+++ /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, see <http://www.gnu.org/licenses/>.
- */
-
-#ifdef ENABLE_DECODE
-#include <libsigrokdecode/libsigrokdecode.h>
-#endif
-
-#include <extdef.h>
-
-#include <algorithm>
-#include <cassert>
-#include <climits>
-#include <cmath>
-#include <iostream>
-#include <iterator>
-#include <unordered_set>
-
-#include <boost/archive/text_iarchive.hpp>
-#include <boost/archive/text_oarchive.hpp>
-#include <boost/serialization/serialization.hpp>
-
-#include <QApplication>
-#include <QEvent>
-#include <QFontMetrics>
-#include <QMouseEvent>
-#include <QScrollBar>
-#include <QVBoxLayout>
-
-#include <libsigrokcxx/libsigrokcxx.hpp>
-
-#include "analogsignal.hpp"
-#include "header.hpp"
-#include "logicsignal.hpp"
-#include "ruler.hpp"
-#include "signal.hpp"
-#include "tracegroup.hpp"
-#include "triggermarker.hpp"
-#include "view.hpp"
-#include "viewport.hpp"
-
-#include "pv/data/logic.hpp"
-#include "pv/data/logicsegment.hpp"
-#include "pv/devices/device.hpp"
-#include "pv/globalsettings.hpp"
-#include "pv/session.hpp"
-#include "pv/util.hpp"
-
-#ifdef ENABLE_DECODE
-#include "decodetrace.hpp"
-#endif
-
-using pv::data::SignalData;
-using pv::data::Segment;
-using pv::util::TimeUnit;
-using pv::util::Timestamp;
-
-using std::back_inserter;
-using std::copy_if;
-using std::count_if;
-using std::dynamic_pointer_cast;
-using std::inserter;
-using std::max;
-using std::make_pair;
-using std::make_shared;
-using std::min;
-using std::pair;
-using std::set;
-using std::set_difference;
-using std::shared_ptr;
-using std::stringstream;
-using std::unordered_map;
-using std::unordered_set;
-using std::vector;
-
-namespace pv {
-namespace views {
-namespace TraceView {
-
-const Timestamp View::MaxScale("1e9");
-const Timestamp View::MinScale("1e-12");
-
-const int View::MaxScrollValue = INT_MAX / 2;
-
-const int View::ScaleUnits[3] = {1, 2, 5};
-
-
-CustomScrollArea::CustomScrollArea(QWidget *parent) :
- QAbstractScrollArea(parent)
-{
-}
-
-bool CustomScrollArea::viewportEvent(QEvent *event)
-{
- switch (event->type()) {
- case QEvent::Paint:
- case QEvent::MouseButtonPress:
- case QEvent::MouseButtonRelease:
- case QEvent::MouseButtonDblClick:
- case QEvent::MouseMove:
- case QEvent::Wheel:
- case QEvent::TouchBegin:
- case QEvent::TouchUpdate:
- case QEvent::TouchEnd:
- return false;
- default:
- return QAbstractScrollArea::viewportEvent(event);
- }
-}
-
-View::View(Session &session, bool is_main_view, QWidget *parent) :
- ViewBase(session, is_main_view, parent),
- splitter_(new QSplitter()),
- scale_(1e-3),
- offset_(0),
- updating_scroll_(false),
- settings_restored_(false),
- sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
- always_zoom_to_fit_(false),
- tick_period_(0),
- tick_prefix_(pv::util::SIPrefix::yocto),
- tick_precision_(0),
- time_unit_(util::TimeUnit::Time),
- show_cursors_(false),
- cursors_(new CursorPair(*this)),
- next_flag_text_('A'),
- trigger_markers_(),
- hover_point_(-1, -1),
- scroll_needs_defaults_(true),
- saved_v_offset_(0)
-{
- QVBoxLayout *root_layout = new QVBoxLayout(this);
- root_layout->setContentsMargins(0, 0, 0, 0);
- root_layout->addWidget(splitter_);
-
- viewport_ = new Viewport(*this);
- scrollarea_ = new CustomScrollArea(splitter_);
- scrollarea_->setViewport(viewport_);
- scrollarea_->setFrameShape(QFrame::NoFrame);
-
- ruler_ = new Ruler(*this);
-
- header_ = new Header(*this);
- header_->setMinimumWidth(10); // So that the arrow tips show at least
-
- // We put the header into a simple layout so that we can add the top margin,
- // allowing us to make it line up with the bottom of the ruler
- QWidget *header_container = new QWidget();
- header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
- QVBoxLayout *header_layout = new QVBoxLayout(header_container);
- header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
