--- /dev/null
+/* 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 "st-icon-theme-private.h"
+#include "gtkcsspalettevalueprivate.h"
+#include "gtkcssrgbavalueprivate.h"
+#include "gtkdebug.h"
+#include "deprecated/gtkiconfactory.h"
+#include "st-icon-cache.h"
+#include "gtkintl.h"
+#include "gtkmain.h"
+#include "deprecated/gtknumerableiconprivate.h"
+#include "gtksettingsprivate.h"
+#include "gtkstylecontextprivate.h"
+#include "gtkprivate.h"
+#include "gdkpixbufutilsprivate.h"
+
+#undef GDK_DEPRECATED
+#undef GDK_DEPRECATED_FOR
+#define GDK_DEPRECATED
+#define GDK_DEPRECATED_FOR(f)
+
+#include "deprecated/gtkstyle.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.
+ *
+ * Named icons are similar to the deprecated [Stock Items][gtkstock],
+ * and the distinction between the two may be a bit confusing.
+ * A few things to keep in mind:
+ *
+ * - Stock images usually are used in conjunction with
+ * [Stock Items][gtkstock], such as %GTK_STOCK_OK or
+ * %GTK_STOCK_OPEN. Named icons are easier to set up and therefore
+ * are more useful for new icons that an application wants to
+ * add, such as application icons or window icons.
+ *
+ * - Stock images can only be loaded at the symbolic sizes defined
+ * by the #GtkIconSize enumeration, or by custom sizes defined
+ * by gtk_icon_size_register(), while named icons are more flexible
+ * and any pixel size can be specified.
+ *
+ * - Because stock images are closely tied to stock items, and thus
+ * to actions in the user interface, stock images may come in
+ * multiple variants for different widget states or writing
+ * directions.
+ *
+ * A good rule of thumb is that if there is a stock image for what
+ * you want to use, use it, otherwise use a named icon. It turns
+ * out that internally stock images are generally defined in
+ * terms of one or more named icons. (An example of the
+ * more than one case is icons that depend on writing direction;
+ * %GTK_STOCK_GO_FORWARD uses the two themed icons
+ * “gtk-stock-go-forward-ltr” and “gtk-stock-go-forward-rtl”.)
+ *
+ * In many cases, named themes are used indirectly, via #GtkImage
+ * or stock items, rather than directly, but looking up icons
+ * directly is also simple. The #GtkIconTheme object acts
+ * as a database of all the icons in the current theme. You
+ * can create new #GtkIconTheme objects, but it’s much more
+ * efficient to use the standard icon theme for the #GdkScreen
+ * so that the icon information is shared with other people
+ * looking up icons.
+ * |[<!-- language="C" -->
+ * GError *error = NULL;
+ * GtkIconTheme *icon_theme;
+ * GdkPixbuf *pixbuf;
+ *
+ * icon_theme = gtk_icon_theme_get_default ();
+ * pixbuf = gtk_icon_theme_load_icon (icon_theme,
+ * "my-icon-name", // icon name
+ * 48, // icon size
+ * 0, // flags
+ * &error);
+ * if (!pixbuf)
+ * {
+ * g_warning ("Couldn’t load icon: %s", error->message);
+ * g_error_free (error);
+ * }
+ * else
+ * {
+ * // Use the pixbuf
+ * g_object_unref (pixbuf);
+ * }
+ * ]|
+ */
+
+#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;
+
+#define INFO_CACHE_LRU_SIZE 32
+#if 0
+#define DEBUG_CACHE(args) g_print args
+#else
+#define DEBUG_CACHE(args)
+#endif
+
+struct _GtkIconThemePrivate
+{
+ GHashTable *info_cache;
+ GList *info_cache_lru;
+
+ gchar *current_theme;
+ gchar **search_path;
+ gint search_path_len;
+ GList *resource_paths;
+
+ guint custom_theme : 1;
+ guint is_screen_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;
+
+ /* GdkScreen for the icon theme (may be NULL) */
+ GdkScreen *screen;
+
+ /* time when we last stat:ed for theme changes */
+ glong last_stat_time;
+ GList *dir_mtimes;
+
+ gulong theme_changed_idle;
+};
+
+typedef struct {
+ gchar **icon_names;
+ gint size;
+ gint scale;
+ GtkIconLookupFlags flags;
+} IconInfoKey;
+
+typedef struct _SymbolicPixbufCache SymbolicPixbufCache;
+
+struct _SymbolicPixbufCache {
+ GdkPixbuf *pixbuf;
+ GdkPixbuf *proxy_pixbuf;
+ GdkRGBA fg;
+ GdkRGBA success_color;
+ GdkRGBA warning_color;
+ GdkRGBA error_color;
+ SymbolicPixbufCache *next;
+};
+
+struct _GtkIconInfoClass
+{
+ GObjectClass parent_class;
+};
+
+struct _GtkIconInfo
+{
+ GObject parent_instance;
+
+ /* Information about the source
+ */
+ IconInfoKey key;
+ GtkIconTheme *in_cache;
+
+ gchar *filename;
+ GFile *icon_file;
+ GLoadableIcon *loadable;
+ GSList *emblem_infos;
+
+ /* 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 emblems_applied : 1;
+ guint is_svg : 1;
+ guint is_resource : 1;
+
+ /* Cached information if we go ahead and try to load
+ * the icon.
+ */
+ GdkPixbuf *pixbuf;
+ GdkPixbuf *proxy_pixbuf;
+ GError *load_error;
+ gdouble unscaled_scale;
+ gdouble scale;
+
+ SymbolicPixbufCache *symbolic_pixbuf_cache;
+
+ gint symbolic_width;
+ gint symbolic_height;
+};
+
+typedef struct
+{
+ gchar *name;
+ gchar *display_name;
+ gchar *comment;
+ gchar *example;
+
+ /* 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
+{
+ gint size;
+ GdkPixbuf *pixbuf;
+} BuiltinIcon;
+
+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,
+ gboolean use_default_icons);
+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_list_contexts (IconTheme *theme,
+ GHashTable *contexts);
+static void theme_subdir_load (GtkIconTheme *icon_theme,
+ IconTheme *theme,
+ GKeyFile *theme_file,
+ gchar *subdir);
+static void do_theme_change (GtkIconTheme *icon_theme);
+static void blow_themes (GtkIconTheme *icon_themes);
+static gboolean rescan_themes (GtkIconTheme *icon_themes);
+static IconSuffix theme_dir_get_icon_suffix (IconThemeDir *dir,
+ const gchar *icon_name,
+ gboolean *has_icon_file);
+static GtkIconInfo *icon_info_new (IconThemeDirType type,
+ gint dir_size,
+ gint dir_scale);
+static GtkIconInfo *icon_info_new_builtin (BuiltinIcon *icon);
+static IconSuffix suffix_from_name (const gchar *name);
+static BuiltinIcon *find_builtin_icon (const gchar *icon_name,
+ gint size,
+ gint scale,
+ gint *min_difference_p);
+static void remove_from_lru_cache (GtkIconTheme *icon_theme,
+ GtkIconInfo *icon_info);
+static gboolean icon_info_ensure_scale_and_pixbuf (GtkIconInfo* icon_info);
+
+static guint signal_changed = 0;
+
+static GHashTable *icon_theme_builtin_icons;
+
+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_WITH_PRIVATE (GtkIconTheme, gtk_icon_theme, G_TYPE_OBJECT)
+
+/**
+ * gtk_icon_theme_new:
+ *
+ * Creates a new icon theme object. Icon theme objects are used
+ * to lookup up an icon by name in a particular icon theme.
+ * Usually, you’ll want to use gtk_icon_theme_get_default()
+ * or gtk_icon_theme_get_for_screen() rather than creating
+ * a new icon theme object for scratch.
+ *
+ * Returns: the newly created #GtkIconTheme object.
+ *
+ * Since: 2.4
+ */
+GtkIconTheme *
+gtk_icon_theme_new (void)
+{
+ return g_object_new (GTK_TYPE_ICON_THEME, NULL);
+}
+
+/**
+ * gtk_icon_theme_get_default:
+ *
+ * Gets the icon theme for the default screen. See
+ * gtk_icon_theme_get_for_screen().
+ *
+ * Returns: (transfer none): A unique #GtkIconTheme associated with
+ * the default screen. This icon theme is associated with
+ * the screen and can be used as long as the screen
+ * is open. Do not ref or unref it.
+ *
+ * Since: 2.4
+ */
+GtkIconTheme *
+gtk_icon_theme_get_default (void)
+{
+ return gtk_icon_theme_get_for_screen (gdk_screen_get_default ());
+}
+
+/**
+ * gtk_icon_theme_get_for_screen:
+ * @screen: a #GdkScreen
+ *
+ * Gets the icon theme object associated with @screen; if this
+ * function has not previously been called for the given
+ * screen, a new icon theme object will be created and
+ * associated with the screen. Icon theme objects are
+ * fairly expensive to create, so using this function
+ * is usually a better choice than calling than gtk_icon_theme_new()
+ * and setting the screen yourself; by using this function
+ * a single icon theme object will be shared between users.
+ *
+ * Returns: (transfer none): A unique #GtkIconTheme associated with
+ * the given screen. This icon theme is associated with
+ * the screen and can be used as long as the screen
+ * is open. Do not ref or unref it.
+ *
+ * Since: 2.4
+ */
+GtkIconTheme *
+gtk_icon_theme_get_for_screen (GdkScreen *screen)
+{
+ GtkIconTheme *icon_theme;
+
+ g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
+
+ icon_theme = g_object_get_data (G_OBJECT (screen), "gtk-icon-theme");
+ if (!icon_theme)
+ {
+ GtkIconThemePrivate *priv;
+
+ icon_theme = gtk_icon_theme_new ();
+ gtk_icon_theme_set_screen (icon_theme, screen);
+
+ priv = icon_theme->priv;
+ priv->is_screen_singleton = TRUE;
+
+ g_object_set_data (G_OBJECT (screen), I_("gtk-icon-theme"), icon_theme);
+ }
+
+ return icon_theme;
+}
+
+static void
+gtk_icon_theme_class_init (GtkIconThemeClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ gobject_class->finalize = gtk_icon_theme_finalize;
+
+ /**
+ * GtkIconTheme::changed:
+ * @icon_theme: the icon theme
+ *
+ * Emitted when the current icon theme is switched or GTK+ detects
+ * that a change has occurred in the contents of the current
+ * icon theme.
+ */
+ signal_changed = g_signal_new (I_("changed"),
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GtkIconThemeClass, changed),
+ NULL, NULL,
+ NULL,
+ G_TYPE_NONE, 0);
+}
+
+
+/* Callback when the display that the icon theme is attached
+ * to is closed; unset the screen, and if it’s the unique theme
+ * for the screen, drop the reference
+ */
+static void
+display_closed (GdkDisplay *display,
+ gboolean is_error,
+ GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ GdkScreen *screen = priv->screen;
+ gboolean was_screen_singleton = priv->is_screen_singleton;
+
+ if (was_screen_singleton)
+ {
+ g_object_set_data (G_OBJECT (screen), I_("gtk-icon-theme"), NULL);
+ priv->is_screen_singleton = FALSE;
+ }
+
+ gtk_icon_theme_set_screen (icon_theme, NULL);
+
+ if (was_screen_singleton)
+ {
+ g_object_unref (icon_theme);
+ }
+}
+
+static void
+update_current_theme (GtkIconTheme *icon_theme)
+{
+#define theme_changed(_old, _new) \
+ ((_old && !_new) || (!_old && _new) || \
+ (_old && _new && strcmp (_old, _new) != 0))
+ GtkIconThemePrivate *priv = icon_theme->priv;
+
+ if (!priv->custom_theme)
+ {
+ gchar *theme = NULL;
+ gboolean changed = FALSE;
+
+ if (priv->screen)
+ {
+ GtkSettings *settings = gtk_settings_get_for_screen (priv->screen);
+ g_object_get (settings, "gtk-icon-theme-name", &theme, NULL);
+ }
+
+ if (theme_changed (priv->current_theme, theme))
+ {
+ g_free (priv->current_theme);
+ priv->current_theme = theme;
+ changed = TRUE;
+ }
+ else
+ g_free (theme);
+
+ if (changed)
+ do_theme_change (icon_theme);
+ }
+#undef theme_changed
+}
+
+/* Callback when the icon theme GtkSetting changes
+ */
+static void
+theme_changed (GtkSettings *settings,
+ GParamSpec *pspec,
+ GtkIconTheme *icon_theme)
+{
+ update_current_theme (icon_theme);
+}
+
+static void
+unset_screen (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ GtkSettings *settings;
+ GdkDisplay *display;
+
+ if (priv->screen)
+ {
+ settings = gtk_settings_get_for_screen (priv->screen);
+ display = gdk_screen_get_display (priv->screen);
+
+ g_signal_handlers_disconnect_by_func (display,
+ (gpointer) display_closed,
+ icon_theme);
+ if (settings)
+ g_signal_handlers_disconnect_by_func (settings,
+ (gpointer) theme_changed,
+ icon_theme);
+
+ priv->screen = NULL;
+ }
+}
+
+/**
+ * gtk_icon_theme_set_screen:
+ * @icon_theme: a #GtkIconTheme
+ * @screen: a #GdkScreen
+ *
+ * Sets the screen for an icon theme; the screen is used
+ * to track the user’s currently configured icon theme,
+ * which might be different for different screens.
+ *
+ * Since: 2.4
+ */
+void
+gtk_icon_theme_set_screen (GtkIconTheme *icon_theme,
+ GdkScreen *screen)
+{
+ GtkIconThemePrivate *priv;
+ GtkSettings *settings;
+ GdkDisplay *display;
+
+ g_return_if_fail (GTK_ICON_THEME (icon_theme));
+ g_return_if_fail (screen == NULL || GDK_IS_SCREEN (screen));
+
+ priv = icon_theme->priv;
+
+ unset_screen (icon_theme);
+
+ if (screen)
+ {
+ display = gdk_screen_get_display (screen);
+ settings = gtk_settings_get_for_screen (screen);
+
+ priv->screen = screen;
+
+ g_signal_connect (display, "closed",
+ G_CALLBACK (display_closed), icon_theme);
+ g_signal_connect (settings, "notify::gtk-icon-theme-name",
+ G_CALLBACK (theme_changed), icon_theme);
+ }
+
+ update_current_theme (icon_theme);
+}
+
+/* Checks whether a loader for SVG files has been registered
+ * with GdkPixbuf.
