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gtk2/gtk/gtkicontheme.c
Matthias Clasen 19b534f7de Avoid copying static debug strings 
The g_source_set_name calls were showing up as a
major source of strdups in our profiles. Avoid that
by using new GLib api when available.
2021-07-28 22:42:46 -04:00

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/* GtkIconTheme - a loader for icon themes
* gtk-icon-theme.c Copyright (C) 2002, 2003 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <glib.h>
#include <glib/gstdio.h>
#ifdef G_OS_WIN32
#ifndef S_ISDIR
#define S_ISDIR(mode) ((mode)&_S_IFDIR)
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <shellapi.h>
#include "win32/gdkwin32.h"
#endif /* G_OS_WIN32 */
#include "gtkiconthemeprivate.h"
#include "gtkcsspalettevalueprivate.h"
#include "gtkcsscolorvalueprivate.h"
#include "gtkdebug.h"
#include "gtkiconcacheprivate.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtksettingsprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkstyleproviderprivate.h"
#include "gtkprivate.h"
#include "gtksnapshot.h"
#include "gtkwidgetprivate.h"
#include "gdkpixbufutilsprivate.h"
#include "gdk/gdktextureprivate.h"
#include "gdk/gdkprofilerprivate.h"
#define GDK_ARRAY_ELEMENT_TYPE char *
#define GDK_ARRAY_NULL_TERMINATED 1
#define GDK_ARRAY_FREE_FUNC g_free
#define GDK_ARRAY_TYPE_NAME GtkStrvBuilder
#define GDK_ARRAY_NAME gtk_strv_builder
#define GDK_ARRAY_PREALLOC 16
#include "gdk/gdkarrayimpl.c"
/**
* GtkIconTheme:
*
* `GtkIconTheme` provides a facility for loading themed icons.
*
* The main reason for using a name rather than simply providing a filename
* is to allow different icons to be used depending on what “icon theme” is
* selected by the user. The operation of icon themes on Linux and Unix
* follows the [Icon Theme Specification](http://www.freedesktop.org/Standards/icon-theme-spec)
* There is a fallback icon theme, named `hicolor`, where applications
* should install their icons, but additional icon themes can be installed
* as operating system vendors and users choose.
*
* In many cases, named themes are used indirectly, via [class@Gtk.Image]
* 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 of the `GtkWidget` so that the
* icon information is shared with other people looking up icons.
*
* ```c
* GtkIconTheme *icon_theme;
* GtkIconPaintable *icon;
* GdkPaintable *paintable;
*
* icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (my_widget));
* icon = gtk_icon_theme_lookup_icon (icon_theme,
* "my-icon-name", // icon name
* 48, // icon size
* 1, // scale
* 0, // flags);
* paintable = GDK_PAINTABLE (icon);
* // Use the paintable
* g_object_unref (icon);
* ```
*/
/* There are a lot of icon names (around 1000 in adwaita and 1000 in
* hicolor), and the are short, which makes individual allocations
* wasteful (i.e. glibc malloc min chunk size is 32 byte), so we and
* fragmenting. Instead we store the string in larger chunks of memory
* for the string data, avoiding duplicates via a hash.
*
* Additionally, doing a up-front hash lookup to intern an
* icon name allows further hash lookups (for each directory in
* the theme) to use g_direct_hash/equal() which makes those
* lookups faster.
*/
typedef struct _GtkStringSetChunk GtkStringSetChunk;
/* This size allows a malloc to be one page, including the next_chunk
pointer and the malloc overhead, which is a good size (one page) */
#define STRING_SET_CHUNK_SIZE (4096 - 2 *sizeof (gpointer))
struct _GtkStringSetChunk {
GtkStringSetChunk *next;
char data[STRING_SET_CHUNK_SIZE];
};
struct _GtkStringSet {
GHashTable *hash;
GtkStringSetChunk *chunks;
int used_in_chunk;
};
static void
gtk_string_set_init (GtkStringSet *set)
{
set->hash = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
set->chunks = NULL;
set->used_in_chunk = STRING_SET_CHUNK_SIZE; /* To trigger a grow directly */
}
static void
gtk_string_set_destroy (GtkStringSet *set)
{
GtkStringSetChunk *next, *chunk;
g_hash_table_destroy (set->hash);
for (chunk = set->chunks; chunk != NULL; chunk = next)
{
next = chunk->next;
g_free (chunk);
}
}
static const char *
gtk_string_set_lookup (GtkStringSet *set,
const char *string)
{
return g_hash_table_lookup (set->hash, string);
}
static void
gtk_string_set_list (GtkStringSet *set,
GHashTable *result)
{
GHashTableIter iter;
gpointer key;
g_hash_table_iter_init (&iter, set->hash);
while (g_hash_table_iter_next (&iter, &key, NULL))
{
char *string = key;
g_hash_table_insert (result, string, string);
}
}
const char *
gtk_string_set_add (GtkStringSet *set,
const char *string)
{
const char *intern = g_hash_table_lookup (set->hash, string);
if (intern == NULL)
{
GtkStringSetChunk *chunk;
int string_len = strlen (string) + 1;
if (string_len > STRING_SET_CHUNK_SIZE - set->used_in_chunk)
{
gsize chunk_size = sizeof (GtkStringSetChunk);
/* Doesn't fit in existing chunk, need a new one. Normally
* we allocate one of regular size, but in the case the
* string is longer than CHUNK_SIZE that we allocate enough
* for it to fit this one string. */
if (string_len > STRING_SET_CHUNK_SIZE)
chunk_size += string_len - STRING_SET_CHUNK_SIZE;
chunk = g_malloc (chunk_size);
chunk->next = set->chunks;
set->chunks = chunk;
set->used_in_chunk = 0;
}
else
{
/* We fit in existing chunk */
chunk = set->chunks;
}
intern = &chunk->data[set->used_in_chunk];
memcpy ((char *)intern, string, string_len);
set->used_in_chunk += string_len;
g_hash_table_insert (set->hash, (char *)intern, (char *)intern);
}
return intern;
}
/* Threading:
*
* GtkIconTheme is partially threadsafe, construction and setup can
* only be done on the main thread (and this is not really fixable
* since it uses other things like GdkDisplay and GSettings and
* signals on those. However, once the icon theme is set up on the
* main thread we can pass it to a thread and do basic lookups on
* it. This will cause any parallel calls on the main thread (or any
* other thread) to block until its done, but most of the time
* lookups are fast. The only time its not fast is when we need
* to rescan the theme, but then it would be slow if we didn't block
* and did the rescan ourselves anyway.
*
* All private functions that take a GtkIconTheme (or one of its
* private data types (like IconThemeDir, UnthemedIcon, etc) arg are
* expected to be called with the icon theme lock held, unless the
* function has a _unlocked suffix. Any similar function that must be
* called on the main thread, will have a _mainthread suffix.
*
* So the rules for such functions are:
*
* * non-_unlocked function cannot call _unlocked functions.
* * _unlocked must lock before calling a non-_unlocked.
* * non-_mainthread cannot call _mainthread.
* * Public APIs must lock before calling a non-_unlocked private function
* * Public APIs that never call _mainthread are threadsafe.
*
* There is a global "icon_cache" G_LOCK, which protects icon_cache
* and lru_cache in GtkIconTheme as well as its reverse pointer
* GtkIcon->in_cache. This is sometimes taken with the theme lock held
* (from the theme side) and sometimes not (from the icon side),
* but we never take another lock after taking it, so this is safe.
* Since this is a global (not per icon/theme) lock we should never
* block while holding it.
*
* Sometimes there are "weak" references to the icon theme that can
* call into the icon theme. For example, from the "theme-changed"
* signal. Since these don't own the theme they can run in parallel
* with some other thread which could be finalizing the theme. To
* avoid this all such references are done via the GtkIconThemeRef
* object which contains an NULL:able pointer to the theme and the
* main lock for that theme. Using this we can safely generate a ref
* for the theme if it still lives (or get NULL if it doesn't).
*
* The icon theme needs to call into the icons sometimes, for example
* when checking if it should be cached (icon_should_cache__unlocked)
* this takes the icon->texture_lock while the icon theme is locked.
* In order to avoid ABBA style deadlocks this means the icon code
* should never try to lock an icon theme.
*/
#define FALLBACK_ICON_THEME "hicolor"
typedef enum
{
ICON_THEME_DIR_FIXED,
ICON_THEME_DIR_SCALABLE,
ICON_THEME_DIR_THRESHOLD,
ICON_THEME_DIR_UNTHEMED
} IconThemeDirType;
#if 0
#define DEBUG_CACHE(args) g_print args
#else
#define DEBUG_CACHE(args)
#endif
#define LRU_CACHE_SIZE 100
#define MAX_LRU_TEXTURE_SIZE 128
typedef struct _GtkIconPaintableClass GtkIconPaintableClass;
typedef struct _GtkIconThemeClass GtkIconThemeClass;
typedef struct _GtkIconThemeRef GtkIconThemeRef;
/* Acts as a database of information about an icon theme.
* Normally, you retrieve the icon theme for a particular
* display using gtk_icon_theme_get_for_display() and it
* will contain information about current icon theme for
* that display, but you can also create a new `GtkIconTheme`
* object and set the icon theme name explicitly using
* gtk_icon_theme_set_theme_name().
*/
struct _GtkIconTheme
{
GObject parent_instance;
GtkIconThemeRef *ref;
GHashTable *icon_cache; /* Protected by icon_cache lock */
GtkIconPaintable *lru_cache[LRU_CACHE_SIZE]; /* Protected by icon_cache lock */
int lru_cache_current; /* Protected by icon_cache lock */
char *current_theme;
char **search_path;
char **resource_path;
guint custom_theme : 1;
guint is_display_singleton : 1;
guint pixbuf_supports_svg : 1;
guint themes_valid : 1;
/* A list of all the themes needed to look up icons.
* In search order, without duplicates
*/
GList *themes;
GHashTable *unthemed_icons;
/* GdkDisplay for the icon theme (may be NULL) */
GdkDisplay *display;
GtkSettings *display_settings;
/* time when we last stat:ed for theme changes */
gint64 last_stat_time;
GArray *dir_mtimes;
gulong theme_changed_idle;
int serial;
};
struct _GtkIconThemeClass
{
GObjectClass parent_class;
void (* changed) (GtkIconTheme *self);
};
typedef struct {
char **icon_names;
int size;
int scale;
GtkIconLookupFlags flags;
} IconKey;
struct _GtkIconPaintableClass
{
GObjectClass parent_class;
};
/* This lock protects both IconTheme.icon_cache and the dependent Icon.in_cache.
* Its a global lock, so hold it only for short times. */
G_LOCK_DEFINE_STATIC(icon_cache);
/**
* GtkIconPaintable:
*
* Contains information found when looking up an icon in `GtkIconTheme`.
*
* `GtkIconPaintable` implements `GdkPaintable`.
*/
struct _GtkIconPaintable
{
GObject parent_instance;
/* Information about the source
*/
IconKey key;
GtkIconTheme *in_cache; /* Protected by icon_cache lock */
char *icon_name;
char *filename;
GLoadableIcon *loadable;
#ifdef G_OS_WIN32
/* win32 icon (if there is any) */
GdkPixbuf *win32_icon;
#endif
/* Parameters influencing the scaled icon
*/
int desired_size;
int desired_scale;
guint is_svg : 1;
guint is_resource : 1;
guint is_symbolic : 1;
/* Cached information if we go ahead and try to load the icon.
*
* All access to these are protected by the texture_lock. Everything
* above is immutable after construction and can be used without
* locks.
*/
GMutex texture_lock;
GdkTexture *texture;
};
typedef struct
{
char *name;
char *display_name;
char *comment;
GArray *dir_sizes; /* IconThemeDirSize */
GArray *dirs; /* IconThemeDir */
GtkStringSet icons;
} IconTheme;
typedef struct
{
guint16 dir_index; /* index in dirs */
guint8 best_suffix;
guint8 best_suffix_no_svg;
} IconThemeFile;
typedef struct
{
IconThemeDirType type;
int size;
int min_size;
int max_size;
int threshold;
int scale;
GArray *icon_files;
GHashTable *icon_hash; /* name (interned) -> file index */
} IconThemeDirSize;
typedef struct
{
gboolean is_resource;
char *path; /* e.g. "/usr/share/icons/hicolor/32x32/apps" */
} IconThemeDir;
typedef struct
{
char *svg_filename;
char *no_svg_filename;
gboolean is_resource;
} UnthemedIcon;
typedef struct
{
char *dir;
time_t mtime;
GtkIconCache *cache;
gboolean exists;
} IconThemeDirMtime;
static void gtk_icon_theme_finalize (GObject *object);
static void gtk_icon_theme_dispose (GObject *object);
static IconTheme * theme_new (const char *theme_name,
GKeyFile *theme_file);
static void theme_dir_size_destroy (IconThemeDirSize *dir_size);
static void theme_dir_destroy (IconThemeDir *dir);
static void theme_destroy (IconTheme *theme);
static GtkIconPaintable *theme_lookup_icon (IconTheme *theme,
const char *icon_name,
int size,
int scale,
gboolean allow_svg);
static gboolean theme_has_icon (IconTheme *theme,
const char *icon_name);
static void theme_subdir_load (GtkIconTheme *self,
IconTheme *theme,
GKeyFile *theme_file,
char *subdir);
static void do_theme_change (GtkIconTheme *self);
static void blow_themes (GtkIconTheme *self);
static gboolean rescan_themes (GtkIconTheme *self);
static GtkIconPaintable *icon_paintable_new (const char *icon_name,
int desired_size,
int desired_scale);
static IconCacheFlag suffix_from_name (const char *name);
static void icon_ensure_texture__locked (GtkIconPaintable *icon,
gboolean in_thread);
static void gtk_icon_theme_unset_display (GtkIconTheme *self);
static void gtk_icon_theme_set_display (GtkIconTheme *self,
GdkDisplay *display);
static void update_current_theme__mainthread (GtkIconTheme *self);
static gboolean ensure_valid_themes (GtkIconTheme *self,
gboolean non_blocking);
static guint signal_changed = 0;
/* This is like a weak ref with a lock, anyone doing
* operations on the theme must take the lock in this,
* but you can also take the lock even if the theme
* has been finalized (but theme will then be NULL).
