private float getTargetScale(float currentRawX) {
float scaleFloatX = ((currentRawX - lastRawX) / getScreenWidth()) * 0.75f;
scaleFloatX = scaleDirection == DIRECTION_RIGHT ? -scaleFloatX : scaleFloatX;
float targetScale = ViewHelper.getScaleX(viewActivity) - scaleFloatX;
targetScale = targetScale > 1.0f ? 1.0f : targetScale;
targetScale = targetScale < 0.5f ? 0.5f : targetScale;
return targetScale;
}
private void logState(View v, String title) {
Log.v(
TAG,
title
+ ": ROT ("
+ ViewHelper.getRotation(v)
+ ", "
+ ViewHelper.getRotationX(v)
+ ", "
+ ViewHelper.getRotationY(v)
+ "), TRANS ("
+ ViewHelper.getTranslationX(v)
+ ", "
+ ViewHelper.getTranslationY(v)
+ "), SCALE ("
+ ViewHelper.getScaleX(v)
+ ", "
+ ViewHelper.getScaleY(v)
+ "), ALPHA "
+ ViewHelper.getAlpha(v));
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
float currentActivityScaleX = ViewHelper.getScaleX(viewActivity);
if (currentActivityScaleX == 1.0f) setScaleDirectionByRawX(ev.getRawX());
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
lastActionDownX = ev.getX();
lastActionDownY = ev.getY();
isInIgnoredView = isInIgnoredView(ev) && !isOpened();
pressedState = PRESSED_DOWN;
break;
case MotionEvent.ACTION_MOVE:
if (isInIgnoredView || isInDisableDirection(scaleDirection)) break;
if (pressedState != PRESSED_DOWN && pressedState != PRESSED_MOVE_HORIZONTAL) break;
int xOffset = (int) (ev.getX() - lastActionDownX);
int yOffset = (int) (ev.getY() - lastActionDownY);
if (pressedState == PRESSED_DOWN) {
if (yOffset > 25 || yOffset < -25) {
pressedState = PRESSED_MOVE_VERTICAL;
break;
}
if (xOffset < -50 || xOffset > 50) {
pressedState = PRESSED_MOVE_HORIZONTAL;
ev.setAction(MotionEvent.ACTION_CANCEL);
}
} else if (pressedState == PRESSED_MOVE_HORIZONTAL) {
if (currentActivityScaleX < 0.95) showScrollViewMenu(scrollViewMenu);
float targetScale = getTargetScale(ev.getRawX());
if (mUse3D) {
int angle = scaleDirection == DIRECTION_LEFT ? -ROTATE_Y_ANGLE : ROTATE_Y_ANGLE;
angle *= (1 - targetScale) * 2;
ViewHelper.setRotationY(viewActivity, angle);
ViewHelper.setScaleX(imageViewShadow, targetScale - shadowAdjustScaleX);
ViewHelper.setScaleY(imageViewShadow, targetScale - shadowAdjustScaleY);
} else {
ViewHelper.setScaleX(imageViewShadow, targetScale + shadowAdjustScaleX);
ViewHelper.setScaleY(imageViewShadow, targetScale + shadowAdjustScaleY);
}
ViewHelper.setScaleX(viewActivity, targetScale);
ViewHelper.setScaleY(viewActivity, targetScale);
ViewHelper.setAlpha(scrollViewMenu, (1 - targetScale) * 2.0f);
lastRawX = ev.getRawX();
return true;
}
break;
case MotionEvent.ACTION_UP:
if (isInIgnoredView) break;
if (pressedState != PRESSED_MOVE_HORIZONTAL) break;
pressedState = PRESSED_DONE;
if (isOpened()) {
if (currentActivityScaleX > 0.56f) closeMenu();
else openMenu(scaleDirection);
} else {
if (currentActivityScaleX < 0.94f) {
openMenu(scaleDirection);
} else {
closeMenu();
}
}
break;
}
lastRawX = ev.getRawX();
return super.dispatchTouchEvent(ev);
}
@Override
public Float get(View object) {
return ViewHelper.getScaleX(object);
}