+ */
+static gboolean
+pixbuf_supports_svg (void)
+{
+ GSList *formats;
+ 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)
+{
+ GtkIconTheme *icon_theme = icon_info->in_cache;
+
+ 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,
+ icon_theme,
+ icon_theme != NULL ? g_hash_table_size (icon_theme->priv->info_cache) : 0));
+
+ icon_info->in_cache = NULL;
+
+ if (icon_theme != NULL)
+ remove_from_lru_cache (icon_theme, icon_info);
+}
+
+static void
+gtk_icon_theme_init (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv;
+ const gchar * const *xdg_data_dirs;
+ int i, j;
+
+ priv = gtk_icon_theme_get_instance_private (icon_theme);
+ icon_theme->priv = priv;
+
+ priv->info_cache = g_hash_table_new_full (icon_info_key_hash, icon_info_key_equal, NULL,
+ (GDestroyNotify)icon_info_uncached);
+
+ priv->custom_theme = FALSE;
+
+ xdg_data_dirs = g_get_system_data_dirs ();
+ for (i = 0; xdg_data_dirs[i]; i++) ;
+
+ priv->search_path_len = 2 * i + 2;
+
+ priv->search_path = g_new (char *, priv->search_path_len);
+
+ i = 0;
+ priv->search_path[i++] = g_build_filename (g_get_user_data_dir (), "icons", NULL);
+ priv->search_path[i++] = g_build_filename (g_get_home_dir (), ".icons", NULL);
+
+ for (j = 0; xdg_data_dirs[j]; j++)
+ priv->search_path[i++] = g_build_filename (xdg_data_dirs[j], "icons", NULL);
+
+ for (j = 0; xdg_data_dirs[j]; j++)
+ priv->search_path[i++] = g_build_filename (xdg_data_dirs[j], "pixmaps", NULL);
+
+ priv->resource_paths = g_list_append (NULL, g_strdup ("/org/gtk/libgtk/icons/"));
+
+ priv->themes_valid = FALSE;
+ priv->themes = NULL;
+ priv->unthemed_icons = NULL;
+
+ priv->pixbuf_supports_svg = pixbuf_supports_svg ();
+}
+
+static void
+free_dir_mtime (IconThemeDirMtime *dir_mtime)
+{
+ if (dir_mtime->cache)
+ _gtk_icon_cache_unref (dir_mtime->cache);
+
+ g_free (dir_mtime->dir);
+ g_slice_free (IconThemeDirMtime, dir_mtime);
+}
+
+static gboolean
+theme_changed_idle (gpointer user_data)
+{
+ GtkIconTheme *icon_theme;
+ GtkIconThemePrivate *priv;
+
+ icon_theme = GTK_ICON_THEME (user_data);
+ priv = icon_theme->priv;
+
+ g_signal_emit (icon_theme, signal_changed, 0);
+
+ if (priv->screen && priv->is_screen_singleton)
+ gtk_style_context_reset_widgets (priv->screen);
+
+ priv->theme_changed_idle = 0;
+
+ return FALSE;
+}
+
+static void
+queue_theme_changed (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+
+ if (!priv->theme_changed_idle)
+ {
+ priv->theme_changed_idle =
+ gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2,
+ theme_changed_idle, icon_theme, NULL);
+ g_source_set_name_by_id (priv->theme_changed_idle, "[gtk+] theme_changed_idle");
+ }
+}
+
+static void
+do_theme_change (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+
+ g_hash_table_remove_all (priv->info_cache);
+
+ if (!priv->themes_valid)
+ return;
+
+ GTK_NOTE (ICONTHEME,
+ g_message ("change to icon theme \"%s\"", priv->current_theme));
+ blow_themes (icon_theme);
+
+ queue_theme_changed (icon_theme);
+
+}
+
+static void
+blow_themes (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+
+ if (priv->themes_valid)
+ {
+ g_list_free_full (priv->themes, (GDestroyNotify) theme_destroy);
+ g_list_free_full (priv->dir_mtimes, (GDestroyNotify) free_dir_mtime);
+ g_hash_table_destroy (priv->unthemed_icons);
+ }
+ priv->themes = NULL;
+ priv->unthemed_icons = NULL;
+ priv->dir_mtimes = NULL;
+ priv->themes_valid = FALSE;
+}
+
+static void
+gtk_icon_theme_finalize (GObject *object)
+{
+ GtkIconTheme *icon_theme;
+ GtkIconThemePrivate *priv;
+ int i;
+
+ icon_theme = GTK_ICON_THEME (object);
+ priv = icon_theme->priv;
+
+ g_hash_table_destroy (priv->info_cache);
+ g_assert (priv->info_cache_lru == NULL);
+
+ if (priv->theme_changed_idle)
+ g_source_remove (priv->theme_changed_idle);
+
+ unset_screen (icon_theme);
+
+ g_free (priv->current_theme);
+
+ for (i = 0; i < priv->search_path_len; i++)
+ g_free (priv->search_path[i]);
+ g_free (priv->search_path);
+
+ g_list_free_full (priv->resource_paths, g_free);
+
+ blow_themes (icon_theme);
+
+ G_OBJECT_CLASS (gtk_icon_theme_parent_class)->finalize (object);
+}
+
+/**
+ * gtk_icon_theme_set_search_path:
+ * @icon_theme: a #GtkIconTheme
+ * @path: (array length=n_elements) (element-type filename): array of
+ * directories that are searched for icon themes
+ * @n_elements: number of elements in @path.
+ *
+ * Sets the search path for the icon theme object. When looking
+ * for an icon theme, GTK+ will search for a subdirectory of
+ * one or more of the directories in @path with the same name
+ * as the icon theme 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.)
+ *
+ * Since: 2.4
+ */
+void
+gtk_icon_theme_set_search_path (GtkIconTheme *icon_theme,
+ const gchar *path[],
+ gint n_elements)
+{
+ GtkIconThemePrivate *priv;
+ gint i;
+
+ g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
+
+ priv = icon_theme->priv;
+ for (i = 0; i < priv->search_path_len; i++)
+ g_free (priv->search_path[i]);
+
+ g_free (priv->search_path);
+
+ priv->search_path = g_new (gchar *, n_elements);
+ priv->search_path_len = n_elements;
+
+ for (i = 0; i < priv->search_path_len; i++)
+ priv->search_path[i] = g_strdup (path[i]);
+
+ do_theme_change (icon_theme);
+}
+
+/**
+ * gtk_icon_theme_get_search_path:
+ * @icon_theme: a #GtkIconTheme
+ * @path: (allow-none) (array length=n_elements) (element-type filename) (out):
+ * location to store a list of icon theme path directories or %NULL.
+ * The stored value should be freed with g_strfreev().
+ * @n_elements: location to store number of elements in @path, or %NULL
+ *
+ * Gets the current search path. See gtk_icon_theme_set_search_path().
+ *
+ * Since: 2.4
+ */
+void
+gtk_icon_theme_get_search_path (GtkIconTheme *icon_theme,
+ gchar **path[],
+ gint *n_elements)
+{
+ GtkIconThemePrivate *priv;
+ gint i;
+
+ g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
+
+ priv = icon_theme->priv;
+
+ if (n_elements)
+ *n_elements = priv->search_path_len;
+
+ if (path)
+ {
+ *path = g_new (gchar *, priv->search_path_len + 1);
+ for (i = 0; i < priv->search_path_len; i++)
+ (*path)[i] = g_strdup (priv->search_path[i]);
+ (*path)[i] = NULL;
+ }
+}
+
+/**
+ * gtk_icon_theme_append_search_path:
+ * @icon_theme: a #GtkIconTheme
+ * @path: (type filename): directory name to append to the icon path
+ *
+ * Appends a directory to the search path.
+ * See gtk_icon_theme_set_search_path().
+ *
+ * Since: 2.4
+ */
+void
+gtk_icon_theme_append_search_path (GtkIconTheme *icon_theme,
+ const gchar *path)
+{
+ GtkIconThemePrivate *priv;
+
+ g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
+ g_return_if_fail (path != NULL);
+
+ priv = icon_theme->priv;
+
+ priv->search_path_len++;
+
+ priv->search_path = g_renew (gchar *, priv->search_path, priv->search_path_len);
+ priv->search_path[priv->search_path_len-1] = g_strdup (path);
+
+ do_theme_change (icon_theme);
+}
+
+/**
+ * gtk_icon_theme_prepend_search_path:
+ * @icon_theme: a #GtkIconTheme
+ * @path: (type filename): directory name to prepend to the icon path
+ *
+ * Prepends a directory to the search path.
+ * See gtk_icon_theme_set_search_path().
+ *
+ * Since: 2.4
+ */
+void
+gtk_icon_theme_prepend_search_path (GtkIconTheme *icon_theme,
+ const gchar *path)
+{
+ GtkIconThemePrivate *priv;
+ gint i;
+
+ g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
+ g_return_if_fail (path != NULL);
+
+ priv = icon_theme->priv;
+
+ priv->search_path_len++;
+ priv->search_path = g_renew (gchar *, priv->search_path, priv->search_path_len);
+
+ for (i = priv->search_path_len - 1; i > 0; i--)
+ priv->search_path[i] = priv->search_path[i - 1];
+
+ priv->search_path[0] = g_strdup (path);
+
+ do_theme_change (icon_theme);
+}
+
+/**
+ * gtk_icon_theme_add_resource_path:
+ * @icon_theme: 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.
+ *
+ * Since: 3.14
+ */
+void
+gtk_icon_theme_add_resource_path (GtkIconTheme *icon_theme,
+ const gchar *path)
+{
+ GtkIconThemePrivate *priv = NULL;
+
+ g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
+ g_return_if_fail (path != NULL);
+
+ priv = icon_theme->priv;
+ priv->resource_paths = g_list_append (priv->resource_paths, g_strdup (path));
+
+ do_theme_change (icon_theme);
+}
+
+/**
+ * gtk_icon_theme_set_custom_theme:
+ * @icon_theme: a #GtkIconTheme
+ * @theme_name: (allow-none): name of icon theme to use instead of
+ * configured theme, or %NULL to unset a previously set custom theme
+ *
+ * Sets the name of the icon theme that the #GtkIconTheme object uses
+ * overriding system configuration. This function cannot be called
+ * on the icon theme objects returned from gtk_icon_theme_get_default()
+ * and gtk_icon_theme_get_for_screen().
+ *
+ * Since: 2.4
+ */
+void
+gtk_icon_theme_set_custom_theme (GtkIconTheme *icon_theme,
+ const gchar *theme_name)
+{
+ GtkIconThemePrivate *priv;
+
+ g_return_if_fail (GTK_IS_ICON_THEME (icon_theme));
+
+ priv = icon_theme->priv;
+
+ g_return_if_fail (!priv->is_screen_singleton);
+
+ if (theme_name != NULL)
+ {
+ priv->custom_theme = TRUE;
+ if (!priv->current_theme || strcmp (theme_name, priv->current_theme) != 0)
+ {
+ g_free (priv->current_theme);
+ priv->current_theme = g_strdup (theme_name);
+
+ do_theme_change (icon_theme);
+ }
+ }
+ else
+ {
+ if (priv->custom_theme)
+ {
+ priv->custom_theme = FALSE;
+ update_current_theme (icon_theme);
+ }
+ }
+}
+
+static 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 *icon_theme,
+ const gchar *theme_name)
+{
+ gint i;
+ GList *l;
+ gchar **dirs;
+ gchar **scaled_dirs;
+ gchar **themes;
+ GtkIconThemePrivate *priv;
+ IconTheme *theme = NULL;
+ gchar *path;
+ GKeyFile *theme_file;
+ GError *error = NULL;
+ IconThemeDirMtime *dir_mtime;
+ GStatBuf stat_buf;
+
+ priv = icon_theme->priv;
+
+ for (l = priv->themes; l != NULL; l = l->next)
+ {
+ theme = l->data;
+ if (strcmp (theme->name, theme_name) == 0)
+ return;
+ }
+
+ for (i = 0; i < priv->search_path_len; i++)
+ {
+ path = g_build_filename (priv->search_path[i],
+ theme_name,
+ NULL);
+ dir_mtime = g_slice_new (IconThemeDirMtime);
+ dir_mtime->cache = NULL;
+ dir_mtime->dir = path;
+ if (g_stat (path, &stat_buf) == 0 && S_ISDIR (stat_buf.st_mode)) {
+ dir_mtime->mtime = stat_buf.st_mtime;
+ dir_mtime->exists = TRUE;
+ } else {
+ dir_mtime->mtime = 0;
+ dir_mtime->exists = FALSE;
+ }
+
+ priv->dir_mtimes = g_list_prepend (priv->dir_mtimes, dir_mtime);
+ }
+
+ theme_file = NULL;
+ for (i = 0; i < priv->search_path_len && !theme_file; i++)
+ {
+ path = g_build_filename (priv->search_path[i],
+ theme_name,
+ "index.theme",
+ NULL);
+ if (g_file_test (path, G_FILE_TEST_IS_REGULAR))
+ {
+ theme_file = g_key_file_new ();
+ g_key_file_set_list_separator (theme_file, ',');
+ 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);
+ priv->themes = g_list_prepend (priv->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);
+ priv->themes = g_list_remove (priv->themes, theme);
+ g_free (theme->name);
+ g_free (theme->display_name);
+ g_free (theme);
+ g_key_file_free (theme_file);
+ return;
+ }
+
+ 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->example =
+ g_key_file_get_string (theme_file,
+ "Icon Theme", "Example",
+ NULL);
+
+ theme->dirs = NULL;
+ for (i = 0; dirs[i] != NULL; i++)
+ theme_subdir_load (icon_theme, theme, theme_file, dirs[i]);
+
+ if (scaled_dirs)
+ {
+ for (i = 0; scaled_dirs[i] != NULL; i++)
+ theme_subdir_load (icon_theme, 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 (icon_theme, themes[i]);
+
+ g_strfreev (themes);
+ }
+
+ g_key_file_free (theme_file);
+}
+
+static void
+free_unthemed_icon (UnthemedIcon *unthemed_icon)
+{
+ g_free (unthemed_icon->svg_filename);
+ g_free (unthemed_icon->no_svg_filename);
+ g_slice_free (UnthemedIcon, unthemed_icon);
+}
+
+static 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 *icon_theme,
+ const gchar *dir,
+ const gchar *file,
+ gboolean is_resource)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ 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 (priv->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 (priv->unthemed_icons, base_name, unthemed_icon);
+ }
+}
+
+static void
+load_themes (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv;
+ GDir *gdir;
+ gint base;
+ gchar *dir;
+ const gchar *file;
+ GTimeVal tv;
+ IconThemeDirMtime *dir_mtime;
+ GStatBuf stat_buf;
+ GList *d;
+
+ priv = icon_theme->priv;
+
+ if (priv->current_theme)
+ insert_theme (icon_theme, priv->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.
