Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 496 insertions, 0 deletions

diff --git a/vcl/unx/generic/dtrans/X11_selection.hxx b/vcl/unx/generic/dtrans/X11_selection.hxx
new file mode 100644
index 000000000..c0ae171c6
--- /dev/null
+++ b/vcl/unx/generic/dtrans/X11_selection.hxx
@@ -0,0 +1,496 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <cppuhelper/compbase.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
+#include <com/sun/star/datatransfer/dnd/XDragSource.hpp>
+#include <com/sun/star/awt/XDisplayConnection.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/frame/XDesktop2.hpp>
+#include <osl/thread.h>
+#include <osl/conditn.hxx>
+#include <rtl/ref.hxx>
+
+#include <list>
+#include <unordered_map>
+#include <vector>
+
+#include <X11/Xlib.h>
+
+
+namespace x11 {
+
+    class PixmapHolder; // in bmp.hxx
+    class SelectionManager;
+
+    rtl_TextEncoding getTextPlainEncoding( const OUString& rMimeType );
+
+    class SelectionAdaptor
+    {
+    public:
+        virtual css::uno::Reference< css::datatransfer::XTransferable > getTransferable() = 0;
+        virtual void clearTransferable() = 0;
+        virtual void fireContentsChanged() = 0;
+        virtual css::uno::Reference< css::uno::XInterface > getReference() = 0;
+        // returns a reference that will keep the SelectionAdaptor alive until the
+        // reference is released
+
+    protected:
+        ~SelectionAdaptor() {}
+    };
+
+    class DropTarget :
+        public ::cppu::WeakComponentImplHelper<
+            css::datatransfer::dnd::XDropTarget,
+            css::lang::XInitialization,
+            css::lang::XServiceInfo
+        >
+    {
+    public:
+        ::osl::Mutex                m_aMutex;
+        bool                        m_bActive;
+        sal_Int8                    m_nDefaultActions;
+        ::Window                    m_aTargetWindow;
+        rtl::Reference<SelectionManager>
+                                    m_xSelectionManager;
+        ::std::vector< css::uno::Reference< css::datatransfer::dnd::XDropTargetListener > >
+                                    m_aListeners;
+
+        DropTarget();
+        virtual ~DropTarget() override;
+
+        // convenience functions that loop over listeners
+        void dragEnter( const css::datatransfer::dnd::DropTargetDragEnterEvent& dtde ) noexcept;
+        void dragExit( const css::datatransfer::dnd::DropTargetEvent& dte ) noexcept;
+        void dragOver( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) noexcept;
+        void drop( const css::datatransfer::dnd::DropTargetDropEvent& dtde ) noexcept;
+
+        // XInitialization
+        virtual void        SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& args ) override;
+
+        // XDropTarget
+        virtual void        SAL_CALL addDropTargetListener( const css::uno::Reference< css::datatransfer::dnd::XDropTargetListener >& ) override;
+        virtual void        SAL_CALL removeDropTargetListener( const css::uno::Reference< css::datatransfer::dnd::XDropTargetListener >& ) override;
+        virtual sal_Bool    SAL_CALL isActive() override;
+        virtual void        SAL_CALL setActive( sal_Bool active ) override;
+        virtual sal_Int8    SAL_CALL getDefaultActions() override;
+        virtual void        SAL_CALL setDefaultActions( sal_Int8 actions ) override;
+
+        // XServiceInfo
+        virtual OUString SAL_CALL getImplementationName() override;
+        virtual sal_Bool    SAL_CALL supportsService( const OUString& ServiceName ) override;
+        virtual css::uno::Sequence< OUString >
+                            SAL_CALL getSupportedServiceNames() override;
+    };
+
+    class SelectionManagerHolder :
+        public ::cppu::WeakComponentImplHelper<
+            css::datatransfer::dnd::XDragSource,
+            css::lang::XInitialization,
+            css::lang::XServiceInfo
+        >
+    {
+        ::osl::Mutex m_aMutex;
+        css::uno::Reference< css::datatransfer::dnd::XDragSource >
+            m_xRealDragSource;
+    public:
+        SelectionManagerHolder();
+        virtual ~SelectionManagerHolder() override;
+
+        // XServiceInfo
+        virtual OUString SAL_CALL getImplementationName() override;
+        virtual sal_Bool    SAL_CALL supportsService( const OUString& ServiceName ) override;
