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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 INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
20 : #define INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_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 : namespace vcl { class Window; }
33 : class SvxScriptSetItem;
34 :
35 : namespace frm
36 : {
37 :
38 :
39 : class ITextAttributeListener;
40 : class ITextSelectionListener;
41 : class RichTextViewPort;
42 :
43 : class RichTextControlImpl : public IEngineStatusListener
44 : {
45 : typedef ::std::map< AttributeId, AttributeState > StateCache;
46 : typedef ::std::map< AttributeId, ::rtl::Reference< IAttributeHandler > > AttributeHandlerPool;
47 : typedef ::std::map< AttributeId, ITextAttributeListener* > AttributeListenerPool;
48 :
49 : StateCache m_aLastKnownStates;
50 : AttributeHandlerPool m_aAttributeHandlers;
51 : AttributeListenerPool m_aAttributeListeners;
52 :
53 : ESelection m_aLastKnownSelection;
54 :
55 : VclPtr<Control> m_pAntiImpl;
56 : VclPtr<RichTextViewPort> m_pViewport;
57 : VclPtr<ScrollBar> m_pHScroll;
58 : VclPtr<ScrollBar> m_pVScroll;
59 : VclPtr<ScrollBarBox> m_pScrollCorner;
60 : RichTextEngine* m_pEngine;
61 : EditView* m_pView;
62 : ITextAttributeListener* m_pTextAttrListener;
63 : ITextSelectionListener* m_pSelectionListener;
64 : bool m_bHasEverBeenShown;
65 :
66 : public:
67 0 : struct GrantAccess { friend class RichTextControl; private: GrantAccess() { } };
68 0 : inline EditView* getView( const GrantAccess& ) const { return m_pView; }
69 0 : inline RichTextEngine* getEngine( const GrantAccess& ) const { return m_pEngine; }
70 0 : inline vcl::Window* getViewport( const GrantAccess& ) const { return m_pViewport; }
71 :
72 : public:
73 : RichTextControlImpl( Control* _pAntiImpl, RichTextEngine* _pEngine,
74 : ITextAttributeListener* _pTextAttrListener, ITextSelectionListener* _pSelectionListener );
75 : virtual ~RichTextControlImpl();
76 :
77 : /** updates the cache with the state of all attribute values from the given set, notifies
78 : the listener if the state changed
79 : */
80 : void updateAllAttributes( );
81 :
82 : /** updates the cache with the state of the attribute given by which id, notifies
83 : the listener if the state changed
84 : */
85 : void updateAttribute( AttributeId _nAttribute );
86 :
87 : /// enables the callback for a particular attribute
88 : void enableAttributeNotification( AttributeId _nAttributeId, ITextAttributeListener* _pListener = NULL );
89 :
90 : /// disables the change notifications for a particular attribute
91 : void disableAttributeNotification( AttributeId _nAttributeId );
92 :
93 : /// executes a toggle of the given attribute
94 : bool executeAttribute( const SfxItemSet& _rCurrentAttribs, SfxItemSet& _rNewAttribs, AttributeId _nAttribute, const SfxPoolItem* _pArgument, SvtScriptType _nForScriptType );
95 :
96 : /// retrieves the state of the given attribute from the cache
97 : AttributeState getAttributeState( AttributeId _nAttributeId ) const;
98 :
99 : /** normalizes the given item so that the state of script dependent attributes
100 : is correct considering the current script type
101 :
102 : There are some attributes which are script dependent, e.g. the CharPosture. This means
103 : that in real, there are 3 attributes for this, one for every possible script type (latin,
104 : asian, complex). However, to the out world, we behave as if there is only one attribute:
105 : E.g., if the outer world asks for the state of the "CharPosture" attribute, we return
106 : the state of either CharPostureLatin, CharPostureAsian, or CharPostureComplex, depending
107 : on the script type of the current selection. (In real, it may be more complex since
108 : the current selection may contain more than one script type.)
109 :
110 : This method normalizes a script dependent attribute, so that it's state takes into account
111 : the currently selected script type.
112 : */
113 : void normalizeScriptDependentAttribute( SvxScriptSetItem& _rScriptSetItem );
114 :
115 : // gets the script type of the selection in our edit view (with fallback)
116 : SvtScriptType getSelectedScriptType() const;
117 :
118 : /** re-arranges the view and the scrollbars
119 : */
120 : void layoutWindow();
121 :
122 : /** to be called when the style of our window changed
123 : */
124 : void notifyStyleChanged();
125 :
126 : /** to be called when the zoom of our window changed
127 : */
128 : void notifyZoomChanged();
129 :
130 : /** to be called when the StateChangedType::InitShow event arrives
131 : */
132 : void notifyInitShow();
133 :
134 : // VCL "overrides"
135 : void SetBackgroundColor( );
136 : void SetBackgroundColor( const Color& _rColor );
137 :
138 : void SetReadOnly( bool _bReadOnly );
139 : bool IsReadOnly() const;
140 :
141 : void SetHideInactiveSelection( bool _bHide );
142 : bool GetHideInactiveSelection() const;
143 :
144 : /// draws the control onto a given output device
145 : void Draw( OutputDevice* _pDev, const Point& _rPos, const Size& _rSize, DrawFlags _nFlags );
146 :
147 : /// handles command events arrived at the anti-impl control
148 : long HandleCommand( const CommandEvent& _rEvent );
149 :
150 : private:
151 : // updates the cache with the state provided by the given attribute handler
152 : void implUpdateAttribute( AttributeHandlerPool::const_iterator _pHandler );
153 :
154 : // updates the cache with the given state, and calls listeners (if necessary)
155 : void implCheckUpdateCache( AttributeId _nAttribute, const AttributeState& _rState );
156 :
157 : // updates range and position of our scrollbars
158 : void updateScrollbars();
159 :
160 : // determines whether automatic (soft) line breaks are ON
161 : bool windowHasAutomaticLineBreak();
162 :
163 : /// hides or shows our scrollbars, according to the current WinBits of the window
164 : void ensureScrollbars();
165 :
166 : /// ensures that our "automatic line break" setting matches the current WinBits of the window
167 : void ensureLineBreakSetting();
168 :
169 64 : inline bool hasVScrollBar( ) const { return m_pVScroll != nullptr; }
170 54 : inline bool hasHScrollBar( ) const { return m_pHScroll != nullptr; }
171 :
172 : // IEngineStatusListener overridables
173 : virtual void EditEngineStatusChanged( const EditStatus& _rStatus ) SAL_OVERRIDE;
174 :
175 : private:
176 : DECL_LINK( OnInvalidateAllAttributes, void* );
177 : DECL_LINK( OnHScroll, ScrollBar* );
178 : DECL_LINK( OnVScroll, ScrollBar* );
179 : };
180 :
181 :
182 : } // namespace frm
183 :
184 :
185 : #endif // INCLUDED_FORMS_SOURCE_RICHTEXT_RICHTEXTIMPLCONTROL_HXX
186 :
187 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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