Added header time hover arrow

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

diff --git a/pv/view/ruler.cpp b/pv/view/ruler.cpp
index 97c0be6822506ffa1c3056493a629d14428dc6e2..c5f194f2f76f4011009107659c2ad70790605e6f 100644 (file)
--- a/pv/view/ruler.cpp
+++ b/pv/view/ruler.cpp
@@ -20,12 +20,14 @@
 
 #include "ruler.h"
 #include "view.h"
 
 #include "ruler.h"
 #include "view.h"

+#include "viewport.h"

 
 #include <extdef.h>
 
 #include <assert.h>
 #include <math.h>
 
 
 #include <extdef.h>
 
 #include <assert.h>
 #include <math.h>
 

+#include <QMouseEvent>

 #include <QPainter>
 #include <QTextStream>
 
 #include <QPainter>
 #include <QTextStream>
 


@@ -39,10 +41,16 @@ const QString Ruler::SIPrefixes[9] =
        {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
 const int Ruler::FirstSIPrefixPower = -15;
 
        {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
 const int Ruler::FirstSIPrefixPower = -15;
 

+const int Ruler::HoverArrowSize = 5;
+

 Ruler::Ruler(View &parent) :
        QWidget(&parent),
        _view(parent)
 {
 Ruler::Ruler(View &parent) :
        QWidget(&parent),
        _view(parent)
 {

+       setMouseTracking(true);
+
+       connect(&_view, SIGNAL(hover_point_changed()),
+               this, SLOT(hover_point_changed()));

 }
 
 void Ruler::paintEvent(QPaintEvent *event)
 }
 
 void Ruler::paintEvent(QPaintEvent *event)


@@ -115,8 +123,34 @@ void Ruler::paintEvent(QPaintEvent *event)
                division++;
        }
 
                division++;
        }
 

+       // Draw the hover mark
+       draw_hover_mark(p);
+

        p.end();
 }
 
        p.end();
 }
 

+void Ruler::draw_hover_mark(QPainter &p)
+{
+       const int x = _view.hover_point().x();
+       if(x == -1)
+               return;
+
+       p.setPen(QPen(Qt::NoPen));
+       p.setBrush(QBrush(QColor(Qt::black)));
+
+       const int b = height() - 1;
+       const QPointF points[] = {
+               QPointF(x, b),
+               QPointF(x - HoverArrowSize, b - HoverArrowSize),
+               QPointF(x + HoverArrowSize, b - HoverArrowSize)
+       };
+       p.drawPolygon(points, countof(points));
+}
+
+void Ruler::hover_point_changed()
+{
+       update();
+}
+

 } // namespace view
 } // namespace pv
 } // namespace view
 } // namespace pv