8ea6f74453cdaee48146751821a77037bef6989b
[pulseview.git] / 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         annotation_height_ = (ViewItemPaintParams::text_height() * 5) / 4;
117
118         // For the base color, we want to start at a very different color for
119         // every decoder stack, so multiply the index with a number that is
120         // rather close to 180 degrees of the color circle but not a dividend of 360
121         // Note: The offset equals the color of the first annotation
122         QColor color;
123         const int h = (120 + 160 * index) % 360;
124         const int s = DECODETRACE_COLOR_SATURATION;
125         const int v = DECODETRACE_COLOR_VALUE;
126         color.setHsv(h, s, v);
127         base_->set_color(color);
128
129         connect(decode_signal_.get(), SIGNAL(new_annotations()),
130                 this, SLOT(on_new_annotations()));
131         connect(decode_signal_.get(), SIGNAL(decode_reset()),
132                 this, SLOT(on_decode_reset()));
133         connect(decode_signal_.get(), SIGNAL(decode_finished()),
134                 this, SLOT(on_decode_finished()));
135         connect(decode_signal_.get(), SIGNAL(channels_updated()),
136                 this, SLOT(on_channels_updated()));
137
138         connect(&delete_mapper_, SIGNAL(mapped(int)),
139                 this, SLOT(on_delete_decoder(int)));
140         connect(&show_hide_mapper_, SIGNAL(mapped(int)),
141                 this, SLOT(on_show_hide_decoder(int)));
142
143         connect(&delayed_trace_updater_, SIGNAL(timeout()),
144                 this, SLOT(on_delayed_trace_update()));
145         delayed_trace_updater_.setSingleShot(true);
146         delayed_trace_updater_.setInterval(1000 / MaxTraceUpdateRate);
147 }
148
149 DecodeTrace::~DecodeTrace()
150 {
151         GlobalSettings::remove_change_handler(this);
152 }
153
154 bool DecodeTrace::enabled() const
155 {
156         return true;
157 }
158
159 shared_ptr<data::SignalBase> DecodeTrace::base() const
160 {
161         return base_;
162 }
163
164 pair<int, int> DecodeTrace::v_extents() const
165 {
166         // Make an empty decode trace appear symmetrical
167         if (max_visible_rows_ == 0)
168                 return make_pair(-default_row_height_, default_row_height_);
169
170         unsigned int height = 0;
171         for (const RowData& r : rows_)
172                 if (r.currently_visible)
173                         height += r.height;
174
175         return make_pair(-default_row_height_, height);
176 }
177
178 void DecodeTrace::paint_back(QPainter &p, ViewItemPaintParams &pp)
179 {
180         Trace::paint_back(p, pp);
181         paint_axis(p, pp, get_visual_y());
182 }
183
184 void DecodeTrace::paint_mid(QPainter &p, ViewItemPaintParams &pp)
185 {
186         lock_guard<mutex> lock(row_modification_mutex_);
187
188         // Set default pen to allow for text width calculation
189         p.setPen(Qt::black);
190
191         pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pp.left(), pp.right());
192
193         // Just because the view says we see a certain sample range it
194         // doesn't mean we have this many decoded samples, too, so crop
195         // the range to what has been decoded already
196         sample_range.second = min((int64_t)sample_range.second,
197                 decode_signal_->get_decoded_sample_count(current_segment_, false));
198
199         for (RowData& r : rows_)
200                 r.currently_visible = false;
201         visible_rows_ = 0;
202         int y = get_visual_y();
203
204         for (RowData& r : rows_) {
205                 // If an entire decoder is hidden, we don't want to fetch annotations
206                 if (!r.decode_row.decoder()->shown()) {
207                         r.currently_visible = false;
208                         continue;
209                 }
210
211                 vector<Annotation> annotations;
212                 decode_signal_->get_annotation_subset(annotations, r.decode_row,
213                         current_segment_, sample_range.first, sample_range.second);
214
215                 // Show row if there are visible annotations or when user wants to see
216                 // all rows that have annotations somewhere and this one is one of them
217                 size_t ann_count = decode_signal_->get_annotation_count(r.decode_row, current_segment_);
218                 r.currently_visible = !annotations.empty() || (always_show_all_rows_ && (ann_count > 0));
219
220                 if (r.currently_visible) {
221                         draw_annotations(annotations, p, annotation_height_, pp, y,
222                                 get_row_color(r.decode_row.index()), r.title_width);
223                         y += r.height;
224                         visible_rows_++;
225                 }
226         }
227
228         draw_unresolved_period(p, annotation_height_, pp.left(), pp.right());
229
230         if (visible_rows_ > max_visible_rows_) {
231                 max_visible_rows_ = visible_rows_;
232
233                 // Call order is important, otherwise the lazy event handler won't work
234                 owner_->extents_changed(false, true);
235                 owner_->row_item_appearance_changed(false, true);
236         }
237
238         const QString err = decode_signal_->error_message();
239         if (!err.isEmpty())
240                 draw_error(p, err, pp);
241 }
242
243 void DecodeTrace::paint_fore(QPainter &p, ViewItemPaintParams &pp)
244 {
245         unsigned int y = get_visual_y();
246
247         for (const RowData& r : rows_) {
248                 if (!r.currently_visible)
249                         continue;
250
251                 p.setPen(QPen(Qt::NoPen));
252
253                 if (r.expand_marker_highlighted)
254                         p.setBrush(QApplication::palette().brush(QPalette::HighlightedText));
255                 else
256                         p.setBrush(QApplication::palette().brush(QPalette::WindowText));
257
258                 // Draw expansion marker
259                 const QPointF points[] = {
260                         QPointF(pp.left(), y - ArrowSize),
261                         QPointF(pp.left() + ArrowSize, y),
262                         QPointF(pp.left(), y + ArrowSize)
