st/box-layout: Reimplement as a StViewport subclass
With StViewport doing most of the heavy-lifting, StBoxLayout can be cleaned up as a StViewport subclass. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/929
This commit is contained in:
Georges Basile Stavracas Neto
parent
56805a4c85
commit
479c14c766
@ -57,16 +57,12 @@
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static void st_box_container_iface_init (ClutterContainerIface *iface);
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static void st_box_container_iface_init (ClutterContainerIface *iface);
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static void st_box_scrollable_interface_init (StScrollableInterface *iface);
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enum {
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enum {
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PROP_0,
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PROP_0,
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PROP_VERTICAL,
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PROP_VERTICAL,
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PROP_PACK_START,
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PROP_PACK_START,
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PROP_HADJUST,
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PROP_VADJUST
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};
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};
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struct _StBoxLayoutPrivate
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struct _StBoxLayoutPrivate
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@ -75,104 +71,10 @@ struct _StBoxLayoutPrivate
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StAdjustment *vadjustment;
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StAdjustment *vadjustment;
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};
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};
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G_DEFINE_TYPE_WITH_CODE (StBoxLayout, st_box_layout, ST_TYPE_WIDGET,
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G_DEFINE_TYPE_WITH_CODE (StBoxLayout, st_box_layout, ST_TYPE_VIEWPORT,
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G_ADD_PRIVATE (StBoxLayout)
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G_ADD_PRIVATE (StBoxLayout)
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTAINER,
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTAINER,
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st_box_container_iface_init)
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st_box_container_iface_init));
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G_IMPLEMENT_INTERFACE (ST_TYPE_SCROLLABLE,
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st_box_scrollable_interface_init));
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/*
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* StScrollable Interface Implementation
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*/
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static void
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adjustment_value_notify_cb (StAdjustment *adjustment,
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GParamSpec *pspec,
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StBoxLayout *box)
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{
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clutter_actor_queue_relayout (CLUTTER_ACTOR (box));
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}
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static void
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scrollable_set_adjustments (StScrollable *scrollable,
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StAdjustment *hadjustment,
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StAdjustment *vadjustment)
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{
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StBoxLayoutPrivate *priv = ST_BOX_LAYOUT (scrollable)->priv;
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g_object_freeze_notify (G_OBJECT (scrollable));
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if (hadjustment != priv->hadjustment)
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{
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if (priv->hadjustment)
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{
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g_signal_handlers_disconnect_by_func (priv->hadjustment,
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adjustment_value_notify_cb,
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scrollable);
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g_object_unref (priv->hadjustment);
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}
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if (hadjustment)
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{
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g_object_ref (hadjustment);
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g_signal_connect (hadjustment, "notify::value",
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G_CALLBACK (adjustment_value_notify_cb),
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scrollable);
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}
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priv->hadjustment = hadjustment;
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g_object_notify (G_OBJECT (scrollable), "hadjustment");
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}
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if (vadjustment != priv->vadjustment)
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{
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if (priv->vadjustment)
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{
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g_signal_handlers_disconnect_by_func (priv->vadjustment,
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adjustment_value_notify_cb,
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scrollable);
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g_object_unref (priv->vadjustment);
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}
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if (vadjustment)
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{
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g_object_ref (vadjustment);
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g_signal_connect (vadjustment, "notify::value",
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G_CALLBACK (adjustment_value_notify_cb),
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scrollable);
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}
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priv->vadjustment = vadjustment;
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g_object_notify (G_OBJECT (scrollable), "vadjustment");
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}
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g_object_thaw_notify (G_OBJECT (scrollable));
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}
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static void
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scrollable_get_adjustments (StScrollable *scrollable,
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StAdjustment **hadjustment,
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StAdjustment **vadjustment)
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{
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StBoxLayoutPrivate *priv;
