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st: Make StScrollables' paint volume reflect the unconstrained view

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And constrain it in StScrollView instead (instead of falling back to an
infinite paint volume, as the actor as paint/pick impls, but no
corresponding get_paint_volume one).

Fixes artifacts with the AppView (and possibly other places) when paint
volumes are aggressively cached.


(cherry picked from commit 4bf033a885)
This commit is contained in:
Carlos Garnacho 2018-05-16 21:57:38 +00:00 committed by Marco Trevisan
parent 6a796675bd
commit ddb309815c
2 changed files with 40 additions and 3 deletions
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35
src/st/st-box-layout.c
View File

@ -490,7 +490,7 @@ st_box_layout_get_paint_volume (ClutterActor *actor,
ClutterPaintVolume *volume)
{
StBoxLayout *self = ST_BOX_LAYOUT (actor);
gdouble x, y;
gdouble x, y, lower, upper;
StBoxLayoutPrivate *priv = self->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
ClutterActorBox allocation_box;
@ -505,13 +505,42 @@ st_box_layout_get_paint_volume (ClutterActor *actor,
* 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;
clutter_paint_volume_set_width (volume, content_box.x2 - content_box.x1);
clutter_paint_volume_set_height (volume, content_box.y2 - content_box.y1);
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;

8
src/st/st-scroll-view.c
View File

@ -304,6 +304,13 @@ st_scroll_view_pick (ClutterActor *actor,
clutter_actor_paint (priv->vscroll);
}
static gboolean
st_scroll_view_get_paint_volume (ClutterActor *actor,
ClutterPaintVolume *volume)
{
return clutter_paint_volume_set_from_allocation (volume, actor);
}
static double
get_scrollbar_width (StScrollView *scroll,
gfloat for_height)
@ -793,6 +800,7 @@ st_scroll_view_class_init (StScrollViewClass *klass)
actor_class->paint = st_scroll_view_paint;
actor_class->pick = st_scroll_view_pick;
actor_class->get_paint_volume = st_scroll_view_get_paint_volume;
actor_class->get_preferred_width = st_scroll_view_get_preferred_width;
actor_class->get_preferred_height = st_scroll_view_get_preferred_height;
actor_class->allocate = st_scroll_view_allocate;