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::decode::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                 auto cached_width = row_title_widths_.find(row);
 202
 203                 if (cached_width != row_title_widths_.end())
 204                         row_title_width = cached_width->second;
 205                 else {
 206                         const int w = p.boundingRect(QRectF(), 0, row.title()).width() +
 207                                 RowTitleMargin;
 208                         row_title_widths_[row] = w;
 209                         row_title_width = w;
 210                 }
 211
 212                 vector<Annotation> annotations;
 213                 decode_signal_->get_annotation_subset(annotations, row,
 214                         current_segment_, sample_range.first, sample_range.second);
 215                 if (always_show_all_rows_ || !annotations.empty()) {
 216                         draw_annotations(annotations, p, annotation_height, pp, y,
 217                                 get_row_color(row.index()), row_title_width);
 218                         y += row_height_;
 219                         visible_rows_.push_back(row);
 220                 }
 221         }
 222
 223         draw_unresolved_period(p, annotation_height, pp.left(), pp.right());
 224
 225         if ((int)visible_rows_.size() > max_visible_rows_) {
 226                 max_visible_rows_ = (int)visible_rows_.size();
 227
 228                 // Call order is important, otherwise the lazy event handler won't work
 229                 owner_->extents_changed(false, true);
 230                 owner_->row_item_appearance_changed(false, true);
 231         }
 232
 233         const QString err = decode_signal_->error_message();
 234         if (!err.isEmpty())
 235                 draw_error(p, err, pp);
 236 }
 237
 238 void DecodeTrace::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 239 {
 240         assert(row_height_);
 241
 242         for (size_t i = 0; i < visible_rows_.size(); i++) {
 243                 const int y = i * row_height_ + get_visual_y();
 244
 245                 p.setPen(QPen(Qt::NoPen));
 246                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 247
 248                 if (i != 0) {
 249                         const QPointF points[] = {
 250                                 QPointF(pp.left(), y - ArrowSize),
 251                                 QPointF(pp.left() + ArrowSize, y),
 252                                 QPointF(pp.left(), y + ArrowSize)
 253                         };
 254                         p.drawPolygon(points, countof(points));
 255                 }
 256
 257                 const QRect r(pp.left() + ArrowSize * 2, y - row_height_ / 2,
 258                         pp.right() - pp.left(), row_height_);
 259                 const QString h(visible_rows_[i].title());
 260                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
 261                         Qt::TextDontClip;
 262
 263                 // Draw the outline
 264                 p.setPen(QApplication::palette().color(QPalette::Base));
 265                 for (int dx = -1; dx <= 1; dx++)
 266                         for (int dy = -1; dy <= 1; dy++)
 267                                 if (dx != 0 && dy != 0)
 268                                         p.drawText(r.translated(dx, dy), f, h);
 269
 270                 // Draw the text
 271                 p.setPen(QApplication::palette().color(QPalette::WindowText));
 272                 p.drawText(r, f, h);
 273         }
 274
 275         if (show_hover_marker_)
 276                 paint_hover_marker(p);
 277 }
 278
 279 void DecodeTrace::update_stack_button()
 280 {
 281         const vector< shared_ptr<data::decode::Decoder> > &stack = decode_signal_->decoder_stack();
 282
 283         // Only show decoders in the menu that can be stacked onto the last one in the stack
 284         if (!stack.empty()) {
 285                 const srd_decoder* d = stack.back()->decoder();
 286
 287                 if (d->outputs) {
 288                         pv::widgets::DecoderMenu *const decoder_menu =
 289                                 new pv::widgets::DecoderMenu(stack_button_, (const char*)(d->outputs->data));
 290                         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 291                                 this, SLOT(on_stack_decoder(srd_decoder*)));
 292
 293                         decoder_menu->setStyleSheet("QMenu { menu-scrollable: 1; }");
 294
 295                         stack_button_->setMenu(decoder_menu);
 296                         stack_button_->show();
 297                         return;
 298                 }
 299         }
 300
 301         // No decoders available for stacking
 302         stack_button_->setMenu(nullptr);
 303         stack_button_->hide();
 304 }
 305
 306 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 307 {
 308         using pv::data::decode::Decoder;
 309
 310         assert(form);
 311
 312         // Add the standard options
 313         Trace::populate_popup_form(parent, form);
 314
 315         // Add the decoder options
 316         bindings_.clear();
 317         channel_id_map_.clear();
 318         init_state_map_.clear();
 319         decoder_forms_.clear();
 320
 321         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
 322
 323         if (stack.empty()) {
 324                 QLabel *const l = new QLabel(
 325                         tr("<p><i>No decoders in the stack</i></p>"));
 326                 l->setAlignment(Qt::AlignCenter);
 327                 form->addRow(l);
 328         } else {
 329                 auto iter = stack.cbegin();
 330                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 331                         shared_ptr<Decoder> dec(*iter);
