pv/view/logicsignal.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <extdef.h>
  22
  23 #include <math.h>
  24
  25 #include "logicsignal.h"
  26 #include "view.h"
  27 #include "pv/data/logic.h"
  28 #include "pv/data/logicsnapshot.h"
  29
  30 using namespace boost;
  31 using namespace std;
  32
  33 namespace pv {
  34 namespace view {
  35
  36 const float LogicSignal::Oversampling = 2.0f;
  37
  38 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  39 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  40 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  41
  42 const QColor LogicSignal::SignalColours[10] = {
  43         QColor(0x16, 0x19, 0x1A),       // Black
  44         QColor(0x8F, 0x52, 0x02),       // Brown
  45         QColor(0xCC, 0x00, 0x00),       // Red
  46         QColor(0xF5, 0x79, 0x00),       // Orange
  47         QColor(0xED, 0xD4, 0x00),       // Yellow
  48         QColor(0x73, 0xD2, 0x16),       // Green
  49         QColor(0x34, 0x65, 0xA4),       // Blue
  50         QColor(0x75, 0x50, 0x7B),       // Violet
  51         QColor(0x88, 0x8A, 0x85),       // Grey
  52         QColor(0xEE, 0xEE, 0xEC),       // White
  53 };
  54
  55 LogicSignal::LogicSignal(pv::SigSession &session, const sr_probe *const probe,
  56         shared_ptr<data::Logic> data) :
  57         Signal(session, probe),
  58         _data(data),
  59         _separator(this),
  60         _icon_trigger_none(":/icons/trigger-none.svg"),
  61         _trigger_none(_icon_trigger_none, tr("No trigger"), this),
  62         _icon_trigger_rising(":/icons/trigger-rising.svg"),
  63         _trigger_rising(_icon_trigger_rising,
  64                 tr("Trigger on rising edge"), this),
  65         _icon_trigger_high(":/icons/trigger-high.svg"),
  66         _trigger_high(_icon_trigger_high,
  67                 tr("Trigger on high level"), this),
  68         _icon_trigger_falling(":/icons/trigger-falling.svg"),
  69         _trigger_falling(_icon_trigger_falling,
  70                 tr("Trigger on falling edge"), this),
  71         _icon_trigger_low(":/icons/trigger-low.svg"),
  72         _trigger_low(_icon_trigger_low,
  73                 tr("Trigger on low level"), this),
  74         _icon_trigger_change(":/icons/trigger-change.svg"),
  75         _trigger_change(_icon_trigger_change,
  76                 tr("Trigger on rising or falling edge"), this)
  77 {
  78         _colour = SignalColours[probe->index % countof(SignalColours)];
  79
  80         _separator.setSeparator(true);
  81 }
  82
  83 LogicSignal::~LogicSignal()
  84 {
  85 }
  86
  87 const list<QAction*> LogicSignal::get_context_bar_actions()
  88 {
  89         list<QAction*> actions;
  90         actions.push_back(&_name_action);
  91
  92         actions.push_back(&_separator);
  93
  94         actions.push_back(&_trigger_none);
  95         actions.push_back(&_trigger_rising);
  96         actions.push_back(&_trigger_high);
  97         actions.push_back(&_trigger_falling);
  98         actions.push_back(&_trigger_low);
  99         actions.push_back(&_trigger_change);
 100
 101         return actions;
 102 }
 103
 104 void LogicSignal::paint(QPainter &p, int y, int left, int right,
 105                 double scale, double offset)
 106 {
 107         using pv::view::View;
 108
 109         QLineF *line;
 110
 111         vector< pair<int64_t, bool> > edges;
 112
 113         assert(_probe);
 114         assert(scale > 0);
 115         assert(_data);
 116         assert(right >= left);
 117
 118         if (!_probe->enabled)
 119                 return;
 120
 121         paint_axis(p, y, left, right);
 122
 123         const float high_offset = y - View::SignalHeight + 0.5f;
 124         const float low_offset = y + 0.5f;
 125
 126         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 127                 _data->get_snapshots();
 128         if (snapshots.empty())
 129                 return;
 130
 131         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 132                 snapshots.front();
 133
 134         double samplerate = _data->get_samplerate();
 135
 136         // Show sample rate as 1Hz when it is unknown
 137         if (samplerate == 0.0)
 138                 samplerate = 1.0;
 139
 140         const double pixels_offset = offset / scale;
 141         const double start_time = _data->get_start_time();
 142         const int64_t last_sample = snapshot->get_sample_count() - 1;
 143         const double samples_per_pixel = samplerate * scale;
 144         const double start = samplerate * (offset - start_time);
 145         const double end = start + samples_per_pixel * (right - left);
 146
 147         snapshot->get_subsampled_edges(edges,
 148                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 149                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 150                 samples_per_pixel / Oversampling, _probe->index);
 151         assert(edges.size() >= 2);
 152
 153         // Paint the edges
 154         const unsigned int edge_count = edges.size() - 2;
 155         QLineF *const edge_lines = new QLineF[edge_count];
 156         line = edge_lines;
 157
 158         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 159                         edges.begin() + 1;
 160                 i != edges.end() - 1; i++) {
 161                 const float x = ((*i).first / samples_per_pixel -
 162                         pixels_offset) + left;
 163                 *line++ = QLineF(x, high_offset, x, low_offset);
 164         }
 165
 166         p.setPen(EdgeColour);
 167         p.drawLines(edge_lines, edge_count);
 168         delete[] edge_lines;
 169
 170         // Paint the caps
 171         const unsigned int max_cap_line_count = (edges.size() - 1);
 172         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 173
 174         p.setPen(HighColour);
 175         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 176                 pixels_offset, left, high_offset);
 177         p.setPen(LowColour);
 178         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 179                 pixels_offset, left, low_offset);
 180
 181         delete[] cap_lines;
 182 }
 183
 184 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 185         vector< pair<int64_t, bool> > &edges, bool level,
 186         double samples_per_pixel, double pixels_offset, float x_offset,
 187         float y_offset)
 188 {
 189         QLineF *line = lines;
 190
 191         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 192                 edges.begin(); i != (edges.end() - 1); i++)
 193                 if ((*i).second == level) {
 194                         *line++ = QLineF(
 195                                 ((*i).first / samples_per_pixel -
 196                                         pixels_offset) + x_offset, y_offset,
 197                                 ((*(i+1)).first / samples_per_pixel -
 198                                         pixels_offset) + x_offset, y_offset);
 199                 }
 200
 201         p.drawLines(lines, line - lines);
 202 }
 203
 204 } // namespace view
 205 } // namespace pv