pv/views/trace/decodetrace.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 extern "C" {
  21 #include <libsigrokdecode/libsigrokdecode.h>
  22 }
  23
  24 #include <limits>
  25 #include <mutex>
  26 #include <tuple>
  27
  28 #include <extdef.h>
  29
  30 #include <boost/functional/hash.hpp>
  31
  32 #include <QAction>
  33 #include <QApplication>
  34 #include <QClipboard>
  35 #include <QComboBox>
  36 #include <QFileDialog>
  37 #include <QFormLayout>
  38 #include <QLabel>
  39 #include <QMenu>
  40 #include <QMessageBox>
  41 #include <QPushButton>
  42 #include <QTextStream>
  43 #include <QToolTip>
  44
  45 #include "decodetrace.hpp"
  46 #include "view.hpp"
  47 #include "viewport.hpp"
  48
  49 #include <pv/globalsettings.hpp>
  50 #include <pv/session.hpp>
  51 #include <pv/strnatcmp.hpp>
  52 #include <pv/data/decodesignal.hpp>
  53 #include <pv/data/decode/annotation.hpp>
  54 #include <pv/data/decode/decoder.hpp>
  55 #include <pv/data/logic.hpp>
  56 #include <pv/data/logicsegment.hpp>
  57 #include <pv/widgets/decodergroupbox.hpp>
  58 #include <pv/widgets/decodermenu.hpp>
  59
  60 using std::abs;
  61 using std::find_if;
  62 using std::lock_guard;
  63 using std::make_pair;
  64 using std::max;
  65 using std::min;
  66 using std::numeric_limits;
  67 using std::out_of_range;
  68 using std::pair;
  69 using std::shared_ptr;
  70 using std::tie;
  71 using std::vector;
  72
  73 using pv::data::decode::Annotation;
  74 using pv::data::decode::Row;
  75 using pv::data::decode::DecodeChannel;
  76 using pv::data::DecodeSignal;
  77
  78 namespace pv {
  79 namespace views {
  80 namespace trace {
  81
  82
  83 #define DECODETRACE_COLOR_SATURATION (180) /* 0-255 */
  84 #define DECODETRACE_COLOR_VALUE (170) /* 0-255 */
  85
  86 const QColor DecodeTrace::ErrorBgColor = QColor(0xEF, 0x29, 0x29);
  87 const QColor DecodeTrace::NoDecodeColor = QColor(0x88, 0x8A, 0x85);
  88
  89 const int DecodeTrace::ArrowSize = 7;
  90 const double DecodeTrace::EndCapWidth = 5;
  91 const int DecodeTrace::RowTitleMargin = 10;
  92 const int DecodeTrace::DrawPadding = 100;
  93
  94 const int DecodeTrace::MaxTraceUpdateRate = 1; // No more than 1 Hz
  95
  96 DecodeTrace::DecodeTrace(pv::Session &session,
  97         shared_ptr<data::SignalBase> signalbase, int index) :
  98         Trace(signalbase),
  99         session_(session),
 100         max_visible_rows_(0),
 101         delete_mapper_(this),
 102         show_hide_mapper_(this)
 103 {
 104         decode_signal_ = dynamic_pointer_cast<data::DecodeSignal>(base_);
 105
 106         GlobalSettings settings;
 107         always_show_all_rows_ = settings.value(GlobalSettings::Key_Dec_AlwaysShowAllRows).toBool();
 108
 109         GlobalSettings::add_change_handler(this);
 110
 111         // Determine shortest string we want to see displayed in full
 112         QFontMetrics m(QApplication::font());
 113         min_useful_label_width_ = m.width("XX"); // e.g. two hex characters
 114
 115         default_row_height_ = (ViewItemPaintParams::text_height() * 6) / 4;
 116
 117         // For the base color, we want to start at a very different color for
 118         // every decoder stack, so multiply the index with a number that is
 119         // rather close to 180 degrees of the color circle but not a dividend of 360
 120         // Note: The offset equals the color of the first annotation
 121         QColor color;
 122         const int h = (120 + 160 * index) % 360;
 123         const int s = DECODETRACE_COLOR_SATURATION;
 124         const int v = DECODETRACE_COLOR_VALUE;
 125         color.setHsv(h, s, v);
 126         base_->set_color(color);
 127
 128         connect(decode_signal_.get(), SIGNAL(new_annotations()),
 129                 this, SLOT(on_new_annotations()));
 130         connect(decode_signal_.get(), SIGNAL(decode_reset()),
 131                 this, SLOT(on_decode_reset()));
 132         connect(decode_signal_.get(), SIGNAL(decode_finished()),
 133                 this, SLOT(on_decode_finished()));
 134         connect(decode_signal_.get(), SIGNAL(channels_updated()),
 135                 this, SLOT(on_channels_updated()));
 136
 137         connect(&delete_mapper_, SIGNAL(mapped(int)),
 138                 this, SLOT(on_delete_decoder(int)));
 139         connect(&show_hide_mapper_, SIGNAL(mapped(int)),
 140                 this, SLOT(on_show_hide_decoder(int)));
 141
 142         connect(&delayed_trace_updater_, SIGNAL(timeout()),
 143                 this, SLOT(on_delayed_trace_update()));
 144         delayed_trace_updater_.setSingleShot(true);
 145         delayed_trace_updater_.setInterval(1000 / MaxTraceUpdateRate);
 146 }
 147
 148 DecodeTrace::~DecodeTrace()
 149 {
 150         GlobalSettings::remove_change_handler(this);
 151 }
 152
 153 bool DecodeTrace::enabled() const
 154 {
 155         return true;
 156 }
 157
 158 shared_ptr<data::SignalBase> DecodeTrace::base() const
 159 {
 160         return base_;
 161 }
 162
 163 pair<int, int> DecodeTrace::v_extents() const
 164 {
 165         // Make an empty decode trace appear symmetrical
 166         if (max_visible_rows_ == 0)
 167                 return make_pair(-default_row_height_, default_row_height_);
 168
 169         unsigned int height = 0;
 170         for (const RowData& r : rows_)
 171                 if (r.currently_visible)
 172                         height += r.height;
 173
 174         return make_pair(-default_row_height_, height);
 175 }
 176
 177 void DecodeTrace::paint_back(QPainter &p, ViewItemPaintParams &pp)
 178 {
 179         Trace::paint_back(p, pp);
 180         paint_axis(p, pp, get_visual_y());
 181 }
 182
 183 void DecodeTrace::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 184 {
 185         lock_guard<mutex> lock(row_modification_mutex_);
 186
 187         const int text_height = ViewItemPaintParams::text_height();
 188         const int annotation_height = (text_height * 5) / 4;
 189
 190         // Set default pen to allow for text width calculation
 191         p.setPen(Qt::black);
 192
 193         pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pp.left(), pp.right());
 194
 195         // Just because the view says we see a certain sample range it
 196         // doesn't mean we have this many decoded samples, too, so crop
 197         // the range to what has been decoded already
 198         sample_range.second = min((int64_t)sample_range.second,
 199                 decode_signal_->get_decoded_sample_count(current_segment_, false));
 200
 201         for (RowData& r : rows_)
 202                 r.currently_visible = false;
 203         visible_rows_ = 0;
 204         int y = get_visual_y();
 205
 206         for (RowData& r : rows_) {
 207                 vector<Annotation> annotations;
 208                 decode_signal_->get_annotation_subset(annotations, r.decode_row,
 209                         current_segment_, sample_range.first, sample_range.second);
 210
 211                 // Show row if there are visible annotations or when user wants to see
