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rendernode: Add (de)serialization support for render nodes

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This includes our own new mime type for render nodes, too.
This commit is contained in:
Benjamin Otte 2021-08-20 00:30:04 +02:00
parent 1957915940
commit 0b7a36ce33
1 changed files with 111 additions and 0 deletions
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111
gsk/gskrendernodeimpl.c
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@ -5721,6 +5721,116 @@ gsk_render_node_init_types_once (void)
gsk_render_node_types[GSK_DEBUG_NODE] = node_type;
}
}
static void
gsk_render_node_content_serializer_finish (GObject *source,
GAsyncResult *result,
gpointer serializer)
{
GOutputStream *stream = G_OUTPUT_STREAM (source);
GError *error = NULL;
if (!g_output_stream_write_bytes_finish (stream, result, &error))
gdk_content_serializer_return_error (serializer, error);
else
gdk_content_serializer_return_success (serializer);
}
static void
gsk_render_node_content_serializer (GdkContentSerializer *serializer)
{
const GValue *value;
GskRenderNode *node;
GBytes *bytes;
value = gdk_content_serializer_get_value (serializer);
node = gsk_value_get_render_node (value);
bytes = gsk_render_node_serialize (node);
g_output_stream_write_bytes_async (gdk_content_serializer_get_output_stream (serializer),
bytes,
gdk_content_serializer_get_priority (serializer),
gdk_content_serializer_get_cancellable (serializer),
gsk_render_node_content_serializer_finish,
serializer);
g_bytes_unref (bytes);
}
static void
gsk_render_node_content_deserializer_finish (GObject *source,
GAsyncResult *result,
gpointer deserializer)
{
GOutputStream *stream = G_OUTPUT_STREAM (source);
GError *error = NULL;
gssize written;
GValue *value;
GskRenderNode *node;
GBytes *bytes;
written = g_output_stream_splice_finish (stream, result, &error);
if (written < 0)
{
gdk_content_deserializer_return_error (deserializer, error);
return;
}
bytes = g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (stream));
/* For now, we ignore any parsing errors. We might want to revisit that if it turns
* out copy/paste leads to too many errors */
node = gsk_render_node_deserialize (bytes, NULL, NULL);
value = gdk_content_deserializer_get_value (deserializer);
gsk_value_take_render_node (value, node);
gdk_content_deserializer_return_success (deserializer);
}
static void
gsk_render_node_content_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),
gsk_render_node_content_deserializer_finish,
deserializer);
g_object_unref (output);
}
static void
gsk_render_node_init_content_serializers (void)
{
gdk_content_register_serializer (GSK_TYPE_RENDER_NODE,
"application/x-gtk-render-node",
gsk_render_node_content_serializer,
NULL,
NULL);
gdk_content_register_serializer (GSK_TYPE_RENDER_NODE,
"text/plain;charset=utf-8",
gsk_render_node_content_serializer,
NULL,
NULL);
/* The serialization format only outputs ASCII, so we can do this */
gdk_content_register_serializer (GSK_TYPE_RENDER_NODE,
"text/plain",
gsk_render_node_content_serializer,
NULL,
NULL);
gdk_content_register_deserializer ("application/x-gtk-render-node",
GSK_TYPE_RENDER_NODE,
gsk_render_node_content_deserializer,
NULL,
NULL);
}
/*< private >
* gsk_render_node_init_types:
*
@ -5735,6 +5845,7 @@ gsk_render_node_init_types (void)
{
gboolean initialized = TRUE;
gsk_render_node_init_types_once ();
gsk_render_node_init_content_serializers ();
g_once_init_leave (&register_types__volatile, initialized);
}
}