- header_layout->addWidget(header_);
-
- // To let the ruler and scrollarea be on the same split pane, we need a layout
- QWidget *trace_container = new QWidget();
- trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
- QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
- trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
- trace_layout->setContentsMargins(0, 0, 0, 0);
- trace_layout->addWidget(ruler_);
- trace_layout->addWidget(scrollarea_);
-
- splitter_->addWidget(header_container);
- splitter_->addWidget(trace_container);
- splitter_->setHandleWidth(1); // Don't show a visible rubber band
- splitter_->setCollapsible(0, false); // Prevent the header from collapsing
- splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
- splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
-
- viewport_->installEventFilter(this);
- ruler_->installEventFilter(this);
- header_->installEventFilter(this);
-
- // Set up settings and event handlers
- GlobalSettings settings;
- coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
-
- connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
- this, SLOT(h_scroll_value_changed(int)));
- connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
- this, SLOT(v_scroll_value_changed()));
-
- 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()));
-
- connect(splitter_, SIGNAL(splitterMoved(int, int)),
- this, SLOT(on_splitter_moved()));
-
- connect(this, SIGNAL(hover_point_changed()),
- this, SLOT(on_hover_point_changed()));
-
- connect(&lazy_event_handler_, SIGNAL(timeout()),
- this, SLOT(process_sticky_events()));
- lazy_event_handler_.setSingleShot(true);
-
- // Trigger the initial event manually. The default device has signals
- // which were created before this object came into being
- signals_changed();
-
- // make sure the transparent widgets are on the top
- ruler_->raise();
- header_->raise();
-
- // Update the zoom state
- calculate_tick_spacing();
-}
-
-Session& View::session()
-{
- return session_;
-}
-
-const Session& View::session() const
-{
- return session_;
-}
-
-unordered_set< shared_ptr<Signal> > View::signals() const
-{
- return signals_;
-}
-
-void View::clear_signals()
-{
- ViewBase::clear_signalbases();
- signals_.clear();
-}
-
-void View::add_signal(const shared_ptr<Signal> signal)
-{
- ViewBase::add_signalbase(signal->base());
- signals_.insert(signal);
-}
-
-#ifdef ENABLE_DECODE
-void View::clear_decode_signals()
-{
- decode_traces_.clear();
-}
-
-void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
-{
- shared_ptr<DecodeTrace> d(
- new DecodeTrace(session_, signalbase, decode_traces_.size()));
- decode_traces_.push_back(d);
-}
-
-void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
-{
- for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
- if ((*i)->base() == signalbase) {
- decode_traces_.erase(i);
- signals_changed();
- return;
- }
-}
-#endif
-
-View* View::view()
-{
- return this;
-}
-
-const View* View::view() const
-{
- return this;
-}
-
-Viewport* View::viewport()
-{
- return viewport_;
-}
-
-const Viewport* View::viewport() const
-{
- return viewport_;
-}
-
-void View::save_settings(QSettings &settings) const
-{
- settings.setValue("scale", scale_);
- settings.setValue("v_offset",
- scrollarea_->verticalScrollBar()->sliderPosition());
-
- settings.setValue("splitter_state", splitter_->saveState());
-
- stringstream ss;
- boost::archive::text_oarchive oa(ss);
- oa << boost::serialization::make_nvp("offset", offset_);
- settings.setValue("offset", QString::fromStdString(ss.str()));
-
- for (shared_ptr<Signal> signal : signals_) {
- settings.beginGroup(signal->base()->internal_name());
- signal->save_settings(settings);
- settings.endGroup();
- }
-}
-
-void View::restore_settings(QSettings &settings)
-{
- // Note: It is assumed that this function is only called once,
- // immediately after restoring a previous session.
