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gtk2/gtk/gtkcssprovider.c
Benjamin Otte 8605a2a10a cssprovider: Speed up gtk_widget_style_get() property lookups 
Previously we got the list of all matching rules and then iterated it to
find the first one that had the property. Now we look while matching
rules, so we don't lookup rules that we don't need.
2011-05-18 22:17:57 +02:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <cairo-gobject.h>
#include "gtkcssproviderprivate.h"
#include "gtkcssparserprivate.h"
#include "gtkcssselectorprivate.h"
#include "gtkcssstringfuncsprivate.h"
#include "gtksymboliccolor.h"
#include "gtkstyleprovider.h"
#include "gtkstylecontextprivate.h"
#include "gtkbindings.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtkintl.h"
/**
* SECTION:gtkcssprovider
* @Short_description: CSS-like styling for widgets
* @Title: GtkCssProvider
* @See_also: #GtkStyleContext, #GtkStyleProvider
*
* GtkCssProvider is an object implementing the #GtkStyleProvider interface.
* It is able to parse <ulink url="http://www.w3.org/TR/CSS2">CSS</ulink>-like
* input in order to style widgets.
*
* <refsect2 id="gtkcssprovider-files">
* <title>Default files</title>
* <para>
* An application can cause GTK+ to parse a specific CSS style sheet by
* calling gtk_css_provider_load_from_file() and adding the provider with
* gtk_style_context_add_provider() or gtk_style_context_add_provider_for_screen().
* In addition, certain files will be read when GTK+ is initialized. First,
* the file <filename><envar>$XDG_CONFIG_HOME</envar>/gtk-3.0/gtk.css</filename>
* is loaded if it exists. Then, GTK+ tries to load
* <filename><envar>$HOME</envar>/.themes/<replaceable>theme-name</replaceable>/gtk-3.0/gtk.css</filename>,
* falling back to
* <filename><replaceable>datadir</replaceable>/share/themes/<replaceable>theme-name</replaceable>/gtk-3.0/gtk.css</filename>,
* where <replaceable>theme-name</replaceable> is the name of the current theme
* (see the #GtkSettings:gtk-theme-name setting) and <replaceable>datadir</replaceable>
* is the prefix configured when GTK+ was compiled, unless overridden by the
* <envar>GTK_DATA_PREFIX</envar> environment variable.
* </para>
* </refsect2>
* <refsect2 id="gtkcssprovider-stylesheets">
* <title>Style sheets</title>
* <para>
* The basic structure of the style sheets understood by this provider is
* a series of statements, which are either rule sets or '@-rules', separated
* by whitespace.
* </para>
* <para>
* A rule set consists of a selector and a declaration block, which is
* a series of declarations enclosed in curly braces ({ and }). The
* declarations are separated by semicolons (;). Multiple selectors can
* share the same declaration block, by putting all the separators in
* front of the block, separated by commas.
* </para>
* <example><title>A rule set with two selectors</title>
* <programlisting language="text">
* GtkButton, GtkEntry {
* color: &num;ff00ea;
* font: Comic Sans 12
* }
* </programlisting>
* </example>
* </refsect2>
* <refsect2 id="gtkcssprovider-selectors">
* <title>Selectors</title>
* <para>
* Selectors work very similar to the way they do in CSS, with widget class
* names taking the role of element names, and widget names taking the role
* of IDs. When used in a selector, widget names must be prefixed with a
* '&num;' character. The '*' character represents the so-called universal
* selector, which matches any widget.
* </para>
* <para>
* To express more complicated situations, selectors can be combined in
* various ways:
* <itemizedlist>
* <listitem><para>To require that a widget satisfies several conditions,
* combine several selectors into one by concatenating them. E.g.
* <literal>GtkButton&num;button1</literal> matches a GtkButton widget
* with the name button1.</para></listitem>
* <listitem><para>To only match a widget when it occurs inside some other
* widget, write the two selectors after each other, separated by whitespace.
* E.g. <literal>GtkToolBar GtkButton</literal> matches GtkButton widgets
* that occur inside a GtkToolBar.</para></listitem>
* <listitem><para>In the previous example, the GtkButton is matched even
* if it occurs deeply nested inside the toolbar. To restrict the match
* to direct children of the parent widget, insert a '>' character between
* the two selectors. E.g. <literal>GtkNotebook > GtkLabel</literal> matches
* GtkLabel widgets that are direct children of a GtkNotebook.</para></listitem>
* </itemizedlist>
* </para>
* <example>
* <title>Widget classes and names in selectors</title>
* <programlisting language="text">
* /&ast; Theme labels that are descendants of a window &ast;/
* GtkWindow GtkLabel {
* background-color: &num;898989
* }
*
* /&ast; Theme notebooks, and anything that's within these &ast;/
* GtkNotebook {
* background-color: &num;a939f0
* }
*
* /&ast; Theme combo boxes, and entries that
* are direct children of a notebook &ast;/
* GtkComboBox,
* GtkNotebook > GtkEntry {
* color: @fg_color;
* background-color: &num;1209a2
* }
*
* /&ast; Theme any widget within a GtkBin &ast;/
* GtkBin * {
* font-name: Sans 20
* }
*
* /&ast; Theme a label named title-label &ast;/
* GtkLabel&num;title-label {
* font-name: Sans 15
* }
*
* /&ast; Theme any widget named main-entry &ast;/
* &num;main-entry {
* background-color: &num;f0a810
* }
* </programlisting>
* </example>
* <para>
* Widgets may also define style classes, which can be used for matching.
* When used in a selector, style classes must be prefixed with a '.'
* character.
* </para>
* <para>
* Refer to the documentation of individual widgets to learn which
* style classes they define and see <xref linkend="gtkstylecontext-classes"/>
* for a list of all style classes used by GTK+ widgets.
* </para>
* <para>
* Note that there is some ambiguity in the selector syntax when it comes
* to differentiation widget class names from regions. GTK+ currently treats
* a string as a widget class name if it contains any uppercase characters
* (which should work for more widgets with names like GtkLabel).
* </para>
* <example>
* <title>Style classes in selectors</title>
* <programlisting language="text">
* /&ast; Theme all widgets defining the class entry &ast;/
* .entry {
* color: &num;39f1f9;
* }
*
* /&ast; Theme spinbuttons' entry &ast;/
* GtkSpinButton.entry {
* color: &num;900185
* }
* </programlisting>
* </example>
* <para>
* In complicated widgets like e.g. a GtkNotebook, it may be desirable
* to style different parts of the widget differently. To make this
* possible, container widgets may define regions, whose names
* may be used for matching in selectors.
* </para>
* <para>
* Some containers allow to further differentiate between regions by
* applying so-called pseudo-classes to the region. For example, the
* tab region in GtkNotebook allows to single out the first or last
* tab by using the :first-child or :last-child pseudo-class.
* When used in selectors, pseudo-classes must be prefixed with a
* ':' character.
* </para>
* <para>
* Refer to the documentation of individual widgets to learn which
* regions and pseudo-classes they define and see
* <xref linkend="gtkstylecontext-classes"/> for a list of all regions
* used by GTK+ widgets.
* </para>
* <example>
* <title>Regions in selectors</title>
* <programlisting language="text">
* /&ast; Theme any label within a notebook &ast;/
* GtkNotebook GtkLabel {
* color: &num;f90192;
* }
*
* /&ast; Theme labels within notebook tabs &ast;/
* GtkNotebook tab GtkLabel {
* color: &num;703910;
* }
*
* /&ast; Theme labels in the any first notebook
* tab, both selectors are equivalent &ast;/
* GtkNotebook tab:nth-child(first) GtkLabel,
* GtkNotebook tab:first-child GtkLabel {
* color: &num;89d012;
* }
* </programlisting>
* </example>
* <para>
* Another use of pseudo-classes is to match widgets depending on their
* state. This is conceptually similar to the :hover, :active or :focus
* pseudo-classes in CSS. The available pseudo-classes for widget states
* are :active, :prelight (or :hover), :insensitive, :selected, :focused
* and :inconsistent.
* </para>
* <example>
* <title>Styling specific widget states</title>
* <programlisting language="text">
* /&ast; Theme active (pressed) buttons &ast;/
* GtkButton:active {
* background-color: &num;0274d9;
* }
*
* /&ast; Theme buttons with the mouse pointer on it,
* both are equivalent &ast;/
* GtkButton:hover,
* GtkButton:prelight {
* background-color: &num;3085a9;
* }
*
* /&ast; Theme insensitive widgets, both are equivalent &ast;/
* :insensitive,
* *:insensitive {
* background-color: &num;320a91;
* }
*
* /&ast; Theme selection colors in entries &ast;/
* GtkEntry:selected {
* background-color: &num;56f9a0;
* }
*
* /&ast; Theme focused labels &ast;/
* GtkLabel:focused {
* background-color: &num;b4940f;
* }
*
* /&ast; Theme inconsistent checkbuttons &ast;/
* GtkCheckButton:inconsistent {
* background-color: &num;20395a;
* }
* </programlisting>
* </example>
* <para>
* Widget state pseudoclasses may only apply to the last element
* in a selector.
* </para>
* <para>
* To determine the effective style for a widget, all the matching rule
* sets are merged. As in CSS, rules apply by specificity, so the rules
* whose selectors more closely match a widget path will take precedence
* over the others.
* </para>
* </refsect2>
* <refsect2 id="gtkcssprovider-rules">
* <title>&commat; Rules</title>
* <para>
* GTK+'s CSS supports the &commat;import rule, in order to load another
* CSS style sheet in addition to the currently parsed one.
