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Leopard Sample Code: Cocoa
Cocoa provides classes for custom drawing based on Quartz graphics, and utility functions for common graphics tasks such as copying and drawing bitmap data. To go beyond what Cocoa provides, developers can use the graphics and imaging frameworks in Mac OS X. Cocoa applications have access to a wide variety of graphics technologies including Quartz 2D, Quartz Services, OpenGL, QuickTime, and the Mac OS X printing system.

View all Graphics & Imaging Sample Code.
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QTCoreVideo202 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using OpenGL PBO and the Core Video pixel buffer pipeline.
2009-04-07
QTCoreVideo301 (HTML) (DMG) (ZIP)
Demonstrates adding of effects & filters to QuickTime Movies in realtime using GLSL shaders and the Core Video texture pipeline.
2009-04-07
CALayerEssentials (HTML) (DMG) (ZIP)
Demonstrates the basics of setting up various Core Animation layers
2008-09-30
Squiggles (HTML) (DMG) (ZIP)
Demonstrates many Cocoa fundamentals in a Document-based Application featuring custom drawing and event-handling.
2008-08-29
Image Kit with Core Data (HTML) (DMG) (ZIP)
Using Image Kit's browser view with Core Data content.
2008-07-25
QTCoreVideo102 (HTML) (DMG) (ZIP)
An application demonstrating the use of QTKit, CoreVdeo, and OpenGL.
2008-06-06
QTCoreVideo103 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using OpenGL texture range and the Core Video pixel buffer pipeline.
2008-06-06
QTCoreVideo201 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using OpenGL FBO and the Core Video texture pipeline.
2008-06-06
CIColorTracking (HTML) (DMG) (ZIP)
An Objective-C applicaton that implements a GPU-based technique to find the location of a uniquely colored object in a scene
2008-04-24
OpenGL Filter Basics Cocoa (HTML) (DMG) (ZIP)
How to use Objective-C and MVC design patterns in installing and utilizing filters in an OpenGL rendering pipeline
2008-02-06
GeekGameBoard (HTML) (DMG) (ZIP)
Shows how to use Core Animation for the user interface of a board or card game.
2007-12-19
BoingX (HTML) (DMG) (ZIP)
Shows off using Quartz Extreme to provide borderless OpenGL content on the desktop.
2007-11-06
CocoaSlides (HTML) (DMG) (ZIP)
An image browser written using AppKit's Core Animation-based compositing and animation functionality
2007-11-02
Son of Grab (HTML) (DMG) (ZIP)
Shows how to use the new CGWindow to get window images from the Window Server.
2007-11-01
Cocoa OpenGL (HTML) (DMG) (ZIP)
Demonstrates using Cocoa with OpenGL, including window setup and event handling.
2007-10-22
MassiveImage (HTML) (DMG) (ZIP)
Shows how to use a CGDataProvider to save a very large image with Image IO
2007-09-27
Core Animation QuickTime Layer (HTML) (DMG) (ZIP)
Shows the use of controls in a Layer over a Core Animation QTMovieLayer
2007-09-26
Quartz 2D Shadings (HTML) (DMG) (ZIP)
Shows how to use CGShading and CGGradient objects to draw simple gradients.
2007-08-31
Quartz 2D Transformer (HTML) (DMG) (ZIP)
Shows how to use Quartz 2D to manipulate an image
2007-06-21
LayerBackedOpenGLView (HTML) (DMG) (ZIP)
"LayerBackedOpenGLView" provides a simple example of hosting Cocoa controls as subviews of an NSOpenGLView.
2007-06-12
BasicCocoaAnimations (HTML) (DMG) (ZIP)
"BasicCocoaAnimations" demonstrates the use of the animator proxy to easily animate Cocoa views and windows.
2007-06-11
QuartzComposerSamplePatches (HTML) (DMG) (ZIP)
A short list of new patches in Quartz Composer Mac OS X 10.5
2007-06-11
VideoHardwareInfo (HTML) (DMG) (ZIP)
Query VRAM, Quartz Extreme support, OpenGL extensions and renderer, GLSL version and support.
2007-05-14
PictureTaker (HTML) (DMG) (ZIP)
Demonstrates the PictureTaker in a basic Cocoa application
2007-04-02
ImageBrowser (HTML) (DMG) (ZIP)
Demonstrates the ImageKit's IKImageBrowserView to browse images in a basic Cocoa application.
2007-03-13
Grady (HTML) (DMG) (ZIP)
Demonstrates how to use the NSGradient class.
2007-02-28
MyCustomColorPicker (HTML) (DMG) (ZIP)
Shows how to write a custom color picker using Cocoa.
2006-10-09
CarbonQuartzComposer_TV (HTML) (DMG) (ZIP)
Demonstrates how to integrate Cocoa based QuartzComposer window into a Carbon based application
2006-10-02
ImageBackground (HTML) (DMG) (ZIP)
Shows how to draw an image in the background of an NSOutlineView and NSTableView.
