static void
file_changed_cb (GFileMonitor *monitor,
GFile *file,
GFile *other,
GFileMonitorEvent event_type,
gpointer user_data)
{
StTextureCache *cache = user_data;
char *key;
guint file_hash;
if (event_type != G_FILE_MONITOR_EVENT_CHANGED)
return;
file_hash = g_file_hash (file);
key = g_strdup_printf (CACHE_PREFIX_FILE "%u", file_hash);
g_hash_table_remove (cache->priv->keyed_cache, key);
g_free (key);
key = g_strdup_printf (CACHE_PREFIX_FILE_FOR_CAIRO "%u", file_hash);
g_hash_table_remove (cache->priv->keyed_cache, key);
g_free (key);
g_signal_emit (cache, signals[TEXTURE_FILE_CHANGED], 0, file);
}
guint
ide_file_hash (IdeFile *self)
{
g_return_val_if_fail (IDE_IS_FILE (self), 0);
return g_file_hash (self->file);
}
/**
* st_texture_cache_load_file_async:
* @cache: The texture cache instance
* @file: a #GFile of the image file from which to create a pixbuf
* @available_width: available width for the image, can be -1 if not limited
* @available_height: available height for the image, can be -1 if not limited
* @scale: scale factor of the display
*
* Asynchronously load an image. Initially, the returned texture will have a natural
* size of zero. At some later point, either the image will be loaded successfully
* and at that point size will be negotiated, or upon an error, no image will be set.
*
* Return value: (transfer none): A new #ClutterActor with no image loaded initially.
*/
ClutterActor *
st_texture_cache_load_file_async (StTextureCache *cache,
GFile *file,
int available_width,
int available_height,
int scale)
{
ClutterActor *texture;
AsyncTextureLoadData *request;
StTextureCachePolicy policy;
gchar *key;
key = g_strdup_printf (CACHE_PREFIX_FILE "%u", g_file_hash (file));
policy = ST_TEXTURE_CACHE_POLICY_NONE; /* XXX */
texture = (ClutterActor *) create_default_texture ();
if (ensure_request (cache, key, policy, &request, texture))
{
/* If there's an outstanding request, we've just added ourselves to it */
g_free (key);
}
else
{
/* Else, make a new request */
request->cache = cache;
/* Transfer ownership of key */
request->key = key;
request->file = g_object_ref (file);
request->policy = policy;
request->width = available_width;
request->height = available_height;
request->scale = scale;
load_texture_async (cache, request);
}
ensure_monitor_for_file (cache, file);
return CLUTTER_ACTOR (texture);
}
static cairo_surface_t *
st_texture_cache_load_file_sync_to_cairo_surface (StTextureCache *cache,
StTextureCachePolicy policy,
GFile *file,
int available_width,
int available_height,
int scale,
GError **error)
{
cairo_surface_t *surface;
GdkPixbuf *pixbuf;
char *key;
key = g_strdup_printf (CACHE_PREFIX_FILE_FOR_CAIRO "%u", g_file_hash (file));
surface = g_hash_table_lookup (cache->priv->keyed_cache, key);
if (surface == NULL)
{
pixbuf = impl_load_pixbuf_file (file, available_width, available_height, scale, error);
if (!pixbuf)
goto out;
surface = pixbuf_to_cairo_surface (pixbuf);
g_object_unref (pixbuf);
if (policy == ST_TEXTURE_CACHE_POLICY_FOREVER)
{
cairo_surface_reference (surface);
g_hash_table_insert (cache->priv->keyed_cache, g_strdup (key), surface);
}
}
else
cairo_surface_reference (surface);
ensure_monitor_for_file (cache, file);
out:
g_free (key);
return surface;
}
static CoglTexture *
st_texture_cache_load_file_sync_to_cogl_texture (StTextureCache *cache,
StTextureCachePolicy policy,
GFile *file,
int available_width,
int available_height,
int scale,
GError **error)
{
CoglTexture *texdata;
GdkPixbuf *pixbuf;
char *key;
key = g_strdup_printf (CACHE_PREFIX_FILE "%u", g_file_hash (file));
texdata = g_hash_table_lookup (cache->priv->keyed_cache, key);
if (texdata == NULL)
{
pixbuf = impl_load_pixbuf_file (file, available_width, available_height, scale, error);
if (!pixbuf)
goto out;
texdata = pixbuf_to_cogl_texture (pixbuf);
g_object_unref (pixbuf);
if (policy == ST_TEXTURE_CACHE_POLICY_FOREVER)
{
cogl_object_ref (texdata);
g_hash_table_insert (cache->priv->keyed_cache, g_strdup (key), texdata);
}
}
else
cogl_object_ref (texdata);
ensure_monitor_for_file (cache, file);
out:
g_free (key);
return texdata;
}
