+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <extdef.h>
-
-#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"
-#include "pv/data/analogsegment.hpp"
-#include "pv/data/signalbase.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;
-
-namespace pv {
-namespace view {
-
-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(0, 0, 0, 40*256/100);
-const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20*256/100);
-
-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<data::SignalBase> 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)
-{
- channel_->set_colour(SignalColours[channel_->index() % countof(SignalColours)]);
- update_scale();
-}
-
-shared_ptr<pv::data::SignalData> AnalogSignal::data() const
-{
- return data_;
-}
-
-shared_ptr<pv::data::Analog> AnalogSignal::analog_data() const
-{
- return data_;
-}
-
-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::AnalogSegment> &segment =
- segments.front();
-
- 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(floor(start).convert_to<int64_t>(),
- (int64_t)0), last_sample);
- 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, 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_);
-
- p.setPen(channel_->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.setRenderHint(QPainter::Antialiasing, false);
-
- p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
- for (int i = 1; i <= vdivs_; i++) {
- const float 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, 1, Qt::DashLine));
- for (int i = 0; i < vdivs_; i++) {
- const float 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));
- }
-
- p.setRenderHint(QPainter::Antialiasing, true);
-}
-
-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);
-
- p.setPen(channel_->colour());
-
- QPointF *points = new QPointF[sample_count];
- QPointF *point = points;
-
- for (int64_t sample = start; sample != end; sample++) {
- const float x = (sample / samples_per_pixel -
- pixels_offset) + left;
- *point++ = QPointF(x,
- y - samples[sample - start] * scale_);
- }
-
- p.drawPolyline(points, point - points);
-
- delete[] samples;
- delete[] points;
-}
-
-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(channel_->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_) {
- // 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();
- update_scale();
-
- if (owner_)
- owner_->row_item_appearance_changed(false, true);
-}
-
-} // namespace view
-} // namespace pv
projects / pulseview.git / blobdiff