4 * Purpose: Declaration of insets for mathed
5 * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
6 * Created: January 1996
7 * Description: Math paragraph and objects for a WYSIWYG math editor.
9 * Dependencies: Xlib, XForms
11 * Copyright: 1996, 1997 Alejandro Aguilar Sierra
13 * Version: 0.8beta, Math & Lyx project.
15 * You are free to use and modify this code under the terms of
16 * the GNU General Public Licence version 2 or later.
25 #include "insets/insetbase.h"
29 Abstract base class for all math objects. A math insets is for use of the
30 math editor only, it isn't a general LyX inset. It's used to represent all
33 Math insets do not know there parents, a cursor position or things
34 like that. The are dumb object that are contained in other math insets
35 (MathNestInsets, in fact) thus forming a tree. The root of this tree is
36 always a MathHullInset, which provides an interface to the Outer World by
37 inclusion in the "real LyX insets" FormulaInset and FormulaMacroInset.
43 class MathAMSArrayInset;
50 class MathMatrixInset;
52 class MathParboxInset;
53 class MathScriptInset;
54 class MathStringInset;
56 class MathSymbolInset;
57 class MathUnknownInset;
68 class MathematicaStream;
76 class MathMacroTemplate;
82 class TextMetricsInfo;
86 class MathInset : public InsetBase {
88 /// our members behave nicely...
92 virtual MathInset * clone() const = 0;
93 /// substitutes macro arguments if necessary
94 virtual void substitute(MathMacro const & macro);
95 /// draw selection between two positions
96 virtual void drawSelection(PainterInfo & pi,
97 idx_type idx1, pos_type pos1, idx_type idx2, pos_type pos2) const;
98 /// the ascent of the inset above the baseline
99 /// compute the size of the object for text based drawing
100 virtual void metricsT(TextMetricsInfo const & mi, Dimension & dim) const;
101 /// draw the object as text
102 virtual void drawT(TextPainter &, int x, int y) const;
104 /// Where should we go when we press the up or down cursor key?
105 virtual bool idxUpDown(idx_type & idx, pos_type & pos, bool up,
107 /// Where should we go when we press the up or down cursor key?
108 virtual bool idxUpDown2(idx_type & idx, pos_type & pos, bool up,
111 virtual bool idxLeft(idx_type & idx, pos_type & pos) const;
113 virtual bool idxRight(idx_type & idx, pos_type & pos) const;
115 /// Move one physical cell up
116 virtual bool idxNext(idx_type & idx, pos_type & pos) const;
117 /// Move one physical cell down
118 virtual bool idxPrev(idx_type & idx, pos_type & pos) const;
120 /// Target pos when we enter the inset from the left by pressing "Right"
121 virtual bool idxFirst(idx_type & idx, pos_type & pos) const;
122 /// Target pos when we enter the inset from the right by pressing "Left"
123 virtual bool idxLast(idx_type & idx, pos_type & pos) const;
125 /// Where should we go if we press home?
126 virtual bool idxHome(idx_type & idx, pos_type & pos) const;
127 /// Where should we go if we press end?
128 virtual bool idxEnd(idx_type & idx, pos_type & pos) const;
130 /// Delete a cell and move cursor
131 virtual bool idxDelete(idx_type &) { return false; }
132 /// pulls cell after pressing erase
133 virtual void idxGlue(idx_type) {}
134 // returns list of cell indices that are "between" from and to for
135 // selection purposes
136 virtual bool idxBetween(idx_type idx, idx_type from, idx_type to) const;
138 /// the number of nested cells this inset owns
139 virtual idx_type nargs() const;
141 /// return cell given its number
142 virtual MathArray & cell(idx_type);
143 /// return cell given its number
144 virtual MathArray const & cell(idx_type) const;
146 /// the number of columns of this inset if it is grid-like
147 virtual col_type ncols() const { return 1; }
148 /// the number of rows of this inset if it is grid-like
149 virtual row_type nrows() const { return 1; }
150 /// to which column belongs a cell with a given index?
151 virtual col_type col(idx_type) const { return 0; }
152 /// to which row belongs a cell with a given index?
153 virtual row_type row(idx_type) const { return 0; }
154 /// cell idex corresponding to row and column;
155 virtual idx_type index(row_type row, col_type col) const;
156 /// any additional x-offset when drawing a cell?
157 virtual int cellXOffset(idx_type) const { return 0; }
158 /// any additional y-offset when drawing a cell?
159 virtual int cellYOffset(idx_type) const { return 0; }
160 /// can we enter this cell?
