mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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921 lines
28 KiB
C
921 lines
28 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2017 Benjamin Otte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gio/gio.h>
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#include "gdkcontentdeserializer.h"
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#include "gdkcontentformats.h"
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#include "filetransferportalprivate.h"
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#include "gdktexture.h"
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#include "gdkrgbaprivate.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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/**
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* SECTION:gdkcontentdeserializer
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* @Short_description: Deserialize content for transfer
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* @Title: GdkContentDeserializer
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* @See_also: #GdkContentSerializer
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*
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* A GdkContentDeserializer is used to deserialize content received via
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* inter-application data transfers.
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*/
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typedef struct _Deserializer Deserializer;
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struct _Deserializer
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{
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const char * mime_type; /* interned */
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GType type;
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GdkContentDeserializeFunc deserialize;
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gpointer data;
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GDestroyNotify notify;
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};
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GQueue deserializers = G_QUEUE_INIT;
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static void init (void);
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#define GDK_CONTENT_DESERIALIZER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_CONTENT_DESERIALIZER, GdkContentDeserializerClass))
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#define GDK_IS_CONTENT_DESERIALIZER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_CONTENT_DESERIALIZER))
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#define GDK_CONTENT_DESERIALIZER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_CONTENT_DESERIALIZER, GdkContentDeserializerClass))
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typedef struct _GdkContentDeserializerClass GdkContentDeserializerClass;
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struct _GdkContentDeserializer
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{
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GObject parent_instance;
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const char *mime_type; /* interned */
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GValue value;
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GInputStream *stream;
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int priority;
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gboolean returned;
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GCancellable *cancellable;
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gpointer user_data;
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GAsyncReadyCallback callback;
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gpointer callback_data;
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gpointer task_data;
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GDestroyNotify task_notify;
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GError *error;
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};
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struct _GdkContentDeserializerClass
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{
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GObjectClass parent_class;
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};
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static gpointer
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gdk_content_deserializer_async_result_get_user_data (GAsyncResult *res)
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{
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return GDK_CONTENT_DESERIALIZER (res)->callback_data;
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}
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static GObject *
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gdk_content_deserializer_async_result_get_source_object (GAsyncResult *res)
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{
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return NULL;
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}
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static void
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gdk_content_deserializer_async_result_iface_init (GAsyncResultIface *iface)
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{
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iface->get_user_data = gdk_content_deserializer_async_result_get_user_data;
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iface->get_source_object = gdk_content_deserializer_async_result_get_source_object;
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}
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G_DEFINE_TYPE_WITH_CODE (GdkContentDeserializer, gdk_content_deserializer, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_RESULT, gdk_content_deserializer_async_result_iface_init))
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static void
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gdk_content_deserializer_finalize (GObject *object)
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{
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GdkContentDeserializer *deserializer = GDK_CONTENT_DESERIALIZER (object);
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g_value_unset (&deserializer->value);
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g_clear_object (&deserializer->stream);
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g_clear_object (&deserializer->cancellable);
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g_clear_error (&deserializer->error);
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if (deserializer->task_notify)
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deserializer->task_notify (deserializer->task_data);
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G_OBJECT_CLASS (gdk_content_deserializer_parent_class)->finalize (object);
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}
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static void
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gdk_content_deserializer_class_init (GdkContentDeserializerClass *content_deserializer_class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (content_deserializer_class);
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object_class->finalize = gdk_content_deserializer_finalize;
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}
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static void
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gdk_content_deserializer_init (GdkContentDeserializer *content_deserializer)
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{
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}
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static void
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gdk_content_deserializer_run (const char *mime_type,
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GType type,
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GInputStream *stream,
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int priority,
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GCancellable *cancellable,
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GdkContentDeserializeFunc deserialize_func,
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gpointer user_data,
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GAsyncReadyCallback callback,
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gpointer callback_data)
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{
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GdkContentDeserializer *deserializer;
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deserializer = g_object_new (GDK_TYPE_CONTENT_DESERIALIZER, NULL);
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deserializer->mime_type = mime_type;
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g_value_init (&deserializer->value, type);
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deserializer->stream = g_object_ref (stream);
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deserializer->priority = priority;
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if (cancellable)
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deserializer->cancellable = g_object_ref (cancellable);
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deserializer->user_data = user_data;
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deserializer->callback = callback;
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deserializer->callback_data = callback_data;
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deserialize_func (deserializer);
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}
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/**
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* gdk_content_deserializer_get_mime_type:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the mime type to deserialize from.
