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ee31a016ec
gtk2/gtk/gtkcssprovider.c
Carlos Garnacho ee31a016ec Make GtkInfoBar use GtkStyleContext 
All colors are defined now in the default css, and classes have
been added so the bars are fully themeable (as opposed to
gtk_widget_override_*, which require changing the color map itself)
2010-12-14 02:29:57 +01:00

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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 <gtk/gtk.h>
#include <gtkstyleprovider.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <cairo-gobject.h>
#include "gtkanimationdescription.h"
#include "gtk9slice.h"
#include "gtkcssprovider.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><replaceable>XDG_CONFIG_HOME</replaceable>/gtk-3.0/gtk.css</filename>
* is loaded if it exists. Then, GTK+ tries to load
* <filename><replaceable>HOME</replaceable>/.themes/<replaceable>theme-name</replaceable>/gtk-3.0/gtk.css</filename>,
* falling back to
* <filename><replaceable>GTK_DATA_PREFIX</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>GTK_DATA_PREFIX</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>
* <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>
* 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;</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>
* </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 GtkCssProviderPrivate GtkCssProviderPrivate;
typedef struct SelectorElement SelectorElement;
typedef struct SelectorPath SelectorPath;
typedef struct SelectorStyleInfo SelectorStyleInfo;
typedef enum SelectorElementType SelectorElementType;
typedef enum CombinatorType CombinatorType;
typedef enum ParserScope ParserScope;
typedef enum ParserSymbol ParserSymbol;
enum SelectorElementType {
SELECTOR_TYPE_NAME,
SELECTOR_NAME,
SELECTOR_GTYPE,
SELECTOR_REGION,
SELECTOR_CLASS,
SELECTOR_GLOB
};
enum CombinatorType {
COMBINATOR_DESCENDANT, /* No direct relation needed */
COMBINATOR_CHILD /* Direct child */
};
struct SelectorElement
{
SelectorElementType elem_type;
CombinatorType combinator;
union
{
GQuark name;
GType type;
struct
{
GQuark name;
GtkRegionFlags flags;
} region;
};
};
struct SelectorPath
{
GSList *elements;
GtkStateFlags state;
guint ref_count;
};
struct SelectorStyleInfo
{
SelectorPath *path;
GHashTable *style;
};
struct GtkCssProviderPrivate
{
GScanner *scanner;
gchar *filename;
const gchar *buffer;
const gchar *value_pos;
GHashTable *symbolic_colors;
GPtrArray *selectors_info;
/* Current parser state */
GSList *state;
GSList *cur_selectors;
GHashTable *cur_properties;
};
enum ParserScope {
SCOPE_SELECTOR,
SCOPE_PSEUDO_CLASS,
SCOPE_NTH_CHILD,
SCOPE_DECLARATION,
SCOPE_VALUE
};
/* 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
};
static void gtk_css_provider_finalize (GObject *object);
static void gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface);
static void scanner_apply_scope (GScanner *scanner,
ParserScope scope);
static gboolean css_provider_parse_value (GtkCssProvider *css_provider,
const gchar *value_str,
GValue *value,
GError **error);
static gboolean gtk_css_provider_load_from_path_internal (GtkCssProvider *css_provider,
const gchar *path,
gboolean reset,
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_class_init (GtkCssProviderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_css_provider_finalize;
g_type_class_add_private (object_class, sizeof (GtkCssProviderPrivate));
}
static SelectorPath *
selector_path_new (void)
{
SelectorPath *path;
path = g_slice_new0 (SelectorPath);
path->ref_count = 1;
return path;
}
static SelectorPath *
selector_path_ref (SelectorPath *path)
{
path->ref_count++;
return path;
}
static void
selector_path_unref (SelectorPath *path)
{
path->ref_count--;
if (path->ref_count > 0)
return;
while (path->elements)
{
g_slice_free (SelectorElement, path->elements->data);
path->elements = g_slist_delete_link (path->elements, path->elements);
}
g_slice_free (SelectorPath, path);
}
static void
selector_path_prepend_type (SelectorPath *path,
const gchar *type_name)
{
SelectorElement *elem;
GType type;
elem = g_slice_new (SelectorElement);
elem->combinator = COMBINATOR_DESCENDANT;
type = g_type_from_name (type_name);
if (type == G_TYPE_INVALID)
{
elem->elem_type = SELECTOR_TYPE_NAME;
elem->name = g_quark_from_string (type_name);
}
else
{
elem->elem_type = SELECTOR_GTYPE;
elem->type = type;
}
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_glob (SelectorPath *path)
{
SelectorElement *elem;
elem = g_slice_new (SelectorElement);
elem->elem_type = SELECTOR_GLOB;
elem->combinator = COMBINATOR_DESCENDANT;
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_region (SelectorPath *path,
const gchar *name,
GtkRegionFlags flags)
{
SelectorElement *elem;
elem = g_slice_new (SelectorElement);
elem->combinator = COMBINATOR_DESCENDANT;
elem->elem_type = SELECTOR_REGION;
elem->region.name = g_quark_from_string (name);
elem->region.flags = flags;
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_name (SelectorPath *path,
const gchar *name)
{
SelectorElement *elem;
elem = g_slice_new (SelectorElement);
elem->combinator = COMBINATOR_DESCENDANT;
elem->elem_type = SELECTOR_NAME;
elem->name = g_quark_from_string (name);
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_class (SelectorPath *path,
const gchar *name)
{
SelectorElement *elem;
elem = g_slice_new (SelectorElement);
elem->combinator = COMBINATOR_DESCENDANT;
elem->elem_type = SELECTOR_CLASS;
elem->name = g_quark_from_string (name);
path->elements = g_slist_prepend (path->elements, elem);
}
static void
selector_path_prepend_combinator (SelectorPath *path,
CombinatorType combinator)
{
SelectorElement *elem;
g_assert (path->elements != NULL);
/* It is actually stored in the last element */
elem = path->elements->data;
elem->combinator = combinator;
}
static gint
selector_path_depth (SelectorPath *path)
{
return g_slist_length (path->elements);
}
static SelectorStyleInfo *
selector_style_info_new (SelectorPath *path)
{
SelectorStyleInfo *info;
info = g_slice_new0 (SelectorStyleInfo);
info->path = selector_path_ref (path);
return info;
}
static void
selector_style_info_free (SelectorStyleInfo *info)
{
if (info->style)
g_hash_table_unref (info->style);
if (info->path)
selector_path_unref (info->path);
}
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 GScanner *
create_scanner (void)
{
GScanner *scanner;
scanner = g_scanner_new (NULL);
