+++ /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 <cassert>
-#include <climits>
-#include <cmath>
-#include <mutex>
-#include <unordered_set>
-
-#include <QEvent>
-#include <QMouseEvent>
-#include <QScrollBar>
-
-#include "cursorheader.h"
-#include "decodetrace.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 boost::shared_lock;
-using boost::shared_mutex;
-using pv::data::SignalData;
-using std::back_inserter;
-using std::deque;
-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_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 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)),
- _cursorheader(new CursorHeader(*this)),
- _header(new Header(*this)),
- _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(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(_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()),
- _cursorheader, SLOT(clear_selection()));
- connect(_cursorheader, SIGNAL(selection_changed()),
- _header, SLOT(clear_selection()));
-
- connect(_header, SIGNAL(selection_changed()),
- this, SIGNAL(selection_changed()));
- connect(_cursorheader, 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);
- _cursorheader->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
- _cursorheader->raise();
- _header->raise();
-}
-
-SigSession& View::session()
-{
- return _session;
-}
-
-const SigSession& 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;
-}
-
-double View::scale() const
-{
- return _scale;
-}
-
-double View::offset() const
-{
- return _offset;
-}
-
-int View::owner_visual_v_offset() const
-{
- return -_v_offset;
-}
-
-unsigned int View::depth() const
-{
- return 0;
-}
-
-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);
- samplerate = max(samplerate, d->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;
-
- update_scroll();
- _ruler->update();
- _cursorheader->update();
- _viewport->update();
- scale_offset_changed();
-}
-
-set< shared_ptr<SignalData> > View::get_visible_data() const
-{
- shared_lock<shared_mutex> lock(session().signals_mutex());
- const vector< 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
-{
- const set< shared_ptr<SignalData> > visible_data = get_visible_data();
- if (visible_data.empty())
- return make_pair(0.0, 0.0);
-
- double left_time = DBL_MAX, right_time = DBL_MIN;
- for (const shared_ptr<SignalData> d : visible_data)
- {
- const double start_time = d->get_start_time();
- double samplerate = d->samplerate();
- samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
-
- left_time = min(left_time, start_time);
- right_time = max(right_time, start_time +
- d->get_max_sample_count() / samplerate);
- }
-
- 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;
- _cursorheader->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);
- _cursorheader->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::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::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());
-
- const pair<int, int> extents = v_extents();
- const int extra_scroll_height = (extents.second - extents.first) / 4;
- verticalScrollBar()->setRange(extents.first - extra_scroll_height,
- extents.first + extra_scroll_height);
-}
-
-void View::update_layout()
-{
- setViewportMargins(
- _header->sizeHint().width() - pv::view::Header::BaselineOffset,
- _ruler->sizeHint().height(), 0, 0);
- _ruler->setGeometry(_viewport->x(), 0,
- _viewport->width(), _viewport->y());
- _cursorheader->setGeometry(
- _viewport->x(),
- _ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2,
- _viewport->width(), _cursorheader->sizeHint().height());
- _header->setGeometry(0, _viewport->y(),
- _header->sizeHint().width(), _viewport->height());
- update_scroll();
-}
-
-void View::paint_label(QPainter &p, int right, bool hover)
-{
- (void)p;
- (void)right;
- (void)hover;
-}
-
-QRectF View::label_rect(int right)
-{
- (void)right;
- return QRectF();
-}
-
-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 || object == _cursorheader)
- _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::appearance_changed(bool label, bool content)
-{
- if (label)
- _header->update();
- if (content)
- _viewport->update();
-}
-
-void View::extents_changed(bool horz, bool vert)
-{
- _sticky_events |=
- (horz ? SelectableItemHExtentsChanged : 0) |
- (vert ? SelectableItemVExtentsChanged : 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();
- _cursorheader->update();
- _viewport->update();
-}
-
-void View::v_scroll_value_changed(int value)
-{
- _v_offset = value;
- _header->update();
- _viewport->update();
-}
-
-void View::signals_changed()
-{
- // Populate the traces
- clear_child_items();
-
- shared_lock<shared_mutex> lock(session().signals_mutex());
- const vector< shared_ptr<Signal> > &sigs(session().signals());
- for (auto s : sigs)
- add_child_item(s);
-
-#ifdef ENABLE_DECODE
- const vector< shared_ptr<DecodeTrace> > decode_sigs(
- session().get_decode_signals());
- for (auto s : decode_sigs)
- add_child_item(s);
-#endif
-
- // Create the initial layout
- int offset = 0;
- for (shared_ptr<RowItem> r : *this) {
- const pair<int, int> extents = r->v_extents();
- if (r->enabled())
- offset += -extents.first;
- r->force_to_v_offset(offset);
- if (r->enabled())
- offset += extents.second;
- }
-
- update_layout();
-}
-
-void View::data_updated()
-{
- // Update the scroll bars
- update_scroll();
-
- // Repaint the view
- _viewport->update();
-}
-
-void View::marker_time_changed()
-{
- _cursorheader->update();
- _viewport->update();
-}
-
-void View::on_signals_moved()
-{
- update_scroll();
- signals_moved();
-}
-
-void View::process_sticky_events()
-{
- if (_sticky_events & SelectableItemHExtentsChanged)
- update_layout();
- if (_sticky_events & SelectableItemVExtentsChanged)
- restack_all_row_items();
-
- // 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
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