pv/views/trace/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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 extern "C" {
  21 #include <libsigrokdecode/libsigrokdecode.h>
  22 }
  23
  24 #include <limits>
  25 #include <mutex>
  26 #include <tuple>
  27
  28 #include <extdef.h>
  29
  30 #include <boost/functional/hash.hpp>
  31
  32 #include <QAction>
  33 #include <QApplication>
  34 #include <QClipboard>
  35 #include <QCheckBox>
  36 #include <QComboBox>
  37 #include <QDebug>
  38 #include <QFileDialog>
  39 #include <QFormLayout>
  40 #include <QLabel>
  41 #include <QMenu>
  42 #include <QMessageBox>
  43 #include <QPushButton>
  44 #include <QTextStream>
  45 #include <QToolTip>
  46
  47 #include "decodetrace.hpp"
  48 #include "view.hpp"
  49 #include "viewport.hpp"
  50
  51 #include <pv/globalsettings.hpp>
  52 #include <pv/session.hpp>
  53 #include <pv/strnatcmp.hpp>
  54 #include <pv/data/decodesignal.hpp>
  55 #include <pv/data/decode/annotation.hpp>
  56 #include <pv/data/decode/decoder.hpp>
  57 #include <pv/data/logic.hpp>
  58 #include <pv/data/logicsegment.hpp>
  59 #include <pv/widgets/decodergroupbox.hpp>
  60 #include <pv/widgets/decodermenu.hpp>
  61 #include <pv/widgets/flowlayout.hpp>
  62
  63 using std::abs;
  64 using std::find_if;
  65 using std::lock_guard;
  66 using std::make_pair;
  67 using std::max;
  68 using std::min;
  69 using std::numeric_limits;
  70 using std::pair;
  71 using std::shared_ptr;
  72 using std::tie;
  73 using std::vector;
  74
  75 using pv::data::decode::Annotation;
  76 using pv::data::decode::AnnotationClass;
  77 using pv::data::decode::Row;
  78 using pv::data::decode::DecodeChannel;
  79 using pv::data::DecodeSignal;
  80
  81 namespace pv {
  82 namespace views {
  83 namespace trace {
  84
  85 #define DECODETRACE_COLOR_SATURATION (180) /* 0-255 */
  86 #define DECODETRACE_COLOR_VALUE (170) /* 0-255 */
  87
  88 const QColor DecodeTrace::ErrorBgColor = QColor(0xEF, 0x29, 0x29);
  89 const QColor DecodeTrace::NoDecodeColor = QColor(0x88, 0x8A, 0x85);
  90 const QColor DecodeTrace::ExpandMarkerWarnColor = QColor(0xFF, 0xA5, 0x00); // QColorConstants::Svg::orange
  91 const QColor DecodeTrace::ExpandMarkerHiddenColor = QColor(0x69, 0x69, 0x69); // QColorConstants::Svg::dimgray
  92 const uint8_t DecodeTrace::ExpansionAreaHeaderAlpha = 10 * 255 / 100;
  93 const uint8_t DecodeTrace::ExpansionAreaAlpha = 5 * 255 / 100;
  94
  95 const int DecodeTrace::ArrowSize = 6;
  96 const double DecodeTrace::EndCapWidth = 5;
  97 const int DecodeTrace::RowTitleMargin = 7;
  98 const int DecodeTrace::DrawPadding = 100;
  99
 100 const int DecodeTrace::MaxTraceUpdateRate = 1; // No more than 1 Hz
 101 const int DecodeTrace::AnimationDurationInTicks = 7;
 102 const int DecodeTrace::HiddenRowHideDelay = 1000; // 1 second
 103
 104 /**
 105  * Helper function for forceUpdate()
 106  */
 107 void invalidateLayout(QLayout* layout)
 108 {
 109         // Recompute the given layout and all its child layouts recursively
 110         for (int i = 0; i < layout->count(); i++) {
 111                 QLayoutItem *item = layout->itemAt(i);
 112
 113                 if (item->layout())
 114                         invalidateLayout(item->layout());
 115                 else
 116                         item->invalidate();
 117         }
 118
 119         layout->invalidate();
 120         layout->activate();
 121 }
 122
 123 void forceUpdate(QWidget* widget)
 124 {
 125         // Update all child widgets recursively
 126         for (QObject* child : widget->children())
 127                 if (child->isWidgetType())
 128                         forceUpdate((QWidget*)child);
 129
 130         // Invalidate the layout of the widget itself
 131         if (widget->layout())
 132                 invalidateLayout(widget->layout());
 133 }
 134
 135
 136 ContainerWidget::ContainerWidget(QWidget *parent) :
 137         QWidget(parent)
 138 {
 139 }
 140
 141 void ContainerWidget::resizeEvent(QResizeEvent* event)
 142 {
 143         QWidget::resizeEvent(event);
 144
 145         widgetResized(this);
 146 }
 147
 148
 149 DecodeTrace::DecodeTrace(pv::Session &session,
 150         shared_ptr<data::SignalBase> signalbase, int index) :
 151         Trace(signalbase),
 152         session_(session),
 153         show_hidden_rows_(false),
 154         delete_mapper_(this),
 155         show_hide_mapper_(this),
 156         row_show_hide_mapper_(this)
 157 {
 158         decode_signal_ = dynamic_pointer_cast<data::DecodeSignal>(base_);
 159
 160         GlobalSettings settings;
 161         always_show_all_rows_ = settings.value(GlobalSettings::Key_Dec_AlwaysShowAllRows).toBool();
 162
 163         GlobalSettings::add_change_handler(this);
 164
 165         // Determine shortest string we want to see displayed in full
 166         QFontMetrics m(QApplication::font());
 167         min_useful_label_width_ = m.width("XX"); // e.g. two hex characters
 168
 169         default_row_height_ = (ViewItemPaintParams::text_height() * 6) / 4;
 170         annotation_height_ = (ViewItemPaintParams::text_height() * 5) / 4;
 171
 172         // For the base color, we want to start at a very different color for
 173         // every decoder stack, so multiply the index with a number that is
 174         // rather close to 180 degrees of the color circle but not a dividend of 360
 175         // Note: The offset equals the color of the first annotation
 176         QColor color;
 177         const int h = (120 + 160 * index) % 360;
 178         const int s = DECODETRACE_COLOR_SATURATION;
 179         const int v = DECODETRACE_COLOR_VALUE;
 180         color.setHsv(h, s, v);
 181         base_->set_color(color);
 182
 183         connect(decode_signal_.get(), SIGNAL(new_annotations()),
 184                 this, SLOT(on_new_annotations()));
 185         connect(decode_signal_.get(), SIGNAL(decode_reset()),
 186                 this, SLOT(on_decode_reset()));
 187         connect(decode_signal_.get(), SIGNAL(decode_finished()),
 188                 this, SLOT(on_decode_finished()));
 189         connect(decode_signal_.get(), SIGNAL(channels_updated()),
 190                 this, SLOT(on_channels_updated()));
 191
 192         connect(&delete_mapper_, SIGNAL(mapped(int)),
 193                 this, SLOT(on_delete_decoder(int)));
 194         connect(&show_hide_mapper_, SIGNAL(mapped(int)),
 195                 this, SLOT(on_show_hide_decoder(int)));
 196         connect(&row_show_hide_mapper_, SIGNAL(mapped(int)),
 197                 this, SLOT(on_show_hide_row(int)));
 198         connect(&class_show_hide_mapper_, SIGNAL(mapped(QWidget*)),
 199                 this, SLOT(on_show_hide_class(QWidget*)));
 200
 201         connect(&delayed_trace_updater_, SIGNAL(timeout()),
 202                 this, SLOT(on_delayed_trace_update()));
 203         delayed_trace_updater_.setSingleShot(true);
 204         delayed_trace_updater_.setInterval(1000 / MaxTraceUpdateRate);
 205
 206         connect(&animation_timer_, SIGNAL(timeout()),
 207                 this, SLOT(on_animation_timer()));
 208         animation_timer_.setInterval(1000 / 50);
 209
 210         connect(&delayed_hidden_row_hider_, SIGNAL(timeout()),
 211                 this, SLOT(on_hide_hidden_rows()));
 212         delayed_hidden_row_hider_.setSingleShot(true);
 213         delayed_hidden_row_hider_.setInterval(HiddenRowHideDelay);
 214
 215         default_marker_shape_ << QPoint(0,         -ArrowSize);
 216         default_marker_shape_ << QPoint(ArrowSize,  0);
 217         default_marker_shape_ << QPoint(0,          ArrowSize);
 218 }
 219
 220 DecodeTrace::~DecodeTrace()
 221 {
 222         GlobalSettings::remove_change_handler(this);
 223
 224         for (DecodeTraceRow& r : rows_) {
 225                 for (QCheckBox* cb : r.selectors)
 226                         delete cb;
 227
 228                 delete r.selector_container;
 229                 delete r.header_container;
 230                 delete r.container;
 231         }
 232 }
 233
 234 bool DecodeTrace::enabled() const
 235 {
 236         return true;
 237 }
 238
 239 shared_ptr<data::SignalBase> DecodeTrace::base() const
 240 {
 241         return base_;
 242 }
 243
 244 void DecodeTrace::set_owner(TraceTreeItemOwner *owner)
 245 {
 246         Trace::set_owner(owner);
 247
 248         // The owner is set in trace::View::signals_changed(), which is a slot.
