+++ /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
- */
-
-#ifdef ENABLE_DECODE
-#include <libsigrokdecode/libsigrokdecode.h>
-#endif
-
-#include <extdef.h>
-
-#include <cassert>
-#include <climits>
-#include <cmath>
-#include <mutex>
-#include <unordered_set>
-
-#include <QApplication>
-#include <QEvent>
-#include <QFontMetrics>
-#include <QMouseEvent>
-#include <QScrollBar>
-
-#include <libsigrokcxx/libsigrokcxx.hpp>
-
-#include "decodetrace.hpp"
-#include "header.hpp"
-#include "logicsignal.hpp"
-#include "ruler.hpp"
-#include "signal.hpp"
-#include "tracegroup.hpp"
-#include "view.hpp"
-#include "viewport.hpp"
-
-#include "pv/session.hpp"
-#include "pv/devices/device.hpp"
-#include "pv/data/logic.hpp"
-#include "pv/data/logicsegment.hpp"
-#include "pv/util.hpp"
-
-using boost::shared_lock;
-using boost::shared_mutex;
-
-using pv::data::SignalData;
-using pv::data::Segment;
-using pv::util::format_time;
-
-using std::deque;
-using std::dynamic_pointer_cast;
-using std::list;
-using std::lock_guard;
-using std::max;
-using std::make_pair;
-using std::min;
-using std::pair;
-using std::set;
-using std::shared_ptr;
-using std::unordered_map;
-using std::unordered_set;
-using std::vector;
-using std::weak_ptr;
-
-namespace pv {
-namespace view {
-
-const double View::MaxScale = 1e9;
-const double View::MinScale = 1e-15;
-
-const int View::MaxScrollValue = INT_MAX / 2;
-
-const int View::ScaleUnits[3] = {1, 2, 5};
-
-View::View(Session &session, QWidget *parent) :
- QAbstractScrollArea(parent),
- session_(session),
- viewport_(new Viewport(*this)),
- ruler_(new Ruler(*this)),
- header_(new Header(*this)),
- scale_(1e-3),
- offset_(0),
- updating_scroll_(false),
- tick_period_(0.0),
- tick_prefix_(0),
- show_cursors_(false),
- cursors_(new CursorPair(*this)),
- next_flag_text_('A'),
- 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()));
-
- connect(&session_, SIGNAL(signals_changed()),
- this, SLOT(signals_changed()));
- connect(&session_, SIGNAL(capture_state_changed(int)),
- this, SLOT(data_updated()));
- connect(&session_, SIGNAL(data_received()),
- this, SLOT(data_updated()));
- connect(&session_, SIGNAL(frame_ended()),
- this, SLOT(data_updated()));
-
- 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(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);
-
- setViewport(viewport_);
-
- viewport_->installEventFilter(this);
- ruler_->installEventFilter(this);
- header_->installEventFilter(this);
-
- // 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_;
-}
-
-View* View::view()
-{
- return this;
-}
-
-const View* View::view() const
-{
- return this;
-}
-
-Viewport* View::viewport()
-{
- return viewport_;
-}
-
-const Viewport* View::viewport() const
-{
- return viewport_;
-}
-
-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());
- return items;
-}
-
-double View::scale() const
-{
- return scale_;
-}
-
-double View::offset() const
-{
- return offset_;
-}
-
-int View::owner_visual_v_offset() const
-{
- return -verticalScrollBar()->sliderPosition();
-}
-
-void View::set_v_offset(int offset)
-{
- verticalScrollBar()->setSliderPosition(offset);
- header_->update();
- viewport_->update();
-}
-
-unsigned int View::depth() const
-{
- return 0;
-}
-
-unsigned int View::tick_prefix() const
-{
- return tick_prefix_;
-}
-
-double View::tick_period() const
-{
- return tick_period_;
-}
-
-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()
-{
- const pair<double, double> extents = get_time_extents();
- const double delta = extents.second - extents.first;
- if (delta < 1e-12)
- return;
-
- assert(viewport_);
- const int w = viewport_->width();
- if (w <= 0)
- return;
-
- const double scale = max(min(delta / w, MaxScale), MinScale);
- set_scale_offset(scale, 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;
-
- double samplerate = 0.0;
- for (const shared_ptr<SignalData> d : visible_data) {
- assert(d);
- const vector< shared_ptr<Segment> > segments =
- d->segments();
- for (const shared_ptr<Segment> &s : segments)
- samplerate = max(samplerate, s->samplerate());
- }
-
- if (samplerate == 0.0)
- return;
-
- assert(viewport_);
- const int w = viewport_->width();
- if (w <= 0)
- return;
-
- set_zoom(1.0 / samplerate, w / 2);
-}
-
-void View::set_scale_offset(double scale, double offset)
-{
- scale_ = scale;
- offset_ = offset;
