+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <assert.h>
-#include <limits.h>
-#include <math.h>
-
-#include <boost/foreach.hpp>
-
-#include <QEvent>
-#include <QMouseEvent>
-#include <QScrollBar>
-
-#include "decodesignal.h"
-#include "header.h"
-#include "ruler.h"
-#include "signal.h"
-#include "view.h"
-#include "viewport.h"
-
-#include "pv/sigsession.h"
-#include "pv/data/logic.h"
-#include "pv/data/logicsnapshot.h"
-
-using namespace boost;
-using namespace std;
-
-namespace pv {
-namespace view {
-
-const double View::MaxScale = 1e9;
-const double View::MinScale = 1e-15;
-
-const int View::LabelMarginWidth = 70;
-const int View::RulerHeight = 30;
-
-const int View::MaxScrollValue = INT_MAX / 2;
-
-const int View::SignalHeight = 30;
-const int View::SignalMargin = 10;
-const int View::SignalSnapGridSize = 10;
-
-const QColor View::CursorAreaColour(220, 231, 243);
-
-const QSizeF View::LabelPadding(4, 0);
-
-View::View(SigSession &session, QWidget *parent) :
- QAbstractScrollArea(parent),
- _session(session),
- _viewport(new Viewport(*this)),
- _ruler(new Ruler(*this)),
- _header(new Header(*this)),
- _data_length(0),
- _scale(1e-6),
- _offset(0),
- _v_offset(0),
- _updating_scroll(false),
- _show_cursors(false),
- _cursors(*this),
- _hover_point(-1, -1)
-{
- connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
- this, SLOT(h_scroll_value_changed(int)));
- connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
- this, SLOT(v_scroll_value_changed(int)));
-
- connect(&_session, SIGNAL(signals_changed()),
- this, SLOT(signals_changed()));
- connect(&_session, SIGNAL(data_updated()),
- this, SLOT(data_updated()));
-
- connect(_cursors.first().get(), SIGNAL(time_changed()),
- this, SLOT(marker_time_changed()));
- connect(_cursors.second().get(), SIGNAL(time_changed()),
- this, SLOT(marker_time_changed()));
-
- connect(_header, SIGNAL(signals_moved()),
- this, SLOT(on_signals_moved()));
-
- connect(_header, SIGNAL(selection_changed()),
- _ruler, SLOT(clear_selection()));
- connect(_ruler, SIGNAL(selection_changed()),
- _header, SLOT(clear_selection()));
-
- connect(_header, SIGNAL(selection_changed()),
- this, SIGNAL(selection_changed()));
- connect(_ruler, SIGNAL(selection_changed()),
- this, SIGNAL(selection_changed()));
-
- setViewportMargins(LabelMarginWidth, RulerHeight, 0, 0);
- setViewport(_viewport);
-
- _viewport->installEventFilter(this);
- _ruler->installEventFilter(this);
- _header->installEventFilter(this);
-}
-
-SigSession& View::session()
-{
- return _session;
-}
-
-const SigSession& View::session() const
-{
- return _session;
-}
-
-double View::scale() const
-{
- return _scale;
-}
-
-double View::offset() const
-{
- return _offset;
-}
-
-int View::v_offset() const
-{
- return _v_offset;
-}
-
-void View::zoom(double steps)
-{
- zoom(steps, (width() - LabelMarginWidth) / 2);
-}
-
-void View::zoom(double steps, int offset)
-{
- const double cursor_offset = _offset + _scale * offset;
- const double new_scale = max(min(_scale * pow(3.0/2.0, -steps),
- MaxScale), MinScale);
- const double new_offset = cursor_offset - new_scale * offset;
- set_scale_offset(new_scale, new_offset);
-}
-
-void View::set_scale_offset(double scale, double offset)
-{
- _scale = scale;
- _offset = offset;
-
- update_scroll();
- _ruler->update();
- _viewport->update();
-}
-
-vector< shared_ptr<Trace> > View::get_traces() const
-{
- const vector< shared_ptr<Signal> > sigs(
- session().get_signals());
- const vector< shared_ptr<DecodeSignal> > decode_sigs(
- session().get_decode_signals());
- vector< shared_ptr<Trace> > traces(
- sigs.size() + decode_sigs.size());
-
- vector< shared_ptr<Trace> >::iterator i = traces.begin();
- i = copy(sigs.begin(), sigs.end(), i);
- i = copy(decode_sigs.begin(), decode_sigs.end(), i);
-
- sort(traces.begin(), traces.end(), compare_trace_v_offsets);
- return traces;
-}
-
-list<weak_ptr<SelectableItem> > View::selected_items() const
-{
- list<weak_ptr<SelectableItem> > items;
-
- // List the selected signals
- const vector< shared_ptr<Trace> > traces(get_traces());
- BOOST_FOREACH (shared_ptr<Trace> t, traces) {
- assert(t);
- if (t->selected())
- items.push_back(t);
- }
-
- // List the selected cursors
- if (_cursors.first()->selected())
- items.push_back(_cursors.first());
- if (_cursors.second()->selected())
- items.push_back(_cursors.second());
-
- return items;
-}
-
-bool View::cursors_shown() const
-{
- return _show_cursors;
-}
-
-void View::show_cursors(bool show)
-{
- _show_cursors = show;
- _ruler->update();
- _viewport->update();
-}
-
-void View::centre_cursors()
-{
- const double time_width = _scale * _viewport->width();
- _cursors.first()->set_time(_offset + time_width * 0.4);
- _cursors.second()->set_time(_offset + time_width * 0.6);