* </para>
* <example>
* <title>Using the &commat;import rule</title>
* <programlisting language="text">
* &commat;import url ("path/to/common.css");
* </programlisting>
* </example>
* <para id="css-binding-set">
* In order to extend key bindings affecting different widgets, GTK+
* supports the &commat;binding-set rule to parse a set of bind/unbind
* directives, see #GtkBindingSet for the supported syntax. Note that
* the binding sets defined in this way must be associated with rule sets
* by setting the gtk-key-bindings style property.
* </para>
* <para>
* Customized key bindings are typically defined in a separate
* <filename>gtk-keys.css</filename> CSS file and GTK+ loads this file
* according to the current key theme, which is defined by the
* #GtkSettings:gtk-key-theme-name setting.
* </para>
* <example>
* <title>Using the &commat;binding rule</title>
* <programlisting language="text">
* &commat;binding-set binding-set1 {
* bind "&lt;alt&gt;Left" { "move-cursor" (visual-positions, -3, 0) };
* unbind "End";
* };
*
* &commat;binding-set binding-set2 {
* bind "&lt;alt&gt;Right" { "move-cursor" (visual-positions, 3, 0) };
* bind "&lt;alt&gt;KP_space" { "delete-from-cursor" (whitespace, 1)
* "insert-at-cursor" (" ") };
* };
*
* GtkEntry {
* gtk-key-bindings: binding-set1, binding-set2;
* }
* </programlisting>
* </example>
* <para>
* GTK+ also supports an additional &commat;define-color rule, in order
* to define a color name which may be used instead of color numeric
* representations. Also see the #GtkSettings:gtk-color-scheme setting
* for a way to override the values of these named colors.
* </para>
* <example>
* <title>Defining colors</title>
* <programlisting language="text">
* &commat;define-color bg_color &num;f9a039;
*
* &ast; {
* background-color: &commat;bg_color;
* }
* </programlisting>
* </example>
* </refsect2>
* <refsect2 id="gtkcssprovider-symbolic-colors">
* <title>Symbolic colors</title>
* <para>
* Besides being able to define color names, the CSS parser is also able
* to read different color expressions, which can also be nested, providing
* a rich language to define colors which are derived from a set of base
* colors.
* </para>
* <example>
* <title>Using symbolic colors</title>
* <programlisting language="text">
* &commat;define-color entry-color shade (&commat;bg_color, 0.7);
*
* GtkEntry {
* background-color: @entry-color;
* }
*
* GtkEntry:focused {
* background-color: mix (&commat;entry-color,
* shade (&num;fff, 0.5),
* 0.8);
* }
* </programlisting>
* </example>
* <para>
* The various ways to express colors in GTK+ CSS are:
* </para>
* <informaltable>
* <tgroup cols="3">
* <thead>
* <row>
* <entry>Syntax</entry>
* <entry>Explanation</entry>
* <entry>Examples</entry>
* </row>
* </thead>
* <tbody>
* <row>
* <entry>rgb(@r, @g, @b)</entry>
* <entry>An opaque color; @r, @g, @b can be either integers between
* 0 and 255 or percentages</entry>
* <entry><literallayout>rgb(128, 10, 54)
* rgb(20%, 30%, 0%)</literallayout></entry>
* </row>
* <row>
* <entry>rgba(@r, @g, @b, @a)</entry>
* <entry>A translucent color; @r, @g, @b are as in the previous row,
* @a is a floating point number between 0 and 1</entry>
* <entry><literallayout>rgba(255, 255, 0, 0.5)</literallayout></entry>
* </row>
* <row>
* <entry>&num;@xxyyzz</entry>
* <entry>An opaque color; @xx, @yy, @zz are hexadecimal numbers
* specifying @r, @g, @b variants with between 1 and 4
* hexadecimal digits per component are allowed</entry>
* <entry><literallayout>&num;ff12ab
* &num;f0c</literallayout></entry>
* </row>
* <row>
* <entry>&commat;name</entry>
* <entry>Reference to a color that has been defined with
* &commat;define-color
* </entry>
* <entry>&commat;bg_color</entry>
* </row>
* <row>
* <entry>mix(@color1, @color2, @f)</entry>
* <entry>A linear combination of @color1 and @color2. @f is a
* floating point number between 0 and 1.</entry>
* <entry><literallayout>mix(&num;ff1e0a, &commat;bg_color, 0.8)</literallayout></entry>
* </row>
* <row>
* <entry>shade(@color, @f)</entry>
* <entry>A lighter or darker variant of @color. @f is a
* floating point number.
* </entry>
* <entry>shade(&commat;fg_color, 0.5)</entry>
* </row>
* <row>
* <entry>lighter(@color)</entry>
* <entry>A lighter variant of @color</entry>
* </row>
* <row>
* <entry>darker(@color)</entry>
* <entry>A darker variant of @color</entry>
* </row>
* </tbody>
* </tgroup>
* </informaltable>
* </refsect2>
* <refsect2 id="gtkcssprovider-gradients">
* <title>Gradients</title>
* <para>
* Linear or radial Gradients can be used as background images.
* </para>
* <para>
* A linear gradient along the line from (@start_x, @start_y) to
* (@end_x, @end_y) is specified using the syntax
* <literallayout>-gtk-gradient (linear,
* @start_x @start_y, @end_x @end_y,
* color-stop (@position, @color),
* ...)</literallayout>
* where @start_x and @end_x can be either a floating point number between
* 0 and 1 or one of the special values 'left', 'right' or 'center', @start_y
* and @end_y can be either a floating point number between 0 and 1 or one
* of the special values 'top', 'bottom' or 'center', @position is a floating
* point number between 0 and 1 and @color is a color expression (see above).
* The color-stop can be repeated multiple times to add more than one color
* stop. 'from (@color)' and 'to (@color)' can be used as abbreviations for
* color stops with position 0 and 1, respectively.
* </para>
* <example>
* <title>A linear gradient</title>
* <inlinegraphic fileref="gradient1.png" format="PNG"/>
* <para>This gradient was specified with
* <literallayout>-gtk-gradient (linear,
* left top, right bottom,
* from(&commat;yellow), to(&commat;blue))</literallayout></para>
* </example>
* <example>
* <title>Another linear gradient</title>
* <inlinegraphic fileref="gradient2.png" format="PNG"/>
* <para>This gradient was specified with
* <literallayout>-gtk-gradient (linear,
* 0 0, 0 1,
* color-stop(0, &commat;yellow),
* color-stop(0.2, &commat;blue),
* color-stop(1, &num;0f0))</literallayout></para>
* </example>
* <para>
* A radial gradient along the two circles defined by (@start_x, @start_y,
* @start_radius) and (@end_x, @end_y, @end_radius) is specified using the
* syntax
* <literallayout>-gtk-gradient (radial,
* @start_x @start_y, @start_radius,
* @end_x @end_y, @end_radius,
* color-stop (@position, @color),
* ...)</literallayout>
* where @start_radius and @end_radius are floating point numbers and
* the other parameters are as before.
* </para>
* <example>
* <title>A radial gradient</title>
* <inlinegraphic fileref="gradient3.png" format="PNG"/>
* <para>This gradient was specified with
* <literallayout>-gtk-gradient (radial,
* center center, 0,
* center center, 1,
* from(&commat;yellow), to(&commat;green))</literallayout></para>
* </example>
* <example>
* <title>Another radial gradient</title>
* <inlinegraphic fileref="gradient4.png" format="PNG"/>
* <para>This gradient was specified with
* <literallayout>-gtk-gradient (radial,
* 0.4 0.4, 0.1,
* 0.6 0.6, 0.7,
* color-stop (0, &num;f00),
* color-stop (0.1, &num;a0f),
* color-stop (0.2, &commat;yellow),
* color-stop (1, &commat;green))</literallayout></para>
* </example>
* </refsect2>
* <refsect2 id="gtkcssprovider-slices">
* <title>Border images</title>
* <para>
* Images can be used in 'slices' for the purpose of creating scalable
* borders.
* </para>
* <inlinegraphic fileref="slices.png" format="PNG"/>
* <para>
* The syntax for specifying border images of this kind is:
* <literallayout>url(@path) @top @right @bottom @left [repeat|stretch]? [repeat|stretch]?</literallayout>
* The sizes of the 'cut off' portions are specified
* with the @top, @right, @bottom and @left parameters.
* The 'middle' sections can be repeated or stretched to create
* the desired effect, by adding the 'repeat' or 'stretch' options after
* the dimensions. If two options are specified, the first one affects
* the horizontal behaviour and the second one the vertical behaviour.
* If only one option is specified, it affects both.
* </para>
* <example>
* <title>A border image</title>
* <inlinegraphic fileref="border1.png" format="PNG"/>
* <para>This border image was specified with
* <literallayout>url("gradient1.png") 10 10 10 10</literallayout>
* </para>
* </example>
* <example>
* <title>A repeating border image</title>
* <inlinegraphic fileref="border2.png" format="PNG"/>
* <para>This border image was specified with
* <literallayout>url("gradient1.png") 10 10 10 10 repeat</literallayout>
* </para>
* </example>
* <example>
* <title>A stretched border image</title>
* <inlinegraphic fileref="border3.png" format="PNG"/>
* <para>This border image was specified with
* <literallayout>url("gradient1.png") 10 10 10 10 stretch</literallayout>
* </para>
* </example>
* </refsect2>
* <refsect2 id="gtkcssprovider-transitions">
* <para>Styles can specify transitions that will be used to create a gradual
* change in the appearance when a widget state changes. The following
* syntax is used to specify transitions:
* <literallayout>@duration [s|ms] [linear|ease|ease-in|ease-out|ease-in-out] [loop]?</literallayout>
* The @duration is the amount of time that the animation will take for
* a complete cycle from start to end. If the loop option is given, the
* animation will be repated until the state changes again.
