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| -rw-r--r-- | sw/inc/accmap.hxx | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/sw/inc/accmap.hxx b/sw/inc/accmap.hxx new file mode 100644 index 000000000..29e5fbfd3 --- /dev/null +++ b/sw/inc/accmap.hxx @@ -0,0 +1,313 @@ +/* -*- 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_SW_INC_ACCMAP_HXX +#define INCLUDED_SW_INC_ACCMAP_HXX + +#include <cppuhelper/weakref.hxx> +#include <rtl/ref.hxx> +#include <osl/mutex.hxx> +#include <svx/IAccessibleViewForwarder.hxx> +#include <svx/IAccessibleParent.hxx> + +#include <svx/AccessibleControlShape.hxx> +#include <o3tl/typed_flags_set.hxx> + +#include <vector> +#include <memory> +#include <o3tl/sorted_vector.hxx> + +class SwAccessibleParagraph; +class SwViewShell; +class SwFrame; +class SwTextFrame; +class SwPageFrame; +class SwAccessibleContext; +class SwAccessibleContextMap_Impl; +class SwAccessibleEventList_Impl; +class SwAccessibleEventMap_Impl; +class SdrObject; +namespace accessibility { class AccessibleShape; } +class SwAccessibleShapeMap_Impl; +struct SwAccessibleEvent_Impl; +class SwAccessibleSelectedParas_Impl; +class SwRect; +class MapMode; +class SwAccPreviewData; +class SwFEShell; +class Fraction; +struct PreviewPage; +namespace vcl { class Window; } +namespace com::sun::star::accessibility { class XAccessible; } + +// The shape list is filled if an accessible shape is destroyed. It +// simply keeps a reference to the accessible shape's XShape. These +// references are destroyed within the EndAction when firing events. +// There are two reason for this. First of all, a new accessible shape +// for the XShape might be created soon. It's then cheaper if the XShape +// still exists. The other reason are situations where an accessible shape +// is destroyed within an SwFrameFormat::Modify. In this case, destroying +// the XShape at the same time (indirectly by destroying the accessible +// shape) leads to an assert, because a client of the Modify is destroyed +// within a Modify call. +using SwShapeList_Impl = std::vector<css::uno::Reference<css::drawing::XShape>>; + +enum class AccessibleStates +{ + NONE = 0x0000, + // real states for events + EDITABLE = 0x0001, + OPAQUE = 0x0002, + // pseudo states for events + TEXT_ATTRIBUTE_CHANGED = 0x0200, + TEXT_SELECTION_CHANGED = 0x0100, + CARET = 0x0080, + RELATION_FROM = 0x0040, + RELATION_TO = 0x0020, +}; +namespace o3tl +{ + template<> struct typed_flags<AccessibleStates> : is_typed_flags<AccessibleStates, 0x3e3> {}; +} + +class SwAccessibleMap final : public ::accessibility::IAccessibleViewForwarder, + public ::accessibility::IAccessibleParent + , public std::enable_shared_from_this<SwAccessibleMap> +{ + mutable ::osl::Mutex maMutex; + ::osl::Mutex maEventMutex; + std::unique_ptr<SwAccessibleContextMap_Impl> mpFrameMap; + std::unique_ptr<SwAccessibleShapeMap_Impl> mpShapeMap; + SwShapeList_Impl mvShapes; + std::unique_ptr<SwAccessibleEventList_Impl> mpEvents; + std::unique_ptr<SwAccessibleEventMap_Impl> mpEventMap; + // #i27301 data structure to keep information about + // accessible paragraph, which have a selection. + std::unique_ptr<SwAccessibleSelectedParas_Impl> mpSelectedParas; + SwViewShell *mpVSh; + /// for page preview: store preview data, VisArea, and mapping of + /// preview-to-display coordinates + std::unique_ptr<SwAccPreviewData> mpPreview; + + css::uno::WeakReference < css::accessibility::XAccessible > mxCursorContext; + + bool mbShapeSelected; + + void FireEvent( const SwAccessibleEvent_Impl& rEvent ); + + void AppendEvent( const SwAccessibleEvent_Impl& rEvent ); + + void InvalidateCursorPosition( const css::uno::Reference<css::accessibility::XAccessible>& rAcc ); + void DoInvalidateShapeSelection(bool bInvalidateFocusMode = false); + + void InvalidateShapeSelection(); + + //mpSelectedFrameMap contains the old selected objects. + std::unique_ptr<SwAccessibleContextMap_Impl> mpSeletedFrameMap; + + OUString maDocName; + + //InvalidateShapeInParaSelection() method is responsible for the updating the selected states of the objects. + void InvalidateShapeInParaSelection(); + + void InvalidateRelationSet_( const SwFrame* pFrame, bool bFrom ); + + css::uno::Reference<css::accessibility::XAccessible> + GetDocumentView_( bool bPagePreview ); + + /** method to build up a new data structure of the accessible paragraphs, + which have a selection + + Important note: method has to used inside a mutual exclusive section + */ + std::unique_ptr<SwAccessibleSelectedParas_Impl> BuildSelectedParas(); + +public: + + SwAccessibleMap( SwViewShell *pSh ); + virtual ~SwAccessibleMap() override; + + css::uno::Reference<css::accessibility::XAccessible> GetDocumentView(); + + css::uno::Reference<css::accessibility::XAccessible> GetDocumentPreview( + const std::vector<std::unique_ptr<PreviewPage>>& _rPreviewPages, + const Fraction& _rScale, + const SwPageFrame* _pSelectedPageFrame, + const Size& _rPreviewWinSize ); + + ::rtl::Reference < SwAccessibleContext > GetContextImpl( + const SwFrame *pFrame, + bool bCreate = true ); + css::uno::Reference<css::accessibility::XAccessible> GetContext( + const SwFrame *pFrame, + bool bCreate = true ); + + ::rtl::Reference < ::accessibility::AccessibleShape > GetContextImpl( + const SdrObject *pObj, + SwAccessibleContext *pParentImpl, + bool bCreate = true ); + css::uno::Reference<css::accessibility::XAccessible> GetContext( + const SdrObject *pObj, + SwAccessibleContext *pParentImpl, + bool bCreate = true ); + + SwViewShell* GetShell() const + { + return mpVSh; + } + static bool IsInSameLevel(const SdrObject* pObj, const SwFEShell* pFESh); + void AddShapeContext(const SdrObject *pObj, + css::uno::Reference < css::accessibility::XAccessible > const & xAccShape); + + void AddGroupContext(const SdrObject *pParentObj, + css::uno::Reference < css::accessibility::XAccessible > const & xAccParent); + void RemoveGroupContext(const SdrObject *pParentObj); + + const SwRect& GetVisArea() const; + + /** get size of a dedicated preview page + + @param _nPreviewPageNum + input parameter - physical page number of page visible in the page preview + + @return an object of class <Size> + */ + Size GetPreviewPageSize( sal_uInt16 _nPreviewPageNum ) const; + + void RemoveContext( const SwFrame *pFrame ); + void RemoveContext( const SdrObject *pObj ); + + // Dispose frame and its children if bRecursive is set + void A11yDispose( const SwFrame* pFrame, + const SdrObject* pObj, + vcl::Window* pWindow, + bool bRecursive = false, + bool bCanSkipInvisible = true ); + + void InvalidatePosOrSize( const SwFrame* pFrame, + const SdrObject* pObj, + vcl::Window* pWindow, + const SwRect& rOldFrame ); + + void InvalidateContent( const SwFrame *pFrame ); + + void InvalidateAttr( const SwTextFrame& rTextFrame ); + + void InvalidateCursorPosition( const SwFrame *pFrame ); + void InvalidateFocus(); + void SetCursorContext( + const ::rtl::Reference < SwAccessibleContext >& rCursorContext ); + + // Invalidate state of whole tree. If an action is open, this call + // is processed when the last action ends. + void