// -*- C++ -*-
/*
* File: math_inset.h
- * Purpose: Declaration of insets for mathed
- * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
+ * Purpose: Declaration of insets for mathed
+ * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
* Created: January 1996
* Description: Math paragraph and objects for a WYSIWYG math editor.
*
*
* Copyright: 1996, 1997 Alejandro Aguilar Sierra
*
- * Version: 0.8beta, Mathed & Lyx project.
+ * 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 Mathed and are not derived
+// Note: These math insets are internal to Math and are not derived
// from lyx inset.
-#ifndef MATH_INSET
-#define MATH_INSET
+#ifndef MATH_INSET_H
+#define MATH_INSET_H
+
+#include <config.h>
#ifdef __GNUG__
#pragma interface
#endif
+#include "math_xdata.h"
#include "math_defs.h"
-#include "symbol_def.h"
-#include "LString.h"
/**
- Functions or LaTeX names for objects that I don't know how to draw.
- */
-class MathFuncInset: public MathedInset {
-public:
- ///
- explicit
- MathFuncInset(char const * nm,
- short ot = LM_OT_FUNC, short st = LM_ST_TEXT);
- ///
- ~MathFuncInset();
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
- ///
- inline bool GetLimits() const;
-protected:
- ///
- int ln;
- ///
- bool lims;
- ///
- char * fname;
-};
-
-
-/// Accents
-class MathAccentInset: public MathedInset {
-public:
- ///
- MathAccentInset(byte, MathedTextCodes, int, short st = LM_ST_TEXT);
- ///
- MathAccentInset(MathedInset *, int, short st = LM_ST_TEXT);
- ///
- ~MathAccentInset();
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
- ///
- int getAccentCode() const { return code; }
-
-protected:
- ///
- byte c;
- ///
- MathedTextCodes fn;
- ///
- int code;
- ///
- MathedInset * inset;
- ///
- int dh, dy;
-};
-
-
-///
-class MathDotsInset: public MathedInset {
-public:
- ///
- MathDotsInset(char const *, int, short st = LM_ST_TEXT);
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
-protected:
- ///
- int dh, code;
-};
-
-
-/// Smart spaces
-class MathSpaceInset: public MathedInset {
-public:
- ///
- MathSpaceInset(int sp, short ot = LM_OT_SPACE, short st = LM_ST_TEXT);
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- inline void Metrics();
- ///
- inline void SetSpace(int sp);
- ///
- int GetSpace() { return space; }
-protected:
- ///
- int space;
-};
-
-/// big operators
-class MathBigopInset: public MathedInset {
+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.
+
+Math insets do not know there parents, a cursor position or things
+like that. The are dumb object that are contained in other math insets
+(mathNestInsets, in fact) thus forming a tree. The root of this tree is
+always a mathHullInset, which provides an interface to the Outer World by
+inclusion in the "real LyX insets" FormulaInset and FormulaMacroInset.
+
+*/
+
+
+class MathArrayInset;
+class MathBraceInset;
+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 MathUnknownInset;
+class MathXYMatrixInset;
+
+class NormalStream;
+class OctaveStream;
+class MapleStream;
+class MathMLStream;
+class WriteStream;
+class InfoStream;
+class MathArray;
+
+class LaTeXFeatures;
+class BufferView;
+class UpdatableInset;
+class MathMacroTemplate;
+class MathPosFinder;
+
+
+class MathInset {
public:
- ///
- MathBigopInset(char const *, int, short st = LM_ST_TEXT);
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
- ///
- inline bool GetLimits() const;
- ///
- inline void SetLimits(bool);
-protected:
- ///
- int lims;
- ///
- int sym;
+ /// short of anything else reasonable
+ typedef MathArray::size_type size_type;
+ /// type for cursor positions differences within a cell
+ typedef MathArray::difference_type difference_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;
+
+ /// our members behave nicely...
