Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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: */