forked from AuroraMiddleware/gtk
4551509af1
Some types of applications would benefit from having "dark" themes, usually black backgrounds, such as: * Movie players * Photo management and display applications To make it easy for those applications to prefer a dark theme, we're adding the "gtk-application-prefer-dark-theme" GtkSetting, which will make the theme loading code automatically look for a "gtkrc-dark" file in the same directory you would usually find a gtkrc file. the same name and a "-dark" suffix. If no "-dark" gtkrc variant is available, the normal gtkrc will be used. https://bugzilla.gnome.org/show_bug.cgi?id=617955
1054 lines
32 KiB
Plaintext
1054 lines
32 KiB
Plaintext
<!-- ##### SECTION Title ##### -->
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Resource Files
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<!-- ##### SECTION Short_Description ##### -->
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Routines for handling resource files
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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GTK+ provides resource file mechanism for configuring
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various aspects of the operation of a GTK+ program
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at runtime.
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</para>
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<refsect2><title>Default files</title>
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<para>
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An application can cause GTK+ to parse a specific RC
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file by calling gtk_rc_parse(). In addition to this,
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certain files will be read at the end of gtk_init().
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Unless modified, the files looked for will be
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<filename><SYSCONFDIR>/gtk-2.0/gtkrc</filename>
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and <filename>.gtkrc-3.0</filename> in the users home directory.
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(<filename><SYSCONFDIR></filename> defaults to
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<filename>/usr/local/etc</filename>. It can be changed with the
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<option>--prefix</option> or <option>--sysconfdir</option> options when
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configuring GTK+.)
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</para>
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<para>
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The set of these <firstterm>default</firstterm> files
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can be retrieved with gtk_rc_get_default_files()
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and modified with gtk_rc_add_default_file() and
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gtk_rc_set_default_files().
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Additionally, the <envar>GTK2_RC_FILES</envar> environment variable
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can be set to a #G_SEARCHPATH_SEPARATOR_S-separated list of files
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in order to overwrite the set of default files at runtime.
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</para>
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<para><anchor id="locale-specific-rc"/>
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For each RC file, in addition to the file itself, GTK+ will look for
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a locale-specific file that will be parsed after the main file.
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For instance, if <envar>LANG</envar> is set to <literal>ja_JP.ujis</literal>,
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when loading the default file <filename>~/.gtkrc</filename> then GTK+ looks
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for <filename>~/.gtkrc.ja_JP</filename> and <filename>~/.gtkrc.ja</filename>,
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and parses the first of those that exists.
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</para>
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</refsect2>
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<refsect2><title>Pathnames and patterns</title>
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<anchor id="gtkrc-pathnames-and-patterns"/>
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<para>
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A resource file defines a number of styles and key bindings and
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attaches them to particular widgets. The attachment is done
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by the <literal>widget</literal>, <literal>widget_class</literal>,
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and <literal>class</literal> declarations. As an example
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of such a statement:
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<informalexample><programlisting>
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widget "mywindow.*.GtkEntry" style "my-entry-class"
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</programlisting></informalexample>
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attaches the style <literal>"my-entry-class"</literal> to all
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widgets whose <firstterm>widget path</firstterm> matches the
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<firstterm>pattern</firstterm> <literal>"mywindow.*.GtkEntry"</literal>.
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That is, all #GtkEntry widgets which are part of a #GtkWindow named
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<literal>"mywindow"</literal>.
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</para>
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<para>
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The patterns here are given in the standard shell glob syntax.
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The <literal>"?"</literal> wildcard matches any character, while
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<literal>"*"</literal> matches zero or more of any character.
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The three types of matching are against the widget path, the
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<firstterm>class path</firstterm> and the class hierarchy. Both the
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widget path and the class path consist of a <literal>"."</literal>
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separated list of all the parents of the widget and the widget itself
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from outermost to innermost. The difference is that in the widget path,
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the name assigned by gtk_widget_set_name() is used if present, otherwise
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the class name of the widget, while for the class path, the class name is
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always used.
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</para>
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<para>
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Since GTK+ 2.10,<literal>widget_class</literal> paths can also contain
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<literal><classname></literal> substrings, which are matching
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the class with the given name and any derived classes. For instance,
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<informalexample><programlisting>
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widget_class "*<GtkMenuItem>.GtkLabel" style "my-style"
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</programlisting></informalexample>
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will match #GtkLabel widgets which are contained in any kind of menu item.
