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();
 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
 216                 // Show row if there are visible annotations or when user wants to see
 217                 // all rows that have annotations somewhere and this one is one of them
 218                 bool row_visible = !annotations.empty() ||
 219                         (always_show_all_rows_ && (decode_signal_->get_annotation_count(row, current_segment_) > 0));
 220
 221                 if (row_visible) {
 222                         draw_annotations(annotations, p, annotation_height, pp, y,
 223                                 get_row_color(row.index()), row_title_width);
 224                         y += row_height_;
 225                         visible_rows_.push_back(row);
 226                 }
 227         }
 228
 229         draw_unresolved_period(p, annotation_height, pp.left(), pp.right());
 230
 231         if ((int)visible_rows_.size() > max_visible_rows_) {
 232                 max_visible_rows_ = (int)visible_rows_.size();
 233
 234                 // Call order is important, otherwise the lazy event handler won't work
 235                 owner_->extents_changed(false, true);
 236                 owner_->row_item_appearance_changed(false, true);
 237         }
 238
 239         const QString err = decode_signal_->error_message();
 240         if (!err.isEmpty())
 241                 draw_error(p, err, pp);
 242 }
 243
 244 void DecodeTrace::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 245 {
 246         assert(row_height_);
 247
 248         for (size_t i = 0; i < visible_rows_.size(); i++) {
 249                 const int y = i * row_height_ + get_visual_y();
 250
 251                 p.setPen(QPen(Qt::NoPen));
 252                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 253
 254                 if (i != 0) {
 255                         const QPointF points[] = {
 256                                 QPointF(pp.left(), y - ArrowSize),
 257                                 QPointF(pp.left() + ArrowSize, y),
 258                                 QPointF(pp.left(), y + ArrowSize)
 259                         };
 260                         p.drawPolygon(points, countof(points));
 261                 }
 262
 263                 const QRect r(pp.left() + ArrowSize * 2, y - row_height_ / 2,
 264                         pp.right() - pp.left(), row_height_);
 265                 const QString h(visible_rows_[i].title());
 266                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
 267                         Qt::TextDontClip;
 268
 269                 // Draw the outline
 270                 p.setPen(QApplication::palette().color(QPalette::Base));
 271                 for (int dx = -1; dx <= 1; dx++)
 272                         for (int dy = -1; dy <= 1; dy++)
 273                                 if (dx != 0 && dy != 0)
 274                                         p.drawText(r.translated(dx, dy), f, h);
 275
 276                 // Draw the text
 277                 p.setPen(QApplication::palette().color(QPalette::WindowText));
 278                 p.drawText(r, f, h);
 279         }
 280
 281         if (show_hover_marker_)
 282                 paint_hover_marker(p);
 283 }
 284
 285 void DecodeTrace::update_stack_button()
 286 {
 287         const vector< shared_ptr<data::decode::Decoder> > &stack = decode_signal_->decoder_stack();
 288
 289         // Only show decoders in the menu that can be stacked onto the last one in the stack
 290         if (!stack.empty()) {
 291                 const srd_decoder* d = stack.back()->decoder();
 292
 293                 if (d->outputs) {
 294                         pv::widgets::DecoderMenu *const decoder_menu =
 295                                 new pv::widgets::DecoderMenu(stack_button_, (const char*)(d->outputs->data));
 296                         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 297                                 this, SLOT(on_stack_decoder(srd_decoder*)));
 298
 299                         decoder_menu->setStyleSheet("QMenu { menu-scrollable: 1; }");
 300
 301                         stack_button_->setMenu(decoder_menu);
 302                         stack_button_->show();
 303                         return;
 304                 }
 305         }
 306
 307         // No decoders available for stacking
 308         stack_button_->setMenu(nullptr);
 309         stack_button_->hide();
 310 }
 311
 312 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 313 {
 314         using pv::data::decode::Decoder;
 315
 316         assert(form);
 317
 318         // Add the standard options
 319         Trace::populate_popup_form(parent, form);
 320
 321         // Add the decoder options
 322         bindings_.clear();
 323         channel_id_map_.clear();
 324         init_state_map_.clear();
 325         decoder_forms_.clear();
 326
 327         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
 328
 329         if (stack.empty()) {
 330                 QLabel *const l = new QLabel(
 331                         tr("<p><i>No decoders in the stack</i></p>"));
 332                 l->setAlignment(Qt::AlignCenter);
 333                 form->addRow(l);
 334         } else {
 335                 auto iter = stack.cbegin();
 336                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 337                         shared_ptr<Decoder> dec(*iter);
 338                         create_decoder_form(i, dec, parent, form);
 339                 }
 340
 341                 form->addRow(new QLabel(
 342                         tr("<i>* Required channels</i>"), parent));
 343         }
 344
 345         // Add stacking button
 346         stack_button_ = new QPushButton(tr("Stack Decoder"), parent);
 347         stack_button_->setToolTip(tr("Stack a higher-level decoder on top of this one"));
 348         update_stack_button();
 349
 350         QHBoxLayout *stack_button_box = new QHBoxLayout;
 351         stack_button_box->addWidget(stack_button_, 0, Qt::AlignRight);
 352         form->addRow(stack_button_box);
 353 }
 354
 355 QMenu* DecodeTrace::create_header_context_menu(QWidget *parent)
 356 {
 357         QMenu *const menu = Trace::create_header_context_menu(parent);
 358
 359         menu->addSeparator();
 360
 361         QAction *const del = new QAction(tr("Delete"), this);
 362         del->setShortcuts(QKeySequence::Delete);