* The option after the duration determines the transition function from a
* small set of predefined functions.
* <figure><title>Linear transition</title>
* <graphic fileref="linear.png" format="PNG"/>
* </figure>
* <figure><title>Ease transition</title>
* <graphic fileref="ease.png" format="PNG"/>
* </figure>
* <figure><title>Ease-in-out transition</title>
* <graphic fileref="ease-in-out.png" format="PNG"/>
* </figure>
* <figure><title>Ease-in transition</title>
* <graphic fileref="ease-in.png" format="PNG"/>
* </figure>
* <figure><title>Ease-out transition</title>
* <graphic fileref="ease-out.png" format="PNG"/>
* </figure>
* </para>
* </refsect2>
* <refsect2 id="gtkcssprovider-properties">
* <title>Supported properties</title>
* <para>
* Properties are the part that differ the most to common CSS,
* not all properties are supported (some are planned to be
* supported eventually, some others are meaningless or don't
* map intuitively in a widget based environment).
* </para>
* <para>
* There is also a difference in shorthand properties, for
* example in common CSS it is fine to define a font through
* the different @font-family, @font-style, @font-size
* properties, meanwhile in GTK+'s CSS only the canonical
* @font property is supported.
* </para>
* <para>
* The currently supported properties are:
* </para>
* <informaltable>
* <tgroup cols="4">
* <thead>
* <row>
* <entry>Property name</entry>
* <entry>Syntax</entry>
* <entry>Maps to</entry>
* <entry>Examples</entry>
* </row>
* </thead>
* <tbody>
* <row>
* <entry>engine</entry>
* <entry>engine-name</entry>
* <entry>#GtkThemingEngine</entry>
* <entry>engine: clearlooks;
* engine: none; /&ast; use the default (i.e. builtin) engine) &ast;/ </entry>
* </row>
* <row>
* <entry>background-color</entry>
* <entry morerows="2">color (see above)</entry>
* <entry morerows="2">#GdkRGBA</entry>
* <entry morerows="2"><literallayout>background-color: &num;fff;
* color: &amp;color1;
* background-color: shade (&amp;color1, 0.5);
* color: mix (&amp;color1, &num;f0f, 0.8);</literallayout>
* </entry>
* </row>
* <row>
* <entry>color</entry>
* </row>
* <row>
* <entry>border-color</entry>
* </row>
* <row>
* <entry>font</entry>
* <entry>@family [@style] [@size]</entry>
* <entry>#PangoFontDescription</entry>
* <entry>font: Sans 15;</entry>
* </row>
* <row>
* <entry>margin</entry>
* <entry morerows="1"><literallayout>@width
* @vertical_width @horizontal_width
* @top_width @horizontal_width @bottom_width
* @top_width @right_width @bottom_width @left_width</literallayout>
* </entry>
* <entry morerows="1">#GtkBorder</entry>
* <entry morerows="1"><literallayout>margin: 5;
* margin: 5 10;
* margin: 5 10 3;
* margin: 5 10 3 5;</literallayout>
* </entry>
* </row>
* <row>
* <entry>padding</entry>
* </row>
* <row>
* <entry>background-image</entry>
* <entry><literallayout>gradient (see above) or
* url(@path)</literallayout></entry>
* <entry>#cairo_pattern_t</entry>
* <entry><literallayout>-gtk-gradient (linear,
* left top, right top,
* from (&num;fff), to (&num;000));
* -gtk-gradient (linear, 0.0 0.5, 0.5 1.0,
* from (&num;fff),
* color-stop (0.5, &num;f00),
* to (&num;000));
* -gtk-gradient (radial,
* center center, 0.2,
* center center, 0.8,
* color-stop (0.0, &num;fff),
* color-stop (1.0, &num;000));
* url ('background.png');</literallayout>
* </entry>
* </row>
* <row>
* <entry>border-width</entry>
* <entry>integer</entry>
* <entry>#gint</entry>
* <entry>border-width: 5;</entry>
* </row>
* <row>
* <entry>border-radius</entry>
* <entry>integer</entry>
* <entry>#gint</entry>
* <entry>border-radius: 5;</entry>
* </row>
* <row>
* <entry>border-style</entry>
* <entry>[none|solid|inset|outset]</entry>
* <entry>#GtkBorderStyle</entry>
* <entry>border-style: solid;</entry>
* </row>
* <row>
* <entry>border-image</entry>
* <entry><literallayout>border image (see above)</literallayout></entry>
* <entry>internal use only</entry>
* <entry><literallayout>border-image: url("/path/to/image.png") 3 4 3 4 stretch;
* border-image: url("/path/to/image.png") 3 4 4 3 repeat stretch;</literallayout>
* </entry>
* </row>
* <row>
* <entry>transition</entry>
* <entry>transition (see above)</entry>
* <entry>internal use only</entry>
* <entry><literallayout>transition: 150ms ease-in-out;
* transition: 1s linear loop;</literallayout>
* </entry>
* </row>
* <row>
* <entry>gtk-key-bindings</entry>
* <entry>binding set name list</entry>
* <entry>internal use only</entry>
* <entry><literallayout>gtk-bindings: binding1, binding2, ...;</literallayout>
* </entry>
* </row>
* </tbody>
* </tgroup>
* </informaltable>
* <para>
* GtkThemingEngines can register their own, engine-specific style properties
* with the function gtk_theming_engine_register_property(). These properties
* can be set in CSS like other properties, using a name of the form
* <literallayout>-<replaceable>namespace</replaceable>-<replaceable>name</replaceable></literallayout>, where <replaceable>namespace</replaceable> is typically
* the name of the theming engine, and <replaceable>name</replaceable> is the
* name of the property. Style properties that have been registered by widgets
* using gtk_widget_class_install_style_property() can also be set in this
* way, using the widget class name for <replaceable>namespace</replaceable>.
* </para>
* <example>
* <title>Using engine-specific style properties</title>
* <programlisting>
* * {
* engine: clearlooks;
* border-radius: 4;
* -GtkPaned-handle-size: 6;
* -clearlooks-colorize-scrollbar: false;
* }
* </programlisting>
* </example>
* </refsect2>
*/
typedef struct SelectorStyleInfo SelectorStyleInfo;
typedef struct _GtkCssScanner GtkCssScanner;
typedef enum ParserScope ParserScope;
typedef enum ParserSymbol ParserSymbol;
struct SelectorStyleInfo
{
GtkCssSelector *selector;
GHashTable *style;
};
struct _GtkCssScanner
{
GtkCssProvider *provider;
GtkCssParser *parser;
GtkCssScanner *parent;
GFile *file;
GFile *base;
GSList *state;
GSList *cur_selectors;
GHashTable *cur_properties;
};
struct _GtkCssProviderPrivate
{
GScanner *scanner;
GHashTable *symbolic_colors;
GPtrArray *selectors_info;
};
enum ParserScope {
SCOPE_SELECTOR,
SCOPE_PSEUDO_CLASS,
SCOPE_NTH_CHILD,
SCOPE_DECLARATION,
SCOPE_VALUE,
SCOPE_BINDING_SET
};
/* Extend GtkStateType, since these
* values are also used as symbols
*/
enum ParserSymbol {
/* Scope: pseudo-class */
SYMBOL_NTH_CHILD = GTK_STATE_FOCUSED + 1,
SYMBOL_FIRST_CHILD,
SYMBOL_LAST_CHILD,
SYMBOL_SORTED_CHILD,
/* Scope: nth-child */
SYMBOL_NTH_CHILD_EVEN,
SYMBOL_NTH_CHILD_ODD,
SYMBOL_NTH_CHILD_FIRST,
SYMBOL_NTH_CHILD_LAST
};
enum {
PARSING_ERROR,
LAST_SIGNAL
};
static guint css_provider_signals[LAST_SIGNAL] = { 0 };
static void gtk_css_provider_finalize (GObject *object);
static void gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface);
static gboolean
gtk_css_provider_load_internal (GtkCssProvider *css_provider,
GtkCssScanner *scanner,
GFile *file,
const char *data,
gsize length,
GError **error);
GQuark
gtk_css_provider_error_quark (void)
{
return g_quark_from_static_string ("gtk-css-provider-error-quark");
}
G_DEFINE_TYPE_EXTENDED (GtkCssProvider, gtk_css_provider, G_TYPE_OBJECT, 0,
G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER,
gtk_css_style_provider_iface_init));
static void
gtk_css_provider_parsing_error (GtkCssProvider *provider,
const gchar *path,
guint line,
guint position,
const GError * error)
{
/* Only emit a warning when we have no error handlers. This is our
* default handlers. And in this case erroneous CSS files are a bug
* and should be fixed.
* Note that these warnings can also be triggered by a broken theme
* that people installed from some weird location on the internets.
*/
if (!g_signal_has_handler_pending (provider,
css_provider_signals[PARSING_ERROR],
0,
TRUE))
{
g_warning ("Theme parsing error: %s:%u:%u: %s", path ? path : "<unknown>", line, position, error->message);
}
}
static void
gtk_css_provider_class_init (GtkCssProviderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
/**
* GtkCssProvider::parsing-error:
* @provider: the provider that had a parsing error
* @path: path to the parsed file or %NULL if the file cannot be
* identified or the data was not loaded from a file
* @line: line in the file or data or 0 if unknown
* @position: offset into the current line or 0 if unknown or the
* whole line is affected
* @error: The parsing error
*
* Signals that a parsing error occured. the @path, @line and @position
* describe the actual location of the error as accurately as possible.