 249         // So after this trace was added to the view, we won't have an owner
 250         // that we need to initialize in update_rows(). Once we do, we call it
 251         // from on_decode_reset().
 252         on_decode_reset();
 253 }
 254
 255 pair<int, int> DecodeTrace::v_extents() const
 256 {
 257         // Make an empty decode trace appear symmetrical
 258         if (visible_rows_ == 0)
 259                 return make_pair(-default_row_height_, default_row_height_);
 260
 261         unsigned int height = 0;
 262         for (const DecodeTraceRow& r : rows_)
 263                 if (r.currently_visible)
 264                         height += r.height;
 265
 266         return make_pair(-default_row_height_, height);
 267 }
 268
 269 void DecodeTrace::paint_back(QPainter &p, ViewItemPaintParams &pp)
 270 {
 271         Trace::paint_back(p, pp);
 272         paint_axis(p, pp, get_visual_y());
 273 }
 274
 275 void DecodeTrace::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 276 {
 277         lock_guard<mutex> lock(row_modification_mutex_);
 278         unsigned int visible_rows;
 279
 280 #if DECODETRACE_SHOW_RENDER_TIME
 281         render_time_.restart();
 282 #endif
 283
 284         // Set default pen to allow for text width calculation
 285         p.setPen(Qt::black);
 286
 287         pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pp.left(), pp.right());
 288
 289         // Just because the view says we see a certain sample range it
 290         // doesn't mean we have this many decoded samples, too, so crop
 291         // the range to what has been decoded already
 292         sample_range.second = min((int64_t)sample_range.second,
 293                 decode_signal_->get_decoded_sample_count(current_segment_, false));
 294
 295         visible_rows = 0;
 296         int y = get_visual_y();
 297
 298         for (DecodeTraceRow& r : rows_) {
 299                 // If the row is hidden, we don't want to fetch annotations
 300                 assert(r.decode_row);
 301                 assert(r.decode_row->decoder());
 302                 if ((!r.decode_row->decoder()->visible()) ||
 303                         ((!r.decode_row->visible() && (!show_hidden_rows_) && (!r.expanding) && (!r.expanded) && (!r.collapsing)))) {
 304                         r.currently_visible = false;
 305                         continue;
 306                 }
 307
 308                 deque<const Annotation*> annotations;
 309                 decode_signal_->get_annotation_subset(annotations, r.decode_row,
 310                         current_segment_, sample_range.first, sample_range.second);
 311
 312                 // Show row if there are visible annotations, when user wants to see
 313                 // all rows that have annotations somewhere and this one is one of them
 314                 // or when the row has at least one hidden annotation class
 315                 r.currently_visible = !annotations.empty();
 316                 if (!r.currently_visible) {
 317                         size_t ann_count = decode_signal_->get_annotation_count(r.decode_row, current_segment_);
 318                         r.currently_visible = ((always_show_all_rows_ || r.has_hidden_classes) &&
 319                                 (ann_count > 0)) || r.expanded;
 320                 }
 321
 322                 if (r.currently_visible) {
 323                         draw_annotations(annotations, p, pp, y, r);
 324                         y += r.height;
 325                         visible_rows++;
 326                 }
 327         }
 328
 329         draw_unresolved_period(p, pp.left(), pp.right());
 330
 331         if (visible_rows != visible_rows_) {
 332                 visible_rows_ = visible_rows;
 333
 334                 // Call order is important, otherwise the lazy event handler won't work
 335                 owner_->extents_changed(false, true);
 336                 owner_->row_item_appearance_changed(false, true);
 337         }
 338
 339         const QString err = decode_signal_->error_message();
 340         if (!err.isEmpty())
 341                 draw_error(p, err, pp);
 342
 343 #if DECODETRACE_SHOW_RENDER_TIME
 344         qDebug() << "Rendering" << base_->name() << "took" << render_time_.elapsed() << "ms";
 345 #endif
 346 }
 347
 348 void DecodeTrace::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 349 {
 350         unsigned int y = get_visual_y();
 351
 352         update_expanded_rows();
 353
 354         for (const DecodeTraceRow& r : rows_) {
 355                 if (!r.currently_visible)
 356                         continue;
 357
 358                 p.setPen(QPen(Qt::NoPen));
 359
 360                 if (r.expand_marker_highlighted)
 361                         p.setBrush(QApplication::palette().brush(QPalette::Highlight));
 362                 else if (!r.decode_row->visible())
 363                         p.setBrush(ExpandMarkerHiddenColor);
 364                 else if (r.has_hidden_classes)
 365                         p.setBrush(ExpandMarkerWarnColor);
 366                 else
 367                         p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 368
 369                 // Draw expansion marker
 370                 QPolygon marker(r.expand_marker_shape);
 371                 marker.translate(pp.left(), y);
 372                 p.drawPolygon(marker);
 373
 374                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 375
 376                 const QRect text_rect(pp.left() + ArrowSize * 2, y - r.height / 2,
 377                         pp.right() - pp.left(), r.height);
 378                 const QString h(r.decode_row->title());
 379                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
 380                         Qt::TextDontClip;
 381
 382                 // Draw the outline
 383                 p.setPen(QApplication::palette().color(QPalette::Base));
 384                 for (int dx = -1; dx <= 1; dx++)
 385                         for (int dy = -1; dy <= 1; dy++)
 386                                 if (dx != 0 && dy != 0)
 387                                         p.drawText(text_rect.translated(dx, dy), f, h);
 388
 389                 // Draw the text
 390                 if (!r.decode_row->visible())
 391                         p.setPen(ExpandMarkerHiddenColor);
 392                 else
 393                         p.setPen(QApplication::palette().color(QPalette::WindowText));
 394
 395                 p.drawText(text_rect, f, h);
 396
 397                 y += r.height;
 398         }
 399
 400         if (show_hover_marker_)
 401                 paint_hover_marker(p);
 402 }
 403
 404 void DecodeTrace::update_stack_button()
 405 {
 406         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
 407
 408         // Only show decoders in the menu that can be stacked onto the last one in the stack
 409         if (!stack.empty()) {
 410                 const srd_decoder* d = stack.back()->get_srd_decoder();
 411
 412                 if (d->outputs) {
 413                         pv::widgets::DecoderMenu *const decoder_menu =
 414                                 new pv::widgets::DecoderMenu(stack_button_, (const char*)(d->outputs->data));
 415                         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 416                                 this, SLOT(on_stack_decoder(srd_decoder*)));
 417
 418                         decoder_menu->setStyleSheet("QMenu { menu-scrollable: 1; }");
 419
 420                         stack_button_->setMenu(decoder_menu);
 421                         stack_button_->show();
 422                         return;
 423                 }
 424         }
 425
 426         // No decoders available for stacking
 427         stack_button_->setMenu(nullptr);
 428         stack_button_->hide();
 429 }
 430
 431 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 432 {
 433         assert(form);
 434
 435         // Add the standard options
 436         Trace::populate_popup_form(parent, form);
 437
 438         // Add the decoder options
 439         bindings_.clear();
 440         channel_id_map_.clear();
 441         init_state_map_.clear();
 442         decoder_forms_.clear();
 443
 444         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
 445
 446         if (stack.empty()) {
 447                 QLabel *const l = new QLabel(
 448                         tr("<p><i>No decoders in the stack</i></p>"));
 449                 l->setAlignment(Qt::AlignCenter);
 450                 form->addRow(l);
 451         } else {
 452                 auto iter = stack.cbegin();
 453                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 454                         shared_ptr<Decoder> dec(*iter);
 455                         create_decoder_form(i, dec, parent, form);
 456                 }
 457
 458                 form->addRow(new QLabel(
 459                         tr("<i>* Required channels</i>"), parent));
 460         }
 461
 462         // Add stacking button
 463         stack_button_ = new QPushButton(tr("Stack Decoder"), parent);
 464         stack_button_->setToolTip(tr("Stack a higher-level decoder on top of this one"));
 465         update_stack_button();
 466
 467         QHBoxLayout *stack_button_box = new QHBoxLayout;
 468         stack_button_box->addWidget(stack_button_, 0, Qt::AlignRight);
 469         form->addRow(stack_button_box);
 470 }
 471
 472 QMenu* DecodeTrace::create_header_context_menu(QWidget *parent)
 473 {
 474         QMenu *const menu = Trace::create_header_context_menu(parent);
 475
 476         menu->addSeparator();
 477
 478         QAction *const del = new QAction(tr("Delete"), this);
 479         del->setShortcuts(QKeySequence::Delete);
 480         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 481         menu->addAction(del);
 482
 483         return menu;
 484 }
 485
 486 QMenu* DecodeTrace::create_view_context_menu(QWidget *parent, QPoint &click_pos)
 487 {
 488         // Get entries from default menu before adding our own
 489         QMenu *const menu = new QMenu(parent);
 490
 491         QMenu* default_menu = Trace::create_view_context_menu(parent, click_pos);
 492         if (default_menu) {
 493                 for (QAction *action : default_menu->actions()) {  // clazy:exclude=range-loop
 494                         menu->addAction(action);
 495                         if (action->parent() == default_menu)
 496                                 action->setParent(menu);
 497                 }
 498                 delete default_menu;
 499
 500                 // Add separator if needed
 501                 if (menu->actions().length() > 0)
