void CMainFrame::SetImage(HANDLE hBitmap,TW_IMAGEINFO& /*info*/)
{ //<<<TWAIN>>>
CDemoDoc *NewDoc=(CDemoDoc*)((CDemoApp*)AfxGetApp())->demoTemplate->OpenDocumentFile(NULL);
if (NewDoc) {
if (hBitmap){
CxImage *newima = new CxImage();
newima->CreateFromHANDLE(hBitmap);
NewDoc->image = newima;
}
CString s;
s.Format(_T("Acquired Image %d"),((CDemoApp*)AfxGetApp())->m_nDocCount++);
NewDoc->SetTitle(s);
NewDoc->UpdateAllViews(0,WM_USER_NEWIMAGE);
NewDoc->UpdateStatusBar();
}
}
//////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers
void CMainFrame::OnEditPaste()
{
CDemoDoc *NewDoc=(CDemoDoc*)((CDemoApp*)AfxGetApp())->demoTemplate->OpenDocumentFile(NULL);
if (NewDoc) {
HANDLE hBitmap=NULL;
CBitmap bmpClip;
if (OpenClipboard()) hBitmap=GetClipboardData(CF_DIB);
if (hBitmap){
CxImage *newima = new CxImage();
newima->CreateFromHANDLE(hBitmap);
NewDoc->image = newima;
}
CloseClipboard();
CString s;
s.Format("Clipboard Image %d",((CDemoApp*)AfxGetApp())->m_nDocCount++);
NewDoc->SetTitle(s);
NewDoc->UpdateAllViews(0,WM_USER_NEWIMAGE);
NewDoc->UpdateStatusBar();
}
}
//////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers
void CMainFrame::OnEditPaste()
{
CDemoDoc *NewDoc=(CDemoDoc*)((CDemoApp*)AfxGetApp())->demoTemplate->OpenDocumentFile(NULL);
if (NewDoc)
{
if (OpenClipboard())
{
HANDLE hData=NULL;
if (hData = GetClipboardData(((CDemoApp*)AfxGetApp())->GetCF())){ //custom CxImage object
CxImage *newima = new CxImage();
DWORD dwSize = GlobalSize(hData);
if (dwSize) {
BYTE *lpVoid = (BYTE *)GlobalLock(hData);
newima->UnDump(lpVoid);
GlobalUnlock(lpVoid);
}
NewDoc->image = newima;
} else if (hData = GetClipboardData(CF_DIB)){ // check if bitmap
CxImage *newima = new CxImage();
newima->CreateFromHANDLE(hData);
NewDoc->image = newima;
} else {
#if CXIMAGE_SUPPORT_WMF
if (hData = GetClipboardData(CF_ENHMETAFILE)) //check if metafile
{
HENHMETAFILE hMeta = (HENHMETAFILE)hData;
ENHMETAHEADER emh;
GetEnhMetaFileHeader(hMeta, sizeof(emh), &emh);
int cx,cy;
cx = (int)((emh.rclBounds.right - emh.rclBounds.left)/2.54);
cy = (int)((emh.rclBounds.bottom - emh.rclBounds.top)/2.54);
HDC hDC0 = ::GetDC(0); // screen dc
HBITMAP hBitmap = CreateCompatibleBitmap(hDC0, cx, cy);
HDC hDC = CreateCompatibleDC(hDC0); // memory dc compatible with screen
::ReleaseDC(0, hDC0); // don't need anymore. get rid of it.
