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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
// Based on code by omergilad.
#ifndef GUI_ANIMATION_SCALEANIMATION_H
#define GUI_ANIMATION_SCALEANIMATION_H
#include "gui/animation/Animation.h"
namespace GUI {
class ScaleAnimation: public Animation {
public:
ScaleAnimation() : _endWidth(0), _endWidthFactor(0) {}
virtual ~ScaleAnimation() {}
float getEndWidth() const { return _endWidth; }
void setEndWidth(float endWidth) { _endWidth = endWidth; }
float getEndWidthFactor() const { return _endWidthFactor; }
void setEndWidthFactor(float endWidthFactor) { _endWidthFactor = endWidthFactor; }
float getStartWidth() const { return _startWidth; }
void setStartWidth(float startWidth) { _startWidth = startWidth; }
void updateInternal(Drawable *drawable, float interpolation) {
// If start width was set as 0 -> use the current width as the start dimension
if (_startWidth == 0)
_startWidth = drawable->getWidth();
// If end width was set as 0 - multiply the start width by the given factor
if (_endWidth == 0)
_endWidth = _startWidth * _endWidthFactor;
// Calculate width based on interpolation
float width = _startWidth * (1 - interpolation) + _endWidth * interpolation;
drawable->setWidth(width);
}
private:
virtual void updateInternal(Drawable *drawable, float interpolation);
float _startWidth;
float _endWidth;
float _endWidthFactor;
};
} // End of namespace GUI
#endif /* GUI_ANIMATION_SCALEANIMATION_H */
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