 502                         menu->addSeparator();
 503         }
 504
 505         selected_row_ = nullptr;
 506         const DecodeTraceRow* r = get_row_at_point(click_pos);
 507         if (r)
 508                 selected_row_ = r->decode_row;
 509
 510         const View *const view = owner_->view();
 511         assert(view);
 512         QPoint pos = view->viewport()->mapFrom(parent, click_pos);
 513
 514         // Default sample range is "from here"
 515         const pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pos.x(), pos.x() + 1);
 516         selected_sample_range_ = make_pair(sample_range.first, numeric_limits<uint64_t>::max());
 517
 518         if (decode_signal_->is_paused()) {
 519                 QAction *const resume =
 520                         new QAction(tr("Resume decoding"), this);
 521                 resume->setIcon(QIcon::fromTheme("media-playback-start",
 522                         QIcon(":/icons/media-playback-start.png")));
 523                 connect(resume, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 524                 menu->addAction(resume);
 525         } else {
 526                 QAction *const pause =
 527                         new QAction(tr("Pause decoding"), this);
 528                 pause->setIcon(QIcon::fromTheme("media-playback-pause",
 529                         QIcon(":/icons/media-playback-pause.png")));
 530                 connect(pause, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 531                 menu->addAction(pause);
 532         }
 533
 534         QAction *const copy_annotation_to_clipboard =
 535                 new QAction(tr("Copy annotation text to clipboard"), this);
 536         copy_annotation_to_clipboard->setIcon(QIcon::fromTheme("edit-paste",
 537                 QIcon(":/icons/edit-paste.svg")));
 538         connect(copy_annotation_to_clipboard, SIGNAL(triggered()), this, SLOT(on_copy_annotation_to_clipboard()));
 539         menu->addAction(copy_annotation_to_clipboard);
 540
 541         menu->addSeparator();
 542
 543         QAction *const export_all_rows =
 544                 new QAction(tr("Export all annotations"), this);
 545         export_all_rows->setIcon(QIcon::fromTheme("document-save-as",
 546                 QIcon(":/icons/document-save-as.png")));
 547         connect(export_all_rows, SIGNAL(triggered()), this, SLOT(on_export_all_rows()));
 548         menu->addAction(export_all_rows);
 549
 550         QAction *const export_row =
 551                 new QAction(tr("Export all annotations for this row"), this);
 552         export_row->setIcon(QIcon::fromTheme("document-save-as",
 553                 QIcon(":/icons/document-save-as.png")));
 554         connect(export_row, SIGNAL(triggered()), this, SLOT(on_export_row()));
 555         menu->addAction(export_row);
 556
 557         menu->addSeparator();
 558
 559         QAction *const export_all_rows_from_here =
 560                 new QAction(tr("Export all annotations, starting here"), this);
 561         export_all_rows_from_here->setIcon(QIcon::fromTheme("document-save-as",
 562                 QIcon(":/icons/document-save-as.png")));
 563         connect(export_all_rows_from_here, SIGNAL(triggered()), this, SLOT(on_export_all_rows_from_here()));
 564         menu->addAction(export_all_rows_from_here);
 565
 566         QAction *const export_row_from_here =
 567                 new QAction(tr("Export annotations for this row, starting here"), this);
 568         export_row_from_here->setIcon(QIcon::fromTheme("document-save-as",
 569                 QIcon(":/icons/document-save-as.png")));
 570         connect(export_row_from_here, SIGNAL(triggered()), this, SLOT(on_export_row_from_here()));
 571         menu->addAction(export_row_from_here);
 572
 573         menu->addSeparator();
 574
 575         QAction *const export_all_rows_with_cursor =
 576                 new QAction(tr("Export all annotations within cursor range"), this);
 577         export_all_rows_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 578                 QIcon(":/icons/document-save-as.png")));
 579         connect(export_all_rows_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_all_rows_with_cursor()));
 580         menu->addAction(export_all_rows_with_cursor);
 581
 582         QAction *const export_row_with_cursor =
 583                 new QAction(tr("Export annotations for this row within cursor range"), this);
 584         export_row_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 585                 QIcon(":/icons/document-save-as.png")));
 586         connect(export_row_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_row_with_cursor()));
 587         menu->addAction(export_row_with_cursor);
 588
 589         if (!view->cursors()->enabled()) {
 590                 export_all_rows_with_cursor->setEnabled(false);
 591                 export_row_with_cursor->setEnabled(false);
 592         }
 593
 594         return menu;
 595 }
 596
 597 void DecodeTrace::delete_pressed()
 598 {
 599         on_delete();
 600 }
 601
 602 void DecodeTrace::hover_point_changed(const QPoint &hp)
 603 {
 604         Trace::hover_point_changed(hp);
 605
 606         assert(owner_);
 607
 608         DecodeTraceRow* hover_row = get_row_at_point(hp);
 609
 610         // Row expansion marker handling
 611         for (DecodeTraceRow& r : rows_)
 612                 r.expand_marker_highlighted = false;
 613
 614         if (hover_row) {
 615                 int row_y = get_row_y(hover_row);
 616                 if ((hp.x() > 0) && (hp.x() < (int)(ArrowSize + 3 + hover_row->title_width)) &&
 617                         (hp.y() > (int)(row_y - ArrowSize)) && (hp.y() < (int)(row_y + ArrowSize))) {
 618
 619                         hover_row->expand_marker_highlighted = true;
 620                         show_hidden_rows_ = true;
 621                         delayed_hidden_row_hider_.start();
 622                 }
 623         }
 624
 625         // Tooltip handling
 626         if (hp.x() > 0) {
 627                 QString ann = get_annotation_at_point(hp);
 628
 629                 if (!ann.isEmpty()) {
 630                         QFontMetrics m(QToolTip::font());
 631                         const QRect text_size = m.boundingRect(QRect(), 0, ann);
 632
 633                         // This is OS-specific and unfortunately we can't query it, so
 634                         // use an approximation to at least try to minimize the error.
 635                         const int padding = default_row_height_ + 8;
 636
 637                         // Make sure the tool tip doesn't overlap with the mouse cursor.
 638                         // If it did, the tool tip would constantly hide and re-appear.
 639                         // We also push it up by one row so that it appears above the
 640                         // decode trace, not below.
 641                         QPoint p = hp;
 642                         p.setX(hp.x() - (text_size.width() / 2) - padding);
 643
 644                         p.setY(get_row_y(hover_row) - default_row_height_ -
 645                                 text_size.height() - padding);
 646
 647                         const View *const view = owner_->view();
 648                         assert(view);
 649                         QToolTip::showText(view->viewport()->mapToGlobal(p), ann);
 650
 651                 } else
 652                         QToolTip::hideText();
 653
 654         } else
 655                 QToolTip::hideText();
 656 }
 657
 658 void DecodeTrace::mouse_left_press_event(const QMouseEvent* event)
 659 {
 660         // Update container widths which depend on the scrollarea's current width
 661         update_expanded_rows();
 662
 663         // Handle row expansion marker
 664         for (DecodeTraceRow& r : rows_) {
 665                 if (!r.expand_marker_highlighted)
 666                         continue;
 667
 668                 unsigned int y = get_row_y(&r);
 669                 if ((event->x() > 0) && (event->x() <= (int)(ArrowSize + 3 + r.title_width)) &&
 670                         (event->y() > (int)(y - (default_row_height_ / 2))) &&
 671                         (event->y() <= (int)(y + (default_row_height_ / 2)))) {
 672
 673                         if (r.expanded) {
 674                                 r.collapsing = true;
 675                                 r.expanded = false;
 676                                 r.anim_shape = ArrowSize;
 677                         } else {
 678                                 r.expanding = true;
 679                                 r.anim_shape = 0;
 680
 681                                 // Force geometry update of the widget container to get
 682                                 // an up-to-date height (which also depends on the width)
 683                                 forceUpdate(r.container);
 684
 685                                 r.container->setVisible(true);
 686                                 r.expanded_height = 2 * default_row_height_ + r.container->sizeHint().height();
 687                         }
 688
 689                         r.animation_step = 0;
 690                         r.anim_height = r.height;
 691
 692                         animation_timer_.start();
 693                 }
 694         }
 695 }
 696
 697 void DecodeTrace::draw_annotations(deque<const Annotation*>& annotations,
 698                 QPainter &p, const ViewItemPaintParams &pp, int y, const DecodeTraceRow& row)
 699 {
 700         Annotation::Class block_class = 0;
 701         bool block_class_uniform = true;
 702         qreal block_start = 0;
 703         int block_ann_count = 0;
 704
 705         const Annotation* prev_ann;
 706         qreal prev_end = INT_MIN;
 707
 708         qreal a_end;
 709
 710         double samples_per_pixel, pixels_offset;
 711         tie(pixels_offset, samples_per_pixel) =
 712                 get_pixels_offset_samples_per_pixel();
 713
 714         // Gather all annotations that form a visual "block" and draw them as such
 715         for (const Annotation* a : annotations) {
 716
 717                 const qreal abs_a_start = a->start_sample() / samples_per_pixel;
 718                 const qreal abs_a_end   = a->end_sample() / samples_per_pixel;
 719
 720                 const qreal a_start = abs_a_start - pixels_offset;
 721                 a_end = abs_a_end - pixels_offset;
 722
 723                 const qreal a_width = a_end - a_start;
 724                 const qreal delta = a_end - prev_end;
 725
 726                 bool a_is_separate = false;
 727
 728                 // Annotation wider than the threshold for a useful label width?