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*
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* Returns: (transfer none): the mime type for the current operation
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*/
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const char *
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gdk_content_deserializer_get_mime_type (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), NULL);
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return deserializer->mime_type;
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}
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/**
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* gdk_content_deserializer_get_gtype:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the GType to create an instance of.
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*
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* Returns: the GType for the current operation
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*/
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GType
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gdk_content_deserializer_get_gtype (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), G_TYPE_INVALID);
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return G_VALUE_TYPE (&deserializer->value);
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}
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/**
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* gdk_content_deserializer_get_value:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the #GValue to store the deserialized object in.
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*
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* Returns: (transfer none): the #GValue for the current operation
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*/
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GValue *
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gdk_content_deserializer_get_value (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), NULL);
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return &deserializer->value;
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}
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/**
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* gdk_content_deserializer_get_input_stream:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the input stream that was passed to gdk_content_deserialize_async().
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*
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* Returns: (transfer none): the input stream for the current operation
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*/
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GInputStream *
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gdk_content_deserializer_get_input_stream (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), NULL);
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return deserializer->stream;
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}
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/**
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* gdk_content_deserializer_get_priority:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the io priority that was passed to gdk_content_deserialize_async().
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*
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* Returns: the io priority for the current operation
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*/
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int
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gdk_content_deserializer_get_priority (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), G_PRIORITY_DEFAULT);
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return deserializer->priority;
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}
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/**
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* gdk_content_deserializer_get_cancellable:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the cancellable that was passed to gdk_content_deserialize_async().
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*
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* Returns: (transfer none): the cancellable for the current operation
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*/
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GCancellable *
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gdk_content_deserializer_get_cancellable (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), NULL);
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return deserializer->cancellable;
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}
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/**
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* gdk_content_deserializer_get_user_data:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the user data that was passed when the deserializer was registered.
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*
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* Returns: (transfer none): the user data for this deserializer
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*/
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gpointer
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gdk_content_deserializer_get_user_data (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), NULL);
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return deserializer->user_data;
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}
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/**
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* gdk_content_deserializer_set_task_data:
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* @deserializer: a #GdkContentDeserializer
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* @data: data to associate with this operation
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* @notify: destroy notify for @data
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*
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* Associate data with the current deserialization operation.
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*/
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void
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gdk_content_deserializer_set_task_data (GdkContentDeserializer *deserializer,
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gpointer data,
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GDestroyNotify notify)
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{
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g_return_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer));
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if (deserializer->task_notify)
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deserializer->task_notify (deserializer->task_data);
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deserializer->task_data = data;
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deserializer->task_notify = notify;
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}
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/**
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* gdk_content_deserializer_get_task_data:
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* @deserializer: a #GdkContentDeserializer
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*
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* Gets the data that was associated with @deserializer via gdk_content_deserializer_set_task_data().
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*
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* Returns: (transfer none): the task data for @deserializer
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*/
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gpointer
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gdk_content_deserializer_get_task_data (GdkContentDeserializer *deserializer)
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{
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g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer), NULL);
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return deserializer->task_data;
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}
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static gboolean
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gdk_content_deserializer_emit_callback (gpointer data)
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{
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GdkContentDeserializer *deserializer = data;
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if (deserializer->callback)
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{
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deserializer->callback (NULL, G_ASYNC_RESULT (deserializer), deserializer->callback_data);
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}
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return G_SOURCE_REMOVE;
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}
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/**
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* gdk_content_deserializer_return_success:
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* @deserializer: a #GdkContentDeserializer
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*
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* Indicate that the deserialization has been successfully completed.