 212                 // all rows that have annotations somewhere and this one is one of them
 213                 size_t ann_count = decode_signal_->get_annotation_count(r.decode_row, current_segment_);
 214                 r.currently_visible = !annotations.empty() || (always_show_all_rows_ && (ann_count > 0));
 215
 216                 if (r.currently_visible) {
 217                         draw_annotations(annotations, p, annotation_height, pp, y,
 218                                 get_row_color(r.decode_row.index()), r.title_width);
 219                         y += r.height;
 220                         visible_rows_++;
 221                 }
 222         }
 223
 224         draw_unresolved_period(p, annotation_height, pp.left(), pp.right());
 225
 226         if (visible_rows_ > max_visible_rows_) {
 227                 max_visible_rows_ = visible_rows_;
 228
 229                 // Call order is important, otherwise the lazy event handler won't work
 230                 owner_->extents_changed(false, true);
 231                 owner_->row_item_appearance_changed(false, true);
 232         }
 233
 234         const QString err = decode_signal_->error_message();
 235         if (!err.isEmpty())
 236                 draw_error(p, err, pp);
 237 }
 238
 239 void DecodeTrace::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 240 {
 241         unsigned int y = get_visual_y();
 242
 243         for (const RowData& r : rows_) {
 244                 if (!r.currently_visible)
 245                         continue;
 246
 247                 p.setPen(QPen(Qt::NoPen));
 248
 249                 if (r.expand_marker_highlighted)
 250                         p.setBrush(QApplication::palette().brush(QPalette::HighlightedText));
 251                 else
 252                         p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 253
 254                 // Draw expansion marker
 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                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 263
 264                 const QRect text_rect(pp.left() + ArrowSize * 2, y - r.height / 2,
 265                         pp.right() - pp.left(), r.height);
 266                 const QString h(r.decode_row.title());
 267                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
 268                         Qt::TextDontClip;
 269
 270                 // Draw the outline
 271                 p.setPen(QApplication::palette().color(QPalette::Base));
 272                 for (int dx = -1; dx <= 1; dx++)
 273                         for (int dy = -1; dy <= 1; dy++)
 274                                 if (dx != 0 && dy != 0)
 275                                         p.drawText(text_rect.translated(dx, dy), f, h);
 276
 277                 // Draw the text
 278                 p.setPen(QApplication::palette().color(QPalette::WindowText));
 279                 p.drawText(text_rect, f, h);
 280
 281                 y += r.height;
 282         }
 283
 284         if (show_hover_marker_)
 285                 paint_hover_marker(p);
 286 }
 287
 288 void DecodeTrace::update_stack_button()
 289 {
 290         const vector< shared_ptr<data::decode::Decoder> > &stack = decode_signal_->decoder_stack();
 291
 292         // Only show decoders in the menu that can be stacked onto the last one in the stack
 293         if (!stack.empty()) {
 294                 const srd_decoder* d = stack.back()->decoder();
 295
 296                 if (d->outputs) {
 297                         pv::widgets::DecoderMenu *const decoder_menu =
 298                                 new pv::widgets::DecoderMenu(stack_button_, (const char*)(d->outputs->data));
 299                         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 300                                 this, SLOT(on_stack_decoder(srd_decoder*)));
 301
 302                         decoder_menu->setStyleSheet("QMenu { menu-scrollable: 1; }");
 303
 304                         stack_button_->setMenu(decoder_menu);
 305                         stack_button_->show();
 306                         return;
 307                 }
 308         }
 309
 310         // No decoders available for stacking
 311         stack_button_->setMenu(nullptr);
 312         stack_button_->hide();
 313 }
 314
 315 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 316 {
 317         using pv::data::decode::Decoder;
 318
 319         assert(form);
 320
 321         // Add the standard options
 322         Trace::populate_popup_form(parent, form);
 323
 324         // Add the decoder options
 325         bindings_.clear();
 326         channel_id_map_.clear();
 327         init_state_map_.clear();
 328         decoder_forms_.clear();
 329
 330         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
 331
 332         if (stack.empty()) {
 333                 QLabel *const l = new QLabel(
 334                         tr("<p><i>No decoders in the stack</i></p>"));
 335                 l->setAlignment(Qt::AlignCenter);
 336                 form->addRow(l);
 337         } else {
 338                 auto iter = stack.cbegin();
 339                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 340                         shared_ptr<Decoder> dec(*iter);
 341                         create_decoder_form(i, dec, parent, form);
 342                 }
 343
 344                 form->addRow(new QLabel(
 345                         tr("<i>* Required channels</i>"), parent));
 346         }
 347
 348         // Add stacking button
 349         stack_button_ = new QPushButton(tr("Stack Decoder"), parent);
 350         stack_button_->setToolTip(tr("Stack a higher-level decoder on top of this one"));
 351         update_stack_button();
 352
 353         QHBoxLayout *stack_button_box = new QHBoxLayout;
 354         stack_button_box->addWidget(stack_button_, 0, Qt::AlignRight);
 355         form->addRow(stack_button_box);
 356 }
 357
 358 QMenu* DecodeTrace::create_header_context_menu(QWidget *parent)
 359 {
 360         QMenu *const menu = Trace::create_header_context_menu(parent);
 361
 362         menu->addSeparator();
 363
 364         QAction *const del = new QAction(tr("Delete"), this);
 365         del->setShortcuts(QKeySequence::Delete);
 366         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 367         menu->addAction(del);
 368
 369         return menu;
 370 }
 371
 372 QMenu* DecodeTrace::create_view_context_menu(QWidget *parent, QPoint &click_pos)
 373 {
 374         // Get entries from default menu before adding our own
 375         QMenu *const menu = new QMenu(parent);
 376
 377         QMenu* default_menu = Trace::create_view_context_menu(parent, click_pos);
 378         if (default_menu) {
 379                 for (QAction *action : default_menu->actions()) {  // clazy:exclude=range-loop
 380                         menu->addAction(action);
 381                         if (action->parent() == default_menu)