 363         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 364         menu->addAction(del);
 365
 366         return menu;
 367 }
 368
 369 QMenu* DecodeTrace::create_view_context_menu(QWidget *parent, QPoint &click_pos)
 370 {
 371         // Get entries from default menu before adding our own
 372         QMenu *const menu = new QMenu(parent);
 373
 374         QMenu* default_menu = Trace::create_view_context_menu(parent, click_pos);
 375         if (default_menu) {
 376                 for (QAction *action : default_menu->actions()) {  // clazy:exclude=range-loop
 377                         menu->addAction(action);
 378                         if (action->parent() == default_menu)
 379                                 action->setParent(menu);
 380                 }
 381                 delete default_menu;
 382
 383                 // Add separator if needed
 384                 if (menu->actions().length() > 0)
 385                         menu->addSeparator();
 386         }
 387
 388         try {
 389                 selected_row_ = &visible_rows_[get_row_at_point(click_pos)];
 390         } catch (out_of_range&) {
 391                 selected_row_ = nullptr;
 392         }
 393
 394         const View *const view = owner_->view();
 395         assert(view);
 396         QPoint pos = view->viewport()->mapFrom(parent, click_pos);
 397
 398         // Default sample range is "from here"
 399         const pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pos.x(), pos.x() + 1);
 400         selected_sample_range_ = make_pair(sample_range.first, numeric_limits<uint64_t>::max());
 401
 402         if (decode_signal_->is_paused()) {
 403                 QAction *const resume =
 404                         new QAction(tr("Resume decoding"), this);
 405                 resume->setIcon(QIcon::fromTheme("media-playback-start",
 406                         QIcon(":/icons/media-playback-start.png")));
 407                 connect(resume, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 408                 menu->addAction(resume);
 409         } else {
 410                 QAction *const pause =
 411                         new QAction(tr("Pause decoding"), this);
 412                 pause->setIcon(QIcon::fromTheme("media-playback-pause",
 413                         QIcon(":/icons/media-playback-pause.png")));
 414                 connect(pause, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 415                 menu->addAction(pause);
 416         }
 417
 418         QAction *const copy_annotation_to_clipboard =
 419                 new QAction(tr("Copy annotation text to clipboard"), this);
 420         copy_annotation_to_clipboard->setIcon(QIcon::fromTheme("edit-paste",
 421                 QIcon(":/icons/edit-paste.svg")));
 422         connect(copy_annotation_to_clipboard, SIGNAL(triggered()), this, SLOT(on_copy_annotation_to_clipboard()));
 423         menu->addAction(copy_annotation_to_clipboard);
 424
 425         menu->addSeparator();
 426
 427         QAction *const export_all_rows =
 428                 new QAction(tr("Export all annotations"), this);
 429         export_all_rows->setIcon(QIcon::fromTheme("document-save-as",
 430                 QIcon(":/icons/document-save-as.png")));
 431         connect(export_all_rows, SIGNAL(triggered()), this, SLOT(on_export_all_rows()));
 432         menu->addAction(export_all_rows);
 433
 434         QAction *const export_row =
 435                 new QAction(tr("Export all annotations for this row"), this);
 436         export_row->setIcon(QIcon::fromTheme("document-save-as",
 437                 QIcon(":/icons/document-save-as.png")));
 438         connect(export_row, SIGNAL(triggered()), this, SLOT(on_export_row()));
 439         menu->addAction(export_row);
 440
 441         menu->addSeparator();
 442
 443         QAction *const export_all_rows_from_here =
 444                 new QAction(tr("Export all annotations, starting here"), this);
 445         export_all_rows_from_here->setIcon(QIcon::fromTheme("document-save-as",
 446                 QIcon(":/icons/document-save-as.png")));
 447         connect(export_all_rows_from_here, SIGNAL(triggered()), this, SLOT(on_export_all_rows_from_here()));
 448         menu->addAction(export_all_rows_from_here);
 449
 450         QAction *const export_row_from_here =
 451                 new QAction(tr("Export annotations for this row, starting here"), this);
 452         export_row_from_here->setIcon(QIcon::fromTheme("document-save-as",
 453                 QIcon(":/icons/document-save-as.png")));
 454         connect(export_row_from_here, SIGNAL(triggered()), this, SLOT(on_export_row_from_here()));
 455         menu->addAction(export_row_from_here);
 456
 457         menu->addSeparator();
 458
 459         QAction *const export_all_rows_with_cursor =
 460                 new QAction(tr("Export all annotations within cursor range"), this);
 461         export_all_rows_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 462                 QIcon(":/icons/document-save-as.png")));
 463         connect(export_all_rows_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_all_rows_with_cursor()));
 464         menu->addAction(export_all_rows_with_cursor);
 465
 466         QAction *const export_row_with_cursor =
 467                 new QAction(tr("Export annotations for this row within cursor range"), this);
 468         export_row_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 469                 QIcon(":/icons/document-save-as.png")));
 470         connect(export_row_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_row_with_cursor()));
 471         menu->addAction(export_row_with_cursor);
 472
 473         if (!view->cursors()->enabled()) {
 474                 export_all_rows_with_cursor->setEnabled(false);
 475                 export_row_with_cursor->setEnabled(false);
 476         }
 477
 478         return menu;
 479 }
 480
 481 void DecodeTrace::draw_annotations(vector<pv::data::decode::Annotation> annotations,
 482                 QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 483                 QColor row_color, int row_title_width)
 484 {
 485         using namespace pv::data::decode;
 486
 487         Annotation::Class block_class = 0;
 488         bool block_class_uniform = true;
 489         qreal block_start = 0;
 490         int block_ann_count = 0;
 491
 492         const Annotation *prev_ann;
 493         qreal prev_end = INT_MIN;
 494
 495         qreal a_end;
 496
