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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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_TRANSFER_HXX
#define INCLUDED_VCL_TRANSFER_HXX
#include <vcl/dllapi.h>
#include <tools/globname.hxx>
#include <tools/gen.hxx>
#include <tools/solar.h>
#include <sot/formats.hxx>
#include <sot/exchange.hxx>
#include <cppuhelper/implbase.hxx>
#include <com/sun/star/frame/XTerminateListener.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/datatransfer/XTransferable2.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboard.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
#include <com/sun/star/datatransfer/dnd/XDragGestureListener.hpp>
#include <com/sun/star/datatransfer/dnd/DropTargetDragEvent.hpp>
#include <com/sun/star/datatransfer/dnd/DropTargetDropEvent.hpp>
#include <com/sun/star/datatransfer/dnd/XDragSourceListener.hpp>
#include <com/sun/star/datatransfer/dnd/XDropTargetListener.hpp>
#include <com/sun/star/embed/Aspects.hpp>
#include <memory>
#include <mutex>
#include <utility>
namespace com::sun::star::datatransfer::dnd { class XDragGestureRecognizer; }
namespace com::sun::star::io { class XInputStream; }
namespace com::sun::star::datatransfer::dnd { class XDropTarget; }
namespace tools { template <typename T> class SvRef; }
template <typename Arg, typename Ret> class Link;
class BitmapEx;
class GDIMetaFile;
class Graphic;
class ImageMap;
class INetBookmark;
class INetImage;
class FileList;
class SotStorageStream;
namespace vcl { class Window; }
// Drag&Drop defines
#define DND_ACTION_NONE css::datatransfer::dnd::DNDConstants::ACTION_NONE
#define DND_ACTION_COPY css::datatransfer::dnd::DNDConstants::ACTION_COPY
#define DND_ACTION_MOVE css::datatransfer::dnd::DNDConstants::ACTION_MOVE
#define DND_ACTION_COPYMOVE css::datatransfer::dnd::DNDConstants::ACTION_COPY_OR_MOVE
#define DND_ACTION_LINK css::datatransfer::dnd::DNDConstants::ACTION_LINK
#define DND_POINTER_NONE 0
#define DND_IMAGE_NONE 0
struct TransferableObjectDescriptor
{
SvGlobalName maClassName;
sal_uInt16 mnViewAspect;
Point maDragStartPos;
Size maSize;
OUString maTypeName;
OUString maDisplayName;
TransferableObjectDescriptor()
: mnViewAspect(css::embed::Aspects::MSOLE_CONTENT)
{}
VCL_DLLPUBLIC friend SvStream& WriteTransferableObjectDescriptor( SvStream& rOStm, const TransferableObjectDescriptor& rObjDesc );
};
struct AcceptDropEvent
{
Point maPosPixel;
const css::datatransfer::dnd::DropTargetDragEvent maDragEvent;
sal_Int8 mnAction;
bool mbLeaving;
bool mbDefault;
AcceptDropEvent() :
mnAction( DND_ACTION_NONE ),
mbLeaving( false ),
mbDefault( false ) {}
AcceptDropEvent( sal_Int8 nAction,
const Point& rPosPixel,
css::datatransfer::dnd::DropTargetDragEvent aDragEvent ) :
maPosPixel( rPosPixel ),
maDragEvent(std::move( aDragEvent )),
mnAction( nAction ),
mbLeaving( false ),
mbDefault( false ) {}
};
struct ExecuteDropEvent
{
Point maPosPixel;
const css::datatransfer::dnd::DropTargetDropEvent maDropEvent;
sal_Int8 mnAction;
bool mbDefault;
ExecuteDropEvent( sal_Int8 nAction,
const Point& rPosPixel,
css::datatransfer::dnd::DropTargetDropEvent aDropEvent ) :
maPosPixel( rPosPixel ),
maDropEvent(std::move( aDropEvent )),
mnAction( nAction ),
mbDefault( false ) {}
};
class VCL_DLLPUBLIC TransferableHelper : public cppu::WeakImplHelper< css::datatransfer::XTransferable2,
css::datatransfer::clipboard::XClipboardOwner,
css::datatransfer::dnd::XDragSourceListener>
{
private:
// nested class to implement the XTerminateListener interface
class SAL_DLLPRIVATE TerminateListener final : public cppu::WeakImplHelper< css::frame::XTerminateListener, css::lang::XServiceInfo >
{
private:
TransferableHelper& mrParent;
private:
