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gtk2/gtk/gtkicontheme.c

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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, see <http://www.gnu.org/licenses/>.
*/
#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
#define WIN32_MEAN_AND_LEAN
#include <windows.h>
#include "win32/gdkwin32.h"
#endif /* G_OS_WIN32 */
#include "gtkicontheme.h"
#include "gtkdebug.h"
#include "gtkiconfactory.h"
#include "gtkiconcache.h"
#include "gtkbuiltincache.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtknumerableiconprivate.h"
#include "gtksettings.h"
#include "gtkprivate.h"
#undef GDK_DEPRECATED
#undef GDK_DEPRECATED_FOR
#define GDK_DEPRECATED
#define GDK_DEPRECATED_FOR(f)
#include "deprecated/gtkstyle.h"
/**
* SECTION:gtkicontheme
* @Short_description: Looking up icons by name
* @Title: GtkIconTheme
*
* #GtkIconTheme provides a facility for looking up icons by name
* and size. The main reason for using a name rather than simply
* providing a filename is to allow different icons to be used
* depending on what <firstterm>icon theme</firstterm> is selected
* by the user. The operation of icon themes on Linux and Unix
* follows the <ulink
* url="http://www.freedesktop.org/Standards/icon-theme-spec">Icon
* Theme Specification</ulink>. There is a default icon theme,
* named <literal>hicolor</literal> where applications should install
* their icons, but more additional application themes can be
* installed as operating system vendors and users choose.
*
* Named icons are similar to the <xref linkend="gtk3-Themeable-Stock-Images"/>
* facility, and the distinction between the two may be a bit confusing.
* A few things to keep in mind:
* <itemizedlist>
* <listitem>
* Stock images usually are used in conjunction with
* <xref linkend="gtk3-Stock-Items"/>, such as %GTK_STOCK_OK or
* %GTK_STOCK_OPEN. Named icons are easier to set up and therefore
* are more useful for new icons that an application wants to
* add, such as application icons or window icons.
* </listitem>
* <listitem>
* Stock images can only be loaded at the symbolic sizes defined
* by the #GtkIconSize enumeration, or by custom sizes defined
* by gtk_icon_size_register(), while named icons are more flexible
* and any pixel size can be specified.
* </listitem>
* <listitem>
* Because stock images are closely tied to stock items, and thus
* to actions in the user interface, stock images may come in
* multiple variants for different widget states or writing
* directions.
* </listitem>
* </itemizedlist>
* A good rule of thumb is that if there is a stock image for what
* you want to use, use it, otherwise use a named icon. It turns
* out that internally stock images are generally defined in
* terms of one or more named icons. (An example of the
* more than one case is icons that depend on writing direction;
* %GTK_STOCK_GO_FORWARD uses the two themed icons
* "gtk-stock-go-forward-ltr" and "gtk-stock-go-forward-rtl".)
*
* In many cases, named themes are used indirectly, via #GtkImage
* or stock items, rather than directly, but looking up icons
* directly is also simple. The #GtkIconTheme object acts
* as a database of all the icons in the current theme. You
* can create new #GtkIconTheme objects, but its much more
* efficient to use the standard icon theme for the #GdkScreen
* so that the icon information is shared with other people
* looking up icons. In the case where the default screen is
* being used, looking up an icon can be as simple as:
* <informalexample>
* <programlisting>
* GError *error = NULL;
* GtkIconTheme *icon_theme;
* GdkPixbuf *pixbuf;
*
* icon_theme = gtk_icon_theme_get_default ();
* pixbuf = gtk_icon_theme_load_icon (icon_theme,
* "my-icon-name", // icon name
* 48, // size
* 0, // flags
* &error);
* if (!pixbuf)
* {
* g_warning ("Couldn't load icon: &percnt;s", error->message);
* g_error_free (error);
* }
* else
* {
* // Use the pixbuf
* g_object_unref (pixbuf);
* }
* </programlisting>
* </informalexample>
*/
#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
{
gchar *current_theme;
gchar *fallback_theme;
gchar **search_path;
gint search_path_len;
guint custom_theme : 1;
guint is_screen_singleton : 1;
guint pixbuf_supports_svg : 1;
guint themes_valid : 1;
guint check_reload : 1;
guint loading_themes : 1;
/* 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 */
glong last_stat_time;
GList *dir_mtimes;
gulong reset_styles_idle;
};
struct _GtkIconInfo
{
/* Information about the source
*/
gchar *filename;
GFile *icon_file;
GLoadableIcon *loadable;
GSList *emblem_infos;
/* 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;
guint raw_coordinates : 1;
guint forced_size : 1;
guint emblems_applied : 1;
guint ref_count;
/* Cached information if we go ahead and try to load
* the icon.
