www.pudn.com > BloodVessel.rar > ximawbmp.cpp

/* 
 * File:	ximawbmp.cpp 
 * Purpose:	Platform Independent WBMP Image Class Loader and Writer 
 * 12/Jul/2002 Davide Pizzolato - www.xdp.it 
 * CxImage version 5.99c 17/Oct/2004 
 */ 
 
#include "ximawbmp.h" 
 
#if CXIMAGE_SUPPORT_WBMP 
 
#include "ximaiter.h" 
 
//////////////////////////////////////////////////////////////////////////////// 
bool CxImageWBMP::Decode(CxFile *hFile) 
{ 
	if (hFile == NULL) return false; 
 
	WBMPHEADER wbmpHead; 
 
  try 
  { 
	if (hFile->Read(&wbmpHead,sizeof(wbmpHead),1)==0) 
		throw "Not a WBMP"; 
 
	if (wbmpHead.Type != 0) 
		throw "Unsupported WBMP type";			 
 
	if (wbmpHead.ImageHeight==0 || wbmpHead.ImageWidth==0) 
		throw "Corrupted WBMP"; 
 
	Create(wbmpHead.ImageWidth, wbmpHead.ImageHeight, 1, CXIMAGE_FORMAT_WBMP); 
	if (!IsValid()) throw "WBMP Create failed"; 
	SetGrayPalette(); 
 
	int linewidth=(wbmpHead.ImageWidth+7)/8; 
    CImageIterator iter(this); 
	iter.Upset(); 
    for (int y=0; y < wbmpHead.ImageHeight; y++){ 
		hFile->Read(iter.GetRow(),linewidth,1); 
		iter.PrevRow(); 
    } 
 
  } catch (char *message) { 
	strncpy(info.szLastError,message,255); 
	return FALSE; 
  } 
    return true; 
} 
//////////////////////////////////////////////////////////////////////////////// 
#if CXIMAGE_SUPPORT_ENCODE 
//////////////////////////////////////////////////////////////////////////////// 
bool CxImageWBMP::Encode(CxFile * hFile) 
{ 
	if (EncodeSafeCheck(hFile)) return false; 
 
	//check format limits 
	if ((head.biWidth>255)||(head.biHeight>255)||(head.biBitCount!=1)){ 
		strcpy(info.szLastError,"Can't save this image as WBMP"); 
		return false; 
	} 
 
	WBMPHEADER wbmpHead; 
	wbmpHead.Type=0; 
	wbmpHead.FixHeader=0; 
	wbmpHead.ImageWidth=(BYTE)head.biWidth; 
	wbmpHead.ImageHeight=(BYTE)head.biHeight; 
 
    // Write the file header 
	hFile->Write(&wbmpHead,sizeof(wbmpHead),1); 
    // Write the pixels 
	int linewidth=(wbmpHead.ImageWidth+7)/8; 
    CImageIterator iter(this); 
	iter.Upset(); 
    for (int y=0; y < wbmpHead.ImageHeight; y++){ 
		hFile->Write(iter.GetRow(),linewidth,1); 
		iter.PrevRow(); 
    } 
	return true; 
} 
//////////////////////////////////////////////////////////////////////////////// 
#endif // CXIMAGE_SUPPORT_ENCODE 
//////////////////////////////////////////////////////////////////////////////// 
#endif // CXIMAGE_SUPPORT_WBMP