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
// XTerminateListener
virtual void SAL_CALL queryTermination( const css::lang::EventObject& aEvent ) override;
virtual void SAL_CALL notifyTermination( const css::lang::EventObject& aEvent ) override;
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
virtual sal_Bool SAL_CALL supportsService( const OUString& sServiceName ) override;
virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
public:
TerminateListener( TransferableHelper& rDropTargetHelper );
virtual ~TerminateListener() override;
};
friend class TransferableHelper::TerminateListener;
private:
css::uno::Any maAny;
OUString maLastFormat;
mutable css::uno::Reference< css::datatransfer::clipboard::XClipboard > mxClipboard;
css::uno::Reference< css::frame::XTerminateListener > mxTerminateListener;
DataFlavorExVector maFormats;
std::unique_ptr<TransferableObjectDescriptor> mxObjDesc;
protected:
~TransferableHelper();
const css::uno::Reference< css::datatransfer::clipboard::XClipboard >&
getOwnClipboard() const { return mxClipboard; }
public:
// XTransferable
virtual css::uno::Any SAL_CALL getTransferData( const css::datatransfer::DataFlavor& rFlavor ) override;
virtual css::uno::Sequence< css::datatransfer::DataFlavor > SAL_CALL getTransferDataFlavors() override;
virtual sal_Bool SAL_CALL isDataFlavorSupported( const css::datatransfer::DataFlavor& rFlavor ) override;
// Transferable2
virtual css::uno::Any SAL_CALL getTransferData2(
const css::datatransfer::DataFlavor& rFlavor, const OUString& rDestDoc ) override;
virtual sal_Bool SAL_CALL isComplex() override;
private:
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
// XDragSourceListener
virtual void SAL_CALL dragDropEnd( const css::datatransfer::dnd::DragSourceDropEvent& dsde ) override;
virtual void SAL_CALL dragEnter( const css::datatransfer::dnd::DragSourceDragEvent& dsde ) override;
virtual void SAL_CALL dragExit( const css::datatransfer::dnd::DragSourceEvent& dse ) override;
virtual void SAL_CALL dragOver( const css::datatransfer::dnd::DragSourceDragEvent& dsde ) override;
virtual void SAL_CALL dropActionChanged( const css::datatransfer::dnd::DragSourceDragEvent& dsde ) override;
// XClipboardOwner
virtual void SAL_CALL lostOwnership( const css::uno::Reference< css::datatransfer::clipboard::XClipboard >& xClipboard, const css::uno::Reference< css::datatransfer::XTransferable >& xTrans ) override;
protected:
// derivees need to access lostOwnership in case hey override it
// on windows, changing the access rights to a method gives unresolved externals, so we introduce
// this impl-method here 'til the next incompatible update
void implCallOwnLostOwnership(
const css::uno::Reference< css::datatransfer::clipboard::XClipboard >& _rxClipboard,
const css::uno::Reference< css::datatransfer::XTransferable >& _rxTrans
)
{
TransferableHelper::lostOwnership( _rxClipboard, _rxTrans );
}
private:
SAL_DLLPRIVATE void ImplFlush();
protected:
void AddFormat( SotClipboardFormatId nFormat );
void AddFormat( const css::datatransfer::DataFlavor& rFlavor );
void RemoveFormat( SotClipboardFormatId nFormat );
void RemoveFormat( const css::datatransfer::DataFlavor& rFlavor );
bool HasFormat( SotClipboardFormatId nFormat );
void ClearFormats();
bool SetAny( const css::uno::Any& rAny );
bool SetString( const OUString& rString );
bool SetBitmapEx( const BitmapEx& rBitmap, const css::datatransfer::DataFlavor& rFlavor );
bool SetGDIMetaFile( const GDIMetaFile& rMtf );
bool SetGraphic( const Graphic& rGraphic );
bool SetImageMap( const ImageMap& rIMap );
bool SetTransferableObjectDescriptor( const TransferableObjectDescriptor& rDesc );
bool SetINetBookmark( const INetBookmark& rBmk, const css::datatransfer::DataFlavor& rFlavor );
