Lesson 08 Documents and Printings in WPF
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The document describes two types of documents: fixed documents and flow documents. Fixed documents have a precise layout that is independent of display hardware. Flow documents dynamically adjust content based on variables and enable features like searching. It also describes different controls for displaying flow documents: FlowDocumentScrollViewer, FlowDocumentPageViewer, and FlowDocumentReader.
Lesson 08 Documents and Printings in WPF
- 3. Fixed documents Require a preciseWYSIWYG presentation Independent of the display/printer hardware used Typical uses for desktop publishing, word processing, and form layout Flow documents Designed to optimize viewing and readability Dynamically adjust and reflow content based on run- time variables built in features including search, viewing modes, and the ability to change the size and appearance of fonts
- 5. Block Description Paragraph Contains (potentially richly formatted) text. List Contains lists of various kinds (numbered, bulleted, and so on). Table Contains tables similar to those in MicrosoftWord or HTML. BlockUIContainer Contains various UI elements that are made part of the overall flow. Section Contains a group of other blocks. Sections are handy for applying common attributes to a group of blocks, such as the same font attributes to multiple paragraphs.
- 6. FlowDocumentScrollViewer: Displays documents in a continuous flow with a scrollbar Similar toWeb pages or the Web Layout in MicrosoftWord FlowDocumentPageViewer Displays Flow Documents in individual pages, with page flipping instead of scrolling. This is similar to the Full Screen Reading mode inWord FlowDocumentReader Combines the scroll viewer and the page viewer and allows the user to switch between the two approaches. Default control used for Flow Documents
- 10. XPS Documents are fixed, read-only documents that created using the XML Paper Standard (XPS) XPS simplifies the process by which digital documents are created, shared, printed, viewed, and archived XPS file describes exactly how the document should look on paper.
- 11. XPS Contain one or more documents Document Consists of one or more pages
- 12. FixedDocumentSequence FixedDocumentSequence class represents the set of documents FixedDocumentSequence is a collection of FixedDocument objects FixedDocument FixedDocument class represents a single document FixedDocument consists of a sequence of pages FixedPage FixedPage class represents for page Built from three element types: Canvas, Glyphs, and Path
Editor's Notes
- #4: WPF divides documents into two broad categories based on their intended use; these document categories are termed "fixed documents" and "flow documents." Fixed documents are intended for applications that require a precise "what you see is what you get" (WYSIWYG) presentation, independent of the display or printer hardware used. Typical uses for fixed documents include desktop publishing, word processing, and form layout, where adherence to the original page design is critical. As part of its layout, a fixed document maintains the precise positional placement of content elements independent of the display or print device in use. For example, a fixed document page viewed on 96 dpi display will appear exactly the same when it is output to a 600 dpi laser printer as when it is output to a 4800 dpi phototypesetter. The page layout remains the same in all cases, while the document quality maximizes to the capabilities of each device. By comparison, flow documents are designed to optimize viewing and readability and are best utilized when ease of reading is the primary document consumption scenario. Rather than being set to one predefined layout, flow documents dynamically adjust and reflow their content based on run-time variables such as window size, device resolution, and optional user preferences. A Web page is a simple example of a flow document where the page content is dynamically formatted to fit the current window. Flow documents optimize the viewing and reading experience for the user, based on the runtime environment. For example, the same flow document will dynamically reformat for optimal readability on either high-resolution 19-inch display or a small 2x3-inch PDA screen. In addition, flow documents have a number of built in features including search, viewing modes that optimize readability, and the ability to change the size and appearance of fonts. See Flow Document Overview for illustrations, examples, and in-depth information on flow documents.
- #12: The basic structure of an XPS file is very simple: a single XPS file contains one or more documents, and each document consists of one or more pages. (In printing terms, you could think of an XPS file as analogous to a print job containing one or more documents.) The System.Windows.Documents namespace represents this structure with three classes. FixedDocumentSequence represents the set of documents in the file. This contains a collection of FixedDocument objects, one for each document. These in turn contain a collection of FixedPage objects, one for each page.