/** {@inheritDoc} */
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mCarouselListener.onTouchDown();
return true;
case MotionEvent.ACTION_UP:
mCarouselListener.onTouchUp();
return true;
}
return super.onTouchEvent(event);
}
/** {@inheritDoc} */
@Override
protected void onScrollChanged(int x, int y, int oldX, int oldY) {
super.onScrollChanged(x, y, oldX, oldY);
// Guard against framework issue where onScrollChanged() is called twice
// for each touch-move event. This wreaked havoc on the tab-carousel:
// the
// view-pager moved twice as fast as it should because we called
// fakeDragBy()
// twice with the same value.
if (mLastScrollPosition == x) {
return;
}
// Since we never completely scroll the about/updates tabs off-screen,
// the draggable range is less than the width of the carousel. Our
// listeners don't care about this... if we scroll 75% percent of our
// draggable range, they want to scroll 75% of the entire carousel
// width, not the same number of pixels that we scrolled.
final int scaledL = (int) (x * mScrollScaleFactor);
final int oldScaledL = (int) (oldX * mScrollScaleFactor);
mCarouselListener.onCarouselScrollChanged(scaledL, y, oldScaledL, oldY);
mLastScrollPosition = x;
updateAlphaLayers();
}
/** {@inheritDoc} */
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
final boolean interceptTouch = super.onInterceptTouchEvent(ev);
if (interceptTouch) {
mCarouselListener.onTouchDown();
}
return interceptTouch;
}
