#include <cassert>
#include <cmath>
+#include <cstdlib>
+#include <limits>
#include "analogsignal.hpp"
#include "pv/data/analog.hpp"
-#include "pv/data/analogsnapshot.hpp"
+#include "pv/data/analogsegment.hpp"
#include "pv/view/view.hpp"
-#include <libsigrok/libsigrok.hpp>
+#include <libsigrokcxx/libsigrokcxx.hpp>
using std::max;
using std::make_pair;
shared_ptr<data::Analog> data) :
Signal(session, channel),
data_(data),
- scale_(1.0f)
+ scale_index_(0),
+ scale_index_drag_offset_(0)
{
colour_ = SignalColours[channel_->index() % countof(SignalColours)];
}
return data_;
}
-void AnalogSignal::set_scale(float scale)
+std::pair<int, int> AnalogSignal::v_extents() const
{
- scale_ = scale;
+ const int h = NominalHeight / 2;
+ return make_pair(-h, h);
}
-std::pair<int, int> AnalogSignal::v_extents() const
+int AnalogSignal::scale_handle_offset() const
+{
+ return ((scale_index_drag_offset_ - scale_index_) *
+ NominalHeight / 4) - NominalHeight / 2;
+}
+
+void AnalogSignal::scale_handle_dragged(int offset)
+{
+ scale_index_ = scale_index_drag_offset_ -
+ (offset + NominalHeight / 2) / (NominalHeight / 4);
+}
+
+void AnalogSignal::scale_handle_drag_release()
{
- return make_pair(-NominalHeight / 2, NominalHeight / 2);
+ scale_index_drag_offset_ = scale_index_;
}
-void AnalogSignal::paint_back(QPainter &p, const RowItemPaintParams &pp)
+void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
{
if (channel_->enabled())
- paint_axis(p, get_visual_y(), pp.left(), pp.right());
+ paint_axis(p, pp, get_visual_y());
}
-void AnalogSignal::paint_mid(QPainter &p, const RowItemPaintParams &pp)
+void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
{
assert(data_);
assert(owner_);
const int y = get_visual_y();
- const View *const view = owner_->view();
- assert(view);
-
- const double scale = view->scale();
- assert(scale > 0);
-
- const double offset = view->offset();
-
if (!channel_->enabled())
return;
- const deque< shared_ptr<pv::data::AnalogSnapshot> > &snapshots =
- data_->get_snapshots();
- if (snapshots.empty())
+ 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_->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 * pp.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) + 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)
- paint_trace(p, snapshot, y, pp.left(),
+ paint_trace(p, segment, y, pp.left(),
start_sample, end_sample,
pixels_offset, samples_per_pixel);
else
- paint_envelope(p, snapshot, y, pp.left(),
+ paint_envelope(p, segment, y, pp.left(),
start_sample, end_sample,
pixels_offset, samples_per_pixel);
}
void AnalogSignal::paint_trace(QPainter &p,
- const shared_ptr<pv::data::AnalogSnapshot> &snapshot,
+ 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 = snapshot->get_samples(start, end);
+ const float *const samples = segment->get_samples(start, end);
assert(samples);
p.setPen(colour_);
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);
}
void AnalogSignal::paint_envelope(QPainter &p,
- const shared_ptr<pv::data::AnalogSnapshot> &snapshot,
+ 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::AnalogSnapshot;
+ using pv::data::AnalogSegment;
+
+ const float scale = this->scale();
- AnalogSnapshot::EnvelopeSection e;
- snapshot->get_envelope_section(e, start, end, samples_per_pixel);
+ AnalogSegment::EnvelopeSection e;
+ segment->get_envelope_section(e, start, end, samples_per_pixel);
if (e.length < 2)
return;
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 AnalogSnapshot::EnvelopeSample *const s =
+ 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_;
+ 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)
+ 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::scale() const
+{
+ 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];
+}
+
} // namespace view
} // namespace pv
projects / pulseview.git / blobdiff