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "active", GUINT_TO_POINTER (GTK_STATE_ACTIVE));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "prelight", GUINT_TO_POINTER (GTK_STATE_PRELIGHT));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "hover", GUINT_TO_POINTER (GTK_STATE_PRELIGHT));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "selected", GUINT_TO_POINTER (GTK_STATE_SELECTED));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "insensitive", GUINT_TO_POINTER (GTK_STATE_INSENSITIVE));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "inconsistent", GUINT_TO_POINTER (GTK_STATE_INCONSISTENT));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "focused", GUINT_TO_POINTER (GTK_STATE_FOCUSED));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "focus", GUINT_TO_POINTER (GTK_STATE_FOCUSED));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "nth-child", GUINT_TO_POINTER (SYMBOL_NTH_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "first-child", GUINT_TO_POINTER (SYMBOL_FIRST_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "last-child", GUINT_TO_POINTER (SYMBOL_LAST_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "sorted", GUINT_TO_POINTER (SYMBOL_SORTED_CHILD));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "even", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_EVEN));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "odd", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_ODD));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "first", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_FIRST));
g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "last", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_LAST));
scanner_apply_scope (scanner, SCOPE_SELECTOR);
return scanner;
}
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->scanner = create_scanner ();
priv->symbolic_colors = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) gtk_symbolic_color_unref);
}
typedef struct ComparePathData ComparePathData;
struct ComparePathData
{
guint64 score;
SelectorPath *path;
GSList *iter;
};
static gboolean
compare_selector_element (GtkWidgetPath *path,
guint index,
SelectorElement *elem,
guint8 *score)
{
*score = 0;
if (elem->elem_type == SELECTOR_TYPE_NAME)
{
const gchar *type_name;
GType resolved_type;
/* Resolve the type name */
type_name = g_quark_to_string (elem->name);
resolved_type = g_type_from_name (type_name);
if (resolved_type == G_TYPE_INVALID)
{
/* Type couldn't be resolved, so the selector
* clearly doesn't affect the given widget path
*/
return FALSE;
}
elem->elem_type = SELECTOR_GTYPE;
elem->type = resolved_type;
}
if (elem->elem_type == SELECTOR_GTYPE)
{
GType type;
type = gtk_widget_path_iter_get_widget_type (path, index);
if (!g_type_is_a (type, elem->type))
return FALSE;
if (type == elem->type)
*score |= 0xF;
else
{
GType parent = type;
*score = 0xE;
while ((parent = g_type_parent (parent)) != G_TYPE_INVALID)
{
if (parent == elem->type)
break;
*score -= 1;
if (*score == 1)
{
g_warning ("Hierarchy is higher than expected.");
break;
}
}
}
return TRUE;
}
else if (elem->elem_type == SELECTOR_REGION)
{
GtkRegionFlags flags;
if (!gtk_widget_path_iter_has_qregion (path, index,
elem->region.name,
&flags))
return FALSE;
if (elem->region.flags != 0 &&
(flags & elem->region.flags) == 0)
return FALSE;
*score = 0xF;
return TRUE;
}
else if (elem->elem_type == SELECTOR_GLOB)
{
/* Treat as lowest matching type */
*score = 1;
return TRUE;
}
else if (elem->elem_type == SELECTOR_NAME)
{
if (!gtk_widget_path_iter_has_qname (path, index, elem->name))
return FALSE;
*score = 0xF;
return TRUE;
}
else if (elem->elem_type == SELECTOR_CLASS)
{
if (!gtk_widget_path_iter_has_qclass (path, index, elem->name))
return FALSE;
*score = 0xF;
return TRUE;
}
return FALSE;
}
static guint64
compare_selector (GtkWidgetPath *path,
SelectorPath *selector)
{
GSList *elements = selector->elements;
gboolean match = TRUE, first = TRUE, first_match = FALSE;
guint64 score = 0;
gint i;
i = gtk_widget_path_length (path) - 1;
while (elements && match && i >= 0)
{
SelectorElement *elem;
guint8 elem_score;
elem = elements->data;
match = compare_selector_element (path, i, elem, &elem_score);
if (match && first)
first_match = TRUE;
/* Only move on to the next index if there is no match
* with the current element (whether to continue or not
* handled right after in the combinator check), or a
* GType or glob has just been matched.
*
* Region and widget names do not trigger this because
* the next element in the selector path could also be
* related to the same index.
*/
if (!match ||
(elem->elem_type == SELECTOR_GTYPE ||
elem->elem_type == SELECTOR_GLOB))
i--;
if (!match &&
elem->elem_type != SELECTOR_TYPE_NAME &&
elem->combinator == COMBINATOR_DESCENDANT)
{
/* With descendant combinators there may
* be intermediate chidren in the hierarchy
*/
match = TRUE;
}
else if (match)
elements = elements->next;
if (match)
{
/* Only 4 bits are actually used */
score <<= 4;
score |= elem_score;
}
first = FALSE;
}
/* If there are pending selector
* elements to compare, it's not
* a match.
*/
if (elements)
match = FALSE;
if (!match)
score = 0;
else if (first_match)
{
/* Assign more weight to these selectors
* that matched right from the first element.
*/
score <<= 4;
}
return score;
}
typedef struct StylePriorityInfo StylePriorityInfo;
struct StylePriorityInfo
{
guint64 score;
GHashTable *style;
GtkStateFlags state;
};
static GArray *
css_provider_get_selectors (GtkCssProvider *css_provider,
GtkWidgetPath *path)
{
GtkCssProviderPrivate *priv;
GArray *priority_info;
guint i, j;
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;
gboolean added = FALSE;
guint64 score;
info = g_ptr_array_index (priv->selectors_info, i);
score = compare_selector (path, info->path);
if (score <= 0)
continue;
new.score = score;
new.style = info->style;
new.state = info->path->state;
for (j = 0; j < priority_info->len; j++)
{
StylePriorityInfo *cur;
cur = &g_array_index (priority_info, StylePriorityInfo, j);
if (cur->score > new.score)
{
g_array_insert_val (priority_info, j, new);
added = TRUE;
break;
}
}
if (!added)
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;
GtkCssProviderPrivate *priv;
GtkStyleProperties *props;
GArray *priority_info;
guint i;
css_provider = GTK_CSS_PROVIDER (provider);
props = gtk_style_properties_new ();
priv = css_provider->priv;
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)
{
GArray *priority_info;
gboolean found = FALSE;
gchar *prop_name;
gint i;
prop_name = g_strdup_printf ("-%s-%s",
g_type_name (pspec->owner_type),
pspec->name);
priority_info = css_provider_get_selectors (GTK_CSS_PROVIDER (provider), path);
for (i = priority_info->len - 1; i >= 0; i--)
{
StylePriorityInfo *info;
GValue *val;
info = &g_array_index (priority_info, StylePriorityInfo, i);
val = g_hash_table_lookup (info->style, prop_name);
if (val &&
(info->state == 0 ||
info->state == state ||
((info->state & state) != 0 &&
(info->state & ~(state)) == 0)))
{
const gchar *val_str;
val_str = g_value_get_string (val);
found = TRUE;
css_provider_parse_value (GTK_CSS_PROVIDER (provider), val_str, value, NULL);
break;
}
}
g_array_free (priority_info, TRUE);
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_scanner_destroy (priv->scanner);
g_free (priv->filename);
g_ptr_array_free (priv->selectors_info, TRUE);
g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL);
g_slist_free (priv->cur_selectors);
if (priv->cur_properties)
g_hash_table_unref (priv->cur_properties);
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
property_value_free (GValue *value)
{
if (G_IS_VALUE (value))
g_value_unset (value);
g_slice_free (GValue, value);
}
static void
scanner_apply_scope (GScanner *scanner,
ParserScope scope)
{
g_scanner_set_scope (scanner, scope);
if (scope == SCOPE_VALUE)
{
scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "@#-_";
scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "@#-_ +(),.%\t\n'/\"";
scanner->config->scan_identifier_1char = TRUE;
}
else if (scope == SCOPE_SELECTOR)
{
scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "*@";
scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "-_#.";
scanner->config->scan_identifier_1char = TRUE;
}
else if (scope == SCOPE_PSEUDO_CLASS ||
scope == SCOPE_NTH_CHILD ||
scope == SCOPE_DECLARATION)
{
scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "-_";
scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "-_";
scanner->config->scan_identifier_1char = FALSE;
}
else
g_assert_not_reached ();
scanner->config->scan_float = FALSE;
scanner->config->cpair_comment_single = NULL;
}
static void
css_provider_push_scope (GtkCssProvider *css_provider,
ParserScope scope)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
priv->state = g_slist_prepend (priv->state, GUINT_TO_POINTER (scope));
scanner_apply_scope (priv->scanner, scope);
}
static ParserScope
css_provider_pop_scope (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
ParserScope scope = SCOPE_SELECTOR;
priv = css_provider->priv;
if (!priv->state)
{
g_warning ("Push/pop calls to parser scope aren't paired");
scanner_apply_scope (priv->scanner, SCOPE_SELECTOR);
return SCOPE_SELECTOR;
}
priv->state = g_slist_delete_link (priv->state, priv->state);
/* Fetch new scope */
if (priv->state)
scope = GPOINTER_TO_INT (priv->state->data);
scanner_apply_scope (priv->scanner, scope);
return scope;
}
static void
css_provider_reset_parser (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
priv = css_provider->priv;
g_slist_free (priv->state);
priv->state = NULL;
scanner_apply_scope (priv->scanner, SCOPE_SELECTOR);
priv->scanner->user_data = NULL;
priv->value_pos = NULL;
g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL);
g_slist_free (priv->cur_selectors);
priv->cur_selectors = NULL;
if (priv->cur_properties)
g_hash_table_unref (priv->cur_properties);
priv->cur_properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) property_value_free);
}
static void
css_provider_commit (GtkCssProvider *css_provider)
{
GtkCssProviderPrivate *priv;
GSList *l;
priv = css_provider->priv;
l = priv->cur_selectors;
while (l)
{
SelectorPath *path = l->data;
SelectorStyleInfo *info;
info = selector_style_info_new (path);
selector_style_info_set_style (info, priv->cur_properties);
g_ptr_array_add (priv->selectors_info, info);
l = l->next;
}
}
static GTokenType
parse_nth_child (GtkCssProvider *css_provider,
GScanner *scanner,
GtkRegionFlags *flags)
{
ParserSymbol symbol;
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_SYMBOL)
return G_TOKEN_SYMBOL;
symbol = GPOINTER_TO_INT (scanner->value.v_symbol);
if (symbol == SYMBOL_NTH_CHILD)
{
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_LEFT_PAREN)
return G_TOKEN_LEFT_PAREN;
css_provider_push_scope (css_provider, SCOPE_NTH_CHILD);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_SYMBOL)
return G_TOKEN_SYMBOL;
symbol = GPOINTER_TO_INT (scanner->value.v_symbol);
switch (symbol)
{
case SYMBOL_NTH_CHILD_EVEN:
*flags = GTK_REGION_EVEN;
break;
case SYMBOL_NTH_CHILD_ODD:
*flags = GTK_REGION_ODD;
break;
case SYMBOL_NTH_CHILD_FIRST:
*flags = GTK_REGION_FIRST;
break;
case SYMBOL_NTH_CHILD_LAST:
*flags = GTK_REGION_LAST;
break;
default:
break;
}
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_RIGHT_PAREN)
return G_TOKEN_RIGHT_PAREN;
css_provider_pop_scope (css_provider);
}
else if (symbol == SYMBOL_FIRST_CHILD)
*flags = GTK_REGION_FIRST;
else if (symbol == SYMBOL_LAST_CHILD)
*flags = GTK_REGION_LAST;
else if (symbol == SYMBOL_SORTED_CHILD)
*flags = GTK_REGION_SORTED;
else
{
*flags = 0;
return G_TOKEN_SYMBOL;
}
return G_TOKEN_NONE;
}
static GTokenType
parse_pseudo_class (GtkCssProvider *css_provider,
GScanner *scanner,
SelectorPath *selector)
{
GtkStateType state;
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_SYMBOL)
return G_TOKEN_SYMBOL;
state = GPOINTER_TO_INT (scanner->value.v_symbol);
switch (state)
{
case GTK_STATE_ACTIVE:
selector->state |= GTK_STATE_FLAG_ACTIVE;
break;
case GTK_STATE_PRELIGHT:
selector->state |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_SELECTED:
selector->state |= GTK_STATE_FLAG_SELECTED;
break;
case GTK_STATE_INSENSITIVE:
selector->state |= GTK_STATE_FLAG_INSENSITIVE;
break;
case GTK_STATE_INCONSISTENT:
selector->state |= GTK_STATE_FLAG_INCONSISTENT;
break;
case GTK_STATE_FOCUSED:
selector->state |= GTK_STATE_FLAG_FOCUSED;
break;
default:
return G_TOKEN_SYMBOL;
}
return G_TOKEN_NONE;
}
/* Parses a number of concatenated classes */
static void
parse_classes (SelectorPath *path,
const gchar *str)
{
gchar *pos;
if ((pos = strchr (str, '.')) != NULL)
{
/* Leave the last class to the call after the loop */
while (pos)
{
*pos = '\0';
selector_path_prepend_class (path, str);
str = pos + 1;
pos = strchr (str, '.');
}
}
selector_path_prepend_class (path, str);
}
static GTokenType
parse_selector (GtkCssProvider *css_provider,
GScanner *scanner,
SelectorPath **selector_out)
{
SelectorPath *path;
path = selector_path_new ();
*selector_out = path;
if (scanner->token != ':' &&
scanner->token != '#' &&
scanner->token != '.' &&
scanner->token != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
while (scanner->token == '#' ||
scanner->token == '.' ||
scanner->token == G_TOKEN_IDENTIFIER)
{
if (scanner->token == '#' ||
scanner->token == '.')
{
gboolean is_class;
gchar *pos;
is_class = (scanner->token == '.');
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
selector_path_prepend_glob (path);
selector_path_prepend_combinator (path, COMBINATOR_CHILD);
if (is_class)
parse_classes (path, scanner->value.v_identifier);
else
{
if ((pos = strchr (scanner->value.v_identifier, '.')) != NULL)
*pos = '\0';
selector_path_prepend_name (path, scanner->value.v_identifier);
/* Parse any remaining classes */
if (pos)
parse_classes (path, pos + 1);
}
}
else if (g_ascii_isupper (scanner->value.v_identifier[0]))
{
gchar *pos;
if ((pos = strchr (scanner->value.v_identifier, '#')) != NULL ||
(pos = strchr (scanner->value.v_identifier, '.')) != NULL)
{
gchar *type_name, *name;
gboolean is_class;
is_class = (*pos == '.');
/* Widget type and name/class put together */
name = pos + 1;
*pos = '\0';
type_name = scanner->value.v_identifier;
selector_path_prepend_type (path, type_name);
/* This is only so there is a direct relationship
* between widget type and its name.
*/
selector_path_prepend_combinator (path, COMBINATOR_CHILD);
if (is_class)
parse_classes (path, name);
else
{
if ((pos = strchr (name, '.')) != NULL)
*pos = '\0';
selector_path_prepend_name (path, name);
/* Parse any remaining classes */
if (pos)
parse_classes (path, pos + 1);
}
}
else
selector_path_prepend_type (path, scanner->value.v_identifier);
}
else if (g_ascii_islower (scanner->value.v_identifier[0]))
{
GtkRegionFlags flags = 0;
gchar *region_name;
region_name = g_strdup (scanner->value.v_identifier);
if (g_scanner_peek_next_token (scanner) == ':')
{
ParserSymbol symbol;
g_scanner_get_next_token (scanner);
css_provider_push_scope (css_provider, SCOPE_PSEUDO_CLASS);
/* Check for the next token being nth-child, parse in that
* case, and fallback into common state parsing if not.
