mutter/src/backends/meta-barrier.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/**
* MetaBarrier:
*
* Pointer barriers
*/
#include "config.h"
#include "meta/barrier.h"
#include "backends/meta-barrier-private.h"
#include <glib-object.h>
#include "backends/x11/meta-backend-x11.h"
#include "backends/x11/meta-barrier-x11.h"
#include "meta/meta-enum-types.h"
#include "meta/util.h"
#ifdef HAVE_NATIVE_BACKEND
#include "backends/native/meta-backend-native.h"
#include "backends/native/meta-barrier-native.h"
#endif
typedef struct _MetaBarrierPrivate
{
MetaBackend *backend;
MetaBorder border;
MetaBarrierImpl *impl;
MetaBarrierFlags flags;
} MetaBarrierPrivate;
static void initable_iface_init (GInitableIface *initable_iface);
G_DEFINE_TYPE_WITH_CODE (MetaBarrier, meta_barrier, G_TYPE_OBJECT,
G_ADD_PRIVATE (MetaBarrier)
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
initable_iface_init))
G_DEFINE_TYPE (MetaBarrierImpl, meta_barrier_impl, G_TYPE_OBJECT)
G_STATIC_ASSERT ((int) META_BARRIER_DIRECTION_POSITIVE_X ==
(int) META_BORDER_MOTION_DIRECTION_POSITIVE_X);
G_STATIC_ASSERT ((int) META_BARRIER_DIRECTION_POSITIVE_Y ==
(int) META_BORDER_MOTION_DIRECTION_POSITIVE_Y);
G_STATIC_ASSERT ((int) META_BARRIER_DIRECTION_NEGATIVE_X ==
(int) META_BORDER_MOTION_DIRECTION_NEGATIVE_X);
G_STATIC_ASSERT ((int) META_BARRIER_DIRECTION_NEGATIVE_Y ==
(int) META_BORDER_MOTION_DIRECTION_NEGATIVE_Y);
enum
{
PROP_0,
PROP_BACKEND,
PROP_DISPLAY,
PROP_X1,
PROP_Y1,
PROP_X2,
PROP_Y2,
PROP_DIRECTIONS,
PROP_FLAGS,
PROP_LAST,
};
static GParamSpec *obj_props[PROP_LAST];
enum
{
HIT,
LEFT,
LAST_SIGNAL,
};
static guint obj_signals[LAST_SIGNAL];
static MetaBackend *
backend_from_display (MetaDisplay *display)
{
MetaContext *context = meta_display_get_context (display);
return meta_context_get_backend (context);
}
static MetaDisplay *
display_from_backend (MetaBackend *backend)
{
MetaContext *context = meta_backend_get_context (backend);
return meta_context_get_display (context);
}
static void
meta_barrier_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaBarrier *barrier = META_BARRIER (object);
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
switch (prop_id)
{
case PROP_BACKEND:
g_value_set_object (value, priv->backend);
break;
case PROP_DISPLAY:
g_value_set_object (value, display_from_backend (priv->backend));
break;
case PROP_X1:
g_value_set_int (value, priv->border.line.a.x);
break;
case PROP_Y1:
g_value_set_int (value, priv->border.line.a.y);
break;
case PROP_X2:
g_value_set_int (value, priv->border.line.b.x);
break;
case PROP_Y2:
g_value_set_int (value, priv->border.line.b.y);
break;
case PROP_DIRECTIONS:
g_value_set_flags (value,
meta_border_get_allows_directions (&priv->border));
break;
case PROP_FLAGS:
g_value_set_flags (value, priv->flags);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_barrier_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaBarrier *barrier = META_BARRIER (object);
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
switch (prop_id)
{
case PROP_BACKEND:
priv->backend = g_value_get_object (value);
break;
case PROP_DISPLAY:
{
MetaDisplay *display;
display = g_value_get_object (value);
if (display)
priv->backend = backend_from_display (g_value_get_object (value));
break;
}
case PROP_X1:
priv->border.line.a.x = g_value_get_int (value);
break;
case PROP_Y1:
priv->border.line.a.y = g_value_get_int (value);
break;
case PROP_X2:
priv->border.line.b.x = g_value_get_int (value);
break;
case PROP_Y2:
priv->border.line.b.y = g_value_get_int (value);
break;
case PROP_DIRECTIONS:
meta_border_set_allows_directions (&priv->border,
g_value_get_flags (value));
break;
case PROP_FLAGS:
priv->flags = g_value_get_flags (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_barrier_dispose (GObject *object)
{
MetaBarrier *barrier = META_BARRIER (object);
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
if (meta_barrier_is_active (barrier))
{
meta_bug ("MetaBarrier %p was destroyed while it was still active.",