161 virtual bool validCell(idx_type) const { return true; }
163 virtual void getPos(idx_type idx, pos_type pos, int & x, int & y) const;
165 /// identifies certain types of insets
166 virtual MathAMSArrayInset * asAMSArrayInset() { return 0; }
167 virtual MathAMSArrayInset const * asAMSArrayInset() const { return 0; }
168 virtual MathArrayInset * asArrayInset() { return 0; }
169 virtual MathArrayInset const * asArrayInset() const { return 0; }
170 virtual MathCharInset const * asCharInset() const { return 0; }
171 virtual MathDelimInset * asDelimInset() { return 0; }
172 virtual MathDelimInset const * asDelimInset() const { return 0; }
173 virtual MathFracInset * asFracInset() { return 0; }
174 virtual MathFracInset const * asFracInset() const { return 0; }
175 virtual MathFontInset * asFontInset() { return 0; }
176 virtual MathFontInset const * asFontInset() const { return 0; }
177 virtual MathGridInset * asGridInset() { return 0; }
178 virtual MathGridInset const * asGridInset() const { return 0; }
179 virtual MathHullInset * asHullInset() { return 0; }
180 virtual MathHullInset const * asHullInset() const { return 0; }
181 virtual MathMacroTemplate * asMacroTemplate() { return 0; }
182 virtual MathMacroTemplate const * asMacroTemplate() const { return 0; }
183 virtual MathMatrixInset const * asMatrixInset() const { return 0; }
184 virtual MathNestInset * asNestInset() { return 0; }
185 virtual MathNestInset const * asNestInset() const { return 0; }
186 virtual MathParboxInset * asParboxInset() { return 0; }
187 virtual MathScriptInset * asScriptInset() { return 0; }
188 virtual MathScriptInset const * asScriptInset() const { return 0; }
189 virtual MathSpaceInset * asSpaceInset() { return 0; }
190 virtual MathSpaceInset const * asSpaceInset() const { return 0; }
191 virtual MathStringInset * asStringInset() { return 0; }
192 virtual MathStringInset const * asStringInset() const { return 0; }
193 virtual MathSymbolInset const * asSymbolInset() const { return 0; }
194 virtual MathUnknownInset * asUnknownInset() { return 0; }
195 virtual MathUnknownInset const * asUnknownInset() const { return 0; }
196 virtual RefInset * asRefInset() { return 0; }
198 /// identifies things that can get scripts
199 virtual bool isScriptable() const { return false; }
200 /// thing that can be moved into
201 virtual bool isActive() const { return nargs() > 0; }
202 /// is the a relational operator (used for splitting equations)
203 virtual bool isRelOp() const { return false; }
204 /// -1: text mode, 1: math mode, 0 undecided
205 enum mode_type {UNDECIDED_MODE, TEXT_MODE, MATH_MODE};
207 virtual mode_type currentMode() const { return UNDECIDED_MODE; }
208 /// will this get written as a single block in {..}
209 virtual bool extraBraces() const { return false; }
211 /// return the content as char if the inset is able to do so
212 virtual char getChar() const { return 0; }
213 /// identifies things that can get \limits or \nolimits
214 virtual bool takesLimits() const { return false; }
216 /// request "external features"
217 virtual void validate(LaTeXFeatures &) const {}
218 /// char char code if possible
219 virtual void handleFont(string const &) {}
220 /// is this inset equal to a given other inset?
221 virtual bool match(MathAtom const &) const { return false; }
222 /// replace things by other things
223 virtual void replace(ReplaceData &) {}
224 /// do we contain a given subsequence?
225 virtual bool contains(MathArray const &) const { return false; }
226 /// access to the lock (only nest array have one)
227 virtual bool lock() const { return false; }
228 /// access to the lock (only nest array have one)
229 virtual void lock(bool) {}
230 /// get notification when the cursor leaves this inset
231 virtual void notifyCursorLeaves(idx_type) {}
233 /// write LaTeX and Lyx code
234 virtual void write(WriteStream & os) const;
235 /// write normalized content
236 virtual void normalize(NormalStream &) const;
237 /// write content as something readable by Maple
238 virtual void maple(MapleStream &) const;
239 /// write content as something readable by Maxima
240 virtual void maxima(MaximaStream &) const;
241 /// write content as something readable by Mathematica
242 virtual void mathematica(MathematicaStream &) const;
243 /// write content as something resembling MathML
244 virtual void mathmlize(MathMLStream &) const;
245 /// write content as something readable by Octave
246 virtual void octave(OctaveStream &) const;
247 /// describe content if cursor inside
248 virtual void infoize(std::ostream &) const {}
249 /// describe content if cursor behind
250 virtual void infoize2(std::ostream &) const {}
251 /// plain ascii output
252 virtual int ascii(std::ostream & os, int) const;
254 virtual int linuxdoc(std::ostream & os) const;
256 virtual int docbook(std::ostream & os, bool) const;
258 /// dump content to stderr for debugging
259 virtual void dump() const;
262 /// write labels into a list
263 virtual void getLabelList(std::vector<string> &) const {}
265 virtual bool numberedType() const { return false; }
267 virtual string const & getType() const;
269 virtual void mutate(string const &) {}
270 /// how is the inset called in the .lyx file?
271 virtual string fileInsetLabel() const;
272 /// usually the latex name
273 virtual string name() const;
277 BufferView * view() const;
280 std::ostream & operator<<(std::ostream &, MathAtom const &);