*/
if (g_scanner_peek_next_token (scanner) != G_TOKEN_SYMBOL)
return G_TOKEN_SYMBOL;
symbol = GPOINTER_TO_INT (scanner->next_value.v_symbol);
if (symbol == SYMBOL_FIRST_CHILD ||
symbol == SYMBOL_LAST_CHILD ||
symbol == SYMBOL_NTH_CHILD ||
symbol == SYMBOL_SORTED_CHILD)
{
GTokenType token;
if ((token = parse_nth_child (css_provider, scanner, &flags)) != G_TOKEN_NONE)
return token;
css_provider_pop_scope (css_provider);
}
else
{
css_provider_pop_scope (css_provider);
selector_path_prepend_region (path, region_name, 0);
g_free (region_name);
break;
}
}
selector_path_prepend_region (path, region_name, flags);
g_free (region_name);
}
else if (scanner->value.v_identifier[0] == '*')
selector_path_prepend_glob (path);
else
return G_TOKEN_IDENTIFIER;
g_scanner_get_next_token (scanner);
if (scanner->token == '>')
{
selector_path_prepend_combinator (path, COMBINATOR_CHILD);
g_scanner_get_next_token (scanner);
}
}
if (scanner->token == ':')
{
/* Add glob selector if path is empty */
if (selector_path_depth (path) == 0)
selector_path_prepend_glob (path);
css_provider_push_scope (css_provider, SCOPE_PSEUDO_CLASS);
while (scanner->token == ':')
{
GTokenType token;
if ((token = parse_pseudo_class (css_provider, scanner, path)) != G_TOKEN_NONE)
return token;
g_scanner_get_next_token (scanner);
}
css_provider_pop_scope (css_provider);
}
return G_TOKEN_NONE;
}
#define SKIP_SPACES(s) while (s[0] == ' ' || s[0] == '\t' || s[0] == '\n') s++;
#define SKIP_SPACES_BACK(s) while (s[0] == ' ' || s[0] == '\t' || s[0] == '\n') s--;
static GtkSymbolicColor *
symbolic_color_parse_str (const gchar *string,
gchar **end_ptr)
{
GtkSymbolicColor *symbolic_color = NULL;
gchar *str;
str = (gchar *) string;
*end_ptr = str;
if (str[0] == '@')
{
const gchar *end;
gchar *name;
str++;
end = str;
while (*end == '-' || *end == '_' || g_ascii_isalpha (*end))
end++;
name = g_strndup (str, end - str);
symbolic_color = gtk_symbolic_color_new_name (name);
g_free (name);
*end_ptr = (gchar *) end;
}
else if (g_str_has_prefix (str, "lighter") ||
g_str_has_prefix (str, "darker"))
{
GtkSymbolicColor *param_color;
gboolean is_lighter = FALSE;
is_lighter = g_str_has_prefix (str, "lighter");
if (is_lighter)
str += strlen ("lighter");
else
str += strlen ("darker");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
param_color = symbolic_color_parse_str (str, end_ptr);
if (!param_color)
return NULL;
str = *end_ptr;
SKIP_SPACES (str);
*end_ptr = (gchar *) str;
if (*str != ')')
{
gtk_symbolic_color_unref (param_color);
return NULL;
}
if (is_lighter)
symbolic_color = gtk_symbolic_color_new_shade (param_color, 1.3);
else
symbolic_color = gtk_symbolic_color_new_shade (param_color, 0.7);
gtk_symbolic_color_unref (param_color);
(*end_ptr)++;
}
else if (g_str_has_prefix (str, "shade") ||
g_str_has_prefix (str, "alpha"))
{
GtkSymbolicColor *param_color;
gboolean is_shade = FALSE;
gdouble factor;
is_shade = g_str_has_prefix (str, "shade");
if (is_shade)
str += strlen ("shade");
else
str += strlen ("alpha");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
param_color = symbolic_color_parse_str (str, end_ptr);
if (!param_color)
return NULL;
str = *end_ptr;
SKIP_SPACES (str);
if (str[0] != ',')
{
gtk_symbolic_color_unref (param_color);
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
factor = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
*end_ptr = (gchar *) str;
if (str[0] != ')')
{
gtk_symbolic_color_unref (param_color);
return NULL;
}
if (is_shade)
symbolic_color = gtk_symbolic_color_new_shade (param_color, factor);
else
symbolic_color = gtk_symbolic_color_new_alpha (param_color, factor);
gtk_symbolic_color_unref (param_color);
(*end_ptr)++;
}
else if (g_str_has_prefix (str, "mix"))
{
GtkSymbolicColor *color1, *color2;
gdouble factor;
str += strlen ("mix");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
color1 = symbolic_color_parse_str (str, end_ptr);
if (!color1)
return NULL;
str = *end_ptr;
SKIP_SPACES (str);
if (str[0] != ',')
{
gtk_symbolic_color_unref (color1);
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
color2 = symbolic_color_parse_str (str, end_ptr);
if (!color2 || *end_ptr[0] != ',')
{
gtk_symbolic_color_unref (color1);
return NULL;
}
str = *end_ptr;
SKIP_SPACES (str);
if (str[0] != ',')
{
gtk_symbolic_color_unref (color1);
gtk_symbolic_color_unref (color2);
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
factor = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
*end_ptr = (gchar *) str;
if (str[0] != ')')
{
gtk_symbolic_color_unref (color1);
gtk_symbolic_color_unref (color2);
return NULL;
}
symbolic_color = gtk_symbolic_color_new_mix (color1, color2, factor);
gtk_symbolic_color_unref (color1);
gtk_symbolic_color_unref (color2);
(*end_ptr)++;
}
else
{
GdkRGBA color;
gchar *color_str;
const gchar *end;
end = str + 1;
if (str[0] == '#')
{
/* Color in hex format */
while (g_ascii_isxdigit (*end))
end++;
}
else if (g_str_has_prefix (str, "rgb"))
{
/* color in rgb/rgba format */
while (*end != ')' && *end != '\0')
end++;
if (*end == ')')
end++;
}
else
{
/* color name? parse until first whitespace */
while (*end != ' ' && *end != '\0')
end++;
}
color_str = g_strndup (str, end - str);
*end_ptr = (gchar *) end;
if (!gdk_rgba_parse (&color, color_str))
{
g_free (color_str);
return NULL;
}
symbolic_color = gtk_symbolic_color_new_literal (&color);
g_free (color_str);
}
return symbolic_color;
}
static GtkSymbolicColor *
symbolic_color_parse (const gchar *str,
GError **error)
{
GtkSymbolicColor *color;
gchar *end;
color = symbolic_color_parse_str (str, &end);
if (*end != '\0')
{
g_set_error_literal (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Could not parse symbolic color");
if (color)
{
gtk_symbolic_color_unref (color);
color = NULL;
}
}
return color;
}
static GtkGradient *
gradient_parse_str (const gchar *str,
gchar **end_ptr)
{
GtkGradient *gradient = NULL;
gdouble coords[6];
gchar *end;
guint i;
if (g_str_has_prefix (str, "-gtk-gradient"))
{
cairo_pattern_type_t type;
str += strlen ("-gtk-gradient");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
/* Parse gradient type */
if (g_str_has_prefix (str, "linear"))
{
type = CAIRO_PATTERN_TYPE_LINEAR;
str += strlen ("linear");
}
else if (g_str_has_prefix (str, "radial"))
{
type = CAIRO_PATTERN_TYPE_RADIAL;
str += strlen ("radial");
