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gtk2/gtk/gtkiconfactory.c
Matthias Clasen 39d4207ab7 Use existing mime type for GTK_FILE stock icon 
document-x-generic is not actually a mimetype. Using text-x-generic
instead lets us work out-of-the-box in a11y themes.
2011-03-06 00:31:20 -05:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
* 2008 Johan Dahlin
* 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 "config.h"
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "gtkiconfactory.h"
#include "gtkiconcache.h"
#include "gtkdebug.h"
#include "gtkicontheme.h"
#include "gtksettingsprivate.h"
#include "gtkstock.h"
#include "gtkwidget.h"
#include "gtkintl.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtktypebuiltins.h"
static GSList *all_icon_factories = NULL;
struct _GtkIconFactoryPrivate
{
GHashTable *icons;
};
typedef enum {
GTK_ICON_SOURCE_EMPTY,
GTK_ICON_SOURCE_ICON_NAME,
GTK_ICON_SOURCE_STATIC_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 void
gtk_icon_factory_buildable_init (GtkBuildableIface *iface);
static gboolean gtk_icon_factory_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_icon_factory_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *user_data);
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 }
G_DEFINE_TYPE_WITH_CODE (GtkIconFactory, gtk_icon_factory, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_icon_factory_buildable_init))
static void
gtk_icon_factory_init (GtkIconFactory *factory)
{
GtkIconFactoryPrivate *priv;
factory->priv = G_TYPE_INSTANCE_GET_PRIVATE (factory,
GTK_TYPE_ICON_FACTORY,
GtkIconFactoryPrivate);
priv = factory->priv;
priv->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);
object_class->finalize = gtk_icon_factory_finalize;
g_type_class_add_private (klass, sizeof (GtkIconFactoryPrivate));
}
static void
gtk_icon_factory_buildable_init (GtkBuildableIface *iface)
{
iface->custom_tag_start = gtk_icon_factory_buildable_custom_tag_start;
iface->custom_tag_end = gtk_icon_factory_buildable_custom_tag_end;
}
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);
GtkIconFactoryPrivate *priv = factory->priv;
all_icon_factories = g_slist_remove (all_icon_factories, factory);
g_hash_table_foreach (priv->icons, free_icon_set, NULL);
g_hash_table_destroy (priv->icons);
G_OBJECT_CLASS (gtk_icon_factory_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)
{
GtkIconFactoryPrivate *priv = factory->priv;
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 (priv->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 (priv->icons, old_key, icon_set);
else
g_hash_table_insert (priv->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: (transfer none): icon set of @stock_id.
*/
GtkIconSet *
gtk_icon_factory_lookup (GtkIconFactory *factory,
const gchar *stock_id)
{
GtkIconFactoryPrivate *priv;
g_return_val_if_fail (GTK_IS_ICON_FACTORY (factory), NULL);
g_return_val_if_fail (stock_id != NULL, NULL);
priv = factory->priv;
return g_hash_table_lookup (priv->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);
}
void
_gtk_icon_factory_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: (transfer none): 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);
