wayland: Add wayland MetaSelectionSource implementation
This object represents a Wayland selection owner. In order to invert the FD direction (we hand an output fd, but want an inpu fd), create an intermediate pipe so we can then create a GInputStream on top of it. https://gitlab.gnome.org/GNOME/mutter/merge_requests/320
This commit is contained in:
Carlos Garnacho
parent
c95db7c542
commit
09aa82db49
@ -454,6 +454,8 @@ if have_wayland
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'wayland/meta-pointer-confinement-wayland.h',
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'wayland/meta-pointer-lock-wayland.c',
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'wayland/meta-pointer-lock-wayland.h',
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'wayland/meta-selection-source-wayland.c',
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'wayland/meta-selection-source-wayland-private.h',
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'wayland/meta-wayland-actor-surface.c',
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'wayland/meta-wayland-actor-surface.h',
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'wayland/meta-wayland-buffer.c',
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46
src/wayland/meta-selection-source-wayland-private.h
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46
src/wayland/meta-selection-source-wayland-private.h
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@ -0,0 +1,46 @@
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/*
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* Copyright (C) 2018 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Author: Carlos Garnacho <carlosg@gnome.org>
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*/
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#ifndef META_SELECTION_SOURCE_WAYLAND_H
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#define META_SELECTION_SOURCE_WAYLAND_H
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#include <wayland-server.h>
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#include "core/meta-selection-source.h"
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#define META_TYPE_SELECTION_SOURCE_WAYLAND (meta_selection_source_wayland_get_type ())
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G_DECLARE_FINAL_TYPE (MetaSelectionSourceWayland,
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meta_selection_source_wayland,
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META, SELECTION_SOURCE_WAYLAND,
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MetaSelectionSource)
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typedef void (* MetaWaylandSendFunc) (struct wl_resource *resource,
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const char *mimetype,
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int fd);
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typedef void (* MetaWaylandCancelFunc) (struct wl_resource *resource);
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MetaSelectionSource * meta_selection_source_wayland_new (struct wl_resource *resource,
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GList *mime_types,
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MetaWaylandSendFunc send_func,
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MetaWaylandCancelFunc cancel_func);
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#endif /* META_SELECTION_SOURCE_WAYLAND_H */
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162
src/wayland/meta-selection-source-wayland.c
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162
src/wayland/meta-selection-source-wayland.c
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@ -0,0 +1,162 @@
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/*
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* Copyright (C) 2018 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Author: Carlos Garnacho <carlosg@gnome.org>
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*/
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#include "config.h"
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#include <glib-unix.h>
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#include <gio/gunixinputstream.h>
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#include "wayland/meta-selection-source-wayland-private.h"
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struct _MetaSelectionSourceWayland
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{
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MetaSelectionSource parent_instance;
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GList *mimetypes;
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MetaWaylandSendFunc send_func;
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MetaWaylandCancelFunc cancel_func;
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struct wl_resource *resource;
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};
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G_DEFINE_TYPE (MetaSelectionSourceWayland, meta_selection_source_wayland,
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META_TYPE_SELECTION_SOURCE)
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static void
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meta_selection_source_wayland_finalize (GObject *object)
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{
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MetaSelectionSourceWayland *source_wayland = META_SELECTION_SOURCE_WAYLAND (object);
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g_list_free_full (source_wayland->mimetypes, g_free);
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G_OBJECT_CLASS (meta_selection_source_wayland_parent_class)->finalize (object);
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}
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static void
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meta_selection_source_wayland_read_async (MetaSelectionSource *source,
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const gchar *mimetype,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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MetaSelectionSourceWayland *source_wayland = META_SELECTION_SOURCE_WAYLAND (source);
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GInputStream *stream;
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GTask *task;
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int pipe_fds[2];
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if (!g_unix_open_pipe (pipe_fds, FD_CLOEXEC, NULL))
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{
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g_task_report_new_error (source, callback, user_data,
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meta_selection_source_wayland_read_async,
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G_IO_ERROR, G_IO_ERROR_FAILED,
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"Could not open pipe to read wayland selection");
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return;
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}
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if (!g_unix_set_fd_nonblocking (pipe_fds[0], TRUE, NULL) ||
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!g_unix_set_fd_nonblocking (pipe_fds[1], TRUE, NULL))
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{
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g_task_report_new_error (source, callback, user_data,
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meta_selection_source_wayland_read_async,
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G_IO_ERROR, G_IO_ERROR_FAILED,
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"Could not make pipe nonblocking");
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close (pipe_fds[0]);
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close (pipe_fds[1]);
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return;
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}
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task = g_task_new (source, cancellable, callback, user_data);
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g_task_set_source_tag (task, meta_selection_source_wayland_read_async);
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stream = g_unix_input_stream_new (pipe_fds[0], TRUE);
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source_wayland->send_func (source_wayland->resource, mimetype, pipe_fds[1]);
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close (pipe_fds[1]);
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g_task_return_pointer (task, stream, g_object_unref);
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g_object_unref (task);
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}
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static GInputStream *
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meta_selection_source_wayland_read_finish (MetaSelectionSource *source,
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GAsyncResult *result,
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GError **error)
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{
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g_return_val_if_fail (g_task_is_valid (result, source), FALSE);
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g_return_val_if_fail (g_task_get_source_tag (G_TASK (result)) ==
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meta_selection_source_wayland_read_async, FALSE);
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return g_task_propagate_pointer (G_TASK (result), error);
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}
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static GList *
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meta_selection_source_wayland_get_mimetypes (MetaSelectionSource *source)
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{
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MetaSelectionSourceWayland *source_wayland = META_SELECTION_SOURCE_WAYLAND (source);
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return g_list_copy_deep (source_wayland->mimetypes,
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(GCopyFunc) g_strdup, NULL);
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}
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static void
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meta_selection_source_wayland_deactivated (MetaSelectionSource *source)
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{
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MetaSelectionSourceWayland *source_wayland =
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META_SELECTION_SOURCE_WAYLAND (source);
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source_wayland->cancel_func (source_wayland->resource);
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META_SELECTION_SOURCE_CLASS (meta_selection_source_wayland_parent_class)->deactivated (source);
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}
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static void
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meta_selection_source_wayland_class_init (MetaSelectionSourceWaylandClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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MetaSelectionSourceClass *source_class = META_SELECTION_SOURCE_CLASS (klass);
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object_class->finalize = meta_selection_source_wayland_finalize;
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source_class->deactivated = meta_selection_source_wayland_deactivated;
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source_class->read_async = meta_selection_source_wayland_read_async;
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source_class->read_finish = meta_selection_source_wayland_read_finish;
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source_class->get_mimetypes = meta_selection_source_wayland_get_mimetypes;
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}
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static void
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meta_selection_source_wayland_init (MetaSelectionSourceWayland *source)
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{
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}
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MetaSelectionSource *
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meta_selection_source_wayland_new (struct wl_resource *resource,
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GList *mime_types,
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MetaWaylandSendFunc send_func,
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MetaWaylandCancelFunc cancel_func)
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{
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MetaSelectionSourceWayland *source_wayland;
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source_wayland = g_object_new (META_TYPE_SELECTION_SOURCE_WAYLAND, NULL);
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source_wayland->mimetypes = g_list_copy_deep (mime_types,
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(GCopyFunc) g_strdup, NULL);
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source_wayland->send_func = send_func;
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source_wayland->cancel_func = cancel_func;
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source_wayland->resource = resource;
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return META_SELECTION_SOURCE (source_wayland);
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}
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