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
25 #include <boost/foreach.hpp>
28 #include <QMouseEvent>
31 #include "decodesignal.h"
38 #include "pv/sigsession.h"
39 #include "pv/data/logic.h"
40 #include "pv/data/logicsnapshot.h"
42 using namespace boost;
48 const double View::MaxScale = 1e9;
49 const double View::MinScale = 1e-15;
51 const int View::LabelMarginWidth = 70;
52 const int View::RulerHeight = 30;
54 const int View::MaxScrollValue = INT_MAX / 2;
56 const int View::SignalHeight = 30;
57 const int View::SignalMargin = 10;
58 const int View::SignalSnapGridSize = 10;
60 const QColor View::CursorAreaColour(220, 231, 243);
62 const QSizeF View::LabelPadding(4, 0);
64 View::View(SigSession &session, QWidget *parent) :
65 QAbstractScrollArea(parent),
67 _viewport(new Viewport(*this)),
68 _ruler(new Ruler(*this)),
69 _header(new Header(*this)),
74 _updating_scroll(false),
79 connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
80 this, SLOT(h_scroll_value_changed(int)));
81 connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
82 this, SLOT(v_scroll_value_changed(int)));
84 connect(&_session, SIGNAL(signals_changed()),
85 this, SLOT(signals_changed()));
86 connect(&_session, SIGNAL(data_updated()),
87 this, SLOT(data_updated()));
89 connect(_cursors.first().get(), SIGNAL(time_changed()),
90 this, SLOT(marker_time_changed()));
91 connect(_cursors.second().get(), SIGNAL(time_changed()),
92 this, SLOT(marker_time_changed()));
94 connect(_header, SIGNAL(signals_moved()),
95 this, SLOT(on_signals_moved()));
97 connect(_header, SIGNAL(selection_changed()),
98 _ruler, SLOT(clear_selection()));
99 connect(_ruler, SIGNAL(selection_changed()),
100 _header, SLOT(clear_selection()));
102 connect(_header, SIGNAL(selection_changed()),
103 this, SIGNAL(selection_changed()));
104 connect(_ruler, SIGNAL(selection_changed()),
105 this, SIGNAL(selection_changed()));
107 setViewportMargins(LabelMarginWidth, RulerHeight, 0, 0);
108 setViewport(_viewport);
110 _viewport->installEventFilter(this);
111 _ruler->installEventFilter(this);
112 _header->installEventFilter(this);
115 SigSession& View::session()
120 const SigSession& View::session() const
125 double View::scale() const
130 double View::offset() const
135 int View::v_offset() const
140 void View::zoom(double steps)
142 zoom(steps, (width() - LabelMarginWidth) / 2);
145 void View::zoom(double steps, int offset)
147 const double cursor_offset = _offset + _scale * offset;
148 _scale *= pow(3.0/2.0, -steps);
149 _scale = max(min(_scale, MaxScale), MinScale);
150 _offset = cursor_offset - _scale * offset;
158 void View::set_scale_offset(double scale, double offset)
168 vector< shared_ptr<Trace> > View::get_traces() const
170 const vector< shared_ptr<Signal> > sigs(
171 session().get_signals());
172 const vector< shared_ptr<DecodeSignal> > decode_sigs(
173 session().get_decode_signals());
174 vector< shared_ptr<Trace> > traces(
175 sigs.size() + decode_sigs.size());
177 vector< shared_ptr<Trace> >::iterator i = traces.begin();
178 i = copy(sigs.begin(), sigs.end(), i);
179 i = copy(decode_sigs.begin(), decode_sigs.end(), i);
181 sort(traces.begin(), traces.end(), compare_trace_v_offsets);
185 list<weak_ptr<SelectableItem> > View::selected_items() const
187 list<weak_ptr<SelectableItem> > items;
189 // List the selected signals
190 const vector< shared_ptr<Trace> > traces(get_traces());
191 BOOST_FOREACH (shared_ptr<Trace> t, traces) {
197 // List the selected cursors
198 if (_cursors.first()->selected())
199 items.push_back(_cursors.first());
200 if (_cursors.second()->selected())
201 items.push_back(_cursors.second());
206 bool View::cursors_shown() const
208 return _show_cursors;
211 void View::show_cursors(bool show)
213 _show_cursors = show;
218 void View::centre_cursors()
220 const double time_width = _scale * _viewport->width();
221 _cursors.first()->set_time(_offset + time_width * 0.4);
222 _cursors.second()->set_time(_offset + time_width * 0.6);
