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/*
This file is part of the KDE project
SPDX-FileCopyrightText: 2008 Rafael Fernández López <ereslibre@kde.org>
SPDX-FileCopyrightText: 2008 Kevin Ottens <ervin@kde.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "kwidgetitemdelegatepool_p.h"
#include <QAbstractItemView>
#include <QAbstractProxyModel>
#include <QApplication>
#include <QHash>
#include <QInputEvent>
#include <QList>
#include <QMetaMethod>
#include <QWidget>
#include <qobjectdefs.h>
#include "kwidgetitemdelegate.h"
#include "kwidgetitemdelegate_p.h"
#include <kitemviews_debug.h>
/**
Private class that helps to provide binary compatibility between releases.
@internal
*/
//@cond PRIVATE
class KWidgetItemDelegateEventListener : public QObject
{
public:
KWidgetItemDelegateEventListener(KWidgetItemDelegatePoolPrivate *poolPrivate, QObject *parent = nullptr)
: QObject(parent)
, poolPrivate(poolPrivate)
{
}
bool eventFilter(QObject *watched, QEvent *event) override;
private:
KWidgetItemDelegatePoolPrivate *const poolPrivate;
};
KWidgetItemDelegatePoolPrivate::KWidgetItemDelegatePoolPrivate(KWidgetItemDelegate *d)
: delegate(d)
, eventListener(new KWidgetItemDelegateEventListener(this))
{
}
KWidgetItemDelegatePool::KWidgetItemDelegatePool(KWidgetItemDelegate *delegate)
: d(new KWidgetItemDelegatePoolPrivate(delegate))
{
}
KWidgetItemDelegatePool::~KWidgetItemDelegatePool()
{
delete d->eventListener;
delete d;
}
QList<QWidget *>
KWidgetItemDelegatePool::findWidgets(const QPersistentModelIndex &idx, const QStyleOptionViewItem &option, UpdateWidgetsEnum updateWidgets) const
{
QList<QWidget *> result;
if (!idx.isValid()) {
return result;
}
QModelIndex index;
if (const QAbstractProxyModel *proxyModel = qobject_cast<const QAbstractProxyModel *>(idx.model())) {
index = proxyModel->mapToSource(idx);
} else {
index = idx;
}
if (!index.isValid()) {
return result;
}
if (d->usedWidgets.contains(index)) {
result = d->usedWidgets[index];
} else {
result = d->delegate->createItemWidgets(index);
d->allocatedWidgets << result;
d->usedWidgets[index] = result;
for (QWidget *widget : std::as_const(result)) {
d->widgetInIndex[widget] = index;
widget->setParent(d->delegate->d->itemView->viewport());
widget->installEventFilter(d->eventListener);
widget->setVisible(true);
}
}
if (updateWidgets == UpdateWidgets) {
for (QWidget *widget : std::as_const(result)) {
widget->setVisible(true);
}
d->delegate->updateItemWidgets(result, option, idx);
for (QWidget *widget : std::as_const(result)) {
widget->move(widget->x() + option.rect.left(), widget->y() + option.rect.top());
}
}
return result;
}
QList<QWidget *> KWidgetItemDelegatePool::invalidIndexesWidgets() const
{
QList<QWidget *> result;
QHashIterator<QWidget *, QPersistentModelIndex> i(d->widgetInIndex);
while (i.hasNext()) {
i.next();
const QAbstractProxyModel *proxyModel = qobject_cast<const QAbstractProxyModel *>(d->delegate->d->model);
QModelIndex index;
if (proxyModel) {
index = proxyModel->mapFromSource(i.value());
} else {
index = i.value();
}
if (!index.isValid()) {
result << i.key();
}
}
return result;
}
void KWidgetItemDelegatePool::fullClear()
{
d->clearing = true;
qDeleteAll(d->widgetInIndex.keys());
d->clearing = false;
d->allocatedWidgets.clear();
d->usedWidgets.clear();
d->widgetInIndex.clear();
}
bool KWidgetItemDelegateEventListener::eventFilter(QObject *watched, QEvent *event)
{
QWidget *widget = static_cast<QWidget *>(watched);
if (event->type() == QEvent::Destroy && !poolPrivate->clearing) {
qCWarning(KITEMVIEWS_LOG) << "User of KWidgetItemDelegate should not delete widgets created by createItemWidgets!";
// assume the application has kept a list of widgets and tries to delete them manually
// they have been reparented to the view in any case, so no leaking occurs
poolPrivate->widgetInIndex.remove(widget);
QWidget *viewport = poolPrivate->delegate->d->itemView->viewport();
QApplication::sendEvent(viewport, event);
}
if (dynamic_cast<QInputEvent *>(event) && !poolPrivate->delegate->blockedEventTypes(widget).contains(event->type())) {
QWidget *viewport = poolPrivate->delegate->d->itemView->viewport();
switch (event->type()) {
case QEvent::MouseMove:
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
case QEvent::MouseButtonDblClick: {
QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
QMouseEvent evt(event->type(),
viewport->mapFromGlobal(mouseEvent->globalPos()),
mouseEvent->button(),
mouseEvent->buttons(),
mouseEvent->modifiers());
QApplication::sendEvent(viewport, &evt);
} break;
case QEvent::Wheel: {
QWheelEvent *wheelEvent = static_cast<QWheelEvent *>(event);
QWheelEvent evt(viewport->mapFromGlobal(wheelEvent->position().toPoint()),
viewport->mapFromGlobal(wheelEvent->globalPosition().toPoint()),
wheelEvent->pixelDelta(),
wheelEvent->angleDelta(),
wheelEvent->buttons(),
wheelEvent->modifiers(),
wheelEvent->phase(),
wheelEvent->inverted(),
wheelEvent->source());
QApplication::sendEvent(viewport, &evt);
} break;
case QEvent::TabletMove:
case QEvent::TabletPress:
case QEvent::TabletRelease:
case QEvent::TabletEnterProximity:
case QEvent::TabletLeaveProximity: {
QTabletEvent *tabletEvent = static_cast<QTabletEvent *>(event);
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
QTabletEvent evt(event->type(),
tabletEvent->pointingDevice(),
viewport->mapFromGlobal(tabletEvent->globalPosition()),
tabletEvent->globalPosition(),
tabletEvent->pressure(),
tabletEvent->xTilt(),
tabletEvent->yTilt(),
tabletEvent->tangentialPressure(),
tabletEvent->rotation(),
tabletEvent->z(),
tabletEvent->modifiers(),
tabletEvent->button(),
tabletEvent->buttons());
#else
QTabletEvent evt(event->type(),
QPointF(viewport->mapFromGlobal(tabletEvent->globalPos())),
tabletEvent->globalPosF(),
tabletEvent->deviceType(),
tabletEvent->pointerType(),
tabletEvent->pressure(),
tabletEvent->xTilt(),
tabletEvent->yTilt(),
tabletEvent->tangentialPressure(),
tabletEvent->rotation(),
tabletEvent->z(),
tabletEvent->modifiers(),
tabletEvent->uniqueId(),
tabletEvent->button(),
tabletEvent->buttons());
#endif
QApplication::sendEvent(viewport, &evt);
break;
}
default:
QApplication::sendEvent(viewport, event);
break;
}
}
return QObject::eventFilter(watched, event);
}
//@endcond
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