 729                 if (a_width >= min_useful_label_width_) {
 730                         for (const QString &ann_text : *(a->annotations())) {
 731                                 const qreal w = p.boundingRect(QRectF(), 0, ann_text).width();
 732                                 // Annotation wide enough to fit a label? Don't put it in a block then
 733                                 if (w <= a_width) {
 734                                         a_is_separate = true;
 735                                         break;
 736                                 }
 737                         }
 738                 }
 739
 740                 // Were the previous and this annotation more than a pixel apart?
 741                 if ((abs(delta) > 1) || a_is_separate) {
 742                         // Block was broken, draw annotations that form the current block
 743                         if (block_ann_count == 1)
 744                                 draw_annotation(prev_ann, p, pp, y, row);
 745                         else if (block_ann_count > 0)
 746                                 draw_annotation_block(block_start, prev_end, block_class,
 747                                         block_class_uniform, p, y, row);
 748
 749                         block_ann_count = 0;
 750                 }
 751
 752                 if (a_is_separate) {
 753                         draw_annotation(a, p, pp, y, row);
 754                         // Next annotation must start a new block. delta will be > 1
 755                         // because we set prev_end to INT_MIN but that's okay since
 756                         // block_ann_count will be 0 and nothing will be drawn
 757                         prev_end = INT_MIN;
 758                         block_ann_count = 0;
 759                 } else {
 760                         prev_end = a_end;
 761                         prev_ann = a;
 762
 763                         if (block_ann_count == 0) {
 764                                 block_start = a_start;
 765                                 block_class = a->ann_class_id();
 766                                 block_class_uniform = true;
 767                         } else
 768                                 if (a->ann_class_id() != block_class)
 769                                         block_class_uniform = false;
 770
 771                         block_ann_count++;
 772                 }
 773         }
 774
 775         if (block_ann_count == 1)
 776                 draw_annotation(prev_ann, p, pp, y, row);
 777         else if (block_ann_count > 0)
 778                 draw_annotation_block(block_start, prev_end, block_class,
 779                         block_class_uniform, p, y, row);
 780 }
 781
 782 void DecodeTrace::draw_annotation(const Annotation* a, QPainter &p,
 783         const ViewItemPaintParams &pp, int y, const DecodeTraceRow& row) const
 784 {
 785         double samples_per_pixel, pixels_offset;
 786         tie(pixels_offset, samples_per_pixel) =
 787                 get_pixels_offset_samples_per_pixel();
 788
 789         const double start = a->start_sample() / samples_per_pixel - pixels_offset;
 790         const double end = a->end_sample() / samples_per_pixel - pixels_offset;
 791
 792         p.setPen(row.ann_class_dark_color.at(a->ann_class_id()));
 793         p.setBrush(row.ann_class_color.at(a->ann_class_id()));
 794
 795         if ((start > (pp.right() + DrawPadding)) || (end < (pp.left() - DrawPadding)))
 796                 return;
 797
 798         if (a->start_sample() == a->end_sample())
 799                 draw_instant(a, p, start, y);
 800         else
 801                 draw_range(a, p, start, end, y, pp, row.title_width);
 802 }
 803
 804 void DecodeTrace::draw_annotation_block(qreal start, qreal end,
 805         Annotation::Class ann_class, bool use_ann_format, QPainter &p, int y,
 806         const DecodeTraceRow& row) const
 807 {
 808         const double top = y + .5 - annotation_height_ / 2;
 809         const double bottom = y + .5 + annotation_height_ / 2;
 810         const double width = end - start;
 811
 812         // If all annotations in this block are of the same type, we can use the
 813         // one format that all of these annotations have. Otherwise, we should use
 814         // a neutral color (i.e. gray)
 815         if (use_ann_format) {
 816                 p.setPen(row.ann_class_dark_color.at(ann_class));
 817                 p.setBrush(QBrush(row.ann_class_color.at(ann_class), Qt::Dense4Pattern));
 818         } else {
 819                 p.setPen(QColor(Qt::darkGray));
 820                 p.setBrush(QBrush(Qt::gray, Qt::Dense4Pattern));
 821         }
 822
 823         if (width <= 1)
 824                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 825         else {
 826                 const QRectF rect(start, top, width, bottom - top);
 827                 const int r = annotation_height_ / 4;
 828                 p.drawRoundedRect(rect, r, r);
 829         }
 830 }
 831
 832 void DecodeTrace::draw_instant(const Annotation* a, QPainter &p, qreal x, int y) const
 833 {
 834         const QString text = a->annotations()->empty() ?
 835                 QString() : a->annotations()->back();
 836         const qreal w = min((qreal)p.boundingRect(QRectF(), 0, text).width(),
 837                 0.0) + annotation_height_;
 838         const QRectF rect(x - w / 2, y - annotation_height_ / 2, w, annotation_height_);
 839
 840         p.drawRoundedRect(rect, annotation_height_ / 2, annotation_height_ / 2);
 841
 842         p.setPen(Qt::black);
 843         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 844 }
 845
 846 void DecodeTrace::draw_range(const Annotation* a, QPainter &p,
 847         qreal start, qreal end, int y, const ViewItemPaintParams &pp,
 848         int row_title_width) const
 849 {
 850         const qreal top = y + .5 - annotation_height_ / 2;
 851         const qreal bottom = y + .5 + annotation_height_ / 2;
 852         const vector<QString>* annotations = a->annotations();
 853
 854         // If the two ends are within 1 pixel, draw a vertical line
 855         if (start + 1.0 > end) {
 856                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 857                 return;
 858         }
 859
 860         const qreal cap_width = min((end - start) / 4, EndCapWidth);
 861
 862         QPointF pts[] = {
 863                 QPointF(start, y + .5f),
 864                 QPointF(start + cap_width, top),
 865                 QPointF(end - cap_width, top),
 866                 QPointF(end, y + .5f),
 867                 QPointF(end - cap_width, bottom),
 868                 QPointF(start + cap_width, bottom)
 869         };
 870
 871         p.drawConvexPolygon(pts, countof(pts));
 872
 873         if (annotations->empty())
 874                 return;
 875
 876         const int ann_start = start + cap_width;
 877         const int ann_end = end - cap_width;
 878
 879         const int real_start = max(ann_start, pp.left() + ArrowSize + row_title_width);
 880         const int real_end = min(ann_end, pp.right());
 881         const int real_width = real_end - real_start;
 882
 883         QRectF rect(real_start, y - annotation_height_ / 2, real_width, annotation_height_);
 884         if (rect.width() <= 4)
 885                 return;
 886
 887         p.setPen(Qt::black);
 888
 889         // Try to find an annotation that will fit
 890         QString best_annotation;
 891         int best_width = 0;
 892
 893         for (const QString &s : *annotations) {
 894                 const int w = p.boundingRect(QRectF(), 0, s).width();
 895                 if (w <= rect.width() && w > best_width)
 896                         best_annotation = s, best_width = w;
 897         }
 898
 899         if (best_annotation.isEmpty())
 900                 best_annotation = annotations->back();
 901
 902         // If not ellide the last in the list
 903         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 904                 best_annotation, Qt::ElideRight, rect.width()));
 905 }
 906
 907 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 908         const ViewItemPaintParams &pp)
 909 {
 910         const int y = get_visual_y();
 911
 912         double samples_per_pixel, pixels_offset;
 913         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 914
 915         p.setPen(ErrorBgColor.darker());
 916         p.setBrush(ErrorBgColor);
 917
 918         const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
 919
 920         const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
 921         const qreal r = text_rect.height() / 4;
 922
 923         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
 924
 925         p.setPen(Qt::black);
 926         p.drawText(text_rect, message);
 927 }
 928
 929 void DecodeTrace::draw_unresolved_period(QPainter &p, int left, int right) const
 930 {
 931         double samples_per_pixel, pixels_offset;
 932
 933         const int64_t sample_count = decode_signal_->get_working_sample_count(current_segment_);
 934         if (sample_count == 0)
 935                 return;
 936
 937         const int64_t samples_decoded = decode_signal_->get_decoded_sample_count(current_segment_, true);
 938         if (sample_count == samples_decoded)
 939                 return;
 940
 941         const int y = get_visual_y();
 942
