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gtk2/gtk/gtkiconfactory.c
Owen Taylor a72aed4ea2 Implement a loader for named themed icon based on from gnome-desktop 
Wed Jul  2 18:00:56 2003  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkicontheme.[ch]: Implement a loader for
        named themed icon based on from gnome-desktop library
        by Alex Larsson.

        * gtk/gtkiconthemeparser.[ch]: .ini file parsing code
        from gnome-desktop.

        * gtk/gtkiconfactory.[ch]: Add
        gtk_icon_source_set/get_icon_name() to allow stock icons
        to be based off of named theme icons.

        * gtk/gtkiconfactory.c: Rework sources so that the source
        is *either* a pixbuf, or a filename, or an icon name,
        instead of the pixbuf/filename mix it was before. Put a
        workaround for get_pixbuf() so that it can return the
        filename pixbuf, e.g, for render_icon().

        * gtk/gtkiconfactory.c: Make the default setup use
        themed icons, and add builtin icons to the default
        icon theme for all the standard pixbufs, so we
        don't rely on actually having an icon theme on disk.

        * gtk/gtkrc.c: Add support for @"icon-name" to specify
        a themed icon for a stock icon source.

        * tests/Makefile.am test/testicontheme.c: Add a test
        program from gnome-desktop.

        * gdk/x11/gdkevents-x11.c gtk/gtksettings.c: Add
        Net/IconThemeName / gtk-icon-theme-name setting.

        * gtk/gtkiconfactory.c (ensure_cache_up_to_date): Actually
        update the icon cache serial so we don't continually

        * gtk/gtkwidget.c: Fix a couple of references in doc comments
        to ::direction_set that should have been to ::direction-changed
2003-07-02 22:44:09 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
*
* 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <pango/pango-utils.h> /* For pango_scan_* */
#include "gtkiconfactory.h"
#include "stock-icons/gtkstockpixbufs.h"
#include "gtkdebug.h"
#include "gtkicontheme.h"
#include "gtksettings.h"
#include "gtkstock.h"
#include "gtkwidget.h"
#include "gtkintl.h"
static GSList *all_icon_factories = NULL;
typedef enum {
GTK_ICON_SOURCE_EMPTY,
GTK_ICON_SOURCE_ICON_NAME,
GTK_ICON_SOURCE_FILENAME,
GTK_ICON_SOURCE_PIXBUF
} GtkIconSourceType;
struct _GtkIconSource
{
GtkIconSourceType type;
union {
gchar *icon_name;
gchar *filename;
GdkPixbuf *pixbuf;
} source;
GdkPixbuf *filename_pixbuf;
GtkTextDirection direction;
GtkStateType state;
GtkIconSize size;
/* If TRUE, then the parameter is wildcarded, and the above
* fields should be ignored. If FALSE, the parameter is
* specified, and the above fields should be valid.
*/
guint any_direction : 1;
guint any_state : 1;
guint any_size : 1;
};
static gpointer parent_class = NULL;
static void gtk_icon_factory_init (GtkIconFactory *icon_factory);
static void gtk_icon_factory_class_init (GtkIconFactoryClass *klass);
static void gtk_icon_factory_finalize (GObject *object);
static void get_default_icons (GtkIconFactory *icon_factory);
static void icon_source_clear (GtkIconSource *source);
static GtkIconSize icon_size_register_intern (const gchar *name,
gint width,
gint height);
#define GTK_ICON_SOURCE_INIT(any_direction, any_state, any_size) \
{ GTK_ICON_SOURCE_EMPTY, { NULL }, NULL, \
0, 0, 0, \
any_direction, any_state, any_size }
GType
gtk_icon_factory_get_type (void)
{
static GType icon_factory_type = 0;
if (!icon_factory_type)
{
static const GTypeInfo icon_factory_info =
{
sizeof (GtkIconFactoryClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_icon_factory_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkIconFactory),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_icon_factory_init,
};
icon_factory_type =
g_type_register_static (G_TYPE_OBJECT, "GtkIconFactory",
&icon_factory_info, 0);
}
return icon_factory_type;
}
static void
gtk_icon_factory_init (GtkIconFactory *factory)
{
factory->icons = g_hash_table_new (g_str_hash, g_str_equal);
all_icon_factories = g_slist_prepend (all_icon_factories, factory);
}
static void
gtk_icon_factory_class_init (GtkIconFactoryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gtk_icon_factory_finalize;
}
static void
free_icon_set (gpointer key, gpointer value, gpointer data)
{
g_free (key);
gtk_icon_set_unref (value);
}
static void
gtk_icon_factory_finalize (GObject *object)
{
GtkIconFactory *factory = GTK_ICON_FACTORY (object);
all_icon_factories = g_slist_remove (all_icon_factories, factory);
g_hash_table_foreach (factory->icons, free_icon_set, NULL);
g_hash_table_destroy (factory->icons);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gtk_icon_factory_new:
*
* Creates a new #GtkIconFactory. An icon factory manages a collection
* of #GtkIconSet<!-- -->s; 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<!-- -->s 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.
*
* Return value: a new #GtkIconFactory
**/
GtkIconFactory*
gtk_icon_factory_new (void)
{
return g_object_new (GTK_TYPE_ICON_FACTORY, NULL);
}
/**
* gtk_icon_factory_add:
* @factory: a #GtkIconFactory
* @stock_id: icon name
* @icon_set: 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.
*
**/
void
gtk_icon_factory_add (GtkIconFactory *factory,
const gchar *stock_id,
GtkIconSet *icon_set)
{
gpointer old_key = NULL;
gpointer old_value = NULL;
g_return_if_fail (GTK_IS_ICON_FACTORY (factory));
g_return_if_fail (stock_id != NULL);
g_return_if_fail (icon_set != NULL);
g_hash_table_lookup_extended (factory->icons, stock_id,
&old_key, &old_value);
if (old_value == icon_set)
return;
gtk_icon_set_ref (icon_set);
/* GHashTable key memory management is so fantastically broken. */
if (old_key)
g_hash_table_insert (factory->icons, old_key, icon_set);
else
g_hash_table_insert (factory->icons, g_strdup (stock_id), icon_set);
if (old_value)
gtk_icon_set_unref (old_value);
}
/**
* gtk_icon_factory_lookup:
* @factory: a #GtkIconFactory
* @stock_id: an icon name
*
* 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.
*
* Return value: icon set of @stock_id.
**/
GtkIconSet *
gtk_icon_factory_lookup (GtkIconFactory *factory,
const gchar *stock_id)
{
g_return_val_if_fail (GTK_IS_ICON_FACTORY (factory), NULL);
g_return_val_if_fail (stock_id != NULL, NULL);
return g_hash_table_lookup (factory->icons, stock_id);
}
static GtkIconFactory *gtk_default_icons = NULL;
static GSList *default_factories = NULL;
/**
* gtk_icon_factory_add_default:
* @factory: a #GtkIconFactory
*
* 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.
*
**/
void
gtk_icon_factory_add_default (GtkIconFactory *factory)
{
g_return_if_fail (GTK_IS_ICON_FACTORY (factory));
g_object_ref (factory);
default_factories = g_slist_prepend (default_factories, factory);
}
/**
* gtk_icon_factory_remove_default:
* @factory: a #GtkIconFactory previously added with gtk_icon_factory_add_default()
*
* 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.
*
**/
void
gtk_icon_factory_remove_default (GtkIconFactory *factory)
{
g_return_if_fail (GTK_IS_ICON_FACTORY (factory));
default_factories = g_slist_remove (default_factories, factory);
g_object_unref (factory);
}
static void
ensure_default_icons (void)
{
if (gtk_default_icons == NULL)
{
gtk_default_icons = gtk_icon_factory_new ();
get_default_icons (gtk_default_icons);
}
}
/**
* gtk_icon_factory_lookup_default:
* @stock_id: an icon name
*
* 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.
