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| -rw-r--r-- | starmath/inc/node.hxx | 2110 |
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diff --git a/starmath/inc/node.hxx b/starmath/inc/node.hxx new file mode 100644 index 000000000..0a8a6c369 --- /dev/null +++ b/starmath/inc/node.hxx @@ -0,0 +1,2110 @@ +/* -*- 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 . + */ + +/** The SmNode is the basic structure of formula data. + * + * Each token is stored in one node of specific kind. + * They can have SmNodeType. It allows to identify node type after abstraction. + * Here goes the subclasses tree: + * + * SmRect + * SmNode + * SmStructureNode Head of tree diagram + * SmTableNode binom + * SmLineNode A line + * SmExpressionNode { content } + * SmUnHorNode unary operators +-; -+; +x; -x; ... + * SmRootNode Root structure + * SmBinHorNode binary operators A + B + * SmBinVerNode over; frac; ... + * SmBinDiagonalNode wideslash + * SmSubSupNode csub, csup, lsub, from, to, ... + * SmBraceNode (); []; left lbrace right rbrace; ... + * SmBracebodyNode ( content ); [ content ]; ... + * SmVerticalBraceNode overbrace; underbrace; + * SmOperNode sum from to; int from to; + * SmAlignNode text alignment + * SmAttributeNode font attributes; bold; + * SmFontNode font serif; ... + * SmMatrixNode matrix + * SmVisibleNode drawable node + * SmGraphicNode graphics display + * SmRectangleNode + * SmPolyLineNode overline; underline; widehat; ... + * SmBlankNode blank space; ~; ... + * SmTextNode "text"; func functname; ... + * SmSpecialNode + * SmGlyphSpecialNode %symbolname + * SmMathSymbolNode math symbols + * SmMathIdentifierNode variable + * SmRootSymbolNode root symbol + * SmPlaceNode <?> + * SmErrorNode red ? for errors + * + */ + +#pragma once + +#include "types.hxx" +#include "token.hxx" +#include "rect.hxx" +#include "format.hxx" +#include "nodetype.hxx" + +#include <editeng/editdata.hxx> +#include <rtl/ustrbuf.hxx> + +enum class FontAttribute { + None = 0x0000, + Bold = 0x0001, + Italic = 0x0002 +}; + +namespace o3tl +{ + template<> struct typed_flags<FontAttribute> : is_typed_flags<FontAttribute, 0x0003> {}; +} + + +enum class FontSizeType { + ABSOLUT = 1, + PLUS = 2, + MINUS = 3, + MULTIPLY = 4, + DIVIDE = 5 +}; + +// flags to interdict respective status changes +enum class FontChangeMask { + None = 0x0000, + Face = 0x0001, + Size = 0x0002, + Bold = 0x0004, + Italic = 0x0008, + Color = 0x0010, + Phantom = 0x0020 +}; + +namespace o3tl +{ + template<> struct typed_flags<FontChangeMask> : is_typed_flags<FontChangeMask, 0x003f> {}; +} + + +class SmVisitor; +class SmDocShell; +class SmNode; +class SmStructureNode; + +typedef std::vector< SmNode * > SmNodeArray; + +enum class SmScaleMode +{ + None, + Width, + Height +}; + +class SmNode : public SmRect +{ + // Rendering info for SmRect + SmFace maFace; + // Anclage to the code + SmToken maNodeToken; + ESelection m_aESelection; + // Node information + SmNodeType meType; + SmScaleMode meScaleMode; + RectHorAlign meRectHorAlign; + FontChangeMask mnFlags; + FontAttribute mnAttributes; + bool mbIsPhantom; + bool mbIsSelected; + // index in accessible text; -1 if not (yet) applicable + sal_Int32 mnAccIndex; + +protected: + SmNode(SmNodeType eNodeType, const SmToken &rNodeToken); + +public: + SmNode(const SmNode&) = delete; + SmNode& operator=(const SmNode&) = delete; + + virtual ~SmNode(); + + /** + * Checks node visibility. + * Returns true if this is an instance of SmVisibleNode's subclass, false otherwise. + * @return node visibility + */ + virtual bool IsVisible() const = 0; + + /** + * Gets the number of subnodes. + * @return number of subnodes + */ + virtual size_t GetNumSubNodes() const = 0; + + /** + * Gets the subnode of index nIndex. + * @param nIndex + * @return subnode of index nIndex + */ + virtual SmNode * GetSubNode(size_t nIndex) = 0; + const SmNode * GetSubNode(size_t nIndex) const + { return const_cast<SmNode *>(this)->GetSubNode(nIndex); } + + virtual const SmNode * GetLeftMost() const; + + /** + * Gets the FontChangeMask flags. + * @return FontChangeMask flags + */ + FontChangeMask &Flags() { return mnFlags; } + + /** + * Gets the font attributes. + * @return font attributes + */ + FontAttribute &Attributes() { return mnAttributes; } + + /** + * Checks if it is a visible node rendered invisible. + * @return rendered visibility + */ + bool IsPhantom() const { return mbIsPhantom; } + + /** + * Sets the render visibility of a visible node to bIsPhantom. + * @param bIsPhantom + * @return + */ + void SetPhantom(bool bIsPhantom); + + /** + * Sets the font color. + * @param rColor + * @return + */ + void SetColor(const Color &rColor); + + /** + * Sets the font attribute nAttrib. + * Check FontAttribute class. + * @param nAttrib + * @return + */ + void SetAttribute(FontAttribute nAttrib); + + /** + * Clears the font attribute nAttrib. + * Check FontAttribute class. + * @param nAttrib + * @return + */ + void ClearAttribute(FontAttribute nAttrib); + + /** + * Gets the font. + * @return font + */ + const SmFace & GetFont() const { return maFace; }; + SmFace & GetFont() { return maFace; }; + + /** + * Sets the font to rFace. + * @param rFace + * @return + */ + void SetFont(const SmFace &rFace); + + /** + * Sets the font size to rRelSize