+ */
+ insert_theme (icon_theme, DEFAULT_ICON_THEME);
+ insert_theme (icon_theme, "gnome");
+ insert_theme (icon_theme, FALLBACK_ICON_THEME);
+ priv->themes = g_list_reverse (priv->themes);
+
+
+ priv->unthemed_icons = g_hash_table_new_full (g_str_hash, g_str_equal,
+ g_free, (GDestroyNotify)free_unthemed_icon);
+
+ for (base = 0; base < icon_theme->priv->search_path_len; base++)
+ {
+ dir = icon_theme->priv->search_path[base];
+
+ dir_mtime = g_slice_new (IconThemeDirMtime);
+ priv->dir_mtimes = g_list_prepend (priv->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 (icon_theme, dir, file, FALSE);
+
+ g_dir_close (gdir);
+ }
+ priv->dir_mtimes = g_list_reverse (priv->dir_mtimes);
+
+ for (d = priv->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 (icon_theme, dir, children[i], TRUE);
+
+ g_strfreev (children);
+ }
+
+ priv->themes_valid = TRUE;
+
+ g_get_current_time (&tv);
+ priv->last_stat_time = tv.tv_sec;
+
+ GTK_NOTE (ICONTHEME, {
+ GList *l;
+ GString *s;
+ s = g_string_new ("Current icon themes ");
+ for (l = icon_theme->priv->themes; l; l = l->next)
+ {
+ IconTheme *theme = l->data;
+ g_string_append (s, theme->name);
+ g_string_append_c (s, ' ');
+ }
+ g_message ("%s", s->str);
+ g_string_free (s, TRUE);
+ });
+}
+
+static void
+ensure_valid_themes (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ GTimeVal tv;
+ gboolean was_valid = priv->themes_valid;
+
+ if (priv->loading_themes)
+ return;
+ priv->loading_themes = TRUE;
+
+ if (priv->themes_valid)
+ {
+ g_get_current_time (&tv);
+
+ if (ABS (tv.tv_sec - priv->last_stat_time) > 5 &&
+ rescan_themes (icon_theme))
+ {
+ g_hash_table_remove_all (priv->info_cache);
+ blow_themes (icon_theme);
+ }
+ }
+
+ if (!priv->themes_valid)
+ {
+ load_themes (icon_theme);
+
+ if (was_valid)
+ queue_theme_changed (icon_theme);
+ }
+
+ priv->loading_themes = FALSE;
+}
+
+/* The LRU cache is a short list of IconInfos that are kept
+ * alive even though their IconInfo would otherwise have
+ * been freed, so that we can avoid reloading these
+ * constantly.
+ * We put infos on the lru list when nothing otherwise
+ * references the info. So, when we get a cache hit
+ * we remove it from the list, and when the proxy
+ * pixmap is released we put it on the list.
+ */
+static void
+ensure_lru_cache_space (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ GList *l;
+
+ /* Remove last item if LRU full */
+ l = g_list_nth (priv->info_cache_lru, INFO_CACHE_LRU_SIZE - 1);
+ if (l)
+ {
+ GtkIconInfo *icon_info = l->data;
+
+ DEBUG_CACHE (("removing (due to out of space) %p (%s %d 0x%x) from LRU cache (cache size %d)\n",
+ icon_info,
+ g_strjoinv (",", icon_info->key.icon_names),
+ icon_info->key.size, icon_info->key.flags,
+ g_list_length (priv->info_cache_lru)));
+
+ priv->info_cache_lru = g_list_delete_link (priv->info_cache_lru, l);
+ g_object_unref (icon_info);
+ }
+}
+
+static void
+add_to_lru_cache (GtkIconTheme *icon_theme,
+ GtkIconInfo *icon_info)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+
+ DEBUG_CACHE (("adding %p (%s %d 0x%x) to LRU cache (cache size %d)\n",
+ icon_info,
+ g_strjoinv (",", icon_info->key.icon_names),
+ icon_info->key.size, icon_info->key.flags,
+ g_list_length (priv->info_cache_lru)));
+
+ g_assert (g_list_find (priv->info_cache_lru, icon_info) == NULL);
+
+ ensure_lru_cache_space (icon_theme);
+ /* prepend new info to LRU */
+ priv->info_cache_lru = g_list_prepend (priv->info_cache_lru,
+ g_object_ref (icon_info));
+}
+
+static void
+ensure_in_lru_cache (GtkIconTheme *icon_theme,
+ GtkIconInfo *icon_info)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ GList *l;
+
+ l = g_list_find (priv->info_cache_lru, icon_info);
+ if (l)
+ {
+ /* Move to front of LRU if already in it */
+ priv->info_cache_lru = g_list_remove_link (priv->info_cache_lru, l);
+ priv->info_cache_lru = g_list_concat (l, priv->info_cache_lru);
+ }
+ else
+ add_to_lru_cache (icon_theme, icon_info);
+}
+
+static void
+remove_from_lru_cache (GtkIconTheme *icon_theme,
+ GtkIconInfo *icon_info)
+{
+ GtkIconThemePrivate *priv = icon_theme->priv;
+ if (g_list_find (priv->info_cache_lru, icon_info))
+ {
+ DEBUG_CACHE (("removing %p (%s %d 0x%x) from LRU cache (cache size %d)\n",
+ icon_info,
+ g_strjoinv (",", icon_info->key.icon_names),
+ icon_info->key.size, icon_info->key.flags,
+ g_list_length (priv->info_cache_lru)));
+
+ priv->info_cache_lru = g_list_remove (priv->info_cache_lru, icon_info);
+ g_object_unref (icon_info);
+ }
+}
+
+static SymbolicPixbufCache *
+symbolic_pixbuf_cache_new (GdkPixbuf *pixbuf,
+ const GdkRGBA *fg,
+ const GdkRGBA *success_color,
+ const GdkRGBA *warning_color,
+ const GdkRGBA *error_color,
+ SymbolicPixbufCache *next)
+{
+ SymbolicPixbufCache *cache;
+
+ cache = g_new0 (SymbolicPixbufCache, 1);
+ cache->pixbuf = g_object_ref (pixbuf);
+ if (fg)
+ cache->fg = *fg;
+ if (success_color)
+ cache->success_color = *success_color;
+ if (warning_color)
+ cache->warning_color = *warning_color;
+ if (error_color)
+ cache->error_color = *error_color;
+ cache->next = next;
+ return cache;
+}
+
+static gboolean
+rgba_matches (const GdkRGBA *a,
+ const GdkRGBA *b)
+{
+ GdkRGBA transparent = { 0 };
+
+ /* For matching we treat unset colors as transparent rather
+ than default, which works as well, because transparent
+ will never be used for real symbolic icon colors */
+ if (a == NULL)
+ a = &transparent;
+
+ return
+ fabs(a->red - b->red) < 0.0001 &&
+ fabs(a->green - b->green) < 0.0001 &&
+ fabs(a->blue - b->blue) < 0.0001 &&
+ fabs(a->alpha - b->alpha) < 0.0001;
+}
+
+static SymbolicPixbufCache *
+symbolic_pixbuf_cache_matches (SymbolicPixbufCache *cache,
+ const GdkRGBA *fg,
+ const GdkRGBA *success_color,
+ const GdkRGBA *warning_color,
+ const GdkRGBA *error_color)
+{
+ while (cache != NULL)
+ {
+ if (rgba_matches (fg, &cache->fg) &&
+ rgba_matches (success_color, &cache->success_color) &&
+ rgba_matches (warning_color, &cache->warning_color) &&
+ rgba_matches (error_color, &cache->error_color))
+ return cache;
+
+ cache = cache->next;
+ }
+
+ return NULL;
+}
+
+static void
+symbolic_pixbuf_cache_free (SymbolicPixbufCache *cache)
+{
+ SymbolicPixbufCache *next;
+
+ while (cache != NULL)
+ {
+ next = cache->next;
+ g_object_unref (cache->pixbuf);
+ g_free (cache);
+
+ cache = next;
+ }
+}
+
+static gboolean
+icon_name_is_symbolic (const gchar *icon_name)
+{
+ return g_str_has_suffix (icon_name, "-symbolic")
+ || g_str_has_suffix (icon_name, "-symbolic-ltr")
+ || g_str_has_suffix (icon_name, "-symbolic-rtl");
+}
+
+static gboolean
+icon_uri_is_symbolic (const gchar *icon_name)
+{
+ return g_str_has_suffix (icon_name, "-symbolic.svg")
+ || g_str_has_suffix (icon_name, "-symbolic-ltr.svg")
+ || g_str_has_suffix (icon_name, "-symbolic-rtl.svg")
+ || g_str_has_suffix (icon_name, ".symbolic.png");
+}
+
+static GtkIconInfo *
+real_choose_icon (GtkIconTheme *icon_theme,
+ const gchar *icon_names[],
+ gint size,
+ gint scale,
+ GtkIconLookupFlags flags)
+{
+ GtkIconThemePrivate *priv;
+ GList *l;
+ GtkIconInfo *icon_info = NULL;
+ GtkIconInfo *unscaled_icon_info;
+ UnthemedIcon *unthemed_icon = NULL;
+ const gchar *icon_name = NULL;
+ gboolean allow_svg;
+ gboolean use_builtin;
+ IconTheme *theme = NULL;
+ gint i;
+ IconInfoKey key;
+
+ priv = icon_theme->priv;
+
+ ensure_valid_themes (icon_theme);
+
+ key.icon_names = (gchar **)icon_names;
+ key.size = size;
+ key.scale = scale;
+ key.flags = flags;
+
+ icon_info = g_hash_table_lookup (priv->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 (priv->info_cache)));
+
+ icon_info = g_object_ref (icon_info);
+ remove_from_lru_cache (icon_theme, 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 = priv->pixbuf_supports_svg;
+
+ use_builtin = flags & GTK_ICON_LOOKUP_USE_BUILTIN;
+
+ /* This is used in the icontheme unit test */
+ GTK_NOTE (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 = priv->themes; l; l = l->next)
+ {
+ theme = l->data;
+ for (i = 0; icon_names[i] && icon_name_is_symbolic (icon_names[i]); i++)
+ {
+ icon_name = icon_names[i];
+ icon_info = theme_lookup_icon (theme, icon_name, size, scale, allow_svg, use_builtin);
+ if (icon_info)
+ goto out;
+ }
+ }
+
+ for (l = priv->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, use_builtin);
+ if (icon_info)
+ goto out;
+ }
+ }
+
+ theme = NULL;
+
+ for (i = 0; icon_names[i]; i++)
+ {
+ unthemed_icon = g_hash_table_lookup (priv->unthemed_icons, icon_names[i]);
+ if (unthemed_icon)
+ break;
+ }
+#ifdef G_OS_WIN32
+ /* Still not found an icon, check if reference to a Win32 resource */
+ if (!unthemed_icon)
+ {
+ gchar **resources;
+ HICON hIcon = NULL;
+
+ resources = g_strsplit (icon_names[0], ",", 0);
+ if (resources[0])
+ {
+ wchar_t *wfile = g_utf8_to_utf16 (resources[0], -1, NULL, NULL, NULL);
+ ExtractIconExW (wfile, resources[1] ? atoi (resources[1]) : 0, &hIcon, NULL, 1);
+ g_free (wfile);
+ }
+
+ if (hIcon)
+ {
+ icon_info = icon_info_new (ICON_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;
+ }
+
+ if (unthemed_icon->is_resource)
+ {
+ gchar *uri;
+ uri = g_strconcat ("resource://", icon_info->filename, NULL);
+ icon_info->icon_file = g_file_new_for_uri (uri);
+ g_free (uri);
+ }
+ else
+ icon_info->icon_file = g_file_new_for_path (icon_info->filename);
+
+ 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, use_builtin);
+ 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 = icon_theme;
+ 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 (priv->info_cache)));
+ g_hash_table_insert (priv->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 < priv->search_path_len; i++)
+ {
+ default_theme_path = g_build_filename (priv->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 *icon_theme,
+ 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]))
+ 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]))
+ 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]))
+ 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 (icon_theme,
+ (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]))
+ 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]))
+ 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 (icon_theme,
+ (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 (icon_theme,
+ (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 (icon_theme,
+ icon_names,
+ size,
+ scale,
+ flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC));
+ }
+
+ return icon_info;
+}
+
+/**
+ * gtk_icon_theme_lookup_icon:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_name: the name of the icon to lookup
+ * @size: desired icon size
+ * @flags: flags modifying the behavior of the icon lookup
+ *
+ * Looks up a named icon and returns a #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_window_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.
+ *
+ * Since: 2.4
+ */
+GtkIconInfo *
+gtk_icon_theme_lookup_icon (GtkIconTheme *icon_theme,
+ const gchar *icon_name,
+ gint size,
+ GtkIconLookupFlags flags)
+{
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_name != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+
+ GTK_NOTE (ICONTHEME, g_message ("looking up icon %s", icon_name));
+
+ return gtk_icon_theme_lookup_icon_for_scale (icon_theme, icon_name,
+ size, 1, flags);
+}
+
+/**
+ * gtk_icon_theme_lookup_icon_for_scale:
+ * @icon_theme: 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.
+ *
+ * Since: 3.10
+ */
+GtkIconInfo *
+gtk_icon_theme_lookup_icon_for_scale (GtkIconTheme *icon_theme,
+ const gchar *icon_name,
+ gint size,
+ gint scale,
+ GtkIconLookupFlags flags)
+{
+ GtkIconInfo *info;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_name != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+ g_return_val_if_fail (scale >= 1, NULL);
+
+ GTK_NOTE (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;
+
+ is_symbolic = icon_name_is_symbolic (icon_name);
+ if (is_symbolic)
+ nonsymbolic_icon_name = g_strndup (icon_name, strlen (icon_name) - 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 (icon_theme, (const gchar **) names, size, scale, flags);
+
+ g_strfreev (names);
+ }
+ else
+ {
+ const gchar *names[2];
+
+ names[0] = icon_name;
+ names[1] = NULL;
+
+ info = choose_icon (icon_theme, names, size, scale, flags);
+ }
+
+ return info;
+}
+
+/**
+ * gtk_icon_theme_choose_icon:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_names: (array zero-terminated=1): %NULL-terminated array of
+ * icon names to lookup
+ * @size: desired icon size
+ * @flags: flags modifying the behavior of the icon lookup
+ *
+ * Looks up a named icon and returns a #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.
+ *
+ * Since: 2.12
+ */
+GtkIconInfo *
+gtk_icon_theme_choose_icon (GtkIconTheme *icon_theme,
+ const gchar *icon_names[],
+ gint size,
+ GtkIconLookupFlags flags)
+{
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_names != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+ g_warn_if_fail ((flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK) == 0);
+
+ return choose_icon (icon_theme, icon_names, size, 1, flags);
+}
+
+/**
+ * gtk_icon_theme_choose_icon_for_scale:
+ * @icon_theme: 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.
