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gtk2/gtk/gtkicontheme.c
Matthias Clasen 1dd55ed600 Drop gtk_icon_info_new_for_pixbuf 
It is better to keep icon infos as something you
only get from the icon theme.
2019-10-18 08:53:23 -05:00

4396 lines
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/* GtkIconTheme - a loader for icon themes
* gtk-icon-theme.c Copyright (C) 2002, 2003 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, 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 <math.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_LEAN_AND_MEAN
#include <windows.h>
#include <shellapi.h>
#include "win32/gdkwin32.h"
#endif /* G_OS_WIN32 */
#include "gtkiconthemeprivate.h"
#include "gtkcsspalettevalueprivate.h"
#include "gtkcssrgbavalueprivate.h"
#include "gtkdebug.h"
#include "gtkiconcacheprivate.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtksettingsprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkprivate.h"
#include "gdkpixbufutilsprivate.h"
#include "gdk/gdktextureprivate.h"
/* this is in case round() is not provided by the compiler,
* such as in the case of C89 compilers, like MSVC
*/
#include "fallback-c89.c"
/**
* 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 “icon theme” is selected
* by the user. The operation of icon themes on Linux and Unix
* follows the [Icon Theme Specification](http://www.freedesktop.org/Standards/icon-theme-spec)
* There is a fallback icon theme, named `hicolor`, where applications
* should install their icons, but additional icon themes can be installed
* as operating system vendors and users choose.
*
* In many cases, named themes are used indirectly, via #GtkImage
* 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 it’s much more
* efficient to use the standard icon theme for the #GdkDisplay
* so that the icon information is shared with other people
* looking up icons.
* |[<!-- language="C" -->
* GError *error = NULL;
* GtkIconTheme *icon_theme;
* GdkPaintable *paintable;
*
* icon_theme = gtk_icon_theme_get_default ();
* paintable = gtk_icon_theme_load_icon (icon_theme,
* "my-icon-name", // icon name
* 48, // icon size
* 0, // flags
* &error);
* if (!paintable)
* {
* g_warning ("Couldn’t load icon: %s", error->message);
* g_error_free (error);
* }
* else
* {
* // Use the icon
* g_object_unref (paintable);
* }
* ]|
*/
#define FALLBACK_ICON_THEME "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,
ICON_SUFFIX_SYMBOLIC_PNG = 1 << 4
} IconSuffix;
#if 0
#define DEBUG_CACHE(args) g_print args
#else
#define DEBUG_CACHE(args)
#endif
#define LRU_CACHE_SIZE 100
#define MAX_LRU_TEXTURE_SIZE 128
typedef struct _GtkIconInfoClass GtkIconInfoClass;
typedef struct _GtkIconThemeClass GtkIconThemeClass;
/**
* GtkIconTheme:
*
* Acts as a database of information about an icon theme.
* Normally, you retrieve the icon theme for a particular
* display using gtk_icon_theme_get_for_display() and it
* will contain information about current icon theme for
* that display, but you can also create a new #GtkIconTheme
* object and set the icon theme name explicitly using
* gtk_icon_theme_set_custom_theme().
*/
struct _GtkIconTheme
{
GObject parent_instance;
GHashTable *info_cache;
GtkIconInfo *lru_cache[LRU_CACHE_SIZE];
int lru_cache_next;
gchar *current_theme;
gchar **search_path;
gint search_path_len;
GList *resource_paths;
guint custom_theme : 1;
guint is_display_singleton : 1;
guint pixbuf_supports_svg : 1;
guint themes_valid : 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;
/* GdkDisplay for the icon theme (may be NULL) */
GdkDisplay *display;
/* time when we last stat:ed for theme changes */
glong last_stat_time;
GList *dir_mtimes;
gulong theme_changed_idle;
};
struct _GtkIconThemeClass
{
GObjectClass parent_class;
void (* changed) (GtkIconTheme *self);
};
typedef struct {
gchar **icon_names;
gint size;
gint scale;
GtkIconLookupFlags flags;
} IconInfoKey;
struct _GtkIconInfoClass
{
GObjectClass parent_class;
};
/**
* GtkIconInfo:
*
* Contains information found when looking up an icon in
* an icon theme.
*/
struct _GtkIconInfo
{
GObject parent_instance;
/* Information about the source
*/
IconInfoKey key;
GtkIconTheme *in_cache;
gchar *filename;
GLoadableIcon *loadable;
/* Cache pixbuf (if there is any) */
GdkPixbuf *cache_pixbuf;
/* Information about the directory where
* the source was found
*/
IconThemeDirType dir_type;
gint dir_size;
gint dir_scale;
gint min_size;
gint max_size;
/* Parameters influencing the scaled icon
*/
gint desired_size;
gint desired_scale;
guint forced_size : 1;
guint is_svg : 1;
guint is_resource : 1;
/* Cached information if we go ahead and try to load
* the icon.
*/
GdkTexture *texture;
GError *load_error;
gdouble unscaled_scale;
gdouble scale;
gint symbolic_width;
gint symbolic_height;
};
typedef struct
{
gchar *name;
gchar *display_name;
gchar *comment;
/* In search order */
GList *dirs;
} IconTheme;
typedef struct
{
IconThemeDirType type;
GQuark context;
gint size;
gint min_size;
gint max_size;
gint threshold;
gint scale;
gboolean is_resource;
gchar *dir;
gchar *subdir;
gint subdir_index;
GtkIconCache *cache;
GHashTable *icons;
} IconThemeDir;
typedef struct
{
gchar *svg_filename;
gchar *no_svg_filename;
gboolean is_resource;
} UnthemedIcon;
typedef struct
{
gchar *dir;
time_t mtime;
GtkIconCache *cache;
gboolean exists;
} 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 gchar *icon_name,
gint size,
gint scale,
gboolean allow_svg);
static void theme_list_icons (IconTheme *theme,
GHashTable *icons,
GQuark context);
static gboolean theme_has_icon (IconTheme *theme,
const gchar *icon_name);
static void theme_subdir_load (GtkIconTheme *self,
IconTheme *theme,
GKeyFile *theme_file,
gchar *subdir);
static void do_theme_change (GtkIconTheme *self);
static void blow_themes (GtkIconTheme *self);
static gboolean rescan_themes (GtkIconTheme *self);
static IconSuffix theme_dir_get_icon_suffix (IconThemeDir *dir,
const gchar *icon_name);
static GtkIconInfo *icon_info_new (IconThemeDirType type,
gint dir_size,
gint dir_scale);
static IconSuffix suffix_from_name (const gchar *name);
static gboolean icon_info_ensure_scale_and_texture (GtkIconInfo* icon_info);
static guint signal_changed = 0;
static guint
icon_info_key_hash (gconstpointer _key)
{
const IconInfoKey *key = _key;
guint h = 0;
int i;
for (i = 0; key->icon_names[i] != NULL; i++)
h ^= g_str_hash (key->icon_names[i]);
h ^= key->size * 0x10001;
h ^= key->scale * 0x1000010;
h ^= key->flags * 0x100000100;
return h;
}
static gboolean
icon_info_key_equal (gconstpointer _a,
gconstpointer _b)
{
const IconInfoKey *a = _a;
const IconInfoKey *b = _b;
int i;
if (a->size != b->size)
return FALSE;
if (a->scale != b->scale)
return FALSE;
if (a->flags != b->flags)
return FALSE;
for (i = 0;
a->icon_names[i] != NULL &&
b->icon_names[i] != NULL; i++)
{
if (strcmp (a->icon_names[i], b->icon_names[i]) != 0)
return FALSE;
}
return a->icon_names[i] == NULL && b->icon_names[i] == NULL;
}
G_DEFINE_TYPE (GtkIconTheme, gtk_icon_theme, G_TYPE_OBJECT)
static void
add_to_lru_cache (GtkIconInfo *info)
{
GtkIconTheme *self = info->in_cache;
if (!self)
return;
if (info->texture &&
info->texture->width <= MAX_LRU_TEXTURE_SIZE &&
info->texture->height <= MAX_LRU_TEXTURE_SIZE)
{
g_set_object (&self->lru_cache[self->lru_cache_next], info);
self->lru_cache_next = (self->lru_cache_next + 1) % LRU_CACHE_SIZE;
}
}
static void
clear_lru_cache (GtkIconTheme *self)
{
int i;
for (i = 0; i < LRU_CACHE_SIZE; i ++)
g_clear_object (&self->lru_cache[i]);
}
/**
* 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_display() rather than creating
* a new icon theme object for scratch.
*
* Returns: the newly created #GtkIconTheme object.
*/
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 display. See
* gtk_icon_theme_get_for_display().
*
* Returns: (transfer none): A unique #GtkIconTheme associated with
* the default display. This icon theme is associated with
* the display and can be used as long as the display
* is open. Do not ref or unref it.
*/
GtkIconTheme *
gtk_icon_theme_get_default (void)
{
return gtk_icon_theme_get_for_display (gdk_display_get_default ());
}
/**
* gtk_icon_theme_get_for_display:
* @display: a #GdkDisplay
*
* Gets the icon theme object associated with @display; if this
* function has not previously been called for the given
* display, a new icon theme object will be created and
* associated with the display. 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 display yourself; by using this function
* a single icon theme object will be shared between users.
*
* Returns: (transfer none): A unique #GtkIconTheme associated with
* the given display. This icon theme is associated with
* the display and can be used as long as the display
* is open. Do not ref or unref it.
*/
GtkIconTheme *
gtk_icon_theme_get_for_display (GdkDisplay *display)
{
GtkIconTheme *self;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
self = g_object_get_data (G_OBJECT (display), "gtk-icon-theme");
if (!self)
{
self = gtk_icon_theme_new ();
gtk_icon_theme_set_display (self, display);
self->is_display_singleton = TRUE;
g_object_set_data (G_OBJECT (display), I_("gtk-icon-theme"), self);
}
return self;
}
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:
* @self: 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,
NULL,
G_TYPE_NONE, 0);
}
/* Callback when the display that the icon theme is attached
* to is closed; unset the display, and if it’s the unique theme
* for the display, drop the reference
*/
static void
display_closed (GdkDisplay *display,
gboolean is_error,
GtkIconTheme *self)
{
gboolean was_display_singleton = self->is_display_singleton;
if (was_display_singleton)
{
g_object_set_data (G_OBJECT (display), I_("gtk-icon-theme"), NULL);
self->is_display_singleton = FALSE;
}
gtk_icon_theme_set_display (self, NULL);
if (was_display_singleton)
{
g_object_unref (self);
}
}
static void
update_current_theme (GtkIconTheme *self)
{
#define theme_changed(_old, _new) \
((_old && !_new) || (!_old && _new) || \
(_old && _new && strcmp (_old, _new) != 0))
if (!self->custom_theme)
{
gchar *theme = NULL;
gboolean changed = FALSE;
if (self->display)
{
GtkSettings *settings = gtk_settings_get_for_display (self->display);
g_object_get (settings, "gtk-icon-theme-name", &theme, NULL);
}
if (theme_changed (self->current_theme, theme))
{
g_free (self->current_theme);
self->current_theme = theme;
changed = TRUE;
}
else
g_free (theme);
if (changed)
do_theme_change (self);
}
#undef theme_changed
}
/* Callback when the icon theme GtkSetting changes
*/
static void
theme_changed (GtkSettings *settings,
GParamSpec *pspec,
GtkIconTheme *self)
{
update_current_theme (self);
}
static void
unset_display (GtkIconTheme *self)
{
GtkSettings *settings;
if (self->display)
{
settings = gtk_settings_get_for_display (self->display);
g_signal_handlers_disconnect_by_func (self->display,
(gpointer) display_closed,
self);
g_signal_handlers_disconnect_by_func (settings,
(gpointer) theme_changed,
self);
self->display = NULL;
}
}
/**
* gtk_icon_theme_set_display:
* @self: a #GtkIconTheme
* @display: a #GdkDisplay
*
* Sets the display for an icon theme; the display is used
* to track the user’s currently configured icon theme,
* which might be different for different displays.
