Provide a settings checkbox for showing zero at the trigger

[pulseview.git] / pv / views / trace / view.cpp

diff --git a/pv/views/trace/view.cpp b/pv/views/trace/view.cpp
index 156b3eef30276515ebbb59880cffbf3e9a37ccf1..292933e7eefa70abb5753a0a3e66f9614292415a 100644 (file)
--- a/pv/views/trace/view.cpp
+++ b/pv/views/trace/view.cpp
@@ -129,6 +129,7 @@ View::View(Session &session, bool is_main_view, QWidget *parent) :
        segment_selectable_(false),
        scale_(1e-3),
        offset_(0),
+       ruler_offset_(0),
        updating_scroll_(false),
        settings_restored_(false),
        header_was_shrunk_(false),
@@ -326,10 +327,18 @@ void View::save_settings(QSettings &settings) const
        settings.setValue("splitter_state", splitter_->saveState());
        settings.setValue("segment_display_mode", segment_display_mode_);
 
-       stringstream ss;
-       boost::archive::text_oarchive oa(ss);
-       oa << boost::serialization::make_nvp("offset", offset_);
-       settings.setValue("offset", QString::fromStdString(ss.str()));
+       {
+               stringstream ss;
+               boost::archive::text_oarchive oa(ss);
+               oa << boost::serialization::make_nvp("ruler_shift", ruler_shift_);
+               settings.setValue("ruler_shift", QString::fromStdString(ss.str()));
+       }
+       {
+               stringstream ss;
+               boost::archive::text_oarchive oa(ss);
+               oa << boost::serialization::make_nvp("offset", offset_);
+               settings.setValue("offset", QString::fromStdString(ss.str()));
+       }
 
        for (shared_ptr<Signal> signal : signals_) {
                settings.beginGroup(signal->base()->internal_name());
@@ -346,6 +355,17 @@ void View::restore_settings(QSettings &settings)
        if (settings.contains("scale"))
                set_scale(settings.value("scale").toDouble());
 
+       if (settings.contains("ruler_shift")) {
+               util::Timestamp shift;
+               stringstream ss;
+               ss << settings.value("ruler_shift").toString().toStdString();
+
+               boost::archive::text_iarchive ia(ss);
+               ia >> boost::serialization::make_nvp("ruler_shift", shift);
+
+               ruler_shift_ = shift;
+       }
+
        if (settings.contains("offset")) {
                util::Timestamp offset;
                stringstream ss;
@@ -354,6 +374,7 @@ void View::restore_settings(QSettings &settings)
                boost::archive::text_iarchive ia(ss);
                ia >> boost::serialization::make_nvp("offset", offset);
 
+               // This also updates ruler_offset_
                set_offset(offset);
        }
 
@@ -411,19 +432,27 @@ void View::set_scale(double scale)
        }
 }
 
-const Timestamp& View::offset() const
-{
-       return offset_;
-}
-
 void View::set_offset(const pv::util::Timestamp& offset)
 {
        if (offset_ != offset) {
                offset_ = offset;
+               ruler_offset_ = offset_ + ruler_shift_;
                offset_changed();
        }
 }
 
+// Returns the internal version of the time offset
+const Timestamp& View::offset() const
+{
+       return offset_;
+}
+
+// Returns the ruler version of the time offset
+const Timestamp& View::ruler_offset() const
+{
+       return ruler_offset_;
+}
+
 int View::owner_visual_v_offset() const
 {
        return -scrollarea_->verticalScrollBar()->sliderPosition();
@@ -794,6 +823,15 @@ void View::restack_all_trace_tree_items()
 
 void View::trigger_event(util::Timestamp location)
 {
+       // Set up ruler_shift if the Key_View_TriggerIsZeroTime option is set.
+       GlobalSettings settings;
+       bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
+
+       ruler_shift_ = (trigger_is_zero_time) ? (-location) : (0);
+       // Force an immediate update of both offsets
+       offset_ -= 0.001;
+       set_offset(offset_ + 0.001);
+
        trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
 }