- _ruler->update();
- _viewport->update();
-}
-
-CursorPair& View::cursors()
-{
- return _cursors;
-}
-
-const CursorPair& View::cursors() const
-{
- return _cursors;
-}
-
-const QPoint& View::hover_point() const
-{
- return _hover_point;
-}
-
-void View::normalize_layout()
-{
- const vector< shared_ptr<Trace> > traces(get_traces());
-
- int v_min = INT_MAX;
- BOOST_FOREACH(const shared_ptr<Trace> t, traces)
- v_min = min(t->get_v_offset(), v_min);
-
- const int delta = -min(v_min, 0);
- BOOST_FOREACH(shared_ptr<Trace> t, traces)
- t->set_v_offset(t->get_v_offset() + delta);
-
- verticalScrollBar()->setSliderPosition(_v_offset + delta);
- v_scroll_value_changed(verticalScrollBar()->sliderPosition());
-}
-
-void View::get_scroll_layout(double &length, double &offset) const
-{
- const shared_ptr<data::SignalData> sig_data = _session.get_data();
- if (!sig_data)
- return;
-
- length = _data_length / (sig_data->get_samplerate() * _scale);
- offset = _offset / _scale;
-}
-
-void View::update_scroll()
-{
- assert(_viewport);
-
- const QSize areaSize = _viewport->size();
-
- // Set the horizontal scroll bar
- double length = 0, offset = 0;
- get_scroll_layout(length, offset);
- length = max(length - areaSize.width(), 0.0);
-
- horizontalScrollBar()->setPageStep(areaSize.width() / 2);
-
- _updating_scroll = true;
-
- if (length < MaxScrollValue) {
- horizontalScrollBar()->setRange(0, length);
- horizontalScrollBar()->setSliderPosition(offset);
- } else {
- horizontalScrollBar()->setRange(0, MaxScrollValue);
- horizontalScrollBar()->setSliderPosition(
- _offset * MaxScrollValue / (_scale * length));
- }
-
- _updating_scroll = false;
-
- // Set the vertical scrollbar
- verticalScrollBar()->setPageStep(areaSize.height());
- verticalScrollBar()->setRange(0,
- _viewport->get_total_height() + SignalMargin -
- areaSize.height());
-}
-
-bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a,
- const shared_ptr<Trace> &b)
-{
- assert(a);
- assert(b);
- return a->get_v_offset() < b->get_v_offset();
-}
-
-bool View::eventFilter(QObject *object, QEvent *event)
-{
- const QEvent::Type type = event->type();
- if (type == QEvent::MouseMove) {
-
- const QMouseEvent *const mouse_event = (QMouseEvent*)event;
- if (object == _viewport)
- _hover_point = mouse_event->pos();
- else if (object == _ruler)
- _hover_point = QPoint(mouse_event->x(), 0);
- else if (object == _header)
- _hover_point = QPoint(0, mouse_event->y());
- else
- _hover_point = QPoint(-1, -1);
-
- hover_point_changed();
-
- } else if (type == QEvent::Leave) {
- _hover_point = QPoint(-1, -1);
- hover_point_changed();
- }
-
- return QObject::eventFilter(object, event);
-}
-
-bool View::viewportEvent(QEvent *e)
-{
- switch(e->type()) {
- case QEvent::Paint:
- case QEvent::MouseButtonPress:
- case QEvent::MouseButtonRelease:
- case QEvent::MouseButtonDblClick:
- case QEvent::MouseMove:
- case QEvent::Wheel:
- return false;
-
- default:
- return QAbstractScrollArea::viewportEvent(e);
- }
-}
-
-void View::resizeEvent(QResizeEvent*)
-{
- _ruler->setGeometry(_viewport->x(), 0,
- _viewport->width(), _viewport->y());
- _header->setGeometry(0, _viewport->y(),
- _viewport->x(), _viewport->height());
- update_scroll();
-}
-
-void View::h_scroll_value_changed(int value)
-{
- if (_updating_scroll)
- return;
-
- const int range = horizontalScrollBar()->maximum();
- if (range < MaxScrollValue)
- _offset = _scale * value;
- else {
- double length = 0, offset;
- get_scroll_layout(length, offset);
- _offset = _scale * length * value / MaxScrollValue;
- }
-
- _ruler->update();
- _viewport->update();
-}
-
-void View::v_scroll_value_changed(int value)
-{
- _v_offset = value;
- _header->update();
- _viewport->update();
-}
-
-void View::signals_changed()
-{
- int offset = SignalMargin + SignalHeight;
- const vector< shared_ptr<Trace> > traces(get_traces());
- BOOST_FOREACH(shared_ptr<Trace> t, traces) {
- t->set_view(this);
- t->init_context_bar_actions(NULL);
- t->set_v_offset(offset);
- offset += SignalHeight + 2 * SignalMargin;
- }
-
- normalize_layout();
-}
-
-void View::data_updated()
-{
- // Get the new data length
- _data_length = 0;
- shared_ptr<data::Logic> sig_data = _session.get_data();
- if (sig_data) {
- deque< shared_ptr<data::LogicSnapshot> > &snapshots =
- sig_data->get_snapshots();
- BOOST_FOREACH(shared_ptr<data::LogicSnapshot> s, snapshots)
- if (s)
- _data_length = max(_data_length,
- s->get_sample_count());
- }
-
- // Update the scroll bars
- update_scroll();
-
- // Repaint the view
- _viewport->update();
-}
-
-void View::marker_time_changed()
-{
- _ruler->update();
- _viewport->update();
-}
-
-void View::on_signals_moved()
-{
- update_scroll();
- signals_moved();
-}
-
-} // namespace view
-} // namespace pv
projects / pulseview.git / blobdiff