*/
GdkPixbuf *pixbuf;
GError *load_error;
gdouble scale;
GtkRequisition *symbolic_pixbuf_size;
};
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;
int subdir_index;
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_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_list_contexts (IconTheme *theme,
GHashTable *contexts);
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 gboolean rescan_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 guint signal_changed = 0;
static GHashTable *icon_theme_builtin_icons;
/* also used in gtkiconfactory.c */
GtkIconCache *_builtin_cache = NULL;
static GList *builtin_dirs = NULL;
G_DEFINE_TYPE (GtkIconTheme, gtk_icon_theme, G_TYPE_OBJECT)
/**
* 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: (transfer none): 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: (transfer none): 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);
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), I_("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 (I_("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), I_("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)
{
#define theme_changed(_old, _new) \
((_old && !_new) || (!_old && _new) || \
(_old && _new && strcmp (_old, _new) != 0))
GtkIconThemePrivate *priv = icon_theme->priv;
if (!priv->custom_theme)
{
gchar *theme = NULL;
gchar *fallback_theme = NULL;
gboolean changed = FALSE;
if (priv->screen)
{
GtkSettings *settings = gtk_settings_get_for_screen (priv->screen);
g_object_get (settings,
"gtk-icon-theme-name", &theme,
"gtk-fallback-icon-theme", &fallback_theme, NULL);
}
/* ensure that the current theme (even when just the default)
* is searched before any fallback theme
*/
if (!theme && fallback_theme)
theme = g_strdup (DEFAULT_THEME_NAME);
if (theme_changed (priv->current_theme, theme))
{
g_free (priv->current_theme);
priv->current_theme = theme;
changed = TRUE;
}
else
g_free (theme);
if (theme_changed (priv->fallback_theme, fallback_theme))
{
g_free (priv->fallback_theme);
priv->fallback_theme = fallback_theme;
changed = TRUE;
}
else
g_free (fallback_theme);
if (changed)
do_theme_change (icon_theme);
}
#undef theme_changed
}
/* 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);
g_signal_connect (settings, "notify::gtk-fallback-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;
GSList *tmp_list;
static gint found_svg = -1;
if (found_svg != -1)
return found_svg;
formats = gdk_pixbuf_get_formats ();
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;
const gchar * const *xdg_data_dirs;
int i, j;
priv = G_TYPE_INSTANCE_GET_PRIVATE (icon_theme,
GTK_TYPE_ICON_THEME,
GtkIconThemePrivate);
icon_theme->priv = priv;
priv->custom_theme = FALSE;
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_user_data_dir (), "icons", NULL);
priv->search_path[i++] = g_build_filename (g_get_home_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_slice_free (IconThemeDirMtime, dir_mtime);
}
static gboolean
reset_styles_idle (gpointer user_data)
{
GtkIconTheme *icon_theme;
GtkIconThemePrivate *priv;
icon_theme = GTK_ICON_THEME (user_data);
priv = icon_theme->priv;
if (priv->screen && priv->is_screen_singleton)
gtk_style_context_reset_widgets (priv->screen);
priv->reset_styles_idle = 0;
return FALSE;
}
static void
do_theme_change (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
if (!priv->themes_valid)
return;
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 =
gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2,
reset_styles_idle, icon_theme, NULL);
}
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_free_full (priv->themes, (GDestroyNotify) theme_destroy);
g_list_free_full (priv->dir_mtimes, (GDestroyNotify) free_dir_mtime);
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 (gtk_icon_theme_parent_class)->finalize (object);
}
/**
* gtk_icon_theme_set_search_path:
* @icon_theme: a #GtkIconTheme
* @path: (array length=n_elements) (element-type filename): 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: (allow-none) (array length=n_elements) (element-type filename) (out):
* 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: (type filename): 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: (type filename): 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: (allow-none): 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 (!priv->current_theme || 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
{
if (priv->custom_theme)
{
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 = NULL;
char *path;
GKeyFile *theme_file;
GError *error = NULL;
IconThemeDirMtime *dir_mtime;
GStatBuf 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_slice_new (IconThemeDirMtime);
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 || strcmp (theme_name, DEFAULT_THEME_NAME) == 0)
{
theme = g_new0 (IconTheme, 1);
theme->name = g_strdup (theme_name);
priv->themes = g_list_prepend (priv->themes, theme);
}
if (theme_file == NULL)
return;
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);
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);
priv->themes = g_list_remove (priv->themes, theme);
g_free (theme->name);
g_free (theme->display_name);
g_free (theme);
g_key_file_free (theme_file);
return;
}
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);
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)
{
g_free (unthemed_icon->svg_filename);
g_free (unthemed_icon->no_svg_filename);
g_slice_free (UnthemedIcon, unthemed_icon);
}
static char *
strip_suffix (const char *filename)
{
const char *dot;
dot = strrchr (filename, '.');
if (dot == NULL)
return g_strdup (filename);
return g_strndup (filename, dot - filename);
}
static void
load_themes (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
GDir *gdir;
int base;
char *dir;
const char *file;
UnthemedIcon *unthemed_icon;
IconSuffix old_suffix, new_suffix;
GTimeVal tv;
IconThemeDirMtime *dir_mtime;
GStatBuf stat_buf;
priv = icon_theme->priv;
priv->all_icons = g_hash_table_new (g_str_hash, g_str_equal);
if (priv->current_theme)
