Programming with Quartz

Programming with Quartz

2D and PDF Graphics in Mac OS X

1st Edition - December 14, 2005

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  • Authors: Philip Schneider, David Gelphman, Bunny Laden
  • eBook ISBN: 9780080459639

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Description

Written by members of the development team at Apple, Programming with Quartz is the first book to describe the sophisticated graphics system of Mac OS X. By using the methods described in this book, developers will be able to fully exploit the state-of-the-art graphics capabilities of Mac OS X in their applications, whether for Cocoa or Carbon development. This book also serves as an introduction to 2D graphics concepts, including how images are drawn and how color is rendered. It includes guidance for working with PDF documents, drawing bitmap graphics, using Quartz built-in color management, and drawing text. Programming with Quartz is a rich resource for new and experienced Mac OS X developers, Cocoa and Carbon programmers, UNIX developers who are migrating to Mac OS X, and anyone interested in powerful 2D graphics systems.

Key Features

  • This is the definitive guide to the revolutionary graphics system of Mac OS X that uses the Portable Document Format (PDF) as the basis of its imaging model
  • It contains the latest on programming with Quartz for Mac OS X version 10.4
  • Carefully crafted and extensive code examples show how to accomplish most of the drawing tasks possible with Quartz

Readership

Cocoa and Carbon programmers who want to understand and fully exploit the power of the graphics system in Mac OS X and those who are looking to add new drawing capabilities, add support for PDF documents, or improve the quality of the graphics in their applications.
UNIX developers interested in the graphics capabilities of Mac OS X.
Web developers who want to create dynamic content using Quartz.

Table of Contents

  • Foreword by Philip Schneider

    Preface
    Our Objective
    Outline
    Source Code
    Header Files
    Conventions and Assumptions
    Quartz Technologies
    Acknowledgements

    Chapter 1 Introducing Quartz 2D
    A Bit of History
    Quartz 2D Overview
    What Software Can Use Quartz 2D?
    Summary
    See Also

    Chapter 2 Quartz 2D Drawing Basics
    Quartz Graphics Contexts
    Filling a Rectangle
    Stroking a Rectangle
    The Order of Fill and Stroke Operations
    Transforming the Coordinate System
    Constructing Quartz Paths
    Painting with Alpha
    Making Dashed Lines
    Clipping a Drawing
    Drawing PDF Content
    More About Graphics Contexts
    Summary
    See Also

    Chapter 3 Using Quartz 2D in Cocoa
    Xcode Overview
    Creating a Cocoa Xcode Project in Tiger
    Creating a View in Interface Builder
    Connecting the Interface to the Code
    Obtaining a Graphics Context in Cocoa
    Writing the Drawing Code
    Examining the Drawing Output
    Cocoa Framework Drawing and Quartz
    Summary
    See Also

    Chapter 4 Using Quartz 2D in Carbon
    Creating a Carbon Xcode Project
    Setting Up a Carbon Window
    Creating an Event Handler
    Examining the Drawing Output
    Using QDBeginCGContext
    Summary
    See Also

    Chapter 5 The Quartz Coordinate System and Coordinate Transformations
    User Space and Device Space
    Coordinate Transformations
    The Current Transformation Matrix
    The Mathematics of Affine Transforms
    Saving and Restoring a Coordinate System
    Affine Transform Convenience Functions
    Summary
    See Also

    Chapter 6 Drawing with Paths
    Properties of Paths
    • Path Construction Primitives
    • Cubic Bézier Curves
    • Quadratic Bézier Curves
    Closing Subpaths
    Path Construction Convenience Functions
    • Additional Path Convenience Functions (Tiger)
    Stroking Paths
    • Line Width
    • Line Joins
    • Line Caps
    • Line Dash
    Filling Paths
    Clipping With Paths
    CGPath Objects (Jaguar and later only)
    Anti-aliasing
    Path Utility Functions
    • Aligning User Space Coordinates on Pixel Boundaries
    Summary
    See Also

    Chapter 7 Color, Alpha Transparency, and the Quartz Graphics State
    Color and Color Spaces
    • A General Approach to Setting Color
    • Calibrated Color Spaces
    • Device Color Spaces
    • Special Color Spaces
    • Creating Color Spaces by Name
    • Rendering Intents
    Alpha Transparency
    • Blend Modes (Tiger)
    CGColorRef Objects (Panther and later)
    Graphics State Parameters
    Summary
    See Also

