#include <extdef.h>
-#include <math.h>
+#include <cassert>
+#include <cmath>
+#include <cstdlib>
+#include <limits>
-#include "analogsignal.h"
-#include "pv/data/analog.h"
-#include "pv/data/analogsnapshot.h"
+#include <QApplication>
+#include <QComboBox>
+#include <QFormLayout>
+#include <QGridLayout>
+#include <QLabel>
+#include <QSpinBox>
+#include <QString>
-using namespace boost;
-using namespace std;
+#include "analogsignal.hpp"
+#include "pv/data/analog.hpp"
+#include "pv/data/analogsegment.hpp"
+#include "pv/view/view.hpp"
+
+#include <libsigrokcxx/libsigrokcxx.hpp>
+
+using std::max;
+using std::make_pair;
+using std::min;
+using std::shared_ptr;
+using std::deque;
+
+using sigrok::Channel;
namespace pv {
namespace view {
-AnalogSignal::AnalogSignal(QString name, shared_ptr<data::Analog> data) :
- Signal(name),
- _data(data)
+const QColor AnalogSignal::SignalColours[4] = {
+ QColor(0xC4, 0xA0, 0x00), // Yellow
+ QColor(0x87, 0x20, 0x7A), // Magenta
+ QColor(0x20, 0x4A, 0x87), // Blue
+ QColor(0x4E, 0x9A, 0x06) // Green
+};
+
+const QColor AnalogSignal::GridMajorColor = QColor(0xB0, 0xB0, 0xB0);
+const QColor AnalogSignal::GridMinorColor = QColor(0xD0, 0xD0, 0xD0);
+
+const float AnalogSignal::EnvelopeThreshold = 256.0f;
+
+const int AnalogSignal::MaximumVDivs = 10;
+const int AnalogSignal::MinScaleIndex = -6;
+const int AnalogSignal::MaxScaleIndex = 7;
+
+const int AnalogSignal::InfoTextMarginRight = 20;
+const int AnalogSignal::InfoTextMarginBottom = 5;
+
+AnalogSignal::AnalogSignal(
+ pv::Session &session,
+ shared_ptr<Channel> channel,
+ shared_ptr<data::Analog> data) :
+ Signal(session, channel),
+ data_(data),
+ scale_index_(4), // 20 per div
+ scale_index_drag_offset_(0),
+ div_height_(3 * QFontMetrics(QApplication::font()).height()),
+ vdivs_(1),
+ resolution_(0)
+{
+ set_colour(SignalColours[channel_->index() % countof(SignalColours)]);
+ update_scale();
+}
+
+shared_ptr<pv::data::SignalData> AnalogSignal::data() const
{
- _colour = Qt::blue;
+ return data_;
}
-void AnalogSignal::paint(QPainter &p, const QRect &rect, double scale,
- double offset)
+shared_ptr<pv::data::Analog> AnalogSignal::analog_data() const
{
- assert(scale > 0);
- assert(_data);
+ return data_;
+}
- const deque< shared_ptr<pv::data::AnalogSnapshot> > &snapshots =
- _data->get_snapshots();
- if (snapshots.empty())
+std::pair<int, int> AnalogSignal::v_extents() const
+{
+ const int h = vdivs_ * div_height_;
+ return make_pair(-h, h);
+}
+
+int AnalogSignal::scale_handle_offset() const
+{
+ const int h = vdivs_ * div_height_;
+
+ return ((scale_index_drag_offset_ - scale_index_) *
+ h / 4) - h / 2;
+}
+
+void AnalogSignal::scale_handle_dragged(int offset)
+{
+ const int h = vdivs_ * div_height_;
+
+ scale_index_ = scale_index_drag_offset_ -
+ (offset + h / 2) / (h / 4);
+
+ update_scale();
+}
+
+void AnalogSignal::scale_handle_drag_release()
+{
+ scale_index_drag_offset_ = scale_index_;
+ update_scale();
+}
+
+void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
+{
+ if (channel_->enabled()) {
+ Trace::paint_back(p, pp);
+ paint_axis(p, pp, get_visual_y());
+ }
+}
+
+void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
+{
+ assert(data_);
+ assert(owner_);
+
+ const int y = get_visual_y();
+
+ if (!channel_->enabled())
+ return;
+
+ paint_grid(p, y, pp.left(), pp.right());
+
+ const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
+ data_->analog_segments();
+ if (segments.empty())
return;
- const shared_ptr<pv::data::AnalogSnapshot> &snapshot =
- snapshots.front();
+ const shared_ptr<pv::data::AnalogSegment> &segment =
+ segments.front();
- const double pixels_offset = offset / scale;
