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/**
* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#ifndef _H_IMG_BrushRGBA32
#define _H_IMG_BrushRGBA32
#include "IMG_PixmapRGBA32.h"
/**
* A brush used for drawing in pixmaps.
* The brush is a pixmap as well.
* Drawing can be implemented by blending the brush into the pixmap.
*
* @author Maarten Gribnau
* @date March 7, 2001
* @todo Check the algorithm
*/
class IMG_BrushRGBA32 : public IMG_PixmapRGBA32 {
public:
/**
* Constructs a brush image with the dimensions and color given.
* @param w width of the brush image
* @param h height of the brush image
* @param c color of the brush
* @param a transparency in the center of the brush
*/
IMG_BrushRGBA32(TUns32 w, TUns32 h, const IMG_ColorRGB& c, float a = 0.8f);
/**
* Sets the color of the brush.
* @param c color of the brush
*/
virtual void setColor(const IMG_ColorRGB& c);
/**
* Returns the color of the brush.
* @param c color of the brush
*/
inline virtual void getColor(IMG_ColorRGB& c) const;
/**
* Sets the transparency of the brush.
* @param a transparency of the brush
*/
virtual void setTransparency(float a);
/**
* Returns the transparency of the brush.
* @param a transparency of the brush
*/
inline virtual float getTransparency() const;
/**
* Sets the shape of the brush from two radii (inner and outer).
* This creates a brush with alpha==0 inside the inner radius
* and gradually fades to alpha==1 at the outer radius.
* Inner radius should be smaller or equal to the outer radius.
* If not, the outer radius is made equal to the inner radius.
* If the either radius is larger than the bounds of the brush,
* they are clipped.
* @param rI inner radius
* @param rO outer radius
*/
virtual void setRadii(TUns32 rI, TUns32 rO);
/**
* Returns the radii that determine the shape of the brush.
* @param rI inner radius
* @param rO outer radius
*/
inline virtual void setRadii(TUns32& rI, TUns32& rO) const;
protected:
/**
* Updates the image of this brush.
* The image is created using the current color, transparency and shape radii.
*/
virtual void updateImage();
IMG_ColorRGB m_color; /** The color of the brush */
float m_alpha; /** The transparency of the brush */
TUns32 m_ri; /** The inner radius of the brush */
TUns32 m_ro; /** The outer radius of the brush */
};
inline void IMG_BrushRGBA32::setRadii(TUns32& rI, TUns32& rO) const
{
rI = m_ri;
rO = m_ro;
}
inline float IMG_BrushRGBA32::getTransparency() const
{
return m_alpha;
}
inline void IMG_BrushRGBA32::getColor(IMG_ColorRGB& c) const
{
c = m_color;
}
#endif // _H_IMG_BrushRGBA32
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