File indexing completed on 2024-05-12 17:08:47

 /*
     SPDX-FileCopyrightText: 2022 Kai Uwe Broulik <kde@broulik.de>
 
     SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 #include "draghelper.h"
 
 #include <QDrag>
 #include <QGuiApplication>
 #include <QMetaObject>
 #include <QMimeData>
 #include <QQuickWindow>
 #include <QStyleHints>
 
 DragHelper::DragHelper(QObject *parent)
     : QObject(parent)
 {
 }
 
 DragHelper::~DragHelper() = default;
 
 bool DragHelper::dragActive() const
 {
     return m_dragActive;
 }
 
 int DragHelper::dragPixmapSize() const
 {
     return m_dragPixmapSize;
 }
 
 void DragHelper::setDragPixmapSize(int dragPixmapSize)
 {
     if (m_dragPixmapSize != dragPixmapSize) {
         m_dragPixmapSize = dragPixmapSize;
         Q_EMIT dragPixmapSizeChanged();
     }
 }
 
 bool DragHelper::isDrag(int oldX, int oldY, int newX, int newY) const
 {
     return ((QPoint(oldX, oldY) - QPoint(newX, newY)).manhattanLength() >= qApp->styleHints()->startDragDistance());
 }
 
 void DragHelper::startDrag(QQuickItem *item, const QUrl &url, const QString &iconName)
 {
     startDrag(item, url, QIcon::fromTheme(iconName).pixmap(m_dragPixmapSize, m_dragPixmapSize));
 }
 
 void DragHelper::startDrag(QQuickItem *item, const QUrl &url, const QPixmap &pixmap)
 {
     // This allows the caller to return, making sure we don't crash if
     // the caller is destroyed mid-drag
 
     QMetaObject::invokeMethod(this, "doDrag", Qt::QueuedConnection, Q_ARG(QQuickItem *, item), Q_ARG(QUrl, url), Q_ARG(QPixmap, pixmap));
 }
 
 void DragHelper::doDrag(QQuickItem *item, const QUrl &url, const QPixmap &pixmap)
 {
     if (item && item->window() && item->window()->mouseGrabberItem()) {
         item->window()->mouseGrabberItem()->ungrabMouse();
     }
 
     QDrag *drag = new QDrag(item);
 
     QMimeData *mimeData = new QMimeData();
 
     if (!url.isEmpty()) {
         mimeData->setUrls(QList<QUrl>() << url);
     }
 
     drag->setMimeData(mimeData);
 
     if (!pixmap.isNull()) {
         drag->setPixmap(pixmap);
     }
 
     m_dragActive = true;
     Q_EMIT dragActiveChanged();
 
     drag->exec();
 
     m_dragActive = false;
     Q_EMIT dragActiveChanged();
 }