*
* This is used to avoid race conditions where signals
* like theme-changed happen on the main thread while
* the last active owning ref of the icon theme is
* on some thread.
*/
struct _GtkIconThemeRef
{
gatomicrefcount count;
GMutex lock;
GtkIconTheme *theme;
};
static GtkIconThemeRef *
gtk_icon_theme_ref_new (GtkIconTheme *theme)
{
GtkIconThemeRef *ref = g_new0 (GtkIconThemeRef, 1);
g_atomic_ref_count_init (&ref->count);
g_mutex_init (&ref->lock);
ref->theme = theme;
return ref;
}
static GtkIconThemeRef *
gtk_icon_theme_ref_ref (GtkIconThemeRef *ref)
{
g_atomic_ref_count_inc (&ref->count);
return ref;
}
static void
gtk_icon_theme_ref_unref (GtkIconThemeRef *ref)
{
if (g_atomic_ref_count_dec (&ref->count))
{
g_assert (ref->theme == NULL);
g_mutex_clear (&ref->lock);
g_free (ref);
}
}
/* Take the lock and if available ensure the theme lives until (at
* least) ref_release is called. */
static GtkIconTheme *
gtk_icon_theme_ref_aquire (GtkIconThemeRef *ref)
{
g_mutex_lock (&ref->lock);
if (ref->theme)
g_object_ref (ref->theme);
return ref->theme;
}
static void
gtk_icon_theme_ref_release (GtkIconThemeRef *ref)
{
GtkIconTheme *theme;
/* Get a pointer to the theme, because when we unlock it could become NULLed by dispose, this pointer still owns a ref */
theme = ref->theme;
g_mutex_unlock (&ref->lock);
/* Then unref outside the lock, because otherwise if this is the last ref the dispose handler would deadlock trying to NULL ref->theme */
if (theme)
g_object_unref (theme);
}
static void
gtk_icon_theme_ref_dispose (GtkIconThemeRef *ref)
{
gtk_icon_theme_ref_aquire (ref);
ref->theme = NULL;
gtk_icon_theme_ref_release (ref);
}
static void
gtk_icon_theme_lock (GtkIconTheme *self)
{
g_mutex_lock (&self->ref->lock);
}
static void
gtk_icon_theme_unlock (GtkIconTheme *self)
{
g_mutex_unlock (&self->ref->lock);
}
static guint
icon_key_hash (gconstpointer _key)
{
const IconKey *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_key_equal (gconstpointer _a,
gconstpointer _b)
{
const IconKey *a = _a;
const IconKey *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;
}
/****************** Icon cache ***********************
*
* The icon cache, this spans both GtkIconTheme and GtkIcon, so the locking is
* a bit tricky. Never do block with the lock held, and never do any
* callouts to other code. In particular, don't call theme or finalizers
* because that will take the lock when removing from the icon cache.
*/
/* This is called with icon_cache lock held so must not take any locks */
static gboolean
_icon_cache_should_lru_cache (GtkIconPaintable *icon)
{
return icon->desired_size <= MAX_LRU_TEXTURE_SIZE;
}
/* This returns the old lru element because we can't unref it with
* the lock held */
static GtkIconPaintable *
_icon_cache_add_to_lru_cache (GtkIconTheme *theme,
GtkIconPaintable *icon)
{
GtkIconPaintable *old_icon = NULL;
/* Avoid storing the same info multiple times in a row */
if (theme->lru_cache[theme->lru_cache_current] != icon)
{
theme->lru_cache_current = (theme->lru_cache_current + 1) % LRU_CACHE_SIZE;
old_icon = theme->lru_cache[theme->lru_cache_current];
theme->lru_cache[theme->lru_cache_current] = g_object_ref (icon);
}
return old_icon;
}
static GtkIconPaintable *
icon_cache_lookup (GtkIconTheme *theme,
IconKey *key)
{
GtkIconPaintable *old_icon = NULL;
GtkIconPaintable *icon;
G_LOCK (icon_cache);
icon = g_hash_table_lookup (theme->icon_cache, key);
if (icon != NULL)
{
DEBUG_CACHE (("cache hit %p (%s %d 0x%x) (cache size %d)\n",
icon,
g_strjoinv (",", icon->key.icon_names),
icon->key.size, icon->key.flags,
g_hash_table_size (theme->icon_cache)));
icon = g_object_ref (icon);
/* Move item to front in LRU cache */
if (_icon_cache_should_lru_cache (icon))
old_icon = _icon_cache_add_to_lru_cache (theme, icon);
}
G_UNLOCK (icon_cache);
/* Call potential finalizer outside the lock */
if (old_icon)
g_object_unref (old_icon);
return icon;
}
/* The icon was removed from the icon_hash hash table.
* This is a callback from the icon_cache hashtable, so the icon_cache lock is already held.
*/
static void
icon_uncached_cb (GtkIconPaintable *icon)
{
DEBUG_CACHE (("removing %p (%s %d 0x%x) from cache (icon_them: %p) (cache size %d)\n",
icon,
g_strjoinv (",", icon->key.icon_names),
icon->key.size, icon->key.flags,
self,
icon_theme != NULL ? g_hash_table_size (self->icon_cache) : 0));
g_assert (icon->in_cache != NULL);
icon->in_cache = NULL;
}
static void
icon_cache_mark_used_if_cached (GtkIconPaintable *icon)
{
GtkIconPaintable *old_icon = NULL;
if (!_icon_cache_should_lru_cache (icon))
return;
G_LOCK (icon_cache);
if (icon->in_cache)
old_icon = _icon_cache_add_to_lru_cache (icon->in_cache, icon);
G_UNLOCK (icon_cache);
/* Call potential finalizers outside the lock */
if (old_icon)
g_object_unref (old_icon);
}
static void
icon_cache_add (GtkIconTheme *theme,
GtkIconPaintable *icon)
{
GtkIconPaintable *old_icon = NULL;
G_LOCK (icon_cache);
icon->in_cache = theme;
g_hash_table_insert (theme->icon_cache, &icon->key, icon);
if (_icon_cache_should_lru_cache (icon))
old_icon = _icon_cache_add_to_lru_cache (theme, icon);
DEBUG_CACHE (("adding %p (%s %d 0x%x) to cache (cache size %d)\n",
icon,
g_strjoinv (",", icon->key.icon_names),
icon->key.size, icon->key.flags,
g_hash_table_size (theme->icon_cache)));
G_UNLOCK (icon_cache);
/* Call potential finalizer outside the lock */
if (old_icon)
g_object_unref (old_icon);
}
static void
icon_cache_remove (GtkIconPaintable *icon)
{
G_LOCK (icon_cache);
if (icon->in_cache)
g_hash_table_remove (icon->in_cache->icon_cache, &icon->key);
G_UNLOCK (icon_cache);
}
static void
icon_cache_clear (GtkIconTheme *theme)
{
int i;
GtkIconPaintable *old_icons[LRU_CACHE_SIZE];
G_LOCK (icon_cache);
g_hash_table_remove_all (theme->icon_cache);
for (i = 0; i < LRU_CACHE_SIZE; i ++)
{
old_icons[i] = theme->lru_cache[i];
theme->lru_cache[i] = NULL;
}
G_UNLOCK (icon_cache);
/* Call potential finalizers outside the lock */
for (i = 0; i < LRU_CACHE_SIZE; i ++)
{
if (old_icons[i] != NULL)
g_object_unref (old_icons[i]);
}
}
/****************** End of icon cache ***********************/
G_DEFINE_TYPE (GtkIconTheme, gtk_icon_theme, G_TYPE_OBJECT)
/**
* gtk_icon_theme_new:
*
* Creates a new icon theme object.
*
* Icon theme objects are used to lookup up an icon by name
* in a particular icon theme. Usually, you’ll want to use
* [func@Gtk.IconTheme.get_for_display] rather than creating
* a new icon theme object for scratch.
*
* Returns: the newly created `GtkIconTheme` object.
*/
GtkIconTheme *
gtk_icon_theme_new (void)
{
return g_object_new (GTK_TYPE_ICON_THEME, NULL);
}
static void
load_theme_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GtkIconTheme *self = GTK_ICON_THEME (source_object);
gtk_icon_theme_lock (self);
ensure_valid_themes (self, FALSE);
gtk_icon_theme_unlock (self);
g_task_return_pointer (task, NULL, NULL);
}
static void
gtk_icon_theme_load_in_thread (GtkIconTheme *self)
{
GTask *task;
task = g_task_new (self, NULL, NULL, NULL);
g_task_set_task_data (task, g_object_ref (self), g_object_unref);
g_task_run_in_thread (task, load_theme_thread);
g_object_unref (task);
}
/**
* gtk_icon_theme_get_for_display:
* @display: a `GdkDisplay`
*
* Gets the icon theme object associated with @display.
*
* If this function has not previously been called for the given
* display, a new icon theme object will be created and associated
* with the display. Icon theme objects are fairly expensive to create,
* so using this function is usually a better choice than calling
* [ctor@Gtk.IconTheme.new] and setting the display yourself; by using
* this function a single icon theme object will be shared between users.
*
* Returns: (transfer none): A unique `GtkIconTheme` associated with
* the given display. This icon theme is associated with the display
* and can be used as long as the display is open. Do not ref or unref it.
*/
GtkIconTheme *
gtk_icon_theme_get_for_display (GdkDisplay *display)
{
GtkIconTheme *self;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
self = g_object_get_data (G_OBJECT (display), "gtk-icon-theme");
if (!self)
{
self = gtk_icon_theme_new ();
self->is_display_singleton = TRUE;
g_object_set_data (G_OBJECT (display), I_("gtk-icon-theme"), self);
/* Call this after setting the user-data, because it recurses into gtk_icon_theme_get_for_display via the thememing machinery */
gtk_icon_theme_set_display (self, display);
/* Queue early read of the default themes, we read the icon theme name in set_display(). */
gtk_icon_theme_load_in_thread (self);
}
return self;
}
enum {
PROP_DISPLAY = 1,
PROP_ICON_NAMES,
PROP_SEARCH_PATH,
PROP_RESOURCE_PATH,
PROP_THEME_NAME,
LAST_PROP
};
static GParamSpec *props[LAST_PROP];
static void
gtk_icon_theme_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkIconTheme *self = GTK_ICON_THEME (object);
switch (prop_id)
{
case PROP_DISPLAY:
g_value_set_object (value, self->display);
break;
case PROP_ICON_NAMES:
g_value_take_boxed (value, gtk_icon_theme_get_icon_names (self));
break;
case PROP_SEARCH_PATH:
g_value_set_boxed (value, self->search_path);
break;
case PROP_RESOURCE_PATH:
g_value_set_boxed (value, self->resource_path);
break;
case PROP_THEME_NAME:
g_value_take_string (value, gtk_icon_theme_get_theme_name (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_icon_theme_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkIconTheme *self = GTK_ICON_THEME (object);
switch (prop_id)
{
case PROP_DISPLAY:
gtk_icon_theme_set_display (self, g_value_get_object (value));
break;
case PROP_SEARCH_PATH:
gtk_icon_theme_set_search_path (self, g_value_get_boxed (value));
break;
case PROP_RESOURCE_PATH:
gtk_icon_theme_set_resource_path (self, g_value_get_boxed (value));
break;
case PROP_THEME_NAME:
gtk_icon_theme_set_theme_name (self, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_icon_theme_class_init (GtkIconThemeClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = gtk_icon_theme_finalize;
gobject_class->dispose = gtk_icon_theme_dispose;
gobject_class->get_property = gtk_icon_theme_get_property;
gobject_class->set_property = gtk_icon_theme_set_property;
/**
* GtkIconTheme::changed:
* @self: the icon theme
*
* Emitted when the icon theme changes.
*
* This can happen becuase current icon theme is switched or
* because 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);
/**
* GtkIconTheme:display:
*
* The display that this icon theme object is attached to.
*/
props[PROP_DISPLAY] =
g_param_spec_object ("display",
P_("Display"),
P_("Display"),
GDK_TYPE_DISPLAY,
G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkIconTheme:icon-names:
*
* The icon names that are supported by the icon theme.