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</para>
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<para>
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So, if you have a #GtkEntry named <literal>"myentry"</literal>, inside of a
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horizontal box in a window named <literal>"mywindow"</literal>, then the
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widget path is: <literal>"mywindow.GtkHBox.myentry"</literal>
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while the class path is: <literal>"GtkWindow.GtkHBox.GtkEntry"</literal>.
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</para>
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<para>
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Matching against class is a little different. The pattern match is done
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against all class names in the widgets class hierarchy (not the layout
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hierarchy) in sequence, so the pattern:
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<informalexample><programlisting>
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class "GtkButton" style "my-style"
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</programlisting></informalexample>
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will match not just #GtkButton widgets, but also #GtkToggleButton and
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#GtkCheckButton widgets, since those classes derive from #GtkButton.
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</para>
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<para>
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Additionally, a priority can be specified for each pattern, and styles
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override other styles first by priority, then by pattern type and then
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by order of specification (later overrides earlier). The priorities
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that can be specified are (highest to lowest):
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<simplelist>
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<member><literal>highest</literal></member>
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<member><literal>rc</literal></member>
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<member><literal>theme</literal></member>
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<member><literal>application</literal></member>
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<member><literal>gtk</literal></member>
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<member><literal>lowest</literal></member>
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</simplelist>
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<literal>rc</literal> is the default for styles
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read from an RC file, <literal>theme</literal>
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is the default for styles read from theme RC files,
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<literal>application</literal>
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should be used for styles an application sets
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up, and <literal>gtk</literal> is used for styles
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that GTK+ creates internally.
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</para>
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</refsect2>
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<refsect2><title>Theme gtkrc files</title>
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<anchor id="theme-gtkrc-files"/>
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<para>
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Theme RC files are loaded first from under the <filename>~/.themes/</filename>,
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then from the directory from gtk_rc_get_theme_dir(). The files looked at will
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be <filename>gtk-3.0/gtkrc</filename>.
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</para>
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<para>
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When the application prefers dark themes
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(see the #GtkSettings:gtk-application-prefer-dark-theme property for details),
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<filename>gtk-3.0/gtkrc-dark</filename> will be loaded first, and if not present
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<filename>gtk-3.0/gtkrc</filename> will be loaded.
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</para>
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</refsect2>
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<refsect2>
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<anchor id="optimizing-rc-style-matches"/>
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<title>Optimizing RC Style Matches</title>
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<para>
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Everytime a widget is created and added to the layout hierarchy of a #GtkWindow
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("anchored" to be exact), a list of matching RC styles out of all RC styles read
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in so far is composed.
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For this, every RC style is matched against the widgets class path,
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the widgets name path and widgets inheritance hierarchy.
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As a consequence, significant slowdown can be caused by utilization of many
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RC styles and by using RC style patterns that are slow or complicated to match
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against a given widget.
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The following ordered list provides a number of advices (prioritized by
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effectiveness) to reduce the performance overhead associated with RC style
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matches:
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<orderedlist>
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<listitem><para>
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Move RC styles for specific applications into RC files dedicated to those
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applications and parse application specific RC files only from
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applications that are affected by them.
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This reduces the overall amount of RC styles that have to be considered
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for a match across a group of applications.
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</para></listitem>
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<listitem><para>
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Merge multiple styles which use the same matching rule, for instance:
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<informalexample><programlisting>
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style "Foo" { foo_content }
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class "X" style "Foo"
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style "Bar" { bar_content }
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class "X" style "Bar"
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</programlisting></informalexample>
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is faster to match as:
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<informalexample><programlisting>
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style "FooBar" { foo_content bar_content }
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class "X" style "FooBar"
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</programlisting></informalexample>
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</para></listitem>
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<listitem><para>
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Use of wildcards should be avoided, this can reduce the individual RC style
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match to a single integer comparison in most cases.
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</para></listitem>
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<listitem><para>
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To avoid complex recursive matching, specification of full class names
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(for <literal>class</literal> matches) or full path names (for
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<literal>widget</literal> and <literal>widget_class</literal> matches)
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is to be preferred over shortened names
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containing <literal>"*"</literal> or <literal>"?"</literal>.
