X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fview%2Fviewitem.hpp;h=ac404ceaa415c21c72a55834633569c99eb57e85;hb=75663e3ab6656ed9fc39050d8ac6752450b6a4ad;hp=5b80c4e86efdb8fe3e9a95320bcd3aa232cd65a4;hpb=0f2f14a4307b1c5952e3cb683e5049ae33c0da1b;p=pulseview.git

diff --git a/pv/view/viewitem.hpp b/pv/view/viewitem.hpp
index 5b80c4e8..ac404cea 100644
--- a/pv/view/viewitem.hpp
+++ b/pv/view/viewitem.hpp
@@ -39,6 +39,8 @@ class Popup;
 
 namespace view {
 
+class ViewItemOwner;
+
 class ViewItem : public QObject
 {
 	Q_OBJECT
@@ -64,7 +66,7 @@ public:
 	/**
 	 * Selects or deselects the signal.
 	 */
-	void select(bool select = true);
+	virtual void select(bool select = true);
 
 	/**
 	 * Returns true if the item is being dragged.
@@ -79,7 +81,7 @@ public:
 	/**
 	 * Sets this item into the un-dragged state.
 	 */
-	void drag_release();
+	virtual void drag_release();
 
 	/**
 	 * Drags the item to a delta relative to the drag point.
@@ -114,7 +116,7 @@ public:
 	 * @param rect the rectangle of the header area.
 	 * @param hover true if the label is being hovered over by the mouse.
 	 */
-	virtual void paint_label(QPainter &p, const QRect &rect, bool hover) = 0;
+	virtual void paint_label(QPainter &p, const QRect &rect, bool hover);
 
 	/**
 	 * Paints the background layer of the item with a QPainter