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Themeable Stock Images

Themeable Stock Images — Manipulating stock icons

Functions

GtkIconSource * gtk_icon_source_copy ()
void gtk_icon_source_free ()
void gtk_icon_factory_add ()
void gtk_icon_factory_add_default ()
GtkIconSet * gtk_icon_factory_lookup ()
GtkIconSet * gtk_icon_factory_lookup_default ()
GtkIconFactory * gtk_icon_factory_new ()
void gtk_icon_factory_remove_default ()
void gtk_icon_set_add_source ()
GtkIconSet * gtk_icon_set_copy ()
GtkIconSet * gtk_icon_set_new ()
GtkIconSet * gtk_icon_set_new_from_pixbuf ()
GtkIconSet * gtk_icon_set_ref ()
GdkPixbuf * gtk_icon_set_render_icon ()
void gtk_icon_set_unref ()
gboolean gtk_icon_size_lookup ()
gboolean gtk_icon_size_lookup_for_settings ()
GtkIconSize gtk_icon_size_register ()
void gtk_icon_size_register_alias ()
GtkIconSize gtk_icon_size_from_name ()
const gchar * gtk_icon_size_get_name ()
void gtk_icon_set_get_sizes ()
GtkTextDirection gtk_icon_source_get_direction ()
gboolean gtk_icon_source_get_direction_wildcarded ()
GdkPixbuf * gtk_icon_source_get_pixbuf ()
const gchar * gtk_icon_source_get_icon_name ()
GtkIconSize gtk_icon_source_get_size ()
gboolean gtk_icon_source_get_size_wildcarded ()
GtkStateType gtk_icon_source_get_state ()
gboolean gtk_icon_source_get_state_wildcarded ()
GtkIconSource * gtk_icon_source_new ()
void gtk_icon_source_set_direction ()
void gtk_icon_source_set_direction_wildcarded ()
void gtk_icon_source_set_pixbuf ()
void gtk_icon_source_set_icon_name ()
void gtk_icon_source_set_size ()
void gtk_icon_source_set_size_wildcarded ()
void gtk_icon_source_set_state ()
void gtk_icon_source_set_state_wildcarded ()

Object Hierarchy

    GBoxed
    ╰── GtkIconSet
    GObject
    ╰── GtkIconFactory

Implemented Interfaces

GtkIconFactory implements GtkBuildable.

Includes

#include <gtk/gtk.h>

Description

Browse the available stock icons in the list of stock IDs found here. You can also use the gtk-demo application for this purpose.

An icon factory manages a collection of GtkIconSet; a GtkIconSet manages a set of variants of a particular icon (i.e. a GtkIconSet contains variants for different sizes and widget states). Icons in an icon factory are named by a stock ID, which is a simple string identifying the icon. Each GtkStyle has a list of GtkIconFactory derived from the current theme; those icon factories are consulted first when searching for an icon. If the theme doesn't set a particular icon, GTK+ looks for the icon in a list of default icon factories, maintained by gtk_icon_factory_add_default() and gtk_icon_factory_remove_default(). Applications with icons should add a default icon factory with their icons, which will allow themes to override the icons for the application.

To display an icon, always use gtk_style_lookup_icon_set() on the widget that will display the icon, or the convenience function gtk_widget_render_icon(). These functions take the theme into account when looking up the icon to use for a given stock ID.

GtkIconFactory as GtkBuildable

GtkIconFactory supports a custom <sources> element, which can contain multiple <source> elements. The following attributes are allowed:

stock-id

The stock id of the source, a string. This attribute is mandatory

filename

The filename of the source, a string. This attribute is optional

icon-name

The icon name for the source, a string. This attribute is optional.

size

Size of the icon, a GtkIconSize enum value. This attribute is optional.

direction

Direction of the source, a GtkTextDirection enum value. This attribute is optional.

state

State of the source, a GtkStateType enum value. This attribute is optional.

Example 5. A GtkIconFactory UI definition fragment.

