2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <libsigrokdecode/libsigrokdecode.h>
30 #include <QMouseEvent>
33 #include "cursorheader.h"
34 #include "decodetrace.h"
41 #include "pv/sigsession.h"
42 #include "pv/data/logic.h"
43 #include "pv/data/logicsnapshot.h"
45 using pv::data::SignalData;
53 using std::shared_ptr;
60 const double View::MaxScale = 1e9;
61 const double View::MinScale = 1e-15;
63 const int View::MaxScrollValue = INT_MAX / 2;
65 const int View::SignalHeight = 30;
66 const int View::SignalMargin = 10;
67 const int View::SignalSnapGridSize = 10;
69 const QColor View::CursorAreaColour(220, 231, 243);
71 const QSizeF View::LabelPadding(4, 0);
73 View::View(SigSession &session, QWidget *parent) :
74 QAbstractScrollArea(parent),
76 _viewport(new Viewport(*this)),
77 _ruler(new Ruler(*this)),
78 _cursorheader(new CursorHeader(*this)),
79 _header(new Header(*this)),
83 _updating_scroll(false),
88 connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
89 this, SLOT(h_scroll_value_changed(int)));
90 connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
91 this, SLOT(v_scroll_value_changed(int)));
93 connect(&_session, SIGNAL(signals_changed()),
94 this, SLOT(signals_changed()));
95 connect(&_session, SIGNAL(capture_state_changed(int)),
96 this, SLOT(data_updated()));
97 connect(&_session, SIGNAL(data_received()),
98 this, SLOT(data_updated()));
99 connect(&_session, SIGNAL(frame_ended()),
100 this, SLOT(data_updated()));
102 connect(_cursors.first().get(), SIGNAL(time_changed()),
103 this, SLOT(marker_time_changed()));
104 connect(_cursors.second().get(), SIGNAL(time_changed()),
105 this, SLOT(marker_time_changed()));
107 connect(_header, SIGNAL(geometry_updated()),
108 this, SLOT(on_geometry_updated()));
109 connect(_header, SIGNAL(signals_moved()),
110 this, SLOT(on_signals_moved()));
112 connect(_header, SIGNAL(selection_changed()),
113 _cursorheader, SLOT(clear_selection()));
114 connect(_cursorheader, SIGNAL(selection_changed()),
115 _header, SLOT(clear_selection()));
117 connect(_header, SIGNAL(selection_changed()),
118 this, SIGNAL(selection_changed()));
119 connect(_cursorheader, SIGNAL(selection_changed()),
120 this, SIGNAL(selection_changed()));
122 setViewport(_viewport);
124 _viewport->installEventFilter(this);
125 _ruler->installEventFilter(this);
126 _cursorheader->installEventFilter(this);
127 _header->installEventFilter(this);
129 // Trigger the initial event manually. The default device has signals
130 // which were created before this object came into being
133 // make sure the transparent widgets are on the top
134 _cursorheader->raise();
138 SigSession& View::session()
143 const SigSession& View::session() const
148 double View::scale() const
153 double View::offset() const
158 int View::v_offset() const
163 void View::zoom(double steps)
165 zoom(steps, _viewport->width() / 2);
168 void View::zoom(double steps, int offset)
170 set_zoom(_scale * pow(3.0/2.0, -steps), offset);
173 void View::zoom_fit()
175 const pair<double, double> extents = get_time_extents();
176 const double delta = extents.second - extents.first;
181 const int w = _viewport->width();
185 const double scale = max(min(delta / w, MaxScale), MinScale);
186 set_scale_offset(scale, extents.first);
189 void View::zoom_one_to_one()
191 using pv::data::SignalData;
193 const vector< shared_ptr<Signal> > sigs(
194 session().get_signals());
196 // Make a set of all the visible data objects
197 set< shared_ptr<SignalData> > visible_data = get_visible_data();
198 if (visible_data.empty())
201 double samplerate = 0.0;
202 for (const shared_ptr<SignalData> d : visible_data) {
204 samplerate = max(samplerate, d->samplerate());
207 if (samplerate == 0.0)
211 const int w = _viewport->width();
215 set_zoom(1.0 / samplerate, w / 2);
218 void View::set_scale_offset(double scale, double offset)
225 _cursorheader->update();
227 scale_offset_changed();
230 vector< shared_ptr<Trace> > View::get_traces() const
232 const vector< shared_ptr<Signal> > sigs(
233 session().get_signals());
235 const vector< shared_ptr<DecodeTrace> > decode_sigs(
236 session().get_decode_signals());
237 vector< shared_ptr<Trace> > traces(
238 sigs.size() + decode_sigs.size());
240 vector< shared_ptr<Trace> > traces(sigs.size());
243 auto i = traces.begin();
244 i = copy(sigs.begin(), sigs.end(), i);
246 i = copy(decode_sigs.begin(), decode_sigs.end(), i);
249 stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets);
253 list<weak_ptr<SelectableItem> > View::selected_items() const
255 list<weak_ptr<SelectableItem> > items;
257 // List the selected signals
258 const vector< shared_ptr<Trace> > traces(get_traces());
259 for (shared_ptr<Trace> t : traces) {
265 // List the selected cursors
266 if (_cursors.first()->selected())
267 items.push_back(_cursors.first());
268 if (_cursors.second()->selected())
269 items.push_back(_cursors.second());
274 set< shared_ptr<SignalData> > View::get_visible_data() const
276 const vector< shared_ptr<Signal> > sigs(
277 session().get_signals());
279 // Make a set of all the visible data objects
280 set< shared_ptr<SignalData> > visible_data;
281 for (const shared_ptr<Signal> sig : sigs)
283 visible_data.insert(sig->data());
288 pair<double, double> View::get_time_extents() const
290 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
