Improve hover point signaling

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

diff --git a/pv/views/trace/analogsignal.cpp b/pv/views/trace/analogsignal.cpp
index c52379534166e1b6bfd37ab35271b99a3241c912..e26b203a2d197aa1161c3d63752ebf0ea3dcdfc9 100644 (file)
--- a/pv/views/trace/analogsignal.cpp
+++ b/pv/views/trace/analogsignal.cpp
@@ -89,7 +89,6 @@ AnalogSignal::AnalogSignal(
        Signal(session, base),
        scale_index_(4), // 20 per div
        scale_index_drag_offset_(0),
-       div_height_(3 * QFontMetrics(QApplication::font()).height()),
        pos_vdivs_(1),
        neg_vdivs_(1),
        resolution_(0),
@@ -103,6 +102,9 @@ AnalogSignal::AnalogSignal(
        connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
                this, SLOT(on_samples_added()));
 
+       GlobalSettings gs;
+       div_height_ = gs.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
+
        base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]);
        update_scale();
 }
@@ -120,6 +122,7 @@ void AnalogSignal::save_settings(QSettings &settings) const
        settings.setValue("conversion_type", conversion_type_);
        settings.setValue("display_type", display_type_);
        settings.setValue("autoranging", autoranging_);
+       settings.setValue("div_height", div_height_);
 }
 
 void AnalogSignal::restore_settings(QSettings &settings)
@@ -145,6 +148,17 @@ void AnalogSignal::restore_settings(QSettings &settings)
 
        if (settings.contains("autoranging"))
                autoranging_ = settings.value("autoranging").toBool();
+
+       if (settings.contains("div_height")) {
+               const int old_height = div_height_;
+               div_height_ = settings.value("div_height").toInt();
+
+               if ((div_height_ != old_height) && owner_) {
+                       // Call order is important, otherwise the lazy event handler won't work
+                       owner_->extents_changed(false, true);
+                       owner_->row_item_appearance_changed(false, true);
+               }
+       }
 }
 
 pair<int, int> AnalogSignal::v_extents() const
@@ -341,16 +355,16 @@ void AnalogSignal::paint_trace(QPainter &p,
 
        int64_t sample_count = min(points_count, TracePaintBlockSize);
        int64_t block_sample = 0;
-       const float *sample_block = segment->get_samples(start, start + sample_count);
+       float *sample_block = new float[TracePaintBlockSize];
+       segment->get_samples(start, start + sample_count, sample_block);
 
        const int w = 2;
        for (int64_t sample = start; sample != end; sample++, block_sample++) {
 
                if (block_sample == TracePaintBlockSize) {
                        block_sample = 0;
-                       delete[] sample_block;
                        sample_count = min(points_count - sample, TracePaintBlockSize);
-                       sample_block = segment->get_samples(sample, sample + sample_count);
+                       segment->get_samples(sample, sample + sample_count, sample_block);
                }
 
                const float x = (sample / samples_per_pixel -
@@ -665,7 +679,7 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 
        QFormLayout *const layout = new QFormLayout;
 
-       // Add the number of vdivs
+       // Add div-related settings
        pvdiv_sb_ = new QSpinBox(parent);
        pvdiv_sb_->setRange(0, MaximumVDivs);
        pvdiv_sb_->setValue(pos_vdivs_);
@@ -680,6 +694,15 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
                this, SLOT(on_neg_vdivs_changed(int)));
        layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
 
+       div_height_sb_ = new QSpinBox(parent);
+       div_height_sb_->setRange(20, 1000);
+       div_height_sb_->setSingleStep(5);
+       div_height_sb_->setSuffix(tr(" pixels"));
+       div_height_sb_->setValue(div_height_);
+       connect(div_height_sb_, SIGNAL(valueChanged(int)),
+               this, SLOT(on_div_height_changed(int)));
+       layout->addRow(tr("Div height"), div_height_sb_);
+
        // Add the vertical resolution
        resolution_cb_ = new QComboBox(parent);
 
@@ -720,7 +743,7 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
        cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
        conversion_cb_->setCurrentIndex(cur_idx);
 
-//     layout->addRow(tr("Conversion"), conversion_cb_);
+       layout->addRow(tr("Conversion"), conversion_cb_);
 
        connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_conversion_changed(int)));
@@ -735,7 +758,7 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
        cur_idx = display_type_cb_->findData(QVariant(display_type_));
        display_type_cb_->setCurrentIndex(cur_idx);
 
-//     layout->addRow(tr("Traces to show:"), display_type_cb_);
+       layout->addRow(tr("Traces to show:"), display_type_cb_);
 
        connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_display_type_changed(int)));
@@ -810,6 +833,18 @@ void AnalogSignal::on_neg_vdivs_changed(int vdivs)
        }
 }
 
+void AnalogSignal::on_div_height_changed(int height)
+{
+       div_height_ = height;
+       update_scale();
+
+       if (owner_) {
+               // Call order is important, otherwise the lazy event handler won't work
+               owner_->extents_changed(false, true);
+               owner_->row_item_appearance_changed(false, true);
+       }
+}
+
 void AnalogSignal::on_resolution_changed(int index)
 {
        scale_index_ = resolution_cb_->itemData(index).toInt();