3 * Purpose: Implementation of formula inset
4 * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
5 * Created: January 1996
6 * Description: Allows the edition of math paragraphs inside Lyx.
8 * Copyright: 1996-1998 Alejandro Aguilar Sierra
10 * Version: 0.4, Lyx project.
12 * You are free to use and modify this code under the terms of
13 * the GNU General Public Licence version 2 or later.
17 #pragma implementation
23 #include "commandtags.h"
24 #include "math_cursor.h"
25 #include "math_parser.h"
26 #include "math_charinset.h"
27 #include "math_arrayinset.h"
28 #include "math_deliminset.h"
30 #include "BufferView.h"
33 #include "frontends/Alert.h"
34 #include "support/LOstream.h"
35 #include "support/LAssert.h"
36 #include "support/filetools.h" // LibFileSearch
37 #include "frontends/LyXView.h"
38 #include "frontends/Painter.h"
40 #include "math_hullinset.h"
41 #include "math_support.h"
42 #include "math_mathmlstream.h"
43 #include "textpainter.h"
46 #include "graphics/GraphicsCacheItem.h"
58 InsetFormula::InsetFormula()
59 : par_(MathAtom(new MathHullInset))
63 InsetFormula::InsetFormula(MathInsetTypes t)
64 : par_(MathAtom(new MathHullInset(t)))
68 InsetFormula::InsetFormula(string const & s)
71 bool res = mathed_parse_normal(par_, s);
74 res = mathed_parse_normal(par_, "$" + s + "$");
77 lyxerr << "cannot interpret '" << s << "' as math\n";
78 par_ = MathAtom(new MathHullInset(LM_OT_SIMPLE));
85 Inset * InsetFormula::clone(Buffer const &, bool) const
87 return new InsetFormula(*this);
91 void InsetFormula::write(Buffer const *, ostream & os) const
94 WriteStream wi(os, false, false);
99 int InsetFormula::latex(Buffer const *, ostream & os, bool fragile, bool) const
101 WriteStream wi(os, fragile, true);
107 int InsetFormula::ascii(Buffer const *, ostream & os, int) const
112 TextPainter tpain(par()->width(), par()->height());
113 par()->drawT(tpain, 0, par()->ascent());
115 // reset metrics cache to "real" values
117 return tpain.textheight();
119 WriteStream wi(os, false, true);
126 int InsetFormula::linuxdoc(Buffer const * buf, ostream & os) const
128 return docbook(buf, os, false);
132 int InsetFormula::docbook(Buffer const * buf, ostream & os, bool) const
135 ms << MTag("equation");
138 int res = ascii(buf, ms.os(), 0);
142 ms << par_.nucleus();
144 ms << ETag("equation");
145 return ms.line() + res;
149 void InsetFormula::read(Buffer const *, LyXLex & lex)
151 mathed_parse_normal(par_, lex);
156 //ostream & operator<<(ostream & os, LyXCursor const & c)
158 // os << '[' << c.x() << ' ' << c.y() << ' ' << c.pos() << ']';
163 void InsetFormula::draw(BufferView * bv, LyXFont const & font,
164 int y, float & xx, bool) const
169 int w = par_->width();
170 int h = par_->height();
171 int a = par_->ascent();
173 MathPainterInfo pi(bv->painter());
175 pi.base.font.setColor(LColor::math);
176 pi.base.style = display() ? LM_ST_DISPLAY : LM_ST_TEXT;
178 if (lcolor.getX11Name(LColor::mathbg)!=lcolor.getX11Name(LColor::background))
179 pi.pain.fillRectangle(x, y - a, w, h, LColor::mathbg);
182 const_cast<InsetFormulaBase const *>(mathcursor->formula()) == this)
184 mathcursor->drawSelection(pi);
185 pi.pain.rectangle(x, y - a, w, h, LColor::mathframe);
188 par_->draw(pi, x, y);
193 WriteStream wi(os, false, false);
195 if (preview(os.str(), preview_) && preview_.get()) {
196 cerr << "image could be drawn\n";
197 // LyX crashes if we try that. Why? Andre'
198 //pi.pain.image(x, y, w, h, *(preview_->image()));
206 setCursorVisible(false);
210 vector<string> const InsetFormula::getLabelList() const
212 return hull()->getLabelList();
216 UpdatableInset::RESULT