*
*
* Return value: a #GtkIconSet, or %NULL
**/
GtkIconSet *
gtk_icon_factory_lookup_default (const gchar *stock_id)
{
GSList *tmp_list;
g_return_val_if_fail (stock_id != NULL, NULL);
tmp_list = default_factories;
while (tmp_list != NULL)
{
GtkIconSet *icon_set =
gtk_icon_factory_lookup (GTK_ICON_FACTORY (tmp_list->data),
stock_id);
if (icon_set)
return icon_set;
tmp_list = g_slist_next (tmp_list);
}
ensure_default_icons ();
return gtk_icon_factory_lookup (gtk_default_icons, stock_id);
}
static void
register_stock_icon (GtkIconFactory *factory,
const gchar *stock_id)
{
GtkIconSet *set = gtk_icon_set_new ();
GtkIconSource source = GTK_ICON_SOURCE_INIT (TRUE, TRUE, TRUE);
source.type = GTK_ICON_SOURCE_ICON_NAME;
source.source.icon_name = (gchar *)stock_id;
gtk_icon_set_add_source (set, &source);
gtk_icon_factory_add (factory, stock_id, set);
gtk_icon_set_unref (set);
}
static void
register_bidi_stock_icon (GtkIconFactory *factory,
const gchar *stock_id,
const gchar *stock_id_ltr,
const gchar *stock_id_rtl)
{
GtkIconSet *set = gtk_icon_set_new ();
GtkIconSource source = GTK_ICON_SOURCE_INIT (FALSE, TRUE, TRUE);
source.type = GTK_ICON_SOURCE_ICON_NAME;
source.source.icon_name = (gchar *)stock_id_ltr;
source.direction = GTK_TEXT_DIR_LTR;
gtk_icon_set_add_source (set, &source);
source.type = GTK_ICON_SOURCE_ICON_NAME;
source.source.icon_name = (gchar *)stock_id_rtl;
source.direction = GTK_TEXT_DIR_RTL;
gtk_icon_set_add_source (set, &source);
gtk_icon_factory_add (factory, stock_id, set);
gtk_icon_set_unref (set);
}
static void
add_default_image (const gchar *stock_id,
gint size,
const guchar *inline_data)
{
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_inline (-1, inline_data, FALSE, NULL);
g_assert (pixbuf);
gtk_icon_theme_add_builtin_icon (stock_id, size, pixbuf);
g_object_unref (pixbuf);
}
static void
add_icon (GtkIconFactory *factory,
const gchar *stock_id,
gint size,
const guchar *inline_data)
{
register_stock_icon (factory, stock_id);
add_default_image (stock_id, size, inline_data);
}
static void
add_icon2 (GtkIconFactory *factory,
const gchar *stock_id,
gint size1,
const guchar *inline_data1,
gint size2,
const guchar *inline_data2)
{
register_stock_icon (factory, stock_id);
add_default_image (stock_id, size1, inline_data1);
add_default_image (stock_id, size2, inline_data2);
}
static void
add_icon_bidi2 (GtkIconFactory *factory,
const gchar *stock_id,
gint size1,
const guchar *inline_data_ltr1,
const guchar *inline_data_rtl1,
gint size2,
const guchar *inline_data_ltr2,
const guchar *inline_data_rtl2)
{
gchar *stock_id_ltr = g_strconcat (stock_id, "-ltr", NULL);
gchar *stock_id_rtl = g_strconcat (stock_id, "-rtl", NULL);
register_bidi_stock_icon (factory, stock_id,
stock_id_ltr, stock_id_rtl);
add_default_image (stock_id_ltr, size1, inline_data_ltr1);
add_default_image (stock_id_ltr, size2, inline_data_ltr2);
add_default_image (stock_id_rtl, size1, inline_data_rtl1);
add_default_image (stock_id_rtl, size2, inline_data_rtl2);
g_free (stock_id_ltr);
g_free (stock_id_rtl);
}
static void
get_default_icons (GtkIconFactory *factory)
{
/* KEEP IN SYNC with gtkstock.c */
/* Have dialog size */
add_icon (factory, GTK_STOCK_DIALOG_ERROR, 48, stock_dialog_error_48);
add_icon (factory, GTK_STOCK_DIALOG_INFO, 48, stock_dialog_info_48);
add_icon (factory, GTK_STOCK_DIALOG_QUESTION, 48, stock_dialog_question_48);
add_icon (factory, GTK_STOCK_DIALOG_WARNING, 48, stock_dialog_warning_48);
/* Have dnd size */
add_icon (factory, GTK_STOCK_DND, 32, stock_dnd_32);
add_icon (factory, GTK_STOCK_DND_MULTIPLE, 32, stock_dnd_multiple_32);
/* Have button sizes */
add_icon (factory, GTK_STOCK_APPLY, 20, stock_apply_20);
add_icon (factory, GTK_STOCK_CANCEL, 20, stock_cancel_20);
add_icon (factory, GTK_STOCK_NO, 20, stock_no_20);
add_icon (factory, GTK_STOCK_OK, 20, stock_ok_20);
add_icon (factory, GTK_STOCK_YES, 20, stock_yes_20);
/* Generic + button sizes */
add_icon2 (factory, GTK_STOCK_CLOSE,
20, stock_close_20,
24, stock_close_24);
/* Generic + menu sizes */
add_icon2 (factory, GTK_STOCK_ADD,
16, stock_add_16,
24, stock_add_24);
add_icon2 (factory, GTK_STOCK_JUSTIFY_CENTER,
16, stock_align_center_16,
24, stock_align_center_24);
add_icon2 (factory, GTK_STOCK_JUSTIFY_FILL,
16, stock_align_justify_16,
24, stock_align_justify_24);
add_icon2 (factory, GTK_STOCK_JUSTIFY_LEFT,
16, stock_align_left_16,
24, stock_align_left_24);
add_icon2 (factory, GTK_STOCK_JUSTIFY_RIGHT,
16, stock_align_right_16,
24, stock_align_right_24);
add_icon2 (factory, GTK_STOCK_GOTO_BOTTOM,
16, stock_bottom_16,
24, stock_bottom_24);
add_icon2 (factory, GTK_STOCK_CDROM,
16, stock_cdrom_16,
24, stock_cdrom_24);
add_icon2 (factory, GTK_STOCK_CONVERT,
16, stock_convert_16,
24, stock_convert_24);
add_icon2 (factory, GTK_STOCK_COPY,
16, stock_copy_16,
24, stock_copy_24);
add_icon2 (factory, GTK_STOCK_CUT,
16, stock_cut_16,
24, stock_cut_24);
add_icon2 (factory, GTK_STOCK_GO_DOWN,
16, stock_down_arrow_16,
24, stock_down_arrow_24);
add_icon2 (factory, GTK_STOCK_EXECUTE,
16, stock_exec_16,
24, stock_exec_24);
add_icon2 (factory, GTK_STOCK_QUIT,
16, stock_exit_16,
24, stock_exit_24);
add_icon_bidi2 (factory, GTK_STOCK_GOTO_FIRST,
16, stock_first_16, stock_last_16,
24, stock_first_24, stock_last_24);
add_icon2 (factory, GTK_STOCK_SELECT_FONT,
16, stock_font_16,
24, stock_font_24);
add_icon2 (factory, GTK_STOCK_HELP,
16, stock_help_16,
24, stock_help_24);
add_icon2 (factory, GTK_STOCK_HOME,
16, stock_home_16,
24, stock_home_24);
add_icon_bidi2 (factory, GTK_STOCK_JUMP_TO,
16, stock_jump_to_16, stock_jump_to_rtl_16,
24, stock_jump_to_24, stock_jump_to_rtl_24);
add_icon_bidi2 (factory, GTK_STOCK_GOTO_LAST,
16, stock_last_16, stock_first_16,
24, stock_last_24, stock_first_24);
add_icon_bidi2 (factory, GTK_STOCK_GO_BACK,
16, stock_left_arrow_16, stock_right_arrow_16,
24, stock_left_arrow_24, stock_right_arrow_24);
add_icon2 (factory, GTK_STOCK_MISSING_IMAGE,
16, stock_missing_image_16,
24, stock_missing_image_24);
add_icon2 (factory, GTK_STOCK_NEW,
16, stock_new_16,
24, stock_new_24);
add_icon2 (factory, GTK_STOCK_OPEN,
16, stock_open_16,
24, stock_open_24);
add_icon2 (factory, GTK_STOCK_PASTE,
16, stock_paste_16,
24, stock_paste_24);
add_icon2 (factory, GTK_STOCK_PREFERENCES,
16, stock_preferences_16,
24, stock_preferences_24);
add_icon2 (factory, GTK_STOCK_PRINT,
16, stock_print_16,
24, stock_print_24);
add_icon2 (factory, GTK_STOCK_PRINT_PREVIEW,
16, stock_print_preview_16,