*/
props[PROP_ICON_NAMES] =
g_param_spec_boxed ("icon-names",
P_("Supported icon names"),
P_("Supported icon names"),
G_TYPE_STRV,
GTK_PARAM_READABLE);
/**
* GtkIconTheme:search-path:
*
* The search path for this icon theme.
*
* When looking for icons, GTK will search for a subdirectory of
* one or more of the directories in the search 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.)
*/
props[PROP_SEARCH_PATH] =
g_param_spec_boxed ("search-path",
P_("Search path"),
P_("Search path"),
G_TYPE_STRV,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkIconTheme:resource-path:
*
* Resource paths that will be looked at when looking for icons,
* similar to search paths.
*
* 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.
*/
props[PROP_RESOURCE_PATH] =
g_param_spec_boxed ("resource-path",
P_("Resource path"),
P_("Resource path"),
G_TYPE_STRV,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkIconTheme:theme-name:
*
* The name of the icon theme that is being used.
*
* Unless set to a different value, this will be the value of
* the `GtkSettings:gtk-icon-theme-name` property of the `GtkSettings`
* object associated to the display of the icontheme object.
*/
props[PROP_THEME_NAME] =
g_param_spec_string ("theme-name",
P_("Theme name"),
P_("Theme name"),
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, LAST_PROP, props);
}
/* Callback when the display that the icon theme is attached
* to is closed; unset the display, and if it’s the unique theme
* for the display, drop the reference
*/
static void
display_closed__mainthread_unlocked (GdkDisplay *display,
gboolean is_error,
GtkIconThemeRef *ref)
{
GtkIconTheme *self = gtk_icon_theme_ref_aquire (ref);
gboolean was_display_singleton;
if (self)
{
/* This is only set at construction and accessed here in the main thread, so no locking necessary */
was_display_singleton = self->is_display_singleton;
if (was_display_singleton)
{
g_object_set_data (G_OBJECT (display), I_("gtk-icon-theme"), NULL);
self->is_display_singleton = FALSE;
}
gtk_icon_theme_unset_display (self);
update_current_theme__mainthread (self);
if (was_display_singleton)
g_object_unref (self);
}
gtk_icon_theme_ref_release (ref);
}
static void
update_current_theme__mainthread (GtkIconTheme *self)
{
#define theme_changed(_old, _new) \
((_old && !_new) || (!_old && _new) || \
(_old && _new && strcmp (_old, _new) != 0))
if (!self->custom_theme)
{
char *theme = NULL;
gboolean changed = FALSE;
if (self->display)
{
GtkSettings *settings = gtk_settings_get_for_display (self->display);
g_object_get (settings, "gtk-icon-theme-name", &theme, NULL);
}
if (theme_changed (self->current_theme, theme))
{
g_free (self->current_theme);
self->current_theme = theme;
changed = TRUE;
}
else
g_free (theme);
if (changed)
do_theme_change (self);
}
#undef theme_changed
}
/* Callback when the icon theme GtkSetting changes
*/
static void
theme_changed__mainthread_unlocked (GtkSettings *settings,
GParamSpec *pspec,
GtkIconThemeRef *ref)
{
GtkIconTheme *self = gtk_icon_theme_ref_aquire (ref);
if (self)
{
update_current_theme__mainthread (self);
/* Queue early read of the new theme */
gtk_icon_theme_load_in_thread (self);
}
gtk_icon_theme_ref_release (ref);
}
static void
gtk_icon_theme_unset_display (GtkIconTheme *self)
{
if (self->display)
{
g_signal_handlers_disconnect_by_func (self->display,
(gpointer) display_closed__mainthread_unlocked,
self->ref);
g_signal_handlers_disconnect_by_func (self->display_settings,
(gpointer) theme_changed__mainthread_unlocked,
self->ref);
self->display = NULL;
self->display_settings = NULL;
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_DISPLAY]);
}
}
void
gtk_icon_theme_set_display (GtkIconTheme *self,
GdkDisplay *display)
{
g_return_if_fail (GTK_ICON_THEME (self));
g_return_if_fail (display == NULL || GDK_IS_DISPLAY (display));
gtk_icon_theme_lock (self);
g_object_freeze_notify (G_OBJECT (self));
gtk_icon_theme_unset_display (self);
if (display)
{
self->display = display;
self->display_settings = gtk_settings_get_for_display (display);
g_signal_connect_data (display, "closed",
G_CALLBACK (display_closed__mainthread_unlocked),
gtk_icon_theme_ref_ref (self->ref),
(GClosureNotify)gtk_icon_theme_ref_unref,
0);
g_signal_connect_data (self->display_settings, "notify::gtk-icon-theme-name",
G_CALLBACK (theme_changed__mainthread_unlocked),
gtk_icon_theme_ref_ref (self->ref),
(GClosureNotify)gtk_icon_theme_ref_unref,
0);
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_DISPLAY]);
}
update_current_theme__mainthread (self);
gtk_icon_theme_unlock (self);
g_object_thaw_notify (G_OBJECT (self));
}
/* Checks whether a loader for SVG files has been registered
* with GdkPixbuf.
*/
static gboolean
pixbuf_supports_svg (void)
{
GSList *formats;
GSList *tmp_list;
static int 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)
{
char **mime_types = gdk_pixbuf_format_get_mime_types (tmp_list->data);
char **mime_type;
for (mime_type = mime_types; *mime_type && !found_svg; mime_type++)
{
if (strcmp (*mime_type, "image/svg") == 0)
found_svg = TRUE;
}
g_strfreev (mime_types);
}
g_slist_free (formats);
return found_svg;
}
static void
free_dir_mtime (IconThemeDirMtime *dir_mtime)
{
if (dir_mtime->cache)
gtk_icon_cache_unref (dir_mtime->cache);
g_free (dir_mtime->dir);
}
static void
gtk_icon_theme_init (GtkIconTheme *self)
{
const char * const *xdg_data_dirs;
int i, j;
int len;
self->ref = gtk_icon_theme_ref_new (self);
self->icon_cache = g_hash_table_new_full (icon_key_hash, icon_key_equal, NULL,
(GDestroyNotify)icon_uncached_cb);
self->custom_theme = FALSE;
self->dir_mtimes = g_array_new (FALSE, TRUE, sizeof (IconThemeDirMtime));
g_array_set_clear_func (self->dir_mtimes, (GDestroyNotify)free_dir_mtime);
xdg_data_dirs = g_get_system_data_dirs ();
for (i = 0; xdg_data_dirs[i]; i++) ;
len = 2 * i + 3;
self->search_path = g_new (char *, len);
i = 0;
self->search_path[i++] = g_build_filename (g_get_user_data_dir (), "icons", NULL);
self->search_path[i++] = g_build_filename (g_get_home_dir (), ".icons", NULL);
for (j = 0; xdg_data_dirs[j]; j++)
self->search_path[i++] = g_build_filename (xdg_data_dirs[j], "icons", NULL);
for (j = 0; xdg_data_dirs[j]; j++)
self->search_path[i++] = g_build_filename (xdg_data_dirs[j], "pixmaps", NULL);
self->search_path[i] = NULL;
self->resource_path = g_new (char *, 2);
self->resource_path[0] = g_strdup ("/org/gtk/libgtk/icons/");
self->resource_path[1] = NULL;
self->themes_valid = FALSE;
self->themes = NULL;
self->unthemed_icons = NULL;
self->pixbuf_supports_svg = pixbuf_supports_svg ();
}
static gboolean
theme_changed_idle__mainthread_unlocked (gpointer user_data)
{
GtkIconThemeRef *ref = (GtkIconThemeRef *)user_data;
GtkIconTheme *self;
GdkDisplay *display = NULL;
self = gtk_icon_theme_ref_aquire (ref);
if (self)
{
g_object_ref (self); /* Ensure theme lives during the changed signal emissions */
self->theme_changed_idle = 0;
if (self->display && self->is_display_singleton)
display = g_object_ref (self->display);
}
gtk_icon_theme_ref_release (ref);
if (self)
{
/* Emit signals outside locks. */
g_signal_emit (self, signal_changed, 0);
if (display)
{
GtkSettings *settings = gtk_settings_get_for_display (self->display);
gtk_style_provider_changed (GTK_STYLE_PROVIDER (settings));
gtk_system_setting_changed (display, GTK_SYSTEM_SETTING_ICON_THEME);
g_object_unref (display);
}
g_object_unref (self);
}
return FALSE;
}
static void
queue_theme_changed (GtkIconTheme *self)
{
if (!self->theme_changed_idle)
{
self->theme_changed_idle = g_idle_add_full (GTK_PRIORITY_RESIZE - 2,
theme_changed_idle__mainthread_unlocked,
gtk_icon_theme_ref_ref (self->ref),
(GDestroyNotify)gtk_icon_theme_ref_unref);
gdk_source_set_static_name_by_id (self->theme_changed_idle, "[gtk] theme_changed_idle");
}
}
static void
do_theme_change (GtkIconTheme *self)
{
icon_cache_clear (self);
if (!self->themes_valid)
return;
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("change to icon theme \"%s\"", self->current_theme));
blow_themes (self);
queue_theme_changed (self);
}
static void
blow_themes (GtkIconTheme *self)
{
if (self->themes_valid)
{
g_list_free_full (self->themes, (GDestroyNotify) theme_destroy);
g_array_set_size (self->dir_mtimes, 0);
g_hash_table_destroy (self->unthemed_icons);
}
self->themes = NULL;
self->unthemed_icons = NULL;
self->themes_valid = FALSE;
self->serial++;
}
int
gtk_icon_theme_get_serial (GtkIconTheme *self)
{
return self->serial;
}
static void
gtk_icon_theme_dispose (GObject *object)
{
GtkIconTheme *self = GTK_ICON_THEME (object);
/* We make sure all outstanding GtkIconThemeRefs to us are NULLed
* out so that no other threads than the one running finalize will
* refer to the icon theme after this. This could happen if
* we finalize on a thread and on the main thread some display or
* setting signal is emitted.
*
* It is possible that before we acquire the lock this happens
* and the other thread refs the icon theme for some reason, but
* this is ok as it is allowed to resurrect objects in dispose
* (but not in finalize).
*/
gtk_icon_theme_ref_dispose (self->ref);
G_OBJECT_CLASS (gtk_icon_theme_parent_class)->dispose (object);
}
static void
gtk_icon_theme_finalize (GObject *object)
{
GtkIconTheme *self = GTK_ICON_THEME (object);
/* We don't actually need to take the lock here, because by now
there can be no other threads that own a ref to this object, but
technically this is considered "locked" */
icon_cache_clear (self);
if (self->theme_changed_idle)
g_source_remove (self->theme_changed_idle);
gtk_icon_theme_unset_display (self);
g_free (self->current_theme);
g_strfreev (self->search_path);
g_strfreev (self->resource_path);
blow_themes (self);
g_array_free (self->dir_mtimes, TRUE);
gtk_icon_theme_ref_unref (self->ref);
G_OBJECT_CLASS (gtk_icon_theme_parent_class)->finalize (object);
}
/**
* gtk_icon_theme_set_search_path:
* @self: a `GtkIconTheme`
* @path: (array zero-terminated=1) (element-type filename) (nullable): NULL-terminated
* array of directories that are searched for icon themes
*
* Sets the search path for the icon theme object.
*
* When looking for an icon theme, GTK will search for a subdirectory
* of one or more of the directories in @path with the same name
* as the icon theme containing an index.theme file. (Themes from
* multiple of the path elements are combined to allow themes to be
* extended by adding icons in the user’s home directory.)
*
* In addition if an icon found isn’t found either in the current
* icon theme or the default icon theme, and an image file with
* the right name is found directly in one of the elements of
* @path, then that image will be used for the icon name.
* (This is legacy feature, and new icons should be put
* into the fallback icon theme, which is called hicolor,
* rather than directly on the icon path.)
*/
void
gtk_icon_theme_set_search_path (GtkIconTheme *self,
const char * const *path)
{
char **search_path;
g_return_if_fail (GTK_IS_ICON_THEME (self));
gtk_icon_theme_lock (self);
search_path = g_strdupv ((char **)path);
g_strfreev (self->search_path);
self->search_path = search_path;
do_theme_change (self);
gtk_icon_theme_unlock (self);
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_SEARCH_PATH]);
}
/**
* gtk_icon_theme_get_search_path:
* @self: a `GtkIconTheme`
*
* Gets the current search path.
*
* See [method@Gtk.IconTheme.set_search_path].
*
* Returns: (transfer full) (array zero-terminated=1) (element-type filename) (nullable):
* a list of icon theme path directories
*/
char **
gtk_icon_theme_get_search_path (GtkIconTheme *self)
{
char **paths;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
gtk_icon_theme_lock (self);
paths = g_strdupv (self->search_path);
gtk_icon_theme_unlock (self);
return paths;
}
/**
* gtk_icon_theme_add_search_path:
* @self: a `GtkIconTheme`
* @path: (type filename): directory name to append to the icon path
*
* Appends a directory to the search path.
*
* See [method@Gtk.IconTheme.set_search_path].
