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194 | /* ============================================================
*
* 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: 2023-2024 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)
{
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);
if (!widget)
{
return ScreenGraphicsItem::eventFilter(object, e);
}
if (d->m_marbleWidget != widget)<--- Condition 'd->m_marbleWidget!=widget' is redundant
{
// Delayed initialization
d->m_marbleWidget = widget;<--- Assignment '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
|