experimental/CiCarbonSampleMain.c - skia - Git at Google

 /*

 File: main.c

 Abstract:   Main event loop and app handling code is found in here.

 Version: 1.0

 � Copyright 2005 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 this Apple software
 constitutes acceptance of these terms.  If you do
 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 OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
 REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF
 THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
 UNDER THEORY OF CONTRACT, TORT (INCLUDING
 NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
 IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGE.

 */


 #include <Carbon/Carbon.h>
 #include "CIDraw.h"

 /* Constants */
 #define kMyHIViewSignature 'ciHV'
 #define kMyHIViewFieldID    128
 #define kGammaSliderSignature 'gSLD'
 #define kGammaSliderFieldID    128
 #define	kAboutBoxStringKey		CFSTR("AboutString")	// these key the localizable strings

 /* Private Prototypes */
 static OSStatus MyDrawEventHandler(EventHandlerCallRef myHandler, EventRef event, void *userData);
 static void MyGammaSliderProc( ControlHandle control, SInt16 part );
 static pascal OSStatus DoAppCommandProcess(EventHandlerCallRef nextHandler, EventRef theEvent, void* userData);
 static PMPageFormat CreateDefaultPageFormat(void);
 static OSStatus DoPageSetup(PMPageFormat pageFormat);
 static OSStatus DoPrint(PMPageFormat pageFormat);
 static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, PMPrintSettings printSettings);
 static void DoAboutBox();

 /* Global Data */
 static HIViewRef    gMyHIView = NULL;
 static HIViewRef    gGammaSliderView = NULL;
 static PMPageFormat gPageFormat = NULL;

 int main(int argc, char* argv[])
 {
     static const HIViewID	kMyViewID = {kMyHIViewSignature,  kMyHIViewFieldID };
     static const HIViewID	kGammaSliderID = {kGammaSliderSignature,  kGammaSliderFieldID };

     IBNibRef			nibRef;
     WindowRef			window;
     EventTargetRef		myEventTarget;
     static const EventTypeSpec 	kMyViewEvents[] = {kEventClassControl, kEventControlDraw };
     static const EventTypeSpec 	kMyCommandEvents[] = {kEventClassCommand, kEventCommandProcess };
     OSStatus			err = noErr;

     // Create a Nib reference passing the name of the nib file (without the .nib extension)
     // CreateNibReference only searches into the application bundle.
     err = CreateNibReference(CFSTR("main"), &nibRef);
     require_noerr( err, CantGetNibRef );

     // Once the nib reference is created, set the menu bar. "MainMenu" is the name of the menu bar
     // object. This name is set in InterfaceBuilder when the nib is created.
     err = SetMenuBarFromNib(nibRef, CFSTR("MenuBar"));
     require_noerr( err, CantSetMenuBar );

     // Then create a window. "MainWindow" is the name of the window object. This name is set in
     // InterfaceBuilder when the nib is created.
     err = CreateWindowFromNib(nibRef, CFSTR("MainWindow"), &window);
     require_noerr( err, CantCreateWindow );
     // Get the HIView associated with the window.
     HIViewFindByID( HIViewGetRoot( window ), kMyViewID, &gMyHIView );

     // make the view opaque
     HIViewChangeFeatures(gMyHIView, kHIViewIsOpaque, 0);

     // Get the event target for the view.
     myEventTarget = GetControlEventTarget (gMyHIView);

     // Install the event handler for the HIView.
     err = InstallEventHandler (myEventTarget,
 						    NewEventHandlerUPP (MyDrawEventHandler),
 						    GetEventTypeCount(kMyViewEvents),
 						    kMyViewEvents,
 						    (void *) gMyHIView,
 						    NULL);


     HIViewFindByID( HIViewGetRoot( window ), kGammaSliderID, &gGammaSliderView );
     SetControlAction( gGammaSliderView, NewControlActionUPP(MyGammaSliderProc) );

     // Install the handler for the menu commands.
     InstallApplicationEventHandler(NewEventHandlerUPP(DoAppCommandProcess), GetEventTypeCount(kMyCommandEvents),
 						kMyCommandEvents, NULL, NULL);


     // We don't need the nib reference anymore.
     DisposeNibReference(nibRef);

     // The window was created hidden so show it.
     ShowWindow( window );

     // Call the event loop
     RunApplicationEventLoop();