*/
void
gtk_icon_theme_add_search_path (GtkIconTheme *self,
const char *path)
{
char **paths;
int len;
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (path != NULL);
len = g_strv_length (self->search_path);
paths = g_new (char *, len + 2);
memcpy (paths, self->search_path, sizeof (char *) * len);
paths[len] = (char *)path;
paths[len + 1] = NULL;
gtk_icon_theme_set_search_path (self, (const char * const *)paths);
g_free (paths);
}
/**
* gtk_icon_theme_set_resource_path:
* @self: a `GtkIconTheme`
* @path: (array zero-terminated=1) (element-type utf8) (nullable):
* NULL-terminated array of resource paths
* that are searched for icons
*
* Sets the resource paths that will be looked at when
* looking for icons, similar to search paths.
*
* 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`
* or `@path/scalable/actions/run.svg`.
*
* Icons that are directly placed in the resource path instead
* of a subdirectory are also considered as ultimate fallback,
* but they are treated like unthemed icons.
*/
void
gtk_icon_theme_set_resource_path (GtkIconTheme *self,
const char * const *path)
{
char **search_path;
g_return_if_fail (GTK_IS_ICON_THEME (self));
gtk_icon_theme_lock (self);
search_path = g_strdupv ((char **)path);
g_strfreev (self->resource_path);
self->resource_path = search_path;
do_theme_change (self);
gtk_icon_theme_unlock (self);
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_RESOURCE_PATH]);
}
/**
* gtk_icon_theme_get_resource_path:
* @self: a `GtkIconTheme`
*
* Gets the current resource path.
*
* See [method@Gtk.IconTheme.set_resource_path].
*
* Returns: (transfer full) (array zero-terminated=1) (element-type utf8) (nullable):
* A list of resource paths
*/
char **
gtk_icon_theme_get_resource_path (GtkIconTheme *self)
{
char **paths;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
gtk_icon_theme_lock (self);
paths = g_strdupv (self->resource_path);
gtk_icon_theme_unlock (self);
return paths;
}
/**
* gtk_icon_theme_add_resource_path:
* @self: a `GtkIconTheme`
* @path: a resource path
*
* Adds a resource path that will be looked at when looking
* for icons, similar to search paths.
*
* See [method@Gtk.IconTheme.set_resource_path].
*
* This function should be used to make application-specific icons
* available as part of the icon theme.
*/
void
gtk_icon_theme_add_resource_path (GtkIconTheme *self,
const char *path)
{
char **paths;
int len;
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (path != NULL);
len = g_strv_length (self->resource_path);
paths = g_new (char *, len + 2);
memcpy (paths, self->resource_path, sizeof (char *) * len);
paths[len] = (char *)path;
paths[len + 1] = NULL;
gtk_icon_theme_set_resource_path (self, (const char * const *)paths);
g_free (paths);
}
/**
* gtk_icon_theme_set_theme_name:
* @self: a `GtkIconTheme`
* @theme_name: (nullable): 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 [func@Gtk.IconTheme.get_for_display].
*/
void
gtk_icon_theme_set_theme_name (GtkIconTheme *self,
const char *theme_name)
{
g_return_if_fail (GTK_IS_ICON_THEME (self));
g_return_if_fail (!self->is_display_singleton);
gtk_icon_theme_lock (self);
if (theme_name != NULL)
{
self->custom_theme = TRUE;
if (!self->current_theme || strcmp (theme_name, self->current_theme) != 0)
{
g_free (self->current_theme);
self->current_theme = g_strdup (theme_name);
do_theme_change (self);
}
}
else
{
if (self->custom_theme)
{
self->custom_theme = FALSE;
update_current_theme__mainthread (self);
}
}
gtk_icon_theme_unlock (self);
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_THEME_NAME]);
}
/**
* gtk_icon_theme_get_theme_name:
* @self: a `GtkIconTheme`
*
* Gets the current icon theme name.
*
* Returns (transfer full): the current icon theme name,
*/
char *
gtk_icon_theme_get_theme_name (GtkIconTheme *self)
{
char *theme_name;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
gtk_icon_theme_lock (self);
if (self->custom_theme)
theme_name = g_strdup (self->current_theme);
else
{
if (self->display)
{
GtkSettings *settings = gtk_settings_get_for_display (self->display);
g_object_get (settings, "gtk-icon-theme-name", &theme_name, NULL);
}
else
theme_name = NULL;
}
gtk_icon_theme_unlock (self);
return theme_name;
}
static const char builtin_hicolor_index[] =
"[Icon Theme]\n"
"Name=Hicolor\n"
"Hidden=True\n"
"Directories=16x16/actions,16x16/status,22x22/actions,24x24/actions,24x24/status,32x32/actions,32x32/status,48x48/status,64x64/actions\n"
"[16x16/actions]\n"
"Size=16\n"
"Type=Threshold\n"
"[16x16/status]\n"
"Size=16\n"
"Type=Threshold\n"
"[22x22/actions]\n"
"Size=22\n"
"Type=Threshold\n"
"[24x24/actions]\n"
"Size=24\n"
"Type=Threshold\n"
"[24x24/status]\n"
"Size=24\n"
"Type=Threshold\n"
"[32x32/actions]\n"
"Size=32\n"
"Type=Threshold\n"
"[32x32/status]\n"
"Size=32\n"
"Type=Threshold\n"
"[48x48/status]\n"
"Size=48\n"
"Type=Threshold\n"
"[64x64/actions]\n"
"Size=64\n"
"Type=Threshold\n";
static void
insert_theme (GtkIconTheme *self,
const char *theme_name)
{
int i;
GList *l;
char **dirs;
char **scaled_dirs;
char **themes;
IconTheme *theme = NULL;
char *path;
GKeyFile *theme_file;
GError *error = NULL;
GStatBuf stat_buf;
for (l = self->themes; l != NULL; l = l->next)
{
theme = l->data;
if (strcmp (theme->name, theme_name) == 0)
return;
}
for (i = 0; self->search_path[i]; i++)
{
IconThemeDirMtime dir_mtime;
path = g_build_filename (self->search_path[i], theme_name, NULL);
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;
}
g_array_insert_val (self->dir_mtimes, 0, dir_mtime);
}
theme_file = NULL;
for (i = 0; self->search_path[i] && !theme_file; i++)
{
path = g_build_filename (self->search_path[i], theme_name, "index.theme", NULL);
if (g_file_test (path, G_FILE_TEST_IS_REGULAR))
{
theme_file = g_key_file_new ();
g_key_file_set_list_separator (theme_file, ',');
if (!g_key_file_load_from_file (theme_file, path, 0, &error))
{
g_key_file_free (theme_file);
theme_file = NULL;
g_error_free (error);
error = NULL;
}
}
g_free (path);
}
if (theme_file == NULL)
{
if (strcmp (theme_name, FALLBACK_ICON_THEME) == 0)
{
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);
}
else
return;
}
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);
g_key_file_free (theme_file);
return;
}
scaled_dirs = g_key_file_get_string_list (theme_file, "Icon Theme", "ScaledDirectories", NULL, NULL);
theme = theme_new (theme_name, theme_file);
self->themes = g_list_prepend (self->themes, theme);
for (i = 0; dirs[i] != NULL; i++)
theme_subdir_load (self, theme, theme_file, dirs[i]);
if (scaled_dirs)
{
for (i = 0; scaled_dirs[i] != NULL; i++)
theme_subdir_load (self, theme, theme_file, scaled_dirs[i]);
}
g_strfreev (dirs);
g_strfreev (scaled_dirs);
themes = g_key_file_get_string_list (theme_file,
"Icon Theme",
"Inherits",
NULL,
NULL);
if (themes)
{
for (i = 0; themes[i] != NULL; i++)
insert_theme (self, themes[i]);
g_strfreev (themes);
}
g_key_file_free (theme_file);
}
static void
free_unthemed_icon (UnthemedIcon *unthemed_icon)
{
g_free (unthemed_icon->svg_filename);
g_free (unthemed_icon->no_svg_filename);
g_slice_free (UnthemedIcon, unthemed_icon);
}
static void
strip_suffix_inline (char *filename)
{
char *dot;
if (g_str_has_suffix (filename, ".symbolic.png"))
filename[strlen(filename)-13] = 0;
dot = strrchr (filename, '.');
if (dot != NULL)
*dot = 0;
}
static char *
strip_suffix (const char *filename)
{
const char *dot;
if (g_str_has_suffix (filename, ".symbolic.png"))
return g_strndup (filename, strlen(filename)-13);
dot = strrchr (filename, '.');
if (dot == NULL)
return g_strdup (filename);
return g_strndup (filename, dot - filename);
}
static void
add_unthemed_icon (GtkIconTheme *self,
const char *dir,
const char *file,
gboolean is_resource)
{
IconCacheFlag new_suffix, old_suffix;
char *abs_file;
char *base_name;
UnthemedIcon *unthemed_icon;
new_suffix = suffix_from_name (file);
if (new_suffix == ICON_CACHE_FLAG_NONE)
return;
abs_file = g_build_filename (dir, file, NULL);
base_name = strip_suffix (file);
unthemed_icon = g_hash_table_lookup (self->unthemed_icons, base_name);
if (unthemed_icon)
{
if (new_suffix == ICON_CACHE_FLAG_SVG_SUFFIX)
{
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_CACHE_FLAG_SVG_SUFFIX)
unthemed_icon->svg_filename = abs_file;
else
unthemed_icon->no_svg_filename = abs_file;
/* takes ownership of base_name */
g_hash_table_replace (self->unthemed_icons, base_name, unthemed_icon);
}
}
static void
load_themes (GtkIconTheme *self)
{
GDir *gdir;
int base;
char *dir;
const char *file;
GStatBuf stat_buf;
int j;
if (self->current_theme)
insert_theme (self, self->current_theme);
insert_theme (self, FALLBACK_ICON_THEME);
self->themes = g_list_reverse (self->themes);
self->unthemed_icons = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, (GDestroyNotify)free_unthemed_icon);
for (base = 0; self->search_path[base]; base++)
{
IconThemeDirMtime *dir_mtime;
dir = self->search_path[base];
g_array_set_size (self->dir_mtimes, self->dir_mtimes->len + 1);
dir_mtime = &g_array_index (self->dir_mtimes, IconThemeDirMtime, self->dir_mtimes->len - 1);
dir_mtime->dir = g_strdup (dir);
dir_mtime->mtime = 0;
dir_mtime->exists = FALSE;
dir_mtime->cache = NULL;
if (g_stat (dir, &stat_buf) != 0 || !S_ISDIR (stat_buf.st_mode))
continue;
dir_mtime->mtime = stat_buf.st_mtime;
dir_mtime->exists = TRUE;
dir_mtime->cache = gtk_icon_cache_new_for_path (dir);
if (dir_mtime->cache != NULL)
continue;
gdir = g_dir_open (dir, 0, NULL);
if (gdir == NULL)
continue;
while ((file = g_dir_read_name (gdir)))
add_unthemed_icon (self, dir, file, FALSE);
g_dir_close (gdir);
}
for (j = 0; self->resource_path[j]; j++)
{
char **children;
int i;
dir = self->resource_path[j];
children = g_resources_enumerate_children (dir, 0, NULL);
if (!children)
continue;
for (i = 0; children[i]; i++)
add_unthemed_icon (self, dir, children[i], TRUE);
g_strfreev (children);
}
self->themes_valid = TRUE;
self->last_stat_time = g_get_monotonic_time ();
GTK_DISPLAY_NOTE (self->display, ICONTHEME, {
GList *l;
GString *s;
s = g_string_new ("Current icon themes ");
for (l = self->themes; l; l = l->next)
{
IconTheme *theme = l->data;
g_string_append (s, theme->name);
g_string_append_c (s, ' ');
}
g_message ("%s", s->str);
g_string_free (s, TRUE);
});
}
static gboolean
ensure_valid_themes (GtkIconTheme *self,
gboolean non_blocking)
{
gboolean was_valid = self->themes_valid;
if (self->themes_valid)
{
gint64 now = g_get_monotonic_time ();
if ((now - self->last_stat_time) / G_USEC_PER_SEC > 5)
{
if (non_blocking)
return FALSE;
if (rescan_themes (self))
{
icon_cache_clear (self);
blow_themes (self);
}
}
}
if (!self->themes_valid)
{
gint64 before G_GNUC_UNUSED;
if (non_blocking)
return FALSE;
before = GDK_PROFILER_CURRENT_TIME;
load_themes (self);
gdk_profiler_end_mark (before, "icon theme load", self->current_theme);
if (was_valid)
queue_theme_changed (self);
}
return TRUE;
}
static inline gboolean
icon_name_is_symbolic (const char *icon_name,
int icon_name_len)
{
if (icon_name_len < 0)
icon_name_len = strlen (icon_name);
if (icon_name_len > strlen ("-symbolic"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic"), "-symbolic") == 0)
return TRUE;
}
if (icon_name_len > strlen ("-symbolic-ltr"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic-ltr"), "-symbolic-ltr") == 0 ||
strcmp (icon_name + icon_name_len - strlen ("-symbolic-rtl"), "-symbolic-rtl") == 0)
return TRUE;
}
return FALSE;
}
static inline gboolean
icon_uri_is_symbolic (const char *icon_name,
int icon_name_len)
{
if (icon_name_len < 0)
icon_name_len = strlen (icon_name);
if (icon_name_len > strlen ("-symbolic.svg"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic.svg"), "-symbolic.svg") == 0 ||
strcmp (icon_name + icon_name_len - strlen (".symbolic.png"), ".symbolic.png") == 0)
return TRUE;
}
if (icon_name_len > strlen ("-symbolic-ltr.svg"))
{
if (strcmp (icon_name + icon_name_len - strlen ("-symbolic.ltr.svg"), "-symbolic-ltr.svg") == 0 ||
strcmp (icon_name + icon_name_len - strlen ("-symbolic.rtl.svg"), "-symbolic-rtl.svg") == 0)
return TRUE;
}
return FALSE;
}
static GtkIconPaintable *
real_choose_icon (GtkIconTheme *self,
const char *icon_names[],
int size,
int scale,
GtkIconLookupFlags flags,
gboolean non_blocking)
{
GList *l;
GtkIconPaintable *icon = NULL;
UnthemedIcon *unthemed_icon = NULL;
const char *icon_name = NULL;
IconTheme *theme = NULL;
int i;
IconKey key;
if (!ensure_valid_themes (self, non_blocking))
return NULL;
key.icon_names = (char **)icon_names;
key.size = size;
key.scale = scale;
key.flags = flags;
/* This is used in the icontheme unit test */
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
for (i = 0; icon_names[i]; i++)
g_message ("\tlookup name: %s", icon_names[i]));
icon = icon_cache_lookup (self, &key);
if (icon)
return icon;
/* For symbolic icons, do a search in all registered themes first;
* a theme that inherits them from a parent theme might provide
* an alternative full-color version, but still expect the symbolic icon
* to show up instead.