+        virtual css::uno::Sequence< OUString >
+                            SAL_CALL getSupportedServiceNames() override;
+
+        // XInitialization
+        virtual void        SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& arguments ) override;
+
+        // XDragSource
+        virtual sal_Bool    SAL_CALL isDragImageSupported() override;
+        virtual sal_Int32   SAL_CALL getDefaultCursor( sal_Int8 dragAction ) override;
+        virtual void        SAL_CALL startDrag(
+            const css::datatransfer::dnd::DragGestureEvent& trigger,
+            sal_Int8 sourceActions, sal_Int32 cursor, sal_Int32 image,
+            const css::uno::Reference< css::datatransfer::XTransferable >& transferable,
+            const css::uno::Reference< css::datatransfer::dnd::XDragSourceListener >& listener
+            ) override;
+
+    };
+
+    class SelectionManager :
+        public ::cppu::WeakImplHelper<
+            css::datatransfer::dnd::XDragSource,
+            css::lang::XInitialization,
+            css::awt::XEventHandler,
+            css::frame::XTerminateListener
+        >,
+        public SelectionAdaptor
+    {
+        static std::unordered_map< OUString, SelectionManager* >& getInstances();
+
+        // for INCR type selection transfer
+        // INCR protocol is used if the data cannot
+        // be transported at once but in parts
+        // IncrementalTransfer holds the bytes to be transmitted
+        // as well as the current position
+        // INCR triggers the delivery of the next part by deleting the
+        // property used to transfer the data
+        struct IncrementalTransfer
+        {
+            css::uno::Sequence< sal_Int8 >  m_aData;
+            int                             m_nBufferPos;
+            ::Window                        m_aRequestor;
+            Atom                            m_aProperty;
+            Atom                            m_aTarget;
+            int                             m_nFormat;
+            int                             m_nTransferStartTime;
+        };
+        int m_nIncrementalThreshold;
+
+        // a struct to hold the data associated with a selection
+        struct Selection
+        {
+            enum State
+            {
+                Inactive, WaitingForResponse, WaitingForData, IncrementalTransfer
+            };
+
+            State                       m_eState;
+            SelectionAdaptor*           m_pAdaptor;
+            ::osl::Condition            m_aDataArrived;
+            css::uno::Sequence< sal_Int8 > m_aData;
+            css::uno::Sequence< css::datatransfer::DataFlavor >
+                                        m_aTypes;
+            std::vector< Atom >         m_aNativeTypes;
+            // this is used for caching
+            // m_aTypes is invalid after 2 seconds
+            // m_aNativeTypes contains the corresponding original atom
+            Atom                        m_aRequestedType;
+            // m_aRequestedType is only valid while WaitingForResponse and WaitingFotData
+            int                         m_nLastTimestamp;
+            bool                        m_bHaveUTF16;
+            Atom                        m_aUTF8Type;
+            bool                        m_bHaveCompound;
+            bool                        m_bOwner;
+            ::Window                    m_aLastOwner;
+            PixmapHolder*               m_pPixmap;
+            // m_nOrigTimestamp contains the Timestamp at which the selection
+            // was acquired; needed for TimeSTAMP target
+            Time                        m_nOrigTimestamp;
+
+            Selection() : m_eState( Inactive ),
+                          m_pAdaptor( nullptr ),
+                          m_aRequestedType( None ),
+                          m_nLastTimestamp( 0 ),
+                          m_bHaveUTF16( false ),
+                          m_aUTF8Type( None ),
+                          m_bHaveCompound( false ),
+                          m_bOwner( false ),
+                          m_aLastOwner( None ),
+                          m_pPixmap( nullptr ),
+                          m_nOrigTimestamp( CurrentTime )
+                {}
+        };
+
+        // a struct to hold data associated with a XDropTarget
+        struct DropTargetEntry
+        {
+            DropTarget*     m_pTarget;