 CantCreateWindow:
 CantSetMenuBar:
 CantGetNibRef:
 	return err;
 }

 static const void* myGetBytesPointer(void* info) {
     return info;
 }

 static void myReleaseBytePointer(void* info, const void* pointer) {
     pointer = 0;
 }

 static size_t myGetBytesAtPosition(void* info, void* buffer, off_t pos, size_t count) {
     memcpy(buffer, (const char*)info + pos, count);
     return count;
 }

 static void myReleaseInfo(void* info) {
 }

 static void TestDraw(CGContextRef cg, CGRect bounds) {
     const int w = 64;
     const int h = 64;
     uint32_t data[w*h];
     int i;
     for (i = 0; i < w*h; i++) {
         data[i] = 0x00008888;
     }
     CGDataProviderDirectCallbacks procs;
     procs.version = 0;
     procs.getBytePointer = myGetBytesPointer;
     procs.releaseBytePointer = myReleaseBytePointer;
     procs.getBytesAtPosition = myGetBytesAtPosition;
     procs.releaseInfo = myReleaseInfo;

     CGColorSpaceRef space = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);

     size_t size = w * h * 4;
     CGDataProviderRef dataRef = CGDataProviderCreateDirect(data, size, &procs);
     CGImageRef ref = CGImageCreate(w, h, 8, 32, w*4,
                                    space,
                                    kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedLast,
                                    dataRef,
                                    NULL,
                                    false,
                                    kCGRenderingIntentDefault);

     CGColorSpaceRelease(space);
     CGDataProviderRelease(dataRef);

     CGRect r = CGRectMake(0, 0, w, h);
     CGContextDrawImage(cg, r, ref);
     CGImageRelease(ref);
 }

 static OSStatus MyDrawEventHandler(EventHandlerCallRef myHandler, EventRef event, void *userData)
 {
 	// NOTE: GState is save/restored by the HIView system doing the callback, so the draw handler doesn't need to do it

 	OSStatus status = noErr;
 	CGContextRef context;
 	HIRect		bounds;

 	// Get the CGContextRef
 	status = GetEventParameter (event, kEventParamCGContextRef,
 					typeCGContextRef, NULL,
 					sizeof (CGContextRef),
 					NULL,
 					&context);

 	if(status != noErr){
 		fprintf(stderr, "Got error %d getting the context!\n", status);
 		return status;
 	}

 	// Get the bounding rectangle
 	HIViewGetBounds ((HIViewRef) userData, &bounds);

 	// Flip the coordinates by translating and scaling. This produces a
 	// coordinate system that matches the Quartz default coordinate system
 	// with the origin in the lower-left corner with the y axis pointing up.

 //	CGContextTranslateCTM (context, 0, bounds.size.height);
 //	CGContextScaleCTM (context, 1.0, -1.0);

 //	DoDraw(context, bounds);
 	TestDraw(context, bounds);
 	return status;

 }

 static void MyGammaSliderProc( ControlHandle control, SInt16 part )
 {
 	gGammaValue = GetControl32BitValue(control);
 	HIViewSetNeedsDisplay(gMyHIView, true);
 	HIViewRender(gMyHIView);
 }


 // Handle command-process events at the application level
 static pascal OSStatus DoAppCommandProcess(EventHandlerCallRef nextHandler, EventRef theEvent, void* userData)
 {
 #pragma unused (nextHandler, userData)
     HICommand  aCommand;
     OSStatus   result = eventNotHandledErr;

     GetEventParameter(theEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof(HICommand), NULL, &aCommand);

     switch (aCommand.commandID)
     {

 	case kHICommandPageSetup:
 	    if(gPageFormat == NULL)
 		gPageFormat = CreateDefaultPageFormat();

 	    if(gPageFormat)
 		(void)DoPageSetup(gPageFormat);

 	    result = noErr;
 	    break;

 	case kHICommandPrint:
 	    if(gPageFormat == NULL)
 		gPageFormat = CreateDefaultPageFormat();

 	    if(gPageFormat)
 		(void)DoPrint(gPageFormat);

 	    result = noErr;
 	    break;

 	case kHICommandAbout:
 	    DoAboutBox();
 	    result = noErr;
 	    break;

 	default:
 	    break;

 	case kHICommandQuit:
 		QuitApplicationEventLoop();
 		result = noErr;
 		break;
     }
     HiliteMenu(0);
     return result;
 }

 static void DoAboutBox()
 {
     CFStringRef outString = NULL;
     SInt16      alertItemHit = 0;
     Str255      stringBuf;

     outString =  CFCopyLocalizedString(kAboutBoxStringKey, NULL);
     if (outString != NULL)
     {
 		if (CFStringGetPascalString (outString, stringBuf, sizeof(stringBuf), GetApplicationTextEncoding()))
 		{
 			StandardAlert(kAlertStopAlert, stringBuf, NULL, NULL, &alertItemHit);
 		}
 		CFRelease (outString);
     }
 }

