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gtk2/gtk/gtkicontheme.c
Matthias Clasen 97ec1cdf4f Add a note regarding icon theme changes. 
2005-08-22  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtkicontheme.c (gtk_icon_theme_load_icon): Add a note
	regarding icon theme changes.

	* gtk/gtkiconcache.c (_gtk_icon_cache_get_icon): When returning
	pixbufs which are backed by the mmapped memory of an icon cache,
	increase the refcount of the icon cache, so that the memory is not
	munmapped away underneath the pixbuf upon icon theme changes.
	(#314170, Kjartan Maraas)
2005-08-22 16:38:46 +00:00

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/* GtkIconTheme - a loader for icon themes
* gtk-icon-theme.c Copyright (C) 2002, 2003 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.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <glib/gstdio.h>
#ifdef G_OS_WIN32
#ifndef S_ISDIR
#define S_ISDIR(mode) ((mode)&_S_IFDIR)
#endif
#endif /* G_OS_WIN32 */
#include "gtkicontheme.h"
#include "gtkiconfactory.h"
#include "gtkiconcache.h"
#include "gtkintl.h"
#include "gtksettings.h"
#include "gtkprivate.h"
#include "gtkalias.h"
#define DEFAULT_THEME_NAME "hicolor"
typedef enum
{
ICON_THEME_DIR_FIXED,
ICON_THEME_DIR_SCALABLE,
ICON_THEME_DIR_THRESHOLD,
ICON_THEME_DIR_UNTHEMED
} IconThemeDirType;
/* In reverse search order: */
typedef enum
{
ICON_SUFFIX_NONE = 0,
ICON_SUFFIX_XPM = 1 << 0,
ICON_SUFFIX_SVG = 1 << 1,
ICON_SUFFIX_PNG = 1 << 2,
HAS_ICON_FILE = 1 << 3
} IconSuffix;
struct _GtkIconThemePrivate
{
guint custom_theme : 1;
guint is_screen_singleton : 1;
guint pixbuf_supports_svg : 1;
char *current_theme;
char **search_path;
int search_path_len;
gboolean themes_valid;
/* A list of all the themes needed to look up icons.
* In search order, without duplicates
*/
GList *themes;
GHashTable *unthemed_icons;
/* Note: The keys of this hashtable are owned by the
* themedir and unthemed hashtables.
*/
GHashTable *all_icons;
/* GdkScreen for the icon theme (may be NULL)
*/
GdkScreen *screen;
/* time when we last stat:ed for theme changes */
long last_stat_time;
GList *dir_mtimes;
gulong reset_styles_idle;
};
struct _GtkIconInfo
{
/* Information about the source
*/
gchar *filename;
#ifdef G_OS_WIN32
/* System codepage version of filename, for DLL ABI backward
* compatibility functions.
*/
gchar *cp_filename;
#endif
GdkPixbuf *builtin_pixbuf;
/* Cache pixbuf (if there is any) */
GdkPixbuf *cache_pixbuf;
GtkIconData *data;
/* Information about the directory where
* the source was found
*/
IconThemeDirType dir_type;
gint dir_size;
gint threshold;
/* Parameters influencing the scaled icon
*/
gint desired_size;
gboolean raw_coordinates;
/* Cached information if we go ahead and try to load
* the icon.
*/
GdkPixbuf *pixbuf;
GError *load_error;
gdouble scale;
};
typedef struct
{
char *name;
char *display_name;
char *comment;
char *example;
/* In search order */
GList *dirs;
} IconTheme;
typedef struct
{
IconThemeDirType type;
GQuark context;
int size;
int min_size;
int max_size;
int threshold;
char *dir;
char *subdir;
GtkIconCache *cache;
GHashTable *icons;
GHashTable *icon_data;
} IconThemeDir;
typedef struct
{
char *svg_filename;
char *no_svg_filename;
} UnthemedIcon;
typedef struct
{
gint size;
GdkPixbuf *pixbuf;
} BuiltinIcon;
typedef struct
{
char *dir;
time_t mtime; /* 0 == not existing or not a dir */
GtkIconCache *cache;
} IconThemeDirMtime;
static void gtk_icon_theme_class_init (GtkIconThemeClass *klass);
static void gtk_icon_theme_init (GtkIconTheme *icon_theme);
static void gtk_icon_theme_finalize (GObject *object);
static void theme_dir_destroy (IconThemeDir *dir);
static void theme_destroy (IconTheme *theme);
static GtkIconInfo *theme_lookup_icon (IconTheme *theme,
const char *icon_name,
int size,
gboolean allow_svg,
gboolean use_default_icons);
static void theme_list_icons (IconTheme *theme,
GHashTable *icons,
GQuark context);
static void theme_subdir_load (GtkIconTheme *icon_theme,
IconTheme *theme,
GKeyFile *theme_file,
char *subdir);
static void do_theme_change (GtkIconTheme *icon_theme);
static void blow_themes (GtkIconTheme *icon_themes);
static void icon_data_free (GtkIconData *icon_data);
static void load_icon_data (IconThemeDir *dir,
const char *path,
const char *name);
static IconSuffix theme_dir_get_icon_suffix (IconThemeDir *dir,
const gchar *icon_name,
gboolean *has_icon_file);
static GtkIconInfo *icon_info_new (void);
static GtkIconInfo *icon_info_new_builtin (BuiltinIcon *icon);
static IconSuffix suffix_from_name (const char *name);
static BuiltinIcon *find_builtin_icon (const gchar *icon_name,
gint size,
gint *min_difference_p,
gboolean *has_larger_p);
static GObjectClass *parent_class = NULL;
static guint signal_changed = 0;
static GHashTable *icon_theme_builtin_icons;
GType
gtk_icon_theme_get_type (void)
{
static GType type = 0;
if (type == 0)
{
static const GTypeInfo info =
{
sizeof (GtkIconThemeClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_icon_theme_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkIconTheme),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_icon_theme_init,
};
type = g_type_register_static (G_TYPE_OBJECT, "GtkIconTheme", &info, 0);
}
return type;
}
/**
* gtk_icon_theme_new:
*
* Creates a new icon theme object. Icon theme objects are used
* to lookup up an icon by name in a particular icon theme.
* Usually, you'll want to use gtk_icon_theme_get_default()
* or gtk_icon_theme_get_for_screen() rather than creating
* a new icon theme object for scratch.
*
* Return value: the newly created #GtkIconTheme object.
*
* Since: 2.4
**/
GtkIconTheme *
gtk_icon_theme_new (void)
{
return g_object_new (GTK_TYPE_ICON_THEME, NULL);
}
/**
* gtk_icon_theme_get_default:
*
* Gets the icon theme for the default screen. See
* gtk_icon_theme_get_for_screen().
*
* Return value: A unique #GtkIconTheme associated with
* the default screen. This icon theme is associated with
* the screen and can be used as long as the screen
* is open. Do not ref or unref it.
*
* Since: 2.4
**/
GtkIconTheme *
gtk_icon_theme_get_default (void)
{
return gtk_icon_theme_get_for_screen (gdk_screen_get_default ());
}
/**
* gtk_icon_theme_get_for_screen:
* @screen: a #GdkScreen
*
* Gets the icon theme object associated with @screen; if this
* function has not previously been called for the given
* screen, a new icon theme object will be created and
* associated with the screen. Icon theme objects are
* fairly expensive to create, so using this function
* is usually a better choice than calling than gtk_icon_theme_new()
* and setting the screen yourself; by using this function
* a single icon theme object will be shared between users.
*
* Return value: A unique #GtkIconTheme associated with
* the given screen. This icon theme is associated with
* the screen and can be used as long as the screen
* is open. Do not ref or unref it.
*
* Since: 2.4
**/
GtkIconTheme *
gtk_icon_theme_get_for_screen (GdkScreen *screen)
{
GtkIconTheme *icon_theme;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
g_return_val_if_fail (!screen->closed, NULL);
icon_theme = g_object_get_data (G_OBJECT (screen), "gtk-icon-theme");
if (!icon_theme)
{
GtkIconThemePrivate *priv;
icon_theme = gtk_icon_theme_new ();
gtk_icon_theme_set_screen (icon_theme, screen);
priv = icon_theme->priv;
priv->is_screen_singleton = TRUE;
g_object_set_data (G_OBJECT (screen), "gtk-icon-theme", icon_theme);
}
return icon_theme;
}
static void
gtk_icon_theme_class_init (GtkIconThemeClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gtk_icon_theme_finalize;
/**
* GtkIconTheme::changed
* @icon_theme: the icon theme
*
* Emitted when the current icon theme is switched or GTK+ detects
* that a change has occurred in the contents of the current
* icon theme.