24, stock_print_preview_24);
add_icon2 (factory, GTK_STOCK_PROPERTIES,
16, stock_properties_16,
24, stock_properties_24);
add_icon_bidi2 (factory, GTK_STOCK_REDO,
16, stock_redo_16, stock_redo_rtl_16,
24, stock_redo_24, stock_redo_rtl_24);
add_icon2 (factory, GTK_STOCK_REMOVE,
16, stock_remove_16,
24, stock_remove_24);
add_icon2 (factory, GTK_STOCK_REFRESH,
16, stock_refresh_16,
24, stock_refresh_24);
add_icon_bidi2 (factory, GTK_STOCK_REVERT_TO_SAVED,
16, stock_revert_16, stock_revert_rtl_16,
24, stock_revert_24, stock_revert_rtl_24);
add_icon_bidi2 (factory, GTK_STOCK_GO_FORWARD,
16, stock_right_arrow_16, stock_left_arrow_16,
24, stock_right_arrow_24, stock_left_arrow_24);
add_icon2 (factory, GTK_STOCK_SAVE,
16, stock_save_16,
24, stock_save_24);
add_icon2 (factory, GTK_STOCK_FLOPPY,
16, stock_save_16,
24, stock_save_24);
add_icon2 (factory, GTK_STOCK_SAVE_AS,
16, stock_save_as_16,
24, stock_save_as_24);
add_icon2 (factory, GTK_STOCK_FIND,
16, stock_search_16,
24, stock_search_24);
add_icon2 (factory, GTK_STOCK_FIND_AND_REPLACE,
16, stock_search_replace_16,
24, stock_search_replace_24);
add_icon2 (factory, GTK_STOCK_SORT_DESCENDING,
16, stock_sort_descending_16,
24, stock_sort_descending_24);
add_icon2 (factory, GTK_STOCK_SORT_ASCENDING,
16, stock_sort_ascending_16,
24, stock_sort_ascending_24);
add_icon2 (factory, GTK_STOCK_SPELL_CHECK,
16, stock_spellcheck_16,
24, stock_spellcheck_24);
add_icon2 (factory, GTK_STOCK_STOP,
16, stock_stop_16,
24, stock_stop_24);
add_icon2 (factory, GTK_STOCK_BOLD,
16, stock_text_bold_16,
24, stock_text_bold_24);
add_icon2 (factory, GTK_STOCK_ITALIC,
16, stock_text_italic_16,
24, stock_text_italic_24);
add_icon2 (factory, GTK_STOCK_STRIKETHROUGH,
16, stock_text_strikethrough_16,
24, stock_text_strikethrough_24);
add_icon2 (factory, GTK_STOCK_UNDERLINE,
16, stock_text_underline_16,
24, stock_text_underline_24);
add_icon2 (factory, GTK_STOCK_GOTO_TOP,
16, stock_top_16,
24, stock_top_24);
add_icon2 (factory, GTK_STOCK_DELETE,
16, stock_trash_16,
24, stock_trash_24);
add_icon_bidi2 (factory, GTK_STOCK_UNDELETE,
16, stock_undelete_16, stock_undelete_rtl_16,
24, stock_undelete_24, stock_undelete_rtl_24);
add_icon_bidi2 (factory, GTK_STOCK_UNDO,
16, stock_undo_16, stock_undo_rtl_16,
24, stock_undo_24, stock_undo_rtl_24);
add_icon2 (factory, GTK_STOCK_GO_UP,
16, stock_up_arrow_16,
24, stock_up_arrow_24);
/* Generic size only */
add_icon (factory, GTK_STOCK_CLEAR, 24, stock_clear_24);
add_icon (factory, GTK_STOCK_SELECT_COLOR, 24, stock_colorselector_24);
add_icon (factory, GTK_STOCK_COLOR_PICKER, 25, stock_color_picker_25);
add_icon (factory, GTK_STOCK_INDEX, 24, stock_index_24);
add_icon (factory, GTK_STOCK_ZOOM_100, 24, stock_zoom_1_24);
add_icon (factory, GTK_STOCK_ZOOM_FIT, 24, stock_zoom_fit_24);
add_icon (factory, GTK_STOCK_ZOOM_IN, 24, stock_zoom_in_24);
add_icon (factory, GTK_STOCK_ZOOM_OUT, 24, stock_zoom_out_24);
}
/************************************************************
* Icon size handling *
************************************************************/
typedef struct _IconSize IconSize;
struct _IconSize
{
gint size;
gchar *name;
gint width;
gint height;
};
typedef struct _IconAlias IconAlias;
struct _IconAlias
{
gchar *name;
gint target;
};
typedef struct _SettingsIconSize SettingsIconSize;
struct _SettingsIconSize
{
gint width;
gint height;
};
static GHashTable *icon_aliases = NULL;
static IconSize *icon_sizes = NULL;
static gint icon_sizes_allocated = 0;
static gint icon_sizes_used = 0;
static void
init_icon_sizes (void)
{
if (icon_sizes == NULL)
{
#define NUM_BUILTIN_SIZES 7
gint i;
icon_aliases = g_hash_table_new (g_str_hash, g_str_equal);
icon_sizes = g_new (IconSize, NUM_BUILTIN_SIZES);
icon_sizes_allocated = NUM_BUILTIN_SIZES;
icon_sizes_used = NUM_BUILTIN_SIZES;
icon_sizes[GTK_ICON_SIZE_INVALID].size = 0;
icon_sizes[GTK_ICON_SIZE_INVALID].name = NULL;
icon_sizes[GTK_ICON_SIZE_INVALID].width = 0;
icon_sizes[GTK_ICON_SIZE_INVALID].height = 0;
/* the name strings aren't copied since we don't ever remove
* icon sizes, so we don't need to know whether they're static.
* Even if we did I suppose removing the builtin sizes would be
* disallowed.
*/
icon_sizes[GTK_ICON_SIZE_MENU].size = GTK_ICON_SIZE_MENU;
icon_sizes[GTK_ICON_SIZE_MENU].name = "gtk-menu";
icon_sizes[GTK_ICON_SIZE_MENU].width = 16;
icon_sizes[GTK_ICON_SIZE_MENU].height = 16;
icon_sizes[GTK_ICON_SIZE_BUTTON].size = GTK_ICON_SIZE_BUTTON;
icon_sizes[GTK_ICON_SIZE_BUTTON].name = "gtk-button";
icon_sizes[GTK_ICON_SIZE_BUTTON].width = 20;
icon_sizes[GTK_ICON_SIZE_BUTTON].height = 20;
icon_sizes[GTK_ICON_SIZE_SMALL_TOOLBAR].size = GTK_ICON_SIZE_SMALL_TOOLBAR;
icon_sizes[GTK_ICON_SIZE_SMALL_TOOLBAR].name = "gtk-small-toolbar";
icon_sizes[GTK_ICON_SIZE_SMALL_TOOLBAR].width = 18;
icon_sizes[GTK_ICON_SIZE_SMALL_TOOLBAR].height = 18;
icon_sizes[GTK_ICON_SIZE_LARGE_TOOLBAR].size = GTK_ICON_SIZE_LARGE_TOOLBAR;
icon_sizes[GTK_ICON_SIZE_LARGE_TOOLBAR].name = "gtk-large-toolbar";
icon_sizes[GTK_ICON_SIZE_LARGE_TOOLBAR].width = 24;
icon_sizes[GTK_ICON_SIZE_LARGE_TOOLBAR].height = 24;
icon_sizes[GTK_ICON_SIZE_DND].size = GTK_ICON_SIZE_DND;
icon_sizes[GTK_ICON_SIZE_DND].name = "gtk-dnd";
icon_sizes[GTK_ICON_SIZE_DND].width = 32;
icon_sizes[GTK_ICON_SIZE_DND].height = 32;
icon_sizes[GTK_ICON_SIZE_DIALOG].size = GTK_ICON_SIZE_DIALOG;
icon_sizes[GTK_ICON_SIZE_DIALOG].name = "gtk-dialog";
icon_sizes[GTK_ICON_SIZE_DIALOG].width = 48;
icon_sizes[GTK_ICON_SIZE_DIALOG].height = 48;
g_assert ((GTK_ICON_SIZE_DIALOG + 1) == NUM_BUILTIN_SIZES);
/* Alias everything to itself. */
i = 1; /* skip invalid size */
while (i < NUM_BUILTIN_SIZES)
{
gtk_icon_size_register_alias (icon_sizes[i].name, icon_sizes[i].size);
++i;
}
#undef NUM_BUILTIN_SIZES
}
}
static void
free_settings_sizes (gpointer data)
{
g_array_free (data, TRUE);
}
static GArray *
get_settings_sizes (GtkSettings *settings,
gboolean *created)
{
GArray *settings_sizes;
static GQuark sizes_quark = 0;
if (!sizes_quark)
sizes_quark = g_quark_from_static_string ("gtk-icon-sizes");
settings_sizes = g_object_get_qdata (G_OBJECT (settings), sizes_quark);
if (!settings_sizes)
{
settings_sizes = g_array_new (FALSE, FALSE, sizeof (SettingsIconSize));
g_object_set_qdata_full (G_OBJECT (settings), sizes_quark,
settings_sizes, free_settings_sizes);
if (created)
*created = TRUE;
}
return settings_sizes;
}
static void
icon_size_set_for_settings (GtkSettings *settings,
const gchar *size_name,
gint width,
