It's nice to indicate when a title is truncated with an ellipsis.
Because themes may draw a title multiple times to draw a shadow, or
may include the window icon within the title area, we can't determine
the proper ellipsization width automatically, so add an optional
attribute to the <title/> element "ellipsize_width" which, if set,
is the width to ellipsize at.
This is only enabled if a theme version of 3.1 is required.
When it's not set, we keep the old behavior of just letting the
title be clipped with a hard edge.
https://bugzilla.gnome.org/show_bug.cgi?id=591842
Sometimes you want to position something (usually the title) to be centered
with respect to the entire frame instead of centered with respect to the
individual piece currently being drawn.
This patch adds frame_x_center and frame_y_center variables that represent
the X/Y centers of the frame in the coordinate system of the piece being
drawn.
The theme version is bumped from 3.0 to 3.1 (3.0 is just the new version
system, 3.1 will have all the features we add for Mutter-2.28.)
position expressions
https://bugzilla.gnome.org/show_bug.cgi?id=591842
The current mechanism of metacity-theme-1.xml and metacity-theme-2.xml
is not flexible for allowing small-scale additions. With this patch
we bump the major version version once more to metacity-theme-3.xml
and add a single feature:
Any element in the DTD can have an attribute:
version="[<|<=|=>|>] MAJOR.MINOR"
And it will be ignored unless the predicate is met. (< and > should
be to be entity escaped as < and >)
This allows having alternate sections of the theme file for older and
newer version.
* Required GLib version is bumped to 2.14 so we can parse versions
with a regular expression.
* We switch internal version numbers to be "1000 * major + minor"
* We keep a stack of the maximum required version for the current portion
the XML tree so that the "cannot use versions you don't require" stricture
of the old code can be made local to a subpart of the tree.
* A version on the top metacity_theme element causes the entire file to
be ignored; this allows having one metacity-theme-3.xml for version 3.2
and newer (say) and a metacity-1.xml for everything old.
Actual new features will be added starting with 3.1 - 3.0 is just the
version="" feature.
http://bugzilla.gnome.org/show_bug.cgi?id=592503