263                 };
264                 p.drawPolygon(points, countof(points));
265
266                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
267
268                 const QRect text_rect(pp.left() + ArrowSize * 2, y - r.height / 2,
269                         pp.right() - pp.left(), r.height);
270                 const QString h(r.decode_row.title());
271                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
272                         Qt::TextDontClip;
273
274                 // Draw the outline
275                 p.setPen(QApplication::palette().color(QPalette::Base));
276                 for (int dx = -1; dx <= 1; dx++)
277                         for (int dy = -1; dy <= 1; dy++)
278                                 if (dx != 0 && dy != 0)
279                                         p.drawText(text_rect.translated(dx, dy), f, h);
280
281                 // Draw the text
282                 p.setPen(QApplication::palette().color(QPalette::WindowText));
283                 p.drawText(text_rect, f, h);
284
285                 y += r.height;
286         }
287
288         if (show_hover_marker_)
289                 paint_hover_marker(p);
290 }
291
292 void DecodeTrace::update_stack_button()
293 {
294         const vector< shared_ptr<data::decode::Decoder> > &stack = decode_signal_->decoder_stack();
295
296         // Only show decoders in the menu that can be stacked onto the last one in the stack
297         if (!stack.empty()) {
298                 const srd_decoder* d = stack.back()->decoder();
299
300                 if (d->outputs) {
301                         pv::widgets::DecoderMenu *const decoder_menu =
302                                 new pv::widgets::DecoderMenu(stack_button_, (const char*)(d->outputs->data));
303                         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
304                                 this, SLOT(on_stack_decoder(srd_decoder*)));
305
306                         decoder_menu->setStyleSheet("QMenu { menu-scrollable: 1; }");
307
308                         stack_button_->setMenu(decoder_menu);
309                         stack_button_->show();
310                         return;
311                 }
312         }
313
314         // No decoders available for stacking
315         stack_button_->setMenu(nullptr);
316         stack_button_->hide();
317 }
318
319 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
320 {
321         using pv::data::decode::Decoder;
322
323         assert(form);
324
325         // Add the standard options
326         Trace::populate_popup_form(parent, form);
327
328         // Add the decoder options
329         bindings_.clear();
330         channel_id_map_.clear();
331         init_state_map_.clear();
332         decoder_forms_.clear();
333
334         const vector< shared_ptr<Decoder> > &stack = decode_signal_->decoder_stack();
335
336         if (stack.empty()) {
337                 QLabel *const l = new QLabel(
338                         tr("<p><i>No decoders in the stack</i></p>"));
339                 l->setAlignment(Qt::AlignCenter);
340                 form->addRow(l);
341         } else {
342                 auto iter = stack.cbegin();
343                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
344                         shared_ptr<Decoder> dec(*iter);
345                         create_decoder_form(i, dec, parent, form);
346                 }
347
348                 form->addRow(new QLabel(
349                         tr("<i>* Required channels</i>"), parent));
350         }
351
352         // Add stacking button
353         stack_button_ = new QPushButton(tr("Stack Decoder"), parent);
354         stack_button_->setToolTip(tr("Stack a higher-level decoder on top of this one"));
355         update_stack_button();
356
357         QHBoxLayout *stack_button_box = new QHBoxLayout;
358         stack_button_box->addWidget(stack_button_, 0, Qt::AlignRight);
359         form->addRow(stack_button_box);
360 }
361
362 QMenu* DecodeTrace::create_header_context_menu(QWidget *parent)
363 {
364         QMenu *const menu = Trace::create_header_context_menu(parent);
365
366         menu->addSeparator();
367
368         QAction *const del = new QAction(tr("Delete"), this);
369         del->setShortcuts(QKeySequence::Delete);
370         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
371         menu->addAction(del);
372
373         return menu;
374 }
375
376 QMenu* DecodeTrace::create_view_context_menu(QWidget *parent, QPoint &click_pos)
377 {
378         // Get entries from default menu before adding our own
379         QMenu *const menu = new QMenu(parent);
380
381         QMenu* default_menu = Trace::create_view_context_menu(parent, click_pos);
382         if (default_menu) {
383                 for (QAction *action : default_menu->actions()) {  // clazy:exclude=range-loop
384                         menu->addAction(action);
385                         if (action->parent() == default_menu)
386                                 action->setParent(menu);
387                 }
388                 delete default_menu;
389
390                 // Add separator if needed
391                 if (menu->actions().length() > 0)
392                         menu->addSeparator();
393         }
394
395         selected_row_ = nullptr;
396         const RowData* r = get_row_at_point(click_pos);
397         if (r)
398                 selected_row_ = &(r->decode_row);
399
400         const View *const view = owner_->view();
401         assert(view);
402         QPoint pos = view->viewport()->mapFrom(parent, click_pos);
403
404         // Default sample range is "from here"
405         const pair<uint64_t, uint64_t> sample_range = get_view_sample_range(pos.x(), pos.x() + 1);
406         selected_sample_range_ = make_pair(sample_range.first, numeric_limits<uint64_t>::max());
407
408         if (decode_signal_->is_paused()) {
409                 QAction *const resume =
410                         new QAction(tr("Resume decoding"), this);
411                 resume->setIcon(QIcon::fromTheme("media-playback-start",
412                         QIcon(":/icons/media-playback-start.png")));
413                 connect(resume, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
414                 menu->addAction(resume);