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</para></listitem>
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<listitem><para>
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If at all necessary, wildcards should only be used at the tail or head
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of a pattern. This reduces the match complexity to a string comparison
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per RC style.
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</para></listitem>
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<listitem><para>
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When using wildcards, use of <literal>"?"</literal> should be preferred
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over <literal>"*"</literal>. This can reduce the matching complexity from
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O(n^2) to O(n). For example <literal>"Gtk*Box"</literal> can be turned into
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<literal>"Gtk?Box"</literal> and will still match #GtkHBox and #GtkVBox.
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</para></listitem>
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<listitem><para>
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The use of <literal>"*"</literal> wildcards should be restricted as much
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as possible, because matching <literal>"A*B*C*RestString"</literal> can
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result in matching complexities of O(n^2) worst case.
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</para></listitem>
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</orderedlist>
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</para>
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</refsect2>
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<refsect2><title>Toplevel declarations</title>
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<para>
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An RC file is a text file which is composed of a sequence
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of declarations. <literal>'#'</literal> characters delimit comments and
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the portion of a line after a <literal>'#'</literal> is ignored when parsing
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an RC file.
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</para>
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<para>
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The possible toplevel declarations are:
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<variablelist>
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<varlistentry>
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<term><literal>binding <replaceable>name</replaceable>
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{ ... }</literal></term>
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<listitem>
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<para>Declares a binding set.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>class <replaceable>pattern</replaceable>
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[ style | binding ][ : <replaceable>priority</replaceable> ]
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<replaceable>name</replaceable></literal></term>
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<listitem>
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<para>Specifies a style or binding set for a particular
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branch of the inheritance hierarchy.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>include <replaceable>filename</replaceable></literal></term>
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<listitem>
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<para>Parses another file at this point. If
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<replaceable>filename</replaceable> is not an absolute filename,
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it is searched in the directories of the currently open RC files.
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</para>
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<para>GTK+ also tries to load a
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<link linkend="locale-specific-rc">locale-specific variant</link> of
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the included file.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>module_path <replaceable>path</replaceable></literal></term>
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<listitem>
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<para>Sets a path (a list of directories separated
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by colons) that will be searched for theme engines referenced in
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RC files.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>pixmap_path <replaceable>path</replaceable></literal></term>
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<listitem>
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<para>Sets a path (a list of directories separated
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by colons) that will be searched for pixmaps referenced in
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RC files.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>im_module_file <replaceable>pathname</replaceable></literal></term>
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<listitem>
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<para>Sets the pathname for the IM modules file. Setting this from RC files
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is deprecated; you should use the environment variable <envar>GTK_IM_MODULE_FILE</envar>
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instead.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>style <replaceable>name</replaceable> [ =
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<replaceable>parent</replaceable> ] { ... }</literal></term>
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<listitem>
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<para>Declares a style.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>widget <replaceable>pattern</replaceable>
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[ style | binding ][ : <replaceable>priority</replaceable> ]
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<replaceable>name</replaceable></literal></term>
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<listitem>
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<para>Specifies a style or binding set for a particular
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group of widgets by matching on the widget pathname.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>widget_class <replaceable>pattern</replaceable>
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[ style | binding ][ : <replaceable>priority</replaceable> ]
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<replaceable>name</replaceable></literal></term>
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<listitem>
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<para>Specifies a style or binding set for a particular
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group of widgets by matching on the class pathname.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable>setting</replaceable> = <replaceable>value</replaceable></term>
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<listitem>
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<para>Specifies a value for a <link linkend="GtkSettings">setting</link>.
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Note that settings in RC files are overwritten by system-wide settings
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(which are managed by an XSettings manager on X11).</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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<refsect2><title>Styles</title>
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<para>
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A RC style is specified by a <literal>style</literal>
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declaration in a RC file, and then bound to widgets
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with a <literal>widget</literal>, <literal>widget_class</literal>,
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or <literal>class</literal> declaration. All styles
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applying to a particular widget are composited together
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with <literal>widget</literal> declarations overriding
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<literal>widget_class</literal> declarations which, in
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turn, override <literal>class</literal> declarations.
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Within each type of declaration, later declarations override
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earlier ones.