-
- calculate_tick_spacing();
-
- update_scroll();
- ruler_->update();
- viewport_->update();
- scale_offset_changed();
-}
-
-set< shared_ptr<SignalData> > View::get_visible_data() const
-{
- shared_lock<shared_mutex> lock(session().signals_mutex());
- const unordered_set< shared_ptr<Signal> > &sigs(session().signals());
-
- // Make a set of all the visible data objects
- set< shared_ptr<SignalData> > visible_data;
- for (const shared_ptr<Signal> sig : sigs)
- if (sig->enabled())
- visible_data.insert(sig->data());
-
- return visible_data;
-}
-
-pair<double, double> View::get_time_extents() const
-{
- double left_time = DBL_MAX, right_time = DBL_MIN;
- 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 double start_time = s->start_time();
- left_time = min(left_time, start_time);
- right_time = max(right_time, start_time +
- d->max_sample_count() / samplerate);
- }
- }
-
- if (left_time == DBL_MAX && right_time == DBL_MIN)
- return make_pair(0.0, 0.0);
-
- assert(left_time < right_time);
- return make_pair(left_time, right_time);
-}
-
-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();
-}
-
-std::shared_ptr<CursorPair> View::cursors() const
-{
- return cursors_;
-}
-
-void View::add_flag(double time)
-{
- flags_.push_back(shared_ptr<Flag>(new 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(std::shared_ptr<Flag> flag)
-{
- flags_.remove(flag);
- time_item_appearance_changed(true, true);
-}
-
-vector< std::shared_ptr<Flag> > View::flags() const
-{
- vector< std::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::update_viewport()
-{
- assert(viewport_);
- viewport_->update();
- header_->update();
-}
-
-void View::restack_all_row_items()
-{
- // Make a set of owners
- unordered_set< RowItemOwner* > owners;
- for (const auto &r : *this)
- owners.insert(r->owner());
-
- // Make a list that is sorted from deepest first
- vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end());
- sort(sorted_owners.begin(), sorted_owners.end(),
- [](const RowItemOwner* a, const RowItemOwner *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 &r : *this)
- r->animate_to_layout_v_offset();
-}
-
-void View::get_scroll_layout(double &length, double &offset) const
-{
- const pair<double, double> extents = get_time_extents();
- length = (extents.second - extents.first) / scale_;
- offset = offset_ / scale_;
-}
-
-void View::set_zoom(double scale, int offset)
-{
- const double cursor_offset = offset_ + scale_ * offset;
- const double new_scale = max(min(scale, MaxScale), MinScale);
- const double new_offset = cursor_offset - new_scale * offset;
- set_scale_offset(new_scale, new_offset);
-}
-
-void View::calculate_tick_spacing()
-{
- const double SpacingIncrement = 32.0f;
- const double MinValueSpacing = 32.0f;
-
- double min_width = SpacingIncrement, typical_width;
-
- QFontMetrics m(QApplication::font());
-
- do {
- const double min_period = scale_ * min_width;
-
- const int order = (int)floorf(log10f(min_period));
- const double order_decimal = pow(10.0, order);
-
- unsigned int unit = 0;
-
- do {
- tick_period_ = order_decimal * ScaleUnits[unit++];
- } while (tick_period_ < min_period &&
- unit < countof(ScaleUnits));
-
- tick_prefix_ = (order - pv::util::FirstSIPrefixPower) / 3;
-
- typical_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
- Qt::AlignLeft | Qt::AlignTop,
- format_time(offset_, tick_prefix_)).width() +
- MinValueSpacing;
-
- min_width += SpacingIncrement;
-
- } while(typical_width > tick_period_ / 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);
-
- int major_tick_distance = tick_period_ / scale_;
-
- horizontalScrollBar()->setPageStep(areaSize.width() / 2);
- horizontalScrollBar()->setSingleStep(major_tick_distance);
-
- 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()->setSingleStep(areaSize.height() / 8);
-
- const pair<int, int> extents = v_extents();
- verticalScrollBar()->setRange(extents.first - (areaSize.height() / 2),
- extents.second - (areaSize.height() / 2));
-}
-
-void View::update_layout()
-{
- setViewportMargins(
- header_->sizeHint().width() - pv::view::Header::BaselineOffset,
- ruler_->sizeHint().height(), 0, 0);
- ruler_->setGeometry(viewport_->x(), 0,
- viewport_->width(), ruler_->extended_size_hint().height());
- header_->setGeometry(0, viewport_->y(),
