pv/view/decodetrace.cpp

   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 extern "C" {
  22 #include <libsigrokdecode/libsigrokdecode.h>
  23 }
  24
  25 #include <extdef.h>
  26
  27 #include <boost/foreach.hpp>
  28
  29 #include <QAction>
  30 #include <QApplication>
  31 #include <QComboBox>
  32 #include <QFormLayout>
  33 #include <QLabel>
  34 #include <QMenu>
  35 #include <QPushButton>
  36
  37 #include "decodetrace.h"
  38
  39 #include <pv/sigsession.h>
  40 #include <pv/data/decoderstack.h>
  41 #include <pv/data/decode/decoder.h>
  42 #include <pv/data/logic.h>
  43 #include <pv/data/logicsnapshot.h>
  44 #include <pv/data/decode/annotation.h>
  45 #include <pv/view/logicsignal.h>
  46 #include <pv/view/view.h>
  47 #include <pv/widgets/decodergroupbox.h>
  48 #include <pv/widgets/decodermenu.h>
  49
  50 using boost::dynamic_pointer_cast;
  51 using boost::shared_ptr;
  52 using std::list;
  53 using std::max;
  54 using std::map;
  55 using std::min;
  56 using std::vector;
  57
  58 namespace pv {
  59 namespace view {
  60
  61 const QColor DecodeTrace::DecodeColours[4] = {
  62         QColor(0xEF, 0x29, 0x29),       // Red
  63         QColor(0xFC, 0xE9, 0x4F),       // Yellow
  64         QColor(0x8A, 0xE2, 0x34),       // Green
  65         QColor(0x72, 0x9F, 0xCF)        // Blue
  66 };
  67
  68 const QColor DecodeTrace::ErrorBgColour = QColor(0xEF, 0x29, 0x29);
  69 const QColor DecodeTrace::NoDecodeColour = QColor(0x88, 0x8A, 0x85);
  70
  71 const double DecodeTrace::EndCapWidth = 5;
  72 const int DecodeTrace::DrawPadding = 100;
  73
  74 const QColor DecodeTrace::Colours[7] = {
  75         QColor(0xFC, 0xE9, 0x4F),       // Light Butter
  76         QColor(0xFC, 0xAF, 0x3E),       // Light Orange
  77         QColor(0xE9, 0xB9, 0x6E),       // Light Chocolate
  78         QColor(0x8A, 0xE2, 0x34),       // Light Green
  79         QColor(0x72, 0x9F, 0xCF),       // Light Blue
  80         QColor(0xAD, 0x7F, 0xA8),       // Light Plum
  81         QColor(0xEF, 0x29, 0x29)        // Light Red
  82 };
  83
  84 DecodeTrace::DecodeTrace(pv::SigSession &session,
  85         boost::shared_ptr<pv::data::DecoderStack> decoder_stack, int index) :
  86         Trace(session, QString::fromUtf8(
  87                 decoder_stack->stack().front()->decoder()->name)),
  88         _decoder_stack(decoder_stack),
  89         _delete_mapper(this)
  90 {
  91         assert(_decoder_stack);
  92
  93         _colour = DecodeColours[index % countof(DecodeColours)];
  94
  95         connect(_decoder_stack.get(), SIGNAL(new_decode_data()),
  96                 this, SLOT(on_new_decode_data()));
  97         connect(&_delete_mapper, SIGNAL(mapped(int)),
  98                 this, SLOT(on_delete_decoder(int)));
  99 }
 100
 101 bool DecodeTrace::enabled() const
 102 {
 103         return true;
 104 }
 105
 106 const boost::shared_ptr<pv::data::DecoderStack>& DecodeTrace::decoder() const
 107 {
 108         return _decoder_stack;
 109 }
 110
 111 void DecodeTrace::set_view(pv::view::View *view)
 112 {
 113         assert(view);
 114         Trace::set_view(view);
 115 }
 116
 117 void DecodeTrace::paint_back(QPainter &p, int left, int right)
 118 {
 119         Trace::paint_back(p, left, right);
 120         paint_axis(p, get_y(), left, right);
 121 }
 122
 123 void DecodeTrace::paint_mid(QPainter &p, int left, int right)
 124 {
 125         using pv::data::decode::Annotation;
 126
 127         const double scale = _view->scale();
 128         assert(scale > 0);
 129
 130         double samplerate = _decoder_stack->samplerate();
 131
 132         // Show sample rate as 1Hz when it is unknown
 133         if (samplerate == 0.0)
 134                 samplerate = 1.0;
 135
 136         const double pixels_offset = (_view->offset() -
 137                 _decoder_stack->get_start_time()) / scale;
 138         const double samples_per_pixel = samplerate * scale;
 139
 140         QFontMetrics m(QApplication::font());
 141         const int h = (m.boundingRect(QRect(), 0, "Tg").height() * 5) / 4;
 142
 143         assert(_decoder_stack);
 144         const QString err = _decoder_stack->error_message();
 145         if (!err.isEmpty())
 146         {
 147                 draw_error(p, err, left, right);