**/
signal_changed = g_signal_new ("changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkIconThemeClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_type_class_add_private (klass, sizeof (GtkIconThemePrivate));
}
/* Callback when the display that the icon theme is attached to
* is closed; unset the screen, and if it's the unique theme
* for the screen, drop the reference
*/
static void
display_closed (GdkDisplay *display,
gboolean is_error,
GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
GdkScreen *screen = priv->screen;
gboolean was_screen_singleton = priv->is_screen_singleton;
if (was_screen_singleton)
{
g_object_set_data (G_OBJECT (screen), "gtk-icon-theme", NULL);
priv->is_screen_singleton = FALSE;
}
gtk_icon_theme_set_screen (icon_theme, NULL);
if (was_screen_singleton)
{
g_object_unref (icon_theme);
}
}
static void
update_current_theme (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
if (!priv->custom_theme)
{
gchar *theme = NULL;
if (priv->screen)
{
GtkSettings *settings = gtk_settings_get_for_screen (priv->screen);
g_object_get (settings, "gtk-icon-theme-name", &theme, NULL);
}
if (!theme)
theme = g_strdup (DEFAULT_THEME_NAME);
if (strcmp (priv->current_theme, theme) != 0)
{
g_free (priv->current_theme);
priv->current_theme = theme;
do_theme_change (icon_theme);
}
else
g_free (theme);
}
}
/* Callback when the icon theme GtkSetting changes
*/
static void
theme_changed (GtkSettings *settings,
GParamSpec *pspec,
GtkIconTheme *icon_theme)
{
update_current_theme (icon_theme);
}
static void
unset_screen (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
GtkSettings *settings;
GdkDisplay *display;
if (priv->screen)
{
settings = gtk_settings_get_for_screen (priv->screen);
display = gdk_screen_get_display (priv->screen);
g_signal_handlers_disconnect_by_func (display,
(gpointer) display_closed,
icon_theme);
g_signal_handlers_disconnect_by_func (settings,
(gpointer) theme_changed,
icon_theme);
priv->screen = NULL;
}
}
/**
* gtk_icon_theme_set_screen:
* @icon_theme: a #GtkIconTheme
* @screen: a #GdkScreen
*
* Sets the screen for an icon theme; the screen is used
* to track the user's currently configured icon theme,
* which might be different for different screens.
*
* Since: 2.4
**/
void
gtk_icon_theme_set_screen (GtkIconTheme *icon_theme,
GdkScreen *screen)
{
GtkIconThemePrivate *priv;
GtkSettings *settings;
GdkDisplay *display;
g_return_if_fail (GTK_ICON_THEME (icon_theme));
g_return_if_fail (screen == NULL || GDK_IS_SCREEN (screen));
priv = icon_theme->priv;
unset_screen (icon_theme);
if (screen)
{
display = gdk_screen_get_display (screen);
settings = gtk_settings_get_for_screen (screen);
priv->screen = screen;
g_signal_connect (display, "closed",
G_CALLBACK (display_closed), icon_theme);
g_signal_connect (settings, "notify::gtk-icon-theme-name",
G_CALLBACK (theme_changed), icon_theme);
}
update_current_theme (icon_theme);
}
/* Checks whether a loader for SVG files has been registered
* with GdkPixbuf.
*/
static gboolean
pixbuf_supports_svg (void)
{
GSList *formats = gdk_pixbuf_get_formats ();
GSList *tmp_list;
static gboolean found_svg = FALSE;
static gboolean value_known = FALSE;
if (value_known)
return found_svg;
for (tmp_list = formats; tmp_list && !found_svg; tmp_list = tmp_list->next)
{
gchar **mime_types = gdk_pixbuf_format_get_mime_types (tmp_list->data);
gchar **mime_type;
for (mime_type = mime_types; *mime_type && !found_svg; mime_type++)
{
if (strcmp (*mime_type, "image/svg") == 0)
found_svg = TRUE;
}
g_strfreev (mime_types);
}
g_slist_free (formats);
value_known = TRUE;
return found_svg;
}
static void
gtk_icon_theme_init (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
const gchar * const *xdg_data_dirs;
int i, j;
priv = g_type_instance_get_private ((GTypeInstance *)icon_theme,
GTK_TYPE_ICON_THEME);
icon_theme->priv = priv;
priv->custom_theme = FALSE;
priv->current_theme = g_strdup (DEFAULT_THEME_NAME);
xdg_data_dirs = g_get_system_data_dirs ();
for (i = 0; xdg_data_dirs[i]; i++) ;
priv->search_path_len = 2 * i + 2;
priv->search_path = g_new (char *, priv->search_path_len);
i = 0;
priv->search_path[i++] = g_build_filename (g_get_home_dir (), ".icons", NULL);
priv->search_path[i++] = g_build_filename (g_get_user_data_dir (), "icons", NULL);
for (j = 0; xdg_data_dirs[j]; j++)
priv->search_path[i++] = g_build_filename (xdg_data_dirs[j], "icons", NULL);
for (j = 0; xdg_data_dirs[j]; j++)
priv->search_path[i++] = g_build_filename (xdg_data_dirs[j], "pixmaps", NULL);
priv->themes_valid = FALSE;
priv->themes = NULL;
priv->unthemed_icons = NULL;
priv->pixbuf_supports_svg = pixbuf_supports_svg ();
}
static void
free_dir_mtime (IconThemeDirMtime *dir_mtime)
{
if (dir_mtime->cache)
_gtk_icon_cache_unref (dir_mtime->cache);
g_free (dir_mtime->dir);
g_free (dir_mtime);
}
static gboolean
reset_styles_idle (gpointer user_data)
{
GtkIconTheme *icon_theme;
GtkIconThemePrivate *priv;
GDK_THREADS_ENTER ();
icon_theme = GTK_ICON_THEME (user_data);
priv = icon_theme->priv;
if (priv->screen && priv->is_screen_singleton)
{
GtkSettings *settings = gtk_settings_get_for_screen (priv->screen);
gtk_rc_reset_styles (settings);
}
priv->reset_styles_idle = 0;
GDK_THREADS_LEAVE ();
return FALSE;
}
static void
do_theme_change (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
GTK_NOTE (ICONTHEME,
g_print ("change to icon theme \"%s\"\n", priv->current_theme));
blow_themes (icon_theme);
g_signal_emit (icon_theme, signal_changed, 0);
if (!priv->reset_styles_idle)
priv->reset_styles_idle =
g_idle_add (reset_styles_idle, icon_theme);
}
static void
blow_themes (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
if (priv->themes_valid)
{
g_hash_table_destroy (priv->all_icons);
g_list_foreach (priv->themes, (GFunc)theme_destroy, NULL);
g_list_free (priv->themes);
g_list_foreach (priv->dir_mtimes, (GFunc)free_dir_mtime, NULL);
g_list_free (priv->dir_mtimes);
g_hash_table_destroy (priv->unthemed_icons);
}
priv->themes = NULL;
priv->unthemed_icons = NULL;
priv->dir_mtimes = NULL;
priv->all_icons = NULL;
priv->themes_valid = FALSE;
}
static void
gtk_icon_theme_finalize (GObject *object)
{
GtkIconTheme *icon_theme;
GtkIconThemePrivate *priv;
int i;
icon_theme = GTK_ICON_THEME (object);
priv = icon_theme->priv;
if (priv->reset_styles_idle)
{
g_source_remove (priv->reset_styles_idle);
priv->reset_styles_idle = 0;
}
unset_screen (icon_theme);
g_free (priv->current_theme);
priv->current_theme = NULL;
for (i=0; i < priv->search_path_len; i++)
g_free (priv->search_path[i]);
g_free (priv->search_path);
priv->search_path = NULL;
blow_themes (icon_theme);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gtk_icon_theme_set_search_path:
* @icon_theme: a #GtkIconTheme
* @path: array of directories that are searched for icon themes
* @n_elements: number of elements in @path.
*
* Sets the search path for the icon theme object. When looking
* for an icon theme, GTK+ will search for a subdirectory of
* one or more of the directories in @path with the same name
* as the icon theme. (Themes from multiple of the path elements
* are combined to allow themes to be extended by adding icons
* in the user's home directory.)
*
* In addition if an icon found isn't found either in the current
* icon theme or the default icon theme, and an image file with
* the right name is found directly in one of the elements of
* @path, then that image will be used for the icon name.
* (This is legacy feature, and new icons should be put
* into the default icon theme, which is called DEFAULT_THEME_NAME,
* rather than directly on the icon path.)
*
* Since: 2.4
**/
void
gtk_icon_theme_set_search_path (GtkIconTheme *icon_theme,
const gchar *path[],
gint n_elements)
{
GtkIconThemePrivate *priv;
gint i;
g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
priv = icon_theme->priv;
for (i = 0; i < priv->search_path_len; i++)
g_free (priv->search_path[i]);
g_free (priv->search_path);
priv->search_path = g_new (gchar *, n_elements);
priv->search_path_len = n_elements;
for (i = 0; i < priv->search_path_len; i++)
priv->search_path[i] = g_strdup (path[i]);
do_theme_change (icon_theme);
}
/**
* gtk_icon_theme_get_search_path:
* @icon_theme: a #GtkIconTheme
* @path: location to store a list of icon theme path directories or %NULL
* The stored value should be freed with g_strfreev().
* @n_elements: location to store number of elements
* in @path, or %NULL
*
* Gets the current search path. See gtk_icon_theme_set_search_path().
*
* Since: 2.4
**/
void
gtk_icon_theme_get_search_path (GtkIconTheme *icon_theme,
gchar **path[],
gint *n_elements)
{
GtkIconThemePrivate *priv;
int i;
g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
priv = icon_theme->priv;
if (n_elements)
*n_elements = priv->search_path_len;
if (path)
{
*path = g_new (gchar *, priv->search_path_len + 1);
for (i = 0; i < priv->search_path_len; i++)
(*path)[i] = g_strdup (priv->search_path[i]);
(*path)[i] = NULL;
}
}
/**
* gtk_icon_theme_append_search_path:
* @icon_theme: a #GtkIconTheme
* @path: directory name to append to the icon path
*
* Appends a directory to the search path.
* See gtk_icon_theme_set_search_path().
*
* Since: 2.4
**/
void
gtk_icon_theme_append_search_path (GtkIconTheme *icon_theme,
const gchar *path)
{
GtkIconThemePrivate *priv;
g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
g_return_if_fail (path != NULL);
priv = icon_theme->priv;
priv->search_path_len++;
priv->search_path = g_renew (gchar *, priv->search_path, priv->search_path_len);
priv->search_path[priv->search_path_len-1] = g_strdup (path);
do_theme_change (icon_theme);
}
/**
* gtk_icon_theme_prepend_search_path:
* @icon_theme: a #GtkIconTheme
* @path: directory name to prepend to the icon path
*
* Prepends a directory to the search path.