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<object class="GtkIconFactory" id="iconfactory1">
  <sources>
    <source stock-id="apple-red" filename="apple-red.png"/>
  </sources>
</object>
<object class="GtkWindow" id="window1">
  <child>
    <object class="GtkButton" id="apple_button">
      <property name="label">apple-red</property>
      <property name="use-stock">True</property>
    </object>
  </child>
</object>

Functions

gtk_icon_source_copy ()

GtkIconSource *
gtk_icon_source_copy (const GtkIconSource *source);

Creates a copy of source ; mostly useful for language bindings.

Parameters

source

a GtkIconSource

 

Returns

a new GtkIconSource


gtk_icon_source_free ()

void
gtk_icon_source_free (GtkIconSource *source);

Frees a dynamically-allocated icon source, along with its filename, size, and pixbuf fields if those are not NULL.

Parameters

source

a GtkIconSource

 

gtk_icon_factory_add ()

void
gtk_icon_factory_add (GtkIconFactory *factory,
                      const gchar *stock_id,
                      GtkIconSet *icon_set);

Adds the given icon_set to the icon factory, under the name stock_id . stock_id should be namespaced for your application, e.g. "myapp-whatever-icon". Normally applications create a GtkIconFactory, then add it to the list of default factories with gtk_icon_factory_add_default(). Then they pass the stock_id to widgets such as GtkImage to display the icon. Themes can provide an icon with the same name (such as "myapp-whatever-icon") to override your application's default icons. If an icon already existed in factory for stock_id , it is unreferenced and replaced with the new icon_set .

Parameters

factory

a GtkIconFactory

 

stock_id

icon name

 

icon_set

icon set

 

gtk_icon_factory_add_default ()

void
gtk_icon_factory_add_default (GtkIconFactory *factory);

Adds an icon factory to the list of icon factories searched by gtk_style_lookup_icon_set(). This means that, for example, gtk_image_new_from_stock() will be able to find icons in factory . There will normally be an icon factory added for each library or application that comes with icons. The default icon factories can be overridden by themes.

Parameters

factory

a GtkIconFactory

 

gtk_icon_factory_lookup ()

GtkIconSet *
gtk_icon_factory_lookup (GtkIconFactory *factory,
                         const gchar *stock_id);

Looks up stock_id in the icon factory, returning an icon set if found, otherwise NULL. For display to the user, you should use gtk_style_lookup_icon_set() on the GtkStyle for the widget that will display the icon, instead of using this function directly, so that themes are taken into account.

Parameters

factory

a GtkIconFactory

 

stock_id

an icon name

 

Returns

icon set of stock_id .

[transfer none]


gtk_icon_factory_lookup_default ()

GtkIconSet *
gtk_icon_factory_lookup_default (const gchar *stock_id);

Looks for an icon in the list of default icon factories. For display to the user, you should use gtk_style_lookup_icon_set() on the GtkStyle for the widget that will display the icon, instead of using this function directly, so that themes are taken into account.

Parameters

stock_id

an icon name

 

Returns

a GtkIconSet, or NULL.

[transfer none]


gtk_icon_factory_new ()

GtkIconFactory *
gtk_icon_factory_new (void);

Creates a new GtkIconFactory. An icon factory manages a collection of GtkIconSets; a GtkIconSet manages a set of variants of a particular icon (i.e. a GtkIconSet contains variants for different sizes and widget states). Icons in an icon factory are named by a stock ID, which is a simple string identifying the icon. Each GtkStyle has a list of GtkIconFactorys derived from the current theme; those icon factories are consulted first when searching for an icon. If the theme doesn't set a particular icon, GTK+ looks for the icon in a list of default icon factories, maintained by gtk_icon_factory_add_default() and gtk_icon_factory_remove_default(). Applications with icons should add a default icon factory with their icons, which will allow themes to override the icons for the application.

Returns

a new GtkIconFactory


gtk_icon_factory_remove_default ()

void
gtk_icon_factory_remove_default (GtkIconFactory *factory);

Removes an icon factory from the list of default icon factories. Not normally used; you might use it for a library that can be unloaded or shut down.

Parameters

factory

a GtkIconFactory previously added with gtk_icon_factory_add_default()

 

gtk_icon_set_add_source ()

void
gtk_icon_set_add_source (GtkIconSet *icon_set,
                         const GtkIconSource *source);

Icon sets have a list of GtkIconSource, which they use as base icons for rendering icons in different states and sizes. Icons are scaled, made to look insensitive, etc. in gtk_icon_set_render_icon(), but GtkIconSet needs base images to work with. The base images and when to use them are described by a GtkIconSource.