barrier);
}
g_clear_object (&priv->impl);
G_OBJECT_CLASS (meta_barrier_parent_class)->dispose (object);
}
gboolean
meta_barrier_is_active (MetaBarrier *barrier)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
MetaBarrierImpl *impl = priv->impl;
if (impl)
return META_BARRIER_IMPL_GET_CLASS (impl)->is_active (impl);
else
return FALSE;
}
/**
* meta_barrier_release:
* @barrier: The barrier to release
* @event: The event to release the pointer for
*
* In XI2.3, pointer barriers provide a feature where they can
* be temporarily released so that the pointer goes through
* them. Pass a #MetaBarrierEvent to release the barrier for
* this event sequence.
*/
void
meta_barrier_release (MetaBarrier *barrier,
MetaBarrierEvent *event)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
MetaBarrierImpl *impl = priv->impl;
if (impl)
META_BARRIER_IMPL_GET_CLASS (impl)->release (impl, event);
}
static gboolean
meta_barrier_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaBarrier *barrier = META_BARRIER (initable);
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
priv = meta_barrier_get_instance_private (barrier);
if (!priv->impl)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to create barrier impl");
return FALSE;
}
return TRUE;
}
static void
initable_iface_init (GInitableIface *initable_iface)
{
initable_iface->init = meta_barrier_initable_init;
}
static void
init_barrier_impl (MetaBarrier *barrier)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
g_return_if_fail (priv->backend);
g_return_if_fail (priv->border.line.a.x == priv->border.line.b.x ||
priv->border.line.a.y == priv->border.line.b.y);
g_return_if_fail (priv->border.line.a.x >= 0);
g_return_if_fail (priv->border.line.a.y >= 0);
g_return_if_fail (priv->border.line.b.x >= 0);
g_return_if_fail (priv->border.line.b.y >= 0);
#if defined(HAVE_NATIVE_BACKEND)
if (META_IS_BACKEND_NATIVE (priv->backend))
priv->impl = meta_barrier_impl_native_new (barrier);
#endif
if (META_IS_BACKEND_X11 (priv->backend) &&
!meta_is_wayland_compositor ())
priv->impl = meta_barrier_impl_x11_new (barrier);
g_warn_if_fail (priv->impl);
}
static void
meta_barrier_constructed (GObject *object)
{
MetaBarrier *barrier = META_BARRIER (object);
init_barrier_impl (barrier);
/* Take a ref that we'll release in destroy() so that the object stays
* alive while active. */
g_object_ref (barrier);
G_OBJECT_CLASS (meta_barrier_parent_class)->constructed (object);
}
static void
meta_barrier_class_init (MetaBarrierClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = meta_barrier_get_property;
object_class->set_property = meta_barrier_set_property;
object_class->dispose = meta_barrier_dispose;
object_class->constructed = meta_barrier_constructed;
obj_props[PROP_BACKEND] =
g_param_spec_object ("backend", NULL, NULL,
META_TYPE_BACKEND,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_DISPLAY] =
g_param_spec_object ("display", NULL, NULL,
META_TYPE_DISPLAY,
G_PARAM_DEPRECATED |
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_X1] =
g_param_spec_int ("x1", NULL, NULL,
0, G_MAXSHORT, 0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_Y1] =
g_param_spec_int ("y1", NULL, NULL,
0, G_MAXSHORT, 0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_X2] =
g_param_spec_int ("x2", NULL, NULL,
0, G_MAXSHORT, G_MAXSHORT,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_Y2] =
g_param_spec_int ("y2", NULL, NULL,
0, G_MAXSHORT, G_MAXSHORT,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_DIRECTIONS] =
g_param_spec_flags ("directions", NULL, NULL,
META_TYPE_BARRIER_DIRECTION,
0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_props[PROP_FLAGS] =
g_param_spec_flags ("flags", NULL, NULL,
META_TYPE_BARRIER_FLAGS,
META_BARRIER_FLAG_NONE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
/**
* MetaBarrier::hit:
* @barrier: The #MetaBarrier that was hit
* @event: A #MetaBarrierEvent that has the details of how
* the barrier was hit.