227 CursorPair& View::cursors()
232 const CursorPair& View::cursors() const
237 const QPoint& View::hover_point() const
242 void View::normalize_layout()
244 const vector< shared_ptr<Trace> > traces(get_traces());
247 BOOST_FOREACH(const shared_ptr<Trace> t, traces)
248 v_min = min(t->get_v_offset(), v_min);
250 const int delta = -min(v_min, 0);
251 BOOST_FOREACH(shared_ptr<Trace> t, traces)
252 t->set_v_offset(t->get_v_offset() + delta);
254 verticalScrollBar()->setSliderPosition(_v_offset + delta);
255 v_scroll_value_changed(verticalScrollBar()->sliderPosition());
258 void View::get_scroll_layout(double &length, double &offset) const
260 const shared_ptr<data::SignalData> sig_data = _session.get_data();
264 length = _data_length / (sig_data->get_samplerate() * _scale);
265 offset = _offset / _scale;
268 void View::update_scroll()
272 const QSize areaSize = _viewport->size();
274 // Set the horizontal scroll bar
275 double length = 0, offset = 0;
276 get_scroll_layout(length, offset);
277 length = max(length - areaSize.width(), 0.0);
279 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
281 _updating_scroll = true;
283 if (length < MaxScrollValue) {
284 horizontalScrollBar()->setRange(0, length);
285 horizontalScrollBar()->setSliderPosition(offset);
287 horizontalScrollBar()->setRange(0, MaxScrollValue);
288 horizontalScrollBar()->setSliderPosition(
289 _offset * MaxScrollValue / (_scale * length));
292 _updating_scroll = false;
294 // Set the vertical scrollbar
295 verticalScrollBar()->setPageStep(areaSize.height());
296 verticalScrollBar()->setRange(0,
297 _viewport->get_total_height() + SignalMargin -
301 bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a,
302 const shared_ptr<Trace> &b)
306 return a->get_v_offset() < b->get_v_offset();
309 bool View::eventFilter(QObject *object, QEvent *event)
311 const QEvent::Type type = event->type();
312 if (type == QEvent::MouseMove) {
314 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
315 if (object == _viewport)
316 _hover_point = mouse_event->pos();
317 else if (object == _ruler)
318 _hover_point = QPoint(mouse_event->x(), 0);
319 else if (object == _header)
320 _hover_point = QPoint(0, mouse_event->y());
322 _hover_point = QPoint(-1, -1);
324 hover_point_changed();
326 } else if (type == QEvent::Leave) {
327 _hover_point = QPoint(-1, -1);
328 hover_point_changed();
331 return QObject::eventFilter(object, event);
334 bool View::viewportEvent(QEvent *e)
338 case QEvent::MouseButtonPress:
339 case QEvent::MouseButtonRelease:
340 case QEvent::MouseButtonDblClick:
341 case QEvent::MouseMove:
346 return QAbstractScrollArea::viewportEvent(e);
350 void View::resizeEvent(QResizeEvent*)
352 _ruler->setGeometry(_viewport->x(), 0,
353 _viewport->width(), _viewport->y());
354 _header->setGeometry(0, _viewport->y(),
355 _viewport->x(), _viewport->height());
359 void View::h_scroll_value_changed(int value)
361 if (_updating_scroll)
364 const int range = horizontalScrollBar()->maximum();
365 if (range < MaxScrollValue)
366 _offset = _scale * value;
368 double length = 0, offset;
369 get_scroll_layout(length, offset);
370 _offset = _scale * length * value / MaxScrollValue;
377 void View::v_scroll_value_changed(int value)
384 void View::signals_changed()
386 int offset = SignalMargin + SignalHeight;
387 const vector< shared_ptr<Signal> > sigs(_session.get_signals());
388 BOOST_FOREACH(shared_ptr<Signal> s, sigs) {
389 s->init_context_bar_actions(NULL);
390 s->set_v_offset(offset);
391 offset += SignalHeight + 2 * SignalMargin;
397 void View::data_updated()
399 // Get the new data length
401 shared_ptr<data::Logic> sig_data = _session.get_data();
403 deque< shared_ptr<data::LogicSnapshot> > &snapshots =
404 sig_data->get_snapshots();
405 BOOST_FOREACH(shared_ptr<data::LogicSnapshot> s, snapshots)
407 _data_length = max(_data_length,
408 s->get_sample_count());
411 // Update the scroll bars
418 void View::marker_time_changed()
424 void View::on_signals_moved()