2 * This file is part of the sigrok 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 "logicdata.h"
26 #include "logicdatasnapshot.h"
27 #include "logicsignal.h"
29 using namespace boost;
32 const float LogicSignal::Margin = 10.0f;
34 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
35 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
36 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
38 const QColor LogicSignal::LogicSignalColours[10] = {
39 QColor(0x16, 0x19, 0x1A), // Black
40 QColor(0x8F, 0x52, 0x02), // Brown
41 QColor(0xCC, 0x00, 0x00), // Red
42 QColor(0xF5, 0x79, 0x00), // Orange
43 QColor(0xED, 0xD4, 0x00), // Yellow
44 QColor(0x73, 0xD2, 0x16), // Green
45 QColor(0x34, 0x65, 0xA4), // Blue
46 QColor(0x75, 0x50, 0x7B), // Violet
47 QColor(0x88, 0x8A, 0x85), // Grey
48 QColor(0xEE, 0xEE, 0xEC), // White
51 LogicSignal::LogicSignal(QString name, shared_ptr<LogicData> data,
55 _probe_index(probe_index)
57 assert(_probe_index >= 0);
60 void LogicSignal::paint(QPainter &p, const QRect &rect, double scale,
65 vector< pair<int64_t, bool> > edges;
70 const float high_offset = rect.top() + Margin;
71 const float low_offset = rect.bottom() - Margin;
73 const deque< shared_ptr<LogicDataSnapshot> > &snapshots =
74 _data->get_snapshots();
78 const shared_ptr<LogicDataSnapshot> &snapshot = snapshots.front();
80 const double pixels_offset = offset / scale;
81 const double samplerate = _data->get_samplerate();
82 const double start_time = _data->get_start_time();
83 const int64_t last_sample = snapshot->get_sample_count() - 1;
84 const double samples_per_pixel = samplerate * scale;
85 const double start = samplerate * (offset - start_time);
86 const double end = start + samples_per_pixel * rect.width();
88 snapshot->get_subsampled_edges(edges,
89 min(max((int64_t)floor(start), (int64_t)0), last_sample),
90 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
91 samples_per_pixel, _probe_index);
92 assert(edges.size() >= 2);
95 const unsigned int edge_count = edges.size() - 2;
96 QLineF *const edge_lines = new QLineF[edge_count];
99 for(vector<LogicDataSnapshot::EdgePair>::const_iterator i =
101 i != edges.end() - 1; i++) {
102 const int x = (int)((*i).first / samples_per_pixel -
103 pixels_offset) + rect.left();
104 *line++ = QLineF(x, high_offset, x, low_offset);
107 p.setPen(EdgeColour);
108 p.drawLines(edge_lines, edge_count);
112 const unsigned int max_cap_line_count = (edges.size() - 1);
113 QLineF *const cap_lines = new QLineF[max_cap_line_count];
115 p.setPen(HighColour);
116 paint_caps(p, cap_lines, edges, true, samples_per_pixel,
117 pixels_offset, rect.left(), high_offset);
119 paint_caps(p, cap_lines, edges, false, samples_per_pixel,
120 pixels_offset, rect.left(), low_offset);
125 int LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
126 vector< pair<int64_t, bool> > &edges, bool level,
127 double samples_per_pixel, double pixels_offset, int x_offset,
130 QLineF *line = lines;
132 for(vector<LogicDataSnapshot::EdgePair>::const_iterator i = edges.begin();
133 i != (edges.end() - 1); i++)
134 if((*i).second == level) {
136 (int)((*i).first / samples_per_pixel -
137 pixels_offset) + x_offset, y_offset,
138 (int)((*(i+1)).first / samples_per_pixel -
139 pixels_offset) + x_offset, y_offset);
142 p.drawLines(lines, line - lines);
145 QColor LogicSignal::get_colour() const
147 return LogicSignalColours[_probe_index % countof(LogicSignalColours)];
150 int LogicSignal::get_nominal_offset(const QRect &rect) const
152 return rect.bottom() - Margin;