This function copies source , so you can reuse the same source immediately without affecting the icon set.

An example of when you'd use this function: a web browser's "Back to Previous Page" icon might point in a different direction in Hebrew and in English; it might look different when insensitive; and it might change size depending on toolbar mode (small/large icons). So a single icon set would contain all those variants of the icon, and you might add a separate source for each one.

You should nearly always add a "default" icon source with all fields wildcarded, which will be used as a fallback if no more specific source matches. GtkIconSet always prefers more specific icon sources to more generic icon sources. The order in which you add the sources to the icon set does not matter.

gtk_icon_set_new_from_pixbuf() creates a new icon set with a default icon source based on the given pixbuf.

Parameters

icon_set

a GtkIconSet

 

source

a GtkIconSource

 

gtk_icon_set_copy ()

GtkIconSet *
gtk_icon_set_copy (GtkIconSet *icon_set);

Copies icon_set by value.

Parameters

icon_set

a GtkIconSet

 

Returns

a new GtkIconSet identical to the first.


gtk_icon_set_new ()

GtkIconSet *
gtk_icon_set_new (void);

Creates a new GtkIconSet. A GtkIconSet represents a single icon in various sizes and widget states. It can provide a GdkPixbuf for a given size and state on request, and automatically caches some of the rendered GdkPixbuf objects.

Normally you would use gtk_widget_render_icon() instead of using GtkIconSet directly. The one case where you'd use GtkIconSet is to create application-specific icon sets to place in a GtkIconFactory.

Returns

a new GtkIconSet


gtk_icon_set_new_from_pixbuf ()

GtkIconSet *
gtk_icon_set_new_from_pixbuf (GdkPixbuf *pixbuf);

Creates a new GtkIconSet with pixbuf as the default/fallback source image. If you don't add any additional GtkIconSource to the icon set, all variants of the icon will be created from pixbuf , using scaling, pixelation, etc. as required to adjust the icon size or make the icon look insensitive/prelighted.

Parameters

pixbuf

a GdkPixbuf

 

Returns

a new GtkIconSet


gtk_icon_set_ref ()

GtkIconSet *
gtk_icon_set_ref (GtkIconSet *icon_set);

Increments the reference count on icon_set .

Parameters

icon_set

a GtkIconSet.

 

Returns

icon_set .


gtk_icon_set_render_icon ()

GdkPixbuf *
gtk_icon_set_render_icon (GtkIconSet *icon_set,
                          GtkStyle *style,
                          GtkTextDirection direction,
                          GtkStateType state,
                          GtkIconSize size,
                          GtkWidget *widget,
                          const char *detail);

Renders an icon using gtk_style_render_icon(). In most cases, gtk_widget_render_icon() is better, since it automatically provides most of the arguments from the current widget settings. This function never returns NULL; if the icon can't be rendered (perhaps because an image file fails to load), a default "missing image" icon will be returned instead.

Parameters

icon_set

a GtkIconSet

 

style

a GtkStyle associated with widget , or NULL.

[allow-none]

direction

text direction

 

state

widget state

 

size

icon size. A size of (GtkIconSize)-1 means render at the size of the source and don't scale.

[type int]

widget

widget that will display the icon, or NULL. The only use that is typically made of this is to determine the appropriate GdkScreen.

[allow-none]

detail

detail to pass to the theme engine, or NULL. Note that passing a detail of anything but NULL will disable caching.

[allow-none]

Returns

a GdkPixbuf to be displayed.

[transfer full]


gtk_icon_set_unref ()

void
gtk_icon_set_unref (GtkIconSet *icon_set);

Decrements the reference count on icon_set , and frees memory if the reference count reaches 0.

