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Diffstat (limited to 'forms/source/richtext/richtextimplcontrol.hxx')
| -rw-r--r-- | forms/source/richtext/richtextimplcontrol.hxx | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/forms/source/richtext/richtextimplcontrol.hxx b/forms/source/richtext/richtextimplcontrol.hxx new file mode 100644 index 000000000..d4fef2f66 --- /dev/null +++ b/forms/source/richtext/richtextimplcontrol.hxx @@ -0,0 +1,184 @@ +/* -*- 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 "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 + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |