RowItem: Replaced fixed signal heights with extents

[pulseview.git] / pv / view / rowitem.h

diff --git a/pv/view/rowitem.h b/pv/view/rowitem.h
index 2133db878188ba906f17619d2d8a1c06fb250f06..1aafca4be3fbfee81b663532e9e6a887601d6f12 100644 (file)
--- a/pv/view/rowitem.h
+++ b/pv/view/rowitem.h
@@ -77,6 +77,12 @@ public:
         */
        QPoint point() const;
 
+       /**
+        * Computes the vertical extents of the contents of this row item.
+        * @return A pair containing the minimum and maximum y-values.
+        */
+       virtual std::pair<int, int> v_extents() const = 0;
+
        /**
         * Paints the background layer of the trace with a QPainter
         * @param p the QPainter to paint into.