*
* 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 "LString.h"
-#include "symbol_def.h"
+#include "math_xdata.h"
+#include "math_defs.h"
-class Painter;
+/**
-/** 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 MathedInset {
- public:
- /// A math inset has a name (usually its LaTeX name), type and font-size
- MathedInset(string const & nm, short ot, short st);
- ///
- explicit
- MathedInset(MathedInset *);
- ///
- virtual ~MathedInset() {}
- /// Draw the object
- virtual void draw(Painter &, int x, int baseline) = 0;
- /// Write LaTeX and Lyx code
- virtual void Write(std::ostream &, bool fragile) = 0;
- /// Reproduces itself
- virtual MathedInset * Clone() = 0;
- /// Compute the size of the object
- virtual void Metrics() = 0;
- ///
- virtual int Ascent() const { return ascent; }
- ///
- virtual int Descent() const { return descent; }
- ///
- virtual int Width() const { return width; }
- ///
- virtual int Height() const { return ascent + descent; }
- ///
- virtual bool GetLimits() const { return false; }
- ///
- virtual void SetLimits(bool) {}
- ///
- string const & GetName() const { return name; }
- ///
- short GetType() const { return objtype; }
- ///
- short GetStyle() const { return size; }
- //Man: Avoid to use these functions if it's not strictly necessary
- ///
- virtual void SetType(short t) { objtype = t; }
- ///
- virtual void SetStyle(short st) { size = st; } // Metrics();
- ///
- virtual void SetName(string const & n) { name = n; }
- ///
- static int workWidth;
- protected:
- ///
- string name;
- ///
- short objtype;
- ///
- int width;
- ///
- int ascent;
- ///
- int descent;
- ///
- short size;
- /// Default metrics
- static int df_asc;
- ///
- static int df_des;
- ///
- static int df_width;
- /// In a near future maybe we use a better fonts renderer than X
- void drawStr(Painter &, short, int, int, int, string const &);
- ///
- friend class MathedCursor;
- ///
- friend void mathed_init_fonts();
+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 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 MathPosFinder;
+
+
+class MathInset {
+public:
+ /// 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() {}
+
+ /// 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_
+ // updates the (xo,yo)-caches of all contained cells
+ virtual void metrics(MathMetricsInfo const & st) 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 cursor key?
+ virtual bool idxUp(idx_type & idx) const;
+ /// The down key
+ virtual bool idxDown(idx_type & idx) 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<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; }
+
+ /// identifies certain types of insets
+ virtual MathArrayInset * asArrayInset() { 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 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; }
+
+ ///
+ 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 &) {}
+
+ /// 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;
+
+ /// dump content to stderr for debugging
+ virtual void dump() const;
};
+
+std::ostream & operator<<(std::ostream &, MathInset const &);
+
#endif
projects / lyx.git / blobdiff