/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ #include "config.h" #include #include #include #include #include #include "display-private.h" #include "mutter-enum-types.h" #include "core.h" G_DEFINE_TYPE (MetaBarrier, meta_barrier, G_TYPE_OBJECT) enum { PROP_0, PROP_DISPLAY, PROP_X1, PROP_Y1, PROP_X2, PROP_Y2, PROP_DIRECTIONS, PROP_LAST, }; static GParamSpec *obj_props[PROP_LAST]; enum { HIT, LEFT, LAST_SIGNAL, }; static guint obj_signals[LAST_SIGNAL]; struct _MetaBarrierPrivate { MetaDisplay *display; int x1; int y1; int x2; int y2; MetaBarrierDirection directions; PointerBarrier xbarrier; }; static void meta_barrier_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MetaBarrier *barrier = META_BARRIER (object); MetaBarrierPrivate *priv = barrier->priv; switch (prop_id) { case PROP_DISPLAY: g_value_set_object (value, priv->display); break; case PROP_X1: g_value_set_int (value, priv->x1); break; case PROP_Y1: g_value_set_int (value, priv->y1); break; case PROP_X2: g_value_set_int (value, priv->x2); break; case PROP_Y2: g_value_set_int (value, priv->y2); break; case PROP_DIRECTIONS: g_value_set_flags (value, priv->directions); 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 = barrier->priv; switch (prop_id) { case PROP_DISPLAY: priv->display = g_value_get_object (value); break; case PROP_X1: priv->x1 = g_value_get_int (value); break; case PROP_Y1: priv->y1 = g_value_get_int (value); break; case PROP_X2: priv->x2 = g_value_get_int (value); break; case PROP_Y2: priv->y2 = g_value_get_int (value); break; case PROP_DIRECTIONS: priv->directions = 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 = barrier->priv; if (meta_barrier_is_active (barrier)) { meta_bug ("MetaBarrier wrapper %p for X barrier %ld was destroyed" " while the X barrier is still active.", barrier, priv->xbarrier); } G_OBJECT_CLASS (meta_barrier_parent_class)->dispose (object); } gboolean meta_barrier_is_active (MetaBarrier *barrier) { return barrier->priv->xbarrier != 0; } /** * 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) { #ifdef HAVE_XI23 MetaBarrierPrivate *priv = barrier->priv; if (META_DISPLAY_HAS_XINPUT_23 (priv->display)) { XIBarrierReleasePointer (priv->display->xdisplay, META_VIRTUAL_CORE_POINTER_ID, priv->xbarrier, event->event_id); } #endif /* HAVE_XI23 */ } static void meta_barrier_constructed (GObject *object) { MetaBarrier *barrier = META_BARRIER (object); MetaBarrierPrivate *priv = barrier->priv; Display *dpy; Window root; g_return_if_fail (priv->x1 == priv->x2 || priv->y1 == priv->y2); if (priv->display == NULL) { g_warning ("A display must be provided when constructing a barrier."); return; } dpy = priv->display->xdisplay; root = DefaultRootWindow (dpy); priv->xbarrier = XFixesCreatePointerBarrier (dpy, root, priv->x1, priv->y1, priv->x2, priv->y2, priv->directions, 0, NULL); /* Take a ref that we'll release when the XID dies inside destroy(), * so that the object stays alive and doesn't get GC'd. */ g_object_ref (barrier); g_hash_table_insert (priv->display->xids, &priv->xbarrier, 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_DISPLAY] = g_param_spec_object ("display", "Display", "The display to construct the pointer barrier on", META_TYPE_DISPLAY, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_props[PROP_X1] = g_param_spec_int ("x1", "X1", "The first X coordinate of the barrier", 0, G_MAXSHORT, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_props[PROP_Y1] = g_param_spec_int ("y1", "Y1", "The first Y coordinate of the barrier", 0, G_MAXSHORT, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); obj_props[PROP_X2] = g_param_spec_int ("x2", "X2", "The second X coordinate of the barrier", 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", "Y2", "The second Y coordinate of the barrier", 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", "Directions", "A set of directions to let the pointer through", META_TYPE_BARRIER_DIRECTION, 0, 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); g_type_class_add_private (object_class, sizeof(MetaBarrierPrivate)); } void meta_barrier_destroy (MetaBarrier *barrier) { MetaBarrierPrivate *priv = barrier->priv; Display *dpy; if (priv->display == NULL) return; dpy = priv->display->xdisplay; if (!meta_barrier_is_active (barrier)) return; XFixesDestroyPointerBarrier (dpy, priv->xbarrier); g_hash_table_remove (priv->display->xids, &priv->xbarrier); priv->xbarrier = 0; g_object_unref (barrier); } static void meta_barrier_init (MetaBarrier *barrier) { barrier->priv = G_TYPE_INSTANCE_GET_PRIVATE (barrier, META_TYPE_BARRIER, MetaBarrierPrivate); } #ifdef HAVE_XI23 static void meta_barrier_fire_event (MetaBarrier *barrier, XIBarrierEvent *xevent) { MetaBarrierEvent *event = g_slice_new0 (MetaBarrierEvent); event->ref_count = 1; event->event_id = xevent->eventid; 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: g_signal_emit (barrier, obj_signals[HIT], 0, event); break; case XI_BarrierLeave: g_signal_emit (barrier, obj_signals[LEFT], 0, event); break; default: g_assert_not_reached (); } } gboolean meta_display_process_barrier_event (MetaDisplay *display, XIBarrierEvent *xev) { MetaBarrier *barrier; barrier = g_hash_table_lookup (display->xids, &xev->barrier); if (barrier != NULL) { meta_barrier_fire_event (barrier, xev); return TRUE; } return FALSE; } #endif /* HAVE_XI23 */ 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; } static 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_slice_free (MetaBarrierEvent, event); } G_DEFINE_BOXED_TYPE (MetaBarrierEvent, meta_barrier_event, meta_barrier_event_ref, meta_barrier_event_unref)