pv/views/trace/decodetrace.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 extern "C" {
  21 #include <libsigrokdecode/libsigrokdecode.h>
  22 }
  23
  24 #include <limits>
  25 #include <mutex>
  26 #include <tuple>
  27
  28 #include <extdef.h>
  29
  30 #include <boost/functional/hash.hpp>
  31
  32 #include <QAction>
  33 #include <QApplication>
  34 #include <QClipboard>
  35 #include <QComboBox>
  36 #include <QFileDialog>
  37 #include <QFormLayout>
  38 #include <QLabel>
  39 #include <QMenu>
  40 #include <QMessageBox>
  41 #include <QPushButton>
  42 #include <QTextStream>
  43 #include <QToolTip>
  44
  45 #include "decodetrace.hpp"
  46 #include "view.hpp"
  47 #include "viewport.hpp"
  48
  49 #include <pv/globalsettings.hpp>
  50 #include <pv/session.hpp>
  51 #include <pv/strnatcmp.hpp>
  52 #include <pv/data/decodesignal.hpp>
  53 #include <pv/data/decode/annotation.hpp>
  54 #include <pv/data/decode/decoder.hpp>
  55 #include <pv/data/logic.hpp>
  56 #include <pv/data/logicsegment.hpp>
  57 #include <pv/widgets/decodergroupbox.hpp>
  58 #include <pv/widgets/decodermenu.hpp>
  59
  60 using std::abs;
  61 using std::find_if;
  62 using std::lock_guard;
  63 using std::make_pair;
  64 using std::max;
  65 using std::min;
  66 using std::numeric_limits;
  67 using std::out_of_range;
  68 using std::pair;
  69 using std::shared_ptr;
  70 using std::tie;
  71 using std::vector;
  72
  73 using pv::data::decode::Annotation;
  74 using pv::data::decode::Row;
  75 using pv::data::decode::DecodeChannel;
  76 using pv::data::DecodeSignal;
  77
  78 namespace pv {
  79 namespace views {
  80 namespace trace {
  81
  82
  83 #define DECODETRACE_COLOR_SATURATION (180) /* 0-255 */
  84 #define DECODETRACE_COLOR_VALUE (170) /* 0-255 */
  85
  86 const QColor DecodeTrace::ErrorBgColor = QColor(0xEF, 0x29, 0x29);
  87 const QColor DecodeTrace::NoDecodeColor = QColor(0x88, 0x8A, 0x85);
  88
  89 const int DecodeTrace::ArrowSize = 6;
  90 const double DecodeTrace::EndCapWidth = 5;
  91 const int DecodeTrace::RowTitleMargin = 7;
  92 const int DecodeTrace::DrawPadding = 100;
  93
  94 const int DecodeTrace::MaxTraceUpdateRate = 1; // No more than 1 Hz
  95 const unsigned int DecodeTrace::AnimationDurationInTicks = 7;
  96
  97 DecodeTrace::DecodeTrace(pv::Session &session,
  98         shared_ptr<data::SignalBase> signalbase, int index) :
  99         Trace(signalbase),
 100         session_(session),
 101         max_visible_rows_(0),
 102         delete_mapper_(this),
 103         show_hide_mapper_(this)
 104 {
 105         decode_signal_ = dynamic_pointer_cast<data::DecodeSignal>(base_);
 106
 107         GlobalSettings settings;
 108         always_show_all_rows_ = settings.value(GlobalSettings::Key_Dec_AlwaysShowAllRows).toBool();
 109
 110         GlobalSettings::add_change_handler(this);
 111
 112         // Determine shortest string we want to see displayed in full
 113         QFontMetrics m(QApplication::font());
 114         min_useful_label_width_ = m.width("XX"); // e.g. two hex characters
 115
 116         default_row_height_ = (ViewItemPaintParams::text_height() * 6) / 4;
 117         annotation_height_ = (ViewItemPaintParams::text_height() * 5) / 4;
 118
 119         // For the base color, we want to start at a very different color for
 120         // every decoder stack, so multiply the index with a number that is
 121         // rather close to 180 degrees of the color circle but not a dividend of 360
 122         // Note: The offset equals the color of the first annotation
 123         QColor color;
 124         const int h = (120 + 160 * index) % 360;
 125         const int s = DECODETRACE_COLOR_SATURATION;
 126         const int v = DECODETRACE_COLOR_VALUE;
 127         color.setHsv(h, s, v);
 128         base_->set_color(color);
 129
 130         connect(decode_signal_.get(), SIGNAL(new_annotations()),
 131                 this, SLOT(on_new_annotations()));
 132         connect(decode_signal_.get(), SIGNAL(decode_reset()),
 133                 this, SLOT(on_decode_reset()));
 134         connect(decode_signal_.get(), SIGNAL(decode_finished()),
 135                 this, SLOT(on_decode_finished()));
 136         connect(decode_signal_.get(), SIGNAL(channels_updated()),
 137                 this, SLOT(on_channels_updated()));
 138
 139         connect(&delete_mapper_, SIGNAL(mapped(int)),
 140                 this, SLOT(on_delete_decoder(int)));
 141         connect(&show_hide_mapper_, SIGNAL(mapped(int)),
 142                 this, SLOT(on_show_hide_decoder(int)));
 143
 144         connect(&delayed_trace_updater_, SIGNAL(timeout()),
 145                 this, SLOT(on_delayed_trace_update()));
 146         delayed_trace_updater_.setSingleShot(true);
 147         delayed_trace_updater_.setInterval(1000 / MaxTraceUpdateRate);
 148
 149         connect(&animation_timer_, SIGNAL(timeout()),
 150                 this, SLOT(on_animation_timer()));
 151         animation_timer_.setInterval(1000 / 50);
 152
 153         default_marker_shape_ << QPoint(0,         -ArrowSize);
 154         default_marker_shape_ << QPoint(ArrowSize,  0);
 155         default_marker_shape_ << QPoint(0,          ArrowSize);
 156 }
 157
 158 DecodeTrace::~DecodeTrace()
 159 {
 160         GlobalSettings::remove_change_handler(this);
 161
 162         for (RowData& r : rows_)
 163                 delete r.container;
 164 }
 165
 166 bool DecodeTrace::enabled() const
 167 {
 168         return true;
 169 }
 170
 171 shared_ptr<data::SignalBase> DecodeTrace::base() const
 172 {
 173         return base_;
 174 }
 175
 176 pair<int, int> DecodeTrace::v_extents() const
 177 {
 178         // Make an empty decode trace appear symmetrical
 179         if (max_visible_rows_ == 0)
 180                 return make_pair(-default_row_height_, default_row_height_);
 181
 182         unsigned int height = 0;
 183         for (const RowData& r : rows_)
 184                 if (r.currently_visible)
 185                         height += r.height;
 186
 187         return make_pair(-default_row_height_, height);
 188 }
 189
 190 void DecodeTrace::paint_back(QPainter &p, ViewItemPaintParams &pp)
 191 {
 192         Trace::paint_back(p, pp);
 193         paint_axis(p, pp, get_visual_y());
 194 }
 195
 196 void DecodeTrace::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 197 {
 198         lock_guard<mutex> lock(row_modification_mutex_);
 199
 200         // Set default pen to allow for text width calculation
 201         p.setPen(Qt::black);
 202
 203         pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pp.left(), pp.right());
 204
 205         // Just because the view says we see a certain sample range it
 206         // doesn't mean we have this many decoded samples, too, so crop
 207         // the range to what has been decoded already
 208         sample_range.second = min((int64_t)sample_range.second,
 209                 decode_signal_->get_decoded_sample_count(current_segment_, false));
 210
 211         for (RowData& r : rows_)
 212                 r.currently_visible = false;
 213         visible_rows_ = 0;
 214         int y = get_visual_y();
 215
 216         for (RowData& r : rows_) {
 217                 // If an entire decoder is hidden, we don't want to fetch annotations
 218                 if (!r.decode_row.decoder()->shown()) {
 219                         r.currently_visible = false;
 220                         continue;
 221                 }
 222
 223                 vector<Annotation> annotations;
 224                 decode_signal_->get_annotation_subset(annotations, r.decode_row,
 225                         current_segment_, sample_range.first, sample_range.second);
 226
 227                 // Show row if there are visible annotations or when user wants to see
 228                 // all rows that have annotations somewhere and this one is one of them
 229                 size_t ann_count = decode_signal_->get_annotation_count(r.decode_row, current_segment_);
 230                 r.currently_visible = !annotations.empty() || (always_show_all_rows_ && (ann_count > 0));
 231
 232                 if (r.currently_visible) {
 233                         draw_annotations(annotations, p, annotation_height_, pp, y,
 234                                 get_row_color(r.decode_row.index()), r.title_width);
 235                         y += r.height;
 236                         visible_rows_++;
 237                 }
 238         }
 239
 240         draw_unresolved_period(p, annotation_height_, pp.left(), pp.right());
 241
 242         if (visible_rows_ > max_visible_rows_) {
 243                 max_visible_rows_ = visible_rows_;
 244
 245                 // Call order is important, otherwise the lazy event handler won't work
 246                 owner_->extents_changed(false, true);
 247                 owner_->row_item_appearance_changed(false, true);
 248         }
 249
 250         const QString err = decode_signal_->error_message();
 251         if (!err.isEmpty())
 252                 draw_error(p, err, pp);
 253 }
 254
 255 void DecodeTrace::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 256 {
 257         unsigned int y = get_visual_y();
 258
 259         for (const RowData& r : rows_) {
 260                 if (!r.currently_visible)
 261                         continue;
 262
 263                 p.setPen(QPen(Qt::NoPen));
 264
 265                 if (r.expand_marker_highlighted)
 266                         p.setBrush(QApplication::palette().brush(QPalette::Highlight));
 267                 else
 268                         p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 269
 270                 // Draw expansion marker
 271                 QPolygon marker(r.expand_marker_shape);
 272                 marker.translate(pp.left(), y);
 273                 p.drawPolygon(marker);
 274
 275                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 276
 277                 const QRect text_rect(pp.left() + ArrowSize * 2, y - r.height / 2,
 278                         pp.right() - pp.left(), r.height);
 279                 const QString h(r.decode_row.title());
 280                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
 281                         Qt::TextDontClip;
 282
 283                 // Draw the outline
 284                 p.setPen(QApplication::palette().color(QPalette::Base));
 285                 for (int dx = -1; dx <= 1; dx++)
 286                         for (int dy = -1; dy <= 1; dy++)
 287                                 if (dx != 0 && dy != 0)
 288                                         p.drawText(text_rect.translated(dx, dy), f, h);
 289
 290                 // Draw the text
 291                 p.setPen(QApplication::palette().color(QPalette::WindowText));
 292                 p.drawText(text_rect, f, h);
 293
 294                 y += r.height;
 295         }
 296
 297         if (show_hover_marker_)
 298                 paint_hover_marker(p);
 299 }
 300
 301 void DecodeTrace::update_stack_button()
 302 {
 303         const vector< shared_ptr<data::decode::Decoder> > &stack = decode_signal_->decoder_stack();
 304
 305         // Only show decoders in the menu that can be stacked onto the last one in the stack
 306         if (!stack.empty()) {
 307                 const srd_decoder* d = stack.back()->decoder();
 308
 309                 if (d->outputs) {
 310                         pv::widgets::DecoderMenu *const decoder_menu =
 311                                 new pv::widgets::DecoderMenu(stack_button_, (const char*)(d->outputs->data));
 312                         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 313                                 this, SLOT(on_stack_decoder(srd_decoder*)));
 314
 315                         decoder_menu->setStyleSheet("QMenu { menu-scrollable: 1; }");
 316
 317                         stack_button_->setMenu(decoder_menu);
 318                         stack_button_->show();
 319                         return;
 320                 }
 321         }
 322
 323         // No decoders available for stacking
 324         stack_button_->setMenu(nullptr);
 325         stack_button_->hide();
 326 }
 327
 328 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 329 {
 330         using pv::data::decode::Decoder;
 331
 332         assert(form);
 333
 334         // Add the standard options
 335         Trace::populate_popup_form(parent, form);
 336
 337         // Add the decoder options
 338         bindings_.clear();
 339         channel_id_map_.clear();
 340         init_state_map_.clear();
 341         decoder_forms_.clear();
 342
 343         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
 344
 345         if (stack.empty()) {
 346                 QLabel *const l = new QLabel(
 347                         tr("<p><i>No decoders in the stack</i></p>"));
 348                 l->setAlignment(Qt::AlignCenter);
 349                 form->addRow(l);
 350         } else {
 351                 auto iter = stack.cbegin();
 352                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 353                         shared_ptr<Decoder> dec(*iter);
 354                         create_decoder_form(i, dec, parent, form);
 355                 }
 356
 357                 form->addRow(new QLabel(
 358                         tr("<i>* Required channels</i>"), parent));
 359         }
 360
 361         // Add stacking button
 362         stack_button_ = new QPushButton(tr("Stack Decoder"), parent);
 363         stack_button_->setToolTip(tr("Stack a higher-level decoder on top of this one"));
 364         update_stack_button();
 365
 366         QHBoxLayout *stack_button_box = new QHBoxLayout;
 367         stack_button_box->addWidget(stack_button_, 0, Qt::AlignRight);
 368         form->addRow(stack_button_box);
 369 }
 370
 371 QMenu* DecodeTrace::create_header_context_menu(QWidget *parent)
 372 {
 373         QMenu *const menu = Trace::create_header_context_menu(parent);
 374
 375         menu->addSeparator();
 376
 377         QAction *const del = new QAction(tr("Delete"), this);
 378         del->setShortcuts(QKeySequence::Delete);
 379         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 380         menu->addAction(del);
 381
 382         return menu;
 383 }
 384
 385 QMenu* DecodeTrace::create_view_context_menu(QWidget *parent, QPoint &click_pos)
 386 {
 387         // Get entries from default menu before adding our own
 388         QMenu *const menu = new QMenu(parent);
 389