insert_theme (icon_theme, priv->current_theme);
/* Always look in the "default" icon theme, and in a fallback theme */
if (priv->fallback_theme)
insert_theme (icon_theme, priv->fallback_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_slice_new (IconThemeDirMtime);
priv->dir_mtimes = g_list_append (priv->dir_mtimes, dir_mtime);
dir_mtime->dir = g_strdup (dir);
dir_mtime->mtime = 0;
dir_mtime->cache = NULL;
if (g_stat (dir, &stat_buf) != 0 || !S_ISDIR (stat_buf.st_mode))
continue;
dir_mtime->mtime = stat_buf.st_mtime;
dir_mtime->cache = _gtk_icon_cache_new_for_path (dir);
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)
{
char *abs_file;
char *base_name;
abs_file = g_build_filename (dir, file, NULL);
base_name = strip_suffix (file);
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_slice_new0 (UnthemedIcon);
if (new_suffix == ICON_SUFFIX_SVG)
unthemed_icon->svg_filename = abs_file;
else
unthemed_icon->no_svg_filename = abs_file;
/* takes ownership of base_name */
g_hash_table_replace (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;
}
void
_gtk_icon_theme_ensure_builtin_cache (void)
{
static gboolean initialized = FALSE;
IconThemeDir *dir;
static IconThemeDir dirs[5] =
{
{ ICON_THEME_DIR_THRESHOLD, 0, 16, 16, 16, 2, NULL, "16", -1, NULL, NULL, NULL },
{ ICON_THEME_DIR_THRESHOLD, 0, 20, 20, 20, 2, NULL, "20", -1, NULL, NULL, NULL },
{ ICON_THEME_DIR_THRESHOLD, 0, 24, 24, 24, 2, NULL, "24", -1, NULL, NULL, NULL },
{ ICON_THEME_DIR_THRESHOLD, 0, 32, 32, 32, 2, NULL, "32", -1, NULL, NULL, NULL },
{ ICON_THEME_DIR_THRESHOLD, 0, 48, 48, 48, 2, NULL, "48", -1, NULL, NULL, NULL }
};
gint i;
if (!initialized)
{
initialized = TRUE;
_builtin_cache = _gtk_icon_cache_new ((gchar *)builtin_icons);
for (i = 0; i < G_N_ELEMENTS (dirs); i++)
{
dir = &(dirs[i]);
dir->cache = _gtk_icon_cache_ref (_builtin_cache);
dir->subdir_index = _gtk_icon_cache_get_directory_index (dir->cache, dir->subdir);
builtin_dirs = g_list_append (builtin_dirs, dir);
}
}
}
static void
ensure_valid_themes (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv = icon_theme->priv;
GTimeVal tv;
gboolean was_valid = priv->themes_valid;
if (priv->loading_themes)
return;
priv->loading_themes = TRUE;
_gtk_icon_theme_ensure_builtin_cache ();
if (priv->themes_valid)
{
g_get_current_time (&tv);
if (ABS (tv.tv_sec - priv->last_stat_time) > 5 &&
rescan_themes (icon_theme))
blow_themes (icon_theme);
}
if (!priv->themes_valid)
{
load_themes (icon_theme);
if (was_valid)
{
g_signal_emit (icon_theme, signal_changed, 0);
}
}
priv->loading_themes = FALSE;
}
static GtkIconInfo *
choose_icon (GtkIconTheme *icon_theme,
const gchar *icon_names[],
gint size,
GtkIconLookupFlags flags)
{
GtkIconThemePrivate *priv;
GList *l;
GtkIconInfo *icon_info = NULL;
UnthemedIcon *unthemed_icon = NULL;
gboolean allow_svg;
gboolean use_builtin;
gint i;
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);
/* for symbolic icons, do a search in all registered themes first;
* a theme that inherits them from a parent theme might provide
* an alternative highcolor version, but still expect the symbolic icon
* to show up instead.
*/
if (icon_names[0] &&
g_str_has_suffix (icon_names[0], "-symbolic"))
{
for (l = priv->themes; l; l = l->next)
{
IconTheme *theme = l->data;
icon_info = theme_lookup_icon (theme, icon_names[0], size, allow_svg, use_builtin);
if (icon_info)
goto out;
}
}
for (l = priv->themes; l; l = l->next)
{
IconTheme *theme = l->data;
for (i = 0; icon_names[i]; i++)
{
icon_info = theme_lookup_icon (theme, icon_names[i], size, allow_svg, use_builtin);
if (icon_info)
goto out;
}
}
for (i = 0; icon_names[i]; i++)
{
unthemed_icon = g_hash_table_lookup (priv->unthemed_icons, icon_names[i]);
if (unthemed_icon)
break;
}
#ifdef G_OS_WIN32
/* Still not found an icon, check if reference to a Win32 resource */
if (!unthemed_icon)
{
gchar **resources;
HICON hIcon = NULL;
resources = g_strsplit (icon_names[0], ",", 0);
if (resources[0])
{
wchar_t *wfile = g_utf8_to_utf16 (resources[0], -1, NULL, NULL, NULL);
ExtractIconExW (wfile, resources[1] ? atoi (resources[1]) : 0, &hIcon, NULL, 1);
g_free (wfile);
}
if (hIcon)
{
icon_info = icon_info_new ();
icon_info->cache_pixbuf = gdk_win32_icon_to_pixbuf_libgtk_only (hIcon);
DestroyIcon (hIcon);
icon_info->dir_type = ICON_THEME_DIR_UNTHEMED;
icon_info->dir_size = size;
}
g_strfreev (resources);
}
#endif
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->icon_file = g_file_new_for_path (icon_info->filename);
icon_info->dir_type = ICON_THEME_DIR_UNTHEMED;
icon_info->dir_size = size;
}
out:
if (icon_info)
{
icon_info->desired_size = size;
icon_info->forced_size = (flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0;
}
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_names[0], DEFAULT_THEME_NAME, "http://icon-theme.freedesktop.org/releases");
}
}
}
return icon_info;
}
/**
* 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)
{
GtkIconInfo *info;
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);
GTK_NOTE (ICONTHEME,
g_print ("gtk_icon_theme_lookup_icon %s\n", icon_name));
if (flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK)
{
gchar **names;
gint dashes, i;
gchar *p;
dashes = 0;
for (p = (gchar *) icon_name; *p; p++)
if (*p == '-')
dashes++;
names = g_new (gchar *, dashes + 2);
names[0] = g_strdup (icon_name);
for (i = 1; i <= dashes; i++)
{
names[i] = g_strdup (names[i - 1]);
p = strrchr (names[i], '-');
*p = '\0';
}
names[dashes + 1] = NULL;
info = choose_icon (icon_theme, (const gchar **) names, size, flags);
g_strfreev (names);
}
else
{
const gchar *names[2];
names[0] = icon_name;
names[1] = NULL;
info = choose_icon (icon_theme, names, size, flags);
}
return info;
}
/**
* gtk_icon_theme_choose_icon:
* @icon_theme: a #GtkIconTheme
* @icon_names: (array zero-terminated=1): %NULL-terminated array of
* icon names 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.)
*
* If @icon_names contains more than one name, this function
* tries them all in the given order before falling back to
* inherited icon themes.
