// --------------------------------------------------------------------------------------
static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat,
PMPrintSettings printSettings, const void *ourDataP,
const PrintingProcs *printingProcsP)
{
OSStatus err = noErr;
OSStatus tempErr = noErr;
UInt32 firstPage, lastPage, totalDocPages = MyGetDocumentNumPagesInDoc(ourDataP);
if(!err)
err = PMGetFirstPage(printSettings, &firstPage);
if (!err)
err = PMGetLastPage(printSettings, &lastPage);
if(!err && lastPage > totalDocPages){
// don't draw more than the number of pages in our document
lastPage = totalDocPages;
}
if (!err) // tell the printing system the number of pages we are going to print
err = PMSetLastPage(printSettings, lastPage, false);
// Note: we don't have to worry about the number of copies. The printing
// manager handles this. So we just iterate through the document from the
// first page to be printed, to the last.
if (!err)
{
PageDrawProc *drawProc = GetMyDrawPageProc(ourDataP);
err = printingProcsP->BeginDocumentProc(printSession, printSettings, pageFormat);
if (!err){
UInt32 pageNumber = firstPage;
// need to check errors from our print loop and errors from the session for each
// time around our print loop before calling our BeginPageProc
while(pageNumber <= lastPage && err == noErr && PMSessionError(printSession) == noErr)
{
err = printingProcsP->BeginPageProc(printSession, pageFormat, NULL);
if (!err){
GrafPtr oldPort = NULL;
void *printingContext = NULL;
GetPort(&oldPort); // preserve the existing port
err = PMSessionGetGraphicsContext(printSession, kPMGraphicsContextQuickdraw,
(void **)&printingContext);
if(!err){
Rect pageRect;
SetPort((CGrafPtr)printingContext);
GetPortBounds(printingContext, &pageRect);
err = drawProc(ourDataP, &pageRect, pageNumber); // image the correct page
SetPort(oldPort); // restore the prior port
}
// we must call EndPage if BeginPage returned noErr
tempErr = printingProcsP->EndPageProc(printSession);
if(!err)err = tempErr;
}
pageNumber++;
} // end while loop
// we must call EndDocument if BeginDocument returned noErr
tempErr = printingProcsP->EndDocumentProc(printSession);
if(!err)err = tempErr;
if(!err)
err = PMSessionError(printSession);
}
}
return err;
}
// --------------------------------------------------------------------------------------------------------------
static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat,
PMPrintSettings printSettings, const void *ourDataP)
{
OSStatus err = noErr;
OSStatus tempErr = noErr;
UInt32 firstPage, lastPage, totalDocPages = MyGetDocumentNumPagesInDoc(ourDataP);
PMResolution res;
float ourAppScaling = 1.;
err = PMGetResolution(pageFormat, &res);
if(!err){
ourAppScaling = res.hRes/72.; // the scale factor we are applying
}
if(!err)
err = PMGetFirstPage(printSettings, &firstPage);
if (!err)
err = PMGetLastPage(printSettings, &lastPage);
if(!err && lastPage > totalDocPages){
// don't draw more than the number of pages in our document
lastPage = totalDocPages;
}
if (!err) // tell the printing system the number of pages we are going to print
err = PMSetLastPage(printSettings, lastPage, false);
if (!err)
{
PageDrawProc *drawProc = GetMyDrawPageProc(ourDataP);
err = PMSessionBeginDocument(printSession, printSettings, pageFormat);
if (!err){
UInt32 pageNumber;
for(pageNumber = firstPage;
err == noErr && (err = PMSessionError(printSession)) == noErr && pageNumber <= lastPage;
pageNumber++
){
err = PMSessionBeginPage(printSession, pageFormat, NULL);
if (!err){
GrafPtr oldPort = NULL;
void *printingContext = NULL;
GetPort(&oldPort); // preserve the existing port
err = PMSessionGetGraphicsContext(printSession, kPMGraphicsContextQuickdraw,
(void **)&printingContext);
if(!err){
SetPort((CGrafPtr)printingContext);
err = drawProc(ourDataP, ourAppScaling); // supply app drawing resolution
SetPort(oldPort); // restore the prior port
}
tempErr = PMSessionEndPage(printSession);
if(!err)err = tempErr;
}
} // end for loop
tempErr = PMSessionEndDocument(printSession);
if(!err)err = tempErr;
}
}
return err;
}