 390         QMenu* default_menu = Trace::create_view_context_menu(parent, click_pos);
 391         if (default_menu) {
 392                 for (QAction *action : default_menu->actions()) {  // clazy:exclude=range-loop
 393                         menu->addAction(action);
 394                         if (action->parent() == default_menu)
 395                                 action->setParent(menu);
 396                 }
 397                 delete default_menu;
 398
 399                 // Add separator if needed
 400                 if (menu->actions().length() > 0)
 401                         menu->addSeparator();
 402         }
 403
 404         selected_row_ = nullptr;
 405         const RowData* r = get_row_at_point(click_pos);
 406         if (r)
 407                 selected_row_ = &(r->decode_row);
 408
 409         const View *const view = owner_->view();
 410         assert(view);
 411         QPoint pos = view->viewport()->mapFrom(parent, click_pos);
 412
 413         // Default sample range is "from here"
 414         const pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pos.x(), pos.x() + 1);
 415         selected_sample_range_ = make_pair(sample_range.first, numeric_limits<uint64_t>::max());
 416
 417         if (decode_signal_->is_paused()) {
 418                 QAction *const resume =
 419                         new QAction(tr("Resume decoding"), this);
 420                 resume->setIcon(QIcon::fromTheme("media-playback-start",
 421                         QIcon(":/icons/media-playback-start.png")));
 422                 connect(resume, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 423                 menu->addAction(resume);
 424         } else {
 425                 QAction *const pause =
 426                         new QAction(tr("Pause decoding"), this);
 427                 pause->setIcon(QIcon::fromTheme("media-playback-pause",
 428                         QIcon(":/icons/media-playback-pause.png")));
 429                 connect(pause, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
 430                 menu->addAction(pause);
 431         }
 432
 433         QAction *const copy_annotation_to_clipboard =
 434                 new QAction(tr("Copy annotation text to clipboard"), this);
 435         copy_annotation_to_clipboard->setIcon(QIcon::fromTheme("edit-paste",
 436                 QIcon(":/icons/edit-paste.svg")));
 437         connect(copy_annotation_to_clipboard, SIGNAL(triggered()), this, SLOT(on_copy_annotation_to_clipboard()));
 438         menu->addAction(copy_annotation_to_clipboard);
 439
 440         menu->addSeparator();
 441
 442         QAction *const export_all_rows =
 443                 new QAction(tr("Export all annotations"), this);
 444         export_all_rows->setIcon(QIcon::fromTheme("document-save-as",
 445                 QIcon(":/icons/document-save-as.png")));
 446         connect(export_all_rows, SIGNAL(triggered()), this, SLOT(on_export_all_rows()));
 447         menu->addAction(export_all_rows);
 448
 449         QAction *const export_row =
 450                 new QAction(tr("Export all annotations for this row"), this);
 451         export_row->setIcon(QIcon::fromTheme("document-save-as",
 452                 QIcon(":/icons/document-save-as.png")));
 453         connect(export_row, SIGNAL(triggered()), this, SLOT(on_export_row()));
 454         menu->addAction(export_row);
 455
 456         menu->addSeparator();
 457
 458         QAction *const export_all_rows_from_here =
 459                 new QAction(tr("Export all annotations, starting here"), this);
 460         export_all_rows_from_here->setIcon(QIcon::fromTheme("document-save-as",
 461                 QIcon(":/icons/document-save-as.png")));
 462         connect(export_all_rows_from_here, SIGNAL(triggered()), this, SLOT(on_export_all_rows_from_here()));
 463         menu->addAction(export_all_rows_from_here);
 464
 465         QAction *const export_row_from_here =
 466                 new QAction(tr("Export annotations for this row, starting here"), this);
 467         export_row_from_here->setIcon(QIcon::fromTheme("document-save-as",
 468                 QIcon(":/icons/document-save-as.png")));
 469         connect(export_row_from_here, SIGNAL(triggered()), this, SLOT(on_export_row_from_here()));
 470         menu->addAction(export_row_from_here);
 471
 472         menu->addSeparator();
 473
 474         QAction *const export_all_rows_with_cursor =
 475                 new QAction(tr("Export all annotations within cursor range"), this);
 476         export_all_rows_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 477                 QIcon(":/icons/document-save-as.png")));
 478         connect(export_all_rows_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_all_rows_with_cursor()));
 479         menu->addAction(export_all_rows_with_cursor);
 480
 481         QAction *const export_row_with_cursor =
 482                 new QAction(tr("Export annotations for this row within cursor range"), this);
 483         export_row_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
 484                 QIcon(":/icons/document-save-as.png")));
 485         connect(export_row_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_row_with_cursor()));
 486         menu->addAction(export_row_with_cursor);
 487
 488         if (!view->cursors()->enabled()) {
 489                 export_all_rows_with_cursor->setEnabled(false);
 490                 export_row_with_cursor->setEnabled(false);
 491         }
 492
 493         return menu;
 494 }
 495
 496 void DecodeTrace::delete_pressed()
 497 {
 498         on_delete();
 499 }
 500
 501 void DecodeTrace::hover_point_changed(const QPoint &hp)
 502 {
 503         Trace::hover_point_changed(hp);
 504
 505         assert(owner_);
 506
 507         RowData* hover_row = get_row_at_point(hp);
 508
 509         // Row expansion marker handling
 510         for (RowData& r : rows_)
 511                 r.expand_marker_highlighted = false;
 512
 513         if (hover_row) {
 514                 int row_y = get_row_y(hover_row);
 515                 if ((hp.x() > 0) && (hp.x() < 2 * ArrowSize) &&
 516                         (hp.y() > (int)(row_y - ArrowSize)) && (hp.y() < (int)(row_y + ArrowSize)))
 517                         hover_row->expand_marker_highlighted = true;
 518         }
 519
 520         // Tooltip handling
 521         if (hp.x() > 0) {
 522                 QString ann = get_annotation_at_point(hp);
 523
 524                 if (!ann.isEmpty()) {
 525                         QFontMetrics m(QToolTip::font());
 526                         const QRect text_size = m.boundingRect(QRect(), 0, ann);
 527
 528                         // This is OS-specific and unfortunately we can't query it, so
 529                         // use an approximation to at least try to minimize the error.
 530                         const int padding = default_row_height_ + 8;
 531
 532                         // Make sure the tool tip doesn't overlap with the mouse cursor.
 533                         // If it did, the tool tip would constantly hide and re-appear.
 534                         // We also push it up by one row so that it appears above the
 535                         // decode trace, not below.