    Chapter 8 Data Providers and Data Consumers
    Data Providers
    • CGDataProviderCreateWithURL
    • CGDataProviderCreateWithData
    • CGDataProviderCreate
    • CGDataProviderCreateDirectAccess
    • CGDataProviderCreateWithCFData (Tiger and later)
    Guidelines for Using Data Providers
    Data Consumers
    Summary

    Chapter 9 Drawing Images
    Creating CGImage Objects
    • Specialized Functions for JPEG and PNG
    • Drawing Images into a Flipped Coordinate System
    • A General Function for Uncompressed Data
    • Generalized Functions for Compressed Image Data (Tiger and later)
    • Importing Image Data With QuickTime
    • Guidelines for Image Creation
    Best Practices for Working With Images
    Image Utility Functions
    • Getting Image Dimensions
    • Getting the Pixel Format
    • Creating an Image from a Bitmap Context
    • Working With Color Spaces
    • Creating Subimages
    Writing Image Data using CGImageDestination (Tiger)
    Exporting to JPEG Using a QuickTime Exporter
    Summary
    See Also

    Chapter 10 Image Masking
    Creating an Image Mask
    • Drawing and Inverting a 1-Bit Image Mask
    • Drawing an 8-Bit Deep Mask
    Masking an Image (Tiger)
    • Masking an Image with an Image Mask
    • Masking an Image with an Image
    • Masking Guidelines
    Using Color as a Mask (Tiger)
    Clipping to a Mask (Tiger)
    Summary
    See Also

    Chapter 11 Text
    Text Drawing Parameters
    • Font and Font Size
    • Text Matrix and Text Position
    • Text Drawing Modes
    • Font Smoothing (Jaguar)
    • Character Spacing
    Drawing Text Using Quartz
    • Drawing with Characters
    • Drawing with Glyphs
    Drawing Text Using Cocoa
    • Using NSString
    • Using NSLayoutManager
    • Subclassing to Get Additional Control
    Drawing Text Using Carbon
    • Using HIThemeDrawTextBox (Panther)
    • Using Multilingual Text Engine
    • Using Apple Type Services for Unicode Imaging
    Drawing Text in a Flipped Coordinate System
    Summary
    See Also

    Chapter 12 Creating Bits
    Bitmap Graphics Context
    • Supported Pixel Formats
    • Creating a Bitmap Graphics Context
    • Getting Information About a Bitmap Context
    • Using the Bitmap Data from a Bitmap Context
    CGLayers (Tiger)
    • Creating a CGLayer Object
    • Drawing to a CGLayer
    • Drawing the Contents of a CGLayer
    • Using a CGLayer to Draw a Checkerboard
    Caching Drawing Offscreen
    • Drawing Repeatedly Without Caching
    • Drawing Repeatedly With Bitmap Context Caching
    • Drawing Repeatedly With CGLayer Caching
    • Display Profile Issues
    Replacing CopyBits
    Summary
    See Also

    Chapter 13 Opening and Drawing PDF Documents
    PDF Document Properties
    Opening a PDF Document
    Using PDF as a Graphical Interchange
    • Creating PDF Data From the Pasteboard: Cocoa
    • Creating PDF from the Pasteboard: Carbon
    Drawing PDF Pages
    • Drawing With CGContextDrawPDFDocument
    • Drawing PDF Documents in a Flipped Coordinate System
    • Using CGPDFPage Objects (Panther)
    • Drawing with PDF Rotation on Jaguar and Earlier
    Handling Protected PDF Documents (Jaguar)
    PDF Document Utility Functions
    Summary
    See Also

    Chapter 14 Creating and Examining PDF Documents
    Creating New PDF Documents
    • Using CGPDFContextCreateWithURL
    • Using the Auxiliary Information Dictionary
    Copying PDF Content to the Pasteboard
    Adding Content to Existing PDF Documents
    Adding Links to PDF Documents (Tiger)
    • Creating a Link to a URL
    • Creating a Link to Another Page in the Document
    Creating Encrypted PDF Output (Tiger)
    PDF Document Generation Issues
    Examining PDF Document Content (Panther, Tiger)
    • Quartz PDF Introspection
    • Scanning the PDF Content Stream (Tiger)
    Summary
    See Also

    Chapter 15 Advanced Drawing Features
    Drawing with Patterns
    • Creating Patterns
    • Creating and Drawing Colored Patterns
    • Base Space, the Pattern Matrix, and Transforming Patterns
    • Pattern Phase
    • Creating and Drawing Stencil Patterns
    • Drawing Complex Patterns
    • Pattern Issues
    Drawing with Shadows (Panther)
    • Shadow Attributes
    • Creating and Drawing With Shadows
    • Shadow Offset and Quartz Base Space
    • Shadows and Grouped Objects
    • Shadows and PDF Documents
    Drawing with Transparency Layers (Panther)
    • Using Transparency Layers
    • Alpha Compositing and Transparency Layers
    • Transparency Layers and PDF Documents
    • Transparency Layers Compared to CGLayers
    Drawing With Shadings (Jaguar)
    • Shading Concepts and the CGFunction
    • Axial Shadings
    • Radial Shadings
    • Radial Shading Geometries
    • Transforming Shadings
    Summary
    See Also

