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Diffstat (limited to 'src/quick/items/qquickdrag_p.h')
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1 files changed, 206 insertions, 0 deletions
diff --git a/src/quick/items/qquickdrag_p.h b/src/quick/items/qquickdrag_p.h new file mode 100644 index 0000000000..830c665899 --- /dev/null +++ b/src/quick/items/qquickdrag_p.h @@ -0,0 +1,206 @@ +// Commit: c6e6a35aeb8794d68a3ca0c4e27a3a1181c066b5 +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQUICKDRAG_P_H +#define QQUICKDRAG_P_H + +#include <QtQuick/qquickitem.h> + +#include <private/qv8engine_p.h> + +#include <QtCore/qmimedata.h> +#include <QtCore/qstringlist.h> + + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QQuickItem; +class QQuickDrag; +class QQuickDragPrivate; + +class QQuickDragGrabber +{ + class Item : public QDeclarativeGuard<QQuickItem> + { + public: + Item(QQuickItem *item) : QDeclarativeGuard<QQuickItem>(item) {} + + QIntrusiveListNode node; + protected: + void objectDestroyed(QQuickItem *) { delete this; } + }; + + typedef QIntrusiveList<Item, &Item::node> ItemList; + +public: + QQuickDragGrabber() : m_target(0) {} + ~QQuickDragGrabber() { while (!m_items.isEmpty()) delete m_items.first(); } + + + QObject *target() const + { + if (m_target) + return m_target; + else if (!m_items.isEmpty()) + return *m_items.first(); + else + return 0; + } + void setTarget(QObject *target) { m_target = target; } + void resetTarget() { m_target = 0; } + + typedef ItemList::iterator iterator; + iterator begin() { return m_items.begin(); } + iterator end() { return m_items.end(); } + + void grab(QQuickItem *item) { m_items.insert(new Item(item)); } + iterator release(iterator at) { Item *item = *at; at = at.erase(); delete item; return at; } + +private: + + ItemList m_items; + QObject *m_target; +}; + +class QQuickDropEventEx : public QDropEvent +{ +public: + void setProposedAction(Qt::DropAction action) { default_action = action; drop_action = action; } + + static void setProposedAction(QDropEvent *event, Qt::DropAction action) { + static_cast<QQuickDropEventEx *>(event)->setProposedAction(action); + } + + void copyActions(const QDropEvent &from) { + default_action = from.proposedAction(); drop_action = from.dropAction(); } + + static void copyActions(QDropEvent *to, const QDropEvent &from) { + static_cast<QQuickDropEventEx *>(to)->copyActions(from); + } +}; + +class QQuickDragMimeData : public QMimeData +{ + Q_OBJECT +public: + QQuickDragMimeData() + : m_source(0) + { + } + + QStringList keys() const { return m_keys; } + QObject *source() const { return m_source; } + +private: + QObject *m_source; + Qt::DropActions m_supportedActions; + QStringList m_keys; + + friend class QQuickDragAttached; + friend class QQuickDragAttachedPrivate; +}; + +class QDeclarativeV8Function; + +class QQuickDragAttachedPrivate; +class QQuickDragAttached : public QObject +{ + Q_OBJECT + Q_PROPERTY(bool active READ isActive WRITE setActive NOTIFY activeChanged) + Q_PROPERTY(QObject *source READ source WRITE setSource NOTIFY sourceChanged RESET resetSource) + Q_PROPERTY(QObject *target READ target NOTIFY targetChanged) + Q_PROPERTY(QPointF hotSpot READ hotSpot WRITE setHotSpot NOTIFY hotSpotChanged) + Q_PROPERTY(QStringList keys READ keys WRITE setKeys NOTIFY keysChanged) + Q_PROPERTY(Qt::DropActions supportedActions READ supportedActions WRITE setSupportedActions NOTIFY supportedActionsChanged) + Q_PROPERTY(Qt::DropAction proposedAction READ proposedAction WRITE setProposedAction NOTIFY proposedActionChanged) +public: + QQuickDragAttached(QObject *parent); + ~QQuickDragAttached(); + + bool isActive() const; + void setActive(bool active); + + QObject *source() const; + void setSource(QObject *item); + void resetSource(); + + QObject *target() const; + + QPointF hotSpot() const; + void setHotSpot(const QPointF &hotSpot); + + QStringList keys() const; + void setKeys(const QStringList &keys); + + Qt::DropActions supportedActions() const; + void setSupportedActions(Qt::DropActions actions); + + Qt::DropAction proposedAction() const; + void setProposedAction(Qt::DropAction action); + + Q_INVOKABLE int drop(); + +public Q_SLOTS: + void start(QDeclarativeV8Function *); + void cancel(); + +Q_SIGNALS: + void activeChanged(); + void sourceChanged(); + void targetChanged(); + void hotSpotChanged(); + void keysChanged(); + void supportedActionsChanged(); + void proposedActionChanged(); + +private: + Q_DECLARE_PRIVATE(QQuickDragAttached) +}; + + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |