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XBM File Format
| Short Name |
XBM |
| Long Name |
X Window Bitmap |
| Typical File Extensions |
.h |
| Contains |
Monochrome Bitmap/Icon/Cursor |
This is a format that is used to store monochrome
icons
and cursors
in the X Window system (a GUI
system that is particularly popular on UNIX and Linux
computers).
The format is
not compressed (it in fact, it is extremely verbose), and is unusual in
that as well as being a graphics file format, it
is also valid C programming source code.
In typical uses, the verbosity is not a major
disadvantage, in that this format is normally used
to store only very small images.
One interesting aspect of the XBM format is that images in
this format can be generated on the fly using browser-based JavaScript
(as far as I'm aware, it is the only image format that can be
generated in this way - as other formats such
as
GIF,
PNG
and JPEG
can only be created using server-side scripts such as
ASP,
CGI or
PHP scripts).
An example of generating XBM images using JavaScript
can be found in chapter 14 of
JavaScript: The Definitive Guide.
For color images, a similar format to XBM, namely XPM,
has devised.
A technical discussion of this format can be found in Chapter 15 of Graphics File Formats† by David C. Kay and John R. Levine.
Related Pages on this site:
Related Books:
- Compressed Image File Formats: JPEG, PNG, GIF, XBM, BMP
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By John Miano
Addison-Wesley Professional
Paperback (288 pages)
Product Description:
This comprehensive reference on the major graphics file formats and the compression technologies they employ is an indispensable resource for graphics programmers, especially those developing graphical applications for the Web. Compressed Image File Formats: JPEG, PNG, GIF, XBM, BMP examines the most common graphics file formats in detail and demonstrates how to encode and decode image files for each. In particular, this book offers in-depth coverage of the elaborate JPEG and newer PNG formats, providing clear explanations of complex concepts, experience-based practical techniques, and plentiful code examples. GIF, XBM, and BMP are also covered, with a focus on some of the less familiar and less well-documented features of these common file formats. Specific topics covered include: *Compression technologies that each file format utilizes *Color models employed by each file format *The advantages and disadvantages of each file format *Huffman Coding *LZW Compression *Deflate/Inflate *Progressive JPEG *The Discrete Cosine Transform *Animated GIF The accompanying CD-ROM contains the complete source code for all of the image formats covered in the book, as well as working examples and sample images. If you want to learn how to read and write graphic file formats for the Web--including PNG and JPEG files--there is no better resource than this book. System requirements: Windows 95 or Windows NT, Borland C++ Builder 3, or Microsoft Visual C++ 5.0. 0201604434B04062001
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- Graphics File Formats
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| |
By David C. Kay
Windcrest
Paperback (496 pages)
Product Description:
This text features detailed specifications for 30 popular graphics file formats so that readers can more quickly and easily decide which standards are best for their applications. New to this edition are chapters on formats important to multimedia and video, including MPEG, FL1 and QuickTime; expanded discussion of data compression; and coverage of format updates, such as TIFF 6.0. Readers can also get updated information on: JPEG; GEM bit image; Windows BMP; PostScript; HP PCL; CGM; GIF; Targa; MacPaint; PICT; Windows Metafile; and Lotus PIC. This book should be of interest to software developers, systems managers and computer hobbyists.
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- Internet File Formats: Your Complete Resource for Sending, Receiving, and Using Internet Files
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By Tim Kientzle
Coriolis Group
Paperback (416 pages)
Product Description:
Provides a detailed file format dictionary to help you understand most of the major file formats found on the Internet. Comes with a CD-ROM jam-packed with programs and tools to help you work with the files you come across on the Internet. Includes player programs to use files you download from the Internet. Contains compression and decompression utilities, and utilities to help you convert files from one format to another. Offers the tools to help you create HTML files and publish on the Web, and efficiently transfer your files. Helps you to read, write, convert, and use most of the major file types encountered on the Internet.
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- JavaScript: The Definitive Guide
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By David Flanagan
O'Reilly Media
Paperback (900 pages)
Product Description:
JavaScript is a powerful, object-based scripting language; JavaScript programs can be embedded directly in HTML web pages. When combined with the Document Object Model (DOM) defined by a web browser, JavaScript allows you to create Dynamic HTML content and interactive client-side web applications. JavaScript syntax is based on the popular programming languages C, C++, and Java, which makes it familiar and easy to learn for experienced programmers. At the same time, JavaScript is an interpreted scripting language, providing a flexible, forgiving programming environment in which new programmers can learn. JavaScript: The Definitive Guide provides a thorough description of the core JavaScript language and both the legacy and standard DOMs implemented in web browsers. The book includes sophisticated examples that show you how to handle common tasks, like validating form data, working with cookies, and creating portable DHTML animations. The book also contains detailed reference sections that cover the core JavaScript API, the legacy client-side API, and the W3C standard DOM API, documenting every JavaScript object, method, property, constructor, constant, function, and event handler in those APIs. This fourth edition of the bestselling JavaScript book has been carefully updated to cover JavaScript 1.5 (ECMAScript version 3). The book also provides complete coverage of the W3C DOM standard (Level 1 and Level 2), while retaining material on the legacy Level 0 DOM for backward compatibility. JavaScript: The Definitive Guide is a complete programmer's guide and reference manual for JavaScript. It is particularly useful for developers working with the latest standards-compliant web browsers, like Internet Explorer 6, Netscape 6, and Mozilla. HTML authors can learn how to use JavaScript to build dynamic web pages. Experienced programmers can quickly find the information they need to start writing sophisticated JavaScript programs. This book is an indispensable reference for all JavaScript programmers, regardless of experience level.
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