}
else
{
*end_ptr = (gchar *) str;
return NULL;
}
SKIP_SPACES (str);
/* Parse start/stop position parameters */
for (i = 0; i < 2; i++)
{
if (*str != ',')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
if (strncmp (str, "left", 4) == 0)
{
coords[i * 3] = 0;
str += strlen ("left");
}
else if (strncmp (str, "right", 5) == 0)
{
coords[i * 3] = 1;
str += strlen ("right");
}
else if (strncmp (str, "center", 6) == 0)
{
coords[i * 3] = 0.5;
str += strlen ("center");
}
else
{
coords[i * 3] = g_ascii_strtod (str, &end);
if (str == end)
{
*end_ptr = (gchar *) str;
return NULL;
}
str = end;
}
SKIP_SPACES (str);
if (strncmp (str, "top", 3) == 0)
{
coords[(i * 3) + 1] = 0;
str += strlen ("top");
}
else if (strncmp (str, "bottom", 6) == 0)
{
coords[(i * 3) + 1] = 1;
str += strlen ("bottom");
}
else if (strncmp (str, "center", 6) == 0)
{
coords[(i * 3) + 1] = 0.5;
str += strlen ("center");
}
else
{
coords[(i * 3) + 1] = g_ascii_strtod (str, &end);
if (str == end)
{
*end_ptr = (gchar *) str;
return NULL;
}
str = end;
}
SKIP_SPACES (str);
if (type == CAIRO_PATTERN_TYPE_RADIAL)
{
/* Parse radius */
if (*str != ',')
{
*end_ptr = (gchar *) str;
return NULL;
}
str++;
SKIP_SPACES (str);
coords[(i * 3) + 2] = g_ascii_strtod (str, &end);
str = end;
SKIP_SPACES (str);
}
}
if (type == CAIRO_PATTERN_TYPE_LINEAR)
gradient = gtk_gradient_new_linear (coords[0], coords[1], coords[3], coords[4]);
else
gradient = gtk_gradient_new_radial (coords[0], coords[1], coords[2],
coords[3], coords[4], coords[5]);
while (*str == ',')
{
GtkSymbolicColor *color;
gdouble position;
if (*str != ',')
{
*end_ptr = (gchar *) str;
return gradient;
}
str++;
SKIP_SPACES (str);
if (g_str_has_prefix (str, "from"))
{
position = 0;
str += strlen ("from");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return gradient;
}
}
else if (g_str_has_prefix (str, "to"))
{
position = 1;
str += strlen ("to");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return gradient;
}
}
else if (g_str_has_prefix (str, "color-stop"))
{
str += strlen ("color-stop");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return gradient;
}
str++;
SKIP_SPACES (str);
position = g_ascii_strtod (str, &end);
str = end;
SKIP_SPACES (str);
if (*str != ',')
{
*end_ptr = (gchar *) str;
return gradient;
}
}
else
{
*end_ptr = (gchar *) str;
return gradient;
}
str++;
SKIP_SPACES (str);
color = symbolic_color_parse_str (str, &end);
str = end;
SKIP_SPACES (str);
if (*str != ')')
{
*end_ptr = (gchar *) str;
return gradient;
}
str++;
SKIP_SPACES (str);
if (color)
{
gtk_gradient_add_color_stop (gradient, position, color);
gtk_symbolic_color_unref (color);
}
}
if (*str != ')')
{
*end_ptr = (gchar *) str;
return gradient;
}
str++;
}
*end_ptr = (gchar *) str;
return gradient;
}
static gchar *
path_parse_str (GtkCssProvider *css_provider,
const gchar *str,
gchar **end_ptr,
GError **error)
{
gchar *path, *chr;
const gchar *start, *end;
start = str;
if (g_str_has_prefix (str, "url"))
{
str += strlen ("url");
SKIP_SPACES (str);
if (*str != '(')
{
*end_ptr = (gchar *) str;
return NULL;
}
chr = strchr (str, ')');
if (!chr)
{
*end_ptr = (gchar *) str;
return NULL;
}
end = chr + 1;
str++;
SKIP_SPACES (str);
if (*str == '"' || *str == '\'')
{
const gchar *p;
p = str;
str++;
chr--;
SKIP_SPACES_BACK (chr);
if (*chr != *p || chr == p)
{
*end_ptr = (gchar *)str;
return NULL;
}
}
else
{
*end_ptr = (gchar *)str;
return NULL;
}
path = g_strndup (str, chr - str);
g_strstrip (path);
*end_ptr = (gchar *)end;
}
else
{
path = g_strdup (str);
*end_ptr = (gchar *)str + strlen (str);
}
/* Always return an absolute path */
if (!g_path_is_absolute (path))
{
GtkCssProviderPrivate *priv;
gchar *dirname, *full_path;
priv = css_provider->priv;
/* Use relative path to the current CSS file path, if any */
if (priv->filename)
dirname = g_path_get_dirname (priv->filename);
else
dirname = g_get_current_dir ();
full_path = g_build_filename (dirname, path, NULL);
g_free (path);
g_free (dirname);
path = full_path;
}
if (!g_file_test (path, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_EXIST,
"File doesn't exist: %s", path);
g_free (path);
path = NULL;
*end_ptr = (gchar *)start;
}
return path;
}
static gchar *
path_parse (GtkCssProvider *css_provider,
const gchar *str,
GError **error)
{
gchar *path;
gchar *end;
path = path_parse_str (css_provider, str, &end, error);
if (!path)
return NULL;
if (*end != '\0')
{
g_set_error_literal (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Error parsing path");
g_free (path);
path = NULL;
}
return path;
}
static Gtk9Slice *
slice_parse_str (GtkCssProvider *css_provider,
const gchar *str,
gchar **end_ptr,
GError **error)
{
gdouble distance_top, distance_bottom;
gdouble distance_left, distance_right;
GtkSliceSideModifier mods[2];
GdkPixbuf *pixbuf;
Gtk9Slice *slice;
gchar *path;
gint i = 0;
SKIP_SPACES (str);
/* Parse image url */
path = path_parse_str (css_provider, str, end_ptr, error);
if (!path)
return NULL;
str = *end_ptr;
SKIP_SPACES (str);
/* Parse top/left/bottom/right distances */
distance_top = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
distance_right = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
distance_bottom = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
distance_left = g_ascii_strtod (str, end_ptr);
str = *end_ptr;
SKIP_SPACES (str);
while (*str && i < 2)
{
if (g_str_has_prefix (str, "stretch"))
{
str += strlen ("stretch");
mods[i] = GTK_SLICE_STRETCH;
}
else if (g_str_has_prefix (str, "repeat"))
{
str += strlen ("repeat");
mods[i] = GTK_SLICE_REPEAT;
}
else
{
g_free (path);
*end_ptr = (gchar *) str;
return NULL;
}
SKIP_SPACES (str);
i++;
}
*end_ptr = (gchar *) str;
if (*str != '\0')
{
g_free (path);
return NULL;
}
if (i != 2)
{
/* Fill in second modifier, same as the first */
mods[1] = mods[0];
}
pixbuf = gdk_pixbuf_new_from_file (path, error);
g_free (path);
if (!pixbuf)
{
*end_ptr = (gchar *) str;
return NULL;
}
slice = _gtk_9slice_new (pixbuf,
distance_top, distance_bottom,
distance_left, distance_right,
mods[0], mods[1]);
g_object_unref (pixbuf);
return slice;
}
static gdouble
unit_parse_str (const gchar *str,
gchar **end_str)
{
gdouble unit;
SKIP_SPACES (str);
unit = g_ascii_strtod (str, end_str);
str = *end_str;
/* Now parse the unit type, if any. We
* don't admit spaces between these.
*/
if (*str != ' ' && *str != '\0')
{
while (**end_str != ' ' && **end_str != '\0')
(*end_str)++;
/* Only handle pixels at the moment */
if (strncmp (str, "px", 2) != 0)
{
gchar *type;
type = g_strndup (str, *end_str - str);
g_warning ("Unknown unit '%s', only pixel units are "
"currently supported in CSS style", type);
g_free (type);
}
}
return unit;
}
static GtkBorder *
border_parse_str (const gchar *str,
gchar **end_str)
{
gdouble first, second, third, fourth;
GtkBorder *border;
border = gtk_border_new ();
SKIP_SPACES (str);
if (!g_ascii_isdigit (*str))
return border;
first = unit_parse_str (str, end_str);
str = *end_str;
SKIP_SPACES (str);
if (!g_ascii_isdigit (*str))
{
border->left = border->right = border->top = border->bottom = (gint) first;
*end_str = (gchar *) str;
return border;
}
second = unit_parse_str (str, end_str);
str = *end_str;
SKIP_SPACES (str);
if (!g_ascii_isdigit (*str))
{
border->top = border->bottom = (gint) first;
border->left = border->right = (gint) second;
*end_str = (gchar *) str;
return border;
}
third = unit_parse_str (str, end_str);
str = *end_str;
SKIP_SPACES (str);
if (!g_ascii_isdigit (*str))
{
border->top = (gint) first;
border->left = border->right = (gint) second;
border->bottom = (gint) third;
*end_str = (gchar *) str;
return border;
}
fourth = unit_parse_str (str, end_str);
border->top = (gint) first;
border->right = (gint) second;
border->bottom = (gint) third;
border->left = (gint) fourth;
return border;
}
static gboolean
css_provider_parse_value (GtkCssProvider *css_provider,
const gchar *value_str,
GValue *value,
GError **error)
{
GtkCssProviderPrivate *priv;
GType type;
gboolean parsed = TRUE;
gchar *end = NULL;
priv = css_provider->priv;
type = G_VALUE_TYPE (value);
if (type == GDK_TYPE_RGBA ||
type == GDK_TYPE_COLOR)
{
GdkRGBA rgba;
GdkColor color;
if (type == GDK_TYPE_RGBA &&
gdk_rgba_parse (&rgba, value_str))
g_value_set_boxed (value, &rgba);
else if (type == GDK_TYPE_COLOR &&
gdk_color_parse (value_str, &color))
g_value_set_boxed (value, &color);
else
{
GtkSymbolicColor *symbolic_color;
symbolic_color = symbolic_color_parse_str (value_str, &end);
if (symbolic_color)
{
g_value_unset (value);
g_value_init (value, GTK_TYPE_SYMBOLIC_COLOR);
g_value_take_boxed (value, symbolic_color);
}
else
parsed = FALSE;
}
}
else if (type == PANGO_TYPE_FONT_DESCRIPTION)
{
PangoFontDescription *font_desc;
font_desc = pango_font_description_from_string (value_str);
g_value_take_boxed (value, font_desc);
}
else if (type == G_TYPE_BOOLEAN)
{
if (value_str[0] == '1' ||
g_ascii_strcasecmp (value_str, "true") == 0)
g_value_set_boolean (value, TRUE);
else
g_value_set_boolean (value, FALSE);
}
else if (type == G_TYPE_INT)
g_value_set_int (value, atoi (value_str));
else if (type == G_TYPE_UINT)
g_value_set_uint (value, (guint) atoi (value_str));
else if (type == G_TYPE_DOUBLE)
g_value_set_double (value, g_ascii_strtod (value_str, NULL));
else if (type == G_TYPE_FLOAT)
g_value_set_float (value, (gfloat) g_ascii_strtod (value_str, NULL));
else if (type == GTK_TYPE_THEMING_ENGINE)
{
GtkThemingEngine *engine;
engine = gtk_theming_engine_load (value_str);
if (engine)
g_value_set_object (value, engine);
else
parsed = FALSE;
}
else if (type == GTK_TYPE_ANIMATION_DESCRIPTION)
{
GtkAnimationDescription *desc;
desc = _gtk_animation_description_from_string (value_str);
if (desc)
g_value_take_boxed (value, desc);
else
parsed = FALSE;
}
else if (type == GTK_TYPE_BORDER)
{
GtkBorder *border;
border = border_parse_str (value_str, &end);
g_value_take_boxed (value, border);
}
else if (type == CAIRO_GOBJECT_TYPE_PATTERN)
{
GtkGradient *gradient;
gradient = gradient_parse_str (value_str, &end);
if (gradient)
{
g_value_unset (value);
g_value_init (value, GTK_TYPE_GRADIENT);
g_value_take_boxed (value, gradient);
}
else
{
gchar *path;
GdkPixbuf *pixbuf;
g_clear_error (error);
path = path_parse_str (css_provider, value_str, &end, error);
if (path)
{
pixbuf = gdk_pixbuf_new_from_file (path, NULL);
g_free (path);
if (pixbuf)
{
cairo_surface_t *surface;
cairo_pattern_t *pattern;
cairo_t *cr;
cairo_matrix_t matrix;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cr = cairo_create (surface);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_paint (cr);
pattern = cairo_pattern_create_for_surface (surface);
cairo_matrix_init_scale (&matrix,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
cairo_pattern_set_matrix (pattern, &matrix);
cairo_surface_destroy (surface);
cairo_destroy (cr);
g_object_unref (pixbuf);
g_value_take_boxed (value, pattern);
}
else
parsed = FALSE;
}
else
parsed = FALSE;
}
}
else if (G_TYPE_IS_ENUM (type))
{
GEnumClass *enum_class;
GEnumValue *enum_value;
enum_class = g_type_class_ref (type);
enum_value = g_enum_get_value_by_nick (enum_class, value_str);
if (!enum_value)
{
g_set_error (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Unknown value '%s' for enum type '%s'",
value_str, g_type_name (type));
parsed = FALSE;
}
else
g_value_set_enum (value, enum_value->value);
g_type_class_unref (enum_class);
}
else if (G_TYPE_IS_FLAGS (type))
{
GFlagsClass *flags_class;
GFlagsValue *flag_value;
guint flags = 0;
gchar *ptr;
flags_class = g_type_class_ref (type);
/* Parse comma separated values */
ptr = strchr (value_str, ',');
while (ptr && parsed)
{
gchar *flag_str;
*ptr = '\0';
ptr++;
flag_str = (gchar *) value_str;
flag_value = g_flags_get_value_by_nick (flags_class,
g_strstrip (flag_str));
if (!flag_value)
{
g_set_error (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Unknown flag '%s' for type '%s'",
value_str, g_type_name (type));
parsed = FALSE;
}
else
flags |= flag_value->value;
value_str = ptr;
ptr = strchr (value_str, ',');
}
/* Store last/only value */
flag_value = g_flags_get_value_by_nick (flags_class, value_str);
if (!flag_value)
{
g_set_error (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Unknown flag '%s' for type '%s'",
value_str, g_type_name (type));
parsed = FALSE;
}
else
flags |= flag_value->value;
if (parsed)
g_value_set_enum (value, flags);
g_type_class_unref (flags_class);
}
else if (type == GTK_TYPE_9SLICE)
{
Gtk9Slice *slice;
slice = slice_parse_str (css_provider, value_str, &end, error);
if (slice)
g_value_take_boxed (value, slice);
else
parsed = FALSE;
}
else
{
g_set_error (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Cannot parse string '%s' for type %s",
value_str, g_type_name (type));
parsed = FALSE;
}
if (end && *end)
{
/* Set error position in the scanner
* according to what we've parsed so far
*/
priv->value_pos += (end - value_str);
if (error && !*error)
g_set_error_literal (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Failed to parse value");
