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>
29 #include <boost/foreach.hpp>
32 #include <QMouseEvent>
35 #include "decodetrace.h"
42 #include "pv/sigsession.h"
43 #include "pv/data/logic.h"
44 #include "pv/data/logicsnapshot.h"
46 using boost::shared_ptr;
47 using boost::weak_ptr;
48 using pv::data::SignalData;
61 const double View::MaxScale = 1e9;
62 const double View::MinScale = 1e-15;
64 const int View::MaxScrollValue = INT_MAX / 2;
66 const int View::SignalHeight = 30;
67 const int View::SignalMargin = 10;
68 const int View::SignalSnapGridSize = 10;
70 const QColor View::CursorAreaColour(220, 231, 243);
72 const QSizeF View::LabelPadding(4, 0);
74 View::View(SigSession &session, QWidget *parent) :
75 QAbstractScrollArea(parent),
77 _viewport(new Viewport(*this)),
78 _ruler(new Ruler(*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(data_received()),
96 this, SLOT(data_updated()));
97 connect(&_session, SIGNAL(frame_ended()),
98 this, SLOT(data_updated()));
100 connect(_cursors.first().get(), SIGNAL(time_changed()),
101 this, SLOT(marker_time_changed()));
102 connect(_cursors.second().get(), SIGNAL(time_changed()),
103 this, SLOT(marker_time_changed()));
105 connect(_header, SIGNAL(geometry_updated()),
106 this, SLOT(on_geometry_updated()));
107 connect(_header, SIGNAL(signals_moved()),
108 this, SLOT(on_signals_moved()));
110 connect(_header, SIGNAL(selection_changed()),
111 _ruler, SLOT(clear_selection()));
112 connect(_ruler, SIGNAL(selection_changed()),
113 _header, SLOT(clear_selection()));
115 connect(_header, SIGNAL(selection_changed()),
116 this, SIGNAL(selection_changed()));
117 connect(_ruler, SIGNAL(selection_changed()),
118 this, SIGNAL(selection_changed()));
120 setViewport(_viewport);
122 _viewport->installEventFilter(this);
123 _ruler->installEventFilter(this);
124 _header->installEventFilter(this);
129 SigSession& View::session()
134 const SigSession& View::session() const
139 double View::scale() const
144 double View::offset() const
149 int View::v_offset() const
154 void View::zoom(double steps)
156 zoom(steps, _viewport->width() / 2);
159 void View::zoom(double steps, int offset)
161 set_zoom(_scale * pow(3.0/2.0, -steps), offset);
164 void View::zoom_fit()
166 const pair<double, double> extents = get_time_extents();
167 const double delta = extents.second - extents.first;
172 const int w = _viewport->width();
176 const double scale = max(min(delta / w, MaxScale), MinScale);
177 set_scale_offset(scale, extents.first);
180 void View::zoom_one_to_one()
182 using pv::data::SignalData;
184 const vector< shared_ptr<Signal> > sigs(
185 session().get_signals());
187 // Make a set of all the visible data objects
188 set< shared_ptr<SignalData> > visible_data = get_visible_data();
189 if (visible_data.empty())
192 double samplerate = 0.0;
193 BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data) {
195 samplerate = max(samplerate, d->samplerate());
198 if (samplerate == 0.0)
202 const int w = _viewport->width();
206 set_zoom(1.0 / samplerate, w / 2);
209 void View::set_scale_offset(double scale, double offset)
217 scale_offset_changed();
220 vector< shared_ptr<Trace> > View::get_traces() const
222 const vector< shared_ptr<Signal> > sigs(
223 session().get_signals());
225 const vector< shared_ptr<DecodeTrace> > decode_sigs(
226 session().get_decode_signals());
227 vector< shared_ptr<Trace> > traces(
228 sigs.size() + decode_sigs.size());
230 vector< shared_ptr<Trace> > traces(sigs.size());
233 vector< shared_ptr<Trace> >::iterator i = traces.begin();
234 i = copy(sigs.begin(), sigs.end(), i);
236 i = copy(decode_sigs.begin(), decode_sigs.end(), i);
239 stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets);
243 list<weak_ptr<SelectableItem> > View::selected_items() const
245 list<weak_ptr<SelectableItem> > items;
247 // List the selected signals
248 const vector< shared_ptr<Trace> > traces(get_traces());
249 BOOST_FOREACH (shared_ptr<Trace> t, traces) {
255 // List the selected cursors
256 if (_cursors.first()->selected())
257 items.push_back(_cursors.first());
258 if (_cursors.second()->selected())
259 items.push_back(_cursors.second());
264 set< shared_ptr<SignalData> > View::get_visible_data() const
266 const vector< shared_ptr<Signal> > sigs(
267 session().get_signals());
269 // Make a set of all the visible data objects
270 set< shared_ptr<SignalData> > visible_data;
271 BOOST_FOREACH(const shared_ptr<Signal> sig, sigs)
273 visible_data.insert(sig->data());
278 pair<double, double> View::get_time_extents() const
280 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
281 if (visible_data.empty())
282 return make_pair(0.0, 0.0);
284 double left_time = DBL_MAX, right_time = DBL_MIN;
285 BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data)