 332                         create_decoder_form(i, dec, parent, form);
 333                 }
 334
 335                 form->addRow(new QLabel(
 336                         tr("<i>* Required channels</i>"), parent));
 337         }
 338
 339         // Add stacking button
 340         stack_button_ = new QPushButton(tr("Stack Decoder"), parent);
 341         stack_button_->setToolTip(tr("Stack a higher-level decoder on top of this one"));
 342         update_stack_button();
 343
 344         QHBoxLayout *stack_button_box = new QHBoxLayout;
 345         stack_button_box->addWidget(stack_button_, 0, Qt::AlignRight);
 346         form->addRow(stack_button_box);
 347 }
 348
 349 QMenu* DecodeTrace::create_header_context_menu(QWidget *parent)
 350 {
 351         QMenu *const menu = Trace::create_header_context_menu(parent);
 352
 353         menu->addSeparator();
 354
 355         QAction *const del = new QAction(tr("Delete"), this);
 356         del->setShortcuts(QKeySequence::Delete);
 357         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 358         menu->addAction(del);
 359
 360         return menu;
 361 }
 362
 363 QMenu* DecodeTrace::create_view_context_menu(QWidget *parent, QPoint &click_pos)
 364 {
 365         // Get entries from default menu before adding our own
 366         QMenu *const menu = new QMenu(parent);
 367
 368         QMenu* default_menu = Trace::create_view_context_menu(parent, click_pos);
 369         if (default_menu) {
 370                 for (QAction *action : default_menu->actions()) {  // clazy:exclude=range-loop
 371                         menu->addAction(action);
 372                         if (action->parent() == default_menu)
 373                                 action->setParent(menu);
 374                 }
 375                 delete default_menu;
 376
 377                 // Add separator if needed
 378                 if (menu->actions().length() > 0)
 379                         menu->addSeparator();
 380         }
 381
 382         try {
 383                 selected_row_ = &visible_rows_[get_row_at_point(click_pos)];
 384         } catch (out_of_range&) {
 385                 selected_row_ = nullptr;
 386         }
 387
 388         const View *const view = owner_->view();
 389         assert(view);
 390         QPoint pos = view->viewport()->mapFrom(parent, click_pos);
 391
 392         // Default sample range is "from here"
 393         const pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pos.x(), pos.x() + 1);
 394         selected_sample_range_ = make_pair(sample_range.first, numeric_limits<uint64_t>::max());
 395
 396         if (decode_signal_->is_paused()) {
 397                 QAction *const resume =
 398                         new QAction(tr("Resume decoding"), this);
 399                 resume->setIcon(QIcon::fromTheme("media-playback-start",
 400                         QIcon(":/icons/media-playback-start.png")));
 401                 connect(resume, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 402                 menu->addAction(resume);
 403         } else {
 404                 QAction *const pause =
 405                         new QAction(tr("Pause decoding"), this);
 406                 pause->setIcon(QIcon::fromTheme("media-playback-pause",
 407                         QIcon(":/icons/media-playback-pause.png")));
 408                 connect(pause, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 409                 menu->addAction(pause);
 410         }
 411
 412         QAction *const copy_annotation_to_clipboard =
 413                 new QAction(tr("Copy annotation text to clipboard"), this);
 414         copy_annotation_to_clipboard->setIcon(QIcon::fromTheme("edit-paste",
 415                 QIcon(":/icons/edit-paste.svg")));
 416         connect(copy_annotation_to_clipboard, SIGNAL(triggered()), this, SLOT(on_copy_annotation_to_clipboard()));
 417         menu->addAction(copy_annotation_to_clipboard);
 418
 419         menu->addSeparator();
 420
 421         QAction *const export_all_rows =
 422                 new QAction(tr("Export all annotations"), this);
 423         export_all_rows->setIcon(QIcon::fromTheme("document-save-as",
 424                 QIcon(":/icons/document-save-as.png")));
 425         connect(export_all_rows, SIGNAL(triggered()), this, SLOT(on_export_all_rows()));
 426         menu->addAction(export_all_rows);
 427
 428         QAction *const export_row =
 429                 new QAction(tr("Export all annotations for this row"), this);
 430         export_row->setIcon(QIcon::fromTheme("document-save-as",
 431                 QIcon(":/icons/document-save-as.png")));
 432         connect(export_row, SIGNAL(triggered()), this, SLOT(on_export_row()));
 433         menu->addAction(export_row);
 434
 435         menu->addSeparator();
 436
 437         QAction *const export_all_rows_from_here =
 438                 new QAction(tr("Export all annotations, starting here"), this);
 439         export_all_rows_from_here->setIcon(QIcon::fromTheme("document-save-as",
 440                 QIcon(":/icons/document-save-as.png")));
 441         connect(export_all_rows_from_here, SIGNAL(triggered()), this, SLOT(on_export_all_rows_from_here()));
 442         menu->addAction(export_all_rows_from_here);
 443
 444         QAction *const export_row_from_here =
 445                 new QAction(tr("Export annotations for this row, starting here"), this);
 446         export_row_from_here->setIcon(QIcon::fromTheme("document-save-as",
 447                 QIcon(":/icons/document-save-as.png")));
 448         connect(export_row_from_here, SIGNAL(triggered()), this, SLOT(on_export_row_from_here()));
 449         menu->addAction(export_row_from_here);
 450
 451         menu->addSeparator();
 452
 453         QAction *const export_all_rows_with_cursor =