*
* 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: 2.12
*/
GtkIconInfo *
gtk_icon_theme_choose_icon (GtkIconTheme *icon_theme,
const gchar *icon_names[],
gint size,
GtkIconLookupFlags flags)
{
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
g_return_val_if_fail (icon_names != NULL, NULL);
g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
(flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
return choose_icon (icon_theme, icon_names, size, flags);
}
/* Error quark */
GQuark
gtk_icon_theme_error_quark (void)
{
return g_quark_from_static_string ("gtk-icon-theme-error-quark");
}
/**
* 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: (allow-none): 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: (transfer full): 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);
g_return_val_if_fail (icon_name != NULL, 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 (_builtin_cache &&
_gtk_icon_cache_has_icon (_builtin_cache, icon_name))
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: (array zero-terminated=1): 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, *icons;
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;
if (dir->type != ICON_THEME_DIR_SCALABLE && g_hash_table_lookup_extended (sizes, GINT_TO_POINTER (dir->size), NULL, NULL))
continue;
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);
}
}
}
for (d = builtin_dirs; d; d = d->next)
{
IconThemeDir *dir = d->data;
if (dir->type != ICON_THEME_DIR_SCALABLE && g_hash_table_lookup_extended (sizes, GINT_TO_POINTER (dir->size), NULL, NULL))
continue;
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);
}
}
if (icon_theme_builtin_icons)
{
icons = g_hash_table_lookup (icon_theme_builtin_icons, icon_name);
while (icons)
{
BuiltinIcon *icon = icons->data;
g_hash_table_insert (sizes, GINT_TO_POINTER (icon->size), NULL);
icons = icons->next;
}
}
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: (allow-none): 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 "Applications" and
* "MimeTypes".
*
* Return value: (element-type utf8) (transfer full): 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_list_contexts:
* @icon_theme: a #GtkIconTheme
*
* Gets the list of contexts available within the current
* hierarchy of icon themes
*
* Return value: (element-type utf8) (transfer full): a #GList list
* holding the names of all the contexts 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: 2.12
**/
GList *
gtk_icon_theme_list_contexts (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
GHashTable *contexts;
GList *list, *l;
priv = icon_theme->priv;
ensure_valid_themes (icon_theme);
contexts = g_hash_table_new (g_str_hash, g_str_equal);
l = priv->themes;
while (l != NULL)
{
theme_list_contexts (l->data, contexts);
l = l->next;
}
list = NULL;
g_hash_table_foreach (contexts,
add_key_to_list,
&list);
g_hash_table_destroy (contexts);
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;
}
static gboolean
rescan_themes (GtkIconTheme *icon_theme)
{
GtkIconThemePrivate *priv;
IconThemeDirMtime *dir_mtime;
GList *d;
int stat_res;
GStatBuf stat_buf;
GTimeVal tv;
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;
return TRUE;
}
g_get_current_time (&tv);
priv->last_stat_time = tv.tv_sec;
return FALSE;
}
/**
* 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)
{
gboolean retval;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), FALSE);
retval = rescan_themes (icon_theme);
if (retval)
do_theme_change (icon_theme);
return retval;
}
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_free_full (theme->dirs, (GDestroyNotify) theme_dir_destroy);
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_index);
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 %u\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 *dirs, *l;
IconThemeDir *dir, *min_dir;
char *file;
int min_difference, difference;
BuiltinIcon *closest_builtin = NULL;
gboolean smaller, has_larger, match;
IconSuffix suffix;
min_difference = G_MAXINT;
min_dir = NULL;
has_larger = FALSE;
match = FALSE;
/* Builtin icons are logically part of the default theme and
* are searched before other subdirectories of the default theme.
*/
if (use_builtin && strcmp (theme->name, DEFAULT_THEME_NAME) == 0)
{
closest_builtin = find_builtin_icon (icon_name,
size,
&min_difference,
&has_larger);
if (min_difference == 0)
return icon_info_new_builtin (closest_builtin);
dirs = builtin_dirs;
}
else
dirs = theme->dirs;
l = 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)
{
if (dir->type == ICON_THEME_DIR_SCALABLE)
{
/* don't pick scalable if we already found
* a matching non-scalable dir
*/
if (!match)
{
min_dir = dir;
break;
}
}
else
{
/* for a matching non-scalable dir keep
* going and look for a closer match
*/
difference = abs (size - dir->size);
if (!match || difference < min_difference)
{
match = TRUE;
min_difference = difference;
min_dir = dir;
}
if (difference == 0)
break;
}
}
if (!match)
{
if (!has_larger)
{
if (difference < min_difference || smaller)
{
min_difference = difference;
min_dir = dir;
has_larger = smaller;
}
}
else
{
if (difference < min_difference && smaller)
{
min_difference = difference;
min_dir = dir;
}
}
}
}
l = l->next;
if (l == NULL && dirs == builtin_dirs)
{
dirs = theme->dirs;
l = dirs;
}
}
if (min_dir)
{
GtkIconInfo *icon_info = icon_info_new ();
gboolean has_icon_file = FALSE;
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);
if (min_dir->dir)
{
file = g_strconcat (icon_name, string_from_suffix (suffix), NULL);
icon_info->filename = g_build_filename (min_dir->dir, file, NULL);
icon_info->icon_file = g_file_new_for_path (icon_info->filename);
g_free (file);
}
else
{
icon_info->filename = NULL;
icon_info->icon_file = NULL;
}
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_index);
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_index);
}
icon_info->dir_type = min_dir->type;
icon_info->dir_size = min_dir->size;
icon_info->threshold = min_dir->threshold;
return icon_info;
}
if (closest_builtin)
return icon_info_new_builtin (closest_builtin);
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
theme_list_contexts (IconTheme *theme,
GHashTable *contexts)
{
GList *l = theme->dirs;
IconThemeDir *dir;
const char *context;
while (l != NULL)
{
dir = l->data;
context = g_quark_to_string (dir->context);
g_hash_table_replace (contexts, (gpointer) context, NULL);
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 *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);
g_key_file_free (icon_file);
return;
}
else
{
base_name = strip_suffix (name);
