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_updated()),
96 this, SLOT(data_updated()));
98 connect(_cursors.first().get(), SIGNAL(time_changed()),
99 this, SLOT(marker_time_changed()));
100 connect(_cursors.second().get(), SIGNAL(time_changed()),
101 this, SLOT(marker_time_changed()));
103 connect(_header, SIGNAL(geometry_updated()),
104 this, SLOT(on_geometry_updated()));
105 connect(_header, SIGNAL(signals_moved()),
106 this, SLOT(on_signals_moved()));
108 connect(_header, SIGNAL(selection_changed()),
109 _ruler, SLOT(clear_selection()));
110 connect(_ruler, SIGNAL(selection_changed()),
111 _header, SLOT(clear_selection()));
113 connect(_header, SIGNAL(selection_changed()),
114 this, SIGNAL(selection_changed()));
115 connect(_ruler, SIGNAL(selection_changed()),
116 this, SIGNAL(selection_changed()));
118 setViewport(_viewport);
120 _viewport->installEventFilter(this);
121 _ruler->installEventFilter(this);
122 _header->installEventFilter(this);
125 SigSession& View::session()
130 const SigSession& View::session() const
135 double View::scale() const
140 double View::offset() const
145 int View::v_offset() const
150 void View::zoom(double steps)
152 zoom(steps, _viewport->width() / 2);
155 void View::zoom(double steps, int offset)
157 set_zoom(_scale * pow(3.0/2.0, -steps), offset);
160 void View::zoom_fit()
162 const pair<double, double> extents = get_time_extents();
163 const double delta = extents.second - extents.first;
168 const int w = _viewport->width();
172 const double scale = max(min(delta / w, MaxScale), MinScale);
173 set_scale_offset(scale, extents.first);
176 void View::zoom_one_to_one()
178 using pv::data::SignalData;
180 const vector< shared_ptr<Signal> > sigs(
181 session().get_signals());
183 // Make a set of all the visible data objects
184 set< shared_ptr<SignalData> > visible_data = get_visible_data();
185 if (visible_data.empty())
188 double samplerate = 0.0;
189 BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data) {
191 samplerate = max(samplerate, d->samplerate());
194 if (samplerate == 0.0)
198 const int w = _viewport->width();
202 set_zoom(1.0 / samplerate, w / 2);
205 void View::set_scale_offset(double scale, double offset)
213 scale_offset_changed();
216 vector< shared_ptr<Trace> > View::get_traces() const
218 const vector< shared_ptr<Signal> > sigs(
219 session().get_signals());
221 const vector< shared_ptr<DecodeTrace> > decode_sigs(
222 session().get_decode_signals());
223 vector< shared_ptr<Trace> > traces(
224 sigs.size() + decode_sigs.size());
226 vector< shared_ptr<Trace> > traces(sigs.size());
229 vector< shared_ptr<Trace> >::iterator i = traces.begin();
230 i = copy(sigs.begin(), sigs.end(), i);
232 i = copy(decode_sigs.begin(), decode_sigs.end(), i);
235 stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets);
239 list<weak_ptr<SelectableItem> > View::selected_items() const
241 list<weak_ptr<SelectableItem> > items;
243 // List the selected signals
244 const vector< shared_ptr<Trace> > traces(get_traces());
245 BOOST_FOREACH (shared_ptr<Trace> t, traces) {
251 // List the selected cursors
252 if (_cursors.first()->selected())
253 items.push_back(_cursors.first());
254 if (_cursors.second()->selected())
255 items.push_back(_cursors.second());
260 set< shared_ptr<SignalData> > View::get_visible_data() const
262 const vector< shared_ptr<Signal> > sigs(
263 session().get_signals());
265 // Make a set of all the visible data objects
266 set< shared_ptr<SignalData> > visible_data;
267 BOOST_FOREACH(const shared_ptr<Signal> sig, sigs)
269 visible_data.insert(sig->data());
274 pair<double, double> View::get_time_extents() const
276 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
277 if (visible_data.empty())
278 return make_pair(0.0, 0.0);
280 double left_time = DBL_MAX, right_time = DBL_MIN;
281 BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data)
283 const double start_time = d->get_start_time();
284 double samplerate = d->samplerate();
285 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
287 left_time = min(left_time, start_time);
288 right_time = max(right_time, start_time +
289 d->get_max_sample_count() / samplerate);
292 assert(left_time < right_time);
293 return make_pair(left_time, right_time);
296 bool View::cursors_shown() const
298 return _show_cursors;
301 void View::show_cursors(bool show)