*
* Parsing errors are never fatal, so the parsing will resume after
* the error. Errors may however cause parts of the given
* data or even all of it to not be parsed at all. So it is a useful idea
* to check that the parsing succeeds by connecting to this signal.
*
* Note that this signal may be emitted at any time as the css provider
* may opt to defer parsing parts or all of the input to a later time
* than when a loading function was called.
*/
css_provider_signals[PARSING_ERROR] =
g_signal_new (I_("parsing-error"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCssProviderClass, parsing_error),
NULL, NULL,
_gtk_marshal_VOID__STRING_UINT_UINT_BOXED,
G_TYPE_NONE, 4,
G_TYPE_STRING, G_TYPE_UINT, G_TYPE_UINT, G_TYPE_ERROR);
object_class->finalize = gtk_css_provider_finalize;
klass->parsing_error = gtk_css_provider_parsing_error;
g_type_class_add_private (object_class, sizeof (GtkCssProviderPrivate));
}
static void
gtk_css_provider_take_error_full (GtkCssProvider *provider,
GFile *file,
guint line,
guint position,
GError *error)
{
char *filename;
if (file)
filename = g_file_get_path (file);
else
filename = NULL;
g_signal_emit (provider, css_provider_signals[PARSING_ERROR], 0,
filename, line, position, error);
g_free (filename);
g_error_free (error);
}
static SelectorStyleInfo *
selector_style_info_new (GtkCssSelector *selector)
{
SelectorStyleInfo *info;
info = g_slice_new0 (SelectorStyleInfo);
info->selector = selector;
return info;
}
static void
selector_style_info_free (SelectorStyleInfo *info)
{
if (info->style)
g_hash_table_unref (info->style);
if (info->selector)
_gtk_css_selector_free (info->selector);
g_slice_free (SelectorStyleInfo, info);
}
static void
selector_style_info_set_style (SelectorStyleInfo *info,
GHashTable *style)
{
if (info->style)
g_hash_table_unref (info->style);
if (style)
info->style = g_hash_table_ref (style);
else
info->style = NULL;
}
static void
property_value_free (GValue *value)
{
if (G_IS_VALUE (value))
g_value_unset (value);
g_slice_free (GValue, value);
}
static void
gtk_css_scanner_reset (GtkCssScanner *scanner)
{
g_slist_free (scanner->state);
scanner->state = NULL;
g_slist_free_full (scanner->cur_selectors, (GDestroyNotify) _gtk_css_selector_free);
scanner->cur_selectors = NULL;
if (scanner->cur_properties)
g_hash_table_unref (scanner->cur_properties);
scanner ->cur_properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) property_value_free);
}
static void
gtk_css_scanner_destroy (GtkCssScanner *scanner)
{
gtk_css_scanner_reset (scanner);
g_object_unref (scanner->provider);
if (scanner->file)
g_object_unref (scanner->file);
g_object_unref (scanner->base);
g_hash_table_destroy (scanner->cur_properties);
_gtk_css_parser_free (scanner->parser);
g_slice_free (GtkCssScanner, scanner);
}
static void
gtk_css_scanner_parser_error (GtkCssParser *parser,
const GError *error,
gpointer user_data)
{
GtkCssScanner *scanner = user_data;
gtk_css_provider_take_error_full (scanner->provider,
scanner->file,
_gtk_css_parser_get_line (scanner->parser),
_gtk_css_parser_get_position (scanner->parser),
g_error_copy (error));
}
static GtkCssScanner *
gtk_css_scanner_new (GtkCssProvider *provider,
GtkCssScanner *parent,
GFile *file,
const gchar *data,
gsize length)
{
GtkCssScanner *scanner;
g_assert (data[length] == 0);
scanner = g_slice_new0 (GtkCssScanner);
g_object_ref (provider);
scanner->provider = provider;
scanner->parent = parent;
if (file)
{
scanner->file = g_object_ref (file);
scanner->base = g_file_get_parent (file);
}
else
{
char *dir = g_get_current_dir ();
scanner->base = g_file_new_for_path (dir);
g_free (dir);
}
scanner->cur_properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) property_value_free);
scanner->parser = _gtk_css_parser_new (data,
gtk_css_scanner_parser_error,
scanner);
return scanner;
}
static GFile *
gtk_css_scanner_get_base_url (GtkCssScanner *scanner)
{
return scanner->base;
}
static gboolean
gtk_css_scanner_would_recurse (GtkCssScanner *scanner,
GFile *file)
{
while (scanner)
{
if (scanner->file && g_file_equal (scanner->file, file))
return TRUE;
scanner = scanner->parent;
}
return FALSE;
}
static void
gtk_css_provider_init (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv = G_TYPE_INSTANCE_GET_PRIVATE (css_provider,
GTK_TYPE_CSS_PROVIDER,
GtkCssProviderPrivate);
priv->selectors_info = g_ptr_array_new_with_free_func ((GDestroyNotify) selector_style_info_free);
priv->symbolic_colors = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) gtk_symbolic_color_unref);
}
typedef struct StylePriorityInfo StylePriorityInfo;
struct StylePriorityInfo
{
GHashTable *style;
GtkStateFlags state;
};
static GArray *
css_provider_get_selectors (GtkCssProvider *css_provider,
GtkWidgetPath *path)
{
GtkCssProviderPrivate *priv;
GArray *priority_info;
guint i;
priv = css_provider->priv;
priority_info = g_array_new (FALSE, FALSE, sizeof (StylePriorityInfo));
for (i = 0; i < priv->selectors_info->len; i++)
{
SelectorStyleInfo *info;
StylePriorityInfo new;
info = g_ptr_array_index (priv->selectors_info, i);
if (_gtk_css_selector_matches (info->selector, path))
{
new.style = info->style;
new.state = _gtk_css_selector_get_state_flags (info->selector);
g_array_append_val (priority_info, new);
}
}
return priority_info;
}
static void
css_provider_dump_symbolic_colors (GtkCssProvider *css_provider,
GtkStyleProperties *props)
{
GtkCssProviderPrivate *priv;
GHashTableIter iter;
gpointer key, value;
priv = css_provider->priv;
g_hash_table_iter_init (&iter, priv->symbolic_colors);
while (g_hash_table_iter_next (&iter, &key, &value))
{
const gchar *name;
GtkSymbolicColor *color;
name = key;
color = value;
gtk_style_properties_map_color (props, name, color);
}
}
static GtkStyleProperties *
gtk_css_provider_get_style (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkCssProvider *css_provider;
GtkStyleProperties *props;
GArray *priority_info;
guint i;
css_provider = GTK_CSS_PROVIDER (provider);
props = gtk_style_properties_new ();
css_provider_dump_symbolic_colors (css_provider, props);
priority_info = css_provider_get_selectors (css_provider, path);
for (i = 0; i < priority_info->len; i++)
{
StylePriorityInfo *info;
GHashTableIter iter;
gpointer key, value;
info = &g_array_index (priority_info, StylePriorityInfo, i);
g_hash_table_iter_init (&iter, info->style);
while (g_hash_table_iter_next (&iter, &key, &value))
{
gchar *prop = key;
/* Properties starting with '-' may be both widget style properties
* or custom properties from the theming engine, so check whether
* the type is registered or not.
*/
if (prop[0] == '-' &&
!gtk_style_properties_lookup_property (prop, NULL, NULL))
continue;
gtk_style_properties_set_property (props, key, info->state, value);
}
}
g_array_free (priority_info, TRUE);
return props;
}
static gboolean
gtk_css_provider_get_style_property (GtkStyleProvider *provider,
GtkWidgetPath *path,
GtkStateFlags state,
GParamSpec *pspec,
GValue *value)
{
GtkCssProvider *css_provider = GTK_CSS_PROVIDER (provider);
GtkCssProviderPrivate *priv = css_provider->priv;
const GValue *val;
gboolean found = FALSE;
gchar *prop_name;
gint i;
prop_name = g_strdup_printf ("-%s-%s",
g_type_name (pspec->owner_type),
pspec->name);
for (i = priv->selectors_info->len - 1; i >= 0; i--)
{
SelectorStyleInfo *info;
GtkStateFlags selector_state;
info = g_ptr_array_index (priv->selectors_info, i);
if (!_gtk_css_selector_matches (info->selector, path))
continue;
selector_state = _gtk_css_selector_get_state_flags (info->selector);
val = g_hash_table_lookup (info->style, prop_name);
if (val &&
(selector_state == 0 ||
selector_state == state ||
((selector_state & state) != 0 &&
(selector_state & ~(state)) == 0)))
{
GError *error = NULL;
found = _gtk_css_value_from_string (value,
NULL,
g_value_get_string (val),
&error);
if (found)
break;
/* error location should be _way_ better */
gtk_css_provider_take_error_full (GTK_CSS_PROVIDER (provider),
NULL,
0, 0,
error);
}
}
g_free (prop_name);
return found;
}
static void
gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface)
{
iface->get_style = gtk_css_provider_get_style;
iface->get_style_property = gtk_css_provider_get_style_property;
}
static void
gtk_css_provider_finalize (GObject *object)
{
GtkCssProvider *css_provider;
GtkCssProviderPrivate *priv;
css_provider = GTK_CSS_PROVIDER (object);
priv = css_provider->priv;
g_ptr_array_free (priv->selectors_info, TRUE);
if (priv->symbolic_colors)
g_hash_table_destroy (priv->symbolic_colors);
G_OBJECT_CLASS (gtk_css_provider_parent_class)->finalize (object);
}
/**
* gtk_css_provider_new:
*
* Returns a newly created #GtkCssProvider.
