X-Git-Url: http://git.code-monkey.de/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fruler.cpp;h=6e74ddd0a29a272b2d1661b64d2054949767f040;hp=a085de29123cba27181414134c5e0673f2d642f7;hb=e23567ed84aa55e2a0c48252080058186f6b80e7;hpb=4bc9230c442427a27a3934ce5ff6ff4fdd4e0855

diff --git a/pv/views/trace/ruler.cpp b/pv/views/trace/ruler.cpp
index a085de2..6e74ddd 100644
--- a/pv/views/trace/ruler.cpp
+++ b/pv/views/trace/ruler.cpp
@@ -50,8 +50,8 @@ Ruler::Ruler(View &parent) :
 {
 	setMouseTracking(true);
 
-	connect(&view_, SIGNAL(hover_point_changed(QPoint)),
-		this, SLOT(hover_point_changed(QPoint)));
+	connect(&view_, SIGNAL(hover_point_changed(const QWidget*, QPoint)),
+		this, SLOT(on_hover_point_changed(const QWidget*, QPoint)));
 	connect(&view_, SIGNAL(offset_changed()),
 		this, SLOT(invalidate_tick_position_cache()));
 	connect(&view_, SIGNAL(scale_changed()),
@@ -114,7 +114,7 @@ QString Ruler::format_time_with_distance(
 		return pv::util::format_time_minutes(t, precision, sign);
 }
 
-pv::util::Timestamp Ruler::get_time_from_x_pos(uint32_t x)
+pv::util::Timestamp Ruler::get_time_from_x_pos(uint32_t x) const
 {
 	return view_.ruler_offset() + ((double)x + 0.5) * view_.scale();
 }
@@ -129,6 +129,10 @@ void Ruler::contextMenuEvent(QContextMenuEvent *event)
 	connect(create_marker, SIGNAL(triggered()), this, SLOT(on_createMarker()));
 	menu->addAction(create_marker);
 
+	QAction *const set_zero_position = new QAction(tr("Set as zero point"), this);
+	connect(set_zero_position, SIGNAL(triggered()), this, SLOT(on_setZeroPosition()));
+	menu->addAction(set_zero_position);
+
 	QAction *const toggle_hover_marker = new QAction(this);
 	connect(toggle_hover_marker, SIGNAL(triggered()), this, SLOT(on_toggleHoverMarker()));
 	menu->addAction(toggle_hover_marker);
@@ -304,8 +308,9 @@ TickPositions Ruler::calculate_tick_positions(
 	return tp;
 }
 
-void Ruler::hover_point_changed(const QPoint &hp)
+void Ruler::on_hover_point_changed(const QWidget* widget, const QPoint &hp)
 {
+	(void)widget;
 	(void)hp;
 
 	update();
@@ -318,7 +323,12 @@ void Ruler::invalidate_tick_position_cache()
 
 void Ruler::on_createMarker()
 {
-	view_.add_flag(get_time_from_x_pos(context_menu_x_pos_));
+	view_.add_flag(get_time_from_x_pos(mouse_down_point_.x()));
+}
+
+void Ruler::on_setZeroPosition()
+{
+	view_.set_zero_position(get_time_from_x_pos(mouse_down_point_.x()));
 }
 
 void Ruler::on_toggleHoverMarker()