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subsurface/desktop-widgets/mapwidget.cpp
Berthold Stoeger 6b835710bc map: use value semantics for MapLocation
This makes memory management more simple, as not explicit deletion
is necessary.

A rather large commit, because changing QVector<> to std::vector<>
is propagated up the call chain.

Adds a new range_contains() helper function for collection
types such as std::vector<>. I didn't want to call it
contains(), since we already have a contains function
for strings and let's keep argument overloading simple.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2024-08-13 19:28:30 +02:00

133 lines
4.3 KiB
C++

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