 454                 new QAction(tr("Export all annotations within cursor range"), this);
 455         export_all_rows_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 456                 QIcon(":/icons/document-save-as.png")));
 457         connect(export_all_rows_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_all_rows_with_cursor()));
 458         menu->addAction(export_all_rows_with_cursor);
 459
 460         QAction *const export_row_with_cursor =
 461                 new QAction(tr("Export annotations for this row within cursor range"), this);
 462         export_row_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 463                 QIcon(":/icons/document-save-as.png")));
 464         connect(export_row_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_row_with_cursor()));
 465         menu->addAction(export_row_with_cursor);
 466
 467         if (!view->cursors()->enabled()) {
 468                 export_all_rows_with_cursor->setEnabled(false);
 469                 export_row_with_cursor->setEnabled(false);
 470         }
 471
 472         return menu;
 473 }
 474
 475 void DecodeTrace::draw_annotations(vector<pv::data::decode::Annotation> annotations,
 476                 QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 477                 QColor row_color, int row_title_width)
 478 {
 479         using namespace pv::data::decode;
 480
 481         Annotation::Class block_class = 0;
 482         bool block_class_uniform = true;
 483         qreal block_start = 0;
 484         int block_ann_count = 0;
 485
 486         const Annotation *prev_ann;
 487         qreal prev_end = INT_MIN;
 488
 489         qreal a_end;
 490
 491         double samples_per_pixel, pixels_offset;
 492         tie(pixels_offset, samples_per_pixel) =
 493                 get_pixels_offset_samples_per_pixel();
 494
 495         // Sort the annotations by start sample so that decoders
 496         // can't confuse us by creating annotations out of order
 497         stable_sort(annotations.begin(), annotations.end(),
 498                 [](const Annotation &a, const Annotation &b) {
 499                         return a.start_sample() < b.start_sample(); });
 500
 501         // Gather all annotations that form a visual "block" and draw them as such
 502         for (const Annotation &a : annotations) {
 503
 504                 const qreal abs_a_start = a.start_sample() / samples_per_pixel;
 505                 const qreal abs_a_end   = a.end_sample() / samples_per_pixel;
 506
 507                 const qreal a_start = abs_a_start - pixels_offset;
 508                 a_end = abs_a_end - pixels_offset;
 509
 510                 const qreal a_width = a_end - a_start;
 511                 const qreal delta = a_end - prev_end;
 512
 513                 bool a_is_separate = false;
 514
 515                 // Annotation wider than the threshold for a useful label width?
 516                 if (a_width >= min_useful_label_width_) {
 517                         for (const QString &ann_text : a.annotations()) {
 518                                 const qreal w = p.boundingRect(QRectF(), 0, ann_text).width();
 519                                 // Annotation wide enough to fit a label? Don't put it in a block then
 520                                 if (w <= a_width) {
 521                                         a_is_separate = true;
 522                                         break;
 523                                 }
 524                         }
 525                 }
 526
 527                 // Were the previous and this annotation more than a pixel apart?
 528                 if ((abs(delta) > 1) || a_is_separate) {
 529                         // Block was broken, draw annotations that form the current block
 530                         if (block_ann_count == 1)
 531                                 draw_annotation(*prev_ann, p, h, pp, y, row_color,
 532                                         row_title_width);
 533                         else if (block_ann_count > 0)
 534                                 draw_annotation_block(block_start, prev_end, block_class,
 535                                         block_class_uniform, p, h, y, row_color);
 536
 537                         block_ann_count = 0;
 538                 }
 539
 540                 if (a_is_separate) {
 541                         draw_annotation(a, p, h, pp, y, row_color, row_title_width);
 542                         // Next annotation must start a new block. delta will be > 1
 543                         // because we set prev_end to INT_MIN but that's okay since
 544                         // block_ann_count will be 0 and nothing will be drawn
 545                         prev_end = INT_MIN;
 546                         block_ann_count = 0;
 547                 } else {
 548                         prev_end = a_end;
 549                         prev_ann = &a;
 550
 551                         if (block_ann_count == 0) {
 552                                 block_start = a_start;
 553                                 block_class = a.ann_class();
 554                                 block_class_uniform = true;
 555                         } else
 556                                 if (a.ann_class() != block_class)
 557                                         block_class_uniform = false;
 558
 559                         block_ann_count++;
 560                 }
 561         }
 562
 563         if (block_ann_count == 1)
 564                 draw_annotation(*prev_ann, p, h, pp, y, row_color, row_title_width);
 565         else if (block_ann_count > 0)
 566                 draw_annotation_block(block_start, prev_end, block_class,
 567                         block_class_uniform, p, h, y, row_color);
 568 }
 569
 570 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a,
