189 lines
8.1 KiB
C++
189 lines
8.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
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#define INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
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#include "rtattributehandler.hxx"
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#include "richtextviewport.hxx"
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#include "richtextengine.hxx"
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#include <vcl/scrbar.hxx>
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#include <editeng/editdata.hxx>
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#include <map>
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class EditView;
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class EditStatus;
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class Window;
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class SvxScriptSetItem;
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//........................................................................
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namespace frm
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{
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//........................................................................
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class ITextAttributeListener;
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class ITextSelectionListener;
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class RichTextViewPort;
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//====================================================================
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//= RichTextControlImpl
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//====================================================================
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class RichTextControlImpl : public IEngineStatusListener
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{
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typedef ::std::map< AttributeId, AttributeState > StateCache;
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typedef ::std::map< AttributeId, ::rtl::Reference< IAttributeHandler > > AttributeHandlerPool;
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typedef ::std::map< AttributeId, ITextAttributeListener* > AttributeListenerPool;
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StateCache m_aLastKnownStates;
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AttributeHandlerPool m_aAttributeHandlers;
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AttributeListenerPool m_aAttributeListeners;
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ESelection m_aLastKnownSelection;
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Control* m_pAntiImpl;
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RichTextViewPort* m_pViewport;
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ScrollBar* m_pHScroll;
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ScrollBar* m_pVScroll;
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ScrollBarBox* m_pScrollCorner;
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RichTextEngine* m_pEngine;
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EditView* m_pView;
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ITextAttributeListener* m_pTextAttrListener;
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ITextSelectionListener* m_pSelectionListener;
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bool m_bHasEverBeenShown;
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public:
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struct GrantAccess { friend class RichTextControl; private: GrantAccess() { } };
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inline EditView* getView( const GrantAccess& ) const { return m_pView; }
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inline RichTextEngine* getEngine( const GrantAccess& ) const { return m_pEngine; }
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inline Window* getViewport( const GrantAccess& ) const { return m_pViewport; }
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public:
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RichTextControlImpl( Control* _pAntiImpl, RichTextEngine* _pEngine,
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ITextAttributeListener* _pTextAttrListener, ITextSelectionListener* _pSelectionListener );
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virtual ~RichTextControlImpl();
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/** updates the cache with the state of all attribute values from the given set, notifies
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the listener if the state changed
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*/
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void updateAllAttributes( );
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/** updates the cache with the state of the attribute given by which id, notifies
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the listener if the state changed
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*/
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void updateAttribute( AttributeId _nAttribute );
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/// enables the callback for a particular attribute
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void enableAttributeNotification( AttributeId _nAttributeId, ITextAttributeListener* _pListener = NULL );
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/// disables the change notifications for a particular attribute
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void disableAttributeNotification( AttributeId _nAttributeId );
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/// executes a toggle of the given attribute
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bool executeAttribute( const SfxItemSet& _rCurrentAttribs, SfxItemSet& _rNewAttribs, AttributeId _nAttribute, const SfxPoolItem* _pArgument, ScriptType _nForScriptType );
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/// retrieves the state of the given attribute from the cache
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AttributeState getAttributeState( AttributeId _nAttributeId ) const;
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/** normalizes the given item so that the state of script dependent attributes
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is correct considering the current script type
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There are some attributes which are script dependent, e.g. the CharPosture. This means
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that in real, there are 3 attributes for this, one for every possible script type (latin,
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asian, complex). However, to the out world, we behave as if there is only one attribute:
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E.g., if the outer world asks for the state of the "CharPosture" attribute, we return
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the state of either CharPostureLatin, CharPostureAsian, or CharPostureComplex, depending
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on the script type of the current selection. (In real, it may be more complex since
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the current selection may contain more than one script type.)
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This method normalizes a script dependent attribute, so that it's state takes into account
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the currently selected script type.
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*/
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void normalizeScriptDependentAttribute( SvxScriptSetItem& _rScriptSetItem );
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// gets the script type of the selection in our edit view (with fallback)
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ScriptType getSelectedScriptType() const;
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/** re-arranges the view and the scrollbars
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*/
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void layoutWindow();
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/** to be called when the style of our window changed
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*/
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void notifyStyleChanged();
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/** to be called when the zoom of our window changed
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*/
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void notifyZoomChanged();
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/** to be called when the STATE_CHANGE_INITSHOW event arrives
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*/
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void notifyInitShow();
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// VCL "overrides"
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void SetBackgroundColor( );
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void SetBackgroundColor( const Color& _rColor );
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void SetReadOnly( bool _bReadOnly );
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bool IsReadOnly() const;
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void SetHideInactiveSelection( bool _bHide );
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bool GetHideInactiveSelection() const;
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/// draws the control onto a given output device
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void Draw( OutputDevice* _pDev, const Point& _rPos, const Size& _rSize, sal_uLong _nFlags );
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/// handles command events arrived at the anti-impl control
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long HandleCommand( const CommandEvent& _rEvent );
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private:
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// updates the cache with the state provided by the given attribut handler
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void implUpdateAttribute( AttributeHandlerPool::const_iterator _pHandler );
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// updates the cache with the given state, and calls listeners (if necessary)
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void implCheckUpdateCache( AttributeId _nAttribute, const AttributeState& _rState );
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// updates range and position of our scrollbars
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void updateScrollbars();
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// determines whether automatic (soft) line breaks are ON
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bool windowHasAutomaticLineBreak();
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/// hides or shows our scrollbars, according to the current WinBits of the window
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void ensureScrollbars();
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/// ensures that our "automatic line break" setting matches the current WinBits of the window
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void ensureLineBreakSetting();
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inline bool hasVScrollBar( ) const { return m_pVScroll != NULL; }
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inline bool hasHScrollBar( ) const { return m_pHScroll != NULL; }
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// IEngineStatusListener overridables
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virtual void EditEngineStatusChanged( const EditStatus& _rStatus );
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private:
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DECL_LINK( OnInvalidateAllAttributes, void* );
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DECL_LINK( OnHScroll, ScrollBar* );
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DECL_LINK( OnVScroll, ScrollBar* );
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};
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//........................................................................
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} // namespace frm
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//........................................................................
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#endif // INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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