}
_gtk_icon_factory_ensure_default_icons ();
return gtk_icon_factory_lookup (gtk_default_icons, stock_id);
}
static void
register_stock_icon (GtkIconFactory *factory,
const gchar *stock_id,
const gchar *icon_name)
{
GtkIconSet *set = gtk_icon_set_new ();
GtkIconSource source = GTK_ICON_SOURCE_INIT (TRUE, TRUE, TRUE);
source.type = GTK_ICON_SOURCE_STATIC_ICON_NAME;
source.source.icon_name = (gchar *)icon_name;
source.direction = GTK_TEXT_DIR_NONE;
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 *icon_name)
{
GtkIconSet *set = gtk_icon_set_new ();
GtkIconSource source = GTK_ICON_SOURCE_INIT (FALSE, TRUE, TRUE);
source.type = GTK_ICON_SOURCE_STATIC_ICON_NAME;
source.source.icon_name = (gchar *)icon_name;
source.direction = GTK_TEXT_DIR_LTR;
gtk_icon_set_add_source (set, &source);
source.type = GTK_ICON_SOURCE_STATIC_ICON_NAME;
source.source.icon_name = (gchar *)icon_name;
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
get_default_icons (GtkIconFactory *factory)
{
/* KEEP IN SYNC with gtkstock.c */
register_stock_icon (factory, GTK_STOCK_DIALOG_AUTHENTICATION, "dialog-password");
register_stock_icon (factory, GTK_STOCK_DIALOG_ERROR, "dialog-error");
register_stock_icon (factory, GTK_STOCK_DIALOG_INFO, "dialog-information");
register_stock_icon (factory, GTK_STOCK_DIALOG_QUESTION, "dialog-question");
register_stock_icon (factory, GTK_STOCK_DIALOG_WARNING, "dialog-warning");
register_stock_icon (factory, GTK_STOCK_DND, GTK_STOCK_DND);
register_stock_icon (factory, GTK_STOCK_DND_MULTIPLE, GTK_STOCK_DND_MULTIPLE);
register_stock_icon (factory, GTK_STOCK_APPLY, GTK_STOCK_APPLY);
register_stock_icon (factory, GTK_STOCK_CANCEL, GTK_STOCK_CANCEL);
register_stock_icon (factory, GTK_STOCK_NO, GTK_STOCK_NO);
register_stock_icon (factory, GTK_STOCK_OK, GTK_STOCK_OK);
register_stock_icon (factory, GTK_STOCK_YES, GTK_STOCK_YES);
register_stock_icon (factory, GTK_STOCK_CLOSE, "window-close");
register_stock_icon (factory, GTK_STOCK_ADD, "list-add");
register_stock_icon (factory, GTK_STOCK_JUSTIFY_CENTER, "format-justify-center");
register_stock_icon (factory, GTK_STOCK_JUSTIFY_FILL, "format-justify-fill");
register_stock_icon (factory, GTK_STOCK_JUSTIFY_LEFT, "format-justify-left");
register_stock_icon (factory, GTK_STOCK_JUSTIFY_RIGHT, "format-justify-right");
register_stock_icon (factory, GTK_STOCK_GOTO_BOTTOM, "go-bottom");
register_stock_icon (factory, GTK_STOCK_CDROM, "media-optical");
register_stock_icon (factory, GTK_STOCK_CONVERT, GTK_STOCK_CONVERT);
register_stock_icon (factory, GTK_STOCK_COPY, "edit-copy");
register_stock_icon (factory, GTK_STOCK_CUT, "edit-cut");
register_stock_icon (factory, GTK_STOCK_GO_DOWN, "go-down");
register_stock_icon (factory, GTK_STOCK_EXECUTE, "system-run");
register_stock_icon (factory, GTK_STOCK_QUIT, "application-exit");
register_bidi_stock_icon (factory, GTK_STOCK_GOTO_FIRST, "go-first");
register_stock_icon (factory, GTK_STOCK_SELECT_FONT, GTK_STOCK_SELECT_FONT);
register_stock_icon (factory, GTK_STOCK_FULLSCREEN, "view-fullscreen");
register_stock_icon (factory, GTK_STOCK_LEAVE_FULLSCREEN, "view-restore");
register_stock_icon (factory, GTK_STOCK_HARDDISK, "drive-harddisk");
