core: Add memory-based selection source

This is a simple implementation of a MetaSelectionSource, able to hold a
single mimetype, provided as GBytes.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/320
This commit is contained in:
Carlos Garnacho 2018-11-19 19:50:21 +01:00
parent 37144f0609
commit 535ce00abb
3 changed files with 163 additions and 0 deletions

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@ -0,0 +1,125 @@
/*
* Copyright (C) 2018 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Author: Carlos Garnacho <carlosg@gnome.org>
*/
#include "config.h"
#include "core/meta-selection-source-memory.h"
struct _MetaSelectionSourceMemory
{
MetaSelectionSource parent_instance;
char *mimetype;
GBytes *content;
};
G_DEFINE_TYPE (MetaSelectionSourceMemory,
meta_selection_source_memory,
META_TYPE_SELECTION_SOURCE)
static void
meta_selection_source_memory_read_async (MetaSelectionSource *source,
const char *mimetype,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
MetaSelectionSourceMemory *source_mem = META_SELECTION_SOURCE_MEMORY (source);
GInputStream *stream;
GTask *task;
if (g_strcmp0 (mimetype, source_mem->mimetype) != 0)
{
g_task_report_new_error (source, callback, user_data,
meta_selection_source_memory_read_async,
G_IO_ERROR, G_IO_ERROR_FAILED,
"Mimetype not in selection");
return;
}
task = g_task_new (source, cancellable, callback, user_data);
g_task_set_source_tag (task, meta_selection_source_memory_read_async);
stream = g_memory_input_stream_new_from_bytes (source_mem->content);
g_task_return_pointer (task, stream, g_object_unref);
}
static GInputStream *
meta_selection_source_memory_read_finish (MetaSelectionSource *source,
GAsyncResult *result,
GError **error)
{
g_assert (g_task_get_source_tag (G_TASK (result)) ==
meta_selection_source_memory_read_async);
return g_task_propagate_pointer (G_TASK (result), error);
}
static GList *
meta_selection_source_memory_get_mimetypes (MetaSelectionSource *source)
{
MetaSelectionSourceMemory *source_mem = META_SELECTION_SOURCE_MEMORY (source);
return g_list_prepend (NULL, g_strdup (source_mem->mimetype));
}
static void
meta_selection_source_memory_finalize (GObject *object)
{
MetaSelectionSourceMemory *source_mem = META_SELECTION_SOURCE_MEMORY (object);
g_bytes_unref (source_mem->content);
g_free (source_mem->mimetype);
G_OBJECT_CLASS (meta_selection_source_memory_parent_class)->finalize (object);
}
static void
meta_selection_source_memory_class_init (MetaSelectionSourceMemoryClass *klass)
{
MetaSelectionSourceClass *source_class = META_SELECTION_SOURCE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_selection_source_memory_finalize;
source_class->read_async = meta_selection_source_memory_read_async;
source_class->read_finish = meta_selection_source_memory_read_finish;
source_class->get_mimetypes = meta_selection_source_memory_get_mimetypes;
}
static void
meta_selection_source_memory_init (MetaSelectionSourceMemory *source)
{
}
MetaSelectionSource *
meta_selection_source_memory_new (const char *mimetype,
GBytes *content)
{
MetaSelectionSourceMemory *source;
g_return_val_if_fail (mimetype != NULL, NULL);
g_return_val_if_fail (content != NULL, NULL);
source = g_object_new (META_TYPE_SELECTION_SOURCE_MEMORY, NULL);
source->mimetype = g_strdup (mimetype);
source->content = g_bytes_ref (content);
return META_SELECTION_SOURCE (source);
}

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/*
* Copyright (C) 2018 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Author: Carlos Garnacho <carlosg@gnome.org>
*/
#ifndef META_MEMORY_SELECTION_SOURCE_H
#define META_MEMORY_SELECTION_SOURCE_H
#include "core/meta-selection-source.h"
#define META_TYPE_SELECTION_SOURCE_MEMORY (meta_selection_source_memory_get_type ())
G_DECLARE_FINAL_TYPE (MetaSelectionSourceMemory,
meta_selection_source_memory,
META, SELECTION_SOURCE_MEMORY,
MetaSelectionSource)
MetaSelectionSource * meta_selection_source_memory_new (const char *mimetype,
GBytes *content);
#endif /* META_SELECTION_SOURCE_MEMORY_H */

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@ -344,6 +344,8 @@ mutter_sources = [
'core/meta-selection.h', 'core/meta-selection.h',
'core/meta-selection-source.c', 'core/meta-selection-source.c',
'core/meta-selection-source.h', 'core/meta-selection-source.h',
'core/meta-selection-source-memory.c',
'core/meta-selection-source-memory.h',
'core/meta-sound-player.c', 'core/meta-sound-player.c',
'core/meta-workspace-manager.c', 'core/meta-workspace-manager.c',
'core/meta-workspace-manager-private.h', 'core/meta-workspace-manager-private.h',