 382                                 action->setParent(menu);
 383                 }
 384                 delete default_menu;
 385
 386                 // Add separator if needed
 387                 if (menu->actions().length() > 0)
 388                         menu->addSeparator();
 389         }
 390
 391         selected_row_ = nullptr;
 392         const RowData* r = get_row_at_point(click_pos);
 393         if (r)
 394                 selected_row_ = &(r->decode_row);
 395
 396         const View *const view = owner_->view();
 397         assert(view);
 398         QPoint pos = view->viewport()->mapFrom(parent, click_pos);
 399
 400         // Default sample range is "from here"
 401         const pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pos.x(), pos.x() + 1);
 402         selected_sample_range_ = make_pair(sample_range.first, numeric_limits<uint64_t>::max());
 403
 404         if (decode_signal_->is_paused()) {
 405                 QAction *const resume =
 406                         new QAction(tr("Resume decoding"), this);
 407                 resume->setIcon(QIcon::fromTheme("media-playback-start",
 408                         QIcon(":/icons/media-playback-start.png")));
 409                 connect(resume, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 410                 menu->addAction(resume);
 411         } else {
 412                 QAction *const pause =
 413                         new QAction(tr("Pause decoding"), this);
 414                 pause->setIcon(QIcon::fromTheme("media-playback-pause",
 415                         QIcon(":/icons/media-playback-pause.png")));
 416                 connect(pause, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 417                 menu->addAction(pause);
 418         }
 419
 420         QAction *const copy_annotation_to_clipboard =
 421                 new QAction(tr("Copy annotation text to clipboard"), this);
 422         copy_annotation_to_clipboard->setIcon(QIcon::fromTheme("edit-paste",
 423                 QIcon(":/icons/edit-paste.svg")));
 424         connect(copy_annotation_to_clipboard, SIGNAL(triggered()), this, SLOT(on_copy_annotation_to_clipboard()));
 425         menu->addAction(copy_annotation_to_clipboard);
 426
 427         menu->addSeparator();
 428
 429         QAction *const export_all_rows =
 430                 new QAction(tr("Export all annotations"), this);
 431         export_all_rows->setIcon(QIcon::fromTheme("document-save-as",
 432                 QIcon(":/icons/document-save-as.png")));
 433         connect(export_all_rows, SIGNAL(triggered()), this, SLOT(on_export_all_rows()));
 434         menu->addAction(export_all_rows);
 435
 436         QAction *const export_row =
 437                 new QAction(tr("Export all annotations for this row"), this);
 438         export_row->setIcon(QIcon::fromTheme("document-save-as",
 439                 QIcon(":/icons/document-save-as.png")));
 440         connect(export_row, SIGNAL(triggered()), this, SLOT(on_export_row()));
 441         menu->addAction(export_row);
 442
 443         menu->addSeparator();
 444
 445         QAction *const export_all_rows_from_here =
 446                 new QAction(tr("Export all annotations, starting here"), this);
 447         export_all_rows_from_here->setIcon(QIcon::fromTheme("document-save-as",
 448                 QIcon(":/icons/document-save-as.png")));
 449         connect(export_all_rows_from_here, SIGNAL(triggered()), this, SLOT(on_export_all_rows_from_here()));
 450         menu->addAction(export_all_rows_from_here);
 451
 452         QAction *const export_row_from_here =
 453                 new QAction(tr("Export annotations for this row, starting here"), this);
 454         export_row_from_here->setIcon(QIcon::fromTheme("document-save-as",
 455                 QIcon(":/icons/document-save-as.png")));
 456         connect(export_row_from_here, SIGNAL(triggered()), this, SLOT(on_export_row_from_here()));
 457         menu->addAction(export_row_from_here);
 458
 459         menu->addSeparator();
 460
 461         QAction *const export_all_rows_with_cursor =
 462                 new QAction(tr("Export all annotations within cursor range"), this);
 463         export_all_rows_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 464                 QIcon(":/icons/document-save-as.png")));
 465         connect(export_all_rows_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_all_rows_with_cursor()));
 466         menu->addAction(export_all_rows_with_cursor);
 467
 468         QAction *const export_row_with_cursor =
 469                 new QAction(tr("Export annotations for this row within cursor range"), this);
 470         export_row_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 471                 QIcon(":/icons/document-save-as.png")));
 472         connect(export_row_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_row_with_cursor()));
 473         menu->addAction(export_row_with_cursor);
 474
 475         if (!view->cursors()->enabled()) {
 476                 export_all_rows_with_cursor->setEnabled(false);
 477                 export_row_with_cursor->setEnabled(false);
 478         }
 479
 480         return menu;
 481 }
 482
 483 void DecodeTrace::draw_annotations(vector<pv::data::decode::Annotation> annotations,
 484                 QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 485                 QColor row_color, int row_title_width)
 486 {
 487         using namespace pv::data::decode;
 488
 489         Annotation::Class block_class = 0;
 490         bool block_class_uniform = true;
 491         qreal block_start = 0;
 492         int block_ann_count = 0;
 493
 494         const Annotation *prev_ann;
 495         qreal prev_end = INT_MIN;
 496
 497         qreal a_end;
 498
 499         double samples_per_pixel, pixels_offset;
 500         tie(pixels_offset, samples_per_pixel) =
 501                 get_pixels_offset_samples_per_pixel();
 502
 503         // Sort the annotations by start sample so that decoders
 504         // can't confuse us by creating annotations out of order
 505         stable_sort(annotations.begin(), annotations.end(),
 506                 [](const Annotation &a, const Annotation &b) {
 507                         return a.start_sample() < b.start_sample(); });
 508
 509         // Gather all annotations that form a visual "block" and draw them as such
 510         for (const Annotation &a : annotations) {
 511
 512                 const qreal abs_a_start = a.start_sample() / samples_per_pixel;
 513                 const qreal abs_a_end   = a.end_sample() / samples_per_pixel;
 514
 515                 const qreal a_start = abs_a_start - pixels_offset;
 516                 a_end = abs_a_end - pixels_offset;
 517
 518                 const qreal a_width = a_end - a_start;
 519                 const qreal delta = a_end - prev_end;
 520
 521                 bool a_is_separate = false;
 522
 523                 // Annotation wider than the threshold for a useful label width?
