TraceGroup: Implemented stacking

[pulseview.git] / pv / view / tracegroup.cpp

diff --git a/pv/view/tracegroup.cpp b/pv/view/tracegroup.cpp
index 3058cec5158ba90e1979a82ba3dd9d790b43ef56..c2d3c0609db498e0fd2c7b164f2118b84799c6c3 100644 (file)
--- a/pv/view/tracegroup.cpp
+++ b/pv/view/tracegroup.cpp
@@ -116,7 +116,7 @@ QRectF TraceGroup::label_rect(int right) const
 {
        QRectF rect;
        for (const shared_ptr<RowItem> r : child_items())
 {
        QRectF rect;
        for (const shared_ptr<RowItem> r : child_items())

-               if (r)
+               if (r && r->enabled())

                        rect = rect.united(r->label_rect(right));
 
        return QRectF(rect.x() - Width - Padding, rect.y(),
                        rect = rect.united(r->label_rect(right));
 
        return QRectF(rect.x() - Width - Padding, rect.y(),


@@ -150,9 +150,44 @@ pv::widgets::Popup* TraceGroup::create_popup(QWidget *parent)
        return NULL;
 }
 
        return NULL;
 }
 

-int TraceGroup::owner_v_offset() const
+int TraceGroup::owner_visual_v_offset() const

 {
 {

-       return _owner ? layout_v_offset() + _owner->owner_v_offset() : 0;
+       return _owner ? visual_v_offset() + _owner->owner_visual_v_offset() : 0;
+}
+
+void TraceGroup::restack_items()
+{
+       vector< shared_ptr<RowItem> > items(
+               child_items().begin(), child_items().end());
+
+       // Sort by the centre line of the extents
+       stable_sort(items.begin(), items.end(),
+               [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) {
+                       const auto aext = a->v_extents();
+                       const auto bext = b->v_extents();
+                        return a->layout_v_offset() +
+                                       (aext.first + aext.second) / 2 <
+                               b->layout_v_offset() +
+                                       (bext.first + bext.second) / 2;
+               });
+
+       int total_offset = 0;
+       for (shared_ptr<RowItem> r : items) {
+               const pair<int, int> extents = r->v_extents();
+               if (extents.first == 0 && extents.second == 0)
+                       continue;
+
+               // We position disabled traces, so that they are close to the
+               // animation target positon should they be re-enabled
+               if (r->enabled())
+                       total_offset += -extents.first;
+
+               if (!r->dragging())
+                       r->set_layout_v_offset(total_offset);
+
+               if (r->enabled())
+                       total_offset += extents.second;
+       }

 }
 
 unsigned int TraceGroup::depth() const
 }
 
 unsigned int TraceGroup::depth() const