mutter-performance-source/src/wayland/meta-pointer-lock-wayland.c

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */

/*
 * Copyright (C) 2015 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.
 *
 * Written by:
 *     Jonas Ådahl <jadahl@gmail.com>
 */

/**
 * SECTION:meta-pointer-lock-wayland
 * @title: MetaPointerLockWayland
 * @short_description: A #MetaPointerConstraint implementing pointer lock.
 *
 * A MetaPointerLockConstraint implements the client pointer constraint "pointer
 * lock": the cursor should not make any movement.
 */

#include "config.h"

#include "wayland/meta-pointer-lock-wayland.h"

#include <glib-object.h>

#include "backends/meta-pointer-constraint.h"

struct _MetaPointerLockWayland
{
  MetaPointerConstraint parent;
};

G_DEFINE_TYPE (MetaPointerLockWayland, meta_pointer_lock_wayland,
               META_TYPE_POINTER_CONSTRAINT);

static void
meta_pointer_lock_wayland_constrain (MetaPointerConstraint *constraint,
                                     ClutterInputDevice    *device,
                                     guint32                time,
                                     float                  prev_x,
                                     float                  prev_y,
                                     float                 *x,
                                     float                 *y)
{
  *x = prev_x;
  *y = prev_y;
}

MetaPointerConstraint *
meta_pointer_lock_wayland_new (void)
{
  return g_object_new (META_TYPE_POINTER_LOCK_WAYLAND, NULL);
}

static void
meta_pointer_lock_wayland_init (MetaPointerLockWayland *lock_wayland)
{
}

static void
meta_pointer_lock_wayland_class_init (MetaPointerLockWaylandClass *klass)
{
  MetaPointerConstraintClass *pointer_constraint_class =
    META_POINTER_CONSTRAINT_CLASS (klass);

  pointer_constraint_class->constrain = meta_pointer_lock_wayland_constrain;
}