data = g_slice_new0 (GtkIconData);
/* takes ownership of base_name */
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_new (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;
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)))
{
char *path;
char *base_name;
IconSuffix suffix, hash_suffix;
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 = strip_suffix (name);
hash_suffix = GPOINTER_TO_INT (g_hash_table_lookup (dir->icons, base_name));
g_hash_table_replace (icon_theme->all_icons, base_name, NULL);
/* takes ownership of base_name */
g_hash_table_replace (dir->icons, base_name, GUINT_TO_POINTER (hash_suffix| suffix));
}
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);
}
if (g_key_file_has_key (theme_file, subdir, "MaxSize", NULL))
max_size = g_key_file_get_integer (theme_file, subdir, "MaxSize", NULL);
else
max_size = size;
if (g_key_file_has_key (theme_file, subdir, "MinSize", NULL))
min_size = g_key_file_get_integer (theme_file, subdir, "MinSize", NULL);
else
min_size = size;
if (g_key_file_has_key (theme_file, subdir, "Threshold", NULL))
threshold = g_key_file_get_integer (theme_file, subdir, "Threshold", NULL);
else
threshold = 2;
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);
dir->subdir_index = _gtk_icon_cache_get_directory_index (dir->cache, dir->subdir);
}
else
{
dir->cache = NULL;
dir->subdir_index = -1;
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_slice_free (GtkIconData, icon_data);
}
/*
* GtkIconInfo
*/
G_DEFINE_BOXED_TYPE (GtkIconInfo, gtk_icon_info,
gtk_icon_info_copy,
gtk_icon_info_free)
static GtkIconInfo *
icon_info_new (void)
{
GtkIconInfo *icon_info = g_slice_new0 (GtkIconInfo);
icon_info->scale = -1.;
icon_info->ref_count = 1;
return icon_info;
}
static GtkIconInfo *
icon_info_new_builtin (BuiltinIcon *icon)
{
GtkIconInfo *icon_info = icon_info_new ();
icon_info->cache_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)
{
g_return_val_if_fail (icon_info != NULL, NULL);
icon_info->ref_count++;
return icon_info;
}
/**
* 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);
icon_info->ref_count--;
if (icon_info->ref_count > 0)
return;
g_free (icon_info->filename);
g_clear_object (&icon_info->icon_file);
if (icon_info->loadable)
g_object_unref (icon_info->loadable);
g_slist_free_full (icon_info->emblem_infos, (GDestroyNotify) gtk_icon_info_free);
if (icon_info->pixbuf)
g_object_unref (icon_info->pixbuf);
if (icon_info->cache_pixbuf)
g_object_unref (icon_info->cache_pixbuf);
if (icon_info->symbolic_pixbuf_size)
gtk_requisition_free (icon_info->symbolic_pixbuf_size);
g_slice_free (GtkIconInfo, 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: (type filename): 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
**/
const 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: (transfer none): 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);
if (icon_info->filename)
return NULL;
return icon_info->cache_pixbuf;
}
static gboolean icon_info_ensure_scale_and_pixbuf (GtkIconInfo*, gboolean);
/* Combine the icon with all emblems, the first emblem is placed
* in the southeast corner. Scale emblems to be at most 3/4 of the
* size of the icon itself.
*/
static void
apply_emblems (GtkIconInfo *info)
{
GdkPixbuf *icon = NULL;
gint w, h, pos;
GSList *l;
if (info->emblem_infos == NULL)
return;
if (info->emblems_applied)
return;
w = gdk_pixbuf_get_width (info->pixbuf);
h = gdk_pixbuf_get_height (info->pixbuf);
for (l = info->emblem_infos, pos = 0; l; l = l->next, pos++)
{
GtkIconInfo *emblem_info = l->data;
if (icon_info_ensure_scale_and_pixbuf (emblem_info, FALSE))
{
GdkPixbuf *emblem = emblem_info->pixbuf;
gint ew, eh;
gint x = 0, y = 0; /* silence compiler */
gdouble scale;
ew = gdk_pixbuf_get_width (emblem);
eh = gdk_pixbuf_get_height (emblem);
if (ew >= w)
{
scale = 0.75;
ew = ew * 0.75;
eh = eh * 0.75;
}
else
scale = 1.0;
switch (pos % 4)
{
case 0:
x = w - ew;
y = h - eh;
break;
case 1:
x = w - ew;
y = 0;
break;
case 2:
x = 0;
y = h - eh;
break;
case 3:
x = 0;
y = 0;
break;
}
if (icon == NULL)
{
icon = gdk_pixbuf_copy (info->pixbuf);
if (icon == NULL)
break;
}
gdk_pixbuf_composite (emblem, icon, x, y, ew, eh, x, y,
scale, scale, GDK_INTERP_BILINEAR, 255);
}
}
if (icon)
{
g_object_unref (info->pixbuf);
info->pixbuf = icon;
}
info->emblems_applied = TRUE;
}
/* This function contains the complicated 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;
gboolean is_svg;
/* 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)
{
apply_emblems (icon_info);
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->icon_file && !icon_info->loadable)
icon_info->loadable = G_LOADABLE_ICON (g_file_icon_new (icon_info->icon_file));
is_svg = FALSE;
if (G_IS_FILE_ICON (icon_info->loadable))
{
GFile *file;
GFileInfo *file_info;
const gchar *content_type;
file = g_file_icon_get_file (G_FILE_ICON (icon_info->loadable));
file_info = g_file_query_info (file,
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
G_FILE_QUERY_INFO_NONE,
NULL, NULL);
if (file_info)
{
content_type = g_file_info_get_content_type (file_info);
if (content_type && strcmp (content_type, "image/svg+xml") == 0)
is_svg = TRUE;
g_object_unref (file_info);
}
}
if (is_svg)
{
GInputStream *stream;
icon_info->scale = icon_info->desired_size / 1000.;
if (scale_only)
return TRUE;
stream = g_loadable_icon_load (icon_info->loadable,
icon_info->desired_size,
NULL, NULL,
&icon_info->load_error);
if (stream)
{
icon_info->pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream,
icon_info->desired_size,
icon_info->desired_size,
TRUE,
NULL,
&icon_info->load_error);
g_object_unref (stream);
}
if (!icon_info->pixbuf)
return FALSE;
apply_emblems (icon_info);
return TRUE;
}
/* 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->forced_size)
icon_info->scale = -1;
else 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
* builtin image or by loading the file
*/
source_pixbuf = NULL;
if (icon_info->cache_pixbuf)
source_pixbuf = g_object_ref (icon_info->cache_pixbuf);
else
{
GInputStream *stream;
stream = g_loadable_icon_load (icon_info->loadable,
icon_info->desired_size,
NULL, NULL,
&icon_info->load_error);
if (stream)
{
source_pixbuf = gdk_pixbuf_new_from_stream (stream,
NULL,
&icon_info->load_error);
g_object_unref (stream);
}
}
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 = (gdouble)icon_info->desired_size / (gdouble)image_size;
else
icon_info->scale = 1.0;
if (icon_info->dir_type == ICON_THEME_DIR_UNTHEMED &&
!icon_info->forced_size)
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 needed.
