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>
31 #include <QMouseEvent>
34 #include "cursorheader.h"
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_lock;
47 using boost::shared_mutex;
48 using pv::data::SignalData;
49 using std::back_inserter;
52 using std::lock_guard;
58 using std::shared_ptr;
65 const double View::MaxScale = 1e9;
66 const double View::MinScale = 1e-15;
68 const int View::MaxScrollValue = INT_MAX / 2;
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 _cursorheader(new CursorHeader(*this)),
80 _header(new Header(*this)),
84 _updating_scroll(false),
89 connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
90 this, SLOT(h_scroll_value_changed(int)));
91 connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
92 this, SLOT(v_scroll_value_changed(int)));
94 connect(&_session, SIGNAL(signals_changed()),
95 this, SLOT(signals_changed()));
96 connect(&_session, SIGNAL(capture_state_changed(int)),
97 this, SLOT(data_updated()));
98 connect(&_session, SIGNAL(data_received()),
99 this, SLOT(data_updated()));
100 connect(&_session, SIGNAL(frame_ended()),
101 this, SLOT(data_updated()));
103 connect(_cursors.first().get(), SIGNAL(time_changed()),
104 this, SLOT(marker_time_changed()));
105 connect(_cursors.second().get(), SIGNAL(time_changed()),
106 this, SLOT(marker_time_changed()));
108 connect(_header, SIGNAL(signals_moved()),
109 this, SLOT(on_signals_moved()));
111 connect(_header, SIGNAL(selection_changed()),
112 _cursorheader, SLOT(clear_selection()));
113 connect(_cursorheader, SIGNAL(selection_changed()),
114 _header, SLOT(clear_selection()));
116 connect(_header, SIGNAL(selection_changed()),
117 this, SIGNAL(selection_changed()));
118 connect(_cursorheader, SIGNAL(selection_changed()),
119 this, SIGNAL(selection_changed()));
121 connect(this, SIGNAL(hover_point_changed()),
122 this, SLOT(on_hover_point_changed()));
124 connect(&_lazy_event_handler, SIGNAL(timeout()),
125 this, SLOT(process_sticky_events()));
126 _lazy_event_handler.setSingleShot(true);
128 setViewport(_viewport);
130 _viewport->installEventFilter(this);
131 _ruler->installEventFilter(this);
132 _cursorheader->installEventFilter(this);
133 _header->installEventFilter(this);
135 // Trigger the initial event manually. The default device has signals
136 // which were created before this object came into being
139 // make sure the transparent widgets are on the top
140 _cursorheader->raise();
144 SigSession& View::session()
149 const SigSession& View::session() const
159 const View* View::view() const
164 Viewport* View::viewport()
169 const Viewport* View::viewport() const
174 double View::scale() const
179 double View::offset() const
184 int View::owner_v_offset() const
189 void View::zoom(double steps)
191 zoom(steps, _viewport->width() / 2);
194 void View::zoom(double steps, int offset)
196 set_zoom(_scale * pow(3.0/2.0, -steps), offset);
199 void View::zoom_fit()
201 const pair<double, double> extents = get_time_extents();
202 const double delta = extents.second - extents.first;
207 const int w = _viewport->width();
211 const double scale = max(min(delta / w, MaxScale), MinScale);
212 set_scale_offset(scale, extents.first);
215 void View::zoom_one_to_one()
217 using pv::data::SignalData;
219 // Make a set of all the visible data objects
220 set< shared_ptr<SignalData> > visible_data = get_visible_data();
221 if (visible_data.empty())
224 double samplerate = 0.0;
225 for (const shared_ptr<SignalData> d : visible_data) {
227 samplerate = max(samplerate, d->samplerate());
230 if (samplerate == 0.0)
234 const int w = _viewport->width();
238 set_zoom(1.0 / samplerate, w / 2);
241 void View::set_scale_offset(double scale, double offset)
248 _cursorheader->update();
250 scale_offset_changed();
253 set< shared_ptr<SignalData> > View::get_visible_data() const
255 shared_lock<shared_mutex> lock(session().signals_mutex());
256 const vector< shared_ptr<Signal> > &sigs(session().signals());
258 // Make a set of all the visible data objects
259 set< shared_ptr<SignalData> > visible_data;
260 for (const shared_ptr<Signal> sig : sigs)
262 visible_data.insert(sig->data());
267 pair<double, double> View::get_time_extents() const
269 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
270 if (visible_data.empty())
271 return make_pair(0.0, 0.0);
273 double left_time = DBL_MAX, right_time = DBL_MIN;
274 for (const shared_ptr<SignalData> d : visible_data)
276 const double start_time = d->get_start_time();
277 double samplerate = d->samplerate();
278 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
280 left_time = min(left_time, start_time);
281 right_time = max(right_time, start_time +
282 d->get_max_sample_count() / samplerate);
285 assert(left_time < right_time);
286 return make_pair(left_time, right_time);
289 bool View::cursors_shown() const
291 return _show_cursors;
294 void View::show_cursors(bool show)
296 _show_cursors = show;
297 _cursorheader->update();
301 void View::centre_cursors()
303 const double time_width = _scale * _viewport->width();