+            ::Window        m_aRootWindow;
+
+            DropTargetEntry() : m_pTarget( nullptr ), m_aRootWindow( None ) {}
+            explicit DropTargetEntry( DropTarget* pTarget ) :
+                    m_pTarget( pTarget ),
+                    m_aRootWindow( None )
+                {}
+            DropTargetEntry( const DropTargetEntry& rEntry ) :
+                    m_pTarget( rEntry.m_pTarget ),
+                    m_aRootWindow( rEntry.m_aRootWindow )
+                {}
+
+            DropTarget* operator->() const { return m_pTarget; }
+            DropTargetEntry& operator=(const DropTargetEntry& rEntry)
+                { m_pTarget = rEntry.m_pTarget; m_aRootWindow = rEntry.m_aRootWindow; return *this; }
+        };
+
+        // internal data
+        Display*                    m_pDisplay;
+        oslThread                   m_aThread;
+        int                         m_EndThreadPipe[2];
+        oslThread                   m_aDragExecuteThread;
+        ::osl::Condition            m_aDragRunning;
+        ::Window                    m_aWindow;
+        css::uno::Reference< css::frame::XDesktop2 > m_xDesktop;
+        css::uno::Reference< css::awt::XDisplayConnection >
+                                    m_xDisplayConnection;
+        sal_Int32                   m_nSelectionTimeout;
+        Time                        m_nSelectionTimestamp;
+
+        // members used for Xdnd
+
+        // drop only
+
+        // contains the XdndEnterEvent of a drop action running
+        // with one of our targets. The data.l[0] member
+        // (containing the drag source ::Window) is set
+        // to None while that is not the case
+        XClientMessageEvent         m_aDropEnterEvent;
+        // set to false on XdndEnter
+        // set to true on first XdndPosition or XdndLeave
+        bool                        m_bDropEnterSent;
+        ::Window                    m_aCurrentDropWindow;
+        // Time code of XdndDrop
+        Time                        m_nDropTime;
+        sal_Int8                    m_nLastDropAction;
+        // XTransferable for Xdnd with foreign drag source
+        css::uno::Reference< css::datatransfer::XTransferable >
+                                    m_xDropTransferable;
+        int                         m_nLastX, m_nLastY;
+        // set to true when calling drop()
+        // if another XdndEnter is received this shows that
+        // someone forgot to call dropComplete - we should reset
+        // and react to the new drop
+        bool                        m_bDropWaitingForCompletion;
+
+        // drag only
+
+        // None if no Dnd action is running with us as source
+        ::Window                    m_aDropWindow;
+        // either m_aDropWindow or its XdndProxy
+        ::Window                    m_aDropProxy;
+        ::Window                    m_aDragSourceWindow;
+        // XTransferable for Xdnd when we are drag source
+        css::uno::Reference< css::datatransfer::XTransferable >
+                                    m_xDragSourceTransferable;
+        css::uno::Reference< css::datatransfer::dnd::XDragSourceListener >
+                                    m_xDragSourceListener;
+        // root coordinates
+        int                         m_nLastDragX, m_nLastDragY;
+        css::uno::Sequence< css::datatransfer::DataFlavor >
+                                    m_aDragFlavors;
+        // the rectangle the pointer must leave until a new XdndPosition should
+        // be sent. empty unless the drop target told to fill
+        int                         m_nNoPosX, m_nNoPosY, m_nNoPosWidth, m_nNoPosHeight;
+        unsigned int                m_nDragButton;
+        sal_Int8                    m_nUserDragAction;
+        sal_Int8                    m_nTargetAcceptAction;
+        sal_Int8                    m_nSourceActions;
+        bool                        m_bLastDropAccepted;
+        bool                        m_bDropSuccess;
+        bool                        m_bDropSent;
+        time_t                      m_nDropTimeout;
+        bool                        m_bWaitingForPrimaryConversion;
+
+        // drag cursors
+        Cursor                      m_aMoveCursor;
+        Cursor                      m_aCopyCursor;
+        Cursor                      m_aLinkCursor;
