CursorHeader: Use the same number format as the ruler.

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

diff --git a/pv/view/ruler.h b/pv/view/ruler.h
index f855185b904a75209ce521ec12c4399913bd6d5e..08a9c0e1fdf0128827bbc4c4c016fccd60d8fb2d 100644 (file)
--- a/pv/view/ruler.h
+++ b/pv/view/ruler.h
@@ -21,32 +21,53 @@
 #ifndef PULSEVIEW_PV_VIEW_RULER_H
 #define PULSEVIEW_PV_VIEW_RULER_H
 
-#include <QWidget>
+#include <memory>
+
+#include "marginwidget.h"
 
 namespace pv {
 namespace view {
 
-class View;
-
-class Ruler : public QWidget
+class Ruler : public MarginWidget
 {
        Q_OBJECT
 
 private:
+       static const int RulerHeight;
        static const int MinorTickSubdivision;
        static const int ScaleUnits[3];
 
-       static const QString SIPrefixes[9];
-       static const int FirstSIPrefixPower;
+       static const int HoverArrowSize;
 
 public:
        Ruler(View &parent);
 
+       /**
+        * Find a tick spacing and number formatting that does not cause
+        * the values to collide.
+        * @param p A QPainter used to determine the needed space for the values.
+        * @param scale A pv::view::View's scale.
+        * @param offset A pv::view::View's offset.
+        *
+        * @return The tick period to use in 'first' and the prefix in 'second'.
+        */
+       static std::pair<double, unsigned int> calculate_tick_spacing(
+               QPainter& p, double scale, double offset);
+
+public:
+       QSize sizeHint() const;
+
 private:
        void paintEvent(QPaintEvent *event);
 
 private:
-       View &_view;
+       /**
+        * Draw a hover arrow under the cursor position.
+        */
+       void draw_hover_mark(QPainter &p);
+
+private slots:
+       void hover_point_changed();
 };
 
 } // namespace view