// -*- C++ -*- /* * File: math_inset.h * Purpose: Declaration of insets for mathed * Author: Alejandro Aguilar Sierra * Created: January 1996 * Description: Math paragraph and objects for a WYSIWYG math editor. * * Dependencies: Xlib, XForms * * Copyright: 1996, 1997 Alejandro Aguilar Sierra * * Version: 0.8beta, Math & Lyx project. * * You are free to use and modify this code under the terms of * the GNU General Public Licence version 2 or later. */ // Note: These math insets are internal to Math and are not derived // from lyx inset. #ifndef MATH_INSET_H #define MATH_INSET_H #include #ifdef __GNUG__ #pragma interface #endif #include "math_xdata.h" #include "math_defs.h" /** Abstract base class for all math objects. A math insets is for use of the math editor only, it isn't a general LyX inset. It's used to represent all the math objects. The formulaInset (a LyX inset) encapsulates a math inset. */ class MathArrayInset; class MathBoxInset; class MathCharInset; class MathDelimInset; class MathFuncInset; class MathGridInset; class MathFracInset; class MathHullInset; class MathMatrixInset; class MathNestInset; class MathScriptInset; class MathStringInset; class MathSpaceInset; class MathSymbolInset; class NormalStream; class OctaveStream; class MapleStream; class MathMLStream; class WriteStream; class MathArray; class LaTeXFeatures; class BufferView; class UpdatableInset; class MathMacroTemplate; class MathInset { public: /// short of anything else reasonable typedef MathArray::size_type size_type; /// type for cursor positions within a cell typedef MathArray::size_type pos_type; /// type for cell indices typedef size_type idx_type; /// type for row numbers typedef size_type row_type; /// type for column numbers typedef size_type col_type; /// MathInset(); /// the virtual base destructor virtual ~MathInset(); /// draw the object virtual void draw(Painter &, int x, int y) const; /// write LaTeX and Lyx code virtual void write(WriteStream & os) const; /// reproduce itself virtual MathInset * clone() const = 0; ///substitutes macro arguments if necessary virtual void substitute(MathMacro const & macro); /// compute the size of the object, sets ascend_, descend_ and width_ virtual void metrics(MathMetricsInfo const & st) const; /// virtual int ascent() const { return 1; } /// virtual int descent() const { return 1; } /// virtual int width() const { return 2; } /// virtual int height() const; /// Where should we go when we press the up cursor key? virtual bool idxUp(idx_type & idx, pos_type & pos) const; /// The down key virtual bool idxDown(idx_type & idx, pos_type & pos) const; /// The left key virtual bool idxLeft(idx_type & idx, pos_type & pos) const; /// The right key virtual bool idxRight(idx_type & idx, pos_type & pos) const; /// Move one physical cell up virtual bool idxNext(idx_type & idx, pos_type & pos) const; /// Move one physical cell down virtual bool idxPrev(idx_type & idx, pos_type & pos) const; /// Target pos when we enter the inset from the left by pressing "Right" virtual bool idxFirst(idx_type & idx, pos_type & pos) const; /// Target pos when we enter the inset from the right by pressing "Left" virtual bool idxLast(idx_type & idx, pos_type & pos) const; /// Where should we go if we press home? virtual bool idxHome(idx_type & idx, pos_type & pos) const; /// Where should we go if we press end? virtual bool idxEnd(idx_type & idx, pos_type & pos) const; /// Delete a cell and move cursor // the return value indicates whether the cursor should leave the inset // and/or the whole inset should be deleted virtual void idxDelete(idx_type & idx, bool & popit, bool & deleteit); // deletes a cell range and moves the cursor virtual void idxDeleteRange(idx_type from, idx_type to); // returns list of cell indices that are "between" from and to for // selection purposes virtual std::vector idxBetween(idx_type from, idx_type to) const; /// virtual idx_type nargs() const; /// virtual MathArray & cell(idx_type); /// virtual MathArray const & cell(idx_type) const; /// virtual MathXArray & xcell(idx_type); /// virtual MathXArray const & xcell(idx_type) const; /// virtual col_type ncols() const { return 1; } /// virtual row_type nrows() const { return 1; } /// virtual col_type col(row_type) const { return 0; } /// virtual row_type row(row_type) const { return 0; } /// virtual int cellXOffset(row_type) const { return 0; } /// virtual int cellYOffset(row_type) const { return 0; } /// virtual void addRow(row_type) {} /// virtual void delRow(row_type) {} /// virtual void addCol(col_type) {} /// virtual void delCol(col_type) {} /// virtual bool covers(int x, int y) const; /// identifies certain types of insets virtual MathArrayInset * asArrayInset() { return 0; } virtual MathBoxInset * asBoxInset() { return 0; } virtual MathCharInset const * asCharInset() const { return 0; } virtual MathDelimInset * asDelimInset() { return 0; } virtual MathDelimInset const * asDelimInset() const { return 0; } virtual MathFuncInset * asFuncInset() { return 0; } virtual MathFracInset * asFracInset() { return 0; } virtual MathGridInset * asGridInset() { return 0; } virtual MathHullInset * asHullInset() { return 0; } virtual MathHullInset const * asHullInset() const { return 0; } virtual MathMacroTemplate * asMacroTemplate() { return 0; } virtual MathMatrixInset const * asMatrixInset() const { return 0; } virtual MathNestInset * asNestInset() { return 0; } virtual MathScriptInset * asScriptInset() { return 0; } virtual MathScriptInset const * asScriptInset() const { return 0; } virtual MathSpaceInset * asSpaceInset() { return 0; } virtual MathStringInset * asStringInset() { return 0; } virtual MathSymbolInset * asSymbolInset() { return 0; } virtual UpdatableInset * asHyperActiveInset() const { return 0; } /// identifies things that can get scripts virtual bool isScriptable() const { return false; } /// thing that can be moved into virtual bool isActive() const { return nargs() > 0; } /// identifies insets from the outer world virtual bool isHyperActive() const { return 0; } /// virtual bool isRelOp() const { return false; } /// virtual bool isMacro() const { return false; } /// virtual char getChar() const { return 0; } /// virtual MathTextCodes code() const { return LM_TC_MIN; } /// identifies things that can get \limits or \nolimits virtual bool takesLimits() const { return false; } /// virtual void dump() const; /// virtual void edit(BufferView *, int, int, unsigned int) {} /// virtual void validate(LaTeXFeatures & features) const; /// virtual void handleFont(MathTextCodes) {} /// write normalized content virtual void normalize(NormalStream &) const; /// virtual void maplize(MapleStream &) const; /// virtual void mathmlize(MathMLStream &) const; /// virtual void octavize(OctaveStream &) const; }; std::ostream & operator<<(std::ostream &, MathInset const &); #endif