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0aa4efb3d9
Seems logical in a C++ code base. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
133 lines
4.3 KiB
C++
133 lines
4.3 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#include <QQmlContext>
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#include <QQuickItem>
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#include <QModelIndex>
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#include "mapwidget.h"
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#include "core/divesite.h"
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#include "core/errorhelper.h"
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#include "core/selection.h"
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#include "map-widget/qmlmapwidgethelper.h"
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#include "qt-models/maplocationmodel.h"
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#include "qt-models/divelocationmodel.h"
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#include "commands/command.h"
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static const QUrl urlMapWidget = QUrl(QStringLiteral("qrc:/qml/MapWidget.qml"));
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static const QUrl urlMapWidgetError = QUrl(QStringLiteral("qrc:/qml/MapWidgetError.qml"));
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static bool isReady = false;
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#define CHECK_IS_READY_RETURN_VOID() \
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if (!isReady) return
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MapWidget *MapWidget::m_instance = nullptr;
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MapWidget::MapWidget(QWidget *parent) : QQuickWidget(parent)
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{
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m_rootItem = nullptr;
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m_mapHelper = nullptr;
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setResizeMode(QQuickWidget::SizeRootObjectToView);
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connect(this, &QQuickWidget::statusChanged, this, &MapWidget::doneLoading);
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connect(&diveListNotifier, &DiveListNotifier::divesChanged, this, &MapWidget::divesChanged);
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connect(&diveListNotifier, &DiveListNotifier::dataReset, this, &MapWidget::reload);
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connect(&diveListNotifier, &DiveListNotifier::settingsChanged, this, &MapWidget::reload);
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setSource(urlMapWidget);
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}
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void MapWidget::doneLoading(QQuickWidget::Status status)
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{
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// the default map widget QML failed; load the error QML.
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if (source() == urlMapWidget && status != QQuickWidget::Ready) {
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report_info("%s failed to load with status: %d", qPrintable(urlMapWidget.toString()), static_cast<int>(status));
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setSource(urlMapWidgetError);
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return;
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} else if (source() == urlMapWidgetError) { // the error QML finished loading.
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return;
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}
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isReady = true;
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m_rootItem = qobject_cast<QQuickItem *>(rootObject());
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m_mapHelper = rootObject()->findChild<MapWidgetHelper *>();
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connect(m_mapHelper, &MapWidgetHelper::selectedDivesChanged, this, &MapWidget::selectedDivesChanged);
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connect(m_mapHelper, &MapWidgetHelper::coordinatesChanged, this, &MapWidget::coordinatesChanged);
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}
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void MapWidget::centerOnDiveSite(struct dive_site *ds)
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{
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CHECK_IS_READY_RETURN_VOID();
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m_mapHelper->centerOnDiveSite(ds);
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}
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void MapWidget::centerOnIndex(const QModelIndex& idx)
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{
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CHECK_IS_READY_RETURN_VOID();
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dive_site *ds = idx.model()->index(idx.row(), LocationInformationModel::DIVESITE).data().value<dive_site *>();
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if (!ds || ds == RECENTLY_ADDED_DIVESITE || !ds->has_gps_location())
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m_mapHelper->centerOnSelectedDiveSite();
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else
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centerOnDiveSite(ds);
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}
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void MapWidget::reload()
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{
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CHECK_IS_READY_RETURN_VOID();
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m_mapHelper->reloadMapLocations();
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m_mapHelper->centerOnSelectedDiveSite();
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}
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bool MapWidget::editMode() const
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{
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return isReady && m_mapHelper->editMode();
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}
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void MapWidget::setSelected(std::vector<dive_site *> divesites)
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{
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CHECK_IS_READY_RETURN_VOID();
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m_mapHelper->setSelected(std::move(divesites));
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m_mapHelper->centerOnSelectedDiveSite();
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}
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void MapWidget::selectedDivesChanged(const QList<int> &list)
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{
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CHECK_IS_READY_RETURN_VOID();
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// We get a list of dive indices, but the selection code wants a list of dives.
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// Therefore, transform them here.
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std::vector<dive *> selection;
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selection.reserve(list.size());
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for (int idx: list) {
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if (idx >= 0 && static_cast<size_t>(idx) < divelog.dives.size())
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selection.push_back(divelog.dives[idx].get());
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}
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setSelection(std::move(selection), current_dive, -1);
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}
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void MapWidget::coordinatesChanged(struct dive_site *ds, const location_t &location)
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{
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Command::editDiveSiteLocation(ds, location);
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}
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void MapWidget::divesChanged(const QVector<dive *> &, DiveField field)
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{
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if (field.divesite)
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reload();
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}
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// Sadly, for reasons out of our control, we can't use a normal singleton for the
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// map widget: In a standard singleton, the object is freed after main() exits.
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// However, if there is an animation running (map zooming), the thread is
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// terminated when the QApplication object is destroyed, which is before main()
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// exits. The thread has a QQmlAnimationTimer that is freed. However, the map widget
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// then tries to free the object itself, leading to a crash. Clearly, a bug in
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// the QML MapWidget / QtQuick ecosystem.
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// To solve this, the mainwindow will destroy the map widget and in the destructor
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// the reference is cleared. Sad.
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MapWidget::~MapWidget()
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{
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m_instance = nullptr;
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}
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MapWidget *MapWidget::instance()
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{
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if (m_instance == nullptr)
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m_instance = new MapWidget();
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return m_instance;
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}
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