Commit 25c38958 authored by Benjamin Otte's avatar Benjamin Otte
Browse files

clipboard: Add serialization

This completes the local clipboard code.
parent 12ca641f
......@@ -36,6 +36,7 @@
#include <gdk/gdkcontentformats.h>
#include <gdk/gdkcontentprovider.h>
#include <gdk/gdkcontentproviderimpl.h>
#include <gdk/gdkcontentserializer.h>
#include <gdk/gdkcursor.h>
#include <gdk/gdkdevice.h>
#include <gdk/gdkdevicepad.h>
......
......@@ -24,6 +24,7 @@
#include "gdkcontentformats.h"
#include "gdkcontentproviderimpl.h"
#include "gdkcontentproviderprivate.h"
#include "gdkcontentserializer.h"
#include "gdkdisplay.h"
#include "gdkintl.h"
#include "gdkpipeiostreamprivate.h"
......@@ -164,14 +165,10 @@ gdk_clipboard_read_local_async (GdkClipboard *clipboard,
}
content_formats = gdk_content_provider_ref_formats (priv->content);
content_formats = gdk_content_formats_union_serialize_mime_types (content_formats);
if (!gdk_content_formats_match (content_formats, formats, NULL, &mime_type)
|| mime_type == NULL)
{
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("No compatible formats to transfer clipboard contents."));
}
else
if (gdk_content_formats_match (content_formats, formats, NULL, &mime_type)
&& mime_type != NULL)
{
GOutputStream *output_stream;
GIOStream *stream;
......@@ -190,6 +187,11 @@ gdk_clipboard_read_local_async (GdkClipboard *clipboard,
g_object_unref (stream);
}
else
{
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("No compatible formats to transfer clipboard contents."));
}
gdk_content_formats_unref (content_formats);
g_object_unref (task);
......@@ -826,6 +828,20 @@ gdk_clipboard_write_done (GObject *content,
g_object_unref (task);
}
static void
gdk_clipboard_write_serialize_done (GObject *content,
GAsyncResult *result,
gpointer task)
{
GError *error = NULL;
if (gdk_content_serialize_finish (result, &error))
g_task_return_boolean (task, TRUE);
else
g_task_return_error (task, error);
g_object_unref (task);
}
void
gdk_clipboard_write_async (GdkClipboard *clipboard,
const char *mime_type,
......@@ -836,8 +852,9 @@ gdk_clipboard_write_async (GdkClipboard *clipboard,
gpointer user_data)
{
GdkClipboardPrivate *priv = gdk_clipboard_get_instance_private (clipboard);
GdkContentFormats *formats;
GdkContentFormats *formats, *mime_formats;
GTask *task;
GType gtype;
g_return_if_fail (GDK_IS_CLIPBOARD (clipboard));
g_return_if_fail (priv->local);
......@@ -873,11 +890,42 @@ gdk_clipboard_write_async (GdkClipboard *clipboard,
return;
}
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("FIXME: Implement serializing."));
mime_formats = gdk_content_formats_new ((const gchar *[2]) { mime_type, NULL }, 1);
mime_formats = gdk_content_formats_union_serialize_gtypes (mime_formats);
if (gdk_content_formats_match (mime_formats, formats, &gtype, NULL))
{
GValue value = G_VALUE_INIT;
GError *error = NULL;
g_assert (gtype != G_TYPE_INVALID);
g_value_init (&value, gtype);
if (gdk_content_provider_get_value (priv->content, &value, &error))
{
gdk_content_serialize_async (stream,
mime_type,
&value,
io_priority,
cancellable,
gdk_clipboard_write_serialize_done,
g_object_ref (task));
}
else
{
g_task_return_error (task, error);
}
g_value_unset (&value);
}
else
{
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("No compatible formats to transfer clipboard contents."));
}
gdk_content_formats_unref (mime_formats);
gdk_content_formats_unref (formats);
g_object_unref (task);
return;
}
gboolean
......@@ -954,6 +1002,7 @@ gdk_clipboard_content_changed_cb (GdkContentProvider *provider,
GdkContentFormats *formats;
formats = gdk_content_provider_ref_formats (provider);
formats = gdk_content_formats_union_serialize_mime_types (formats);
gdk_clipboard_claim (clipboard, formats, TRUE, provider);
......@@ -1000,6 +1049,7 @@ gdk_clipboard_set_content (GdkClipboard *clipboard,
return;
formats = gdk_content_provider_ref_formats (provider);
formats = gdk_content_formats_union_serialize_mime_types (formats);
}
else
{
......