- const double samplerate = _data->get_samplerate();
- const double start_time = _data->get_start_time();
- const int64_t last_sample = snapshot->get_sample_count() - 1;
- const double samples_per_pixel = samplerate * scale;
- const double start = samplerate * (offset - start_time);
- const double end = start + samples_per_pixel * rect.width();
+ const double pixels_offset = pp.pixels_offset();
+ const double samplerate = max(1.0, segment->samplerate());
+ const pv::util::Timestamp& start_time = segment->start_time();
+ const int64_t last_sample = segment->get_sample_count() - 1;
+ const double samples_per_pixel = samplerate * pp.scale();
+ const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
+ const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
- const int64_t start_sample = min(max((int64_t)floor(start),
+ const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
(int64_t)0), last_sample);
- const int64_t end_sample = min(max((int64_t)ceil(end),
+ const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
(int64_t)0), last_sample);
- const int y_offset = rect.center().y();
+ if (samples_per_pixel < EnvelopeThreshold)
+ paint_trace(p, segment, y, pp.left(),
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+ else
+ paint_envelope(p, segment, y, pp.left(),
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+}
+
+void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
+{
+ if (!enabled())
+ return;
+
+ const int y = get_visual_y();
+
+ // Show the info section on the right side of the trace
+ const QString infotext = QString("%1 V/div").arg(resolution_);
- const float* samples = snapshot->get_samples();
+ p.setPen(colour_);
+ p.setFont(QApplication::font());
+
+ const QRectF bounding_rect = QRectF(pp.left(),
+ y + v_extents().first,
+ pp.width() - InfoTextMarginRight,
+ v_extents().second - v_extents().first - InfoTextMarginBottom);
+
+ p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
+}
+
+void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
+{
+ p.setPen(QPen(GridMajorColor, 0.5, Qt::DashLine));
+ for (int i = 1; i <= vdivs_; i++) {
+ const int dy = i * div_height_;
+ p.drawLine(QLineF(left, y - dy, right, y - dy));
+ p.drawLine(QLineF(left, y + dy, right, y + dy));
+ }
+
+ p.setPen(QPen(GridMinorColor, 0.5, Qt::DashLine));
+ for (int i = 0; i < vdivs_; i++) {
+ const int dy = i * div_height_;
+ const float dy25 = dy + (0.25 * div_height_);
+ const float dy50 = dy + (0.50 * div_height_);
+ const float dy75 = dy + (0.75 * div_height_);
+ p.drawLine(QLineF(left, y - dy25, right, y - dy25));
+ p.drawLine(QLineF(left, y + dy25, right, y + dy25));
+ p.drawLine(QLineF(left, y - dy50, right, y - dy50));
+ p.drawLine(QLineF(left, y + dy50, right, y + dy50));
+ p.drawLine(QLineF(left, y - dy75, right, y - dy75));
+ p.drawLine(QLineF(left, y + dy75, right, y + dy75));
+ }
+}
+
+void AnalogSignal::paint_trace(QPainter &p,
+ const shared_ptr<pv::data::AnalogSegment> &segment,
+ int y, int left, const int64_t start, const int64_t end,
+ const double pixels_offset, const double samples_per_pixel)
+{
+ const int64_t sample_count = end - start;
+
+ const float *const samples = segment->get_samples(start, end);
assert(samples);
- QPointF *points = new QPointF[end_sample - start_sample];
+ p.setPen(colour_);
+
+ QPointF *points = new QPointF[sample_count];
QPointF *point = points;
- for (int64_t sample = start_sample;
- sample != end_sample; sample++) {
+ for (int64_t sample = start; sample != end; sample++) {
const float x = (sample / samples_per_pixel -
- pixels_offset) + rect.left();
- const float y = samples[sample] + y_offset;
- *point++ = QPointF(x, y);
+ pixels_offset) + left;
+ *point++ = QPointF(x,
+ y - samples[sample - start] * scale_);
}
- p.drawPoints(points, point - points);
+ p.drawPolyline(points, point - points);
+ delete[] samples;
delete[] points;
}
-int AnalogSignal::get_nominal_offset(const QRect &rect) const
+void AnalogSignal::paint_envelope(QPainter &p,
+ const shared_ptr<pv::data::AnalogSegment> &segment,
+ int y, int left, const int64_t start, const int64_t end,
+ const double pixels_offset, const double samples_per_pixel)
+{
+ using pv::data::AnalogSegment;
+
+ AnalogSegment::EnvelopeSection e;
+ segment->get_envelope_section(e, start, end, samples_per_pixel);
+
+ if (e.length < 2)
+ return;
+
+ p.setPen(QPen(Qt::NoPen));
+ p.setBrush(colour_);
+
+ QRectF *const rects = new QRectF[e.length];
+ QRectF *rect = rects;
+
+ for (uint64_t sample = 0; sample < e.length-1; sample++) {
+ const float x = ((e.scale * sample + e.start) /
+ samples_per_pixel - pixels_offset) + left;
+ const AnalogSegment::EnvelopeSample *const s =
+ e.samples + sample;
+
+ // We overlap this sample with the next so that vertical
+ // gaps do not appear during steep rising or falling edges
+ const float b = y - max(s->max, (s+1)->min) * scale_;
+ const float t = y - min(s->min, (s+1)->max) * scale_;
+
+ float h = b - t;
+ if (h >= 0.0f && h <= 1.0f)
+ h = 1.0f;
+ if (h <= 0.0f && h >= -1.0f)
+ h = -1.0f;
+
+ *rect++ = QRectF(x, t, 1.0f, h);
+ }
+
+ p.drawRects(rects, e.length);
+
+ delete[] rects;
+ delete[] e.samples;
+}
+
+float AnalogSignal::get_resolution(int scale_index)
+{
+ const float seq[] = {1.0f, 2.0f, 5.0f};
+
+ const int offset = std::numeric_limits<int>::max() / (2 * countof(seq));
+ const std::div_t d = std::div(
+ (int)(scale_index + countof(seq) * offset),
+ countof(seq));
+
+ return powf(10.0f, d.quot - offset) * seq[d.rem];
+}
+
+void AnalogSignal::update_scale()
+{
+ resolution_ = get_resolution(scale_index_);
+ scale_ = div_height_ / resolution_;
+}
+
+void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
+{
+ // Add the standard options
+ Signal::populate_popup_form(parent, form);
+
+ QFormLayout *const layout = new QFormLayout;
+
+ // Add the number of vdivs
+ QSpinBox *vdiv_sb = new QSpinBox(parent);
+ vdiv_sb->setRange(1, MaximumVDivs);
+ vdiv_sb->setValue(vdivs_);
+ connect(vdiv_sb, SIGNAL(valueChanged(int)),
+ this, SLOT(on_vdivs_changed(int)));
+ layout->addRow(tr("Number of vertical divs"), vdiv_sb);
+
+ // Add the vertical resolution
+ resolution_cb_ = new QComboBox(parent);
+
+ for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
+ const QString label = QString("%1").arg(get_resolution(i));
+ resolution_cb_->insertItem(0, label, QVariant(i));
+ }
+
+ const int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
+ resolution_cb_->setCurrentIndex(cur_idx);
+
+ connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
+ this, SLOT(on_resolution_changed(int)));
+
+ QGridLayout *const vdiv_layout = new QGridLayout;
+ QLabel *const vdiv_unit = new QLabel(tr("V/div"));
+ vdiv_layout->addWidget(resolution_cb_, 0, 0);
+ vdiv_layout->addWidget(vdiv_unit, 0, 1);
+
+ layout->addRow(tr("Vertical resolution"), vdiv_layout);
+
+ form->addRow(layout);
+}
+
+void AnalogSignal::on_vdivs_changed(int vdivs)
+{
+ vdivs_ = vdivs;
+
+ if (owner_)
+ owner_->extents_changed(false, true);
+}
+
+void AnalogSignal::on_resolution_changed(int index)
{
- return rect.center().y();
+ scale_index_ = resolution_cb_->itemData(index).toInt();
+ update_scale();
+
+ if (owner_)
+ owner_->row_item_appearance_changed(false, true);
}
} // namespace view
projects / pulseview.git / blobdiff