 497         double samples_per_pixel, pixels_offset;
 498         tie(pixels_offset, samples_per_pixel) =
 499                 get_pixels_offset_samples_per_pixel();
 500
 501         // Sort the annotations by start sample so that decoders
 502         // can't confuse us by creating annotations out of order
 503         stable_sort(annotations.begin(), annotations.end(),
 504                 [](const Annotation &a, const Annotation &b) {
 505                         return a.start_sample() < b.start_sample(); });
 506
 507         // Gather all annotations that form a visual "block" and draw them as such
 508         for (const Annotation &a : annotations) {
 509
 510                 const qreal abs_a_start = a.start_sample() / samples_per_pixel;
 511                 const qreal abs_a_end   = a.end_sample() / samples_per_pixel;
 512
 513                 const qreal a_start = abs_a_start - pixels_offset;
 514                 a_end = abs_a_end - pixels_offset;
 515
 516                 const qreal a_width = a_end - a_start;
 517                 const qreal delta = a_end - prev_end;
 518
 519                 bool a_is_separate = false;
 520
 521                 // Annotation wider than the threshold for a useful label width?
 522                 if (a_width >= min_useful_label_width_) {
 523                         for (const QString &ann_text : a.annotations()) {
 524                                 const qreal w = p.boundingRect(QRectF(), 0, ann_text).width();
 525                                 // Annotation wide enough to fit a label? Don't put it in a block then
 526                                 if (w <= a_width) {
 527                                         a_is_separate = true;
 528                                         break;
 529                                 }
 530                         }
 531                 }
 532
 533                 // Were the previous and this annotation more than a pixel apart?
 534                 if ((abs(delta) > 1) || a_is_separate) {
 535                         // Block was broken, draw annotations that form the current block
 536                         if (block_ann_count == 1)
 537                                 draw_annotation(*prev_ann, p, h, pp, y, row_color,
 538                                         row_title_width);
 539                         else if (block_ann_count > 0)
 540                                 draw_annotation_block(block_start, prev_end, block_class,
 541                                         block_class_uniform, p, h, y, row_color);
 542
 543                         block_ann_count = 0;
 544                 }
 545
 546                 if (a_is_separate) {
 547                         draw_annotation(a, p, h, pp, y, row_color, row_title_width);
 548                         // Next annotation must start a new block. delta will be > 1
 549                         // because we set prev_end to INT_MIN but that's okay since
 550                         // block_ann_count will be 0 and nothing will be drawn
 551                         prev_end = INT_MIN;
 552                         block_ann_count = 0;
 553                 } else {
 554                         prev_end = a_end;
 555                         prev_ann = &a;
 556
 557                         if (block_ann_count == 0) {
 558                                 block_start = a_start;
 559                                 block_class = a.ann_class();
 560                                 block_class_uniform = true;
 561                         } else
 562                                 if (a.ann_class() != block_class)
 563                                         block_class_uniform = false;
 564
 565                         block_ann_count++;
 566                 }
 567         }
 568
 569         if (block_ann_count == 1)
 570                 draw_annotation(*prev_ann, p, h, pp, y, row_color, row_title_width);
 571         else if (block_ann_count > 0)
 572                 draw_annotation_block(block_start, prev_end, block_class,
 573                         block_class_uniform, p, h, y, row_color);
 574 }
 575
 576 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a,
 577         QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 578         QColor row_color, int row_title_width) const
 579 {
 580         double samples_per_pixel, pixels_offset;
 581         tie(pixels_offset, samples_per_pixel) =
 582                 get_pixels_offset_samples_per_pixel();
 583
 584         const double start = a.start_sample() / samples_per_pixel -
 585                 pixels_offset;
 586         const double end = a.end_sample() / samples_per_pixel - pixels_offset;
 587
 588         QColor color = get_annotation_color(row_color, a.ann_class());
 589         p.setPen(color.darker());
 590         p.setBrush(color);
 591
 592         if (start > pp.right() + DrawPadding || end < pp.left() - DrawPadding)
 593                 return;
 594
 595         if (a.start_sample() == a.end_sample())
 596                 draw_instant(a, p, h, start, y);
 597         else
 598                 draw_range(a, p, h, start, end, y, pp, row_title_width);
 599 }
 600
 601 void DecodeTrace::draw_annotation_block(qreal start, qreal end,
 602         Annotation::Class ann_class, bool use_ann_format, QPainter &p, int h,
 603         int y, QColor row_color) const
 604 {
 605         const double top = y + .5 - h / 2;
 606         const double bottom = y + .5 + h / 2;
 607
 608         const QRectF rect(start, top, end - start, bottom - top);
 609         const int r = h / 4;
 610
 611         p.setPen(QPen(Qt::NoPen));
 612         p.setBrush(Qt::white);
 613         p.drawRoundedRect(rect, r, r);
 614
 615         // If all annotations in this block are of the same type, we can use the
 616         // one format that all of these annotations have. Otherwise, we should use
 617         // a neutral color (i.e. gray)
 618         if (use_ann_format) {
 619                 const QColor color = get_annotation_color(row_color, ann_class);
 620                 p.setPen(color.darker());
 621                 p.setBrush(QBrush(color, Qt::Dense4Pattern));
 622         } else {
 623                 p.setPen(Qt::gray);
 624                 p.setBrush(QBrush(Qt::gray, Qt::Dense4Pattern));
 625         }
 626
 627         p.drawRoundedRect(rect, r, r);
 628 }
 629
 630 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
 631         int h, qreal x, int y) const
 632 {
 633         const QString text = a.annotations().empty() ?