* See gtk_icon_theme_set_search_path().
*
* Since: 2.4
**/
void
gtk_icon_theme_prepend_search_path (GtkIconTheme *icon_theme,
const gchar *path)
{
GtkIconThemePrivate *priv;
int i;
g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
g_return_if_fail (path != NULL);
priv = icon_theme->priv;
priv->search_path_len++;
priv->search_path = g_renew (gchar *, priv->search_path, priv->search_path_len);
for (i = priv->search_path_len - 1; i > 0; i--)
priv->search_path[i] = priv->search_path[i - 1];
priv->search_path[0] = g_strdup (path);
do_theme_change (icon_theme);
}
/**
* gtk_icon_theme_set_custom_theme:
* @icon_theme: a #GtkIconTheme
* @theme_name: name of icon theme to use instead of configured theme,
* or %NULL to unset a previously set custom theme
*
* Sets the name of the icon theme that the #GtkIconTheme object uses
* overriding system configuration. This function cannot be called
* on the icon theme objects returned from gtk_icon_theme_get_default()
* and gtk_icon_theme_get_for_screen().
*
* Since: 2.4
**/
void
gtk_icon_theme_set_custom_theme (GtkIconTheme *icon_theme,
const gchar *theme_name)
{
GtkIconThemePrivate *priv;
g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
priv = icon_theme->priv;
g_return_if_fail (!priv->is_screen_singleton);
if (theme_name != NULL)
{
priv->custom_theme = TRUE;
if (strcmp (theme_name, priv->current_theme) != 0)
{
g_free (priv->current_theme);
priv->current_theme = g_strdup (theme_name);
do_theme_change (icon_theme);
}
}
else
{
priv->custom_theme = FALSE;
update_current_theme (icon_theme);
}
}
static void
insert_theme (GtkIconTheme *icon_theme, const char *theme_name)
{
int i;
GList *l;
char **dirs;
char **themes;
GtkIconThemePrivate *priv;
IconTheme *theme;
char *path;
GKeyFile *theme_file;
GError *error = NULL;
IconThemeDirMtime *dir_mtime;
struct stat stat_buf;
priv = icon_theme->priv;
for (l = priv->themes; l != NULL; l = l->next)
{
theme = l->data;
if (strcmp (theme->name, theme_name) == 0)
return;
}
for (i = 0; i < priv->search_path_len; i++)
{
path = g_build_filename (priv->search_path[i],
theme_name,
NULL);
dir_mtime = g_new (IconThemeDirMtime, 1);
dir_mtime->cache = NULL;
dir_mtime->dir = path;
if (g_stat (path, &stat_buf) == 0 && S_ISDIR (stat_buf.st_mode))
dir_mtime->mtime = stat_buf.st_mtime;
else
dir_mtime->mtime = 0;
priv->dir_mtimes = g_list_prepend (priv->dir_mtimes, dir_mtime);
}
priv->dir_mtimes = g_list_reverse (priv->dir_mtimes);
theme_file = NULL;
for (i = 0; i < priv->search_path_len && !theme_file; i++)
{
path = g_build_filename (priv->search_path[i],
theme_name,
"index.theme",
NULL);
if (g_file_test (path, G_FILE_TEST_IS_REGULAR))
{
theme_file = g_key_file_new ();
g_key_file_set_list_separator (theme_file, ',');
g_key_file_load_from_file (theme_file, path, 0, &error);
if (error)
{
g_key_file_free (theme_file);
theme_file = NULL;
g_error_free (error);
error = NULL;
}
}
g_free (path);
}
if (theme_file == NULL)
return;
theme = g_new (IconTheme, 1);
theme->display_name =
g_key_file_get_locale_string (theme_file, "Icon Theme", "Name", NULL, NULL);
if (!theme->display_name)
{
g_warning ("Theme file for %s has no name\n", theme_name);
g_free (theme);
g_key_file_free (theme_file);
return;
}
dirs = g_key_file_get_string_list (theme_file, "Icon Theme", "Directories", NULL, NULL);
if (!dirs)
{
g_warning ("Theme file for %s has no directories\n", theme_name);
g_free (theme->display_name);
g_free (theme);
g_key_file_free (theme_file);
return;
}
theme->name = g_strdup (theme_name);
theme->comment =
g_key_file_get_locale_string (theme_file,
"Icon Theme", "Comment",
NULL, NULL);
theme->example =
g_key_file_get_string (theme_file,
"Icon Theme", "Example",
NULL);
theme->dirs = NULL;
for (i = 0; dirs[i] != NULL; i++)
theme_subdir_load (icon_theme, theme, theme_file, dirs[i]);
g_strfreev (dirs);
theme->dirs = g_list_reverse (theme->dirs);
/* Prepend the finished theme */
priv->themes = g_list_prepend (priv->themes, theme);
themes = g_key_file_get_string_list (theme_file,
"Icon Theme",
"Inherits",
NULL,
NULL);
if (themes)
{
for (i = 0; themes[i] != NULL; i++)
insert_theme (icon_theme, themes[i]);
g_strfreev (themes);
}
g_key_file_free (theme_file);
}
static void
free_unthemed_icon (UnthemedIcon *unthemed_icon)
{
if (unthemed_icon->svg_filename)
g_free (unthemed_icon->svg_filename);
if (unthemed_icon->no_svg_filename)
g_free (unthemed_icon->no_svg_filename);
g_free (unthemed_icon);
}
static void
load_themes (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
GDir *gdir;
int base;
char *dir, *base_name, *dot;
const char *file;
char *abs_file;
UnthemedIcon *unthemed_icon;
IconSuffix old_suffix, new_suffix;
GTimeVal tv;
IconThemeDirMtime *dir_mtime;
struct stat stat_buf;
priv = icon_theme->priv;
priv->all_icons = g_hash_table_new (g_str_hash, g_str_equal);
insert_theme (icon_theme, priv->current_theme);
/* Always look in the "default" icon theme */
insert_theme (icon_theme, DEFAULT_THEME_NAME);
priv->themes = g_list_reverse (priv->themes);
priv->unthemed_icons = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)free_unthemed_icon);
for (base = 0; base < icon_theme->priv->search_path_len; base++)
{
dir = icon_theme->priv->search_path[base];
dir_mtime = g_new (IconThemeDirMtime, 1);
dir_mtime->cache = _gtk_icon_cache_new_for_path (dir);
dir_mtime->dir = g_strdup (dir);
if (g_stat (dir, &stat_buf) == 0 && S_ISDIR (stat_buf.st_mode))
dir_mtime->mtime = stat_buf.st_mtime;
else
dir_mtime->mtime = 0;
priv->dir_mtimes = g_list_append (priv->dir_mtimes, dir_mtime);
if (dir_mtime->cache != NULL)
continue;
gdir = g_dir_open (dir, 0, NULL);
if (gdir == NULL)
continue;
while ((file = g_dir_read_name (gdir)))
{
new_suffix = suffix_from_name (file);
if (new_suffix != ICON_SUFFIX_NONE)
{
abs_file = g_build_filename (dir, file, NULL);
base_name = g_strdup (file);
dot = strrchr (base_name, '.');
if (dot)
*dot = 0;
if ((unthemed_icon = g_hash_table_lookup (priv->unthemed_icons,
base_name)))
{
if (new_suffix == ICON_SUFFIX_SVG)
{
if (unthemed_icon->svg_filename)
g_free (abs_file);
else
unthemed_icon->svg_filename = abs_file;
}
else
{
if (unthemed_icon->no_svg_filename)
{
old_suffix = suffix_from_name (unthemed_icon->no_svg_filename);
if (new_suffix > old_suffix)
{
g_free (unthemed_icon->no_svg_filename);
unthemed_icon->no_svg_filename = abs_file;
}
else
g_free (abs_file);
}
else
unthemed_icon->no_svg_filename = abs_file;
}
g_free (base_name);
}
else
{
unthemed_icon = g_new0 (UnthemedIcon, 1);
if (new_suffix == ICON_SUFFIX_SVG)
unthemed_icon->svg_filename = abs_file;
else
unthemed_icon->no_svg_filename = abs_file;
g_hash_table_insert (priv->unthemed_icons,
base_name,
unthemed_icon);
g_hash_table_insert (priv->all_icons,
base_name, NULL);
}
}
}
g_dir_close (gdir);
}
priv->themes_valid = TRUE;
g_get_current_time(&tv);
priv->last_stat_time = tv.tv_sec;
}
static void
ensure_valid_themes (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
GTimeVal tv;
if (priv->themes_valid)
{
g_get_current_time (&tv);
if (ABS (tv.tv_sec - priv->last_stat_time) > 5)
gtk_icon_theme_rescan_if_needed (icon_theme);
}
if (!priv->themes_valid)
load_themes (icon_theme);
}
/**
* gtk_icon_theme_lookup_icon:
* @icon_theme: a #GtkIconTheme
* @icon_name: the name of the icon to lookup
* @size: desired icon size
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up a named icon and returns a structure containing
* information such as the filename of the icon. The icon
* can then be rendered into a pixbuf using
* gtk_icon_info_load_icon(). (gtk_icon_theme_load_icon()
* combines these two steps if all you need is the pixbuf.)
