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