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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_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
#define INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
#include "rtattributehandler.hxx"
#include "richtextviewport.hxx"
#include "richtextengine.hxx"
#include <vcl/scrbar.hxx>
#include <editeng/editdata.hxx>
#include <map>
class EditView;
class EditStatus;
namespace vcl { class Window; }
class SvxScriptSetItem;
namespace frm
{
class ITextAttributeListener;
class ITextSelectionListener;
class RichTextViewPort;
class RichTextControlImpl : public IEngineStatusListener
{
typedef ::std::map< AttributeId, AttributeState > StateCache;
typedef ::std::map< AttributeId, ::rtl::Reference< AttributeHandler > > AttributeHandlerPool;
typedef ::std::map< AttributeId, ITextAttributeListener* > AttributeListenerPool;
StateCache m_aLastKnownStates;
AttributeHandlerPool m_aAttributeHandlers;
AttributeListenerPool m_aAttributeListeners;
ESelection m_aLastKnownSelection;
VclPtr<Control> m_pAntiImpl;
VclPtr<RichTextViewPort> m_pViewport;
VclPtr<ScrollBar> m_pHScroll;
VclPtr<ScrollBar> m_pVScroll;
VclPtr<ScrollBarBox> m_pScrollCorner;
RichTextEngine* m_pEngine;
std::unique_ptr<EditView> m_pView;
ITextAttributeListener* m_pTextAttrListener;
ITextSelectionListener* m_pSelectionListener;
bool m_bHasEverBeenShown;
public:
struct GrantAccess { friend class RichTextControl; private: GrantAccess() { } };
EditView* getView( const GrantAccess& ) const { return m_pView.get(); }
RichTextEngine* getEngine( const GrantAccess& ) const { return m_pEngine; }
vcl::Window* getViewport( const GrantAccess& ) const { return m_pViewport; }
public:
RichTextControlImpl( Control* _pAntiImpl, RichTextEngine* _pEngine,
ITextAttributeListener* _pTextAttrListener, ITextSelectionListener* _pSelectionListener );
virtual ~RichTextControlImpl();
/** updates the cache with the state of all attribute values from the given set, notifies
the listener if the state changed
*/
void updateAllAttributes( );
/** updates the cache with the state of the attribute given by which id, notifies
the listener if the state changed
*/
void updateAttribute( AttributeId _nAttribute );
/// enables the callback for a particular attribute
void enableAttributeNotification( AttributeId _nAttributeId, ITextAttributeListener* _pListener );
/// disables the change notifications for a particular attribute
void disableAttributeNotification( AttributeId _nAttributeId );
/// executes a toggle of the given attribute
bool executeAttribute( const SfxItemSet& _rCurrentAttribs, SfxItemSet& _rNewAttribs, AttributeId _nAttribute, const SfxPoolItem* _pArgument, SvtScriptType _nForScriptType );
/// retrieves the state of the given attribute from the cache
AttributeState getAttributeState( AttributeId _nAttributeId ) const;
/** normalizes the given item so that the state of script dependent attributes
is correct considering the current script type
There are some attributes which are script dependent, e.g. the CharPosture. This means
that in real, there are 3 attributes for this, one for every possible script type (latin,
asian, complex). However, to the out world, we behave as if there is only one attribute:
E.g., if the outer world asks for the state of the "CharPosture" attribute, we return
the state of either CharPostureLatin, CharPostureAsian, or CharPostureComplex, depending
on the script type of the current selection. (In real, it may be more complex since
the current selection may contain more than one script type.)
This method normalizes a script dependent attribute, so that it's state takes into account
the currently selected script type.
*/
void normalizeScriptDependentAttribute( SvxScriptSetItem& _rScriptSetItem );
// gets the script type of the selection in our edit view (with fallback)
SvtScriptType getSelectedScriptType() const;
/** re-arranges the view and the scrollbars
*/
void layoutWindow();
/** to be called when the style of our window changed
*/
void notifyStyleChanged();
/** to be called when the zoom of our window changed
*/
void notifyZoomChanged();
/** to be called when the StateChangedType::InitShow event arrives
*/
void notifyInitShow();
// VCL "overrides"
void SetBackgroundColor( );
void SetBackgroundColor( const Color& _rColor );
void SetReadOnly( bool _bReadOnly );
bool IsReadOnly() const;
void SetHideInactiveSelection( bool _bHide );
bool GetHideInactiveSelection() const;
/// draws the control onto a given output device
void Draw( OutputDevice* _pDev, const Point& _rPos, const Size& _rSize );
/// handles command events arrived at the anti-impl control
bool HandleCommand( const CommandEvent& _rEvent );
private:
// updates the cache with the state provided by the given attribute handler
void implUpdateAttribute( const AttributeHandlerPool::const_iterator& _pHandler );
// updates the cache with the given state, and calls listeners (if necessary)
void implCheckUpdateCache( AttributeId _nAttribute, const AttributeState& _rState );
// updates range and position of our scrollbars
void updateScrollbars();
// determines whether automatic (soft) line breaks are ON
bool windowHasAutomaticLineBreak();
/// hides or shows our scrollbars, according to the current WinBits of the window
void ensureScrollbars();
/// ensures that our "automatic line break" setting matches the current WinBits of the window
void ensureLineBreakSetting();
bool hasVScrollBar( ) const { return m_pVScroll != nullptr; }
bool hasHScrollBar( ) const { return m_pHScroll != nullptr; }
// IEngineStatusListener overridables
virtual void EditEngineStatusChanged( const EditStatus& _rStatus ) override;
private:
DECL_LINK( OnInvalidateAllAttributes, LinkParamNone*, void );
DECL_LINK( OnHScroll, ScrollBar*, void );
DECL_LINK( OnVScroll, ScrollBar*, void );
};
} // namespace frm
#endif // INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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