register_stock_icon (factory, GTK_STOCK_HELP, "help-contents");
register_stock_icon (factory, GTK_STOCK_HOME, "go-home");
register_stock_icon (factory, GTK_STOCK_INFO, "dialog-information");
register_bidi_stock_icon (factory, GTK_STOCK_JUMP_TO, "go-jump");
register_bidi_stock_icon (factory, GTK_STOCK_GOTO_LAST, "go-last");
register_bidi_stock_icon (factory, GTK_STOCK_GO_BACK, "go-previous");
register_stock_icon (factory, GTK_STOCK_MISSING_IMAGE, "image-missing");
register_stock_icon (factory, GTK_STOCK_NETWORK, "network-idle");
register_stock_icon (factory, GTK_STOCK_NEW, "document-new");
register_stock_icon (factory, GTK_STOCK_OPEN, "document-open");
register_stock_icon (factory, GTK_STOCK_ORIENTATION_PORTRAIT, GTK_STOCK_ORIENTATION_PORTRAIT);
register_stock_icon (factory, GTK_STOCK_ORIENTATION_LANDSCAPE, GTK_STOCK_ORIENTATION_LANDSCAPE);
register_stock_icon (factory, GTK_STOCK_ORIENTATION_REVERSE_PORTRAIT, GTK_STOCK_ORIENTATION_REVERSE_PORTRAIT);
register_stock_icon (factory, GTK_STOCK_ORIENTATION_REVERSE_LANDSCAPE, GTK_STOCK_ORIENTATION_REVERSE_LANDSCAPE);
register_stock_icon (factory, GTK_STOCK_PAGE_SETUP, GTK_STOCK_PAGE_SETUP);
register_stock_icon (factory, GTK_STOCK_PASTE, "edit-paste");
register_stock_icon (factory, GTK_STOCK_PREFERENCES, GTK_STOCK_PREFERENCES);
register_stock_icon (factory, GTK_STOCK_PRINT, "document-print");
register_stock_icon (factory, GTK_STOCK_PRINT_ERROR, "printer-error");
register_stock_icon (factory, GTK_STOCK_PRINT_PAUSED, "printer-paused");
register_stock_icon (factory, GTK_STOCK_PRINT_PREVIEW, "document-print-preview");
register_stock_icon (factory, GTK_STOCK_PRINT_REPORT, "printer-info");
register_stock_icon (factory, GTK_STOCK_PRINT_WARNING, "printer-warning");
register_stock_icon (factory, GTK_STOCK_PROPERTIES, "document-properties");
register_bidi_stock_icon (factory, GTK_STOCK_REDO, "edit-redo");
register_stock_icon (factory, GTK_STOCK_REMOVE, "list-remove");
register_stock_icon (factory, GTK_STOCK_REFRESH, "view-refresh");
register_bidi_stock_icon (factory, GTK_STOCK_REVERT_TO_SAVED, "document-revert");
register_bidi_stock_icon (factory, GTK_STOCK_GO_FORWARD, "go-next");
register_stock_icon (factory, GTK_STOCK_SAVE, "document-save");
register_stock_icon (factory, GTK_STOCK_FLOPPY, "media-floppy");
register_stock_icon (factory, GTK_STOCK_SAVE_AS, "document-save-as");
register_stock_icon (factory, GTK_STOCK_FIND, "edit-find");
register_stock_icon (factory, GTK_STOCK_FIND_AND_REPLACE, "edit-find-replace");
register_stock_icon (factory, GTK_STOCK_SORT_DESCENDING, "view-sort-descending");
register_stock_icon (factory, GTK_STOCK_SORT_ASCENDING, "view-sort-ascending");
register_stock_icon (factory, GTK_STOCK_SPELL_CHECK, "tools-check-spelling");
register_stock_icon (factory, GTK_STOCK_STOP, "process-stop");
register_stock_icon (factory, GTK_STOCK_BOLD, "format-text-bold");
register_stock_icon (factory, GTK_STOCK_ITALIC, "format-text-italic");
register_stock_icon (factory, GTK_STOCK_STRIKETHROUGH, "format-text-strikethrough");
register_stock_icon (factory, GTK_STOCK_UNDERLINE, "format-text-underline");
register_bidi_stock_icon (factory, GTK_STOCK_INDENT, "format-indent-more");