*
* In other words: We prefer symbolic icons in inherited themes over
* generic icons in the theme.
*/
for (l = self->themes; l; l = l->next)
{
theme = l->data;
for (i = 0; icon_names[i] && icon_name_is_symbolic (icon_names[i], -1); i++)
{
icon_name = icon_names[i];
icon = theme_lookup_icon (theme, icon_name, size, scale, self->pixbuf_supports_svg);
if (icon)
goto out;
}
}
for (l = self->themes; l; l = l->next)
{
theme = l->data;
for (i = 0; icon_names[i]; i++)
{
icon_name = icon_names[i];
icon = theme_lookup_icon (theme, icon_name, size, scale, self->pixbuf_supports_svg);
if (icon)
goto out;
}
}
theme = NULL;
for (i = 0; icon_names[i]; i++)
{
unthemed_icon = g_hash_table_lookup (self->unthemed_icons, icon_names[i]);
if (unthemed_icon)
{
icon = icon_paintable_new (icon_names[i], size, scale);
/* A SVG icon, when allowed, beats out a XPM icon, but not a PNG icon */
if (self->pixbuf_supports_svg &&
unthemed_icon->svg_filename &&
(!unthemed_icon->no_svg_filename ||
suffix_from_name (unthemed_icon->no_svg_filename) < ICON_CACHE_FLAG_PNG_SUFFIX))
icon->filename = g_strdup (unthemed_icon->svg_filename);
else if (unthemed_icon->no_svg_filename)
icon->filename = g_strdup (unthemed_icon->no_svg_filename);
else
{
g_clear_object (&icon);
}
if (icon)
{
icon->is_svg = suffix_from_name (icon->filename) == ICON_CACHE_FLAG_SVG_SUFFIX;
icon->is_resource = unthemed_icon->is_resource;
goto out;
}
}
}
#ifdef G_OS_WIN32
/* Still not found an icon, check if reference to a Win32 resource */
{
char **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 = icon_paintable_new (resources[0], size, scale);
icon->win32_icon = gdk_win32_icon_to_pixbuf_libgtk_only (hIcon, NULL, NULL);
DestroyIcon (hIcon);
goto out;
}
g_strfreev (resources);
}
#endif
/* Fall back to missing icon */
if (icon == NULL)
{
GTK_NOTE(ICONFALLBACK, {
char *s = g_strjoinv (", ", (char **)icon_names);
g_message ("No icon found in %s (or fallbacks) for: %s", self->current_theme, s);
g_free (s);
});
icon = icon_paintable_new ("image-missing", size, scale);
icon->filename = g_strdup (IMAGE_MISSING_RESOURCE_PATH);
icon->is_resource = TRUE;
}
out:
g_assert (icon != NULL);
icon->key.icon_names = g_strdupv ((char **)icon_names);
icon->key.size = size;
icon->key.scale = scale;
icon->key.flags = flags;
icon_cache_add (self, icon);
return icon;
}
static void
icon_name_list_add_icon (GtkStrvBuilder *icons,
const char *dir_suffix,
char *icon_name)
{
if (dir_suffix)
gtk_strv_builder_append (icons, g_strconcat (icon_name, dir_suffix, NULL));
gtk_strv_builder_append (icons, icon_name);
}
static GtkIconPaintable *
choose_icon (GtkIconTheme *self,
const char *icon_names[],
int size,
int scale,
GtkTextDirection direction,
GtkIconLookupFlags flags,
gboolean non_blocking)
{
gboolean has_regular = FALSE, has_symbolic = FALSE;
GtkIconPaintable *icon;
GtkStrvBuilder new_names;
const char *dir_suffix;
guint i;
switch (direction)
{
case GTK_TEXT_DIR_NONE:
dir_suffix = NULL;
break;
case GTK_TEXT_DIR_LTR:
dir_suffix = "-ltr";
break;
case GTK_TEXT_DIR_RTL:
dir_suffix = "-rtl";
break;
default:
g_assert_not_reached();
dir_suffix = NULL;
break;
}
for (i = 0; icon_names[i]; i++)
{
if (icon_name_is_symbolic (icon_names[i], -1))
has_symbolic = TRUE;
else
has_regular = TRUE;
}
if ((flags & GTK_ICON_LOOKUP_FORCE_REGULAR) && has_symbolic)
{
gtk_strv_builder_init (&new_names);
for (i = 0; icon_names[i]; i++)
{
if (icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (&new_names, dir_suffix, g_strndup (icon_names[i], strlen (icon_names[i]) - strlen ("-symbolic")));
else
icon_name_list_add_icon (&new_names, dir_suffix, g_strdup (icon_names[i]));
}
for (i = 0; icon_names[i]; i++)
{
if (icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (&new_names, dir_suffix, g_strdup (icon_names[i]));
}
icon = real_choose_icon (self,
(const char **) gtk_strv_builder_get_data (&new_names),
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC),
non_blocking);
gtk_strv_builder_clear (&new_names);
}
else if ((flags & GTK_ICON_LOOKUP_FORCE_SYMBOLIC) && has_regular)
{
gtk_strv_builder_init (&new_names);
for (i = 0; icon_names[i]; i++)
{
if (!icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (&new_names, dir_suffix, g_strconcat (icon_names[i], "-symbolic", NULL));
else
icon_name_list_add_icon (&new_names, dir_suffix, g_strdup (icon_names[i]));
}
for (i = 0; icon_names[i]; i++)
{
if (!icon_name_is_symbolic (icon_names[i], -1))
icon_name_list_add_icon (&new_names, dir_suffix, g_strdup (icon_names[i]));
}
icon = real_choose_icon (self,
(const char **) gtk_strv_builder_get_data (&new_names),
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC),
non_blocking);
gtk_strv_builder_clear (&new_names);
}
else if (dir_suffix)
{
gtk_strv_builder_init (&new_names);
for (i = 0; icon_names[i]; i++)
{
icon_name_list_add_icon (&new_names, dir_suffix, g_strdup (icon_names[i]));
}
icon = real_choose_icon (self,
(const char **) gtk_strv_builder_get_data (&new_names),
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC),
non_blocking);
gtk_strv_builder_clear (&new_names);
}
else
{
icon = real_choose_icon (self,
icon_names,
size,
scale,
flags & ~(GTK_ICON_LOOKUP_FORCE_REGULAR | GTK_ICON_LOOKUP_FORCE_SYMBOLIC),
non_blocking);
}
return icon;
}
static void
load_icon_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GtkIconPaintable *self = GTK_ICON_PAINTABLE (source_object);
g_mutex_lock (&self->texture_lock);
icon_ensure_texture__locked (self, TRUE);
g_mutex_unlock (&self->texture_lock);
g_task_return_pointer (task, NULL, NULL);
}
/**
* gtk_icon_theme_lookup_icon:
* @self: a `GtkIconTheme`
* @icon_name: the name of the icon to lookup
* @fallbacks: (nullable) (array zero-terminated=1):
* @size: desired icon size.
* @scale: the window scale this will be displayed on
* @direction: text direction the icon will be displayed in
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up a named icon for a desired size and window scale,
* returning a `GtkIconPaintable`.
*
* The icon can then be rendered by using it as a `GdkPaintable`,
* or you can get information such as the filename and size.
*
* If the available @icon_name is not available and @fallbacks are
* provided, they will be tried in order.
*
* If no matching icon is found, then a paintable that renders the
* "missing icon" icon is returned. If you need to do something else
* for missing icons you need to use [method@Gtk.IconTheme.has_icon].
*
* Note that you probably want to listen for icon theme changes and
* update the icon. This is usually done by overriding the
* GtkWidgetClass.css-changed() function.
*
* Returns: (transfer full): a `GtkIconPaintable` object
* containing the icon.
*/
GtkIconPaintable *
gtk_icon_theme_lookup_icon (GtkIconTheme *self,
const char *icon_name,
const char *fallbacks[],
int size,
int scale,
GtkTextDirection direction,
GtkIconLookupFlags flags)
{
GtkIconPaintable *icon;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
g_return_val_if_fail (icon_name != NULL, NULL);
g_return_val_if_fail (scale >= 1, NULL);
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("looking up icon %s for scale %d", icon_name, scale));
gtk_icon_theme_lock (self);
if (fallbacks)
{
gsize n_fallbacks = g_strv_length ((char **) fallbacks);
const char **names = g_new (const char *, n_fallbacks + 2);
names[0] = icon_name;
memcpy (&names[1], fallbacks, sizeof (char *) * n_fallbacks);
names[n_fallbacks + 1] = NULL;
icon = choose_icon (self, names, size, scale, direction, flags, FALSE);
g_free (names);
}
else
{
const char *names[2];
names[0] = icon_name;
names[1] = NULL;
icon = choose_icon (self, names, size, scale, direction, flags, FALSE);
}
gtk_icon_theme_unlock (self);
if (flags & GTK_ICON_LOOKUP_PRELOAD)
{
gboolean has_texture = FALSE;
/* If we fail to get the lock it is because some other thread is
currently loading the icon, so we need to do nothing */
if (g_mutex_trylock (&icon->texture_lock))
{
has_texture = icon->texture != NULL;
g_mutex_unlock (&icon->texture_lock);
if (!has_texture)
{
GTask *task = g_task_new (icon, NULL, NULL, NULL);
g_task_run_in_thread (task, load_icon_thread);
g_object_unref (task);
}
}
}
return icon;
}
/* Error quark */
GQuark
gtk_icon_theme_error_quark (void)
{
return g_quark_from_static_string ("gtk-icon-theme-error-quark");
}
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 = style->core->color;
palette = style->core->icon_palette;
*color_out = *gtk_css_color_value_get_rgba (color);
lookup = gtk_css_palette_value_get_color (palette, "success");
if (lookup)
*success_out = *lookup;
else
*success_out = *color_out;
lookup = gtk_css_palette_value_get_color (palette, "warning");
if (lookup)
*warning_out = *lookup;
else
*warning_out = *color_out;
lookup = gtk_css_palette_value_get_color (palette, "error");
if (lookup)
*error_out = *lookup;
else
*error_out = *color_out;
}
/**
* gtk_icon_theme_has_icon:
* @self: a `GtkIconTheme`
* @icon_name: the name of an icon
*
* Checks whether an icon theme includes an icon
* for a particular name.
*
* Returns: %TRUE if @self includes an
* icon for @icon_name.
*/
gboolean
gtk_icon_theme_has_icon (GtkIconTheme *self,
const char *icon_name)
{
GList *l;
gboolean res = FALSE;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), FALSE);
g_return_val_if_fail (icon_name != NULL, FALSE);
gtk_icon_theme_lock (self);
ensure_valid_themes (self, FALSE);
for (l = self->themes; l; l = l->next)
{
if (theme_has_icon (l->data, icon_name))
{
res = TRUE;
goto out;
}
}
out:
gtk_icon_theme_unlock (self);
return res;
}
/**
* gtk_icon_theme_has_gicon:
* @self: a `GtkIconTheme`
* @gicon: a `GIcon`
*
* Checks whether an icon theme includes an icon
* for a particular `GIcon`.