*
* Return value: a #GtkIconInfo structure containing information
* about the icon, or %NULL if the icon wasn't found. Free with
* gtk_icon_info_free()
*
* Since: 2.4
**/
GtkIconInfo *
gtk_icon_theme_lookup_icon (GtkIconTheme *icon_theme,
const gchar *icon_name,
gint size,
GtkIconLookupFlags flags)
{
GtkIconThemePrivate *priv;
GList *l;
GtkIconInfo *icon_info = NULL;
UnthemedIcon *unthemed_icon;
gboolean allow_svg;
gboolean use_builtin;
gboolean found_default;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
g_return_val_if_fail (icon_name != NULL, NULL);
g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
(flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
priv = icon_theme->priv;
GTK_NOTE (ICONTHEME,
g_print ("gtk_icon_theme_lookup_icon %s\n", icon_name));
if (flags & GTK_ICON_LOOKUP_NO_SVG)
allow_svg = FALSE;
else if (flags & GTK_ICON_LOOKUP_FORCE_SVG)
allow_svg = TRUE;
else
allow_svg = priv->pixbuf_supports_svg;
use_builtin = (flags & GTK_ICON_LOOKUP_USE_BUILTIN);
ensure_valid_themes (icon_theme);
found_default = FALSE;
l = priv->themes;
while (l != NULL)
{
IconTheme *theme = l->data;
if (strcmp (theme->name, DEFAULT_THEME_NAME) == 0)
found_default = TRUE;
icon_info = theme_lookup_icon (theme, icon_name, size, allow_svg, use_builtin);
if (icon_info)
goto out;
l = l->next;
}
if (!found_default)
{
BuiltinIcon *builtin = find_builtin_icon (icon_name, size, NULL, NULL);
if (builtin)
{
icon_info = icon_info_new_builtin (builtin);
goto out;
}
}
unthemed_icon = g_hash_table_lookup (priv->unthemed_icons, icon_name);
if (unthemed_icon)
{
icon_info = icon_info_new ();
/* A SVG icon, when allowed, beats out a XPM icon, but not
* a PNG icon
*/
if (allow_svg &&
unthemed_icon->svg_filename &&
(!unthemed_icon->no_svg_filename ||
suffix_from_name (unthemed_icon->no_svg_filename) != ICON_SUFFIX_PNG))
icon_info->filename = g_strdup (unthemed_icon->svg_filename);
else if (unthemed_icon->no_svg_filename)
icon_info->filename = g_strdup (unthemed_icon->no_svg_filename);
#ifdef G_OS_WIN32
icon_info->cp_filename = g_locale_from_utf8 (icon_info->filename,
-1, NULL, NULL, NULL);
#endif
icon_info->dir_type = ICON_THEME_DIR_UNTHEMED;
}
out:
if (icon_info)
icon_info->desired_size = size;
else
{
static gboolean check_for_default_theme = TRUE;
char *default_theme_path;
gboolean found = FALSE;
unsigned i;
if (check_for_default_theme)
{
check_for_default_theme = FALSE;
for (i = 0; !found && i < priv->search_path_len; i++)
{
default_theme_path = g_build_filename (priv->search_path[i],
DEFAULT_THEME_NAME,
"index.theme",
NULL);
found = g_file_test (default_theme_path, G_FILE_TEST_IS_REGULAR);
g_free (default_theme_path);
}
if (!found)
{
g_warning (_("Could not find the icon '%s'. The '%s' theme\n"
"was not found either, perhaps you need to install it.\n"
"You can get a copy from:\n"
"\t%s"),
icon_name, DEFAULT_THEME_NAME, "http://icon-theme.freedesktop.org/releases");
}
}
}
return icon_info;
}
/* Error quark */
GQuark
gtk_icon_theme_error_quark (void)
{
static GQuark q = 0;
if (q == 0)
q = g_quark_from_static_string ("gtk-icon-theme-error-quark");
return q;
}
/**
* gtk_icon_theme_load_icon:
* @icon_theme: a #GtkIconTheme
* @icon_name: the name of the icon to lookup
* @size: the desired icon size. The resulting icon may not be
* exactly this size; see gtk_icon_info_load_icon().
* @flags: flags modifying the behavior of the icon lookup
* @error: Location to store error information on failure, or %NULL.
*
* Looks up an icon in an icon theme, scales it to the given size
* and renders it into a pixbuf. This is a convenience function;
* if more details about the icon are needed, use
* gtk_icon_theme_lookup_icon() followed by gtk_icon_info_load_icon().
*
* Note that you probably want to listen for icon theme changes and
* update the icon. This is usually done by connecting to the
* GtkWidget::style-set signal. If for some reason you do not want to
* update the icon when the icon theme changes, you should consider
* using gdk_pixbuf_copy() to make a private copy of the pixbuf
* returned by this function. Otherwise GTK+ may need to keep the old
* icon theme loaded, which would be a waste of memory.
*
* Return value: the rendered icon; this may be a newly created icon
* or a new reference to an internal icon, so you must not modify
* the icon. Use g_object_unref() to release your reference to the
* icon. %NULL if the icon isn't found.
*
* Since: 2.4
**/
GdkPixbuf *
gtk_icon_theme_load_icon (GtkIconTheme *icon_theme,
const gchar *icon_name,
gint size,
GtkIconLookupFlags flags,
GError **error)
{
GtkIconInfo *icon_info;
GdkPixbuf *pixbuf = NULL;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
g_return_val_if_fail (icon_name != NULL, NULL);
g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
(flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
icon_info = gtk_icon_theme_lookup_icon (icon_theme, icon_name, size,
flags | GTK_ICON_LOOKUP_USE_BUILTIN);
if (!icon_info)
{
g_set_error (error, GTK_ICON_THEME_ERROR, GTK_ICON_THEME_NOT_FOUND,
_("Icon '%s' not present in theme"), icon_name);
return NULL;
}
pixbuf = gtk_icon_info_load_icon (icon_info, error);
gtk_icon_info_free (icon_info);
return pixbuf;
}
/**
* gtk_icon_theme_has_icon:
* @icon_theme: a #GtkIconTheme
* @icon_name: the name of an icon
*
* Checks whether an icon theme includes an icon
* for a particular name.
*
* Return value: %TRUE if @icon_theme includes an
* icon for @icon_name.
*
* Since: 2.4
**/
gboolean
gtk_icon_theme_has_icon (GtkIconTheme *icon_theme,
const char *icon_name)
{
GtkIconThemePrivate *priv;
GList *l;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), FALSE);
priv = icon_theme->priv;
ensure_valid_themes (icon_theme);
for (l = priv->dir_mtimes; l; l = l->next)
{
IconThemeDirMtime *dir_mtime = l->data;
GtkIconCache *cache = dir_mtime->cache;
if (cache && _gtk_icon_cache_has_icon (cache, icon_name))
return TRUE;
}
if (g_hash_table_lookup_extended (priv->all_icons,
icon_name, NULL, NULL))
return TRUE;
if (icon_theme_builtin_icons &&
g_hash_table_lookup_extended (icon_theme_builtin_icons,
icon_name, NULL, NULL))
return TRUE;
return FALSE;
}
static void
add_size (gpointer key,
gpointer value,
gpointer user_data)
{
gint **res_p = user_data;
**res_p = GPOINTER_TO_INT (key);
(*res_p)++;
}
/**
* gtk_icon_theme_get_icon_sizes:
* @icon_theme: a #GtkIconTheme
* @icon_name: the name of an icon
*
* Returns an array of integers describing the sizes at which
* the icon is available without scaling. A size of -1 means
* that the icon is available in a scalable format. The array
* is zero-terminated.
*
* Return value: An newly allocated array describing the sizes at
* which the icon is available. The array should be freed with g_free()
* when it is no longer needed.
*
* Since: 2.6
**/
gint *
gtk_icon_theme_get_icon_sizes (GtkIconTheme *icon_theme,
const char *icon_name)
{
GList *l, *d;
GHashTable *sizes;
gint *result, *r;
guint suffix;
GtkIconThemePrivate *priv;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
priv = icon_theme->priv;
ensure_valid_themes (icon_theme);
sizes = g_hash_table_new (g_direct_hash, g_direct_equal);
for (l = priv->themes; l; l = l->next)
{
IconTheme *theme = l->data;
for (d = theme->dirs; d; d = d->next)
{
IconThemeDir *dir = d->data;
suffix = theme_dir_get_icon_suffix (dir, icon_name, NULL);
if (suffix != ICON_SUFFIX_NONE)
{
if (suffix == ICON_SUFFIX_SVG)
g_hash_table_insert (sizes, GINT_TO_POINTER (-1), NULL);
else
g_hash_table_insert (sizes, GINT_TO_POINTER (dir->size), NULL);
}
}
}
r = result = g_new0 (gint, g_hash_table_size (sizes) + 1);
g_hash_table_foreach (sizes, add_size, &r);
g_hash_table_destroy (sizes);
return result;
}
static void
add_key_to_hash (gpointer key,
gpointer value,
gpointer user_data)
{
GHashTable *hash = user_data;
g_hash_table_insert (hash, key, NULL);
}
static void
add_key_to_list (gpointer key,
gpointer value,
gpointer user_data)
{
GList **list = user_data;
*list = g_list_prepend (*list, g_strdup (key));
}
/**
* gtk_icon_theme_list_icons:
* @icon_theme: a #GtkIconTheme
* @context: a string identifying a particular type of icon,
* or %NULL to list all icons.
*
* Lists the icons in the current icon theme. Only a subset
* of the icons can be listed by providing a context string.
* The set of values for the context string is system dependent,
* but will typically include such values as 'apps' and
* 'mimetypes'.
*
* Return value: a #GList list holding the names of all the
* icons in the theme. You must first free each element
* in the list with g_free(), then free the list itself
* with g_list_free().