 524                 if (a_width >= min_useful_label_width_) {
 525                         for (const QString &ann_text : a.annotations()) {
 526                                 const qreal w = p.boundingRect(QRectF(), 0, ann_text).width();
 527                                 // Annotation wide enough to fit a label? Don't put it in a block then
 528                                 if (w <= a_width) {
 529                                         a_is_separate = true;
 530                                         break;
 531                                 }
 532                         }
 533                 }
 534
 535                 // Were the previous and this annotation more than a pixel apart?
 536                 if ((abs(delta) > 1) || a_is_separate) {
 537                         // Block was broken, draw annotations that form the current block
 538                         if (block_ann_count == 1)
 539                                 draw_annotation(*prev_ann, p, h, pp, y, row_color,
 540                                         row_title_width);
 541                         else if (block_ann_count > 0)
 542                                 draw_annotation_block(block_start, prev_end, block_class,
 543                                         block_class_uniform, p, h, y, row_color);
 544
 545                         block_ann_count = 0;
 546                 }
 547
 548                 if (a_is_separate) {
 549                         draw_annotation(a, p, h, pp, y, row_color, row_title_width);
 550                         // Next annotation must start a new block. delta will be > 1
 551                         // because we set prev_end to INT_MIN but that's okay since
 552                         // block_ann_count will be 0 and nothing will be drawn
 553                         prev_end = INT_MIN;
 554                         block_ann_count = 0;
 555                 } else {
 556                         prev_end = a_end;
 557                         prev_ann = &a;
 558
 559                         if (block_ann_count == 0) {
 560                                 block_start = a_start;
 561                                 block_class = a.ann_class();
 562                                 block_class_uniform = true;
 563                         } else
 564                                 if (a.ann_class() != block_class)
 565                                         block_class_uniform = false;
 566
 567                         block_ann_count++;
 568                 }
 569         }
 570
 571         if (block_ann_count == 1)
 572                 draw_annotation(*prev_ann, p, h, pp, y, row_color, row_title_width);
 573         else if (block_ann_count > 0)
 574                 draw_annotation_block(block_start, prev_end, block_class,
 575                         block_class_uniform, p, h, y, row_color);
 576 }
 577
 578 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a,
 579         QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 580         QColor row_color, int row_title_width) const
 581 {
 582         double samples_per_pixel, pixels_offset;
 583         tie(pixels_offset, samples_per_pixel) =
 584                 get_pixels_offset_samples_per_pixel();
 585
 586         const double start = a.start_sample() / samples_per_pixel -
 587                 pixels_offset;
 588         const double end = a.end_sample() / samples_per_pixel - pixels_offset;
 589
 590         QColor color = get_annotation_color(row_color, a.ann_class());
 591         p.setPen(color.darker());
 592         p.setBrush(color);
 593
 594         if (start > pp.right() + DrawPadding || end < pp.left() - DrawPadding)
 595                 return;
 596
 597         if (a.start_sample() == a.end_sample())
 598                 draw_instant(a, p, h, start, y);
 599         else
 600                 draw_range(a, p, h, start, end, y, pp, row_title_width);
 601 }
 602
 603 void DecodeTrace::draw_annotation_block(qreal start, qreal end,
 604         Annotation::Class ann_class, bool use_ann_format, QPainter &p, int h,
 605         int y, QColor row_color) const
 606 {
 607         const double top = y + .5 - h / 2;
 608         const double bottom = y + .5 + h / 2;
 609
 610         const QRectF rect(start, top, end - start, bottom - top);
 611         const int r = h / 4;
 612
 613         p.setPen(QPen(Qt::NoPen));
 614         p.setBrush(Qt::white);
 615         p.drawRoundedRect(rect, r, r);
 616
 617         // If all annotations in this block are of the same type, we can use the
 618         // one format that all of these annotations have. Otherwise, we should use
 619         // a neutral color (i.e. gray)
 620         if (use_ann_format) {
 621                 const QColor color = get_annotation_color(row_color, ann_class);
 622                 p.setPen(color.darker());
 623                 p.setBrush(QBrush(color, Qt::Dense4Pattern));
 624         } else {
 625                 p.setPen(Qt::gray);
 626                 p.setBrush(QBrush(Qt::gray, Qt::Dense4Pattern));
 627         }
 628
 629         p.drawRoundedRect(rect, r, r);
 630 }
 631
 632 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
 633         int h, qreal x, int y) const
 634 {
 635         const QString text = a.annotations().empty() ?