*
* Returns: %TRUE if @self includes an icon for @gicon
*
* Since: 4.2
*/
gboolean
gtk_icon_theme_has_gicon (GtkIconTheme *self,
GIcon *gicon)
{
const char * const *names;
gboolean res = FALSE;
if (!G_IS_THEMED_ICON (gicon))
return TRUE;
names = g_themed_icon_get_names (G_THEMED_ICON (gicon));
gtk_icon_theme_lock (self);
ensure_valid_themes (self, FALSE);
for (int i = 0; names[i]; i++)
{
for (GList *l = self->themes; l; l = l->next)
{
if (theme_has_icon (l->data, names[i]))
{
res = TRUE;
goto out;
}
}
}
out:
gtk_icon_theme_unlock (self);
return res;
}
static void
add_size (gpointer key,
gpointer value,
gpointer user_data)
{
int **res_p = user_data;
**res_p = GPOINTER_TO_INT (key);
(*res_p)++;
}
/**
* gtk_icon_theme_get_icon_sizes:
* @self: a `GtkIconTheme`
* @icon_name: the name of an icon
*
* Returns an array of integers describing the sizes at which
* the icon is available without scaling.
*
* A size of -1 means that the icon is available in a scalable
* format. The array is zero-terminated.
*
* Returns: (array zero-terminated=1) (transfer full): A newly
* allocated array describing the sizes at which the icon is
* available. The array should be freed with g_free() when it is no
* longer needed.
*/
int *
gtk_icon_theme_get_icon_sizes (GtkIconTheme *self,
const char *icon_name)
{
GList *l;
int i;
GHashTable *sizes;
int *result, *r;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
gtk_icon_theme_lock (self);
ensure_valid_themes (self, FALSE);
sizes = g_hash_table_new (g_direct_hash, g_direct_equal);
for (l = self->themes; l; l = l->next)
{
IconTheme *theme = l->data;
const char *interned_icon_name = gtk_string_set_lookup (&theme->icons, icon_name);
for (i = 0; i < theme->dir_sizes->len; i++)
{
IconThemeDirSize *dir_size = &g_array_index (theme->dir_sizes, IconThemeDirSize, i);
if (dir_size->type != ICON_THEME_DIR_SCALABLE && g_hash_table_lookup_extended (sizes, GINT_TO_POINTER (dir_size->size), NULL, NULL))
continue;
if (!g_hash_table_contains (dir_size->icon_hash, interned_icon_name))
continue;
if (dir_size->type == ICON_THEME_DIR_SCALABLE)
g_hash_table_insert (sizes, GINT_TO_POINTER (-1), NULL);
else
g_hash_table_insert (sizes, GINT_TO_POINTER (dir_size->size), NULL);
}
}
r = result = g_new0 (int, g_hash_table_size (sizes) + 1);
g_hash_table_foreach (sizes, add_size, &r);
g_hash_table_destroy (sizes);
gtk_icon_theme_unlock (self);
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, key);
}
/**
* gtk_icon_theme_get_icon_names:
* @self: a `GtkIconTheme`
*
* Lists the names of icons in the current icon theme.
*
* Returns: (element-type utf8) (transfer full): a string array
* holding the names of all the icons in the theme. You must
* free the array using g_strfreev().
*/
char **
gtk_icon_theme_get_icon_names (GtkIconTheme *self)
{
GHashTable *icons;
GHashTableIter iter;
char **names;
char *key;
int i;
GList *l;
gtk_icon_theme_lock (self);
ensure_valid_themes (self, FALSE);
icons = g_hash_table_new (g_str_hash, g_str_equal);
l = self->themes;
while (l != NULL)
{
IconTheme *theme = l->data;
gtk_string_set_list (&theme->icons, icons);
l = l->next;
}
g_hash_table_foreach (self->unthemed_icons,
add_key_to_hash,
icons);
names = g_new (char *, g_hash_table_size (icons) + 1);
i = 0;
g_hash_table_iter_init (&iter, icons);
while (g_hash_table_iter_next (&iter, (gpointer *)&key, NULL))
names[i++] = g_strdup (key);
names[i] = NULL;
g_hash_table_destroy (icons);
gtk_icon_theme_unlock (self);
return names;
}
static gboolean
rescan_themes (GtkIconTheme *self)
{
int stat_res;
GStatBuf stat_buf;
guint i;
for (i = 0; i < self->dir_mtimes->len; i++)
{
const IconThemeDirMtime *dir_mtime = &g_array_index (self->dir_mtimes, IconThemeDirMtime, i);
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;
}
self->last_stat_time = g_get_monotonic_time ();
return FALSE;
}
static IconTheme *
theme_new (const char *theme_name,
GKeyFile *theme_file)
{
IconTheme *theme;
theme = g_new0 (IconTheme, 1);
theme->name = g_strdup (theme_name);
theme->dir_sizes = g_array_new (FALSE, FALSE, sizeof (IconThemeDirSize));
theme->dirs = g_array_new (FALSE, FALSE, sizeof (IconThemeDir));
gtk_string_set_init (&theme->icons);
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);
theme->comment =
g_key_file_get_locale_string (theme_file,
"Icon Theme", "Comment",
NULL, NULL);
return theme;
}
static void
theme_destroy (IconTheme *theme)
{
gsize i;
g_free (theme->name);
g_free (theme->display_name);
g_free (theme->comment);
for (i = 0; i < theme->dir_sizes->len; i++)
theme_dir_size_destroy (&g_array_index (theme->dir_sizes, IconThemeDirSize, i));
g_array_free (theme->dir_sizes, TRUE);
for (i = 0; i < theme->dirs->len; i++)
theme_dir_destroy (&g_array_index (theme->dirs, IconThemeDir, i));
g_array_free (theme->dirs, TRUE);
gtk_string_set_destroy (&theme->icons);
g_free (theme);
}
static void
theme_dir_size_destroy (IconThemeDirSize *dir)
{
if (dir->icon_hash)
g_hash_table_destroy (dir->icon_hash);
if (dir->icon_files)
g_array_free (dir->icon_files, TRUE);
}
static void
theme_dir_destroy (IconThemeDir *dir)
{
g_free (dir->path);
}
static int
theme_dir_size_difference (IconThemeDirSize *dir_size,
int size,
int scale)
{
int scaled_size, scaled_dir_size;
int min, max;
scaled_size = size * scale;
scaled_dir_size = dir_size->size * dir_size->scale;
switch (dir_size->type)
{
case ICON_THEME_DIR_FIXED:
return abs (scaled_size - scaled_dir_size);
case ICON_THEME_DIR_SCALABLE:
if (scaled_size < (dir_size->min_size * dir_size->scale))
return (dir_size->min_size * dir_size->scale) - scaled_size;
if (size > (dir_size->max_size * dir_size->scale))
return scaled_size - (dir_size->max_size * dir_size->scale);
return 0;
case ICON_THEME_DIR_THRESHOLD:
min = (dir_size->size - dir_size->threshold) * dir_size->scale;
max = (dir_size->size + dir_size->threshold) * dir_size->scale;
if (scaled_size < min)
return min - scaled_size;
if (scaled_size > max)
return scaled_size - max;
return 0;
case ICON_THEME_DIR_UNTHEMED:
default:
g_assert_not_reached ();
return 1000;
}
}
static const char *
string_from_suffix (IconCacheFlag suffix)
{
switch (suffix)
{
case ICON_CACHE_FLAG_XPM_SUFFIX:
return ".xpm";
case ICON_CACHE_FLAG_SVG_SUFFIX:
return ".svg";
case ICON_CACHE_FLAG_PNG_SUFFIX:
return ".png";
case ICON_CACHE_FLAG_SYMBOLIC_PNG_SUFFIX:
return ".symbolic.png";
case ICON_CACHE_FLAG_NONE:
case ICON_CACHE_FLAG_HAS_ICON_FILE:
default:
g_assert_not_reached();
return NULL;
}
}
static inline IconCacheFlag
suffix_from_name (const char *name)
{
const gsize name_len = strlen (name);
if (name_len > 4)
{
if (name_len > strlen (".symbolic.png"))
{
if (strcmp (name + name_len - strlen (".symbolic.png"), ".symbolic.png") == 0)
return ICON_CACHE_FLAG_SYMBOLIC_PNG_SUFFIX;
}
if (strcmp (name + name_len - strlen (".png"), ".png") == 0)
return ICON_CACHE_FLAG_PNG_SUFFIX;
if (strcmp (name + name_len - strlen (".svg"), ".svg") == 0)
return ICON_CACHE_FLAG_SVG_SUFFIX;
if (strcmp (name + name_len - strlen (".xpm"), ".xpm") == 0)
return ICON_CACHE_FLAG_XPM_SUFFIX;
}
return ICON_CACHE_FLAG_NONE;
}
static IconCacheFlag
best_suffix (IconCacheFlag suffix,
gboolean allow_svg)
{
if ((suffix & ICON_CACHE_FLAG_SYMBOLIC_PNG_SUFFIX) != 0)
return ICON_CACHE_FLAG_SYMBOLIC_PNG_SUFFIX;
else if ((suffix & ICON_CACHE_FLAG_PNG_SUFFIX) != 0)
return ICON_CACHE_FLAG_PNG_SUFFIX;
else if (allow_svg && ((suffix & ICON_CACHE_FLAG_SVG_SUFFIX) != 0))
return ICON_CACHE_FLAG_SVG_SUFFIX;
else if ((suffix & ICON_CACHE_FLAG_XPM_SUFFIX) != 0)
return ICON_CACHE_FLAG_XPM_SUFFIX;
else
return ICON_CACHE_FLAG_NONE;
}
/* returns TRUE if dir_a is a better match */
static gboolean
compare_dir_size_matches (IconThemeDirSize *dir_a, int difference_a,
IconThemeDirSize *dir_b, int difference_b,
int requested_size,
int requested_scale)
{
int diff_a;
int 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 GtkIconPaintable *
theme_lookup_icon (IconTheme *theme,
const char *icon_name, /* interned */
int size,
int scale,
gboolean allow_svg)
{
IconThemeDirSize *min_dir_size;
IconThemeFile *min_file;
int min_difference;
IconCacheFlag min_suffix;
int i;
/* Its not uncommon with misses, so we do an early check which allows us do
* do a lot less work.
