Fix Ruler to respect the minimum dragging distance

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

diff --git a/pv/view/ruler.h b/pv/view/ruler.h
index f855185b904a75209ce521ec12c4399913bd6d5e..6f77cb4d9aa89e9f7463966bc92227a26f1b2f08 100644 (file)
--- a/pv/view/ruler.h
+++ b/pv/view/ruler.h
@@ -21,14 +21,17 @@
 #ifndef PULSEVIEW_PV_VIEW_RULER_H
 #define PULSEVIEW_PV_VIEW_RULER_H
 
-#include <QWidget>
+#include <boost/weak_ptr.hpp>
+
+#include "marginwidget.h"
 
 namespace pv {
 namespace view {
 
+class TimeMarker;
 class View;
 
-class Ruler : public QWidget
+class Ruler : public MarginWidget
 {
        Q_OBJECT
 
@@ -39,14 +42,36 @@ private:
        static const QString SIPrefixes[9];
        static const int FirstSIPrefixPower;
 
+       static const int HoverArrowSize;
+
 public:
        Ruler(View &parent);
 
+       void clear_selection();
+
+       static QString format_time(double t, unsigned int prefix,
+               unsigned precision = 0);
+
 private:
        void paintEvent(QPaintEvent *event);
 
+       void mouseMoveEvent(QMouseEvent *e);
+       void mousePressEvent(QMouseEvent *e);
+       void mouseReleaseEvent(QMouseEvent *);
+
+private:
+       /**
+        * Draw a hover arrow under the cursor position.
+        */
+       void draw_hover_mark(QPainter &p);
+
+private slots:
+       void hover_point_changed();
+
 private:
-       View &_view;
+       boost::weak_ptr<TimeMarker> _grabbed_marker;
+       QPoint _mouse_down_point;
+       bool _dragging;
 };
 
 } // namespace view