 // -----------------------------------------------------------------------
 static PMPageFormat CreateDefaultPageFormat(void)
 {
     OSStatus err = noErr, tempErr;
     PMPageFormat pageFormat = NULL;
     PMPrintSession printSession;
     err = PMCreateSession(&printSession);
     if(!err){
 	err = PMCreatePageFormat(&pageFormat);	// we own a reference to this page format
 	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;
 }

 // -----------------------------------------------------------------
 static 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

 // -------------------------------------------------------------------------------
 static OSStatus DoPrint(PMPageFormat pageFormat)
 {
     OSStatus err = noErr;
     UInt32 minPage = 1, maxPage = 1;
     PMPrintSession printSession;
     err = PMCreateSession(&printSession);
     if(err == noErr){
 	// validate the page format we're going to use
 	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(accepted){
 		    err = MyDoPrintLoop(printSession, pageFormat, printSettings);
 		}
             }
 	    if(printSettings)
 		(void)PMRelease(printSettings);
         }

         (void)PMRelease(printSession);   // ignoring error since we already have one
     }

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

 // --------------------------------------------------------------------------------------
 static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, PMPrintSettings printSettings)
 {
     OSStatus err = noErr;
     OSStatus tempErr = noErr;
     UInt32 firstPage, lastPage, totalDocPages = 1;

     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)
     {
         err = PMSessionBeginCGDocument(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 = PMSessionBeginPage(printSession, pageFormat, NULL);
                 if (!err){
                     CGContextRef printingContext = NULL;
                     err = PMSessionGetCGGraphicsContext(printSession, &printingContext);
                     if(!err){
 			PMRect       pageRect;

 			PMGetAdjustedPaperRect(pageFormat, &pageRect);
 			DoDraw(printingContext, CGRectMake(pageRect.left, pageRect.top, pageRect.right - pageRect.left, pageRect.bottom - pageRect.top));
                     }
                     // we must call EndPage if BeginPage returned noErr
 		    tempErr = PMSessionEndPage(printSession);

 		    if(!err)err = tempErr;
                 }
 		pageNumber++;
             }	// end while loop

             // we must call EndDocument if BeginDocument returned noErr
 	    tempErr = PMSessionEndDocument(printSession);

 	    if(!err)err = tempErr;
 	    if(!err)
 		err = PMSessionError(printSession);
         }
     }
     return err;
 }
	/*

	File: main.c

	Abstract: Main event loop and app handling code is found in here.

	Version: 1.0

	� Copyright 2005 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 this Apple software
	constitutes acceptance of these terms. If you do
	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 OR CONSEQUENTIAL
	DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
	OF USE, DATA, OR PROFITS; OR BUSINESS
	INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
	REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF
	THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
	UNDER THEORY OF CONTRACT, TORT (INCLUDING
	NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
	IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
	SUCH DAMAGE.

	*/


	#include <Carbon/Carbon.h>
	#include "CIDraw.h"

	/* Constants */
	#define kMyHIViewSignature 'ciHV'
	#define kMyHIViewFieldID 128
	#define kGammaSliderSignature 'gSLD'
	#define kGammaSliderFieldID 128
	#define kAboutBoxStringKey CFSTR("AboutString") // these key the localizable strings

	/* Private Prototypes */
	static OSStatus MyDrawEventHandler(EventHandlerCallRef myHandler, EventRef event, void *userData);
	static void MyGammaSliderProc( ControlHandle control, SInt16 part );
	static pascal OSStatus DoAppCommandProcess(EventHandlerCallRef nextHandler, EventRef theEvent, void* userData);
	static PMPageFormat CreateDefaultPageFormat(void);
	static OSStatus DoPageSetup(PMPageFormat pageFormat);
	static OSStatus DoPrint(PMPageFormat pageFormat);
	static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, PMPrintSettings printSettings);
	static void DoAboutBox();

	/* Global Data */
	static HIViewRef gMyHIView = NULL;
	static HIViewRef gGammaSliderView = NULL;
	static PMPageFormat gPageFormat = NULL;

	int main(int argc, char* argv[])
	{
	static const HIViewID kMyViewID = {kMyHIViewSignature, kMyHIViewFieldID };
	static const HIViewID kGammaSliderID = {kGammaSliderSignature, kGammaSliderFieldID };

	IBNibRef nibRef;
	WindowRef window;
	EventTargetRef myEventTarget;
	static const EventTypeSpec kMyViewEvents[] = {kEventClassControl, kEventControlDraw };
	static const EventTypeSpec kMyCommandEvents[] = {kEventClassCommand, kEventCommandProcess };
	OSStatus err = noErr;