 636                 QString() : a.annotations().back();
 637         const qreal w = min((qreal)p.boundingRect(QRectF(), 0, text).width(),
 638                 0.0) + h;
 639         const QRectF rect(x - w / 2, y - h / 2, w, h);
 640
 641         p.drawRoundedRect(rect, h / 2, h / 2);
 642
 643         p.setPen(Qt::black);
 644         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 645 }
 646
 647 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
 648         int h, qreal start, qreal end, int y, const ViewItemPaintParams &pp,
 649         int row_title_width) const
 650 {
 651         const qreal top = y + .5 - h / 2;
 652         const qreal bottom = y + .5 + h / 2;
 653         const vector<QString> annotations = a.annotations();
 654
 655         // If the two ends are within 1 pixel, draw a vertical line
 656         if (start + 1.0 > end) {
 657                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 658                 return;
 659         }
 660
 661         const qreal cap_width = min((end - start) / 4, EndCapWidth);
 662
 663         QPointF pts[] = {
 664                 QPointF(start, y + .5f),
 665                 QPointF(start + cap_width, top),
 666                 QPointF(end - cap_width, top),
 667                 QPointF(end, y + .5f),
 668                 QPointF(end - cap_width, bottom),
 669                 QPointF(start + cap_width, bottom)
 670         };
 671
 672         p.drawConvexPolygon(pts, countof(pts));
 673
 674         if (annotations.empty())
 675                 return;
 676
 677         const int ann_start = start + cap_width;
 678         const int ann_end = end - cap_width;
 679
 680         const int real_start = max(ann_start, pp.left() + row_title_width);
 681         const int real_end = min(ann_end, pp.right());
 682         const int real_width = real_end - real_start;
 683
 684         QRectF rect(real_start, y - h / 2, real_width, h);
 685         if (rect.width() <= 4)
 686                 return;
 687
 688         p.setPen(Qt::black);
 689
 690         // Try to find an annotation that will fit
 691         QString best_annotation;
 692         int best_width = 0;
 693
 694         for (const QString &a : annotations) {
 695                 const int w = p.boundingRect(QRectF(), 0, a).width();
 696                 if (w <= rect.width() && w > best_width)
 697                         best_annotation = a, best_width = w;
 698         }
 699
 700         if (best_annotation.isEmpty())
 701                 best_annotation = annotations.back();
 702
 703         // If not ellide the last in the list
 704         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 705                 best_annotation, Qt::ElideRight, rect.width()));
 706 }
 707
 708 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 709         const ViewItemPaintParams &pp)
 710 {
 711         const int y = get_visual_y();
 712
 713         double samples_per_pixel, pixels_offset;
 714         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 715
 716         p.setPen(ErrorBgColor.darker());
 717         p.setBrush(ErrorBgColor);
 718
 719         const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
 720
 721         const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
 722         const qreal r = text_rect.height() / 4;
 723
 724         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
 725
 726         p.setPen(Qt::black);
 727         p.drawText(text_rect, message);
 728 }
 729
 730 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, int right) const
 731 {
 732         using namespace pv::data;
 733         using pv::data::decode::Decoder;
 734
 735         double samples_per_pixel, pixels_offset;
 736
 737         const int64_t sample_count = decode_signal_->get_working_sample_count(current_segment_);
 738         if (sample_count == 0)
 739                 return;
 740
 741         const int64_t samples_decoded = decode_signal_->get_decoded_sample_count(current_segment_, true);
 742         if (sample_count == samples_decoded)
 743                 return;
 744
 745         const int y = get_visual_y();
 746
 747         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 748
 749         const double start = max(samples_decoded /
 750                 samples_per_pixel - pixels_offset, left - 1.0);
 751         const double end = min(sample_count / samples_per_pixel -
 752                 pixels_offset, right + 1.0);
 753         const QRectF no_decode_rect(start, y - (h / 2) - 0.5, end - start, h);
 754
 755         p.setPen(QPen(Qt::NoPen));
 756         p.setBrush(Qt::white);
 757         p.drawRect(no_decode_rect);
 758
 759         p.setPen(NoDecodeColor);
 760         p.setBrush(QBrush(NoDecodeColor, Qt::Dense6Pattern));
 761         p.drawRect(no_decode_rect);
 762 }
 763
 764 pair<double, double> DecodeTrace::get_pixels_offset_samples_per_pixel() const
 765 {
 766         assert(owner_);
 767
 768         const View *view = owner_->view();
 769         assert(view);
 770
 771         const double scale = view->scale();
 772         assert(scale > 0);
 773
 774         const double pixels_offset =
 775                 ((view->offset() - decode_signal_->start_time()) / scale).convert_to<double>();
 776
 777         double samplerate = decode_signal_->samplerate();
 778
 779         // Show sample rate as 1Hz when it is unknown
 780         if (samplerate == 0.0)
 781                 samplerate = 1.0;
 782
 783         return make_pair(pixels_offset, samplerate * scale);
 784 }
 785
 786 pair<uint64_t, uint64_t> DecodeTrace::get_view_sample_range(
 787         int x_start, int x_end) const
 788 {
 789         double samples_per_pixel, pixels_offset;
 790         tie(pixels_offset, samples_per_pixel) =
 791                 get_pixels_offset_samples_per_pixel();
 792
 793         const uint64_t start = (uint64_t)max(
 794                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
 795         const uint64_t end = (uint64_t)max(
 796                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
 797
 798         return make_pair(start, end);
 799 }
 800
 801 QColor DecodeTrace::get_row_color(int row_index) const
 802 {
 803         // For each row color, use the base color hue and add an offset that's
 804         // not a dividend of 360
 805
 806         QColor color;
 807         const int h = (base_->color().toHsv().hue() + 20 * row_index) % 360;
 808         const int s = DECODETRACE_COLOR_SATURATION;
 809         const int v = DECODETRACE_COLOR_VALUE;
 810         color.setHsl(h, s, v);
 811
 812         return color;
 813 }
 814
 815 QColor DecodeTrace::get_annotation_color(QColor row_color, int annotation_index) const
 816 {
 817         // For each row color, use the base color hue and add an offset that's
 818         // not a dividend of 360 and not a multiple of the row offset
 819
 820         QColor color(row_color);
 821         const int h = (color.toHsv().hue() + 55 * annotation_index) % 360;
 822         const int s = DECODETRACE_COLOR_SATURATION;
 823         const int v = DECODETRACE_COLOR_VALUE;
 824         color.setHsl(h, s, v);
 825
 826         return color;
 827 }
 828
 829 unsigned int DecodeTrace::get_row_y(const RowData* row) const
 830 {
 831         assert(row);
 832
 833         unsigned int y = get_visual_y();
 834
 835         for (const RowData& r : rows_)
 836                 if (row != &r)
 837                         y += r.height;
 838                 else
 839                         break;
 840
 841         return y;
 842 }
 843
 844 RowData* DecodeTrace::get_row_at_point(const QPoint &point)
 845 {
 846         int y = get_visual_y();
 847
 848         for (RowData& r : rows_) {
 849                 if (!r.currently_visible)
 850                         continue;
 851
 852                 if ((point.y() >= y) && (point.y() < (int)(y + r.height)))
 853                         return &r;
 854
 855                 y += r.height;
 856         }
 857
 858         return nullptr;
 859 }
 860
 861 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
 862 {
 863         using namespace pv::data::decode;
 864
 865         if (!enabled())
 866                 return QString();
 867
 868         const pair<uint64_t, uint64_t> sample_range =
 869                 get_view_sample_range(point.x(), point.x() + 1);
 870         const RowData* r = get_row_at_point(point);
 871
 872         if (!r)
 873                 return QString();
 874
 875         vector<Annotation> annotations;
 876
 877         decode_signal_->get_annotation_subset(annotations, r->decode_row,
 878                 current_segment_, sample_range.first, sample_range.second);
 879
 880         return (annotations.empty()) ?