+ *
+ * Since: 3.10
+ */
+GtkIconInfo *
+gtk_icon_theme_choose_icon_for_scale (GtkIconTheme *icon_theme,
+ const gchar *icon_names[],
+ gint size,
+ gint scale,
+ GtkIconLookupFlags flags)
+{
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_names != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+ g_return_val_if_fail (scale >= 1, NULL);
+ g_warn_if_fail ((flags & GTK_ICON_LOOKUP_GENERIC_FALLBACK) == 0);
+
+ return choose_icon (icon_theme, 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:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_name: the name of the icon to lookup
+ * @size: the desired icon size. The resulting icon may not be
+ * exactly this size; see gtk_icon_info_load_icon().
+ * @flags: flags modifying the behavior of the icon lookup
+ * @error: (allow-none): Location to store error information on failure,
+ * or %NULL.
+ *
+ * Looks up an icon in an icon theme, scales it to the given size
+ * and renders it into a pixbuf. This is a convenience function;
+ * if more details about the icon are needed, use
+ * gtk_icon_theme_lookup_icon() followed by gtk_icon_info_load_icon().
+ *
+ * Note that you probably want to listen for icon theme changes and
+ * update the icon. This is usually done by connecting to the
+ * GtkWidget::style-set signal. If for some reason you do not want to
+ * update the icon when the icon theme changes, you should consider
+ * using gdk_pixbuf_copy() to make a private copy of the pixbuf
+ * returned by this function. Otherwise GTK+ may need to keep the old
+ * icon theme loaded, which would be a waste of memory.
+ *
+ * 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.
+ *
+ * Since: 2.4
+ */
+GdkPixbuf *
+gtk_icon_theme_load_icon (GtkIconTheme *icon_theme,
+ const gchar *icon_name,
+ gint size,
+ GtkIconLookupFlags flags,
+ GError **error)
+{
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_name != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ return gtk_icon_theme_load_icon_for_scale (icon_theme, icon_name,
+ size, 1, flags, error);
+}
+
+/**
+ * gtk_icon_theme_load_icon_for_scale:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_name: the name of the icon to lookup
+ * @size: the desired icon size. The resulting icon may not be
+ * exactly this size; see gtk_icon_info_load_icon().
+ * @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.
+ *
+ * Since: 3.10
+ */
+GdkPixbuf *
+gtk_icon_theme_load_icon_for_scale (GtkIconTheme *icon_theme,
+ const gchar *icon_name,
+ gint size,
+ gint scale,
+ GtkIconLookupFlags flags,
+ GError **error)
+{
+ GtkIconInfo *icon_info;
+ GdkPixbuf *pixbuf = NULL;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_name != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+ g_return_val_if_fail (scale >= 1, NULL);
+
+ icon_info = gtk_icon_theme_lookup_icon_for_scale (icon_theme, 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, icon_theme->priv->current_theme);
+ return NULL;
+ }
+
+ pixbuf = 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 pixbuf;
+}
+
+/**
+ * gtk_icon_theme_load_surface:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_name: the name of the icon to lookup
+ * @size: the desired icon size. The resulting icon may not be
+ * exactly this size; see gtk_icon_info_load_icon().
+ * @scale: desired scale
+ * @for_window: (allow-none): #GdkWindow to optimize drawing for, or %NULL
+ * @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 cairo surface. 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_surface().
+ *
+ * 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.
+ *
+ * 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 cairo_surface_destroy() to
+ * release your reference to the icon. %NULL if the icon isn’t
+ * found.
+ *
+ * Since: 3.10
+ */
+cairo_surface_t *
+gtk_icon_theme_load_surface (GtkIconTheme *icon_theme,
+ const gchar *icon_name,
+ gint size,
+ gint scale,
+ GdkWindow *for_window,
+ GtkIconLookupFlags flags,
+ GError **error)
+{
+ GtkIconInfo *icon_info;
+ cairo_surface_t *surface = NULL;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (icon_name != NULL, NULL);
+ g_return_val_if_fail ((flags & GTK_ICON_LOOKUP_NO_SVG) == 0 ||
+ (flags & GTK_ICON_LOOKUP_FORCE_SVG) == 0, NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+ g_return_val_if_fail (scale >= 1, NULL);
+
+ icon_info = gtk_icon_theme_lookup_icon_for_scale (icon_theme, 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, icon_theme->priv->current_theme);
+ return NULL;
+ }
+
+ surface = gtk_icon_info_load_surface (icon_info, for_window, error);
+ g_object_unref (icon_info);
+
+ return surface;
+}
+
+/**
+ * gtk_icon_theme_has_icon:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_name: the name of an icon
+ *
+ * Checks whether an icon theme includes an icon
+ * for a particular name.
+ *
+ * Returns: %TRUE if @icon_theme includes an
+ * icon for @icon_name.
+ *
+ * Since: 2.4
+ */
+gboolean
+gtk_icon_theme_has_icon (GtkIconTheme *icon_theme,
+ const gchar *icon_name)
+{
+ GtkIconThemePrivate *priv;
+ GList *l;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), FALSE);
+ g_return_val_if_fail (icon_name != NULL, FALSE);
+
+ priv = icon_theme->priv;
+
+ ensure_valid_themes (icon_theme);
+
+ for (l = priv->dir_mtimes; l; l = l->next)
+ {
+ IconThemeDirMtime *dir_mtime = l->data;
+ GtkIconCache *cache = dir_mtime->cache;
+
+ if (cache && _gtk_icon_cache_has_icon (cache, icon_name))
+ return TRUE;
+ }
+
+ for (l = priv->themes; l; l = l->next)
+ {
+ if (theme_has_icon (l->data, icon_name))
+ return TRUE;
+ }
+
+ if (icon_theme_builtin_icons &&
+ g_hash_table_lookup_extended (icon_theme_builtin_icons,
+ icon_name, NULL, NULL))
+ return TRUE;
+
+ return FALSE;
+}
+
+static void
+add_size (gpointer key,
+ gpointer value,
+ gpointer user_data)
+{
+ gint **res_p = user_data;
+
+ **res_p = GPOINTER_TO_INT (key);
+
+ (*res_p)++;
+}
+
+/**
+ * gtk_icon_theme_get_icon_sizes:
+ * @icon_theme: a #GtkIconTheme
+ * @icon_name: the name of an icon
+ *
+ * Returns an array of integers describing the sizes at which
+ * the icon is available without scaling. A size of -1 means
+ * that the icon is available in a scalable format. The array
+ * is zero-terminated.
+ *
+ * Returns: (array zero-terminated=1) (transfer full): An newly
+ * allocated array describing the sizes at which the icon is
+ * available. The array should be freed with g_free() when it is no
+ * longer needed.
+ *
+ * Since: 2.6
+ */
+gint *
+gtk_icon_theme_get_icon_sizes (GtkIconTheme *icon_theme,
+ const gchar *icon_name)
+{
+ GList *l, *d, *icons;
+ GHashTable *sizes;
+ gint *result, *r;
+ guint suffix;
+ GtkIconThemePrivate *priv;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+
+ priv = icon_theme->priv;
+
+ ensure_valid_themes (icon_theme);
+
+ sizes = g_hash_table_new (g_direct_hash, g_direct_equal);
+
+ for (l = priv->themes; l; l = l->next)
+ {
+ IconTheme *theme = l->data;
+ for (d = theme->dirs; d; d = d->next)
+ {
+ IconThemeDir *dir = d->data;
+
+ if (dir->type != ICON_THEME_DIR_SCALABLE && g_hash_table_lookup_extended (sizes, GINT_TO_POINTER (dir->size), NULL, NULL))
+ continue;
+
+ suffix = theme_dir_get_icon_suffix (dir, icon_name, NULL);
+ if (suffix != ICON_SUFFIX_NONE)
+ {
+ if (suffix == ICON_SUFFIX_SVG)
+ g_hash_table_insert (sizes, GINT_TO_POINTER (-1), NULL);
+ else
+ g_hash_table_insert (sizes, GINT_TO_POINTER (dir->size), NULL);
+ }
+ }
+ }
+
+ if (icon_theme_builtin_icons)
+ {
+ icons = g_hash_table_lookup (icon_theme_builtin_icons, icon_name);
+
+ while (icons)
+ {
+ BuiltinIcon *icon = icons->data;
+
+ g_hash_table_insert (sizes, GINT_TO_POINTER (icon->size), NULL);
+ icons = icons->next;
+ }
+ }
+
+ r = result = g_new0 (gint, g_hash_table_size (sizes) + 1);
+
+ g_hash_table_foreach (sizes, add_size, &r);
+ g_hash_table_destroy (sizes);
+
+ return result;
+}
+
+static void
+add_key_to_hash (gpointer key,
+ gpointer value,
+ gpointer user_data)
+{
+ GHashTable *hash = user_data;
+
+ g_hash_table_insert (hash, key, NULL);
+}
+
+static void
+add_key_to_list (gpointer key,
+ gpointer value,
+ gpointer user_data)
+{
+ GList **list = user_data;
+
+ *list = g_list_prepend (*list, g_strdup (key));
+}
+
+/**
+ * gtk_icon_theme_list_icons:
+ * @icon_theme: a #GtkIconTheme
+ * @context: (allow-none): a string identifying a particular type of
+ * icon, or %NULL to list all icons.
+ *
+ * Lists the icons in the current icon theme. Only a subset
+ * of the icons can be listed by providing a context string.
+ * The set of values for the context string is system dependent,
+ * but will typically include such values as “Applications” and
+ * “MimeTypes”. 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).
+ * Also see gtk_icon_theme_list_contexts().
+ *
+ * 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().
+ *
+ * Since: 2.4
+ */
+GList *
+gtk_icon_theme_list_icons (GtkIconTheme *icon_theme,
+ const gchar *context)
+{
+ GtkIconThemePrivate *priv;
+ GHashTable *icons;
+ GList *list, *l;
+ GQuark context_quark;
+
+ priv = icon_theme->priv;
+
+ ensure_valid_themes (icon_theme);
+
+ if (context)
+ {
+ context_quark = g_quark_try_string (context);
+
+ if (!context_quark)
+ return NULL;
+ }
+ else
+ context_quark = 0;
+
+ icons = g_hash_table_new (g_str_hash, g_str_equal);
+
+ l = priv->themes;
+ while (l != NULL)
+ {
+ theme_list_icons (l->data, icons, context_quark);
+ l = l->next;
+ }
+
+ if (context_quark == 0)
+ g_hash_table_foreach (priv->unthemed_icons,
+ add_key_to_hash,
+ icons);
+
+ list = NULL;
+
+ g_hash_table_foreach (icons,
+ add_key_to_list,
+ &list);
+
+ g_hash_table_destroy (icons);
+
+ return list;
+}
+
+/**
+ * gtk_icon_theme_list_contexts:
+ * @icon_theme: a #GtkIconTheme
+ *
+ * Gets the list of contexts available within the current
+ * hierarchy of icon themes.
+ * See gtk_icon_theme_list_icons() for details about contexts.
+ *
+ * Returns: (element-type utf8) (transfer full): a #GList list
+ * holding the names of all the contexts in the theme. You must first
+ * free each element in the list with g_free(), then free the list
+ * itself with g_list_free().
+ *
+ * Since: 2.12
+ */
+GList *
+gtk_icon_theme_list_contexts (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv;
+ GHashTable *contexts;
+ GList *list, *l;
+
+ priv = icon_theme->priv;
+
+ ensure_valid_themes (icon_theme);
+
+ contexts = g_hash_table_new (g_str_hash, g_str_equal);
+
+ l = priv->themes;
+ while (l != NULL)
+ {
+ theme_list_contexts (l->data, contexts);
+ l = l->next;
+ }
+
+ list = NULL;
+
+ g_hash_table_foreach (contexts,
+ add_key_to_list,
+ &list);
+
+ g_hash_table_destroy (contexts);
+
+ return list;
+}
+
+/**
+ * gtk_icon_theme_get_example_icon_name:
+ * @icon_theme: a #GtkIconTheme
+ *
+ * Gets the name of an icon that is representative of the
+ * current theme (for instance, to use when presenting
+ * a list of themes to the user.)
+ *
+ * Returns: (nullable): the name of an example icon or %NULL.
+ * Free with g_free().
+ *
+ * Since: 2.4
+ */
+gchar *
+gtk_icon_theme_get_example_icon_name (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv;
+ GList *l;
+ IconTheme *theme;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+
+ priv = icon_theme->priv;
+
+ ensure_valid_themes (icon_theme);
+
+ l = priv->themes;
+ while (l != NULL)
+ {
+ theme = l->data;
+ if (theme->example)
+ return g_strdup (theme->example);
+
+ l = l->next;
+ }
+
+ return NULL;
+}
+
+
+static gboolean
+rescan_themes (GtkIconTheme *icon_theme)
+{
+ GtkIconThemePrivate *priv;
+ IconThemeDirMtime *dir_mtime;
+ GList *d;
+ gint stat_res;
+ GStatBuf stat_buf;
+ GTimeVal tv;
+
+ priv = icon_theme->priv;
+
+ for (d = priv->dir_mtimes; d != NULL; d = d->next)
+ {
+ dir_mtime = d->data;
+
+ stat_res = g_stat (dir_mtime->dir, &stat_buf);
+
+ /* dir mtime didn't change */
+ if (stat_res == 0 && 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);
+ priv->last_stat_time = tv.tv_sec;
+
+ return FALSE;
+}
+
+/**
+ * gtk_icon_theme_rescan_if_needed:
+ * @icon_theme: a #GtkIconTheme
+ *
+ * Checks to see if the icon theme has changed; if it has, any
+ * currently cached information is discarded and will be reloaded
+ * next time @icon_theme is accessed.
+ *
+ * Returns: %TRUE if the icon theme has changed and needed
+ * to be reloaded.