register_bidi_stock_icon (factory, GTK_STOCK_UNINDENT, "format-indent-less");
register_stock_icon (factory, GTK_STOCK_GOTO_TOP, "go-top");
register_stock_icon (factory, GTK_STOCK_DELETE, "edit-delete");
register_bidi_stock_icon (factory, GTK_STOCK_UNDELETE, GTK_STOCK_UNDELETE);
register_bidi_stock_icon (factory, GTK_STOCK_UNDO, "edit-undo");
register_stock_icon (factory, GTK_STOCK_GO_UP, "go-up");
register_stock_icon (factory, GTK_STOCK_FILE, "text-x-generic");
register_stock_icon (factory, GTK_STOCK_DIRECTORY, "folder");
register_stock_icon (factory, GTK_STOCK_ABOUT, "help-about");
register_stock_icon (factory, GTK_STOCK_CONNECT, GTK_STOCK_CONNECT);
register_stock_icon (factory, GTK_STOCK_DISCONNECT, GTK_STOCK_DISCONNECT);
register_stock_icon (factory, GTK_STOCK_EDIT, GTK_STOCK_EDIT);
register_stock_icon (factory, GTK_STOCK_CAPS_LOCK_WARNING, GTK_STOCK_CAPS_LOCK_WARNING);
register_bidi_stock_icon (factory, GTK_STOCK_MEDIA_FORWARD, "media-seek-forward");
register_bidi_stock_icon (factory, GTK_STOCK_MEDIA_NEXT, "media-skip-forward");
register_stock_icon (factory, GTK_STOCK_MEDIA_PAUSE, "media-playback-pause");
register_bidi_stock_icon (factory, GTK_STOCK_MEDIA_PLAY, "media-playback-start");
register_bidi_stock_icon (factory, GTK_STOCK_MEDIA_PREVIOUS, "media-skip-backward");
register_stock_icon (factory, GTK_STOCK_MEDIA_RECORD, "media-record");
register_bidi_stock_icon (factory, GTK_STOCK_MEDIA_REWIND, "media-seek-backward");
register_stock_icon (factory, GTK_STOCK_MEDIA_STOP, "media-playback-stop");
register_stock_icon (factory, GTK_STOCK_INDEX, GTK_STOCK_INDEX);
register_stock_icon (factory, GTK_STOCK_ZOOM_100, "zoom-original");
register_stock_icon (factory, GTK_STOCK_ZOOM_IN, "zoom-in");
register_stock_icon (factory, GTK_STOCK_ZOOM_OUT, "zoom-out");
register_stock_icon (factory, GTK_STOCK_ZOOM_FIT, "zoom-fit-best");
register_stock_icon (factory, GTK_STOCK_SELECT_ALL, "edit-select-all");
register_stock_icon (factory, GTK_STOCK_CLEAR, "edit-clear");
register_stock_icon (factory, GTK_STOCK_SELECT_COLOR, GTK_STOCK_SELECT_COLOR);
register_stock_icon (factory, GTK_STOCK_COLOR_PICKER, GTK_STOCK_COLOR_PICKER);
}
/************************************************************
* 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_style_context_reset_widgets (_gtk_settings_get_screen (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);
}
static 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 == (GtkIconSize)-1)
return FALSE;
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: (type int): an icon size
* @width: (out): location to store icon width
* @height: (out): 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_pixbuf() 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: (type int): an icon size
* @width: (out): location to store icon width
* @height: (out): 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_pixbuf() 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: (type int): 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: (type int): 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 %u 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.
*
* Looks up the icon size associated with @name.