if (hDC && hBitmap){
RECT rc = {0,0,cx,cy};
int bpp = ::GetDeviceCaps(hDC, BITSPIXEL);
HBITMAP hBitmapOld = (HBITMAP)SelectObject(hDC, hBitmap);
// paint the background
DWORD dwBack = RGB(255, 255, 255); //GetSysColor(COLOR_WINDOW);
DWORD OldColor = SetBkColor(hDC, dwBack);
ExtTextOut(hDC, 0, 0, ETO_OPAQUE, &rc, NULL, 0, NULL);
SetBkColor(hDC, OldColor);
// Play the Metafile into Memory DC
BOOL bRet = PlayEnhMetaFile(hDC, hMeta, &rc);
SelectObject(hDC, hBitmapOld);
CxImage *newima = new CxImage();
if(bRet && newima->Create(cx, cy, bpp, CXIMAGE_FORMAT_WMF)){
bRet = GetDIBits(hDC, hBitmap, 0, (UINT)cy, newima->GetBits(),
(LPBITMAPINFO)newima->GetDIB(), DIB_RGB_COLORS);
NewDoc->image = newima;
}
else
{
delete newima;
}
}
if (hBitmap) DeleteObject(hBitmap);
if (hDC) DeleteDC(hDC);
}
#endif
}
}
CloseClipboard();
CString s;
s.Format(_T("Clipboard Image %d"),((CDemoApp*)AfxGetApp())->m_nDocCount++);
NewDoc->SetTitle(s);
NewDoc->UpdateAllViews(0,WM_USER_NEWIMAGE);
NewDoc->UpdateStatusBar();
}
}
BOOL CTWainHelper::SaveAsPdf(const char* pFileName, std::vector< HANDLE > m_pic_handles)
{
PDF *p;
int image;
const char *imagefile = "/pvf/pic.jpg";
/* This is where font/image/PDF input files live. Adjust as necessary. */
const char *searchpath = "./";
/* create a new PDFlib object */
if ((p = PDF_new()) == (PDF *) 0)
{
printf("Couldn't create PDFlib object (out of memory)!\n");
return FALSE;
}
PDF_TRY(p){
/* This means we must check return values of load_font() etc. */
PDF_set_parameter(p, "errorpolicy", "return");
/* This line is required to avoid problems on Japanese systems */
PDF_set_parameter(p, "hypertextencoding", "host");
if (PDF_begin_document(p, pFileName, 0, "") == -1) {
printf("Error: %s\n", PDF_get_errmsg(p));
return FALSE;
}
PDF_set_parameter(p, "SearchPath", searchpath);
PDF_set_info(p, "Creator", "TWainApp");
PDF_set_info(p, "Author", "Snail");
PDF_set_info(p, "Title", "image sample (C)");
std::vector< HANDLE >::iterator it;
for(it = m_pic_handles.begin(); it != m_pic_handles.end(); it++)
{
//将Handle转换为CxImage对象
HANDLE imageHandle = (HANDLE)(*it);
CxImage cxImage;
cxImage.CreateFromHANDLE(imageHandle);
//cxImage.Save("C:\\bmp.bmp", CXIMAGE_FORMAT_BMP);
cxImage.Save(".\\temp\\temp.jpg", CXIMAGE_FORMAT_JPG);
char* imagedata = NULL;
DWORD size = 0;
CFile file(".\\temp\\temp.jpg", CFile::modeRead);
size = file.GetLength();
imagedata = new char[size];
memset(imagedata, 0, size);
file.Read(imagedata, size);
file.Close();
PDF_create_pvf(p, imagefile, 0, (const char*)imagedata, size, "");
image = PDF_load_image(p, "auto", imagefile, 0, "");
if (image == -1) {
char logInfo[LOGSIZE];
sprintf(logInfo, "Error: 加载PVF图像数据失败！错误号：%d, %s:%d\r\n", PDF_get_errmsg(p), __FILE__, __LINE__);
CTWainHelper::LogMessage(logInfo);
if(imagedata)
delete imagedata;
continue;
}
/* dummy page size, will be adjusted by PDF_fit_image() */
PDF_begin_page_ext(p, 10, 10, "");
PDF_fit_image(p, image, 0.0, 0.0, "adjustpage dpi {300 300}");
PDF_end_page_ext(p, "");
/* Delete the virtual file to free the allocated memory */
PDF_delete_pvf(p, imagefile, 0);
if(imagedata)
delete imagedata;
}
PDF_end_document(p, "");
::DeleteFile(".\\temp\\temp.jpg");
}
PDF_CATCH(p) {
char logInfo[LOGSIZE];
sprintf(logInfo, "EXCEPTION: PDFlib接口调用过程发生异常！错误信息：[%d] %s: %s, %s:%d\r\n",
PDF_get_errmsg(p), PDF_get_apiname(p), PDF_get_errmsg(p), __FILE__, __LINE__);
CTWainHelper::LogMessage(logInfo);
PDF_delete(p);
return FALSE;
}
PDF_delete(p);
return TRUE;
}