+ *
+ * Since: 2.4
+ */
+gboolean
+gtk_icon_theme_rescan_if_needed (GtkIconTheme *icon_theme)
+{
+ gboolean retval;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), FALSE);
+
+ retval = rescan_themes (icon_theme);
+ if (retval)
+ do_theme_change (icon_theme);
+
+ return retval;
+}
+
+static void
+theme_destroy (IconTheme *theme)
+{
+ g_free (theme->display_name);
+ g_free (theme->comment);
+ g_free (theme->name);
+ g_free (theme->example);
+
+ g_list_free_full (theme->dirs, (GDestroyNotify) theme_dir_destroy);
+
+ g_free (theme);
+}
+
+static void
+theme_dir_destroy (IconThemeDir *dir)
+{
+ if (dir->cache)
+ _gtk_icon_cache_unref (dir->cache);
+ 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);
+ break;
+ 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;
+ break;
+ 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;
+ break;
+ case ICON_THEME_DIR_UNTHEMED:
+ g_assert_not_reached ();
+ break;
+ }
+ 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";
+ default:
+ g_assert_not_reached();
+ }
+ return NULL;
+}
+
+static IconSuffix
+suffix_from_name (const gchar *name)
+{
+ IconSuffix retval = ICON_SUFFIX_NONE;
+
+ if (name != NULL)
+ {
+ if (g_str_has_suffix (name, ".symbolic.png"))
+ retval = ICON_SUFFIX_SYMBOLIC_PNG;
+ else if (g_str_has_suffix (name, ".png"))
+ retval = ICON_SUFFIX_PNG;
+ else if (g_str_has_suffix (name, ".svg"))
+ retval = ICON_SUFFIX_SVG;
+ else if (g_str_has_suffix (name, ".xpm"))
+ retval = ICON_SUFFIX_XPM;
+ }
+
+ return retval;
+}
+
+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,
+ gboolean *has_icon_file)
+{
+ IconSuffix suffix, symbolic_suffix;
+
+ if (dir->cache)
+ {
+ suffix = (IconSuffix)_gtk_icon_cache_get_icon_flags (dir->cache,
+ icon_name,
+ dir->subdir_index);
+
+ if (icon_name_is_symbolic (icon_name))
+ {
+ /* 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;
+ }
+
+ if (has_icon_file)
+ *has_icon_file = suffix & HAS_ICON_FILE;
+
+ suffix = suffix & ~HAS_ICON_FILE;
+ }
+ else
+ suffix = GPOINTER_TO_UINT (g_hash_table_lookup (dir->icons, icon_name));
+
+ GTK_NOTE (ICONTHEME, g_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,
+ gboolean use_builtin)
+{
+ GList *dirs, *l;
+ IconThemeDir *dir, *min_dir;
+ gchar *file;
+ gint min_difference, difference;
+ BuiltinIcon *closest_builtin = NULL;
+ IconSuffix suffix;
+
+ min_difference = G_MAXINT;
+ min_dir = NULL;
+
+ /* Builtin icons are logically part of the default theme and
+ * are searched before other subdirectories of the default theme.
+ */
+ if (use_builtin && strcmp (theme->name, FALLBACK_ICON_THEME) == 0)
+ {
+ closest_builtin = find_builtin_icon (icon_name,
+ size, scale,
+ &min_difference);
+
+ if (min_difference == 0)
+ return icon_info_new_builtin (closest_builtin);
+ }
+
+ 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, NULL);
+ 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_difference = difference;
+ }
+ }
+
+ l = l->next;
+ }
+
+ if (min_dir)
+ {
+ GtkIconInfo *icon_info;
+ gboolean has_icon_file = FALSE;
+
+ 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 = theme_dir_get_icon_suffix (min_dir, icon_name, &has_icon_file);
+ suffix = best_suffix (suffix, allow_svg);
+ g_assert (suffix != ICON_SUFFIX_NONE);
+
+ if (min_dir->dir)
+ {
+ file = g_strconcat (icon_name, string_from_suffix (suffix), NULL);
+ icon_info->filename = g_build_filename (min_dir->dir, file, NULL);
+
+ if (min_dir->is_resource)
+ {
+ gchar *uri;
+ uri = g_strconcat ("resource://", icon_info->filename, NULL);
+ icon_info->icon_file = g_file_new_for_uri (uri);
+ g_free (uri);
+ }
+ else
+ icon_info->icon_file = g_file_new_for_path (icon_info->filename);
+
+ icon_info->is_svg = suffix == ICON_SUFFIX_SVG;
+ icon_info->is_resource = min_dir->is_resource;
+ g_free (file);
+ }
+ else
+ {
+ icon_info->filename = NULL;
+ icon_info->icon_file = 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;
+ }
+
+ if (closest_builtin)
+ return icon_info_new_builtin (closest_builtin);
+
+ return NULL;
+}
+
+static void
+theme_list_icons (IconTheme *theme,
+ GHashTable *icons,
+ GQuark context)
+{
+ GList *l = theme->dirs;
+ IconThemeDir *dir;
+
+ while (l != NULL)
+ {
+ dir = l->data;
+
+ if (context == dir->context ||
+ context == 0)
+ {
+ if (dir->cache)
+ _gtk_icon_cache_add_icons (dir->cache, dir->subdir, icons);
+ else
+ g_hash_table_foreach (dir->icons, add_key_to_hash, icons);
+ }
+ l = l->next;
+ }
+}
+
+static 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 void
+theme_list_contexts (IconTheme *theme,
+ GHashTable *contexts)
+{
+ GList *l = theme->dirs;
+ IconThemeDir *dir;
+ const gchar *context;
+
+ while (l != NULL)
+ {
+ dir = l->data;
+
+ /* The "Context" key can be unset */
+ if (dir->context != 0)
+ {
+ context = g_quark_to_string (dir->context);
+ g_hash_table_replace (contexts, (gpointer) context, NULL);
+ }
+
+ l = l->next;
+ }
+}
+
+static gboolean
+scan_directory (GtkIconThemePrivate *icon_theme,
+ IconThemeDir *dir,
+ gchar *full_dir)
+{
+ GDir *gdir;
+ const gchar *name;
+
+ GTK_NOTE (ICONTHEME, g_message ("scanning directory %s", full_dir));
+
+ gdir = g_dir_open (full_dir, 0, NULL);
+
+ if (gdir == NULL)
+ return FALSE;
+
+ dir->icons = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, 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;
+
+ base_name = strip_suffix (name);
+
+ 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_dir_close (gdir);
+
+ return g_hash_table_size (dir->icons) > 0;
+}
+
+static gboolean
+scan_resources (GtkIconThemePrivate *icon_theme,
+ IconThemeDir *dir,
+ gchar *full_dir)
+{
+ gint i;
+ gchar **children;
+
+ GTK_NOTE (ICONTHEME, g_message ("scanning resources %s", full_dir));
+
+ children = g_resources_enumerate_children (full_dir, 0, NULL);
+ if (!children)
+ return FALSE;
+
+ dir->icons = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+
+ 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);
+
+ return g_hash_table_size (dir->icons) > 0;
+}
+
+static void
+theme_subdir_load (GtkIconTheme *icon_theme,
+ 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;
+ gboolean has_icons;
+
+ 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 = icon_theme->priv->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))
+ {
+ if (dir_mtime->cache == NULL)
+ {
+ /* This will return NULL if the cache doesn't exist or is outdated */
+ dir_mtime->cache = _gtk_icon_cache_new_for_path (dir_mtime->dir);
+ }
+
+ dir = g_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;
+
+ if (dir_mtime->cache != NULL)
+ {
+ dir->cache = _gtk_icon_cache_ref (dir_mtime->cache);
+ dir->subdir_index = _gtk_icon_cache_get_directory_index (dir->cache, dir->subdir);
+ has_icons = _gtk_icon_cache_has_icons (dir->cache, dir->subdir);
+ }
+ else
+ {
+ dir->cache = NULL;
+ dir->subdir_index = -1;
+ has_icons = scan_directory (icon_theme->priv, dir, full_dir);
+ }
+
+ if (has_icons)
+ theme->dirs = g_list_prepend (theme->dirs, dir);
+ else
+ theme_dir_destroy (dir);
+ }
+ else
+ g_free (full_dir);
+ }
+
+ if (strcmp (theme->name, FALLBACK_ICON_THEME) == 0)
+ {
+ for (d = icon_theme->priv->resource_paths; d; d = d->next)
+ {
+ /* 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';
+ dir = g_new0 (IconThemeDir, 1);
+ 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;
+
+ if (scan_resources (icon_theme->priv, dir, full_dir))
+ theme->dirs = g_list_prepend (theme->dirs, dir);
+ else
+ theme_dir_destroy (dir);
+ }
+ }
+}
+
+/*
+ * GtkIconInfo
+ */
+
+static void gtk_icon_info_class_init (GtkIconInfoClass *klass);
+
+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;
+ GSList *l;
+
+ 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->icon_file)
+ dup->icon_file = g_object_ref (icon_info->icon_file);
+ if (icon_info->loadable)
+ dup->loadable = g_object_ref (icon_info->loadable);
+ if (icon_info->pixbuf)
+ dup->pixbuf = g_object_ref (icon_info->pixbuf);
+
+ for (l = icon_info->emblem_infos; l != NULL; l = l->next)
+ {
+ dup->emblem_infos =
+ g_slist_append (dup->emblem_infos,
+ icon_info_dup (l->data));
+ }
+
+ 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->emblems_applied = icon_info->emblems_applied;
+ 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 GtkIconInfo *
+icon_info_new_builtin (BuiltinIcon *icon)
+{
+ GtkIconInfo *icon_info = icon_info_new (ICON_THEME_DIR_THRESHOLD, icon->size, 1);
+
+ icon_info->cache_pixbuf = g_object_ref (icon->pixbuf);
+
+ return icon_info;
+}
+
+/**
+ * gtk_icon_info_copy: (skip)
+ * @icon_info: a #GtkIconInfo
+ *
+ * Make a copy of a #GtkIconInfo.
+ *
+ * Returns: (transfer full): the new GtkIconInfo
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.8: Use g_object_ref()
+ */
+GtkIconInfo *
+gtk_icon_info_copy (GtkIconInfo *icon_info)
+{
+ g_return_val_if_fail (icon_info != NULL, NULL);
+ return g_object_ref (icon_info);
+}
+
+/**
+ * gtk_icon_info_free: (skip)
+ * @icon_info: a #GtkIconInfo
+ *
+ * Free a #GtkIconInfo and associated information
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.8: Use g_object_unref()
+ */
+void
+gtk_icon_info_free (GtkIconInfo *icon_info)
+{
+ g_return_if_fail (icon_info != NULL);
+ g_object_unref (icon_info);
+}
+
+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->priv->info_cache, &icon_info->key);
+
+ g_strfreev (icon_info->key.icon_names);
+
+ g_free (icon_info->filename);
+ g_clear_object (&icon_info->icon_file);
+
+ g_clear_object (&icon_info->loadable);
+ g_slist_free_full (icon_info->emblem_infos, (GDestroyNotify) g_object_unref);
+ g_clear_object (&icon_info->pixbuf);
+ g_clear_object (&icon_info->proxy_pixbuf);
+ g_clear_object (&icon_info->cache_pixbuf);
+ g_clear_error (&icon_info->load_error);
+
+ symbolic_pixbuf_cache_free (icon_info->symbolic_pixbuf_cache);
+
+ 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:
+ * @icon_info: a #GtkIconInfo
+ *
+ * Gets the base size for the icon. The base size
+ * is a size for the icon that was specified by
+ * the icon theme creator. This may be different
+ * than the actual size of image; an example of
+ * this is small emblem icons that can be attached
+ * to a larger icon. These icons will be given
+ * the same base size as the larger icons to which
+ * they are attached.
+ *
+ * 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.
+ *
+ * Since: 2.4
+ */
+gint
+gtk_icon_info_get_base_size (GtkIconInfo *icon_info)
+{
+ g_return_val_if_fail (icon_info != NULL, 0);
+
+ return icon_info->dir_size;
+}
+
+/**
+ * gtk_icon_info_get_base_scale:
+ * @icon_info: 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 screen 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
+ *
+ * Since: 3.10
+ */
+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:
+ * @icon_info: a #GtkIconInfo
+ *
+ * Gets the filename for the icon. If the %GTK_ICON_LOOKUP_USE_BUILTIN
+ * flag was passed to gtk_icon_theme_lookup_icon(), there may be no
+ * filename if a builtin icon is returned; in this case, you should
+ * use gtk_icon_info_get_builtin_pixbuf().
+ *
+ * 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.
+ *
+ * Since: 2.4
+ */
+const gchar *
+gtk_icon_info_get_filename (GtkIconInfo *icon_info)
+{
+ g_return_val_if_fail (icon_info != NULL, NULL);
+
+ return icon_info->filename;
+}
+
+/**
+ * gtk_icon_info_get_builtin_pixbuf:
+ * @icon_info: a #GtkIconInfo
+ *
+ * Gets the built-in image for this icon, if any. To allow GTK+ to use
+ * built in icon images, you must pass the %GTK_ICON_LOOKUP_USE_BUILTIN
+ * to gtk_icon_theme_lookup_icon().
+ *
+ * Returns: (nullable) (transfer none): the built-in image pixbuf, or %NULL.
+ * No extra reference is added to the returned pixbuf, so if
+ * you want to keep it around, you must use g_object_ref().
+ * The returned image must not be modified.
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.14: This function is deprecated, use
+ * gtk_icon_theme_add_resource_path() instead of builtin icons.
+ */
+GdkPixbuf *
+gtk_icon_info_get_builtin_pixbuf (GtkIconInfo *icon_info)
+{
+ g_return_val_if_fail (icon_info != NULL, NULL);
+
+ if (icon_info->filename)
+ return NULL;
+
+ return icon_info->cache_pixbuf;
+}
+
+/**
+ * gtk_icon_info_is_symbolic:
+ * @icon_info: 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
+ *
+ * Since: 3.12
+ */
+gboolean
+gtk_icon_info_is_symbolic (GtkIconInfo *icon_info)
+{
+ gchar *icon_uri;
+ gboolean is_symbolic;
+
+ g_return_val_if_fail (GTK_IS_ICON_INFO (icon_info), FALSE);
+
+ icon_uri = NULL;
+ if (icon_info->icon_file)
+ icon_uri = g_file_get_uri (icon_info->icon_file);
+
+ is_symbolic = (icon_uri != NULL) && (icon_uri_is_symbolic (icon_uri));
+ g_free (icon_uri);
+
+ return is_symbolic;
+}
+
+static GdkPixbuf *
+apply_emblems_to_pixbuf (GdkPixbuf *pixbuf,
+ GtkIconInfo *info)
+{
+ GdkPixbuf *icon = NULL;
+ gint w, h, pos;
+ GSList *l;
+
+ if (info->emblem_infos == NULL)
+ return NULL;
+
+ w = gdk_pixbuf_get_width (pixbuf);
+ h = gdk_pixbuf_get_height (pixbuf);
+
+ for (l = info->emblem_infos, pos = 0; l; l = l->next, pos++)
+ {
+ GtkIconInfo *emblem_info = l->data;
+
+ if (icon_info_ensure_scale_and_pixbuf (emblem_info))
+ {
+ GdkPixbuf *emblem = emblem_info->pixbuf;
+ gint ew, eh;
+ gint x = 0, y = 0; /* silence compiler */
+ gdouble scale;
+
+ ew = gdk_pixbuf_get_width (emblem);
+ eh = gdk_pixbuf_get_height (emblem);
+ if (ew >= w)
+ {
+ scale = 0.75;
+ ew = ew * 0.75;
+ eh = eh * 0.75;
+ }
+ else
+ scale = 1.0;
+
+ switch (pos % 4)
+ {
+ case 0:
+ x = w - ew;
+ y = h - eh;
+ break;
+ case 1:
+ x = w - ew;
+ y = 0;
+ break;
+ case 2:
+ x = 0;
+ y = h - eh;
+ break;
+ case 3:
+ x = 0;
+ y = 0;
+ break;
+ }
+
+ if (icon == NULL)
+ {
+ icon = gdk_pixbuf_copy (pixbuf);
+ if (icon == NULL)
+ break;
+ }
+
+ gdk_pixbuf_composite (emblem, icon, x, y, ew, eh, x, y,
+ scale, scale, GDK_INTERP_BILINEAR, 255);
+ }
+ }
+
+ return icon;
+}
+
+/* Combine the icon with all emblems, the first emblem is placed
+ * in the southeast corner. Scale emblems to be at most 3/4 of the
+ * size of the icon itself.