*
* Return value: (type int): the icon size
*/
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: (type int): 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,
GtkStyleContext *style_context,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size);
static void add_to_cache (GtkIconSet *icon_set,
GtkStyleContext *style_context,
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,
GtkStyleContext *style_context);
static void detach_from_style (GtkIconSet *icon_set,
GtkStyleContext *style_context);
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_pixbuf() 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);
}
}
G_DEFINE_BOXED_TYPE (GtkIconSet, gtk_icon_set,
gtk_icon_set_ref,
gtk_icon_set_unref)
/**
* 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 || size == (GtkIconSize)-1 || (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,
GtkStyleContext *context,
GtkIconSize size)
{
GdkPixbuf *pixbuf;
GdkPixbuf *tmp_pixbuf;
GtkIconSource tmp_source;
GdkScreen *screen;
GtkIconTheme *icon_theme;
GtkSettings *settings;
gint width, height, pixel_size;
gint *sizes, *s, dist;
GError *error = NULL;
screen = gtk_style_context_get_screen (context);
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))
{
if (size == (GtkIconSize)-1)
{
/* Find an available size close to 48 */
sizes = gtk_icon_theme_get_icon_sizes (icon_theme, icon_source->source.icon_name);
dist = 1000;
width = height = 48;
for (s = sizes; *s; s++)
{
if (*s == -1)
{
width = height = 48;
break;
}
if (*s < 48)
{
if (48 - *s < dist)
{
width = height = *s;
dist = 48 - *s;
}
}
else
{
if (*s - 48 < dist)
{
width = height = *s;
dist = *s - 48;
}
}
}
g_free (sizes);
}
else
{
g_warning ("Invalid icon size %u\n", size);
width = height = 24;
}
}
pixel_size = MIN (width, height);
if (icon_source->direction != GTK_TEXT_DIR_NONE)
{
gchar *suffix[3] = { NULL, "-ltr", "-rtl" };
gchar *names[3];
GtkIconInfo *info;
names[0] = g_strconcat (icon_source->source.icon_name, suffix[icon_source->direction], NULL);
names[1] = icon_source->source.icon_name;
names[2] = NULL;
info = gtk_icon_theme_choose_icon (icon_theme,
(const char **) names,
pixel_size, GTK_ICON_LOOKUP_USE_BUILTIN);
g_free (names[0]);
if (info)
{
tmp_pixbuf = gtk_icon_info_load_icon (info, &error);
gtk_icon_info_free (info);
}
else
tmp_pixbuf = NULL;
}
else
{
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 '%s' for stock: %s",
icon_source->source.icon_name, error ? error->message : "");
if (error)
g_error_free (error);
return NULL;
}
tmp_source = *icon_source;
tmp_source.type = GTK_ICON_SOURCE_PIXBUF;
tmp_source.source.pixbuf = tmp_pixbuf;
pixbuf = gtk_render_icon_pixbuf (context, &tmp_source, -1);
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,
GtkStyleContext *context,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size)
{
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_render_icon_pixbuf (context, source, size);
if (!pixbuf)
{
g_warning ("Failed to render icon");
failed = g_slist_prepend (failed, source);
}
break;
case GTK_ICON_SOURCE_ICON_NAME:
case GTK_ICON_SOURCE_STATIC_ICON_NAME:
pixbuf = render_icon_name_pixbuf (source, context, size);
if (!pixbuf)
failed = g_slist_prepend (failed, source);
break;
case GTK_ICON_SOURCE_EMPTY:
g_assert_not_reached ();
}
}
g_slist_free (failed);
return pixbuf;
}
extern GtkIconCache *_builtin_cache;
static GdkPixbuf*
render_fallback_image (GtkStyleContext *context,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size)
{
/* 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)
{
gint index;
GdkPixbuf *pixbuf;
_gtk_icon_theme_ensure_builtin_cache ();
index = _gtk_icon_cache_get_directory_index (_builtin_cache, "24");
pixbuf = _gtk_icon_cache_get_icon (_builtin_cache,
GTK_STOCK_MISSING_IMAGE,
index);
gtk_icon_source_set_pixbuf (&fallback_source, pixbuf);
g_object_unref (pixbuf);
}
return gtk_render_icon_pixbuf (context, &fallback_source, size);
}
/**
* gtk_icon_set_render_icon_pixbuf:
* @icon_set: a #GtkIconSet
* @context: a #GtkStyleContext
* @size: (type int): icon size. A size of (GtkIconSize)-1
* means render at the size of the source and don't scale.