    Chapter 16 Supporting PostScript and EPS Data
    Overview of the Conversion Process
    Quartz Conversion Functions and Callbacks (Panther)
    Creating a PDF Data File From PostScript Data
    Using Converted PostScript Data in Your Application
    PSConverter Advanced Issues
    Printing Source EPS Data
    Guidelines for Supporting EPS Data in Your Application
    Summary
    See Also

    Chapter 17 Performance and Debugging
    Optimizing Performance
    • The Quartz Compositor
    • Quartz Object and Memory Model
    • Improving Performance
    • Measuring Performance
    Debugging Your Drawing
    • Examining the Coordinate System
    • Checking the Clipping Area
    • Drawing a Debugging Rectangle
    • Looking for Console Messages
    • Checking for Data Provider Integrity
    • Checking for Immutability Violations
    • Checking for Improperly Initialized Contexts
    • Checking for Out-of-Sync Color Setting
    • Drawing Images to a PDF Context
    • Releasing a CGPDFContext Object
    • Checking Pattern Color Space Usage
    • Using PDF Generation as a Debugging Aid
    Summary
    See Also

    Chapter 18 Creating Quartz Tools and Python Scripts
    Python Scripting with Quartz (Panther)
    • Getting Started
    Creating Bits with Python
    Using Quartz in UNIX Tools
    • Security Issues
    The PDF Workflow in Printing (Jaguar)
    Summary
    See Also

    Index

Product details

  • No. of pages: 704
  • Language: English
  • Copyright: © Morgan Kaufmann 2005
  • Published: December 14, 2005
  • Imprint: Morgan Kaufmann
  • eBook ISBN: 9780080459639

About the Authors

Philip Schneider

24 years of professional programming, primarily focused on modeling tools and geometric algorithms. Employers include Digital Equipment Corporation, Apple, Walt Disney Feature Animation, Digital Domain, and Industrial Light + Magic. Formed and lead groups specializing in these areas as well as in physics simulation.

Film Credits: Oil & Vinegar, 102 Dalmatians, Disney's Magic Lamp, Mickey's Philharmagic, Reign of Fire, Kangaroo Jack, Chicken Little, Indiana Jones and the Kingdom of the Crystal Skull, Pirates of the Caribbean: Dead Man's Chest, Harry Potter and the Goblet of Fire.

ACM Siggraph, IEEE.

M.S. in Computer Science, University of Washington.

Affiliations and Expertise

Employers include Digital Equipment Corporation, Apple, Walt Disney Feature Animation, Digital Domain, and Industrial Light + Magic

David Gelphman

David Gelphman is a senior software engineer on Apple's Graphics and Imaging team. He has over 20 years of experience working with the PostScript and PDF imaging model that is at the heart of Quartz graphics. His computer career began with scientific computing while he was earning his PhD in experimental particle physics at Stanford. Apple's introduction of the Macintosh in 1984 caused him to make a sharp turn into the world of user-friendly computing and he hasn't looked back.
While working at Adobe Systems, David co-designed Apple's LaserWriter 8 printer driver and was team lead of the development project. At Adobe he also worked closely with third party developers, taught PostScript programming, wrote a number of technical notes, and contributed to the evolution of the PostScript language. After leaving Adobe he continued to combine software engineering work with documentation for software developers, authoring an article for Apple's develop technical journal in addition to a number of Apple technical notes. Today David writes system software for Mac OS X but continues to be involved with third party documentation and enjoys writing sample code for developers outside of Apple.

Affiliations and Expertise

Apple, Cupertino, California, U.S.A.

Bunny Laden

Bunny Laden is a senior technical writer for Apple Computer who writes documentation for Mac OS X technologies, including Quartz, Core Image, and Quartz Composer. She has won technical writing awards for a number of Apple documents— QuickTime VR Authoring Studio, Handling Unicode Text With MLTE, Supporting Printing in Your Application—and for the book Learning Carbon (O'Reilly & Associates). In her former life as an academician, she authored articles on a number of topics including music cognition and musical acoustics.

Affiliations and Expertise

Apple, Cupertino, California, U.S.A.

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