gint height)
{
GtkIconSize size;
GArray *settings_sizes;
SettingsIconSize *settings_size;
g_return_if_fail (size_name != NULL);
size = gtk_icon_size_from_name (size_name);
if (size == GTK_ICON_SIZE_INVALID)
/* Reserve a place */
size = icon_size_register_intern (size_name, -1, -1);
settings_sizes = get_settings_sizes (settings, NULL);
if (size >= settings_sizes->len)
{
SettingsIconSize unset = { -1, -1 };
gint i;
for (i = settings_sizes->len; i <= size; i++)
g_array_append_val (settings_sizes, unset);
}
settings_size = &g_array_index (settings_sizes, SettingsIconSize, size);
settings_size->width = width;
settings_size->height = height;
}
/* Like pango_parse_word, but accept - as well
*/
static gboolean
scan_icon_size_name (const char **pos, GString *out)
{
const char *p = *pos;
while (g_ascii_isspace (*p))
p++;
if (!((*p >= 'A' && *p <= 'Z') ||
(*p >= 'a' && *p <= 'z') ||
*p == '_' || *p == '-'))
return FALSE;
g_string_truncate (out, 0);
g_string_append_c (out, *p);
p++;
while ((*p >= 'A' && *p <= 'Z') ||
(*p >= 'a' && *p <= 'z') ||
(*p >= '0' && *p <= '9') ||
*p == '_' || *p == '-')
{
g_string_append_c (out, *p);
p++;
}
*pos = p;
return TRUE;
}
static void
icon_size_setting_parse (GtkSettings *settings,
const gchar *icon_size_string)
{
GString *name_buf = g_string_new (NULL);
const gchar *p = icon_size_string;
while (pango_skip_space (&p))
{
gint width, height;
if (!scan_icon_size_name (&p, name_buf))
goto err;
if (!pango_skip_space (&p))
goto err;
if (*p != '=')
goto err;
p++;
if (!pango_scan_int (&p, &width))
goto err;
if (!pango_skip_space (&p))
goto err;
if (*p != ',')
goto err;
p++;
if (!pango_scan_int (&p, &height))
goto err;
if (width > 0 && height > 0)
{
icon_size_set_for_settings (settings, name_buf->str,
width, height);
}
else
{
g_warning ("Invalid size in gtk-icon-sizes: %d,%d\n", width, height);
}
pango_skip_space (&p);
if (*p == '\0')
break;
if (*p == ':')
p++;
else
goto err;
}
g_string_free (name_buf, TRUE);
return;
err:
g_warning ("Error parsing gtk-icon-sizes string:\n\t'%s'", icon_size_string);
g_string_free (name_buf, TRUE);
}
static void
icon_size_set_all_from_settings (GtkSettings *settings)
{
GArray *settings_sizes;
gchar *icon_size_string;
/* Reset old settings */
settings_sizes = get_settings_sizes (settings, NULL);
g_array_set_size (settings_sizes, 0);
g_object_get (settings,
"gtk-icon-sizes", &icon_size_string,
NULL);
if (icon_size_string)
{
icon_size_setting_parse (settings, icon_size_string);
g_free (icon_size_string);
}
}
static void
icon_size_settings_changed (GtkSettings *settings,
GParamSpec *pspec)
{
icon_size_set_all_from_settings (settings);
_gtk_rc_reset_styles (settings);
}
static void
icon_sizes_init_for_settings (GtkSettings *settings)
{
g_signal_connect (settings,
"notify::gtk-icon-sizes",
G_CALLBACK (icon_size_settings_changed),
NULL);
icon_size_set_all_from_settings (settings);
}
gboolean
icon_size_lookup_intern (GtkSettings *settings,
GtkIconSize size,
gint *widthp,
gint *heightp)
{
GArray *settings_sizes;
gint width_for_settings = -1;
gint height_for_settings = -1;
init_icon_sizes ();
if (size >= icon_sizes_used)
return FALSE;
if (size == GTK_ICON_SIZE_INVALID)
return FALSE;
if (settings)
{
gboolean initial = FALSE;
settings_sizes = get_settings_sizes (settings, &initial);
if (initial)
icon_sizes_init_for_settings (settings);
if (size < settings_sizes->len)
{
SettingsIconSize *settings_size;
settings_size = &g_array_index (settings_sizes, SettingsIconSize, size);
width_for_settings = settings_size->width;
height_for_settings = settings_size->height;
}
}
if (widthp)
*widthp = width_for_settings >= 0 ? width_for_settings : icon_sizes[size].width;
if (heightp)
*heightp = height_for_settings >= 0 ? height_for_settings : icon_sizes[size].height;
return TRUE;
}
/**
* gtk_icon_size_lookup_for_settings:
* @settings: a #GtkSettings object, used to determine
* which set of user preferences to used.
* @size: an icon size
* @width: location to store icon width
* @height: location to store icon 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.
*
* Return value: %TRUE if @size was a valid size
*
* Since: 2.2
**/
gboolean
gtk_icon_size_lookup_for_settings (GtkSettings *settings,
GtkIconSize size,
gint *width,
gint *height)
{
g_return_val_if_fail (GTK_IS_SETTINGS (settings), FALSE);
return icon_size_lookup_intern (settings, size, width, height);
}
/**
* gtk_icon_size_lookup:
* @size: an icon size
* @width: location to store icon width
* @height: location to store icon 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.
*
* Return value: %TRUE if @size was a valid size
**/
gboolean
gtk_icon_size_lookup (GtkIconSize size,
gint *widthp,
gint *heightp)
{
GTK_NOTE (MULTIHEAD,
g_warning ("gtk_icon_size_lookup ()) is not multihead safe"));
return gtk_icon_size_lookup_for_settings (gtk_settings_get_default (),
size, widthp, heightp);
}
static GtkIconSize
icon_size_register_intern (const gchar *name,
gint width,
gint height)
{
IconAlias *old_alias;
GtkIconSize size;
init_icon_sizes ();
old_alias = g_hash_table_lookup (icon_aliases, name);
if (old_alias && icon_sizes[old_alias->target].width > 0)
{
g_warning ("Icon size name '%s' already exists", name);
return GTK_ICON_SIZE_INVALID;
}
if (old_alias)
{
size = old_alias->target;
}
else
{
if (icon_sizes_used == icon_sizes_allocated)
{
icon_sizes_allocated *= 2;
icon_sizes = g_renew (IconSize, icon_sizes, icon_sizes_allocated);
}
size = icon_sizes_used++;
/* alias to self. */
gtk_icon_size_register_alias (name, size);
icon_sizes[size].size = size;
icon_sizes[size].name = g_strdup (name);
}
icon_sizes[size].width = width;
icon_sizes[size].height = height;
return size;
}
/**
* gtk_icon_size_register:
* @name: name of the icon size
* @width: the icon width
* @height: the icon height
*
* Registers a new icon size, along the same lines as #GTK_ICON_SIZE_MENU,
* etc. Returns the integer value for the size.
*
* Returns: integer value representing the size
*
**/
GtkIconSize
gtk_icon_size_register (const gchar *name,
gint width,
gint height)
{
g_return_val_if_fail (name != NULL, 0);
g_return_val_if_fail (width > 0, 0);
g_return_val_if_fail (height > 0, 0);
return icon_size_register_intern (name, width, height);
}
/**
* gtk_icon_size_register_alias:
* @alias: an alias for @target
* @target: an existing icon size
*
* Registers @alias as another name for @target.
* So calling gtk_icon_size_from_name() with @alias as argument
* will return @target.