*/
void
gtk_icon_theme_set_display (GtkIconTheme *self,
GdkDisplay *display)
{
GtkSettings *settings;
g_return_if_fail (GTK_ICON_THEME (self));
g_return_if_fail (display == NULL || GDK_IS_DISPLAY (display));
unset_display (self);
if (display)
{
settings = gtk_settings_get_for_display (display);
self->display = display;
g_signal_connect (display, "closed",
G_CALLBACK (display_closed), self);
g_signal_connect (settings, "notify::gtk-icon-theme-name",
G_CALLBACK (theme_changed), self);
}
update_current_theme (self);
}
/* 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;
}
/* The icon info was removed from the icon_info_hash hash table */
static void
icon_info_uncached (GtkIconInfo *icon_info)
{
DEBUG_CACHE (("removing %p (%s %d 0x%x) from cache (icon_them: %p) (cache size %d)\n",
icon_info,
g_strjoinv (",", icon_info->key.icon_names),
icon_info->key.size, icon_info->key.flags,
self,
icon_theme != NULL ? g_hash_table_size (self->info_cache) : 0));
icon_info->in_cache = NULL;
}
static void
gtk_icon_theme_init (GtkIconTheme *self)
{
const gchar * const *xdg_data_dirs;
int i, j;
self->info_cache = g_hash_table_new_full (icon_info_key_hash, icon_info_key_equal, NULL,
(GDestroyNotify)icon_info_uncached);
self->custom_theme = FALSE;
xdg_data_dirs = g_get_system_data_dirs ();
for (i = 0; xdg_data_dirs[i]; i++) ;
self->search_path_len = 2 * i + 2;
self->search_path = g_new (char *, self->search_path_len);
i = 0;
self->search_path[i++] = g_build_filename (g_get_user_data_dir (), "icons", NULL);
self->search_path[i++] = g_build_filename (g_get_home_dir (), ".icons", NULL);
for (j = 0; xdg_data_dirs[j]; j++)
self->search_path[i++] = g_build_filename (xdg_data_dirs[j], "icons", NULL);
for (j = 0; xdg_data_dirs[j]; j++)
self->search_path[i++] = g_build_filename (xdg_data_dirs[j], "pixmaps", NULL);
self->resource_paths = g_list_append (NULL, g_strdup ("/org/gtk/libgtk/icons/"));
self->themes_valid = FALSE;
self->themes = NULL;
self->unthemed_icons = NULL;
self->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
theme_changed_idle (gpointer user_data)
{
GtkIconTheme *self;
self = GTK_ICON_THEME (user_data);
g_signal_emit (self, signal_changed, 0);
if (self->display && self->is_display_singleton)
gtk_style_context_reset_widgets (self->display);
self->theme_changed_idle = 0;
return FALSE;
}
static void
queue_theme_changed (GtkIconTheme *self)
{
if (!self->theme_changed_idle)
{
self->theme_changed_idle = g_idle_add_full (GTK_PRIORITY_RESIZE - 2,
theme_changed_idle,
self,
NULL);
g_source_set_name_by_id (self->theme_changed_idle, "[gtk] theme_changed_idle");
}
}
static void
do_theme_change (GtkIconTheme *self)
{
g_hash_table_remove_all (self->info_cache);
clear_lru_cache (self);
if (!self->themes_valid)
return;
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("change to icon theme \"%s\"", self->current_theme));
blow_themes (self);
queue_theme_changed (self);
}
static void
blow_themes (GtkIconTheme *self)
{
if (self->themes_valid)
{
g_list_free_full (self->themes, (GDestroyNotify) theme_destroy);
g_list_free_full (self->dir_mtimes, (GDestroyNotify) free_dir_mtime);
g_hash_table_destroy (self->unthemed_icons);
}
self->themes = NULL;
self->unthemed_icons = NULL;
self->dir_mtimes = NULL;
self->themes_valid = FALSE;
}
static void
gtk_icon_theme_finalize (GObject *object)
{
GtkIconTheme *self = GTK_ICON_THEME (object);
int i;
g_hash_table_destroy (self->info_cache);
if (self->theme_changed_idle)
g_source_remove (self->theme_changed_idle);
unset_display (self);
g_free (self->current_theme);
for (i = 0; i < self->search_path_len; i++)
g_free (self->search_path[i]);
g_free (self->search_path);
g_list_free_full (self->resource_paths, g_free);
blow_themes (self);
clear_lru_cache (self);
G_OBJECT_CLASS (gtk_icon_theme_parent_class)->finalize (object);
}
/**
* gtk_icon_theme_set_search_path:
* @self: 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 containing an index.theme file. (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 fallback icon theme, which is called hicolor,
* rather than directly on the icon path.)
*/
void
gtk_icon_theme_set_search_path (GtkIconTheme *self,
const gchar *path[],
gint n_elements)
{
gint i;
g_return_if_fail (GTK_IS_ICON_THEME (self));
for (i = 0; i < self->search_path_len; i++)
g_free (self->search_path[i]);
g_free (self->search_path);
self->search_path = g_new (gchar *, n_elements);
self->search_path_len = n_elements;
for (i = 0; i < self->search_path_len; i++)
self->search_path[i] = g_strdup (path[i]);
do_theme_change (self);
}
/**
* gtk_icon_theme_get_search_path:
* @self: 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().
*/
void
gtk_icon_theme_get_search_path (GtkIconTheme *self,
gchar **path[],
gint *n_elements)
{
gint i;
g_return_if_fail (GTK_IS_ICON_THEME (self));
if (n_elements)
*n_elements = self->search_path_len;
if (path)
{
*path = g_new (gchar *, self->search_path_len + 1);
for (i = 0; i < self->search_path_len; i++)
(*path)[i] = g_strdup (self->search_path[i]);
(*path)[i] = NULL;
}
}
/**
* gtk_icon_theme_append_search_path:
* @self: 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().
*/
void
gtk_icon_theme_append_search_path (GtkIconTheme *self,
const gchar *path)
{
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (path != NULL);
self->search_path_len++;
self->search_path = g_renew (gchar *, self->search_path, self->search_path_len);
self->search_path[self->search_path_len-1] = g_strdup (path);
do_theme_change (self);
}
/**
* gtk_icon_theme_prepend_search_path:
* @self: 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().
*/
void
gtk_icon_theme_prepend_search_path (GtkIconTheme *self,
const gchar *path)
{
gint i;
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (path != NULL);
self->search_path_len++;
self->search_path = g_renew (gchar *, self->search_path, self->search_path_len);
for (i = self->search_path_len - 1; i > 0; i--)
self->search_path[i] = self->search_path[i - 1];
self->search_path[0] = g_strdup (path);
do_theme_change (self);
}
/**
* gtk_icon_theme_add_resource_path:
* @self: a #GtkIconTheme
* @path: a resource path
*
* Adds a resource path that will be looked at when looking
* for icons, similar to search paths.
*
* This function should be used to make application-specific icons
* available as part of the icon theme.
*
* The resources are considered as part of the hicolor icon theme
* and must be located in subdirectories that are defined in the
* hicolor icon theme, such as `@path/16x16/actions/run.png`.
* Icons that are directly placed in the resource path instead
* of a subdirectory are also considered as ultimate fallback.
*/
void
gtk_icon_theme_add_resource_path (GtkIconTheme *self,
const gchar *path)
{
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (path != NULL);
self->resource_paths = g_list_append (self->resource_paths, g_strdup (path));
do_theme_change (self);
}
/**
* gtk_icon_theme_set_custom_theme:
* @self: 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_display().
*/
void
gtk_icon_theme_set_custom_theme (GtkIconTheme *self,
const gchar *theme_name)
{
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (!self->is_display_singleton);
if (theme_name != NULL)
{
self->custom_theme = TRUE;
if (!self->current_theme || strcmp (theme_name, self->current_theme) != 0)
{
g_free (self->current_theme);
self->current_theme = g_strdup (theme_name);
do_theme_change (self);
}
}
else
{
if (self->custom_theme)
{
self->custom_theme = FALSE;
update_current_theme (self);
}
}
}
static const gchar builtin_hicolor_index[] =
"[Icon Theme]\n"
"Name=Hicolor\n"
"Hidden=True\n"
"Directories=16x16/actions,16x16/status,22x22/actions,24x24/actions,24x24/status,32x32/actions,32x32/status,48x48/status,64x64/actions\n"
"[16x16/actions]\n"
"Size=16\n"
"Type=Threshold\n"
"[16x16/status]\n"
"Size=16\n"
"Type=Threshold\n"
"[22x22/actions]\n"
"Size=22\n"
"Type=Threshold\n"
"[24x24/actions]\n"
"Size=24\n"
"Type=Threshold\n"
"[24x24/status]\n"
"Size=24\n"
"Type=Threshold\n"
"[32x32/actions]\n"
"Size=32\n"
"Type=Threshold\n"
"[32x32/status]\n"
"Size=32\n"
"Type=Threshold\n"
"[48x48/status]\n"
"Size=48\n"
"Type=Threshold\n"
"[64x64/actions]\n"
"Size=64\n"
"Type=Threshold\n";
static void
insert_theme (GtkIconTheme *self,
const gchar *theme_name)
{
gint i;
GList *l;
gchar **dirs;
gchar **scaled_dirs;
gchar **themes;
IconTheme *theme = NULL;
gchar *path;
GKeyFile *theme_file;
GError *error = NULL;
IconThemeDirMtime *dir_mtime;
GStatBuf stat_buf;
for (l = self->themes; l != NULL; l = l->next)
{
theme = l->data;
if (strcmp (theme->name, theme_name) == 0)
return;
}
for (i = 0; i < self->search_path_len; i++)
{
path = g_build_filename (self->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;
dir_mtime->exists = TRUE;
} else {
dir_mtime->mtime = 0;
dir_mtime->exists = FALSE;
}
self->dir_mtimes = g_list_prepend (self->dir_mtimes, dir_mtime);
}
theme_file = NULL;
for (i = 0; i < self->search_path_len && !theme_file; i++)
{
path = g_build_filename (self->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, ',');
if (!g_key_file_load_from_file (theme_file, path, 0, &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, FALLBACK_ICON_THEME) == 0)
{
theme = g_new0 (IconTheme, 1);
theme->name = g_strdup (theme_name);
self->themes = g_list_prepend (self->themes, theme);
if (!theme_file)
{
theme_file = g_key_file_new ();
g_key_file_set_list_separator (theme_file, ',');
g_key_file_load_from_data (theme_file, builtin_hicolor_index, -1, 0, NULL);
}
}
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", 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", theme_name);
self->themes = g_list_remove (self->themes, theme);
g_free (theme->name);
g_free (theme->display_name);
g_free (theme);
g_key_file_free (theme_file);
return;
}
scaled_dirs = g_key_file_get_string_list (theme_file, "Icon Theme", "ScaledDirectories", NULL, NULL);
theme->comment =
g_key_file_get_locale_string (theme_file,
"Icon Theme", "Comment",
NULL, NULL);
theme->dirs = NULL;
for (i = 0; dirs[i] != NULL; i++)
theme_subdir_load (self, theme, theme_file, dirs[i]);
if (scaled_dirs)
{
for (i = 0; scaled_dirs[i] != NULL; i++)
theme_subdir_load (self, theme, theme_file, scaled_dirs[i]);
}
g_strfreev (dirs);
g_strfreev (scaled_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 (self, 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 gchar *
strip_suffix (const gchar *filename)
{
const gchar *dot;
if (g_str_has_suffix (filename, ".symbolic.png"))
return g_strndup (filename, strlen(filename)-13);
dot = strrchr (filename, '.');
if (dot == NULL)
return g_strdup (filename);
return g_strndup (filename, dot - filename);
}
static void
add_unthemed_icon (GtkIconTheme *self,
const gchar *dir,
const gchar *file,
gboolean is_resource)
{
IconSuffix new_suffix, old_suffix;
gchar *abs_file;
gchar *base_name;
UnthemedIcon *unthemed_icon;
new_suffix = suffix_from_name (file);
if (new_suffix == ICON_SUFFIX_NONE)
return;
abs_file = g_build_filename (dir, file, NULL);
base_name = strip_suffix (file);
unthemed_icon = g_hash_table_lookup (self->unthemed_icons, base_name);
if (unthemed_icon)
{
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);
unthemed_icon->is_resource = is_resource;
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 (self->unthemed_icons, base_name, unthemed_icon);
}
}
static void
load_themes (GtkIconTheme *self)
{
GDir *gdir;
gint base;
gchar *dir;
const gchar *file;
GTimeVal tv;
IconThemeDirMtime *dir_mtime;
GStatBuf stat_buf;
GList *d;
if (self->current_theme)
insert_theme (self, self->current_theme);
/* Always look in the Adwaita, gnome and hicolor icon themes.