*
* When a pointer barrier is hit, this will trigger. This
* requires an XI2-enabled server.
*/
obj_signals[HIT] =
g_signal_new ("hit",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1,
META_TYPE_BARRIER_EVENT);
/**
* MetaBarrier::left:
* @barrier: The #MetaBarrier that was left
* @event: A #MetaBarrierEvent that has the details of how
* the barrier was left.
*
* When a pointer barrier hitbox was left, this will trigger.
* This requires an XI2-enabled server.
*/
obj_signals[LEFT] =
g_signal_new ("left",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1,
META_TYPE_BARRIER_EVENT);
}
void
meta_barrier_destroy (MetaBarrier *barrier)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
MetaBarrierImpl *impl = priv->impl;
if (impl)
META_BARRIER_IMPL_GET_CLASS (impl)->destroy (impl);
g_object_unref (barrier);
}
static void
meta_barrier_init (MetaBarrier *barrier)
{
}
MetaBarrier *
meta_barrier_new (MetaBackend *backend,
int x1,
int y1,
int x2,
int y2,
MetaBarrierDirection directions,
MetaBarrierFlags flags,
GError **error)
{
return g_initable_new (META_TYPE_BARRIER,
NULL, error,
"backend", backend,
"x1", x1,
"y1", y1,
"x2", x2,
"y2", y2,
"directions", directions,
"flags", flags,
NULL);
}
void
meta_barrier_emit_hit_signal (MetaBarrier *barrier,
MetaBarrierEvent *event)
{
g_signal_emit (barrier, obj_signals[HIT], 0, event);
}
void
meta_barrier_emit_left_signal (MetaBarrier *barrier,
MetaBarrierEvent *event)
{
g_signal_emit (barrier, obj_signals[LEFT], 0, event);
}
MetaBackend *
meta_barrier_get_backend (MetaBarrier *barrier)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
return priv->backend;
}
MetaBorder *
meta_barrier_get_border (MetaBarrier *barrier)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
return &priv->border;
}
MetaBarrierFlags
meta_barrier_get_flags (MetaBarrier *barrier)
{
MetaBarrierPrivate *priv = meta_barrier_get_instance_private (barrier);
return priv->flags;
}
static void
meta_barrier_impl_class_init (MetaBarrierImplClass *klass)
{
}
static void
meta_barrier_impl_init (MetaBarrierImpl *impl)
{
}
static MetaBarrierEvent *
meta_barrier_event_ref (MetaBarrierEvent *event)
{
g_return_val_if_fail (event != NULL, NULL);
g_return_val_if_fail (event->ref_count > 0, NULL);
g_atomic_int_inc ((volatile int *)&event->ref_count);
return event;
}
void
meta_barrier_event_unref (MetaBarrierEvent *event)
{
g_return_if_fail (event != NULL);
g_return_if_fail (event->ref_count > 0);
if (g_atomic_int_dec_and_test ((volatile int *)&event->ref_count))
g_free (event);
}
G_DEFINE_BOXED_TYPE (MetaBarrierEvent,
meta_barrier_event,
meta_barrier_event_ref,
meta_barrier_event_unref)