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</para>
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<para>
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Within a <literal>style</literal> declaration, the possible
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elements are:
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<variablelist>
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<varlistentry>
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<term><literal>bg[<replaceable>state</replaceable>] =
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<replaceable>color</replaceable></literal></term>
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<listitem>
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<para>
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Sets the color used for the background of most widgets.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>fg[<replaceable>state</replaceable>] =
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<replaceable>color</replaceable></literal></term>
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<listitem>
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<para>
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Sets the color used for the foreground of most widgets.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>base[<replaceable>state</replaceable>] =
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<replaceable>color</replaceable></literal></term>
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<listitem>
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<para>
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Sets the color used for the background of widgets displaying
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editable text. This color is used for the background
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of, among others, #GtkText, #GtkEntry, #GtkList, and #GtkCList.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>text[<replaceable>state</replaceable>] =
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<replaceable>color</replaceable></literal></term>
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<listitem>
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<para>
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Sets the color used for foreground of widgets using
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<literal>base</literal> for the background color.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>xthickness =
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<replaceable>number</replaceable></literal></term>
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<listitem>
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<para>
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Sets the xthickness, which is used for various horizontal padding
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values in GTK+.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>ythickness =
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<replaceable>number</replaceable></literal></term>
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<listitem>
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<para>
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Sets the ythickness, which is used for various vertical padding
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values in GTK+.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>bg_pixmap[<replaceable>state</replaceable>] =
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<replaceable>pixmap</replaceable></literal></term>
|
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<listitem>
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<para>
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Sets a background pixmap to be used in place of
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the <literal>bg</literal> color (or for #GtkText,
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in place of the <literal>base</literal> color. The special
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value <literal>"<parent>"</literal> may be used to indicate that the widget should
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use the same background pixmap as its parent. The special value
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<literal>"<none>"</literal> may be used to indicate no background pixmap.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>font = <replaceable>font</replaceable></literal></term>
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<listitem>
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<para>
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Starting with GTK+ 2.0, the "font" and "fontset"
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|
declarations are ignored; use "font_name" declarations instead.
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</para>
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</listitem>
|
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</varlistentry>
|
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<varlistentry>
|
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<term><literal>fontset = <replaceable>font</replaceable></literal></term>
|
|
<listitem>
|
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<para>
|
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Starting with GTK+ 2.0, the "font" and "fontset"
|
|
declarations are ignored; use "font_name" declarations instead.
|
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</para>
|
|
</listitem>
|
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</varlistentry>
|
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<varlistentry>
|
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<term><literal>font_name = <replaceable>font</replaceable></literal></term>
|
|
<listitem>
|
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<para>
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Sets the font for a widget. <replaceable>font</replaceable> must be
|
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a Pango font name, e.g. <literal>"Sans Italic 10"</literal>.
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For details about Pango font names, see
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pango_font_description_from_string().
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>stock[<replaceable>"stock-id"</replaceable>] = { <replaceable>icon source specifications</replaceable> }</literal></term>
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<listitem>
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<para>
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|
Defines the icon for a stock item.
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</para>
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</listitem>
|
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</varlistentry>
|
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<varlistentry>
|
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<term><literal>color[<replaceable>"color-name"</replaceable>] = <replaceable>color specification</replaceable></literal></term>
|
|
<listitem>
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<para>
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|
Since 2.10, this element can be used to defines symbolic colors. See below for
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the syntax of color specifications.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
|
|
<term><literal>engine <replaceable>"engine"</replaceable> { <replaceable>engine-specific
|
|
settings</replaceable> }</literal></term>
|
|
<listitem>
|
|
<para>
|
|
Defines the engine to be used when drawing with this style.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><literal><replaceable>class</replaceable>::<replaceable>property</replaceable> = <replaceable>value</replaceable></literal></term>
|
|
<listitem>
|
|
<para>
|
|
Sets a <link linkend="style-properties">style property</link> for a widget class.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
<para>
|
|
The colors and background pixmaps are specified as a function of the
|
|
state of the widget. The states are:
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><literal>NORMAL</literal></term>
|
|
<listitem>
|
|
<para>
|
|
A color used for a widget in its normal state.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><literal>ACTIVE</literal></term>
|
|
<listitem>
|
|
<para>
|
|
A variant of the <literal>NORMAL</literal> color used when the
|
|
widget is in the %GTK_STATE_ACTIVE state, and also for
|
|
the trough of a ScrollBar, tabs of a NoteBook
|
|
other than the current tab and similar areas.