* Looking in hicolor is mandated by the spec, looking in Adwaita
* and gnome is a pragmatic solution to prevent missing icons in
* GTK+ applications when run under, e.g. KDE.
*/
#if 0
insert_theme (self, DEFAULT_self);
insert_theme (self, "gnome");
#endif
insert_theme (self, FALLBACK_ICON_THEME);
self->themes = g_list_reverse (self->themes);
self->unthemed_icons = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)free_unthemed_icon);
for (base = 0; base < self->search_path_len; base++)
{
dir = self->search_path[base];
dir_mtime = g_slice_new (IconThemeDirMtime);
self->dir_mtimes = g_list_prepend (self->dir_mtimes, dir_mtime);
dir_mtime->dir = g_strdup (dir);
dir_mtime->mtime = 0;
dir_mtime->exists = FALSE;
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->exists = TRUE;
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)))
add_unthemed_icon (self, dir, file, FALSE);
g_dir_close (gdir);
}
self->dir_mtimes = g_list_reverse (self->dir_mtimes);
for (d = self->resource_paths; d; d = d->next)
{
gchar **children;
gint i;
dir = d->data;
children = g_resources_enumerate_children (dir, 0, NULL);
if (!children)
continue;
for (i = 0; children[i]; i++)
add_unthemed_icon (self, dir, children[i], TRUE);
g_strfreev (children);
}
self->themes_valid = TRUE;
g_get_current_time (&tv);
self->last_stat_time = tv.tv_sec;
GTK_DISPLAY_NOTE (self->display, ICONTHEME, {
GList *l;
GString *s;
s = g_string_new ("Current icon themes ");
for (l = self->themes; l; l = l->next)
{
IconTheme *theme = l->data;
g_string_append (s, theme->name);
g_string_append_c (s, ' ');
}
g_message ("%s", s->str);
g_string_free (s, TRUE);
});
}
static void
ensure_valid_themes (GtkIconTheme *self)
{
GTimeVal tv;
gboolean was_valid = self->themes_valid;
if (self->loading_themes)
return;
self->loading_themes = TRUE;
if (self->themes_valid)
{
g_get_current_time (&tv);
if (ABS (tv.tv_sec - self->last_stat_time) > 5 &&
rescan_themes (self))
{
g_hash_table_remove_all (self->info_cache);
blow_themes (self);
clear_lru_cache (self);
}
}
if (!self->themes_valid)
{
load_themes (self);
if (was_valid)
queue_theme_changed (self);
}
self->loading_themes = FALSE;
}
static inline gboolean
icon_name_is_symbolic (const gchar *icon_name,
int icon_name_len)
{
if (icon_name_len < 0)
icon_name_len = strlen (icon_name);
if (icon_name_len > strlen ("-symbolic"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic"), "-symbolic") == 0)
return TRUE;
}
if (icon_name_len > strlen ("-symbolic-ltr"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic-ltr"), "-symbolic-ltr") == 0 ||
strcmp (icon_name + icon_name_len - strlen ("-symbolic-rtl"), "-symbolic-rtl") == 0)
return TRUE;
}
return FALSE;
}
static inline gboolean
icon_uri_is_symbolic (const gchar *icon_name,
int icon_name_len)
{
if (icon_name_len < 0)
icon_name_len = strlen (icon_name);
if (icon_name_len > strlen ("-symbolic.svg"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic.svg"), "-symbolic.svg") == 0 ||
strcmp (icon_name + icon_name_len - strlen (".symbolic.png"), ".symbolic.png") == 0)
return TRUE;
}
if (icon_name_len > strlen ("-symbolic-ltr.svg"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic.ltr.svg"), "-symbolic-ltr.svg") == 0 ||
strcmp (icon_name + icon_name_len - strlen ("-symbolic.rtl.svg"), "-symbolic-rtl.svg") == 0)
return TRUE;
}
return FALSE;
}
static GtkIconInfo *
real_choose_icon (GtkIconTheme *self,
const gchar *icon_names[],
gint size,
gint scale,
GtkIconLookupFlags flags)
{
GList *l;
GtkIconInfo *icon_info = NULL;
GtkIconInfo *unscaled_icon_info;
UnthemedIcon *unthemed_icon = NULL;
const gchar *icon_name = NULL;
gboolean allow_svg;
IconTheme *theme = NULL;
gint i;
IconInfoKey key;
ensure_valid_themes (self);
key.icon_names = (gchar **)icon_names;
key.size = size;
key.scale = scale;
key.flags = flags;
icon_info = g_hash_table_lookup (self->info_cache, &key);
if (icon_info != NULL)
{
DEBUG_CACHE (("cache hit %p (%s %d 0x%x) (cache size %d)\n",
icon_info,
g_strjoinv (",", icon_info->key.icon_names),
icon_info->key.size, icon_info->key.flags,
g_hash_table_size (self->info_cache)));
icon_info = g_object_ref (icon_info);
/* Move item to front in LRU cache */
add_to_lru_cache (icon_info);
return icon_info;
}
if (flags & GTK_ICON_LOOKUP_NO_SVG)
allow_svg = FALSE;
else if (flags & GTK_ICON_LOOKUP_FORCE_SVG)
allow_svg = TRUE;
else
allow_svg = self->pixbuf_supports_svg;
/* This is used in the icontheme unit test */
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
for (i = 0; icon_names[i]; i++)
g_message ("\tlookup name: %s", icon_names[i]));
/* For symbolic icons, do a search in all registered themes first;
* a theme that inherits them from a parent theme might provide
* an alternative full-color version, but still expect the symbolic icon
* to show up instead.
*
* In other words: We prefer symbolic icons in inherited themes over
* generic icons in the theme.
*/
for (l = self->themes; l; l = l->next)
{
theme = l->data;
for (i = 0; icon_names[i] && icon_name_is_symbolic (icon_names[i], -1); i++)
{
icon_name = icon_names[i];
icon_info = theme_lookup_icon (theme, icon_name, size, scale, allow_svg);
if (icon_info)
goto out;
}
}
for (l = self->themes; l; l = l->next)
{
theme = l->data;
for (i = 0; icon_names[i]; i++)
{
icon_name = icon_names[i];
icon_info = theme_lookup_icon (theme, icon_name, size, scale, allow_svg);
if (icon_info)
goto out;
}
}
theme = NULL;
for (i = 0; icon_names[i]; i++)
{
unthemed_icon = g_hash_table_lookup (self->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_THEME_DIR_UNTHEMED, size, 1);
icon_info->cache_pixbuf = gdk_win32_icon_to_pixbuf_libgtk_only (hIcon, NULL, NULL);
DestroyIcon (hIcon);
}
g_strfreev (resources);
}
#endif
if (unthemed_icon)
{
icon_info = icon_info_new (ICON_THEME_DIR_UNTHEMED, size, 1);
/* 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);
else
{
static gboolean warned_once = FALSE;
if (!warned_once)
{
g_warning ("Found an icon but could not load it. "
"Most likely gdk-pixbuf does not provide SVG support.");
warned_once = TRUE;
}
g_clear_object (&icon_info);
goto out;
}
icon_info->is_svg = suffix_from_name (icon_info->filename) == ICON_SUFFIX_SVG;
icon_info->is_resource = unthemed_icon->is_resource;
}
out:
if (icon_info)
{
icon_info->desired_size = size;
icon_info->desired_scale = scale;
icon_info->forced_size = (flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0;
/* In case we're not scaling the icon we want to reuse the exact same
* size as a scale==1 lookup would be, rather than not scaling at all
* and causing a different layout
*/
icon_info->unscaled_scale = 1.0;
if (scale != 1 && !icon_info->forced_size && theme != NULL)
{
unscaled_icon_info = theme_lookup_icon (theme, icon_name, size, 1, allow_svg);
if (unscaled_icon_info)
{
icon_info->unscaled_scale =
(gdouble) unscaled_icon_info->dir_size * scale / (icon_info->dir_size * icon_info->dir_scale);
g_object_unref (unscaled_icon_info);
}
}
icon_info->key.icon_names = g_strdupv ((char **)icon_names);
icon_info->key.size = size;
icon_info->key.scale = scale;
icon_info->key.flags = flags;
icon_info->in_cache = self;
DEBUG_CACHE (("adding %p (%s %d 0x%x) to cache (cache size %d)\n",
icon_info,
g_strjoinv (",", icon_info->key.icon_names),
icon_info->key.size, icon_info->key.flags,
g_hash_table_size (self->info_cache)));
g_hash_table_insert (self->info_cache, &icon_info->key, icon_info);
}
else
{
static gboolean check_for_default_theme = TRUE;
gchar *default_theme_path;
gboolean found = FALSE;
if (check_for_default_theme)
{
check_for_default_theme = FALSE;
for (i = 0; !found && i < self->search_path_len; i++)
{
default_theme_path = g_build_filename (self->search_path[i],
FALLBACK_ICON_THEME,
"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], FALLBACK_ICON_THEME, "http://icon-theme.freedesktop.org/releases");
}
}
}
return icon_info;
}
static void
icon_name_list_add_icon (GPtrArray *icons,
const gchar *dir_suffix,
gchar *icon_name)
{
if (dir_suffix)
g_ptr_array_add (icons, g_strconcat (icon_name, dir_suffix, NULL));
g_ptr_array_add (icons, icon_name);
}
static GtkIconInfo *
choose_icon (GtkIconTheme *self,
const gchar *icon_names[],
gint size,
gint scale,
GtkIconLookupFlags flags)
{
gboolean has_regular = FALSE, has_symbolic = FALSE;
GtkIconInfo *icon_info;
GPtrArray *new_names;
const gchar *dir_suffix;
guint i;
if (flags & GTK_ICON_LOOKUP_DIR_LTR)
dir_suffix = "-ltr";
else if (flags & GTK_ICON_LOOKUP_DIR_RTL)
dir_suffix = "-rtl";
else
dir_suffix = NULL;
for (i = 0; icon_names[i]; i++)
{
if (icon_name_is_symbolic (icon_names[i], -1))
has_symbolic = TRUE;
else
has_regular = TRUE;
}
if ((flags & GTK_ICON_LOOKUP_FORCE_REGULAR) && has_symbolic)
{
new_names = g_ptr_array_new_with_free_func (g_free);
for (i = 0; icon_names[i]; i++)
{
if (icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (new_names, dir_suffix, g_strndup (icon_names[i], strlen (icon_names[i]) - strlen ("-symbolic")));
else
icon_name_list_add_icon (new_names, dir_suffix, g_strdup (icon_names[i]));
}
for (i = 0; icon_names[i]; i++)
{
if (icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (new_names, dir_suffix, g_strdup (icon_names[i]));
}
g_ptr_array_add (new_names, NULL);
icon_info = real_choose_icon (self,
(const gchar **) new_names->pdata,
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC));
g_ptr_array_free (new_names, TRUE);
}
else if ((flags & GTK_ICON_LOOKUP_FORCE_SYMBOLIC) && has_regular)
{
new_names = g_ptr_array_new_with_free_func (g_free);
for (i = 0; icon_names[i]; i++)
{
if (!icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (new_names, dir_suffix, g_strconcat (icon_names[i], "-symbolic", NULL));
else
icon_name_list_add_icon (new_names, dir_suffix, g_strdup (icon_names[i]));
}
for (i = 0; icon_names[i]; i++)
{
if (!icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (new_names, dir_suffix, g_strdup (icon_names[i]));
}
g_ptr_array_add (new_names, NULL);
icon_info = real_choose_icon (self,
(const gchar **) new_names->pdata,
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC));
g_ptr_array_free (new_names, TRUE);
}
else if (dir_suffix)
{
new_names = g_ptr_array_new_with_free_func (g_free);
for (i = 0; icon_names[i]; i++)
{
icon_name_list_add_icon (new_names, dir_suffix, g_strdup (icon_names[i]));
}
g_ptr_array_add (new_names, NULL);
icon_info = real_choose_icon (self,
(const gchar **) new_names->pdata,
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC));
g_ptr_array_free (new_names, TRUE);
}
else
{
icon_info = real_choose_icon (self,
icon_names,
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC));
}
return icon_info;
}
/**
* gtk_icon_theme_lookup_icon:
* @self: 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 #GtkIconInfo 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.)
