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gtk2/gtk/gtkicontheme.c
Matthias Clasen 88d26b7549 Ensure icon themes are loaded with other themes 
Trigger icon theme loading from the code in GtkApplication
where we set up the icon theme search path. This makes
it happen before the first frame.
2020-01-22 23:44:01 -05:00

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/* GtkIconTheme - a loader for icon themes
* gtk-icon-theme.c Copyright (C) 2002, 2003 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, 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 "gtkcsscolorvalueprivate.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"
#include "gdk/gdkprofilerprivate.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;
gint64 before = g_get_monotonic_time ();
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);
});
self->loading_themes = FALSE;
gdk_profiler_add_mark (before * 1000, (g_get_monotonic_time () - before) * 1000, "icon theme load", self->current_theme);
}
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);
}
}
void
gtk_icon_theme_ensure_loaded (GtkIconTheme *self)
{
ensure_valid_themes (self);
}
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);
}
gdk_profiler_add_mark (g_get_monotonic_time () * 1000, 0, "icon load", icon_info->filename);
/* 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;
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);
}
GTK_NOTE (ICONTHEME, {
int symbolic_size = MAX (icon_info->symbolic_width, icon_info->symbolic_height);
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_color_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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