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*/
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void
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gdk_content_deserializer_return_success (GdkContentDeserializer *deserializer)
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{
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g_return_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer));
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g_return_if_fail (!deserializer->returned);
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deserializer->returned = TRUE;
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g_idle_add_full (deserializer->priority,
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gdk_content_deserializer_emit_callback,
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deserializer,
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g_object_unref);
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/* NB: the idle will destroy our reference */
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}
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/**
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* gdk_content_deserializer_return_error:
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* @deserializer: a #GdkContentDeserializer
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* @error: a #GError
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*
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* Indicate that the deserialization has ended with an error.
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* This function consumes @error.
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*/
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void
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gdk_content_deserializer_return_error (GdkContentDeserializer *deserializer,
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GError *error)
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{
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g_return_if_fail (GDK_IS_CONTENT_DESERIALIZER (deserializer));
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g_return_if_fail (!deserializer->returned);
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g_return_if_fail (error != NULL);
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deserializer->error = error;
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/* FIXME: naming */
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gdk_content_deserializer_return_success (deserializer);
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}
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/**
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* gdk_content_register_deserializer:
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* @mime_type: the mime type which the function can deserialize from
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* @type: the type of objects that the function creates
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* @deserialize: the callback
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* @data: data that @deserialize can access
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* @notify: destroy notify for @data
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*
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* Registers a function to create objects of a given @type from
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* a serialized representation with the given mime type.
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*/
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void
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gdk_content_register_deserializer (const char *mime_type,
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GType type,
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GdkContentDeserializeFunc deserialize,
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gpointer data,
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GDestroyNotify notify)
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{
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Deserializer *deserializer;
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g_return_if_fail (mime_type != NULL);
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g_return_if_fail (deserialize != NULL);
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init ();
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deserializer = g_slice_new0 (Deserializer);
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deserializer->mime_type = g_intern_string (mime_type);
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deserializer->type = type;
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deserializer->deserialize = deserialize;
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deserializer->data = data;
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deserializer->notify = notify;
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g_queue_push_tail (&deserializers, deserializer);
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}
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static Deserializer *
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lookup_deserializer (const char *mime_type,
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GType type)
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{
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GList *l;
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g_return_val_if_fail (mime_type != NULL, NULL);
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init ();
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mime_type = g_intern_string (mime_type);
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for (l = g_queue_peek_head_link (&deserializers); l; l = l->next)
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{
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Deserializer *deserializer = l->data;
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if (deserializer->mime_type == mime_type &&
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deserializer->type == type)
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return deserializer;
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}
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return NULL;
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}
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/**
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* gdk_content_formats_union_deserialize_gtypes:
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* @formats: (transfer full): a #GdkContentFormats
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*
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* Add GTypes for mime types in @formats for which deserializers are
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* registered.
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*
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* Return: a new #GdkContentFormats
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*/
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GdkContentFormats *
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gdk_content_formats_union_deserialize_gtypes (GdkContentFormats *formats)
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{
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GdkContentFormatsBuilder *builder;
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GList *l;
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g_return_val_if_fail (formats != NULL, NULL);
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init ();
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builder = gdk_content_formats_builder_new ();
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gdk_content_formats_builder_add_formats (builder, formats);
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for (l = g_queue_peek_head_link (&deserializers); l; l = l->next)
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{
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Deserializer *deserializer = l->data;
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if (gdk_content_formats_contain_mime_type (formats, deserializer->mime_type))
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gdk_content_formats_builder_add_gtype (builder, deserializer->type);
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}
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gdk_content_formats_unref (formats);
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return gdk_content_formats_builder_free_to_formats (builder);
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}
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/**
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* gdk_content_formats_union_deserialize_mime_types:
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* @formats: (transfer full): a #GdkContentFormats
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*
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* Add mime types for GTypes in @formats for which deserializers are
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* registered.