- header_->extended_size_hint().width(), viewport_->height());
- update_scroll();
-}
-
-void View::paint_label(QPainter &p, const QRect &rect, bool hover)
-{
- (void)p;
- (void)rect;
- (void)hover;
-}
-
-QRectF View::label_rect(const QRectF &rect)
-{
- (void)rect;
- return QRectF();
-}
-
-bool View::add_channels_to_owner(
- const vector< shared_ptr<sigrok::Channel> > &channels,
- RowItemOwner *owner, int &offset,
- unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
- &signal_map,
- std::function<bool (shared_ptr<RowItem>)> filter_func)
-{
- bool any_added = false;
-
- assert(owner);
-
- for (const auto &channel : channels)
- {
- const auto iter = signal_map.find(channel);
- if (iter == signal_map.end() ||
- (filter_func && !filter_func((*iter).second)))
- continue;
-
- shared_ptr<RowItem> row_item = (*iter).second;
- owner->add_child_item(row_item);
- apply_offset(row_item, offset);
- signal_map.erase(iter);
-
- any_added = true;
- }
-
- return any_added;
-}
-
-void View::apply_offset(shared_ptr<RowItem> row_item, int &offset) {
- assert(row_item);
- const pair<int, int> extents = row_item->v_extents();
- if (row_item->enabled())
- offset += -extents.first;
- row_item->force_to_v_offset(offset);
- if (row_item->enabled())
- offset += extents.second;
-}
-
-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:
- case QEvent::TouchBegin:
- case QEvent::TouchUpdate:
- case QEvent::TouchEnd:
- return false;
-
- default:
- return QAbstractScrollArea::viewportEvent(e);
- }
-}
-
-void View::resizeEvent(QResizeEvent*)
-{
- 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();
- if (content)
- viewport_->update();
-}
-
-void View::extents_changed(bool horz, bool vert)
-{
- sticky_events_ |=
- (horz ? RowItemHExtentsChanged : 0) |
- (vert ? RowItemVExtentsChanged : 0);
- lazy_event_handler_.start();
-}
-
-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()
-{
- header_->update();
- viewport_->update();
-}
-
-void View::signals_changed()
-{
- int offset = 0;
-
- // Populate the traces
- clear_child_items();
-
- const auto device = session_.device();
- if (!device)
- return;
-
- shared_ptr<sigrok::Device> sr_dev = device->device();
- assert(sr_dev);
-
- // Collect a set of signals
- unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
- signal_map;
-
- shared_lock<shared_mutex> lock(session_.signals_mutex());
- const unordered_set< shared_ptr<Signal> > &sigs(session_.signals());
-
- for (const shared_ptr<Signal> &sig : sigs)
- signal_map[sig->channel()] = sig;
-
- // Populate channel groups
- for (auto entry : sr_dev->channel_groups())
- {
- const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
-
- if (group->channels().size() <= 1)
- continue;
-
- shared_ptr<TraceGroup> trace_group(new TraceGroup());
- int child_offset = 0;
- if (add_channels_to_owner(group->channels(),
- trace_group.get(), child_offset, signal_map))
- {
- add_child_item(trace_group);
- apply_offset(trace_group, offset);
- }
- }
-
- // Add the remaining logic channels
- shared_ptr<TraceGroup> logic_trace_group(new TraceGroup());
- int child_offset = 0;
-
- if (add_channels_to_owner(sr_dev->channels(),
- logic_trace_group.get(), child_offset, signal_map,
- [](shared_ptr<RowItem> r) -> bool {
- return dynamic_pointer_cast<LogicSignal>(r) != nullptr;
- }))
-
- {
- add_child_item(logic_trace_group);
- apply_offset(logic_trace_group, offset);
- }
-
- // Add the remaining channels
- add_channels_to_owner(sr_dev->channels(), this, offset, signal_map);
- assert(signal_map.empty());
-
- // Add decode signals
-#ifdef ENABLE_DECODE
- const vector< shared_ptr<DecodeTrace> > decode_sigs(
- session().get_decode_signals());
- for (auto s : decode_sigs) {
- add_child_item(s);
- apply_offset(s, offset);
- }
-#endif
-
- update_layout();
-}
-
-void View::data_updated()
-{
- // Update the scroll bars
- update_scroll();
-
- // Repaint the view
- viewport_->update();
-}
-
-void View::process_sticky_events()
-{
- if (sticky_events_ & RowItemHExtentsChanged)
- update_layout();
- if (sticky_events_ & RowItemVExtentsChanged) {
- restack_all_row_items();
- update_scroll();
- }
-
- // Clear the sticky events
- sticky_events_ = 0;
-}
-
-void View::on_hover_point_changed()
-{
- for (shared_ptr<RowItem> r : *this)
- r->hover_point_changed();
-}
-
-} // namespace view
-} // namespace pv
projects / pulseview.git / blobdiff