 536                         QPoint p = hp;
 537                         p.setX(hp.x() - (text_size.width() / 2) - padding);
 538
 539                         p.setY(get_row_y(hover_row) - default_row_height_ -
 540                                 text_size.height() - padding);
 541
 542                         const View *const view = owner_->view();
 543                         assert(view);
 544                         QToolTip::showText(view->viewport()->mapToGlobal(p), ann);
 545
 546                 } else
 547                         QToolTip::hideText();
 548
 549         } else
 550                 QToolTip::hideText();
 551 }
 552
 553 void DecodeTrace::mouse_left_press_event(const QMouseEvent* event)
 554 {
 555         // Handle row expansion marker
 556         for (RowData& r : rows_) {
 557                 if (!r.expand_marker_highlighted)
 558                         continue;
 559
 560                 unsigned int y = get_row_y(&r);
 561                 if ((event->x() > 0) && (event->x() <= (int)(ArrowSize + 3)) &&
 562                         (event->y() > (int)(y - (default_row_height_ / 2))) &&
 563                         (event->y() <= (int)(y + (default_row_height_ / 2)))) {
 564
 565                         if (r.expanded) {
 566                                 r.collapsing = true;
 567                                 r.expanded = false;
 568                                 r.anim_shape = ArrowSize;
 569                         } else {
 570                                 r.expanding = true;
 571                                 r.anim_shape = 0;
 572                                 r.container->setVisible(true);
 573                         }
 574
 575                         r.animation_step = 0;
 576                         r.anim_height = r.height;
 577
 578                         r.container->move(2 * ArrowSize,
 579                                 get_row_y(&r) + default_row_height_);
 580
 581                         animation_timer_.start();
 582                 }
 583         }
 584 }
 585
 586 void DecodeTrace::draw_annotations(vector<pv::data::decode::Annotation> annotations,
 587                 QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 588                 QColor row_color, int row_title_width)
 589 {
 590         using namespace pv::data::decode;
 591
 592         Annotation::Class block_class = 0;
 593         bool block_class_uniform = true;
 594         qreal block_start = 0;
 595         int block_ann_count = 0;
 596
 597         const Annotation *prev_ann;
 598         qreal prev_end = INT_MIN;
 599
 600         qreal a_end;
 601
 602         double samples_per_pixel, pixels_offset;
 603         tie(pixels_offset, samples_per_pixel) =
 604                 get_pixels_offset_samples_per_pixel();
 605
 606         // Sort the annotations by start sample so that decoders
 607         // can't confuse us by creating annotations out of order
 608         stable_sort(annotations.begin(), annotations.end(),
 609                 [](const Annotation &a, const Annotation &b) {
 610                         return a.start_sample() < b.start_sample(); });
 611
 612         // Gather all annotations that form a visual "block" and draw them as such
 613         for (const Annotation &a : annotations) {
 614
 615                 const qreal abs_a_start = a.start_sample() / samples_per_pixel;
 616                 const qreal abs_a_end   = a.end_sample() / samples_per_pixel;
 617
 618                 const qreal a_start = abs_a_start - pixels_offset;
 619                 a_end = abs_a_end - pixels_offset;
 620
 621                 const qreal a_width = a_end - a_start;
 622                 const qreal delta = a_end - prev_end;
 623
 624                 bool a_is_separate = false;
 625
 626                 // Annotation wider than the threshold for a useful label width?
 627                 if (a_width >= min_useful_label_width_) {
 628                         for (const QString &ann_text : a.annotations()) {
 629                                 const qreal w = p.boundingRect(QRectF(), 0, ann_text).width();
 630                                 // Annotation wide enough to fit a label? Don't put it in a block then
 631                                 if (w <= a_width) {
 632                                         a_is_separate = true;
 633                                         break;
 634                                 }
 635                         }
 636                 }
 637
 638                 // Were the previous and this annotation more than a pixel apart?
 639                 if ((abs(delta) > 1) || a_is_separate) {
 640                         // Block was broken, draw annotations that form the current block
 641                         if (block_ann_count == 1)
 642                                 draw_annotation(*prev_ann, p, h, pp, y, row_color,
 643                                         row_title_width);
 644                         else if (block_ann_count > 0)
 645                                 draw_annotation_block(block_start, prev_end, block_class,
 646                                         block_class_uniform, p, h, y, row_color);
 647
 648                         block_ann_count = 0;
 649                 }
 650
 651                 if (a_is_separate) {
 652                         draw_annotation(a, p, h, pp, y, row_color, row_title_width);
 653                         // Next annotation must start a new block. delta will be > 1
 654                         // because we set prev_end to INT_MIN but that's okay since
 655                         // block_ann_count will be 0 and nothing will be drawn
 656                         prev_end = INT_MIN;
 657                         block_ann_count = 0;
 658                 } else {
 659                         prev_end = a_end;
 660                         prev_ann = &a;
 661
 662                         if (block_ann_count == 0) {
 663                                 block_start = a_start;
 664                                 block_class = a.ann_class();
 665                                 block_class_uniform = true;
 666                         } else
 667                                 if (a.ann_class() != block_class)
 668                                         block_class_uniform = false;
 669
 670                         block_ann_count++;
 671                 }
 672         }
 673
 674         if (block_ann_count == 1)
 675                 draw_annotation(*prev_ann, p, h, pp, y, row_color, row_title_width);
 676         else if (block_ann_count > 0)
 677                 draw_annotation_block(block_start, prev_end, block_class,
 678                         block_class_uniform, p, h, y, row_color);
 679 }
 680
 681 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a,
 682         QPainter &p, int h, const ViewItemPaintParams &pp, int y,
 683         QColor row_color, int row_title_width) const
 684 {
 685         double samples_per_pixel, pixels_offset;
 686         tie(pixels_offset, samples_per_pixel) =
 687                 get_pixels_offset_samples_per_pixel();
 688
 689         const double start = a.start_sample() / samples_per_pixel -
 690                 pixels_offset;
 691         const double end = a.end_sample() / samples_per_pixel - pixels_offset;
 692
 693         QColor color = get_annotation_color(row_color, a.ann_class());
 694         p.setPen(color.darker());
 695         p.setBrush(color);
 696
 697         if (start > pp.right() + DrawPadding || end < pp.left() - DrawPadding)
 698                 return;
 699
 700         if (a.start_sample() == a.end_sample())
 701                 draw_instant(a, p, h, start, y);
 702         else
 703                 draw_range(a, p, h, start, end, y, pp, row_title_width);
 704 }
 705
 706 void DecodeTrace::draw_annotation_block(qreal start, qreal end,
 707         Annotation::Class ann_class, bool use_ann_format, QPainter &p, int h,
 708         int y, QColor row_color) const
 709 {
 710         const double top = y + .5 - h / 2;
 711         const double bottom = y + .5 + h / 2;
 712
 713         const QRectF rect(start, top, end - start, bottom - top);
 714         const int r = h / 4;
 715
 716         p.setPen(QPen(Qt::NoPen));
 717         p.setBrush(Qt::white);
 718         p.drawRoundedRect(rect, r, r);
 719
 720         // If all annotations in this block are of the same type, we can use the
 721         // one format that all of these annotations have. Otherwise, we should use
 722         // a neutral color (i.e. gray)
 723         if (use_ann_format) {
 724                 const QColor color = get_annotation_color(row_color, ann_class);
 725                 p.setPen(color.darker());
 726                 p.setBrush(QBrush(color, Qt::Dense4Pattern));
 727         } else {
 728                 p.setPen(Qt::gray);
 729                 p.setBrush(QBrush(Qt::gray, Qt::Dense4Pattern));
 730         }
 731
 732         p.drawRoundedRect(rect, r, r);
 733 }
 734
 735 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
 736         int h, qreal x, int y) const
 737 {
 738         const QString text = a.annotations().empty() ?