}
return parsed;
}
static void
scanner_report_warning (GtkCssProvider *css_provider,
GTokenType expected_token,
GError *error)
{
GtkCssProviderPrivate *priv;
const gchar *line_end, *line_start;
const gchar *expected_str;
gchar buf[2], *line, *str;
guint pos;
priv = css_provider->priv;
if (error)
str = g_strdup (error->message);
else
{
if (priv->scanner->user_data)
expected_str = priv->scanner->user_data;
else
{
switch (expected_token)
{
case G_TOKEN_SYMBOL:
expected_str = "Symbol";
case G_TOKEN_IDENTIFIER:
expected_str = "Identifier";
default:
buf[0] = expected_token;
buf[1] = '\0';
expected_str = buf;
}
}
str = g_strdup_printf ("Parse error, expecting a %s '%s'",
(expected_str != buf) ? "valid" : "",
expected_str);
}
if (priv->value_pos)
line_start = priv->value_pos - 1;
else
line_start = priv->scanner->text - 1;
while (*line_start != '\n' &&
line_start != priv->buffer)
line_start--;
if (*line_start == '\n')
line_start++;
if (priv->value_pos)
pos = priv->value_pos - line_start + 1;
else
pos = priv->scanner->text - line_start - 1;
line_end = strchr (line_start, '\n');
if (line_end)
line = g_strndup (line_start, (line_end - line_start));
else
line = g_strdup (line_start);
g_message ("CSS: %s\n"
"%s, line %d, char %d:\n"
"%*c %s\n"
"%*c ^",
str, priv->scanner->input_name,
priv->scanner->line, priv->scanner->position,
3, ' ', line,
3 + pos, ' ');
g_free (line);
g_free (str);
}
static GTokenType
parse_rule (GtkCssProvider *css_provider,
GScanner *scanner,
GError **error)
{
GtkCssProviderPrivate *priv;
GTokenType expected_token;
SelectorPath *selector;
priv = css_provider->priv;
css_provider_push_scope (css_provider, SCOPE_SELECTOR);
/* Handle directives */
if (scanner->token == G_TOKEN_IDENTIFIER &&
scanner->value.v_identifier[0] == '@')
{
gchar *directive;
directive = &scanner->value.v_identifier[1];
if (strcmp (directive, "define-color") == 0)
{
GtkSymbolicColor *color;
gchar *color_name, *color_str;
/* Directive is a color mapping */
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_IDENTIFIER)
{
scanner->user_data = "Color name";
return G_TOKEN_IDENTIFIER;
}
color_name = g_strdup (scanner->value.v_identifier);
css_provider_push_scope (css_provider, SCOPE_VALUE);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_IDENTIFIER)
{
scanner->user_data = "Color definition";
return G_TOKEN_IDENTIFIER;
}
color_str = g_strstrip (scanner->value.v_identifier);
color = symbolic_color_parse (color_str, error);
if (!color)
{
scanner->user_data = "Color definition";
return G_TOKEN_IDENTIFIER;
}
g_hash_table_insert (priv->symbolic_colors, color_name, color);
css_provider_pop_scope (css_provider);
g_scanner_get_next_token (scanner);
if (scanner->token != ';')
return ';';
return G_TOKEN_NONE;
}
else if (strcmp (directive, "import") == 0)
{
GScanner *scanner_backup;
GSList *state_backup;
gboolean loaded;
gchar *path = NULL;
css_provider_push_scope (css_provider, SCOPE_VALUE);
g_scanner_get_next_token (scanner);
if (scanner->token == G_TOKEN_IDENTIFIER &&
g_str_has_prefix (scanner->value.v_identifier, "url"))
path = path_parse (css_provider,
g_strstrip (scanner->value.v_identifier),
error);
else if (scanner->token == G_TOKEN_STRING)
path = path_parse (css_provider,
g_strstrip (scanner->value.v_string),
error);
if (path == NULL)
{
scanner->user_data = "File URL";
return G_TOKEN_IDENTIFIER;
}
css_provider_pop_scope (css_provider);
g_scanner_get_next_token (scanner);
if (scanner->token != ';')
{
g_free (path);
return ';';
}
/* Snapshot current parser state and scanner in order to restore after importing */
state_backup = priv->state;
scanner_backup = priv->scanner;
priv->state = NULL;
priv->scanner = create_scanner ();
/* FIXME: Avoid recursive importing */
loaded = gtk_css_provider_load_from_path_internal (css_provider, path,
FALSE, error);
/* Restore previous state */
css_provider_reset_parser (css_provider);
priv->state = state_backup;
g_scanner_destroy (priv->scanner);
priv->scanner = scanner_backup;
g_free (path);
if (!loaded)
{
scanner->user_data = "File URL";
return G_TOKEN_IDENTIFIER;
}
else
return G_TOKEN_NONE;
}
else
{
scanner->user_data = "Directive";
return G_TOKEN_IDENTIFIER;
}
}
expected_token = parse_selector (css_provider, scanner, &selector);
if (expected_token != G_TOKEN_NONE)
{
selector_path_unref (selector);
scanner->user_data = "Selector";
return expected_token;
}
priv->cur_selectors = g_slist_prepend (priv->cur_selectors, selector);
while (scanner->token == ',')
{
g_scanner_get_next_token (scanner);
expected_token = parse_selector (css_provider, scanner, &selector);
if (expected_token != G_TOKEN_NONE)
{
selector_path_unref (selector);
scanner->user_data = "Selector";
return expected_token;
}
priv->cur_selectors = g_slist_prepend (priv->cur_selectors, selector);
}
css_provider_pop_scope (css_provider);
if (scanner->token != G_TOKEN_LEFT_CURLY)
return G_TOKEN_LEFT_CURLY;
/* Declarations parsing */
css_provider_push_scope (css_provider, SCOPE_DECLARATION);
g_scanner_get_next_token (scanner);
while (scanner->token == G_TOKEN_IDENTIFIER)
{
gchar *value_str = NULL;
GtkStylePropertyParser parse_func = NULL;
GParamSpec *pspec;
gchar *prop;
prop = g_strdup (scanner->value.v_identifier);
g_scanner_get_next_token (scanner);
if (scanner->token != ':')
{
g_free (prop);
return ':';
}
priv->value_pos = priv->scanner->text;
css_provider_push_scope (css_provider, SCOPE_VALUE);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_IDENTIFIER)
{
g_free (prop);
scanner->user_data = "Property value";
return G_TOKEN_IDENTIFIER;
}
value_str = scanner->value.v_identifier;
SKIP_SPACES (value_str);
g_strchomp (value_str);
if (gtk_style_properties_lookup_property (prop, &parse_func, &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 (priv->cur_properties, prop, val);
}
else if (pspec->value_type == G_TYPE_STRING)
{
g_value_set_string (val, value_str);
g_hash_table_insert (priv->cur_properties, prop, val);
}
else if ((parse_func && (parse_func) (value_str, val, error)) ||
(!parse_func && css_provider_parse_value (css_provider, value_str, val, error)))
g_hash_table_insert (priv->cur_properties, prop, val);
else
{
g_value_unset (val);
g_slice_free (GValue, val);
g_free (prop);
scanner->user_data = "Property value";
return G_TOKEN_IDENTIFIER;
}
}
else if (prop[0] == '-' &&
g_ascii_isupper (prop[1]))
{
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 (priv->cur_properties, prop, val);
}
else
g_free (prop);
css_provider_pop_scope (css_provider);
g_scanner_get_next_token (scanner);
if (scanner->token != ';')
break;
g_scanner_get_next_token (scanner);
}
