X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fview%2Ftracetreeitemowner.cpp;h=528e0a033fb3aaec8d6477f1785edea050897328;hb=4df7756e87d3acfdd71603c2105c0ef54e58cc85;hp=af11ad2688b8d6f61c670d5398fd60ed470a4cf0;hpb=c373f82810ad9c5376a7370118de9dd587ee0e43;p=pulseview.git

diff --git a/pv/view/tracetreeitemowner.cpp b/pv/view/tracetreeitemowner.cpp
index af11ad26..528e0a03 100644
--- a/pv/view/tracetreeitemowner.cpp
+++ b/pv/view/tracetreeitemowner.cpp
@@ -35,14 +35,10 @@ using std::static_pointer_cast;
 using std::vector;
 
 namespace pv {
-namespace view {
+namespace views {
+namespace TraceView {
 
-vector< shared_ptr<ViewItem> >& TraceTreeItemOwner::child_items()
-{
-	return items_;
-}
-
-const vector< shared_ptr<ViewItem> >& TraceTreeItemOwner::child_items() const
+const ViewItemOwner::item_list& TraceTreeItemOwner::child_items() const
 {
 	return items_;
 }
@@ -92,13 +88,16 @@ void TraceTreeItemOwner::remove_child_item(std::shared_ptr<TraceTreeItem> item)
 
 pair<int, int> TraceTreeItemOwner::v_extents() const
 {
-	pair<int, int> extents(INT_MAX, INT_MIN);
+	bool has_children = false;
 
+	pair<int, int> extents(INT_MAX, INT_MIN);
 	for (const shared_ptr<TraceTreeItem> t : trace_tree_child_items()) {
 		assert(t);
 		if (!t->enabled())
 			continue;
 
+		has_children = true;
+
 		const int child_offset = t->layout_v_offset();
 		const pair<int, int> child_extents = t->v_extents();
 		extents.first = min(child_extents.first + child_offset,
@@ -107,12 +106,33 @@ pair<int, int> TraceTreeItemOwner::v_extents() const
 			extents.second);
 	}
 
+	if (!has_children)
+		extents = make_pair(0, 0);
+
 	return extents;
 }
 
+bool TraceTreeItemOwner::reassign_bgcolour_states(bool next_bgcolour_state)
+{
+	vector< shared_ptr<TraceTreeItem> > items = trace_tree_child_items();
+
+	// Sort items according to vertical position
+	sort(items.begin(), items.end(),
+		[](const shared_ptr<TraceTreeItem> a, const shared_ptr<TraceTreeItem> b) {
+		return a->layout_v_offset() > b->layout_v_offset(); });
+
+	for (const shared_ptr<TraceTreeItem> item : items) {
+		item->set_bgcolour_state(next_bgcolour_state);
+		next_bgcolour_state = !next_bgcolour_state;
+	}
+
+	return next_bgcolour_state;
+}
+
 void TraceTreeItemOwner::restack_items()
 {
 }
 
-} // view
-} // pv
+} // namespace TraceView
+} // namespace views
+} // namespace pv