 634                 QString() : a.annotations().back();
 635         const qreal w = min((qreal)p.boundingRect(QRectF(), 0, text).width(),
 636                 0.0) + h;
 637         const QRectF rect(x - w / 2, y - h / 2, w, h);
 638
 639         p.drawRoundedRect(rect, h / 2, h / 2);
 640
 641         p.setPen(Qt::black);
 642         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 643 }
 644
 645 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
 646         int h, qreal start, qreal end, int y, const ViewItemPaintParams &pp,
 647         int row_title_width) const
 648 {
 649         const qreal top = y + .5 - h / 2;
 650         const qreal bottom = y + .5 + h / 2;
 651         const vector<QString> annotations = a.annotations();
 652
 653         // If the two ends are within 1 pixel, draw a vertical line
 654         if (start + 1.0 > end) {
 655                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 656                 return;
 657         }
 658
 659         const qreal cap_width = min((end - start) / 4, EndCapWidth);
 660
 661         QPointF pts[] = {
 662                 QPointF(start, y + .5f),
 663                 QPointF(start + cap_width, top),
 664                 QPointF(end - cap_width, top),
 665                 QPointF(end, y + .5f),
 666                 QPointF(end - cap_width, bottom),
 667                 QPointF(start + cap_width, bottom)
 668         };
 669
 670         p.drawConvexPolygon(pts, countof(pts));
 671
 672         if (annotations.empty())
 673                 return;
 674
 675         const int ann_start = start + cap_width;
 676         const int ann_end = end - cap_width;
 677
 678         const int real_start = max(ann_start, pp.left() + row_title_width);
 679         const int real_end = min(ann_end, pp.right());
 680         const int real_width = real_end - real_start;
 681
 682         QRectF rect(real_start, y - h / 2, real_width, h);
 683         if (rect.width() <= 4)
 684                 return;
 685
 686         p.setPen(Qt::black);
 687
 688         // Try to find an annotation that will fit
 689         QString best_annotation;
 690         int best_width = 0;
 691
 692         for (const QString &a : annotations) {
 693                 const int w = p.boundingRect(QRectF(), 0, a).width();
 694                 if (w <= rect.width() && w > best_width)
 695                         best_annotation = a, best_width = w;
 696         }
 697
 698         if (best_annotation.isEmpty())
 699                 best_annotation = annotations.back();
 700
 701         // If not ellide the last in the list
 702         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 703                 best_annotation, Qt::ElideRight, rect.width()));
 704 }
 705
 706 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 707         const ViewItemPaintParams &pp)
 708 {
 709         const int y = get_visual_y();
 710
 711         double samples_per_pixel, pixels_offset;
 712         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 713
 714         p.setPen(ErrorBgColor.darker());
 715         p.setBrush(ErrorBgColor);
 716
 717         const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
 718
 719         const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
 720         const qreal r = text_rect.height() / 4;
 721
 722         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
 723
 724         p.setPen(Qt::black);
 725         p.drawText(text_rect, message);
 726 }
 727
 728 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, int right) const
 729 {
 730         using namespace pv::data;
 731         using pv::data::decode::Decoder;
 732
 733         double samples_per_pixel, pixels_offset;
 734
 735         const int64_t sample_count = decode_signal_->get_working_sample_count(current_segment_);
 736         if (sample_count == 0)
 737                 return;
 738
 739         const int64_t samples_decoded = decode_signal_->get_decoded_sample_count(current_segment_, true);
 740         if (sample_count == samples_decoded)
 741                 return;
 742
 743         const int y = get_visual_y();
 744
 745         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 746
 747         const double start = max(samples_decoded /
 748                 samples_per_pixel - pixels_offset, left - 1.0);
 749         const double end = min(sample_count / samples_per_pixel -
 750                 pixels_offset, right + 1.0);
 751         const QRectF no_decode_rect(start, y - (h / 2) - 0.5, end - start, h);
 752
 753         p.setPen(QPen(Qt::NoPen));
 754         p.setBrush(Qt::white);
 755         p.drawRect(no_decode_rect);
 756
 757         p.setPen(NoDecodeColor);
 758         p.setBrush(QBrush(NoDecodeColor, Qt::Dense6Pattern));
 759         p.drawRect(no_decode_rect);
