cl-xcb-xlib-demos

Created: 2012-03-22 18:13
Updated: 2018-04-26 22:39

README.md

cl-xcb-xlib-demos

This is a place for demos for cl-xcb-xlib. Try these:

(asdf:load-system :cl-xcb-xlib-demos)
(xcb.clx.demos:run-gears)
(xcb.clx.demos:cairo-run 'cairo-demos:arc1)
(xcb.clx.demos:cairo-run 'cairo-demos:mesh1)

glxgears

The main part of this was ripped off from the demo in PORTABLE-CLX, and converted to work with cl-opengl and the newer GL calls required for direct GLX. You can optionally specify :SCREEN N to make it run on a different head (useful if one has faster GL than the default).

cairo-arc

Updated: Cairo demos are now going to be in cl-cairo2 itself. They can be run with only cl-cairo2 using an image-surface, or using cairo-xcb. The stuff below still applies, but the drawing code is in cl-cairo2.

The first sample adapted from cairographics.org/samples/. While the output isn't particularly interesting, it illustrates a number of things:

  • Making a CLX window and dealing with closing nicely (see MAKE-X-WINDOW and the :client-message case in CAIRO-RUN).

  • Dealing with configuration changes and resizing the cairo surface.

  • Mostly proper handling for cleanup of surfaces, windows, displays, etc*

(*Note: Cleanup could actually be better; creation of the display and window should really be inside its own UNWIND-PROTECT.)

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