-
- if (settings.contains("scale"))
- set_scale(settings.value("scale").toDouble());
-
- if (settings.contains("offset")) {
- util::Timestamp offset;
- stringstream ss;
- ss << settings.value("offset").toString().toStdString();
-
- boost::archive::text_iarchive ia(ss);
- ia >> boost::serialization::make_nvp("offset", offset);
-
- set_offset(offset);
- }
-
- if (settings.contains("splitter_state"))
- splitter_->restoreState(settings.value("splitter_state").toByteArray());
-
- for (shared_ptr<Signal> signal : signals_) {
- settings.beginGroup(signal->base()->internal_name());
- signal->restore_settings(settings);
- settings.endGroup();
- }
-
- if (settings.contains("v_offset")) {
- saved_v_offset_ = settings.value("v_offset").toInt();
- set_v_offset(saved_v_offset_);
- scroll_needs_defaults_ = false;
- // Note: see eventFilter() for additional information
- }
-
- settings_restored_ = true;
-}
-
-vector< shared_ptr<TimeItem> > View::time_items() const
-{
- const vector<shared_ptr<Flag>> f(flags());
- vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
- items.push_back(cursors_);
- items.push_back(cursors_->first());
- items.push_back(cursors_->second());
-
- for (auto trigger_marker : trigger_markers_)
- items.push_back(trigger_marker);
-
- return items;
-}
-
-double View::scale() const
-{
- return scale_;
-}
-
-void View::set_scale(double scale)
-{
- if (scale_ != scale) {
- scale_ = scale;
- scale_changed();
- }
-}
-
-const Timestamp& View::offset() const
-{
- return offset_;
-}
-
-void View::set_offset(const pv::util::Timestamp& offset)
-{
- if (offset_ != offset) {
- offset_ = offset;
- offset_changed();
- }
-}
-
-int View::owner_visual_v_offset() const
-{
- return -scrollarea_->verticalScrollBar()->sliderPosition();
-}
-
-void View::set_v_offset(int offset)
-{
- scrollarea_->verticalScrollBar()->setSliderPosition(offset);
- header_->update();
- viewport_->update();
-}
-
-unsigned int View::depth() const
-{
- return 0;
-}
-
-pv::util::SIPrefix View::tick_prefix() const
-{
- return tick_prefix_;
-}
-
-void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
-{
- if (tick_prefix_ != tick_prefix) {
- tick_prefix_ = tick_prefix;
- tick_prefix_changed();
- }
-}
-
-unsigned int View::tick_precision() const
-{
- return tick_precision_;
-}
-
-void View::set_tick_precision(unsigned tick_precision)
-{
- if (tick_precision_ != tick_precision) {
- tick_precision_ = tick_precision;
- tick_precision_changed();
- }
-}
-
-const pv::util::Timestamp& View::tick_period() const
-{
- return tick_period_;
-}
-
-void View::set_tick_period(const pv::util::Timestamp& tick_period)
-{
- if (tick_period_ != tick_period) {
- tick_period_ = tick_period;
- tick_period_changed();
- }
-}
-
-TimeUnit View::time_unit() const
-{
- return time_unit_;
-}
-
-void View::set_time_unit(pv::util::TimeUnit time_unit)
-{
- if (time_unit_ != time_unit) {
- time_unit_ = time_unit;
- time_unit_changed();
- }
-}
-
-void View::zoom(double steps)
-{
- zoom(steps, viewport_->width() / 2);
-}
-
-void View::zoom(double steps, int offset)
-{
- set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
-}
-
-void View::zoom_fit(bool gui_state)
-{
- // Act as one-shot when stopped, toggle along with the GUI otherwise
- if (session_.get_capture_state() == Session::Stopped) {
- always_zoom_to_fit_ = false;
- always_zoom_to_fit_changed(false);
- } else {
- always_zoom_to_fit_ = gui_state;
- always_zoom_to_fit_changed(gui_state);
- }
-
- const pair<Timestamp, Timestamp> extents = get_time_extents();
- const Timestamp delta = extents.second - extents.first;
- if (delta < Timestamp("1e-12"))
- return;
-
- assert(viewport_);
- const int w = viewport_->width();
- if (w <= 0)
- return;
-
- const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
- set_scale_offset(scale.convert_to<double>(), extents.first);
-}
-
-void View::zoom_one_to_one()
-{
- using pv::data::SignalData;
-
- // Make a set of all the visible data objects
- set< shared_ptr<SignalData> > visible_data = get_visible_data();
- if (visible_data.empty())
- return;
-
- assert(viewport_);
- const int w = viewport_->width();
- if (w <= 0)
- return;
-
- set_zoom(1.0 / session_.get_samplerate(), w / 2);
-}
-
-void View::set_scale_offset(double scale, const Timestamp& offset)
-{
- // Disable sticky scrolling / always zoom to fit when acquisition runs
- // and user drags the viewport
- if ((scale_ == scale) && (offset_ != offset) &&
- (session_.get_capture_state() == Session::Running)) {
-
- if (sticky_scrolling_) {
- sticky_scrolling_ = false;
- sticky_scrolling_changed(false);
- }
-
- if (always_zoom_to_fit_) {
- always_zoom_to_fit_ = false;
- always_zoom_to_fit_changed(false);
- }
- }
-
- set_scale(scale);
- set_offset(offset);
-
- calculate_tick_spacing();
-
- update_scroll();
- ruler_->update();
- viewport_->update();
-}
-
-set< shared_ptr<SignalData> > View::get_visible_data() const
-{
- // Make a set of all the visible data objects
- set< shared_ptr<SignalData> > visible_data;
- for (const shared_ptr<Signal> sig : signals_)
- if (sig->enabled())
- visible_data.insert(sig->data());
-
- return visible_data;
-}
-
-pair<Timestamp, Timestamp> View::get_time_extents() const
-{
- boost::optional<Timestamp> left_time, right_time;
- const set< shared_ptr<SignalData> > visible_data = get_visible_data();
- for (const shared_ptr<SignalData> d : visible_data) {
- const vector< shared_ptr<Segment> > segments = d->segments();
- for (const shared_ptr<Segment> &s : segments) {
- double samplerate = s->samplerate();
- samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
-
- const Timestamp start_time = s->start_time();
- left_time = left_time ?