 760 }
 761
 762 pair<double, double> DecodeTrace::get_pixels_offset_samples_per_pixel() const
 763 {
 764         assert(owner_);
 765
 766         const View *view = owner_->view();
 767         assert(view);
 768
 769         const double scale = view->scale();
 770         assert(scale > 0);
 771
 772         const double pixels_offset =
 773                 ((view->offset() - decode_signal_->start_time()) / scale).convert_to<double>();
 774
 775         double samplerate = decode_signal_->samplerate();
 776
 777         // Show sample rate as 1Hz when it is unknown
 778         if (samplerate == 0.0)
 779                 samplerate = 1.0;
 780
 781         return make_pair(pixels_offset, samplerate * scale);
 782 }
 783
 784 pair<uint64_t, uint64_t> DecodeTrace::get_view_sample_range(
 785         int x_start, int x_end) const
 786 {
 787         double samples_per_pixel, pixels_offset;
 788         tie(pixels_offset, samples_per_pixel) =
 789                 get_pixels_offset_samples_per_pixel();
 790
 791         const uint64_t start = (uint64_t)max(
 792                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
 793         const uint64_t end = (uint64_t)max(
 794                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
 795
 796         return make_pair(start, end);
 797 }
 798
 799 QColor DecodeTrace::get_row_color(int row_index) const
 800 {
 801         // For each row color, use the base color hue and add an offset that's
 802         // not a dividend of 360
 803
 804         QColor color;
 805         const int h = (base_->color().toHsv().hue() + 20 * row_index) % 360;
 806         const int s = DECODETRACE_COLOR_SATURATION;
 807         const int v = DECODETRACE_COLOR_VALUE;
 808         color.setHsl(h, s, v);
 809
 810         return color;
 811 }
 812
 813 QColor DecodeTrace::get_annotation_color(QColor row_color, int annotation_index) const
 814 {
 815         // For each row color, use the base color hue and add an offset that's
 816         // not a dividend of 360 and not a multiple of the row offset
 817
 818         QColor color(row_color);
 819         const int h = (color.toHsv().hue() + 55 * annotation_index) % 360;
 820         const int s = DECODETRACE_COLOR_SATURATION;
 821         const int v = DECODETRACE_COLOR_VALUE;
 822         color.setHsl(h, s, v);
 823
 824         return color;
 825 }
 826
 827 int DecodeTrace::get_row_at_point(const QPoint &point)
 828 {
 829         if (!row_height_)
 830                 return -1;
 831
 832         const int y = (point.y() - get_visual_y() + row_height_ / 2);
 833
 834         /* Integer divison of (x-1)/x would yield 0, so we check for this. */
 835         if (y < 0)
 836                 return -1;
 837
 838         const int row = y / row_height_;
 839
 840         if (row >= (int)visible_rows_.size())
 841                 return -1;
 842
 843         return row;
 844 }
 845
 846 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
 847 {
 848         using namespace pv::data::decode;
 849
 850         if (!enabled())
 851                 return QString();
 852
 853         const pair<uint64_t, uint64_t> sample_range =
 854                 get_view_sample_range(point.x(), point.x() + 1);
 855         const int row = get_row_at_point(point);
 856         if (row < 0)
 857                 return QString();
 858
 859         vector<Annotation> annotations;
 860
 861         decode_signal_->get_annotation_subset(annotations, visible_rows_[row],
 862                 current_segment_, sample_range.first, sample_range.second);
 863
 864         return (annotations.empty()) ?
 865                 QString() : annotations[0].annotations().front();
 866 }
 867
 868 void DecodeTrace::hover_point_changed(const QPoint &hp)
 869 {
 870         Trace::hover_point_changed(hp);
 871
 872         assert(owner_);
 873
 874         const View *const view = owner_->view();
 875         assert(view);
 876
 877         if (hp.x() == 0) {
 878                 QToolTip::hideText();
 879                 return;
 880         }
 881
 882         QString ann = get_annotation_at_point(hp);
 883
 884         if (!row_height_ || ann.isEmpty()) {
 885                 QToolTip::hideText();
 886                 return;
 887         }
 888
 889         const int hover_row = get_row_at_point(hp);
 890
 891         QFontMetrics m(QToolTip::font());
 892         const QRect text_size = m.boundingRect(QRect(), 0, ann);
 893
 894         // This is OS-specific and unfortunately we can't query it, so
 895         // use an approximation to at least try to minimize the error.
 896         const int padding = 8;
 897
 898         // Make sure the tool tip doesn't overlap with the mouse cursor.
 899         // If it did, the tool tip would constantly hide and re-appear.