 881                 QString() : annotations[0].annotations().front();
 882 }
 883
 884 void DecodeTrace::hover_point_changed(const QPoint &hp)
 885 {
 886         Trace::hover_point_changed(hp);
 887
 888         assert(owner_);
 889
 890         RowData* hover_row = get_row_at_point(hp);
 891
 892         // Row/class visibility button handling
 893         for (RowData& r : rows_)
 894                 r.expand_marker_highlighted = false;
 895
 896         if (hover_row) {
 897                 int row_y = get_row_y(hover_row);
 898                 if ((hp.x() > 0) && (hp.x() < ArrowSize) &&
 899                         (hp.y() > (int)(row_y - ArrowSize)) && (hp.y() < (int)(row_y + ArrowSize)))
 900                         hover_row->expand_marker_highlighted = true;
 901         }
 902
 903         // Tooltip handling
 904         if (hp.x() > 0) {
 905                 QString ann = get_annotation_at_point(hp);
 906
 907                 if (ann.isEmpty()) {
 908                         QToolTip::hideText();
 909                         return;
 910                 }
 911
 912                 QFontMetrics m(QToolTip::font());
 913                 const QRect text_size = m.boundingRect(QRect(), 0, ann);
 914
 915                 // This is OS-specific and unfortunately we can't query it, so
 916                 // use an approximation to at least try to minimize the error.
 917                 const int padding = 8;
 918
 919                 // Make sure the tool tip doesn't overlap with the mouse cursor.
 920                 // If it did, the tool tip would constantly hide and re-appear.
 921                 // We also push it up by one row so that it appears above the
 922                 // decode trace, not below.
 923                 QPoint p = hp;
 924                 p.setX(hp.x() - (text_size.width() / 2) - padding);
 925
 926                 p.setY(get_row_y(hover_row) - hover_row->height - default_row_height_ -
 927                         text_size.height() - padding);
 928
 929                 const View *const view = owner_->view();
 930                 assert(view);
 931                 QToolTip::showText(view->viewport()->mapToGlobal(p), ann);
 932
 933         } else
 934                 QToolTip::hideText();
 935 }
 936
 937 void DecodeTrace::create_decoder_form(int index,
 938         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
 939         QFormLayout *form)
 940 {
 941         GlobalSettings settings;
 942
 943         assert(dec);
 944         const srd_decoder *const decoder = dec->decoder();
 945         assert(decoder);
 946
 947         const bool decoder_deletable = index > 0;
 948
 949         pv::widgets::DecoderGroupBox *const group =
 950                 new pv::widgets::DecoderGroupBox(
 951                         QString::fromUtf8(decoder->name),
 952                         tr("%1:\n%2").arg(QString::fromUtf8(decoder->longname),
 953                                 QString::fromUtf8(decoder->desc)),
 954                         nullptr, decoder_deletable);
 955         group->set_decoder_visible(dec->shown());
 956
 957         if (decoder_deletable) {
 958                 delete_mapper_.setMapping(group, index);
 959                 connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
 960         }
 961
 962         show_hide_mapper_.setMapping(group, index);
 963         connect(group, SIGNAL(show_hide_decoder()),
 964                 &show_hide_mapper_, SLOT(map()));
 965
 966         QFormLayout *const decoder_form = new QFormLayout;
 967         group->add_layout(decoder_form);
 968
 969         const vector<DecodeChannel> channels = decode_signal_->get_channels();
 970
 971         // Add the channels
 972         for (const DecodeChannel& ch : channels) {
 973                 // Ignore channels not part of the decoder we create the form for
 974                 if (ch.decoder_ != dec)
 975                         continue;
 976
 977                 QComboBox *const combo = create_channel_selector(parent, &ch);
 978                 QComboBox *const combo_init_state = create_channel_selector_init_state(parent, &ch);
 979
 980                 channel_id_map_[combo] = ch.id;
 981                 init_state_map_[combo_init_state] = ch.id;
 982
 983                 connect(combo, SIGNAL(currentIndexChanged(int)),
 984                         this, SLOT(on_channel_selected(int)));
 985                 connect(combo_init_state, SIGNAL(currentIndexChanged(int)),
 986                         this, SLOT(on_init_state_changed(int)));
 987
 988                 QHBoxLayout *const hlayout = new QHBoxLayout;
 989                 hlayout->addWidget(combo);
 990                 hlayout->addWidget(combo_init_state);
 991
 992                 if (!settings.value(GlobalSettings::Key_Dec_InitialStateConfigurable).toBool())
 993                         combo_init_state->hide();
 994
 995                 const QString required_flag = ch.is_optional ? QString() : QString("*");
 996                 decoder_form->addRow(tr("<b>%1</b> (%2) %3")
 997                         .arg(ch.name, ch.desc, required_flag), hlayout);
 998         }
 999
1000         // Add the options
1001         shared_ptr<binding::Decoder> binding(
1002                 new binding::Decoder(decode_signal_, dec));
1003         binding->add_properties_to_form(decoder_form, true);
1004
1005         bindings_.push_back(binding);
1006
1007         form->addRow(group);
1008         decoder_forms_.push_back(group);
1009 }
1010
1011 QComboBox* DecodeTrace::create_channel_selector(QWidget *parent, const DecodeChannel *ch)
1012 {
1013         const auto sigs(session_.signalbases());
1014
1015         // Sort signals in natural order
1016         vector< shared_ptr<data::SignalBase> > sig_list(sigs.begin(), sigs.end());
1017         sort(sig_list.begin(), sig_list.end(),
1018                 [](const shared_ptr<data::SignalBase> &a,
1019                 const shared_ptr<data::SignalBase> &b) {
1020                         return strnatcasecmp(a->name().toStdString(),
1021                                 b->name().toStdString()) < 0; });
1022
1023         QComboBox *selector = new QComboBox(parent);
1024
1025         selector->addItem("-", qVariantFromValue((void*)nullptr));
1026
1027         if (!ch->assigned_signal)
1028                 selector->setCurrentIndex(0);
1029
1030         for (const shared_ptr<data::SignalBase> &b : sig_list) {
1031                 assert(b);
1032                 if (b->logic_data() && b->enabled()) {
1033                         selector->addItem(b->name(),
1034                                 qVariantFromValue((void*)b.get()));
1035
1036                         if (ch->assigned_signal == b.get())