 571         QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 572         QColor row_color, int row_title_width) const
 573 {
 574         double samples_per_pixel, pixels_offset;
 575         tie(pixels_offset, samples_per_pixel) =
 576                 get_pixels_offset_samples_per_pixel();
 577
 578         const double start = a.start_sample() / samples_per_pixel -
 579                 pixels_offset;
 580         const double end = a.end_sample() / samples_per_pixel - pixels_offset;
 581
 582         QColor color = get_annotation_color(row_color, a.ann_class());
 583         p.setPen(color.darker());
 584         p.setBrush(color);
 585
 586         if (start > pp.right() + DrawPadding || end < pp.left() - DrawPadding)
 587                 return;
 588
 589         if (a.start_sample() == a.end_sample())
 590                 draw_instant(a, p, h, start, y);
 591         else
 592                 draw_range(a, p, h, start, end, y, pp, row_title_width);
 593 }
 594
 595 void DecodeTrace::draw_annotation_block(qreal start, qreal end,
 596         Annotation::Class ann_class, bool use_ann_format, QPainter &p, int h,
 597         int y, QColor row_color) const
 598 {
 599         const double top = y + .5 - h / 2;
 600         const double bottom = y + .5 + h / 2;
 601
 602         const QRectF rect(start, top, end - start, bottom - top);
 603         const int r = h / 4;
 604
 605         p.setPen(QPen(Qt::NoPen));
 606         p.setBrush(Qt::white);
 607         p.drawRoundedRect(rect, r, r);
 608
 609         // If all annotations in this block are of the same type, we can use the
 610         // one format that all of these annotations have. Otherwise, we should use
 611         // a neutral color (i.e. gray)
 612         if (use_ann_format) {
 613                 const QColor color = get_annotation_color(row_color, ann_class);
 614                 p.setPen(color.darker());
 615                 p.setBrush(QBrush(color, Qt::Dense4Pattern));
 616         } else {
 617                 p.setPen(Qt::gray);
 618                 p.setBrush(QBrush(Qt::gray, Qt::Dense4Pattern));
 619         }
 620
 621         p.drawRoundedRect(rect, r, r);
 622 }
 623
 624 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
 625         int h, qreal x, int y) const
 626 {
 627         const QString text = a.annotations().empty() ?
 628                 QString() : a.annotations().back();
 629         const qreal w = min((qreal)p.boundingRect(QRectF(), 0, text).width(),
 630                 0.0) + h;
 631         const QRectF rect(x - w / 2, y - h / 2, w, h);
 632
 633         p.drawRoundedRect(rect, h / 2, h / 2);
 634
 635         p.setPen(Qt::black);
 636         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 637 }
 638
 639 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
 640         int h, qreal start, qreal end, int y, const ViewItemPaintParams &pp,
 641         int row_title_width) const
 642 {
 643         const qreal top = y + .5 - h / 2;
 644         const qreal bottom = y + .5 + h / 2;
 645         const vector<QString> annotations = a.annotations();
 646
 647         // If the two ends are within 1 pixel, draw a vertical line
 648         if (start + 1.0 > end) {
 649                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 650                 return;
 651         }
 652
 653         const qreal cap_width = min((end - start) / 4, EndCapWidth);
 654
 655         QPointF pts[] = {
 656                 QPointF(start, y + .5f),
 657                 QPointF(start + cap_width, top),
 658                 QPointF(end - cap_width, top),
 659                 QPointF(end, y + .5f),
 660                 QPointF(end - cap_width, bottom),
 661                 QPointF(start + cap_width, bottom)
 662         };
 663
 664         p.drawConvexPolygon(pts, countof(pts));
 665
 666         if (annotations.empty())
 667                 return;
 668
 669         const int ann_start = start + cap_width;
 670         const int ann_end = end - cap_width;
 671
 672         const int real_start = max(ann_start, pp.left() + row_title_width);
 673         const int real_end = min(ann_end, pp.right());
 674         const int real_width = real_end - real_start;
 675
 676         QRectF rect(real_start, y - h / 2, real_width, h);
 677         if (rect.width() <= 4)
 678                 return;
 679
 680         p.setPen(Qt::black);
 681
 682         // Try to find an annotation that will fit
 683         QString best_annotation;
 684         int best_width = 0;
 685
 686         for (const QString &a : annotations) {
 687                 const int w = p.boundingRect(QRectF(), 0, a).width();
 688                 if (w <= rect.width() && w > best_width)
 689                         best_annotation = a, best_width = w;
 690         }
 691
 692         if (best_annotation.isEmpty())
 693                 best_annotation = annotations.back();
 694
 695         // If not ellide the last in the list
 696         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 697                 best_annotation, Qt::ElideRight, rect.width()));
 698 }
 699
 700 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 701         const ViewItemPaintParams &pp)
 702 {
 703         const int y = get_visual_y();
 704
 705         double samples_per_pixel, pixels_offset;
 706         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 707
 708         p.setPen(ErrorBgColor.darker());
 709         p.setBrush(ErrorBgColor);
 710
 711         const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
 712
 713         const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
 714         const qreal r = text_rect.height() / 4;
 715
 716         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
 717
 718         p.setPen(Qt::black);
 719         p.drawText(text_rect, message);
 720 }
 721
 722 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, int right) const