/* GTK - The GIMP Toolkit
* Copyright (C) 2017 Benjamin Otte
*
* 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 <gio/gio.h>
#include "gdkcontentserializer.h"
#include "gdkcontentformats.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <string.h>
typedef struct _Serializer Serializer;
struct _Serializer
{
const char * mime_type; /* interned */
GType type;
GdkContentSerializeFunc serialize;
gpointer data;
GDestroyNotify notify;
};
GQueue serializers = G_QUEUE_INIT;
static void init (void);
#define GDK_CONTENT_SERIALIZER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_CONTENT_SERIALIZER, GdkContentSerializerClass))
#define GDK_IS_CONTENT_SERIALIZER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_CONTENT_SERIALIZER))
#define GDK_CONTENT_SERIALIZER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_CONTENT_SERIALIZER, GdkContentSerializerClass))
typedef struct _GdkContentSerializerClass GdkContentSerializerClass;
struct _GdkContentSerializer
{
GObject parent_instance;
const char *mime_type; /* interned */
GValue value;
GOutputStream *stream;
int priority;
GCancellable *cancellable;
gpointer user_data;
GAsyncReadyCallback callback;
gpointer callback_data;
GError *error;
gboolean returned;
};
struct _GdkContentSerializerClass
{
GObjectClass parent_class;
};
static gpointer
gdk_content_serializer_async_result_get_user_data (GAsyncResult *res)
{
return GDK_CONTENT_SERIALIZER (res)->callback_data;
}
static GObject *
gdk_content_serializer_async_result_get_source_object (GAsyncResult *res)
{
return NULL;
}
static void
gdk_content_serializer_async_result_iface_init (GAsyncResultIface *iface)
{
iface->get_user_data = gdk_content_serializer_async_result_get_user_data;
iface->get_source_object = gdk_content_serializer_async_result_get_source_object;
}
G_DEFINE_TYPE_WITH_CODE (GdkContentSerializer, gdk_content_serializer, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_RESULT, gdk_content_serializer_async_result_iface_init))
static void
gdk_content_serializer_finalize (GObject *object)
{
GdkContentSerializer *serializer = GDK_CONTENT_SERIALIZER (object);
g_value_unset (&serializer->value);
g_clear_object (&serializer->stream);
g_clear_object (&serializer->cancellable);
g_clear_error (&serializer->error);
G_OBJECT_CLASS (gdk_content_serializer_parent_class)->finalize (object);
}
static void
gdk_content_serializer_class_init (GdkContentSerializerClass *content_serializer_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (content_serializer_class);
object_class->finalize = gdk_content_serializer_finalize;
}
static void
gdk_content_serializer_init (GdkContentSerializer *content_serializer)
{
}
static void
gdk_content_serializer_run (const char *mime_type,
const GValue *value,
GOutputStream *stream,
int priority,
GCancellable *cancellable,
GdkContentSerializeFunc serialize_func,
gpointer user_data,
GAsyncReadyCallback callback,
gpointer callback_data)
{
GdkContentSerializer *serializer;
serializer = g_object_new (GDK_TYPE_CONTENT_SERIALIZER, NULL);
serializer->mime_type = mime_type;
g_value_init (&serializer->value, G_VALUE_TYPE (value));
g_value_copy (value, &serializer->value);
serializer->stream = g_object_ref (stream);
serializer->priority = priority;
if (cancellable)
serializer->cancellable = g_object_ref (cancellable);
serializer->user_data = user_data;
serializer->callback = callback;
serializer->callback_data = callback_data;
serialize_func (serializer);
}
const char *
gdk_content_serializer_get_mime_type (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), NULL);
return serializer->mime_type;
}
GType
gdk_content_serializer_get_gtype (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), G_TYPE_INVALID);