 900         // We also push it up by one row so that it appears above the
 901         // decode trace, not below.
 902         QPoint p = hp;
 903         p.setX(hp.x() - (text_size.width() / 2) - padding);
 904
 905         p.setY(get_visual_y() - (row_height_ / 2) +
 906                 (hover_row * row_height_) -
 907                 row_height_ - text_size.height() - padding);
 908
 909         QToolTip::showText(view->viewport()->mapToGlobal(p), ann);
 910 }
 911
 912 void DecodeTrace::create_decoder_form(int index,
 913         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
 914         QFormLayout *form)
 915 {
 916         GlobalSettings settings;
 917
 918         assert(dec);
 919         const srd_decoder *const decoder = dec->decoder();
 920         assert(decoder);
 921
 922         const bool decoder_deletable = index > 0;
 923
 924         pv::widgets::DecoderGroupBox *const group =
 925                 new pv::widgets::DecoderGroupBox(
 926                         QString::fromUtf8(decoder->name),
 927                         tr("%1:\n%2").arg(QString::fromUtf8(decoder->longname),
 928                                 QString::fromUtf8(decoder->desc)),
 929                         nullptr, decoder_deletable);
 930         group->set_decoder_visible(dec->shown());
 931
 932         if (decoder_deletable) {
 933                 delete_mapper_.setMapping(group, index);
 934                 connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
 935         }
 936
 937         show_hide_mapper_.setMapping(group, index);
 938         connect(group, SIGNAL(show_hide_decoder()),
 939                 &show_hide_mapper_, SLOT(map()));
 940
 941         QFormLayout *const decoder_form = new QFormLayout;
 942         group->add_layout(decoder_form);
 943
 944         const vector<DecodeChannel> channels = decode_signal_->get_channels();
 945
 946         // Add the channels
 947         for (const DecodeChannel& ch : channels) {
 948                 // Ignore channels not part of the decoder we create the form for
 949                 if (ch.decoder_ != dec)
 950                         continue;
 951
 952                 QComboBox *const combo = create_channel_selector(parent, &ch);
 953                 QComboBox *const combo_init_state = create_channel_selector_init_state(parent, &ch);
 954
 955                 channel_id_map_[combo] = ch.id;
 956                 init_state_map_[combo_init_state] = ch.id;
 957
 958                 connect(combo, SIGNAL(currentIndexChanged(int)),
 959                         this, SLOT(on_channel_selected(int)));
 960                 connect(combo_init_state, SIGNAL(currentIndexChanged(int)),
 961                         this, SLOT(on_init_state_changed(int)));
 962
 963                 QHBoxLayout *const hlayout = new QHBoxLayout;
 964                 hlayout->addWidget(combo);
 965                 hlayout->addWidget(combo_init_state);
 966
 967                 if (!settings.value(GlobalSettings::Key_Dec_InitialStateConfigurable).toBool())
 968                         combo_init_state->hide();
 969
 970                 const QString required_flag = ch.is_optional ? QString() : QString("*");
 971                 decoder_form->addRow(tr("<b>%1</b> (%2) %3")
 972                         .arg(ch.name, ch.desc, required_flag), hlayout);
 973         }
 974
 975         // Add the options
 976         shared_ptr<binding::Decoder> binding(
 977                 new binding::Decoder(decode_signal_, dec));
 978         binding->add_properties_to_form(decoder_form, true);
 979
 980         bindings_.push_back(binding);
 981
 982         form->addRow(group);
 983         decoder_forms_.push_back(group);
 984 }
 985
 986 QComboBox* DecodeTrace::create_channel_selector(QWidget *parent, const DecodeChannel *ch)
 987 {
 988         const auto sigs(session_.signalbases());
 989
 990         // Sort signals in natural order
 991         vector< shared_ptr<data::SignalBase> > sig_list(sigs.begin(), sigs.end());
 992         sort(sig_list.begin(), sig_list.end(),
 993                 [](const shared_ptr<data::SignalBase> &a,
 994                 const shared_ptr<data::SignalBase> &b) {
 995                         return strnatcasecmp(a->name().toStdString(),
 996                                 b->name().toStdString()) < 0; });
 997
 998         QComboBox *selector = new QComboBox(parent);
 999
1000         selector->addItem("-", qVariantFromValue((void*)nullptr));
1001
1002         if (!ch->assigned_signal)
1003                 selector->setCurrentIndex(0);
1004
1005         for (const shared_ptr<data::SignalBase> &b : sig_list) {
1006                 assert(b);
1007                 if (b->logic_data() && b->enabled()) {
1008                         selector->addItem(b->name(),
1009                                 qVariantFromValue((void*)b.get()));
1010
1011                         if (ch->assigned_signal == b.get())
1012                                 selector->setCurrentIndex(selector->count() - 1);
1013                 }
1014         }
1015
1016         return selector;
1017 }
1018
1019 QComboBox* DecodeTrace::create_channel_selector_init_state(QWidget *parent,
1020         const DecodeChannel *ch)
1021 {
1022         QComboBox *selector = new QComboBox(parent);
1023
1024         selector->addItem("0", qVariantFromValue((int)SRD_INITIAL_PIN_LOW));
1025         selector->addItem("1", qVariantFromValue((int)SRD_INITIAL_PIN_HIGH));
1026         selector->addItem("X", qVariantFromValue((int)SRD_INITIAL_PIN_SAME_AS_SAMPLE0));