415         } else {
416                 QAction *const pause =
417                         new QAction(tr("Pause decoding"), this);
418                 pause->setIcon(QIcon::fromTheme("media-playback-pause",
419                         QIcon(":/icons/media-playback-pause.png")));
420                 connect(pause, SIGNAL(triggered()), this, SLOT(on_pause_decode()));
421                 menu->addAction(pause);
422         }
423
424         QAction *const copy_annotation_to_clipboard =
425                 new QAction(tr("Copy annotation text to clipboard"), this);
426         copy_annotation_to_clipboard->setIcon(QIcon::fromTheme("edit-paste",
427                 QIcon(":/icons/edit-paste.svg")));
428         connect(copy_annotation_to_clipboard, SIGNAL(triggered()), this, SLOT(on_copy_annotation_to_clipboard()));
429         menu->addAction(copy_annotation_to_clipboard);
430
431         menu->addSeparator();
432
433         QAction *const export_all_rows =
434                 new QAction(tr("Export all annotations"), this);
435         export_all_rows->setIcon(QIcon::fromTheme("document-save-as",
436                 QIcon(":/icons/document-save-as.png")));
437         connect(export_all_rows, SIGNAL(triggered()), this, SLOT(on_export_all_rows()));
438         menu->addAction(export_all_rows);
439
440         QAction *const export_row =
441                 new QAction(tr("Export all annotations for this row"), this);
442         export_row->setIcon(QIcon::fromTheme("document-save-as",
443                 QIcon(":/icons/document-save-as.png")));
444         connect(export_row, SIGNAL(triggered()), this, SLOT(on_export_row()));
445         menu->addAction(export_row);
446
447         menu->addSeparator();
448
449         QAction *const export_all_rows_from_here =
450                 new QAction(tr("Export all annotations, starting here"), this);
451         export_all_rows_from_here->setIcon(QIcon::fromTheme("document-save-as",
452                 QIcon(":/icons/document-save-as.png")));
453         connect(export_all_rows_from_here, SIGNAL(triggered()), this, SLOT(on_export_all_rows_from_here()));
454         menu->addAction(export_all_rows_from_here);
455
456         QAction *const export_row_from_here =
457                 new QAction(tr("Export annotations for this row, starting here"), this);
458         export_row_from_here->setIcon(QIcon::fromTheme("document-save-as",
459                 QIcon(":/icons/document-save-as.png")));
460         connect(export_row_from_here, SIGNAL(triggered()), this, SLOT(on_export_row_from_here()));
461         menu->addAction(export_row_from_here);
462
463         menu->addSeparator();
464
465         QAction *const export_all_rows_with_cursor =
466                 new QAction(tr("Export all annotations within cursor range"), this);
467         export_all_rows_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
468                 QIcon(":/icons/document-save-as.png")));
469         connect(export_all_rows_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_all_rows_with_cursor()));
470         menu->addAction(export_all_rows_with_cursor);
471
472         QAction *const export_row_with_cursor =
473                 new QAction(tr("Export annotations for this row within cursor range"), this);
474         export_row_with_cursor->setIcon(QIcon::fromTheme("document-save-as",
475                 QIcon(":/icons/document-save-as.png")));
476         connect(export_row_with_cursor, SIGNAL(triggered()), this, SLOT(on_export_row_with_cursor()));
477         menu->addAction(export_row_with_cursor);
478
479         if (!view->cursors()->enabled()) {
480                 export_all_rows_with_cursor->setEnabled(false);
481                 export_row_with_cursor->setEnabled(false);
482         }
483
484         return menu;
485 }
486
487 void DecodeTrace::draw_annotations(vector<pv::data::decode::Annotation> annotations,
488                 QPainter &p, int h, const ViewItemPaintParams &pp, int y,
489                 QColor row_color, int row_title_width)
490 {
491         using namespace pv::data::decode;
492
493         Annotation::Class block_class = 0;
494         bool block_class_uniform = true;
495         qreal block_start = 0;
496         int block_ann_count = 0;
497
498         const Annotation *prev_ann;
499         qreal prev_end = INT_MIN;
500
501         qreal a_end;
502
503         double samples_per_pixel, pixels_offset;
504         tie(pixels_offset, samples_per_pixel) =
505                 get_pixels_offset_samples_per_pixel();
506
507         // Sort the annotations by start sample so that decoders
508         // can't confuse us by creating annotations out of order
509         stable_sort(annotations.begin(), annotations.end(),
510                 [](const Annotation &a, const Annotation &b) {
511                         return a.start_sample() < b.start_sample(); });
512
513         // Gather all annotations that form a visual "block" and draw them as such
514         for (const Annotation &a : annotations) {
515
516                 const qreal abs_a_start = a.start_sample() / samples_per_pixel;
517                 const qreal abs_a_end   = a.end_sample() / samples_per_pixel;
518
519                 const qreal a_start = abs_a_start - pixels_offset;
520                 a_end = abs_a_end - pixels_offset;
521
522                 const qreal a_width = a_end - a_start;
523                 const qreal delta = a_end - prev_end;
524
525                 bool a_is_separate = false;
526
527                 // Annotation wider than the threshold for a useful label width?
528                 if (a_width >= min_useful_label_width_) {
529                         for (const QString &ann_text : a.annotations()) {
530                                 const qreal w = p.boundingRect(QRectF(), 0, ann_text).width();
531                                 // Annotation wide enough to fit a label? Don't put it in a block then
532                                 if (w <= a_width) {
533                                         a_is_separate = true;
534                                         break;
535                                 }
536                         }
537                 }
538
539                 // Were the previous and this annotation more than a pixel apart?
