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