return G_VALUE_TYPE (&serializer->value);
}
const GValue *
gdk_content_serializer_get_value (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), NULL);
return &serializer->value;
}
GOutputStream *
gdk_content_serializer_get_output_stream (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), NULL);
return serializer->stream;
}
int
gdk_content_serializer_get_priority (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), G_PRIORITY_DEFAULT);
return serializer->priority;
}
GCancellable *
gdk_content_serializer_get_cancellable (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), NULL);
return serializer->cancellable;
}
gpointer
gdk_content_serializer_get_user_data (GdkContentSerializer *serializer)
{
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer), NULL);
return serializer->user_data;
}
static gboolean
gdk_content_serializer_emit_callback (gpointer data)
{
GdkContentSerializer *serializer = data;
if (serializer->callback)
{
serializer->callback (NULL, G_ASYNC_RESULT (serializer), serializer->callback_data);
}
return G_SOURCE_REMOVE;
}
void
gdk_content_serializer_return_success (GdkContentSerializer *serializer)
{
g_return_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer));
g_return_if_fail (!serializer->returned);
serializer->returned = TRUE;
g_idle_add_full (serializer->priority,
gdk_content_serializer_emit_callback,
serializer,
g_object_unref);
/* NB: the idle will destroy our reference */
}
void
gdk_content_serializer_return_error (GdkContentSerializer *serializer,
GError *error)
{
g_return_if_fail (GDK_IS_CONTENT_SERIALIZER (serializer));
g_return_if_fail (!serializer->returned);
g_return_if_fail (error != NULL);
serializer->error = error;
/* FIXME: naming */
gdk_content_serializer_return_success (serializer);
}
void
gdk_content_register_serializer (GType type,
const char *mime_type,
GdkContentSerializeFunc serialize,
gpointer data,
GDestroyNotify notify)
{
Serializer *serializer;
g_return_if_fail (mime_type != NULL);
g_return_if_fail (serialize != NULL);
init ();
serializer = g_slice_new0 (Serializer);
serializer->mime_type = g_intern_string (mime_type);
serializer->type = type;
serializer->serialize = serialize;
serializer->data = data;
serializer->notify = notify;
g_queue_push_tail (&serializers, serializer);
}
static Serializer *
lookup_serializer (const char *mime_type,
GType type)
{
GList *l;
g_return_val_if_fail (mime_type != NULL, NULL);
init ();
mime_type = g_intern_string (mime_type);
for (l = g_queue_peek_head_link (&serializers); l; l = l->next)
{
Serializer *serializer = l->data;
if (serializer->mime_type == mime_type &&
serializer->type == type)
return serializer;
}
return NULL;
}
GdkContentFormats *
gdk_content_formats_union_serialize_gtypes (GdkContentFormats *formats)
{
GdkContentFormatsBuilder *builder;
GList *l;
g_return_val_if_fail (formats != NULL, NULL);
init ();
builder = gdk_content_formats_builder_new ();
gdk_content_formats_builder_add_formats (builder, formats);
for (l = g_queue_peek_head_link (&serializers); l; l = l->next)
{
Serializer *serializer = l->data;
if (gdk_content_formats_contain_mime_type (formats, serializer->mime_type))
gdk_content_formats_builder_add_gtype (builder, serializer->type);
}
gdk_content_formats_unref (formats);
return gdk_content_formats_builder_free (builder);
}
GdkContentFormats *
gdk_content_formats_union_serialize_mime_types (GdkContentFormats *formats)
{
GdkContentFormatsBuilder *builder;
GList *l;
g_return_val_if_fail (formats != NULL, NULL);
init ();
builder = gdk_content_formats_builder_new ();
gdk_content_formats_builder_add_formats (builder, formats);
for (l = g_queue_peek_head_link (&serializers); l; l = l->next)
{
Serializer *serializer = l->data;