*
* Returns: A new #GtkCssProvider
**/
GtkCssProvider *
gtk_css_provider_new (void)
{
return g_object_new (GTK_TYPE_CSS_PROVIDER, NULL);
}
static void
gtk_css_provider_take_error (GtkCssProvider *provider,
GtkCssScanner *scanner,
GError *error)
{
gtk_css_provider_take_error_full (provider,
scanner->file,
_gtk_css_parser_get_line (scanner->parser),
_gtk_css_parser_get_position (scanner->parser),
error);
}
static void
gtk_css_provider_error_literal (GtkCssProvider *provider,
GtkCssScanner *scanner,
GQuark domain,
gint code,
const char *message)
{
gtk_css_provider_take_error (provider,
scanner,
g_error_new_literal (domain, code, message));
}
static void
gtk_css_provider_error (GtkCssProvider *provider,
GtkCssScanner *scanner,
GQuark domain,
gint code,
const char *format,
...) G_GNUC_PRINTF (5, 6);
static void
gtk_css_provider_error (GtkCssProvider *provider,
GtkCssScanner *scanner,
GQuark domain,
gint code,
const char *format,
...)
{
GError *error;
va_list args;
va_start (args, format);
error = g_error_new_valist (domain, code, format, args);
va_end (args);
gtk_css_provider_take_error (provider, scanner, error);
}
static void
gtk_css_provider_invalid_token (GtkCssProvider *provider,
GtkCssScanner *scanner,
const char *expected)
{
gtk_css_provider_error (provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"expected a valid %s", expected);
}
static void
css_provider_commit (GtkCssProvider *css_provider,
GSList *selectors,
GHashTable *properties)
{
GtkCssProviderPrivate *priv;
GSList *l;
priv = css_provider->priv;
if (g_hash_table_size (properties) == 0)
{
g_slist_free_full (selectors, (GDestroyNotify) _gtk_css_selector_free);
g_hash_table_unref (properties);
return;
}
for (l = selectors; l; l = l->next)
{
GtkCssSelector *selector = l->data;
SelectorStyleInfo *info;
info = selector_style_info_new (selector);
selector_style_info_set_style (info, properties);
g_ptr_array_add (priv->selectors_info, info);
}
g_hash_table_unref (properties);
}
static void
resolve_binding_sets (const gchar *value_str,
GValue *value)
{
GPtrArray *array;
gchar **bindings, **str;
bindings = g_strsplit (value_str, ",", -1);
array = g_ptr_array_new ();
for (str = bindings; *str; str++)
{
GtkBindingSet *binding_set;
binding_set = gtk_binding_set_find (g_strstrip (*str));
if (!binding_set)
continue;
g_ptr_array_add (array, binding_set);
}
g_value_take_boxed (value, array);
g_strfreev (bindings);
}
static void
gtk_css_provider_reset (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
if (priv->selectors_info->len > 0)
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
}
static void
gtk_css_provider_propagate_error (GtkCssProvider *provider,
const gchar *path,
guint line,
guint position,
const GError *error,
GError **propagate_to)
{
/* we already set an error. And we'd like to keep the first one */
if (*propagate_to)
return;
*propagate_to = g_error_copy (error);
g_prefix_error (propagate_to, "%s:%u:%u: ", path ? path : "<unknown>", line, position);
}
static void
parse_import (GtkCssScanner *scanner)
{
GFile *file;
char *uri;
uri = _gtk_css_parser_read_uri (scanner->parser);
if (uri == NULL)
{
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
return;
}
file = g_file_resolve_relative_path (gtk_css_scanner_get_base_url (scanner), uri);
g_free (uri);
if (gtk_css_scanner_would_recurse (scanner, file))
{
char *path = g_file_get_path (file);
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_IMPORT,
"Loading '%s' would recurse",
path);
g_free (path);
}
else
{
gtk_css_provider_load_internal (scanner->provider,
scanner,
file,
NULL, 0,
NULL);
}
if (!_gtk_css_parser_try (scanner->parser, ";", TRUE))
{
g_object_unref (file);
gtk_css_provider_invalid_token (scanner->provider, scanner, "semicolon");
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
return;
}
g_object_unref (file);
}
static void
parse_color_definition (GtkCssScanner *scanner)
{
GtkSymbolicColor *symbolic;
char *name;
name = _gtk_css_parser_try_name (scanner->parser, TRUE);
if (name == NULL)
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Not a valid color name");
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
return;
}
symbolic = _gtk_css_parser_read_symbolic_color (scanner->parser);
if (symbolic == NULL)
{
g_free (name);
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
return;
}
if (!_gtk_css_parser_try (scanner->parser, ";", TRUE))
{
g_free (name);
gtk_symbolic_color_unref (symbolic);
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Missing semicolon at end of color definition");
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
return;
}
g_hash_table_insert (scanner->provider->priv->symbolic_colors, name, symbolic);
}
static void
parse_binding_set (GtkCssScanner *scanner)
{
GtkBindingSet *binding_set;
char *name;
name = _gtk_css_parser_try_ident (scanner->parser, TRUE);
if (name == NULL)
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected name for binding set");
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
goto skip_semicolon;
}
binding_set = gtk_binding_set_find (name);
if (!binding_set)
{
binding_set = gtk_binding_set_new (name);
binding_set->parsed = TRUE;
}
g_free (name);
if (!_gtk_css_parser_try (scanner->parser, "{", TRUE))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected '{' for binding set");
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
goto skip_semicolon;
}
while (!_gtk_css_parser_is_eof (scanner->parser) &&
!_gtk_css_parser_begins_with (scanner->parser, '}'))
{
name = _gtk_css_parser_read_value (scanner->parser);
if (name == NULL)
{
_gtk_css_parser_resync (scanner->parser, TRUE, '}');
continue;
}
gtk_binding_entry_add_signal_from_string (binding_set, name);
g_free (name);
if (!_gtk_css_parser_try (scanner->parser, ";", TRUE))
{
if (!_gtk_css_parser_begins_with (scanner->parser, '}') &&
!_gtk_css_parser_is_eof (scanner->parser))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected semicolon");
_gtk_css_parser_resync (scanner->parser, TRUE, '}');
}
}
}
if (!_gtk_css_parser_try (scanner->parser, "}", TRUE))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"expected '}' after declarations");
if (!_gtk_css_parser_is_eof (scanner->parser))
_gtk_css_parser_resync (scanner->parser, FALSE, 0);
}
skip_semicolon:
if (_gtk_css_parser_try (scanner->parser, ";", TRUE))
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_DEPRECATED,
"Nonstandard semicolon at end of binding set");
}
static void
parse_at_keyword (GtkCssScanner *scanner)
{
if (_gtk_css_parser_try (scanner->parser, "@import", TRUE))
parse_import (scanner);
else if (_gtk_css_parser_try (scanner->parser, "@define-color", TRUE))
parse_color_definition (scanner);
else if (_gtk_css_parser_try (scanner->parser, "@binding-set", TRUE))
parse_binding_set (scanner);
else
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"unknown @ rule");
_gtk_css_parser_resync (scanner->parser, TRUE, 0);
}
}
static gboolean
parse_selector_class (GtkCssScanner *scanner, GArray *classes)
{
GQuark qname;
char *name;
name = _gtk_css_parser_try_name (scanner->parser, FALSE);
if (name == NULL)
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected a valid name for class");
return FALSE;
}
qname = g_quark_from_string (name);
g_array_append_val (classes, qname);
g_free (name);
return TRUE;
}
static gboolean
parse_selector_name (GtkCssScanner *scanner, GArray *names)
{
GQuark qname;
char *name;
name = _gtk_css_parser_try_name (scanner->parser, FALSE);
if (name == NULL)
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected a valid name for id");
return FALSE;
}
qname = g_quark_from_string (name);
g_array_append_val (names, qname);
g_free (name);
return TRUE;
}
static gboolean
parse_selector_pseudo_class (GtkCssScanner *scanner,
GtkRegionFlags *region_to_modify,
GtkStateFlags *state_to_modify)
{
struct {
const char *name;
GtkRegionFlags region_flag;
GtkStateFlags state_flag;
} pseudo_classes[] = {
{ "first", GTK_REGION_FIRST, 0 },
{ "last", GTK_REGION_LAST, 0 },
{ "sorted", GTK_REGION_SORTED, 0 },
{ "active", 0, GTK_STATE_FLAG_ACTIVE },
{ "prelight", 0, GTK_STATE_FLAG_PRELIGHT },
{ "hover", 0, GTK_STATE_FLAG_PRELIGHT },
{ "selected", 0, GTK_STATE_FLAG_SELECTED },
{ "insensitive", 0, GTK_STATE_FLAG_INSENSITIVE },
{ "inconsistent", 0, GTK_STATE_FLAG_INCONSISTENT },
{ "focused", 0, GTK_STATE_FLAG_FOCUSED },
{ "focus", 0, GTK_STATE_FLAG_FOCUSED },
{ NULL, }
}, nth_child_classes[] = {
{ "first", GTK_REGION_FIRST, 0 },
{ "last", GTK_REGION_LAST, 0 },
{ "even", GTK_REGION_EVEN, 0 },
{ "odd", GTK_REGION_ODD, 0 },
{ NULL, }
}, *classes;
guint i;
char *name;
name = _gtk_css_parser_try_ident (scanner->parser, FALSE);
if (name == NULL)
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Missing name of pseudo-class");
return FALSE;
}
if (_gtk_css_parser_try (scanner->parser, "(", TRUE))
{
char *function = name;
name = _gtk_css_parser_try_ident (scanner->parser, TRUE);
if (!_gtk_css_parser_try (scanner->parser, ")", FALSE))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Missing closing bracket for pseudo-class");
return FALSE;
}
if (g_ascii_strcasecmp (function, "nth-child") != 0)
{
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
"Unknown pseudo-class '%s(%s)'", function, name ? name : "");
g_free (function);
g_free (name);
return FALSE;
}
g_free (function);
if (name == NULL)
{
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
"nth-child() requires an argument");
return FALSE;
}
classes = nth_child_classes;
}
else
classes = pseudo_classes;
for (i = 0; classes[i].name != NULL; i++)
{
if (g_ascii_strcasecmp (name, classes[i].name) == 0)
{
if ((*region_to_modify & classes[i].region_flag) ||
(*state_to_modify & classes[i].state_flag))
{
if (classes == nth_child_classes)
