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