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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::LogicSignalColours[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(QString name, shared_ptr<data::Logic> data, | |
56 | int probe_index) : | |
57 | Signal(name), | |
58 | _probe_index(probe_index), | |
59 | _data(data) | |
60 | { | |
61 | assert(_probe_index >= 0); | |
62 | _colour = LogicSignalColours[ | |
63 | _probe_index % countof(LogicSignalColours)]; | |
64 | } | |
65 | ||
66 | void LogicSignal::paint(QPainter &p, int y, int left, int right, | |
67 | double scale, double offset) | |
68 | { | |
69 | using pv::view::View; | |
70 | ||
71 | QLineF *line; | |
72 | ||
73 | vector< pair<int64_t, bool> > edges; | |
74 | ||
75 | assert(scale > 0); | |
76 | assert(_data); | |
77 | assert(right >= left); | |
78 | ||
79 | paint_axis(p, y, left, right); | |
80 | ||
81 | const float high_offset = y - View::SignalHeight + 0.5f; | |
82 | const float low_offset = y + 0.5f; | |
83 | ||
84 | const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots = | |
85 | _data->get_snapshots(); | |
86 | if (snapshots.empty()) | |
87 | return; | |
88 | ||
89 | const shared_ptr<pv::data::LogicSnapshot> &snapshot = | |
90 | snapshots.front(); | |
91 | ||
92 | double samplerate = _data->get_samplerate(); | |
93 | ||
94 | // Show sample rate as 1Hz when it is unknown | |
95 | if (samplerate == 0.0) | |
96 | samplerate = 1.0; | |
97 | ||
98 | const double pixels_offset = offset / scale; | |
99 | const double start_time = _data->get_start_time(); | |
100 | const int64_t last_sample = snapshot->get_sample_count() - 1; | |
101 | const double samples_per_pixel = samplerate * scale; | |
102 | const double start = samplerate * (offset - start_time); | |
103 | const double end = start + samples_per_pixel * (right - left); | |
104 | ||
105 | snapshot->get_subsampled_edges(edges, | |
106 | min(max((int64_t)floor(start), (int64_t)0), last_sample), | |
107 | min(max((int64_t)ceil(end), (int64_t)0), last_sample), | |
108 | samples_per_pixel / Oversampling, _probe_index); | |
109 | assert(edges.size() >= 2); | |
110 | ||
111 | // Paint the edges | |
112 | const unsigned int edge_count = edges.size() - 2; | |
113 | QLineF *const edge_lines = new QLineF[edge_count]; | |
114 | line = edge_lines; | |
115 | ||
116 | for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i = | |
117 | edges.begin() + 1; | |
118 | i != edges.end() - 1; i++) { | |
119 | const float x = ((*i).first / samples_per_pixel - | |
120 | pixels_offset) + left; | |
121 | *line++ = QLineF(x, high_offset, x, low_offset); | |
122 | } | |
123 | ||
124 | p.setPen(EdgeColour); | |
125 | p.drawLines(edge_lines, edge_count); | |
126 | delete[] edge_lines; | |
127 | ||
128 | // Paint the caps | |
129 | const unsigned int max_cap_line_count = (edges.size() - 1); | |
130 | QLineF *const cap_lines = new QLineF[max_cap_line_count]; | |
131 | ||
132 | p.setPen(HighColour); | |
133 | paint_caps(p, cap_lines, edges, true, samples_per_pixel, | |
134 | pixels_offset, left, high_offset); | |
135 | p.setPen(LowColour); | |
136 | paint_caps(p, cap_lines, edges, false, samples_per_pixel, | |
137 | pixels_offset, left, low_offset); | |
138 | ||
139 | delete[] cap_lines; | |
140 | } | |
141 | ||
142 | void LogicSignal::paint_caps(QPainter &p, QLineF *const lines, | |
143 | vector< pair<int64_t, bool> > &edges, bool level, | |
144 | double samples_per_pixel, double pixels_offset, float x_offset, | |
145 | float y_offset) | |
146 | { | |
147 | QLineF *line = lines; | |
148 | ||
149 | for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i = | |
150 | edges.begin(); i != (edges.end() - 1); i++) | |
151 | if ((*i).second == level) { | |
152 | *line++ = QLineF( | |
153 | ((*i).first / samples_per_pixel - | |
154 | pixels_offset) + x_offset, y_offset, | |
155 | ((*(i+1)).first / samples_per_pixel - | |
156 | pixels_offset) + x_offset, y_offset); | |
157 | } | |
158 | ||
159 | p.drawLines(lines, line - lines); | |
160 | } | |
161 | ||
162 | } // namespace view | |
163 | } // namespace pv |