 723 {
 724         using namespace pv::data;
 725         using pv::data::decode::Decoder;
 726
 727         double samples_per_pixel, pixels_offset;
 728
 729         const int64_t sample_count = decode_signal_->get_working_sample_count(current_segment_);
 730         if (sample_count == 0)
 731                 return;
 732
 733         const int64_t samples_decoded = decode_signal_->get_decoded_sample_count(current_segment_, true);
 734         if (sample_count == samples_decoded)
 735                 return;
 736
 737         const int y = get_visual_y();
 738
 739         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 740
 741         const double start = max(samples_decoded /
 742                 samples_per_pixel - pixels_offset, left - 1.0);
 743         const double end = min(sample_count / samples_per_pixel -
 744                 pixels_offset, right + 1.0);
 745         const QRectF no_decode_rect(start, y - (h / 2) - 0.5, end - start, h);
 746
 747         p.setPen(QPen(Qt::NoPen));
 748         p.setBrush(Qt::white);
 749         p.drawRect(no_decode_rect);
 750
 751         p.setPen(NoDecodeColor);
 752         p.setBrush(QBrush(NoDecodeColor, Qt::Dense6Pattern));
 753         p.drawRect(no_decode_rect);
 754 }
 755
 756 pair<double, double> DecodeTrace::get_pixels_offset_samples_per_pixel() const
 757 {
 758         assert(owner_);
 759
 760         const View *view = owner_->view();
 761         assert(view);
 762
 763         const double scale = view->scale();
 764         assert(scale > 0);
 765
 766         const double pixels_offset =
 767                 ((view->offset() - decode_signal_->start_time()) / scale).convert_to<double>();
 768
 769         double samplerate = decode_signal_->samplerate();
 770
 771         // Show sample rate as 1Hz when it is unknown
 772         if (samplerate == 0.0)
 773                 samplerate = 1.0;
 774
 775         return make_pair(pixels_offset, samplerate * scale);
 776 }
 777
 778 pair<uint64_t, uint64_t> DecodeTrace::get_view_sample_range(
 779         int x_start, int x_end) const
 780 {
 781         double samples_per_pixel, pixels_offset;
 782         tie(pixels_offset, samples_per_pixel) =
 783                 get_pixels_offset_samples_per_pixel();
 784
 785         const uint64_t start = (uint64_t)max(
 786                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
 787         const uint64_t end = (uint64_t)max(
 788                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
 789
 790         return make_pair(start, end);
 791 }
 792
 793 QColor DecodeTrace::get_row_color(int row_index) const
 794 {
 795         // For each row color, use the base color hue and add an offset that's
 796         // not a dividend of 360
 797
 798         QColor color;
 799         const int h = (base_->color().toHsv().hue() + 20 * row_index) % 360;
 800         const int s = DECODETRACE_COLOR_SATURATION;
 801         const int v = DECODETRACE_COLOR_VALUE;
 802         color.setHsl(h, s, v);
 803
 804         return color;
 805 }
 806
 807 QColor DecodeTrace::get_annotation_color(QColor row_color, int annotation_index) const
 808 {
 809         // For each row color, use the base color hue and add an offset that's
 810         // not a dividend of 360 and not a multiple of the row offset
 811
 812         QColor color(row_color);
 813         const int h = (color.toHsv().hue() + 55 * annotation_index) % 360;
 814         const int s = DECODETRACE_COLOR_SATURATION;
 815         const int v = DECODETRACE_COLOR_VALUE;
 816         color.setHsl(h, s, v);
 817
 818         return color;
 819 }
 820
 821 int DecodeTrace::get_row_at_point(const QPoint &point)
 822 {
 823         if (!row_height_)
 824                 return -1;
 825
 826         const int y = (point.y() - get_visual_y() + row_height_ / 2);
 827
 828         /* Integer divison of (x-1)/x would yield 0, so we check for this. */
 829         if (y < 0)
 830                 return -1;
 831
 832         const int row = y / row_height_;
 833
 834         if (row >= (int)visible_rows_.size())
 835                 return -1;
 836
 837         return row;
 838 }
 839
 840 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
 841 {
 842         using namespace pv::data::decode;
 843
 844         if (!enabled())
 845                 return QString();
 846
 847         const pair<uint64_t, uint64_t> sample_range =
 848                 get_view_sample_range(point.x(), point.x() + 1);
 849         const int row = get_row_at_point(point);
 850         if (row < 0)
 851                 return QString();
 852
 853         vector<Annotation> annotations;
 854
 855         decode_signal_->get_annotation_subset(annotations, visible_rows_[row],
 856                 current_segment_, sample_range.first, sample_range.second);
 857
 858         return (annotations.empty()) ?
 859                 QString() : annotations[0].annotations().front();
 860 }
 861
 862 void DecodeTrace::hover_point_changed(const QPoint &hp)
 863 {
 864         Trace::hover_point_changed(hp);
 865
 866         assert(owner_);
 867
 868         const View *const view = owner_->view();
 869         assert(view);
 870
 871         if (hp.x() == 0) {
 872                 QToolTip::hideText();
 873                 return;
 874         }
 875
 876         QString ann = get_annotation_at_point(hp);
 877
 878         if (!row_height_ || ann.isEmpty()) {
 879                 QToolTip::hideText();
 880                 return;
 881         }
 882
 883         const int hover_row = get_row_at_point(hp);
 884
 885         QFontMetrics m(QToolTip::font());
 886         const QRect text_size = m.boundingRect(QRect(), 0, ann);
 887
 888         // This is OS-specific and unfortunately we can't query it, so
 889         // use an approximation to at least try to minimize the error.
