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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 : #ifndef FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTOL_HXX
20 : #define FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTOL_HXX
21 :
22 : #include "rtattributehandler.hxx"
23 : #include "richtextviewport.hxx"
24 : #include "richtextengine.hxx"
25 : #include <vcl/scrbar.hxx>
26 : #include <editeng/editdata.hxx>
27 :
28 : #include <map>
29 :
30 : class EditView;
31 : class EditStatus;
32 : class Window;
33 : class SvxScriptSetItem;
34 : //........................................................................
35 : namespace frm
36 : {
37 : //........................................................................
38 :
39 : class ITextAttributeListener;
40 : class ITextSelectionListener;
41 : class RichTextViewPort;
42 : //====================================================================
43 : //= RichTextControlImpl
44 : //====================================================================
45 : class RichTextControlImpl : public IEngineStatusListener
46 : {
47 : typedef ::std::map< AttributeId, AttributeState > StateCache;
48 : typedef ::std::map< AttributeId, ::rtl::Reference< IAttributeHandler > > AttributeHandlerPool;
49 : typedef ::std::map< AttributeId, ITextAttributeListener* > AttributeListenerPool;
50 :
51 : StateCache m_aLastKnownStates;
52 : AttributeHandlerPool m_aAttributeHandlers;
53 : AttributeListenerPool m_aAttributeListeners;
54 :
55 : ESelection m_aLastKnownSelection;
56 :
57 : Control* m_pAntiImpl;
58 : RichTextViewPort* m_pViewport;
59 : ScrollBar* m_pHScroll;
60 : ScrollBar* m_pVScroll;
61 : ScrollBarBox* m_pScrollCorner;
62 : RichTextEngine* m_pEngine;
63 : EditView* m_pView;
64 : ITextAttributeListener* m_pTextAttrListener;
65 : ITextSelectionListener* m_pSelectionListener;
66 : bool m_bHasEverBeenShown;
67 :
68 : public:
69 0 : struct GrantAccess { friend class RichTextControl; private: GrantAccess() { } };
70 0 : inline EditView* getView( const GrantAccess& ) const { return m_pView; }
71 0 : inline RichTextEngine* getEngine( const GrantAccess& ) const { return m_pEngine; }
72 0 : inline Window* getViewport( const GrantAccess& ) const { return m_pViewport; }
73 :
74 : public:
75 : RichTextControlImpl( Control* _pAntiImpl, RichTextEngine* _pEngine,
76 : ITextAttributeListener* _pTextAttrListener, ITextSelectionListener* _pSelectionListener );
77 : virtual ~RichTextControlImpl();
78 :
79 : /** updates the cache with the state of all attribute values from the given set, notifies
80 : the listener if the state changed
81 : */
82 : void updateAllAttributes( );
83 :
84 : /** updates the cache with the state of the attribute given by which id, notifies
85 : the listener if the state changed
86 : */
87 : void updateAttribute( AttributeId _nAttribute );
88 :
89 : /// enables the callback for a particular attribute
90 : void enableAttributeNotification( AttributeId _nAttributeId, ITextAttributeListener* _pListener = NULL );
91 :
92 : /// disables the change notifications for a particular attribute
93 : void disableAttributeNotification( AttributeId _nAttributeId );
94 :
95 : /// executes a toggle of the given attribute
96 : bool executeAttribute( const SfxItemSet& _rCurrentAttribs, SfxItemSet& _rNewAttribs, AttributeId _nAttribute, const SfxPoolItem* _pArgument, ScriptType _nForScriptType );
97 :
98 : /// retrieves the state of the given attribute from the cache
99 : AttributeState getAttributeState( AttributeId _nAttributeId ) const;
100 :
101 : /** normalizes the given item so that the state of script dependent attributes
102 : is correct considering the current script type
103 :
104 : There are some attributes which are script dependent, e.g. the CharPosture. This means
105 : that in real, there are 3 attributes for this, one for every possible script type (latin,
106 : asian, complex). However, to the out world, we behave as if there is only one attribute:
107 : E.g., if the outter world asks for the state of the "CharPosture" attribute, we return
108 : the state of either CharPostureLatin, CharPostureAsian, or CharPostureComplex, depending
109 : on the script type of the current selection. (In real, it may be more complex since
110 : the current selection may contain more than one script type.)
111 :
112 : This method normalizes a script dependent attribute, so that it's state takes into account
113 : the currently selected script type.
114 : */
115 : void normalizeScriptDependentAttribute( SvxScriptSetItem& _rScriptSetItem );
116 :
117 : // gets the script type of the selection in our edit view (with fallback)
118 : ScriptType getSelectedScriptType() const;
119 :
120 : /** re-arranges the view and the scrollbars
121 : */
122 : void layoutWindow();
123 :
124 : /** to be called when the style of our window changed
125 : */
126 : void notifyStyleChanged();
127 :
128 : /** to be called when the zoom of our window changed
129 : */
130 : void notifyZoomChanged();
131 :
132 : /** to be called when the STATE_CHANGE_INITSHOW event arrives
133 : */
134 : void notifyInitShow();
135 :
136 : // VCL "overrides"
137 : void SetBackgroundColor( );
138 : void SetBackgroundColor( const Color& _rColor );
139 :
140 : void SetReadOnly( bool _bReadOnly );
141 : bool IsReadOnly() const;
142 :
143 : void SetHideInactiveSelection( bool _bHide );
144 : bool GetHideInactiveSelection() const;
145 :
146 : /// draws the control onto a given output device
147 : void Draw( OutputDevice* _pDev, const Point& _rPos, const Size& _rSize, sal_uLong _nFlags );
148 :
149 : /// handles command events arrived at the anti-impl control
150 : long HandleCommand( const CommandEvent& _rEvent );
151 :
152 : private:
153 : // updates the cache with the state provided by the given attribut handler
154 : void implUpdateAttribute( AttributeHandlerPool::const_iterator _pHandler );
155 :
156 : // updates the cache with the given state, and calls listeners (if necessary)
157 : void implCheckUpdateCache( AttributeId _nAttribute, const AttributeState& _rState );
158 :
159 : // updates range and position of our scrollbars
160 : void updateScrollbars();
161 :
162 : // determines whether automatic (soft) line breaks are ON
163 : bool windowHasAutomaticLineBreak();
164 :
165 : /// hides or shows our scrollbars, according to the current WinBits of the window
166 : void ensureScrollbars();
167 :
168 : /// ensures that our "automatic line break" setting matches the current WinBits of the window
169 : void ensureLineBreakSetting();
170 :
171 0 : inline bool hasVScrollBar( ) const { return m_pVScroll != NULL; }
172 0 : inline bool hasHScrollBar( ) const { return m_pHScroll != NULL; }
173 :
174 : // IEngineStatusListener overridables
175 : virtual void EditEngineStatusChanged( const EditStatus& _rStatus );
176 :
177 : private:
178 : DECL_LINK( OnInvalidateAllAttributes, void* );
179 : DECL_LINK( OnHScroll, ScrollBar* );
180 : DECL_LINK( OnVScroll, ScrollBar* );
181 : };
182 :
183 : //........................................................................
184 : } // namespace frm
185 : //........................................................................
186 :
187 : #endif // FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTOL_HXX
188 :
189 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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