*
**/
void
gtk_icon_size_register_alias (const gchar *alias,
GtkIconSize target)
{
IconAlias *ia;
g_return_if_fail (alias != NULL);
init_icon_sizes ();
if (!icon_size_lookup_intern (NULL, target, NULL, NULL))
g_warning ("gtk_icon_size_register_alias: Icon size %d does not exist", target);
ia = g_hash_table_lookup (icon_aliases, alias);
if (ia)
{
if (icon_sizes[ia->target].width > 0)
{
g_warning ("gtk_icon_size_register_alias: Icon size name '%s' already exists", alias);
return;
}
ia->target = target;
}
if (!ia)
{
ia = g_new (IconAlias, 1);
ia->name = g_strdup (alias);
ia->target = target;
g_hash_table_insert (icon_aliases, ia->name, ia);
}
}
/**
* gtk_icon_size_from_name:
* @name: the name to look up.
* @returns: the icon size with the given name.
*
* Looks up the icon size associated with @name.
**/
GtkIconSize
gtk_icon_size_from_name (const gchar *name)
{
IconAlias *ia;
init_icon_sizes ();
ia = g_hash_table_lookup (icon_aliases, name);
if (ia && icon_sizes[ia->target].width > 0)
return ia->target;
else
return GTK_ICON_SIZE_INVALID;
}
/**
* gtk_icon_size_get_name:
* @size: a #GtkIconSize.
* @returns: the name of the given icon size.
*
* Gets the canonical name of the given icon size. The returned string
* is statically allocated and should not be freed.
**/
G_CONST_RETURN gchar*
gtk_icon_size_get_name (GtkIconSize size)
{
if (size >= icon_sizes_used)
return NULL;
else
return icon_sizes[size].name;
}
/************************************************************/
/* Icon Set */
static GdkPixbuf *find_in_cache (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size);
static void add_to_cache (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GdkPixbuf *pixbuf);
/* Clear icon set contents, drop references to all contained
* GdkPixbuf objects and forget all GtkIconSources. Used to
* recycle an icon set.
*/
static void clear_cache (GtkIconSet *icon_set,
gboolean style_detach);
static GSList* copy_cache (GtkIconSet *icon_set,
GtkIconSet *copy_recipient);
static void attach_to_style (GtkIconSet *icon_set,
GtkStyle *style);
static void detach_from_style (GtkIconSet *icon_set,
GtkStyle *style);
static void style_dnotify (gpointer data);
struct _GtkIconSet
{
guint ref_count;
GSList *sources;
/* Cache of the last few rendered versions of the icon. */
GSList *cache;
guint cache_size;
guint cache_serial;
};
static guint cache_serial = 0;
/**
* gtk_icon_set_new:
*
* 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.
*
* Return value: a new #GtkIconSet
**/
GtkIconSet*
gtk_icon_set_new (void)
{
GtkIconSet *icon_set;
icon_set = g_new (GtkIconSet, 1);
icon_set->ref_count = 1;
icon_set->sources = NULL;
icon_set->cache = NULL;
icon_set->cache_size = 0;
icon_set->cache_serial = cache_serial;
return icon_set;
}
/**
* gtk_icon_set_new_from_pixbuf:
* @pixbuf: a #GdkPixbuf
*
* 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.
*
* Return value: a new #GtkIconSet
**/
GtkIconSet *
gtk_icon_set_new_from_pixbuf (GdkPixbuf *pixbuf)
{
GtkIconSet *set;
GtkIconSource source = GTK_ICON_SOURCE_INIT (TRUE, TRUE, TRUE);
g_return_val_if_fail (pixbuf != NULL, NULL);
set = gtk_icon_set_new ();
gtk_icon_source_set_pixbuf (&source, pixbuf);
gtk_icon_set_add_source (set, &source);
gtk_icon_source_set_pixbuf (&source, NULL);
return set;
}
/**
* gtk_icon_set_ref:
* @icon_set: a #GtkIconSet.
*
* Increments the reference count on @icon_set.
*
* Return value: @icon_set.
**/
GtkIconSet*
gtk_icon_set_ref (GtkIconSet *icon_set)
{
g_return_val_if_fail (icon_set != NULL, NULL);
g_return_val_if_fail (icon_set->ref_count > 0, NULL);
icon_set->ref_count += 1;
return icon_set;
}
/**
* gtk_icon_set_unref:
* @icon_set: a #GtkIconSet
*
* Decrements the reference count on @icon_set, and frees memory
* if the reference count reaches 0.
**/
void
gtk_icon_set_unref (GtkIconSet *icon_set)
{
g_return_if_fail (icon_set != NULL);
g_return_if_fail (icon_set->ref_count > 0);
icon_set->ref_count -= 1;
if (icon_set->ref_count == 0)
{
GSList *tmp_list = icon_set->sources;
while (tmp_list != NULL)
{
gtk_icon_source_free (tmp_list->data);
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (icon_set->sources);
clear_cache (icon_set, TRUE);
g_free (icon_set);
}
}
GType
gtk_icon_set_get_type (void)
{
static GType our_type = 0;
if (our_type == 0)
our_type = g_boxed_type_register_static ("GtkIconSet",
(GBoxedCopyFunc) gtk_icon_set_ref,
(GBoxedFreeFunc) gtk_icon_set_unref);
return our_type;
}
/**
* gtk_icon_set_copy:
* @icon_set: a #GtkIconSet
*
* Copies @icon_set by value.
*
* Return value: a new #GtkIconSet identical to the first.
**/
GtkIconSet*
gtk_icon_set_copy (GtkIconSet *icon_set)
{
GtkIconSet *copy;
GSList *tmp_list;
copy = gtk_icon_set_new ();
tmp_list = icon_set->sources;
while (tmp_list != NULL)
{
copy->sources = g_slist_prepend (copy->sources,
gtk_icon_source_copy (tmp_list->data));
tmp_list = g_slist_next (tmp_list);
}
copy->sources = g_slist_reverse (copy->sources);
copy->cache = copy_cache (icon_set, copy);
copy->cache_size = icon_set->cache_size;
copy->cache_serial = icon_set->cache_serial;
return copy;
}
static gboolean
sizes_equivalent (GtkIconSize lhs,
GtkIconSize rhs)
{
/* We used to consider sizes equivalent if they were
* the same pixel size, but we don't have the GtkSettings
* here, so we can't do that. Plus, it's not clear that
* it is right... it was just a workaround for the fact
* that we register icons by logical size, not pixel size.
*/
#if 1
return lhs == rhs;
#else
gint r_w, r_h, l_w, l_h;
icon_size_lookup_intern (NULL, rhs, &r_w, &r_h);
icon_size_lookup_intern (NULL, lhs, &l_w, &l_h);
return r_w == l_w && r_h == l_h;
#endif
}
static GtkIconSource *
find_best_matching_source (GtkIconSet *icon_set,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GSList *failed)
{
GtkIconSource *source;
GSList *tmp_list;
/* We need to find the best icon source. Direction matters more
* than state, state matters more than size. icon_set->sources
* is sorted according to wildness, so if we take the first
* match we find it will be the least-wild match (if there are
* multiple matches for a given "wildness" then the RC file contained
* dumb stuff, and we end up with an arbitrary matching source)
*/
source = NULL;
tmp_list = icon_set->sources;
while (tmp_list != NULL)
{
GtkIconSource *s = tmp_list->data;
if ((s->any_direction || (s->direction == direction)) &&
(s->any_state || (s->state == state)) &&
(s->any_size || (sizes_equivalent (size, s->size))))
{
if (!g_slist_find (failed, s))
{
source = s;
break;
}
}
tmp_list = g_slist_next (tmp_list);
}
return source;
}
static gboolean
ensure_filename_pixbuf (GtkIconSet *icon_set,
GtkIconSource *source)
{
if (source->filename_pixbuf == NULL)
{
GError *error = NULL;
source->filename_pixbuf = gdk_pixbuf_new_from_file (source->source.filename, &error);
if (source->filename_pixbuf == NULL)
{
/* Remove this icon source so we don't keep trying to
* load it.