|
|
Frequently, this should be a darker variant
|
|
of the <literal>NORMAL</literal> color.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><literal>PRELIGHT</literal></term>
|
|
<listitem>
|
|
<para>
|
|
A color used for widgets in the %GTK_STATE_PRELIGHT state. This
|
|
state is the used for Buttons and MenuItems
|
|
that have the mouse cursor over them, and for
|
|
their children.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><literal>SELECTED</literal></term>
|
|
<listitem>
|
|
<para>
|
|
A color used to highlight data selected by the user.
|
|
for instance, the selected items in a list widget, and the
|
|
selection in an editable widget.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><literal>INSENSITIVE</literal></term>
|
|
<listitem>
|
|
<para>
|
|
A color used for the background of widgets that have
|
|
been set insensitive with gtk_widget_set_sensitive().
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
|
|
<para><anchor id="color-format"/>
|
|
Colors can be specified as a string containing a color name (GTK+ knows
|
|
all names from the X color database <filename>/usr/lib/X11/rgb.txt</filename>),
|
|
in one of the hexadecimal forms <literal>#rrrrggggbbbb</literal>,
|
|
<literal>#rrrgggbbb</literal>, <literal>#rrggbb</literal>,
|
|
or <literal>#rgb</literal>, where <literal>r</literal>,
|
|
<literal>g</literal> and <literal>b</literal> are
|
|
hex digits, or they can be specified as a triplet
|
|
<literal>{ <replaceable>r</replaceable>, <replaceable>g</replaceable>,
|
|
<replaceable>b</replaceable>}</literal>, where <literal>r</literal>,
|
|
<literal>g</literal> and <literal>b</literal> are either integers in
|
|
the range 0-65535 or floats in the range 0.0-1.0.
|
|
</para>
|
|
<para>
|
|
Since 2.10, colors can also be specified by refering to a symbolic color, as
|
|
follows: <literal>@<!-- -->color-name</literal>, or by using expressions to combine
|
|
colors. The following expressions are currently supported:
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term>mix (<replaceable>factor</replaceable>, <replaceable>color1</replaceable>, <replaceable>color2</replaceable>)</term>
|
|
<listitem><para>
|
|
Computes a new color by mixing <replaceable>color1</replaceable> and
|
|
<replaceable>color2</replaceable>. The <replaceable>factor</replaceable>
|
|
determines how close the new color is to <replaceable>color1</replaceable>.
|
|
A factor of 1.0 gives pure <replaceable>color1</replaceable>, a factor of
|
|
0.0 gives pure <replaceable>color2</replaceable>.
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>shade (<replaceable>factor</replaceable>, <replaceable>color</replaceable>)</term>
|
|
<listitem><para>
|
|
Computes a lighter or darker variant of <replaceable>color</replaceable>.
|
|
A <replaceable>factor</replaceable> of 1.0 leaves the color unchanged, smaller
|
|
factors yield darker colors, larger factors yield lighter colors.
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>lighter (<replaceable>color</replaceable>)</term>
|
|
<listitem><para>
|
|
This is an abbreviation for
|
|
<literal>shade (1.3, <replaceable>color</replaceable>)</literal>.
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>darker (<replaceable>color</replaceable>)</term>
|
|
<listitem><para>
|
|
This is an abbreviation for
|
|
<literal>shade (0.7, <replaceable>color</replaceable>)</literal>.
|
|
</para></listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
<para>
|
|
Here are some examples of color expressions:
|
|
<informalexample><programlisting>
|
|
mix (0.5, "red", "blue")
|
|
shade (1.5, mix (0.3, "#0abbc0", { 0.3, 0.5, 0.9 }))
|
|
lighter (@<!-- -->foreground)
|
|
</programlisting></informalexample>
|
|
</para>
|
|
|
|
<para>
|
|
In a <literal>stock</literal> definition, icon sources are specified as a
|
|
4-tuple of image filename or icon name, text direction, widget state, and size, in that
|
|
order. Each icon source specifies an image filename or icon name to use with a given
|
|
direction, state, and size. Filenames are specified as a string such
|
|
as <literal>"itemltr.png"</literal>, while icon names (looked up
|
|
in the current icon theme), are specified with a leading
|
|
<literal>@</literal>, such as <literal>@"item-ltr"</literal>.