bool SetINetImage( const INetImage& rINtImg, const css::datatransfer::DataFlavor& rFlavor );
bool SetObject( void* pUserObject, sal_uInt32 nUserObjectId, const css::datatransfer::DataFlavor& rFlavor );
protected:
virtual void AddSupportedFormats() = 0;
virtual bool GetData( const css::datatransfer::DataFlavor& rFlavor, const OUString& rDestDoc ) = 0;
virtual bool WriteObject( SvStream& rOStm, void* pUserObject, sal_uInt32 nUserObjectId, const css::datatransfer::DataFlavor& rFlavor );
virtual void DragFinished( sal_Int8 nDropAction );
virtual void ObjectReleased();
void CopyToSelection(const css::uno::Reference<css::datatransfer::clipboard::XClipboard> &rClipboard) const;
public:
void PrepareOLE( const TransferableObjectDescriptor& rObjDesc );
void CopyToClipboard(const css::uno::Reference<css::datatransfer::clipboard::XClipboard> &rClipboard) const;
// convenience versions of the above which extract the XClipboard from the pWindow
void CopyToClipboard( vcl::Window *pWindow ) const;
void CopyToPrimarySelection() const;
void StartDrag( vcl::Window* pWindow, sal_Int8 nDragSourceActions );
static void ClearPrimarySelection();
};
struct TransferableDataHelper_Impl;
class VCL_DLLPUBLIC TransferableDataHelper final
{
friend class DropTargetHelper;
css::uno::Reference< css::datatransfer::XTransferable > mxTransfer;
css::uno::Reference< css::datatransfer::clipboard::XClipboard > mxClipboard;
DataFlavorExVector maFormats;
std::unique_ptr<TransferableObjectDescriptor> mxObjDesc;
std::unique_ptr<TransferableDataHelper_Impl> mxImpl;
void InitFormats();
public:
static void FillDataFlavorExVector( const css::uno::Sequence< css::datatransfer::DataFlavor >& rDataFlavorSeq,
DataFlavorExVector& rDataFlavorExVector );
TransferableDataHelper();
TransferableDataHelper( const TransferableDataHelper& rDataHelper );
TransferableDataHelper( TransferableDataHelper&& rDataHelper ) noexcept;
TransferableDataHelper( const css::uno::Reference< css::datatransfer::XTransferable >& rxTransferable );
~TransferableDataHelper();
TransferableDataHelper& operator=( const TransferableDataHelper& rDataHelper );
TransferableDataHelper& operator=( TransferableDataHelper&& rDataHelper );
const css::uno::Reference< css::datatransfer::XTransferable >& GetTransferable() const { return mxTransfer; }
css::uno::Reference< css::datatransfer::XTransferable > GetXTransferable() const;
bool HasFormat( SotClipboardFormatId nFormat ) const;
bool HasFormat( const css::datatransfer::DataFlavor& rFlavor ) const;
sal_uInt32 GetFormatCount() const;
SotClipboardFormatId GetFormat( sal_uInt32 nFormat ) const;
css::datatransfer::DataFlavor GetFormatDataFlavor( sal_uInt32 nFormat ) const;
const DataFlavorExVector& GetDataFlavorExVector() const {return maFormats; }
bool StartClipboardListening( );
void StopClipboardListening( );
void Rebind( const css::uno::Reference< css::datatransfer::XTransferable >& _rxNewData );
css::uno::Any GetAny( SotClipboardFormatId nFormat, const OUString& rDestDoc ) const;
css::uno::Any GetAny( const css::datatransfer::DataFlavor& rFlavor, const OUString& rDestDoc ) const;
bool GetString( SotClipboardFormatId nFormat, OUString& rStr ) const;
bool GetString( const css::datatransfer::DataFlavor& rFlavor, OUString& rStr ) const;
bool GetBitmapEx( SotClipboardFormatId nFormat, BitmapEx& rBmp ) const;
bool GetBitmapEx( const css::datatransfer::DataFlavor& rFlavor, BitmapEx& rBmp ) const;
/** Return as GDI metafile.
@param nMaxAction Allows you to limit the amount of actions; defaults to 0 which means no limit.
When you eg. Ctrl+a in Excel, you can get the entire sheet as
metafile, with over 3 million (!) actions; which is just too large for
any reasonable handling - and you need to set a limit.
