Chapter 3 - Standard Image-Compression Dialog Components
This chapter discusses standard image-compression dialog components. Standard image-compression dialog components provide a consistent user interface for selecting parameters that govern the compression of an image or image sequence and the management of the compression operation. Applications that use these components are freed from many of the details of obtaining and validating image-compression parameters and interacting with the Image Compression Manager to compress an image or sequence.This chapter is divided into the following sections:
If you want to use a standard image-compression dialog component in your application, you should read the first two sections of this chapter, and then use the reference section as appropriate. If you want to create your own standard image-compression dialog component, you should be familiar with all of the information in this chapter.
- "About Standard Image-Compression Dialog Components" provides a general introduction to components of this type.
- "Using Standard Image-Compression Dialog Components" discusses the facilities provided to applications by these components.
- "Creating a Standard Image-Compression Dialog Component" describes how to create one of these components.
- "Standard Image-Compression Dialog Components Reference" presents detailed information about the functions that are supported by these components.
- "Summary of Standard Image-Compression Dialog Components" contains a condensed listing of the constants, data structures, and functions supported by these components in C and in Pascal.
As components, standard image-compression dialog components rely on the facilities
of the Component Manager. In order to use any component, your application must also use the Component Manager. If you are not familiar with this manager, see the chapter "Component Manager" in Inside Macintosh: More Macintosh Toolbox. In addition, you should be familiar with image compression in general and the Image Compression Manager in particular. See the chapter "Image Compression Manager" in Inside Macintosh: QuickTime for more information.
- Note
- Throughout this chapter, the term standard dialog component refers to the standard image-compression dialog component. The term standard dialog box refers to one or both of the two dialog boxes presented by the standard image-compression dialog component. These dialog boxes are shown in Figure 3-1 and Figure 3-2.
Chapter Contents
- About Standard Image-Compression Dialog Components
- Using Standard Image-Compression Dialog Components
- Opening a Connection to a Standard Image-Compression Dialog Component
- Displaying the Dialog Box to the User
- Setting Default Parameters
- Designating a Test Image
- Displaying the Dialog Box and Retrieving Parameters
- Extending the Basic Dialog Box
- Creating a Standard Image-Compression Dialog Component
- Standard Image-Compression Dialog Components Reference
- Request Types
- The Spatial Settings Request Type
- The Temporal Settings Request Type
- The Data-Rate Settings Request Type
- The Color Table Settings Request Type
- The Progress Function Request Type
- The Extended Functions Request Type
- The Preference Flags Request Type
- The Settings State Request Type
- The Sequence ID Request Type
- The Window Position Request Type
- The Control Flags Request Type
- Standard Image-Compression Dialog Component Functions
- Getting Default Settings for an Image or a Sequence
- Displaying the Standard Image-Compression Dialog Box
- Compressing Still Images
- Compressing Image Sequences
- Working With Image or Sequence Settings
- Specifying a Test Image
- Positioning Dialog Boxes and Rectangles
- Utility Function
- Application-Defined Function
- Summary of Standard Image-Compression Dialog Components
- C Summary
- Constants
- Data Types
- Standard Image-Compression Dialog Component Functions
- Getting Default Settings for an Image or a Sequence
- Displaying the Standard Image-Compression Dialog Box
- Compressing Still Images
- Compressing Image Sequences
- Working With Image or Sequence Settings
- Specifying a Test Image
- Positioning Dialog Boxes and Rectangles
- Utility Function
- Application-Defined Function
- Pascal Summary
- Constants
- Data Types
- Standard Image-Compression Dialog Component Routines
- Getting Default Settings for an Image or a Sequence
- Displaying the Standard Image-Compression Dialog Box
- Compressing Still Images
- Compressing Image Sequences
- Working With Image or Sequence Settings
- Specifying a Test Image
- Positioning Dialog Boxes and Rectangles
- Utility Function
- Application-Defined Routine
- Result Codes
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