540                 if ((abs(delta) > 1) || a_is_separate) {
541                         // Block was broken, draw annotations that form the current block
542                         if (block_ann_count == 1)
543                                 draw_annotation(*prev_ann, p, h, pp, y, row_color,
544                                         row_title_width);
545                         else if (block_ann_count > 0)
546                                 draw_annotation_block(block_start, prev_end, block_class,
547                                         block_class_uniform, p, h, y, row_color);
548
549                         block_ann_count = 0;
550                 }
551
552                 if (a_is_separate) {
553                         draw_annotation(a, p, h, pp, y, row_color, row_title_width);
554                         // Next annotation must start a new block. delta will be > 1
555                         // because we set prev_end to INT_MIN but that's okay since
556                         // block_ann_count will be 0 and nothing will be drawn
557                         prev_end = INT_MIN;
558                         block_ann_count = 0;
559                 } else {
560                         prev_end = a_end;
561                         prev_ann = &a;
562
563                         if (block_ann_count == 0) {
564                                 block_start = a_start;
565                                 block_class = a.ann_class();
566                                 block_class_uniform = true;
567                         } else
568                                 if (a.ann_class() != block_class)
569                                         block_class_uniform = false;
570
571                         block_ann_count++;
572                 }
573         }
574
575         if (block_ann_count == 1)
576                 draw_annotation(*prev_ann, p, h, pp, y, row_color, row_title_width);
577         else if (block_ann_count > 0)
578                 draw_annotation_block(block_start, prev_end, block_class,
579                         block_class_uniform, p, h, y, row_color);
580 }
581
582 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a,
583         QPainter &p, int h, const ViewItemPaintParams &pp, int y,
584         QColor row_color, int row_title_width) const
585 {
586         double samples_per_pixel, pixels_offset;
587         tie(pixels_offset, samples_per_pixel) =
588                 get_pixels_offset_samples_per_pixel();
589
590         const double start = a.start_sample() / samples_per_pixel -
591                 pixels_offset;
592         const double end = a.end_sample() / samples_per_pixel - pixels_offset;
593
594         QColor color = get_annotation_color(row_color, a.ann_class());
595         p.setPen(color.darker());
596         p.setBrush(color);
597
598         if (start > pp.right() + DrawPadding || end < pp.left() - DrawPadding)
599                 return;
600
601         if (a.start_sample() == a.end_sample())
602                 draw_instant(a, p, h, start, y);
603         else
604                 draw_range(a, p, h, start, end, y, pp, row_title_width);
605 }
606
607 void DecodeTrace::draw_annotation_block(qreal start, qreal end,
608         Annotation::Class ann_class, bool use_ann_format, QPainter &p, int h,
609         int y, QColor row_color) const
610 {
611         const double top = y + .5 - h / 2;
612         const double bottom = y + .5 + h / 2;
613
614         const QRectF rect(start, top, end - start, bottom - top);
615         const int r = h / 4;
616
617         p.setPen(QPen(Qt::NoPen));
618         p.setBrush(Qt::white);
619         p.drawRoundedRect(rect, r, r);
620
621         // If all annotations in this block are of the same type, we can use the
622         // one format that all of these annotations have. Otherwise, we should use
623         // a neutral color (i.e. gray)
624         if (use_ann_format) {
625                 const QColor color = get_annotation_color(row_color, ann_class);
626                 p.setPen(color.darker());
627                 p.setBrush(QBrush(color, Qt::Dense4Pattern));
628         } else {
629                 p.setPen(Qt::gray);
630                 p.setBrush(QBrush(Qt::gray, Qt::Dense4Pattern));
631         }
632
633         p.drawRoundedRect(rect, r, r);
634 }
635
636 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
637         int h, qreal x, int y) const
638 {
639         const QString text = a.annotations().empty() ?
640                 QString() : a.annotations().back();
641         const qreal w = min((qreal)p.boundingRect(QRectF(), 0, text).width(),
642                 0.0) + h;
643         const QRectF rect(x - w / 2, y - h / 2, w, h);
644
645         p.drawRoundedRect(rect, h / 2, h / 2);
646
647         p.setPen(Qt::black);
648         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
649 }
650
651 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
652         int h, qreal start, qreal end, int y, const ViewItemPaintParams &pp,
653         int row_title_width) const
654 {
655         const qreal top = y + .5 - h / 2;
656         const qreal bottom = y + .5 + h / 2;
657         const vector<QString> annotations = a.annotations();
658
659         // If the two ends are within 1 pixel, draw a vertical line
660         if (start + 1.0 > end) {
661                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
662                 return;
663         }
664
665         const qreal cap_width = min((end - start) / 4, EndCapWidth);
666
667         QPointF pts[] = {
668                 QPointF(start, y + .5f),
669                 QPointF(start + cap_width, top),
670                 QPointF(end - cap_width, top),
671                 QPointF(end, y + .5f),
672                 QPointF(end - cap_width, bottom),
673                 QPointF(start + cap_width, bottom)
674         };
675
676         p.drawConvexPolygon(pts, countof(pts));
677
678         if (annotations.empty())
679                 return;
680
681         const int ann_start = start + cap_width;
682         const int ann_end = end - cap_width;
683
684         const int real_start = max(ann_start, pp.left() + row_title_width);
685         const int real_end = min(ann_end, pp.right());
686         const int real_width = real_end - real_start;
687
688         QRectF rect(real_start, y - h / 2, real_width, h);
689         if (rect.width() <= 4)
690                 return;
691
692         p.setPen(Qt::black);
693
694         // Try to find an annotation that will fit
695         QString best_annotation;
696         int best_width = 0;
697
698         for (const QString &a : annotations) {
699                 const int w = p.boundingRect(QRectF(), 0, a).width();
700                 if (w <= rect.width() && w > best_width)
701                         best_annotation = a, best_width = w;
702         }
703
704         if (best_annotation.isEmpty())
705                 best_annotation = annotations.back();
706
707         // If not ellide the last in the list
708         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
709                 best_annotation, Qt::ElideRight, rect.width()));
710 }
711
712 void DecodeTrace::draw_error(QPainter &p, const QString &message,
713         const ViewItemPaintParams &pp)
714 {