*
* Renders an icon using gtk_render_icon_pixbuf(). In most cases,
* gtk_widget_render_icon_pixbuf() 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: (transfer full): a #GdkPixbuf to be displayed
*
* Since: 3.0
*/
GdkPixbuf *
gtk_icon_set_render_icon_pixbuf (GtkIconSet *icon_set,
GtkStyleContext *context,
GtkIconSize size)
{
GdkPixbuf *icon = NULL;
GtkStateFlags flags = 0;
GtkStateType state;
GtkTextDirection direction;
g_return_val_if_fail (icon_set != NULL, NULL);
g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
flags = gtk_style_context_get_state (context);
if (flags & GTK_STATE_FLAG_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else
state = GTK_STATE_NORMAL;
direction = gtk_style_context_get_direction (context);
if (icon_set->sources)
{
icon = find_in_cache (icon_set, context, direction, state, size);
if (icon)
{
g_object_ref (icon);
return icon;
}
}
if (icon_set->sources)
icon = find_and_render_icon_source (icon_set, context, direction, state, size);
if (icon == NULL)
icon = render_fallback_image (context, direction, state, size);
add_to_cache (icon_set, context, direction, state, size, icon);
return icon;
}
/**
* gtk_icon_set_render_icon:
* @icon_set: a #GtkIconSet
* @style: (allow-none): a #GtkStyle associated with @widget, or %NULL
* @direction: text direction
* @state: widget state
* @size: (type int): icon size. A size of (GtkIconSize)-1
* means render at the size of the source and don't scale.
* @widget: (allow-none): widget that will display the icon, or %NULL.
* The only use that is typically made of this
* is to determine the appropriate #GdkScreen.
* @detail: (allow-none): 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: (transfer full): a #GdkPixbuf to be displayed
*
* Deprecated: 3.0: Use gtk_icon_set_render_icon_pixbuf() instead
*/
GdkPixbuf*
gtk_icon_set_render_icon (GtkIconSet *icon_set,
GtkStyle *style,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GtkWidget *widget,
const char *detail)
{
GdkPixbuf *icon;
GtkStyleContext *context = NULL;
GtkStateFlags flags = 0;
g_return_val_if_fail (icon_set != NULL, NULL);
g_return_val_if_fail (style == NULL || GTK_IS_STYLE (style), NULL);
if (style && gtk_style_has_context (style))
{
g_object_get (style, "context", &context, NULL);
/* g_object_get returns a refed object */
if (context)
g_object_unref (context);
}
else if (widget)
{
context = gtk_widget_get_style_context (widget);
}
if (!context)
return render_fallback_image (context, direction, state, size);
gtk_style_context_save (context);
switch (state)
{
case GTK_STATE_PRELIGHT:
flags |= GTK_STATE_FLAG_PRELIGHT;
break;
case GTK_STATE_INSENSITIVE:
flags |= GTK_STATE_FLAG_INSENSITIVE;
break;
default:
break;
}
gtk_style_context_set_state (context, flags);
gtk_style_context_set_direction (context, direction);
icon = gtk_icon_set_render_icon_pixbuf (icon_set, context, size);
gtk_style_context_restore (context);
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: (array length=n_sizes) (out) (type int): 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:
case GTK_ICON_SOURCE_STATIC_ICON_NAME:
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);
}
G_DEFINE_BOXED_TYPE (GtkIconSource, gtk_icon_source,
gtk_icon_source_copy,
gtk_icon_source_free)
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);
/* fall thru */
case GTK_ICON_SOURCE_STATIC_ICON_NAME:
source->source.icon_name = NULL;
break;
case GTK_ICON_SOURCE_FILENAME:
g_free (source->source.filename);
source->source.filename = NULL;
if (source->filename_pixbuf)
g_object_unref (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: (type 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: (allow-none): 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: (type filename): 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 ||
source->type == GTK_ICON_SOURCE_STATIC_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: (transfer none): 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: (type int): 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: (type int): 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.