- min(*left_time, start_time) :
- start_time;
- right_time = right_time ?
- max(*right_time, start_time + d->max_sample_count() / samplerate) :
- start_time + d->max_sample_count() / samplerate;
- }
- }
-
- if (!left_time || !right_time)
- return make_pair(0, 0);
-
- assert(*left_time < *right_time);
- return make_pair(*left_time, *right_time);
-}
-
-void View::enable_show_sampling_points(bool state)
-{
- (void)state;
-
- viewport_->update();
-}
-
-void View::enable_show_analog_minor_grid(bool state)
-{
- (void)state;
-
- viewport_->update();
-}
-
-void View::enable_coloured_bg(bool state)
-{
- coloured_bg_ = state;
- viewport_->update();
-}
-
-bool View::coloured_bg() const
-{
- return coloured_bg_;
-}
-
-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();
-}
-
-shared_ptr<CursorPair> View::cursors() const
-{
- return cursors_;
-}
-
-void View::add_flag(const Timestamp& time)
-{
- flags_.push_back(make_shared<Flag>(*this, time,
- QString("%1").arg(next_flag_text_)));
-
- next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
- (next_flag_text_ + 1);
-
- time_item_appearance_changed(true, true);
-}
-
-void View::remove_flag(shared_ptr<Flag> flag)
-{
- flags_.remove(flag);
- time_item_appearance_changed(true, true);
-}
-
-vector< shared_ptr<Flag> > View::flags() const
-{
- vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
- stable_sort(flags.begin(), flags.end(),
- [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
- return a->time() < b->time();
- });
-
- return flags;
-}
-
-const QPoint& View::hover_point() const
-{
- return hover_point_;
-}
-
-void View::restack_all_trace_tree_items()
-{
- // Make a list of owners that is sorted from deepest first
- const vector<shared_ptr<TraceTreeItem>> items(
- list_by_type<TraceTreeItem>());
- set< TraceTreeItemOwner* > owners;
- for (const auto &r : items)
- owners.insert(r->owner());
- vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
- sort(sorted_owners.begin(), sorted_owners.end(),
- [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
- return a->depth() > b->depth(); });
-
- // Restack the items recursively
- for (auto &o : sorted_owners)
- o->restack_items();
-
- // Animate the items to their destination
- for (const auto &i : items)
- i->animate_to_layout_v_offset();
-}
-
-void View::trigger_event(util::Timestamp location)
-{
- trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
-}
-
-void View::get_scroll_layout(double &length, Timestamp &offset) const
-{
- const pair<Timestamp, Timestamp> extents = get_time_extents();
- length = ((extents.second - extents.first) / scale_).convert_to<double>();
- offset = offset_ / scale_;
-}
-
-void View::set_zoom(double scale, int offset)
-{
- // Reset the "always zoom to fit" feature as the user changed the zoom
- always_zoom_to_fit_ = false;
- always_zoom_to_fit_changed(false);
-
- const Timestamp cursor_offset = offset_ + scale_ * offset;
- const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
- const Timestamp new_offset = cursor_offset - new_scale * offset;
- set_scale_offset(new_scale.convert_to<double>(), new_offset);
-}
-
-void View::calculate_tick_spacing()
-{
- const double SpacingIncrement = 10.0f;
- const double MinValueSpacing = 40.0f;
-
- // Figure out the highest numeric value visible on a label
- const QSize areaSize = viewport_->size();
- const Timestamp max_time = max(fabs(offset_),
- fabs(offset_ + scale_ * areaSize.width()));
-
- double min_width = SpacingIncrement;
- double label_width, tick_period_width;
-
- QFontMetrics m(QApplication::font());
-
- // Copies of the member variables with the same name, used in the calculation
- // and written back afterwards, so that we don't emit signals all the time
- // during the calculation.