*/
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);
}
apply_emblems (icon_info);
return TRUE;
}
/**
* gtk_icon_info_load_icon:
* @icon_info: a #GtkIconInfo structure from gtk_icon_theme_lookup_icon()
* @error: (allow-none): 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.). This behaviour can be changed
* by passing the %GTK_ICON_LOOKUP_FORCE_SIZE flag when obtaining
* the #GtkIconInfo. If this flag has been specified, the pixbuf
* returned by this function will be scaled to the exact size.
*
* Return value: (transfer full): 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 (error == NULL || *error == NULL, NULL);
if (!icon_info_ensure_scale_and_pixbuf (icon_info, FALSE))
{
if (icon_info->load_error)
g_propagate_error (error, icon_info->load_error);
else
g_set_error_literal (error,
GTK_ICON_THEME_ERROR,
GTK_ICON_THEME_NOT_FOUND,
_("Failed to load icon"));
return NULL;
}
return g_object_ref (icon_info->pixbuf);
}
static gchar *
gdk_color_to_css (GdkColor *color)
{
return g_strdup_printf ("rgb(%d,%d,%d)",
color->red >> 8,
color->green >> 8,
color->blue >> 8);
}
static gchar *
gdk_rgba_to_css (const GdkRGBA *color)
{
/* drop alpha for now, since librsvg does not understand rgba() */
return g_strdup_printf ("rgb(%d,%d,%d)",
(gint)(color->red * 255),
(gint)(color->green * 255),
(gint)(color->blue * 255));
}
static GdkPixbuf *
_gtk_icon_info_load_symbolic_internal (GtkIconInfo *icon_info,
const gchar *css_fg,
const gchar *css_success,
const gchar *css_warning,
const gchar *css_error,
GError **error)
{
GInputStream *stream;
GdkPixbuf *pixbuf;
gchar *data;
gchar *success, *warning, *err;
gchar *width, *height, *uri;
/* css_fg can't possibly have failed, otherwise
* that would mean we have a broken style */
g_return_val_if_fail (css_fg != NULL, NULL);
success = warning = err = NULL;
if (!css_success)
{
GdkColor success_default_color = { 0, 0x4e00, 0x9a00, 0x0600 };
success = gdk_color_to_css (&success_default_color);
}
if (!css_warning)
{
GdkColor warning_default_color = { 0, 0xf500, 0x7900, 0x3e00 };
warning = gdk_color_to_css (&warning_default_color);
}
if (!css_error)
{
GdkColor error_default_color = { 0, 0xcc00, 0x0000, 0x0000 };
err = gdk_color_to_css (&error_default_color);
}
if (!icon_info->symbolic_pixbuf_size)
{
stream = G_INPUT_STREAM (g_file_read (icon_info->icon_file, NULL, error));
if (!stream)
return NULL;
/* Fetch size from the original icon */
pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, error);
g_object_unref (stream);
if (!pixbuf)
return NULL;
icon_info->symbolic_pixbuf_size = gtk_requisition_new ();
icon_info->symbolic_pixbuf_size->width = gdk_pixbuf_get_width (pixbuf);
icon_info->symbolic_pixbuf_size->height = gdk_pixbuf_get_height (pixbuf);
g_object_unref (pixbuf);
}
width = g_strdup_printf ("%d", icon_info->symbolic_pixbuf_size->width);
height = g_strdup_printf ("%d", icon_info->symbolic_pixbuf_size->height);
uri = g_file_get_uri (icon_info->icon_file);
data = g_strconcat ("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
"<svg version=\"1.1\"\n"
" xmlns=\"http://www.w3.org/2000/svg\"\n"
" xmlns:xi=\"http://www.w3.org/2001/XInclude\"\n"
" width=\"", width, "\"\n"
" height=\"", height, "\">\n"
" <style type=\"text/css\">\n"
" rect,path {\n"
" fill: ", css_fg," !important;\n"
" }\n"
" .warning {\n"
" fill: ", css_warning ? css_warning : warning," !important;\n"
" }\n"
" .error {\n"
" fill: ", css_error ? css_error : err," !important;\n"
" }\n"
" .success {\n"
" fill: ", css_success ? css_success : success," !important;\n"
" }\n"
" </style>\n"
" <xi:include href=\"", uri, "\"/>\n"
"</svg>",
NULL);
g_free (warning);
g_free (err);
g_free (success);
g_free (width);
g_free (height);
g_free (uri);
stream = g_memory_input_stream_new_from_data (data, -1, g_free);
pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream,
icon_info->desired_size,
icon_info->desired_size,
TRUE,
NULL,
error);
g_object_unref (stream);
return pixbuf;
}
/**
* gtk_icon_info_load_symbolic:
* @icon_info: a #GtkIconInfo
* @fg: a #GdkRGBA representing the foreground color of the icon
* @success_color: (allow-none): a #GdkRGBA representing the warning color
* of the icon or %NULL to use the default color
* @warning_color: (allow-none): a #GdkRGBA representing the warning color
* of the icon or %NULL to use the default color
* @error_color: (allow-none): a #GdkRGBA representing the error color
* of the icon or %NULL to use the default color (allow-none)
* @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
* loaded icon was a symbolic one and whether the @fg color was
* applied to it.
* @error: (allow-none): location to store error information on failure,
* or %NULL.
*
* Loads an icon, modifying it to match the system colours for the foreground,
* success, warning and error colors provided. If the icon is not a symbolic
* one, the function will return the result from gtk_icon_info_load_icon().