 943         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 944
 945         const double start = max(samples_decoded /
 946                 samples_per_pixel - pixels_offset, left - 1.0);
 947         const double end = min(sample_count / samples_per_pixel -
 948                 pixels_offset, right + 1.0);
 949         const QRectF no_decode_rect(start, y - (annotation_height_ / 2) - 0.5,
 950                 end - start, annotation_height_);
 951
 952         p.setPen(QPen(Qt::NoPen));
 953         p.setBrush(Qt::white);
 954         p.drawRect(no_decode_rect);
 955
 956         p.setPen(NoDecodeColor);
 957         p.setBrush(QBrush(NoDecodeColor, Qt::Dense6Pattern));
 958         p.drawRect(no_decode_rect);
 959 }
 960
 961 pair<double, double> DecodeTrace::get_pixels_offset_samples_per_pixel() const
 962 {
 963         assert(owner_);
 964
 965         const View *view = owner_->view();
 966         assert(view);
 967
 968         const double scale = view->scale();
 969         assert(scale > 0);
 970
 971         const double pixels_offset =
 972                 ((view->offset() - decode_signal_->start_time()) / scale).convert_to<double>();
 973
 974         double samplerate = decode_signal_->samplerate();
 975
 976         // Show sample rate as 1Hz when it is unknown
 977         if (samplerate == 0.0)
 978                 samplerate = 1.0;
 979
 980         return make_pair(pixels_offset, samplerate * scale);
 981 }
 982
 983 pair<uint64_t, uint64_t> DecodeTrace::get_view_sample_range(
 984         int x_start, int x_end) const
 985 {
 986         double samples_per_pixel, pixels_offset;
 987         tie(pixels_offset, samples_per_pixel) =
 988                 get_pixels_offset_samples_per_pixel();
 989
 990         const uint64_t start = (uint64_t)max(
 991                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
 992         const uint64_t end = (uint64_t)max(
 993                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
 994
 995         return make_pair(start, end);
 996 }
 997
 998 QColor DecodeTrace::get_row_color(int row_index) const
 999 {
1000         // For each row color, use the base color hue and add an offset that's
1001         // not a dividend of 360
1002
1003         QColor color;
1004         const int h = (base_->color().toHsv().hue() + 20 * row_index) % 360;
1005         const int s = DECODETRACE_COLOR_SATURATION;
1006         const int v = DECODETRACE_COLOR_VALUE;
1007         color.setHsl(h, s, v);
1008
1009         return color;
1010 }
1011
1012 QColor DecodeTrace::get_annotation_color(QColor row_color, int annotation_index) const
1013 {
1014         // For each row color, use the base color hue and add an offset that's
1015         // not a dividend of 360 and not a multiple of the row offset
1016
1017         QColor color(row_color);
1018         const int h = (color.toHsv().hue() + 55 * annotation_index) % 360;
1019         const int s = DECODETRACE_COLOR_SATURATION;
1020         const int v = DECODETRACE_COLOR_VALUE;
1021         color.setHsl(h, s, v);
1022
1023         return color;
1024 }
1025
1026 unsigned int DecodeTrace::get_row_y(const DecodeTraceRow* row) const
1027 {
1028         assert(row);
1029
1030         unsigned int y = get_visual_y();
1031
1032         for (const DecodeTraceRow& r : rows_) {
1033                 if (!r.currently_visible)
1034                         continue;
1035
1036                 if (row->decode_row == r.decode_row)
1037                         break;
1038                 else
1039                         y += r.height;
1040         }
1041
1042         return y;
1043 }
1044
1045 DecodeTraceRow* DecodeTrace::get_row_at_point(const QPoint &point)
1046 {
1047         int y = get_visual_y() - (default_row_height_ / 2);
1048
1049         for (DecodeTraceRow& r : rows_) {
1050                 if (!r.currently_visible)
1051                         continue;
1052
1053                 if ((point.y() >= y) && (point.y() < (int)(y + r.height)))
1054                         return &r;
1055
1056                 y += r.height;
1057         }
1058
1059         return nullptr;
1060 }
1061
1062 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
1063 {
1064         if (!enabled())
1065                 return QString();
1066
1067         const pair<uint64_t, uint64_t> sample_range =
1068                 get_view_sample_range(point.x(), point.x() + 1);
1069         const DecodeTraceRow* r = get_row_at_point(point);
1070
1071         if (!r)
1072                 return QString();
1073
1074         if (point.y() > (int)(get_row_y(r) + (annotation_height_ / 2)))
1075                 return QString();
1076
1077         deque<const Annotation*> annotations;
1078
1079         decode_signal_->get_annotation_subset(annotations, r->decode_row,
1080                 current_segment_, sample_range.first, sample_range.second);
1081
1082         return (annotations.empty()) ?
1083                 QString() : annotations[0]->annotations()->front();
1084 }
1085
1086 void DecodeTrace::create_decoder_form(int index, shared_ptr<Decoder> &dec,
1087         QWidget *parent, QFormLayout *form)
1088 {
1089         GlobalSettings settings;
1090
1091         assert(dec);
1092         const srd_decoder *const decoder = dec->get_srd_decoder();
1093         assert(decoder);
1094
1095         const bool decoder_deletable = index > 0;
1096
1097         pv::widgets::DecoderGroupBox *const group =
1098                 new pv::widgets::DecoderGroupBox(
1099                         QString::fromUtf8(decoder->name),
1100                         tr("%1:\n%2").arg(QString::fromUtf8(decoder->longname),
1101                                 QString::fromUtf8(decoder->desc)),
1102                         nullptr, decoder_deletable);
1103         group->set_decoder_visible(dec->visible());
1104
1105         if (decoder_deletable) {
1106                 delete_mapper_.setMapping(group, index);
1107                 connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
1108         }
1109
1110         show_hide_mapper_.setMapping(group, index);
1111         connect(group, SIGNAL(show_hide_decoder()),
1112                 &show_hide_mapper_, SLOT(map()));
1113
1114         QFormLayout *const decoder_form = new QFormLayout;
1115         group->add_layout(decoder_form);
1116
1117         const vector<DecodeChannel> channels = decode_signal_->get_channels();
1118
1119         // Add the channels
1120         for (const DecodeChannel& ch : channels) {
1121                 // Ignore channels not part of the decoder we create the form for
1122                 if (ch.decoder_ != dec)
1123                         continue;
1124
1125                 QComboBox *const combo = create_channel_selector(parent, &ch);
1126                 QComboBox *const combo_init_state = create_channel_selector_init_state(parent, &ch);
1127
1128                 channel_id_map_[combo] = ch.id;
1129                 init_state_map_[combo_init_state] = ch.id;
1130
1131                 connect(combo, SIGNAL(currentIndexChanged(int)),
1132                         this, SLOT(on_channel_selected(int)));
1133                 connect(combo_init_state, SIGNAL(currentIndexChanged(int)),
1134                         this, SLOT(on_init_state_changed(int)));
1135
1136                 QHBoxLayout *const hlayout = new QHBoxLayout;
1137                 hlayout->addWidget(combo);
1138                 hlayout->addWidget(combo_init_state);
1139
1140                 if (!settings.value(GlobalSettings::Key_Dec_InitialStateConfigurable).toBool())
1141                         combo_init_state->hide();
1142
1143                 const QString required_flag = ch.is_optional ? QString() : QString("*");
1144                 decoder_form->addRow(tr("<b>%1</b> (%2) %3")
1145                         .arg(ch.name, ch.desc, required_flag), hlayout);
1146         }
1147
1148         // Add the options
1149         shared_ptr<binding::Decoder> binding(
1150                 new binding::Decoder(decode_signal_, dec));
1151         binding->add_properties_to_form(decoder_form, true);
1152
1153         bindings_.push_back(binding);
1154
1155         form->addRow(group);
1156         decoder_forms_.push_back(group);
1157 }
1158
1159 QComboBox* DecodeTrace::create_channel_selector(QWidget *parent, const DecodeChannel *ch)
1160 {
1161         const auto sigs(session_.signalbases());
1162
1163         // Sort signals in natural order
1164         vector< shared_ptr<data::SignalBase> > sig_list(sigs.begin(), sigs.end());
1165         sort(sig_list.begin(), sig_list.end(),
1166                 [](const shared_ptr<data::SignalBase> &a,
1167                 const shared_ptr<data::SignalBase> &b) {
1168                         return strnatcasecmp(a->name().toStdString(),
1169                                 b->name().toStdString()) < 0; });
1170
1171         QComboBox *selector = new QComboBox(parent);
1172
1173         selector->addItem("-", qVariantFromValue((void*)nullptr));
1174
1175         if (!ch->assigned_signal)
1176                 selector->setCurrentIndex(0);
1177
1178         for (const shared_ptr<data::SignalBase> &b : sig_list) {
1179                 assert(b);
1180                 if (b->logic_data() && b->enabled()) {
1181                         selector->addItem(b->name(),
1182                                 qVariantFromValue((void*)b.get()));
1183
1184                         if (ch->assigned_signal == b.get())
