X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fview%2Frowitem.h;h=1aafca4be3fbfee81b663532e9e6a887601d6f12;hb=a5d93c27b5bd6b95000e29c6cddac56ab254b289;hp=fb09edaa3cc76b52e00f3bca94c613efc7de8fbe;hpb=bd9a1f175057487cff3cb3cc62bc9595e19945be;p=pulseview.git

diff --git a/pv/view/rowitem.h b/pv/view/rowitem.h
index fb09eda..1aafca4 100644
--- a/pv/view/rowitem.h
+++ b/pv/view/rowitem.h
@@ -21,6 +21,8 @@
 #ifndef PULSEVIEW_PV_VIEW_HEADERITEM_H
 #define PULSEVIEW_PV_VIEW_HEADERITEM_H
 
+#include <memory>
+
 #include "selectableitem.h"
 
 namespace pv {
@@ -28,8 +30,11 @@ namespace view {
 
 class RowItemOwner;
 
-class RowItem : public SelectableItem
+class RowItem : public SelectableItem,
+	public std::enable_shared_from_this<pv::view::RowItem>
 {
+	Q_OBJECT
+
 public:
 	/**
 	 * Constructor.
@@ -67,6 +72,17 @@ public:
 	 */
 	int get_y() const;
 
+	/**
+	 * Gets the drag point of the row item.
+	 */
+	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.
@@ -106,11 +122,14 @@ public:
 	 * 	area.
 	 * @return Returns the rectangle of the signal label.
 	 */
-	virtual QRectF label_rect(int right) = 0;
+	virtual QRectF label_rect(int right) const = 0;
 
 public:
 	virtual void hover_point_changed();
 
+Q_SIGNALS:
+	void appearance_changed();
+
 protected:
 	pv::view::RowItemOwner *_owner;