 890         const int padding = 8;
 891
 892         // Make sure the tool tip doesn't overlap with the mouse cursor.
 893         // If it did, the tool tip would constantly hide and re-appear.
 894         // We also push it up by one row so that it appears above the
 895         // decode trace, not below.
 896         QPoint p = hp;
 897         p.setX(hp.x() - (text_size.width() / 2) - padding);
 898
 899         p.setY(get_visual_y() - (row_height_ / 2) +
 900                 (hover_row * row_height_) -
 901                 row_height_ - text_size.height() - padding);
 902
 903         QToolTip::showText(view->viewport()->mapToGlobal(p), ann);
 904 }
 905
 906 void DecodeTrace::create_decoder_form(int index,
 907         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
 908         QFormLayout *form)
 909 {
 910         GlobalSettings settings;
 911
 912         assert(dec);
 913         const srd_decoder *const decoder = dec->decoder();
 914         assert(decoder);
 915
 916         const bool decoder_deletable = index > 0;
 917
 918         pv::widgets::DecoderGroupBox *const group =
 919                 new pv::widgets::DecoderGroupBox(
 920                         QString::fromUtf8(decoder->name),
 921                         tr("%1:\n%2").arg(QString::fromUtf8(decoder->longname),
 922                                 QString::fromUtf8(decoder->desc)),
 923                         nullptr, decoder_deletable);
 924         group->set_decoder_visible(dec->shown());
 925
 926         if (decoder_deletable) {
 927                 delete_mapper_.setMapping(group, index);
 928                 connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
 929         }
 930
 931         show_hide_mapper_.setMapping(group, index);
 932         connect(group, SIGNAL(show_hide_decoder()),
 933                 &show_hide_mapper_, SLOT(map()));
 934
 935         QFormLayout *const decoder_form = new QFormLayout;
 936         group->add_layout(decoder_form);
 937
 938         const vector<DecodeChannel> channels = decode_signal_->get_channels();
 939
 940         // Add the channels
 941         for (const DecodeChannel& ch : channels) {
 942                 // Ignore channels not part of the decoder we create the form for
 943                 if (ch.decoder_ != dec)
 944                         continue;
 945
 946                 QComboBox *const combo = create_channel_selector(parent, &ch);
 947                 QComboBox *const combo_init_state = create_channel_selector_init_state(parent, &ch);
 948
 949                 channel_id_map_[combo] = ch.id;
 950                 init_state_map_[combo_init_state] = ch.id;
 951
 952                 connect(combo, SIGNAL(currentIndexChanged(int)),
 953                         this, SLOT(on_channel_selected(int)));
 954                 connect(combo_init_state, SIGNAL(currentIndexChanged(int)),
 955                         this, SLOT(on_init_state_changed(int)));
 956
 957                 QHBoxLayout *const hlayout = new QHBoxLayout;
 958                 hlayout->addWidget(combo);
 959                 hlayout->addWidget(combo_init_state);
 960
 961                 if (!settings.value(GlobalSettings::Key_Dec_InitialStateConfigurable).toBool())
 962                         combo_init_state->hide();
 963
 964                 const QString required_flag = ch.is_optional ? QString() : QString("*");
 965                 decoder_form->addRow(tr("<b>%1</b> (%2) %3")
 966                         .arg(ch.name, ch.desc, required_flag), hlayout);
 967         }
 968
 969         // Add the options
 970         shared_ptr<binding::Decoder> binding(
 971                 new binding::Decoder(decode_signal_, dec));
 972         binding->add_properties_to_form(decoder_form, true);
 973
 974         bindings_.push_back(binding);
 975
 976         form->addRow(group);
 977         decoder_forms_.push_back(group);
 978 }
 979
 980 QComboBox* DecodeTrace::create_channel_selector(QWidget *parent, const DecodeChannel *ch)
 981 {
 982         const auto sigs(session_.signalbases());
 983
 984         // Sort signals in natural order
 985         vector< shared_ptr<data::SignalBase> > sig_list(sigs.begin(), sigs.end());
 986         sort(sig_list.begin(), sig_list.end(),
 987                 [](const shared_ptr<data::SignalBase> &a,
 988                 const shared_ptr<data::SignalBase> &b) {
 989                         return strnatcasecmp(a->name().toStdString(),
 990                                 b->name().toStdString()) < 0; });
 991
 992         QComboBox *selector = new QComboBox(parent);
 993
 994         selector->addItem("-", qVariantFromValue((void*)nullptr));
 995
 996         if (!ch->assigned_signal)
 997                 selector->setCurrentIndex(0);
 998
 999         for (const shared_ptr<data::SignalBase> &b : sig_list) {
1000                 assert(b);
1001                 if (b->logic_data() && b->enabled()) {
1002                         selector->addItem(b->name(),
1003                                 qVariantFromValue((void*)b.get()));
1004
1005                         if (ch->assigned_signal == b.get())
1006                                 selector->setCurrentIndex(selector->count() - 1);
1007                 }
1008         }
1009
1010         return selector;
1011 }
1012
1013 QComboBox* DecodeTrace::create_channel_selector_init_state(QWidget *parent,
1014         const DecodeChannel *ch)
1015 {
1016         QComboBox *selector = new QComboBox(parent);
1017
1018         selector->addItem("0", qVariantFromValue((int)SRD_INITIAL_PIN_LOW));