* We also intern the name so later hash lookups are faster. */
icon_name = gtk_string_set_lookup (&theme->icons, icon_name);
if (icon_name == NULL)
return FALSE;
min_difference = G_MAXINT;
min_dir_size = NULL;
for (i = 0; i < theme->dir_sizes->len; i++)
{
IconThemeDirSize *dir_size = &g_array_index (theme->dir_sizes, IconThemeDirSize, i);
IconThemeFile *file;
guint best_suffix;
int difference;
gpointer file_index;
if (!g_hash_table_lookup_extended (dir_size->icon_hash, icon_name, NULL, &file_index))
continue;
file = &g_array_index (dir_size->icon_files, IconThemeFile, GPOINTER_TO_INT(file_index));
if (allow_svg)
best_suffix = file->best_suffix;
else
best_suffix = file->best_suffix_no_svg;
if (best_suffix == ICON_CACHE_FLAG_NONE)
continue;
difference = theme_dir_size_difference (dir_size, size, scale);
if (min_dir_size == NULL ||
compare_dir_size_matches (dir_size, difference,
min_dir_size, min_difference,
size, scale))
{
min_dir_size = dir_size;
min_file = file;
min_suffix = best_suffix;
min_difference = difference;
}
}
if (min_dir_size)
{
GtkIconPaintable *icon;
IconThemeDir *dir = &g_array_index (theme->dirs, IconThemeDir, min_file->dir_index);
char *filename;
icon = icon_paintable_new (icon_name, size, scale);
filename = g_strconcat (icon_name, string_from_suffix (min_suffix), NULL);
icon->filename = g_build_filename (dir->path, filename, NULL);
icon->is_svg = min_suffix == ICON_CACHE_FLAG_SVG_SUFFIX;
icon->is_resource = dir->is_resource;
icon->is_symbolic = icon_uri_is_symbolic (filename, -1);
g_free (filename);
return icon;
}
return NULL;
}
static gboolean
theme_has_icon (IconTheme *theme,
const char *icon_name)
{
return gtk_string_set_lookup (&theme->icons, icon_name) != NULL;
}
static GHashTable *
scan_directory (GtkIconTheme *self,
char *full_dir,
GtkStringSet *set)
{
GDir *gdir;
const char *name;
GHashTable *icons = NULL;
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("scanning directory %s", full_dir));
gdir = g_dir_open (full_dir, 0, NULL);
if (gdir == NULL)
return NULL;
while ((name = g_dir_read_name (gdir)))
{
const char *interned;
IconCacheFlag suffix, hash_suffix;
suffix = suffix_from_name (name);
if (suffix == ICON_CACHE_FLAG_NONE)
continue;
strip_suffix_inline ((char *)name);
interned = gtk_string_set_add (set, name);
if (!icons)
icons = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, NULL);
hash_suffix = GPOINTER_TO_INT (g_hash_table_lookup (icons, interned));
/* takes ownership of base_name */
g_hash_table_replace (icons, (char *)interned, GUINT_TO_POINTER (hash_suffix|suffix));
}
g_dir_close (gdir);
return icons;
}
static GHashTable *
scan_resource_directory (GtkIconTheme *self,
const char *full_dir,
GtkStringSet *set)
{
GHashTable *icons = NULL;
char **children;
int i;
GTK_DISPLAY_NOTE (self->display, ICONTHEME,
g_message ("scanning resource directory %s", full_dir));
children = g_resources_enumerate_children (full_dir, 0, NULL);
if (children)
{
for (i = 0; children[i]; i++)
{
char *name = children[i];
const char *interned;
IconCacheFlag suffix, hash_suffix;
suffix = suffix_from_name (name);
if (suffix == ICON_CACHE_FLAG_NONE)
continue;
if (!icons)
icons = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, NULL);
strip_suffix_inline (name);
interned = gtk_string_set_add (set, name);
hash_suffix = GPOINTER_TO_INT (g_hash_table_lookup (icons, interned));
/* takes ownership of base_name */
g_hash_table_replace (icons, (char *)interned, GUINT_TO_POINTER (hash_suffix|suffix));
}
g_strfreev (children);
}
return icons;
}
static gboolean
theme_dir_size_equal (IconThemeDirSize *a,
IconThemeDirSize *b)
{
return
a->type == b->type &&
a->size == b->size &&
a->min_size == b->min_size &&
a->max_size == b->max_size &&
a->threshold == b->threshold &&
a->scale == b->scale;
}
static guint32
theme_ensure_dir_size (IconTheme *theme,
IconThemeDirType type,
int size,
int min_size,
int max_size,
int threshold,
int scale)
{
guint32 index;
IconThemeDirSize new = { 0 };
new.type = type;
new.size = size;
new.min_size = min_size;
new.max_size = max_size;
new.threshold = threshold;
new.scale = scale;
for (index = 0; index < theme->dir_sizes->len; index++)
{
IconThemeDirSize *dir_size = &g_array_index (theme->dir_sizes, IconThemeDirSize, index);
if (theme_dir_size_equal (dir_size, &new))
return index;
}
new.icon_files = g_array_new (FALSE, FALSE, sizeof (IconThemeFile));
/* The keys are interned strings, so use direct hash/equal */
new.icon_hash = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, NULL);
index = theme->dir_sizes->len;
g_array_append_val (theme->dir_sizes, new);
return index;
}
static guint32
theme_add_icon_dir (IconTheme *theme,
gboolean is_resource,
char *path /* takes ownership */)
{
IconThemeDir new_dir = { 0 };
guint32 dir_index;
new_dir.is_resource = is_resource;
new_dir.path = path;
dir_index = theme->dirs->len;
g_array_append_val (theme->dirs, new_dir);
return dir_index;
}
static void
theme_add_icon_file (IconTheme *theme,
const char *icon_name, /* interned */
guint suffixes,
IconThemeDirSize *dir_size,
guint dir_index)
{
IconThemeFile new_file = { 0 };
guint index;
if (g_hash_table_contains (dir_size->icon_hash, icon_name))
return;
new_file.dir_index = dir_index;
new_file.best_suffix = best_suffix (suffixes, TRUE);
new_file.best_suffix_no_svg = best_suffix (suffixes, FALSE);
index = dir_size->icon_files->len;
g_array_append_val (dir_size->icon_files, new_file);
g_hash_table_insert (dir_size->icon_hash, (char *)icon_name, GINT_TO_POINTER(index));
}
/* Icon names are are already interned */
static void
theme_add_dir_with_icons (IconTheme *theme,
IconThemeDirSize *dir_size,
gboolean is_resource,
char *path /* takes ownership */,
GHashTable *icons)
{
GHashTableIter iter;
gpointer key, value;
guint32 dir_index;
dir_index = theme_add_icon_dir (theme, is_resource, path);
g_hash_table_iter_init (&iter, icons);
while (g_hash_table_iter_next (&iter, &key, &value))
{
const char *icon_name = key; /* interned */
guint suffixes = GPOINTER_TO_INT(value);
theme_add_icon_file (theme, icon_name, suffixes, dir_size, dir_index);
}
}
static void
theme_subdir_load (GtkIconTheme *self,
IconTheme *theme,
GKeyFile *theme_file,
char *subdir)
{
char *type_string;
IconThemeDirType type;
int size;
int min_size;
int max_size;
int threshold;
GError *error = NULL;
guint32 dir_size_index;
IconThemeDirSize *dir_size;
int scale;
guint i;
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);
}
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;
dir_size_index = theme_ensure_dir_size (theme, type, size, min_size, max_size, threshold, scale);
dir_size = &g_array_index (theme->dir_sizes, IconThemeDirSize, dir_size_index);
for (i = 0; i < self->dir_mtimes->len; i++)
{
IconThemeDirMtime *dir_mtime = &g_array_index (self->dir_mtimes, IconThemeDirMtime, i);
char *full_dir;
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))
{
GHashTable *icons = NULL;
if (dir_mtime->cache == NULL)
{
/* This will return NULL if the cache doesn't exist or is outdated */
dir_mtime->cache = gtk_icon_cache_new_for_path (dir_mtime->dir);
}
if (dir_mtime->cache != NULL)
icons = gtk_icon_cache_list_icons_in_directory (dir_mtime->cache, subdir, &theme->icons);
else
icons = scan_directory (self, full_dir, &theme->icons);
if (icons)
{
theme_add_dir_with_icons (theme,
dir_size,
FALSE,
g_steal_pointer (&full_dir),
icons);
g_hash_table_destroy (icons);
}
}
g_free (full_dir);
}
if (strcmp (theme->name, FALLBACK_ICON_THEME) == 0)
{
int r;
for (r = 0; self->resource_path[r]; r++)
{
GHashTable *icons;
char *full_dir;
/* Force a trailing / here, to avoid extra copies in GResource */
full_dir = g_build_filename (self->resource_path[r], subdir, " ", NULL);
full_dir[strlen (full_dir) - 1] = '\0';
icons = scan_resource_directory (self, full_dir, &theme->icons);
if (icons)
{
theme_add_dir_with_icons (theme,
dir_size,
TRUE,
g_steal_pointer (&full_dir),
icons);
g_hash_table_destroy (icons);
}
g_free (full_dir);
}
}
}
/*
* GtkIconPaintable
*/
static void icon_paintable_init (GdkPaintableInterface *iface);
enum
{
PROP_0,
PROP_FILE,
PROP_ICON_NAME,
PROP_IS_SYMBOLIC,
};
G_DEFINE_TYPE_WITH_CODE (GtkIconPaintable, gtk_icon_paintable, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
icon_paintable_init))
static void
gtk_icon_paintable_init (GtkIconPaintable *icon)
{
g_mutex_init (&icon->texture_lock);
}
static GtkIconPaintable *
icon_paintable_new (const char *icon_name,
int desired_size,
int desired_scale)
{
GtkIconPaintable *icon;
icon = g_object_new (GTK_TYPE_ICON_PAINTABLE,
"icon-name", icon_name,
NULL);
icon->desired_size = desired_size;
icon->desired_scale = desired_scale;
return icon;
}
static void
gtk_icon_paintable_finalize (GObject *object)
{
GtkIconPaintable *icon = (GtkIconPaintable *) object;
icon_cache_remove (icon);
g_strfreev (icon->key.icon_names);
g_free (icon->filename);
g_free (icon->icon_name);
g_clear_object (&icon->loadable);
g_clear_object (&icon->texture);
#ifdef G_OS_WIN32
g_clear_object (&icon->win32_icon);
#endif
g_mutex_clear (&icon->texture_lock);
G_OBJECT_CLASS (gtk_icon_paintable_parent_class)->finalize (object);
}
static void
gtk_icon_paintable_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkIconPaintable *icon = GTK_ICON_PAINTABLE (object);
switch (prop_id)
{
case PROP_FILE:
g_value_take_object (value, gtk_icon_paintable_get_file (icon));
break;
case PROP_ICON_NAME:
g_value_set_string (value, icon->icon_name);
break;
case PROP_IS_SYMBOLIC:
g_value_set_boolean (value, icon->is_symbolic);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_icon_paintable_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkIconPaintable *icon = GTK_ICON_PAINTABLE (object);
GFile *file;
switch (prop_id)
{
case PROP_FILE:
icon->is_resource = FALSE;
g_clear_pointer (&icon->filename, g_free);
file = G_FILE (g_value_get_object (value));
if (file)
{
icon->is_resource = g_file_has_uri_scheme (file, "resource");
if (icon->is_resource)
{
char *uri = g_file_get_uri (file);
icon->filename = g_strdup (uri + 11); /* resource:// */
g_free (uri);
}
else
icon->filename = g_file_get_path (file);
}
break;
case PROP_ICON_NAME:
g_free (icon->icon_name);
icon->icon_name = g_value_dup_string (value);
break;
case PROP_IS_SYMBOLIC:
icon->is_symbolic = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_icon_paintable_class_init (GtkIconPaintableClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = gtk_icon_paintable_get_property;
gobject_class->set_property = gtk_icon_paintable_set_property;
gobject_class->finalize = gtk_icon_paintable_finalize;
/**
* GtkIconPaintable:file: (attributes org.gtk.Property.get=gtk_icon_paintable_get_file)
*
* The file representing the icon, if any.
*/
g_object_class_install_property (gobject_class, PROP_FILE,
g_param_spec_object ("file",
P_("file"),
P_("The file representing the icon"),
G_TYPE_FILE,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NICK));
/**
* GtkIconPaintable:icon-name: (attributes org.gtk.Property.get=gtk_icon_paintable_get_icon_name)
*
* The icon name that was chosen during lookup.
*/
g_object_class_install_property (gobject_class, PROP_ICON_NAME,
g_param_spec_string ("icon-name",
P_("Icon name"),
P_("The icon name chosen during lookup"),
NULL,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NICK));
/**
* GtkIconPaintable:is-symbolic: (attributes org.gtk.Property.get=gtk_icon_paintable_is_symbolic)
*
* Whether the icon is symbolic or not.
*/
g_object_class_install_property (gobject_class, PROP_IS_SYMBOLIC,
g_param_spec_boolean ("is-symbolic",
P_("Is symbolic"),
P_("If the icon is symbolic"),
FALSE,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NICK));
}
static GFile *
new_resource_file (const char *filename)
{
char *escaped = g_uri_escape_string (filename,
G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE);
char *uri = g_strconcat ("resource://", escaped, NULL);
GFile *file = g_file_new_for_uri (uri);
g_free (escaped);
g_free (uri);
return file;
}
/**
* gtk_icon_paintable_get_file: (attributes org.gtk.Method.get_property=file)
* @self: a `GtkIconPaintable`
*
* Gets the `GFile` that was used to load the icon.
*
* Returns %NULL if the icon was not loaded from a file.
*
* Returns: (nullable) (transfer full): the `GFile` for the icon
*/
GFile *
gtk_icon_paintable_get_file (GtkIconPaintable *icon)
{
if (icon->filename)
{
if (icon->is_resource)
return new_resource_file (icon->filename);
else
return g_file_new_for_path (icon->filename);
}
return NULL;
}
/**
* gtk_icon_paintable_get_icon_name: (attributes org.gtk.Method.get_property=icon-name)
* @self: a `GtkIconPaintable`
*
* Get the icon name being used for this icon.
*
* When an icon looked up in the icon theme was not available, the
* icon theme may use fallback icons - either those specified to
* gtk_icon_theme_lookup_icon() or the always-available
* "image-missing". The icon chosen is returned by this function.
*
* If the icon was created without an icon theme, this function
* returns %NULL.
*
*
* Returns: (nullable) (type filename): the themed icon-name for the
* icon, or %NULL if its not a themed icon.
*/
const char *
gtk_icon_paintable_get_icon_name (GtkIconPaintable *icon)
{
g_return_val_if_fail (icon != NULL, NULL);
return icon->icon_name;
}
/**
* gtk_icon_paintable_is_symbolic: (attributes org.gtk.Method.get_property=is-symbolic)
* @self: a `GtkIconPaintable`
*
* 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.
*
* Note that to render a symbolic `GtkIconPaintable` properly (with
* recoloring), you have to set its icon name on a `GtkImage`.
*
* Returns: %TRUE if the icon is symbolic, %FALSE otherwise
*/
gboolean
gtk_icon_paintable_is_symbolic (GtkIconPaintable *icon)
{
g_return_val_if_fail (GTK_IS_ICON_PAINTABLE (icon), FALSE);
return icon->is_symbolic;
}
static GLoadableIcon *
icon_get_loadable (GtkIconPaintable *icon)
{
GFile *file;
GLoadableIcon *loadable;
if (icon->loadable)
return g_object_ref (icon->loadable);
if (icon->is_resource)
{
char *uri = g_strconcat ("resource://", icon->filename, NULL);
file = g_file_new_for_uri (uri);
g_free (uri);
}
else
file = g_file_new_for_path (icon->filename);
loadable = G_LOADABLE_ICON (g_file_icon_new (file));
g_object_unref (file);
return loadable;
}
/* This function contains the complicated logic for deciding
* on the size at which to load the icon and loading it at
* that size.
*/
static void
icon_ensure_texture__locked (GtkIconPaintable *icon,
gboolean in_thread)
{
GdkPixbuf *source_pixbuf;
gint64 before;
int pixel_size;
GError *load_error = NULL;
icon_cache_mark_used_if_cached (icon);
if (icon->texture)
return;
before = GDK_PROFILER_CURRENT_TIME;
/* This is the natural pixel size for the requested icon size + scale in this directory.
