2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
25 #include "logicsignal.h"
27 #include "pv/data/logic.h"
28 #include "pv/data/logicsnapshot.h"
30 using namespace boost;
36 const float LogicSignal::Oversampling = 2.0f;
38 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
39 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
40 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
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
55 LogicSignal::LogicSignal(QString name, shared_ptr<data::Logic> data,
58 _probe_index(probe_index),
61 assert(_probe_index >= 0);
62 _colour = SignalColours[_probe_index % countof(SignalColours)];
65 LogicSignal::~LogicSignal()
69 void LogicSignal::paint(QPainter &p, int y, int left, int right,
70 double scale, double offset)
76 vector< pair<int64_t, bool> > edges;
80 assert(right >= left);
82 paint_axis(p, y, left, right);
84 const float high_offset = y - View::SignalHeight + 0.5f;
85 const float low_offset = y + 0.5f;
87 const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
88 _data->get_snapshots();
89 if (snapshots.empty())
92 const shared_ptr<pv::data::LogicSnapshot> &snapshot =
95 double samplerate = _data->get_samplerate();
97 // Show sample rate as 1Hz when it is unknown
98 if (samplerate == 0.0)
101 const double pixels_offset = offset / scale;
102 const double start_time = _data->get_start_time();
103 const int64_t last_sample = snapshot->get_sample_count() - 1;
104 const double samples_per_pixel = samplerate * scale;
105 const double start = samplerate * (offset - start_time);
106 const double end = start + samples_per_pixel * (right - left);
108 snapshot->get_subsampled_edges(edges,
109 min(max((int64_t)floor(start), (int64_t)0), last_sample),
110 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
111 samples_per_pixel / Oversampling, _probe_index);
112 assert(edges.size() >= 2);
115 const unsigned int edge_count = edges.size() - 2;
116 QLineF *const edge_lines = new QLineF[edge_count];
119 for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
121 i != edges.end() - 1; i++) {
122 const float x = ((*i).first / samples_per_pixel -
123 pixels_offset) + left;
124 *line++ = QLineF(x, high_offset, x, low_offset);
127 p.setPen(EdgeColour);
128 p.drawLines(edge_lines, edge_count);
132 const unsigned int max_cap_line_count = (edges.size() - 1);
133 QLineF *const cap_lines = new QLineF[max_cap_line_count];
135 p.setPen(HighColour);
136 paint_caps(p, cap_lines, edges, true, samples_per_pixel,
137 pixels_offset, left, high_offset);
139 paint_caps(p, cap_lines, edges, false, samples_per_pixel,
140 pixels_offset, left, low_offset);
145 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
146 vector< pair<int64_t, bool> > &edges, bool level,
147 double samples_per_pixel, double pixels_offset, float x_offset,
150 QLineF *line = lines;
152 for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
153 edges.begin(); i != (edges.end() - 1); i++)
154 if ((*i).second == level) {
156 ((*i).first / samples_per_pixel -
157 pixels_offset) + x_offset, y_offset,
158 ((*(i+1)).first / samples_per_pixel -
159 pixels_offset) + x_offset, y_offset);
162 p.drawLines(lines, line - lines);