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*
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* Return: a new #GdkContentFormats
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*/
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GdkContentFormats *
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gdk_content_formats_union_deserialize_mime_types (GdkContentFormats *formats)
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{
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GdkContentFormatsBuilder *builder;
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GList *l;
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g_return_val_if_fail (formats != NULL, NULL);
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init ();
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builder = gdk_content_formats_builder_new ();
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gdk_content_formats_builder_add_formats (builder, formats);
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for (l = g_queue_peek_head_link (&deserializers); l; l = l->next)
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{
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Deserializer *deserializer = l->data;
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if (gdk_content_formats_contain_gtype (formats, deserializer->type))
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gdk_content_formats_builder_add_mime_type (builder, deserializer->mime_type);
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}
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gdk_content_formats_unref (formats);
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return gdk_content_formats_builder_free_to_formats (builder);
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}
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static void
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deserialize_not_found (GdkContentDeserializer *deserializer)
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{
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GError *error = g_error_new (G_IO_ERROR,
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G_IO_ERROR_NOT_FOUND,
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"Could not convert data from %s to %s",
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gdk_content_deserializer_get_mime_type (deserializer),
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g_type_name (gdk_content_deserializer_get_gtype (deserializer)));
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gdk_content_deserializer_return_error (deserializer, error);
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}
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/**
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* gdk_content_deserialize_async:
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* @stream: a #GInputStream to read the serialized content from
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* @mime_type: the mime type to deserialize from
|
|
* @type: the GType to deserialize from
|
|
* @io_priority: the io priority of the operation
|
|
* @cancellable: (nullable): optional #GCancellable object
|
|
* @callback: (scope async): callback to call when the operation is done
|
|
* @user_data: (closure): data to pass to the callback function
|
|
*
|
|
* Read content from the given input stream and deserialize it, asynchronously.
|
|
* When the operation is finished, @callback will be called. You can then
|
|
* call gdk_content_deserialize_finish() to get the result of the operation.
|
|
*/
|
|
void
|
|
gdk_content_deserialize_async (GInputStream *stream,
|
|
const char *mime_type,
|
|
GType type,
|
|
int io_priority,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
Deserializer *deserializer;
|
|
|
|
g_return_if_fail (G_IS_INPUT_STREAM (stream));
|
|
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
|
|
g_return_if_fail (callback != NULL);
|
|
|
|
deserializer = lookup_deserializer (mime_type, type);
|
|
|
|
gdk_content_deserializer_run (mime_type,
|
|
type,
|
|
stream,
|
|
io_priority,
|
|
cancellable,
|
|
deserializer ? deserializer->deserialize : deserialize_not_found,
|
|
deserializer ? deserializer->data : NULL,
|
|
callback,
|
|
user_data);
|
|
}
|
|
|
|
/**
|
|
* gdk_content_deserialize_finish:
|
|
* @result: the #GAsyncResult
|
|
* @value: return location for the result of the operation
|
|
* @error: return location for an error
|
|
*
|
|
* Finishes a content deserialization operation.
|
|
*
|
|
* Returns: %TRUE if the operation was successful. In this case, @value is set.