2006-10-02
Quartz2DBasics (HTML) (DMG) (ZIP)
Carbon and Cocoa sample code demonstrating some basic usage of the Quartz 2D API
2006-09-11
QCFundamentals (HTML) (DMG) (ZIP)
Demonstrates Coordinate, Interpolation, and Iterative systems in Quartz Composer with an amusing animation
2006-08-07
QCGalaxy (HTML) (DMG) (ZIP)
Demonstrates use of Particle Systems and Core Image Filters in Quartz Composer
2006-08-07
LiveVideoMixer3 (HTML) (DMG) (ZIP)
LiveVideoMixer3 is extended to support Video In via QTKit
2006-08-01
PDF Annotation Editor (HTML) (DMG) (ZIP)
Demonstrates how to use PDF Kit to examine, edit, and create PDF annotations.
2006-07-31
PDF Calendar (HTML) (DMG) (ZIP)
Demonstrates how to use PDF Kit to create PDF content.
2006-07-31
CarbonCocoaCoreImageTab (HTML) (DMG) (ZIP)
Carbon-based application creates a Cocoa-based web window which used CoreImage filters to transition between tabbed WebViews
2006-07-25
GLSLShowpiece (HTML) (DMG) (ZIP)
GLSLShowpiece demonstrates several Vertex and Fragment shaders
2006-07-17
DragItemAround (HTML) (DMG) (ZIP)
Illustrates creating a custom subclass of NSView.
2006-03-16
PDFKitLinker2 (HTML) (DMG) (ZIP)
Demonstrates many aspects of PDFKit including navigation, display modes, searching, and PDFView subclassing.
2005-08-10
CIAnnotation (HTML) (DMG) (ZIP)
Image annotation application using Core Image Filters. Demonstrates creation and usage of Image Units.
2005-08-01
VideoViewer (HTML) (DMG) (ZIP)
Simple example of video rendering using QuickTime visual contexts, OpenGL, Core Video and Core Image.
2005-08-01
QTCoreImage101 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using Core Image filters and the new video pipeline.
2005-07-19
Quartz Composer QCTV (HTML) (DMG) (ZIP)
Shows how to build a fake TV system using Quartz Composer as the foundation motion graphics.
2005-07-06
Reducer (HTML) (DMG) (ZIP)
Simple utility for rescaling bitmapped images. Demonstrates use of Core Image, NSAnimation, view drawing redirection.
2005-06-06
UnsharpMask (HTML) (DMG) (ZIP)
Demonstrates how to build Automator actions using Cocoa frameworks.
2005-06-06
Link Snoop (HTML) (DMG) (ZIP)
Shows how to use PDFKit to scan for and highlight link annotations in PDFs.
2005-06-01
Quartz Composer Live DV (HTML) (DMG) (ZIP)
Shows how to export a Quartz Composer composition as a real-time DV stream on the FireWire port.
2005-06-01
Quartz Composer Matrix (HTML) (DMG) (ZIP)
Shows how to use Quartz Composer to display a QuickTime movie as a series of frames in a 3D world.
2005-06-01
Quartz Composer Offline Rendering (HTML) (DMG) (ZIP)
Shows how to render a Quartz Composer composition as a series of images using an OpenGL pBuffer.
2005-06-01
Quartz Composer Texture (HTML) (DMG) (ZIP)
Shows how to use a Quartz Composer composition as an OpenGL texture.
2005-06-01
Quartz Composer WWDC 2005 Composition (HTML) (DMG) (ZIP)
Shows how to build a parameterized motion graphics composition with Quartz Composer.
2005-06-01
Quartz Composer WWDC 2005 TextEdit (HTML) (DMG) (ZIP)
Demonstrate how to modify TextEdit's about dialog to display a Quartz Composer composition.
2005-06-01
QuartzLines (HTML) (DMG) (ZIP)
Drawing Lines using Quartz's CGPath & CGContextStrokeLineSegments functions.
2005-06-01
TexturePerformanceDemo (HTML) (DMG) (ZIP)
OpenGL texture optimization demo for WWDC Session 214
2005-06-01
VertexPerformanceDemo (HTML) (DMG) (ZIP)
Vertex optimization demo for WWDC Session 214
2005-06-01
Worm (HTML) (DMG) (ZIP)
NSView performance demonstration. Uses a periodic timer to get best performance with Coalesced Update feature.
2005-06-01
NSGLImage (HTML) (DMG) (ZIP)
Deprecated - Demonstrates how to texture in OpenGL with an NSImage and/or NSBitmapImageRep
2004-12-01
Video Hardware Info (HTML) (DMG) (ZIP)
Sample demonstrates how to query the video hardware for useful information.
2004-02-12
NSOpenGL Fullscreen (HTML) (DMG) (ZIP)
Demonstrates how to create and switch between windowed and fullscreen OpenGL contexts using NSOpenGL.
2004-02-11
ColorMatching (HTML) (DMG) (ZIP)
Performs simple color matching of images using ColorSync or the QuickTime 6.4 Graphics Importers.
