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;
}
public synchronized void draw(FlipRenderer renderer, GL10 gl) {
applyTexture(renderer, gl);
if (!TextureUtils.isValidTexture(frontCards.getTexture())
&& !TextureUtils.isValidTexture(backCards.getTexture())) return;
if (!visible) return;
switch (state) {
case STATE_INIT:
{
/*if (false) { //XXX: debug only
if (angle >= 180)
forward = false;
else if (angle <= 0)
forward = true;
rotateBy((forward ? TIP_SPEED : -TIP_SPEED));
if (angle > 90 && angle <= 180 - MAX_TIP_ANGLE) {
forward = true;
} else if (angle < 90 && angle >= MAX_TIP_ANGLE) {
forward = false;
}
}*/
}
break;
case STATE_TOUCH:
break;
case STATE_AUTO_ROTATE:
{
animatedFrame++;
rotateBy((forward ? ACCELERATION : -ACCELERATION) * animatedFrame);
if (angle >= 180 || angle <= 0) {
setState(STATE_INIT);
if (angle >= 180) { // flip to next page
if (backCards.getIndex() != -1) {
activeIndex = backCards.getIndex();
controller.postFlippedToView(activeIndex);
} else angle = 180;
}
controller.postHideFlipAnimation();
} else controller.getSurfaceView().requestRender();
}
break;
default:
AphidLog.e("Invalid state: " + state);
break;
}
if (angle < 90) { // render front view over back view
frontCards.getTopCard().setAngle(0);
frontCards.getTopCard().draw(gl);
backCards.getBottomCard().setAngle(0);
backCards.getBottomCard().draw(gl);
frontCards.getBottomCard().setAngle(angle);
frontCards.getBottomCard().draw(gl);
} else { // render back view first
frontCards.getTopCard().setAngle(0);
frontCards.getTopCard().draw(gl);
backCards.getTopCard().setAngle(180 - angle);
backCards.getTopCard().draw(gl);
backCards.getBottomCard().setAngle(0);
backCards.getBottomCard().draw(gl);
}
}