@Override
public boolean onTouchEvent(MotionEvent event) {
// Avoid short-circuit logic evaluation - ensure all gesture detectors see all events so
// that they generate correct notifications.
boolean handled = mScroller.onTouchEvent(event);
handled |= mZoomer.onTouchEvent(event);
handled |= mTapDetector.onTouchEvent(event);
mSwipePinchDetector.onTouchEvent(event);
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
mViewer.setAnimationEnabled(false);
mSuppressCursorMovement = false;
mSuppressFling = false;
mSwipeCompleted = false;
break;
case MotionEvent.ACTION_POINTER_DOWN:
mTotalMotionY = 0;
break;
case MotionEvent.ACTION_UP:
releaseAnyHeldButton();
break;
default:
break;
}
return handled;
}
@Override
public void processAnimation() {
int previousX = mFlingScroller.getCurrX();
int previousY = mFlingScroller.getCurrY();
if (!mFlingScroller.computeScrollOffset()) {
mViewer.setAnimationEnabled(false);
return;
}
int deltaX = mFlingScroller.getCurrX() - previousX;
int deltaY = mFlingScroller.getCurrY() - previousY;
float[] delta = {deltaX, deltaY};
synchronized (mRenderData) {
Matrix canvasToImage = new Matrix();
mRenderData.transform.invert(canvasToImage);
canvasToImage.mapVectors(delta);
}
moveCursor(mCursorPosition.x + delta[0], mCursorPosition.y + delta[1]);
}