- pv::util::Timestamp tick_period = tick_period_;
- pv::util::SIPrefix tick_prefix = tick_prefix_;
- unsigned tick_precision = tick_precision_;
-
- do {
- const double min_period = scale_ * min_width;
-
- const int order = (int)floorf(log10f(min_period));
- const pv::util::Timestamp order_decimal =
- pow(pv::util::Timestamp(10), order);
-
- // Allow for a margin of error so that a scale unit of 1 can be used.
- // Otherwise, for a SU of 1 the tick period will almost always be below
- // the min_period by a small amount - and thus skipped in favor of 2.
- // Note: margin assumes that SU[0] and SU[1] contain the smallest values
- double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
- double tp_with_margin;
- unsigned int unit = 0;
-
- do {
- tp_with_margin = order_decimal.convert_to<double>() *
- (ScaleUnits[unit++] + tp_margin);
- } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
-
- tick_period = order_decimal * ScaleUnits[unit - 1];
- tick_prefix = static_cast<pv::util::SIPrefix>(
- (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
-
- // Precision is the number of fractional digits required, not
- // taking the prefix into account (and it must never be negative)
- tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
-
- tick_period_width = (tick_period / scale_).convert_to<double>();
-
- const QString label_text = Ruler::format_time_with_distance(
- tick_period, max_time, tick_prefix, time_unit_, tick_precision);
-
- label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
- Qt::AlignLeft | Qt::AlignTop, label_text).width() +
- MinValueSpacing;
-
- min_width += SpacingIncrement;
- } while (tick_period_width < label_width);
-
- set_tick_period(tick_period);
- set_tick_prefix(tick_prefix);
- set_tick_precision(tick_precision);
-}
-
-void View::adjust_top_margin()
-{
- assert(viewport_);
-
- const QSize areaSize = viewport_->size();
-
- const pair<int, int> extents = v_extents();
- const int top_margin = owner_visual_v_offset() + extents.first;
- const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
-
- // Do we have empty space at the top while the last trace goes out of screen?
- if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
- const int trace_height = extents.second - extents.first;
-
- // Center everything vertically if there is enough space
- if (areaSize.height() >= trace_height)
- set_v_offset(extents.first -
- ((areaSize.height() - trace_height) / 2));
- else
- // Remove the top margin to make as many traces fit on screen as possible
- set_v_offset(extents.first);
- }
-}
-
-void View::update_scroll()
-{
- assert(viewport_);
- QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
- QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
-
- const QSize areaSize = viewport_->size();
-
- // Set the horizontal scroll bar
- double length = 0;
- Timestamp offset;
- get_scroll_layout(length, offset);
- length = max(length - areaSize.width(), 0.0);
-
- int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
-
- hscrollbar->setPageStep(areaSize.width() / 2);
- hscrollbar->setSingleStep(major_tick_distance);
-
- updating_scroll_ = true;
-
- if (length < MaxScrollValue) {
- hscrollbar->setRange(0, length);
- hscrollbar->setSliderPosition(offset.convert_to<double>());
- } else {
- hscrollbar->setRange(0, MaxScrollValue);
- hscrollbar->setSliderPosition(
- (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
- }
-
- updating_scroll_ = false;
-
- // Set the vertical scrollbar
- vscrollbar->setPageStep(areaSize.height());
- vscrollbar->setSingleStep(areaSize.height() / 8);
-
- const pair<int, int> extents = v_extents();
-
- // Don't change the scrollbar range if there are no traces
- if (extents.first != extents.second)
- vscrollbar->setRange(extents.first - areaSize.height(),
- extents.second);
-
- if (scroll_needs_defaults_)
- set_scroll_default();
-}
-
-void View::reset_scroll()
-{
- scrollarea_->verticalScrollBar()->setRange(0, 0);
-}
-
-void View::set_scroll_default()
-{
- assert(viewport_);
-
- const QSize areaSize = viewport_->size();
-
- const pair<int, int> extents = v_extents();
- const int trace_height = extents.second - extents.first;
-
- // Do all traces fit in the view?
