brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

paint-volume: Add a union method for boxes

Browse Source 
Creating PaintVolume instances is not possible, and it's not recommended
anyway. It is, though, necessary to union paint volumes, especially with
2D boxes, in some cases.

Clutter should provide a simple convenience function that allows
unioning volumes to boxes in a moderately efficient way.

https://bugzilla.gnome.org/show_bug.cgi?id=670021
This commit is contained in:
Emmanuele Bassi 2012-02-13 22:40:19 +00:00 committed by Emmanuele Bassi
parent 618e04e9cc
commit 6a09bf5b52
4 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
clutter/clutter-paint-volume.c
View File

@ -640,6 +640,42 @@ done:
pv->is_complete = FALSE;
}
/**
* clutter_paint_volume_union_box:
* @pv: a #ClutterPaintVolume
* @box: a #ClutterActorBox to union to @pv
*
* Unions the 2D region represented by @box to a #ClutterPaintVolume.
*
* This function is similar to clutter_paint_volume_union(), but it is
* specific for 2D regions.
*
* Since: 1.10
*/
void
clutter_paint_volume_union_box (ClutterPaintVolume *pv,
const ClutterActorBox *box)
{
ClutterPaintVolume volume;
ClutterVertex origin;
g_return_if_fail (pv != NULL);
g_return_if_fail (box != NULL);
_clutter_paint_volume_init_static (&volume, pv->actor);
origin.x = box->x1;
origin.y = box->y1;
origin.z = 0.f;
clutter_paint_volume_set_origin (&volume, &origin);
clutter_paint_volume_set_width (&volume, box->x2 - box->x1);
clutter_paint_volume_set_height (&volume, box->y2 - box->y1);
clutter_paint_volume_union (pv, &volume);
clutter_paint_volume_free (&volume);
}
/* The paint_volume setters only update vertices 0, 1, 3 and
* 4 since the others can be drived from them.
*

2
clutter/clutter-types.h
View File

@ -279,6 +279,8 @@ void clutter_paint_volume_set_depth (ClutterPaintVolume
gfloat clutter_paint_volume_get_depth (const ClutterPaintVolume *pv);
void clutter_paint_volume_union (ClutterPaintVolume *pv,
const ClutterPaintVolume *another_pv);
void clutter_paint_volume_union_box (ClutterPaintVolume *pv,
const ClutterActorBox *box);
gboolean clutter_paint_volume_set_from_allocation (ClutterPaintVolume *pv,
ClutterActor *actor);

1
clutter/clutter.symbols
View File

@ -900,6 +900,7 @@ clutter_paint_volume_set_from_allocation
clutter_paint_volume_set_height
clutter_paint_volume_set_origin
clutter_paint_volume_set_width
clutter_paint_volume_union_box
clutter_paint_volume_union
clutter_param_color_get_type
clutter_param_fixed_get_type

1
doc/reference/clutter/clutter-sections.txt
View File

@ -547,6 +547,7 @@ clutter_paint_volume_set_depth
clutter_paint_volume_get_depth
clutter_paint_volume_set_from_allocation
clutter_paint_volume_union
clutter_paint_volume_union_box
<SUBSECTION Standard>
CLUTTER_TYPE_GEOMETRY