715         const int y = get_visual_y();
716
717         double samples_per_pixel, pixels_offset;
718         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
719
720         p.setPen(ErrorBgColor.darker());
721         p.setBrush(ErrorBgColor);
722
723         const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
724
725         const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
726         const qreal r = text_rect.height() / 4;
727
728         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
729
730         p.setPen(Qt::black);
731         p.drawText(text_rect, message);
732 }
733
734 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left, int right) const
735 {
736         using namespace pv::data;
737         using pv::data::decode::Decoder;
738
739         double samples_per_pixel, pixels_offset;
740
741         const int64_t sample_count = decode_signal_->get_working_sample_count(current_segment_);
742         if (sample_count == 0)
743                 return;
744
745         const int64_t samples_decoded = decode_signal_->get_decoded_sample_count(current_segment_, true);
746         if (sample_count == samples_decoded)
747                 return;
748
749         const int y = get_visual_y();
750
751         tie(pixels_offset, samples_per_pixel) = get_pixels_offset_samples_per_pixel();
752
753         const double start = max(samples_decoded /
754                 samples_per_pixel - pixels_offset, left - 1.0);
755         const double end = min(sample_count / samples_per_pixel -
756                 pixels_offset, right + 1.0);
757         const QRectF no_decode_rect(start, y - (h / 2) - 0.5, end - start, h);
758
759         p.setPen(QPen(Qt::NoPen));
760         p.setBrush(Qt::white);
761         p.drawRect(no_decode_rect);
762
763         p.setPen(NoDecodeColor);
764         p.setBrush(QBrush(NoDecodeColor, Qt::Dense6Pattern));
765         p.drawRect(no_decode_rect);
766 }
767
768 pair<double, double> DecodeTrace::get_pixels_offset_samples_per_pixel() const
769 {
770         assert(owner_);
771
772         const View *view = owner_->view();
773         assert(view);
774
775         const double scale = view->scale();
776         assert(scale > 0);
777
778         const double pixels_offset =
779                 ((view->offset() - decode_signal_->start_time()) / scale).convert_to<double>();
780
781         double samplerate = decode_signal_->samplerate();
782
783         // Show sample rate as 1Hz when it is unknown
784         if (samplerate == 0.0)
785                 samplerate = 1.0;
786
787         return make_pair(pixels_offset, samplerate * scale);
788 }
789
790 pair<uint64_t, uint64_t> DecodeTrace::get_view_sample_range(
791         int x_start, int x_end) const
792 {
793         double samples_per_pixel, pixels_offset;
794         tie(pixels_offset, samples_per_pixel) =
795                 get_pixels_offset_samples_per_pixel();
796
797         const uint64_t start = (uint64_t)max(
798                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
799         const uint64_t end = (uint64_t)max(
800                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
801
802         return make_pair(start, end);
803 }
804
805 QColor DecodeTrace::get_row_color(int row_index) const
806 {
807         // For each row color, use the base color hue and add an offset that's
808         // not a dividend of 360
809
810         QColor color;
811         const int h = (base_->color().toHsv().hue() + 20 * row_index) % 360;
812         const int s = DECODETRACE_COLOR_SATURATION;
813         const int v = DECODETRACE_COLOR_VALUE;
814         color.setHsl(h, s, v);
815
816         return color;
817 }
818
819 QColor DecodeTrace::get_annotation_color(QColor row_color, int annotation_index) const
820 {
821         // For each row color, use the base color hue and add an offset that's
822         // not a dividend of 360 and not a multiple of the row offset
823
824         QColor color(row_color);
825         const int h = (color.toHsv().hue() + 55 * annotation_index) % 360;
826         const int s = DECODETRACE_COLOR_SATURATION;
827         const int v = DECODETRACE_COLOR_VALUE;
828         color.setHsl(h, s, v);
829
830         return color;
831 }
832
833 unsigned int DecodeTrace::get_row_y(const RowData* row) const
834 {
835         assert(row);
836
837         unsigned int y = get_visual_y();
838
839         for (const RowData& r : rows_) {
840                 if (!r.currently_visible)
841                         continue;
842
843                 if (row->decode_row == r.decode_row)
844                         break;
845                 else
846                         y += r.height;
847         }
848
849         return y;
850 }
851
852 RowData* DecodeTrace::get_row_at_point(const QPoint &point)
853 {
854         int y = get_visual_y() - (default_row_height_ / 2);
855
856         for (RowData& r : rows_) {
857                 if (!r.currently_visible)
858                         continue;
859
860                 if ((point.y() >= y) && (point.y() < (int)(y + r.height)))
861                         return &r;
862
863                 y += r.height;
864         }
865
866         return nullptr;
867 }
868
869 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
870 {
871         using namespace pv::data::decode;
872
873         if (!enabled())
874                 return QString();
875
876         const pair<uint64_t, uint64_t> sample_range =
877                 get_view_sample_range(point.x(), point.x() + 1);
878         const RowData* r = get_row_at_point(point);
879
880         if (!r)
881                 return QString();
882
883         if (point.y() > (int)(get_row_y(r) + (annotation_height_ / 2)))
884                 return QString();
885
886         vector<Annotation> annotations;
887
888         decode_signal_->get_annotation_subset(annotations, r->decode_row,
889                 current_segment_, sample_range.first, sample_range.second);
890
891         return (annotations.empty()) ?
892                 QString() : annotations[0].annotations().front();
893 }
894
895 void DecodeTrace::hover_point_changed(const QPoint &hp)
896 {
897         Trace::hover_point_changed(hp);
898
899         assert(owner_);
900
901         RowData* hover_row = get_row_at_point(hp);
902
903         // Row expansion marker handling
904         for (RowData& r : rows_)
905                 r.expand_marker_highlighted = false;
906
907         if (hover_row) {
908                 int row_y = get_row_y(hover_row);
909                 if ((hp.x() > 0) && (hp.x() < ArrowSize) &&
910                         (hp.y() > (int)(row_y - ArrowSize)) && (hp.y() < (int)(row_y + ArrowSize)))
911                         hover_row->expand_marker_highlighted = true;
912         }
913
914         // Tooltip handling
915         if (hp.x() > 0) {
916                 QString ann = get_annotation_at_point(hp);
917
918                 if (!ann.isEmpty()) {
919                         QFontMetrics m(QToolTip::font());
920                         const QRect text_size = m.boundingRect(QRect(), 0, ann);
921
922                         // This is OS-specific and unfortunately we can't query it, so
923                         // use an approximation to at least try to minimize the error.