1185                                 selector->setCurrentIndex(selector->count() - 1);
1186                 }
1187         }
1188
1189         return selector;
1190 }
1191
1192 QComboBox* DecodeTrace::create_channel_selector_init_state(QWidget *parent,
1193         const DecodeChannel *ch)
1194 {
1195         QComboBox *selector = new QComboBox(parent);
1196
1197         selector->addItem("0", qVariantFromValue((int)SRD_INITIAL_PIN_LOW));
1198         selector->addItem("1", qVariantFromValue((int)SRD_INITIAL_PIN_HIGH));
1199         selector->addItem("X", qVariantFromValue((int)SRD_INITIAL_PIN_SAME_AS_SAMPLE0));
1200
1201         selector->setCurrentIndex(ch->initial_pin_state);
1202
1203         selector->setToolTip("Initial (assumed) pin value before the first sample");
1204
1205         return selector;
1206 }
1207
1208 void DecodeTrace::export_annotations(deque<const Annotation*>& annotations) const
1209 {
1210         GlobalSettings settings;
1211         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
1212
1213         const QString file_name = QFileDialog::getSaveFileName(
1214                 owner_->view(), tr("Export annotations"), dir, tr("Text Files (*.txt);;All Files (*)"));
1215
1216         if (file_name.isEmpty())
1217                 return;
1218
1219         QString format = settings.value(GlobalSettings::Key_Dec_ExportFormat).toString();
1220         const QString quote = format.contains("%q") ? "\"" : "";
1221         format = format.remove("%q");
1222
1223         const bool has_sample_range   = format.contains("%s");
1224         const bool has_row_name       = format.contains("%r");
1225         const bool has_dec_name       = format.contains("%d");
1226         const bool has_class_name     = format.contains("%c");
1227         const bool has_first_ann_text = format.contains("%1");
1228         const bool has_all_ann_text   = format.contains("%a");
1229
1230         QFile file(file_name);
1231         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
1232                 QTextStream out_stream(&file);
1233
1234                 for (const Annotation* ann : annotations) {
1235                         QString out_text = format;
1236
1237                         if (has_sample_range) {
1238                                 const QString sample_range = QString("%1-%2") \
1239                                         .arg(QString::number(ann->start_sample()), QString::number(ann->end_sample()));
1240                                 out_text = out_text.replace("%s", sample_range);
1241                         }
1242
1243                         if (has_dec_name)
1244                                 out_text = out_text.replace("%d",
1245                                         quote + QString::fromUtf8(ann->row()->decoder()->name()) + quote);
1246
1247                         if (has_row_name) {
1248                                 const QString row_name = quote + ann->row()->description() + quote;
1249                                 out_text = out_text.replace("%r", row_name);
1250                         }
1251
1252                         if (has_class_name) {
1253                                 const QString class_name = quote + ann->ann_class_name() + quote;
1254                                 out_text = out_text.replace("%c", class_name);
1255                         }
1256
1257                         if (has_first_ann_text) {
1258                                 const QString first_ann_text = quote + ann->annotations()->front() + quote;
1259                                 out_text = out_text.replace("%1", first_ann_text);
1260                         }
1261
1262                         if (has_all_ann_text) {
1263                                 QString all_ann_text;
1264                                 for (const QString &s : *(ann->annotations()))
1265                                         all_ann_text = all_ann_text + quote + s + quote + ",";
1266                                 all_ann_text.chop(1);
1267
1268                                 out_text = out_text.replace("%a", all_ann_text);
1269                         }
1270
1271                         out_stream << out_text << '\n';
1272                 }
1273
1274                 if (out_stream.status() == QTextStream::Ok)
1275                         return;
1276         }
1277
1278         QMessageBox msg(owner_->view());
1279         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
1280         msg.setStandardButtons(QMessageBox::Ok);
1281         msg.setIcon(QMessageBox::Warning);
1282         msg.exec();
1283 }
1284
1285 void DecodeTrace::initialize_row_widgets(DecodeTraceRow* r, unsigned int row_id)
1286 {
1287         // Set colors and fixed widths
1288         QFontMetrics m(QApplication::font());
1289
1290         QPalette header_palette = owner_->view()->palette();
1291         QPalette selector_palette = owner_->view()->palette();
1292
1293         if (GlobalSettings::current_theme_is_dark()) {
1294                 header_palette.setColor(QPalette::Background,
1295                         QColor(255, 255, 255, ExpansionAreaHeaderAlpha));
1296                 selector_palette.setColor(QPalette::Background,
1297                         QColor(255, 255, 255, ExpansionAreaAlpha));
1298         } else {
1299                 header_palette.setColor(QPalette::Background,
1300                         QColor(0, 0, 0, ExpansionAreaHeaderAlpha));
1301                 selector_palette.setColor(QPalette::Background,
1302                         QColor(0, 0, 0, ExpansionAreaAlpha));
1303         }
1304
1305         const int w = m.boundingRect(r->decode_row->title()).width() + RowTitleMargin;
1306         r->title_width = w;
1307
1308         // Set up top-level container
1309         connect(r->container, SIGNAL(widgetResized(QWidget*)),
1310                 this, SLOT(on_row_container_resized(QWidget*)));
1311
1312         QVBoxLayout* vlayout = new QVBoxLayout();
1313         r->container->setLayout(vlayout);
1314
1315         // Add header container
1316         vlayout->addWidget(r->header_container);
1317         vlayout->setContentsMargins(0, 0, 0, 0);
1318         vlayout->setSpacing(0);
1319         QHBoxLayout* header_container_layout = new QHBoxLayout();
1320         r->header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
1321         r->header_container->setMinimumSize(0, default_row_height_);
1322         r->header_container->setLayout(header_container_layout);
1323         r->header_container->layout()->setContentsMargins(10, 2, 10, 2);
1324
1325         r->header_container->setAutoFillBackground(true);
1326         r->header_container->setPalette(header_palette);
1327
1328         // Add widgets inside the header container
1329         QCheckBox* cb = new QCheckBox();
1330         r->row_visibility_checkbox = cb;
1331         header_container_layout->addWidget(cb);
1332         cb->setText(tr("Show this row"));
1333         cb->setChecked(r->decode_row->visible());
1334
1335         row_show_hide_mapper_.setMapping(cb, row_id);
1336         connect(cb, SIGNAL(stateChanged(int)),
1337                 &row_show_hide_mapper_, SLOT(map()));
1338
1339         QPushButton* btn = new QPushButton();
1340         header_container_layout->addWidget(btn);
1341         btn->setFlat(true);
1342         btn->setStyleSheet(":hover { background-color: palette(button); color: palette(button-text); border:0; }");
1343         btn->setText(tr("Show All"));
1344         btn->setProperty("decode_trace_row_ptr", QVariant::fromValue((void*)r));
1345         connect(btn, SIGNAL(clicked(bool)), this, SLOT(on_show_all_classes()));
1346
1347         btn = new QPushButton();
1348         header_container_layout->addWidget(btn);
1349         btn->setFlat(true);
1350         btn->setStyleSheet(":hover { background-color: palette(button); color: palette(button-text); border:0; }");
1351         btn->setText(tr("Hide All"));
1352         btn->setProperty("decode_trace_row_ptr", QVariant::fromValue((void*)r));
1353         connect(btn, SIGNAL(clicked(bool)), this, SLOT(on_hide_all_classes()));
1354
1355         header_container_layout->addStretch(); // To left-align the header widgets
1356
1357         // Add selector container
1358         vlayout->addWidget(r->selector_container);
1359         r->selector_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
1360         r->selector_container->setLayout(new FlowLayout(r->selector_container));
1361
1362         r->selector_container->setAutoFillBackground(true);
1363         r->selector_container->setPalette(selector_palette);
1364
1365         // Add all classes that can be toggled
1366         vector<AnnotationClass*> ann_classes = r->decode_row->ann_classes();
1367
1368         for (const AnnotationClass* ann_class : ann_classes) {
1369                 cb = new QCheckBox();
1370                 cb->setText(tr(ann_class->description));
1371                 cb->setChecked(ann_class->visible);
1372
1373                 int dim = ViewItemPaintParams::text_height() - 2;
1374                 QPixmap pixmap(dim, dim);
1375                 pixmap.fill(r->ann_class_color[ann_class->id]);
1376                 cb->setIcon(pixmap);
1377
1378                 r->selector_container->layout()->addWidget(cb);
1379                 r->selectors.push_back(cb);
1380
1381                 cb->setProperty("ann_class_ptr", QVariant::fromValue((void*)ann_class));