*
* This allows loading symbolic icons that will match the system theme.
*
* Unless you are implementing a widget, you will want to use
* g_themed_icon_new_with_default_fallbacks() to load the icon.
*
* As implementation details, the icon loaded needs to be of SVG type,
* contain the "symbolic" term as the last component of the icon name,
* and use the 'fg', 'success', 'warning' and 'error' CSS styles in the
* SVG file itself.
*
* See the <ulink url="http://www.freedesktop.org/wiki/SymbolicIcons">Symbolic Icons spec</ulink>
* for more information about symbolic icons.
*
* Return value: (transfer full): a #GdkPixbuf representing the loaded icon
*
* Since: 3.0
**/
GdkPixbuf *
gtk_icon_info_load_symbolic (GtkIconInfo *icon_info,
const GdkRGBA *fg,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color,
gboolean *was_symbolic,
GError **error)
{
GdkPixbuf *pixbuf;
gchar *css_fg;
gchar *css_success;
gchar *css_warning;
gchar *css_error;
gchar *icon_uri;
gboolean is_symbolic;
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (fg != NULL, NULL);
icon_uri = NULL;
if (icon_info->icon_file)
icon_uri = g_file_get_uri (icon_info->icon_file);
is_symbolic = (icon_uri != NULL) && (g_str_has_suffix (icon_uri, "-symbolic.svg"));
g_free (icon_uri);
if (was_symbolic)
*was_symbolic = is_symbolic;
if (!is_symbolic)
return gtk_icon_info_load_icon (icon_info, error);
css_fg = gdk_rgba_to_css (fg);
css_success = css_warning = css_error = NULL;
if (warning_color)
css_warning = gdk_rgba_to_css (warning_color);
if (error_color)
css_error = gdk_rgba_to_css (error_color);
if (success_color)
css_success = gdk_rgba_to_css (success_color);
pixbuf = _gtk_icon_info_load_symbolic_internal (icon_info,
css_fg, css_success,
css_warning, css_error,
error);
g_free (css_fg);
g_free (css_warning);
g_free (css_success);
g_free (css_error);
return pixbuf;
}
/**
* gtk_icon_info_load_symbolic_for_context:
* @icon_info: a #GtkIconInfo
* @context: a #GtkStyleContext
* @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
* loaded icon was a symbolic one and whether the @fg color was
* applied to it.
* @error: (allow-none): location to store error information on failure,
* or %NULL.
*
* Loads an icon, modifying it to match the system colors for the foreground,
* success, warning and error colors provided. If the icon is not a symbolic
* one, the function will return the result from gtk_icon_info_load_icon().
* This function uses the regular foreground color and the symbolic colors
* with the names "success_color", "warning_color" and "error_color" from
* the context.
*
* This allows loading symbolic icons that will match the system theme.
*
* See gtk_icon_info_load_symbolic() for more details.
*
* Return value: (transfer full): a #GdkPixbuf representing the loaded icon
*
* Since: 3.0
**/
GdkPixbuf *
gtk_icon_info_load_symbolic_for_context (GtkIconInfo *icon_info,
GtkStyleContext *context,
gboolean *was_symbolic,
GError **error)
{
GdkPixbuf *pixbuf;
GdkRGBA *color = NULL;
GdkRGBA rgba;
gchar *css_fg = NULL, *css_success;
gchar *css_warning, *css_error;
GtkStateFlags state;
gchar *icon_uri;
gboolean is_symbolic;
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (context != NULL, NULL);
icon_uri = NULL;
if (icon_info->icon_file)
icon_uri = g_file_get_uri (icon_info->icon_file);
is_symbolic = (icon_uri != NULL) && (g_str_has_suffix (icon_uri, "-symbolic.svg"));
g_free (icon_uri);
if (was_symbolic)
*was_symbolic = is_symbolic;
if (!is_symbolic)
return gtk_icon_info_load_icon (icon_info, error);
state = gtk_style_context_get_state (context);
gtk_style_context_get (context, state, "color", &color, NULL);
if (color)
{
css_fg = gdk_rgba_to_css (color);
gdk_rgba_free (color);
}
css_success = css_warning = css_error = NULL;
if (gtk_style_context_lookup_color (context, "success_color", &rgba))
css_success = gdk_rgba_to_css (&rgba);
if (gtk_style_context_lookup_color (context, "warning_color", &rgba))
css_warning = gdk_rgba_to_css (&rgba);
if (gtk_style_context_lookup_color (context, "error_color", &rgba))
css_error = gdk_rgba_to_css (&rgba);
pixbuf = _gtk_icon_info_load_symbolic_internal (icon_info,
css_fg, css_success,
css_warning, css_error,
error);
g_free (css_fg);
g_free (css_success);
g_free (css_warning);
g_free (css_error);
return pixbuf;
}
/**
* gtk_icon_info_load_symbolic_for_style:
* @icon_info: a #GtkIconInfo
* @style: a #GtkStyle to take the colors from
* @state: the widget state to use for colors
* @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
* loaded icon was a symbolic one and whether the @fg color was
* applied to it.
* @error: (allow-none): location to store error information on failure,
* or %NULL.
*
* Loads an icon, modifying it to match the system colours for the foreground,
* success, warning and error colors provided. If the icon is not a symbolic
* one, the function will return the result from gtk_icon_info_load_icon().
*
* This allows loading symbolic icons that will match the system theme.
*
* See gtk_icon_info_load_symbolic() for more details.
