Added cursor dragging

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

diff --git a/pv/view/ruler.cpp b/pv/view/ruler.cpp
index c5f194f2f76f4011009107659c2ad70790605e6f..bbafdb0f22cdce854fb52322a7a666b82bdac039 100644 (file)
--- a/pv/view/ruler.cpp
+++ b/pv/view/ruler.cpp
@@ -19,6 +19,8 @@
  */
 
 #include "ruler.h"
+
+#include "cursor.h"
 #include "view.h"
 #include "viewport.h"
 
@@ -31,6 +33,8 @@
 #include <QPainter>
 #include <QTextStream>
 
+using namespace std;
+
 namespace pv {
 namespace view {
 
@@ -45,7 +49,8 @@ const int Ruler::HoverArrowSize = 5;
 
 Ruler::Ruler(View &parent) :
        QWidget(&parent),
-       _view(parent)
+       _view(parent),
+       _grabbed_marker(NULL)
 {
        setMouseTracking(true);
 
@@ -123,16 +128,62 @@ void Ruler::paintEvent(QPaintEvent *event)
                division++;
        }
 
+       // Draw the cursors
+       draw_cursors(p);
+
        // Draw the hover mark
        draw_hover_mark(p);
 
        p.end();
 }
 
+void Ruler::mouseMoveEvent(QMouseEvent *e)
+{
+       if(!_grabbed_marker)
+               return;
+
+       _grabbed_marker->set_time(_view.offset() +
+               ((double)e->x() + 0.5) * _view.scale());
+}
+
+void Ruler::mousePressEvent(QMouseEvent *e)
+{
+       if(e->buttons() & Qt::LeftButton) {
+               _grabbed_marker = NULL;
+
+               if(_view.cursors_shown()) {
+                       std::pair<Cursor, Cursor> &cursors =
+                               _view.cursors();
+                       if(cursors.first.get_label_rect(
+                               rect()).contains(e->pos()))
+                               _grabbed_marker = &cursors.first;
+                       else if(cursors.second.get_label_rect(
+                               rect()).contains(e->pos()))
+                               _grabbed_marker = &cursors.second;
+               }
+       }
+}
+
+void Ruler::mouseReleaseEvent(QMouseEvent *)
+{
+       _grabbed_marker = NULL;
+}
+
+void Ruler::draw_cursors(QPainter &p)
+{
+       if(!_view.cursors_shown())
+               return;
+
+       const QRect r = rect();
+       pair<Cursor, Cursor> &cursors = _view.cursors();
+       cursors.first.paint_label(p, r);
+       cursors.second.paint_label(p, r);
+}
+
 void Ruler::draw_hover_mark(QPainter &p)
 {
        const int x = _view.hover_point().x();
-       if(x == -1)
+       if(x == -1 || _grabbed_marker)
                return;
 
        p.setPen(QPen(Qt::NoPen));