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priv = (ST_BOX_LAYOUT (scrollable))->priv;
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if (hadjustment)
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*hadjustment = priv->hadjustment;
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if (vadjustment)
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*vadjustment = priv->vadjustment;
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}
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static void
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st_box_scrollable_interface_init (StScrollableInterface *iface)
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{
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iface->set_adjustments = scrollable_set_adjustments;
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iface->get_adjustments = scrollable_get_adjustments;
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}
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static void
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static void
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st_box_container_iface_init (ClutterContainerIface *iface)
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st_box_container_iface_init (ClutterContainerIface *iface)
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@ -188,7 +90,6 @@ st_box_layout_get_property (GObject *object,
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GParamSpec *pspec)
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GParamSpec *pspec)
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{
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{
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ClutterLayoutManager *layout;
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ClutterLayoutManager *layout;
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StAdjustment *adjustment;
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ClutterOrientation orientation;
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ClutterOrientation orientation;
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switch (property_id)
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switch (property_id)
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@ -204,16 +105,6 @@ st_box_layout_get_property (GObject *object,
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g_value_set_boolean (value, clutter_box_layout_get_pack_start (CLUTTER_BOX_LAYOUT (layout)));
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g_value_set_boolean (value, clutter_box_layout_get_pack_start (CLUTTER_BOX_LAYOUT (layout)));
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break;
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break;
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case PROP_HADJUST:
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scrollable_get_adjustments (ST_SCROLLABLE (object), &adjustment, NULL);
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g_value_set_object (value, adjustment);
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break;
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case PROP_VADJUST:
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scrollable_get_adjustments (ST_SCROLLABLE (object), NULL, &adjustment);
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g_value_set_object (value, adjustment);
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break;
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default:
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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@ -237,343 +128,11 @@ st_box_layout_set_property (GObject *object,
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st_box_layout_set_pack_start (box, g_value_get_boolean (value));
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st_box_layout_set_pack_start (box, g_value_get_boolean (value));
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break;
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break;
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case PROP_HADJUST:
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scrollable_set_adjustments (ST_SCROLLABLE (object),
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g_value_get_object (value),
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box->priv->vadjustment);
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break;
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case PROP_VADJUST:
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scrollable_set_adjustments (ST_SCROLLABLE (object),
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box->priv->hadjustment,
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g_value_get_object (value));
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break;
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default:
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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}
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}
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static void
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st_box_layout_dispose (GObject *object)
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{
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StBoxLayoutPrivate *priv = ST_BOX_LAYOUT (object)->priv;
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if (priv->hadjustment)
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{
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g_object_unref (priv->hadjustment);
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priv->hadjustment = NULL;
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}
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if (priv->vadjustment)
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{
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g_object_unref (priv->vadjustment);
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priv->vadjustment = NULL;
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}
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G_OBJECT_CLASS (st_box_layout_parent_class)->dispose (object);
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}
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static void
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st_box_layout_allocate (ClutterActor *actor,
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const ClutterActorBox *box,
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ClutterAllocationFlags flags)
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{
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StBoxLayoutPrivate *priv = ST_BOX_LAYOUT (actor)->priv;
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
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ClutterLayoutManager *layout = clutter_actor_get_layout_manager (actor);
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ClutterActorBox viewport_content_box;
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ClutterActorBox content_box;
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gfloat avail_width, avail_height, min_width, natural_width, min_height, natural_height;
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st_theme_node_get_content_box (theme_node, box, &viewport_content_box);
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clutter_actor_box_get_size (&viewport_content_box, &avail_width, &avail_height);
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clutter_layout_manager_get_preferred_width (layout, CLUTTER_CONTAINER (actor),
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avail_height,
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&min_width, &natural_width);
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clutter_layout_manager_get_preferred_height (layout, CLUTTER_CONTAINER (actor),
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MAX (avail_width, min_width),
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&min_height, &natural_height);
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/* Because StBoxLayout implements StScrollable, the allocation box passed here
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* may not match the minimum sizes reported by the layout manager. When that
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* happens, the content box needs to be adjusted to match the reported minimum
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* sizes before being passed to clutter_layout_manager_allocate() */
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clutter_actor_set_allocation (actor, box, flags);
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content_box = viewport_content_box;
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content_box.x2 += MAX (0, min_width - avail_width);
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content_box.y2 += MAX (0, min_height - avail_height);
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clutter_layout_manager_allocate (layout, CLUTTER_CONTAINER (actor),
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&content_box, flags);
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/* update adjustments for scrolling */
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if (priv->vadjustment)
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{
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gdouble prev_value;
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g_object_set (G_OBJECT (priv->vadjustment),
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"lower", 0.0,
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"upper", MAX (min_height, avail_height),
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"page-size", avail_height,
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"step-increment", avail_height / 6,
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"page-increment", avail_height - avail_height / 6,
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NULL);
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prev_value = st_adjustment_get_value (priv->vadjustment);
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st_adjustment_set_value (priv->vadjustment, prev_value);
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}
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if (priv->hadjustment)
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{
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gdouble prev_value;
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g_object_set (G_OBJECT (priv->hadjustment),
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"lower", 0.0,
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"upper", MAX (min_width, avail_width),
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"page-size", avail_width,
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"step-increment", avail_width / 6,
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"page-increment", avail_width - avail_width / 6,
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NULL);
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prev_value = st_adjustment_get_value (priv->hadjustment);
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st_adjustment_set_value (priv->hadjustment, prev_value);
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}
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}
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static void
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st_box_layout_apply_transform (ClutterActor *a,
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CoglMatrix *m)
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{
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StBoxLayoutPrivate *priv = ST_BOX_LAYOUT (a)->priv;
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gdouble x, y;
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CLUTTER_ACTOR_CLASS (st_box_layout_parent_class)->apply_transform (a, m);
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if (priv->hadjustment)
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x = st_adjustment_get_value (priv->hadjustment);
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else
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x = 0;
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if (priv->vadjustment)
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y = st_adjustment_get_value (priv->vadjustment);
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else
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y = 0;
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cogl_matrix_translate (m, (int) -x, (int) -y, 0);
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}
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/* If we are translated, then we need to translate back before chaining
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* up or the background and borders will be drawn in the wrong place */
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static void
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get_border_paint_offsets (StBoxLayout *self,
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double *x,
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double *y)
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{
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StBoxLayoutPrivate *priv = self->priv;
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if (priv->hadjustment)
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*x = st_adjustment_get_value (priv->hadjustment);
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else
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*x = 0;
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if (priv->vadjustment)
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*y = st_adjustment_get_value (priv->vadjustment);
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else
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*y = 0;
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}
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static void
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st_box_layout_paint (ClutterActor *actor,
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ClutterPaintContext *paint_context)
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{
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StBoxLayout *self = ST_BOX_LAYOUT (actor);
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StBoxLayoutPrivate *priv = self->priv;
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
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gdouble x, y;
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ClutterActorBox allocation_box;
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ClutterActorBox content_box;
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ClutterActor *child;
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CoglFramebuffer *fb = clutter_paint_context_get_framebuffer (paint_context);
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get_border_paint_offsets (self, &x, &y);
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if (x != 0 || y != 0)
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{
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cogl_framebuffer_push_matrix (fb);
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cogl_framebuffer_translate (fb, (int)x, (int)y, 0);
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}
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st_widget_paint_background (ST_WIDGET (actor), paint_context);
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if (x != 0 || y != 0)
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{
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cogl_framebuffer_pop_matrix (fb);
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}
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if (clutter_actor_get_n_children (actor) == 0)
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return;
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clutter_actor_get_allocation_box (actor, &allocation_box);
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st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
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content_box.x1 += x;
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content_box.y1 += y;
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content_box.x2 += x;
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content_box.y2 += y;
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/* The content area forms the viewport into the scrolled contents, while
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* the borders and background stay in place; after drawing the borders and
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* background, we clip to the content area */
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if (priv->hadjustment || priv->vadjustment)
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cogl_framebuffer_push_rectangle_clip (fb,
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(int)content_box.x1,
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(int)content_box.y1,
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(int)content_box.x2,
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(int)content_box.y2);
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for (child = clutter_actor_get_first_child (actor);
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child != NULL;
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child = clutter_actor_get_next_sibling (child))
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clutter_actor_paint (child, paint_context);
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if (priv->hadjustment || priv->vadjustment)
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cogl_framebuffer_pop_clip (fb);
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}
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static void
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st_box_layout_pick (ClutterActor *actor,
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ClutterPickContext *pick_context)
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{
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StBoxLayout *self = ST_BOX_LAYOUT (actor);
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StBoxLayoutPrivate *priv = self->priv;
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
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gdouble x, y;
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ClutterActorBox allocation_box;
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ClutterActorBox content_box;
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ClutterActor *child;
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CoglFramebuffer *fb = clutter_pick_context_get_framebuffer (pick_context);
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get_border_paint_offsets (self, &x, &y);
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if (x != 0 || y != 0)
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{
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|
||||||
cogl_framebuffer_push_matrix (fb);
|
|
||||||
cogl_framebuffer_translate (fb, (int)x, (int)y, 0);
|
|
||||||
}
|
|
||||||
|
|
||||||
CLUTTER_ACTOR_CLASS (st_box_layout_parent_class)->pick (actor, pick_context);
|
|
||||||
|
|
||||||
if (x != 0 || y != 0)
|
|
||||||
{
|
|
||||||
cogl_framebuffer_pop_matrix (fb);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (clutter_actor_get_n_children (actor) == 0)
|
|
||||||
return;
|
|
||||||
|
|
||||||
clutter_actor_get_allocation_box (actor, &allocation_box);
|
|
||||||
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
|
|
||||||
|
|
||||||
content_box.x1 += x;
|
|
||||||
content_box.y1 += y;
|
|
||||||
content_box.x2 += x;
|
|
||||||
content_box.y2 += y;
|
|
||||||
|
|
||||||
if (priv->hadjustment || priv->vadjustment)
|
|
||||||
cogl_framebuffer_push_rectangle_clip (fb,
|
|
||||||
(int)content_box.x1,
|
|
||||||
(int)content_box.y1,
|
|
||||||
(int)content_box.x2,
|
|
||||||
(int)content_box.y2);
|
|
||||||
|
|
||||||
for (child = clutter_actor_get_first_child (actor);
|
|
||||||
child != NULL;
|
|
||||||
child = clutter_actor_get_next_sibling (child))
|
|
||||||
clutter_actor_pick (child, pick_context);
|
|
||||||
|
|
||||||
if (priv->hadjustment || priv->vadjustment)
|
|
||||||
cogl_framebuffer_pop_clip (fb);
|
|
||||||
}
|
|
||||||
|
|
||||||
static gboolean
|
|
||||||
st_box_layout_get_paint_volume (ClutterActor *actor,
|
|
||||||
ClutterPaintVolume *volume)
|
|
||||||
{
|
|
||||||
StBoxLayout *self = ST_BOX_LAYOUT (actor);
|
|
||||||
gdouble x, y, lower, upper;
|
|
||||||
StBoxLayoutPrivate *priv = self->priv;
|
|
||||||
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
|
|
||||||
ClutterActorBox allocation_box;
|
|
||||||
ClutterActorBox content_box;
|
|
||||||
graphene_point3d_t origin;
|
|
||||||
|
|
||||||
/* Setting the paint volume does not make sense when we don't have any allocation */
|
|
||||||
if (!clutter_actor_has_allocation (actor))
|
|
||||||
return FALSE;
|
|
||||||
|
|
||||||
/* When have an adjustment we are clipped to the content box, so base
|
|
||||||
* our paint volume on that. */
|
|
||||||
if (priv->hadjustment || priv->vadjustment)
|
|
||||||
{
|
|
||||||
gdouble width, height;
|
|
||||||
|
|
||||||
clutter_actor_get_allocation_box (actor, &allocation_box);
|
|
||||||
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
|
|
||||||
origin.x = content_box.x1 - allocation_box.x1;
|
|
||||||
origin.y = content_box.y1 - allocation_box.y2;
|
|
||||||
origin.z = 0.f;
|
|
||||||
|
|
||||||
if (priv->hadjustment)
|
|
||||||
{
|
|
||||||
g_object_get (priv->hadjustment,
|
|
||||||
"lower", &lower,
|
|
||||||
"upper", &upper,
|
|
||||||
NULL);
|
|
||||||
width = upper - lower;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
width = content_box.x2 - content_box.x1;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (priv->vadjustment)
|
|
||||||
{
|
|
||||||
g_object_get (priv->vadjustment,
|
|
||||||
"lower", &lower,
|
|
||||||
"upper", &upper,
|
|
||||||
NULL);
|
|
||||||
height = upper - lower;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
height = content_box.y2 - content_box.y1;
|
|
||||||
}
|
|
||||||
|
|
||||||
clutter_paint_volume_set_width (volume, width);
|
|
||||||
clutter_paint_volume_set_height (volume, height);
|
|
||||||
}
|
|
||||||
else if (!CLUTTER_ACTOR_CLASS (st_box_layout_parent_class)->get_paint_volume (actor, volume))
|
|
||||||
return FALSE;
|
|
||||||
|
|
||||||
/* When scrolled, st_box_layout_apply_transform() includes the scroll offset
|
|
||||||
* and affects paint volumes. This is right for our children, but our paint volume
|
|
||||||
* is determined by our allocation and borders and doesn't scroll, so we need
|
|
||||||
* to reverse-compensate here, the same as we do when painting.
|
|
||||||
*/
|
|
||||||
get_border_paint_offsets (self, &x, &y);
|
|
||||||
if (x != 0 || y != 0)
|
|
||||||
{
|
|
||||||
clutter_paint_volume_get_origin (volume, &origin);
|
|
||||||
origin.x += x;
|
|
||||||
origin.y += y;
|
|
||||||
clutter_paint_volume_set_origin (volume, &origin);
|
|
||||||
}
|
|
||||||
|
|
||||||
return TRUE;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
static void
|
||||||
st_box_layout_style_changed (StWidget *self)
|
st_box_layout_style_changed (StWidget *self)
|
||||||
{
|
{
|
||||||
@ -623,20 +182,11 @@ static void
|
|||||||
st_box_layout_class_init (StBoxLayoutClass *klass)
|
st_box_layout_class_init (StBoxLayoutClass *klass)
|
||||||
{
|
{
|
||||||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||||||
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
|
|
||||||
StWidgetClass *widget_class = ST_WIDGET_CLASS (klass);
|
StWidgetClass *widget_class = ST_WIDGET_CLASS (klass);
|
||||||
GParamSpec *pspec;
|
GParamSpec *pspec;
|
||||||
|
|
||||||
object_class->get_property = st_box_layout_get_property;
|
object_class->get_property = st_box_layout_get_property;
|
||||||
object_class->set_property = st_box_layout_set_property;
|
object_class->set_property = st_box_layout_set_property;
|
||||||
object_class->dispose = st_box_layout_dispose;
|
|
||||||
|
|
||||||
actor_class->allocate = st_box_layout_allocate;
|
|
||||||
actor_class->apply_transform = st_box_layout_apply_transform;
|
|
||||||
|
|
||||||
actor_class->paint = st_box_layout_paint;
|
|
||||||
actor_class->get_paint_volume = st_box_layout_get_paint_volume;
|
|
||||||
actor_class->pick = st_box_layout_pick;
|
|
||||||
|
|
||||||
widget_class->style_changed = st_box_layout_style_changed;
|
widget_class->style_changed = st_box_layout_style_changed;
|
||||||
|
|
||||||
@ -654,16 +204,6 @@ st_box_layout_class_init (StBoxLayoutClass *klass)
|
|||||||
FALSE,
|
FALSE,
|
||||||
ST_PARAM_READWRITE);
|
ST_PARAM_READWRITE);
|
||||||
g_object_class_install_property (object_class, PROP_PACK_START, pspec);
|
g_object_class_install_property (object_class, PROP_PACK_START, pspec);
|
||||||
|
|
||||||
/* StScrollable properties */
|
|
||||||
g_object_class_override_property (object_class,
|
|
||||||
PROP_HADJUST,
|
|
||||||
"hadjustment");
|
|
||||||
|
|
||||||
g_object_class_override_property (object_class,
|
|
||||||
PROP_VADJUST,
|
|
||||||
"vadjustment");
|
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static void
|
static void
|
||||||
|
|||||||
@ -26,11 +26,12 @@
|
|||||||
#define _ST_BOX_LAYOUT_H
|
#define _ST_BOX_LAYOUT_H
|
||||||
|
|
||||||
#include <st/st-widget.h>
|
#include <st/st-widget.h>
|
||||||
|
#include <st/st-viewport.h>
|
||||||
|
|
||||||
G_BEGIN_DECLS
|
G_BEGIN_DECLS
|
||||||
|
|
||||||
#define ST_TYPE_BOX_LAYOUT st_box_layout_get_type()
|
#define ST_TYPE_BOX_LAYOUT st_box_layout_get_type()
|
||||||
G_DECLARE_FINAL_TYPE (StBoxLayout, st_box_layout, ST, BOX_LAYOUT, StWidget)
|
G_DECLARE_FINAL_TYPE (StBoxLayout, st_box_layout, ST, BOX_LAYOUT, StViewport)
|
||||||
|
|
||||||
typedef struct _StBoxLayout StBoxLayout;
|
typedef struct _StBoxLayout StBoxLayout;
|
||||||
typedef struct _StBoxLayoutPrivate StBoxLayoutPrivate;
|
typedef struct _StBoxLayoutPrivate StBoxLayoutPrivate;
|
||||||
@ -44,7 +45,7 @@ typedef struct _StBoxLayoutPrivate StBoxLayoutPrivate;
|
|||||||
struct _StBoxLayout
|
struct _StBoxLayout
|
||||||
{
|
{
|
||||||
/*< private >*/
|
/*< private >*/
|
||||||
StWidget parent;
|
StViewport parent;
|
||||||
|
|
||||||
StBoxLayoutPrivate *priv;
|
StBoxLayoutPrivate *priv;
|
||||||
};
|
};
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user