*
* Since: 2.4
**/
GList *
gtk_icon_theme_list_icons (GtkIconTheme *icon_theme,
const char *context)
{
GtkIconThemePrivate *priv;
GHashTable *icons;
GList *list, *l;
GQuark context_quark;
priv = icon_theme->priv;
ensure_valid_themes (icon_theme);
if (context)
{
context_quark = g_quark_try_string (context);
if (!context_quark)
return NULL;
}
else
context_quark = 0;
icons = g_hash_table_new (g_str_hash, g_str_equal);
l = priv->themes;
while (l != NULL)
{
theme_list_icons (l->data, icons, context_quark);
l = l->next;
}
if (context_quark == 0)
g_hash_table_foreach (priv->unthemed_icons,
add_key_to_hash,
icons);
list = NULL;
g_hash_table_foreach (icons,
add_key_to_list,
&list);
g_hash_table_destroy (icons);
return list;
}
/**
* gtk_icon_theme_get_example_icon_name:
* @icon_theme: a #GtkIconTheme
*
* Gets the name of an icon that is representative of the
* current theme (for instance, to use when presenting
* a list of themes to the user.)
*
* Return value: the name of an example icon or %NULL.
* Free with g_free().
*
* Since: 2.4
**/
char *
gtk_icon_theme_get_example_icon_name (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
GList *l;
IconTheme *theme;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
priv = icon_theme->priv;
ensure_valid_themes (icon_theme);
l = priv->themes;
while (l != NULL)
{
theme = l->data;
if (theme->example)
return g_strdup (theme->example);
l = l->next;
}
return NULL;
}
/**
* gtk_icon_theme_rescan_if_needed:
* @icon_theme: a #GtkIconTheme
*
* Checks to see if the icon theme has changed; if it has, any
* currently cached information is discarded and will be reloaded
* next time @icon_theme is accessed.
*
* Return value: %TRUE if the icon theme has changed and needed
* to be reloaded.
*
* Since: 2.4
**/
gboolean
gtk_icon_theme_rescan_if_needed (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
IconThemeDirMtime *dir_mtime;
GList *d;
int stat_res;
struct stat stat_buf;
GTimeVal tv;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), FALSE);
priv = icon_theme->priv;
for (d = priv->dir_mtimes; d != NULL; d = d->next)
{
dir_mtime = d->data;
stat_res = g_stat (dir_mtime->dir, &stat_buf);
/* dir mtime didn't change */
if (stat_res == 0 &&
S_ISDIR (stat_buf.st_mode) &&
dir_mtime->mtime == stat_buf.st_mtime)
continue;
/* didn't exist before, and still doesn't */
if (dir_mtime->mtime == 0 &&
(stat_res != 0 || !S_ISDIR (stat_buf.st_mode)))
continue;
do_theme_change (icon_theme);
return TRUE;
}
g_get_current_time (&tv);
priv->last_stat_time = tv.tv_sec;
return FALSE;
}
static void
theme_destroy (IconTheme *theme)
{
g_free (theme->display_name);
g_free (theme->comment);
g_free (theme->name);
g_free (theme->example);
g_list_foreach (theme->dirs, (GFunc)theme_dir_destroy, NULL);
g_list_free (theme->dirs);
g_free (theme);
}
static void
theme_dir_destroy (IconThemeDir *dir)
{
if (dir->cache)
_gtk_icon_cache_unref (dir->cache);
else
g_hash_table_destroy (dir->icons);
if (dir->icon_data)
g_hash_table_destroy (dir->icon_data);
g_free (dir->dir);
g_free (dir->subdir);
g_free (dir);
}
static int
theme_dir_size_difference (IconThemeDir *dir, int size, gboolean *smaller)
{
int min, max;
switch (dir->type)
{
case ICON_THEME_DIR_FIXED:
*smaller = size < dir->size;
return abs (size - dir->size);
break;
case ICON_THEME_DIR_SCALABLE:
*smaller = size < dir->min_size;
if (size < dir->min_size)
return dir->min_size - size;
if (size > dir->max_size)
return size - dir->max_size;
return 0;
break;
case ICON_THEME_DIR_THRESHOLD:
min = dir->size - dir->threshold;
max = dir->size + dir->threshold;
*smaller = size < min;
if (size < min)
return min - size;
if (size > max)
return size - max;
return 0;
break;
case ICON_THEME_DIR_UNTHEMED:
g_assert_not_reached ();
break;
}
g_assert_not_reached ();
return 1000;
}
static const char *
string_from_suffix (IconSuffix suffix)
{
switch (suffix)
{
case ICON_SUFFIX_XPM:
return ".xpm";
case ICON_SUFFIX_SVG:
return ".svg";
case ICON_SUFFIX_PNG:
return ".png";
default:
g_assert_not_reached();
}
return NULL;
}
static IconSuffix
suffix_from_name (const char *name)
{
IconSuffix retval;
if (g_str_has_suffix (name, ".png"))
retval = ICON_SUFFIX_PNG;
else if (g_str_has_suffix (name, ".svg"))
retval = ICON_SUFFIX_SVG;
else if (g_str_has_suffix (name, ".xpm"))
retval = ICON_SUFFIX_XPM;
else
retval = ICON_SUFFIX_NONE;
return retval;
}
static IconSuffix
best_suffix (IconSuffix suffix,
gboolean allow_svg)
{
if ((suffix & ICON_SUFFIX_PNG) != 0)
return ICON_SUFFIX_PNG;
else if (allow_svg && ((suffix & ICON_SUFFIX_SVG) != 0))
return ICON_SUFFIX_SVG;
else if ((suffix & ICON_SUFFIX_XPM) != 0)
return ICON_SUFFIX_XPM;
else
return ICON_SUFFIX_NONE;
}
static IconSuffix
theme_dir_get_icon_suffix (IconThemeDir *dir,
const gchar *icon_name,
gboolean *has_icon_file)
{
IconSuffix suffix;
if (dir->cache)
{
suffix = (IconSuffix)_gtk_icon_cache_get_icon_flags (dir->cache,
icon_name,
dir->subdir);
if (has_icon_file)
*has_icon_file = suffix & HAS_ICON_FILE;
suffix = suffix & ~HAS_ICON_FILE;
}
else
suffix = GPOINTER_TO_UINT (g_hash_table_lookup (dir->icons, icon_name));
GTK_NOTE (ICONTHEME,
g_print ("get_icon_suffix%s %d\n", dir->cache ? " (cached)" : "", suffix));
return suffix;
}
static GtkIconInfo *
theme_lookup_icon (IconTheme *theme,
const char *icon_name,
int size,
gboolean allow_svg,
gboolean use_builtin)
{
GList *l;
IconThemeDir *dir, *min_dir;
char *file;
int min_difference, difference;
BuiltinIcon *closest_builtin = NULL;
gboolean smaller, has_larger;
IconSuffix suffix;
min_difference = G_MAXINT;
min_dir = NULL;
has_larger = FALSE;
/* Builtin icons are logically part of the default theme and
* are searched before other subdirectories of the default theme.
*/
if (strcmp (theme->name, DEFAULT_THEME_NAME) == 0 && use_builtin)
{
closest_builtin = find_builtin_icon (icon_name, size,
&min_difference,
&has_larger);
if (min_difference == 0)
return icon_info_new_builtin (closest_builtin);
}
l = theme->dirs;
while (l != NULL)
{
dir = l->data;
GTK_NOTE (ICONTHEME,
g_print ("theme_lookup_icon dir %s\n", dir->dir));
suffix = theme_dir_get_icon_suffix (dir, icon_name, NULL);
if (best_suffix (suffix, allow_svg) != ICON_SUFFIX_NONE)
{
difference = theme_dir_size_difference (dir, size, &smaller);
if (difference == 0)
{
min_dir = dir;
break;
}
if (!has_larger)
{
if (difference < min_difference || smaller)
{
min_difference = difference;
min_dir = dir;
closest_builtin = NULL;
has_larger = smaller;
}
}
else
{
if (difference < min_difference && smaller)
{
min_difference = difference;
min_dir = dir;
closest_builtin = NULL;
}
}
}
l = l->next;
}
if (closest_builtin)
return icon_info_new_builtin (closest_builtin);
if (min_dir)
{
GtkIconInfo *icon_info = icon_info_new ();
gboolean has_icon_file;
suffix = theme_dir_get_icon_suffix (min_dir, icon_name, &has_icon_file);
suffix = best_suffix (suffix, allow_svg);
g_assert (suffix != ICON_SUFFIX_NONE);
file = g_strconcat (icon_name, string_from_suffix (suffix), NULL);
icon_info->filename = g_build_filename (min_dir->dir, file, NULL);
g_free (file);
#ifdef G_OS_WIN32
icon_info->cp_filename = g_locale_from_utf8 (icon_info->filename,
-1, NULL, NULL, NULL);
#endif
if (min_dir->icon_data != NULL)
icon_info->data = g_hash_table_lookup (min_dir->icon_data, icon_name);
if (icon_info->data == NULL && min_dir->cache != NULL)
{
icon_info->data = _gtk_icon_cache_get_icon_data (min_dir->cache, icon_name, min_dir->subdir);
if (icon_info->data)
{
if (min_dir->icon_data == NULL)
min_dir->icon_data = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)icon_data_free);
g_hash_table_replace (min_dir->icon_data, g_strdup (icon_name), icon_info->data);
}
}
if (icon_info->data == NULL && has_icon_file)
{
gchar *icon_file_name, *icon_file_path;
icon_file_name = g_strconcat (icon_name, ".icon", NULL);
icon_file_path = g_build_filename (min_dir->dir, icon_file_name, NULL);
if (g_file_test (icon_file_path, G_FILE_TEST_IS_REGULAR))
{
if (min_dir->icon_data == NULL)
min_dir->icon_data = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)icon_data_free);
load_icon_data (min_dir, icon_file_path, icon_file_name);
icon_info->data = g_hash_table_lookup (min_dir->icon_data, icon_name);
}
g_free (icon_file_name);
g_free (icon_file_path);
}
if (min_dir->cache)
{
icon_info->cache_pixbuf = _gtk_icon_cache_get_icon (min_dir->cache, icon_name,
min_dir->subdir);
}
