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aba1dd16 JH |
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 | ||
3b68d03d JH |
23 | #include <cassert> |
24 | #include <cmath> | |
8a2fafcc JH |
25 | #include <cstdlib> |
26 | #include <limits> | |
aba1dd16 | 27 | |
37b9fed4 | 28 | #include <QApplication> |
368a37c2 | 29 | #include <QComboBox> |
4cffac16 | 30 | #include <QFormLayout> |
368a37c2 SA |
31 | #include <QGridLayout> |
32 | #include <QLabel> | |
4cffac16 | 33 | #include <QSpinBox> |
03cc651d | 34 | #include <QString> |
37b9fed4 | 35 | |
2acdb232 JH |
36 | #include "analogsignal.hpp" |
37 | #include "pv/data/analog.hpp" | |
f3d66e52 | 38 | #include "pv/data/analogsegment.hpp" |
bf0edd2b | 39 | #include "pv/data/signalbase.hpp" |
2acdb232 | 40 | #include "pv/view/view.hpp" |
aba1dd16 | 41 | |
fe3a1c21 | 42 | #include <libsigrokcxx/libsigrokcxx.hpp> |
e8d00928 | 43 | |
819f4c25 | 44 | using std::max; |
a5d93c27 | 45 | using std::make_pair; |
819f4c25 | 46 | using std::min; |
f9abf97e | 47 | using std::shared_ptr; |
819f4c25 | 48 | using std::deque; |
aba1dd16 JH |
49 | |
50 | namespace pv { | |
f4e57597 SA |
51 | namespace views { |
52 | namespace TraceView { | |
aba1dd16 | 53 | |
568b90d4 JH |
54 | const QColor AnalogSignal::SignalColours[4] = { |
55 | QColor(0xC4, 0xA0, 0x00), // Yellow | |
56 | QColor(0x87, 0x20, 0x7A), // Magenta | |
57 | QColor(0x20, 0x4A, 0x87), // Blue | |
58 | QColor(0x4E, 0x9A, 0x06) // Green | |
59 | }; | |
60 | ||
46a0cadc SA |
61 | const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40*256/100); |
62 | const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20*256/100); | |
37b9fed4 | 63 | |
7c68ddae JH |
64 | const float AnalogSignal::EnvelopeThreshold = 256.0f; |
65 | ||
4cffac16 | 66 | const int AnalogSignal::MaximumVDivs = 10; |
368a37c2 SA |
67 | const int AnalogSignal::MinScaleIndex = -6; |
68 | const int AnalogSignal::MaxScaleIndex = 7; | |
4cffac16 | 69 | |
03cc651d SA |
70 | const int AnalogSignal::InfoTextMarginRight = 20; |
71 | const int AnalogSignal::InfoTextMarginBottom = 5; | |
72 | ||
b86aa8f4 | 73 | AnalogSignal::AnalogSignal( |
2b81ae46 | 74 | pv::Session &session, |
cbd2a2de | 75 | shared_ptr<data::SignalBase> base) : |
73a25a6e | 76 | Signal(session, base), |
834a4f1b | 77 | scale_index_(4), // 20 per div |
37b9fed4 SA |
78 | scale_index_drag_offset_(0), |
79 | div_height_(3 * QFontMetrics(QApplication::font()).height()), | |
834a4f1b SA |
80 | vdivs_(1), |
81 | resolution_(0) | |
aba1dd16 | 82 | { |
73a25a6e | 83 | base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]); |
834a4f1b | 84 | update_scale(); |
aba1dd16 JH |
85 | } |
86 | ||
3009b5b3 JH |
87 | shared_ptr<pv::data::SignalData> AnalogSignal::data() const |
88 | { | |
cbd2a2de | 89 | return base_->analog_data(); |
9a0cd293 JH |
90 | } |
91 | ||
3a21afa6 SA |
92 | void AnalogSignal::save_settings(QSettings &settings) const |
93 | { | |
94 | settings.setValue("vdivs", vdivs_); | |
95 | settings.setValue("scale_index", scale_index_); | |
96 | } | |
97 | ||
98 | void AnalogSignal::restore_settings(QSettings &settings) | |
99 | { | |
100 | if (settings.contains("vdivs")) | |
101 | vdivs_ = settings.value("vdivs").toInt(); | |
102 | ||
103 | if (settings.contains("scale_index")) { | |
104 | scale_index_ = settings.value("scale_index").toInt(); | |
105 | update_scale(); | |
106 | } | |
107 | } | |
108 | ||
a5d93c27 JH |
109 | std::pair<int, int> AnalogSignal::v_extents() const |
110 | { | |
37b9fed4 | 111 | const int h = vdivs_ * div_height_; |
8a2fafcc | 112 | return make_pair(-h, h); |
a5d93c27 JH |
113 | } |
114 | ||
214470fc JH |
115 | int AnalogSignal::scale_handle_offset() const |
116 | { | |
37b9fed4 SA |
117 | const int h = vdivs_ * div_height_; |
118 | ||
8a2fafcc | 119 | return ((scale_index_drag_offset_ - scale_index_) * |
37b9fed4 | 120 | h / 4) - h / 2; |
214470fc JH |
121 | } |
122 | ||
123 | void AnalogSignal::scale_handle_dragged(int offset) | |
124 | { | |
37b9fed4 SA |
125 | const int h = vdivs_ * div_height_; |
126 | ||
8a2fafcc | 127 | scale_index_ = scale_index_drag_offset_ - |
37b9fed4 | 128 | (offset + h / 2) / (h / 4); |
834a4f1b SA |
129 | |
130 | update_scale(); | |
8a2fafcc JH |
131 | } |
132 | ||
133 | void AnalogSignal::scale_handle_drag_release() | |
134 | { | |
135 | scale_index_drag_offset_ = scale_index_; | |
834a4f1b | 136 | update_scale(); |
214470fc JH |
137 | } |
138 | ||
5b5fa4da | 139 | void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp) |
fe08b6e8 | 140 | { |
73a25a6e | 141 | if (base_->enabled()) { |
99af6802 | 142 | Trace::paint_back(p, pp); |
97904bf7 | 143 | paint_axis(p, pp, get_visual_y()); |
99af6802 | 144 | } |
fe08b6e8 JH |
145 | } |
146 | ||
5b5fa4da | 147 | void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp) |
aba1dd16 | 148 | { |
cbd2a2de | 149 | assert(base_->analog_data()); |
8dbbc7f0 | 150 | assert(owner_); |
a8acb46e | 151 | |
be9e7b4b | 152 | const int y = get_visual_y(); |
01fd3263 | 153 | |
73a25a6e | 154 | if (!base_->enabled()) |
cec48d16 JH |
155 | return; |
156 | ||
37b9fed4 SA |
157 | paint_grid(p, y, pp.left(), pp.right()); |
158 | ||
f3d66e52 | 159 | const deque< shared_ptr<pv::data::AnalogSegment> > &segments = |
cbd2a2de | 160 | base_->analog_data()->analog_segments(); |
f3d66e52 | 161 | if (segments.empty()) |
a8acb46e JH |
162 | return; |
163 | ||
f3d66e52 JH |
164 | const shared_ptr<pv::data::AnalogSegment> &segment = |
165 | segments.front(); | |
a8acb46e | 166 | |
4c8a6a6d | 167 | const double pixels_offset = pp.pixels_offset(); |
69e33a1b | 168 | const double samplerate = max(1.0, segment->samplerate()); |
60d9b99a | 169 | const pv::util::Timestamp& start_time = segment->start_time(); |
f3d66e52 | 170 | const int64_t last_sample = segment->get_sample_count() - 1; |
4c8a6a6d | 171 | const double samples_per_pixel = samplerate * pp.scale(); |
60d9b99a JS |
172 | const pv::util::Timestamp start = samplerate * (pp.offset() - start_time); |
173 | const pv::util::Timestamp end = start + samples_per_pixel * pp.width(); | |
a8acb46e | 174 | |
60d9b99a | 175 | const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(), |
a8acb46e | 176 | (int64_t)0), last_sample); |
60d9b99a | 177 | const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(), |
a8acb46e JH |
178 | (int64_t)0), last_sample); |
179 | ||
7c68ddae | 180 | if (samples_per_pixel < EnvelopeThreshold) |
f3d66e52 | 181 | paint_trace(p, segment, y, pp.left(), |
7c68ddae JH |
182 | start_sample, end_sample, |
183 | pixels_offset, samples_per_pixel); | |
184 | else | |
f3d66e52 | 185 | paint_envelope(p, segment, y, pp.left(), |
7c68ddae JH |
186 | start_sample, end_sample, |
187 | pixels_offset, samples_per_pixel); | |
188 | } | |
189 | ||
03cc651d SA |
190 | void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp) |
191 | { | |
192 | if (!enabled()) | |
193 | return; | |
194 | ||
195 | const int y = get_visual_y(); | |
196 | ||
197 | // Show the info section on the right side of the trace | |
198 | const QString infotext = QString("%1 V/div").arg(resolution_); | |
199 | ||
73a25a6e | 200 | p.setPen(base_->colour()); |
03cc651d SA |
201 | p.setFont(QApplication::font()); |
202 | ||
203 | const QRectF bounding_rect = QRectF(pp.left(), | |
204 | y + v_extents().first, | |
205 | pp.width() - InfoTextMarginRight, | |
206 | v_extents().second - v_extents().first - InfoTextMarginBottom); | |
207 | ||
208 | p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext); | |
209 | } | |
210 | ||
37b9fed4 SA |
211 | void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right) |
212 | { | |
46a0cadc SA |
213 | p.setRenderHint(QPainter::Antialiasing, false); |
214 | ||
215 | p.setPen(QPen(GridMajorColor, 1, Qt::DashLine)); | |
37b9fed4 | 216 | for (int i = 1; i <= vdivs_; i++) { |
46a0cadc | 217 | const float dy = i * div_height_; |
37b9fed4 SA |
218 | p.drawLine(QLineF(left, y - dy, right, y - dy)); |
219 | p.drawLine(QLineF(left, y + dy, right, y + dy)); | |
220 | } | |
221 | ||
46a0cadc | 222 | p.setPen(QPen(GridMinorColor, 1, Qt::DashLine)); |
37b9fed4 | 223 | for (int i = 0; i < vdivs_; i++) { |
46a0cadc | 224 | const float dy = i * div_height_; |
37b9fed4 SA |
225 | const float dy25 = dy + (0.25 * div_height_); |
226 | const float dy50 = dy + (0.50 * div_height_); | |
227 | const float dy75 = dy + (0.75 * div_height_); | |
228 | p.drawLine(QLineF(left, y - dy25, right, y - dy25)); | |
229 | p.drawLine(QLineF(left, y + dy25, right, y + dy25)); | |
230 | p.drawLine(QLineF(left, y - dy50, right, y - dy50)); | |
231 | p.drawLine(QLineF(left, y + dy50, right, y + dy50)); | |
232 | p.drawLine(QLineF(left, y - dy75, right, y - dy75)); | |
233 | p.drawLine(QLineF(left, y + dy75, right, y + dy75)); | |
234 | } | |
46a0cadc SA |
235 | |
236 | p.setRenderHint(QPainter::Antialiasing, true); | |
37b9fed4 SA |
237 | } |
238 | ||
7c68ddae | 239 | void AnalogSignal::paint_trace(QPainter &p, |
f3d66e52 | 240 | const shared_ptr<pv::data::AnalogSegment> &segment, |
7c68ddae JH |
241 | int y, int left, const int64_t start, const int64_t end, |
242 | const double pixels_offset, const double samples_per_pixel) | |
243 | { | |
244 | const int64_t sample_count = end - start; | |
245 | ||
f3d66e52 | 246 | const float *const samples = segment->get_samples(start, end); |
a8acb46e JH |
247 | assert(samples); |
248 | ||
73a25a6e | 249 | p.setPen(base_->colour()); |
7c68ddae | 250 | |
d3758367 | 251 | QPointF *points = new QPointF[sample_count]; |
a8acb46e JH |
252 | QPointF *point = points; |
253 | ||
7c68ddae | 254 | for (int64_t sample = start; sample != end; sample++) { |
a8acb46e | 255 | const float x = (sample / samples_per_pixel - |
2658961b | 256 | pixels_offset) + left; |
d3758367 | 257 | *point++ = QPointF(x, |
834a4f1b | 258 | y - samples[sample - start] * scale_); |
a8acb46e JH |
259 | } |
260 | ||
306d43a7 | 261 | p.drawPolyline(points, point - points); |
a8acb46e | 262 | |
7c68ddae | 263 | delete[] samples; |
a8acb46e | 264 | delete[] points; |
aba1dd16 JH |
265 | } |
266 | ||
7c68ddae | 267 | void AnalogSignal::paint_envelope(QPainter &p, |
f3d66e52 | 268 | const shared_ptr<pv::data::AnalogSegment> &segment, |
7c68ddae JH |
269 | int y, int left, const int64_t start, const int64_t end, |
270 | const double pixels_offset, const double samples_per_pixel) | |
271 | { | |
f3d66e52 | 272 | using pv::data::AnalogSegment; |
7c68ddae | 273 | |
f3d66e52 JH |
274 | AnalogSegment::EnvelopeSection e; |
275 | segment->get_envelope_section(e, start, end, samples_per_pixel); | |
7c68ddae JH |
276 | |
277 | if (e.length < 2) | |
278 | return; | |
279 | ||
819f4c25 | 280 | p.setPen(QPen(Qt::NoPen)); |
73a25a6e | 281 | p.setBrush(base_->colour()); |
7c68ddae JH |
282 | |
283 | QRectF *const rects = new QRectF[e.length]; | |
284 | QRectF *rect = rects; | |
285 | ||
f3290553 | 286 | for (uint64_t sample = 0; sample < e.length-1; sample++) { |
7c68ddae JH |
287 | const float x = ((e.scale * sample + e.start) / |
288 | samples_per_pixel - pixels_offset) + left; | |
f3d66e52 | 289 | const AnalogSegment::EnvelopeSample *const s = |
7c68ddae JH |
290 | e.samples + sample; |
291 | ||
292 | // We overlap this sample with the next so that vertical | |
293 | // gaps do not appear during steep rising or falling edges | |
834a4f1b SA |
294 | const float b = y - max(s->max, (s+1)->min) * scale_; |
295 | const float t = y - min(s->min, (s+1)->max) * scale_; | |
7c68ddae JH |
296 | |
297 | float h = b - t; | |
f3290553 | 298 | if (h >= 0.0f && h <= 1.0f) |
7c68ddae | 299 | h = 1.0f; |
f3290553 | 300 | if (h <= 0.0f && h >= -1.0f) |
7c68ddae JH |
301 | h = -1.0f; |
302 | ||
303 | *rect++ = QRectF(x, t, 1.0f, h); | |
304 | } | |
305 | ||
306 | p.drawRects(rects, e.length); | |
307 | ||
308 | delete[] rects; | |
309 | delete[] e.samples; | |
310 | } | |
311 | ||
368a37c2 | 312 | float AnalogSignal::get_resolution(int scale_index) |
8a2fafcc JH |
313 | { |
314 | const float seq[] = {1.0f, 2.0f, 5.0f}; | |
