AnalogSignal: Implement info text for V/div display

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

diff --git a/pv/view/logicsignal.cpp b/pv/view/logicsignal.cpp
index d529cabfb80eab75edcb8ccce37d1b5033dd2f1a..5584a1fcb70a0fb334e85b2d2165a6b965efabfe 100644 (file)
--- a/pv/view/logicsignal.cpp
+++ b/pv/view/logicsignal.cpp
@@ -25,6 +25,7 @@
 
 #include <algorithm>
 
+#include <QApplication>
 #include <QFormLayout>
 #include <QToolBar>
 
@@ -50,6 +51,7 @@ using std::vector;
 
 using sigrok::Channel;
 using sigrok::ConfigKey;
+using sigrok::Capability;
 using sigrok::Error;
 using sigrok::Trigger;
 using sigrok::TriggerStage;
@@ -59,9 +61,6 @@ using sigrok::TriggerMatchType;
 namespace pv {
 namespace view {
 
-const int LogicSignal::SignalHeight = 30;
-const int LogicSignal::SignalMargin = 10;
-
 const float LogicSignal::Oversampling = 2.0f;
 
 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
@@ -103,6 +102,7 @@ LogicSignal::LogicSignal(
        shared_ptr<Channel> channel,
        shared_ptr<data::Logic> data) :
        Signal(session, channel),
+       signal_height_(QFontMetrics(QApplication::font()).height() * 2),
        device_(device),
        data_(data),
        trigger_none_(nullptr),
@@ -114,7 +114,7 @@ LogicSignal::LogicSignal(
 {
        shared_ptr<Trigger> trigger;
 
-       colour_ = SignalColours[channel->index() % countof(SignalColours)];
+       set_colour(SignalColours[channel->index() % countof(SignalColours)]);
 
        /* Populate this channel's trigger setting with whatever we
         * find in the current session trigger, if anything. */
@@ -126,10 +126,6 @@ LogicSignal::LogicSignal(
                                        trigger_match_ = match->type();
 }
 
-LogicSignal::~LogicSignal()
-{
-}
-
 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 {
        return data_;
@@ -147,13 +143,21 @@ void LogicSignal::set_logic_data(std::shared_ptr<pv::data::Logic> data)
 
 std::pair<int, int> LogicSignal::v_extents() const
 {
-       return make_pair(-SignalHeight - SignalMargin, SignalMargin);
+       const int signal_margin =
+               QFontMetrics(QApplication::font()).height() / 2;
+       return make_pair(-signal_height_ - signal_margin, signal_margin);
 }
 
-void LogicSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
+int LogicSignal::scale_handle_offset() const
 {
-       if (channel_->enabled())
-               paint_axis(p, pp, get_visual_y());
+       return -signal_height_;
+}
+
+void LogicSignal::scale_handle_dragged(int offset)
+{
+       const int font_height = QFontMetrics(QApplication::font()).height();
+       const int units = (-offset / font_height);
+       signal_height_ = ((units < 1) ? 1 : units) * font_height;
 }
 
 void LogicSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
@@ -171,7 +175,7 @@ void LogicSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
        if (!channel_->enabled())
                return;
 
-       const float high_offset = y - SignalHeight + 0.5f;
+       const float high_offset = y - signal_height_ + 0.5f;
        const float low_offset = y + 0.5f;
 
        const deque< shared_ptr<pv::data::LogicSegment> > &segments =
@@ -236,7 +240,7 @@ void LogicSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
 void LogicSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
 {
        // Draw the trigger marker
-       if (!trigger_match_)
+       if (!trigger_match_ || !channel_->enabled())
                return;
 
        const int y = get_visual_y();
@@ -258,7 +262,7 @@ void LogicSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
                const QSize size = pixmap->size();
                const QPoint point(
                        pp.right() - size.width() - pad * 2,
-                       y - (SignalHeight + size.height()) / 2);
+                       y - (signal_height_ + size.height()) / 2);
 
                p.setPen(QPen(TriggerMarkerBackgroundColour.darker()));
                p.setBrush(TriggerMarkerBackgroundColour);
@@ -325,22 +329,14 @@ void LogicSignal::init_trigger_actions(QWidget *parent)
 const vector<int32_t> LogicSignal::get_trigger_types() const
 {
        const auto sr_dev = device_->device();
-       const auto keys = sr_dev->config_keys(ConfigKey::DEVICE_OPTIONS);
-       const auto iter = keys.find(ConfigKey::TRIGGER_MATCH);
-       if (iter != keys.end() &&
-               (*iter).second.find(sigrok::LIST) != (*iter).second.end()) {
-               try {
-                       const Glib::VariantContainerBase gvar =
-                               sr_dev->config_list(ConfigKey::TRIGGER_MATCH);
-                       return Glib::VariantBase::cast_dynamic<
-                               Glib::Variant<vector<int32_t>>>(gvar).get();
-               } catch (Error e) {
-                       // Failed to enumerate triggers
-                       (void)e;
-               }
+       if (sr_dev->config_check(ConfigKey::TRIGGER_MATCH, Capability::LIST)) {
+               const Glib::VariantContainerBase gvar =
+                       sr_dev->config_list(ConfigKey::TRIGGER_MATCH);
+               return Glib::VariantBase::cast_dynamic<
+                       Glib::Variant<vector<int32_t>>>(gvar).get();
+       } else {
+               return vector<int32_t>();
        }
-
-       return vector<int32_t>();
 }
 
 QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
@@ -434,8 +430,15 @@ void LogicSignal::modify_trigger()
                }
        }
 
-       if (trigger_match_)
-               new_trigger->add_stage()->add_match(channel_, trigger_match_);
+       if (trigger_match_) {
+               // Until we can let the user decide how to group trigger matches
+               // into stages, put all of the matches into a single stage --
+               // most devices only support a single trigger stage.
+               if (new_trigger->stages().empty())
+                       new_trigger->add_stage();
+
+               new_trigger->stages().back()->add_match(channel_, trigger_match_);
+       }
 
        session_.session()->set_trigger(
                new_trigger->stages().empty() ? nullptr : new_trigger);