@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
final int action = event.getAction();
final float x = event.getX();
final float y = event.getY();
if (mAnimating) {
return false;
}
View leftHandle = mLeftSlider.tab;
leftHandle.getHitRect(mTmpRect);
boolean leftHit = mTmpRect.contains((int) x, (int) y);
View rightHandle = mRightSlider.tab;
rightHandle.getHitRect(mTmpRect);
boolean rightHit = mTmpRect.contains((int) x, (int) y);
if (!mTracking && !(leftHit || rightHit)) {
return false;
}
switch (action) {
case MotionEvent.ACTION_DOWN:
{
mTracking = true;
mTriggered = false;
vibrate(VIBRATE_SHORT);
if (leftHit) {
mCurrentSlider = mLeftSlider;
mOtherSlider = mRightSlider;
mThreshold = isHorizontal() ? THRESHOLD : 1.0f - THRESHOLD;
setGrabbedState(OnTriggerListener.LEFT_HANDLE);
} else {
mCurrentSlider = mRightSlider;
mOtherSlider = mLeftSlider;
mThreshold = isHorizontal() ? 1.0f - THRESHOLD : THRESHOLD;
setGrabbedState(OnTriggerListener.RIGHT_HANDLE);
}
mCurrentSlider.setState(Slider.STATE_PRESSED);
mCurrentSlider.showTarget();
mOtherSlider.hide();
break;
}
}
return true;
}
private void cancelGrab() {
mTracking = false;
mTriggered = false;
mOtherSlider.show(true);
mCurrentSlider.reset(false);
mCurrentSlider.hideTarget();
mCurrentSlider = null;
mOtherSlider = null;
setGrabbedState(OnTriggerListener.NO_HANDLE);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (mTracking) {
final int action = event.getAction();
final float x = event.getX();
final float y = event.getY();
switch (action) {
case MotionEvent.ACTION_MOVE:
if (withinView(x, y, this)) {
moveHandle(x, y);
float position = isHorizontal() ? x : y;
float target = mThreshold * (isHorizontal() ? getWidth() : getHeight());
boolean thresholdReached;
if (isHorizontal()) {
thresholdReached =
mCurrentSlider == mLeftSlider ? position > target : position < target;
} else {
thresholdReached =
mCurrentSlider == mLeftSlider ? position < target : position > target;
}
if (!mTriggered && thresholdReached) {
mTriggered = true;
mTracking = false;
mCurrentSlider.setState(Slider.STATE_ACTIVE);
boolean isLeft = mCurrentSlider == mLeftSlider;
dispatchTriggerEvent(
isLeft ? OnTriggerListener.LEFT_HANDLE : OnTriggerListener.RIGHT_HANDLE);
startAnimating(isLeft ? mHoldLeftOnTransition : mHoldRightOnTransition);
setGrabbedState(OnTriggerListener.NO_HANDLE);
}
break;
}
// Intentionally fall through - we're outside tracking rectangle
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
cancelGrab();
break;
}
}
return mTracking || super.onTouchEvent(event);
}