|
|
* %FALSE if an error occurred. In this case, @error is set
|
|
*/
|
|
gboolean
|
|
gdk_content_deserialize_finish (GAsyncResult *result,
|
|
GValue *value,
|
|
GError **error)
|
|
{
|
|
GdkContentDeserializer *deserializer;
|
|
|
|
g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (result), FALSE);
|
|
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
|
|
deserializer = GDK_CONTENT_DESERIALIZER (result);
|
|
g_return_val_if_fail (G_VALUE_HOLDS (value, G_VALUE_TYPE (&deserializer->value)), FALSE);
|
|
|
|
if (deserializer->error)
|
|
{
|
|
if (error)
|
|
*error = g_error_copy (deserializer->error);
|
|
return FALSE;
|
|
}
|
|
|
|
g_value_copy (&deserializer->value, value);
|
|
return TRUE;
|
|
}
|
|
|
|
/*** DESERIALIZERS ***/
|
|
|
|
static void
|
|
pixbuf_deserializer_finish (GObject *source,
|
|
GAsyncResult *res,
|
|
gpointer deserializer)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
GValue *value;
|
|
GError *error = NULL;
|
|
|
|
pixbuf = gdk_pixbuf_new_from_stream_finish (res, &error);
|
|
if (pixbuf == NULL)
|
|
{
|
|
gdk_content_deserializer_return_error (deserializer, error);
|
|
return;
|
|
}
|
|
|
|
value = gdk_content_deserializer_get_value (deserializer);
|
|
if (G_VALUE_HOLDS (value, GDK_TYPE_PIXBUF))
|
|
{
|
|
g_value_take_object (value, pixbuf);
|
|
}
|
|
else if (G_VALUE_HOLDS (value, GDK_TYPE_TEXTURE))
|
|
{
|
|
GdkTexture *texture;
|
|
texture = gdk_texture_new_for_pixbuf (pixbuf);
|
|
g_object_unref (pixbuf);
|
|
g_value_take_object (value, texture);
|
|
}
|
|
else
|
|
{
|
|
g_assert_not_reached ();
|
|
}
|
|
gdk_content_deserializer_return_success (deserializer);
|
|
}
|
|
|
|
static void
|
|
pixbuf_deserializer (GdkContentDeserializer *deserializer)
|
|
{
|
|
gdk_pixbuf_new_from_stream_async (gdk_content_deserializer_get_input_stream (deserializer),
|
|
gdk_content_deserializer_get_cancellable (deserializer),
|
|
pixbuf_deserializer_finish,
|
|
deserializer);
|
|
}
|
|
|
|
static void
|
|
string_deserializer_finish (GObject *source,
|
|
GAsyncResult *result,
|
|
gpointer deserializer)
|
|
{
|
|
GOutputStream *stream = G_OUTPUT_STREAM (source);
|
|
GError *error = NULL;
|
|
gssize written;
|
|
|
|
written = g_output_stream_splice_finish (stream, result, &error);
|
|
if (written < 0)
|
|
{
|
|
gdk_content_deserializer_return_error (deserializer, error);
|
|
return;
|
|
}
|
|
else if (written == 0)
|
|
{
|
|
/* Never return NULL, we only return that on error */
|
|
g_value_set_string (gdk_content_deserializer_get_value (deserializer), "");
|
|
}
|
|
else
|
|
{
|
|
g_value_take_string (gdk_content_deserializer_get_value (deserializer),
|
|
g_memory_output_stream_steal_data (G_MEMORY_OUTPUT_STREAM (
|
|
g_filter_output_stream_get_base_stream (G_FILTER_OUTPUT_STREAM (stream)))));
|
|
}
|
|
gdk_content_deserializer_return_success (deserializer);
|
|
}
|
|
|
|
static void
|
|
string_deserializer (GdkContentDeserializer *deserializer)
|
|
{
|
|
GOutputStream *output, *filter;
|
|
GCharsetConverter *converter;
|
|
GError *error = NULL;
|
|
|
|
converter = g_charset_converter_new ("utf-8",
|
|
gdk_content_deserializer_get_user_data (deserializer),
|
|
&error);
|
|
if (converter == NULL)
|
|
{
|
|