	// Create a Nib reference passing the name of the nib file (without the .nib extension)
	// CreateNibReference only searches into the application bundle.
	err = CreateNibReference(CFSTR("main"), &nibRef);
	require_noerr( err, CantGetNibRef );

	// Once the nib reference is created, set the menu bar. "MainMenu" is the name of the menu bar
	// object. This name is set in InterfaceBuilder when the nib is created.
	err = SetMenuBarFromNib(nibRef, CFSTR("MenuBar"));
	require_noerr( err, CantSetMenuBar );

	// Then create a window. "MainWindow" is the name of the window object. This name is set in
	// InterfaceBuilder when the nib is created.
	err = CreateWindowFromNib(nibRef, CFSTR("MainWindow"), &window);
	require_noerr( err, CantCreateWindow );
	// Get the HIView associated with the window.
	HIViewFindByID( HIViewGetRoot( window ), kMyViewID, &gMyHIView );

	// make the view opaque
	HIViewChangeFeatures(gMyHIView, kHIViewIsOpaque, 0);

	// Get the event target for the view.
	myEventTarget = GetControlEventTarget (gMyHIView);

	// Install the event handler for the HIView.
	err = InstallEventHandler (myEventTarget,
	NewEventHandlerUPP (MyDrawEventHandler),
	GetEventTypeCount(kMyViewEvents),
	kMyViewEvents,
	(void *) gMyHIView,
	NULL);


	HIViewFindByID( HIViewGetRoot( window ), kGammaSliderID, &gGammaSliderView );
	SetControlAction( gGammaSliderView, NewControlActionUPP(MyGammaSliderProc) );

	// Install the handler for the menu commands.
	InstallApplicationEventHandler(NewEventHandlerUPP(DoAppCommandProcess), GetEventTypeCount(kMyCommandEvents),
	kMyCommandEvents, NULL, NULL);


	// We don't need the nib reference anymore.
	DisposeNibReference(nibRef);

	// The window was created hidden so show it.
	ShowWindow( window );

	// Call the event loop
	RunApplicationEventLoop();

	CantCreateWindow:
	CantSetMenuBar:
	CantGetNibRef:
	return err;
	}

	static const void* myGetBytesPointer(void* info) {
	return info;
	}

	static void myReleaseBytePointer(void* info, const void* pointer) {
	pointer = 0;
	}

	static size_t myGetBytesAtPosition(void* info, void* buffer, off_t pos, size_t count) {
	memcpy(buffer, (const char*)info + pos, count);
	return count;
	}

	static void myReleaseInfo(void* info) {
	}

	static void TestDraw(CGContextRef cg, CGRect bounds) {
	const int w = 64;
	const int h = 64;
	uint32_t data[w*h];
	int i;
	for (i = 0; i < w*h; i++) {
	data[i] = 0x00008888;
	}
	CGDataProviderDirectCallbacks procs;
	procs.version = 0;
	procs.getBytePointer = myGetBytesPointer;
	procs.releaseBytePointer = myReleaseBytePointer;
	procs.getBytesAtPosition = myGetBytesAtPosition;
	procs.releaseInfo = myReleaseInfo;

	CGColorSpaceRef space = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);

	size_t size = w * h * 4;
	CGDataProviderRef dataRef = CGDataProviderCreateDirect(data, size, &procs);
	CGImageRef ref = CGImageCreate(w, h, 8, 32, w*4,
	space,
	kCGBitmapByteOrder32Little \| kCGImageAlphaPremultipliedLast,
	dataRef,
	NULL,
	false,
	kCGRenderingIntentDefault);

	CGColorSpaceRelease(space);
	CGDataProviderRelease(dataRef);

	CGRect r = CGRectMake(0, 0, w, h);
	CGContextDrawImage(cg, r, ref);
	CGImageRelease(ref);
	}

	static OSStatus MyDrawEventHandler(EventHandlerCallRef myHandler, EventRef event, void *userData)
	{
	// NOTE: GState is save/restored by the HIView system doing the callback, so the draw handler doesn't need to do it

	OSStatus status = noErr;
	CGContextRef context;
	HIRect bounds;

	// Get the CGContextRef
	status = GetEventParameter (event, kEventParamCGContextRef,
	typeCGContextRef, NULL,
	sizeof (CGContextRef),
	NULL,
	&context);

	if(status != noErr){
	fprintf(stderr, "Got error %d getting the context!\n", status);
	return status;
	}

	// Get the bounding rectangle
	HIViewGetBounds ((HIViewRef) userData, &bounds);

	// Flip the coordinates by translating and scaling. This produces a
	// coordinate system that matches the Quartz default coordinate system
	// with the origin in the lower-left corner with the y axis pointing up.

	// CGContextTranslateCTM (context, 0, bounds.size.height);
	// CGContextScaleCTM (context, 1.0, -1.0);

	// DoDraw(context, bounds);
	TestDraw(context, bounds);
	return status;

	}

	static void MyGammaSliderProc( ControlHandle control, SInt16 part )
	{
	gGammaValue = GetControl32BitValue(control);
	HIViewSetNeedsDisplay(gMyHIView, true);
	HIViewRender(gMyHIView);
	}


	// Handle command-process events at the application level
	static pascal OSStatus DoAppCommandProcess(EventHandlerCallRef nextHandler, EventRef theEvent, void* userData)
	{
	#pragma unused (nextHandler, userData)
	HICommand aCommand;
	OSStatus result = eventNotHandledErr;

	GetEventParameter(theEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof(HICommand), NULL, &aCommand);

	switch (aCommand.commandID)
	{

	case kHICommandPageSetup:
	if(gPageFormat == NULL)
	gPageFormat = CreateDefaultPageFormat();

	if(gPageFormat)
	(void)DoPageSetup(gPageFormat);

	result = noErr;
	break;

	case kHICommandPrint:
	if(gPageFormat == NULL)
	gPageFormat = CreateDefaultPageFormat();

	if(gPageFormat)
	(void)DoPrint(gPageFormat);

	result = noErr;
	break;

	case kHICommandAbout:
	DoAboutBox();
	result = noErr;
	break;

	default:
	break;

	case kHICommandQuit:
	QuitApplicationEventLoop();
	result = noErr;
	break;
	}
	HiliteMenu(0);
	return result;
	}

	static void DoAboutBox()
	{
	CFStringRef outString = NULL;
	SInt16 alertItemHit = 0;
	Str255 stringBuf;

	outString = CFCopyLocalizedString(kAboutBoxStringKey, NULL);
	if (outString != NULL)
	{
	if (CFStringGetPascalString (outString, stringBuf, sizeof(stringBuf), GetApplicationTextEncoding()))
	{
	StandardAlert(kAlertStopAlert, stringBuf, NULL, NULL, &alertItemHit);
	}
	CFRelease (outString);
	}
	}

	// -----------------------------------------------------------------------
	static PMPageFormat CreateDefaultPageFormat(void)
	{
	OSStatus err = noErr, tempErr;
	PMPageFormat pageFormat = NULL;
	PMPrintSession printSession;
	err = PMCreateSession(&printSession);
	if(!err){
	err = PMCreatePageFormat(&pageFormat); // we own a reference to this page format
	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;
	}

	// -----------------------------------------------------------------
	static 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

	// -------------------------------------------------------------------------------
	static OSStatus DoPrint(PMPageFormat pageFormat)
	{
	OSStatus err = noErr;
	UInt32 minPage = 1, maxPage = 1;
	PMPrintSession printSession;
	err = PMCreateSession(&printSession);
	if(err == noErr){
	// validate the page format we're going to use
	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(accepted){
	err = MyDoPrintLoop(printSession, pageFormat, printSettings);
	}
	}
	if(printSettings)
	(void)PMRelease(printSettings);
	}

	(void)PMRelease(printSession); // ignoring error since we already have one
	}

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

	// --------------------------------------------------------------------------------------
	static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, PMPrintSettings printSettings)
	{
	OSStatus err = noErr;
	OSStatus tempErr = noErr;
	UInt32 firstPage, lastPage, totalDocPages = 1;

	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)
	{
	err = PMSessionBeginCGDocument(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 = PMSessionBeginPage(printSession, pageFormat, NULL);
	if (!err){
	CGContextRef printingContext = NULL;
	err = PMSessionGetCGGraphicsContext(printSession, &printingContext);
	if(!err){
	PMRect pageRect;

	PMGetAdjustedPaperRect(pageFormat, &pageRect);
	DoDraw(printingContext, CGRectMake(pageRect.left, pageRect.top, pageRect.right - pageRect.left, pageRect.bottom - pageRect.top));
	}
	// we must call EndPage if BeginPage returned noErr
	tempErr = PMSessionEndPage(printSession);

	if(!err)err = tempErr;
	}
	pageNumber++;
	} // end while loop

	// we must call EndDocument if BeginDocument returned noErr
	tempErr = PMSessionEndDocument(printSession);

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