#include <cassert>
#include <cmath>
+#include <cstdlib>
+#include <limits>
+
+#include <QApplication>
+#include <QComboBox>
+#include <QFormLayout>
+#include <QGridLayout>
+#include <QLabel>
+#include <QSpinBox>
+#include <QString>
#include "analogsignal.hpp"
#include "pv/data/analog.hpp"
namespace pv {
namespace view {
-const int AnalogSignal::NominalHeight = 80;
-
const QColor AnalogSignal::SignalColours[4] = {
QColor(0xC4, 0xA0, 0x00), // Yellow
QColor(0x87, 0x20, 0x7A), // Magenta
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_(1.0f)
-{
- colour_ = SignalColours[channel_->index() % countof(SignalColours)];
-}
-
-AnalogSignal::~AnalogSignal()
+ 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
return data_;
}
-void AnalogSignal::set_scale(float scale)
+std::pair<int, int> AnalogSignal::v_extents() const
{
- scale_ = scale;
+ const int h = vdivs_ * div_height_;
+ return make_pair(-h, h);
}
-std::pair<int, int> AnalogSignal::v_extents() const
+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()
{
- return make_pair(-NominalHeight / 2, NominalHeight / 2);
+ scale_index_drag_offset_ = scale_index_;
+ update_scale();
}
void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
{
- if (channel_->enabled())
+ if (channel_->enabled()) {
+ Trace::paint_back(p, pp);
paint_axis(p, pp, get_visual_y());
+ }
}
void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
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())
segments.front();
const double pixels_offset = pp.pixels_offset();
- const double samplerate = segment->samplerate();
- const double start_time = segment->start_time();
+ 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 double start = samplerate * (pp.offset() - start_time);
- const double end = start + samples_per_pixel * pp.width();
+ 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) + 1,
+ const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
(int64_t)0), last_sample);
if (samples_per_pixel < EnvelopeThreshold)
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_);
+
+ 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,
QRectF *const rects = new QRectF[e.length];
QRectF *rect = rects;
- for(uint64_t sample = 0; sample < e.length-1; sample++) {
+ 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 =
const float t = y - min(s->min, (s+1)->max) * scale_;
float h = b - t;
- if(h >= 0.0f && h <= 1.0f)
+ if (h >= 0.0f && h <= 1.0f)
h = 1.0f;
- if(h <= 0.0f && h >= -1.0f)
+ if (h <= 0.0f && h >= -1.0f)
h = -1.0f;
*rect++ = QRectF(x, t, 1.0f, h);
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)
+{
+ scale_index_ = resolution_cb_->itemData(index).toInt();
+ update_scale();
+
+ if (owner_)
+ owner_->row_item_appearance_changed(false, true);
+}
+
} // namespace view
} // namespace pv
projects / pulseview.git / blobdiff