Parameters

icon_set

a GtkIconSet

 

gtk_icon_size_lookup ()

gboolean
gtk_icon_size_lookup (GtkIconSize size,
                      gint *width,
                      gint *height);

Obtains the pixel size of a semantic icon size, possibly modified by user preferences for the default GtkSettings. (See gtk_icon_size_lookup_for_settings().) Normally size would be GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function isn't normally needed, gtk_widget_render_icon() is the usual way to get an icon for rendering, then just look at the size of the rendered pixbuf. The rendered pixbuf may not even correspond to the width/height returned by gtk_icon_size_lookup(), because themes are free to render the pixbuf however they like, including changing the usual size.

Parameters

size

an icon size.

[type int]

width

location to store icon width.

[out]

height

location to store icon height.

[out]

Returns

TRUE if size was a valid size


gtk_icon_size_lookup_for_settings ()

gboolean
gtk_icon_size_lookup_for_settings (GtkSettings *settings,
                                   GtkIconSize size,
                                   gint *width,
                                   gint *height);

Obtains the pixel size of a semantic icon size, possibly modified by user preferences for a particular GtkSettings. Normally size would be GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function isn't normally needed, gtk_widget_render_icon() is the usual way to get an icon for rendering, then just look at the size of the rendered pixbuf. The rendered pixbuf may not even correspond to the width/height returned by gtk_icon_size_lookup(), because themes are free to render the pixbuf however they like, including changing the usual size.

Parameters

settings

a GtkSettings object, used to determine which set of user preferences to used.

 

size

an icon size.

[type int]

width

location to store icon width.

[out]

height

location to store icon height.

[out]

Returns

TRUE if size was a valid size

Since: 2.2


gtk_icon_size_register ()

GtkIconSize
gtk_icon_size_register (const gchar *name,
                        gint width,
                        gint height);

Registers a new icon size, along the same lines as GTK_ICON_SIZE_MENU, etc. Returns the integer value for the size.

Parameters

name

name of the icon size

 

width

the icon width

 

height

the icon height

 

Returns

integer value representing the size.

[type int]


gtk_icon_size_register_alias ()

void
gtk_icon_size_register_alias (const gchar *alias,
                              GtkIconSize target);

Registers alias as another name for target . So calling gtk_icon_size_from_name() with alias as argument will return target .

Parameters

alias

an alias for target

 

target

an existing icon size.

[type int]

gtk_icon_size_from_name ()

GtkIconSize
gtk_icon_size_from_name (const gchar *name);

Looks up the icon size associated with name .

Parameters

name

the name to look up.

 

Returns

the icon size with the given name.


gtk_icon_size_get_name ()

const gchar *
gtk_icon_size_get_name (GtkIconSize size);

Gets the canonical name of the given icon size. The returned string is statically allocated and should not be freed.

Parameters

size

a GtkIconSize.

[type int]

Returns

the name of the given icon size.


gtk_icon_set_get_sizes ()

void
gtk_icon_set_get_sizes (GtkIconSet *icon_set,
                        GtkIconSize **sizes,
                        gint *n_sizes);

Obtains a list of icon sizes this icon set can render. The returned array must be freed with g_free().

Parameters

icon_set

a GtkIconSet

 

sizes

return location for array of sizes.

[array length=n_sizes][out][type int]

n_sizes

location to store number of elements in returned array

 

gtk_icon_source_get_direction ()

GtkTextDirection
gtk_icon_source_get_direction (const GtkIconSource *source);

Obtains the text direction this icon source applies to. The return value is only useful/meaningful if the text direction is not wildcarded.

Parameters

source

a GtkIconSource

 

Returns

text direction this source matches


gtk_icon_source_get_direction_wildcarded ()

gboolean
gtk_icon_source_get_direction_wildcarded
                               (const GtkIconSource *source);

Gets the value set by gtk_icon_source_set_direction_wildcarded().

Parameters

source

a GtkIconSource

 

Returns

TRUE if this icon source is a base for any text direction variant


gtk_icon_source_get_pixbuf ()

GdkPixbuf *
gtk_icon_source_get_pixbuf (const GtkIconSource *source);

Retrieves the source pixbuf, or NULL if none is set. In addition, if a filename source is in use, this function in some cases will return the pixbuf from loaded from the filename. This is, for example, true for the GtkIconSource passed to the GtkStyle::render_icon() virtual function. The reference count on the pixbuf is not incremented.

