
+ mPreviousUpEvent.recycle();
}
- } else if (!mIgnoreNextUpEvent) {
-
- // A fling must travel the minimum tap distance
- final VelocityTracker velocityTracker = mVelocityTracker;
- final int pointerId = ev.getPointerId(0);
- velocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
- final float velocityY = velocityTracker.getYVelocity(pointerId);
- final float velocityX = velocityTracker.getXVelocity(pointerId);
-
- if ((Math.abs(velocityY) > mMinimumFlingVelocity)
- || (Math.abs(velocityX) > mMinimumFlingVelocity)){
- handled = mListener.onFling(mCurrentDownEvent, ev, velocityX, velocityY);
+ // Hold the event we obtained above - listeners may have changed the original.
+ mPreviousUpEvent = currentUpEvent;
+ if (mVelocityTracker != null) {
+ // This may have been cleared when we called out to the
+ // application above.
+ mVelocityTracker.recycle();
+ mVelocityTracker = null;
}
- }
- if (mPreviousUpEvent != null) {
- mPreviousUpEvent.recycle();
- }
- // Hold the event we obtained above - listeners may have changed the original.
- mPreviousUpEvent = currentUpEvent;
- if (mVelocityTracker != null) {
- // This may have been cleared when we called out to the
- // application above.
- mVelocityTracker.recycle();
- mVelocityTracker = null;
- }
- mIsDoubleTapping = false;
- mDeferConfirmSingleTap = false;
- mIgnoreNextUpEvent = false;
- mHandler.removeMessages(SHOW_PRESS);
- mHandler.removeMessages(LONG_PRESS);
- break;
-
- case MotionEvent.ACTION_CANCEL:
- cancel();
- break;
+ mIsDoubleTapping = false;
+ mDeferConfirmSingleTap = false;
+ mIgnoreNextUpEvent = false;
+ mHandler.removeMessages(SHOW_PRESS);
+ mHandler.removeMessages(LONG_PRESS);
+ break;
+
+ case MotionEvent.ACTION_CANCEL:
+ cancel();
+ break;
}
if (!handled && mInputEventConsistencyVerifier != null) {
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