icon_info->dir_type = min_dir->type;
icon_info->dir_size = min_dir->size;
icon_info->threshold = min_dir->threshold;
return icon_info;
}
return NULL;
}
static void
theme_list_icons (IconTheme *theme, GHashTable *icons,
GQuark context)
{
GList *l = theme->dirs;
IconThemeDir *dir;
while (l != NULL)
{
dir = l->data;
if (context == dir->context ||
context == 0)
{
if (dir->cache)
{
_gtk_icon_cache_add_icons (dir->cache,
dir->subdir,
icons);
}
else
{
g_hash_table_foreach (dir->icons,
add_key_to_hash,
icons);
}
}
l = l->next;
}
}
static void
load_icon_data (IconThemeDir *dir, const char *path, const char *name)
{
GKeyFile *icon_file;
char *base_name;
char **split;
gsize length;
char *dot;
char *str;
char *split_point;
int i;
gint *ivalues;
GError *error = NULL;
GtkIconData *data;
icon_file = g_key_file_new ();
g_key_file_set_list_separator (icon_file, ',');
g_key_file_load_from_file (icon_file, path, 0, &error);
if (error)
{
g_error_free (error);
return;
}
else
{
base_name = g_strdup (name);
dot = strrchr (base_name, '.');
*dot = 0;
data = g_new0 (GtkIconData, 1);
g_hash_table_replace (dir->icon_data, base_name, data);
ivalues = g_key_file_get_integer_list (icon_file,
"Icon Data", "EmbeddedTextRectangle",
&length, NULL);
if (ivalues)
{
if (length == 4)
{
data->has_embedded_rect = TRUE;
data->x0 = ivalues[0];
data->y0 = ivalues[1];
data->x1 = ivalues[2];
data->y1 = ivalues[3];
}
g_free (ivalues);
}
str = g_key_file_get_string (icon_file, "Icon Data", "AttachPoints", NULL);
if (str)
{
split = g_strsplit (str, "|", -1);
data->n_attach_points = g_strv_length (split);
data->attach_points = g_malloc (sizeof (GdkPoint) * data->n_attach_points);
i = 0;
while (split[i] != NULL && i < data->n_attach_points)
{
split_point = strchr (split[i], ',');
if (split_point)
{
*split_point = 0;
split_point++;
data->attach_points[i].x = atoi (split[i]);
data->attach_points[i].y = atoi (split_point);
}
i++;
}
g_strfreev (split);
g_free (str);
}
data->display_name = g_key_file_get_locale_string (icon_file,
"Icon Data", "DisplayName",
NULL, NULL);
g_key_file_free (icon_file);
}
}
static void
scan_directory (GtkIconThemePrivate *icon_theme,
IconThemeDir *dir, char *full_dir)
{
GDir *gdir;
const char *name;
char *base_name, *dot;
char *path;
IconSuffix suffix, hash_suffix;
GTK_NOTE (ICONTHEME,
g_print ("scanning directory %s\n", full_dir));
dir->icons = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, NULL);
gdir = g_dir_open (full_dir, 0, NULL);
if (gdir == NULL)
return;
while ((name = g_dir_read_name (gdir)))
{
if (g_str_has_suffix (name, ".icon"))
{
if (dir->icon_data == NULL)
dir->icon_data = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)icon_data_free);
path = g_build_filename (full_dir, name, NULL);
if (g_file_test (path, G_FILE_TEST_IS_REGULAR))
load_icon_data (dir, path, name);
g_free (path);
continue;
}
suffix = suffix_from_name (name);
if (suffix == ICON_SUFFIX_NONE)
continue;
base_name = g_strdup (name);
dot = strrchr (base_name, '.');
*dot = 0;
hash_suffix = GPOINTER_TO_INT (g_hash_table_lookup (dir->icons, base_name));
g_hash_table_replace (dir->icons, base_name, GUINT_TO_POINTER (hash_suffix| suffix));
g_hash_table_insert (icon_theme->all_icons, base_name, NULL);
}
g_dir_close (gdir);
}
static void
theme_subdir_load (GtkIconTheme *icon_theme,
IconTheme *theme,
GKeyFile *theme_file,
char *subdir)
{
GList *d;
char *type_string;
IconThemeDir *dir;
IconThemeDirType type;
char *context_string;
GQuark context;
int size;
int min_size;
int max_size;
int threshold;
char *full_dir;
GError *error = NULL;
IconThemeDirMtime *dir_mtime;
size = g_key_file_get_integer (theme_file, subdir, "Size", &error);
if (error)
{
g_error_free (error);
g_warning ("Theme directory %s of theme %s has no size field\n",
subdir, theme->name);
return;
}
type = ICON_THEME_DIR_THRESHOLD;
type_string = g_key_file_get_string (theme_file, subdir, "Type", NULL);
if (type_string)
{
if (strcmp (type_string, "Fixed") == 0)
type = ICON_THEME_DIR_FIXED;
else if (strcmp (type_string, "Scalable") == 0)
type = ICON_THEME_DIR_SCALABLE;
else if (strcmp (type_string, "Threshold") == 0)
type = ICON_THEME_DIR_THRESHOLD;
g_free (type_string);
}
context = 0;
context_string = g_key_file_get_string (theme_file, subdir, "Context", NULL);
if (context_string)
{
context = g_quark_from_string (context_string);
g_free (context_string);
}
max_size = g_key_file_get_integer (theme_file, subdir, "MaxSize", &error);
if (error)
{
max_size = size;
g_error_free (error);
error = NULL;
}
min_size = g_key_file_get_integer (theme_file, subdir, "MinSize", &error);
if (error)
{
min_size = size;
g_error_free (error);
error = NULL;
}
threshold = g_key_file_get_integer (theme_file, subdir, "Threshold", &error);
if (error)
{
threshold = 2;
g_error_free (error);
error = NULL;
}
for (d = icon_theme->priv->dir_mtimes; d; d = d->next)
{
dir_mtime = (IconThemeDirMtime *)d->data;
if (dir_mtime->mtime == 0)
continue; /* directory doesn't exist */
full_dir = g_build_filename (dir_mtime->dir, subdir, NULL);
/* First, see if we have a cache for the directory */
if (dir_mtime->cache != NULL || g_file_test (full_dir, G_FILE_TEST_IS_DIR))
{
if (dir_mtime->cache == NULL)
{
/* This will return NULL if the cache doesn't exist or is outdated */
dir_mtime->cache = _gtk_icon_cache_new_for_path (dir_mtime->dir);
}
dir = g_new (IconThemeDir, 1);
dir->type = type;
dir->context = context;
dir->size = size;
dir->min_size = min_size;
dir->max_size = max_size;
dir->threshold = threshold;
dir->dir = full_dir;
dir->icon_data = NULL;
dir->subdir = g_strdup (subdir);
if (dir_mtime->cache != NULL)
dir->cache = _gtk_icon_cache_ref (dir_mtime->cache);
else
{
dir->cache = NULL;
scan_directory (icon_theme->priv, dir, full_dir);
}
theme->dirs = g_list_prepend (theme->dirs, dir);
}
else
g_free (full_dir);
}
}
static void
icon_data_free (GtkIconData *icon_data)
{
g_free (icon_data->attach_points);
g_free (icon_data->display_name);
g_free (icon_data);
}
/*
* GtkIconInfo
*/
GType
gtk_icon_info_get_type (void)
{
static GType our_type = 0;
if (our_type == 0)
our_type = g_boxed_type_register_static ("GtkIconInfo",
(GBoxedCopyFunc) gtk_icon_info_copy,
(GBoxedFreeFunc) gtk_icon_info_free);
return our_type;
}
static GtkIconInfo *
icon_info_new (void)
{
GtkIconInfo *icon_info = g_new0 (GtkIconInfo, 1);
icon_info->scale = -1.;
return icon_info;
}
static GtkIconInfo *
icon_info_new_builtin (BuiltinIcon *icon)
{
GtkIconInfo *icon_info = icon_info_new ();
icon_info->builtin_pixbuf = g_object_ref (icon->pixbuf);
icon_info->dir_type = ICON_THEME_DIR_THRESHOLD;
icon_info->dir_size = icon->size;
icon_info->threshold = 2;
return icon_info;
}
/**
* gtk_icon_info_copy:
* @icon_info: a #GtkIconInfo
*
* Make a copy of a #GtkIconInfo.
*
* Return value: the new GtkIconInfo
*
* Since: 2.4
**/
GtkIconInfo *
gtk_icon_info_copy (GtkIconInfo *icon_info)
{
GtkIconInfo *copy;
g_return_val_if_fail (icon_info != NULL, NULL);
copy = g_memdup (icon_info, sizeof (GtkIconInfo));
if (copy->builtin_pixbuf)
g_object_ref (copy->builtin_pixbuf);
if (copy->pixbuf)
g_object_ref (copy->pixbuf);
if (copy->load_error)
copy->load_error = g_error_copy (copy->load_error);
if (copy->filename)
copy->filename = g_strdup (copy->filename);
#ifdef G_OS_WIN32
if (copy->cp_filename)
copy->cp_filename = g_strdup (copy->cp_filename);
#endif
return copy;
}
/**
* gtk_icon_info_free:
* @icon_info: a #GtkIconInfo
*
* Free a #GtkIconInfo and associated information
*
* Since: 2.4
**/
void
gtk_icon_info_free (GtkIconInfo *icon_info)
{
g_return_if_fail (icon_info != NULL);
if (icon_info->filename)
g_free (icon_info->filename);
#ifdef G_OS_WIN32
if (icon_info->cp_filename)
g_free (icon_info->cp_filename);
#endif
if (icon_info->builtin_pixbuf)
g_object_unref (icon_info->builtin_pixbuf);
if (icon_info->pixbuf)
g_object_unref (icon_info->pixbuf);
if (icon_info->cache_pixbuf)
g_object_unref (icon_info->cache_pixbuf);
g_free (icon_info);
}
/**
* gtk_icon_info_get_base_size:
* @icon_info: a #GtkIconInfo
*
* Gets the base size for the icon. The base size
* is a size for the icon that was specified by
* the icon theme creator. This may be different
* than the actual size of image; an example of
* this is small emblem icons that can be attached
* to a larger icon. These icons will be given
* the same base size as the larger icons to which
* they are attached.