1382                 cb->setProperty("decode_trace_row_ptr", QVariant::fromValue((void*)r));
1383
1384                 class_show_hide_mapper_.setMapping(cb, cb);
1385                 connect(cb, SIGNAL(stateChanged(int)),
1386                         &class_show_hide_mapper_, SLOT(map()));
1387         }
1388 }
1389
1390 void DecodeTrace::update_rows()
1391 {
1392         if (!owner_)
1393                 return;
1394
1395         lock_guard<mutex> lock(row_modification_mutex_);
1396
1397         for (DecodeTraceRow& r : rows_)
1398                 r.exists = false;
1399
1400         unsigned int row_id = 0;
1401         for (Row* decode_row : decode_signal_->get_rows()) {
1402                 // Find row in our list
1403                 auto r_it = find_if(rows_.begin(), rows_.end(),
1404                         [&](DecodeTraceRow& r){ return r.decode_row == decode_row; });
1405
1406                 DecodeTraceRow* r = nullptr;
1407                 if (r_it == rows_.end()) {
1408                         // Row doesn't exist yet, create and append it
1409                         DecodeTraceRow nr;
1410                         nr.decode_row = decode_row;
1411                         nr.height = default_row_height_;
1412                         nr.expanded_height = default_row_height_;
1413                         nr.currently_visible = false;
1414                         nr.has_hidden_classes = decode_row->has_hidden_classes();
1415                         nr.expand_marker_highlighted = false;
1416                         nr.expanding = false;
1417                         nr.expanded = false;
1418                         nr.collapsing = false;
1419                         nr.expand_marker_shape = default_marker_shape_;
1420                         nr.container = new ContainerWidget(owner_->view()->scrollarea());
1421                         nr.header_container = new QWidget(nr.container);
1422                         nr.selector_container = new QWidget(nr.container);
1423
1424                         nr.row_color = get_row_color(decode_row->index());
1425
1426                         vector<AnnotationClass*> ann_classes = decode_row->ann_classes();
1427                         for (const AnnotationClass* ann_class : ann_classes) {
1428                                 nr.ann_class_color[ann_class->id] =
1429                                         get_annotation_color(nr.row_color, ann_class->id);
1430                                 nr.ann_class_dark_color[ann_class->id] =
1431                                         nr.ann_class_color[ann_class->id].darker();
1432                         }
1433
1434                         rows_.push_back(nr);
1435                         r = &rows_.back();
1436                         initialize_row_widgets(r, row_id);
1437                 } else
1438                         r = &(*r_it);
1439
1440                 r->exists = true;
1441                 row_id++;
1442         }
1443
1444         // If there's only one row, it must not be hidden or else it can't be un-hidden
1445         if (row_id == 1)
1446                 rows_.front().row_visibility_checkbox->setEnabled(false);
1447
1448         // Remove any rows that no longer exist, obeying that iterators are invalidated
1449         bool any_exists;
1450         do {
1451                 any_exists = false;
1452
1453                 for (unsigned int i = 0; i < rows_.size(); i++)
1454                         if (!rows_[i].exists) {
1455                                 delete rows_[i].row_visibility_checkbox;
1456
1457                                 for (QCheckBox* cb : rows_[i].selectors)
1458                                         delete cb;
1459
1460                                 delete rows_[i].selector_container;
1461                                 delete rows_[i].header_container;
1462                                 delete rows_[i].container;
1463
1464                                 rows_.erase(rows_.begin() + i);
1465                                 any_exists = true;
1466                                 break;
1467                         }
1468         } while (any_exists);
1469 }
1470
1471 void DecodeTrace::set_row_expanded(DecodeTraceRow* r)
1472 {
1473         r->height = r->expanded_height;
1474         r->expanding = false;
1475         r->expanded = true;
1476
1477         // For details on this, see on_animation_timer()
1478         r->expand_marker_shape.setPoint(0, 0, 0);
1479         r->expand_marker_shape.setPoint(1, ArrowSize, ArrowSize);
1480         r->expand_marker_shape.setPoint(2, 2*ArrowSize, 0);
1481
1482         r->container->resize(owner_->view()->viewport()->width() - r->container->pos().x(),
1483                 r->height - 2 * default_row_height_);
1484 }
1485
1486 void DecodeTrace::set_row_collapsed(DecodeTraceRow* r)
1487 {
1488         r->height = default_row_height_;
1489         r->collapsing = false;
1490         r->expanded = false;
1491         r->expand_marker_shape = default_marker_shape_;
1492         r->container->setVisible(false);
1493
1494         r->container->resize(owner_->view()->viewport()->width() - r->container->pos().x(),
1495                 r->height - 2 * default_row_height_);
1496 }
1497
1498 void DecodeTrace::update_expanded_rows()
1499 {
1500         for (DecodeTraceRow& r : rows_) {
1501                 if (r.expanding || r.expanded)
1502                         r.expanded_height = 2 * default_row_height_ + r.container->sizeHint().height();
1503
1504                 if (r.expanded)
1505                         r.height = r.expanded_height;
1506
1507                 int x = 2 * ArrowSize;
1508                 int y = get_row_y(&r) + default_row_height_;
1509                 // Only update the position if it actually changes
1510                 if ((x != r.container->pos().x()) || (y != r.container->pos().y()))
1511                         r.container->move(x, y);
1512
1513                 int w = owner_->view()->viewport()->width() - x;
1514                 int h = r.height - 2 * default_row_height_;
1515                 // Only update the dimension if they actually change
1516                 if ((w != r.container->sizeHint().width()) || (h != r.container->sizeHint().height()))
1517                         r.container->resize(w, h);
1518         }
1519 }
1520
1521 void DecodeTrace::on_setting_changed(const QString &key, const QVariant &value)
1522 {
1523         Trace::on_setting_changed(key, value);
1524
1525         if (key == GlobalSettings::Key_Dec_AlwaysShowAllRows)
1526                 always_show_all_rows_ = value.toBool();
1527 }
1528
1529 void DecodeTrace::on_new_annotations()
1530 {
1531         if (!delayed_trace_updater_.isActive())
1532                 delayed_trace_updater_.start();
1533 }
1534
1535 void DecodeTrace::on_delayed_trace_update()
1536 {
1537         if (owner_)
1538                 owner_->row_item_appearance_changed(false, true);
1539 }
1540
1541 void DecodeTrace::on_decode_reset()
1542 {
1543         update_rows();
1544
1545         if (owner_)
1546                 owner_->row_item_appearance_changed(false, true);
1547 }
1548
1549 void DecodeTrace::on_decode_finished()
1550 {
1551         if (owner_)
1552                 owner_->row_item_appearance_changed(false, true);
1553 }
1554
1555 void DecodeTrace::on_pause_decode()
1556 {
1557         if (decode_signal_->is_paused())
1558                 decode_signal_->resume_decode();
1559         else
1560                 decode_signal_->pause_decode();
1561 }
1562
1563 void DecodeTrace::on_delete()
1564 {
1565         session_.remove_decode_signal(decode_signal_);
1566 }
1567
1568 void DecodeTrace::on_channel_selected(int)
1569 {
1570         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1571
1572         // Determine signal that was selected
1573         const data::SignalBase *signal =
1574                 (data::SignalBase*)cb->itemData(cb->currentIndex()).value<void*>();
1575
1576         // Determine decode channel ID this combo box is the channel selector for
1577         const uint16_t id = channel_id_map_.at(cb);
1578
1579         decode_signal_->assign_signal(id, signal);
1580 }
1581
1582 void DecodeTrace::on_channels_updated()
1583 {
1584         if (owner_)
1585                 owner_->row_item_appearance_changed(false, true);
1586 }
1587
1588 void DecodeTrace::on_init_state_changed(int)
1589 {
1590         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1591
1592         // Determine inital pin state that was selected
1593         int init_state = cb->itemData(cb->currentIndex()).value<int>();
1594
1595         // Determine decode channel ID this combo box is the channel selector for
1596         const uint16_t id = init_state_map_.at(cb);
1597
1598         decode_signal_->set_initial_pin_state(id, init_state);
1599 }
1600
1601 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
1602 {
1603         decode_signal_->stack_decoder(decoder);
1604         update_rows();
1605
1606         create_popup_form();
1607 }
1608
1609 void DecodeTrace::on_delete_decoder(int index)
1610 {
1611         decode_signal_->remove_decoder(index);
1612         update_rows();
1613
1614         owner_->extents_changed(false, true);
1615
1616         create_popup_form();
1617 }
1618
1619 void DecodeTrace::on_show_hide_decoder(int index)
1620 {
1621         const bool state = decode_signal_->toggle_decoder_visibility(index);
1622
1623         assert(index < (int)decoder_forms_.size());
1624         decoder_forms_[index]->set_decoder_visible(state);
1625
1626         if (!state)
1627                 owner_->extents_changed(false, true);
1628
1629         owner_->row_item_appearance_changed(false, true);
1630 }
1631
1632 void DecodeTrace::on_show_hide_row(int row_id)
1633 {
1634         if (row_id >= (int)rows_.size())
1635                 return;
1636
1637         rows_[row_id].decode_row->set_visible(!rows_[row_id].decode_row->visible());
1638
1639         if (!rows_[row_id].decode_row->visible())
1640                 set_row_collapsed(&rows_[row_id]);
1641
1642         owner_->extents_changed(false, true);
1643         owner_->row_item_appearance_changed(false, true);
1644 }
1645
1646 void DecodeTrace::on_show_hide_class(QWidget* sender)
1647 {
1648         void* ann_class_ptr = sender->property("ann_class_ptr").value<void*>();
1649         assert(ann_class_ptr);
1650         AnnotationClass* ann_class = (AnnotationClass*)ann_class_ptr;
1651
1652         ann_class->visible = !ann_class->visible;
1653
1654         void* row_ptr = sender->property("decode_trace_row_ptr").value<void*>();
1655         assert(row_ptr);
1656         DecodeTraceRow* row = (DecodeTraceRow*)row_ptr;
1657
1658         row->has_hidden_classes = row->decode_row->has_hidden_classes();
1659
1660         owner_->row_item_appearance_changed(false, true);
1661 }
1662
1663 void DecodeTrace::on_show_all_classes()
1664 {
1665         void* row_ptr = QObject::sender()->property("decode_trace_row_ptr").value<void*>();
1666         assert(row_ptr);
1667         DecodeTraceRow* row = (DecodeTraceRow*)row_ptr;
1668
1669         for (QCheckBox* cb : row->selectors)
1670                 cb->setChecked(true);
1671
1672         row->has_hidden_classes = false;
1673
1674         owner_->row_item_appearance_changed(false, true);
1675 }
1676
1677 void DecodeTrace::on_hide_all_classes()
1678 {
1679         void* row_ptr = QObject::sender()->property("decode_trace_row_ptr").value<void*>();
1680         assert(row_ptr);
1681         DecodeTraceRow* row = (DecodeTraceRow*)row_ptr;
1682
1683         for (QCheckBox* cb : row->selectors)
1684                 cb->setChecked(false);
1685
1686         row->has_hidden_classes = true;
1687
1688         owner_->row_item_appearance_changed(false, true);
1689 }
1690
1691 void DecodeTrace::on_row_container_resized(QWidget* sender)
1692 {
1693         sender->update();
1694
1695         owner_->extents_changed(false, true);
1696         owner_->row_item_appearance_changed(false, true);
1697 }
1698
1699 void DecodeTrace::on_copy_annotation_to_clipboard()
1700 {
1701         if (!selected_row_)
1702                 return;
1703
1704         deque<const Annotation*> annotations;
1705
1706         decode_signal_->get_annotation_subset(annotations, selected_row_,
1707                 current_segment_, selected_sample_range_.first, selected_sample_range_.first);
1708
1709         if (annotations.empty())
1710                 return;
1711
1712         QClipboard *clipboard = QApplication::clipboard();
1713         clipboard->setText(annotations.front()->annotations()->front(), QClipboard::Clipboard);
1714
1715         if (clipboard->supportsSelection())
1716                 clipboard->setText(annotations.front()->annotations()->front(), QClipboard::Selection);
1717 }
1718
1719 void DecodeTrace::on_export_row()
1720 {
1721         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1722         on_export_row_from_here();
1723 }
1724
1725 void DecodeTrace::on_export_all_rows()
1726 {
1727         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1728         on_export_all_rows_from_here();
1729 }
1730
1731 void DecodeTrace::on_export_row_with_cursor()
1732 {
1733         const View *view = owner_->view();
1734         assert(view);
1735
1736         if (!view->cursors()->enabled())
1737                 return;
1738
1739         const double samplerate = session_.get_samplerate();
1740
1741         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1742         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1743
1744         const uint64_t start_sample = (uint64_t)max(
1745                 0.0, start_time.convert_to<double>() * samplerate);
1746         const uint64_t end_sample = (uint64_t)max(
1747                 0.0, end_time.convert_to<double>() * samplerate);
1748
1749         // Are both cursors negative and thus were clamped to 0?
1750         if ((start_sample == 0) && (end_sample == 0))
1751                 return;
1752
1753         selected_sample_range_ = make_pair(start_sample, end_sample);
1754         on_export_row_from_here();
1755 }
1756
1757 void DecodeTrace::on_export_all_rows_with_cursor()
1758 {
1759         const View *view = owner_->view();
1760         assert(view);
1761
1762         if (!view->cursors()->enabled())
1763                 return;
1764
1765         const double samplerate = session_.get_samplerate();
1766
1767         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1768         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1769
1770         const uint64_t start_sample = (uint64_t)max(
1771                 0.0, start_time.convert_to<double>() * samplerate);
1772         const uint64_t end_sample = (uint64_t)max(
1773                 0.0, end_time.convert_to<double>() * samplerate);
1774
1775         // Are both cursors negative and thus were clamped to 0?
1776         if ((start_sample == 0) && (end_sample == 0))
1777                 return;
1778
1779         selected_sample_range_ = make_pair(start_sample, end_sample);
1780         on_export_all_rows_from_here();
1781 }
1782
1783 void DecodeTrace::on_export_row_from_here()
1784 {
1785         if (!selected_row_)
1786                 return;
1787
1788         deque<const Annotation*> annotations;
1789
1790         decode_signal_->get_annotation_subset(annotations, selected_row_,
1791                 current_segment_, selected_sample_range_.first, selected_sample_range_.second);
1792
1793         if (annotations.empty())
1794                 return;
1795
1796         export_annotations(annotations);
1797 }
1798
1799 void DecodeTrace::on_export_all_rows_from_here()
1800 {
1801         deque<const Annotation*> annotations;
1802
1803         decode_signal_->get_annotation_subset(annotations, current_segment_,
1804                         selected_sample_range_.first, selected_sample_range_.second);
1805
1806         if (!annotations.empty())
1807                 export_annotations(annotations);
1808 }
1809
1810 void DecodeTrace::on_animation_timer()
1811 {
1812         bool animation_finished = true;
1813
1814         for (DecodeTraceRow& r : rows_) {
1815                 if (!(r.expanding || r.collapsing))
1816                         continue;
1817
1818                 unsigned int height_delta = r.expanded_height - default_row_height_;
1819
1820                 if (r.expanding) {
1821                         if (r.height < r.expanded_height) {
1822                                 r.anim_height += height_delta / (float)AnimationDurationInTicks;
1823                                 r.height = min((int)r.anim_height, (int)r.expanded_height);
1824                                 r.anim_shape += ArrowSize / (float)AnimationDurationInTicks;
1825                                 animation_finished = false;
1826                         } else
1827                                 set_row_expanded(&r);
1828                 }
1829
1830                 if (r.collapsing) {
1831                         if (r.height > default_row_height_) {
1832                                 r.anim_height -= height_delta / (float)AnimationDurationInTicks;
1833                                 r.height = max((int)r.anim_height, (int)0);
1834                                 r.anim_shape -= ArrowSize / (float)AnimationDurationInTicks;
1835                                 animation_finished = false;
1836                         } else
1837                                 set_row_collapsed(&r);
1838                 }
1839
1840                 // The expansion marker shape switches between
1841                 // 0/-A, A/0,  0/A (default state; anim_shape=0) and
1842                 // 0/ 0, A/A, 2A/0 (expanded state; anim_shape=ArrowSize)
1843
1844                 r.expand_marker_shape.setPoint(0, 0, -ArrowSize + r.anim_shape);
1845                 r.expand_marker_shape.setPoint(1, ArrowSize, r.anim_shape);
1846                 r.expand_marker_shape.setPoint(2, 2*r.anim_shape, ArrowSize - r.anim_shape);
1847         }
1848
1849         if (animation_finished)
1850                 animation_timer_.stop();
1851
1852         owner_->extents_changed(false, true);
1853         owner_->row_item_appearance_changed(false, true);
1854 }
1855
1856 void DecodeTrace::on_hide_hidden_rows()
1857 {
1858         // Make all hidden traces invisible again unless the user is hovering over a row name
1859         bool any_highlighted = false;
1860
1861         for (DecodeTraceRow& r : rows_)
1862                 if (r.expand_marker_highlighted)
1863                         any_highlighted = true;
1864
1865         if (!any_highlighted) {
1866                 show_hidden_rows_ = false;
1867
1868                 owner_->extents_changed(false, true);
1869                 owner_->row_item_appearance_changed(false, true);
1870         }
1871 }
1872
1873 } // namespace trace
1874 } // namespace views
1875 } // namespace pv