|
|
The <literal>*</literal> character can be used as a
|
|
wildcard, and if direction/state/size are omitted they default to
|
|
<literal>*</literal>. So for example, the following specifies different icons to
|
|
use for left-to-right and right-to-left languages:
|
|
<informalexample><programlisting>
|
|
stock["my-stock-item"] =
|
|
{
|
|
{ "itemltr.png", LTR, *, * },
|
|
{ "itemrtl.png", RTL, *, * }
|
|
}
|
|
</programlisting></informalexample>
|
|
This could be abbreviated as follows:
|
|
<informalexample><programlisting>
|
|
stock["my-stock-item"] =
|
|
{
|
|
{ "itemltr.png", LTR },
|
|
{ "itemrtl.png", RTL }
|
|
}
|
|
</programlisting></informalexample>
|
|
</para>
|
|
|
|
<para>
|
|
You can specify custom icons for specific sizes, as follows:
|
|
<informalexample><programlisting>
|
|
stock["my-stock-item"] =
|
|
{
|
|
{ "itemmenusize.png", *, *, "gtk-menu" },
|
|
{ "itemtoolbarsize.png", *, *, "gtk-large-toolbar" }
|
|
{ "itemgeneric.png" } /* implicit *, *, * as a fallback */
|
|
}
|
|
</programlisting></informalexample>
|
|
The sizes that come with GTK+ itself are <literal>"gtk-menu"</literal>,
|
|
<literal>"gtk-small-toolbar"</literal>, <literal>"gtk-large-toolbar"</literal>,
|
|
<literal>"gtk-button"</literal>, <literal>"gtk-dialog"</literal>. Applications
|
|
can define other sizes.
|
|
</para>
|
|
|
|
<para>
|
|
It's also possible to use custom icons for a given state, for example:
|
|
<informalexample><programlisting>
|
|
stock["my-stock-item"] =
|
|
{
|
|
{ "itemprelight.png", *, PRELIGHT },
|
|
{ "iteminsensitive.png", *, INSENSITIVE },
|
|
{ "itemgeneric.png" } /* implicit *, *, * as a fallback */
|
|
}
|
|
</programlisting></informalexample>
|
|
</para>
|
|
|
|
<para>
|
|
When selecting an icon source to use, GTK+ will consider text direction most
|
|
important, state second, and size third. It will select the best match based on
|
|
those criteria. If an attribute matches exactly (e.g. you specified
|
|
<literal>PRELIGHT</literal> or specified the size), GTK+ won't modify the image;
|
|
if the attribute matches with a wildcard, GTK+ will scale or modify the image to
|
|
match the state and size the user requested.
|
|
</para>
|
|
|
|
</refsect2>
|
|
|
|
<refsect2><title>Key bindings</title>
|
|
<para>
|
|
Key bindings allow the user to specify actions to be
|
|
taken on particular key presses. The form of a binding
|
|
set declaration is:
|
|
</para>
|
|
|
|
<informalexample><programlisting>
|
|
binding <replaceable>name</replaceable> {
|
|
bind <replaceable>key</replaceable> {
|
|
<replaceable>signalname</replaceable> (<replaceable>param</replaceable>, ...)
|
|
...
|
|
}
|
|
...
|
|
}
|
|
</programlisting></informalexample>
|
|
|
|
<para>
|
|
<replaceable>key</replaceable> is a string consisting of a
|
|
series of modifiers followed by the name of a key. The
|
|
modifiers can be:
|
|
<simplelist>
|
|
<member><literal><alt></literal></member>
|
|
<member><literal><ctl></literal></member>
|
|
<member><literal><control></literal></member>
|
|
<member><literal><meta></literal></member>
|
|
<member><literal><hyper></literal></member>
|
|
<member><literal><super></literal></member>
|
|
<member><literal><mod1></literal></member>
|
|
<member><literal><mod2></literal></member>
|
|
<member><literal><mod3></literal></member>
|
|
<member><literal><mod4></literal></member>
|
|
<member><literal><mod5></literal></member>
|
|
<member><literal><release></literal></member>
|
|
<member><literal><shft></literal></member>
|
|
<member><literal><shift></literal></member>
|
|
</simplelist>
|
|
<literal><shft></literal> is an alias for
|
|
<literal><shift></literal>,
|
|
<literal><ctl></literal> is an alias for
|
|
<literal><control></literal>,
|
|
and
|
|
<literal><alt></literal> is an alias for
|
|
<literal><mod1></literal>.