+        Cursor                      m_aNoneCursor;
+        Cursor                      m_aCurrentCursor;
+
+        // drag and drop
+
+        int                         m_nCurrentProtocolVersion;
+        std::unordered_map< ::Window, DropTargetEntry >
+                                    m_aDropTargets;
+
+        // some special atoms that are needed often
+        Atom                        m_nTARGETSAtom;
+        Atom                        m_nTIMESTAMPAtom;
+        Atom                        m_nTEXTAtom;
+        Atom                        m_nINCRAtom;
+        Atom                        m_nCOMPOUNDAtom;
+        Atom                        m_nMULTIPLEAtom;
+        Atom                        m_nImageBmpAtom;
+        Atom                        m_nXdndAware;
+        Atom                        m_nXdndEnter;
+        Atom                        m_nXdndLeave;
+        Atom                        m_nXdndPosition;
+        Atom                        m_nXdndStatus;
+        Atom                        m_nXdndDrop;
+        Atom                        m_nXdndFinished;
+        Atom                        m_nXdndSelection;
+        Atom                        m_nXdndTypeList;
+        Atom                        m_nXdndProxy;
+        Atom                        m_nXdndActionCopy;
+        Atom                        m_nXdndActionMove;
+        Atom                        m_nXdndActionLink;
+        Atom                        m_nXdndActionAsk;
+
+        // caching for atoms
+        std::unordered_map< Atom, OUString >
+                                    m_aAtomToString;
+        std::unordered_map< OUString, Atom >
+                                    m_aStringToAtom;
+
+        // the registered selections
+        std::unordered_map< Atom, Selection* >
+                                    m_aSelections;
+        // IncrementalTransfers in progress
+        std::unordered_map< ::Window, std::unordered_map< Atom, IncrementalTransfer > >
+                                    m_aIncrementals;
+
+        // do not use X11 multithreading capabilities
+        // since this leads to deadlocks in different Xlib implementations
+        // (XFree as well as Xsun) use an own mutex instead
+        ::osl::Mutex                m_aMutex;
+        bool                        m_bShutDown;
+
+        SelectionManager();
+        virtual ~SelectionManager() override;
+
+        SelectionAdaptor* getAdaptor( Atom selection );
+        PixmapHolder* getPixmapHolder( Atom selection );
+
+        // handle various events
+        bool handleSelectionRequest( XSelectionRequestEvent& rRequest );
+        bool handleSendPropertyNotify( XPropertyEvent const & rNotify );
+        bool handleReceivePropertyNotify( XPropertyEvent const & rNotify );
+        bool handleSelectionNotify( XSelectionEvent const & rNotify );
+        bool handleDragEvent( XEvent const & rMessage );
+        bool handleDropEvent( XClientMessageEvent const & rMessage );
+
+        // dnd helpers
+        void sendDragStatus( Atom nDropAction );
+        void sendDropPosition( bool bForce, Time eventTime );
+        bool updateDragAction( int modifierState );
+        int getXdndVersion( ::Window aXLIB_Window, ::Window& rProxy );
+        Cursor createCursor( const unsigned char* pPointerData, const unsigned char* pMaskData, int width, int height, int hotX, int hotY );
+        // coordinates on root ::Window
+        void updateDragWindow( int nX, int nY, ::Window aRoot );
+
+        bool getPasteData( Atom selection, Atom type, css::uno::Sequence< sal_Int8 >& rData );
+        // returns true if conversion was successful
+        bool convertData( const css::uno::Reference< css::datatransfer::XTransferable >& xTransferable,
+                          Atom nType,
+                          Atom nSelection,
+                          int & rFormat,
+                          css::uno::Sequence< sal_Int8 >& rData );
+        bool sendData( SelectionAdaptor* pAdaptor, ::Window requestor, Atom target, Atom property, Atom selection );
+
+        // thread dispatch loop
+        public:
+        // public for extern "C" stub
+        static void run( void* );
+        private:
+        void dispatchEvent( int millisec );
+        // drag thread dispatch
+        public:
+        // public for extern "C" stub