+ */
+static void
+apply_emblems (GtkIconInfo *info)
+{
+ GdkPixbuf *icon;
+
+ if (info->emblems_applied)
+ return;
+
+ icon = apply_emblems_to_pixbuf (info->pixbuf, info);
+
+ if (icon)
+ {
+ g_object_unref (info->pixbuf);
+ info->pixbuf = icon;
+ info->emblems_applied = TRUE;
+ }
+}
+
+/* If this returns TRUE, its safe to call icon_info_ensure_scale_and_pixbuf
+ * without blocking
+ */
+static gboolean
+icon_info_get_pixbuf_ready (GtkIconInfo *icon_info)
+{
+ if (icon_info->pixbuf &&
+ (icon_info->emblem_infos == NULL || icon_info->emblems_applied))
+ return TRUE;
+
+ if (icon_info->load_error)
+ return TRUE;
+
+ return FALSE;
+}
+
+/* This function contains the complicated logic for deciding
+ * on the size at which to load the icon and loading it at
+ * that size.
+ */
+static gboolean
+icon_info_ensure_scale_and_pixbuf (GtkIconInfo *icon_info)
+{
+ gint image_width, image_height, image_size;
+ gint scaled_desired_size;
+ GdkPixbuf *source_pixbuf;
+ gdouble dir_scale;
+
+ if (icon_info->pixbuf)
+ {
+ apply_emblems (icon_info);
+ return TRUE;
+ }
+
+ if (icon_info->load_error)
+ return FALSE;
+
+ if (icon_info->icon_file && !icon_info->loadable)
+ icon_info->loadable = G_LOADABLE_ICON (g_file_icon_new (icon_info->icon_file));
+
+ scaled_desired_size = icon_info->desired_size * icon_info->desired_scale;
+
+ dir_scale = icon_info->dir_scale;
+
+ /* In many cases, the scale can be determined without actual access
+ * to the icon file. This is generally true when we have a size
+ * for the directory where the icon is; the image size doesn't
+ * matter in that case.
+ */
+ if (icon_info->forced_size ||
+ icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
+ icon_info->scale = -1;
+ else if (icon_info->dir_type == ICON_THEME_DIR_FIXED ||
+ icon_info->dir_type == ICON_THEME_DIR_THRESHOLD)
+ icon_info->scale = icon_info->unscaled_scale;
+ else if (icon_info->dir_type == ICON_THEME_DIR_SCALABLE)
+ {
+ /* For svg icons, treat scalable directories as if they had
+ * a Scale=<desired_scale> entry. In particular, this means
+ * spinners that are restriced to size 32 will loaded at size
+ * up to 64 with Scale=2.
+ */
+ if (icon_info->is_svg)
+ dir_scale = icon_info->desired_scale;
+
+ if (scaled_desired_size < icon_info->min_size * dir_scale)
+ icon_info->scale = (gdouble) icon_info->min_size / (gdouble) icon_info->dir_size;
+ else if (scaled_desired_size > icon_info->max_size * dir_scale)
+ icon_info->scale = (gdouble) icon_info->max_size / (gdouble) icon_info->dir_size;
+ else
+ icon_info->scale = (gdouble) scaled_desired_size / (icon_info->dir_size * dir_scale);
+ }
+
+ /* At this point, we need to actually get the icon; either from the
+ * builtin image or by loading the file
+ */
+ source_pixbuf = NULL;
+ if (icon_info->cache_pixbuf)
+ source_pixbuf = g_object_ref (icon_info->cache_pixbuf);
+ else if (icon_info->is_resource)
+ {
+ if (icon_info->is_svg)
+ {
+ gint size;
+
+ if (icon_info->forced_size || icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
+ size = scaled_desired_size;
+ else
+ size = icon_info->dir_size * dir_scale * icon_info->scale;
+
+ if (size == 0)
+ source_pixbuf = _gdk_pixbuf_new_from_resource_scaled (icon_info->filename,
+ icon_info->desired_scale,
+ &icon_info->load_error);
+ else
+ source_pixbuf = gdk_pixbuf_new_from_resource_at_scale (icon_info->filename,
+ size, size, TRUE,
+ &icon_info->load_error);
+ }
+ else
+ source_pixbuf = gdk_pixbuf_new_from_resource (icon_info->filename,
+ &icon_info->load_error);
+ }
+ else
+ {
+ GInputStream *stream;
+
+ /* TODO: We should have a load_at_scale */
+ stream = g_loadable_icon_load (icon_info->loadable,
+ scaled_desired_size,
+ NULL, NULL,
+ &icon_info->load_error);
+ 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 (size == 0)
+ source_pixbuf = _gdk_pixbuf_new_from_stream_scaled (stream,
+ icon_info->desired_scale,
+ NULL,
+ &icon_info->load_error);
+ else
+ source_pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream,
+ size, size,
+ TRUE, NULL,
+ &icon_info->load_error);
+ }
+ else
+ source_pixbuf = gdk_pixbuf_new_from_stream (stream,
+ NULL,
+ &icon_info->load_error);
+ g_object_unref (stream);
+ }
+ }
+
+ if (!source_pixbuf)
+ {
+ static gboolean warn_about_load_failure = TRUE;
+
+ if (warn_about_load_failure)
+ {
+ gchar *path;
+
+ if (icon_info->is_resource)
+ path = g_strdup (icon_info->filename);
+ else if (G_IS_FILE (icon_info->loadable))
+ path = g_file_get_path (G_FILE (icon_info->loadable));
+ else
+ path = g_strdup ("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);
+ g_free (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->pixbuf = source_pixbuf;
+ else if (icon_info->scale == 1.0)
+ icon_info->pixbuf = source_pixbuf;
+ else
+ {
+ icon_info->pixbuf = 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);
+ g_object_unref (source_pixbuf);
+ }
+
+ apply_emblems (icon_info);
+
+ return TRUE;
+}
+
+static void
+proxy_pixbuf_destroy (guchar *pixels, gpointer data)
+{
+ GtkIconInfo *icon_info = data;
+ GtkIconTheme *icon_theme = icon_info->in_cache;
+
+ g_assert (icon_info->proxy_pixbuf != NULL);
+ icon_info->proxy_pixbuf = NULL;
+
+ /* Keep it alive a bit longer */
+ if (icon_theme != NULL)
+ ensure_in_lru_cache (icon_theme, icon_info);
+
+ g_object_unref (icon_info);
+}
+
+/**
+ * gtk_icon_info_load_icon:
+ * @icon_info: 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): the rendered icon; this may be a newly
+ * created icon or a new reference to an internal icon, so you must
+ * not modify the icon. Use g_object_unref() to release your reference
+ * to the icon.
+ *
+ * Since: 2.4
+ */
+GdkPixbuf *
+gtk_icon_info_load_icon (GtkIconInfo *icon_info,
+ GError **error)
+{
+ g_return_val_if_fail (icon_info != NULL, NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ if (!icon_info_ensure_scale_and_pixbuf (icon_info))
+ {
+ 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;
+ }
+
+ /* Instead of returning the pixbuf directly we return a proxy
+ * to it that we don't own (but that shares the data with the
+ * one we own). This way we can know when it is freed and ensure
+ * the IconInfo is alive (and thus cached) while the pixbuf is
+ * still alive.
+ */
+ if (icon_info->proxy_pixbuf != NULL)
+ return g_object_ref (icon_info->proxy_pixbuf);
+
+ icon_info->proxy_pixbuf =
+ gdk_pixbuf_new_from_data (gdk_pixbuf_get_pixels (icon_info->pixbuf),
+ gdk_pixbuf_get_colorspace (icon_info->pixbuf),
+ gdk_pixbuf_get_has_alpha (icon_info->pixbuf),
+ gdk_pixbuf_get_bits_per_sample (icon_info->pixbuf),
+ gdk_pixbuf_get_width (icon_info->pixbuf),
+ gdk_pixbuf_get_height (icon_info->pixbuf),
+ gdk_pixbuf_get_rowstride (icon_info->pixbuf),
+ proxy_pixbuf_destroy,
+ g_object_ref (icon_info));
+
+ return icon_info->proxy_pixbuf;
+}
+
+/**
+ * gtk_icon_info_load_surface:
+ * @icon_info: a #GtkIconInfo from gtk_icon_theme_lookup_icon()
+ * @for_window: (allow-none): #GdkWindow to optimize drawing for, or %NULL
+ * @error: (allow-none): location for 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
+ * surface 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): 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 cairo_surface_destroy() to release your
+ * reference to the icon.
+ *
+ * Since: 3.10
+ */
+cairo_surface_t *
+gtk_icon_info_load_surface (GtkIconInfo *icon_info,
+ GdkWindow *for_window,
+ GError **error)
+{
+ GdkPixbuf *pixbuf;
+ cairo_surface_t *surface;
+
+ g_return_val_if_fail (icon_info != NULL, NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ pixbuf = gtk_icon_info_load_icon (icon_info, error);
+
+ if (pixbuf == NULL)
+ return NULL;
+
+ surface = gdk_cairo_surface_create_from_pixbuf (pixbuf, icon_info->desired_scale, for_window);
+ g_object_unref (pixbuf);
+
+ return surface;
+}
+
+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_pixbuf (dup);
+ g_task_return_pointer (task, NULL, NULL);
+}
+
+/**
+ * gtk_icon_info_load_icon_async:
+ * @icon_info: 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.
+ *
+ * Since: 3.8
+ */
+void
+gtk_icon_info_load_icon_async (GtkIconInfo *icon_info,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GTask *task;
+ GdkPixbuf *pixbuf;
+ GtkIconInfo *dup;
+ GError *error = NULL;
+
+ task = g_task_new (icon_info, cancellable, callback, user_data);
+
+ if (icon_info_get_pixbuf_ready (icon_info))
+ {
+ pixbuf = gtk_icon_info_load_icon (icon_info, &error);
+ if (pixbuf == NULL)
+ g_task_return_error (task, error);
+ else
+ g_task_return_pointer (task, pixbuf, g_object_unref);
+ g_object_unref (task);
+ }
+ else
+ {
+ 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:
+ * @icon_info: 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.