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Duplicate pseudo-class 'nth-child(%s)'", name);
else
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Duplicate pseudo-class '%s'", name);
}
*region_to_modify |= classes[i].region_flag;
*state_to_modify |= classes[i].state_flag;
g_free (name);
return TRUE;
}
}
if (classes == nth_child_classes)
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
"Unknown pseudo-class 'nth-child(%s)'", name);
else
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
"Unknown pseudo-class '%s'", name);
g_free (name);
return FALSE;
}
static gboolean
parse_simple_selector (GtkCssScanner *scanner,
char **name,
GArray *ids,
GArray *classes,
GtkRegionFlags *pseudo_classes,
GtkStateFlags *state)
{
gboolean parsed_something;
*name = _gtk_css_parser_try_ident (scanner->parser, FALSE);
if (*name)
parsed_something = TRUE;
else
parsed_something = _gtk_css_parser_try (scanner->parser, "*", FALSE);
do {
if (_gtk_css_parser_try (scanner->parser, "#", FALSE))
{
if (!parse_selector_name (scanner, ids))
return FALSE;
}
else if (_gtk_css_parser_try (scanner->parser, ".", FALSE))
{
if (!parse_selector_class (scanner, classes))
return FALSE;
}
else if (_gtk_css_parser_try (scanner->parser, ":", FALSE))
{
if (!parse_selector_pseudo_class (scanner, pseudo_classes, state))
return FALSE;
}
else if (!parsed_something)
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected a valid selector");
return FALSE;
}
else
break;
parsed_something = TRUE;
}
while (!_gtk_css_parser_is_eof (scanner->parser));
_gtk_css_parser_skip_whitespace (scanner->parser);
return TRUE;
}
static GtkCssSelector *
parse_selector (GtkCssScanner *scanner)
{
GtkCssSelector *selector = NULL;
do {
char *name = NULL;
GArray *ids = g_array_new (TRUE, FALSE, sizeof (GQuark));
GArray *classes = g_array_new (TRUE, FALSE, sizeof (GQuark));
GtkRegionFlags pseudo_classes = 0;
GtkStateFlags state = 0;
GtkCssCombinator combine = GTK_CSS_COMBINE_DESCANDANT;
if (selector)
{
if (_gtk_css_parser_try (scanner->parser, ">", TRUE))
combine = GTK_CSS_COMBINE_CHILD;
}
if (!parse_simple_selector (scanner, &name, ids, classes, &pseudo_classes, &state))
{
g_array_free (ids, TRUE);
g_array_free (classes, TRUE);
if (selector)
_gtk_css_selector_free (selector);
return NULL;
}
selector = _gtk_css_selector_new (selector,
combine,
name,
(GQuark *) g_array_free (ids, ids->len == 0),
(GQuark *) g_array_free (classes, classes->len == 0),
pseudo_classes,
state);
g_free (name);
}
while (!_gtk_css_parser_is_eof (scanner->parser) &&
!_gtk_css_parser_begins_with (scanner->parser, ',') &&
!_gtk_css_parser_begins_with (scanner->parser, '{'));
return selector;
}
static GSList *
parse_selector_list (GtkCssScanner *scanner)
{
GSList *selectors = NULL;
do {
GtkCssSelector *select = parse_selector (scanner);
if (select == NULL)
{
g_slist_free_full (selectors, (GDestroyNotify) _gtk_css_selector_free);
_gtk_css_parser_resync (scanner->parser, FALSE, 0);
return NULL;
}
selectors = g_slist_prepend (selectors, select);
}
while (_gtk_css_parser_try (scanner->parser, ",", TRUE));
return selectors;
}
static void
parse_declaration (GtkCssScanner *scanner, GHashTable *properties)
{
GtkStylePropertyParser parse_func = NULL;
GParamSpec *pspec = NULL;
char *name, *value_str;
name = _gtk_css_parser_try_ident (scanner->parser, TRUE);
if (name == NULL)
goto check_for_semicolon;
if (!gtk_style_properties_lookup_property (name, &parse_func, &pspec) &&
name[0] != '-')
{
gtk_css_provider_error (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_NAME,
"'%s' is not a valid property name",
name);
_gtk_css_parser_resync (scanner->parser, TRUE, '}');
g_free (name);
return;
}
if (!_gtk_css_parser_try (scanner->parser, ":", TRUE))
{
gtk_css_provider_invalid_token (scanner->provider, scanner, "':'");
_gtk_css_parser_resync (scanner->parser, TRUE, '}');
g_free (name);
return;
}
value_str = _gtk_css_parser_read_value (scanner->parser);
if (value_str == NULL)
{
_gtk_css_parser_resync (scanner->parser, TRUE, '}');
g_free (name);
return;
}
if (pspec)
{
GValue *val;
val = g_slice_new0 (GValue);
g_value_init (val, pspec->value_type);
if (strcmp (value_str, "none") == 0)
{
/* Insert the default value, so it has an opportunity
* to override other style providers when merged
*/
g_param_value_set_default (pspec, val);
g_hash_table_insert (properties, name, val);
}
else if (strcmp (name, "gtk-key-bindings") == 0)
{
/* Private property holding the binding sets */
resolve_binding_sets (value_str, val);
g_hash_table_insert (properties, name, val);
}
else if (parse_func)
{
GError *error = NULL;
if ((*parse_func) (value_str, val, &error))
g_hash_table_insert (properties, name, val);
else
gtk_css_provider_take_error (scanner->provider, scanner, error);
}
else
{
GError *error = NULL;
if (_gtk_css_value_from_string (val,
gtk_css_scanner_get_base_url (scanner),
value_str,
&error))
{
g_hash_table_insert (properties, name, val);
}
else
{
g_value_unset (val);
g_slice_free (GValue, val);
g_free (name);
gtk_css_provider_take_error (scanner->provider, scanner, error);
}
}
}
else if (name[0] == '-')
{
GValue *val;
val = g_slice_new0 (GValue);
g_value_init (val, G_TYPE_STRING);
g_value_set_string (val, value_str);
g_hash_table_insert (properties, name, val);
}
else
g_free (name);
g_free (value_str);
check_for_semicolon:
if (!_gtk_css_parser_try (scanner->parser, ";", TRUE))
{
if (!_gtk_css_parser_begins_with (scanner->parser, '}') &&
!_gtk_css_parser_is_eof (scanner->parser))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"Expected semicolon");
_gtk_css_parser_resync (scanner->parser, TRUE, '}');
}
}
}
static GHashTable *
parse_declarations (GtkCssScanner *scanner)
{
GHashTable *properties;
properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) property_value_free);
while (!_gtk_css_parser_is_eof (scanner->parser) &&
!_gtk_css_parser_begins_with (scanner->parser, '}'))
{
parse_declaration (scanner, properties);
}
return properties;
}
static void
parse_ruleset (GtkCssScanner *scanner)
{
GSList *selectors;
GHashTable *properties;
selectors = parse_selector_list (scanner);
if (selectors == NULL)
return;
if (!_gtk_css_parser_try (scanner->parser, "{", TRUE))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"expected '{' after selectors");
_gtk_css_parser_resync (scanner->parser, FALSE, 0);
g_slist_free_full (selectors, (GDestroyNotify) _gtk_css_selector_free);
return;
}
properties = parse_declarations (scanner);
if (!_gtk_css_parser_try (scanner->parser, "}", TRUE))
{
gtk_css_provider_error_literal (scanner->provider,
scanner,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_SYNTAX,
"expected '}' after declarations");
if (!_gtk_css_parser_is_eof (scanner->parser))
{
_gtk_css_parser_resync (scanner->parser, FALSE, 0);
g_slist_free_full (selectors, (GDestroyNotify) _gtk_css_selector_free);
if (properties)
g_hash_table_unref (properties);
return;
}
}
if (properties)
css_provider_commit (scanner->provider, selectors, properties);
else
g_slist_free_full (selectors, (GDestroyNotify) _gtk_css_selector_free);
}
static void
parse_statement (GtkCssScanner *scanner)
{
if (_gtk_css_parser_begins_with (scanner->parser, '@'))
parse_at_keyword (scanner);
else
parse_ruleset (scanner);
}
static void
parse_stylesheet (GtkCssScanner *scanner)
{
_gtk_css_parser_skip_whitespace (scanner->parser);
while (!_gtk_css_parser_is_eof (scanner->parser))
{
if (_gtk_css_parser_try (scanner->parser, "<!--", TRUE) ||
_gtk_css_parser_try (scanner->parser, "-->", TRUE))
continue;
parse_statement (scanner);
}
}
static int
gtk_css_provider_compare_rule (gconstpointer a_,
gconstpointer b_)
{
const SelectorStyleInfo *a = *(const SelectorStyleInfo **) a_;
const SelectorStyleInfo *b = *(const SelectorStyleInfo **) b_;
int compare;
compare = _gtk_css_selector_compare (a->selector, b->selector);
if (compare != 0)
return compare;
/* compare pointers in array to ensure a stable sort */
if (a_ < b_)
return -1;
if (a_ > b_)
return 1;
return 0;
}
static void
gtk_css_provider_postprocess (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv = css_provider->priv;
g_ptr_array_sort (priv->selectors_info, gtk_css_provider_compare_rule);
}
static gboolean
gtk_css_provider_load_internal (GtkCssProvider *css_provider,
GtkCssScanner *parent,
GFile *file,
const char *data,
gsize length,
GError **error)
{
GtkCssScanner *scanner;
gulong error_handler;
char *free_data;
if (error)
error_handler = g_signal_connect (css_provider,
"parsing-error",
G_CALLBACK (gtk_css_provider_propagate_error),
error);
else
error_handler = 0; /* silence gcc */
if (data == NULL)
{
GError *load_error = NULL;
if (g_file_load_contents (file, NULL,
&free_data, &length,
NULL, &load_error))
{
data = free_data;
}
else
{
if (parent)
{
gtk_css_provider_error (css_provider,
parent,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_IMPORT,
"Failed to import: %s",
load_error->message);
g_error_free (load_error);
}
else
{
gtk_css_provider_take_error_full (css_provider,
file,
0, 0,
load_error);
}
}
}
else
free_data = NULL;
if (data)
{
scanner = gtk_css_scanner_new (css_provider, parent, file, data, length);
parse_stylesheet (scanner);
gtk_css_scanner_destroy (scanner);
if (parent == NULL)
gtk_css_provider_postprocess (css_provider);
}
if (error)
{
g_signal_handler_disconnect (css_provider, error_handler);
if (*error)
{
/* We clear all contents from the provider for backwards compat reasons */
gtk_css_provider_reset (css_provider);
return FALSE;
}
}
return TRUE;
}
/**
* gtk_css_provider_load_from_data:
* @css_provider: a #GtkCssProvider
* @data: CSS data loaded in memory
* @length: the length of @data in bytes, or -1 for NUL terminated strings
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Loads @data into @css_provider, making it clear any previously loaded
* information.
