Session: Fix issue #67 by improving error handling

[pulseview.git] / pv / views / trace / viewitem.hpp

diff --git a/pv/views/trace/viewitem.hpp b/pv/views/trace/viewitem.hpp
index 89a57e5edeb248b2dab9b59618cab71b9d268667..77c8665e17522a3d08c3e07f631b866078f21ed6 100644 (file)
--- a/pv/views/trace/viewitem.hpp
+++ b/pv/views/trace/viewitem.hpp
@@ -17,11 +17,12 @@
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PULSEVIEW_PV_VIEWITEM_HPP
-#define PULSEVIEW_PV_VIEWITEM_HPP
+#ifndef PULSEVIEW_PV_VIEWS_TRACE_VIEWITEM_HPP
+#define PULSEVIEW_PV_VIEWS_TRACE_VIEWITEM_HPP
 
 #include <list>
 
+#include <QMouseEvent>
 #include <QPen>
 #include <QPoint>
 
@@ -53,12 +54,16 @@ public:
 public:
        ViewItem();
 
-public:
        /**
         * Returns true if the item is visible and enabled.
         */
        virtual bool enabled() const = 0;
 
+       /**
+        * Returns true if the item may be selected.
+        */
+       virtual bool is_selectable(QPoint pos) const;
+
        /**
         * Returns true if the item has been selected by the user.
         */
@@ -72,7 +77,7 @@ public:
        /**
         * Returns true if the item may be dragged/moved.
         */
-       virtual bool is_draggable() const;
+       virtual bool is_draggable(QPoint pos) const;
 
        /**
         * Returns true if the item is being dragged.
@@ -146,7 +151,6 @@ public:
         */
        virtual void paint_fore(QPainter &p, ViewItemPaintParams &pp);
 
-public:
        /**
         * Gets the text color.
         * @remarks This color is computed by comparing the lightness
@@ -164,6 +168,14 @@ public:
 
        virtual void delete_pressed();
 
+       virtual void hover_point_changed(const QPoint &hp);
+
+       /**
+        * Handles left mouse button press events.
+        * @param event the mouse event that triggered this handler.
+        */
+       virtual void mouse_left_press_event(const QMouseEvent* event);
+
 protected:
        static QPen highlight_pen();
 
@@ -179,4 +191,4 @@ private:
 } // namespace views
 } // namespace pv
 
-#endif // PULSEVIEW_PV_VIEWITEM_HPP
+#endif // PULSEVIEW_PV_VIEWS_TRACE_VIEWITEM_HPP