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RawImageRsrc.cpp

/**
 * $Id: RawImageRsrc.cpp,v 1.4 2004/03/22 22:01:37 jesterking Exp $
 * ***** 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 *****
 */

#include "RawImageRsrc.h"

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

00038 RawImageRsrc::RawImageRsrc()
      : m_width(0), m_height(0)
{
}

00043 bool RawImageRsrc::load(
      HINSTANCE hInstApp, LPCTSTR lpName, LPCTSTR lpType,
      int srcWidth, int srcHeight,
      int width, int height,
      TImageAlignment alignment, int offsetX, int offsetY)
{
      bool success = MemoryResource::load(hInstApp, lpName, lpType);

      if (success) {
            void* tempData = m_data;

            int numBytes = width*height*4;
            m_data = new char [numBytes];
            if (m_data) {
                  ::memset(m_data, 0x00000000, numBytes);
                  m_width = width;
                  m_height = height;

                  int srcBytesWidth = srcWidth * 4;
                  int dstBytesWidth = width * 4;
                  int numRows = (srcHeight + offsetY) < height ? srcHeight : height - offsetY;
                  numBytes = (srcWidth + offsetX) < width ? srcBytesWidth : (width - offsetX)*4;

                  if ((offsetX < width) && (offsetY < height)) {
                        unsigned char* src = (unsigned char*)tempData;
                        unsigned char* dst = (unsigned char*)m_data;
                        if (alignment == alignTopLeft) {
                              // Put original in upper left corner

                              // Add vertical offset
                              dst += offsetY * dstBytesWidth;     
                              // Add horizontal offset
                              dst += offsetX * 4;
                              for (int row = 0; row < numRows; row++) {
                                    ::memcpy(dst, src, numBytes);
                                    src += srcBytesWidth;
                                    dst += dstBytesWidth;
                              }
                        }
                        else {
                              // Put original in lower right corner

                              // Add vertical offset
                              dst += (height - (srcHeight + offsetY)) * dstBytesWidth;
                              // Add horizontal offset
                              if (width > (srcWidth + offsetX)) {
                                    dst += (width - (srcWidth + offsetX)) * 4;
                              }
                              else {
                                    src += (srcWidth + offsetX - width) * 4;
                              }
                              for (int row = 0; row < numRows; row++) {
                                    ::memcpy(dst, src, numBytes);
                                    src += srcBytesWidth;
                                    dst += dstBytesWidth;
                              }
                        }
                  }
                  delete [] tempData;
            }
            else {
                  // Allocation failed, restore old data
                  m_data = tempData;
                  success = false;
            }
      }
      
      return success;
}


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