qt5/QtTransferable.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 */
 
#pragma once
 
#include <cppuhelper/compbase.hxx>
#include <com/sun/star/datatransfer/XTransferable.hpp>
 
#include <QtCore/QMimeData>
#include <QtCore/QStringList>
#include <QtGui/QClipboard>
 
class QtTransferable : public cppu::WeakImplHelper<css::datatransfer::XTransferable>
{
    QtTransferable(const QtTransferable&) = delete;
 
    const QMimeData* m_pMimeData;
    osl::Mutex m_aMutex;
    bool m_bProvideUTF16FromOtherEncoding;
    css::uno::Sequence<css::datatransfer::DataFlavor> m_aMimeTypeSeq;
 
public:
    QtTransferable(const QMimeData* pMimeData);
    const QMimeData* mimeData() const { return m_pMimeData; }
 
    css::uno::Sequence<css::datatransfer::DataFlavor> SAL_CALL getTransferDataFlavors() override;
    sal_Bool SAL_CALL isDataFlavorSupported(const css::datatransfer::DataFlavor& rFlavor) override;
    css::uno::Any SAL_CALL getTransferData(const css::datatransfer::DataFlavor& rFlavor) override;
};
 
class QtClipboardTransferable final : public QtTransferable
{
    // to detect in-flight QMimeData changes
    const QClipboard::Mode m_aMode;
 
    bool hasInFlightChanged() const;
 
public:
    explicit QtClipboardTransferable(const QClipboard::Mode aMode, const QMimeData* pMimeData);
 
    // these are the same then QtTransferable, except they go through RunInMainThread
    css::uno::Sequence<css::datatransfer::DataFlavor> SAL_CALL getTransferDataFlavors() override;
    sal_Bool SAL_CALL isDataFlavorSupported(const css::datatransfer::DataFlavor& rFlavor) override;
    css::uno::Any SAL_CALL getTransferData(const css::datatransfer::DataFlavor& rFlavor) override;
};
 
typedef QtTransferable QtDnDTransferable;
 
class QtMimeData final : public QMimeData
{
    friend class QtClipboardTransferable;
 
    const css::uno::Reference<css::datatransfer::XTransferable> m_aContents;
    mutable bool m_bHaveNoCharset; // = uses the locale charset
    mutable bool m_bHaveUTF8;
    mutable QStringList m_aMimeTypeList;
 
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
    QVariant retrieveData(const QString& mimeType, QVariant::Type type) const override;
#else
    QVariant retrieveData(const QString& mimeType, QMetaType type) const override;
#endif
 
public:
    explicit QtMimeData(const css::uno::Reference<css::datatransfer::XTransferable>& aContents);
 
    bool hasFormat(const QString& mimeType) const override;
    QStringList formats() const override;
 
    bool deepCopy(QMimeData** const) const;
 
    css::datatransfer::XTransferable* xTransferable() const { return m_aContents.get(); }
};
 
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