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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>CIAnnotation - /PaintImageUnit/main.c</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Cocoa/index.html">Cocoa</a> > <a href="../../samplecode/Cocoa/idxGraphicsImaging-date.html">Graphics & Imaging</a> > <A HREF="javascript:location.replace('index.html');">CIAnnotation</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
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<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">CIAnnotation</div></h1></td>
</tr>
</table>
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<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/PaintImageUnit/main.c</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/AnnotationController.h</option>
<option value="listing2.html">/AnnotationController.m</option>
<option value="listing3.html">/AnnotationDocument.h</option>
<option value="listing4.html">/AnnotationDocument.m</option>
<option value="listing5.html">/AnnotationView.h</option>
<option value="listing6.html">/AnnotationView.m</option>
<option value="listing7.html">/CIImageLayer.h</option>
<option value="listing8.html">/CIImageLayer.m</option>
<option value="listing9.html">/CILayer.h</option>
<option value="listing10.html">/CILayer.m</option>
<option value="listing11.html">/CIPaintLayer.h</option>
<option value="listing12.html">/CIPaintLayer.m</option>
<option value="listing13.html">/CITextLayer.h</option>
<option value="listing14.html">/CITextLayer.m</option>
<option value="listing15.html">/LensImageUnit/LensFilter.h</option>
<option value="listing16.html">/LensImageUnit/LensFilter.m</option>
<option value="listing17.html">/LensImageUnit/MyPlugInLoader.h</option>
<option value="listing18.html">/LensImageUnit/MyPlugInLoader.m</option>
<option value="listing19.html">/main.m</option>
<option value="listing20.html">/OverlayWindow.h</option>
<option value="listing21.html">/OverlayWindow.m</option>
<option value="listing22.html">/PaintImageUnit/main.c</option>
<option value="listing23.html">/PaintImageUnit/MyPlugInLoader.h</option>
<option value="listing24.html">/PaintImageUnit/MyPlugInLoader.m</option>
<option value="listing25.html">/PaintImageUnit/PaintFilter.h</option>
<option value="listing26.html">/PaintImageUnit/PaintFilter.m</option>
<option value="listing27.html">/SampleCIScrollableView.h</option>
<option value="listing28.html">/SampleCIScrollableView.m</option>
<option value="listing29.html">/Utilities.h</option>
<option value="listing30.html">/Utilities.m</option></select>
</p>
</form>
<p><strong><a href="CIAnnotation.zip">Download Sample</a></strong> (“CIAnnotation.zip”, 1.01M)<BR>
<strong><a href="CIAnnotation.dmg">Download Sample</a></strong> (“CIAnnotation.dmg”, 1.37M)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">/* This is the default source file for new CIPlugin bundles. */
#include <QuartzCore/CIPlugInInterface.h>
#include <stdio.h>
#include <stdlib.h>
// The layout for an instance of MyType.
typedef struct _MyType {
CIPlugInFilterInterfaceStruct *_filterPlugInInterface;
CFUUIDRef _factoryID;
UInt32 _refCount;
} MyType;
// Forward declaration for the IUnknown implementation.
static void _deallocMyType( MyType *myInstance );
// -------------------------------------------------------------------------------------------
//
// Implementation of the IUnknown QueryInterface function.
//
static HRESULT myQueryInterface( void *myInstance, REFIID iid, LPVOID *ppv )
{
// Create a CoreFoundation UUIDRef for the requested interface.
CFUUIDRef interfaceID = CFUUIDCreateFromUUIDBytes( NULL, iid );
// Test the requested ID against the valid interfaces.
if( CFEqual( interfaceID, kCIPlugInFilterInterfaceID ) ) {
// If the TestInterface was requested, bump the ref count, set the ppv parameter
// equal to the instance, and return good status.
( (MyType *) myInstance )->_filterPlugInInterface->AddRef( myInstance );
*ppv = myInstance;
CFRelease( interfaceID );
return S_OK;
}
else if( CFEqual( interfaceID, IUnknownUUID ) ) {
// If the IUnknown interface was requested, same as above.
( (MyType *) myInstance )->_filterPlugInInterface->AddRef( myInstance );
*ppv = myInstance;
CFRelease( interfaceID );
return S_OK;
}
else {
// Requested interface unknown, bail with error.
*ppv = NULL;
CFRelease( interfaceID );
return E_NOINTERFACE;
}
}
// -------------------------------------------------------------------------------------------
//
// Implementation of reference counting for this type.
// Whenever an interface is requested, bump the refCount for the instance.
// NOTE: returning the refcount is a convention but is not required so don't rely on it.
//
static ULONG myAddRef( void *myInstance )
{
( (MyType *) myInstance )->_refCount += 1;
return ( (MyType *) myInstance )->_refCount;
}
// -------------------------------------------------------------------------------------------
//
// When an interface is released, decrement the refCount.
// If the refCount goes to zero, deallocate the instance.
//
static ULONG myRelease( void *myInstance )
{
( (MyType *) myInstance )->_refCount -= 1;
if ( ( (MyType *) myInstance )->_refCount == 0 ) {
_deallocMyType( (MyType *) myInstance );
return 0;
}
else
return ( (MyType *) myInstance )->_refCount;
}
// -------------------------------------------------------------------------------------------
//
// The implementation of the custom initialization function.
//
static bool myInitialize(void *theCIPlugInHost, void *myInstance )
{
printf("plugin initialized\n");
return true;
}
// -------------------------------------------------------------------------------------------
//
// The TestInterface function table.
//
static CIPlugInFilterInterfaceStruct filterPlugInInterfaceFtbl = {
NULL, // Required padding for COM
myQueryInterface, // These three are the required COM functions
myAddRef,
myRelease,
myInitialize,
NULL }; // Interface implementation
// -------------------------------------------------------------------------------------------
//
// Utility function that allocates a new instance.
//
static MyType *_allocMyType( CFUUIDRef factoryID )
{
// Allocate memory for the new instance.
MyType *newOne = (MyType *)malloc( sizeof(MyType) );
// Point to the function table
newOne->_filterPlugInInterface = &filterPlugInInterfaceFtbl;
// Retain and keep an open instance refcount for each factory.
if (factoryID) {
newOne->_factoryID = (CFUUIDRef)CFRetain( factoryID );
CFPlugInAddInstanceForFactory( factoryID );
}
// This function returns the IUnknown interface so set the refCount to one.
newOne->_refCount = 1;
return newOne;
}
// -------------------------------------------------------------------------------------------
//
// Utility function that deallocates the instance when the refCount goes to zero.
//
static void _deallocMyType( MyType *myInstance )
{
CFUUIDRef factoryID = myInstance->_factoryID;
free( myInstance );
if ( factoryID ) {
CFPlugInRemoveInstanceForFactory( factoryID );
CFRelease( factoryID );
}
}
// -------------------------------------------------------------------------------------------
//
// Implementation of the factory function for this type.
//
void *MyFactoryFunction( CFAllocatorRef allocator, CFUUIDRef typeID )
{
// If correct type is being requested, allocate an instance of TestType and return
// the IUnknown interface.
if ( CFEqual( typeID, kCIPlugInTypeID ) ) {
MyType *result = _allocMyType( kCIPlugInFilterInterfaceID );
return result;
}
else {
// If the requested type is incorrect, return NULL.
return NULL;
}
}</pre>
<!--googleoff: index -->
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
</tr>
<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/CIAnnotation/listing22.html%3Fid%3DDTS10003682-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/CIAnnotation/listing22.html%3Fid%3DDTS10003682-1.0&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/CIAnnotation/listing22.html%3Fid%3DDTS10003682-1.0&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
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