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gtk2/gtk/gtkicontheme.c
Owen Taylor 0c4c9f0d1c Remove an extraneous + 1 (#134015, Torsten Schoenfeld) 
Thu Feb 12 17:59:52 2004  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkicontheme.c (gtk_icon_theme_get_search_path):
        Remove an extraneous + 1 (#134015, Torsten Schoenfeld)
2004-02-12 23:06:30 +00:00

2627 lines
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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>
#ifdef G_OS_WIN32
#ifndef S_ISDIR
#define S_ISDIR(mode) ((mode)&_S_IFDIR)
#endif
#endif /* G_OS_WIN32 */
#include "gtkicontheme.h"
#include "gtkiconthemeparser.h"
#include "gtkintl.h"
#include "gtksettings.h"
#include "gtkprivate.h"
#define DEFAULT_THEME_NAME "hicolor"
typedef struct _GtkIconData GtkIconData;
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,
} 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;
};
struct _GtkIconInfo
{
/* Information about the source
*/
gchar *filename;
GdkPixbuf *builtin_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;
struct _GtkIconData
{
gboolean has_embedded_rect;
gint x0, y0, x1, y1;
GdkPoint *attach_points;
gint n_attach_points;
gchar *display_name;
};
typedef struct
{
IconThemeDirType type;
GQuark context;
int size;
int min_size;
int max_size;
int threshold;
char *dir;
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 */
} 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,
GtkIconThemeFile *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 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 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.
*
* 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.
*
* 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);
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 ()
{
GSList *formats = gdk_pixbuf_get_formats ();
GSList *tmp_list;
gboolean found_svg = FALSE;
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);
return found_svg;
}
static void
gtk_icon_theme_init (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
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);
priv->search_path = g_new (char *, 5);
priv->search_path[0] = g_build_filename (g_get_home_dir (),
".icons",
NULL);
priv->search_path[1] = g_build_filename (GTK_DATADIR, "pixmaps", NULL);
priv->search_path[2] = g_build_filename (GTK_DATADIR, "icons", NULL);
priv->search_path[3] = g_strdup ("/usr/share/icons");
priv->search_path[4] = g_strdup ("/usr/share/pixmaps");
priv->search_path_len = 5;
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)
{
g_free (dir_mtime->dir);
g_free (dir_mtime);
}
static void
do_theme_change (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
blow_themes (icon_theme);
g_signal_emit (G_OBJECT (icon_theme), signal_changed, 0);
if (priv->screen && priv->is_screen_singleton)
{
GtkSettings *settings = gtk_settings_get_for_screen (priv->screen);
_gtk_rc_reset_styles (settings);
}
}
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;
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);
}
/**
* 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
*
* 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_default().
*
* 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;
char *contents;
char *directories;
char *inherits;
GtkIconThemeFile *theme_file;
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->dir = path;
if (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);
}
theme_file = NULL;
for (i = 0; i < priv->search_path_len; i++)
{
path = g_build_filename (priv->search_path[i],
theme_name,
"index.theme",
NULL);
if (g_file_test (path, G_FILE_TEST_IS_REGULAR)) {
if (g_file_get_contents (path, &contents, NULL, NULL)) {
theme_file = _gtk_icon_theme_file_new_from_string (contents, NULL);
g_free (contents);
g_free (path);
break;
}
}
g_free (path);
}
if (theme_file == NULL)
return;
theme = g_new (IconTheme, 1);
if (!_gtk_icon_theme_file_get_locale_string (theme_file,
"Icon Theme",
"Name",
&theme->display_name))
{
g_warning ("Theme file for %s has no name\n", theme_name);
g_free (theme);
_gtk_icon_theme_file_free (theme_file);
return;
}
if (!_gtk_icon_theme_file_get_string (theme_file,
"Icon Theme",
"Directories",
&directories))
{
g_warning ("Theme file for %s has no directories\n", theme_name);
g_free (theme->display_name);
g_free (theme);
_gtk_icon_theme_file_free (theme_file);
return;
}
theme->name = g_strdup (theme_name);
_gtk_icon_theme_file_get_locale_string (theme_file,
"Icon Theme",
"Comment",
&theme->comment);
_gtk_icon_theme_file_get_string (theme_file,
"Icon Theme",
"Example",
&theme->example);
dirs = g_strsplit (directories, ",", 0);
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);
g_free (directories);
/* Prepend the finished theme */
priv->themes = g_list_prepend (priv->themes, theme);
if (_gtk_icon_theme_file_get_string (theme_file,
"Icon Theme",
"Inherits",
&inherits))
{
themes = g_strsplit (inherits, ",", 0);
for (i = 0; themes[i] != NULL; i++)
insert_theme (icon_theme, themes[i]);
g_strfreev (themes);
g_free (inherits);
}
_gtk_icon_theme_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->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;
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];
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->no_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->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;
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 *icon_theme = l->data;
if (strcmp (icon_theme->name, DEFAULT_THEME_NAME) == 0)
found_default = TRUE;
icon_info = theme_lookup_icon (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);
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://freedesktop.org/Software/icon-theme/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().