- if (areaSize.height() >= trace_height)
- // Center all traces vertically
- set_v_offset(extents.first -
- ((areaSize.height() - trace_height) / 2));
- else
- // Put the first trace at the top, letting the bottom ones overflow
- set_v_offset(extents.first);
-}
-
-bool View::header_was_shrunk() const
-{
- const int header_pane_width = splitter_->sizes().front();
- const int header_width = header_->extended_size_hint().width();
-
- // Allow for a slight margin of error so that we also accept
- // slight differences when e.g. a label name change increased
- // the overall width
- return (header_pane_width < (header_width - 10));
-}
-
-void View::expand_header_to_fit()
-{
- int splitter_area_width = 0;
- for (int w : splitter_->sizes())
- splitter_area_width += w;
-
- // Make sure the header has enough horizontal space to show all labels fully
- QList<int> pane_sizes;
- pane_sizes.push_back(header_->extended_size_hint().width());
- pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
- splitter_->setSizes(pane_sizes);
-}
-
-void View::update_layout()
-{
- update_scroll();
-}
-
-TraceTreeItemOwner* View::find_prevalent_trace_group(
- const shared_ptr<sigrok::ChannelGroup> &group,
- const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
- &signal_map)
-{
- assert(group);
-
- unordered_set<TraceTreeItemOwner*> owners;
- vector<TraceTreeItemOwner*> owner_list;
-
- // Make a set and a list of all the owners
- for (const auto &channel : group->channels()) {
- for (auto entry : signal_map) {
- if (entry.first->channel() == channel) {
- TraceTreeItemOwner *const o = (entry.second)->owner();
- owner_list.push_back(o);
- owners.insert(o);
- }
- }
- }
-
- // Iterate through the list of owners, and find the most prevalent
- size_t max_prevalence = 0;
- TraceTreeItemOwner *prevalent_owner = nullptr;
- for (TraceTreeItemOwner *owner : owners) {
- const size_t prevalence = count_if(
- owner_list.begin(), owner_list.end(),
- [&](TraceTreeItemOwner *o) { return o == owner; });
- if (prevalence > max_prevalence) {
- max_prevalence = prevalence;
- prevalent_owner = owner;
- }
- }
-
- return prevalent_owner;
-}
-
-vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
- const vector< shared_ptr<sigrok::Channel> > &channels,
- const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
- &signal_map,
- set< shared_ptr<Trace> > &add_list)
-{
- vector< shared_ptr<Trace> > filtered_traces;
-
- for (const auto &channel : channels) {
- for (auto entry : signal_map) {
- if (entry.first->channel() == channel) {
- shared_ptr<Trace> trace = entry.second;
- const auto list_iter = add_list.find(trace);
- if (list_iter == add_list.end())
- continue;
-
- filtered_traces.push_back(trace);
- add_list.erase(list_iter);
- }
- }
- }
-
- return filtered_traces;
-}
-
-void View::determine_time_unit()
-{
- // Check whether we know the sample rate and hence can use time as the unit
- if (time_unit_ == util::TimeUnit::Samples) {
- // Check all signals but...
- for (const shared_ptr<Signal> signal : signals_) {
- const shared_ptr<SignalData> data = signal->data();
-
- // ...only check first segment of each
- const vector< shared_ptr<Segment> > segments = data->segments();
- if (!segments.empty())
- if (segments[0]->samplerate()) {
- set_time_unit(util::TimeUnit::Time);
- break;
- }
- }
- }
-}
-
-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();
- } else if (type == QEvent::Show) {
-
- // This is somewhat of a hack, unfortunately. We cannot use
- // set_v_offset() from within restore_settings() as the view
- // at that point is neither visible nor properly sized.
- // This is the least intrusive workaround I could come up
- // with: set the vertical offset (or scroll defaults) when
- // the view is shown, which happens after all widgets were
- // resized to their final sizes.
- update_layout();
-
- if (!settings_restored_)
- expand_header_to_fit();
-
- if (scroll_needs_defaults_) {
- set_scroll_default();
- scroll_needs_defaults_ = false;
- }
-
- if (saved_v_offset_) {
- set_v_offset(saved_v_offset_);
- saved_v_offset_ = 0;
- }
- }
-
- return QObject::eventFilter(object, event);
-}
-
-void View::resizeEvent(QResizeEvent* event)
-{
- // Only adjust the top margin if we shrunk vertically
- if (event->size().height() < event->oldSize().height())
- adjust_top_margin();
-
- update_layout();
-}
-
-void View::row_item_appearance_changed(bool label, bool content)
-{
- if (label)
- header_->update();
- if (content)
- viewport_->update();
-}
-
-void View::time_item_appearance_changed(bool label, bool content)
-{
- if (label) {
- ruler_->update();
-
- // Make sure the header pane width is updated, too
- update_layout();
- }
-
- if (content)
- viewport_->update();
-}
-
-void View::extents_changed(bool horz, bool vert)
-{
- sticky_events_ |=
- (horz ? TraceTreeItemHExtentsChanged : 0) |
- (vert ? TraceTreeItemVExtentsChanged : 0);
-
- lazy_event_handler_.start();
-}
-
-void View::on_splitter_moved()
-{
- // Setting the maximum width of the header widget doesn't work as
- // expected because the splitter would allow the user to make the
- // pane wider than that, creating empty space as a result.