with type nType. + * Check FontSizeType for details. + * @param rRelSize + * @param nType + * @return + */ + void SetFontSize(const Fraction &rRelSize, FontSizeType nType); + + /** + * Sets the font size to rRelSize with type FontSizeType::ABSOLUT. + * @param rScale + * @return + */ + void SetSize(const Fraction &rScale); + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, int nDepth); + + /** + * Prepare preliminary font attributes + * Called on Prepare(...). + * @return + */ + void PrepareAttributes(); + + /** + * Sets the alignment of the text. + * Check RectHorAlign class for details. + * The subtrees will be affected if bApplyToSubTree. + * @param eHorAlign + * @param bApplyToSubTree + * @return + */ + void SetRectHorAlign(RectHorAlign eHorAlign, bool bApplyToSubTree = true ); + + /** + * Gets the alignment of the text. + * @return alignment of the text + */ + RectHorAlign GetRectHorAlign() const { return meRectHorAlign; } + + /** + * Parses itself to SmRect. + * @return this + */ + const SmRect & GetRect() const { return *this; } + + /** + * Moves the rectangle by rVector. + * @param rVector + * @return + */ + void Move(const Point &rVector); + + /** + * Moves the rectangle to rPoint, being the top left corner the origin. + * @param rPoint + * @return + */ + void MoveTo(const Point &rPoint) { Move(rPoint - GetTopLeft()); } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) = 0; + + /** + * Appends to rText the node text. + * @param rText + * @return + */ + virtual void GetAccessibleText( OUStringBuffer &rText ) const = 0; + + /** + * Gets the node accessible index. + * Used for visual editing. + * @return node accessible index + */ + sal_Int32 GetAccessibleIndex() const { return mnAccIndex; } + + /** + * Sets the node accessible index to nAccIndex. + * Used for visual editing. + * @param nAccIndex + * @return + */ + void SetAccessibleIndex(sal_Int32 nAccIndex) { mnAccIndex = nAccIndex; } + + /** + * Finds the node with accessible index nAccIndex. + * Used for visual editing. + * @param nAccIndex + * @return node with accessible index nAccIndex + */ + const SmNode * FindNodeWithAccessibleIndex(sal_Int32 nAccIndex) const; + + /** + * Gets the line in the text where the node is located. + * It is used to do the visual <-> text correspondence. + * @return line + */ + sal_uInt16 GetRow() const { return sal::static_int_cast<sal_uInt16>(m_aESelection.nStartPara); } + + /** + * Gets the column of the line in the text where the node is located. + * It is used to do the visual <-> text correspondence. + * @return column + */ + sal_uInt16 GetColumn() const { return sal::static_int_cast<sal_uInt16>(m_aESelection.nStartPos); } + + /** + * Gets the scale mode. + * @return scale mode + */ + SmScaleMode GetScaleMode() const { return meScaleMode; } + + /** + * Sets the scale mode to eMode. + * @param eMode + * @return + */ + void SetScaleMode(SmScaleMode eMode) { meScaleMode = eMode; } + + //visual stuff TODO comment + virtual void AdaptToX(OutputDevice &rDev, sal_uLong nWidth); + virtual void AdaptToY(OutputDevice &rDev, sal_uLong nHeight); + + /** + * Gets the node type. + * @return node type + */ + SmNodeType GetType() const { return meType; } + + /** + * Gets the token. + * The token contains the data extracted from the text mode. + * Ej: text, type (sub, sup, int,...), row and column,... + * @return node type + */ + const SmToken & GetToken() const { return maNodeToken; } + SmToken & GetToken() { return maNodeToken; } + + /** + * Gets node position in input text. + * @return node position in input text + */ + const ESelection& GetSelection() const { return m_aESelection; } + + /** + * Gets node position in input text. + * @param aESelection + */ + void SetSelection(ESelection aESelection) { m_aESelection = aESelection; } + + /** + * Finds the node from the position in the text. + * It is used to do the visual <-> text correspondence. + * @param nRow + * @param nCol + * @return the given node + */ + const SmNode * FindTokenAt(sal_uInt16 nRow, sal_uInt16 nCol) const; + + /** + * Finds the closest rectangle in the screen. + * @param rPoint + * @return the given node + */ + const SmNode * FindRectClosestTo(const Point &rPoint) const; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + virtual void Accept(SmVisitor* pVisitor) = 0; + + /** + * Checks if the node is selected. + * @return the node is selected + */ + bool IsSelected() const {return mbIsSelected;} + + /** + * Sets the node to Selected. + * @param Selected + * @return + */ + void SetSelected(bool Selected) {mbIsSelected = Selected;} + + /** + * Gets the parent node of this node. + * @return parent node + */ + const SmStructureNode* GetParent() const { return mpParentNode; } + SmStructureNode* GetParent() { return mpParentNode; } + + /** + * Sets the parent node. + * @param parent + * @return + */ + void SetParent(SmStructureNode* parent){ mpParentNode = parent; } + + /** + * Sets the token for this node. + * @param token + * @return + */ + void SetToken(SmToken const & token){ maNodeToken = token; } + +private: + SmStructureNode* mpParentNode; +}; + + +/** Abstract baseclass for all composite node + * + * Subclasses of this class can have subnodes. Nodes that doesn't derivate from + * this class does not have subnodes. + */ +class SmStructureNode : public SmNode +{ + SmNodeArray maSubNodes; + +protected: + SmStructureNode(SmNodeType eNodeType, const SmToken &rNodeToken, size_t nSize = 0) + : SmNode(eNodeType, rNodeToken) + , maSubNodes(nSize) {} + +public: + virtual ~SmStructureNode() override; + + /** + * Checks node visibility. + * Returns true if this is an instance of SmVisibleNode's subclass, false otherwise. + * @return node visibility + */ + virtual bool IsVisible() const override; + + /** + * Gets the number of subnodes. + * @return number of subnodes + */ + virtual size_t GetNumSubNodes() const override; + + /** + * Gets the subnode of index nIndex. + * @param nIndex + * @return subnode of index nIndex + */ + using SmNode::GetSubNode; + virtual SmNode * GetSubNode(size_t nIndex) override; + + /** + * Gets the subnode of index nIndex, used for operators. + * @param nIndex + * @return subnode of index nIndex + */ + SmNode * GetSubNodeBinMo(size_t nIndex) const; + + /** + * Does the cleaning of the subnodes. + * @return + */ + void ClearSubNodes(); + + /** + * Sets subnodes, used for operators. + * @param pFirst + * @param pSecond + * @param pThird + * @return + */ + void SetSubNodes(std::unique_ptr<SmNode> pFirst, std::unique_ptr<SmNode> pSecond, + std::unique_ptr<SmNode> pThird = nullptr); + + /** + * Sets subnodes. + * @param pFirst + * @param pSecond + * @param pThird + * @return + */ + void SetSubNodes(SmNode* pFirst, SmNode* pSecond, SmNode* pThird); + + /** + * Sets subnodes, used for operators. + * The data is reordered so the items are correctly ordered. + * @param pFirst + * @param pSecond + * @param pThird + * @return + */ + void SetSubNodesBinMo(std::unique_ptr<SmNode> pFirst, std::unique_ptr<SmNode> pSecond, + std::unique_ptr<SmNode> pThird = nullptr); + + /** + * Sets subnodes, used for operators. + * The data is reordered so the items are correctly ordered. + * @param pFirst + * @param pSecond + * @param pThird + * @return + */ + void SetSubNodesBinMo(SmNode* pFirst, SmNode* pSecond, SmNode* pThird); + + /** + * Sets subnodes. + * @param rNodeArray + * @return + */ + void SetSubNodes(SmNodeArray&& rNodeArray); + + /** + * Appends to rText the node text. + * @param rText + * @return + */ + virtual void GetAccessibleText( OUStringBuffer &rText ) const override; + + /** + * Gets the first subnode. + * @return first subnode + */ + SmNodeArray::iterator begin() {return maSubNodes.begin();} + + /** + * Gets the last subnode. + * @return last subnode + */ + SmNodeArray::iterator end() {return maSubNodes.end();} + + /** + * Gets the last subnode. + * @return last subnode + */ + SmNodeArray::reverse_iterator rbegin() {return maSubNodes.rbegin();} + + /** + * Gets the first subnode. + * @return first subnode + */ + SmNodeArray::reverse_iterator rend() {return maSubNodes.rend();} + + /** + * Get the index of the child node pSubNode. + * Returns -1, if pSubNode isn't a subnode of this. + * @param pSubNode + * @return index of the child node + */ + int IndexOfSubNode(SmNode const * pSubNode); + + /** + * Sets the subnode pNode at nIndex. + * If necessary increases the subnodes length. + * @param nIndex + * @param pNode + * @return + */ + void SetSubNode(size_t nIndex, SmNode* pNode); + +private: + /** Sets parent on children of this node */ + void ClaimPaternity(); +}; + + +/** Abstract base class for all visible node + * + * Nodes that doesn't derivate from this class doesn't draw anything, but their + * children. + */ +class SmVisibleNode : public SmNode +{ +protected: + SmVisibleNode(SmNodeType eNodeType, const SmToken &rNodeToken) + : SmNode(eNodeType, rNodeToken) {} + +public: + + /** + * Checks node visibility. + * Returns true if this is an instance of SmVisibleNode's subclass, false otherwise. + * @return node visibility + */ + virtual bool IsVisible() const override; + + /** + * Gets the number of subnodes. + * @return number of subnodes + */ + virtual size_t GetNumSubNodes() const override; + + /** + * Gets the subnode of index nIndex. + * @param nIndex + * @return subnode of index nIndex + */ + using SmNode::GetSubNode; + virtual SmNode * GetSubNode(size_t nIndex) override; +}; + + +class SmGraphicNode : public SmVisibleNode +{ +protected: + SmGraphicNode(SmNodeType eNodeType, const SmToken &rNodeToken) + : SmVisibleNode(eNodeType, rNodeToken) {} + +public: + + /** + * Appends to rText the node text. + * @param rText + * @return + */ + virtual void GetAccessibleText( OUStringBuffer &rText ) const override; +}; + + +/** Draws a rectangle + * + * Used for drawing the line in the OVER and OVERSTRIKE commands. + */ +class SmRectangleNode final : public SmGraphicNode +{ + Size maToSize; + +public: + explicit SmRectangleNode(const SmToken &rNodeToken) + : SmGraphicNode(SmNodeType::Rectangle, rNodeToken) + {} + + //visual stuff TODO comment + virtual void AdaptToX(OutputDevice &rDev, sal_uLong nWidth) override; + virtual void AdaptToY(OutputDevice &rDev, sal_uLong nHeight) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Polygon line node + * + * Used to draw the slash of the WIDESLASH command by SmBinDiagonalNode. + */ +class SmPolyLineNode final : public SmGraphicNode +{ + tools::Polygon maPoly; + Size maToSize; + tools::Long mnWidth; + +public: + explicit SmPolyLineNode(const SmToken &rNodeToken); + + /** + * Gets the width of the rect. + * @return width + */ + tools::Long GetWidth() const { return mnWidth; } + + /** + * Gets the polygon to draw the node. + * @return polygon + */ + tools::Polygon &GetPolygon() { return maPoly; } + + //visual stuff TODO comment + virtual void AdaptToX(OutputDevice &rDev, sal_uLong nWidth) override; + virtual void AdaptToY(OutputDevice &rDev, sal_uLong nHeight) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Text node + * + * @remarks This class also serves as baseclass for all nodes that contains text. + */ +class SmTextNode : public SmVisibleNode +{ + +protected: + OUString maText; + sal_uInt16 mnFontDesc; + /** Index within text where the selection starts + * @remarks Only valid if SmNode::IsSelected() is true + */ + sal_Int32 mnSelectionStart; + /** Index within text where the selection ends + * @remarks Only valid if SmNode::IsSelected() is true + */ + sal_Int32 mnSelectionEnd; + +protected: + SmTextNode(SmNodeType eNodeType, const SmToken &rNodeToken, sal_uInt16 nFontDescP ); + +public: + SmTextNode(const SmToken &rNodeToken, sal_uInt16 nFontDescP ); + + /** + * Returns the font type being used (text, variable, symbol, ...). + * @return font type + */ + sal_uInt16 GetFontDesc() const { return mnFontDesc; } + + /** + * Sets the node text to rText. + * @param rText + * @return + */ + void SetText(const OUString &rText) { maText = rText; } + + /** + * Gets the node text. + * @return node text + */ + const OUString & GetText() const { return maText; } + OUString & GetText() { return maText; } + + /** + * Change the text of this node, including the underlying token to rText. + * @param rText + * @return + */ + void ChangeText(const OUString &rText); + + /** + * Try to guess the correct FontDesc, used during visual editing + * @return + */ + void AdjustFontDesc(); + + /** + * Index within GetText() where the selection starts. + * @remarks Only valid of SmNode::IsSelected() is true. + * @return index. + */ + sal_Int32 GetSelectionStart() const { return mnSelectionStart; } + + /** + * Index within GetText() where the selection ends. + * @remarks Only valid of SmNode::IsSelected() is true. + * @return index. + */ + sal_Int32 GetSelectionEnd() const {return mnSelectionEnd; } + + /** + * Sets the index within GetText() where the selection starts to index. + * @param index + * @return + */ + void SetSelectionStart(sal_Int32 index) {mnSelectionStart = index;} + + /** + * Sets the index within GetText() where the selection ends to index. + * @param index + * @return + */ + void SetSelectionEnd(sal_Int32 index) {mnSelectionEnd = index;} + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Appends to rText the node text. + * @param rText + * @return + */ + virtual void GetAccessibleText( OUStringBuffer &rText ) const override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; + + /** + * Converts the character from StarMath's private area symbols to a matching Unicode + * character, if necessary. To be used when converting GetText() to a normal text. + * @param nIn + * @return unicode char + */ + static sal_Unicode ConvertSymbolToUnicode(sal_Unicode nIn); +}; + + +/** Special node for user defined characters + * + * Node used for pre- and user-defined characters from: + * officecfg/registry/data/org/openoffice/Office/Math.xcu + * + * This is just single characters, I think. + */ +class SmSpecialNode : public SmTextNode +{ + bool mbIsFromGreekSymbolSet; + +protected: + SmSpecialNode(SmNodeType eNodeType, const SmToken &rNodeToken, sal_uInt16 _nFontDesc); + +public: + explicit SmSpecialNode(const SmToken &rNodeToken); + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Glyph node for custom operators + * + * This node is used with commands: oper, uoper and boper. + * E.g. in "A boper op B", "op" will be an instance of SmGlyphSpecialNode. + * "boper" simply interprets "op", the following token, as a binary operator. + * The command "uoper" interprets the following token as unary operator. + * For these commands an instance of SmGlyphSpecialNode is used for the + * operator token, following the command. + */ +class SmGlyphSpecialNode final : public SmSpecialNode +{ +public: + explicit SmGlyphSpecialNode(const SmToken &rNodeToken) + : SmSpecialNode(SmNodeType::GlyphSpecial, rNodeToken, FNT_MATH) + {} + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Math symbol node + * + * Use for math symbols such as plus, minus and integral in the INT command. + */ +class SmMathSymbolNode : public SmSpecialNode +{ +protected: + SmMathSymbolNode(SmNodeType eNodeType, const SmToken &rNodeToken) + : SmSpecialNode(eNodeType, rNodeToken, FNT_MATH) + { + SetText(GetToken().cMathChar); + } + +public: + explicit SmMathSymbolNode(const SmToken &rNodeToken); + + //visual stuff TODO comment + virtual void AdaptToX(OutputDevice &rDev, sal_uLong nWidth) override; + virtual void AdaptToY(OutputDevice &rDev, sal_uLong nHeight) override; + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Math Identifier + * + * This behaves essentially the same as SmMathSymbolNode and is only used to + * represent math symbols that should be exported as <mi> elements rather than + * <mo> elements. + */ +class SmMathIdentifierNode final : public SmMathSymbolNode +{ +public: + explicit SmMathIdentifierNode(const SmToken &rNodeToken) + : SmMathSymbolNode(SmNodeType::MathIdent, rNodeToken) {} +}; + + +/** Root symbol node + * + * Root symbol node used by SmRootNode to create the root symbol, in front of + * the line with the line above. I don't think this node should be used for + * anything else. + */ +class SmRootSymbolNode final : public SmMathSymbolNode +{ + sal_uLong mnBodyWidth; // width of body (argument) of root sign + +public: + explicit SmRootSymbolNode(const SmToken &rNodeToken) + : SmMathSymbolNode(SmNodeType::RootSymbol, rNodeToken) + , mnBodyWidth(0) { } + + /** + * Gets the body width. + * Allows to know how long is the root and paint it. + * @return body width + */ + sal_uLong GetBodyWidth() const {return mnBodyWidth;}; + + //visual stuff TODO comment + virtual void AdaptToX(OutputDevice &rDev, sal_uLong nHeight) override; + virtual void AdaptToY(OutputDevice &rDev, sal_uLong nHeight) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Place node + * + * Used to create the <?> command, that denotes place where something can be + * written. + * It is drawn as a square with a shadow. + */ +class SmPlaceNode final : public SmMathSymbolNode +{ +public: + explicit SmPlaceNode(const SmToken &rNodeToken) + : SmMathSymbolNode(SmNodeType::Place, rNodeToken) { } + SmPlaceNode() : SmMathSymbolNode(SmNodeType::Place, SmToken(TPLACE, MS_PLACE, "<?>")) { }; + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Error node, for parsing errors + * + * This node is used for parsing errors and draws a questionmark turned upside + * down (inverted question mark). + */ +class SmErrorNode final : public SmMathSymbolNode +{ +public: + explicit SmErrorNode(const SmToken &rNodeToken) + : SmMathSymbolNode(SmNodeType::Error, rNodeToken) { SetText(OUString(MS_ERROR)); } + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Table node + * + * This is the root node for the formula tree. This node is also used for the + * STACK and BINOM commands. When used for root node, its + * children are instances of SmLineNode, and in some obscure cases the child + * can be an instance of SmExpressionNode, mainly when errors occur. + */ +class SmTableNode final : public SmStructureNode +{ + tools::Long mnFormulaBaseline; +public: + explicit SmTableNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Table, rNodeToken) + , mnFormulaBaseline(0) { } + + virtual const SmNode * GetLeftMost() const override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Gets the formula baseline. + * @return formula baseline + */ + tools::Long GetFormulaBaseline() const; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** A line + * + * Used as child of SmTableNode when the SmTableNode is the root node of the + * formula tree. + */ +class SmLineNode : public SmStructureNode +{ + bool mbUseExtraSpaces; + +protected: + SmLineNode(SmNodeType eNodeType, const SmToken &rNodeToken) + : SmStructureNode(eNodeType, rNodeToken) + , mbUseExtraSpaces(true) { } + +public: + explicit SmLineNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Line, rNodeToken) + , mbUseExtraSpaces(true) { } + + /** + * Sets if it going to use extra spaces. + * It is used to set if there has to be space between node while rendering. + * By default it is true. + * @param bVal + * @return + */ + void SetUseExtraSpaces(bool bVal) { mbUseExtraSpaces = bVal; } + + /** + * Checks if it is using extra spaces. + * It is used for calculating space between nodes when rendering. + * By default it is true. + * @return is using extra spaces + */ + bool IsUseExtraSpaces() const { return mbUseExtraSpaces; }; + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Expression node + * + * Used whenever you have an expression such as "A OVER {B + C}", here there is + * an expression node that allows "B + C" to be the denominator of the + * SmBinVerNode, that the OVER command creates. + */ +class SmExpressionNode final : public SmLineNode +{ +public: + explicit SmExpressionNode(const SmToken &rNodeToken) + : SmLineNode(SmNodeType::Expression, rNodeToken) { } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Unary horizontal node + * + * The same as SmBinHorNode except this is for unary operators. + */ +class SmUnHorNode final : public SmStructureNode +{ +public: + explicit SmUnHorNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::UnHor, rNodeToken, 2) { } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Root node + * + * Used for create square roots and other roots, example: + * \f$ \sqrt[\mbox{[Argument]}]{\mbox{[Body]}} \f$. + * + * Children:<BR> + * 0: Argument (optional)<BR> + * 1: Symbol (instance of SmRootSymbolNode)<BR> + * 2: Body<BR> + * Where argument is optional and may be NULL. + */ +class SmRootNode final : public SmStructureNode +{ +public: + explicit SmRootNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Root, rNodeToken, 3) { } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; + + /** + * Returns the node containing the data of the order of the root. + * @return order data + */ + const SmNode* Argument() const { return const_cast<SmRootNode *>(this)->Argument(); } + SmNode* Argument() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 0 ); } + + /** + * Returns the node containing the data of the character used for the root. + * @return