|
|
</para>
|
|
|
|
<para>
|
|
The action that is bound to the key is a sequence
|
|
of signal names (strings) followed by parameters for
|
|
each signal. The signals must be action signals.
|
|
(See g_signal_new()). Each parameter can be
|
|
a float, integer, string, or unquoted string
|
|
representing an enumeration value. The types of
|
|
the parameters specified must match the types of the
|
|
parameters of the signal.
|
|
</para>
|
|
|
|
<para>
|
|
Binding sets are connected to widgets in the same manner as styles,
|
|
with one difference: Binding sets override other binding sets first
|
|
by pattern type, then by priority and then by order of specification.
|
|
The priorities that can be specified and their default values are the
|
|
same as for styles.
|
|
</para>
|
|
</refsect2>
|
|
|
|
<!-- ##### SECTION See_Also ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
<!-- ##### SECTION Stability_Level ##### -->
|
|
|
|
|
|
<!-- ##### SECTION Image ##### -->
|
|
|
|
|
|
<!-- ##### STRUCT GtkRcStyle ##### -->
|
|
<para>
|
|
The #GtkRcStyle structure is used to represent a set
|
|
of information about the appearance of a widget.
|
|
This can later be composited together with other
|
|
#GtkRcStyle structures to form a #GtkStyle.
|
|
</para>
|
|
|
|
@name:
|
|
@bg_pixmap_name:
|
|
@font_desc:
|
|
@color_flags:
|
|
@fg:
|
|
@bg:
|
|
@text:
|
|
@base:
|
|
@xthickness:
|
|
@ythickness:
|
|
|
|
<!-- ##### ENUM GtkRcFlags ##### -->
|
|
<para>
|
|
The #GtkRcFlags enumeration is used as a bitmask
|
|
to specify which fields of a #GtkRcStyle have been
|
|
set for each state.
|
|
</para>
|
|
|
|
@GTK_RC_FG: If present, the foreground color has been set for this state.
|
|
@GTK_RC_BG: If present, the background color has been set for this state.
|
|
@GTK_RC_TEXT: If present, the text color has been set for this state.
|
|
@GTK_RC_BASE: If present, the base color has been set for this state.
|
|
|
|
<!-- ##### ENUM GtkRcTokenType ##### -->
|
|
<para>
|
|
The #GtkRcTokenType enumeration represents the tokens
|
|
in the RC file. It is exposed so that theme engines
|
|
can reuse these tokens when parsing the theme-engine
|
|
specific portions of a RC file.
|
|
</para>
|
|
|
|
@GTK_RC_TOKEN_INVALID:
|
|
@GTK_RC_TOKEN_INCLUDE:
|
|
@GTK_RC_TOKEN_NORMAL:
|
|
@GTK_RC_TOKEN_ACTIVE:
|
|
@GTK_RC_TOKEN_PRELIGHT:
|
|
@GTK_RC_TOKEN_SELECTED:
|
|
@GTK_RC_TOKEN_INSENSITIVE:
|
|
@GTK_RC_TOKEN_FG:
|
|
@GTK_RC_TOKEN_BG:
|
|
@GTK_RC_TOKEN_TEXT:
|
|
@GTK_RC_TOKEN_BASE:
|
|
@GTK_RC_TOKEN_XTHICKNESS:
|
|
@GTK_RC_TOKEN_YTHICKNESS:
|
|
@GTK_RC_TOKEN_FONT:
|
|
@GTK_RC_TOKEN_FONTSET:
|
|
@GTK_RC_TOKEN_FONT_NAME:
|
|
@GTK_RC_TOKEN_BG_PIXMAP:
|
|
@GTK_RC_TOKEN_PIXMAP_PATH:
|
|
@GTK_RC_TOKEN_STYLE:
|
|
@GTK_RC_TOKEN_BINDING:
|
|
@GTK_RC_TOKEN_BIND:
|
|
@GTK_RC_TOKEN_WIDGET:
|
|
@GTK_RC_TOKEN_WIDGET_CLASS:
|
|
@GTK_RC_TOKEN_CLASS:
|
|
@GTK_RC_TOKEN_LOWEST:
|
|
@GTK_RC_TOKEN_GTK:
|
|
@GTK_RC_TOKEN_APPLICATION:
|
|
@GTK_RC_TOKEN_THEME:
|
|
@GTK_RC_TOKEN_RC:
|
|
@GTK_RC_TOKEN_HIGHEST:
|
|
@GTK_RC_TOKEN_ENGINE:
|
|
@GTK_RC_TOKEN_MODULE_PATH:
|
|
@GTK_RC_TOKEN_IM_MODULE_PATH:
|
|
@GTK_RC_TOKEN_IM_MODULE_FILE:
|
|
@GTK_RC_TOKEN_STOCK:
|
|
@GTK_RC_TOKEN_LTR:
|
|
@GTK_RC_TOKEN_RTL:
|
|
@GTK_RC_TOKEN_COLOR:
|
|
@GTK_RC_TOKEN_UNBIND:
|
|
@GTK_RC_TOKEN_LAST:
|
|
|
|
<!-- ##### FUNCTION gtk_rc_scanner_new ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@void:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_style ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@widget:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_style_by_paths ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@settings:
|
|
@widget_path:
|
|
@class_path:
|
|
@type:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_parse ##### -->
|
|
<para>
|
|
Parses a given resource file.
|
|
</para>
|
|
|
|
@filename: the filename of a file to parse. If @filename is not absolute, it
|
|