- // To make this work, we stricly enforce the maximum width by
- // expanding the header unless the user shrunk it on purpose.
- // As we're then setting the width of the header pane, we set the
- // splitter to the maximum allowed position.
- if (!header_was_shrunk())
- expand_header_to_fit();
-}
-
-void View::h_scroll_value_changed(int value)
-{
- if (updating_scroll_)
- return;
-
- // Disable sticky scrolling when user moves the horizontal scroll bar
- // during a running acquisition
- if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
- sticky_scrolling_ = false;
- sticky_scrolling_changed(false);
- }
-
- const int range = scrollarea_->horizontalScrollBar()->maximum();
- if (range < MaxScrollValue)
- set_offset(scale_ * value);
- else {
- double length = 0;
- Timestamp offset;
- get_scroll_layout(length, offset);
- set_offset(scale_ * length * value / MaxScrollValue);
- }
-
- ruler_->update();
- viewport_->update();
-}
-
-void View::v_scroll_value_changed()
-{
- header_->update();
- viewport_->update();
-}
-
-void View::signals_changed()
-{
- using sigrok::Channel;
-
- vector< shared_ptr<Channel> > channels;
- shared_ptr<sigrok::Device> sr_dev;
-
- // Do we need to set the vertical scrollbar to its default position later?
- // We do if there are no traces, i.e. the scroll bar has no range set
- bool reset_scrollbar =
- (scrollarea_->verticalScrollBar()->minimum() ==
- scrollarea_->verticalScrollBar()->maximum());
-
- if (!session_.device()) {
- reset_scroll();
- signals_.clear();
- } else {
- sr_dev = session_.device()->device();
- assert(sr_dev);
- channels = sr_dev->channels();
- }
-
- vector< shared_ptr<TraceTreeItem> > new_top_level_items;
-
- // Make a list of traces that are being added, and a list of traces
- // that are being removed
- const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
- const set<shared_ptr<Trace>> prev_traces(
- prev_trace_list.begin(), prev_trace_list.end());
-
- set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
-
-#ifdef ENABLE_DECODE
- traces.insert(decode_traces_.begin(), decode_traces_.end());
-#endif
-
- set< shared_ptr<Trace> > add_traces;
- set_difference(traces.begin(), traces.end(),
- prev_traces.begin(), prev_traces.end(),
- inserter(add_traces, add_traces.begin()));
-
- set< shared_ptr<Trace> > remove_traces;
- set_difference(prev_traces.begin(), prev_traces.end(),
- traces.begin(), traces.end(),
- inserter(remove_traces, remove_traces.begin()));
-
- // Make a look-up table of sigrok Channels to pulseview Signals
- unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
- signal_map;
- for (const shared_ptr<Signal> &sig : signals_)
- signal_map[sig->base()] = sig;
-
- // Populate channel groups
- if (sr_dev)
- for (auto entry : sr_dev->channel_groups()) {
- const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
-
- if (group->channels().size() <= 1)
- continue;
-
- // Find best trace group to add to
- TraceTreeItemOwner *owner = find_prevalent_trace_group(
- group, signal_map);
-
- // If there is no trace group, create one
- shared_ptr<TraceGroup> new_trace_group;
- if (!owner) {
- new_trace_group.reset(new TraceGroup());
- owner = new_trace_group.get();
- }
-
- // Extract traces for the trace group, removing them from
- // the add list
- const vector< shared_ptr<Trace> > new_traces_in_group =
- extract_new_traces_for_channels(group->channels(),
- signal_map, add_traces);
-
- // Add the traces to the group
- const pair<int, int> prev_v_extents = owner->v_extents();
- int offset = prev_v_extents.second - prev_v_extents.first;
- for (shared_ptr<Trace> trace : new_traces_in_group) {
- assert(trace);
- owner->add_child_item(trace);
-
- const pair<int, int> extents = trace->v_extents();
- if (trace->enabled())
- offset += -extents.first;
- trace->force_to_v_offset(offset);
- if (trace->enabled())
- offset += extents.second;
- }
-
- if (new_trace_group) {
- // Assign proper vertical offsets to each channel in the group
- new_trace_group->restack_items();
-
- // If this is a new group, enqueue it in the new top level
- // items list
- if (!new_traces_in_group.empty())
- new_top_level_items.push_back(new_trace_group);
- }
- }
-
- // Enqueue the remaining logic channels in a group
- vector< shared_ptr<Channel> > logic_channels;
- copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
- [](const shared_ptr<Channel>& c) {