 148                 draw_unresolved_period(p, h, left, right, samples_per_pixel,
 149                         pixels_offset);
 150                 return;
 151         }
 152
 153         assert(_view);
 154         const int y = get_y();
 155
 156         assert(_decoder_stack);
 157         vector<Annotation> annotations(_decoder_stack->annotations());
 158         BOOST_FOREACH(const Annotation &a, annotations)
 159                 draw_annotation(a, p, get_text_colour(), h, left, right,
 160                         samples_per_pixel, pixels_offset, y);
 161
 162         draw_unresolved_period(p, h, left, right,
 163                 samples_per_pixel, pixels_offset);
 164 }
 165
 166 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 167 {
 168         using pv::data::decode::Decoder;
 169
 170         assert(form);
 171         assert(parent);
 172         assert(_decoder_stack);
 173
 174         // Add the standard options
 175         Trace::populate_popup_form(parent, form);
 176
 177         // Add the decoder options
 178         _bindings.clear();
 179         _probe_selectors.clear();
 180
 181         const list< shared_ptr<Decoder> >& stack = _decoder_stack->stack();
 182
 183         if (stack.empty())
 184         {
 185                 QLabel *const l = new QLabel(
 186                         tr("<p><i>No decoders in the stack</i></p>"));
 187                 l->setAlignment(Qt::AlignCenter);
 188                 form->addRow(l);
 189         }
 190         else
 191         {
 192                 list< shared_ptr<Decoder> >::const_iterator iter =
 193                         stack.begin();
 194                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 195                         shared_ptr<Decoder> dec(*iter);
 196                         create_decoder_form(i, dec, parent, form);
 197                 }
 198
 199                 form->addRow(new QLabel(
 200                         tr("<i>* Required Probes</i>"), parent));
 201         }
 202
 203         // Add stacking button
 204         pv::widgets::DecoderMenu *const decoder_menu =
 205                 new pv::widgets::DecoderMenu(parent);
 206         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 207                 this, SLOT(on_stack_decoder(srd_decoder*)));
 208
 209         QPushButton *const stack_button =
 210                 new QPushButton(tr("Stack Decoder"), parent);
 211         stack_button->setMenu(decoder_menu);
 212
 213         QHBoxLayout *stack_button_box = new QHBoxLayout;
 214         stack_button_box->addWidget(stack_button, 0, Qt::AlignRight);
 215         form->addRow(stack_button_box);
 216 }
 217
 218 QMenu* DecodeTrace::create_context_menu(QWidget *parent)
 219 {
 220         QMenu *const menu = Trace::create_context_menu(parent);
 221
 222         menu->addSeparator();
 223
 224         QAction *const del = new QAction(tr("Delete"), this);
 225         del->setShortcuts(QKeySequence::Delete);
 226         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 227         menu->addAction(del);
 228
 229         return menu;
 230 }
 231
 232 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a, QPainter &p,
 233         QColor text_color, int h, int left, int right, double samples_per_pixel,
 234         double pixels_offset, int y) const
 235 {
 236         const double start = a.start_sample() / samples_per_pixel -
 237                 pixels_offset;
 238         const double end = a.end_sample() / samples_per_pixel -
 239                 pixels_offset;
 240         const QColor fill = Colours[(a.format() * (countof(Colours) / 2 + 1)) %
 241                 countof(Colours)];
 242         const QColor outline(fill.darker());
 243
 244         if (start > right + DrawPadding || end < left - DrawPadding)
 245                 return;
 246
 247         if (a.start_sample() == a.end_sample())
 248                 draw_instant(a, p, fill, outline, text_color, h,
 249                         start, y);
 250         else
 251                 draw_range(a, p, fill, outline, text_color, h,
 252                         start, end, y);
 253 }
 254
 255 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
 256         QColor fill, QColor outline, QColor text_color, int h, double x, int y) const
 257 {
 258         const QString text = a.annotations().empty() ?