*
* Return value: the base size, or 0, if no base
* size is known for the icon.
*
* Since: 2.4
**/
gint
gtk_icon_info_get_base_size (GtkIconInfo *icon_info)
{
g_return_val_if_fail (icon_info != NULL, 0);
return icon_info->dir_size;
}
/**
* gtk_icon_info_get_filename:
* @icon_info: a #GtkIconInfo
*
* Gets the filename for the icon. If the
* %GTK_ICON_LOOKUP_USE_BUILTIN flag was passed
* to gtk_icon_theme_lookup_icon(), there may be
* no filename if a builtin icon is returned; in this
* case, you should use gtk_icon_info_get_builtin_pixbuf().
*
* Return value: the filename for the icon, or %NULL
* if gtk_icon_info_get_builtin_pixbuf() should
* be used instead. The return value is owned by
* GTK+ and should not be modified or freed.
*
* Since: 2.4
**/
G_CONST_RETURN gchar *
gtk_icon_info_get_filename (GtkIconInfo *icon_info)
{
g_return_val_if_fail (icon_info != NULL, NULL);
return icon_info->filename;
}
/**
* gtk_icon_info_get_builtin_pixbuf:
* @icon_info: a #GtkIconInfo structure
*
* Gets the built-in image for this icon, if any. To allow
* GTK+ to use built in icon images, you must pass the
* %GTK_ICON_LOOKUP_USE_BUILTIN to
* gtk_icon_theme_lookup_icon().
*
* Return value: the built-in image pixbuf, or %NULL. No
* extra reference is added to the returned pixbuf, so if
* you want to keep it around, you must use g_object_ref().
* The returned image must not be modified.
*
* Since: 2.4
**/
GdkPixbuf *
gtk_icon_info_get_builtin_pixbuf (GtkIconInfo *icon_info)
{
g_return_val_if_fail (icon_info != NULL, NULL);
return icon_info->builtin_pixbuf;
}
static GdkPixbuf *
load_svg_at_size (const gchar *filename,
gint size,
GError **error)
{
GdkPixbuf *pixbuf = NULL;
GdkPixbufLoader *loader = NULL;
gchar *contents = NULL;
gsize length;
if (!g_file_get_contents (filename,
&contents, &length, error))
goto bail;
loader = gdk_pixbuf_loader_new_with_type ("svg", error);
if (loader == NULL)
goto bail;
gdk_pixbuf_loader_set_size (loader, size, size);
if (!gdk_pixbuf_loader_write (loader, contents, length, error))
{
gdk_pixbuf_loader_close (loader, NULL);
goto bail;
}
if (!gdk_pixbuf_loader_close (loader, error))
goto bail;
pixbuf = g_object_ref (gdk_pixbuf_loader_get_pixbuf (loader));
bail:
if (loader)
g_object_unref (loader);
if (contents)
g_free (contents);
return pixbuf;
}
/* This function contains the complicatd logic for deciding
* on the size at which to load the icon and loading it at
* that size.
*/
static gboolean
icon_info_ensure_scale_and_pixbuf (GtkIconInfo *icon_info,
gboolean scale_only)
{
int image_width, image_height;
GdkPixbuf *source_pixbuf;
/* First check if we already succeeded have the necessary
* information (or failed earlier)
*/
if (scale_only && icon_info->scale >= 0)
return TRUE;
if (icon_info->pixbuf)
return TRUE;
if (icon_info->load_error)
return FALSE;
/* SVG icons are a special case - we just immediately scale them
* to the desired size
*/
if (icon_info->filename && g_str_has_suffix (icon_info->filename, ".svg"))
{
icon_info->scale = icon_info->desired_size / 1000.;
if (scale_only)
return TRUE;
icon_info->pixbuf = load_svg_at_size (icon_info->filename,
icon_info->desired_size,
&icon_info->load_error);
return icon_info->pixbuf != NULL;
}
/* In many cases, the scale can be determined without actual access
* to the icon file. This is generally true when we have a size
* for the directory where the icon is; the image size doesn't
* matter in that case.
*/
if (icon_info->dir_type == ICON_THEME_DIR_FIXED)
icon_info->scale = 1.0;
else if (icon_info->dir_type == ICON_THEME_DIR_THRESHOLD)
{
if (icon_info->desired_size >= icon_info->dir_size - icon_info->threshold &&
icon_info->desired_size <= icon_info->dir_size + icon_info->threshold)
icon_info->scale = 1.0;
else if (icon_info->dir_size > 0)
icon_info->scale =(gdouble) icon_info->desired_size / icon_info->dir_size;
}
else if (icon_info->dir_type == ICON_THEME_DIR_SCALABLE)
{
if (icon_info->dir_size > 0)
icon_info->scale = (gdouble) icon_info->desired_size / icon_info->dir_size;
}
if (icon_info->scale >= 0. && scale_only)
return TRUE;
/* At this point, we need to actually get the icon; either from the
* builting image or by loading the file
*/
if (icon_info->builtin_pixbuf)
source_pixbuf = g_object_ref (icon_info->builtin_pixbuf);
else if (icon_info->cache_pixbuf)
source_pixbuf = g_object_ref (icon_info->cache_pixbuf);
else
{
source_pixbuf = gdk_pixbuf_new_from_file (icon_info->filename,
&icon_info->load_error);
if (!source_pixbuf)
return FALSE;
}
/* Do scale calculations that depend on the image size
*/
image_width = gdk_pixbuf_get_width (source_pixbuf);
image_height = gdk_pixbuf_get_height (source_pixbuf);
if (icon_info->scale < 0.0)
{
gint image_size = MAX (image_width, image_height);
if (image_size > 0)
icon_info->scale = icon_info->desired_size / (gdouble)image_size;
else
icon_info->scale = 1.0;
if (icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
icon_info->scale = MIN (icon_info->scale, 1.0);
}
/* We don't short-circuit out here for scale_only, since, now
* we've loaded the icon, we might as well go ahead and finish
* the job. This is a bit of a waste when we scale here
* and never get the final pixbuf; at the cost of a bit of
* extra complexity, we could keep the source pixbuf around
* but not actually scale it until neede.
*/
if (icon_info->scale == 1.0)
icon_info->pixbuf = source_pixbuf;
else
{
icon_info->pixbuf = gdk_pixbuf_scale_simple (source_pixbuf,
0.5 + image_width * icon_info->scale,
0.5 + image_height * icon_info->scale,
GDK_INTERP_BILINEAR);
g_object_unref (source_pixbuf);
}
return TRUE;
}
/**
* gtk_icon_info_load_icon:
* @icon_info: a #GtkIconInfo structure from gtk_icon_theme_lookup_icon()
* @error: location to store error information on failure, or %NULL.
*
* Renders an icon previously looked up in an icon theme using
* gtk_icon_theme_lookup_icon(); the size will be based on the size
* passed to gtk_icon_theme_lookup_icon(). Note that the resulting
* pixbuf may not be exactly this size; an icon theme may have icons
* that differ slightly from their nominal sizes, and in addition GTK+
* will avoid scaling icons that it considers sufficiently close to the
* requested size or for which the source image would have to be scaled
* up too far. (This maintains sharpness.)
*
* Return value: the rendered icon; this may be a newly created icon
* or a new reference to an internal icon, so you must not modify
* the icon. Use g_object_unref() to release your reference to the
* icon.
*
* Since: 2.4
**/
GdkPixbuf *
gtk_icon_info_load_icon (GtkIconInfo *icon_info,
GError **error)
{
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
icon_info_ensure_scale_and_pixbuf (icon_info, FALSE);
if (icon_info->load_error)
{
g_propagate_error (error, icon_info->load_error);
return NULL;
}
return g_object_ref (icon_info->pixbuf);
}
/**
* gtk_icon_info_set_raw_coordinates:
* @icon_info: a #GtkIconInfo
* @raw_coordinates: whether the coordinates of embedded rectangles
* and attached points should be returned in their original
* (unscaled) form.
*
* Sets whether the coordinates returned by gtk_icon_info_get_embedded_rect()
* and gtk_icon_info_get_attach_points() should be returned in their
* original form as specified in the icon theme, instead of scaled
* appropriately for the pixbuf returned by gtk_icon_info_load_icon().
*
* Raw coordinates are somewhat strange; they are specified to be with
* respect to the unscaled pixmap for PNG and XPM icons, but for SVG
* icons, they are in a 1000x1000 coordinate space that is scaled
* to the final size of the icon. You can determine if the icon is an SVG
* icon by using gtk_icon_info_get_filename(), and seeing if it is non-%NULL
* and ends in '.svg'.
*
* This function is provided primarily to allow compatibility wrappers
* for older API's, and is not expected to be useful for applications.
*
* Since: 2.4
**/
void
gtk_icon_info_set_raw_coordinates (GtkIconInfo *icon_info,
gboolean raw_coordinates)
{
g_return_if_fail (icon_info != NULL);
icon_info->raw_coordinates = raw_coordinates != FALSE;
}
/* Scale coordinates from the icon data prior to returning
* them to the user.
