Examples for Quartz

Using CGContextBeginPath and related APIs

A simple demo of Transparency Layers

CGRotation is a Cocoa application that demonstrates how to use the Current Transformation Matrix (CTM) to apply rotation, scaling and transformation to an image for display. It also demonstrates simple usage of ImageIO to load and save images and how to get the pixel data from a CGImageRef into an arbitrary buffer.

This is port to python of the "Cocoa CG shading demo" on ADC.

This is currently not a good example of how to program in Python, but does show that the CGShading API's work from Python.

This sample code introduces some of the concepts and features of Quartz. It contains code that:

• fills then strokes a rectangle and strokes then fills a rectangle
• creates a CGPath object and then paints that path with varying degrees of alpha transparency
• draws the contents of a TIFF file using Quartz
• draws the contents of a TIFF file using Quartz clipped by an elliptical shape
• caches content using a CGLayer object and then draws using that cache
• exports any of the above drawing to a PDF file
• exports any of the above drawing as a PNG file

This is a translation of the Cocoa version of the ADC example with the same name.

Translation into python of and ADC example of the same name.

Translation into python of and ADC example of the same name.

A simple paint application using Core Image.

Image transitions using Core Image.

This sample demonstrates the ImageKit ImageBrowser in a basic Cocoa application. It uses IB to create a window an ImageBrowser and a zoom slider.

A simple PDF viewer application using the PDFKit framework.

A python version of the BasicDrawing example in the book "Programming with Quartz". This shows how to use most of the core API's in Quartz/CoreGraphics.

A python version of the CocoaDrawingShell example in the book "Programming with Quartz". This shows how to use most of the core API's in Quartz/CoreGraphics in a Cocoa application.

A simple application that displays a barchart using Quartz Composer.