ViewItem: Added a default label_rect implementation

diff --git a/pv/view/viewitem.cpp b/pv/view/viewitem.cpp
index 0c61578c0c2acfcb1517e40009a5a91675568caa..6ad6f6b64fbb515eb3426e13d3806754e8f862cc 100644 (file)
--- a/pv/view/viewitem.cpp
+++ b/pv/view/viewitem.cpp
@@ -64,6 +64,12 @@ void ViewItem::drag_release()
        drag_point_ = QPoint(INT_MIN, INT_MIN);
 }
 
+QRectF ViewItem::label_rect(const QRectF &rect) const
+{
+       (void)rect;
+       return QRectF();
+}
+
 QRectF ViewItem::hit_box_rect(const QRectF &rect) const
 {
        (void)rect;

diff --git a/pv/view/viewitem.hpp b/pv/view/viewitem.hpp
index ac404ceaa415c21c72a55834633569c99eb57e85..32b9f995fedb642783964b6287e68fbe36c9e131 100644 (file)
--- a/pv/view/viewitem.hpp
+++ b/pv/view/viewitem.hpp
@@ -99,8 +99,9 @@ public:
         * Computes the outline rectangle of a label.
         * @param rect the rectangle of the header area.
         * @return Returns the rectangle of the signal label.
+        * @remarks The default implementation returns an empty rectangle.
         */
-       virtual QRectF label_rect(const QRectF &rect) const = 0;
+       virtual QRectF label_rect(const QRectF &rect) const;
 
        /**
         * Computes the outline rectangle of the viewport hit-box.