Working with Images
In viewing and manipulating images, GDI+ provides significant improvements over its predecessor, GDI. In this chapter we will discuss the following topics:
- Basic imaging-related classes defined in the .NET Framework library
- The difference between raster and vector images
- The Image class, its properties, and its methods
- Writing an image viewer application
- Opening and viewing images
- Retrieving image properties
- Creating thumbnails
- Rotating and flipping images
- Zooming in and out on images
- Saving and skewing images
- Changing the resolution and scaling of images
- Playing animated images
- The Bitmap class, its properties, and its methods
- Using the Icon class to work with icons
- Drawing transparent images
- Using the PictureBox control to draw images
As we said earlier, the graphics-related functionality in the .NET Framework class library is defined in the System.Drawing namespace and its helper namespaces. The imaging functionality is divided into two categories by separation into two namespaces. Basic imaging functionality is defined in the System.Drawing namespace; advanced imaging functionality is defined in the System.Drawing.Imaging namespace. This chapter covers the former; Chapter 8 will focus on the latter.
GDI+: The Next-Generation Graphics Interface
- GDI+: The Next-Generation Graphics Interface
- Understanding GDI+
- Exploring GDI+ Functionality
- GDI+ from a GDI Perspective
- GDI+ Namespaces and Classes in .NET
- Summary
Your First GDI+ Application
- Your First GDI+ Application
- Drawing Surfaces
- The Coordinate System
- Tutorial: Your First GDI+ Application
- Some Basic GDI+ Objects
The Graphics Class
- The Graphics Class
- Graphics Class Properties
- Graphics Class Methods
- The GDI+Painter Application
- Drawing a Pie Chart
Working with Brushes and Pens
- Working with Brushes and Pens
- Understanding and Using Brushes
- Using Pens in GDI+
- Transformation with Pens
- Transformation with Brushes
- System Pens and System Brushes
- A Real-World Example: Adding Colors, Pens, and Brushes to the GDI+Painter Application
Colors, Fonts, and Text
- Colors, Fonts, and Text
- Accessing the Graphics Object
- Working with Colors
- Working with Fonts
- Working with Text and Strings
- Rendering Text with Quality and Performance
- Advanced Typography
- A Simple Text Editor
- Transforming Text
Rectangles and Regions
- Rectangles and Regions
- The Rectangle Structure
- The Region Class
- Regions and Clipping
- Clipping Regions Example
- Regions, Nonrectangular Forms, and Controls
Working with Images
- Working with Images
- Raster and Vector Images
- Working with Images
- Manipulating Images
- Playing Animations in GDI+
- Working with Bitmaps
- Working with Icons
- Skewing Images
- Drawing Transparent Graphics Objects
- Viewing Multiple Images
- Using a Picture Box to View Images
- Saving Images with Different Sizes
Advanced Imaging
- Advanced Imaging
- Rendering Partial Bitmaps
- Working with Metafiles
- Color Mapping Using Color Objects
- Image Attributes and the ImageAttributes Class
- Encoder Parameters and Image Formats
Advanced 2D Graphics
- Advanced 2D Graphics
- Line Caps and Line Styles
- Understanding and Using Graphics Paths
- Graphics Containers
- Reading Metadata of Images
- Blending Explained
- Alpha Blending
- Miscellaneous Advanced 2D Topics
Transformation
- Transformation
- Coordinate Systems
- Transformation Types
- The Matrix Class and Transformation
- The Graphics Class and Transformation
- Global, Local, and Composite Transformations
- Image Transformation
- Color Transformation and the Color Matrix
- Matrix Operations in Image Processing
- Text Transformation
- The Significance of Transformation Order
Printing
- Printing
- A Brief History of Printing with Microsoft Windows
- Overview of the Printing Process
- Your First Printing Application
- Printer Settings
- The PrintDocument and Print Events
- Printing Text
- Printing Graphics
- Print Dialogs
- Customizing Page Settings
- Printing Multiple Pages
- Marginal Printing: A Caution
- Getting into the Details: Custom Controlling and the Print Controller
Developing GDI+ Web Applications
- Developing GDI+ Web Applications
- Creating Your First ASP.NET Web Application
- Your First Graphics Web Application
- Drawing Simple Graphics
- Drawing Images on the Web
- Drawing a Line Chart
- Drawing a Pie Chart
GDI+ Best Practices and Performance Techniques
- GDI+ Best Practices and Performance Techniques
- Understanding the Rendering Process
- Double Buffering and Flicker-Free Drawing
- Understanding the SetStyle Method
- The Quality and Performance of Drawing
GDI Interoperability
Miscellaneous GDI+ Examples
- Miscellaneous GDI+ Examples
- Designing Interactive GUI Applications
- Drawing Shaped Forms and Windows Controls
- Adding Copyright Information to a Drawn Image
- Reading and Writing Images to and from a Stream or Database
- Creating Owner-Drawn List Controls
Appendix A. Exception Handling in .NET