 739                 QString() : a.annotations().back();
 740         const qreal w = min((qreal)p.boundingRect(QRectF(), 0, text).width(),
 741                 0.0) + h;
 742         const QRectF rect(x - w / 2, y - h / 2, w, h);
 743
 744         p.drawRoundedRect(rect, h / 2, h / 2);
 745
 746         p.setPen(Qt::black);
 747         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 748 }
 749
 750 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
 751         int h, qreal start, qreal end, int y, const ViewItemPaintParams &pp,
 752         int row_title_width) const
 753 {
 754         const qreal top = y + .5 - h / 2;
 755         const qreal bottom = y + .5 + h / 2;
 756         const vector<QString> annotations = a.annotations();
 757
 758         // If the two ends are within 1 pixel, draw a vertical line
 759         if (start + 1.0 > end) {
 760                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 761                 return;
 762         }
 763
 764         const qreal cap_width = min((end - start) / 4, EndCapWidth);
 765
 766         QPointF pts[] = {
 767                 QPointF(start, y + .5f),
 768                 QPointF(start + cap_width, top),
 769                 QPointF(end - cap_width, top),
 770                 QPointF(end, y + .5f),
 771                 QPointF(end - cap_width, bottom),
 772                 QPointF(start + cap_width, bottom)
 773         };
 774
 775         p.drawConvexPolygon(pts, countof(pts));
 776
 777         if (annotations.empty())
 778                 return;
 779
 780         const int ann_start = start + cap_width;
 781         const int ann_end = end - cap_width;
 782
 783         const int real_start = max(ann_start, pp.left() + ArrowSize + row_title_width);
 784         const int real_end = min(ann_end, pp.right());
 785         const int real_width = real_end - real_start;
 786
 787         QRectF rect(real_start, y - h / 2, real_width, h);
 788         if (rect.width() <= 4)
 789                 return;
 790
 791         p.setPen(Qt::black);
 792
 793         // Try to find an annotation that will fit
 794         QString best_annotation;
 795         int best_width = 0;
 796
 797         for (const QString &a : annotations) {
 798                 const int w = p.boundingRect(QRectF(), 0, a).width();
 799                 if (w <= rect.width() && w > best_width)
 800                         best_annotation = a, best_width = w;
 801         }
 802
 803         if (best_annotation.isEmpty())
 804                 best_annotation = annotations.back();
 805
 806         // If not ellide the last in the list
 807         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 808                 best_annotation, Qt::ElideRight, rect.width()));
 809 }
 810
 811 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 812         const ViewItemPaintParams &pp)
 813 {
 814         const int y = get_visual_y();
 815
 816         double samples_per_pixel, pixels_offset;
 817         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 818
 819         p.setPen(ErrorBgColor.darker());
 820         p.setBrush(ErrorBgColor);
 821
 822         const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
 823
 824         const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
 825         const qreal r = text_rect.height() / 4;
 826
 827         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
 828
 829         p.setPen(Qt::black);
 830         p.drawText(text_rect, message);
 831 }
 832
 833 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, int right) const
 834 {
 835         using namespace pv::data;
 836         using pv::data::decode::Decoder;
 837
 838         double samples_per_pixel, pixels_offset;
 839
 840         const int64_t sample_count = decode_signal_->get_working_sample_count(current_segment_);
 841         if (sample_count == 0)
 842                 return;
 843
 844         const int64_t samples_decoded = decode_signal_->get_decoded_sample_count(current_segment_, true);
 845         if (sample_count == samples_decoded)
 846                 return;
 847
 848         const int y = get_visual_y();
 849
 850         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
 851
 852         const double start = max(samples_decoded /
 853                 samples_per_pixel - pixels_offset, left - 1.0);
 854         const double end = min(sample_count / samples_per_pixel -
 855                 pixels_offset, right + 1.0);
 856         const QRectF no_decode_rect(start, y - (h / 2) - 0.5, end - start, h);
 857
 858         p.setPen(QPen(Qt::NoPen));
 859         p.setBrush(Qt::white);
 860         p.drawRect(no_decode_rect);
 861
 862         p.setPen(NoDecodeColor);
 863         p.setBrush(QBrush(NoDecodeColor, Qt::Dense6Pattern));
 864         p.drawRect(no_decode_rect);
 865 }
 866
 867 pair<double, double> DecodeTrace::get_pixels_offset_samples_per_pixel() const
 868 {
 869         assert(owner_);
 870
 871         const View *view = owner_->view();
 872         assert(view);
 873
 874         const double scale = view->scale();
 875         assert(scale > 0);
 876
 877         const double pixels_offset =
 878                 ((view->offset() - decode_signal_->start_time()) / scale).convert_to<double>();
 879
 880         double samplerate = decode_signal_->samplerate();
 881
 882         // Show sample rate as 1Hz when it is unknown
 883         if (samplerate == 0.0)
 884                 samplerate = 1.0;
 885
 886         return make_pair(pixels_offset, samplerate * scale);
 887 }
 888
 889 pair<uint64_t, uint64_t> DecodeTrace::get_view_sample_range(
 890         int x_start, int x_end) const
 891 {
 892         double samples_per_pixel, pixels_offset;
 893         tie(pixels_offset, samples_per_pixel) =
 894                 get_pixels_offset_samples_per_pixel();
 895
 896         const uint64_t start = (uint64_t)max(
 897                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
 898         const uint64_t end = (uint64_t)max(
 899                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
 900
 901         return make_pair(start, end);
 902 }
 903
 904 QColor DecodeTrace::get_row_color(int row_index) const
 905 {
 906         // For each row color, use the base color hue and add an offset that's
 907         // not a dividend of 360
 908
 909         QColor color;
 910         const int h = (base_->color().toHsv().hue() + 20 * row_index) % 360;
 911         const int s = DECODETRACE_COLOR_SATURATION;
 912         const int v = DECODETRACE_COLOR_VALUE;
 913         color.setHsl(h, s, v);
 914
 915         return color;
 916 }
 917
 918 QColor DecodeTrace::get_annotation_color(QColor row_color, int annotation_index) const
 919 {
 920         // For each row color, use the base color hue and add an offset that's
 921         // not a dividend of 360 and not a multiple of the row offset
 922
 923         QColor color(row_color);
 924         const int h = (color.toHsv().hue() + 55 * annotation_index) % 360;
 925         const int s = DECODETRACE_COLOR_SATURATION;
 926         const int v = DECODETRACE_COLOR_VALUE;
 927         color.setHsl(h, s, v);
 928
 929         return color;
 930 }
 931
 932 unsigned int DecodeTrace::get_row_y(const RowData* row) const
 933 {
 934         assert(row);
 935
 936         unsigned int y = get_visual_y();
 937
 938         for (const RowData& r : rows_) {
 939                 if (!r.currently_visible)
 940                         continue;
 941
 942                 if (row->decode_row == r.decode_row)
 943                         break;
 944                 else
 945                         y += r.height;
 946         }
 947
 948         return y;
 949 }
 950
 951 RowData* DecodeTrace::get_row_at_point(const QPoint &point)
 952 {
 953         int y = get_visual_y() - (default_row_height_ / 2);
 954
 955         for (RowData& r : rows_) {
 956                 if (!r.currently_visible)
 957                         continue;
 958
 959                 if ((point.y() >= y) && (point.y() < (int)(y + r.height)))
 960                         return &r;
 961
 962                 y += r.height;
 963         }
 964
 965         return nullptr;
 966 }
 967
 968 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
 969 {
 970         using namespace pv::data::decode;
 971
 972         if (!enabled())
 973                 return QString();
 974
 975         const pair<uint64_t, uint64_t> sample_range =
 976                 get_view_sample_range(point.x(), point.x() + 1);
 977         const RowData* r = get_row_at_point(point);
 978
 979         if (!r)
 980                 return QString();
 981
 982         if (point.y() > (int)(get_row_y(r) + (annotation_height_ / 2)))
 983                 return QString();
 984
 985         vector<Annotation> annotations;
 986
 987         decode_signal_->get_annotation_subset(annotations, r->decode_row,
 988                 current_segment_, sample_range.first, sample_range.second);
 989
 990         return (annotations.empty()) ?