1027
1028         selector->setCurrentIndex(ch->initial_pin_state);
1029
1030         selector->setToolTip("Initial (assumed) pin value before the first sample");
1031
1032         return selector;
1033 }
1034
1035 void DecodeTrace::export_annotations(vector<Annotation> *annotations) const
1036 {
1037         using namespace pv::data::decode;
1038
1039         GlobalSettings settings;
1040         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
1041
1042         const QString file_name = QFileDialog::getSaveFileName(
1043                 owner_->view(), tr("Export annotations"), dir, tr("Text Files (*.txt);;All Files (*)"));
1044
1045         if (file_name.isEmpty())
1046                 return;
1047
1048         QString format = settings.value(GlobalSettings::Key_Dec_ExportFormat).toString();
1049         const QString quote = format.contains("%q") ? "\"" : "";
1050         format = format.remove("%q");
1051
1052         QFile file(file_name);
1053         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
1054                 QTextStream out_stream(&file);
1055
1056                 for (Annotation &ann : *annotations) {
1057                         const QString sample_range = QString("%1-%2") \
1058                                 .arg(QString::number(ann.start_sample()), QString::number(ann.end_sample()));
1059
1060                         const QString class_name = quote + ann.row()->class_name() + quote;
1061
1062                         QString all_ann_text;
1063                         for (const QString &s : ann.annotations())
1064                                 all_ann_text = all_ann_text + quote + s + quote + ",";
1065                         all_ann_text.chop(1);
1066
1067                         const QString first_ann_text = quote + ann.annotations().front() + quote;
1068
1069                         QString out_text = format;
1070                         out_text = out_text.replace("%s", sample_range);
1071                         out_text = out_text.replace("%d",
1072                                 quote + QString::fromUtf8(ann.row()->decoder()->name) + quote);
1073                         out_text = out_text.replace("%c", class_name);
1074                         out_text = out_text.replace("%1", first_ann_text);
1075                         out_text = out_text.replace("%a", all_ann_text);
1076                         out_stream << out_text << '\n';
1077                 }
1078
1079                 if (out_stream.status() == QTextStream::Ok)
1080                         return;
1081         }
1082
1083         QMessageBox msg(owner_->view());
1084         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
1085         msg.setStandardButtons(QMessageBox::Ok);
1086         msg.setIcon(QMessageBox::Warning);
1087         msg.exec();
1088 }
1089
1090 void DecodeTrace::on_setting_changed(const QString &key, const QVariant &value)
1091 {
1092         Trace::on_setting_changed(key, value);
1093
1094         if (key == GlobalSettings::Key_Dec_AlwaysShowAllRows) {
1095                 visible_rows_.clear();
1096                 max_visible_rows_ = 0;
1097                 always_show_all_rows_ = value.toBool();
1098         }
1099 }
1100
1101 void DecodeTrace::on_new_annotations()
1102 {
1103         if (!delayed_trace_updater_.isActive())
1104                 delayed_trace_updater_.start();
1105 }
1106
1107 void DecodeTrace::on_delayed_trace_update()
1108 {
1109         if (owner_)
1110                 owner_->row_item_appearance_changed(false, true);
1111 }
1112
1113 void DecodeTrace::on_decode_reset()
1114 {
1115         visible_rows_.clear();
1116         max_visible_rows_ = 0;
1117
1118         if (owner_)
1119                 owner_->row_item_appearance_changed(false, true);
1120 }
1121
1122 void DecodeTrace::on_decode_finished()
1123 {
1124         if (owner_)
1125                 owner_->row_item_appearance_changed(false, true);
1126 }
1127
1128 void DecodeTrace::on_pause_decode()
1129 {
1130         if (decode_signal_->is_paused())
1131                 decode_signal_->resume_decode();
1132         else
1133                 decode_signal_->pause_decode();
1134 }
1135
1136 void DecodeTrace::delete_pressed()
1137 {
1138         on_delete();
1139 }
1140
1141 void DecodeTrace::on_delete()
1142 {
1143         session_.remove_decode_signal(decode_signal_);
1144 }
1145
1146 void DecodeTrace::on_channel_selected(int)
1147 {
1148         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1149
1150         // Determine signal that was selected
1151         const data::SignalBase *signal =
1152                 (data::SignalBase*)cb->itemData(cb->currentIndex()).value<void*>();
1153
1154         // Determine decode channel ID this combo box is the channel selector for
1155         const uint16_t id = channel_id_map_.at(cb);
1156
1157         decode_signal_->assign_signal(id, signal);
1158 }
1159
1160 void DecodeTrace::on_channels_updated()
1161 {
1162         if (owner_)
1163                 owner_->row_item_appearance_changed(false, true);
1164 }
1165
1166 void DecodeTrace::on_init_state_changed(int)
1167 {
1168         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1169
1170         // Determine inital pin state that was selected
1171         int init_state = cb->itemData(cb->currentIndex()).value<int>();
1172
1173         // Determine decode channel ID this combo box is the channel selector for
1174         const uint16_t id = init_state_map_.at(cb);
1175
1176         decode_signal_->set_initial_pin_state(id, init_state);
