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97 lines
3.3 KiB
97 lines
3.3 KiB
/*************************************************************************** |
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* Copyright (C) 2013 by Eike Hein <hein@kde.org> * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the * |
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* Free Software Foundation, Inc., * |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . * |
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***************************************************************************/ |
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#include "draghelper.h" |
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#include <QApplication> |
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#include <QDrag> |
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#include <QMimeData> |
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#include <QQuickItem> |
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#include <QQuickWindow> |
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DragHelper::DragHelper(QObject* parent) : QObject(parent) |
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, m_dragIconSize(32) |
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{ |
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} |
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DragHelper::~DragHelper() |
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{ |
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} |
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int DragHelper::dragIconSize() const |
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{ |
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return m_dragIconSize; |
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} |
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void DragHelper::setDragIconSize(int size) |
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{ |
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if (m_dragIconSize != size) { |
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m_dragIconSize = size; |
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emit dragIconSizeChanged(); |
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} |
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} |
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bool DragHelper::isDrag(int oldX, int oldY, int newX, int newY) const |
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{ |
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return ((QPoint(oldX, oldY) - QPoint(newX, newY)).manhattanLength() >= QApplication::startDragDistance()); |
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} |
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void DragHelper::startDrag(QQuickItem *item, const QUrl &url, const QIcon &icon, |
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const QString &extraMimeType, const QString &extraMimeData) |
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{ |
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// This allows the caller to return, making sure we don't crash if |
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// the caller is destroyed mid-drag (as can happen due to a sycoca |
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// change). |
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QMetaObject::invokeMethod(this, "doDrag", Qt::QueuedConnection, |
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Q_ARG(QQuickItem*, item), Q_ARG(QUrl, url), Q_ARG(QIcon, icon), |
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Q_ARG(QString, extraMimeType), Q_ARG(QString, extraMimeData)); |
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} |
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void DragHelper::doDrag(QQuickItem *item, const QUrl &url, const QIcon &icon, |
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const QString &extraMimeType, const QString &extraMimeData) const |
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{ |
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if (item && item->window() && item->window()->mouseGrabberItem()) { |
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item->window()->mouseGrabberItem()->ungrabMouse(); |
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} |
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QDrag *drag = new QDrag(item); |
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QMimeData *mimeData = new QMimeData(); |
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if (!url.isEmpty()) { |
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mimeData->setUrls(QList<QUrl>() << url); |
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} |
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if (!extraMimeType.isEmpty() && !extraMimeData.isEmpty()) { |
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mimeData->setData(extraMimeType, extraMimeData.toLatin1()); |
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} |
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drag->setMimeData(mimeData); |
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if (!icon.isNull()) { |
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drag->setPixmap(icon.pixmap(m_dragIconSize, m_dragIconSize)); |
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} |
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drag->exec(); |
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emit dropped(); |
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} |
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