6.6 DUIM-Graphics Module

<pixmap>

Open abstract instantiable class

Summary

The class of pixmap objects.

Superclasses

<image>

Init-keywords

None.

Library

duim-graphics

Module

duim-graphics

Description

The class of pixmap objects.

A pixmap can be thought of as an "off-screen window", that is, a medium that can be used for graphical output, but is not visible on any display device. Pixmaps are provided to allow you to generate a piece of output associated with some display device that can then be rapidly drawn on a real display device. For example, an electrical CAD system might generate a pixmap that corresponds to a complex, frequently used part in a VLSI schematic, and then use copy-from-pixmap to draw the part as needed.

Operations

The following operation is exported from the DUIM-Graphics module.

copy-from-pixmap destroy-pixmap draw-image
draw-pixmap pixmap?

The following operation is exported from the DUIM-DCs module.

image-height image-width