* Copyright (C) 2013 by Eike Hein <hein@kde.org> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "draghelper.h"
#include <QApplication>
#include <QDrag>
#include <QMimeData>
#include <QQuickItem>
#include <QIcon>
#include <QPixmap>
#include <QPointer>
DragHelper::DragHelper(QObject* parent) : QObject(parent)
, m_dragIconSize(32)
{
}
DragHelper::~DragHelper()
{
}
int DragHelper::dragIconSize() const
{
return m_dragIconSize;
}
void DragHelper::setDragIconSize(int size)
{
if (m_dragIconSize != size) {
m_dragIconSize = size;
emit dragIconSizeChanged();
}
}
bool DragHelper::isDrag(int oldX, int oldY, int newX, int newY) const
{
return ((QPoint(oldX, oldY) - QPoint(newX, newY)).manhattanLength() >= QApplication::startDragDistance());
}
void DragHelper::startDrag(QQuickItem *item, const QString &mimeType,
const QVariant &mimeData, const QUrl &url, const QIcon &icon)
{
QMetaObject::invokeMethod(this, "startDragInternal", Qt::QueuedConnection,
Q_ARG(QQuickItem*, item),
Q_ARG(QString, mimeType),
Q_ARG(QVariant, mimeData),
Q_ARG(QUrl, url),
Q_ARG(QIcon, icon));
}
void DragHelper::startDragInternal(QQuickItem *item, const QString &mimeType,
const QVariant &mimeData, const QUrl &url, const QIcon &icon) const
{
QPointer<QQuickItem> grabber = item;
QList<QUrl> urlList;
urlList.append(url);
QMimeData *dragData = new QMimeData();
dragData->setData(mimeType, mimeData.toByteArray());
dragData->setData("application/x-orgkdeplasmataskmanager_taskbuttonitem", mimeData.toByteArray());
dragData->setUrls(urlList);
QDrag *drag = new QDrag(static_cast<QQuickItem *>(parent()));
drag->setMimeData(dragData);
drag->setPixmap(icon.pixmap(QSize(m_dragIconSize, m_dragIconSize)));
grabber->grabMouse();
drag->exec();
if (grabber) {
grabber->ungrabMouse();
}
emit dropped();
}