924                         const int padding = default_row_height_ + 8;
925
926                         // Make sure the tool tip doesn't overlap with the mouse cursor.
927                         // If it did, the tool tip would constantly hide and re-appear.
928                         // We also push it up by one row so that it appears above the
929                         // decode trace, not below.
930                         QPoint p = hp;
931                         p.setX(hp.x() - (text_size.width() / 2) - padding);
932
933                         p.setY(get_row_y(hover_row) - default_row_height_ -
934                                 text_size.height() - padding);
935
936                         const View *const view = owner_->view();
937                         assert(view);
938                         QToolTip::showText(view->viewport()->mapToGlobal(p), ann);
939
940                 } else
941                         QToolTip::hideText();
942
943         } else
944                 QToolTip::hideText();
945 }
946
947 void DecodeTrace::create_decoder_form(int index,
948         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
949         QFormLayout *form)
950 {
951         GlobalSettings settings;
952
953         assert(dec);
954         const srd_decoder *const decoder = dec->decoder();
955         assert(decoder);
956
957         const bool decoder_deletable = index > 0;
958
959         pv::widgets::DecoderGroupBox *const group =
960                 new pv::widgets::DecoderGroupBox(
961                         QString::fromUtf8(decoder->name),
962                         tr("%1:\n%2").arg(QString::fromUtf8(decoder->longname),
963                                 QString::fromUtf8(decoder->desc)),
964                         nullptr, decoder_deletable);
965         group->set_decoder_visible(dec->shown());
966
967         if (decoder_deletable) {
968                 delete_mapper_.setMapping(group, index);
969                 connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
970         }
971
972         show_hide_mapper_.setMapping(group, index);
973         connect(group, SIGNAL(show_hide_decoder()),
974                 &show_hide_mapper_, SLOT(map()));
975
976         QFormLayout *const decoder_form = new QFormLayout;
977         group->add_layout(decoder_form);
978
979         const vector<DecodeChannel> channels = decode_signal_->get_channels();
980
981         // Add the channels
982         for (const DecodeChannel& ch : channels) {
983                 // Ignore channels not part of the decoder we create the form for
984                 if (ch.decoder_ != dec)
985                         continue;
986
987                 QComboBox *const combo = create_channel_selector(parent, &ch);
988                 QComboBox *const combo_init_state = create_channel_selector_init_state(parent, &ch);
989
990                 channel_id_map_[combo] = ch.id;
991                 init_state_map_[combo_init_state] = ch.id;
992
993                 connect(combo, SIGNAL(currentIndexChanged(int)),
994                         this, SLOT(on_channel_selected(int)));
995                 connect(combo_init_state, SIGNAL(currentIndexChanged(int)),
996                         this, SLOT(on_init_state_changed(int)));
997
998                 QHBoxLayout *const hlayout = new QHBoxLayout;
999                 hlayout->addWidget(combo);
1000                 hlayout->addWidget(combo_init_state);
1001
1002                 if (!settings.value(GlobalSettings::Key_Dec_InitialStateConfigurable).toBool())
1003                         combo_init_state->hide();
1004
1005                 const QString required_flag = ch.is_optional ? QString() : QString("*");
1006                 decoder_form->addRow(tr("<b>%1</b> (%2) %3")
1007                         .arg(ch.name, ch.desc, required_flag), hlayout);
1008         }
1009
1010         // Add the options
1011         shared_ptr<binding::Decoder> binding(
1012                 new binding::Decoder(decode_signal_, dec));
1013         binding->add_properties_to_form(decoder_form, true);
1014
1015         bindings_.push_back(binding);
1016
1017         form->addRow(group);
1018         decoder_forms_.push_back(group);
1019 }
1020
1021 QComboBox* DecodeTrace::create_channel_selector(QWidget *parent, const DecodeChannel *ch)
1022 {
1023         const auto sigs(session_.signalbases());
1024
1025         // Sort signals in natural order
1026         vector< shared_ptr<data::SignalBase> > sig_list(sigs.begin(), sigs.end());
1027         sort(sig_list.begin(), sig_list.end(),
1028                 [](const shared_ptr<data::SignalBase> &a,
1029                 const shared_ptr<data::SignalBase> &b) {
1030                         return strnatcasecmp(a->name().toStdString(),
1031                                 b->name().toStdString()) < 0; });
1032
1033         QComboBox *selector = new QComboBox(parent);
1034
1035         selector->addItem("-", qVariantFromValue((void*)nullptr));
1036
1037         if (!ch->assigned_signal)
1038                 selector->setCurrentIndex(0);
1039
1040         for (const shared_ptr<data::SignalBase> &b : sig_list) {
1041                 assert(b);
1042                 if (b->logic_data() && b->enabled()) {
1043                         selector->addItem(b->name(),
1044                                 qVariantFromValue((void*)b.get()));
1045
1046                         if (ch->assigned_signal == b.get())
1047                                 selector->setCurrentIndex(selector->count() - 1);
1048                 }
1049         }
1050
1051         return selector;
1052 }
1053
1054 QComboBox* DecodeTrace::create_channel_selector_init_state(QWidget *parent,
1055         const DecodeChannel *ch)
1056 {
1057         QComboBox *selector = new QComboBox(parent);
1058
1059         selector->addItem("0", qVariantFromValue((int)SRD_INITIAL_PIN_LOW));
1060         selector->addItem("1", qVariantFromValue((int)SRD_INITIAL_PIN_HIGH));
1061         selector->addItem("X", qVariantFromValue((int)SRD_INITIAL_PIN_SAME_AS_SAMPLE0));
1062
1063         selector->setCurrentIndex(ch->initial_pin_state);
1064
1065         selector->setToolTip("Initial (assumed) pin value before the first sample");
1066
1067         return selector;
1068 }
1069
1070 void DecodeTrace::export_annotations(vector<Annotation> *annotations) const
1071 {