+        static void runDragExecute( void* );
+        private:
+        void dragDoDispatch();
+        bool handleXEvent( XEvent& rEvent );
+
+        // compound text conversion
+        OString convertToCompound( const OUString& rText );
+        OUString convertFromCompound( const char* pText, int nLen );
+
+        sal_Int8 getUserDragAction() const;
+        sal_Int32 getSelectionTimeout();
+    public:
+        static SelectionManager& get( const OUString& rDisplayName = OUString() );
+
+        Display * getDisplay() { return m_pDisplay; };
+
+        void registerHandler( Atom selection, SelectionAdaptor& rAdaptor );
+        void deregisterHandler( Atom selection );
+        bool requestOwnership( Atom selection );
+
+        // allow for synchronization over one mutex for XClipboard
+        osl::Mutex& getMutex() { return m_aMutex; }
+
+        Atom getAtom( const OUString& rString );
+        OUString getString( Atom nAtom );
+
+        // type conversion
+        // note: convertTypeToNative does NOT clear the list, so you can append
+        // multiple types to the same list
+        void convertTypeToNative( const OUString& rType, Atom selection, int& rFormat, ::std::list< Atom >& rConversions, bool bPushFront = false );
+        OUString convertTypeFromNative( Atom nType, Atom selection, int& rFormat );
+        void getNativeTypeList( const css::uno::Sequence< css::datatransfer::DataFlavor >& rTypes, std::list< Atom >& rOutTypeList, Atom targetselection );
+
+        // methods for transferable
+        bool getPasteDataTypes( Atom selection, css::uno::Sequence< css::datatransfer::DataFlavor >& rTypes );
+        bool getPasteData( Atom selection, const OUString& rType, css::uno::Sequence< sal_Int8 >& rData );
+
+        // for XDropTarget to register/deregister itself
+        void registerDropTarget( ::Window aXLIB_Window, DropTarget* pTarget );
+        void deregisterDropTarget( ::Window aXLIB_Window );
+
+        // for XDropTarget{Drag|Drop}Context
+        void accept( sal_Int8 dragOperation, ::Window aDropXLIB_Window );
+        void reject( ::Window aDropXLIB_Window );
+        void dropComplete( bool success, ::Window aDropXLIB_Window );
+
+        // for XDragSourceContext
+        sal_Int32 getCurrentCursor() const { return m_aCurrentCursor;}
+        void setCursor( sal_Int32 cursor, ::Window aDropXLIB_Window );
+        void transferablesFlavorsChanged();
+
+        void shutdown() noexcept;
+
+        // XInitialization
+        virtual void        SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& arguments ) override;
+
+        // XEventHandler
+        virtual sal_Bool    SAL_CALL handleEvent(const css::uno::Any& event) override;
+
+        // XDragSource
+        virtual sal_Bool    SAL_CALL isDragImageSupported() override;
+        virtual sal_Int32   SAL_CALL getDefaultCursor( sal_Int8 dragAction ) override;
+        virtual void        SAL_CALL startDrag(
+            const css::datatransfer::dnd::DragGestureEvent& trigger,
+            sal_Int8 sourceActions, sal_Int32 cursor, sal_Int32 image,
+            const css::uno::Reference< css::datatransfer::XTransferable >& transferable,
+            const css::uno::Reference< css::datatransfer::dnd::XDragSourceListener >& listener
+            ) override;
+
+        // SelectionAdaptor for XdndSelection Drag (we are drag source)
+        virtual css::uno::Reference< css::datatransfer::XTransferable > getTransferable() noexcept override;
+        virtual void clearTransferable() noexcept override;
+        virtual void fireContentsChanged() noexcept override;
+        virtual css::uno::Reference< css::uno::XInterface > getReference() noexcept override;
+
+        // 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;
+    };
+
+    css::uno::Sequence< OUString > Xdnd_getSupportedServiceNames();
+    css::uno::Reference< css::uno::XInterface > SAL_CALL Xdnd_createInstance(
+        const css::uno::Reference< css::lang::XMultiServiceFactory > & xMultiServiceFactory);
+
+    css::uno::Sequence< OUString > Xdnd_dropTarget_getSupportedServiceNames();
+    css::uno::Reference< css::uno::XInterface > SAL_CALL Xdnd_dropTarget_createInstance(
+        const css::uno::Reference< css::lang::XMultiServiceFactory > & xMultiServiceFactory);
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */