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