InvalidateEditableStates( const SwFrame* _pFrame ); + + void InvalidateRelationSet( const SwFrame* pMaster, const SwFrame* pFollow ); + + /** invalidation CONTENT_FLOWS_FROM/_TO relation of a paragraph + + @param _rTextFrame + input parameter - reference to paragraph, whose CONTENT_FLOWS_FROM/_TO + has to be invalidated. + + @param _bFrom + input parameter - boolean indicating, if relation CONTENT_FLOWS_FROM + (value <true>) or CONTENT_FLOWS_TO (value <false>) has to be invalidated. + */ + void InvalidateParaFlowRelation( const SwTextFrame& _rTextFrame, + const bool _bFrom ); + + /** invalidation of text selection of a paragraph */ + void InvalidateParaTextSelection( const SwTextFrame& _rTextFrame ); + + /** invalidation of text selection of all paragraphs */ + void InvalidateTextSelectionOfAllParas(); + + sal_Int32 GetChildIndex( const SwFrame& rParentFrame, + vcl::Window& rChild ) const; + + // update preview data (and fire events if necessary) + void UpdatePreview( const std::vector<std::unique_ptr<PreviewPage>>& _rPreviewPages, + const Fraction& _rScale, + const SwPageFrame* _pSelectedPageFrame, + const Size& _rPreviewWinSize ); + + void InvalidatePreviewSelection( sal_uInt16 nSelPage ); + bool IsPageSelected( const SwPageFrame *pPageFrame ) const; + + void FireEvents(); + + const OUString& GetDocName() const { return maDocName; } + + // IAccessibleViewForwarder + + virtual tools::Rectangle GetVisibleArea() const override; + virtual Point LogicToPixel (const Point& rPoint) const override; + virtual Size LogicToPixel (const Size& rSize) const override; + + // IAccessibleParent + virtual bool ReplaceChild ( + ::accessibility::AccessibleShape* pCurrentChild, + const css::uno::Reference< css::drawing::XShape >& _rxShape, + const long _nIndex, + const ::accessibility::AccessibleShapeTreeInfo& _rShapeTreeInfo + ) override; + virtual ::accessibility::AccessibleControlShape* GetAccControlShapeFromModel + (css::beans::XPropertySet* pSet) override; + virtual css::uno::Reference< css::accessibility::XAccessible > GetAccessibleCaption ( + const css::uno::Reference< css::drawing::XShape > & xShape) override; + + // additional Core/Pixel conversions for internal use; also works + // for preview + Point PixelToCore (const Point& rPoint) const; + tools::Rectangle CoreToPixel (const tools::Rectangle& rRect) const; + + // is there a known accessibility impl cached for the frame + bool Contains(const SwFrame *pFrame) const; + +private: + /** get mapping mode for LogicToPixel and PixelToLogic conversions + + Replacement method <PreviewAdjust(..)> by new method <GetMapMode>. + Method returns mapping mode of current output device and adjusts it, + if the shell is in page/print preview. + Necessary, because <PreviewAdjust(..)> changes mapping mode at current + output device for mapping logic document positions to page preview window + positions and vice versa and doesn't take care to recover its changes. + + @param _rPoint + input parameter - constant reference to point to determine the mapping + mode adjustments for page/print preview. + + @param _orMapMode + output parameter - reference to the mapping mode, which is determined + by the method + */ + void GetMapMode( const Point& _rPoint, + MapMode& _orMapMode ) const; +public: + virtual bool IsDocumentSelAll() override; + + //Para Container for InvalidateCursorPosition + typedef o3tl::sorted_vector< SwAccessibleParagraph* > SET_PARA; + SET_PARA m_setParaAdd; + SET_PARA m_setParaRemove; +}; +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |