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Implement ::raise(), ::lower() and ::sort_depth_order() in ClutterBox

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Provide the implementations of the newly added ClutterContainer virtual
functions inside ClutterBox.
This commit is contained in:
Emmanuele Bassi 2007-08-13 17:01:30 +00:00
parent ad184c0fe3
commit 143005bd79
1 changed files with 142 additions and 0 deletions
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142
clutter/clutter-box.c
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@ -160,6 +160,145 @@ clutter_box_find_child_by_id (ClutterContainer *container,
return actor;
}
static void
clutter_box_raise (ClutterContainer *container,
ClutterActor *actor,
ClutterActor *sibling)
{
ClutterBox *box = CLUTTER_BOX (container);
ClutterBoxChild *child = NULL, *sibling_child = NULL;
GList *l;
gint pos;
for (l = box->children; l; l = l->next)
{
child = l->data;
if (child->actor == actor)
break;
}
box->children = g_list_remove (box->children, child);
if (!sibling)
{
GList *last_item;
/* raise to top */
last_item = g_list_last (box->children);
if (last_item)
sibling_child = last_item->data;
box->children = g_list_append (box->children, child);
}
else
{
for (pos = 1, l = box->children; l; l = l->next, pos += 1)
{
sibling_child = l->data;
if (sibling_child->actor == sibling)
break;
}
box->children = g_list_insert (box->children, child, pos);
}
if (sibling_child)
{
ClutterActor *a = child->actor;
ClutterActor *b = sibling_child->actor;
if (clutter_actor_get_depth (a) != clutter_actor_get_depth (b))
clutter_actor_set_depth (a, clutter_actor_get_depth (b));
}
}
static void
clutter_box_lower (ClutterContainer *container,
ClutterActor *actor,
ClutterActor *sibling)
{
ClutterBox *box = CLUTTER_BOX (container);
ClutterBoxChild *child = NULL, *sibling_child = NULL;
GList *l;
gint pos;
for (l = box->children; l; l = l->next)
{
child = l->data;
if (child->actor == actor)
break;
}
box->children = g_list_remove (box->children, child);
if (!sibling)
{
GList *first_item;
/* lower to bottom */
first_item = g_list_first (box->children);
if (first_item)
sibling_child = first_item->data;
box->children = g_list_prepend (box->children, child);
}
else
{
for (pos = 1, l = box->children; l; l = l->next, pos += 1)
{
sibling_child = l->data;
if (sibling_child->actor == sibling)
break;
}
box->children = g_list_insert (box->children, child, pos);
}
if (sibling_child)
{
ClutterActor *a = child->actor;
ClutterActor *b = sibling_child->actor;
if (clutter_actor_get_depth (a) != clutter_actor_get_depth (b))
clutter_actor_set_depth (a, clutter_actor_get_depth (b));
}
}
static gint
sort_z_order (gconstpointer a,
gconstpointer b)
{
ClutterBoxChild *child_a = (ClutterBoxChild *) a;
ClutterBoxChild *child_b = (ClutterBoxChild *) b;
gint depth_a, depth_b;
depth_a = clutter_actor_get_depth (child_a->actor);
depth_b = clutter_actor_get_depth (child_b->actor);
if (depth_a == depth_b)
return 0;
if (depth_a > depth_b)
return 1;
return -1;
}
static void
clutter_box_sort_depth_order (ClutterContainer *container)
{
ClutterBox *box = CLUTTER_BOX (container);
box->children = g_list_sort (box->children, sort_z_order);
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (box)))
clutter_actor_queue_redraw (CLUTTER_ACTOR (box));
}
static void
clutter_container_iface_init (ClutterContainerIface *iface)
{
@ -167,6 +306,9 @@ clutter_container_iface_init (ClutterContainerIface *iface)
iface->remove = clutter_box_remove;
iface->foreach = clutter_box_foreach;
iface->find_child_by_id = clutter_box_find_child_by_id;
iface->raise = clutter_box_raise;
iface->lower = clutter_box_lower;
iface->sort_depth_order = clutter_box_sort_depth_order;
}
static void