X Window System User's Guide, Vol 3 (The Definitive Guides to the X Window System)

7

Graphics Utilities

This chapter describes how to use the major graphics clients included with X, notably the bitmap editor.

In This Chapter:

Creating Icons and Other Bitmaps

Bitmap Editing Commands

Pointer Commands

Bitmap Command Boxes

Acting on the Entire Grid: Clear All, Set All, Invert All

Acting on an Area: Clear Area, Set Area, Invert Area

Copy Area, Move Area, Overlay Area

Drawing: Line, Circle, Filled Circle

Filling in a Shape: Flood Fill

Hot Spots: Set Hot Spot, Clear Hot Spot

Saving and Quitting: Write Output, Quit

Dialog Boxes and Command Buttons

Creating a Bitmap from a Cursor

Magnifying Portions of the Screen: xmag

Quitting xmag

What xmag Shows You

Dynamically Choosing a Different Source Area

The Portable Bitmap Toolkit

7

Graphics Utilities

The standard release of X includes four utilities to help you create bitmap images: bitmap, bmtoa, atobm, and xmag. The most powerful and useful of these clients is bitmap, a program that lets you create and edit bitmap files. This section includes detailed instructions for using the bitmap client.

The bmtoa and atobm clients are programs that convert bitmaps to arrays (of ASCII characters) and arrays to bitmaps. They are used to facilitate printing and file manipulation and can help you convert a font character to a bitmap, as we'll demonstrate.

In a sense, the xmag client is a desk accessory for graphics programs. This client is used to magnify a portion of the screen, to assist you in creating images with a graphics editor, ...