1037                                 selector->setCurrentIndex(selector->count() - 1);
1038                 }
1039         }
1040
1041         return selector;
1042 }
1043
1044 QComboBox* DecodeTrace::create_channel_selector_init_state(QWidget *parent,
1045         const DecodeChannel *ch)
1046 {
1047         QComboBox *selector = new QComboBox(parent);
1048
1049         selector->addItem("0", qVariantFromValue((int)SRD_INITIAL_PIN_LOW));
1050         selector->addItem("1", qVariantFromValue((int)SRD_INITIAL_PIN_HIGH));
1051         selector->addItem("X", qVariantFromValue((int)SRD_INITIAL_PIN_SAME_AS_SAMPLE0));
1052
1053         selector->setCurrentIndex(ch->initial_pin_state);
1054
1055         selector->setToolTip("Initial (assumed) pin value before the first sample");
1056
1057         return selector;
1058 }
1059
1060 void DecodeTrace::export_annotations(vector<Annotation> *annotations) const
1061 {
1062         using namespace pv::data::decode;
1063
1064         GlobalSettings settings;
1065         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
1066
1067         const QString file_name = QFileDialog::getSaveFileName(
1068                 owner_->view(), tr("Export annotations"), dir, tr("Text Files (*.txt);;All Files (*)"));
1069
1070         if (file_name.isEmpty())
1071                 return;
1072
1073         QString format = settings.value(GlobalSettings::Key_Dec_ExportFormat).toString();
1074         const QString quote = format.contains("%q") ? "\"" : "";
1075         format = format.remove("%q");
1076
1077         QFile file(file_name);
1078         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
1079                 QTextStream out_stream(&file);
1080
1081                 for (Annotation &ann : *annotations) {
1082                         const QString sample_range = QString("%1-%2") \
1083                                 .arg(QString::number(ann.start_sample()), QString::number(ann.end_sample()));
1084
1085                         const QString class_name = quote + ann.row()->class_name() + quote;
1086
1087                         QString all_ann_text;
1088                         for (const QString &s : ann.annotations())
1089                                 all_ann_text = all_ann_text + quote + s + quote + ",";
1090                         all_ann_text.chop(1);
1091
1092                         const QString first_ann_text = quote + ann.annotations().front() + quote;
1093
1094                         QString out_text = format;
1095                         out_text = out_text.replace("%s", sample_range);
1096                         out_text = out_text.replace("%d",
1097                                 quote + QString::fromUtf8(ann.row()->decoder()->name) + quote);
1098                         out_text = out_text.replace("%c", class_name);
1099                         out_text = out_text.replace("%1", first_ann_text);
1100                         out_text = out_text.replace("%a", all_ann_text);
1101                         out_stream << out_text << '\n';
1102                 }
1103
1104                 if (out_stream.status() == QTextStream::Ok)
1105                         return;
1106         }
1107
1108         QMessageBox msg(owner_->view());
1109         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
1110         msg.setStandardButtons(QMessageBox::Ok);
1111         msg.setIcon(QMessageBox::Warning);
1112         msg.exec();
1113 }
1114
1115 void DecodeTrace::update_rows()
1116 {
1117         lock_guard<mutex> lock(row_modification_mutex_);
1118
1119         QFontMetrics m(QApplication::font());
1120
1121         for (RowData& r : rows_)
1122                 r.exists = false;
1123
1124         for (const Row& decode_row : decode_signal_->get_rows()) {
1125                 // Find row in our list
1126                 auto r_it = find_if(rows_.begin(), rows_.end(),
1127                         [&](RowData& r){ return r.decode_row == decode_row; });
1128
1129                 RowData* r = nullptr;
1130                 if (r_it == rows_.end()) {
1131                         // Row doesn't exist yet, create and append it
1132                         RowData nr;
1133                         nr.decode_row = decode_row;
1134                         nr.height = default_row_height_;
1135                         nr.currently_visible = false;
1136                         nr.expand_marker_highlighted = false;
1137                         nr.expanded = false;
1138
1139                         rows_.push_back(nr);
1140                         r = &rows_.back();
1141                 } else
1142                         r = &(*r_it);
1143
1144                 r->exists = true;
1145
1146                 const int w = m.boundingRect(r->decode_row.title()).width() + RowTitleMargin;
1147                 r->title_width = w;
1148         }
1149
1150         // Remove any rows that no longer exist, obeying that iterators are invalidated
1151         bool any_exists;
1152         do {
1153                 any_exists = false;
1154
1155                 for (unsigned int i = 0; i < rows_.size(); i++)
1156                         if (!rows_[i].exists) {
1157                                 rows_.erase(rows_.begin() + i);
1158                                 any_exists = true;
1159                                 break;
1160                         }
1161         } while (any_exists);
1162 }
1163
1164 void DecodeTrace::on_setting_changed(const QString &key, const QVariant &value)
1165 {
1166         Trace::on_setting_changed(key, value);
1167
1168         if (key == GlobalSettings::Key_Dec_AlwaysShowAllRows) {
1169                 max_visible_rows_ = 0;
1170                 always_show_all_rows_ = value.toBool();
1171         }
1172 }
1173
1174 void DecodeTrace::on_new_annotations()
1175 {
1176         if (!delayed_trace_updater_.isActive())
1177                 delayed_trace_updater_.start();
1178 }
1179
1180 void DecodeTrace::on_delayed_trace_update()
1181 {
1182         if (owner_)
1183                 owner_->row_item_appearance_changed(false, true);
1184 }
1185
1186 void DecodeTrace::on_decode_reset()
1187 {
1188         max_visible_rows_ = 0;
1189         update_rows();
1190
1191         if (owner_)
1192                 owner_->row_item_appearance_changed(false, true);
1193 }
1194
1195 void DecodeTrace::on_decode_finished()
1196 {
1197         if (owner_)
1198                 owner_->row_item_appearance_changed(false, true);
1199 }
1200
1201 void DecodeTrace::on_pause_decode()
1202 {
1203         if (decode_signal_->is_paused())
1204                 decode_signal_->resume_decode();
1205         else
1206                 decode_signal_->pause_decode();
1207 }
1208
1209 void DecodeTrace::delete_pressed()
1210 {
1211         on_delete();
1212 }
1213
1214 void DecodeTrace::on_delete()
