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