*/
g_warning (_("Error loading icon: %s"), error->message);
g_error_free (error);
icon_set->sources = g_slist_remove (icon_set->sources, source);
gtk_icon_source_free (source);
return FALSE;
}
}
return TRUE;
}
static GdkPixbuf *
render_icon_name_pixbuf (GtkIconSource *icon_source,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const char *detail)
{
GdkPixbuf *pixbuf;
GdkPixbuf *tmp_pixbuf;
GtkIconSource tmp_source;
GdkScreen *screen;
GtkIconTheme *icon_theme;
GtkSettings *settings;
gint width, height, pixel_size;
GError *error = NULL;
if (widget && gtk_widget_has_screen (widget))
screen = gtk_widget_get_screen (widget);
else if (style->colormap)
screen = gdk_colormap_get_screen (style->colormap);
else
{
screen = gdk_screen_get_default ();
GTK_NOTE (MULTIHEAD,
g_warning ("Using the default screen for gtk_icon_source_render_icon()"));
}
icon_theme = gtk_icon_theme_get_for_screen (screen);
settings = gtk_settings_get_for_screen (screen);
if (!gtk_icon_size_lookup_for_settings (settings, size, &width, &height))
{
g_warning ("Invalid icon size %d\n", size);
width = height = 24;
}
pixel_size = MIN (width, height);
tmp_pixbuf = gtk_icon_theme_load_icon (icon_theme,
icon_source->source.icon_name,
pixel_size, 0,
&error);
if (!tmp_pixbuf)
{
g_warning ("Error loading theme icon for stock: %s", error->message);
return NULL;
}
tmp_source = *icon_source;
tmp_source.type = GTK_ICON_SOURCE_PIXBUF;
tmp_source.source.pixbuf = tmp_pixbuf;
pixbuf = gtk_style_render_icon (style, &tmp_source,
direction, state, -1,
widget, detail);
if (!pixbuf)
g_warning ("Failed to render icon");
g_object_unref (tmp_pixbuf);
return pixbuf;
}
static GdkPixbuf *
find_and_render_icon_source (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const char *detail)
{
GSList *failed = NULL;
GdkPixbuf *pixbuf = NULL;
/* We treat failure in two different ways:
*
* A) If loading a source that specifies a filename fails,
* we treat that as permanent, and remove the source
* from the GtkIconSet. (in ensure_filename_pixbuf ()
* B) If loading a themed icon fails, or scaling an icon
* fails, we treat that as transient and will try
* again next time the icon falls out of the cache
* and we need to recreate it.
*/
while (pixbuf == NULL)
{
GtkIconSource *source = find_best_matching_source (icon_set, direction, state, size, failed);
if (source == NULL)
break;
switch (source->type)
{
case GTK_ICON_SOURCE_FILENAME:
if (!ensure_filename_pixbuf (icon_set, source))
break;
/* Fall through */
case GTK_ICON_SOURCE_PIXBUF:
pixbuf = gtk_style_render_icon (style, source,
direction, state, size,
widget, detail);
if (!pixbuf)
{
g_warning ("Failed to render icon");
failed = g_slist_prepend (failed, source);
}
break;
case GTK_ICON_SOURCE_ICON_NAME:
pixbuf = render_icon_name_pixbuf (source, style,
direction, state, size,
widget, detail);
if (!pixbuf)
failed = g_slist_prepend (failed, source);
break;
case GTK_ICON_SOURCE_EMPTY:
g_assert_not_reached ();
}
}
g_slist_free (failed);
return pixbuf;
}
static GdkPixbuf*
render_fallback_image (GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const char *detail)
{
/* This icon can be used for any direction/state/size */
static GtkIconSource fallback_source = GTK_ICON_SOURCE_INIT (TRUE, TRUE, TRUE);
if (fallback_source.type == GTK_ICON_SOURCE_EMPTY)
{
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_inline (-1, stock_missing_image_24, FALSE, NULL);
gtk_icon_source_set_pixbuf (&fallback_source, pixbuf);
g_object_unref (pixbuf);
}
return gtk_style_render_icon (style,
&fallback_source,
direction,
state,
size,
widget,
detail);
}
/**
* gtk_icon_set_render_icon:
* @icon_set: a #GtkIconSet
* @style: a #GtkStyle associated with @widget, or %NULL
* @direction: text direction
* @state: widget state
* @size: icon size
* @widget: widget that will display the icon, or %NULL.
* The only use that is typically made of this
* is to determine the appropriate #GdkScreen.
* @detail: detail to pass to the theme engine, or %NULL.
* Note that passing a detail of anything but %NULL
* will disable caching.
*
* 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.
*
* Return value: a #GdkPixbuf to be displayed
**/
GdkPixbuf*
gtk_icon_set_render_icon (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const char *detail)
{
GdkPixbuf *icon;
g_return_val_if_fail (icon_set != NULL, NULL);
g_return_val_if_fail (GTK_IS_STYLE (style), NULL);
if (icon_set->sources == NULL)
return render_fallback_image (style, direction, state, size, widget, detail);
if (detail == NULL)
{
icon = find_in_cache (icon_set, style, direction,
state, size);
if (icon)
{
g_object_ref (icon);
return icon;
}
}
icon = find_and_render_icon_source (icon_set, style, direction, state, size,
widget, detail);
if (icon == NULL)
icon = render_fallback_image (style, direction, state, size, widget, detail);
if (detail == NULL)
add_to_cache (icon_set, style, direction, state, size, icon);
return icon;
}
/* Order sources by their "wildness", so that "wilder" sources are
* greater than "specific" sources; for determining ordering,
* direction beats state beats size.
*/
static int
icon_source_compare (gconstpointer ap, gconstpointer bp)
{
const GtkIconSource *a = ap;
const GtkIconSource *b = bp;
if (!a->any_direction && b->any_direction)
return -1;
else if (a->any_direction && !b->any_direction)
return 1;
else if (!a->any_state && b->any_state)
return -1;
else if (a->any_state && !b->any_state)
return 1;
else if (!a->any_size && b->any_size)
return -1;
else if (a->any_size && !b->any_size)
return 1;
else
return 0;
}
/**
* gtk_icon_set_add_source:
* @icon_set: a #GtkIconSet
* @source: a #GtkIconSource
*
* 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.
*
**/
void
gtk_icon_set_add_source (GtkIconSet *icon_set,
const GtkIconSource *source)
{
g_return_if_fail (icon_set != NULL);
g_return_if_fail (source != NULL);
if (source->type == GTK_ICON_SOURCE_EMPTY)
{
g_warning ("Useless empty GtkIconSource");
return;
}
icon_set->sources = g_slist_insert_sorted (icon_set->sources,
gtk_icon_source_copy (source),
icon_source_compare);
}
/**
* gtk_icon_set_get_sizes:
* @icon_set: a #GtkIconSet
* @sizes: return location for array of sizes
* @n_sizes: location to store number of elements in returned array
*
* Obtains a list of icon sizes this icon set can render. The returned
* array must be freed with g_free().
*
**/
void
gtk_icon_set_get_sizes (GtkIconSet *icon_set,
GtkIconSize **sizes,
gint *n_sizes)
{
GSList *tmp_list;
gboolean all_sizes = FALSE;
GSList *specifics = NULL;
g_return_if_fail (icon_set != NULL);
g_return_if_fail (sizes != NULL);
g_return_if_fail (n_sizes != NULL);
tmp_list = icon_set->sources;
while (tmp_list != NULL)
{
GtkIconSource *source;
source = tmp_list->data;
if (source->any_size)
{
all_sizes = TRUE;
break;
}
else
specifics = g_slist_prepend (specifics, GINT_TO_POINTER (source->size));
tmp_list = g_slist_next (tmp_list);
}
if (all_sizes)
{
/* Need to find out what sizes exist */
gint i;
init_icon_sizes ();
*sizes = g_new (GtkIconSize, icon_sizes_used);
*n_sizes = icon_sizes_used - 1;
i = 1;
while (i < icon_sizes_used)
{
(*sizes)[i - 1] = icon_sizes[i].size;
++i;
}
}
else
{
gint i;
*n_sizes = g_slist_length (specifics);
*sizes = g_new (GtkIconSize, *n_sizes);
i = 0;
tmp_list = specifics;
while (tmp_list != NULL)
{
(*sizes)[i] = GPOINTER_TO_INT (tmp_list->data);
++i;
tmp_list = g_slist_next (tmp_list);
}
}
g_slist_free (specifics);
}
/**
* gtk_icon_source_new:
*
* 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.