Parameters

source

a GtkIconSource

 

Returns

source pixbuf.

[transfer none]


gtk_icon_source_get_icon_name ()

const gchar *
gtk_icon_source_get_icon_name (const GtkIconSource *source);

Retrieves the source icon name, or NULL if none is set. The icon_name is not a copy, and should not be modified or expected to persist beyond the lifetime of the icon source.

Parameters

source

a GtkIconSource

 

Returns

icon name. This string must not be modified or freed.


gtk_icon_source_get_size ()

GtkIconSize
gtk_icon_source_get_size (const GtkIconSource *source);

Obtains the icon size this source applies to. The return value is only useful/meaningful if the icon size is not wildcarded.

Parameters

source

a GtkIconSource

 

Returns

icon size this source matches.

[type int]


gtk_icon_source_get_size_wildcarded ()

gboolean
gtk_icon_source_get_size_wildcarded (const GtkIconSource *source);

Gets the value set by gtk_icon_source_set_size_wildcarded().

Parameters

source

a GtkIconSource

 

Returns

TRUE if this icon source is a base for any icon size variant


gtk_icon_source_get_state ()

GtkStateType
gtk_icon_source_get_state (const GtkIconSource *source);

Obtains the widget state this icon source applies to. The return value is only useful/meaningful if the widget state is not wildcarded.

Parameters

source

a GtkIconSource

 

Returns

widget state this source matches


gtk_icon_source_get_state_wildcarded ()

gboolean
gtk_icon_source_get_state_wildcarded (const GtkIconSource *source);

Gets the value set by gtk_icon_source_set_state_wildcarded().

Parameters

source

a GtkIconSource

 

Returns

TRUE if this icon source is a base for any widget state variant


gtk_icon_source_new ()

GtkIconSource *
gtk_icon_source_new (void);

Creates a new GtkIconSource. A GtkIconSource contains a GdkPixbuf (or image filename) that serves as the base image for one or more of the icons in a GtkIconSet, along with a specification for which icons in the icon set will be based on that pixbuf or image file. An icon set contains a set of icons that represent "the same" logical concept in different states, different global text directions, and different sizes.

So for example a web browser's "Back to Previous Page" icon might point in a different direction in Hebrew and in English; it might look different when insensitive; and it might change size depending on toolbar mode (small/large icons). So a single icon set would contain all those variants of the icon. GtkIconSet contains a list of GtkIconSource from which it can derive specific icon variants in the set.

In the simplest case, GtkIconSet contains one source pixbuf from which it derives all variants. The convenience function gtk_icon_set_new_from_pixbuf() handles this case; if you only have one source pixbuf, just use that function.

If you want to use a different base pixbuf for different icon variants, you create multiple icon sources, mark which variants they'll be used to create, and add them to the icon set with gtk_icon_set_add_source().

By default, the icon source has all parameters wildcarded. That is, the icon source will be used as the base icon for any desired text direction, widget state, or icon size.

Returns

a new GtkIconSource


gtk_icon_source_set_direction ()

void
gtk_icon_source_set_direction (GtkIconSource *source,
                               GtkTextDirection direction);

Sets the text direction this icon source is intended to be used with.

Setting the text direction on an icon source makes no difference if the text direction is wildcarded. Therefore, you should usually call gtk_icon_source_set_direction_wildcarded() to un-wildcard it in addition to calling this function.

Parameters

source

a GtkIconSource

 

direction

text direction this source applies to

 

gtk_icon_source_set_direction_wildcarded ()

void
gtk_icon_source_set_direction_wildcarded
                               (GtkIconSource *source,
                                gboolean setting);

If the text direction is wildcarded, this source can be used as the base image for an icon in any GtkTextDirection. If the text direction is not wildcarded, then the text direction the icon source applies to should be set with gtk_icon_source_set_direction(), and the icon source will only be used with that text direction.

GtkIconSet prefers non-wildcarded sources (exact matches) over wildcarded sources, and will use an exact match when possible.

Parameters

source

a GtkIconSource

 

setting

TRUE to wildcard the text direction

 

gtk_icon_source_set_pixbuf ()

void
gtk_icon_source_set_pixbuf (GtkIconSource *source,
                            GdkPixbuf *pixbuf);

Sets a pixbuf to use as a base image when creating icon variants for GtkIconSet.