+ *
+ * Since: 3.8
+ */
+GdkPixbuf *
+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->emblems_applied = dup->emblems_applied;
+ icon_info->scale = dup->scale;
+ g_clear_object (&icon_info->pixbuf);
+ if (dup->pixbuf)
+ icon_info->pixbuf = g_object_ref (dup->pixbuf);
+ 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 void
+proxy_symbolic_pixbuf_destroy (guchar *pixels,
+ gpointer data)
+{
+ GtkIconInfo *icon_info = data;
+ GtkIconTheme *icon_theme = icon_info->in_cache;
+ SymbolicPixbufCache *symbolic_cache;
+
+ for (symbolic_cache = icon_info->symbolic_pixbuf_cache;
+ symbolic_cache != NULL;
+ symbolic_cache = symbolic_cache->next)
+ {
+ if (symbolic_cache->proxy_pixbuf != NULL &&
+ gdk_pixbuf_get_pixels (symbolic_cache->proxy_pixbuf) == pixels)
+ break;
+ }
+
+ g_assert (symbolic_cache != NULL);
+ g_assert (symbolic_cache->proxy_pixbuf != NULL);
+
+ symbolic_cache->proxy_pixbuf = NULL;
+
+ /* Keep it alive a bit longer */
+ if (icon_theme != NULL)
+ ensure_in_lru_cache (icon_theme, icon_info);
+
+ g_object_unref (icon_info);
+}
+
+static GdkPixbuf *
+symbolic_cache_get_proxy (SymbolicPixbufCache *symbolic_cache,
+ GtkIconInfo *icon_info)
+{
+ if (symbolic_cache->proxy_pixbuf)
+ return g_object_ref (symbolic_cache->proxy_pixbuf);
+
+ symbolic_cache->proxy_pixbuf =
+ gdk_pixbuf_new_from_data (gdk_pixbuf_get_pixels (symbolic_cache->pixbuf),
+ gdk_pixbuf_get_colorspace (symbolic_cache->pixbuf),
+ gdk_pixbuf_get_has_alpha (symbolic_cache->pixbuf),
+ gdk_pixbuf_get_bits_per_sample (symbolic_cache->pixbuf),
+ gdk_pixbuf_get_width (symbolic_cache->pixbuf),
+ gdk_pixbuf_get_height (symbolic_cache->pixbuf),
+ gdk_pixbuf_get_rowstride (symbolic_cache->pixbuf),
+ proxy_symbolic_pixbuf_destroy,
+ g_object_ref (icon_info));
+
+ return symbolic_cache->proxy_pixbuf;
+}
+
+static gchar *
+rgba_to_string_noalpha (const GdkRGBA *rgba)
+{
+ GdkRGBA color;
+
+ color = *rgba;
+ color.alpha = 1.0;
+
+ return gdk_rgba_to_string (&color);
+}
+
+static void
+rgba_to_pixel(const GdkRGBA *rgba,
+ guint8 pixel[4])
+{
+ pixel[0] = rgba->red * 255;
+ pixel[1] = rgba->green * 255;
+ pixel[2] = rgba->blue * 255;
+ pixel[3] = 255;
+}
+
+GdkPixbuf *
+gtk_icon_theme_color_symbolic_pixbuf (GdkPixbuf *symbolic,
+ const GdkRGBA *fg_color,
+ const GdkRGBA *success_color,
+ const GdkRGBA *warning_color,
+ const GdkRGBA *error_color)
+{
+ int width, height, x, y, src_stride, dst_stride;
+ guchar *src_data, *dst_data;
+ guchar *src_row, *dst_row;
+ int alpha;
+ GdkPixbuf *colored;
+ guint8 fg_pixel[4], success_pixel[4], warning_pixel[4], error_pixel[4];
+
+ alpha = fg_color->alpha * 255;
+
+ rgba_to_pixel (fg_color, fg_pixel);
+ rgba_to_pixel (success_color, success_pixel);
+ rgba_to_pixel (warning_color, warning_pixel);
+ rgba_to_pixel (error_color, error_pixel);
+
+ width = gdk_pixbuf_get_width (symbolic);
+ height = gdk_pixbuf_get_height (symbolic);
+
+ colored = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
+
+ src_stride = gdk_pixbuf_get_rowstride (symbolic);
+ src_data = gdk_pixbuf_get_pixels (symbolic);
+
+ dst_data = gdk_pixbuf_get_pixels (colored);
+ dst_stride = gdk_pixbuf_get_rowstride (colored);
+
+ for (y = 0; y < height; y++)
+ {
+ src_row = src_data + src_stride * y;
+ dst_row = dst_data + dst_stride * y;
+ for (x = 0; x < width; x++)
+ {
+ guint r, g, b, a;
+ int c1, c2, c3, c4;
+
+ a = src_row[3];
+ dst_row[3] = a * alpha / 255;
+
+ if (a == 0)
+ {
+ dst_row[0] = 0;
+ dst_row[1] = 0;
+ dst_row[2] = 0;
+ }
+ else
+ {
+ c2 = src_row[0];
+ c3 = src_row[1];
+ c4 = src_row[2];
+
+ if (c2 == 0 && c3 == 0 && c4 == 0)
+ {
+ dst_row[0] = fg_pixel[0];
+ dst_row[1] = fg_pixel[1];
+ dst_row[2] = fg_pixel[2];
+ }
+ else
+ {
+ c1 = 255 - c2 - c3 - c4;
+
+ r = fg_pixel[0] * c1 + success_pixel[0] * c2 + warning_pixel[0] * c3 + error_pixel[0] * c4;
+ g = fg_pixel[1] * c1 + success_pixel[1] * c2 + warning_pixel[1] * c3 + error_pixel[1] * c4;
+ b = fg_pixel[2] * c1 + success_pixel[2] * c2 + warning_pixel[2] * c3 + error_pixel[2] * c4;
+
+ dst_row[0] = r / 255;
+ dst_row[1] = g / 255;
+ dst_row[2] = b / 255;
+ }
+ }
+
+ src_row += 4;
+ dst_row += 4;
+ }
+ }
+
+ return colored;
+}
+
+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 };
+
+ if (!icon_info_ensure_scale_and_pixbuf (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;
+ }
+
+ return gtk_icon_theme_color_symbolic_pixbuf (icon_info->pixbuf,
+ fg ? fg : &fg_default,
+ success_color ? success_color : &success_default,
+ warning_color ? warning_color : &warning_default,
+ error_color ? error_color : &error_default);
+}
+
+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;
+ gchar *css_fg;
+ gchar *css_success;
+ gchar *css_warning;
+ gchar *css_error;
+ gchar *data;
+ gchar *width;
+ gchar *height;
+ gchar *file_data, *escaped_file_data;
+ gsize file_len;
+ gint symbolic_size;
+ double alpha;
+ gchar alphastr[G_ASCII_DTOSTR_BUF_SIZE];
+
+ alpha = fg->alpha;
+
+ css_fg = rgba_to_string_noalpha (fg);
+
+ css_success = css_warning = css_error = NULL;
+
+ if (warning_color)
+ css_warning = rgba_to_string_noalpha (warning_color);
+ else
+ css_warning = g_strdup ("rgb(245,121,62)");
+
+ if (error_color)
+ css_error = rgba_to_string_noalpha (error_color);
+ else
+ css_error = g_strdup ("rgb(204,0,0)");
+
+ if (success_color)
+ css_success = rgba_to_string_noalpha (success_color);
+ else
+ css_success = g_strdup ("rgb(78,154,6)");
+
+ if (!g_file_load_contents (icon_info->icon_file, NULL, &file_data, &file_len, NULL, error))
+ return NULL;
+
+ if (!icon_info_ensure_scale_and_pixbuf (icon_info))
+ {
+ g_propagate_error (error, icon_info->load_error);
+ icon_info->load_error = NULL;
+ g_free (css_fg);
+ g_free (css_warning);
+ g_free (css_error);
+ g_free (css_success);
+ g_free (file_data);
+ return NULL;
+ }
+
+ if (icon_info->symbolic_width == 0 ||
+ icon_info->symbolic_height == 0)
+ {
+ /* Fetch size from the original icon */
+ stream = g_memory_input_stream_new_from_data (file_data, file_len, NULL);
+ pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, error);
+ g_object_unref (stream);
+
+ if (!pixbuf)
+ {
+ g_free (css_fg);
+ g_free (css_warning);
+ g_free (css_error);
+ g_free (css_success);
+ g_free (file_data);
+ return NULL;
+ }
+
+ icon_info->symbolic_width = gdk_pixbuf_get_width (pixbuf);
+ icon_info->symbolic_height = gdk_pixbuf_get_height (pixbuf);
+ g_object_unref (pixbuf);
+ }
+
+ symbolic_size = MAX (icon_info->symbolic_width, icon_info->symbolic_height);
+
+ GTK_NOTE (ICONTHEME,
+ if (icon_info->dir_type == ICON_THEME_DIR_UNTHEMED)
+ g_message ("Symbolic icon %s is not in an icon theme directory",
+ icon_info->key.icon_names ? icon_info->key.icon_names[0] : icon_info->filename);
+ else if (icon_info->dir_size * icon_info->dir_scale != symbolic_size)
+ g_message ("Symbolic icon %s of size %d is in an icon theme directory of size %d",
+ icon_info->key.icon_names ? icon_info->key.icon_names[0] : icon_info->filename,
+ symbolic_size,
+ icon_info->dir_size * icon_info->dir_scale)
+ );
+
+ width = g_strdup_printf ("%d", icon_info->symbolic_width);
+ height = g_strdup_printf ("%d", icon_info->symbolic_height);
+
+ escaped_file_data = g_base64_encode ((guchar *) file_data, file_len);
+ g_free (file_data);
+
+ g_ascii_dtostr (alphastr, G_ASCII_DTOSTR_BUF_SIZE, CLAMP (alpha, 0, 1));
+
+ 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 (css_fg);
+ g_free (css_warning);
+ g_free (css_error);
+ g_free (css_success);
+ g_free (width);
+ g_free (height);
+
+ stream = g_memory_input_stream_new_from_data (data, -1, g_free);
+ pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream,
+ gdk_pixbuf_get_width (icon_info->pixbuf),
+ gdk_pixbuf_get_height (icon_info->pixbuf),
+ 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,
+ gboolean use_cache,
+ GError **error)
+{
+ GdkPixbuf *pixbuf;
+ SymbolicPixbufCache *symbolic_cache;
+ char *icon_uri;
+
+ if (use_cache)
+ {
+ symbolic_cache = symbolic_pixbuf_cache_matches (icon_info->symbolic_pixbuf_cache,
+ fg, success_color, warning_color, error_color);
+ if (symbolic_cache)
+ return symbolic_cache_get_proxy (symbolic_cache, icon_info);
+ }
+
+ /* css_fg can't possibly have failed, otherwise
+ * that would mean we have a broken style
+ */
+ g_return_val_if_fail (fg != NULL, NULL);
+
+ icon_uri = g_file_get_uri (icon_info->icon_file);
+ if (g_str_has_suffix (icon_uri, ".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);
+
+ g_free (icon_uri);
+
+ if (pixbuf != NULL)
+ {
+ GdkPixbuf *icon;
+
+ icon = apply_emblems_to_pixbuf (pixbuf, icon_info);
+ if (icon != NULL)
+ {
+ g_object_unref (pixbuf);
+ pixbuf = icon;
+ }
+
+ if (use_cache)
+ {
+ icon_info->symbolic_pixbuf_cache =
+ symbolic_pixbuf_cache_new (pixbuf, fg, success_color, warning_color, error_color,
+ icon_info->symbolic_pixbuf_cache);
+ g_object_unref (pixbuf);
+ return symbolic_cache_get_proxy (icon_info->symbolic_pixbuf_cache, icon_info);
+ }
+ else
+ return pixbuf;
+ }
+
+ return NULL;
+}
+
+/**
+ * gtk_icon_info_load_symbolic:
+ * @icon_info: a #GtkIconInfo
+ * @fg: a #GdkRGBA representing the foreground color of the icon
+ * @success_color: (allow-none): a #GdkRGBA representing the warning color
+ * of the icon or %NULL to use the default color
+ * @warning_color: (allow-none): a #GdkRGBA representing the warning color
+ * of the icon or %NULL to use the default color
+ * @error_color: (allow-none): a #GdkRGBA representing the error color
+ * of the icon or %NULL to use the default color (allow-none)
+ * @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
+ * loaded icon was a symbolic one and whether the @fg color was
+ * applied to it.
+ * @error: (allow-none): location to store error information on failure,
+ * or %NULL.
+ *
+ * Loads an icon, modifying it to match the system colours for the foreground,
+ * success, warning and error colors provided. If the icon is not a symbolic
+ * one, the function will return the result from gtk_icon_info_load_icon().
+ *
+ * This allows loading symbolic icons that will match the system theme.
+ *
+ * Unless you are implementing a widget, you will want to use
+ * g_themed_icon_new_with_default_fallbacks() to load the icon.
+ *
+ * As implementation details, the icon loaded needs to be of SVG type,
+ * contain the “symbolic” term as the last component of the icon name,
+ * and use the “fg”, “success”, “warning” and “error” CSS styles in the
+ * SVG file itself.
+ *
+ * See the [Symbolic Icons Specification](http://www.freedesktop.org/wiki/SymbolicIcons)
+ * for more information about symbolic icons.
+ *
+ * Returns: (transfer full): a #GdkPixbuf representing the loaded icon
+ *
+ * Since: 3.0
+ */
+GdkPixbuf *
+gtk_icon_info_load_symbolic (GtkIconInfo *icon_info,
+ const GdkRGBA *fg,
+ const GdkRGBA *success_color,
+ const GdkRGBA *warning_color,
+ const GdkRGBA *error_color,
+ gboolean *was_symbolic,
+ GError **error)
+{
+ 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);
+
+ return gtk_icon_info_load_symbolic_internal (icon_info,
+ fg, success_color,
+ warning_color, error_color,
+ TRUE,
+ error);
+}
+
+void
+gtk_icon_theme_lookup_symbolic_colors (GtkCssStyle *style,
+ GdkRGBA *color_out,
+ GdkRGBA *success_out,
+ GdkRGBA *warning_out,
+ GdkRGBA *error_out)
+{
+ GtkCssValue *palette, *color;
+ const GdkRGBA *lookup;
+
+ color = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_COLOR);
+ palette = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_PALETTE);
+ *color_out = *_gtk_css_rgba_value_get_rgba (color);
+
+ lookup = gtk_css_palette_value_get_color (palette, "success");
+ if (lookup)
+ *success_out = *lookup;
+ else
+ *success_out = *color_out;
+
+ lookup = gtk_css_palette_value_get_color (palette, "warning");
+ if (lookup)
+ *warning_out = *lookup;
+ else
+ *warning_out = *color_out;
+
+ lookup = gtk_css_palette_value_get_color (palette, "error");
+ if (lookup)
+ *error_out = *lookup;
+ else
+ *error_out = *color_out;
+}
+
+/**
+ * gtk_icon_info_load_symbolic_for_context:
+ * @icon_info: a #GtkIconInfo
+ * @context: a #GtkStyleContext
+ * @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
+ * loaded icon was a symbolic one and whether the @fg color was
+ * applied to it.
+ * @error: (allow-none): location to store error information on failure,
+ * or %NULL.
+ *
+ * Loads an icon, modifying it to match the system colors for the foreground,
+ * success, warning and error colors provided. If the icon is not a symbolic
+ * one, the function will return the result from gtk_icon_info_load_icon().
+ * This function uses the regular foreground color and the symbolic colors
+ * with the names “success_color”, “warning_color” and “error_color” from
+ * the context.
+ *
+ * This allows loading symbolic icons that will match the system theme.
+ *
+ * See gtk_icon_info_load_symbolic() for more details.
+ *
+ * Returns: (transfer full): a #GdkPixbuf representing the loaded icon
+ *
+ * Since: 3.0
+ */
+GdkPixbuf *
+gtk_icon_info_load_symbolic_for_context (GtkIconInfo *icon_info,
+ GtkStyleContext *context,
+ gboolean *was_symbolic,
+ GError **error)
+{
+ GdkRGBA fg;
+ GdkRGBA success_color;
+ GdkRGBA warning_color;
+ GdkRGBA error_color;
+ gboolean is_symbolic;
+
+ 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);
+
+ return gtk_icon_info_load_symbolic_internal (icon_info,
+ &fg, &success_color,
+ &warning_color, &error_color,
+ TRUE,
+ error);
+}
+
+typedef struct {
+ gboolean is_symbolic;
+ GtkIconInfo *dup;
+ GdkRGBA fg;
+ gboolean fg_set;
+ GdkRGBA success_color;
+ gboolean success_color_set;
+ GdkRGBA warning_color;
+ gboolean warning_color_set;
+ GdkRGBA error_color;
+ gboolean error_color_set;
+} 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;
+ GdkPixbuf *pixbuf;
+
+ pixbuf = gtk_icon_info_load_icon_finish (icon_info, res, &error);
+ if (pixbuf == NULL)
+ g_task_return_error (task, error);
+ else
+ g_task_return_pointer (task, pixbuf, 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,
+ FALSE,
+ &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:
+ * @icon_info: 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.
+ *
+ * Since: 3.8
+ */
+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;
+ SymbolicPixbufCache *symbolic_cache;
+ GdkPixbuf *pixbuf;
+
+ 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
+ {
+ symbolic_cache = symbolic_pixbuf_cache_matches (icon_info->symbolic_pixbuf_cache,
+ fg, success_color, warning_color, error_color);
+ if (symbolic_cache)
+ {
+ pixbuf = symbolic_cache_get_proxy (symbolic_cache, icon_info);
+ g_task_return_pointer (task, pixbuf, g_object_unref);
+ }
+ 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:
+ * @icon_info: 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; this may be a newly
+ * created icon or a new reference to an internal icon, so you must
+ * not modify the icon. Use g_object_unref() to release your reference
+ * to the icon.
