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Document <classname> in paths.

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2006-03-23  Matthias Clasen  <mclasen@redhat.com>

	* gtk/tmpl/gtkrc.sgml: Document <classname> in paths.
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Matthias Clasen 2006-03-23 23:35:24 +00:00 committed by Matthias Clasen
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commit 997470889e
2 changed files with 40 additions and 33 deletions
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@ -1,3 +1,7 @@
2006-03-23 Matthias Clasen <mclasen@redhat.com>
* gtk/tmpl/gtkrc.sgml: Document <classname> in paths.
2006-03-22 Matthias Clasen <mclasen@redhat.com> 2006-03-22 Matthias Clasen <mclasen@redhat.com>
* gtk/gtk-sections.txt: Additions. * gtk/gtk-sections.txt: Additions.

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docs/reference/gtk/tmpl/gtkrc.sgml
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@ -56,48 +56,50 @@ of such a statement:
widget "mywindow.*.GtkEntry" style "my-entry-class" widget "mywindow.*.GtkEntry" style "my-entry-class"
</programlisting></informalexample> </programlisting></informalexample>
attaches the style <literal>"my-entry-class"</literal> attaches the style <literal>"my-entry-class"</literal> to all
to all widgets whose <firstterm>widget path</firstterm> widgets whose <firstterm>widget path</firstterm> matches the
matches the <firstterm>pattern</firstterm> <firstterm>pattern</firstterm> <literal>"mywindow.*.GtkEntry"</literal>.
<literal>"mywindow.*.GtkEntry"</literal>. That is, all That is, all #GtkEntry widgets which are part of a #GtkWindow named
#GtkEntry widgets which are part of a #GtkWindow named <literal>"mywindow"</literal>. <literal>"mywindow"</literal>.
</para> </para>
<para> <para>
The patterns here are given in the standard shell glob The patterns here are given in the standard shell glob syntax.
syntax. The <literal>"?"</literal> wildcard matches The <literal>"?"</literal> wildcard matches any character, while
any character, while <literal>"*"</literal> matches <literal>"*"</literal> matches zero or more of any character.
zero or more of any character. The three types of The three types of matching are against the widget path, the
matching are against the widget path, the <firstterm>class path</firstterm> and the class hierarchy. Both the
<firstterm>class path</firstterm> and the class widget path and the class path consist of a <literal>"."</literal>
hierarchy. Both the widget path and the class path consist of a separated list of all the parents of the widget and the widget itself
<literal>"."</literal> separated list of all the from outermost to innermost. The difference is that in the widget path,
parents of the widget and the widget itself from the name assigned by gtk_widget_set_name() is used if present, otherwise
outermost to innermost. The difference is that in the class name of the widget, while for the class path, the class name is
the widget path, the name assigned by always used.
gtk_widget_set_name() is used
if present, otherwise the class name of the widget, while
for the class path, the class name is always used.
</para> </para>
<para> <para>
So, if you have a #GtkEntry named Since GTK+ 2.10,<literal>widget_class</literal> paths can also contain
<literal>"myentry"</literal>, inside of a horizontal box in a window <literal>&lt:classname&gt;</literal> substrings, which are matching
named <literal>"mywindow"</literal>, then the the class with the given name and any derived classes. For instance,
<informalexample><programlisting>
widget_class "*&lt;GtkMenuItem&gt;.GtkLabel" style "my-style"
</programlisting></informalexample>
will match #GtkLabel widgets which are contained in any kind of menu item.
</para>
<para>
So, if you have a #GtkEntry named <literal>"myentry"</literal>, inside of a
horizontal box in a window named <literal>"mywindow"</literal>, then the
widget path is: <literal>"mywindow.GtkHBox.myentry"</literal> widget path is: <literal>"mywindow.GtkHBox.myentry"</literal>
while the class path is: <literal>"GtkWindow.GtkHBox.GtkEntry"</literal>. while the class path is: <literal>"GtkWindow.GtkHBox.GtkEntry"</literal>.
</para> </para>
<para> <para>
Matching against class is a little different. The pattern Matching against class is a little different. The pattern match is done
match is done against all class names in the widgets against all class names in the widgets class hierarchy (not the layout
class hierarchy (not the layout hierarchy) in sequence, so the hierarchy) in sequence, so the pattern:
pattern:
<informalexample><programlisting> <informalexample><programlisting>
class "GtkButton" style "my-style" class "GtkButton" style "my-style"
</programlisting></informalexample> </programlisting></informalexample>
will match not just #GtkButton widgets, will match not just #GtkButton widgets, but also #GtkToggleButton and
but also #GtkToggleButton and #GtkCheckButton widgets, since those classes derive from #GtkButton.
#GtkCheckButton widgets, since
those classes derive from #GtkButton.
</para> </para>
<para> <para>
Additionally, a priority can be specified for each pattern, and styles Additionally, a priority can be specified for each pattern, and styles
@ -133,10 +135,11 @@ in so far is composed.
For this, every RC style is matched against the widgets class path, For this, every RC style is matched against the widgets class path,
the widgets name path and widgets inheritance hierarchy. the widgets name path and widgets inheritance hierarchy.
As a consequence, significant slowdown can be caused by utilization of many As a consequence, significant slowdown can be caused by utilization of many
RC styles and by using RC sytle patterns that are slow or complicated to match RC styles and by using RC style patterns that are slow or complicated to match
against a given widget. against a given widget.
The following ordered list provides a number of advices (prioritized by effectiveness) The following ordered list provides a number of advices (prioritized by
to reduce the performance overhead associated with RC style matches: effectiveness) to reduce the performance overhead associated with RC style
matches:
<orderedlist> <orderedlist>