gdk_content_deserializer_return_error (deserializer, error);
|
|
return;
|
|
}
|
|
g_charset_converter_set_use_fallback (converter, TRUE);
|
|
|
|
output = g_memory_output_stream_new_resizable ();
|
|
filter = g_converter_output_stream_new (output, G_CONVERTER (converter));
|
|
g_object_unref (output);
|
|
g_object_unref (converter);
|
|
|
|
g_output_stream_splice_async (filter,
|
|
gdk_content_deserializer_get_input_stream (deserializer),
|
|
G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
|
|
gdk_content_deserializer_get_priority (deserializer),
|
|
gdk_content_deserializer_get_cancellable (deserializer),
|
|
string_deserializer_finish,
|
|
deserializer);
|
|
g_object_unref (filter);
|
|
}
|
|
|
|
static void
|
|
file_uri_deserializer_finish (GObject *source,
|
|
GAsyncResult *result,
|
|
gpointer deserializer)
|
|
{
|
|
GOutputStream *stream = G_OUTPUT_STREAM (source);
|
|
GError *error = NULL;
|
|
gssize written;
|
|
GValue *value;
|
|
char *str;
|
|
char **uris;
|
|
|
|
written = g_output_stream_splice_finish (stream, result, &error);
|
|
if (written < 0)
|
|
{
|
|
gdk_content_deserializer_return_error (deserializer, error);
|
|
return;
|
|
}
|
|
|
|
/* write terminating NULL */
|
|
if (!g_output_stream_write (stream, "", 1, NULL, &error))
|
|
{
|
|
gdk_content_deserializer_return_error (deserializer, error);
|
|
return;
|
|
}
|
|
|
|
str = g_memory_output_stream_steal_data (G_MEMORY_OUTPUT_STREAM (stream));
|
|
uris = g_uri_list_extract_uris (str);
|
|
g_free (str);
|
|
|
|
value = gdk_content_deserializer_get_value (deserializer);
|
|
if (G_VALUE_HOLDS (value, G_TYPE_FILE))
|
|
{
|
|
if (uris[0] != NULL)
|
|
g_value_take_object (value, g_file_new_for_uri (uris[0]));
|
|
}
|
|
else
|
|
{
|
|
GSList *l = NULL;
|
|
gsize i;
|
|
|
|
for (i = 0; uris[i] != NULL; i++)
|
|
l = g_slist_prepend (l, g_file_new_for_uri (uris[i]));
|
|
|
|
g_value_take_boxed (value, g_slist_reverse (l));
|
|
}
|
|
g_strfreev (uris);
|
|
|
|
gdk_content_deserializer_return_success (deserializer);
|
|
}
|
|
|
|
static void
|
|
file_uri_deserializer (GdkContentDeserializer *deserializer)
|
|
{
|
|
GOutputStream *output;
|
|
|
|
output = g_memory_output_stream_new_resizable ();
|
|
|
|
g_output_stream_splice_async (output,
|
|
gdk_content_deserializer_get_input_stream (deserializer),
|
|
G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
|
|
gdk_content_deserializer_get_priority (deserializer),
|
|
gdk_content_deserializer_get_cancellable (deserializer),
|
|
file_uri_deserializer_finish,
|
|
deserializer);
|
|
g_object_unref (output);
|
|
}
|
|
|
|
static void
|
|
color_deserializer_finish (GObject *source,
|
|
GAsyncResult *result,
|
|
gpointer deserializer)
|
|
{
|
|
GOutputStream *stream = G_OUTPUT_STREAM (source);
|
|
GError *error = NULL;
|
|
gssize written;
|
|
|
|
written = g_output_stream_splice_finish (stream, result, &error);
|
|
if (written < 0)
|
|
{
|
|
gdk_content_deserializer_return_error (deserializer, error);
|
|
return;
|
|
}
|
|
else if (written == 0)
|
|
{
|
|
GdkRGBA black = GDK_RGBA ("000");
|
|
|
|
/* Never return NULL, we only return that on error */
|
|
g_value_set_boxed (gdk_content_deserializer_get_value (deserializer), &black);
|
|
}
|