*
* When rendering on displays with high pixel densities you should not
* use a @size multiplied by the scaling factor returned by functions
* like gdk_surface_get_scale_factor(). Instead, you should use
* gtk_icon_theme_lookup_icon_for_scale(), as the assets loaded
* for a given scaling factor may be different.
*
* Returns: (nullable) (transfer full): a #GtkIconInfo object
* containing information about the icon, or %NULL if the
* icon wasn’t found.
*/
GtkIconInfo *
gtk_icon_theme_lookup_icon (GtkIconTheme *self,
const gchar *icon_name,
gint size,
GtkIconLookupFlags flags)
{
g_return_val_if_fail (GTK_IS_ICON_THEME (self), 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_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("looking up icon %s", icon_name));
return gtk_icon_theme_lookup_icon_for_scale (self, icon_name,
size, 1, flags);
}
/**
* gtk_icon_theme_lookup_icon_for_scale:
* @self: a #GtkIconTheme
* @icon_name: the name of the icon to lookup
* @size: desired icon size
* @scale: the desired scale
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up a named icon for a particular window scale and returns a
* #GtkIconInfo 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.)
*
* Returns: (nullable) (transfer full): a #GtkIconInfo object
* containing information about the icon, or %NULL if the
* icon wasn’t found.
*/
GtkIconInfo *
gtk_icon_theme_lookup_icon_for_scale (GtkIconTheme *self,
const gchar *icon_name,
gint size,
gint scale,
GtkIconLookupFlags flags)
{
GtkIconInfo *info;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), 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 (scale >= 1, NULL);
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("looking up icon %s for scale %d", icon_name, scale));
if (flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK)
{
gchar **names, **nonsymbolic_names;
gint dashes, i;
gchar *p, *nonsymbolic_icon_name;
gboolean is_symbolic;
int icon_name_len = strlen (icon_name);
is_symbolic = icon_name_is_symbolic (icon_name, icon_name_len);
if (is_symbolic)
nonsymbolic_icon_name = g_strndup (icon_name, icon_name_len - strlen ("-symbolic"));
else
nonsymbolic_icon_name = g_strdup (icon_name);
dashes = 0;
for (p = (gchar *) nonsymbolic_icon_name; *p; p++)
if (*p == '-')
dashes++;
nonsymbolic_names = g_new (gchar *, dashes + 2);
nonsymbolic_names[0] = nonsymbolic_icon_name;
for (i = 1; i <= dashes; i++)
{
nonsymbolic_names[i] = g_strdup (nonsymbolic_names[i - 1]);
p = strrchr (nonsymbolic_names[i], '-');
*p = '\0';
}
nonsymbolic_names[dashes + 1] = NULL;
if (is_symbolic)
{
names = g_new (gchar *, 2 * dashes + 3);
for (i = 0; nonsymbolic_names[i] != NULL; i++)
{
names[i] = g_strconcat (nonsymbolic_names[i], "-symbolic", NULL);
names[dashes + 1 + i] = nonsymbolic_names[i];
}
names[dashes + 1 + i] = NULL;
g_free (nonsymbolic_names);
}
else
{
names = nonsymbolic_names;
}
info = choose_icon (self, (const gchar **) names, size, scale, flags);
g_strfreev (names);
}
else
{
const gchar *names[2];
names[0] = icon_name;
names[1] = NULL;
info = choose_icon (self, names, size, scale, flags);
}
return info;
}
/**
* gtk_icon_theme_choose_icon:
* @self: 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 #GtkIconInfo 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.
*
* Returns: (nullable) (transfer full): a #GtkIconInfo object
* containing information about the icon, or %NULL if the icon wasn’t
* found.
*/
GtkIconInfo *
gtk_icon_theme_choose_icon (GtkIconTheme *self,
const gchar *icon_names[],
gint size,
GtkIconLookupFlags flags)
{
g_return_val_if_fail (GTK_IS_ICON_THEME (self), 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);
g_warn_if_fail ((flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK) == 0);
return choose_icon (self, icon_names, size, 1, flags);
}
/**
* gtk_icon_theme_choose_icon_for_scale:
* @self: a #GtkIconTheme
* @icon_names: (array zero-terminated=1): %NULL-terminated
* array of icon names to lookup
* @size: desired icon size
* @scale: desired scale
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up a named icon for a particular window scale and returns
* a #GtkIconInfo 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.
*
* Returns: (nullable) (transfer full): a #GtkIconInfo object
* containing information about the icon, or %NULL if the
* icon wasn’t found.
*/
GtkIconInfo *
gtk_icon_theme_choose_icon_for_scale (GtkIconTheme *self,
const gchar *icon_names[],
gint size,
gint scale,
GtkIconLookupFlags flags)
{
g_return_val_if_fail (GTK_IS_ICON_THEME (self), 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);
g_return_val_if_fail (scale >= 1, NULL);
g_warn_if_fail ((flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK) == 0);
return choose_icon (self, icon_names, size, scale, 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:
* @self: 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.
*
* Returns: (nullable) (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.
*/
GdkPaintable *
gtk_icon_theme_load_icon (GtkIconTheme *self,
const gchar *icon_name,
gint size,
GtkIconLookupFlags flags,
GError **error)
{
g_return_val_if_fail (GTK_IS_ICON_THEME (self), 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);
return gtk_icon_theme_load_icon_for_scale (self, icon_name,
size, 1, flags, error);
}
/**
* gtk_icon_theme_load_icon_for_scale:
* @self: 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().
* @scale: desired scale
* @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 for a particular window scale,
* 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.
*
* Returns: (nullable) (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.
*/
GdkPaintable *
gtk_icon_theme_load_icon_for_scale (GtkIconTheme *self,
const gchar *icon_name,
gint size,
gint scale,
GtkIconLookupFlags flags,
GError **error)
{
GtkIconInfo *icon_info;
GdkPaintable *paintable = NULL;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), 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);
g_return_val_if_fail (scale >= 1, NULL);
icon_info = gtk_icon_theme_lookup_icon_for_scale (self, icon_name, size, scale,
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 %s"), icon_name, self->current_theme);
return NULL;
}
paintable = gtk_icon_info_load_icon (icon_info, error);
g_prefix_error (error, "Failed to load %s: ", icon_info->filename);
g_object_unref (icon_info);
return paintable;
}
/**
* gtk_icon_theme_has_icon:
* @self: a #GtkIconTheme
* @icon_name: the name of an icon
*
* Checks whether an icon theme includes an icon
* for a particular name.
*
* Returns: %TRUE if @self includes an
* icon for @icon_name.
*/
gboolean
gtk_icon_theme_has_icon (GtkIconTheme *self,
const gchar *icon_name)
{
GList *l;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), FALSE);
g_return_val_if_fail (icon_name != NULL, FALSE);
ensure_valid_themes (self);
for (l = self->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;
}
for (l = self->themes; l; l = l->next)
{
if (theme_has_icon (l->data, icon_name))
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:
* @self: 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.
*
* Returns: (array zero-terminated=1) (transfer full): A 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.
*/
gint *
gtk_icon_theme_get_icon_sizes (GtkIconTheme *self,
const gchar *icon_name)
{
GList *l, *d;
GHashTable *sizes;
gint *result, *r;
guint suffix;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
ensure_valid_themes (self);
sizes = g_hash_table_new (g_direct_hash, g_direct_equal);
for (l = self->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);
if (suffix != ICON_SUFFIX_NONE)
{
if (suffix == ICON_SUFFIX_SVG)
g_hash_table_insert (sizes, GINT_TO_POINTER (-1), NULL);
else
g_hash_table_insert (sizes, GINT_TO_POINTER (dir->size), NULL);
}
}
}
r = result = g_new0 (gint, g_hash_table_size (sizes) + 1);
g_hash_table_foreach (sizes, add_size, &r);
g_hash_table_destroy (sizes);
return result;
}
static void
add_key_to_hash (gpointer key,
gpointer value,
gpointer user_data)
{
GHashTable *hash = user_data;
g_hash_table_insert (hash, key, NULL);
}
static void
add_key_to_list (gpointer key,
gpointer value,
gpointer user_data)
{
GList **list = user_data;
*list = g_list_prepend (*list, g_strdup (key));
}
/**
* gtk_icon_theme_list_icons:
* @self: 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”. Contexts are explained in the
* [Icon Theme Specification](http://www.freedesktop.org/wiki/Specifications/icon-theme-spec).
* The standard contexts are listed in the
* [Icon Naming Specification](http://www.freedesktop.org/wiki/Specifications/icon-naming-spec).
*
* Returns: (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().
*/
GList *
gtk_icon_theme_list_icons (GtkIconTheme *self,
const gchar *context)
{
GHashTable *icons;
GList *list, *l;
GQuark context_quark;
ensure_valid_themes (self);
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 = self->themes;
while (l != NULL)
{
theme_list_icons (l->data, icons, context_quark);
l = l->next;
}
if (context_quark == 0)
g_hash_table_foreach (self->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;
}
static gboolean
rescan_themes (GtkIconTheme *self)
{
IconThemeDirMtime *dir_mtime;
GList *d;
gint stat_res;
GStatBuf stat_buf;
GTimeVal tv;
for (d = self->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 && dir_mtime->exists &&
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->exists &&
(stat_res != 0 || !S_ISDIR (stat_buf.st_mode)))
continue;
return TRUE;
}
g_get_current_time (&tv);
self->last_stat_time = tv.tv_sec;
return FALSE;
}
/**
* gtk_icon_theme_rescan_if_needed:
* @self: 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 @self is accessed.
*
* Returns: %TRUE if the icon theme has changed and needed
* to be reloaded.