304 _cursors.first()->set_time(_offset + time_width * 0.4);
305 _cursors.second()->set_time(_offset + time_width * 0.6);
306 _cursorheader->update();
310 CursorPair& View::cursors()
315 const CursorPair& View::cursors() const
320 const QPoint& View::hover_point() const
325 void View::update_viewport()
331 void View::get_scroll_layout(double &length, double &offset) const
333 const pair<double, double> extents = get_time_extents();
334 length = (extents.second - extents.first) / _scale;
335 offset = _offset / _scale;
338 void View::set_zoom(double scale, int offset)
340 const double cursor_offset = _offset + _scale * offset;
341 const double new_scale = max(min(scale, MaxScale), MinScale);
342 const double new_offset = cursor_offset - new_scale * offset;
343 set_scale_offset(new_scale, new_offset);
346 void View::update_scroll()
350 const QSize areaSize = _viewport->size();
352 // Set the horizontal scroll bar
353 double length = 0, offset = 0;
354 get_scroll_layout(length, offset);
355 length = max(length - areaSize.width(), 0.0);
357 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
359 _updating_scroll = true;
361 if (length < MaxScrollValue) {
362 horizontalScrollBar()->setRange(0, length);
363 horizontalScrollBar()->setSliderPosition(offset);
365 horizontalScrollBar()->setRange(0, MaxScrollValue);
366 horizontalScrollBar()->setSliderPosition(
367 _offset * MaxScrollValue / (_scale * length));
370 _updating_scroll = false;
372 // Set the vertical scrollbar
373 verticalScrollBar()->setPageStep(areaSize.height());
375 const pair<int, int> extents = v_extents();
376 const int extra_scroll_height = (extents.second - extents.first) / 4;
377 verticalScrollBar()->setRange(extents.first - extra_scroll_height,
378 extents.first + extra_scroll_height);
381 void View::update_layout()
384 _header->sizeHint().width() - pv::view::Header::BaselineOffset,
385 _ruler->sizeHint().height(), 0, 0);
386 _ruler->setGeometry(_viewport->x(), 0,
387 _viewport->width(), _viewport->y());
388 _cursorheader->setGeometry(
390 _ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
391 _viewport->width(), _cursorheader->sizeHint().height());
392 _header->setGeometry(0, _viewport->y(),
393 _header->sizeHint().width(), _viewport->height());
397 void View::paint_label(QPainter &p, int right, bool hover)
404 QRectF View::label_rect(int right)
410 bool View::eventFilter(QObject *object, QEvent *event)
412 const QEvent::Type type = event->type();
413 if (type == QEvent::MouseMove) {
415 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
416 if (object == _viewport)
417 _hover_point = mouse_event->pos();
418 else if (object == _ruler || object == _cursorheader)
419 _hover_point = QPoint(mouse_event->x(), 0);
420 else if (object == _header)
421 _hover_point = QPoint(0, mouse_event->y());
423 _hover_point = QPoint(-1, -1);
425 hover_point_changed();
427 } else if (type == QEvent::Leave) {
428 _hover_point = QPoint(-1, -1);
429 hover_point_changed();
432 return QObject::eventFilter(object, event);
435 bool View::viewportEvent(QEvent *e)
439 case QEvent::MouseButtonPress:
440 case QEvent::MouseButtonRelease:
441 case QEvent::MouseButtonDblClick:
442 case QEvent::MouseMove:
444 case QEvent::TouchBegin:
445 case QEvent::TouchUpdate:
446 case QEvent::TouchEnd:
450 return QAbstractScrollArea::viewportEvent(e);
454 void View::resizeEvent(QResizeEvent*)
459 void View::appearance_changed(bool label, bool content)
467 void View::extents_changed(bool horz, bool vert)
470 (horz ? SelectableItemHExtentsChanged : 0) |
471 (vert ? SelectableItemVExtentsChanged : 0);
472 _lazy_event_handler.start();
475 void View::h_scroll_value_changed(int value)
477 if (_updating_scroll)
480 const int range = horizontalScrollBar()->maximum();
481 if (range < MaxScrollValue)
482 _offset = _scale * value;
484 double length = 0, offset;
485 get_scroll_layout(length, offset);
486 _offset = _scale * length * value / MaxScrollValue;
490 _cursorheader->update();
494 void View::v_scroll_value_changed(int value)
501 void View::signals_changed()
503 // Populate the traces
506 shared_lock<shared_mutex> lock(session().signals_mutex());
507 const vector< shared_ptr<Signal> > &sigs(session().signals());
512 const vector< shared_ptr<DecodeTrace> > decode_sigs(
513 session().get_decode_signals());
514 for (auto s : decode_sigs)
518 // Create the initial layout
520 for (shared_ptr<RowItem> r : *this) {
521 const pair<int, int> extents = r->v_extents();
523 offset += -extents.first;
524 r->force_to_v_offset(offset);
526 offset += extents.second;
532 void View::data_updated()
534 // Update the scroll bars
541 void View::marker_time_changed()
543 _cursorheader->update();
547 void View::on_signals_moved()
553 void View::process_sticky_events()
555 if (_sticky_events & SelectableItemHExtentsChanged)
557 if (_sticky_events & SelectableItemVExtentsChanged) {
562 // Clear the sticky events
566 void View::on_hover_point_changed()
568 for (shared_ptr<RowItem> r : *this)
569 r->hover_point_changed();