*/
GtkStyleContext *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_object_unref (icon->style);
g_free (icon);
}
static GdkPixbuf *
find_in_cache (GtkIconSet *icon_set,
GtkStyleContext *style_context,
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_context &&
icon->direction == direction &&
icon->state == state &&
(size == (GtkIconSize)-1 || 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,
GtkStyleContext *style_context,
GtkTextDirection direction,
GtkStateType state,
GtkIconSize size,
GdkPixbuf *pixbuf)
{
CachedIcon *icon;
ensure_cache_up_to_date (icon_set);
g_object_ref (pixbuf);
icon = g_new (CachedIcon, 1);
icon_set->cache = g_slist_prepend (icon_set->cache, icon);
icon_set->cache_size++;
icon->style = g_object_ref (style_context);
icon->direction = direction;
icon->state = state;
icon->size = size;
icon->pixbuf = pixbuf;
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 *cache, *tmp_list;
GtkStyleContext *last_style = NULL;
cache = icon_set->cache;
icon_set->cache = NULL;
icon_set->cache_size = 0;
tmp_list = 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 (cache);
}
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;
attach_to_style (copy_recipient, icon_copy->style);
g_object_ref (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,
GtkStyleContext *style_context)
{
GHashTable *table;
table = g_object_get_qdata (G_OBJECT (style_context),
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_context),
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,
GtkStyleContext *style_context)
{
GHashTable *table;
table = g_object_get_qdata (G_OBJECT (style_context),
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;
}
/**
* _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
*/
GList*
_gtk_icon_factory_list_ids (void)
{
GSList *tmp_list;
GList *ids;
ids = NULL;
_gtk_icon_factory_ensure_default_icons ();
tmp_list = all_icon_factories;
while (tmp_list != NULL)
{
GList *these_ids;
GtkIconFactory *factory = GTK_ICON_FACTORY (tmp_list->data);
GtkIconFactoryPrivate *priv = factory->priv;
these_ids = g_hash_table_get_keys (priv->icons);
ids = g_list_concat (ids, these_ids);
tmp_list = g_slist_next (tmp_list);
}
return ids;
}
typedef struct {
GSList *sources;
gboolean in_source;
} IconFactoryParserData;
typedef struct {
gchar *stock_id;
gchar *filename;
gchar *icon_name;
GtkTextDirection direction;
GtkIconSize size;
GtkStateType state;
} IconSourceParserData;
static void
icon_source_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
gint i;
gchar *stock_id = NULL;
gchar *filename = NULL;
gchar *icon_name = NULL;
gint size = -1;
gint direction = -1;
gint state = -1;
IconFactoryParserData *parser_data;
IconSourceParserData *source_data;
gchar *error_msg;
GQuark error_domain;
parser_data = (IconFactoryParserData*)user_data;
if (!parser_data->in_source)
{
if (strcmp (element_name, "sources") != 0)
{
error_msg = g_strdup_printf ("Unexpected element %s, expected <sources>", element_name);
error_domain = GTK_BUILDER_ERROR_INVALID_TAG;
goto error;
}
parser_data->in_source = TRUE;
return;
}
else
{
if (strcmp (element_name, "source") != 0)
{
error_msg = g_strdup_printf ("Unexpected element %s, expected <source>", element_name);
error_domain = GTK_BUILDER_ERROR_INVALID_TAG;
goto error;
}
}
for (i = 0; names[i]; i++)
{
if (strcmp (names[i], "stock-id") == 0)
stock_id = g_strdup (values[i]);
else if (strcmp (names[i], "filename") == 0)
filename = g_strdup (values[i]);
else if (strcmp (names[i], "icon-name") == 0)
icon_name = g_strdup (values[i]);
else if (strcmp (names[i], "size") == 0)
{
if (!_gtk_builder_enum_from_string (GTK_TYPE_ICON_SIZE,
values[i],
&size,
error))
return;
}
else if (strcmp (names[i], "direction") == 0)
{