303 _show_cursors = show;
308 void View::centre_cursors()
310 const double time_width = _scale * _viewport->width();
311 _cursors.first()->set_time(_offset + time_width * 0.4);
312 _cursors.second()->set_time(_offset + time_width * 0.6);
317 CursorPair& View::cursors()
322 const CursorPair& View::cursors() const
327 const QPoint& View::hover_point() const
332 void View::normalize_layout()
334 const vector< shared_ptr<Trace> > traces(get_traces());
337 BOOST_FOREACH(const shared_ptr<Trace> t, traces)
338 v_min = min(t->get_v_offset(), v_min);
340 const int delta = -min(v_min, 0);
341 BOOST_FOREACH(shared_ptr<Trace> t, traces)
342 t->set_v_offset(t->get_v_offset() + delta);
344 verticalScrollBar()->setSliderPosition(_v_offset + delta);
345 v_scroll_value_changed(verticalScrollBar()->sliderPosition());
348 void View::update_viewport()
354 void View::get_scroll_layout(double &length, double &offset) const
356 const pair<double, double> extents = get_time_extents();
357 length = (extents.second - extents.first) / _scale;
358 offset = _offset / _scale;
361 void View::set_zoom(double scale, int offset)
363 const double cursor_offset = _offset + _scale * offset;
364 const double new_scale = max(min(scale, MaxScale), MinScale);
365 const double new_offset = cursor_offset - new_scale * offset;
366 set_scale_offset(new_scale, new_offset);
369 void View::update_scroll()
373 const QSize areaSize = _viewport->size();
375 // Set the horizontal scroll bar
376 double length = 0, offset = 0;
377 get_scroll_layout(length, offset);
378 length = max(length - areaSize.width(), 0.0);
380 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
382 _updating_scroll = true;
384 if (length < MaxScrollValue) {
385 horizontalScrollBar()->setRange(0, length);
386 horizontalScrollBar()->setSliderPosition(offset);
388 horizontalScrollBar()->setRange(0, MaxScrollValue);
389 horizontalScrollBar()->setSliderPosition(
390 _offset * MaxScrollValue / (_scale * length));
393 _updating_scroll = false;
395 // Set the vertical scrollbar
396 verticalScrollBar()->setPageStep(areaSize.height());
397 verticalScrollBar()->setRange(0,
398 _viewport->get_total_height() + SignalMargin -
402 void View::update_layout()
404 setViewportMargins(_header->sizeHint().width(),
405 _ruler->sizeHint().height(), 0, 0);
406 _ruler->setGeometry(_viewport->x(), 0,
407 _viewport->width(), _viewport->y());
408 _header->setGeometry(0, _viewport->y(),
409 _viewport->x(), _viewport->height());
413 bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a,
414 const shared_ptr<Trace> &b)
418 return a->get_v_offset() < b->get_v_offset();
421 bool View::eventFilter(QObject *object, QEvent *event)
423 const QEvent::Type type = event->type();
424 if (type == QEvent::MouseMove) {
426 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
427 if (object == _viewport)
428 _hover_point = mouse_event->pos();
429 else if (object == _ruler)
430 _hover_point = QPoint(mouse_event->x(), 0);
431 else if (object == _header)
432 _hover_point = QPoint(0, mouse_event->y());
434 _hover_point = QPoint(-1, -1);
436 hover_point_changed();
438 } else if (type == QEvent::Leave) {
439 _hover_point = QPoint(-1, -1);
440 hover_point_changed();
443 return QObject::eventFilter(object, event);
446 bool View::viewportEvent(QEvent *e)
450 case QEvent::MouseButtonPress:
451 case QEvent::MouseButtonRelease:
452 case QEvent::MouseButtonDblClick:
453 case QEvent::MouseMove:
458 return QAbstractScrollArea::viewportEvent(e);
462 void View::resizeEvent(QResizeEvent*)
467 void View::h_scroll_value_changed(int value)
469 if (_updating_scroll)
472 const int range = horizontalScrollBar()->maximum();
473 if (range < MaxScrollValue)
474 _offset = _scale * value;
476 double length = 0, offset;
477 get_scroll_layout(length, offset);
478 _offset = _scale * length * value / MaxScrollValue;
485 void View::v_scroll_value_changed(int value)
492 void View::signals_changed()
494 int offset = SignalMargin + SignalHeight;
495 const vector< shared_ptr<Trace> > traces(get_traces());
496 BOOST_FOREACH(shared_ptr<Trace> t, traces) {
498 t->set_v_offset(offset);
499 offset += SignalHeight + 2 * SignalMargin;
506 void View::data_updated()
508 // Update the scroll bars
515 void View::marker_time_changed()
521 void View::on_signals_moved()
527 void View::on_geometry_updated()