834a4f1b | 315 | |
8a2fafcc JH |
316 | const int offset = std::numeric_limits<int>::max() / (2 * countof(seq)); |
317 | const std::div_t d = std::div( | |
368a37c2 | 318 | (int)(scale_index + countof(seq) * offset), |
8a2fafcc | 319 | countof(seq)); |
834a4f1b | 320 | |
368a37c2 SA |
321 | return powf(10.0f, d.quot - offset) * seq[d.rem]; |
322 | } | |
323 | ||
324 | void AnalogSignal::update_scale() | |
325 | { | |
326 | resolution_ = get_resolution(scale_index_); | |
834a4f1b | 327 | scale_ = div_height_ / resolution_; |
8a2fafcc JH |
328 | } |
329 | ||
4cffac16 SA |
330 | void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form) |
331 | { | |
332 | // Add the standard options | |
333 | Signal::populate_popup_form(parent, form); | |
334 | ||
368a37c2 SA |
335 | QFormLayout *const layout = new QFormLayout; |
336 | ||
337 | // Add the number of vdivs | |
4cffac16 SA |
338 | QSpinBox *vdiv_sb = new QSpinBox(parent); |
339 | vdiv_sb->setRange(1, MaximumVDivs); | |
340 | vdiv_sb->setValue(vdivs_); | |
341 | connect(vdiv_sb, SIGNAL(valueChanged(int)), | |
342 | this, SLOT(on_vdivs_changed(int))); | |
368a37c2 SA |
343 | layout->addRow(tr("Number of vertical divs"), vdiv_sb); |
344 | ||
345 | // Add the vertical resolution | |
346 | resolution_cb_ = new QComboBox(parent); | |
347 | ||
348 | for (int i = MinScaleIndex; i < MaxScaleIndex; i++) { | |
349 | const QString label = QString("%1").arg(get_resolution(i)); | |
350 | resolution_cb_->insertItem(0, label, QVariant(i)); | |
351 | } | |
352 | ||
353 | const int cur_idx = resolution_cb_->findData(QVariant(scale_index_)); | |
354 | resolution_cb_->setCurrentIndex(cur_idx); | |
355 | ||
356 | connect(resolution_cb_, SIGNAL(currentIndexChanged(int)), | |
357 | this, SLOT(on_resolution_changed(int))); | |
358 | ||
359 | QGridLayout *const vdiv_layout = new QGridLayout; | |
360 | QLabel *const vdiv_unit = new QLabel(tr("V/div")); | |
361 | vdiv_layout->addWidget(resolution_cb_, 0, 0); | |
362 | vdiv_layout->addWidget(vdiv_unit, 0, 1); | |
363 | ||
364 | layout->addRow(tr("Vertical resolution"), vdiv_layout); | |
365 | ||
366 | form->addRow(layout); | |
4cffac16 SA |
367 | } |
368 | ||
369 | void AnalogSignal::on_vdivs_changed(int vdivs) | |
370 | { | |
371 | vdivs_ = vdivs; | |
372 | ||
75d0779e SA |
373 | if (owner_) { |
374 | // Call order is important, otherwise the lazy event handler won't work | |
4cffac16 | 375 | owner_->extents_changed(false, true); |
75d0779e SA |
376 | owner_->row_item_appearance_changed(false, true); |
377 | } | |
4cffac16 SA |
378 | } |
379 | ||
368a37c2 SA |
380 | void AnalogSignal::on_resolution_changed(int index) |
381 | { | |
382 | scale_index_ = resolution_cb_->itemData(index).toInt(); | |
383 | update_scale(); | |
384 | ||
385 | if (owner_) | |
386 | owner_->row_item_appearance_changed(false, true); | |
387 | } | |
4cffac16 | 388 | |
f4e57597 SA |
389 | } // namespace TraceView |
390 | } // namespace views | |
aba1dd16 | 391 | } // namespace pv |