if (!_gtk_builder_enum_from_string (GTK_TYPE_TEXT_DIRECTION,
values[i],
&direction,
error))
return;
}
else if (strcmp (names[i], "state") == 0)
{
if (!_gtk_builder_enum_from_string (GTK_TYPE_STATE_TYPE,
values[i],
&state,
error))
return;
}
else
{
error_msg = g_strdup_printf ("'%s' is not a valid attribute of <%s>",
names[i], "source");
error_domain = GTK_BUILDER_ERROR_INVALID_ATTRIBUTE;
goto error;
}
}
if (!stock_id)
{
error_msg = g_strdup_printf ("<source> requires a stock_id");
error_domain = GTK_BUILDER_ERROR_MISSING_ATTRIBUTE;
goto error;
}
source_data = g_slice_new (IconSourceParserData);
source_data->stock_id = stock_id;
source_data->filename = filename;
source_data->icon_name = icon_name;
source_data->size = size;
source_data->direction = direction;
source_data->state = state;
parser_data->sources = g_slist_prepend (parser_data->sources, source_data);
return;
error:
{
gchar *tmp;
gint line_number, char_number;
g_markup_parse_context_get_position (context, &line_number, &char_number);
tmp = g_strdup_printf ("%s:%d:%d %s", "input",
line_number, char_number, error_msg);
g_set_error_literal (error, GTK_BUILDER_ERROR, error_domain, tmp);
g_free (tmp);
g_free (stock_id);
g_free (filename);
g_free (icon_name);
return;
}
}
static const GMarkupParser icon_source_parser =
{
icon_source_start_element,
};
static gboolean
gtk_icon_factory_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
g_assert (buildable);
if (strcmp (tagname, "sources") == 0)
{
IconFactoryParserData *parser_data;
parser_data = g_slice_new0 (IconFactoryParserData);
*parser = icon_source_parser;
*data = parser_data;
return TRUE;
}
return FALSE;
}
static void
gtk_icon_factory_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *user_data)
{
GtkIconFactory *icon_factory;
icon_factory = GTK_ICON_FACTORY (buildable);
if (strcmp (tagname, "sources") == 0)
{
IconFactoryParserData *parser_data;
GtkIconSource *icon_source;
GtkIconSet *icon_set;
GSList *l;
parser_data = (IconFactoryParserData*)user_data;
for (l = parser_data->sources; l; l = l->next)
{
IconSourceParserData *source_data = l->data;
icon_set = gtk_icon_factory_lookup (icon_factory, source_data->stock_id);
if (!icon_set)
{
icon_set = gtk_icon_set_new ();
gtk_icon_factory_add (icon_factory, source_data->stock_id, icon_set);
gtk_icon_set_unref (icon_set);
}
icon_source = gtk_icon_source_new ();
if (source_data->filename)
{
gchar *filename;
filename = _gtk_builder_get_absolute_filename (builder, source_data->filename);
gtk_icon_source_set_filename (icon_source, filename);
g_free (filename);
}
if (source_data->icon_name)
gtk_icon_source_set_icon_name (icon_source, source_data->icon_name);
if (source_data->size != -1)
{
gtk_icon_source_set_size (icon_source, source_data->size);
gtk_icon_source_set_size_wildcarded (icon_source, FALSE);
}
if (source_data->direction != -1)
{
gtk_icon_source_set_direction (icon_source, source_data->direction);
gtk_icon_source_set_direction_wildcarded (icon_source, FALSE);
}
if (source_data->state != -1)
{
gtk_icon_source_set_state (icon_source, source_data->state);
gtk_icon_source_set_state_wildcarded (icon_source, FALSE);
}
/* Inline source_add() to avoid creating a copy */
g_assert (icon_source->type != GTK_ICON_SOURCE_EMPTY);
icon_set->sources = g_slist_insert_sorted (icon_set->sources,
icon_source,
icon_source_compare);
g_free (source_data->stock_id);
g_free (source_data->filename);
g_free (source_data->icon_name);
g_slice_free (IconSourceParserData, source_data);
}
g_slist_free (parser_data->sources);
g_slice_free (IconFactoryParserData, parser_data);
/* TODO: Add an attribute/tag to prevent this.
* Usually it's the right thing to do though.
*/
gtk_icon_factory_add_default (icon_factory);
}
}
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