291 if (visible_data.empty())
292 return make_pair(0.0, 0.0);
294 double left_time = DBL_MAX, right_time = DBL_MIN;
295 for (const shared_ptr<SignalData> d : visible_data)
297 const double start_time = d->get_start_time();
298 double samplerate = d->samplerate();
299 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
301 left_time = min(left_time, start_time);
302 right_time = max(right_time, start_time +
303 d->get_max_sample_count() / samplerate);
306 assert(left_time < right_time);
307 return make_pair(left_time, right_time);
310 bool View::cursors_shown() const
312 return _show_cursors;
315 void View::show_cursors(bool show)
317 _show_cursors = show;
318 _cursorheader->update();
322 void View::centre_cursors()
324 const double time_width = _scale * _viewport->width();
325 _cursors.first()->set_time(_offset + time_width * 0.4);
326 _cursors.second()->set_time(_offset + time_width * 0.6);
327 _cursorheader->update();
331 CursorPair& View::cursors()
336 const CursorPair& View::cursors() const
341 const QPoint& View::hover_point() const
346 void View::normalize_layout()
348 const vector< shared_ptr<Trace> > traces(get_traces());
351 for (const shared_ptr<Trace> t : traces)
352 v_min = min(t->get_v_offset(), v_min);
354 const int delta = -min(v_min, 0);
355 for (shared_ptr<Trace> t : traces)
356 t->set_v_offset(t->get_v_offset() + delta);
358 verticalScrollBar()->setSliderPosition(_v_offset + delta);
359 v_scroll_value_changed(verticalScrollBar()->sliderPosition());
362 void View::update_viewport()
368 void View::get_scroll_layout(double &length, double &offset) const
370 const pair<double, double> extents = get_time_extents();
371 length = (extents.second - extents.first) / _scale;
372 offset = _offset / _scale;
375 void View::set_zoom(double scale, int offset)
377 const double cursor_offset = _offset + _scale * offset;
378 const double new_scale = max(min(scale, MaxScale), MinScale);
379 const double new_offset = cursor_offset - new_scale * offset;
380 set_scale_offset(new_scale, new_offset);
383 void View::update_scroll()
387 const QSize areaSize = _viewport->size();
389 // Set the horizontal scroll bar
390 double length = 0, offset = 0;
391 get_scroll_layout(length, offset);
392 length = max(length - areaSize.width(), 0.0);
394 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
396 _updating_scroll = true;
398 if (length < MaxScrollValue) {
399 horizontalScrollBar()->setRange(0, length);
400 horizontalScrollBar()->setSliderPosition(offset);
402 horizontalScrollBar()->setRange(0, MaxScrollValue);
403 horizontalScrollBar()->setSliderPosition(
404 _offset * MaxScrollValue / (_scale * length));
407 _updating_scroll = false;
409 // Set the vertical scrollbar
410 verticalScrollBar()->setPageStep(areaSize.height());
411 verticalScrollBar()->setRange(0,
412 _viewport->get_total_height() + SignalMargin -
416 void View::update_layout()
419 _header->sizeHint().width() - pv::view::Header::BaselineOffset,
420 _ruler->sizeHint().height(), 0, 0);
421 _ruler->setGeometry(_viewport->x(), 0,
422 _viewport->width(), _viewport->y());
423 _cursorheader->setGeometry(
425 _ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
426 _viewport->width(), _cursorheader->sizeHint().height());
427 _header->setGeometry(0, _viewport->y(),
428 _header->sizeHint().width(), _viewport->height());
432 bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a,
433 const shared_ptr<Trace> &b)
437 return a->get_v_offset() < b->get_v_offset();
440 bool View::eventFilter(QObject *object, QEvent *event)
442 const QEvent::Type type = event->type();
443 if (type == QEvent::MouseMove) {
445 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
446 if (object == _viewport)
447 _hover_point = mouse_event->pos();
448 else if (object == _ruler || object == _cursorheader)
449 _hover_point = QPoint(mouse_event->x(), 0);
450 else if (object == _header)
451 _hover_point = QPoint(0, mouse_event->y());
453 _hover_point = QPoint(-1, -1);
455 hover_point_changed();
457 } else if (type == QEvent::Leave) {
458 _hover_point = QPoint(-1, -1);
459 hover_point_changed();
462 return QObject::eventFilter(object, event);
465 bool View::viewportEvent(QEvent *e)
469 case QEvent::MouseButtonPress:
470 case QEvent::MouseButtonRelease:
471 case QEvent::MouseButtonDblClick:
472 case QEvent::MouseMove:
474 case QEvent::TouchBegin:
475 case QEvent::TouchUpdate:
476 case QEvent::TouchEnd:
480 return QAbstractScrollArea::viewportEvent(e);
484 void View::resizeEvent(QResizeEvent*)
489 void View::h_scroll_value_changed(int value)
491 if (_updating_scroll)
494 const int range = horizontalScrollBar()->maximum();
495 if (range < MaxScrollValue)
496 _offset = _scale * value;
498 double length = 0, offset;
499 get_scroll_layout(length, offset);
500 _offset = _scale * length * value / MaxScrollValue;
504 _cursorheader->update();
508 void View::v_scroll_value_changed(int value)
515 void View::signals_changed()
517 int offset = SignalMargin + SignalHeight;
518 const vector< shared_ptr<Trace> > traces(get_traces());
519 for (shared_ptr<Trace> t : traces) {
521 t->set_v_offset(offset);
522 offset += SignalHeight + 2 * SignalMargin;
529 void View::data_updated()
531 // Update the scroll bars
538 void View::marker_time_changed()
540 _cursorheader->update();
544 void View::on_signals_moved()
550 void View::on_geometry_updated()