f0f638d2bd
In order to reuse some vector math for pointer confinement, move out those parts to its own file, introducing the types old types "MetaVector2" and "MetaLine2" outside of meta-barrier-native.c, as well as introducing MetaBorder which is a line, with a blocking direction. https://bugzilla.gnome.org/show_bug.cgi?id=744104
355 lines
9.6 KiB
C
355 lines
9.6 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
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/**
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* SECTION:barrier
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* @Title: MetaBarrier
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* @Short_Description: Pointer barriers
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*/
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#include "config.h"
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#include <glib-object.h>
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#include <meta/util.h>
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#include <meta/barrier.h>
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#include "backends/native/meta-backend-native.h"
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#include "backends/native/meta-barrier-native.h"
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#include "backends/x11/meta-backend-x11.h"
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#include "backends/x11/meta-barrier-x11.h"
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#include <meta/meta-enum-types.h>
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G_DEFINE_TYPE (MetaBarrier, meta_barrier, G_TYPE_OBJECT)
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G_DEFINE_TYPE (MetaBarrierImpl, meta_barrier_impl, G_TYPE_OBJECT)
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enum {
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PROP_0,
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PROP_DISPLAY,
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PROP_X1,
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PROP_Y1,
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PROP_X2,
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PROP_Y2,
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PROP_DIRECTIONS,
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PROP_LAST,
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};
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static GParamSpec *obj_props[PROP_LAST];
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enum {
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HIT,
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LEFT,
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LAST_SIGNAL,
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};
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static guint obj_signals[LAST_SIGNAL];
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static void
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meta_barrier_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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MetaBarrier *barrier = META_BARRIER (object);
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MetaBarrierPrivate *priv = barrier->priv;
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switch (prop_id)
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{
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case PROP_DISPLAY:
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g_value_set_object (value, priv->display);
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break;
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case PROP_X1:
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g_value_set_int (value, priv->border.line.a.x);
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break;
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case PROP_Y1:
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g_value_set_int (value, priv->border.line.a.y);
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break;
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case PROP_X2:
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g_value_set_int (value, priv->border.line.b.x);
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break;
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case PROP_Y2:
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g_value_set_int (value, priv->border.line.b.y);
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break;
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case PROP_DIRECTIONS:
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g_value_set_flags (value,
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meta_border_get_allows_directions (&priv->border));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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meta_barrier_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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MetaBarrier *barrier = META_BARRIER (object);
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MetaBarrierPrivate *priv = barrier->priv;
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switch (prop_id)
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{
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case PROP_DISPLAY:
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priv->display = g_value_get_object (value);
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break;
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case PROP_X1:
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priv->border.line.a.x = g_value_get_int (value);
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break;
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case PROP_Y1:
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priv->border.line.a.y = g_value_get_int (value);
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break;
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case PROP_X2:
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priv->border.line.b.x = g_value_get_int (value);
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break;
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case PROP_Y2:
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priv->border.line.b.y = g_value_get_int (value);
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break;
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case PROP_DIRECTIONS:
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meta_border_set_allows_directions (&priv->border,
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g_value_get_flags (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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meta_barrier_dispose (GObject *object)
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{
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MetaBarrier *barrier = META_BARRIER (object);
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if (meta_barrier_is_active (barrier))
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{
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meta_bug ("MetaBarrier %p was destroyed while it was still active.",
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barrier);
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}
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G_OBJECT_CLASS (meta_barrier_parent_class)->dispose (object);
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}
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gboolean
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meta_barrier_is_active (MetaBarrier *barrier)
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{
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MetaBarrierImpl *impl = barrier->priv->impl;
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if (impl)
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return META_BARRIER_IMPL_GET_CLASS (impl)->is_active (impl);
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else
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return FALSE;
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}
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/**
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* meta_barrier_release:
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* @barrier: The barrier to release
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* @event: The event to release the pointer for
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*
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* In XI2.3, pointer barriers provide a feature where they can
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* be temporarily released so that the pointer goes through
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* them. Pass a #MetaBarrierEvent to release the barrier for
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* this event sequence.