1019         selector->addItem("1", qVariantFromValue((int)SRD_INITIAL_PIN_HIGH));
1020         selector->addItem("X", qVariantFromValue((int)SRD_INITIAL_PIN_SAME_AS_SAMPLE0));
1021
1022         selector->setCurrentIndex(ch->initial_pin_state);
1023
1024         selector->setToolTip("Initial (assumed) pin value before the first sample");
1025
1026         return selector;
1027 }
1028
1029 void DecodeTrace::export_annotations(vector<Annotation> *annotations) const
1030 {
1031         using namespace pv::data::decode;
1032
1033         GlobalSettings settings;
1034         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
1035
1036         const QString file_name = QFileDialog::getSaveFileName(
1037                 owner_->view(), tr("Export annotations"), dir, tr("Text Files (*.txt);;All Files (*)"));
1038
1039         if (file_name.isEmpty())
1040                 return;
1041
1042         QString format = settings.value(GlobalSettings::Key_Dec_ExportFormat).toString();
1043         const QString quote = format.contains("%q") ? "\"" : "";
1044         format = format.remove("%q");
1045
1046         QFile file(file_name);
1047         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
1048                 QTextStream out_stream(&file);
1049
1050                 for (Annotation &ann : *annotations) {
1051                         const QString sample_range = QString("%1-%2") \
1052                                 .arg(QString::number(ann.start_sample()), QString::number(ann.end_sample()));
1053
1054                         const QString class_name = quote + ann.row()->class_name() + quote;
1055
1056                         QString all_ann_text;
1057                         for (const QString &s : ann.annotations())
1058                                 all_ann_text = all_ann_text + quote + s + quote + ",";
1059                         all_ann_text.chop(1);
1060
1061                         const QString first_ann_text = quote + ann.annotations().front() + quote;
1062
1063                         QString out_text = format;
1064                         out_text = out_text.replace("%s", sample_range);
1065                         out_text = out_text.replace("%d",
1066                                 quote + QString::fromUtf8(ann.row()->decoder()->name) + quote);
1067                         out_text = out_text.replace("%c", class_name);
1068                         out_text = out_text.replace("%1", first_ann_text);
1069                         out_text = out_text.replace("%a", all_ann_text);
1070                         out_stream << out_text << '\n';
1071                 }
1072
1073                 if (out_stream.status() == QTextStream::Ok)
1074                         return;
1075         }
1076
1077         QMessageBox msg(owner_->view());
1078         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
1079         msg.setStandardButtons(QMessageBox::Ok);
1080         msg.setIcon(QMessageBox::Warning);
1081         msg.exec();
1082 }
1083
1084 void DecodeTrace::on_setting_changed(const QString &key, const QVariant &value)
1085 {
1086         if (key == GlobalSettings::Key_Dec_AlwaysShowAllRows) {
1087                 visible_rows_.clear();
1088                 max_visible_rows_ = 0;
1089                 always_show_all_rows_ = value.toBool();
1090         }
1091 }
1092
1093 void DecodeTrace::on_new_annotations()
1094 {
1095         if (!delayed_trace_updater_.isActive())
1096                 delayed_trace_updater_.start();
1097 }
1098
1099 void DecodeTrace::on_delayed_trace_update()
1100 {
1101         if (owner_)
1102                 owner_->row_item_appearance_changed(false, true);
1103 }
1104
1105 void DecodeTrace::on_decode_reset()
1106 {
1107         visible_rows_.clear();
1108         max_visible_rows_ = 0;
1109
1110         if (owner_)
1111                 owner_->row_item_appearance_changed(false, true);
1112 }
1113
1114 void DecodeTrace::on_decode_finished()
1115 {
1116         if (owner_)
1117                 owner_->row_item_appearance_changed(false, true);
1118 }
1119
1120 void DecodeTrace::on_pause_decode()
1121 {
1122         if (decode_signal_->is_paused())
1123                 decode_signal_->resume_decode();
1124         else
1125                 decode_signal_->pause_decode();
1126 }
1127
1128 void DecodeTrace::delete_pressed()
1129 {
1130         on_delete();
1131 }
1132
1133 void DecodeTrace::on_delete()
1134 {
1135         session_.remove_decode_signal(decode_signal_);
1136 }
1137
1138 void DecodeTrace::on_channel_selected(int)
1139 {
1140         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1141
1142         // Determine signal that was selected
1143         const data::SignalBase *signal =
1144                 (data::SignalBase*)cb->itemData(cb->currentIndex()).value<void*>();
1145
1146         // Determine decode channel ID this combo box is the channel selector for
1147         const uint16_t id = channel_id_map_.at(cb);
1148
1149         decode_signal_->assign_signal(id, signal);
1150 }
1151
1152 void DecodeTrace::on_channels_updated()
1153 {
1154         if (owner_)
1155                 owner_->row_item_appearance_changed(false, true);
1156 }
1157
1158 void DecodeTrace::on_init_state_changed(int)
1159 {
1160         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1161
1162         // Determine inital pin state that was selected
1163         int init_state = cb->itemData(cb->currentIndex()).value<int>();
1164
1165         // Determine decode channel ID this combo box is the channel selector for
1166         const uint16_t id = init_state_map_.at(cb);
