mutter/src/backends/x11/meta-barrier-x11.c
Jonas Ådahl 5f91a62f6f barriers: Separate implementation from public API
This patch removes the X11 specific code from MetaBarrier and creates an
abstraction layer MetaBarrierImpl. The existing X11 implementation is
moved to a new GObject MetaBarrierImplX11 implementing the abstract
interface MetaBarrierImpl which is instantiated by MetaBarrier when
supported.

While at it, move it to backends/ and properly name the files.

https://bugzilla.gnome.org/show_bug.cgi?id=706655
2015-01-17 17:22:57 -08:00

217 lines
5.7 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2014-2015 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:
* Jasper St. Pierre <jstpierre@mecheye.net>
* Jonas Ådahl <jadahl@gmail.com>
*/
/**
* SECTION:barrier-x11
* @Title: MetaBarrierImplX11
* @Short_Description: Pointer barriers implementation for X11
*/
#include "config.h"
#ifdef HAVE_XI23
#include <glib-object.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/Xfixes.h>
#include <meta/barrier.h>
#include "backends/x11/meta-barrier-x11.h"
#include "display-private.h"
struct _MetaBarrierImplX11Private
{
MetaBarrier *barrier;
PointerBarrier xbarrier;
};
G_DEFINE_TYPE_WITH_PRIVATE (MetaBarrierImplX11, meta_barrier_impl_x11,
META_TYPE_BARRIER_IMPL)
static gboolean
_meta_barrier_impl_x11_is_active (MetaBarrierImpl *impl)
{
MetaBarrierImplX11 *self = META_BARRIER_IMPL_X11 (impl);
MetaBarrierImplX11Private *priv =
meta_barrier_impl_x11_get_instance_private (self);
return priv->xbarrier != 0;
}
static void
_meta_barrier_impl_x11_release (MetaBarrierImpl *impl,
MetaBarrierEvent *event)
{
MetaBarrierImplX11 *self = META_BARRIER_IMPL_X11 (impl);
MetaBarrierImplX11Private *priv =
meta_barrier_impl_x11_get_instance_private (self);
MetaDisplay *display = priv->barrier->priv->display;
if (META_DISPLAY_HAS_XINPUT_23 (display))
{
XIBarrierReleasePointer (display->xdisplay,
META_VIRTUAL_CORE_POINTER_ID,
priv->xbarrier, event->event_id);
}
}
static void
_meta_barrier_impl_x11_destroy (MetaBarrierImpl *impl)
{
MetaBarrierImplX11 *self = META_BARRIER_IMPL_X11 (impl);
MetaBarrierImplX11Private *priv =
meta_barrier_impl_x11_get_instance_private (self);
MetaDisplay *display = priv->barrier->priv->display;
Display *dpy;
if (display == NULL)
return;
dpy = display->xdisplay;
if (!meta_barrier_is_active (priv->barrier))
return;
XFixesDestroyPointerBarrier (dpy, priv->xbarrier);
g_hash_table_remove (display->xids, &priv->xbarrier);
priv->xbarrier = 0;
}
MetaBarrierImpl *
meta_barrier_impl_x11_new (MetaBarrier *barrier)
{
MetaBarrierImplX11 *self;
MetaBarrierImplX11Private *priv;
MetaDisplay *display = barrier->priv->display;
Display *dpy;
Window root;
if (display == NULL)
{
g_warning ("A display must be provided when constructing a barrier.");
return NULL;
}
self = g_object_new (META_TYPE_BARRIER_IMPL_X11, NULL);
priv = meta_barrier_impl_x11_get_instance_private (self);
priv->barrier = barrier;
dpy = display->xdisplay;
root = DefaultRootWindow (dpy);
priv->xbarrier = XFixesCreatePointerBarrier (dpy, root,
barrier->priv->x1,
barrier->priv->y1,
barrier->priv->x2,
barrier->priv->y2,
barrier->priv->directions,
0, NULL);
g_hash_table_insert (display->xids, &priv->xbarrier, barrier);
return META_BARRIER_IMPL (self);
}
static void
meta_barrier_fire_xevent (MetaBarrier *barrier,
XIBarrierEvent *xevent)
{
MetaBarrierEvent *event = g_slice_new0 (MetaBarrierEvent);
event->ref_count = 1;
event->event_id = xevent->eventid;
event->time = xevent->time;
event->dt = xevent->dtime;
event->x = xevent->root_x;
event->y = xevent->root_y;
event->dx = xevent->dx;
event->dy = xevent->dy;
event->released = (xevent->flags & XIBarrierPointerReleased) != 0;
event->grabbed = (xevent->flags & XIBarrierDeviceIsGrabbed) != 0;
switch (xevent->evtype)
{
case XI_BarrierHit:
_meta_barrier_emit_hit_signal (barrier, event);
break;
case XI_BarrierLeave:
_meta_barrier_emit_left_signal (barrier, event);
break;
default:
g_assert_not_reached ();
}
meta_barrier_event_unref (event);
}
gboolean
meta_display_process_barrier_xevent (MetaDisplay *display,
XIEvent *event)
{
MetaBarrier *barrier;
XIBarrierEvent *xev;
if (event == NULL)
return FALSE;
switch (event->evtype)
{
case XI_BarrierHit:
case XI_BarrierLeave:
break;
default:
return FALSE;
}
xev = (XIBarrierEvent *) event;
barrier = g_hash_table_lookup (display->xids, &xev->barrier);
if (barrier != NULL)
{
meta_barrier_fire_xevent (barrier, xev);
return TRUE;
}
return FALSE;
}
static void
meta_barrier_impl_x11_class_init (MetaBarrierImplX11Class *klass)
{
MetaBarrierImplClass *impl_class = META_BARRIER_IMPL_CLASS (klass);
impl_class->is_active = _meta_barrier_impl_x11_is_active;
impl_class->release = _meta_barrier_impl_x11_release;
impl_class->destroy = _meta_barrier_impl_x11_destroy;
}
static void
meta_barrier_impl_x11_init (MetaBarrierImplX11 *self)
{
}
#endif /* HAVE_XI23 */