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*/
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void
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meta_barrier_release (MetaBarrier *barrier,
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MetaBarrierEvent *event)
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{
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MetaBarrierImpl *impl = barrier->priv->impl;
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if (impl)
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META_BARRIER_IMPL_GET_CLASS (impl)->release (impl, event);
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}
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static void
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meta_barrier_constructed (GObject *object)
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{
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MetaBarrier *barrier = META_BARRIER (object);
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MetaBarrierPrivate *priv = barrier->priv;
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g_return_if_fail (priv->border.line.a.x == priv->border.line.b.x ||
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priv->border.line.a.y == priv->border.line.b.y);
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#if defined(HAVE_NATIVE_BACKEND)
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if (META_IS_BACKEND_NATIVE (meta_get_backend ()))
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priv->impl = meta_barrier_impl_native_new (barrier);
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#endif
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#if defined(HAVE_XI23)
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if (META_IS_BACKEND_X11 (meta_get_backend ()) &&
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!meta_is_wayland_compositor ())
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priv->impl = meta_barrier_impl_x11_new (barrier);
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#endif
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if (priv->impl == NULL)
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g_warning ("Created a non-working barrier");
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/* Take a ref that we'll release in destroy() so that the object stays
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* alive while active. */
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g_object_ref (barrier);
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G_OBJECT_CLASS (meta_barrier_parent_class)->constructed (object);
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}
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static void
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meta_barrier_class_init (MetaBarrierClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->get_property = meta_barrier_get_property;
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object_class->set_property = meta_barrier_set_property;
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object_class->dispose = meta_barrier_dispose;
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object_class->constructed = meta_barrier_constructed;
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obj_props[PROP_DISPLAY] =
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g_param_spec_object ("display",
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"Display",
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"The display to construct the pointer barrier on",
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META_TYPE_DISPLAY,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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obj_props[PROP_X1] =
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g_param_spec_int ("x1",
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"X1",
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"The first X coordinate of the barrier",
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0, G_MAXSHORT, 0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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obj_props[PROP_Y1] =
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g_param_spec_int ("y1",
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"Y1",
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"The first Y coordinate of the barrier",
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0, G_MAXSHORT, 0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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obj_props[PROP_X2] =
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g_param_spec_int ("x2",
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"X2",
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"The second X coordinate of the barrier",
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0, G_MAXSHORT, G_MAXSHORT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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obj_props[PROP_Y2] =
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g_param_spec_int ("y2",
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"Y2",
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"The second Y coordinate of the barrier",
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0, G_MAXSHORT, G_MAXSHORT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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obj_props[PROP_DIRECTIONS] =
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g_param_spec_flags ("directions",
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"Directions",
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"A set of directions to let the pointer through",
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META_TYPE_BARRIER_DIRECTION,
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0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (object_class, PROP_LAST, obj_props);
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/**
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* MetaBarrier::hit:
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* @barrier: The #MetaBarrier that was hit
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* @event: A #MetaBarrierEvent that has the details of how
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* the barrier was hit.
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*
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* When a pointer barrier is hit, this will trigger. This
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* requires an XI2-enabled server.
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*/
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obj_signals[HIT] =
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g_signal_new ("hit",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_FIRST,
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0,
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NULL, NULL, NULL,
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G_TYPE_NONE, 1,
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META_TYPE_BARRIER_EVENT);
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/**
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* MetaBarrier::left:
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* @barrier: The #MetaBarrier that was left
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* @event: A #MetaBarrierEvent that has the details of how
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* the barrier was left.
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*
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* When a pointer barrier hitbox was left, this will trigger.
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* This requires an XI2-enabled server.
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*/
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obj_signals[LEFT] =
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g_signal_new ("left",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_FIRST,
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0,
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NULL, NULL, NULL,
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G_TYPE_NONE, 1,
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META_TYPE_BARRIER_EVENT);
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g_type_class_add_private (object_class, sizeof(MetaBarrierPrivate));
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}
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void
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meta_barrier_destroy (MetaBarrier *barrier)
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{
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MetaBarrierImpl *impl = barrier->priv->impl;
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if (impl)
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return META_BARRIER_IMPL_GET_CLASS (impl)->destroy (impl);
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g_object_unref (barrier);
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}
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static void
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meta_barrier_init (MetaBarrier *barrier)
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{
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barrier->priv = G_TYPE_INSTANCE_GET_PRIVATE (barrier, META_TYPE_BARRIER, MetaBarrierPrivate);
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}
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void
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_meta_barrier_emit_hit_signal (MetaBarrier *barrier,
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MetaBarrierEvent *event)
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{
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g_signal_emit (barrier, obj_signals[HIT], 0, event);
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}
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void
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_meta_barrier_emit_left_signal (MetaBarrier *barrier,
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MetaBarrierEvent *event)
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{
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g_signal_emit (barrier, obj_signals[LEFT], 0, event);
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}
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static void
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meta_barrier_impl_class_init (MetaBarrierImplClass *klass)
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{
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klass->is_active = NULL;
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klass->release = NULL;
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klass->destroy = NULL;
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}
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static void
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meta_barrier_impl_init (MetaBarrierImpl *impl)
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{
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}
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static MetaBarrierEvent *
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meta_barrier_event_ref (MetaBarrierEvent *event)
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{
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g_return_val_if_fail (event != NULL, NULL);
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g_return_val_if_fail (event->ref_count > 0, NULL);
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g_atomic_int_inc ((volatile int *)&event->ref_count);
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return event;
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}
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void
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meta_barrier_event_unref (MetaBarrierEvent *event)
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{
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g_return_if_fail (event != NULL);
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g_return_if_fail (event->ref_count > 0);
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if (g_atomic_int_dec_and_test ((volatile int *)&event->ref_count))
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g_slice_free (MetaBarrierEvent, event);
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}
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G_DEFINE_BOXED_TYPE (MetaBarrierEvent,
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meta_barrier_event,
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meta_barrier_event_ref,
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meta_barrier_event_unref)
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