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RGBA.hxx

/*
 *  Copyright (C) 2005-2008  Maarten de Boer <maarten@resorama.com>
 * 
 *  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.
 * 
 */

#ifndef __RGBA__
#define __RGBA__

00024 class Data2D
{
public:
      int Width() const { return width; }
      int Height() const { return height; }
      unsigned char* Data() const { return data; }
protected:
      int width,height,elemsize;
      unsigned char* data;
      Data2D(int e)
                  :width(0),height(0),elemsize(e),data(0)
      {
      }
      ~Data2D()
      {
            if (data) delete [] data;
      }
      Data2D(int w,int h,int e)
                  :width(0),height(0),elemsize(e),data(0)
      {

            Alloc(w,h);
      }
public:
      void Alloc(int w,int h)
      {
            if (w==width && h==height) return;
            if (data) throw "Data2D already allocated with different size";
            width = w;
            height = h;
            data = new unsigned char[width*height*elemsize];
      }
};

00058 class RGB:public Data2D
{
public:
      RGB():Data2D(3) { };
      RGB(int w,int h):Data2D(w,h,3) { };
};

00065 class RGBA:public Data2D
{
public:
      RGBA():Data2D(4) { };
      RGBA(int w,int h):Data2D(w,h,4) { };

      void Paste(const RGBA& src,int x,int y)
      {
            unsigned char* ptrB = src.data;

            for (int j = 0; j < src.height; j++)
            {
                  unsigned char* ptrA = data + (y*width+x)*4;
                  for (int i = 0;i < src.width; i++)
                  {
                        *ptrA++ = *ptrB++;
                        *ptrA++ = *ptrB++;
                        *ptrA++ = *ptrB++;
                        *ptrA++ = *ptrB++;
                  }
                  y++;
            }
      }
      void Paste(const RGB& src,int x,int y)
      {
            unsigned char* ptrB = src.Data();

            for (int j = 0; j < src.Height(); j++)
            {
                  unsigned char* ptrA = data + (y*width+x)*4;
                  for (int i = 0;i < src.Width(); i++)
                  {
                        *ptrA++ = *ptrB++;
                        *ptrA++ = *ptrB++;
                        *ptrA++ = *ptrB++;
                        *ptrA++ = 255;
                  }
                  y++;
            }
      }
};

#endif



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