1215 {
1216         session_.remove_decode_signal(decode_signal_);
1217 }
1218
1219 void DecodeTrace::on_channel_selected(int)
1220 {
1221         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1222
1223         // Determine signal that was selected
1224         const data::SignalBase *signal =
1225                 (data::SignalBase*)cb->itemData(cb->currentIndex()).value<void*>();
1226
1227         // Determine decode channel ID this combo box is the channel selector for
1228         const uint16_t id = channel_id_map_.at(cb);
1229
1230         decode_signal_->assign_signal(id, signal);
1231 }
1232
1233 void DecodeTrace::on_channels_updated()
1234 {
1235         if (owner_)
1236                 owner_->row_item_appearance_changed(false, true);
1237 }
1238
1239 void DecodeTrace::on_init_state_changed(int)
1240 {
1241         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1242
1243         // Determine inital pin state that was selected
1244         int init_state = cb->itemData(cb->currentIndex()).value<int>();
1245
1246         // Determine decode channel ID this combo box is the channel selector for
1247         const uint16_t id = init_state_map_.at(cb);
1248
1249         decode_signal_->set_initial_pin_state(id, init_state);
1250 }
1251
1252 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
1253 {
1254         decode_signal_->stack_decoder(decoder);
1255         update_rows();
1256
1257         create_popup_form();
1258 }
1259
1260 void DecodeTrace::on_delete_decoder(int index)
1261 {
1262         decode_signal_->remove_decoder(index);
1263         update_rows();
1264
1265         // Force re-calculation of the trace height
1266         max_visible_rows_ = 0;
1267         owner_->extents_changed(false, true);
1268
1269         create_popup_form();
1270 }
1271
1272 void DecodeTrace::on_show_hide_decoder(int index)
1273 {
1274         const bool state = decode_signal_->toggle_decoder_visibility(index);
1275
1276         assert(index < (int)decoder_forms_.size());
1277         decoder_forms_[index]->set_decoder_visible(state);
1278
1279         if (!state) {
1280                 // Force re-calculation of the trace height, see paint_mid()
1281                 max_visible_rows_ = 0;
1282                 owner_->extents_changed(false, true);
1283         }
1284
1285         if (owner_)
1286                 owner_->row_item_appearance_changed(false, true);
1287 }
1288
1289 void DecodeTrace::on_copy_annotation_to_clipboard()
1290 {
1291         using namespace pv::data::decode;
1292
1293         if (!selected_row_)
1294                 return;
1295
1296         vector<Annotation> *annotations = new vector<Annotation>();
1297
1298         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1299                 current_segment_, selected_sample_range_.first, selected_sample_range_.first);
1300
1301         if (annotations->empty())
1302                 return;
1303
1304         QClipboard *clipboard = QApplication::clipboard();
1305         clipboard->setText(annotations->front().annotations().front(), QClipboard::Clipboard);
1306
1307         if (clipboard->supportsSelection())
1308                 clipboard->setText(annotations->front().annotations().front(), QClipboard::Selection);
1309
1310         delete annotations;
1311 }
1312
1313 void DecodeTrace::on_export_row()
1314 {
1315         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1316         on_export_row_from_here();
1317 }
1318
1319 void DecodeTrace::on_export_all_rows()
1320 {
1321         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1322         on_export_all_rows_from_here();
1323 }
1324
1325 void DecodeTrace::on_export_row_with_cursor()
1326 {
1327         const View *view = owner_->view();
1328         assert(view);
1329
1330         if (!view->cursors()->enabled())
1331                 return;
1332
1333         const double samplerate = session_.get_samplerate();
1334
1335         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1336         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1337
1338         const uint64_t start_sample = (uint64_t)max(
1339                 0.0, start_time.convert_to<double>() * samplerate);
1340         const uint64_t end_sample = (uint64_t)max(
1341                 0.0, end_time.convert_to<double>() * samplerate);
1342
1343         // Are both cursors negative and thus were clamped to 0?
1344         if ((start_sample == 0) && (end_sample == 0))
1345                 return;
1346
1347         selected_sample_range_ = make_pair(start_sample, end_sample);
1348         on_export_row_from_here();
1349 }
1350
1351 void DecodeTrace::on_export_all_rows_with_cursor()
1352 {
1353         const View *view = owner_->view();
1354         assert(view);
1355
1356         if (!view->cursors()->enabled())
1357                 return;
1358
1359         const double samplerate = session_.get_samplerate();
1360
1361         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1362         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1363
1364         const uint64_t start_sample = (uint64_t)max(
1365                 0.0, start_time.convert_to<double>() * samplerate);
1366         const uint64_t end_sample = (uint64_t)max(
1367                 0.0, end_time.convert_to<double>() * samplerate);
1368
1369         // Are both cursors negative and thus were clamped to 0?
1370         if ((start_sample == 0) && (end_sample == 0))
1371                 return;
1372
1373         selected_sample_range_ = make_pair(start_sample, end_sample);
1374         on_export_all_rows_from_here();
1375 }
1376
1377 void DecodeTrace::on_export_row_from_here()
1378 {
1379         using namespace pv::data::decode;
1380
1381         if (!selected_row_)
1382                 return;
1383
1384         vector<Annotation> *annotations = new vector<Annotation>();
1385
1386         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1387                 current_segment_, selected_sample_range_.first, selected_sample_range_.second);
1388
1389         if (annotations->empty())
1390                 return;
1391
1392         export_annotations(annotations);
1393         delete annotations;
1394 }
1395
1396 void DecodeTrace::on_export_all_rows_from_here()
1397 {
1398         using namespace pv::data::decode;
1399
1400         vector<Annotation> *annotations = new vector<Annotation>();
1401
1402         decode_signal_->get_annotation_subset(*annotations, current_segment_,
1403                         selected_sample_range_.first, selected_sample_range_.second);
1404
1405         if (!annotations->empty())
1406                 export_annotations(annotations);
1407
1408         delete annotations;
1409 }
1410
1411 } // namespace trace
1412 } // namespace views
1413 } // namespace pv