is searched in the current directory.
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_parse_string ##### -->
|
|
<para>
|
|
Parses resource information directly from a string.
|
|
</para>
|
|
|
|
@rc_string: a string to parse.
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_reparse_all ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@void:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_reparse_all_for_settings ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@settings:
|
|
@force_load:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_reset_styles ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@settings:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_add_default_file ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@filename:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_default_files ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@void:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_set_default_files ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@filenames:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_parse_color ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@scanner:
|
|
@color:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_parse_color_full ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@scanner:
|
|
@style:
|
|
@color:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_parse_state ##### -->
|
|
<para>
|
|
Parses a #GtkStateType variable from the format expected
|
|
in a RC file.
|
|
</para>
|
|
|
|
@scanner: a #GtkScanner (must be initialized for parsing an RC file)
|
|
@state: A pointer to a #GtkStateType variable in which to
|
|
store the result.
|
|
@Returns: %G_TOKEN_NONE if parsing succeeded, otherwise the token
|
|
that was expected but not found.
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_parse_priority ##### -->
|
|
<para>
|
|
Parses a #GtkPathPriorityType variable from the format expected
|
|
in a RC file.
|
|
</para>
|
|
|
|
@scanner: a #GtkScanner (must be initialized for parsing an RC file)
|
|
@priority: A pointer to #GtkPathPriorityType variable in which
|
|
to store the result.
|
|
@Returns: %G_TOKEN_NONE if parsing succeeded, otherwise the token
|
|
that was expected but not found.
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_find_module_in_path ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@module_file: The name of the module to search for.
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_find_pixmap_in_path ##### -->
|
|
<para>
|
|
</para>
|
|
|
|
@settings:
|
|
@scanner: a #GtkScanner. Used for printing out warning messages
|
|
if the file is not found.
|
|
@pixmap_file: The name of the file to search for.
|
|
@Returns: The filename, if found (must be freed with g_free()),
|
|
otherwise %NULL.
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_module_dir ##### -->
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|
<para>
|
|
</para>
|
|
|
|
@void:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_im_module_path ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@void:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_im_module_file ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@void:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_get_theme_dir ##### -->
|
|
<para>
|
|
Returns the standard directory in which themes should
|
|
be installed. (GTK+ does not actually use this directory
|
|
itself.)
|
|
</para>
|
|
|
|
@void:
|
|
@Returns: The directory (must be freed with g_free()).
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_style_new ##### -->
|
|
<para>
|
|
Creates a new #GtkRcStyle with no fields set and
|
|
a reference count of 1.
|
|
</para>
|
|
|
|
@void:
|
|
@Returns: the newly-created #GtkRcStyle
|
|
|
|
|
|
<!-- ##### FUNCTION gtk_rc_style_copy ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@orig:
|
|
@Returns:
|
|
|
|
|