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[ui] Add a function to get root view from any view

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This proved useful with canvas references.
This commit is contained in:
Bill Currie 2023-12-31 14:39:14 +09:00
parent 6b2bd02b14
commit fc9c2fa544
1 changed files with 14 additions and 0 deletions
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14
include/QF/ui/view.h
View file

@ -157,6 +157,7 @@ void view_flow_up_left (view_t view, view_pos_t len);
VIEWINLINE hierref_t *View_GetRef (view_t view); VIEWINLINE hierref_t *View_GetRef (view_t view);
VIEWINLINE int View_Valid (view_t view); VIEWINLINE int View_Valid (view_t view);
VIEWINLINE view_t View_GetRoot (view_t view);
VIEWINLINE view_t View_GetParent (view_t view); VIEWINLINE view_t View_GetParent (view_t view);
VIEWINLINE uint32_t View_ChildCount (view_t view); VIEWINLINE uint32_t View_ChildCount (view_t view);
VIEWINLINE view_t View_GetChild (view_t view, uint32_t index); VIEWINLINE view_t View_GetChild (view_t view, uint32_t index);
@ -219,6 +220,19 @@ View_Delete (view_t view)
} }
} }
VIEWINLINE
view_t
View_GetRoot (view_t view)
{
__auto_type ref = View_GetRef (view);
hierarchy_t *h = ref->hierarchy;
return (view_t) {
.reg = view.reg,
.id = h->ent[0],
.comp = view.comp,
};
}
VIEWINLINE VIEWINLINE
view_t view_t
View_GetParent (view_t view) View_GetParent (view_t view)