public synchronized boolean handleTouchEvent(MotionEvent event, boolean isOnTouchEvent) {
float delta;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
lastY = event.getY();
lastX = event.getX();
return isOnTouchEvent;
case MotionEvent.ACTION_MOVE:
if (orientationVertical) {
delta = lastY - event.getY();
} else {
delta = lastX - event.getX();
}
if (Math.abs(delta) > controller.getTouchSlop())
setState(STATE_TOUCH); // XXX: initialize views?
if (state == STATE_TOUCH) {
forward = delta > 0; // We only want to know the direction of the last movement
controller.showFlipAnimation();
final float angleDelta;
if (orientationVertical) {
angleDelta = 180 * delta / controller.getContentHeight() * MOVEMENT_RATE;
} else {
angleDelta = 180 * delta / controller.getContentWidth() * MOVEMENT_RATE;
}
angle += angleDelta;
if (backCards.getIndex() == -1) {
if (angle >= MAX_TIP_ANGLE) angle = MAX_TIP_ANGLE;
} else if (backCards.getIndex() == 0) {
if (angle <= 180 - MAX_TIP_ANGLE) angle = 180 - MAX_TIP_ANGLE;
}
if (angle < 0) {
if (frontCards.getIndex() > 0) {
activeIndex = frontCards.getIndex() - 1; // xxx
controller.flippedToView(activeIndex);
} else {
swapCards();
frontCards.setView(-1, null);
if (-angle >= MAX_TIP_ANGLE) angle = -MAX_TIP_ANGLE;
angle += 180;
}
}
if (orientationVertical) {
lastY = event.getY();
} else {
lastX = event.getX();
}
controller.getSurfaceView().requestRender();
return true;
}
return isOnTouchEvent;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
if (state == STATE_TOUCH) {
if (orientationVertical) {
delta = lastY - event.getY();
rotateBy(180 * delta / controller.getContentHeight() * MOVEMENT_RATE);
} else {
delta = lastX - event.getX();
rotateBy(180 * delta / controller.getContentWidth() * MOVEMENT_RATE);
}
if (frontCards.getIndex() == -1) // If at the first or last card
forward = true;
else if (backCards.getIndex() == -1) forward = false;
setState(STATE_AUTO_ROTATE);
controller.getSurfaceView().requestRender();
}
return isOnTouchEvent;
}
return false;
}