*
* Returns: %TRUE if the data could be loaded.
**/
gboolean
gtk_css_provider_load_from_data (GtkCssProvider *css_provider,
const gchar *data,
gssize length,
GError **error)
{
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (data != NULL, FALSE);
if (length < 0)
length = strlen (data);
gtk_css_provider_reset (css_provider);
return gtk_css_provider_load_internal (css_provider, NULL, NULL, data, length, error);
}
/**
* gtk_css_provider_load_from_file:
* @css_provider: a #GtkCssProvider
* @file: #GFile pointing to a file to load
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Loads the data contained in @file into @css_provider, making it
* clear any previously loaded information.
*
* Returns: %TRUE if the data could be loaded.
**/
gboolean
gtk_css_provider_load_from_file (GtkCssProvider *css_provider,
GFile *file,
GError **error)
{
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (G_IS_FILE (file), FALSE);
gtk_css_provider_reset (css_provider);
return gtk_css_provider_load_internal (css_provider, NULL, file, NULL, 0, error);
}
/**
* gtk_css_provider_load_from_path:
* @css_provider: a #GtkCssProvider
* @path: the path of a filename to load, in the GLib filename encoding
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Loads the data contained in @path into @css_provider, making it clear
* any previously loaded information.
*
* Returns: %TRUE if the data could be loaded.
**/
gboolean
gtk_css_provider_load_from_path (GtkCssProvider *css_provider,
const gchar *path,
GError **error)
{
GFile *file;
gboolean result;
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
file = g_file_new_for_path (path);
result = gtk_css_provider_load_from_file (css_provider, file, error);
g_object_unref (file);
return result;
}
/**
* gtk_css_provider_get_default:
*
* Returns the provider containing the style settings used as a
* fallback for all widgets.
*
* Returns: (transfer none): The provider used for fallback styling.
* This memory is owned by GTK+, and you must not free it.
**/
GtkCssProvider *
gtk_css_provider_get_default (void)
{
static GtkCssProvider *provider;
if (G_UNLIKELY (!provider))
{
const gchar *str =
"@define-color fg_color #000; \n"
"@define-color bg_color #dcdad5; \n"
"@define-color text_color #000; \n"
"@define-color base_color #fff; \n"
"@define-color selected_bg_color #4b6983; \n"
"@define-color selected_fg_color #fff; \n"
"@define-color tooltip_bg_color #eee1b3; \n"
"@define-color tooltip_fg_color #000; \n"
"@define-color placeholder_text_color #808080; \n"
"\n"
"@define-color info_fg_color rgb (181, 171, 156);\n"
"@define-color info_bg_color rgb (252, 252, 189);\n"
"@define-color warning_fg_color rgb (173, 120, 41);\n"
"@define-color warning_bg_color rgb (250, 173, 61);\n"
"@define-color question_fg_color rgb (97, 122, 214);\n"
"@define-color question_bg_color rgb (138, 173, 212);\n"
"@define-color error_fg_color rgb (166, 38, 38);\n"
"@define-color error_bg_color rgb (237, 54, 54);\n"
"\n"
"* {\n"
" background-color: @bg_color;\n"
" color: @fg_color;\n"
" border-color: shade (@bg_color, 0.6);\n"
" padding: 2;\n"
" border-width: 0;\n"
"}\n"
"\n"
"*:prelight {\n"
" background-color: shade (@bg_color, 1.05);\n"
" color: shade (@fg_color, 1.3);\n"
"}\n"
"\n"
"*:selected {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".expander, GtkTreeView.view.expander {\n"
" color: #fff;\n"
"}\n"
"\n"
".expander:prelight,\n"
"GtkTreeView.view.expander:selected:prelight {\n"
" color: @text_color;\n"
"}\n"
"\n"
".expander:active {\n"
" transition: 200ms linear;\n"
"}\n"
"\n"
"*:insensitive {\n"
" border-color: shade (@bg_color, 0.7);\n"
" background-color: shade (@bg_color, 0.9);\n"
" color: shade (@bg_color, 0.7);\n"
"}\n"
"\n"
".view {\n"
" border-width: 0;\n"
" border-radius: 0;\n"
" background-color: @base_color;\n"
" color: @text_color;\n"
"}\n"
".view:selected {\n"
" background-color: shade (@bg_color, 0.9);\n"
" color: @fg_color;\n"
"}\n"
"\n"
".view:selected:focused {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".view column:sorted row,\n"
".view column:sorted row:prelight {\n"
" background-color: shade (@bg_color, 0.85);\n"
"}\n"
"\n"
".view column:sorted row:nth-child(odd),\n"
".view column:sorted row:nth-child(odd):prelight {\n"
" background-color: shade (@bg_color, 0.8);\n"
"}\n"
"\n"
".view row,\n"
".view row:prelight {\n"
" background-color: @base_color;\n"
" color: @text_color;\n"
"}\n"
"\n"
".view row:nth-child(odd),\n"
".view row:nth-child(odd):prelight {\n"
" background-color: shade (@base_color, 0.93); \n"
"}\n"
"\n"
".view row:selected:focused {\n"
" background-color: @selected_bg_color;\n"
"}\n"
"\n"
".view row:selected {\n"
" background-color: darker (@bg_color);\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".view.cell.trough,\n"
".view.cell.trough:hover,\n"
".view.cell.trough:selected,\n"
".view.cell.trough:selected:focused {\n"
" background-color: @bg_color;\n"
" color: @fg_color;\n"
"}\n"
"\n"
".view.cell.progressbar,\n"
".view.cell.progressbar:hover,\n"
".view.cell.progressbar:selected,\n"
".view.cell.progressbar:selected:focused {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".rubberband {\n"
" background-color: alpha (@fg_color, 0.25);\n"
" border-color: @fg_color;\n"
" border-style: solid;\n"
" border-width: 1;\n"
"}\n"
"\n"
".tooltip {\n"
" background-color: @tooltip_bg_color; \n"
" color: @tooltip_fg_color; \n"
" border-color: @tooltip_fg_color; \n"
" border-width: 1;\n"
" border-style: solid;\n"
"}\n"
"\n"
".button,\n"
".slider {\n"
" border-style: outset; \n"
" border-width: 2; \n"
"}\n"
"\n"
".button:active {\n"
" background-color: shade (@bg_color, 0.7);\n"
" border-style: inset; \n"
"}\n"
"\n"
".button:prelight,\n"
".slider:prelight {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
" border-color: shade (@selected_bg_color, 0.7);\n"
"}\n"
"\n"
".trough {\n"
" background-color: darker (@bg_color);\n"
" border-style: inset;\n"
" border-width: 1;\n"
" padding: 0;\n"
"}\n"
"\n"
".entry {\n"
" border-style: inset;\n"
" border-width: 2;\n"
" background-color: @base_color;\n"
" color: @text_color;\n"
"}\n"
"\n"
".entry:insensitive {\n"
" background-color: shade (@base_color, 0.9);\n"
" color: shade (@base_color, 0.7);\n"
"}\n"
".entry:active {\n"
" background-color: #c4c2bd;\n"
" color: #000;\n"
"}\n"
"\n"
".progressbar,\n"
".entry.progressbar, \n"
".cell.progressbar {\n"
" background-color: @selected_bg_color;\n"
" border-color: shade (@selected_bg_color, 0.7);\n"
" color: @selected_fg_color;\n"
" border-style: outset;\n"
" border-width: 1;\n"
"}\n"
"\n"
"GtkCheckButton:hover,\n"
"GtkCheckButton:selected,\n"
"GtkRadioButton:hover,\n"
"GtkRadioButton:selected {\n"
" background-color: shade (@bg_color, 1.05);\n"
"}\n"
"\n"
".check, .radio,"
".cell.check, .cell.radio,\n"
".cell.check:hover, .cell.radio:hover {\n"
" border-style: solid;\n"
" border-width: 1;\n"
" background-color: @base_color;\n"
" border-color: @fg_color;\n"
"}\n"
"\n"
".check:active, .radio:active,\n"
".check:hover, .radio:hover {\n"
" background-color: @base_color;\n"
" border-color: @fg_color;\n"
" color: @text_color;\n"
"}\n"
"\n"
".check:selected, .radio:selected {\n"
" background-color: darker (@bg_color);\n"
" color: @selected_fg_color;\n"
" border-color: @selected_fg_color;\n"
"}\n"
"\n"
".check:selected:focused, .radio:selected:focused {\n"