*/
bool GetGDIMetaFile( SotClipboardFormatId nFormat, GDIMetaFile& rMtf, size_t nMaxActions = 0 ) const;
bool GetGDIMetaFile( const css::datatransfer::DataFlavor& rFlavor, GDIMetaFile& rMtf ) const;
bool GetGraphic( SotClipboardFormatId nFormat, Graphic& rGraphic ) const;
bool GetGraphic( const css::datatransfer::DataFlavor& rFlavor, Graphic& rGraphic ) const;
bool GetImageMap( SotClipboardFormatId nFormat, ImageMap& rIMap ) const;
bool GetImageMap( const css::datatransfer::DataFlavor& rFlavor, ImageMap& rImap ) const;
bool GetTransferableObjectDescriptor( SotClipboardFormatId nFormat, TransferableObjectDescriptor& rDesc ) const;
bool GetTransferableObjectDescriptor( TransferableObjectDescriptor& rDesc ) const;
bool GetINetBookmark( SotClipboardFormatId nFormat, INetBookmark& rBmk ) const;
bool GetINetBookmark( const css::datatransfer::DataFlavor& rFlavor, INetBookmark& rBmk ) const;
bool GetINetImage( SotClipboardFormatId nFormat, INetImage& rINtImg ) const;
bool GetINetImage( const css::datatransfer::DataFlavor& rFlavor, INetImage& rINtImg ) const;
bool GetFileList( SotClipboardFormatId nFormat, FileList& rFileList ) const;
bool GetFileList( FileList& rFileList ) const;
css::uno::Sequence<sal_Int8> GetSequence( SotClipboardFormatId nFormat, const OUString& rDestDoc ) const;
css::uno::Sequence<sal_Int8> GetSequence( const css::datatransfer::DataFlavor& rFlavor, const OUString& rDestDoc ) const;
std::unique_ptr<SvStream> GetSotStorageStream( SotClipboardFormatId nFormat ) const;
std::unique_ptr<SvStream> GetSotStorageStream( const css::datatransfer::DataFlavor& rFlavor ) const;
css::uno::Reference<css::io::XInputStream> GetInputStream( SotClipboardFormatId nFormat, const OUString& rDestDoc ) const;
css::uno::Reference<css::io::XInputStream> GetInputStream( const css::datatransfer::DataFlavor& rFlavor, const OUString& rDestDoc ) const;
static TransferableDataHelper CreateFromClipboard(const css::uno::Reference<css::datatransfer::clipboard::XClipboard>& rClipboard);
static TransferableDataHelper CreateFromSystemClipboard( vcl::Window * pWindow );
static TransferableDataHelper CreateFromPrimarySelection();
static bool IsEqual( const css::datatransfer::DataFlavor& rInternalFlavor,
const css::datatransfer::DataFlavor& rRequestFlavor );
static bool WriteDDELink(SvStream& stream, std::u16string_view application,
std::u16string_view topic, std::u16string_view item,
std::u16string_view extra = {});
bool ReadDDELink(OUString& application, OUString& topic, OUString& item, OUString& rest) const;
};
class VCL_DLLPUBLIC SAL_LOPLUGIN_ANNOTATE("crosscast") DragSourceHelper
{
private:
// nested class to implement the XDragGestureListener interface
class SAL_DLLPRIVATE DragGestureListener final : public cppu::WeakImplHelper< css::datatransfer::dnd::XDragGestureListener >
{
private:
DragSourceHelper& mrParent;
private:
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
// XDragGestureListener
virtual void SAL_CALL dragGestureRecognized( const css::datatransfer::dnd::DragGestureEvent& rDGE ) override;
public:
DragGestureListener( DragSourceHelper& rDragSourceHelper );
virtual ~DragGestureListener() override;
};
friend class DragSourceHelper::DragGestureListener;
private:
std::mutex maMutex;
css::uno::Reference< css::datatransfer::dnd::XDragGestureRecognizer > mxDragGestureRecognizer;
css::uno::Reference< css::datatransfer::dnd::XDragGestureListener > mxDragGestureListener;
DragSourceHelper& operator=( const DragSourceHelper& rDragSourceHelper ) = delete;
bool operator==( const DragSourceHelper& rDragSourceHelper ) const = delete;
public:
// to be overridden by the application
virtual void StartDrag( sal_Int8 nAction, const Point& rPosPixel );