+ *
+ * Since: 3.8
+ */
+GdkPixbuf *
+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);
+ SymbolicPixbufCache *symbolic_cache;
+ GdkPixbuf *pixbuf;
+
+ 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 */
+
+ symbolic_cache = symbolic_pixbuf_cache_matches (icon_info->symbolic_pixbuf_cache,
+ 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);
+
+ if (symbolic_cache == NULL)
+ {
+ symbolic_cache = icon_info->symbolic_pixbuf_cache =
+ symbolic_pixbuf_cache_new (pixbuf,
+ 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,
+ icon_info->symbolic_pixbuf_cache);
+ }
+
+ g_object_unref (pixbuf);
+
+ return symbolic_cache_get_proxy (symbolic_cache, icon_info);
+ }
+
+ return g_task_propagate_pointer (task, error);
+}
+
+/**
+ * gtk_icon_info_load_symbolic_for_context_async:
+ * @icon_info: 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.
+ *
+ * Since: 3.8
+ */
+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:
+ * @icon_info: 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.
+ *
+ * Since: 3.8
+ */
+GdkPixbuf *
+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);
+}
+
+static GdkRGBA *
+color_to_rgba (GdkColor *color,
+ GdkRGBA *rgba)
+{
+ rgba->red = color->red / 65535.0;
+ rgba->green = color->green / 65535.0;
+ rgba->blue = color->blue / 65535.0;
+ rgba->alpha = 1.0;
+ return rgba;
+}
+
+/**
+ * gtk_icon_info_load_symbolic_for_style:
+ * @icon_info: a #GtkIconInfo
+ * @style: a #GtkStyle to take the colors from
+ * @state: the widget state to use for colors
+ * @was_symbolic: (out) (allow-none): a #gboolean, returns whether the
+ * loaded icon was a symbolic one and whether the @fg color was
+ * applied to it.
+ * @error: (allow-none): location to store error information on failure,
+ * or %NULL.
+ *
+ * Loads an icon, modifying it to match the system colours for the foreground,
+ * success, warning and error colors provided. If the icon is not a symbolic
+ * one, the function will return the result from gtk_icon_info_load_icon().
+ *
+ * This allows loading symbolic icons that will match the system theme.
+ *
+ * See gtk_icon_info_load_symbolic() for more details.
+ *
+ * Returns: (transfer full): a #GdkPixbuf representing the loaded icon
+ *
+ * Since: 3.0
+ *
+ * Deprecated: 3.0: Use gtk_icon_info_load_symbolic_for_context() instead
+ */
+GdkPixbuf *
+gtk_icon_info_load_symbolic_for_style (GtkIconInfo *icon_info,
+ GtkStyle *style,
+ GtkStateType state,
+ gboolean *was_symbolic,
+ GError **error)
+{
+ GdkColor color;
+ GdkRGBA fg;
+ GdkRGBA success_color;
+ GdkRGBA *success_colorp;
+ GdkRGBA warning_color;
+ GdkRGBA *warning_colorp;
+ GdkRGBA error_color;
+ GdkRGBA *error_colorp;
+ gboolean is_symbolic;
+
+ g_return_val_if_fail (icon_info != NULL, NULL);
+ g_return_val_if_fail (style != 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);
+
+ color_to_rgba (&style->fg[state], &fg);
+
+ success_colorp = warning_colorp = error_colorp = NULL;
+
+ if (gtk_style_lookup_color (style, "success_color", &color))
+ success_colorp = color_to_rgba (&color, &success_color);
+
+ if (gtk_style_lookup_color (style, "warning_color", &color))
+ warning_colorp = color_to_rgba (&color, &warning_color);
+
+ if (gtk_style_lookup_color (style, "error_color", &color))
+ error_colorp = color_to_rgba (&color, &error_color);
+
+ return gtk_icon_info_load_symbolic_internal (icon_info,
+ &fg, success_colorp,
+ warning_colorp, error_colorp,
+ TRUE,
+ error);
+}
+
+/**
+ * gtk_icon_info_set_raw_coordinates:
+ * @icon_info: a #GtkIconInfo
+ * @raw_coordinates: whether the coordinates of embedded rectangles
+ * and attached points should be returned in their original
+ * (unscaled) form.
+ *
+ * Sets whether the coordinates returned by gtk_icon_info_get_embedded_rect()
+ * and gtk_icon_info_get_attach_points() should be returned in their
+ * original form as specified in the icon theme, instead of scaled
+ * appropriately for the pixbuf returned by gtk_icon_info_load_icon().
+ *
+ * Raw coordinates are somewhat strange; they are specified to be with
+ * respect to the unscaled pixmap for PNG and XPM icons, but for SVG
+ * icons, they are in a 1000x1000 coordinate space that is scaled
+ * to the final size of the icon. You can determine if the icon is an SVG
+ * icon by using gtk_icon_info_get_filename(), and seeing if it is non-%NULL
+ * and ends in “.svg”.
+ *
+ * This function is provided primarily to allow compatibility wrappers
+ * for older API's, and is not expected to be useful for applications.
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.14: Embedded rectangles and attachment points are deprecated
+ */
+void
+gtk_icon_info_set_raw_coordinates (GtkIconInfo *icon_info,
+ gboolean raw_coordinates)
+{
+}
+
+/**
+ * gtk_icon_info_get_embedded_rect:
+ * @icon_info: a #GtkIconInfo
+ * @rectangle: (out): #GdkRectangle in which to store embedded
+ * rectangle coordinates; coordinates are only stored
+ * when this function returns %TRUE.
+ *
+ * This function is deprecated and always returns %FALSE.
+ *
+ * Returns: %FALSE
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.14: Embedded rectangles are deprecated
+ */
+gboolean
+gtk_icon_info_get_embedded_rect (GtkIconInfo *icon_info,
+ GdkRectangle *rectangle)
+{
+ return FALSE;
+}
+
+/**
+ * gtk_icon_info_get_attach_points:
+ * @icon_info: a #GtkIconInfo
+ * @points: (allow-none) (array length=n_points) (out): location to store pointer
+ * to an array of points, or %NULL free the array of points with g_free().
+ * @n_points: (allow-none): location to store the number of points in @points,
+ * or %NULL
+ *
+ * This function is deprecated and always returns %FALSE.
+ *
+ * Returns: %FALSE
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.14: Attachment points are deprecated
+ */
+gboolean
+gtk_icon_info_get_attach_points (GtkIconInfo *icon_info,
+ GdkPoint **points,
+ gint *n_points)
+{
+ return FALSE;
+}
+
+/**
+ * gtk_icon_info_get_display_name:
+ * @icon_info: a #GtkIconInfo
+ *
+ * This function is deprecated and always returns %NULL.
+ *
+ * Returns: %NULL
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.14: Display names are deprecated
+ */
+const gchar *
+gtk_icon_info_get_display_name (GtkIconInfo *icon_info)
+{
+ return NULL;
+}
+
+/*
+ * Builtin icons
+ */
+
+
+/**
+ * gtk_icon_theme_add_builtin_icon:
+ * @icon_name: the name of the icon to register
+ * @size: the size in pixels at which to register the icon (different
+ * images can be registered for the same icon name at different sizes.)
+ * @pixbuf: #GdkPixbuf that contains the image to use for @icon_name
+ *
+ * Registers a built-in icon for icon theme lookups. The idea
+ * of built-in icons is to allow an application or library
+ * that uses themed icons to function requiring files to
+ * be present in the file system. For instance, the default
+ * images for all of GTK+’s stock icons are registered
+ * as built-icons.
+ *
+ * In general, if you use gtk_icon_theme_add_builtin_icon()
+ * you should also install the icon in the icon theme, so
+ * that the icon is generally available.
+ *
+ * This function will generally be used with pixbufs loaded
+ * via gdk_pixbuf_new_from_inline().
+ *
+ * Since: 2.4
+ *
+ * Deprecated: 3.14: Use gtk_icon_theme_add_resource_path()
+ * to add application-specific icons to the icon theme.
+ */
+void
+gtk_icon_theme_add_builtin_icon (const gchar *icon_name,
+ gint size,
+ GdkPixbuf *pixbuf)
+{
+ BuiltinIcon *default_icon;
+ GSList *icons;
+ gpointer key;
+
+ g_return_if_fail (icon_name != NULL);
+ g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
+
+ if (!icon_theme_builtin_icons)
+ icon_theme_builtin_icons = g_hash_table_new (g_str_hash, g_str_equal);
+
+ icons = g_hash_table_lookup (icon_theme_builtin_icons, icon_name);
+ if (!icons)
+ key = g_strdup (icon_name);
+ else
+ key = (gpointer)icon_name; /* Won't get stored */
+
+ default_icon = g_new (BuiltinIcon, 1);
+ default_icon->size = size;
+ default_icon->pixbuf = g_object_ref (pixbuf);
+ icons = g_slist_prepend (icons, default_icon);
+
+ /* Replaces value, leaves key untouched
+ */
+ g_hash_table_insert (icon_theme_builtin_icons, key, icons);
+}
+
+/* Look up a builtin icon; the min_difference_p and
+ * has_larger_p out parameters allow us to combine
+ * this lookup with searching through the actual directories
+ * of the “hicolor” icon theme. See theme_lookup_icon()
+ * for how they are used.
+ */
+static BuiltinIcon *
+find_builtin_icon (const gchar *icon_name,
+ gint size,
+ gint scale,
+ gint *min_difference_p)
+{
+ GSList *icons = NULL;
+ gint min_difference = G_MAXINT;
+ gboolean has_larger = FALSE;
+ BuiltinIcon *min_icon = NULL;
+
+ if (!icon_theme_builtin_icons)
+ return NULL;
+
+ size *= scale;
+
+ icons = g_hash_table_lookup (icon_theme_builtin_icons, icon_name);
+
+ while (icons)
+ {
+ BuiltinIcon *default_icon = icons->data;
+ int min, max, difference;
+ gboolean smaller;
+
+ min = default_icon->size - 2;
+ max = default_icon->size + 2;
+ smaller = size < min;
+ if (size < min)
+ difference = min - size;
+ else if (size > max)
+ difference = size - max;
+ else
+ difference = 0;
+
+ if (difference == 0)
+ {
+ min_difference = 0;
+ min_icon = default_icon;
+ break;
+ }
+
+ if (!has_larger)
+ {
+ if (difference < min_difference || smaller)
+ {
+ min_difference = difference;
+ min_icon = default_icon;
+ has_larger = smaller;
+ }
+ }
+ else
+ {
+ if (difference < min_difference && smaller)
+ {
+ min_difference = difference;
+ min_icon = default_icon;
+ }
+ }
+
+ icons = icons->next;
+ }
+
+ if (min_difference_p)
+ *min_difference_p = min_difference;
+
+ return min_icon;
+}
+
+/**
+ * gtk_icon_theme_lookup_by_gicon:
+ * @icon_theme: a #GtkIconTheme
+ * @icon: the #GIcon to look up
+ * @size: desired icon size
+ * @flags: flags modifying the behavior of the icon lookup
+ *
+ * Looks up an icon and returns a #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_window_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()
+ *
+ * Since: 2.14
+ */
+GtkIconInfo *
+gtk_icon_theme_lookup_by_gicon (GtkIconTheme *icon_theme,
+ GIcon *icon,
+ gint size,
+ GtkIconLookupFlags flags)
+{
+ return gtk_icon_theme_lookup_by_gicon_for_scale (icon_theme, icon,
+ size, 1, flags);
+}
+
+
+/**
+ * gtk_icon_theme_lookup_by_gicon_for_scale:
+ * @icon_theme: 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()
+ *
+ * Since: 3.10
+ */
+GtkIconInfo *
+gtk_icon_theme_lookup_by_gicon_for_scale (GtkIconTheme *icon_theme,
+ GIcon *icon,
+ gint size,
+ gint scale,
+ GtkIconLookupFlags flags)
+{
+ GtkIconInfo *info;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (G_IS_ICON (icon), NULL);
+ 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;
+ GdkPixbuf *scaled;
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+ max = MAX (width, height);
+ pixbuf_scale = (gdouble) size * scale / (gdouble) max;
+
+ 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 (icon_theme, scaled);
+
+ g_object_unref (scaled);
+ }
+ else
+ {
+ info = gtk_icon_info_new_for_pixbuf (icon_theme, 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 (icon_theme, names, size, scale, flags);
+
+ return info;
+ }
+ else if (G_IS_EMBLEMED_ICON (icon))
+ {
+ GIcon *base, *emblem;
+ GList *list, *l;
+ GtkIconInfo *base_info, *emblem_info;
+
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+ if (GTK_IS_NUMERABLE_ICON (icon))
+ _gtk_numerable_icon_set_background_icon_size (GTK_NUMERABLE_ICON (icon), size / 2);
+G_GNUC_END_IGNORE_DEPRECATIONS
+
+ base = g_emblemed_icon_get_icon (G_EMBLEMED_ICON (icon));
+ base_info = gtk_icon_theme_lookup_by_gicon_for_scale (icon_theme, base, size, scale, flags);
+ if (base_info)
+ {
+ info = icon_info_dup (base_info);
+ g_object_unref (base_info);
+
+ list = g_emblemed_icon_get_emblems (G_EMBLEMED_ICON (icon));
+ for (l = list; l; l = l->next)
+ {
+ emblem = g_emblem_get_icon (G_EMBLEM (l->data));
+ /* always force size for emblems */
+ emblem_info = gtk_icon_theme_lookup_by_gicon_for_scale (icon_theme, emblem, size / 2, scale, flags | GTK_ICON_LOOKUP_FORCE_SIZE);
+ if (emblem_info)
+ info->emblem_infos = g_slist_prepend (info->emblem_infos, emblem_info);
+ }
+
+ return info;
+ }
+ else
+ return NULL;
+ }
+
+ return NULL;
+}
+
+/**
+ * gtk_icon_info_new_for_pixbuf:
+ * @icon_theme: a #GtkIconTheme
+ * @pixbuf: the pixbuf to wrap in a #GtkIconInfo
+ *
+ * Creates a #GtkIconInfo for a #GdkPixbuf.
+ *
+ * Returns: (transfer full): a #GtkIconInfo
+ *
+ * Since: 2.14
+ */
+GtkIconInfo *
+gtk_icon_info_new_for_pixbuf (GtkIconTheme *icon_theme,
+ GdkPixbuf *pixbuf)
+{
+ GtkIconInfo *info;
+
+ g_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
+ g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
+
+ info = icon_info_new (ICON_THEME_DIR_UNTHEMED, 0, 1);
+ info->pixbuf = g_object_ref (pixbuf);
+ info->scale = 1.0;
+
+ return info;
+}
+
+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->icon_file = g_object_ref (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;
+}
projects / gnome-shell.git / commitdiff