if (scanner->token != G_TOKEN_RIGHT_CURLY)
return G_TOKEN_RIGHT_CURLY;
css_provider_pop_scope (css_provider);
return G_TOKEN_NONE;
}
static gboolean
parse_stylesheet (GtkCssProvider *css_provider,
GError **error)
{
GtkCssProviderPrivate *priv;
gboolean result;
result = TRUE;
priv = css_provider->priv;
g_scanner_get_next_token (priv->scanner);
while (!g_scanner_eof (priv->scanner))
{
GTokenType expected_token;
GError *err = NULL;
css_provider_reset_parser (css_provider);
expected_token = parse_rule (css_provider, priv->scanner, &err);
if (expected_token != G_TOKEN_NONE)
{
/* If a GError was passed in, propagate the error and bail out,
* else report a warning and keep going
*/
if (error != NULL)
{
result = FALSE;
if (err)
g_propagate_error (error, err);
else
g_set_error_literal (error,
GTK_CSS_PROVIDER_ERROR,
GTK_CSS_PROVIDER_ERROR_FAILED,
"Error parsing stylesheet");
break;
}
else
{
scanner_report_warning (css_provider, expected_token, err);
g_clear_error (&err);
}
while (!g_scanner_eof (priv->scanner) &&
priv->scanner->token != G_TOKEN_RIGHT_CURLY)
g_scanner_get_next_token (priv->scanner);
}
else
css_provider_commit (css_provider);
g_scanner_get_next_token (priv->scanner);
}
return result;
}
/**
* 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)
{
GtkCssProviderPrivate *priv;
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (data != NULL, FALSE);
priv = css_provider->priv;
if (length < 0)
length = strlen (data);
if (priv->selectors_info->len > 0)
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
priv->scanner->input_name = "-";
priv->buffer = data;
g_scanner_input_text (priv->scanner, data, (guint) length);
g_free (priv->filename);
priv->filename = NULL;
priv->buffer = NULL;
return parse_stylesheet (css_provider, 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)
{
GtkCssProviderPrivate *priv;
GError *internal_error = NULL;
gchar *data;
gsize length;
gboolean ret;
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (G_IS_FILE (file), FALSE);
priv = css_provider->priv;
if (!g_file_load_contents (file, NULL,
&data, &length,
NULL, &internal_error))
{
g_propagate_error (error, internal_error);
return FALSE;
}
if (priv->selectors_info->len > 0)
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
g_free (priv->filename);
priv->filename = g_file_get_path (file);
priv->scanner->input_name = priv->filename;
priv->buffer = data;
g_scanner_input_text (priv->scanner, data, (guint) length);
ret = parse_stylesheet (css_provider, error);
priv->buffer = NULL;
g_free (data);
return ret;
}
static gboolean
gtk_css_provider_load_from_path_internal (GtkCssProvider *css_provider,
const gchar *path,
gboolean reset,
GError **error)
{
GtkCssProviderPrivate *priv;
GError *internal_error = NULL;
GMappedFile *mapped_file;
const gchar *data;
gsize length;
gboolean ret;
priv = css_provider->priv;
mapped_file = g_mapped_file_new (path, FALSE, &internal_error);
if (internal_error)
{
g_propagate_error (error, internal_error);
return FALSE;
}
length = g_mapped_file_get_length (mapped_file);
data = g_mapped_file_get_contents (mapped_file);
if (!data)
data = "";
if (reset)
{
if (priv->selectors_info->len > 0)
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
g_free (priv->filename);
priv->filename = g_strdup (path);
}
priv->scanner->input_name = priv->filename;
priv->buffer = data;
g_scanner_input_text (priv->scanner, data, (guint) length);
ret = parse_stylesheet (css_provider, error);
priv->buffer = NULL;
g_mapped_file_unref (mapped_file);
return ret;
}
/**
* 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)
{
g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
return gtk_css_provider_load_from_path_internal (css_provider, path,
TRUE, error);
}
/**
* 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"
"\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"
"GtkTreeView > GtkButton {\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 {\n"
" color: #fff;\n"
"}\n"
"\n"
".expander:prelight {\n"
" color: @text_color;\n"
"}\n"
"\n"
".expander:active {\n"
" transition: 300ms 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"
"GtkTreeView, GtkIconView, GtkTextView {\n"
" background-color: @base_color;\n"
" color: @text_color;\n"
"}\n"
"\n"
"GtkTreeView > row {\n"
" background-color: @base_color;\n"
" color: @text_color;\n"
"}\n"
"\n"
"GtkTreeView > row:nth-child(odd) { \n"
" background-color: shade (@base_color, 0.93); \n"
"}\n"
"\n"
".tooltip {\n"
" background-color: @tooltip_bg_color; \n"
" color: @tooltip_fg_color; \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"
" border-style: inset;\n"
" border-width: 1;\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:prelight,\n"
".entry.progressbar {\n"
" background-color: @selected_bg_color;\n"
" border-color: shade (@selected_bg_color, 0.7);\n"
" color: @selected_fg_color;\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,\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"
" border-style: solid;\n"
" border-width: 1;\n"
"}\n"
"\n"
".check:selected, .radio:selected {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".menu.check, .menu.radio {\n"
" color: @fg_color;\n"
"}\n"
"\n"
".menu:hover {\n"
" background-color: @selected_bg_color;\n"
" border-style: none;\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"
".menu,\n"
".menubar,\n"
".toolbar {\n"
" border-style: outset;\n"
" border-width: 1;\n"
"}\n"
"\n"
".menu:hover,\n"
".menubar:hover {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_color;\n"
"}\n"
"\n"
".menu .check,\n"
".menu .radio,\n"
".menu .check:active,\n"
".menu .radio:active {\n"
" border-style: none;\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"
"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"
" color: @fg_color;\n"
"}\n"
"\n"
"GtkLabel:selected:focused {\n"
" background-color: @selected_bg_color;\n"
" color: @selected_fg_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";
provider = gtk_css_provider_new ();
gtk_css_provider_load_from_data (provider, str, -1, NULL);
}
return provider;
}
static gchar *
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: 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;
if (G_UNLIKELY (!themes))
themes = g_hash_table_new (g_str_hash, g_str_equal);
provider = g_hash_table_lookup (themes, name);
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 = 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 = NULL;
provider = gtk_css_provider_new ();
gtk_css_provider_load_from_path (provider, path, &error);
if (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 (name), provider);
}
}
return provider;
}
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