 991                 QString() : annotations[0].annotations().front();
 992 }
 993
 994 void DecodeTrace::create_decoder_form(int index,
 995         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
 996         QFormLayout *form)
 997 {
 998         GlobalSettings settings;
 999
1000         assert(dec);
1001         const srd_decoder *const decoder = dec->decoder();
1002         assert(decoder);
1003
1004         const bool decoder_deletable = index > 0;
1005
1006         pv::widgets::DecoderGroupBox *const group =
1007                 new pv::widgets::DecoderGroupBox(
1008                         QString::fromUtf8(decoder->name),
1009                         tr("%1:\n%2").arg(QString::fromUtf8(decoder->longname),
1010                                 QString::fromUtf8(decoder->desc)),
1011                         nullptr, decoder_deletable);
1012         group->set_decoder_visible(dec->shown());
1013
1014         if (decoder_deletable) {
1015                 delete_mapper_.setMapping(group, index);
1016                 connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
1017         }
1018
1019         show_hide_mapper_.setMapping(group, index);
1020         connect(group, SIGNAL(show_hide_decoder()),
1021                 &show_hide_mapper_, SLOT(map()));
1022
1023         QFormLayout *const decoder_form = new QFormLayout;
1024         group->add_layout(decoder_form);
1025
1026         const vector<DecodeChannel> channels = decode_signal_->get_channels();
1027
1028         // Add the channels
1029         for (const DecodeChannel& ch : channels) {
1030                 // Ignore channels not part of the decoder we create the form for
1031                 if (ch.decoder_ != dec)
1032                         continue;
1033
1034                 QComboBox *const combo = create_channel_selector(parent, &ch);
1035                 QComboBox *const combo_init_state = create_channel_selector_init_state(parent, &ch);
1036
1037                 channel_id_map_[combo] = ch.id;
1038                 init_state_map_[combo_init_state] = ch.id;
1039
1040                 connect(combo, SIGNAL(currentIndexChanged(int)),
1041                         this, SLOT(on_channel_selected(int)));
1042                 connect(combo_init_state, SIGNAL(currentIndexChanged(int)),
1043                         this, SLOT(on_init_state_changed(int)));
1044
1045                 QHBoxLayout *const hlayout = new QHBoxLayout;
1046                 hlayout->addWidget(combo);
1047                 hlayout->addWidget(combo_init_state);
1048
1049                 if (!settings.value(GlobalSettings::Key_Dec_InitialStateConfigurable).toBool())
1050                         combo_init_state->hide();
1051
1052                 const QString required_flag = ch.is_optional ? QString() : QString("*");
1053                 decoder_form->addRow(tr("<b>%1</b> (%2) %3")
1054                         .arg(ch.name, ch.desc, required_flag), hlayout);
1055         }
1056
1057         // Add the options
1058         shared_ptr<binding::Decoder> binding(
1059                 new binding::Decoder(decode_signal_, dec));
1060         binding->add_properties_to_form(decoder_form, true);
1061
1062         bindings_.push_back(binding);
1063
1064         form->addRow(group);
1065         decoder_forms_.push_back(group);
1066 }
1067
1068 QComboBox* DecodeTrace::create_channel_selector(QWidget *parent, const DecodeChannel *ch)
1069 {
1070         const auto sigs(session_.signalbases());
1071
1072         // Sort signals in natural order
1073         vector< shared_ptr<data::SignalBase> > sig_list(sigs.begin(), sigs.end());
1074         sort(sig_list.begin(), sig_list.end(),
1075                 [](const shared_ptr<data::SignalBase> &a,
1076                 const shared_ptr<data::SignalBase> &b) {
1077                         return strnatcasecmp(a->name().toStdString(),
1078                                 b->name().toStdString()) < 0; });
1079
1080         QComboBox *selector = new QComboBox(parent);
1081
1082         selector->addItem("-", qVariantFromValue((void*)nullptr));
1083
1084         if (!ch->assigned_signal)
1085                 selector->setCurrentIndex(0);
1086
1087         for (const shared_ptr<data::SignalBase> &b : sig_list) {
1088                 assert(b);
1089                 if (b->logic_data() && b->enabled()) {
1090                         selector->addItem(b->name(),
1091                                 qVariantFromValue((void*)b.get()));
1092
1093                         if (ch->assigned_signal == b.get())
1094                                 selector->setCurrentIndex(selector->count() - 1);
1095                 }
1096         }
1097
1098         return selector;
1099 }
1100
1101 QComboBox* DecodeTrace::create_channel_selector_init_state(QWidget *parent,
1102         const DecodeChannel *ch)
1103 {
1104         QComboBox *selector = new QComboBox(parent);
1105
1106         selector->addItem("0", qVariantFromValue((int)SRD_INITIAL_PIN_LOW));
1107         selector->addItem("1", qVariantFromValue((int)SRD_INITIAL_PIN_HIGH));
1108         selector->addItem("X", qVariantFromValue((int)SRD_INITIAL_PIN_SAME_AS_SAMPLE0));
1109
1110         selector->setCurrentIndex(ch->initial_pin_state);
1111
1112         selector->setToolTip("Initial (assumed) pin value before the first sample");
1113
1114         return selector;
1115 }
1116
1117 void DecodeTrace::export_annotations(vector<Annotation> *annotations) const
1118 {
1119         using namespace pv::data::decode;
1120
1121         GlobalSettings settings;
1122         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
1123
1124         const QString file_name = QFileDialog::getSaveFileName(
1125                 owner_->view(), tr("Export annotations"), dir, tr("Text Files (*.txt);;All Files (*)"));
1126
1127         if (file_name.isEmpty())
1128                 return;
1129
1130         QString format = settings.value(GlobalSettings::Key_Dec_ExportFormat).toString();
1131         const QString quote = format.contains("%q") ? "\"" : "";
1132         format = format.remove("%q");
1133
1134         QFile file(file_name);
1135         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
1136                 QTextStream out_stream(&file);
1137
1138                 for (Annotation &ann : *annotations) {
1139                         const QString sample_range = QString("%1-%2") \
1140                                 .arg(QString::number(ann.start_sample()), QString::number(ann.end_sample()));
1141
1142                         const QString class_name = quote + ann.row()->class_name() + quote;
1143
1144                         QString all_ann_text;
1145                         for (const QString &s : ann.annotations())
1146                                 all_ann_text = all_ann_text + quote + s + quote + ",";
1147                         all_ann_text.chop(1);
1148
1149                         const QString first_ann_text = quote + ann.annotations().front() + quote;
1150
1151                         QString out_text = format;
1152                         out_text = out_text.replace("%s", sample_range);
1153                         out_text = out_text.replace("%d",