symbol data + */ + const SmRootSymbolNode* Symbol() const { return const_cast<SmRootNode *>(this)->Symbol(); } + SmRootSymbolNode* Symbol() { assert( GetNumSubNodes() == 3 ); + assert( GetSubNode( 1 )->GetType() + == SmNodeType::RootSymbol ); + return static_cast< SmRootSymbolNode* > + ( GetSubNode( 1 )); } + + /** + * Returns the node containing the data inside the root. + * @return body data + */ + const SmNode* Body() const { return const_cast<SmRootNode *>(this)->Body(); } + SmNode* Body() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 2 ); } + +}; + + +/** Binary horizontal node + * + * This node is used for binary operators. In a formula such as "A + B". + * + * Children:<BR> + * 0: Left operand<BR> + * 1: Binary operator<BR> + * 2: Right operand<BR> + * + * None of the children may be NULL. + */ +class SmBinHorNode final : public SmStructureNode +{ +public: + explicit SmBinHorNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::BinHor, rNodeToken, 3) { } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; + + /** + * Returns the node containing the data of the binary operator. + * @return symbol data + */ + const SmNode* Symbol() const { return const_cast<SmBinHorNode *>(this)->Symbol(); } + SmNode* Symbol() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 1 ); } + + /** + * Returns the node containing the data of the left operand. + * @return left operand data + */ + const SmNode* LeftOperand() const { return const_cast<SmBinHorNode *>(this)->LeftOperand(); } + SmNode* LeftOperand() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 0 ); } + + /** + * Returns the node containing the data of the right operand. + * @return right operand data + */ + const SmNode* RightOperand() const { return const_cast<SmBinHorNode *>(this)->RightOperand(); } + SmNode* RightOperand() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 2 ); } +}; + + +/** Binary horizontal node + * + * This node is used for creating the OVER command, consider the formula: + * "numerator OVER denominator", which looks like + * \f$ \frac{\mbox{numerator}}{\mbox{denominator}} \f$ + * + * Children:<BR> + * 0: Numerator<BR> + * 1: Line (instance of SmRectangleNode)<BR> + * 2: Denominator<BR> + * None of the children may be NULL. + */ +class SmBinVerNode final : public SmStructureNode +{ +public: + explicit SmBinVerNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::BinVer, rNodeToken, 3) { } + + virtual const SmNode * GetLeftMost() const override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Binary diagonal node + * + * Used for implementing the WIDESLASH command, example: "A WIDESLASH B". + * + * Children:<BR> + * 0: Left operand<BR> + * 1: right operand<BR> + * 2: Line (instance of SmPolyLineNode).<BR> + * None of the children may be NULL. + */ +class SmBinDiagonalNode final : public SmStructureNode +{ + bool mbAscending; + + /** + * Returns the position and size of the diagonal line by reference. + * @param rPos + * @param rSize + * @param rDiagPoint + * @param fAngleDeg + * @return position and size of the diagonal line + */ + void GetOperPosSize(Point &rPos, Size &rSize, const Point &rDiagPoint, double fAngleDeg) const; + +public: + explicit SmBinDiagonalNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::BinDiagonal, rNodeToken, 3) + , mbAscending(false) { } + + /** + * Checks if it is of ascending type. + * Ascending: + * / b + * / + * a / + * Descending: + * a \ + * \ + * \ b + * @return ascending. + */ + bool IsAscending() const { return mbAscending; } + + /** + * Sets if the wideslash is ascending to bVal. + * @param bVal + * @return + */ + void SetAscending(bool bVal) { mbAscending = bVal; } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Enum used to index sub-/supscripts in the 'maSubNodes' array + * in 'SmSubSupNode' + * + * See graphic for positions at char: + * + * \code + * CSUP + * + * LSUP H H RSUP + * H H + * HHHH + * H H + * LSUB H H RSUB + * + * CSUB + * \endcode + */ +enum SmSubSup +{ CSUB, CSUP, RSUB, RSUP, LSUB, LSUP +}; + +/** numbers of entries in the above enum (that is: the number of possible + * sub-/supscripts) + */ +#define SUBSUP_NUM_ENTRIES 6 + +/** Super- and subscript node + * + * Used for creating super- and subscripts for commands such as: + * "^", "_", "lsup", "lsub", "csup" and "csub". + * Example: "A^2" which looks like: \f$ A^2 \f$ + * + * This node is also used for creating limits on SmOperNode, when + * "FROM" and "TO" commands are used with "INT", "SUM" or similar. + * + * Children of this node can be enumerated using the SmSubSup enum. + * Please note that children may be NULL, except for the body. + * It is recommended that you access children using GetBody() and + * GetSubSup(). + */ +class SmSubSupNode final : public SmStructureNode +{ + bool mbUseLimits; + +public: + explicit SmSubSupNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::SubSup, rNodeToken, 1 + SUBSUP_NUM_ENTRIES) + , mbUseLimits(false) { } + + /** + * Returns the node with the data of what has to be superindex or subindex. + * @return body data + */ + const SmNode * GetBody() const { return const_cast<SmSubSupNode *>(this)->GetBody(); } + SmNode * GetBody() { return GetSubNode(0); } + + /** + * Checks if it is going to be used for a limit. + * Example lim from { x toward 0 } { {sin x}over x } = 1 + * @return is a limit + */ + bool IsUseLimits() const { return mbUseLimits; }; + + /** + * Sets if it is going to be used for a limit to bVal. + * @param bVal + * @return + */ + void SetUseLimits(bool bVal) { mbUseLimits = bVal; } + + /** + * Gets the node with the data of what has to be superindex or subindex. + * The position to check is given by eSubSup. + * @remarks this method may return NULL. + * @param eSubSup + * @return body data + */ + const SmNode * GetSubSup(SmSubSup eSubSup) const { return const_cast< SmSubSupNode* > + ( this )->GetSubSup( eSubSup ); } + SmNode * GetSubSup(SmSubSup eSubSup) { return GetSubNode(1 + eSubSup); }; + + /** + * Sets the node with the data of what has to be superindex or subindex. + * @param pScript + */ + void SetBody(SmNode* pBody) { SetSubNode(0, pBody); } + + /** + * Sets the node with the data of what has to be superindex or subindex. + * The position to check is given by eSubSup. + * @param eSubSup + * @param pScript + */ + void SetSubSup(SmSubSup eSubSup, SmNode* pScript) { SetSubNode( 1 + eSubSup, pScript); } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; + +}; + + +/** Node for brace construction + * + * Used for "lbrace [body] rbrace" and similar constructions. + * Should look like \f$ \{\mbox{[body]}\} \f$ + * + * Children:<BR> + * 0: Opening brace<BR> + * 1: Body (usually SmBracebodyNode)<BR> + * 2: Closing brace<BR> + * None of the children can be NULL. + * + * Note that child 1 (Body) is usually SmBracebodyNode, but it can also be e.g. SmExpressionNode. + */ +class SmBraceNode final : public SmStructureNode +{ +public: + explicit SmBraceNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Brace, rNodeToken, 3) { } + + /** + * Returns the node containing the data of the opening brace. + * @return opening brace data + */ + const SmMathSymbolNode* OpeningBrace() const { return const_cast<SmBraceNode *> + (this)->OpeningBrace(); } + SmMathSymbolNode* OpeningBrace() { assert( GetNumSubNodes() == 3 ); + assert( GetSubNode( 0 )->GetType() + == SmNodeType::Math ); + return static_cast< SmMathSymbolNode* > + ( GetSubNode( 0 )); } + + /** + * Returns the node containing the data of what is between braces. + * @return body data + */ + const SmNode* Body() const { return const_cast<SmBraceNode *>(this)->Body(); } + SmNode* Body() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 1 ); } + + /** + * Returns the node containing the data of the closing brace. + * @return closing brace data + */ + const SmMathSymbolNode* ClosingBrace() const { return const_cast<SmBraceNode *> + (this)->ClosingBrace(); } + SmMathSymbolNode* ClosingBrace() { assert( GetNumSubNodes() == 3 ); + assert( GetSubNode( 2 )->GetType() + == SmNodeType::Math ); + return static_cast< SmMathSymbolNode* > + ( GetSubNode( 2 )); } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Body of an SmBraceNode + * + * This usually only has one child an SmExpressionNode, however, it can also + * have other children. + * Consider the formula "lbrace [body1] mline [body2] rbrace", looks like: + * \f$ \{\mbox{[body1] | [body2]}\} \f$. + * In this case SmBracebodyNode will have three children, "[body1]", "|" and + * [body2]. + */ +class SmBracebodyNode final : public SmStructureNode +{ + tools::Long mnBodyHeight; + +public: + explicit SmBracebodyNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Bracebody, rNodeToken) + , mnBodyHeight(0) { } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + tools::Long GetBodyHeight() const { return mnBodyHeight; } + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Node for vertical brace construction + * + * Used to implement commands "[body] underbrace [script]" and + * "[body] overbrace [script]". + * Underbrace should look like this \f$ \underbrace{\mbox{body}}_{\mbox{script}}\f$. + * + * Children:<BR> + * 0: body<BR> + * 1: brace<BR> + * 2: script<BR> + * (None of these children are optional, e.g. they must all be not NULL). + */ +class SmVerticalBraceNode final : public SmStructureNode +{ +public: + explicit SmVerticalBraceNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::VerticalBrace, rNodeToken, 3) { } + + /** + * Returns the node containing the data of what the brace is pointing for. + * body { script } + * @return body data + */ + const SmNode* Body() const { return const_cast<SmVerticalBraceNode *>(this)->Body(); } + SmNode* Body() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 0 ); } + + /** + * Returns the node containing the data of the brace. + * @return brace data + */ + const SmMathSymbolNode* Brace() const { return const_cast<SmVerticalBraceNode *> + (this)->Brace(); } + SmMathSymbolNode* Brace() { assert( GetNumSubNodes() == 3 ); + assert( GetSubNode( 1 )->GetType() + == SmNodeType::Math ); + return static_cast< SmMathSymbolNode* > + ( GetSubNode( 1 )); } + + /** + * Returns the node containing the data of what is in the brace. + * body { script } + * @return opening brace data + */ + const SmNode* Script() const { return const_cast<SmVerticalBraceNode *>(this)->Script(); } + SmNode* Script() { assert( GetNumSubNodes() == 3 ); return GetSubNode( 2 ); } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + +/** Operation Node + * + * Used for commands like SUM, INT and