 259                 QString() : a.annotations().back();
 260         const double w = min(p.boundingRect(QRectF(), 0, text).width(),
 261                 0.0) + h;
 262         const QRectF rect(x - w / 2, y - h / 2, w, h);
 263
 264         p.setPen(outline);
 265         p.setBrush(fill);
 266         p.drawRoundedRect(rect, h / 2, h / 2);
 267
 268         p.setPen(text_color);
 269         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 270 }
 271
 272 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
 273         QColor fill, QColor outline, QColor text_color, int h, double start,
 274         double end, int y) const
 275 {
 276         const double top = y + .5 - h / 2;
 277         const double bottom = y + .5 + h / 2;
 278         const vector<QString> annotations = a.annotations();
 279
 280         p.setPen(outline);
 281         p.setBrush(fill);
 282
 283         // If the two ends are within 1 pixel, draw a vertical line
 284         if (start + 1.0 > end)
 285         {
 286                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 287                 return;
 288         }
 289
 290         const double cap_width = min((end - start) / 4, EndCapWidth);
 291
 292         QPointF pts[] = {
 293                 QPointF(start, y + .5f),
 294                 QPointF(start + cap_width, top),
 295                 QPointF(end - cap_width, top),
 296                 QPointF(end, y + .5f),
 297                 QPointF(end - cap_width, bottom),
 298                 QPointF(start + cap_width, bottom)
 299         };
 300
 301         p.drawConvexPolygon(pts, countof(pts));
 302
 303         if (annotations.empty())
 304                 return;
 305
 306         QRectF rect(start + cap_width, y - h / 2,
 307                 end - start - cap_width * 2, h);
 308         p.setPen(text_color);
 309
 310         // Try to find an annotation that will fit
 311         QString best_annotation;
 312         int best_width = 0;
 313
 314         BOOST_FOREACH(const QString &a, annotations) {
 315                 const int w = p.boundingRect(QRectF(), 0, a).width();
 316                 if (w <= rect.width() && w > best_width)
 317                         best_annotation = a, best_width = w;
 318         }
 319
 320         if (best_annotation.isEmpty())
 321                 best_annotation = annotations.back();
 322
 323         // If not ellide the last in the list
 324         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 325                 best_annotation, Qt::ElideRight, rect.width()));
 326 }
 327
 328 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 329         int left, int right)
 330 {
 331         const int y = get_y();
 332
 333         p.setPen(ErrorBgColour.darker());
 334         p.setBrush(ErrorBgColour);
 335
 336         const QRectF bounding_rect =
 337                 QRectF(left, INT_MIN / 2 + y, right - left, INT_MAX);
 338         const QRectF text_rect = p.boundingRect(bounding_rect,
 339                 Qt::AlignCenter, message);
 340         const float r = text_rect.height() / 4;
 341
 342         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r,
 343                 Qt::AbsoluteSize);
 344
 345         p.setPen(get_text_colour());
 346         p.drawText(text_rect, message);
 347 }
 348
 349 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left,
 350         int right, double samples_per_pixel, double pixels_offset)
 351 {
 352         using namespace pv::data;
 353         using pv::data::decode::Decoder;
 354
 355         assert(_decoder_stack);
 356
 357         shared_ptr<Logic> data;
 358         shared_ptr<LogicSignal> logic_signal;
 359
 360         const list< shared_ptr<Decoder> > &stack = _decoder_stack->stack();
 361
 362         // We get the logic data of the first probe in the list.