*
* Return value: a new #GtkIconSource
**/
GtkIconSource*
gtk_icon_source_new (void)
{
GtkIconSource *src;
src = g_new0 (GtkIconSource, 1);
src->direction = GTK_TEXT_DIR_NONE;
src->size = GTK_ICON_SIZE_INVALID;
src->state = GTK_STATE_NORMAL;
src->any_direction = TRUE;
src->any_state = TRUE;
src->any_size = TRUE;
return src;
}
/**
* gtk_icon_source_copy:
* @source: a #GtkIconSource
*
* Creates a copy of @source; mostly useful for language bindings.
*
* Return value: a new #GtkIconSource
**/
GtkIconSource*
gtk_icon_source_copy (const GtkIconSource *source)
{
GtkIconSource *copy;
g_return_val_if_fail (source != NULL, NULL);
copy = g_new (GtkIconSource, 1);
*copy = *source;
switch (copy->type)
{
case GTK_ICON_SOURCE_EMPTY:
break;
case GTK_ICON_SOURCE_ICON_NAME:
copy->source.icon_name = g_strdup (copy->source.icon_name);
break;
case GTK_ICON_SOURCE_FILENAME:
copy->source.filename = g_strdup (copy->source.filename);
if (copy->filename_pixbuf)
g_object_ref (copy->filename_pixbuf);
break;
case GTK_ICON_SOURCE_PIXBUF:
g_object_ref (copy->source.pixbuf);
break;
default:
g_assert_not_reached();
}
return copy;
}
/**
* gtk_icon_source_free:
* @source: a #GtkIconSource
*
* Frees a dynamically-allocated icon source, along with its
* filename, size, and pixbuf fields if those are not %NULL.
**/
void
gtk_icon_source_free (GtkIconSource *source)
{
g_return_if_fail (source != NULL);
icon_source_clear (source);
g_free (source);
}
GType
gtk_icon_source_get_type (void)
{
static GType our_type = 0;
if (our_type == 0)
our_type = g_boxed_type_register_static ("GtkIconSource",
(GBoxedCopyFunc) gtk_icon_source_copy,
(GBoxedFreeFunc) gtk_icon_source_free);
return our_type;
}
static void
icon_source_clear (GtkIconSource *source)
{
switch (source->type)
{
case GTK_ICON_SOURCE_EMPTY:
break;
case GTK_ICON_SOURCE_ICON_NAME:
g_free (source->source.icon_name);
source->source.icon_name = NULL;
break;
case GTK_ICON_SOURCE_FILENAME:
g_free (source->source.filename);
source->source.filename = NULL;
g_free (source->filename_pixbuf);
source->filename_pixbuf = NULL;
break;
case GTK_ICON_SOURCE_PIXBUF:
g_object_unref (source->source.pixbuf);
source->source.pixbuf = NULL;
break;
default:
g_assert_not_reached();
}
source->type = GTK_ICON_SOURCE_EMPTY;
}
/**
* gtk_icon_source_set_filename:
* @source: a #GtkIconSource
* @filename: image file to use
*
* Sets the name of an image file to use as a base image when creating
* icon variants for #GtkIconSet. The filename must be absolute.
**/
void
gtk_icon_source_set_filename (GtkIconSource *source,
const gchar *filename)
{
g_return_if_fail (source != NULL);
g_return_if_fail (filename == NULL || g_path_is_absolute (filename));
if (source->type == GTK_ICON_SOURCE_FILENAME &&
source->source.filename == filename)
return;
icon_source_clear (source);
if (filename != NULL)
{
source->type = GTK_ICON_SOURCE_FILENAME;
source->source.filename = g_strdup (filename);
}
}
/**
* gtk_icon_source_set_icon_name
* @source: a #GtkIconSource
* @icon_name: name of icon to use
*
* 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.
**/
void
gtk_icon_source_set_icon_name (GtkIconSource *source,
const gchar *icon_name)
{
g_return_if_fail (source != NULL);
if (source->type == GTK_ICON_SOURCE_ICON_NAME &&
source->source.icon_name == icon_name)
return;
icon_source_clear (source);
if (icon_name != NULL)
{
source->type = GTK_ICON_SOURCE_ICON_NAME;
source->source.icon_name = g_strdup (icon_name);
}
}
/**
* gtk_icon_source_set_pixbuf:
* @source: a #GtkIconSource
* @pixbuf: pixbuf to use as a source
*
* Sets a pixbuf to use as a base image when creating icon variants
* for #GtkIconSet.
**/
void
gtk_icon_source_set_pixbuf (GtkIconSource *source,
GdkPixbuf *pixbuf)
{
g_return_if_fail (source != NULL);
g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
if (source->type == GTK_ICON_SOURCE_PIXBUF &&
source->source.pixbuf == pixbuf)
return;
icon_source_clear (source);
if (pixbuf != NULL)
{
source->type = GTK_ICON_SOURCE_PIXBUF;
source->source.pixbuf = g_object_ref (pixbuf);
}
}
/**
* gtk_icon_source_get_filename:
* @source: a #GtkIconSource
*
* 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.
*
* Return value: image filename. This string must not be modified
* or freed.
**/
G_CONST_RETURN gchar*
gtk_icon_source_get_filename (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, NULL);
if (source->type == GTK_ICON_SOURCE_FILENAME)
return source->source.filename;
else
return NULL;
}
/**
* gtk_icon_source_get_icon_name:
* @source: a #GtkIconSource
*
* 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.
*
* Return value: icon name. This string must not be modified or freed.
**/
G_CONST_RETURN gchar*
gtk_icon_source_get_icon_name (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, NULL);
if (source->type == GTK_ICON_SOURCE_ICON_NAME)
return source->source.icon_name;
else
return NULL;
}
/**
* gtk_icon_source_get_pixbuf:
* @source: a #GtkIconSource
*
* 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.
*
* Return value: source pixbuf
**/
GdkPixbuf*
gtk_icon_source_get_pixbuf (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, NULL);
if (source->type == GTK_ICON_SOURCE_PIXBUF)
return source->source.pixbuf;
else if (source->type == GTK_ICON_SOURCE_FILENAME)
return source->filename_pixbuf;
else
return NULL;
}
/**
* gtk_icon_source_set_direction_wildcarded:
* @source: a #GtkIconSource
* @setting: %TRUE to wildcard the text direction
*
* 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.
*
**/
void
gtk_icon_source_set_direction_wildcarded (GtkIconSource *source,
gboolean setting)
{
g_return_if_fail (source != NULL);
source->any_direction = setting != FALSE;
}
/**
* gtk_icon_source_set_state_wildcarded:
* @source: a #GtkIconSource
* @setting: %TRUE to wildcard the widget state
*
* 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.
**/
void
gtk_icon_source_set_state_wildcarded (GtkIconSource *source,
gboolean setting)
{
g_return_if_fail (source != NULL);
source->any_state = setting != FALSE;
}
/**
* gtk_icon_source_set_size_wildcarded:
* @source: a #GtkIconSource
* @setting: %TRUE to wildcard the widget state
*
* 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.
**/
void
gtk_icon_source_set_size_wildcarded (GtkIconSource *source,
gboolean setting)
{
g_return_if_fail (source != NULL);
source->any_size = setting != FALSE;
}
/**
* gtk_icon_source_get_size_wildcarded:
* @source: a #GtkIconSource
*
* Gets the value set by gtk_icon_source_set_size_wildcarded().
*
* Return value: %TRUE if this icon source is a base for any icon size variant
**/
gboolean
gtk_icon_source_get_size_wildcarded (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, TRUE);
return source->any_size;
}
/**
* gtk_icon_source_get_state_wildcarded:
* @source: a #GtkIconSource
*
* Gets the value set by gtk_icon_source_set_state_wildcarded().
*
* Return value: %TRUE if this icon source is a base for any widget state variant
**/
gboolean
gtk_icon_source_get_state_wildcarded (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, TRUE);
return source->any_state;
}
/**
* gtk_icon_source_get_direction_wildcarded:
* @source: a #GtkIconSource
*
* Gets the value set by gtk_icon_source_set_direction_wildcarded().
*
* Return value: %TRUE if this icon source is a base for any text direction variant
**/
gboolean
gtk_icon_source_get_direction_wildcarded (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, TRUE);
return source->any_direction;
}
/**
* gtk_icon_source_set_direction:
* @source: a #GtkIconSource
* @direction: text direction this source applies to
*
* 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.
*
**/
void
gtk_icon_source_set_direction (GtkIconSource *source,
GtkTextDirection direction)
{
g_return_if_fail (source != NULL);
source->direction = direction;
}
/**
* gtk_icon_source_set_state:
* @source: a #GtkIconSource
* @state: widget state this source applies to
*
* 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.