1167
1168         decode_signal_->set_initial_pin_state(id, init_state);
1169 }
1170
1171 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
1172 {
1173         decode_signal_->stack_decoder(decoder);
1174
1175         create_popup_form();
1176 }
1177
1178 void DecodeTrace::on_delete_decoder(int index)
1179 {
1180         decode_signal_->remove_decoder(index);
1181
1182         // Force re-calculation of the trace height, see paint_mid()
1183         max_visible_rows_ = 0;
1184         owner_->extents_changed(false, true);
1185
1186         // Update the popup
1187         create_popup_form();
1188 }
1189
1190 void DecodeTrace::on_show_hide_decoder(int index)
1191 {
1192         const bool state = decode_signal_->toggle_decoder_visibility(index);
1193
1194         assert(index < (int)decoder_forms_.size());
1195         decoder_forms_[index]->set_decoder_visible(state);
1196
1197         if (!state) {
1198                 // Force re-calculation of the trace height, see paint_mid()
1199                 max_visible_rows_ = 0;
1200                 owner_->extents_changed(false, true);
1201         }
1202
1203         if (owner_)
1204                 owner_->row_item_appearance_changed(false, true);
1205 }
1206
1207 void DecodeTrace::on_copy_annotation_to_clipboard()
1208 {
1209         using namespace pv::data::decode;
1210
1211         if (!selected_row_)
1212                 return;
1213
1214         vector<Annotation> *annotations = new vector<Annotation>();
1215
1216         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1217                 current_segment_, selected_sample_range_.first, selected_sample_range_.first);
1218
1219         if (annotations->empty())
1220                 return;
1221
1222         QClipboard *clipboard = QApplication::clipboard();
1223         clipboard->setText(annotations->front().annotations().front(), QClipboard::Clipboard);
1224
1225         if (clipboard->supportsSelection())
1226                 clipboard->setText(annotations->front().annotations().front(), QClipboard::Selection);
1227
1228         delete annotations;
1229 }
1230
1231 void DecodeTrace::on_export_row()
1232 {
1233         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1234         on_export_row_from_here();
1235 }
1236
1237 void DecodeTrace::on_export_all_rows()
1238 {
1239         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1240         on_export_all_rows_from_here();
1241 }
1242
1243 void DecodeTrace::on_export_row_with_cursor()
1244 {
1245         const View *view = owner_->view();
1246         assert(view);
1247
1248         if (!view->cursors()->enabled())
1249                 return;
1250
1251         const double samplerate = session_.get_samplerate();
1252
1253         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1254         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1255
1256         const uint64_t start_sample = (uint64_t)max(
1257                 0.0, start_time.convert_to<double>() * samplerate);
1258         const uint64_t end_sample = (uint64_t)max(
1259                 0.0, end_time.convert_to<double>() * samplerate);
1260
1261         // Are both cursors negative and thus were clamped to 0?
1262         if ((start_sample == 0) && (end_sample == 0))
1263                 return;
1264
1265         selected_sample_range_ = make_pair(start_sample, end_sample);
1266         on_export_row_from_here();
1267 }
1268
1269 void DecodeTrace::on_export_all_rows_with_cursor()
1270 {
1271         const View *view = owner_->view();
1272         assert(view);
1273
1274         if (!view->cursors()->enabled())
1275                 return;
1276
1277         const double samplerate = session_.get_samplerate();
1278
1279         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1280         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1281
1282         const uint64_t start_sample = (uint64_t)max(
1283                 0.0, start_time.convert_to<double>() * samplerate);
1284         const uint64_t end_sample = (uint64_t)max(
1285                 0.0, end_time.convert_to<double>() * samplerate);
1286
1287         // Are both cursors negative and thus were clamped to 0?
1288         if ((start_sample == 0) && (end_sample == 0))
1289                 return;
1290
1291         selected_sample_range_ = make_pair(start_sample, end_sample);
1292         on_export_all_rows_from_here();
1293 }
1294
1295 void DecodeTrace::on_export_row_from_here()
1296 {
1297         using namespace pv::data::decode;
1298
1299         if (!selected_row_)
1300                 return;
1301
1302         vector<Annotation> *annotations = new vector<Annotation>();
1303
1304         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1305                 current_segment_, selected_sample_range_.first, selected_sample_range_.second);
1306
1307         if (annotations->empty())
1308                 return;
1309
1310         export_annotations(annotations);
1311         delete annotations;
1312 }
1313
1314 void DecodeTrace::on_export_all_rows_from_here()
1315 {
1316         using namespace pv::data::decode;
1317
1318         vector<Annotation> *annotations = new vector<Annotation>();
1319
1320         decode_signal_->get_annotation_subset(*annotations, current_segment_,
1321                         selected_sample_range_.first, selected_sample_range_.second);
1322
1323         if (!annotations->empty())
1324                 export_annotations(annotations);
1325
1326         delete annotations;
1327 }
1328
1329 } // namespace trace
1330 } // namespace views
1331 } // namespace pv