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User who did this - Andrei Thorp (garoth)
Attached to Project - awesome
Summary - Image/Drawing System Overhaul With Cairo Bias
Task Type - Evolution Request
Category - Core
Status - Unconfirmed
Assigned To -
Operating System - All
Severity - Medium
Priority - Normal
Reported Version - git/master
Due in Version - Undecided
Due Date - Undecided
Details - In general, I consider the Awesome drawing system to be fairly
mediocre. Some complaints:
We use both imlib2 and cairo. Talking to psychon, this doesn't seem
particularly useful. It was explained to me that imlib is used for loading
files from disk and some drawing, whereas Cairo is used for displaying and some
drawing. However:
- imlib *sucks* at drawing. The current features provided in image.c consist of
lines, rectangles, circles, pixels, and basic rectangle fills/gradients.
However, Cairo provides features like drawing complex shapes using beziers.
These shapes are then intelligently understood as a collection of nodes like an
SVG and can be filled and transformed. At the moment, the imlib features that
we provide for drawing on images make it possible to (pretty much only) create
the widgets that currently exist: basic lines and rectangles. Creating anything
more complex is virtually impossible.
- cairo can load pngs.
http://cairographics.org/manual/cairo-png-functions.html#cairo-image-surface-create-from-png
. This feature should be researched a bit more. Regardless, I've checked
through the source, and every image file that we provide is already a PNG, and
I expect that 95% of all images used for awesome are pngs or svgs. (Cairo can
load SVGs also -- SVGs are frequently used for various icons on the system.)
So, in the interest of pushing awesome widgets forward again, I propose:
- drop imlib as a dependency. It, I think, is superseded by Cairo.
- provide direct cairo surface access for drawing on images so that more
complexly shaped widgets (clickable stars, volume waves drawn directly as
widgets, various wavy progress bars, etc) are possible.
More information can be found at the following URL:
http://awesome.naquadah.org/bugs/index.php?do=details&task_id=757
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