Parameters

source

a GtkIconSource

 

pixbuf

pixbuf to use as a source

 

gtk_icon_source_set_icon_name ()

void
gtk_icon_source_set_icon_name (GtkIconSource *source,
                               const gchar *icon_name);

Sets the name of an icon to look up in the current icon theme to use as a base image when creating icon variants for GtkIconSet.

Parameters

source

a GtkIconSource

 

icon_name

name of icon to use.

[allow-none]

gtk_icon_source_set_size ()

void
gtk_icon_source_set_size (GtkIconSource *source,
                          GtkIconSize size);

Sets the icon size this icon source is intended to be used with.

Setting the icon size on an icon source makes no difference if the size is wildcarded. Therefore, you should usually call gtk_icon_source_set_size_wildcarded() to un-wildcard it in addition to calling this function.

Parameters

source

a GtkIconSource

 

size

icon size this source applies to.

[type int]

gtk_icon_source_set_size_wildcarded ()

void
gtk_icon_source_set_size_wildcarded (GtkIconSource *source,
                                     gboolean setting);

If the icon size is wildcarded, this source can be used as the base image for an icon of any size. If the size is not wildcarded, then the size the source applies to should be set with gtk_icon_source_set_size() and the icon source will only be used with that specific size.

GtkIconSet prefers non-wildcarded sources (exact matches) over wildcarded sources, and will use an exact match when possible.

GtkIconSet will normally scale wildcarded source images to produce an appropriate icon at a given size, but will not change the size of source images that match exactly.

Parameters

source

a GtkIconSource

 

setting

TRUE to wildcard the widget state

 

gtk_icon_source_set_state ()

void
gtk_icon_source_set_state (GtkIconSource *source,
                           GtkStateType state);

Sets the widget state this icon source is intended to be used with.

Setting the widget state on an icon source makes no difference if the state is wildcarded. Therefore, you should usually call gtk_icon_source_set_state_wildcarded() to un-wildcard it in addition to calling this function.

Parameters

source

a GtkIconSource

 

state

widget state this source applies to

 

gtk_icon_source_set_state_wildcarded ()

void
gtk_icon_source_set_state_wildcarded (GtkIconSource *source,
                                      gboolean setting);

If the widget state is wildcarded, this source can be used as the base image for an icon in any GtkStateType. If the widget state is not wildcarded, then the state the source applies to should be set with gtk_icon_source_set_state() and the icon source will only be used with that specific state.

GtkIconSet prefers non-wildcarded sources (exact matches) over wildcarded sources, and will use an exact match when possible.

GtkIconSet will normally transform wildcarded source images to produce an appropriate icon for a given state, for example lightening an image on prelight, but will not modify source images that match exactly.

Parameters

source

a GtkIconSource

 

setting

TRUE to wildcard the widget state

 

Types and Values

GtkIconSource

typedef struct _GtkIconSource GtkIconSource;


GtkIconFactory

typedef struct _GtkIconFactory GtkIconFactory;


GtkIconSet

typedef struct _GtkIconSet GtkIconSet;


enum GtkIconSize

Members

GTK_ICON_SIZE_INVALID

   

GTK_ICON_SIZE_MENU

   

GTK_ICON_SIZE_SMALL_TOOLBAR

   

GTK_ICON_SIZE_LARGE_TOOLBAR

   

GTK_ICON_SIZE_BUTTON

   

GTK_ICON_SIZE_DND

   

GTK_ICON_SIZE_DIALOG

   

gtk_icon_source_get_filename

#define gtk_icon_source_get_filename gtk_icon_source_get_filename_utf8

Retrieves the source filename, or NULL if none is set. The filename is not a copy, and should not be modified or expected to persist beyond the lifetime of the icon source.

Returns

image filename. This string must not be modified or freed.


gtk_icon_source_set_filename

#define gtk_icon_source_set_filename gtk_icon_source_set_filename_utf8

Sets the name of an image file to use as a base image when creating icon variants for GtkIconSet. The filename must be absolute.

Parameters

source

a GtkIconSource

 

filename

image file to use

 
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