DragSourceHelper( vcl::Window* pWindow );
void dispose();
virtual ~DragSourceHelper();
};
class VCL_DLLPUBLIC SAL_LOPLUGIN_ANNOTATE("crosscast") DropTargetHelper
{
private:
// nested class to implement the XDropTargetListener interface
class SAL_DLLPRIVATE DropTargetListener final : public cppu::WeakImplHelper< css::datatransfer::dnd::XDropTargetListener >
{
private:
DropTargetHelper& mrParent;
std::unique_ptr<AcceptDropEvent> mpLastDragOverEvent;
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
// XDropTargetListener
virtual void SAL_CALL drop( const css::datatransfer::dnd::DropTargetDropEvent& dtde ) override;
virtual void SAL_CALL dragEnter( const css::datatransfer::dnd::DropTargetDragEnterEvent& dtdee ) override;
virtual void SAL_CALL dragExit( const css::datatransfer::dnd::DropTargetEvent& dte ) override;
virtual void SAL_CALL dragOver( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) override;
virtual void SAL_CALL dropActionChanged( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) override;
public:
DropTargetListener( DropTargetHelper& rDropTargetHelper );
virtual ~DropTargetListener() override;
};
friend class DropTargetHelper::DropTargetListener;
private:
std::mutex maMutex;
css::uno::Reference< css::datatransfer::dnd::XDropTarget > mxDropTarget;
css::uno::Reference< css::datatransfer::dnd::XDropTargetListener > mxDropTargetListener;
DataFlavorExVector maFormats;
DropTargetHelper() = delete;
DropTargetHelper& operator=( const DropTargetHelper& rDropTargetHelper ) = delete;
bool operator==( const DropTargetHelper& rDropTargetHelper ) const = delete;
void ImplConstruct();
// called by our own implementation of XDropTargetListener (DropTargetListener instance)
SAL_DLLPRIVATE void ImplBeginDrag( const css::uno::Sequence< css::datatransfer::DataFlavor >& rSupportedDataFlavors );
SAL_DLLPRIVATE void ImplEndDrag();
public:
// to be overridden by the application
SAL_DLLPRIVATE virtual sal_Int8 AcceptDrop( const AcceptDropEvent& rEvt );
SAL_DLLPRIVATE virtual sal_Int8 ExecuteDrop( const ExecuteDropEvent& rEvt );
DropTargetHelper( vcl::Window* pWindow );
DropTargetHelper( const css::uno::Reference< css::datatransfer::dnd::XDropTarget >& rxDropTarget );
void dispose();
virtual ~DropTargetHelper();
// typically called by the application in ::AcceptDrop and ::ExecuteDrop and (see above)
bool IsDropFormatSupported(SotClipboardFormatId nFormat) const;
const DataFlavorExVector& GetDataFlavorExVector() const {return maFormats; }
};
struct TransferDataContainer_Impl;
class VCL_DLLPUBLIC TransferDataContainer : public TransferableHelper
{
std::unique_ptr<TransferDataContainer_Impl> pImpl;
virtual void AddSupportedFormats() override;
virtual bool GetData( const css::datatransfer::DataFlavor& rFlavor, const OUString& rDestDoc ) override;
public:
TransferDataContainer();
virtual ~TransferDataContainer() override;
void CopyINetBookmark( const INetBookmark& rBkmk );
void CopyString( const OUString& rStr );
void CopyString( SotClipboardFormatId nFmt, const OUString& rStr );
void CopyByteString( SotClipboardFormatId nFormatId, const OString& rStr );
void CopyAnyData( SotClipboardFormatId nFormatId, const char* pData, sal_uLong nLen );
bool HasAnyData() const;
using TransferableHelper::StartDrag;
void StartDrag( vcl::Window* pWindow, sal_Int8 nDragSourceActions,
const Link<sal_Int8,void>& rCallback );
virtual void DragFinished( sal_Int8 nDropAction ) override;
};
css::uno::Reference<css::datatransfer::clipboard::XClipboard> VCL_DLLPUBLIC GetSystemClipboard();
css::uno::Reference<css::datatransfer::clipboard::XClipboard> VCL_DLLPUBLIC GetSystemPrimarySelection();
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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