+ MathInset() {}
+ /// the virtual base destructor
+ virtual ~MathInset() {}
+
+ /// 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_
+ // updates the (xo,yo)-caches of all contained cells
+ virtual void metrics(MathMetricsInfo const & st) const;
+ /// draw the object
+ virtual void draw(Painter &, int x, int y) const;
+ /// the ascent of the inset above the baseline
+ /// compute the size of the object for text based drawing
+ virtual void metricsT(TextMetricsInfo const & st) const;
+ /// draw the object as text
+ virtual void drawT(TextPainter &, int x, int y) const;
+ /// the ascent of the inset above the baseline
+ virtual int ascent() const { return 1; }
+ /// the descent of the inset below the baseline
+ virtual int descent() const { return 1; }
+ /// total width
+ virtual int width() const { return 2; }
+ /// total height (== ascent + descent)
+ virtual int height() const;
+
+ /// Where should we go when we press the up or down cursor key?
+ virtual bool idxUpDown(idx_type & idx, bool up) 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
+ virtual bool idxDelete(idx_type &) { return false; }
+ /// pulls cell after pressing erase
+ virtual void idxGlue(idx_type) {}
+ // returns list of cell indices that are "between" from and to for
+ // selection purposes
+ virtual std::vector<idx_type> idxBetween(idx_type from, idx_type to) const;
+
+ /// the number of nested cells this inset owns
+ virtual idx_type nargs() const;
+
+ /// return cell given its number
+ virtual MathArray & cell(idx_type);
+ /// return cell given its number
+ virtual MathArray const & cell(idx_type) const;
+ /// return cell plus drawing cache given its number
+ virtual MathXArray & xcell(idx_type);
+ /// return cell plus drawing cache given its number
+ virtual MathXArray const & xcell(idx_type) const;
+
+ /// the number of columns of this inset if it is grid-like
+ virtual col_type ncols() const { return 1; }
+ /// the number of rows of this inset if it is grid-like
+ virtual row_type nrows() const { return 1; }
+ /// to which column belongs a cell with a given index?
+ virtual col_type col(idx_type) const { return 0; }
+ /// to which row belongs a cell with a given index?
+ virtual row_type row(idx_type) const { return 0; }
+ /// cell idex corresponding to row and column;
+ virtual idx_type index(row_type row, col_type col) const;
+ /// any additional x-offset when drawing a cell?
+ virtual int cellXOffset(idx_type) const { return 0; }
+ /// any additional y-offset when drawing a cell?
+ virtual int cellYOffset(idx_type) const { return 0; }
+ /// can we enter this cell?
+ virtual bool validCell(idx_type) const { return true; }
+
+ /// identifies certain types of insets
+ virtual MathArrayInset * asArrayInset() { return 0; }
+ virtual MathBraceInset * asBraceInset() { return 0; }
+ virtual MathBoxInset * asBoxInset() { return 0; }
+ virtual MathBoxInset const * asBoxInset() const { 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 const * asSymbolInset() const { return 0; }
+ virtual MathUnknownInset const * asUnknownInset() const { return 0; }
+ virtual MathXYMatrixInset const* asXYMatrixInset() const{ 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; }
+ /// is the a relational operator (used for splitting equations)
+ virtual bool isRelOp() const { return false; }
+
+ /// return the content as char if the inset is able to do so
+ virtual char getChar() const { return 0; }
+ /// return the content's char code if it has one
+ virtual MathTextCodes code() const { return LM_TC_MIN; }
+ /// identifies things that can get \limits or \nolimits
+ virtual bool takesLimits() const { return false; }
+ /// identifies complicated things that need braces if used as arg
+ virtual bool needsBraces() const { return true; }
+
+ ///
+ virtual void edit(BufferView *, int, int, unsigned int) {}
+
+ /// request "external features"
+ virtual void validate(LaTeXFeatures & features) const;
+ /// char char code if possible
+ virtual void handleFont(MathTextCodes) {}
+ /// is this inset equal to a given other inset?
+ virtual bool match(MathInset *) const { return false; }
+ /// replace things by other things
+ virtual void replace(ReplaceData &) {}
+ /// do we contain a given subsequence?