|
else
|
|
{
|
|
guint16 *data;
|
|
GdkRGBA rgba;
|
|
|
|
data = (guint16 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (stream));
|
|
rgba.red = data[0] / 65535.0;
|
|
rgba.green = data[1] / 65535.0;
|
|
rgba.blue = data[2] / 65535.0;
|
|
rgba.alpha = data[3] / 65535.0;
|
|
|
|
g_value_set_boxed (gdk_content_deserializer_get_value (deserializer), &rgba);
|
|
}
|
|
gdk_content_deserializer_return_success (deserializer);
|
|
}
|
|
|
|
static void
|
|
color_deserializer (GdkContentDeserializer *deserializer)
|
|
{
|
|
GOutputStream *output;
|
|
guint16 *data;
|
|
|
|
data = g_new0 (guint16, 4);
|
|
output = g_memory_output_stream_new (data, 4 * sizeof (guint16), NULL, g_free);
|
|
|
|
g_output_stream_splice_async (output,
|
|
gdk_content_deserializer_get_input_stream (deserializer),
|
|
G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
|
|
gdk_content_deserializer_get_priority (deserializer),
|
|
gdk_content_deserializer_get_cancellable (deserializer),
|
|
color_deserializer_finish,
|
|
deserializer);
|
|
g_object_unref (output);
|
|
}
|
|
|
|
static void
|
|
init (void)
|
|
{
|
|
static gboolean initialized = FALSE;
|
|
GSList *formats, *f;
|
|
const char *charset;
|
|
|
|
if (initialized)
|
|
return;
|
|
|
|
initialized = TRUE;
|
|
|
|
formats = gdk_pixbuf_get_formats ();
|
|
|
|
/* Make sure png comes first */
|
|
for (f = formats; f; f = f->next)
|
|
{
|
|
GdkPixbufFormat *fmt = f->data;
|
|
char *name;
|
|
|
|
name = gdk_pixbuf_format_get_name (fmt);
|
|
if (g_str_equal (name, "png"))
|
|
{
|
|
formats = g_slist_delete_link (formats, f);
|
|
formats = g_slist_prepend (formats, fmt);
|
|
|
|
g_free (name);
|
|
|
|
break;
|
|
}
|
|
|
|
g_free (name);
|
|
}
|
|
|
|
for (f = formats; f; f = f->next)
|
|
{
|
|
GdkPixbufFormat *fmt = f->data;
|
|
char **mimes, **m;
|
|
|
|
mimes = gdk_pixbuf_format_get_mime_types (fmt);
|
|
for (m = mimes; *m; m++)
|
|
{
|
|
gdk_content_register_deserializer (*m,
|
|
GDK_TYPE_TEXTURE,
|
|
pixbuf_deserializer,
|
|
NULL,
|
|
NULL);
|
|
gdk_content_register_deserializer (*m,
|
|
GDK_TYPE_PIXBUF,
|
|
pixbuf_deserializer,
|
|
NULL,
|
|
NULL);
|
|
}
|
|
g_strfreev (mimes);
|
|
}
|
|
|
|
g_slist_free (formats);
|
|
|
|
#if defined(G_OS_UNIX) && !defined(__APPLE__)
|
|
file_transfer_portal_register ();
|
|
#endif
|
|
|
|
gdk_content_register_deserializer ("text/uri-list",
|
|
GDK_TYPE_FILE_LIST,
|
|
file_uri_deserializer,
|
|
NULL,
|
|
NULL);
|
|
|
|
gdk_content_register_deserializer ("text/uri-list",
|
|
G_TYPE_FILE,
|
|
file_uri_deserializer,
|
|
NULL,
|
|
NULL);
|
|
|
|
gdk_content_register_deserializer ("text/plain;charset=utf-8",
|
|
G_TYPE_STRING,
|
|
string_deserializer,
|
|
(gpointer) "utf-8",
|
|
NULL);
|
|
if (!g_get_charset (&charset))
|
|
{
|
|
char *mime = g_strdup_printf ("text/plain;charset=%s", charset);
|
|
gdk_content_register_deserializer (mime,
|
|
G_TYPE_STRING,
|
|
string_deserializer,
|
|
mime,
|
|
g_free);
|
|
}
|
|
gdk_content_register_deserializer ("text/plain",
|
|
G_TYPE_STRING,
|
|
string_deserializer,
|
|
(gpointer) "ASCII",
|
|
NULL);
|
|
|
|
gdk_content_register_deserializer ("application/x-color",
|
|
GDK_TYPE_RGBA,
|
|
color_deserializer,
|
|
NULL,
|
|
NULL);
|
|
}
|
|
|