1154                                 quote + QString::fromUtf8(ann.row()->decoder()->name()) + quote);
1155                         out_text = out_text.replace("%c", class_name);
1156                         out_text = out_text.replace("%1", first_ann_text);
1157                         out_text = out_text.replace("%a", all_ann_text);
1158                         out_stream << out_text << '\n';
1159                 }
1160
1161                 if (out_stream.status() == QTextStream::Ok)
1162                         return;
1163         }
1164
1165         QMessageBox msg(owner_->view());
1166         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
1167         msg.setStandardButtons(QMessageBox::Ok);
1168         msg.setIcon(QMessageBox::Warning);
1169         msg.exec();
1170 }
1171
1172 void DecodeTrace::update_rows()
1173 {
1174         lock_guard<mutex> lock(row_modification_mutex_);
1175
1176         QFontMetrics m(QApplication::font());
1177
1178         for (RowData& r : rows_)
1179                 r.exists = false;
1180
1181         for (const Row& decode_row : decode_signal_->get_rows()) {
1182                 // Find row in our list
1183                 auto r_it = find_if(rows_.begin(), rows_.end(),
1184                         [&](RowData& r){ return r.decode_row == decode_row; });
1185
1186                 RowData* r = nullptr;
1187                 if (r_it == rows_.end()) {
1188                         // Row doesn't exist yet, create and append it
1189                         RowData nr;
1190                         nr.decode_row = decode_row;
1191                         nr.height = default_row_height_;
1192                         nr.expanded_height = 5*default_row_height_;
1193                         nr.currently_visible = false;
1194                         nr.expand_marker_highlighted = false;
1195                         nr.expanding = false;
1196                         nr.expanded = false;
1197                         nr.collapsing = false;
1198                         nr.expand_marker_shape = default_marker_shape_;
1199                         nr.container = new QWidget(owner_->view()->viewport());
1200
1201                         rows_.push_back(nr);
1202                         r = &rows_.back();
1203                 } else
1204                         r = &(*r_it);
1205
1206                 r->exists = true;
1207
1208                 const int w = m.boundingRect(r->decode_row.title()).width() + RowTitleMargin;
1209                 r->title_width = w;
1210
1211                 r->container->resize(owner_->view()->viewport()->width() - r->container->pos().x(),
1212                         r->expanded_height - 2 * default_row_height_);
1213                 r->container->setVisible(false);
1214         }
1215
1216         // Remove any rows that no longer exist, obeying that iterators are invalidated
1217         bool any_exists;
1218         do {
1219                 any_exists = false;
1220
1221                 for (unsigned int i = 0; i < rows_.size(); i++)
1222                         if (!rows_[i].exists) {
1223                                 delete rows_[i].container;
1224                                 rows_.erase(rows_.begin() + i);
1225                                 any_exists = true;
1226                                 break;
1227                         }
1228         } while (any_exists);
1229 }
1230
1231 void DecodeTrace::on_setting_changed(const QString &key, const QVariant &value)
1232 {
1233         Trace::on_setting_changed(key, value);
1234
1235         if (key == GlobalSettings::Key_Dec_AlwaysShowAllRows) {
1236                 max_visible_rows_ = 0;
1237                 always_show_all_rows_ = value.toBool();
1238         }
1239 }
1240
1241 void DecodeTrace::on_new_annotations()
1242 {
1243         if (!delayed_trace_updater_.isActive())
1244                 delayed_trace_updater_.start();
1245 }
1246
1247 void DecodeTrace::on_delayed_trace_update()
1248 {
1249         if (owner_)
1250                 owner_->row_item_appearance_changed(false, true);
1251 }
1252
1253 void DecodeTrace::on_decode_reset()
1254 {
1255         max_visible_rows_ = 0;
1256         update_rows();
1257
1258         if (owner_)
1259                 owner_->row_item_appearance_changed(false, true);
1260 }
1261
1262 void DecodeTrace::on_decode_finished()
1263 {
1264         if (owner_)
1265                 owner_->row_item_appearance_changed(false, true);
1266 }
1267
1268 void DecodeTrace::on_pause_decode()
1269 {
1270         if (decode_signal_->is_paused())
1271                 decode_signal_->resume_decode();
1272         else
1273                 decode_signal_->pause_decode();
1274 }
1275
1276 void DecodeTrace::on_delete()
1277 {
1278         session_.remove_decode_signal(decode_signal_);
1279 }
1280
1281 void DecodeTrace::on_channel_selected(int)
1282 {
1283         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1284
1285         // Determine signal that was selected
1286         const data::SignalBase *signal =
1287                 (data::SignalBase*)cb->itemData(cb->currentIndex()).value<void*>();
1288
1289         // Determine decode channel ID this combo box is the channel selector for
1290         const uint16_t id = channel_id_map_.at(cb);
1291
1292         decode_signal_->assign_signal(id, signal);
1293 }
1294
1295 void DecodeTrace::on_channels_updated()
1296 {
1297         if (owner_)
1298                 owner_->row_item_appearance_changed(false, true);
1299 }
1300
1301 void DecodeTrace::on_init_state_changed(int)
1302 {
1303         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1304
1305         // Determine inital pin state that was selected
1306         int init_state = cb->itemData(cb->currentIndex()).value<int>();
1307
1308         // Determine decode channel ID this combo box is the channel selector for
1309         const uint16_t id = init_state_map_.at(cb);
1310
1311         decode_signal_->set_initial_pin_state(id, init_state);
1312 }
1313
1314 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
1315 {
1316         decode_signal_->stack_decoder(decoder);
1317         update_rows();
1318
1319         create_popup_form();
1320 }
1321
1322 void DecodeTrace::on_delete_decoder(int index)
1323 {
1324         decode_signal_->remove_decoder(index);
1325         update_rows();
1326
1327         // Force re-calculation of the trace height
1328         max_visible_rows_ = 0;
1329         owner_->extents_changed(false, true);
1330
1331         create_popup_form();
1332 }
1333
1334 void DecodeTrace::on_show_hide_decoder(int index)
1335 {
1336         const bool state = decode_signal_->toggle_decoder_visibility(index);
1337
1338         assert(index < (int)decoder_forms_.size());
1339         decoder_forms_[index]->set_decoder_visible(state);
1340
1341         if (!state) {
1342                 // Force re-calculation of the trace height, see paint_mid()
1343                 max_visible_rows_ = 0;
1344                 owner_->extents_changed(false, true);
1345         }
1346
1347         if (owner_)
1348                 owner_->row_item_appearance_changed(false, true);
1349 }
1350
