Method mousePress

src/Interface/ScrollBar.cpp:188–212

* The scrollbar only moves while the button is pressed. * @param action Pointer to an action. * @param state State that the action handlers belong to. */

 * @param state State that the action handlers belong to.
 */
void ScrollBar::mousePress(Action *action, State *state)
{
	InteractiveSurface::mousePress(action, state);
	if (action->getDetails()->button.button == SDL_BUTTON_LEFT)
	{
		int cursorY = action->getAbsoluteYMouse() - getY();
		if (cursorY >= _thumbRect.y && cursorY < _thumbRect.y + _thumbRect.h)
		{
			_offset = _thumbRect.y - cursorY;
		}
		else
		{
			_offset = -_thumbRect.h / 2;
		}
		_pressed = true;		
	}
	else if (action->getDetails()->button.button == SDL_BUTTON_WHEELUP)
	{
		_list->scrollUp(false, true);
	}
	else if (action->getDetails()->button.button == SDL_BUTTON_WHEELDOWN)
	{
		_list->scrollDown(false, true);
	}
}

/**
 * The scrollbar stops moving when the button is released.