AppUsingSheets/Source/PDEHandling.c

/*
********************************************************************************
 
    $Log: PDEHandling.c,v $
 
 
    (c) Copyright 2002 Apple Computer, Inc.  All rights reserved.
    
    IMPORTANT: This Apple software is supplied to you by Apple Computer,
    Inc. ("Apple") in consideration of your agreement to the following
    terms, and your use, installation, modification or redistribution of
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    not agree with these terms, please do not use, install, modify or
    redistribute this Apple software.
    
    In consideration of your agreement to abide by the following terms, and
    subject to these terms, Apple grants you a personal, non-exclusive
    license, under Apple's copyrights in this original Apple software (the
    "Apple Software"), to use, reproduce, modify and redistribute the Apple
    Software, with or without modifications, in source and/or binary forms;
    provided that if you redistribute the Apple Software in its entirety and
    without modifications, you must retain this notice and the following
    text and disclaimers in all such redistributions of the Apple Software.
    Neither the name, trademarks, service marks or logos of Apple Computer,
    Inc. may be used to endorse or promote products derived from the Apple
    Software without specific prior written permission from Apple.  Except
    as expressly stated in this notice, no other rights or licenses, express
    or implied, are granted by Apple herein, including but not limited to
    any patent rights that may be infringed by your derivative works or by
    other works in which the Apple Software may be incorporated.
    
    The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES
    NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
    IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR
    A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
    OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
    
    IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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********************************************************************************
*/
 
#include "PDEHandling.h"
 
 
/*
--------------------------------------------------------------------------------
    MyRegisterPDE
--------------------------------------------------------------------------------
*/
 
OSStatus MyRegisterPDE (CFStringRef plugin)
{
    OSStatus result = kPMInvalidPDEContext;
 
    CFURLRef pluginsURL = CFBundleCopyBuiltInPlugInsURL (
        CFBundleGetMainBundle()
    );
 
    if (pluginsURL != NULL)
    {
        CFURLRef myPluginURL = CFURLCreateCopyAppendingPathComponent (
            NULL, 
            pluginsURL,
            plugin,
            FALSE
        );
 
        if (myPluginURL != NULL) 
        {
            // we intentionally discard the return value
            if (CFPlugInCreate (NULL, myPluginURL) != NULL) {
                result = noErr;
            }
            
            CFRelease (myPluginURL);
        }
 
        CFRelease (pluginsURL);
    }
 
    return result;
}
 
 
/*
--------------------------------------------------------------------------------
    MyGetPDEData
--------------------------------------------------------------------------------
*/
 
/*
    Retrieves the extended data stored in a print settings ticket 
    by an application-hosted PDE.
*/
 
OSStatus MyGetPDEData (
    PMPrintSettings printSettings, 
    MySettings *mysettingsP
)
 
{
    UInt32 bufferSize = sizeof(*mysettingsP);
    UInt32 extendedDataSize = 0;
    OSStatus result = noErr;
 
    result = PMGetPrintSettingsExtendedData (
                printSettings, 
                kMyBundleCreatorCode, 
                &extendedDataSize, 
                kPMDontWantData);
                
    if (result == noErr) 
    {
        if (bufferSize == extendedDataSize)
        {
            result = PMGetPrintSettingsExtendedData (
                printSettings,
                kMyBundleCreatorCode,
                kPMDontWantSize,
                mysettingsP);
        }
        else
        {
            // we didn't get our extended data
            result = kPMInvalidPDEContext;
            // another course of action might be to 
            // simply pass back default settings
        }
    }
 
    return result;
}
 
 
/*
--------------------------------------------------------------------------------
    MyDebugMessage
--------------------------------------------------------------------------------
*/
 
extern void MyDebugMessage (char *msg, SInt32 value)
{
    char *debug = getenv ("PDEDebug");
    if (debug != NULL)
    {
        fprintf (stdout, "%s (%d)\n", msg, (int) value);
        fflush (stdout);
    }
}
 
 
// END OF SOURCE