217 InsetFormula::localDispatch(BufferView * bv, kb_action action,
220 RESULT result = DISPATCHED;
225 bv->lockedInsetStoreUndo(Undo::INSERT);
226 mathcursor->breakLine();
227 mathcursor->normalize();
228 updateLocal(bv, true);
231 case LFUN_MATH_NUMBER:
233 //lyxerr << "toggling all numbers\n";
235 bv->lockedInsetStoreUndo(Undo::INSERT);
236 bool old = hull()->numberedType();
237 for (MathInset::row_type row = 0; row < par_->nrows(); ++row)
238 hull()->numbered(row, !old);
239 bv->owner()->message(old ? _("No number") : _("Number"));
240 updateLocal(bv, true);
245 case LFUN_MATH_NONUMBER:
247 //lyxerr << "toggling line number\n";
249 bv->lockedInsetStoreUndo(Undo::INSERT);
250 MathCursor::row_type row = mathcursor->hullRow();
251 bool old = hull()->numbered(row);
252 bv->owner()->message(old ? _("No number") : _("Number"));
253 hull()->numbered(row, !old);
254 updateLocal(bv, true);
259 case LFUN_INSERT_LABEL:
261 bv->lockedInsetStoreUndo(Undo::INSERT);
263 MathCursor::row_type row = mathcursor->hullRow();
264 string old_label = hull()->label(row);
265 string new_label = arg;
267 if (new_label.empty()) {
268 string const default_label =
269 (lyxrc.label_init_length >= 0) ? "eq:" : "";
270 pair<bool, string> const res = old_label.empty()
271 ? Alert::askForText(_("Enter new label to insert:"), default_label)
272 : Alert::askForText(_("Enter label:"), old_label);
275 new_label = frontStrip(strip(res.second));
278 //if (new_label == old_label)
279 // break; // Nothing to do
281 if (!new_label.empty()) {
282 lyxerr << "setting label to '" << new_label << "'\n";
283 hull()->numbered(row, true);
286 #warning FIXME: please check you really mean repaint() ... is it needed,
287 #warning and if so, should it be update() instead ?
288 if (!new_label.empty() && bv->ChangeRefsIfUnique(old_label, new_label))
291 hull()->label(row, new_label);
293 updateLocal(bv, true);
297 case LFUN_MATH_MUTATE:
299 bv->lockedInsetStoreUndo(Undo::EDIT);
302 mathcursor->getPos(x, y);
304 mathcursor->setPos(x, y);
305 mathcursor->normalize();
306 updateLocal(bv, true);
310 case LFUN_MATH_EXTERN:
312 bv->lockedInsetStoreUndo(Undo::EDIT);
314 mathcursor->handleExtern(arg);
315 // re-compute inset dimension
317 updateLocal(bv, true);
321 case LFUN_MATH_DISPLAY:
325 mathcursor->getPos(x, y);
326 if (getType() == LM_OT_SIMPLE)
327 hull()->mutate(LM_OT_EQUATION);
329 hull()->mutate(LM_OT_SIMPLE);
330 mathcursor->setPos(x, y);
331 mathcursor->normalize();
332 updateLocal(bv, true);
336 case LFUN_PASTESELECTION:
338 string const clip = bv->getClipboard();
340 mathed_parse_normal(par_, clip);
345 result = InsetFormulaBase::localDispatch(bv, action, arg);
352 bool InsetFormula::display() const
354 return getType() != LM_OT_SIMPLE;
358 MathHullInset const * InsetFormula::hull() const
360 lyx::Assert(par_->asHullInset());
361 return par_->asHullInset();
365 MathHullInset * InsetFormula::hull()
367 lyx::Assert(par_->asHullInset());
368 return par_->asHullInset();
372 Inset::Code InsetFormula::lyxCode() const
374 return Inset::MATH_CODE;
378 void InsetFormula::validate(LaTeXFeatures & features) const
380 par_->validate(features);
384 bool InsetFormula::insetAllowed(Inset::Code code) const
387 (code == Inset::LABEL_CODE && display())
388 || code == Inset::REF_CODE
389 || code == Inset::ERT_CODE;
393 int InsetFormula::ascent(BufferView *, LyXFont const &) const
395 return par_->ascent() + 1;
399 int InsetFormula::descent(BufferView *, LyXFont const &) const
401 return par_->descent() + 1;
405 int InsetFormula::width(BufferView * bv, LyXFont const & font) const
408 return par_->width();
412 MathInsetTypes InsetFormula::getType() const
414 return hull()->getType();