I’m happy to announce the first experimental version of Metacity with support for CSS window borders (“Cowbell”). This work was largely supported by Collabora Ltd.
- download the tarball;
- read the documentation (it’s not as boring as you might imagine);
- review the source history.
This diagram should explain everything, perhaps.
I would especially like to hear from:
- theme artists, to let me know whether it’s adequately powerful;
- anyone else interested in hacking on this with me;
- the GTK client-side decoration people, so that we can harmonise the way we represent things;
- people who know a lot about CSS and can offer insights into the suitability of the way we represent things;
- people who know a lot about the Dublin Core and can offer insights into whether our metadata system uses it appropriately;
- maintainers of other window managers (especially Mutter), so we can talk about including CSS support in other window managers;
- everyone else, to suggest which of the directions for future development are most interesting.
I think it may perhaps be helpful to set up a Cowbell mailing list, so that we can compare notes on implementations. For example, I haven’t written down anywhere how to place an image to the right of the title, which is commonly needed (you use border-image).
Photo © Craft*ology, cc-by-nc.
10 thoughts on “CSS on window borders experimental layout language”
To compile on OpenSUSE 11.1:-
# Repo for libccss
sudo zypper ar http://download.opensuse.org/repositories/Moblin://Factory/openSUSE_11.1/Moblin:Factory.repo
# Install required devel packages
sudo zypper in gtk2-devel gconf2-devel ccss ccss-devel libcanberra-devel librsvg-devel libsoup-devel gnome-doc-utils-devel startup-notification-devel
./configure –prefix=/usr && make && sudo make install
The docs (section 2.2) says:- “Copy the contents of the src/themes/Sunshine directory to ~/.themes/Sunshine/cowbell/”
However, this seems to be missing from the tarball.
Thanks for your work!
Hmm, I do feel rather stupid for having missed that out of the tarball somehow; I’ve made it available as a separate download.
I’ll post about it separately.
I wanted to comment on the Cowbell docs, but the results are a little too large for this little blog comment so I’ve put them online here:
Basically, as one who has done a little theming and a little CSS, I went through the docs section by section and noted down anything I found surprising or awkward-looking.
Hope this helps!
In response to Screwtape:-
I would clamp the maximum button-height to the height of the title bar. This would allow for vista-style buttons which are top-aligned but do not extend to the bottom of the title bar.
With the current theme format, if you want some particular effect like top-aligned buttons, since you can’t change the height of buttons you just leave them at full-height and only draw the ‘button’ shape on the top half.
Also, now that I think of it, perhaps having 1em be the width that makes square buttons is *not* the best idea – the height of the title area will be the height of the title text plus any line-height and padding on the title-text, so setting the button-width to 1em would likely make for slightly portrait-shaped buttons.
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