similar. + * + * Children:<BR> + * 0: Operation (instance of SmMathSymbolNode or SmSubSupNode)<BR> + * 1: Body<BR> + * None of the children may be NULL. + * + */ +class SmOperNode final : public SmStructureNode +{ +public: + explicit SmOperNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Oper, rNodeToken, 2) { } + + /** + * Returns the node with the operator data + * @return operator data + */ + const SmNode * GetSymbol() const { return const_cast<SmOperNode *>(this)->GetSymbol(); } + SmNode * GetSymbol(); + + /** + * Returns the height of the node in base to the symbol + * ( rSymbol contains the operator data ) + * and the font format ( rFormat ). + * @param rSymbol + * @param rFormat + * @return node's height + */ + tools::Long CalcSymbolHeight(const SmNode &rSymbol, const SmFormat &rFormat) const; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Node used for alignment + * + * This node has exactly one child at index 0. + */ +class SmAlignNode final : public SmStructureNode +{ +public: + explicit SmAlignNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Align, rNodeToken) { } + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Attribute node + * + * Used to give an attribute to another node. Used for commands such as: + * UNDERLINE, OVERLINE, OVERSTRIKE, WIDEVEC, WIDEHARPOON, WIDEHAT and WIDETILDE. + * + * Children:<BR> + * 0: Attribute<BR> + * 1: Body<BR> + * None of these may be NULL. + */ +class SmAttributeNode final : public SmStructureNode +{ +public: + explicit SmAttributeNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Attribute, rNodeToken, 2) {} + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; + + /** + * Gets the attribute data. + * @return attribute data + */ + const SmNode* Attribute() const { return const_cast<SmAttributeNode *>(this)->Attribute(); } + SmNode* Attribute() { assert( GetNumSubNodes() == 2 ); return GetSubNode( 0 ); } + + /** + * Gets the body data ( the nodes affected by the attribute ). + * @return body data + */ + const SmNode* Body() const { return const_cast<SmAttributeNode *>(this)->Body(); } + SmNode* Body() { assert( GetNumSubNodes() == 2 ); return GetSubNode( 1 ); } +}; + + +/** Font node + * + * Used to change the font of its children. + */ +class SmFontNode final : public SmStructureNode +{ + FontSizeType meSizeType; + Fraction maFontSize; + +public: + explicit SmFontNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Font, rNodeToken) + , meSizeType(FontSizeType::MULTIPLY) + , maFontSize(1) { } + + /** + * Sets font size to rValue in nType mode. + * Check FontSizeType for details. + * @param rValue + * @param nType + * @return + */ + void SetSizeParameter(const Fraction &rValue, FontSizeType nType) + { meSizeType = nType; maFontSize = rValue; } + + /** + * Returns the font size. + * @return font size. + */ + const Fraction & GetSizeParameter() const {return maFontSize;} + + /** + * Returns the font size type. + * Check FontSizeType for details. + * @return font size type. + */ + FontSizeType GetSizeType() const {return meSizeType;} + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Matrix node + * + * Used to implement the MATRIX command, example: + * "matrix{ 1 # 2 ## 3 # 4}". + */ +class SmMatrixNode final : public SmStructureNode +{ + sal_uInt16 mnNumRows, + mnNumCols; + +public: + explicit SmMatrixNode(const SmToken &rNodeToken) + : SmStructureNode(SmNodeType::Matrix, rNodeToken) + , mnNumRows(0) + , mnNumCols(0) { } + + /** + * Gets the number of rows of the matrix. + * @return rows number + */ + sal_uInt16 GetNumRows() const {return mnNumRows;} + + /** + * Gets the number of columns of the matrix. + * @return columns number + */ + sal_uInt16 GetNumCols() const {return mnNumCols;} + + /** + * Sets the dimensions of the matrix. + * @param nMatrixRows + * @param nMatrixCols + * @return + */ + void SetRowCol(sal_uInt16 nMatrixRows, sal_uInt16 nMatrixCols) + { mnNumRows = nMatrixRows; mnNumCols = nMatrixCols; } + + virtual const SmNode * GetLeftMost() const override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; +}; + + +/** Node for whitespace + * + * Used to implement the commands "~" and "`". This node is just a blank space. + */ +class SmBlankNode final : public SmGraphicNode +{ + sal_uInt16 mnNum; + +public: + explicit SmBlankNode(const SmToken &rNodeToken) + : SmGraphicNode(SmNodeType::Blank, rNodeToken) + , mnNum(0) { } + + void IncreaseBy(const SmToken &rToken, sal_uInt32 nMultiplyBy = 1); + void Clear() { mnNum = 0; } + sal_uInt16 GetBlankNum() const { return mnNum; } + void SetBlankNum(sal_uInt16 nNumber) { mnNum = nNumber; } + + /** + * Prepare preliminary settings about font and text + * (e.g. maFace, meRectHorAlign, mnFlags, mnAttributes, etc.) + * @param rFormat + * @param rDocShell + * @param nDepth + * @return + */ + virtual void Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell, + int nDepth) override; + + /** + * Prepares the SmRect to render. + * @param rDev + * @param rFormat + * @return + */ + virtual void Arrange(OutputDevice &rDev, const SmFormat &rFormat) override; + + /** + * Accept a visitor. + * Calls the method for this class on the visitor. + * @param pVisitor + * @return + */ + void Accept(SmVisitor* pVisitor) override; + +}; + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |