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