*/
static gboolean
icon_info_scale_point (GtkIconInfo *icon_info,
gint x,
gint y,
gint *x_out,
gint *y_out)
{
if (icon_info->raw_coordinates)
{
*x_out = x;
*y_out = y;
}
else
{
if (!icon_info_ensure_scale_and_pixbuf (icon_info, TRUE))
return FALSE;
*x_out = 0.5 + x * icon_info->scale;
*y_out = 0.5 + y * icon_info->scale;
}
return TRUE;
}
/**
* gtk_icon_info_get_embedded_rect:
* @icon_info: a #GtkIconInfo
* @rectangle: #GdkRectangle in which to store embedded
* rectangle coordinates; coordinates are only stored
* when this function returns %TRUE.
*
* Gets the coordinates of a rectangle within the icon
* that can be used for display of information such
* as a preview of the contents of a text file.
* See gtk_icon_info_set_raw_coordinates() for further
* information about the coordinate system.
*
* Return value: %TRUE if the icon has an embedded rectangle
*
* Since: 2.4
**/
gboolean
gtk_icon_info_get_embedded_rect (GtkIconInfo *icon_info,
GdkRectangle *rectangle)
{
g_return_val_if_fail (icon_info != NULL, FALSE);
if (icon_info->data && icon_info->data->has_embedded_rect &&
icon_info_ensure_scale_and_pixbuf (icon_info, TRUE))
{
gint scaled_x0, scaled_y0;
gint scaled_x1, scaled_y1;
if (rectangle)
{
icon_info_scale_point (icon_info,
icon_info->data->x0, icon_info->data->y0,
&scaled_x0, &scaled_y0);
icon_info_scale_point (icon_info,
icon_info->data->x1, icon_info->data->y1,
&scaled_x1, &scaled_y1);
rectangle->x = scaled_x0;
rectangle->y = scaled_y0;
rectangle->width = scaled_x1 - rectangle->x;
rectangle->height = scaled_y1 - rectangle->y;
}
return TRUE;
}
else
return FALSE;
}
/**
* gtk_icon_info_get_attach_points:
* @icon_info: a #GtkIconInfo
* @points: location to store pointer to an array of points, or %NULL
* free the array of points with g_free().
* @n_points: location to store the number of points in @points, or %NULL
*
* Fetches the set of attach points for an icon. An attach point
* is a location in the icon that can be used as anchor points for attaching
* emblems or overlays to the icon.
*
* Return value: %TRUE if there are any attach points for the icon.
*
* Since: 2.4
**/
gboolean
gtk_icon_info_get_attach_points (GtkIconInfo *icon_info,
GdkPoint **points,
gint *n_points)
{
g_return_val_if_fail (icon_info != NULL, FALSE);
if (icon_info->data && icon_info->data->n_attach_points &&
icon_info_ensure_scale_and_pixbuf (icon_info, TRUE))
{
if (points)
{
gint i;
*points = g_new (GdkPoint, icon_info->data->n_attach_points);
for (i = 0; i < icon_info->data->n_attach_points; i++)
icon_info_scale_point (icon_info,
icon_info->data->attach_points[i].x,
icon_info->data->attach_points[i].y,
&(*points)[i].x,
&(*points)[i].y);
}
if (n_points)
*n_points = icon_info->data->n_attach_points;
return TRUE;
}
else
{
if (points)
*points = NULL;
if (n_points)
*n_points = 0;
return FALSE;
}
}
/**
* gtk_icon_info_get_display_name:
* @icon_info: a #GtkIconInfo
*
* Gets the display name for an icon. A display name is a
* string to be used in place of the icon name in a user
* visible context like a list of icons.
*
* Return value: the display name for the icon or %NULL, if
* the icon doesn't have a specified display name. This value
* is owned @icon_info and must not be modified or free.
*
* Since: 2.4
**/
G_CONST_RETURN gchar *
gtk_icon_info_get_display_name (GtkIconInfo *icon_info)
{
g_return_val_if_fail (icon_info != NULL, NULL);
if (icon_info->data)
return icon_info->data->display_name;
else
return NULL;
}
/*
* Builtin icons
*/
/**
* gtk_icon_theme_add_builtin_icon:
* @icon_name: the name of the icon to register
* @size: the size at which to register the icon (different
* images can be registered for the same icon name
* at different sizes.)
* @pixbuf: #GdkPixbuf that contains the image to use
* for @icon_name.
*
* Registers a built-in icon for icon theme lookups. The idea
* of built-in icons is to allow an application or library
* that uses themed icons to function requiring files to
* be present in the file system. For instance, the default
* images for all of GTK+'s stock icons are registered
* as built-icons.
*
* In general, if you use gtk_icon_theme_add_builtin_icon()
* you should also install the icon in the icon theme, so
* that the icon is generally available.
*
* This function will generally be used with pixbufs loaded
* via gdk_pixbuf_new_from_inline().
*
* Since: 2.4
**/
void
gtk_icon_theme_add_builtin_icon (const gchar *icon_name,
gint size,
GdkPixbuf *pixbuf)
{
BuiltinIcon *default_icon;
GSList *icons;
gpointer key;
g_return_if_fail (icon_name != NULL);
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
if (!icon_theme_builtin_icons)
icon_theme_builtin_icons = g_hash_table_new (g_str_hash, g_str_equal);
icons = g_hash_table_lookup (icon_theme_builtin_icons, icon_name);
if (!icons)
key = g_strdup (icon_name);
else
key = (gpointer)icon_name; /* Won't get stored */
default_icon = g_new (BuiltinIcon, 1);
default_icon->size = size;
default_icon->pixbuf = g_object_ref (pixbuf);
icons = g_slist_prepend (icons, default_icon);
/* Replaces value, leaves key untouched
*/
g_hash_table_insert (icon_theme_builtin_icons, key, icons);
}
/* Look up a builtin icon; the min_difference_p and
* has_larger_p out parameters allow us to combine
* this lookup with searching through the actual directories
* of the "hicolor" icon theme. See theme_lookup_icon()
* for how they are used.
*/
static BuiltinIcon *
find_builtin_icon (const gchar *icon_name,
gint size,
gint *min_difference_p,
gboolean *has_larger_p)
{
GSList *icons = NULL;
gint min_difference = G_MAXINT;
gboolean has_larger = FALSE;
BuiltinIcon *min_icon = NULL;
_gtk_icon_factory_ensure_default_icons ();
if (!icon_theme_builtin_icons)
return NULL;
icons = g_hash_table_lookup (icon_theme_builtin_icons, icon_name);
while (icons)
{
BuiltinIcon *default_icon = icons->data;
int min, max, difference;
gboolean smaller;
min = default_icon->size - 2;
max = default_icon->size + 2;
smaller = size < min;
if (size < min)
difference = min - size;
else if (size > max)
difference = size - max;
else
difference = 0;
if (difference == 0)
{
min_icon = default_icon;
break;
}
if (!has_larger)
{
if (difference < min_difference || smaller)
{
min_difference = difference;
min_icon = default_icon;
has_larger = smaller;
}
}
else
{
if (difference < min_difference && smaller)
{
min_difference = difference;
min_icon = default_icon;
}
}
icons = icons->next;
}
if (min_difference_p)
*min_difference_p = min_difference;
if (has_larger_p)
*has_larger_p = has_larger;
return min_icon;
}
#ifdef G_OS_WIN32
/* DLL ABI stability backward compatibility versions */
#undef gtk_icon_theme_set_search_path
void
gtk_icon_theme_set_search_path (GtkIconTheme *icon_theme,
const gchar *path[],
gint n_elements)
{
const gchar **utf8_path;
gint i;
utf8_path = g_new (const gchar *, n_elements);
for (i = 0; i < n_elements; i++)
utf8_path[i] = g_locale_to_utf8 (path[i], -1, NULL, NULL, NULL);
gtk_icon_theme_set_search_path_utf8 (icon_theme, utf8_path, n_elements);
for (i = 0; i < n_elements; i++)
g_free ((gchar *) utf8_path[i]);
g_free (utf8_path);
}
#undef gtk_icon_theme_get_search_path
void
gtk_icon_theme_get_search_path (GtkIconTheme *icon_theme,
gchar **path[],
gint *n_elements)
{
gint i, n;
gtk_icon_theme_get_search_path_utf8 (icon_theme, path, &n);
if (n_elements)
*n_elements = n;
if (path)
{
for (i = 0; i < n; i++)
{
gchar *tem = (*path)[i];
(*path)[i] = g_locale_from_utf8 ((*path)[i], -1, NULL, NULL, NULL);
g_free (tem);
}
}
}
#undef gtk_icon_theme_append_search_path
void
gtk_icon_theme_append_search_path (GtkIconTheme *icon_theme,
const gchar *path)
{
gchar *utf8_path = g_locale_from_utf8 (path, -1, NULL, NULL, NULL);
gtk_icon_theme_append_search_path_utf8 (icon_theme, utf8_path);
g_free (utf8_path);
}
#undef gtk_icon_theme_prepend_search_path
void
gtk_icon_theme_prepend_search_path (GtkIconTheme *icon_theme,
const gchar *path)
{
gchar *utf8_path = g_locale_from_utf8 (path, -1, NULL, NULL, NULL);
gtk_icon_theme_prepend_search_path_utf8 (icon_theme, utf8_path);
g_free (utf8_path);
}
#undef gtk_icon_info_get_filename
G_CONST_RETURN gchar *
gtk_icon_info_get_filename (GtkIconInfo *icon_info)
{
g_return_val_if_fail (icon_info != NULL, NULL);
return icon_info->cp_filename;
}
#endif
#define __GTK_ICON_THEME_C__
#include "gtkaliasdef.c"
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