*
* 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;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), FALSE);
priv = icon_theme->priv;
ensure_valid_themes (icon_theme);
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_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 = 0;
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 = 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)
{
g_hash_table_destroy (dir->icons);
if (dir->icon_data)
g_hash_table_destroy (dir->icon_data);
g_free (dir->dir);
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 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;
suffix = GPOINTER_TO_UINT (g_hash_table_lookup (dir->icons, icon_name));
if (suffix != ICON_SUFFIX_NONE &&
(allow_svg || suffix != ICON_SUFFIX_SVG))
{
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 ();
suffix = GPOINTER_TO_UINT (g_hash_table_lookup (min_dir->icons, icon_name));
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);
if (min_dir->icon_data != NULL)
icon_info->data = g_hash_table_lookup (min_dir->icon_data, icon_name);
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)
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)
{
GtkIconThemeFile *icon_file;
char *base_name;
char **split;
char *contents;
char *dot;
char *str;
char *split_point;
int i;
GtkIconData *data;
if (g_file_get_contents (path, &contents, NULL, NULL))
{
icon_file = _gtk_icon_theme_file_new_from_string (contents, NULL);
if (icon_file)
{
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);
if (_gtk_icon_theme_file_get_string (icon_file, "Icon Data",
"EmbeddedTextRectangle",
&str))
{
split = g_strsplit (str, ",", 4);
i = 0;
while (split[i] != NULL)
i++;
if (i==4)
{
data->has_embedded_rect = TRUE;
data->x0 = atoi (split[0]);
data->y0 = atoi (split[1]);
data->x1 = atoi (split[2]);
data->y1 = atoi (split[3]);
}
g_strfreev (split);
g_free (str);
}
if (_gtk_icon_theme_file_get_string (icon_file, "Icon Data",
"AttachPoints",
&str))
{
split = g_strsplit (str, "|", -1);
i = 0;
while (split[i] != NULL)
i++;
data->n_attach_points = i;
data->attach_points = g_malloc (sizeof (GdkPoint) * i);
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);
}
_gtk_icon_theme_file_get_locale_string (icon_file, "Icon Data",
"DisplayName",
&data->display_name);
_gtk_icon_theme_file_free (icon_file);
}
g_free (contents);
}
}
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;
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,
GtkIconThemeFile *theme_file,
char *subdir)
{
int base;
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;
if (!_gtk_icon_theme_file_get_integer (theme_file,
subdir,
"Size",
&size))
{
g_warning ("Theme directory %s of theme %s has no size field\n", subdir, theme->name);
return;
}
type = ICON_THEME_DIR_THRESHOLD;
if (_gtk_icon_theme_file_get_string (theme_file, subdir, "Type", &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;
if (_gtk_icon_theme_file_get_string (theme_file, subdir, "Context", &context_string))
{
context = g_quark_from_string (context_string);
g_free (context_string);
}
if (!_gtk_icon_theme_file_get_integer (theme_file,
subdir,
"MaxSize",
&max_size))
max_size = size;
if (!_gtk_icon_theme_file_get_integer (theme_file,
subdir,
"MinSize",
&min_size))
min_size = size;
if (!_gtk_icon_theme_file_get_integer (theme_file,
subdir,
"Threshold",
&threshold))
threshold = 2;
for (base = 0; base < icon_theme->priv->search_path_len; base++)
{
full_dir = g_build_filename (icon_theme->priv->search_path[base],
theme->name,
subdir,
NULL);
if (g_file_test (full_dir, G_FILE_TEST_IS_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;
scan_directory (icon_theme->priv, dir, full_dir);
theme->dirs = g_list_append (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);
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);
if (icon_info->builtin_pixbuf)
g_object_unref (icon_info->builtin_pixbuf);
if (icon_info->pixbuf)
g_object_unref (icon_info->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;
gsize length;
if (!g_file_get_contents (filename,
&contents, &length, error))
goto bail;
loader = gdk_pixbuf_loader_new ();
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);
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
{
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 / image_size;
else
icon_info->scale = 1.0;
if (icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
icon_info->scale = MAX (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:
*
* Renders an icon previously looked up in an icon theme using
* gtk_icon_theme_lookup_icon(); the size will be based on the size
* pssed 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. (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;
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;
}
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