*/
gboolean
gtk_icon_theme_rescan_if_needed (GtkIconTheme *self)
{
gboolean retval;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), FALSE);
retval = rescan_themes (self);
if (retval)
do_theme_change (self);
return retval;
}
static void
theme_destroy (IconTheme *theme)
{
g_free (theme->display_name);
g_free (theme->comment);
g_free (theme->name);
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);
if (dir->icons)
g_hash_table_destroy (dir->icons);
g_free (dir->dir);
g_free (dir->subdir);
g_free (dir);
}
static int
theme_dir_size_difference (IconThemeDir *dir,
gint size,
gint scale)
{
gint scaled_size, scaled_dir_size;
gint min, max;
scaled_size = size * scale;
scaled_dir_size = dir->size * dir->scale;
switch (dir->type)
{
case ICON_THEME_DIR_FIXED:
return abs (scaled_size - scaled_dir_size);
case ICON_THEME_DIR_SCALABLE:
if (scaled_size < (dir->min_size * dir->scale))
return (dir->min_size * dir->scale) - scaled_size;
if (size > (dir->max_size * dir->scale))
return scaled_size - (dir->max_size * dir->scale);
return 0;
case ICON_THEME_DIR_THRESHOLD:
min = (dir->size - dir->threshold) * dir->scale;
max = (dir->size + dir->threshold) * dir->scale;
if (scaled_size < min)
return min - scaled_size;
if (scaled_size > max)
return scaled_size - max;
return 0;
case ICON_THEME_DIR_UNTHEMED:
default:
g_assert_not_reached ();
return 1000;
}
}
static const gchar *
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";
case ICON_SUFFIX_SYMBOLIC_PNG:
return ".symbolic.png";
case ICON_SUFFIX_NONE:
case HAS_ICON_FILE:
default:
g_assert_not_reached();
return NULL;
}
}
static inline IconSuffix
suffix_from_name (const gchar *name)
{
const gsize name_len = strlen (name);
if (name_len > 4)
{
if (name_len > strlen (".symbolic.png"))
{
if (strcmp (name + name_len - strlen (".symbolic.png"), ".symbolic.png") == 0)
return ICON_SUFFIX_SYMBOLIC_PNG;
}
if (strcmp (name + name_len - strlen (".png"), ".png") == 0)
return ICON_SUFFIX_PNG;
if (strcmp (name + name_len - strlen (".svg"), ".svg") == 0)
return ICON_SUFFIX_SVG;
if (strcmp (name + name_len - strlen (".xpm"), ".xpm") == 0)
return ICON_SUFFIX_XPM;
}
return ICON_SUFFIX_NONE;
}
static IconSuffix
best_suffix (IconSuffix suffix,
gboolean allow_svg)
{
if ((suffix & ICON_SUFFIX_SYMBOLIC_PNG) != 0)
return ICON_SUFFIX_SYMBOLIC_PNG;
else 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)
{
IconSuffix suffix, symbolic_suffix;
if (dir->cache)
{
int icon_name_len = strlen (icon_name);
if (icon_name_is_symbolic (icon_name, icon_name_len))
{
/* Look for foo-symbolic.symbolic.png, as the cache only stores the ".png" suffix */
char *icon_name_with_prefix = g_strconcat (icon_name, ".symbolic", NULL);
symbolic_suffix = (IconSuffix)gtk_icon_cache_get_icon_flags (dir->cache,
icon_name_with_prefix,
dir->subdir_index);
g_free (icon_name_with_prefix);
if (symbolic_suffix & ICON_SUFFIX_PNG)
suffix = ICON_SUFFIX_SYMBOLIC_PNG;
else
suffix = (IconSuffix)gtk_icon_cache_get_icon_flags (dir->cache,
icon_name,
dir->subdir_index);
}
else
suffix = (IconSuffix)gtk_icon_cache_get_icon_flags (dir->cache,
icon_name,
dir->subdir_index);
suffix = suffix & ~HAS_ICON_FILE;
}
else
suffix = GPOINTER_TO_UINT (g_hash_table_lookup (dir->icons, icon_name));
GTK_NOTE (ICONTHEME, g_message ("get icon suffix%s: %u", dir->cache ? " (cached)" : "", suffix));
return suffix;
}
/* returns TRUE if dir_a is a better match */
static gboolean
compare_dir_matches (IconThemeDir *dir_a, gint difference_a,
IconThemeDir *dir_b, gint difference_b,
gint requested_size,
gint requested_scale)
{
gint diff_a;
gint diff_b;
if (difference_a == 0)
{
if (difference_b != 0)
return TRUE;
/* a and b both exact matches */
}
else
{
/* If scaling, *always* prefer downscaling */
if (dir_a->size >= requested_size &&
dir_b->size < requested_size)
return TRUE;
if (dir_a->size < requested_size &&
dir_b->size >= requested_size)
return FALSE;
/* Otherwise prefer the closest match */
if (difference_a < difference_b)
return TRUE;
if (difference_a > difference_b)
return FALSE;
/* same pixel difference */
}
if (dir_a->scale == requested_scale &&
dir_b->scale != requested_scale)
return TRUE;
if (dir_a->scale != requested_scale &&
dir_b->scale == requested_scale)
return FALSE;
/* a and b both match the scale */
if (dir_a->type != ICON_THEME_DIR_SCALABLE &&
dir_b->type == ICON_THEME_DIR_SCALABLE)
return TRUE;
if (dir_a->type == ICON_THEME_DIR_SCALABLE &&
dir_b->type != ICON_THEME_DIR_SCALABLE)
return FALSE;
/* a and b both are scalable */
diff_a = abs (requested_size * requested_scale - dir_a->size * dir_a->scale);
diff_b = abs (requested_size * requested_scale - dir_b->size * dir_b->scale);
return diff_a <= diff_b;
}
static GtkIconInfo *
theme_lookup_icon (IconTheme *theme,
const gchar *icon_name,
gint size,
gint scale,
gboolean allow_svg)
{
GList *dirs, *l;
IconThemeDir *dir, *min_dir;
gchar *file;
gint min_difference, difference;
IconSuffix suffix;
IconSuffix min_suffix;
min_difference = G_MAXINT;
min_dir = NULL;
dirs = theme->dirs;
l = dirs;
while (l != NULL)
{
dir = l->data;
GTK_NOTE (ICONTHEME, g_message ("look up icon dir %s", dir->dir));
suffix = theme_dir_get_icon_suffix (dir, icon_name);
if (best_suffix (suffix, allow_svg) != ICON_SUFFIX_NONE)
{
difference = theme_dir_size_difference (dir, size, scale);
if (min_dir == NULL ||
compare_dir_matches (dir, difference,
min_dir, min_difference,
size, scale))
{
min_dir = dir;
min_suffix = suffix;
min_difference = difference;
}
}
l = l->next;
}
if (min_dir)
{
GtkIconInfo *icon_info;
icon_info = icon_info_new (min_dir->type, min_dir->size, min_dir->scale);
icon_info->min_size = min_dir->min_size;
icon_info->max_size = min_dir->max_size;
suffix = min_suffix;
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->is_svg = suffix == ICON_SUFFIX_SVG;
icon_info->is_resource = min_dir->is_resource;
g_free (file);
}
else
{
icon_info->filename = NULL;
}
if (min_dir->cache)
{
icon_info->cache_pixbuf = gtk_icon_cache_get_icon (min_dir->cache, icon_name,
min_dir->subdir_index);
}
return icon_info;
}
return NULL;
}
static void
theme_list_icons (IconTheme *theme,
GHashTable *icons,
GQuark context)
{
GList *l = theme->dirs;
IconThemeDir *dir;
while (l != NULL)
{
dir = l->data;
if (context == dir->context ||
context == 0)
{
if (dir->cache)
gtk_icon_cache_add_icons (dir->cache, dir->subdir, icons);
else
g_hash_table_foreach (dir->icons, add_key_to_hash, icons);
}
l = l->next;
}
}
static gboolean
theme_has_icon (IconTheme *theme,
const gchar *icon_name)
{
GList *l;
for (l = theme->dirs; l; l = l->next)
{
IconThemeDir *dir = l->data;
if (dir->cache)
{
if (gtk_icon_cache_has_icon (dir->cache, icon_name))
return TRUE;
}
else
{
if (g_hash_table_lookup (dir->icons, icon_name) != NULL)
return TRUE;
}
}
return FALSE;
}
static GHashTable *
scan_directory (GtkIconTheme *self,
char *full_dir)
{
GDir *gdir;
const gchar *name;
GHashTable *icons = NULL;
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("scanning directory %s", full_dir));
gdir = g_dir_open (full_dir, 0, NULL);
if (gdir == NULL)
return NULL;
while ((name = g_dir_read_name (gdir)))
{
gchar *base_name;
IconSuffix suffix, hash_suffix;
suffix = suffix_from_name (name);
if (suffix == ICON_SUFFIX_NONE)
continue;
if (!icons)
icons = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
base_name = strip_suffix (name);
hash_suffix = GPOINTER_TO_INT (g_hash_table_lookup (icons, base_name));
/* takes ownership of base_name */
g_hash_table_replace (icons, base_name, GUINT_TO_POINTER (hash_suffix|suffix));
}
g_dir_close (gdir);
return icons;
}
static void
theme_subdir_load (GtkIconTheme *self,
IconTheme *theme,
GKeyFile *theme_file,
gchar *subdir)
{
GList *d;
gchar *type_string;
IconThemeDir *dir;
IconThemeDirType type;
gchar *context_string;
GQuark context;
gint size;
gint min_size;
gint max_size;
gint threshold;
gchar *full_dir;
GError *error = NULL;
IconThemeDirMtime *dir_mtime;
gint scale;
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;
if (g_key_file_has_key (theme_file, subdir, "Scale", NULL))
scale = g_key_file_get_integer (theme_file, subdir, "Scale", NULL);
else
scale = 1;
for (d = self->dir_mtimes; d; d = d->next)
{
dir_mtime = (IconThemeDirMtime *)d->data;
if (!dir_mtime->exists)
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))
{
gboolean has_icons;
GtkIconCache *dir_cache;
GHashTable *icon_table = NULL;
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);
}
if (dir_mtime->cache != NULL)
{
dir_cache = dir_mtime->cache;
has_icons = gtk_icon_cache_has_icons (dir_cache, subdir);
}
else
{
dir_cache = NULL;
icon_table = scan_directory (self, full_dir);
has_icons = icon_table != NULL;
}
if (!has_icons)
{
g_assert (!icon_table);
g_free (full_dir);
continue;
}
dir = g_new0 (IconThemeDir, 1);
dir->type = type;
dir->is_resource = FALSE;
dir->context = context;
dir->size = size;
dir->min_size = min_size;
dir->max_size = max_size;
dir->threshold = threshold;
dir->dir = full_dir;
dir->subdir = g_strdup (subdir);
dir->scale = scale;
dir->icons = icon_table;
if (dir_cache)
{
dir->cache = gtk_icon_cache_ref (dir_cache);
dir->subdir_index = gtk_icon_cache_get_directory_index (dir->cache, dir->subdir);
}
else
{
dir_cache = NULL;
dir->subdir_index = -1;
}
theme->dirs = g_list_prepend (theme->dirs, dir);
}
else
g_free (full_dir);
}
if (strcmp (theme->name, FALLBACK_ICON_THEME) == 0)
{
for (d = self->resource_paths; d; d = d->next)
{
int i;
char **children;
/* Force a trailing / here, to avoid extra copies in GResource */
full_dir = g_build_filename ((const gchar *)d->data, subdir, " ", NULL);
full_dir[strlen (full_dir) - 1] = '\0';
children = g_resources_enumerate_children (full_dir, 0, NULL);
if (!children)
{
g_free (full_dir);
continue;
}
dir = g_new0 (IconThemeDir, 1);
dir->icons = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
dir->type = type;
dir->is_resource = TRUE;
dir->context = context;
dir->size = size;
dir->min_size = min_size;
dir->max_size = max_size;
dir->threshold = threshold;
dir->dir = full_dir;
dir->subdir = g_strdup (subdir);
dir->scale = scale;
dir->cache = NULL;
dir->subdir_index = -1;
for (i = 0; children[i]; i++)
{
gchar *base_name;
IconSuffix suffix, hash_suffix;
suffix = suffix_from_name (children[i]);
if (suffix == ICON_SUFFIX_NONE)
continue;
base_name = strip_suffix (children[i]);
hash_suffix = GPOINTER_TO_INT (g_hash_table_lookup (dir->icons, base_name));
/* takes ownership of base_name */
g_hash_table_replace (dir->icons, base_name, GUINT_TO_POINTER (hash_suffix|suffix));
}
g_strfreev (children);
if (g_hash_table_size (dir->icons) > 0)
theme->dirs = g_list_prepend (theme->dirs, dir);
else
theme_dir_destroy (dir);
}
}
}
/*
* GtkIconInfo
*/
G_DEFINE_TYPE (GtkIconInfo, gtk_icon_info, G_TYPE_OBJECT)
static void
gtk_icon_info_init (GtkIconInfo *icon_info)
{
icon_info->scale = -1.;
}
static GtkIconInfo *
icon_info_new (IconThemeDirType type,
gint dir_size,
gint dir_scale)
{
GtkIconInfo *icon_info;
icon_info = g_object_new (GTK_TYPE_ICON_INFO, NULL);
icon_info->dir_type = type;
icon_info->dir_size = dir_size;
icon_info->dir_scale = dir_scale;
icon_info->unscaled_scale = 1.0;
icon_info->is_svg = FALSE;
icon_info->is_resource = FALSE;
return icon_info;
}
/* This only copies whatever is needed to load the pixbuf,
* so that we can do a load in a thread without affecting
* the original IconInfo from the thread.
*/
static GtkIconInfo *
icon_info_dup (GtkIconInfo *icon_info)
{
GtkIconInfo *dup;
dup = icon_info_new (icon_info->dir_type, icon_info->dir_size, icon_info->dir_scale);
dup->filename = g_strdup (icon_info->filename);
dup->is_svg = icon_info->is_svg;
if (icon_info->loadable)
dup->loadable = g_object_ref (icon_info->loadable);
if (icon_info->texture)
dup->texture = g_object_ref (icon_info->texture);
if (icon_info->cache_pixbuf)
dup->cache_pixbuf = g_object_ref (icon_info->cache_pixbuf);
dup->scale = icon_info->scale;
dup->unscaled_scale = icon_info->unscaled_scale;
dup->desired_size = icon_info->desired_size;
dup->desired_scale = icon_info->desired_scale;
dup->forced_size = icon_info->forced_size;
dup->is_resource = icon_info->is_resource;
dup->min_size = icon_info->min_size;
dup->max_size = icon_info->max_size;
dup->symbolic_width = icon_info->symbolic_width;
dup->symbolic_height = icon_info->symbolic_height;
return dup;
}
static void
gtk_icon_info_finalize (GObject *object)
{
GtkIconInfo *icon_info = (GtkIconInfo *) object;
if (icon_info->in_cache)
g_hash_table_remove (icon_info->in_cache->info_cache, &icon_info->key);
g_strfreev (icon_info->key.icon_names);
g_free (icon_info->filename);
g_clear_object (&icon_info->loadable);
g_clear_object (&icon_info->texture);
g_clear_object (&icon_info->cache_pixbuf);
g_clear_error (&icon_info->load_error);
G_OBJECT_CLASS (gtk_icon_info_parent_class)->finalize (object);
}
static void
gtk_icon_info_class_init (GtkIconInfoClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = gtk_icon_info_finalize;
}
/**
* gtk_icon_info_get_base_size:
* @self: 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;
* These icons will be given
* the same base size as the larger icons to which
* they are attached.
*
* Note that for scaled icons the base size does
* not include the base scale.
*
* Returns: the base size, or 0, if no base
* size is known for the icon.
*/
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_base_scale:
* @self: a #GtkIconInfo
*
* Gets the base scale for the icon. The base scale is a scale
* for the icon that was specified by the icon theme creator.
* For instance an icon drawn for a high-dpi monitor with window
* scale 2 for a base size of 32 will be 64 pixels tall and have
* a base scale of 2.
*
* Returns: the base scale
*/
gint
gtk_icon_info_get_base_scale (GtkIconInfo *icon_info)
{
g_return_val_if_fail (icon_info != NULL, 0);
return icon_info->dir_scale;
}
/**
* gtk_icon_info_get_filename:
* @self: 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().
*
* Returns: (nullable) (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.
*/
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_is_symbolic:
* @self: a #GtkIconInfo
*
* Checks if the icon is symbolic or not. This currently uses only
* the file name and not the file contents for determining this.
* This behaviour may change in the future.
*
* Returns: %TRUE if the icon is symbolic, %FALSE otherwise
*/
gboolean
gtk_icon_info_is_symbolic (GtkIconInfo *icon_info)
{
g_return_val_if_fail (GTK_IS_ICON_INFO (icon_info), FALSE);
return icon_info->filename != NULL &&
icon_uri_is_symbolic (icon_info->filename, -1);
}
/* If this returns TRUE, its safe to call icon_info_ensure_scale_and_texture
* without blocking
*/
static gboolean
icon_info_get_pixbuf_ready (GtkIconInfo *icon_info)
{
if (icon_info->texture)
return TRUE;
if (icon_info->load_error)
return TRUE;
return FALSE;
}
static GLoadableIcon *
icon_info_get_loadable (GtkIconInfo *icon_info)
{
GFile *file;
GLoadableIcon *loadable;
if (icon_info->loadable)
return g_object_ref (icon_info->loadable);
if (icon_info->is_resource)
{
char *uri = g_strconcat ("resource://", icon_info->filename, NULL);
file = g_file_new_for_uri (uri);
g_free (uri);
}
else
file = g_file_new_for_path (icon_info->filename);
loadable = G_LOADABLE_ICON (g_file_icon_new (file));
g_object_unref (file);
return loadable;
}
/* 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_texture (GtkIconInfo *icon_info)
{
gint image_width, image_height, image_size;
gint scaled_desired_size;
GdkPixbuf *source_pixbuf;
gdouble dir_scale;
if (icon_info->texture)
return TRUE;
if (icon_info->load_error)
return FALSE;
scaled_desired_size = icon_info->desired_size * icon_info->desired_scale;
dir_scale = icon_info->dir_scale;
/* 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->dir_type == ICON_THEME_DIR_UNTHEMED)
icon_info->scale = -1;
else if (icon_info->dir_type == ICON_THEME_DIR_FIXED ||
icon_info->dir_type == ICON_THEME_DIR_THRESHOLD)
icon_info->scale = icon_info->unscaled_scale;
else if (icon_info->dir_type == ICON_THEME_DIR_SCALABLE)
{
/* For svg icons, treat scalable directories as if they had
* a Scale=<desired_scale> entry. In particular, this means
* spinners that are restriced to size 32 will loaded at size
* up to 64 with Scale=2.
*/
if (icon_info->is_svg)
dir_scale = icon_info->desired_scale;
if (scaled_desired_size < icon_info->min_size * dir_scale)
icon_info->scale = (gdouble) icon_info->min_size / (gdouble) icon_info->dir_size;
else if (scaled_desired_size > icon_info->max_size * dir_scale)
icon_info->scale = (gdouble) icon_info->max_size / (gdouble) icon_info->dir_size;
else
icon_info->scale = (gdouble) scaled_desired_size / (icon_info->dir_size * dir_scale);
}
/* 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 if (icon_info->is_resource)
{
if (icon_info->is_svg)
{
gint size;
if (icon_info->forced_size || icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
size = scaled_desired_size;
else
size = icon_info->dir_size * dir_scale * icon_info->scale;
if (gtk_icon_info_is_symbolic (icon_info))
source_pixbuf = gtk_make_symbolic_pixbuf_from_resource (icon_info->filename,
size, size,
icon_info->desired_scale,
&icon_info->load_error);
else if (size == 0)
source_pixbuf = _gdk_pixbuf_new_from_resource_scaled (icon_info->filename,
"svg",
icon_info->desired_scale,
&icon_info->load_error);
else
source_pixbuf = _gdk_pixbuf_new_from_resource_at_scale (icon_info->filename,
"svg",
size, size, TRUE,
&icon_info->load_error);
}
else
source_pixbuf = _gdk_pixbuf_new_from_resource (icon_info->filename,
"png",
&icon_info->load_error);
}
else
{
GLoadableIcon *loadable;
GInputStream *stream;
loadable = icon_info_get_loadable (icon_info);
stream = g_loadable_icon_load (loadable,
scaled_desired_size,
NULL, NULL,
&icon_info->load_error);
g_object_unref (loadable);
if (stream)
{
/* SVG icons are a special case - we just immediately scale them
* to the desired size
*/
if (icon_info->is_svg)
{
gint size;
if (icon_info->forced_size || icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
size = scaled_desired_size;
else
size = icon_info->dir_size * dir_scale * icon_info->scale;
if (gtk_icon_info_is_symbolic (icon_info))
source_pixbuf = gtk_make_symbolic_pixbuf_from_path (icon_info->filename,
size, size,
icon_info->desired_scale,
&icon_info->load_error);
else if (size == 0)
source_pixbuf = _gdk_pixbuf_new_from_stream_scaled (stream,
"svg",
icon_info->desired_scale,
NULL,
&icon_info->load_error);
else
source_pixbuf = _gdk_pixbuf_new_from_stream_at_scale (stream,
"svg",
size, size,
TRUE, NULL,
&icon_info->load_error);
}
else
source_pixbuf = _gdk_pixbuf_new_from_stream (stream,
"png",
NULL,
&icon_info->load_error);
g_object_unref (stream);
}
}
if (!source_pixbuf)
{
static gboolean warn_about_load_failure = TRUE;
if (warn_about_load_failure)
{
const char *path;
if (icon_info->filename)
path = icon_info->filename;
else if (G_IS_FILE (icon_info->loadable))
path = g_file_peek_path (G_FILE (icon_info->loadable));
else
path = "icon theme";
g_warning ("Could not load a pixbuf from %s.\n"
"This may indicate that pixbuf loaders or the mime database could not be found.",
path);
warn_about_load_failure = FALSE;
}
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);
image_size = MAX (image_width, image_height);
if (icon_info->is_svg)
icon_info->scale = image_size / 1000.;
else if (icon_info->scale < 0.0)
{
if (image_size > 0 && scaled_desired_size > 0)
icon_info->scale = (gdouble)scaled_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);
}
if (icon_info->is_svg ||
icon_info->scale == 1.0)
{
icon_info->texture = gdk_texture_new_for_pixbuf (source_pixbuf);
g_object_unref (source_pixbuf);
}
else
{
GdkPixbuf *scaled = gdk_pixbuf_scale_simple (source_pixbuf,
MAX (1, 0.5 + image_width * icon_info->scale),
MAX (1, 0.5 + image_height * icon_info->scale),
GDK_INTERP_BILINEAR);
icon_info->texture = gdk_texture_new_for_pixbuf (scaled);
g_object_unref (scaled);
g_object_unref (source_pixbuf);
}
g_assert (icon_info->texture != NULL);
add_to_lru_cache (icon_info);
return TRUE;
}
/**
* gtk_icon_info_load_icon:
* @self: a #GtkIconInfo 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.
*
* Returns: (transfer full) (nullable): the rendered icon.
* Use g_object_unref() to release your reference to the icon.
*/
GdkPaintable *
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->texture)
{
icon_info_ensure_scale_and_texture (icon_info);
/* Still no texture -> error */
if (!icon_info->texture)
{
if (icon_info->load_error)
{
if (error)
*error = g_error_copy (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 GDK_PAINTABLE (g_object_ref (icon_info->texture));
}
static void
load_icon_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GtkIconInfo *dup = task_data;
(void)icon_info_ensure_scale_and_texture (dup);
g_task_return_pointer (task, NULL, NULL);
}
/**
* gtk_icon_info_load_icon_async:
* @self: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
* @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call when the
* request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously load, render and scale an icon previously looked up
* from the icon theme using gtk_icon_theme_lookup_icon().
*
* For more details, see gtk_icon_info_load_icon() which is the synchronous
* version of this call.
*/
void
gtk_icon_info_load_icon_async (GtkIconInfo *icon_info,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (icon_info, cancellable, callback, user_data);
if (icon_info_get_pixbuf_ready (icon_info))
{
GError *error = NULL;
GdkPaintable *paintable = gtk_icon_info_load_icon (icon_info, &error);
if (paintable == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, paintable, g_object_unref);
}
else
{
GtkIconInfo *dup = icon_info_dup (icon_info);
g_task_set_task_data (task, dup, g_object_unref);
g_task_run_in_thread (task, load_icon_thread);
}
g_object_unref (task);
}
/**
* gtk_icon_info_load_icon_finish:
* @self: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
* @res: a #GAsyncResult
* @error: (allow-none): location to store error information on failure,
* or %NULL.
*
* Finishes an async icon load, see gtk_icon_info_load_icon_async().
*
* Returns: (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.
*/
GdkPaintable *
gtk_icon_info_load_icon_finish (GtkIconInfo *icon_info,
GAsyncResult *result,
GError **error)
{
GTask *task = G_TASK (result);
GtkIconInfo *dup;
g_return_val_if_fail (g_task_is_valid (result, icon_info), NULL);
dup = g_task_get_task_data (task);
if (dup == NULL || g_task_had_error (task))
return g_task_propagate_pointer (task, error);
/* We ran the thread and it was not cancelled */
/* Check if someone else updated the icon_info in between */
if (!icon_info_get_pixbuf_ready (icon_info))
{
/* If not, copy results from dup back to icon_info */
icon_info->scale = dup->scale;
g_clear_object (&icon_info->texture);
if (dup->texture)
icon_info->texture = g_object_ref (dup->texture);
g_clear_error (&icon_info->load_error);
if (dup->load_error)
icon_info->load_error = g_error_copy (dup->load_error);
}
g_assert (icon_info_get_pixbuf_ready (icon_info));
/* This is now guaranteed to not block */
return gtk_icon_info_load_icon (icon_info, error);
}
static GdkPixbuf *
gtk_icon_info_load_symbolic_png (GtkIconInfo *icon_info,
const GdkRGBA *fg,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color,
GError **error)
{
GdkRGBA fg_default = { 0.7450980392156863, 0.7450980392156863, 0.7450980392156863, 1.0};
GdkRGBA success_default = { 0.3046921492332342,0.6015716792553597, 0.023437857633325704, 1.0};
GdkRGBA warning_default = {0.9570458533607996, 0.47266346227206835, 0.2421911955443656, 1.0 };
GdkRGBA error_default = { 0.796887159533074, 0 ,0, 1.0 };
GdkPixbuf *pixbuf;
GdkPixbuf *colored;
if (!icon_info_ensure_scale_and_texture (icon_info))
{
if (icon_info->load_error)
{
if (error)
*error = g_error_copy (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;
}
pixbuf = gdk_pixbuf_get_from_texture (icon_info->texture);
colored = gtk_color_symbolic_pixbuf (pixbuf,
fg ? fg : &fg_default,
success_color ? success_color : &success_default,
warning_color ? warning_color : &warning_default,
error_color ? error_color : &error_default);
g_object_unref (pixbuf);
return colored;
}
#define MAX_RGB_STRING_LENGTH (3 + 1 + ((3 + 1) * 3) + 1 + 1)
static inline void
rgba_to_string_noalpha (const GdkRGBA *rgba,
char *buff)
{
/* gdk_rgba_to_string inlined in here for the alpha == 1 case,
* and g_strdup_printf replaced with g_snprintf */
g_snprintf (buff,
MAX_RGB_STRING_LENGTH,
"rgb(%d,%d,%d)",
(int)(0.5 + CLAMP (rgba->red, 0., 1.) * 255.),
(int)(0.5 + CLAMP (rgba->green, 0., 1.) * 255.),
(int)(0.5 + CLAMP (rgba->blue, 0., 1.) * 255.));
}
static GdkPixbuf *
gtk_icon_info_load_symbolic_svg (GtkIconInfo *icon_info,
const GdkRGBA *fg,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color,
GError **error)
{
GInputStream *stream;
GdkPixbuf *pixbuf;
char css_fg[MAX_RGB_STRING_LENGTH];
char css_warning[MAX_RGB_STRING_LENGTH] = "rgb(245,121,62)";
char css_success[MAX_RGB_STRING_LENGTH] = "rgb(78,154,6)";
char css_error[MAX_RGB_STRING_LENGTH] = "rgb(204,0,0)";
gchar *svg_data;
gchar *width;
gchar *height;
char *escaped_file_data;
gint symbolic_size;
double alpha;
gchar alphastr[G_ASCII_DTOSTR_BUF_SIZE];
alpha = fg->alpha;
rgba_to_string_noalpha (fg, css_fg);
if (warning_color)
rgba_to_string_noalpha (warning_color, css_warning);
if (error_color)
rgba_to_string_noalpha (error_color, css_error);
if (success_color)
rgba_to_string_noalpha (success_color, css_success);
if (icon_info->is_resource)
{
GBytes *bytes;
const char *data;
gsize file_len;
bytes = g_resources_lookup_data (icon_info->filename, G_RESOURCE_LOOKUP_FLAGS_NONE, error);
if (bytes == NULL)
return NULL;
data = g_bytes_get_data (bytes, &file_len);
escaped_file_data = g_base64_encode ((guchar *) data, file_len);
g_bytes_unref (bytes);
}
else
{
char *file_data;
gsize file_len;
if (!g_file_get_contents (icon_info->filename, &file_data, &file_len, error))
return NULL;
escaped_file_data = g_base64_encode ((guchar *) file_data, file_len);
g_free (file_data);
}
if (!icon_info_ensure_scale_and_texture (icon_info))
{
g_propagate_error (error, icon_info->load_error);
icon_info->load_error = NULL;
g_free (escaped_file_data);
return NULL;
}
if (icon_info->symbolic_width == 0 ||
icon_info->symbolic_height == 0)
{
/* Fetch size from the original icon */
if (icon_info->is_resource)
pixbuf = gdk_pixbuf_new_from_resource (icon_info->filename, error);
else
pixbuf = gdk_pixbuf_new_from_file (icon_info->filename, error);
if (!pixbuf)
{
g_free (escaped_file_data);
return NULL;
}
icon_info->symbolic_width = gdk_pixbuf_get_width (pixbuf);
icon_info->symbolic_height = gdk_pixbuf_get_height (pixbuf);
g_object_unref (pixbuf);
}
symbolic_size = MAX (icon_info->symbolic_width, icon_info->symbolic_height);
GTK_NOTE (ICONTHEME,
if (icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
g_message ("Symbolic icon %s is not in an icon theme directory",
icon_info->key.icon_names ? icon_info->key.icon_names[0] : icon_info->filename);
else if (icon_info->dir_size * icon_info->dir_scale != symbolic_size)
g_message ("Symbolic icon %s of size %d is in an icon theme directory of size %d",
icon_info->key.icon_names ? icon_info->key.icon_names[0] : icon_info->filename,
symbolic_size,
icon_info->dir_size * icon_info->dir_scale)
);
width = g_strdup_printf ("%d", icon_info->symbolic_width);
height = g_strdup_printf ("%d", icon_info->symbolic_height);
g_ascii_dtostr (alphastr, G_ASCII_DTOSTR_BUF_SIZE, CLAMP (alpha, 0, 1));
svg_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,ellipse,circle,polygon {\n"
" fill: ", css_fg," !important;\n"
" }\n"
" .warning {\n"
" fill: ", css_warning, " !important;\n"
" }\n"
" .error {\n"
" fill: ", css_error ," !important;\n"
" }\n"
" .success {\n"
" fill: ", css_success, " !important;\n"
" }\n"
" </style>\n"
" <g opacity=\"", alphastr, "\" ><xi:include href=\"data:text/xml;base64,", escaped_file_data, "\"/></g>\n"
"</svg>",
NULL);
g_free (escaped_file_data);
g_free (width);
g_free (height);
stream = g_memory_input_stream_new_from_data (svg_data, -1, g_free);
pixbuf = _gdk_pixbuf_new_from_stream_at_scale (stream,
"svg",
gdk_texture_get_width (icon_info->texture),
gdk_texture_get_height (icon_info->texture),
TRUE,
NULL,
error);
g_object_unref (stream);
return pixbuf;
}
static GdkPixbuf *
gtk_icon_info_load_symbolic_internal (GtkIconInfo *icon_info,
const GdkRGBA *fg,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color,
GError **error)
{
GdkPixbuf *pixbuf;
if (g_str_has_suffix (icon_info->filename, ".symbolic.png"))
pixbuf = gtk_icon_info_load_symbolic_png (icon_info, fg, success_color, warning_color, error_color, error);
else
pixbuf = gtk_icon_info_load_symbolic_svg (icon_info, fg, success_color, warning_color, error_color, error);
return pixbuf;
}
/**
* gtk_icon_info_load_symbolic:
* @self: 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 [Symbolic Icons Specification](http://www.freedesktop.org/wiki/SymbolicIcons)
* for more information about symbolic icons.
*
* Returns: (transfer full): a #GdkPixbuf representing the loaded icon
*/
GdkPaintable *
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;
gboolean is_symbolic;
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (fg != NULL, NULL);
is_symbolic = gtk_icon_info_is_symbolic (icon_info);
if (was_symbolic)
*was_symbolic = is_symbolic;
if (!is_symbolic)
return gtk_icon_info_load_icon (icon_info, error);
pixbuf = gtk_icon_info_load_symbolic_internal (icon_info,
fg, success_color,
warning_color, error_color,
error);
if (pixbuf)
{
GdkTexture *texture = gdk_texture_new_for_pixbuf (pixbuf);
g_object_unref (pixbuf);
return GDK_PAINTABLE (texture);
}
return NULL;
}
void
gtk_icon_theme_lookup_symbolic_colors (GtkCssStyle *style,
GdkRGBA *color_out,
GdkRGBA *success_out,
GdkRGBA *warning_out,
GdkRGBA *error_out)
{
GtkCssValue *palette, *color;
const GdkRGBA *lookup;
color = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_COLOR);
palette = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_PALETTE);
*color_out = *_gtk_css_rgba_value_get_rgba (color);
lookup = gtk_css_palette_value_get_color (palette, "success");
if (lookup)
*success_out = *lookup;
else
*success_out = *color_out;
lookup = gtk_css_palette_value_get_color (palette, "warning");
if (lookup)
*warning_out = *lookup;
else
*warning_out = *color_out;
lookup = gtk_css_palette_value_get_color (palette, "error");
if (lookup)
*error_out = *lookup;
else
*error_out = *color_out;
}
/**
* gtk_icon_info_load_symbolic_for_context:
* @self: a #GtkIconInfo
* @context: a #GtkStyleContext
* @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
* loaded icon was a symbolic one and whether the foreground 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.
