diff options
Diffstat (limited to 'gcr/gcr-memory-icon.c')
| -rw-r--r-- | gcr/gcr-memory-icon.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/gcr/gcr-memory-icon.c b/gcr/gcr-memory-icon.c deleted file mode 100644 index b37f9a5..0000000 --- a/gcr/gcr-memory-icon.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright (C) 2011 Collabora Ltd. - * - * This program 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 2.1 of - * the License, or (at your option) any later version. - * - * This program 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 program; if not, see <http://www.gnu.org/licenses/>. - * - * Author: Stef Walter <stefw@collabora.co.uk> - */ - -#include "config.h" - -#include "gcr-memory-icon.h" - -#include <string.h> - -struct _GcrMemoryIconPrivate { - gpointer data; - gsize n_data; - goffset offset; - gchar *image_type; - GDestroyNotify destroy; -}; - -/* Forward declarations */ -static void _gcr_memory_icon_iface_icon (GIconIface *iface); -static void _gcr_memory_icon_iface_loadable_icon (GLoadableIconIface *iface); - -G_DEFINE_TYPE_WITH_CODE (GcrMemoryIcon, _gcr_memory_icon, G_TYPE_OBJECT, - G_ADD_PRIVATE (GcrMemoryIcon); - G_IMPLEMENT_INTERFACE (G_TYPE_ICON, _gcr_memory_icon_iface_icon); - G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON, _gcr_memory_icon_iface_loadable_icon); -); - - -static void -_gcr_memory_icon_init (GcrMemoryIcon *self) -{ - self->pv = _gcr_memory_icon_get_instance_private (self); -} - -static void -_gcr_memory_icon_finalize (GObject *obj) -{ - GcrMemoryIcon *self = GCR_MEMORY_ICON (obj); - - if (self->pv->destroy) - (self->pv->destroy) (self->pv->data); - g_free (self->pv->image_type); - - G_OBJECT_CLASS (_gcr_memory_icon_parent_class)->finalize (obj); -} - -static void -_gcr_memory_icon_class_init (GcrMemoryIconClass *klass) -{ - GObjectClass *gobject_class = G_OBJECT_CLASS (klass); - - gobject_class->finalize = _gcr_memory_icon_finalize; -} - -static gboolean -_gcr_memory_icon_equal (GIcon *icon1, GIcon *icon2) -{ - GcrMemoryIcon *one = GCR_MEMORY_ICON (icon1); - GcrMemoryIcon *two = GCR_MEMORY_ICON (icon2); - - if (icon1 == icon2) - return TRUE; - if (!g_str_equal (one->pv->image_type, two->pv->image_type)) - return FALSE; - if ((one->pv->n_data - one->pv->offset) != (two->pv->n_data - two->pv->offset)) - return FALSE; - return memcmp ((guchar*)one->pv->data + one->pv->offset, - (guchar*)two->pv->data + two->pv->offset, - one->pv->n_data - one->pv->offset) == 0; -} - -static guint -_gcr_memory_icon_hash (GIcon *icon) -{ - GcrMemoryIcon *self = GCR_MEMORY_ICON (icon); - const signed char *p, *end; - guint32 hash; - - hash = g_str_hash (self->pv->image_type); - - /* Adapted from g_str_hash */ - p = self->pv->data; - end = p + self->pv->n_data; - p += self->pv->offset; - while (p < end) - hash = (hash << 5) + hash + *(p++); - - return hash; -} - -static void -_gcr_memory_icon_iface_icon (GIconIface *iface) -{ - iface->equal = _gcr_memory_icon_equal; - iface->hash = _gcr_memory_icon_hash; -} - -static GInputStream * -_gcr_memory_icon_load (GLoadableIcon *icon, int size, gchar **type, - GCancellable *cancellable, GError **error) -{ - GcrMemoryIcon *self = GCR_MEMORY_ICON (icon); - GInputStream *is; - - if (type != NULL) - *type = g_strdup (self->pv->image_type); - - is = g_memory_input_stream_new_from_data ((guchar*)self->pv->data + self->pv->offset, - self->pv->n_data, NULL); - - /* - * Hold a reference to this object from the stream, so that we can rely - * on the data hanging around. - */ - g_object_set_data_full (G_OBJECT (is), "back-reference", g_object_ref (self), - g_object_unref); - - return is; -} - -static void -_gcr_memory_icon_load_async (GLoadableIcon *icon, int size, GCancellable *cancellable, - GAsyncReadyCallback callback, gpointer user_data) -{ - GTask *task; - - task = g_task_new (icon, cancellable, callback, user_data); - g_task_set_source_tag (task, _gcr_memory_icon_load_async); - - /* We don't do anything with the task value, so just return a bogus value */ - g_task_return_pointer (task, NULL, NULL); - g_object_unref (task); -} - -static GInputStream* -_gcr_memory_icon_finish (GLoadableIcon *icon, GAsyncResult *res, char **type, - GError **error) -{ - g_return_val_if_fail (g_task_is_valid (res, icon), NULL); - - return _gcr_memory_icon_load (icon, 0, type, NULL, error); -} - - -static void -_gcr_memory_icon_iface_loadable_icon (GLoadableIconIface *iface) -{ - iface->load = _gcr_memory_icon_load; - iface->load_async = _gcr_memory_icon_load_async; - iface->load_finish = _gcr_memory_icon_finish; -} - -/** - * _gcr_memory_icon_new: - * @image_type: MIME content-type of the image. - * @data: Data for the image. - * @n_data: Length of data. - * - * Create a new GIcon based on image data in memory. The data will be copied - * by the new icon. - * - * Returns: (transfer full) (type Gcr.MemoryIcon): A newly allocated icon. - */ -GIcon* -_gcr_memory_icon_new (const gchar *image_type, gconstpointer data, gsize n_data) -{ - g_return_val_if_fail (image_type != NULL, NULL); - g_return_val_if_fail (data != NULL, NULL); - g_return_val_if_fail (n_data != 0, NULL); - - return _gcr_memory_icon_new_full (image_type, g_memdup2 (data, n_data), - n_data, 0, g_free); -} - -/** - * _gcr_memory_icon_new_full: - * @image_type: MIME content-type of the image. - * @data: Data for the image. - * @n_data: Length of data. - * @offset: Offset of the start of the image in @data. - * @destroy: Callback to free or release @data when no longer needed. - * - * Create a new GIcon based on image data in memory. The data will be used - * directly from the @data passed. Use @destroy to control the lifetime of - * the data in memory. - * - * Returns: (transfer full): A newly allocated icon. - */ -GIcon* -_gcr_memory_icon_new_full (const gchar *image_type, gpointer data, gsize n_data, - goffset offset, GDestroyNotify destroy) -{ - GcrMemoryIcon *self; - - g_return_val_if_fail (image_type != NULL, NULL); - g_return_val_if_fail (data != NULL, NULL); - g_return_val_if_fail (offset < n_data, NULL); - - self = g_object_new (GCR_TYPE_MEMORY_ICON, NULL); - self->pv->data = data; - self->pv->n_data = n_data; - self->pv->offset = offset; - self->pv->destroy = destroy; - self->pv->image_type = g_strdup (image_type); - - return G_ICON (self); -} |