source: Sophya/trunk/SophyaPI/PI/Quartz/Test/Quartz2DBasics/Quartz2DBasics.carbon/DoPrinting.c

/*
 
 File: DoPrinting.c
 
 Abstract: Printing code for Carbon project.
 
 Version: <1.0>
 
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 Inc. may be used to endorse or promote products derived from the Apple
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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
 
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*/ 



#include "DoPrinting.h"
#include "AppDrawing.h"
#include "UIHandling.h"

// This code only prints one page.
#define NUMDOCPAGES             1

static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, 
                                    PMPrintSettings printSettings, OSType command);

// -----------------------------------------------------------------------
PMPageFormat CreateDefaultPageFormat(void)
{
    OSStatus err = noErr, tempErr;
    PMPageFormat pageFormat = NULL;
    PMPrintSession printSession;
    err = PMCreateSession(&printSession);
    if(!err){
        err = PMCreatePageFormat(&pageFormat);
        if(err == noErr)
            err = PMSessionDefaultPageFormat(printSession, pageFormat);

        tempErr = PMRelease(printSession);
        if(!err)err = tempErr;
    }
    if(err){
        fprintf(stderr, "Got an error = %d creating the default page format\n", err);
    }
    return pageFormat;
}

// -----------------------------------------------------------------
OSStatus DoPageSetup(PMPageFormat pageFormat)
{
    OSStatus            err = noErr;
    PMPrintSession printSession;
    err = PMCreateSession(&printSession);
    if(!err){
        Boolean accepted;
        if(!err) // Validate the page format we're going to pass to the dialog code.
            err = PMSessionValidatePageFormat(printSession, pageFormat, kPMDontWantBoolean);

        if(!err){
            err = PMSessionPageSetupDialog(printSession, pageFormat, &accepted);
        }
           
        (void)PMRelease(printSession);
    }
    
    if(err && err != kPMCancel)
        fprintf(stderr, "Got an error %d in Page Setup\n", err);

    return err;
} // DoPageSetup



// -------------------------------------------------------------------------------
OSStatus DoPrint(PMPageFormat pageFormat, OSType drawingCommand)
{
    OSStatus err = noErr;
    UInt32 minPage = 1, maxPage = NUMDOCPAGES;  // One page document printing.
    PMPrintSession printSession;
        
    err = PMCreateSession(&printSession);
    if(err == noErr){
        err = PMSessionValidatePageFormat(printSession, pageFormat, kPMDontWantBoolean);
        if (err == noErr)
        {
            PMPrintSettings printSettings = NULL;
            err = PMCreatePrintSettings(&printSettings);
            if(err == noErr)
                err = PMSessionDefaultPrintSettings(printSession, printSettings);

            if (err == noErr)
                err = PMSetPageRange(printSettings, minPage, maxPage);

            if (err == noErr)
            {
                Boolean accepted;
                err = PMSessionPrintDialog(printSession, printSettings, pageFormat, &accepted);

                if(!err && accepted){
                    err = MyDoPrintLoop(printSession, pageFormat, printSettings, drawingCommand);
                }
            }
            if(printSettings)
                (void)PMRelease(printSettings);
        }

        (void)PMRelease(printSession); 
    }
    
    if(err && err != kPMCancel)
        fprintf(stderr, "Got an error %d in DoPrint!\n", err);
    
    return err;
}

// --------------------------------------------------------------------------------------
static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, 
                                    PMPrintSettings printSettings, OSType drawingType)
{
    OSStatus err = noErr;
    OSStatus tempErr = noErr;
    UInt32 firstPage, lastPage, totalDocPages = NUMDOCPAGES;    // Only print 1 page.
    
    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;
    }

        // Tell the printing system the number of pages we are going to print.
    if (!err)           
        err = PMSetLastPage(printSettings, lastPage, false);

    if (!err)
    {
        err = PMSessionBeginCGDocument(printSession, printSettings, pageFormat);
        if (!err){
            UInt32 pageNumber = firstPage;
            // Need to check errors from our print loop and errors from the session each
            // time around our print loop before calling our BeginPageProc.
            while(pageNumber <= lastPage && err == noErr && PMSessionError(printSession) == noErr)
            {
                err = PMSessionBeginPage(printSession, pageFormat, NULL);
                if (!err){
                    CGContextRef printingContext = NULL;
                                        // Get the printing CGContext to draw to.
                    err = PMSessionGetCGGraphicsContext(printSession, &printingContext);
                    if(!err){
                        myDispatchDrawing(printingContext, drawingType);
                    }
                    // We must call EndPage if BeginPage returned noErr.
                    tempErr = PMSessionEndPage(printSession);
                        
                    if(!err)err = tempErr;
                }
                pageNumber++;
            }   // End of while loop.
            
            // We must call EndDocument if BeginDocument returned noErr.
            tempErr = PMSessionEndDocument(printSession);

            if(!err)err = tempErr;

            if(!err)
                err = PMSessionError(printSession);
        }
    }
    return err;
}