*
**/
void
gtk_icon_source_set_state (GtkIconSource *source,
GtkStateType state)
{
g_return_if_fail (source != NULL);
source->state = state;
}
/**
* gtk_icon_source_set_size:
* @source: a #GtkIconSource
* @size: icon size this source applies to
*
* 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.
*
**/
void
gtk_icon_source_set_size (GtkIconSource *source,
GtkIconSize size)
{
g_return_if_fail (source != NULL);
source->size = size;
}
/**
* gtk_icon_source_get_direction:
* @source: a #GtkIconSource
*
* Obtains the text direction this icon source applies to. The return
* value is only useful/meaningful if the text direction is <emphasis>not</emphasis>
* wildcarded.
*
* Return value: text direction this source matches
**/
GtkTextDirection
gtk_icon_source_get_direction (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, 0);
return source->direction;
}
/**
* gtk_icon_source_get_state:
* @source: a #GtkIconSource
*
* Obtains the widget state this icon source applies to. The return
* value is only useful/meaningful if the widget state is <emphasis>not</emphasis>
* wildcarded.
*
* Return value: widget state this source matches
**/
GtkStateType
gtk_icon_source_get_state (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, 0);
return source->state;
}
/**
* gtk_icon_source_get_size:
* @source: a #GtkIconSource
*
* Obtains the icon size this source applies to. The return value
* is only useful/meaningful if the icon size is <emphasis>not</emphasis> wildcarded.
*
* Return value: icon size this source matches.
**/
GtkIconSize
gtk_icon_source_get_size (const GtkIconSource *source)
{
g_return_val_if_fail (source != NULL, 0);
return source->size;
}
#define NUM_CACHED_ICONS 8
typedef struct _CachedIcon CachedIcon;
struct _CachedIcon
{
/* These must all match to use the cached pixbuf.
* If any don't match, we must re-render the pixbuf.
*/
GtkStyle *style;
GtkTextDirection direction;
GtkStateType state;
GtkIconSize size;
GdkPixbuf *pixbuf;
};
static void
ensure_cache_up_to_date (GtkIconSet *icon_set)
{
if (icon_set->cache_serial != cache_serial)
{
clear_cache (icon_set, TRUE);
icon_set->cache_serial = cache_serial;
}
}
static void
cached_icon_free (CachedIcon *icon)
{
g_object_unref (icon->pixbuf);
g_free (icon);
}
static GdkPixbuf *
find_in_cache (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size)
{
GSList *tmp_list;
GSList *prev;
ensure_cache_up_to_date (icon_set);
prev = NULL;
tmp_list = icon_set->cache;
while (tmp_list != NULL)
{
CachedIcon *icon = tmp_list->data;
if (icon->style == style &&
icon->direction == direction &&
icon->state == state &&
icon->size == size)
{
if (prev)
{
/* Move this icon to the front of the list. */
prev->next = tmp_list->next;
tmp_list->next = icon_set->cache;
icon_set->cache = tmp_list;
}
return icon->pixbuf;
}
prev = tmp_list;
tmp_list = g_slist_next (tmp_list);
}
return NULL;
}
static void
add_to_cache (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GdkPixbuf *pixbuf)
{
CachedIcon *icon;
ensure_cache_up_to_date (icon_set);
g_object_ref (pixbuf);
/* We have to ref the style, since if the style was finalized
* its address could be reused by another style, creating a
* really weird bug
*/
if (style)
g_object_ref (style);
icon = g_new (CachedIcon, 1);
icon_set->cache = g_slist_prepend (icon_set->cache, icon);
icon->style = style;
icon->direction = direction;
icon->state = state;
icon->size = size;
icon->pixbuf = pixbuf;
if (icon->style)
attach_to_style (icon_set, icon->style);
if (icon_set->cache_size >= NUM_CACHED_ICONS)
{
/* Remove oldest item in the cache */
GSList *tmp_list;
tmp_list = icon_set->cache;
/* Find next-to-last link */
g_assert (NUM_CACHED_ICONS > 2);
while (tmp_list->next->next)
tmp_list = tmp_list->next;
g_assert (tmp_list != NULL);
g_assert (tmp_list->next != NULL);
g_assert (tmp_list->next->next == NULL);
/* Free the last icon */
icon = tmp_list->next->data;
g_slist_free (tmp_list->next);
tmp_list->next = NULL;
cached_icon_free (icon);
}
}
static void
clear_cache (GtkIconSet *icon_set,
gboolean style_detach)
{
GSList *tmp_list;
GtkStyle *last_style = NULL;
tmp_list = icon_set->cache;
while (tmp_list != NULL)
{
CachedIcon *icon = tmp_list->data;
if (style_detach)
{
/* simple optimization for the case where the cache
* contains contiguous icons from the same style.
* it's safe to call detach_from_style more than
* once on the same style though.
*/
if (last_style != icon->style)
{
detach_from_style (icon_set, icon->style);
last_style = icon->style;
}
}
cached_icon_free (icon);
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (icon_set->cache);
icon_set->cache = NULL;
icon_set->cache_size = 0;
}
static GSList*
copy_cache (GtkIconSet *icon_set,
GtkIconSet *copy_recipient)
{
GSList *tmp_list;
GSList *copy = NULL;
ensure_cache_up_to_date (icon_set);
tmp_list = icon_set->cache;
while (tmp_list != NULL)
{
CachedIcon *icon = tmp_list->data;
CachedIcon *icon_copy = g_new (CachedIcon, 1);
*icon_copy = *icon;
if (icon_copy->style)
attach_to_style (copy_recipient, icon_copy->style);
g_object_ref (icon_copy->pixbuf);
icon_copy->size = icon->size;
copy = g_slist_prepend (copy, icon_copy);
tmp_list = g_slist_next (tmp_list);
}
return g_slist_reverse (copy);
}
static void
attach_to_style (GtkIconSet *icon_set,
GtkStyle *style)
{
GHashTable *table;
table = g_object_get_qdata (G_OBJECT (style),
g_quark_try_string ("gtk-style-icon-sets"));
if (table == NULL)
{
table = g_hash_table_new (NULL, NULL);
g_object_set_qdata_full (G_OBJECT (style),
g_quark_from_static_string ("gtk-style-icon-sets"),
table,
style_dnotify);
}
g_hash_table_insert (table, icon_set, icon_set);
}
static void
detach_from_style (GtkIconSet *icon_set,
GtkStyle *style)
{
GHashTable *table;
table = g_object_get_qdata (G_OBJECT (style),
g_quark_try_string ("gtk-style-icon-sets"));
if (table != NULL)
g_hash_table_remove (table, icon_set);
}
static void
iconsets_foreach (gpointer key,
gpointer value,
gpointer user_data)
{
GtkIconSet *icon_set = key;
/* We only need to remove cache entries for the given style;
* but that complicates things because in destroy notify
* we don't know which style got destroyed, and 95% of the
* time all cache entries will have the same style,
* so this is faster anyway.
*/
clear_cache (icon_set, FALSE);
}
static void
style_dnotify (gpointer data)
{
GHashTable *table = data;
g_hash_table_foreach (table, iconsets_foreach, NULL);
g_hash_table_destroy (table);
}
/* This allows the icon set to detect that its cache is out of date. */
void
_gtk_icon_set_invalidate_caches (void)
{
++cache_serial;
}
static void
listify_foreach (gpointer key, gpointer value, gpointer data)
{
GSList **list = data;
*list = g_slist_prepend (*list, key);
}
static GSList *
g_hash_table_get_keys (GHashTable *table)
{
GSList *list = NULL;
g_hash_table_foreach (table, listify_foreach, &list);
return list;
}
/**
* _gtk_icon_factory_list_ids:
*
* Gets all known IDs stored in an existing icon factory.
* The strings in the returned list aren't copied.
* The list itself should be freed.
*
* Return value: List of ids in icon factories
**/
GSList*
_gtk_icon_factory_list_ids (void)
{
GSList *tmp_list;
GSList *ids;
ids = NULL;
ensure_default_icons ();
tmp_list = all_icon_factories;
while (tmp_list != NULL)
{
GSList *these_ids;
GtkIconFactory *factory = GTK_ICON_FACTORY (tmp_list->data);
these_ids = g_hash_table_get_keys (factory->icons);
ids = g_slist_concat (ids, these_ids);
tmp_list = g_slist_next (tmp_list);
}
return ids;
}
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