Defer widget rebuild to just before they are rendered

[libs/gltk.git] / source / widget.cpp

diff --git a/source/widget.cpp b/source/widget.cpp
index aa05675b97c1c989c499916247173785593dad5c..1c73d7640cc610c49ccb33f6e7f4b0fe315a83d0 100644 (file)
--- a/source/widget.cpp
+++ b/source/widget.cpp
@@ -72,9 +72,8 @@ void Widget::set_geometry(const Geometry &g)
        geom = g;
        if(size_changed)
        {
-               // TODO maybe rename this to on_size_change
-               on_geometry_change();
-               rebuild();
+               on_size_change();
+               mark_rebuild();
        }
 }
 
@@ -142,7 +141,7 @@ void Widget::update_style()
 
        on_style_change();
        signal_autosize_changed.emit();
-       rebuild();
+       mark_rebuild();
 }
 
 void Widget::set_tooltip(const string &t)
@@ -185,7 +184,39 @@ void Widget::set_state(State mask, State bits)
        State old_state = state;
        state = (state&~mask)|bits;
        if(style && style->compare_states(old_state, state))
+               mark_rebuild();
+}
+
+void Widget::set_animation_interval(const Time::TimeDelta &iv)
+{
+       if(iv<Time::zero)
+               throw invalid_argument("Widget::set_animation_interval");
+
+       anim_interval = iv;
+       signal_request_animation.emit(anim_interval);
+}
+
+void Widget::stop_animation()
+{
+       set_animation_interval(Time::zero);
+}
+
+void Widget::mark_rebuild()
+{
+       if(rebuild_needed)
+               return;
+
+       rebuild_needed = true;
+       signal_rebuild_needed.emit();
+}
+
+void Widget::rebuild_hierarchy()
+{
+       if(rebuild_needed)
+       {
+               rebuild_needed = false;
                rebuild();
+       }
 }
 
 void Widget::rebuild()
@@ -193,7 +224,7 @@ void Widget::rebuild()
        if(!style)
                return;
 
-       part_cache.begin_rebuild();
+       PartCache::Rebuild rebuild_cache(part_cache);
        const Style::PartSeq &parts = style->get_parts();
        for(Style::PartSeq::const_iterator i=parts.begin(); i!=parts.end(); ++i)
        {
@@ -202,7 +233,6 @@ void Widget::rebuild()
                else
                        rebuild_special(*i);
        }
-       part_cache.end_rebuild();
 }
 
 void Widget::rebuild_special(const Part &part)