Implement MathSignal

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

diff --git a/pv/views/trace/view.cpp b/pv/views/trace/view.cpp
index cfafdc082ca6dc4d439c034a2e3b3a39a08faadd..47cb96b2da3ce6c2125a39472928e8e1a63cb1b0 100644 (file)
--- a/pv/views/trace/view.cpp
+++ b/pv/views/trace/view.cpp
@@ -41,27 +41,28 @@
 
 #include <libsigrokcxx/libsigrokcxx.hpp>
 
-#include "analogsignal.hpp"
-#include "header.hpp"
-#include "logicsignal.hpp"
-#include "ruler.hpp"
-#include "signal.hpp"
-#include "tracegroup.hpp"
-#include "triggermarker.hpp"
 #include "view.hpp"
-#include "viewport.hpp"
 
+#include "pv/globalsettings.hpp"
 #include "pv/metadata_obj.hpp"
+#include "pv/session.hpp"
+#include "pv/util.hpp"
 #include "pv/data/logic.hpp"
 #include "pv/data/logicsegment.hpp"
 #include "pv/data/signalbase.hpp"
 #include "pv/devices/device.hpp"
-#include "pv/globalsettings.hpp"
-#include "pv/session.hpp"
-#include "pv/util.hpp"
+#include "pv/views/trace/mathsignal.hpp"
+#include "pv/views/trace/analogsignal.hpp"
+#include "pv/views/trace/header.hpp"
+#include "pv/views/trace/logicsignal.hpp"
+#include "pv/views/trace/ruler.hpp"
+#include "pv/views/trace/signal.hpp"
+#include "pv/views/trace/tracegroup.hpp"
+#include "pv/views/trace/triggermarker.hpp"
+#include "pv/views/trace/viewport.hpp"
 
 #ifdef ENABLE_DECODE
-#include "decodetrace.hpp"
+#include "pv/views/trace/decodetrace.hpp"
 #endif
 
 using pv::data::SignalBase;
@@ -365,6 +366,10 @@ void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
                signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
                break;
 
+       case SignalBase::MathChannel:
+               signal = shared_ptr<Signal>(new MathSignal(session_, signalbase));
+               break;
+
        default:
                qDebug() << "Unknown signalbase type:" << signalbase->type();
                assert(false);
@@ -578,6 +583,9 @@ void View::set_scale(double scale)
 {
        if (scale_ != scale) {
                scale_ = scale;
+
+               update_view_range_metaobject();
+
                scale_changed();
        }
 }
@@ -588,20 +596,7 @@ void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
                offset_ = offset;
                ruler_offset_ = offset_ + zero_offset_;
 
-               const int w = viewport_->width();
-               if (w > 0) {
-                       const double samplerate = session_.get_samplerate();
-                       // Note: sample_num = time * samplerate
-                       // Note: samples_per_pixel = samplerate * scale
-                       int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
-                       int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
-                               (w * session_.get_samplerate() * scale_);
-
-                       MetadataObject* md_obj =
-                               session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
-                       md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
-                       md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
-               }
+               update_view_range_metaobject();
 
                offset_changed();
        }
@@ -787,7 +782,7 @@ void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
        for (const shared_ptr<Signal>& signal : signals_)
                signal->set_segment_display_mode(mode);
 
-       uint32_t last_segment = session_.get_segment_count() - 1;
+       uint32_t last_segment = session_.get_highest_segment_id();
 
        switch (mode) {
        case Trace::ShowLastSegmentOnly:
@@ -864,21 +859,31 @@ void View::zoom_fit(bool gui_state)
 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
 {
        assert(viewport_);
-       const int w = viewport_->width();
+       const uint64_t w = viewport_->width();
        if (w <= 0)
                return;
 
        const double samplerate = session_.get_samplerate();
+       const double samples_per_pixel = samplerate * scale_;
+       const uint64_t viewport_samples = w * samples_per_pixel;
 
        const uint64_t sample_delta = (end_sample - start_sample);
 
        // Note: We add 20% margin on the left and 5% on the right
-       const Timestamp delta = (sample_delta * 1.25) / samplerate;
-
-       const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
-       const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
-
-       set_scale_offset(scale.convert_to<double>(), offset);
+       const uint64_t ext_sample_delta = sample_delta * 1.25;
+
+       // Check if we can keep the zoom level and just center the supplied range
+       if (viewport_samples >= ext_sample_delta) {
+               // Note: offset is the left edge of the view so to center, we subtract half the view width
+               const int64_t sample_offset = (start_sample + (sample_delta / 2) - (viewport_samples / 2));
+               const Timestamp offset = sample_offset / samplerate;
+               set_scale_offset(scale_, offset);
+       } else {
+               const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
+               const Timestamp delta = ext_sample_delta / samplerate;
+               const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
+               set_scale_offset(scale.convert_to<double>(), offset);
+       }
 }
 
 void View::set_scale_offset(double scale, const Timestamp& offset)
@@ -928,7 +933,9 @@ pair<Timestamp, Timestamp> View::get_time_extents() const
        if (signals_.size() == 0)
                return make_pair(0, 0);
 
-       data.push_back(signals_.front()->data());
+       for (shared_ptr<Signal> s : signals_)
+               if (s->data() && (s->data()->segments().size() > 0))
+                       data.push_back(s->data());
 
        for (const shared_ptr<SignalData>& d : data) {
                const vector< shared_ptr<Segment> > segments = d->segments();
@@ -1425,6 +1432,8 @@ void View::resize_header_to_fit()
 void View::update_layout()
 {
        update_scroll();
+
+       update_view_range_metaobject();
 }
 
 TraceTreeItemOwner* View::find_prevalent_trace_group(
@@ -1602,6 +1611,31 @@ void View::resizeEvent(QResizeEvent* event)
        update_layout();
 }
 
+void View::update_view_range_metaobject() const
+{
+       const int w = viewport_->width();
+       if (w > 0) {
+               const double samplerate = session_.get_samplerate();
+               // Note: sample_num = time * samplerate
+               // Note: samples_per_pixel = samplerate * scale
+               const int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
+               const int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
+                       (w * session_.get_samplerate() * scale_);
+
+               MetadataObject* md_obj =
+                       session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
+
+               const int64_t old_start_sample = md_obj->value(MetadataValueStartSample).toLongLong();
+               const int64_t old_end_sample = md_obj->value(MetadataValueEndSample).toLongLong();
+
+               if (start_sample != old_start_sample)
+                       md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
+
+               if (end_sample != old_end_sample)
+                       md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
+       }
+}
+
 void View::update_hover_point()
 {
        // Determine signal that the mouse cursor is hovering over