*
* Return value: (transfer full): a #GdkPixbuf representing the loaded icon
*
* Since: 3.0
*
* Deprecated: 3.0: Use gtk_icon_info_load_symbolic_for_context() instead
**/
GdkPixbuf *
gtk_icon_info_load_symbolic_for_style (GtkIconInfo *icon_info,
GtkStyle *style,
GtkStateType state,
gboolean *was_symbolic,
GError **error)
{
GdkPixbuf *pixbuf;
GdkColor success_color;
GdkColor warning_color;
GdkColor error_color;
GdkColor *fg;
gchar *css_fg, *css_success;
gchar *css_warning, *css_error;
gchar *icon_uri;
gboolean is_symbolic;
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (style != NULL, NULL);
icon_uri = NULL;
if (icon_info->icon_file)
icon_uri = g_file_get_uri (icon_info->icon_file);
is_symbolic = (icon_uri != NULL) && (g_str_has_suffix (icon_uri, "-symbolic.svg"));
g_free (icon_uri);
if (was_symbolic)
*was_symbolic = is_symbolic;
if (!is_symbolic)
return gtk_icon_info_load_icon (icon_info, error);
fg = &style->fg[state];
css_fg = gdk_color_to_css (fg);
css_success = css_warning = css_error = NULL;
if (gtk_style_lookup_color (style, "success_color", &success_color))
css_success = gdk_color_to_css (&success_color);
if (gtk_style_lookup_color (style, "warning_color", &warning_color))
css_warning = gdk_color_to_css (&warning_color);
if (gtk_style_lookup_color (style, "error_color", &error_color))
css_error = gdk_color_to_css (&error_color);
pixbuf = _gtk_icon_info_load_symbolic_internal (icon_info,
css_fg, css_success,
css_warning, css_error,
error);
g_free (css_fg);
g_free (css_success);
g_free (css_warning);
g_free (css_error);
return 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: (out): #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: (allow-none) (array length=n_points) (out): location to store pointer to an array of points, or %NULL
* free the array of points with g_free().
* @n_points: (allow-none): 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
**/
const 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;
}
void
_gtk_icon_theme_check_reload (GdkDisplay *display)
{
gint n_screens, i;
GdkScreen *screen;
GtkIconTheme *icon_theme;
n_screens = gdk_display_get_n_screens (display);
for (i = 0; i < n_screens; i++)
{
screen = gdk_display_get_screen (display, i);
icon_theme = g_object_get_data (G_OBJECT (screen), "gtk-icon-theme");
if (icon_theme)
{
icon_theme->priv->check_reload = TRUE;
ensure_valid_themes (icon_theme);
icon_theme->priv->check_reload = FALSE;
}
}
}
/**
* gtk_icon_theme_lookup_by_gicon:
* @icon_theme: a #GtkIconTheme
* @icon: the #GIcon to look up
* @size: desired icon size
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up an 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().
*
* 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: 2.14
*/
GtkIconInfo *
gtk_icon_theme_lookup_by_gicon (GtkIconTheme *icon_theme,
GIcon *icon,
gint size,
GtkIconLookupFlags flags)
{
GtkIconInfo *info;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
g_return_val_if_fail (G_IS_ICON (icon), NULL);
if (G_IS_LOADABLE_ICON (icon))
{
info = icon_info_new ();
info->loadable = G_LOADABLE_ICON (g_object_ref (icon));
if (G_IS_FILE_ICON (icon))
{
GFile *file = g_file_icon_get_file (G_FILE_ICON (icon));
if (file != NULL)
{
info->icon_file = g_object_ref (file);
info->filename = g_file_get_path (file);
}
}
info->dir_type = ICON_THEME_DIR_UNTHEMED;
info->dir_size = size;
info->desired_size = size;
info->threshold = 2;
info->forced_size = (flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0;
return info;
}
else if (G_IS_THEMED_ICON (icon))
{
const gchar **names;
names = (const gchar **)g_themed_icon_get_names (G_THEMED_ICON (icon));
info = gtk_icon_theme_choose_icon (icon_theme, names, size, flags);
return info;
}
else if (G_IS_EMBLEMED_ICON (icon))
{
GIcon *base, *emblem;
GList *list, *l;
GtkIconInfo *emblem_info;
if (GTK_IS_NUMERABLE_ICON (icon))
_gtk_numerable_icon_set_background_icon_size (GTK_NUMERABLE_ICON (icon), size / 2);
base = g_emblemed_icon_get_icon (G_EMBLEMED_ICON (icon));
info = gtk_icon_theme_lookup_by_gicon (icon_theme, base, size, flags);
if (info)
{
list = g_emblemed_icon_get_emblems (G_EMBLEMED_ICON (icon));
for (l = list; l; l = l->next)
{
emblem = g_emblem_get_icon (G_EMBLEM (l->data));
/* always force size for emblems */
emblem_info = gtk_icon_theme_lookup_by_gicon (icon_theme, emblem, size / 2, flags | GTK_ICON_LOOKUP_FORCE_SIZE);
if (emblem_info)
info->emblem_infos = g_slist_prepend (info->emblem_infos, emblem_info);
}
}
return info;
}
else if (GDK_IS_PIXBUF (icon))
{
GdkPixbuf *pixbuf;
pixbuf = GDK_PIXBUF (icon);
if ((flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0)
{
gint width, height, max;
gdouble scale;
GdkPixbuf *scaled;
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
max = MAX (width, height);
scale = (gdouble) size / (gdouble) max;
scaled = gdk_pixbuf_scale_simple (pixbuf,
0.5 + width * scale,
0.5 + height * scale,
GDK_INTERP_BILINEAR);
info = gtk_icon_info_new_for_pixbuf (icon_theme, scaled);
g_object_unref (scaled);
}
else
{
info = gtk_icon_info_new_for_pixbuf (icon_theme, pixbuf);
}
return info;
}
return NULL;
}
/**
* gtk_icon_info_new_for_pixbuf:
* @icon_theme: a #GtkIconTheme
* @pixbuf: the pixbuf to wrap in a #GtkIconInfo
*
* Creates a #GtkIconInfo for a #GdkPixbuf.
*
* Returns: a #GtkIconInfo
*
* Since: 2.14
*/
GtkIconInfo *
gtk_icon_info_new_for_pixbuf (GtkIconTheme *icon_theme,
GdkPixbuf *pixbuf)
{
GtkIconInfo *info;
g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
info = icon_info_new ();
info->pixbuf = g_object_ref (pixbuf);
info->scale = 1.0;
info->dir_type = ICON_THEME_DIR_UNTHEMED;
return info;
}
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