1072         using namespace pv::data::decode;
1073
1074         GlobalSettings settings;
1075         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
1076
1077         const QString file_name = QFileDialog::getSaveFileName(
1078                 owner_->view(), tr("Export annotations"), dir, tr("Text Files (*.txt);;All Files (*)"));
1079
1080         if (file_name.isEmpty())
1081                 return;
1082
1083         QString format = settings.value(GlobalSettings::Key_Dec_ExportFormat).toString();
1084         const QString quote = format.contains("%q") ? "\"" : "";
1085         format = format.remove("%q");
1086
1087         QFile file(file_name);
1088         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
1089                 QTextStream out_stream(&file);
1090
1091                 for (Annotation &ann : *annotations) {
1092                         const QString sample_range = QString("%1-%2") \
1093                                 .arg(QString::number(ann.start_sample()), QString::number(ann.end_sample()));
1094
1095                         const QString class_name = quote + ann.row()->class_name() + quote;
1096
1097                         QString all_ann_text;
1098                         for (const QString &s : ann.annotations())
1099                                 all_ann_text = all_ann_text + quote + s + quote + ",";
1100                         all_ann_text.chop(1);
1101
1102                         const QString first_ann_text = quote + ann.annotations().front() + quote;
1103
1104                         QString out_text = format;
1105                         out_text = out_text.replace("%s", sample_range);
1106                         out_text = out_text.replace("%d",
1107                                 quote + QString::fromUtf8(ann.row()->decoder()->name()) + quote);
1108                         out_text = out_text.replace("%c", class_name);
1109                         out_text = out_text.replace("%1", first_ann_text);
1110                         out_text = out_text.replace("%a", all_ann_text);
1111                         out_stream << out_text << '\n';
1112                 }
1113
1114                 if (out_stream.status() == QTextStream::Ok)
1115                         return;
1116         }
1117
1118         QMessageBox msg(owner_->view());
1119         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
1120         msg.setStandardButtons(QMessageBox::Ok);
1121         msg.setIcon(QMessageBox::Warning);
1122         msg.exec();
1123 }
1124
1125 void DecodeTrace::update_rows()
1126 {
1127         lock_guard<mutex> lock(row_modification_mutex_);
1128
1129         QFontMetrics m(QApplication::font());
1130
1131         for (RowData& r : rows_)
1132                 r.exists = false;
1133
1134         for (const Row& decode_row : decode_signal_->get_rows()) {
1135                 // Find row in our list
1136                 auto r_it = find_if(rows_.begin(), rows_.end(),
1137                         [&](RowData& r){ return r.decode_row == decode_row; });
1138
1139                 RowData* r = nullptr;
1140                 if (r_it == rows_.end()) {
1141                         // Row doesn't exist yet, create and append it
1142                         RowData nr;
1143                         nr.decode_row = decode_row;
1144                         nr.height = default_row_height_;
1145                         nr.currently_visible = false;
1146                         nr.expand_marker_highlighted = false;
1147                         nr.expanded = false;
1148
1149                         rows_.push_back(nr);
1150                         r = &rows_.back();
1151                 } else
1152                         r = &(*r_it);
1153
1154                 r->exists = true;
1155
1156                 const int w = m.boundingRect(r->decode_row.title()).width() + RowTitleMargin;
1157                 r->title_width = w;
1158         }
1159
1160         // Remove any rows that no longer exist, obeying that iterators are invalidated
1161         bool any_exists;
1162         do {
1163                 any_exists = false;
1164
1165                 for (unsigned int i = 0; i < rows_.size(); i++)
1166                         if (!rows_[i].exists) {
1167                                 rows_.erase(rows_.begin() + i);
1168                                 any_exists = true;
1169                                 break;
1170                         }
1171         } while (any_exists);
1172 }
1173
1174 void DecodeTrace::on_setting_changed(const QString &key, const QVariant &value)
1175 {
1176         Trace::on_setting_changed(key, value);
1177
1178         if (key == GlobalSettings::Key_Dec_AlwaysShowAllRows) {
1179                 max_visible_rows_ = 0;
1180                 always_show_all_rows_ = value.toBool();
1181         }
1182 }
1183
1184 void DecodeTrace::on_new_annotations()
1185 {
1186         if (!delayed_trace_updater_.isActive())
1187                 delayed_trace_updater_.start();
1188 }
1189
1190 void DecodeTrace::on_delayed_trace_update()
1191 {
1192         if (owner_)
1193                 owner_->row_item_appearance_changed(false, true);
1194 }
1195
1196 void DecodeTrace::on_decode_reset()
1197 {
1198         max_visible_rows_ = 0;
1199         update_rows();
1200
1201         if (owner_)
1202                 owner_->row_item_appearance_changed(false, true);
1203 }
1204
1205 void DecodeTrace::on_decode_finished()
1206 {
1207         if (owner_)
1208                 owner_->row_item_appearance_changed(false, true);
1209 }
1210
1211 void DecodeTrace::on_pause_decode()
1212 {
1213         if (decode_signal_->is_paused())
1214                 decode_signal_->resume_decode();
1215         else
1216                 decode_signal_->pause_decode();
1217 }
1218
1219 void DecodeTrace::delete_pressed()
1220 {
1221         on_delete();
1222 }
1223
1224 void DecodeTrace::on_delete()
1225 {
1226         session_.remove_decode_signal(decode_signal_);
1227 }
1228
1229 void DecodeTrace::on_channel_selected(int)
1230 {
1231         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1232
1233         // Determine signal that was selected
1234         const data::SignalBase *signal =
1235                 (data::SignalBase*)cb->itemData(cb->currentIndex()).value<void*>();
1236
1237         // Determine decode channel ID this combo box is the channel selector for
1238         const uint16_t id = channel_id_map_.at(cb);
1239
1240         decode_signal_->assign_signal(id, signal);
1241 }
1242
1243 void DecodeTrace::on_channels_updated()
1244 {
1245         if (owner_)
1246                 owner_->row_item_appearance_changed(false, true);
1247 }
1248
1249 void DecodeTrace::on_init_state_changed(int)
1250 {
1251         QComboBox *cb = qobject_cast<QComboBox*>(QObject::sender());
1252
1253         // Determine inital pin state that was selected
1254         int init_state = cb->itemData(cb->currentIndex()).value<int>();
1255
1256         // Determine decode channel ID this combo box is the channel selector for
1257         const uint16_t id = init_state_map_.at(cb);
1258
1259         decode_signal_->set_initial_pin_state(id, init_state);
1260 }
1261
1262 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
1263 {
1264         decode_signal_->stack_decoder(decoder);
1265         update_rows();
1266
1267         create_popup_form();
1268 }
1269
1270 void DecodeTrace::on_delete_decoder(int index)
1271 {
1272         decode_signal_->remove_decoder(index);
1273         update_rows();
1274
1275         // Force re-calculation of the trace height
1276         max_visible_rows_ = 0;
1277         owner_->extents_changed(false, true);
1278
1279         create_popup_form();
1280 }
1281
1282 void DecodeTrace::on_show_hide_decoder(int index)
1283 {
1284         const bool state = decode_signal_->toggle_decoder_visibility(index);
1285
1286         assert(index < (int)decoder_forms_.size());
1287         decoder_forms_[index]->set_decoder_visible(state);
1288
1289         if (!state) {
1290                 // Force re-calculation of the trace height, see paint_mid()
1291                 max_visible_rows_ = 0;
1292                 owner_->extents_changed(false, true);
1293         }
1294
1295         if (owner_)
1296                 owner_->row_item_appearance_changed(false, true);
1297 }
1298
1299 void DecodeTrace::on_copy_annotation_to_clipboard()
1300 {
1301         using namespace pv::data::decode;
1302
1303         if (!selected_row_)
1304                 return;
1305
1306         vector<Annotation> *annotations = new vector<Annotation>();
1307
1308         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1309                 current_segment_, selected_sample_range_.first, selected_sample_range_.first);
1310
1311         if (annotations->empty())
1312                 return;
1313
1314         QClipboard *clipboard = QApplication::clipboard();
1315         clipboard->setText(annotations->front().annotations().front(), QClipboard::Clipboard);
1316
1317         if (clipboard->supportsSelection())
1318                 clipboard->setText(annotations->front().annotations().front(), QClipboard::Selection);
1319
1320         delete annotations;
1321 }
1322
1323 void DecodeTrace::on_export_row()
1324 {
1325         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1326         on_export_row_from_here();
1327 }
1328
1329 void DecodeTrace::on_export_all_rows()
1330 {
1331         selected_sample_range_ = make_pair(0, numeric_limits<uint64_t>::max());
1332         on_export_all_rows_from_here();
1333 }
1334
1335 void DecodeTrace::on_export_row_with_cursor()
1336 {
1337         const View *view = owner_->view();
1338         assert(view);
1339
1340         if (!view->cursors()->enabled())
1341                 return;
1342
1343         const double samplerate = session_.get_samplerate();
1344
1345         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1346         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1347
1348         const uint64_t start_sample = (uint64_t)max(
1349                 0.0, start_time.convert_to<double>() * samplerate);
1350         const uint64_t end_sample = (uint64_t)max(
1351                 0.0, end_time.convert_to<double>() * samplerate);
1352
1353         // Are both cursors negative and thus were clamped to 0?
1354         if ((start_sample == 0) && (end_sample == 0))
1355                 return;
1356
1357         selected_sample_range_ = make_pair(start_sample, end_sample);
1358         on_export_row_from_here();
1359 }
1360
1361 void DecodeTrace::on_export_all_rows_with_cursor()
1362 {
1363         const View *view = owner_->view();
1364         assert(view);
1365
1366         if (!view->cursors()->enabled())
1367                 return;
1368
1369         const double samplerate = session_.get_samplerate();
1370
1371         const pv::util::Timestamp& start_time = view->cursors()->first()->time();
1372         const pv::util::Timestamp& end_time = view->cursors()->second()->time();
1373
1374         const uint64_t start_sample = (uint64_t)max(
1375                 0.0, start_time.convert_to<double>() * samplerate);
1376         const uint64_t end_sample = (uint64_t)max(
1377                 0.0, end_time.convert_to<double>() * samplerate);
1378
1379         // Are both cursors negative and thus were clamped to 0?
1380         if ((start_sample == 0) && (end_sample == 0))
1381                 return;
1382
1383         selected_sample_range_ = make_pair(start_sample, end_sample);
1384         on_export_all_rows_from_here();
1385 }
1386
1387 void DecodeTrace::on_export_row_from_here()
1388 {
1389         using namespace pv::data::decode;
1390
1391         if (!selected_row_)
1392                 return;
1393
1394         vector<Annotation> *annotations = new vector<Annotation>();
1395
1396         decode_signal_->get_annotation_subset(*annotations, *selected_row_,
1397                 current_segment_, selected_sample_range_.first, selected_sample_range_.second);
1398
1399         if (annotations->empty())
1400                 return;
1401
1402         export_annotations(annotations);
1403         delete annotations;
1404 }
1405
1406 void DecodeTrace::on_export_all_rows_from_here()
1407 {
1408         using namespace pv::data::decode;
1409
1410         vector<Annotation> *annotations = new vector<Annotation>();
1411
1412         decode_signal_->get_annotation_subset(*annotations, current_segment_,
1413                         selected_sample_range_.first, selected_sample_range_.second);
1414
1415         if (!annotations->empty())
1416                 export_annotations(annotations);
1417
1418         delete annotations;
1419 }
1420
1421 } // namespace trace
1422 } // namespace views
1423 } // namespace pv