1351 void DecodeTrace::on_copy_annotation_to_clipboard()
1352 {
1353         using namespace pv::data::decode;
1354
1355         if (!selected_row_)
1356                 return;
1357
1358         vector<Annotation> *annotations = new vector<Annotation>();
1359
1360         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1361                 current_segment_, selected_sample_range_.first, selected_sample_range_.first);
1362
1363         if (annotations->empty())
1364                 return;
1365
1366         QClipboard *clipboard = QApplication::clipboard();
1367         clipboard->setText(annotations->front().annotations().front(), QClipboard::Clipboard);
1368
1369         if (clipboard->supportsSelection())
1370                 clipboard->setText(annotations->front().annotations().front(), QClipboard::Selection);
1371
1372         delete annotations;
1373 }
1374
1375 void DecodeTrace::on_export_row()
1376 {
1377         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1378         on_export_row_from_here();
1379 }
1380
1381 void DecodeTrace::on_export_all_rows()
1382 {
1383         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1384         on_export_all_rows_from_here();
1385 }
1386
1387 void DecodeTrace::on_export_row_with_cursor()
1388 {
1389         const View *view = owner_->view();
1390         assert(view);
1391
1392         if (!view->cursors()->enabled())
1393                 return;
1394
1395         const double samplerate = session_.get_samplerate();
1396
1397         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1398         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1399
1400         const uint64_t start_sample = (uint64_t)max(
1401                 0.0, start_time.convert_to<double>() * samplerate);
1402         const uint64_t end_sample = (uint64_t)max(
1403                 0.0, end_time.convert_to<double>() * samplerate);
1404
1405         // Are both cursors negative and thus were clamped to 0?
1406         if ((start_sample == 0) && (end_sample == 0))
1407                 return;
1408
1409         selected_sample_range_ = make_pair(start_sample, end_sample);
1410         on_export_row_from_here();
1411 }
1412
1413 void DecodeTrace::on_export_all_rows_with_cursor()
1414 {
1415         const View *view = owner_->view();
1416         assert(view);
1417
1418         if (!view->cursors()->enabled())
1419                 return;
1420
1421         const double samplerate = session_.get_samplerate();
1422
1423         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1424         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1425
1426         const uint64_t start_sample = (uint64_t)max(
1427                 0.0, start_time.convert_to<double>() * samplerate);
1428         const uint64_t end_sample = (uint64_t)max(
1429                 0.0, end_time.convert_to<double>() * samplerate);
1430
1431         // Are both cursors negative and thus were clamped to 0?
1432         if ((start_sample == 0) && (end_sample == 0))
1433                 return;
1434
1435         selected_sample_range_ = make_pair(start_sample, end_sample);
1436         on_export_all_rows_from_here();
1437 }
1438
1439 void DecodeTrace::on_export_row_from_here()
1440 {
1441         using namespace pv::data::decode;
1442
1443         if (!selected_row_)
1444                 return;
1445
1446         vector<Annotation> *annotations = new vector<Annotation>();
1447
1448         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1449                 current_segment_, selected_sample_range_.first, selected_sample_range_.second);
1450
1451         if (annotations->empty())
1452                 return;
1453
1454         export_annotations(annotations);
1455         delete annotations;
1456 }
1457
1458 void DecodeTrace::on_export_all_rows_from_here()
1459 {
1460         using namespace pv::data::decode;
1461
1462         vector<Annotation> *annotations = new vector<Annotation>();
1463
1464         decode_signal_->get_annotation_subset(*annotations, current_segment_,
1465                         selected_sample_range_.first, selected_sample_range_.second);
1466
1467         if (!annotations->empty())
1468                 export_annotations(annotations);
1469
1470         delete annotations;
1471 }
1472
1473 void DecodeTrace::on_animation_timer()
1474 {
1475         bool animation_finished = true;
1476
1477         for (RowData& r : rows_) {
1478                 if (!(r.expanding || r.collapsing))
1479                         continue;
1480
1481                 unsigned int height_delta = r.expanded_height - default_row_height_;
1482
1483                 if (r.expanding) {
1484                         if (r.height < r.expanded_height) {
1485                                 r.anim_height += height_delta / (float)AnimationDurationInTicks;
1486                                 r.height = r.anim_height;
1487                                 r.anim_shape += ArrowSize / (float)AnimationDurationInTicks;
1488                                 animation_finished = false;
1489                         } else {
1490                                 r.height = std::min(r.height, r.expanded_height);
1491                                 r.expanding = false;
1492                                 r.expanded = true;
1493                         }
1494                 }
1495
1496                 if (r.collapsing) {
1497                         if (r.height > default_row_height_) {
1498                                 r.anim_height -= height_delta / (float)AnimationDurationInTicks;
1499                                 r.height = r.anim_height;
1500                                 r.anim_shape -= ArrowSize / (float)AnimationDurationInTicks;
1501                                 animation_finished = false;
1502                         } else {
1503                                 r.height = std::max(r.height, default_row_height_);
1504                                 r.collapsing = false;
1505                                 r.expanded = false;
1506                                 r.expand_marker_shape = default_marker_shape_;
1507                                 r.container->setVisible(false);
1508                         }
1509                 }
1510
1511                 // The expansion marker shape switches between
1512                 // 0/-A, A/0,  0/A (default state; anim_shape=0) and
1513                 // 0/ 0, A/A, 2A/0 (expanded state; anim_shape=ArrowSize)
1514
1515                 r.expand_marker_shape.setPoint(0, 0, -ArrowSize + r.anim_shape);
1516                 r.expand_marker_shape.setPoint(1, ArrowSize, r.anim_shape);
1517                 r.expand_marker_shape.setPoint(2, 2*r.anim_shape, ArrowSize - r.anim_shape);
1518
1519                 r.container->resize(owner_->view()->viewport()->width() - r.container->pos().x(),
1520                         r.height - 2 * default_row_height_);
1521         }
1522
1523         if (animation_finished)
1524                 animation_timer_.stop();
1525
1526         if (owner_)
1527                 owner_->row_item_appearance_changed(false, true);
1528 }
1529
1530 } // namespace trace
1531 } // namespace views
1532 } // namespace pv