1177 }
1178
1179 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
1180 {
1181         decode_signal_->stack_decoder(decoder);
1182
1183         create_popup_form();
1184 }
1185
1186 void DecodeTrace::on_delete_decoder(int index)
1187 {
1188         decode_signal_->remove_decoder(index);
1189
1190         // Force re-calculation of the trace height, see paint_mid()
1191         max_visible_rows_ = 0;
1192         owner_->extents_changed(false, true);
1193
1194         // Update the popup
1195         create_popup_form();
1196 }
1197
1198 void DecodeTrace::on_show_hide_decoder(int index)
1199 {
1200         const bool state = decode_signal_->toggle_decoder_visibility(index);
1201
1202         assert(index < (int)decoder_forms_.size());
1203         decoder_forms_[index]->set_decoder_visible(state);
1204
1205         if (!state) {
1206                 // Force re-calculation of the trace height, see paint_mid()
1207                 max_visible_rows_ = 0;
1208                 owner_->extents_changed(false, true);
1209         }
1210
1211         if (owner_)
1212                 owner_->row_item_appearance_changed(false, true);
1213 }
1214
1215 void DecodeTrace::on_copy_annotation_to_clipboard()
1216 {
1217         using namespace pv::data::decode;
1218
1219         if (!selected_row_)
1220                 return;
1221
1222         vector<Annotation> *annotations = new vector<Annotation>();
1223
1224         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1225                 current_segment_, selected_sample_range_.first, selected_sample_range_.first);
1226
1227         if (annotations->empty())
1228                 return;
1229
1230         QClipboard *clipboard = QApplication::clipboard();
1231         clipboard->setText(annotations->front().annotations().front(), QClipboard::Clipboard);
1232
1233         if (clipboard->supportsSelection())
1234                 clipboard->setText(annotations->front().annotations().front(), QClipboard::Selection);
1235
1236         delete annotations;
1237 }
1238
1239 void DecodeTrace::on_export_row()
1240 {
1241         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1242         on_export_row_from_here();
1243 }
1244
1245 void DecodeTrace::on_export_all_rows()
1246 {
1247         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1248         on_export_all_rows_from_here();
1249 }
1250
1251 void DecodeTrace::on_export_row_with_cursor()
1252 {
1253         const View *view = owner_->view();
1254         assert(view);
1255
1256         if (!view->cursors()->enabled())
1257                 return;
1258
1259         const double samplerate = session_.get_samplerate();
1260
1261         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1262         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1263
1264         const uint64_t start_sample = (uint64_t)max(
1265                 0.0, start_time.convert_to<double>() * samplerate);
1266         const uint64_t end_sample = (uint64_t)max(
1267                 0.0, end_time.convert_to<double>() * samplerate);
1268
1269         // Are both cursors negative and thus were clamped to 0?
1270         if ((start_sample == 0) && (end_sample == 0))
1271                 return;
1272
1273         selected_sample_range_ = make_pair(start_sample, end_sample);
1274         on_export_row_from_here();
1275 }
1276
1277 void DecodeTrace::on_export_all_rows_with_cursor()
1278 {
1279         const View *view = owner_->view();
1280         assert(view);
1281
1282         if (!view->cursors()->enabled())
1283                 return;
1284
1285         const double samplerate = session_.get_samplerate();
1286
1287         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1288         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1289
1290         const uint64_t start_sample = (uint64_t)max(
1291                 0.0, start_time.convert_to<double>() * samplerate);
1292         const uint64_t end_sample = (uint64_t)max(
1293                 0.0, end_time.convert_to<double>() * samplerate);
1294
1295         // Are both cursors negative and thus were clamped to 0?
1296         if ((start_sample == 0) && (end_sample == 0))
1297                 return;
1298
1299         selected_sample_range_ = make_pair(start_sample, end_sample);
1300         on_export_all_rows_from_here();
1301 }
1302
1303 void DecodeTrace::on_export_row_from_here()
1304 {
1305         using namespace pv::data::decode;
1306
1307         if (!selected_row_)
1308                 return;
1309
1310         vector<Annotation> *annotations = new vector<Annotation>();
1311
1312         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1313                 current_segment_, selected_sample_range_.first, selected_sample_range_.second);
1314
1315         if (annotations->empty())
1316                 return;
1317
1318         export_annotations(annotations);
1319         delete annotations;
1320 }
1321
1322 void DecodeTrace::on_export_all_rows_from_here()
1323 {
1324         using namespace pv::data::decode;
1325
1326         vector<Annotation> *annotations = new vector<Annotation>();
1327
1328         decode_signal_->get_annotation_subset(*annotations, current_segment_,
1329                         selected_sample_range_.first, selected_sample_range_.second);
1330
1331         if (!annotations->empty())
1332                 export_annotations(annotations);
1333
1334         delete annotations;
1335 }
1336
1337 } // namespace trace
1338 } // namespace views
1339 } // namespace pv