Cppcheck - HTML report - digiKam-master-rev-960d3ce42d

# Cppcheck report - digiKam-master-rev-960d3ce42d: ../../core/utilities/geolocation/engine/graphicsview/WidgetGraphicsItem.cpp

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    /* ============================================================
     *
     * This file is a part of digiKam project
     * https://www.digikam.org
     *
     * Date        : 2023-05-15
     * Description : geolocation engine based on Marble.
     *               (c) 2007-2022 Marble Team
     *               https://invent.kde.org/education/marble/-/raw/master/data/credits_authors.html
     *
     * SPDX-FileCopyrightText: 2023-2026 by Gilles Caulier <caulier dot gilles at gmail dot com>
     *
     * SPDX-License-Identifier: LGPL-2.1-or-later
     *
     * ============================================================ */

    #include "WidgetGraphicsItem.h"
    #include "WidgetGraphicsItem_p.h"

    // Qt includes

    #include <QApplication>
    #include <QMouseEvent>
    #include <QPainter>
    #include <QWidget>

    // Local includes

    #include "MarbleWidget.h"
    #include "digikam_debug.h"

    namespace Marble
    {

    WidgetGraphicsItemPrivate::WidgetGraphicsItemPrivate(WidgetGraphicsItem* widgetGraphicsItem,
                                                         MarbleGraphicsItem* parent)
        : ScreenGraphicsItemPrivate(widgetGraphicsItem, parent),
          m_widget                 (nullptr),
          m_marbleWidget           (nullptr),
          m_activeWidget           (nullptr)
    {
        // nothing to do
    }

    WidgetGraphicsItemPrivate::~WidgetGraphicsItemPrivate()
    {
        delete m_widget;
    }

    WidgetGraphicsItem::WidgetGraphicsItem(MarbleGraphicsItem* parent)
        : ScreenGraphicsItem(new WidgetGraphicsItemPrivate(this, parent))
    {
    }

    WidgetGraphicsItem::~WidgetGraphicsItem()
    {
    }

    void WidgetGraphicsItem::setWidget(QWidget* widget)<--- Shadow argument
    {
        Q_D(WidgetGraphicsItem);

        d->m_widget = widget;
        QSize size  = widget->sizeHint().expandedTo(widget->size());
        size        = size.expandedTo(widget->minimumSize());
        size        = size.boundedTo(widget->maximumSize());
        setSize(size);
        widget->resize(size);
    }

    QWidget* WidgetGraphicsItem::widget() const
    {
        Q_D(const WidgetGraphicsItem);

        return d->m_widget;
    }

    void WidgetGraphicsItem::paint(QPainter* painter)
    {
        Q_D(WidgetGraphicsItem);

        if (d->m_widget == nullptr)
        {
            return;
        }

        // Paint widget without a background

        d->m_widget->render(painter, QPoint(0, 0), QRegion(), QWidget::RenderFlags(QWidget::DrawChildren));
    }

    bool WidgetGraphicsItem::eventFilter(QObject* object, QEvent* e)
    {
        Q_D(WidgetGraphicsItem);

        if (!visible() || (d->m_widget == nullptr))
        {
            return false;
        }

        MarbleWidget* widget = dynamic_cast<MarbleWidget*>(object);<--- Shadow local variable

        if (!widget)
        {
            return ScreenGraphicsItem::eventFilter(object, e);
        }

        // Delayed initialization

        d->m_marbleWidget = widget;

        Q_ASSERT(d->m_marbleWidget);

        if (
               (e->type() == QEvent::MouseButtonDblClick)
            || (e->type() == QEvent::MouseMove)
            || (e->type() == QEvent::MouseButtonPress)
            || (e->type() == QEvent::MouseButtonRelease)
           )
        {
            // Mouse events are forwarded to the underlying widget

            QMouseEvent* event                     = static_cast<QMouseEvent*>(e);
            const QVector<QPointF> widgetPositions = absolutePositions();
            QRectF widgetItemRect;
            QPoint shiftedPos;
            QVector<QPointF>::ConstIterator it     = widgetPositions.begin();
            bool foundRightPosition                = false;

            for ( ; !foundRightPosition && (it != widgetPositions.end()) ; ++it)
            {
                widgetItemRect = QRectF(*it, size());

                if (widgetItemRect.contains(event->pos()))
                {
                    foundRightPosition = true;
                    shiftedPos         = event->pos() - widgetItemRect.topLeft().toPoint();
                }
            }

            if (foundRightPosition)
            {
                QWidget* child = d->m_widget->childAt(shiftedPos);

                if (d->m_activeWidget && (d->m_activeWidget != child))
                {
                    QEvent leaveEvent(QEvent::Leave);
                    QApplication::sendEvent(d->m_activeWidget, &leaveEvent);
                }

                if (child && (d->m_activeWidget != child))
                {
                    QEvent enterEvent(QEvent::Enter);
                    QApplication::sendEvent(child, &enterEvent);
                }

                d->m_activeWidget = child;

                if (child)
                {
                    shiftedPos              -= child->pos(); // transform to children's coordinates
                    QMouseEvent shiftedEvent = QMouseEvent(e->type(), shiftedPos,

    #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))

                                                           event->globalPosition(),

    #else

                                                           event->globalPos(),

    #endif
                                                           event->button(), event->buttons(),
                                                           event->modifiers());

                    if (QApplication::sendEvent(child, &shiftedEvent))
                    {
                        d->m_marbleWidget->setCursor(d->m_widget->cursor());

                        return true;
                    }
                }
            }

            else
            {
                if (d->m_activeWidget)
                {
                    QEvent leaveEvent(QEvent::Leave);
                    QApplication::sendEvent(d->m_activeWidget, &leaveEvent);
                    d->m_activeWidget = nullptr;
                }
            }
        }

        return ScreenGraphicsItem::eventFilter(object, e);
    }

    } // namespace Marble