* We precalculate this so we can use it as a rasterization size for svgs.
*/
pixel_size = icon->desired_size * icon->desired_scale;
/* At this point, we need to actually get the icon; either from the
* builtin image or by loading the file
*/
source_pixbuf = NULL;
#ifdef G_OS_WIN32
if (icon->win32_icon)
{
source_pixbuf = g_object_ref (icon->win32_icon);
}
else
#endif
if (icon->is_resource)
{
if (icon->is_svg)
{
if (gtk_icon_paintable_is_symbolic (icon))
source_pixbuf = gtk_make_symbolic_pixbuf_from_resource (icon->filename,
pixel_size, pixel_size,
icon->desired_scale,
&load_error);
else
source_pixbuf = _gdk_pixbuf_new_from_resource_at_scale (icon->filename,
"svg",
pixel_size, pixel_size,
TRUE, &load_error);
}
else
source_pixbuf = _gdk_pixbuf_new_from_resource (icon->filename,
g_str_has_suffix (icon->filename, ".xpm") ? "xpm" : "png",
&load_error);
if (source_pixbuf == NULL)
{
g_warning ("Failed to load icon %s: %s", icon->filename, load_error->message);
g_clear_error (&load_error);
}
}
else
{
GLoadableIcon *loadable;
GInputStream *stream;
loadable = icon_get_loadable (icon);
stream = g_loadable_icon_load (loadable,
pixel_size,
NULL, NULL,
&load_error);
g_object_unref (loadable);
if (stream)
{
/* SVG icons are a special case - we just immediately scale them
* to the desired size
*/
if (icon->is_svg)
{
if (gtk_icon_paintable_is_symbolic (icon))
source_pixbuf = gtk_make_symbolic_pixbuf_from_path (icon->filename,
pixel_size, pixel_size,
icon->desired_scale,
&load_error);
else
source_pixbuf = _gdk_pixbuf_new_from_stream_at_scale (stream,
"svg",
pixel_size, pixel_size,
TRUE, NULL,
&load_error);
}
else
source_pixbuf = _gdk_pixbuf_new_from_stream (stream,
g_str_has_suffix (icon->filename, ".xpm") ? "xpm" : "png",
NULL, &load_error);
g_object_unref (stream);
}
if (source_pixbuf == NULL)
{
g_warning ("Failed to load icon %s: %s", icon->filename, load_error->message);
g_clear_error (&load_error);
}
}
if (!source_pixbuf)
{
source_pixbuf = _gdk_pixbuf_new_from_resource (IMAGE_MISSING_RESOURCE_PATH, "png", NULL);
icon->icon_name = g_strdup ("image-missing");
icon->is_symbolic = FALSE;
g_assert (source_pixbuf != NULL);
}
/* Actual scaling is done during rendering, so just keep the source pixbuf as a texture */
icon->texture = gdk_texture_new_for_pixbuf (source_pixbuf);
g_object_unref (source_pixbuf);
g_assert (icon->texture != NULL);
if (GDK_PROFILER_IS_RUNNING)
{
gint64 end = GDK_PROFILER_CURRENT_TIME;
/* Don't report quick (< 0.5 msec) parses */
if (end - before > 500000 || !in_thread)
{
gdk_profiler_add_markf (before, (end - before), in_thread ? "icon load (thread)" : "icon load" ,
"%s size %d@%d", icon->filename, icon->desired_size, icon->desired_scale);
}
}
}
static GdkTexture *
gtk_icon_paintable_ensure_texture (GtkIconPaintable *self)
{
GdkTexture *texture = NULL;
g_mutex_lock (&self->texture_lock);
icon_ensure_texture__locked (self, FALSE);
texture = self->texture;
g_mutex_unlock (&self->texture_lock);
g_assert (texture != NULL);
return texture;
}
static void
init_color_matrix (graphene_matrix_t *color_matrix,
graphene_vec4_t *color_offset,
const GdkRGBA *foreground_color,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color)
{
const GdkRGBA fg_default = { 0.7450980392156863, 0.7450980392156863, 0.7450980392156863, 1.0};
const GdkRGBA success_default = { 0.3046921492332342,0.6015716792553597, 0.023437857633325704, 1.0};
const GdkRGBA warning_default = {0.9570458533607996, 0.47266346227206835, 0.2421911955443656, 1.0 };
const GdkRGBA error_default = { 0.796887159533074, 0 ,0, 1.0 };
const GdkRGBA *fg = foreground_color ? foreground_color : &fg_default;
const GdkRGBA *sc = success_color ? success_color : &success_default;
const GdkRGBA *wc = warning_color ? warning_color : &warning_default;
const GdkRGBA *ec = error_color ? error_color : &error_default;
graphene_matrix_init_from_float (color_matrix,
(float[16]) {
sc->red - fg->red, sc->green - fg->green, sc->blue - fg->blue, 0,
wc->red - fg->red, wc->green - fg->green, wc->blue - fg->blue, 0,
ec->red - fg->red, ec->green - fg->green, ec->blue - fg->blue, 0,
0, 0, 0, fg->alpha
});
graphene_vec4_init (color_offset, fg->red, fg->green, fg->blue, 0);
}
static void
icon_paintable_snapshot (GdkPaintable *paintable,
GtkSnapshot *snapshot,
double width,
double height)
{
GtkIconPaintable *icon = GTK_ICON_PAINTABLE (paintable);
gtk_icon_paintable_snapshot_with_colors (icon, snapshot, width, height,
NULL, NULL, NULL, NULL);
}
/**
* gtk_icon_paintable_snapshot_with_colors:
* @icon: a `GtkIconPaintable`
* @snapshot: a `GdkSnapshot` to snapshot to
* @width: width to snapshot in
* @height: height to snapshot in
* @foreground_color: (nullable): a `GdkRGBA` representing the foreground color
* of the icon or %NULL to use the default color.
* @success_color: (nullable): a `GdkRGBA` representing the warning color
* of the icon or %NULL to use the default color
* @warning_color: (nullable): a `GdkRGBA` representing the warning color
* of the icon or %NULL to use the default color
* @error_color: (nullable): a `GdkRGBA` representing the error color
* of the icon or %NULL to use the default color
*
* Snapshots the `GtkIconPaintable`.
*
* This is similar to the implementation of [method@Gdk.Paintable.snapshot],
* but if the icon is symbolic it will be recolored with the specified colors
* (which usually comes from the theme).
*/
void
gtk_icon_paintable_snapshot_with_colors (GtkIconPaintable *icon,
GtkSnapshot *snapshot,
double width,
double height,
const GdkRGBA *foreground_color,
const GdkRGBA *success_color,
const GdkRGBA *warning_color,
const GdkRGBA *error_color)
{
GdkTexture *texture;
int texture_width, texture_height;
double render_width;
double render_height;
gboolean symbolic;
texture = gtk_icon_paintable_ensure_texture (icon);
symbolic = gtk_icon_paintable_is_symbolic (icon);
if (symbolic)
{
graphene_matrix_t matrix;
graphene_vec4_t offset;
init_color_matrix (&matrix, &offset,
foreground_color, success_color,
warning_color, error_color);
gtk_snapshot_push_color_matrix (snapshot, &matrix, &offset);
}
texture_width = gdk_texture_get_width (texture);
texture_height = gdk_texture_get_height (texture);
/* Keep aspect ratio and center */
if (texture_width >= texture_height)
{
render_width = width;
render_height = height * ((double)texture_height / texture_width);
}
else
{
render_width = width * ((double)texture_width / texture_height);
render_height = height;
}
gtk_snapshot_append_texture (snapshot, texture,
&GRAPHENE_RECT_INIT ((width - render_width) / 2,
(height - render_height) / 2,
render_width,
render_height));
if (symbolic)
gtk_snapshot_pop (snapshot);
}
static GdkPaintableFlags
icon_paintable_get_flags (GdkPaintable *paintable)
{
return GDK_PAINTABLE_STATIC_SIZE | GDK_PAINTABLE_STATIC_CONTENTS;
}
static int
icon_paintable_get_intrinsic_width (GdkPaintable *paintable)
{
GtkIconPaintable *icon = GTK_ICON_PAINTABLE (paintable);
return icon->desired_size;
}
static int
icon_paintable_get_intrinsic_height (GdkPaintable *paintable)
{
GtkIconPaintable *icon = GTK_ICON_PAINTABLE (paintable);
return icon->desired_size;
}
static void
icon_paintable_init (GdkPaintableInterface *iface)
{
iface->snapshot = icon_paintable_snapshot;
iface->get_flags = icon_paintable_get_flags;
iface->get_intrinsic_width = icon_paintable_get_intrinsic_width;
iface->get_intrinsic_height = icon_paintable_get_intrinsic_height;
}
/**
* gtk_icon_paintable_new_for_file:
* @file: a `GFile`
* @size: desired icon size
* @scale: the desired scale
*
* Creates a `GtkIconPaintable` for a file with a given size and scale.
*
* The icon can then be rendered by using it as a `GdkPaintable`.
*
* Returns: (transfer full): a `GtkIconPaintable` containing
* for the icon. Unref with g_object_unref()
*/
GtkIconPaintable *
gtk_icon_paintable_new_for_file (GFile *file,
int size,
int scale)
{
GtkIconPaintable *icon;
icon = icon_paintable_new (NULL, size, scale);
icon->loadable = G_LOADABLE_ICON (g_file_icon_new (file));
icon->is_resource = g_file_has_uri_scheme (file, "resource");
if (icon->is_resource)
{
char *uri;
uri = g_file_get_uri (file);
icon->filename = g_strdup (uri + 11); /* resource:// */
g_free (uri);
}
else
{
icon->filename = g_file_get_path (file);
}
icon->is_svg = suffix_from_name (icon->filename) == ICON_CACHE_FLAG_SVG_SUFFIX;
return icon;
}
static GtkIconPaintable *
gtk_icon_paintable_new_for_pixbuf (GtkIconTheme *icon_theme,
GdkPixbuf *pixbuf,
int size,
int scale)
{
GtkIconPaintable *icon;
int width, height;
if (size <= 0)
{
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
size = MAX (width, height);
}
icon = icon_paintable_new (NULL, size, scale);
icon->texture = gdk_texture_new_for_pixbuf (pixbuf);
return icon;
}
/**
* gtk_icon_theme_lookup_by_gicon:
* @self: a `GtkIconTheme`
* @icon: the `GIcon` to look up
* @size: desired icon size
* @scale: the desired scale
* @direction: text direction the icon will be displayed in
* @flags: flags modifying the behavior of the icon lookup
*
* Looks up a icon for a desired size and window scale.
*
* The icon can then be rendered by using it as a `GdkPaintable`,
* or you can get information such as the filename and size.
*
* Returns: (transfer full): a `GtkIconPaintable` containing
* information about the icon. Unref with g_object_unref()
*/
GtkIconPaintable *
gtk_icon_theme_lookup_by_gicon (GtkIconTheme *self,
GIcon *gicon,
int size,
int scale,
GtkTextDirection direction,
GtkIconLookupFlags flags)
{
GtkIconPaintable *icon = NULL;
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
g_return_val_if_fail (G_IS_ICON (gicon), NULL);
/* We can't render emblemed icons atm, but at least render the base */
while (G_IS_EMBLEMED_ICON (gicon))
gicon = g_emblemed_icon_get_icon (G_EMBLEMED_ICON (gicon));
g_assert (gicon); /* shut up gcc -Wnull-dereference */
if (GDK_IS_PIXBUF (gicon))
{
GdkPixbuf *pixbuf = GDK_PIXBUF (gicon);
icon = gtk_icon_paintable_new_for_pixbuf (self, pixbuf, size, scale);
}
else if (G_IS_FILE_ICON (gicon))
{
GFile *file = g_file_icon_get_file (G_FILE_ICON (gicon));
icon = gtk_icon_paintable_new_for_file (file, size, scale);
}
else if (G_IS_LOADABLE_ICON (gicon))
{
icon = icon_paintable_new (NULL, size, scale);
icon->loadable = G_LOADABLE_ICON (g_object_ref (gicon));
icon->is_svg = FALSE;
}
else if (G_IS_THEMED_ICON (gicon))
{
const char **names;
names = (const char **) g_themed_icon_get_names (G_THEMED_ICON (gicon));
icon = gtk_icon_theme_lookup_icon (self, names[0], &names[1], size, scale, direction, flags);
}
else
{
g_debug ("Unhandled GIcon type %s", G_OBJECT_TYPE_NAME (gicon));
icon = icon_paintable_new ("image-missing", size, scale);
icon->filename = g_strdup (IMAGE_MISSING_RESOURCE_PATH);
icon->is_resource = TRUE;
}
return icon;
}
/**
* gtk_icon_theme_get_display:
* @self: a `GtkIconTheme`
*
* Returns the display that the `GtkIconTheme` object was
* created for.
*
* Returns: (nullable) (transfer none): the display of @icon_theme
*/
GdkDisplay *
gtk_icon_theme_get_display (GtkIconTheme *self)
{
g_return_val_if_fail (GTK_IS_ICON_THEME (self), NULL);
return self->display;
}
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