 363         // This works because we are currently assuming all
 364         // LogicSignals have the same data/snapshot
 365         BOOST_FOREACH (const shared_ptr<Decoder> &dec, stack)
 366                 if (dec && !dec->probes().empty() &&
 367                         ((logic_signal = (*dec->probes().begin()).second)) &&
 368                         ((data = logic_signal->logic_data())))
 369                         break;
 370
 371         if (!data || data->get_snapshots().empty())
 372                 return;
 373
 374         const shared_ptr<LogicSnapshot> snapshot =
 375                 data->get_snapshots().front();
 376         assert(snapshot);
 377         const int64_t sample_count = (int64_t)snapshot->get_sample_count();
 378         if (sample_count == 0)
 379                 return;
 380
 381         const int64_t samples_decoded = _decoder_stack->samples_decoded();
 382         if (sample_count == samples_decoded)
 383                 return;
 384
 385         const int y = get_y();
 386         const double start = max(samples_decoded /
 387                 samples_per_pixel - pixels_offset, left - 1.0);
 388         const double end = min(sample_count / samples_per_pixel -
 389                 pixels_offset, right + 1.0);
 390         const QRectF no_decode_rect(start, y - h/2 + 0.5, end - start, h);
 391
 392         p.setPen(QPen(Qt::NoPen));
 393         p.setBrush(Qt::white);
 394         p.drawRect(no_decode_rect);
 395
 396         p.setPen(NoDecodeColour);
 397         p.setBrush(QBrush(NoDecodeColour, Qt::Dense6Pattern));
 398         p.drawRect(no_decode_rect);
 399 }
 400
 401 void DecodeTrace::create_decoder_form(int index,
 402         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
 403         QFormLayout *form)
 404 {
 405         const GSList *probe;
 406
 407         assert(dec);
 408         const srd_decoder *const decoder = dec->decoder();
 409         assert(decoder);
 410
 411         pv::widgets::DecoderGroupBox *const group =
 412                 new pv::widgets::DecoderGroupBox(
 413                         QString::fromUtf8(decoder->name));
 414
 415         _delete_mapper.setMapping(group, index);
 416         connect(group, SIGNAL(delete_decoder()), &_delete_mapper, SLOT(map()));
 417
 418         QFormLayout *const decoder_form = new QFormLayout;
 419         group->add_layout(decoder_form);
 420
 421         // Add the mandatory probes
 422         for(probe = decoder->probes; probe; probe = probe->next) {
 423                 const struct srd_probe *const p =
 424                         (struct srd_probe *)probe->data;
 425                 QComboBox *const combo = create_probe_selector(parent, dec, p);
 426                 connect(combo, SIGNAL(currentIndexChanged(int)),
 427                         this, SLOT(on_probe_selected(int)));
 428                 decoder_form->addRow(tr("<b>%1</b> (%2) *")
 429                         .arg(p->name).arg(p->desc), combo);
 430
 431                 const ProbeSelector s = {combo, dec, p};
 432                 _probe_selectors.push_back(s);
 433         }
 434
 435         // Add the optional probes
 436         for(probe = decoder->opt_probes; probe; probe = probe->next) {
 437                 const struct srd_probe *const p =
 438                         (struct srd_probe *)probe->data;
 439                 QComboBox *const combo = create_probe_selector(parent, dec, p);
 440                 connect(combo, SIGNAL(currentIndexChanged(int)),
 441                         this, SLOT(on_probe_selected(int)));
 442                 decoder_form->addRow(tr("<b>%1</b> (%2)")
 443                         .arg(p->name).arg(p->desc), combo);
 444
 445                 const ProbeSelector s = {combo, dec, p};
 446                 _probe_selectors.push_back(s);
 447         }
 448
 449         // Add the options
 450         shared_ptr<prop::binding::DecoderOptions> binding(
 451                 new prop::binding::DecoderOptions(_decoder_stack, dec));
 452         binding->add_properties_to_form(decoder_form, true);
 453
 454         _bindings.push_back(binding);
 455
 456         form->addRow(group);
 457 }
 458
 459 QComboBox* DecodeTrace::create_probe_selector(
 460         QWidget *parent, const shared_ptr<data::decode::Decoder> &dec,
 461         const srd_probe *const probe)
 462 {
 463         assert(dec);
 464
 465         const vector< shared_ptr<Signal> > sigs = _session.get_signals();
 466
 467         assert(_decoder_stack);
 468         const map<const srd_probe*,
 469                 shared_ptr<LogicSignal> >::const_iterator probe_iter =
 470                 dec->probes().find(probe);
 471
 472         QComboBox *selector = new QComboBox(parent);
 473
 474         selector->addItem("-", qVariantFromValue((void*)NULL));
 475
 476         if (probe_iter == dec->probes().end())
 477                 selector->setCurrentIndex(0);
 478
 479         for(size_t i = 0; i < sigs.size(); i++) {
 480                 const shared_ptr<view::Signal> s(sigs[i]);
 481                 assert(s);
 482
 483                 if (dynamic_pointer_cast<LogicSignal>(s) && s->enabled())
 484                 {
 485                         selector->addItem(s->get_name(),
 486                                 qVariantFromValue((void*)s.get()));
 487                         if ((*probe_iter).second == s)
 488                                 selector->setCurrentIndex(i + 1);
 489                 }
 490         }
 491
 492         return selector;
 493 }
 494
 495 void DecodeTrace::commit_decoder_probes(shared_ptr<data::decode::Decoder> &dec)
 496 {
 497         assert(dec);
 498
 499         map<const srd_probe*, shared_ptr<LogicSignal> > probe_map;
 500         const vector< shared_ptr<Signal> > sigs = _session.get_signals();
 501
 502         BOOST_FOREACH(const ProbeSelector &s, _probe_selectors)
 503         {
 504                 if(s._decoder != dec)
 505                         break;
 506
 507                 const LogicSignal *const selection =
 508                         (LogicSignal*)s._combo->itemData(
 509                                 s._combo->currentIndex()).value<void*>();
 510
 511                 BOOST_FOREACH(shared_ptr<Signal> sig, sigs)
 512                         if(sig.get() == selection) {
 513                                 probe_map[s._probe] =
 514                                         dynamic_pointer_cast<LogicSignal>(sig);
 515                                 break;
 516                         }
 517         }
 518
 519         dec->set_probes(probe_map);
 520 }
 521
 522 void DecodeTrace::commit_probes()
 523 {
 524         assert(_decoder_stack);
 525         BOOST_FOREACH(shared_ptr<data::decode::Decoder> dec,
 526                 _decoder_stack->stack())
 527                 commit_decoder_probes(dec);
 528
 529         _decoder_stack->begin_decode();
 530 }
 531
 532 void DecodeTrace::on_new_decode_data()
 533 {
 534         if (_view)
 535                 _view->update_viewport();
 536 }
 537
 538 void DecodeTrace::delete_pressed()
 539 {
 540         on_delete();
 541 }
 542
 543 void DecodeTrace::on_delete()
 544 {
 545         _session.remove_decode_signal(this);
 546 }
 547
 548 void DecodeTrace::on_probe_selected(int)
 549 {
 550         commit_probes();
 551 }
 552
 553 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
 554 {
 555         assert(decoder);
 556         assert(_decoder_stack);
 557         _decoder_stack->push(shared_ptr<data::decode::Decoder>(
 558                 new data::decode::Decoder(decoder)));
 559         _decoder_stack->begin_decode();
 560
 561         create_popup_form();
 562 }
 563
 564 void DecodeTrace::on_delete_decoder(int index)
 565 {
 566         _decoder_stack->remove(index);
 567
 568         // Update the popup
 569         create_popup_form();
 570
 571         _decoder_stack->begin_decode();
 572 }
 573
 574 } // namespace view
 575 } // namespace pv