287 const double start_time = d->get_start_time();
288 double samplerate = d->samplerate();
289 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
291 left_time = min(left_time, start_time);
292 right_time = max(right_time, start_time +
293 d->get_max_sample_count() / samplerate);
296 assert(left_time < right_time);
297 return make_pair(left_time, right_time);
300 bool View::cursors_shown() const
302 return _show_cursors;
305 void View::show_cursors(bool show)
307 _show_cursors = show;
312 void View::centre_cursors()
314 const double time_width = _scale * _viewport->width();
315 _cursors.first()->set_time(_offset + time_width * 0.4);
316 _cursors.second()->set_time(_offset + time_width * 0.6);
321 CursorPair& View::cursors()
326 const CursorPair& View::cursors() const
331 const QPoint& View::hover_point() const
336 void View::normalize_layout()
338 const vector< shared_ptr<Trace> > traces(get_traces());
341 BOOST_FOREACH(const shared_ptr<Trace> t, traces)
342 v_min = min(t->get_v_offset(), v_min);
344 const int delta = -min(v_min, 0);
345 BOOST_FOREACH(shared_ptr<Trace> t, traces)
346 t->set_v_offset(t->get_v_offset() + delta);
348 verticalScrollBar()->setSliderPosition(_v_offset + delta);
349 v_scroll_value_changed(verticalScrollBar()->sliderPosition());
352 void View::update_viewport()
358 void View::get_scroll_layout(double &length, double &offset) const
360 const pair<double, double> extents = get_time_extents();
361 length = (extents.second - extents.first) / _scale;
362 offset = _offset / _scale;
365 void View::set_zoom(double scale, int offset)
367 const double cursor_offset = _offset + _scale * offset;
368 const double new_scale = max(min(scale, MaxScale), MinScale);
369 const double new_offset = cursor_offset - new_scale * offset;
370 set_scale_offset(new_scale, new_offset);
373 void View::update_scroll()
377 const QSize areaSize = _viewport->size();
379 // Set the horizontal scroll bar
380 double length = 0, offset = 0;
381 get_scroll_layout(length, offset);
382 length = max(length - areaSize.width(), 0.0);
384 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
386 _updating_scroll = true;
388 if (length < MaxScrollValue) {
389 horizontalScrollBar()->setRange(0, length);
390 horizontalScrollBar()->setSliderPosition(offset);
392 horizontalScrollBar()->setRange(0, MaxScrollValue);
393 horizontalScrollBar()->setSliderPosition(
394 _offset * MaxScrollValue / (_scale * length));
397 _updating_scroll = false;
399 // Set the vertical scrollbar
400 verticalScrollBar()->setPageStep(areaSize.height());
401 verticalScrollBar()->setRange(0,
402 _viewport->get_total_height() + SignalMargin -
406 void View::update_layout()
408 setViewportMargins(_header->sizeHint().width(),
409 _ruler->sizeHint().height(), 0, 0);
410 _ruler->setGeometry(_viewport->x(), 0,
411 _viewport->width(), _viewport->y());
412 _header->setGeometry(0, _viewport->y(),
413 _viewport->x(), _viewport->height());
417 bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a,
418 const shared_ptr<Trace> &b)
422 return a->get_v_offset() < b->get_v_offset();
425 bool View::eventFilter(QObject *object, QEvent *event)
427 const QEvent::Type type = event->type();
428 if (type == QEvent::MouseMove) {
430 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
431 if (object == _viewport)
432 _hover_point = mouse_event->pos();
433 else if (object == _ruler)
434 _hover_point = QPoint(mouse_event->x(), 0);
435 else if (object == _header)
436 _hover_point = QPoint(0, mouse_event->y());
438 _hover_point = QPoint(-1, -1);
440 hover_point_changed();
442 } else if (type == QEvent::Leave) {
443 _hover_point = QPoint(-1, -1);
444 hover_point_changed();
447 return QObject::eventFilter(object, event);
450 bool View::viewportEvent(QEvent *e)
454 case QEvent::MouseButtonPress:
455 case QEvent::MouseButtonRelease:
456 case QEvent::MouseButtonDblClick:
457 case QEvent::MouseMove:
462 return QAbstractScrollArea::viewportEvent(e);
466 void View::resizeEvent(QResizeEvent*)
471 void View::h_scroll_value_changed(int value)
473 if (_updating_scroll)
476 const int range = horizontalScrollBar()->maximum();
477 if (range < MaxScrollValue)
478 _offset = _scale * value;
480 double length = 0, offset;
481 get_scroll_layout(length, offset);
482 _offset = _scale * length * value / MaxScrollValue;
489 void View::v_scroll_value_changed(int value)
496 void View::signals_changed()
498 int offset = SignalMargin + SignalHeight;
499 const vector< shared_ptr<Trace> > traces(get_traces());
500 BOOST_FOREACH(shared_ptr<Trace> t, traces) {
502 t->set_v_offset(offset);
503 offset += SignalHeight + 2 * SignalMargin;
510 void View::data_updated()
512 // Update the scroll bars
519 void View::marker_time_changed()
525 void View::on_signals_moved()
531 void View::on_geometry_updated()