2003-12-18
OpenGL Screensaver (HTML) (DMG) (ZIP)
Demonstrates how to integrate OpenGL drawing into a standard Cocoa screen saver on Mac OS X.
2003-12-10
RGB ValueTransformers (HTML) (DMG) (ZIP)
Supersedes the "RGB Image sample". Sample now uses bindings. Color separation now done in an NSValueTransformer subclass.
2003-11-18
FancyAbout (HTML) (DMG) (ZIP)
Demonstrates several visual effects for "About..." panels such as scrolling text, window without a title bar, and ways to dismiss the window.
2003-10-27
Cocoa CG aliasing demo (HTML) (DMG) (ZIP)
Shows how to draw both aliased and anti-aliased text and graphics using Quartz and Cocoa.
2003-07-17
Cocoa CG arc demo (HTML) (DMG) (ZIP)
Shows how to draw both aliased and anti-aliased arcs using Quartz and Cocoa.
2003-07-17
Monochrome Image (HTML) (DMG) (ZIP)
Applies the NTSC color weighting formula to an image to generate a monochrome version of the image.
2003-07-16
VBL (HTML) (DMG) (ZIP)
A simple example of how to create an OpenGLView in AppKit.
2003-07-07
FunkyOverlayWindow (HTML) (DMG) (ZIP)
Demonstrates several window layering, transparency and widget interaction techniques in Cocoa.
2003-05-08
CubePuzzle (HTML) (DMG) (ZIP)
Models a Rubik's Cube using Cocoa and OpenGL
2003-04-21
GLChildWindowDemo (HTML) (DMG) (ZIP)
Shows using Cocoa's child windows and Quartz Extreme to provide 2D/3D overlays above 3D content.
2003-04-21
OpenGLCompositorLab (HTML) (DMG) (ZIP)
Demonstrates using OpenGL to composite multiple sources in hardware. Requires NVIDIA GeForce 4 Ti hardware.
2003-04-21
Image Difference (HTML) (DMG) (ZIP)
Demonstrates a way to use Quartz's compositing capability to find the difference between two images.
2003-01-30
PDFView (HTML) (DMG) (ZIP)
Shows how to display or print a multi-page PDF document and scroll an NSscrollview's contents by dragging.
2003-01-23
CGDrawPicture (HTML) (DMG) (ZIP)
Deprecated - Shows how to use the QDPictDrawToCGContext API.
2003-01-14
Color Sampler (HTML) (DMG) (ZIP)
Demonstrates one way to sample the color at a given point in an NSView.
2003-01-14
ColorBars (HTML) (DMG) (ZIP)
Shows how to enumerate, select, capture, manipulate, draw to, and release displays using the CGDirectDisplay API.
2003-01-14
ColorSyncDevices-Cocoa (HTML) (DMG) (ZIP)
Demonstrates how to use the new ColorSync Device Manager routines in the Cocoa environment.
2003-01-14
Cropped Image (HTML) (DMG) (ZIP)
Demonstrates how to extract a sub-image from another image, and some ways of indicating a selection.
2003-01-14
CTMClip (HTML) (DMG) (ZIP)
Deprecated - Shows how to manipulate the Quartz 2D Current Transform Matrix (CTM) for image drawing with clipping.
2003-01-14
CTMDemo (HTML) (DMG) (ZIP)
Deprecated - Shows how to manipulate the Quartz 2D Current Transform Matrix (CTM) for image drawing without clipping.
2003-01-14
Polygons (HTML) (DMG) (ZIP)
Demonstrates the NSBezierPath class, as well as the manipulation of NSView's coordinate space for convenience.
2003-01-14
QTtoCG (HTML) (DMG) (ZIP)
Shows how to create a CGImageRef with the proper ColorSync profile from a QuickTime image on disk.
2003-01-14
Quartz EB (HTML) (DMG) (ZIP)
WWDC 2001 Early Bird Quartz 2D tutorial of vector drawing and PDF import/export.
2003-01-14
RGB Image (HTML) (DMG) (ZIP)
Demonstrates compositing to separate an NSimage into its RGB components, and how to recombine those components.
2003-01-14
RoundTransparentWindow (HTML) (DMG) (ZIP)
Creating (in Cocoa) custom-shaped windows and transparent window content; plus changing the shape of windows dynamically.
2003-01-14
SimpleCocoaJavaMovieCocoa (HTML) (DMG) (ZIP)
Deprecated - Shows how to use the NSMovieView and NSMovie Cocoa Java AppKit classes.
2003-01-14
SonOfSillyBalls (HTML) (DMG) (ZIP)
Draws a bunch of randomly colored, randomly placed, silly balls in a window on the screen.
2003-01-14
Tinted Image (HTML) (DMG) (ZIP)
Demonstrates the use of an NSImage as an off-screen drawing destination.
2003-01-14
Transformed Image (HTML) (DMG) (ZIP)
Shows the effects of a rendering an NSImage in a transformed coordinate space.
2003-01-14