*
* Returns: (transfer full) (nullable): a #GdkPixbuf representing the loaded icon
* or %NULL If the icon could not be loaded
*/
GdkPaintable *
gtk_icon_info_load_symbolic_for_context (GtkIconInfo *icon_info,
GtkStyleContext *context,
gboolean *was_symbolic,
GError **error)
{
GdkRGBA fg;
GdkRGBA success_color;
GdkRGBA warning_color;
GdkRGBA error_color;
gboolean is_symbolic;
GdkPixbuf *pixbuf;
g_return_val_if_fail (icon_info != NULL, NULL);
g_return_val_if_fail (context != NULL, NULL);
is_symbolic = gtk_icon_info_is_symbolic (icon_info);
if (was_symbolic)
*was_symbolic = is_symbolic;
if (!is_symbolic)
return gtk_icon_info_load_icon (icon_info, error);
gtk_icon_theme_lookup_symbolic_colors (gtk_style_context_lookup_style (context),
&fg, &success_color,
&warning_color, &error_color);
pixbuf = gtk_icon_info_load_symbolic_internal (icon_info,
&fg, &success_color,
&warning_color, &error_color,
error);
if (pixbuf)
{
GdkTexture *texture = gdk_texture_new_for_pixbuf (pixbuf);
g_object_unref (pixbuf);
return GDK_PAINTABLE (texture);
}
return NULL;
}
typedef struct {
guint is_symbolic : 1;
guint success_color_set : 1;
guint warning_color_set : 1;
guint error_color_set : 1;
guint fg_set : 1;
GtkIconInfo *dup;
GdkRGBA fg;
GdkRGBA success_color;
GdkRGBA warning_color;
GdkRGBA error_color;
} AsyncSymbolicData;
static void
async_symbolic_data_free (AsyncSymbolicData *data)
{
if (data->dup)
g_object_unref (data->dup);
g_slice_free (AsyncSymbolicData, data);
}
static void
async_load_no_symbolic_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GtkIconInfo *icon_info = GTK_ICON_INFO (source_object);
GTask *task = user_data;
GError *error = NULL;
GdkPaintable *paintable;
paintable = gtk_icon_info_load_icon_finish (icon_info, res, &error);
if (paintable == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, paintable, g_object_unref);
g_object_unref (task);
}
static void
load_symbolic_icon_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
AsyncSymbolicData *data = task_data;
GError *error;
GdkPixbuf *pixbuf;
error = NULL;
pixbuf = gtk_icon_info_load_symbolic_internal (data->dup,
data->fg_set ? &data->fg : NULL,
data->success_color_set ? &data->success_color : NULL,
data->warning_color_set ? &data->warning_color : NULL,
data->error_color_set ? &data->error_color : NULL,
&error);
if (pixbuf == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, pixbuf, g_object_unref);
}
/**
* gtk_icon_info_load_symbolic_async:
* @self: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
* @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)
* @cancellable: (allow-none): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call when the
* request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously load, render and scale a symbolic icon previously looked up
* from the icon theme using gtk_icon_theme_lookup_icon().
*
* For more details, see gtk_icon_info_load_symbolic() which is the synchronous
* version of this call.
*/
void
gtk_icon_info_load_symbolic_async (GtkIconInfo *icon_info,
const GdkRGBA *fg,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
AsyncSymbolicData *data;
g_return_if_fail (icon_info != NULL);
g_return_if_fail (fg != NULL);
task = g_task_new (icon_info, cancellable, callback, user_data);
data = g_slice_new0 (AsyncSymbolicData);
g_task_set_task_data (task, data, (GDestroyNotify) async_symbolic_data_free);
data->is_symbolic = gtk_icon_info_is_symbolic (icon_info);
if (!data->is_symbolic)
{
gtk_icon_info_load_icon_async (icon_info, cancellable, async_load_no_symbolic_cb, g_object_ref (task));
}
else
{
if (fg)
{
data->fg = *fg;
data->fg_set = TRUE;
}
if (success_color)
{
data->success_color = *success_color;
data->success_color_set = TRUE;
}
if (warning_color)
{
data->warning_color = *warning_color;
data->warning_color_set = TRUE;
}
if (error_color)
{
data->error_color = *error_color;
data->error_color_set = TRUE;
}
data->dup = icon_info_dup (icon_info);
g_task_run_in_thread (task, load_symbolic_icon_thread);
}
g_object_unref (task);
}
/**
* gtk_icon_info_load_symbolic_finish:
* @self: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
* @res: a #GAsyncResult
* @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.
*
* Finishes an async icon load, see gtk_icon_info_load_symbolic_async().
*
* Returns: (transfer full): the rendered icon;
* Use g_object_unref() to release your reference
* to the icon.
*/
GdkPaintable *
gtk_icon_info_load_symbolic_finish (GtkIconInfo *icon_info,
GAsyncResult *result,
gboolean *was_symbolic,
GError **error)
{
GTask *task = G_TASK (result);
AsyncSymbolicData *data = g_task_get_task_data (task);
GdkPixbuf *pixbuf;
GdkTexture *texture;
if (was_symbolic)
*was_symbolic = data->is_symbolic;
if (data->dup && !g_task_had_error (task))
{
pixbuf = g_task_propagate_pointer (task, NULL);
g_assert (pixbuf != NULL); /* we checked for !had_error above */
}
else
{
pixbuf = g_task_propagate_pointer (task, error);
}
texture = gdk_texture_new_for_pixbuf (pixbuf);
g_object_unref (pixbuf);
return GDK_PAINTABLE (texture);
}
/**
* gtk_icon_info_load_symbolic_for_context_async:
* @self: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
* @context: a #GtkStyleContext
* @cancellable: (allow-none): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call when the
* request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously load, render and scale a symbolic icon previously
* looked up from the icon theme using gtk_icon_theme_lookup_icon().
*
* For more details, see gtk_icon_info_load_symbolic_for_context()
* which is the synchronous version of this call.
*/
void
gtk_icon_info_load_symbolic_for_context_async (GtkIconInfo *icon_info,
GtkStyleContext *context,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GdkRGBA fg;
GdkRGBA success_color;
GdkRGBA warning_color;
GdkRGBA error_color;
g_return_if_fail (icon_info != NULL);
g_return_if_fail (context != NULL);
gtk_icon_theme_lookup_symbolic_colors (gtk_style_context_lookup_style (context),
&fg, &success_color,
&warning_color, &error_color);
gtk_icon_info_load_symbolic_async (icon_info,
&fg, &success_color,
&warning_color, &error_color,
cancellable, callback, user_data);
}
/**
* gtk_icon_info_load_symbolic_for_context_finish:
* @self: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
* @res: a #GAsyncResult
* @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.
*
* Finishes an async icon load, see gtk_icon_info_load_symbolic_for_context_async().
*
* Returns: (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.
*/
GdkPaintable *
gtk_icon_info_load_symbolic_for_context_finish (GtkIconInfo *icon_info,
GAsyncResult *result,
gboolean *was_symbolic,
GError **error)
{
return gtk_icon_info_load_symbolic_finish (icon_info, result, was_symbolic, error);
}
/**
* gtk_icon_theme_lookup_by_gicon:
* @self: 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 #GtkIconInfo containing information
* such as the filename of the icon. The icon can then be rendered
* into a pixbuf using gtk_icon_info_load_icon().
*
* When rendering on displays with high pixel densities you should not
* use a @size multiplied by the scaling factor returned by functions
* like gdk_surface_get_scale_factor(). Instead, you should use
* gtk_icon_theme_lookup_by_gicon_for_scale(), as the assets loaded
* for a given scaling factor may be different.
*
* Returns: (nullable) (transfer full): a #GtkIconInfo containing
* information about the icon, or %NULL if the icon wasn’t
* found. Unref with g_object_unref()
*/
GtkIconInfo *
gtk_icon_theme_lookup_by_gicon (GtkIconTheme *self,
GIcon *icon,
gint size,
GtkIconLookupFlags flags)
{
return gtk_icon_theme_lookup_by_gicon_for_scale (self, icon,
size, 1, flags);
}
static GtkIconInfo *
gtk_icon_info_new_for_file (GFile *file,
gint size,
gint scale)
{
GtkIconInfo *info;
info = icon_info_new (ICON_THEME_DIR_UNTHEMED, size, 1);
info->loadable = G_LOADABLE_ICON (g_file_icon_new (file));
info->is_resource = g_file_has_uri_scheme (file, "resource");
if (info->is_resource)
{
gchar *uri;
uri = g_file_get_uri (file);
info->filename = g_strdup (uri + 11); /* resource:// */
g_free (uri);
}
else
{
info->filename = g_file_get_path (file);
}
info->is_svg = suffix_from_name (info->filename) == ICON_SUFFIX_SVG;
info->desired_size = size;
info->desired_scale = scale;
info->forced_size = FALSE;
return info;
}
static GtkIconInfo *
gtk_icon_info_new_for_pixbuf (GtkIconTheme *icon_theme,
GdkPixbuf *pixbuf)
{
GtkIconInfo *info;
info = icon_info_new (ICON_THEME_DIR_UNTHEMED, 0, 1);
info->texture = gdk_texture_new_for_pixbuf (pixbuf);
info->scale = 1.0;
return info;
}
/**
* gtk_icon_theme_lookup_by_gicon_for_scale:
* @self: a #GtkIconTheme
* @icon: the #GIcon to look up
* @size: desired icon size
* @scale: the desired scale
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up an icon and returns a #GtkIconInfo containing information
* such as the filename of the icon. The icon can then be rendered into
* a pixbuf using gtk_icon_info_load_icon().
*
* Returns: (nullable) (transfer full): a #GtkIconInfo containing
* information about the icon, or %NULL if the icon wasn’t
* found. Unref with g_object_unref()
*/
GtkIconInfo *
gtk_icon_theme_lookup_by_gicon_for_scale (GtkIconTheme *self,
GIcon *icon,
gint size,
gint scale,
GtkIconLookupFlags flags)
{
GtkIconInfo *info;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
g_return_val_if_fail (G_IS_ICON (icon), NULL);
g_warn_if_fail ((flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK) == 0);
if (GDK_IS_PIXBUF (icon))
{
GdkPixbuf *pixbuf;
pixbuf = GDK_PIXBUF (icon);
if ((flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0)
{
gint width, height, max;
gdouble pixbuf_scale;
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
max = MAX (width, height);
pixbuf_scale = (gdouble) size * scale / (gdouble) max;
if (pixbuf_scale != 1.0)
{
GdkPixbuf *scaled;
scaled = gdk_pixbuf_scale_simple (pixbuf,
0.5 + width * pixbuf_scale,
0.5 + height * pixbuf_scale,
GDK_INTERP_BILINEAR);
info = gtk_icon_info_new_for_pixbuf (self, scaled);
g_object_unref (scaled);
}
else
{
info = gtk_icon_info_new_for_pixbuf (self, pixbuf);
}
}
else
{
info = gtk_icon_info_new_for_pixbuf (self, pixbuf);
}
return info;
}
else if (G_IS_FILE_ICON (icon))
{
GFile *file = g_file_icon_get_file (G_FILE_ICON (icon));
info = gtk_icon_info_new_for_file (file, size, scale);
info->forced_size = (flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0;
return info;
}
else if (G_IS_LOADABLE_ICON (icon))
{
info = icon_info_new (ICON_THEME_DIR_UNTHEMED, size, 1);
info->loadable = G_LOADABLE_ICON (g_object_ref (icon));
info->is_svg = FALSE;
info->desired_size = size;
info->desired_scale = scale;
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_for_scale (self, names, size, scale, flags);
return info;
}
return NULL;
}
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