if (gdk_content_formats_contain_gtype (formats, serializer->type))
gdk_content_formats_builder_add_mime_type (builder, serializer->mime_type);
}
gdk_content_formats_unref (formats);
return gdk_content_formats_builder_free (builder);
}
static void
serialize_not_found (GdkContentSerializer *serializer)
{
GError *error = g_error_new (G_IO_ERROR,
G_IO_ERROR_NOT_FOUND,
"Could not convert data from %s to %s",
g_type_name (gdk_content_serializer_get_gtype (serializer)),
gdk_content_serializer_get_mime_type (serializer));
gdk_content_serializer_return_error (serializer, error);
}
void
gdk_content_serialize_async (GOutputStream *stream,
const char *mime_type,
const GValue *value,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
Serializer *serializer;
g_return_if_fail (G_IS_OUTPUT_STREAM (stream));
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
g_return_if_fail (callback != NULL);
serializer = lookup_serializer (mime_type, G_VALUE_TYPE (value));
gdk_content_serializer_run (mime_type,
value,
stream,
io_priority,
cancellable,
serializer ? serializer->serialize : serialize_not_found,
serializer ? serializer->data : NULL,
callback,
user_data);
}
gboolean
gdk_content_serialize_finish (GAsyncResult *result,
GError **error)
{
GdkContentSerializer *serializer;
g_return_val_if_fail (GDK_IS_CONTENT_SERIALIZER (result), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
serializer = GDK_CONTENT_SERIALIZER (result);
if (serializer->error)
{
if (error)
*error = g_error_copy (serializer->error);
return FALSE;
}
return TRUE;
}
/*** SERIALIZERS ***/
static void
pixbuf_serializer_finish (GObject *source,
GAsyncResult *res,
gpointer serializer)
{
GError *error = NULL;
if (!gdk_pixbuf_save_to_stream_finish (res, &error))
gdk_content_serializer_return_error (serializer, error);
else
gdk_content_serializer_return_success (serializer);
}
static void
pixbuf_serializer (GdkContentSerializer *serializer)
{
const char *name = gdk_content_serializer_get_user_data (serializer);
gdk_pixbuf_save_to_stream_async (g_value_get_object (gdk_content_serializer_get_value (serializer)),
gdk_content_serializer_get_output_stream (serializer),
name,
gdk_content_serializer_get_cancellable (serializer),
pixbuf_serializer_finish,
serializer,
g_str_equal (name, "png") ? "compression" : NULL, "2",
NULL);
}
static void
string_serializer_finish (GObject *source,
GAsyncResult *result,
gpointer serializer)
{
GOutputStream *stream = G_OUTPUT_STREAM (source);
GError *error = NULL;
if (!g_output_stream_write_all_finish (stream, result, NULL, &error))
gdk_content_serializer_return_error (serializer, error);
else
gdk_content_serializer_return_success (serializer);
}
static void
string_serializer (GdkContentSerializer *serializer)
{
GOutputStream *filter;
GCharsetConverter *converter;
GError *error = NULL;
const char *text;
converter = g_charset_converter_new (gdk_content_serializer_get_user_data (serializer),
"utf-8",
&error);
if (converter == NULL)
{
gdk_content_serializer_return_error (serializer, error);
return;
}
g_charset_converter_set_use_fallback (converter, TRUE);
filter = g_converter_output_stream_new (gdk_content_serializer_get_output_stream (serializer),
G_CONVERTER (converter));
g_object_unref (converter);
text = g_value_get_string (gdk_content_serializer_get_value (serializer));
if (text == NULL)
text = "";
g_output_stream_write_all_async (filter,
text,
strlen (text) + 1,
gdk_content_serializer_get_priority (serializer),
gdk_content_serializer_get_cancellable (serializer),
string_serializer_finish,
serializer);
g_object_unref (filter);
}
static void
init (void)
{
static gboolean initialized = FALSE;
GSList *formats, *f;
const char *charset;
if (initialized)