RowItemOwner: Replaced parent notification scheme

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

diff --git a/pv/view/rowitem.h b/pv/view/rowitem.h
index 161e828917aec9ea8acb98ad8550898fd252c7c8..d068848a54be6faf30488187516354f7d650fdc0 100644 (file)
--- 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 {
@@ -28,7 +30,8 @@ namespace view {
 
 class RowItemOwner;
 
-class RowItem : public SelectableItem
+class RowItem : public SelectableItem,
+       public std::enable_shared_from_this<pv::view::RowItem>
 {
        Q_OBJECT
 
@@ -46,12 +49,27 @@ public:
        /**
         * Gets the vertical layout offset of this signal.
         */
-       int v_offset() const;
+       int layout_v_offset() const;
 
        /**
         * Sets the vertical layout offset of this signal.
         */
-       void set_v_offset(int v_offset);
+       void set_layout_v_offset(int v_offset);
+
+       /**
+        * Gets the vertical visual offset of this signal.
+        */
+       int visual_v_offset() const;
+
+       /**
+        * Sets the vertical visual offset of this signal.
+        */
+       void set_visual_v_offset(int v_offset);
+
+       /**
+        * Sets the visual and layout offset of this signal.
+        */
+       void force_to_v_offset(int v_offset);
 
        /**
         * Gets the owner this trace in the view trace hierachy.
@@ -65,9 +83,20 @@ public:
        void set_owner(pv::view::RowItemOwner *owner);
 
        /**
-        * Gets the y-offset of the axis.
+        * Gets the visual y-offset of the axis.
+        */
+       int get_visual_y() const;
+
+       /**
+        * Gets the drag point of the row item.
         */
-       int get_y() const;
+       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
@@ -113,13 +142,11 @@ public:
 public:
        virtual void hover_point_changed();
 
-Q_SIGNALS:
-       void appearance_changed();
-
 protected:
        pv::view::RowItemOwner *_owner;
 
-       int _v_offset;
+       int _layout_v_offset;
+       int _visual_v_offset;
 };
 
 } // namespace view