+ virtual bool contains(MathArray const &) { return false; }
+
+ /// write LaTeX and Lyx code
+ virtual void write(WriteStream & os) const;
+ /// write normalized content
+ virtual void normalize(NormalStream &) const;
+ /// write content as something readable by Maple
+ virtual void maplize(MapleStream &) const;
+ /// write content as something resembling MathML
+ virtual void mathmlize(MathMLStream &) const;
+ /// write content as something readable by Octave
+ virtual void octavize(OctaveStream &) const;
+ /// describe content
+ virtual void infoize(std::ostream &) const {}
+
+ /// dump content to stderr for debugging
+ virtual void dump() const;
};
-
-//------- All editable insets must be derived from MathParInset.
-
-///
-class MathSqrtInset: public MathParInset {
-public:
- ///
- MathSqrtInset(short st = LM_ST_TEXT);
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int x, int baseline);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
- ///
- bool Inside(int, int);
-private:
- ///
- int hmax, wbody;
-};
-
-
-/// Fraction like objects (frac, stackrel, binom)
-class MathFracInset: public MathParInset {
-public:
- ///
- MathFracInset(short ot = LM_OT_FRAC);
- ///
- ~MathFracInset();
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int x, int baseline);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
-
- /** This does the same that SetData(LyxArrayBase*) but for both
- numerator and denominator at once.
- */
- void SetData(LyxArrayBase *, LyxArrayBase *);
- ///
- void SetData(LyxArrayBase *);
- ///
- void GetXY(int & x, int & y) const;
- ///
- void SetFocus(int, int);
- ///
- bool Inside(int, int);
- ///
- LyxArrayBase * GetData();
- ///
- bool setArgumentIdx(int i); // was bool Up/down(void);
- ///
- int getArgumentIdx() { return int(idx); }
- ///
- int getMaxArgumentIdx() { return 1; }
- ///
- void SetStyle(short);
-protected:
- ///
- short idx;
- ///
- MathParInset * den;
- ///
- int w0, w1, des0, dh;
-};
-
-
-/// A delimiter
-class MathDelimInset: public MathParInset {
-public:
- ///
- MathDelimInset(int, int, short st = LM_ST_TEXT);
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
-protected:
- ///
- int left, right;
- ///
- int dw, dh;
-};
-
-
-/// Decorations over (below) a math object
-class MathDecorationInset: public MathParInset {
-public:
- ///
- MathDecorationInset(int, short st = LM_ST_TEXT);
- ///
- MathedInset * Clone();
- ///
- void draw(Painter &, int, int);
- ///
- void Write(std::ostream &);
- ///
- void Metrics();
- ///
- inline bool GetLimits() const;
-protected:
- ///
- int deco;
- ///
- bool upper;
- ///
- int dw, dh, dy;
-};
-
-
-// -------------------- Inline functions ---------------------
-
-
-inline
-MathFuncInset::~MathFuncInset()
-{
- if (fname && GetType() == LM_OT_UNDEF) delete[] fname;
-}
-
-
-inline
-bool MathFuncInset::GetLimits() const
-{
- return bool(lims && (GetStyle() == LM_ST_DISPLAY));
-}
-
-
-inline
-void MathFuncInset::Write(std::ostream & os)
-{
- os << "\\" << name << ' ';
-}
-
-
-inline
-void MathSpaceInset::Metrics()
-{
- width = space ? space * 2 : 2;
- if (space > 3) width *= 2;
- if (space == 5) width *= 2;
- width += 4;
- ascent = 4; descent = 0;
-}
-
-
-inline
-void MathSpaceInset::SetSpace(int sp)
-{
- space = sp;
- Metrics();
-}
-
-
-inline
-bool MathBigopInset::GetLimits() const
-{
- // Default case
- if (lims < 0) {
- return sym != LM_int && sym != LM_oint && GetStyle() == LM_ST_DISPLAY;
- }
-
- // Custom
- return lims > 0;
-}
-
-
-inline
-void MathBigopInset::SetLimits(bool ls)
-{
- lims = ls ? 1 : 0;
-}
-
-
-inline
-bool MathDecorationInset::GetLimits() const
-{
- return deco == LM_underbrace || deco == LM_overbrace;
-}
+std::ostream & operator<<(std::ostream &, MathInset const &);
#endif
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