#include <cstdlib>
#include <limits>
+#include <QApplication>
+
#include "analogsignal.hpp"
#include "pv/data/analog.hpp"
#include "pv/data/analogsegment.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;
AnalogSignal::AnalogSignal(
shared_ptr<data::Analog> data) :
Signal(session, channel),
data_(data),
- scale_index_(0),
- scale_index_drag_offset_(0)
-{
- 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
std::pair<int, int> AnalogSignal::v_extents() const
{
- const int h = NominalHeight / 2;
+ 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_) *
- NominalHeight / 4) - NominalHeight / 2;
+ h / 4) - h / 2;
}
void AnalogSignal::scale_handle_dragged(int offset)
{
+ const int h = vdivs_ * div_height_;
+
scale_index_ = scale_index_drag_offset_ -
- (offset + NominalHeight / 2) / (NominalHeight / 4);
+ (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())
+ 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 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();
pixels_offset, samples_per_pixel);
}
+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 float scale = this->scale();
const int64_t sample_count = end - start;
const float *const samples = segment->get_samples(start, end);
const float x = (sample / samples_per_pixel -
pixels_offset) + left;
*point++ = QPointF(x,
- y - samples[sample - start] * scale);
+ y - samples[sample - start] * scale_);
}
p.drawPolyline(points, point - points);
{
using pv::data::AnalogSegment;
- const float scale = this->scale();
-
AnalogSegment::EnvelopeSection e;
segment->get_envelope_section(e, start, end, samples_per_pixel);
// 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;
+ 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)
delete[] e.samples;
}
-float AnalogSignal::scale() const
+void AnalogSignal::update_scale()
{
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];
+
+ resolution_ = powf(10.0f, d.quot - offset) * seq[d.rem];
+ scale_ = div_height_ / resolution_;
}
} // namespace view
projects / pulseview.git / blobdiff