- return c->type() == sigrok::ChannelType::LOGIC; });
-
- const vector< shared_ptr<Trace> > non_grouped_logic_signals =
- extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
-
- if (non_grouped_logic_signals.size() > 0) {
- const shared_ptr<TraceGroup> non_grouped_trace_group(
- make_shared<TraceGroup>());
- for (shared_ptr<Trace> trace : non_grouped_logic_signals)
- non_grouped_trace_group->add_child_item(trace);
-
- non_grouped_trace_group->restack_items();
- new_top_level_items.push_back(non_grouped_trace_group);
- }
-
- // Enqueue the remaining channels as free ungrouped traces
- const vector< shared_ptr<Trace> > new_top_level_signals =
- extract_new_traces_for_channels(channels, signal_map, add_traces);
- new_top_level_items.insert(new_top_level_items.end(),
- new_top_level_signals.begin(), new_top_level_signals.end());
-
- // Enqueue any remaining traces i.e. decode traces
- new_top_level_items.insert(new_top_level_items.end(),
- add_traces.begin(), add_traces.end());
-
- // Remove any removed traces
- for (shared_ptr<Trace> trace : remove_traces) {
- TraceTreeItemOwner *const owner = trace->owner();
- assert(owner);
- owner->remove_child_item(trace);
- }
-
- // Remove any empty trace groups
- for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
- if (group->child_items().size() == 0) {
- remove_child_item(group);
- group.reset();
- }
-
- // Add and position the pending top levels items
- int offset = v_extents().second;
- for (auto item : new_top_level_items) {
- add_child_item(item);
-
- // Position the item after the last item or at the top if there is none
- const pair<int, int> extents = item->v_extents();
-
- if (item->enabled())
- offset += -extents.first;
-
- item->force_to_v_offset(offset);
-
- if (item->enabled())
- offset += extents.second;
- }
-
-
- if (!new_top_level_items.empty())
- // Expand the header pane because the header should become fully
- // visible when new signals are added
- expand_header_to_fit();
-
- update_layout();
-
- header_->update();
- viewport_->update();
-
- if (reset_scrollbar)
- set_scroll_default();
-}
-
-void View::capture_state_updated(int state)
-{
- if (state == Session::Running) {
- set_time_unit(util::TimeUnit::Samples);
-
- trigger_markers_.clear();
-
- // Activate "always zoom to fit" if the setting is enabled and we're
- // the main view of this session (other trace views may be used for
- // zooming and we don't want to mess them up)
- GlobalSettings settings;
- bool state = settings.value(GlobalSettings::Key_View_AlwaysZoomToFit).toBool();
- if (is_main_view_ && state) {
- always_zoom_to_fit_ = true;
- always_zoom_to_fit_changed(always_zoom_to_fit_);
- }
-
- // Enable sticky scrolling if the setting is enabled
- sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
- }
-
- if (state == Session::Stopped) {
- // After acquisition has stopped we need to re-calculate the ticks once
- // as it's otherwise done when the user pans or zooms, which is too late
- calculate_tick_spacing();
-
- // Reset "always zoom to fit", the acquisition has stopped
- if (always_zoom_to_fit_) {
- // Perform a final zoom-to-fit before disabling
- zoom_fit(always_zoom_to_fit_);
- always_zoom_to_fit_ = false;
- always_zoom_to_fit_changed(always_zoom_to_fit_);
- }
- }
-}
-
-void View::perform_delayed_view_update()
-{
- if (always_zoom_to_fit_) {
- zoom_fit(true);
- } else if (sticky_scrolling_) {
- // Make right side of the view sticky
- double length = 0;
- Timestamp offset;
- get_scroll_layout(length, offset);
-
- const QSize areaSize = viewport_->size();
- length = max(length - areaSize.width(), 0.0);
-
- set_offset(scale_ * length);
- }
-
- determine_time_unit();
- update_scroll();
- ruler_->update();
- viewport_->update();
-}
-
-void View::process_sticky_events()
-{
- if (sticky_events_ & TraceTreeItemHExtentsChanged)
- update_layout();
- if (sticky_events_ & TraceTreeItemVExtentsChanged) {
- restack_all_trace_tree_items();
- update_scroll();
- }
-
- // Clear the sticky events
- sticky_events_ = 0;
-}
-
-void View::on_hover_point_changed()
-{
- const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
- list_by_type<TraceTreeItem>());
- for (shared_ptr<TraceTreeItem> r : trace_tree_items)
- r->hover_point_changed();
-}
-
-} // namespace TraceView
-} // namespace views
-} // namespace pv
projects / pulseview.git / blobdiff