Emit all errors via the parser, don't try to have a custom error
handling machinery.
The only exception is the initial file load error - we need to do that
one directly, because there is no parser.
This commit is still way too big, but I couldn't make it smaller.
It transitions the old CSS parser to the new parser. CSS parsing is now
tokenized, everything else is probably still buggy.
This is ithe first step towards converting the parsing code to use
tokens. For now, the topken type is just a magic enum value that only
works as-needed.
This library is meant to be the new CSS library that gets used from GDK,
GSK and GTK for string printing and parsing.
As a first step, move GtkCssProviderError into it.
While doing so, split it into GtkCssParserError (for critical problems)
and GtkCssParserWarning (for non-critical problems).
Remove all the old 2.x and 3.x version annotations.
GTK+ 4 is a new start, and from the perspective of a
GTK+ 4 developer all these APIs have been around since
the beginning.
commit 475d916eb9 added various paths that
use theme-name for this, but the existing path already used THEME, with
a subsequent description referring to the latter. So use that everywhere
This is just lots of renaming.
The interface remains private, so the public API does not change, apart
from removing the definition of the Interface object to avoid
subclassing.
When loading a per-theme settings.ini file, look for it in
the same directory where we found the gtk.css file for the
theme. Previously, we were always looking in
$prefix/share/themes/THEME/gtk-3.0/, even if the css was
loaded from somewhere else.
https://bugzilla.gnome.org/show_bug.cgi?id=641354
With this change, we now look in
$XDG_DATA_HOME/themes/THEME/gtk-3.x
$HOME/.themes/THEME/gtk-3.x
$XDG_DATA_DIRS/themes/THEME/gtk-3.x
GTK_DATA_PREFIX/themes/THEME/gtk-3.x
https://bugzilla.gnome.org/show_bug.cgi?id=641354
Instead of
/org/gtk/libgtk/theme/$THEME-$VARIANT.css
look at
/org/gtk/libgtk/theme/$THEME/gtk-$VARIANT.css
and that way mirror the directory layout of real themes.
Currently, GtkCssProvider can emit ::parsing-error only during
the actual parsing, although the documentation hints that it might
happen at other times.
This commit adds a emit_error method to the GtkStyleProviderPrivate
interface that will let us emit errors from the compute() implementations
as well, which can be useful (e.g. if an image fails to load).
Split the CSS docs off from the GtkCssProvider docs and
give them their own chapter. Among other things, this commit
introduces more or less complete definitions of the syntax for
the supported selectors, a complete list of all supported
properties, and definitions for their values. This includes
documentation for GTK+-specific properties such as -gtk-icon-source.