" background-color: @selected_bg_color;\n"
"}\n"
"\n"
".menu.check, .menu.radio {\n"
" color: @fg_color;\n"
" border-style: none;\n"
" border-width: 0;\n"
"}\n"
"\n"
".popup {\n"
" border-style: outset;\n"
" border-width: 1;\n"
"}\n"
"\n"
".viewport {\n"
" border-style: inset;\n"
" border-width: 2;\n"
"}\n"
"\n"
".notebook {\n"
" border-style: outset;\n"
" border-width: 1;\n"
"}\n"
"\n"
".frame {\n"
" border-style: inset;\n"
" border-width: 1;\n"
"}\n"
"\n"
"GtkScrolledWindow.frame {\n"
" padding: 0;\n"
"}\n"
"\n"
".menu,\n"
".menubar,\n"
".toolbar {\n"
" border-style: outset;\n"
" border-width: 1;\n"
"}\n"
"\n"
".menu:hover,\n"
".menubar:hover,\n"
".menu.check:hover,\n"
".menu.radio:hover {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
"GtkSpinButton.button {\n"
" border-width: 1;\n"
"}\n"
"\n"
".scale.slider:hover,\n"
"GtkSpinButton.button:hover {\n"
" background-color: shade (@bg_color, 1.05);\n"
" border-color: shade (@bg_color, 0.8);\n"
"}\n"
"\n"
"GtkSwitch.trough:active {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
"GtkToggleButton.button:inconsistent {\n"
" border-style: outset;\n"
" border-width: 1px;\n"
" background-color: shade (@bg_color, 0.9);\n"
" border-color: shade (@bg_color, 0.7);\n"
"}\n"
"\n"
"GtkLabel:selected {\n"
" background-color: shade (@bg_color, 0.9);\n"
"}\n"
"\n"
"GtkLabel:selected:focused {\n"
" background-color: @selected_bg_color;\n"
"}\n"
"\n"
".spinner:active {\n"
" transition: 750ms linear loop;\n"
"}\n"
"\n"
".info {\n"
" background-color: @info_bg_color;\n"
" color: @info_fg_color;\n"
"}\n"
"\n"
".warning {\n"
" background-color: @warning_bg_color;\n"
" color: @warning_fg_color;\n"
"}\n"
"\n"
".question {\n"
" background-color: @question_bg_color;\n"
" color: @question_fg_color;\n"
"}\n"
"\n"
".error {\n"
" background-color: @error_bg_color;\n"
" color: @error_fg_color;\n"
"}\n"
"\n"
".highlight {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".light-area-focus {\n"
" color: #000;\n"
"}\n"
"\n"
".dark-area-focus {\n"
" color: #fff;\n"
"}\n"
"GtkCalendar.view {\n"
" border-width: 1;\n"
" border-style: inset;\n"
" padding: 1;\n"
"}\n"
"\n"
"GtkCalendar.view:inconsistent {\n"
" color: darker (@bg_color);\n"
"}\n"
"\n"
"GtkCalendar.header {\n"
" background-color: @bg_color;\n"
" border-style: outset;\n"
" border-width: 2;\n"
"}\n"
"\n"
"GtkCalendar.highlight {\n"
" border-width: 0;\n"
"}\n"
"\n"
"GtkCalendar.button {\n"
" background-color: @bg_color;\n"
"}\n"
"\n"
"GtkCalendar.button:hover {\n"
" background-color: lighter (@bg_color);\n"
" color: @fg_color;\n"
"}\n"
"\n"
".menu * {\n"
" border-width: 0;\n"
" padding: 2;\n"
"}\n"
"\n";
provider = gtk_css_provider_new ();
if (!gtk_css_provider_load_from_data (provider, str, -1, NULL))
{
g_error ("Failed to load the internal default CSS.");
}
}
return provider;
}
gchar *
_gtk_css_provider_get_theme_dir (void)
{
const gchar *var;
gchar *path;
var = g_getenv ("GTK_DATA_PREFIX");
if (var)
path = g_build_filename (var, "share", "themes", NULL);
else
path = g_build_filename (GTK_DATA_PREFIX, "share", "themes", NULL);
return path;
}
/**
* gtk_css_provider_get_named:
* @name: A theme name
* @variant: (allow-none): variant to load, for example, "dark", or
* %NULL for the default
*
* Loads a theme from the usual theme paths
*
* Returns: (transfer none): a #GtkCssProvider with the theme loaded.
* This memory is owned by GTK+, and you must not free it.
*/
GtkCssProvider *
gtk_css_provider_get_named (const gchar *name,
const gchar *variant)
{
static GHashTable *themes = NULL;
GtkCssProvider *provider;
gchar *key;
if (G_UNLIKELY (!themes))
themes = g_hash_table_new (g_str_hash, g_str_equal);
if (variant == NULL)
key = (gchar *)name;
else
key = g_strconcat (name, "-", variant, NULL);
provider = g_hash_table_lookup (themes, key);
if (!provider)
{
const gchar *home_dir;
gchar *subpath, *path = NULL;
if (variant)
subpath = g_strdup_printf ("gtk-3.0" G_DIR_SEPARATOR_S "gtk-%s.css", variant);
else
subpath = g_strdup ("gtk-3.0" G_DIR_SEPARATOR_S "gtk.css");
/* First look in the users home directory
*/
home_dir = g_get_home_dir ();
if (home_dir)
{
path = g_build_filename (home_dir, ".themes", name, subpath, NULL);
if (!g_file_test (path, G_FILE_TEST_EXISTS))
{
g_free (path);
path = NULL;
}
}
if (!path)
{
gchar *theme_dir;
theme_dir = _gtk_css_provider_get_theme_dir ();
path = g_build_filename (theme_dir, name, subpath, NULL);
g_free (theme_dir);
if (!g_file_test (path, G_FILE_TEST_EXISTS))
{
g_free (path);
path = NULL;
}
}
g_free (subpath);
if (path)
{
GError *error;
provider = gtk_css_provider_new ();
error = NULL;
if (!gtk_css_provider_load_from_path (provider, path, &error))
{
g_warning ("Could not load named theme \"%s\": %s", name, error->message);
g_error_free (error);
g_object_unref (provider);
provider = NULL;
}
else
g_hash_table_insert (themes, g_strdup (key), provider);
g_free (path);
}
}
if (key != name)
g_free (key);
return provider;
}
static void
selector_style_info_print (const SelectorStyleInfo *info,
GString *str)
{
GList *keys, *walk;
char *s;
_gtk_css_selector_print (info->selector, str);
g_string_append (str, " {\n");
keys = g_hash_table_get_keys (info->style);
/* so the output is identical for identical selector styles */
keys = g_list_sort (keys, (GCompareFunc) strcmp);
for (walk = keys; walk; walk = walk->next)
{
const char *name = walk->data;
const GValue *value = g_hash_table_lookup (info->style, (gpointer) name);
g_string_append (str, " ");
g_string_append (str, name);
g_string_append (str, ": ");
s = _gtk_css_value_to_string (value);
g_string_append (str, s);
g_free (s);
g_string_append (str, ";\n");
}
g_list_free (keys);
g_string_append (str, "}\n");
}
static void
gtk_css_provider_print_colors (GHashTable *colors,
GString *str)
{
GList *keys, *walk;
char *s;
keys = g_hash_table_get_keys (colors);
/* so the output is identical for identical styles */
keys = g_list_sort (keys, (GCompareFunc) strcmp);
for (walk = keys; walk; walk = walk->next)
{
const char *name = walk->data;
GtkSymbolicColor *symbolic = g_hash_table_lookup (colors, (gpointer) name);
g_string_append (str, "@define-color ");
g_string_append (str, name);
g_string_append (str, " ");
s = gtk_symbolic_color_to_string (symbolic);
g_string_append (str, s);
g_free (s);
g_string_append (str, ";\n");
}
g_list_free (keys);
}
/**
* gtk_css_provider_to_string:
* @provider: the provider to write to a string
*
* Convertes the @provider into a string representation in CSS
* format.
*
* Using gtk_css_provider_load_from_data() with the return value
* from this function on a new provider created with
* gtk_css_provider_new() will basicallu create a duplicate of
* this @provider.
*
* Returns: a new string representing the @provider.
**/
char *
gtk_css_provider_to_string (GtkCssProvider *provider)
{
GtkCssProviderPrivate *priv;
GString *str;
guint i;
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (provider), NULL);
priv = provider->priv;
str = g_string_new ("");
gtk_css_provider_print_colors (priv->symbolic_colors, str);
for (i = 0; i < priv->selectors_info->len; i++)
{
if (i > 0)
g_string_append (str, "\n");
selector_style_info_print (g_ptr_array_index (priv->selectors_info, i),
str);
}
return g_string_free (str, FALSE);
}
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