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.
20 #include "math_cursor.h"
21 #include "math_parser.h"
22 #include "math_charinset.h"
23 #include "math_arrayinset.h"
24 #include "metricsinfo.h"
25 #include "math_deliminset.h"
26 #include "math_hullinset.h"
27 #include "math_support.h"
28 #include "math_mathmlstream.h"
29 #include "textpainter.h"
32 #include "BufferView.h"
36 #include "funcrequest.h"
38 #include "support/LOstream.h"
39 #include "support/LAssert.h"
40 #include "support/lyxlib.h"
41 #include "support/systemcall.h"
42 #include "support/filetools.h"
44 #include "frontends/Alert.h"
45 #include "frontends/LyXView.h"
46 #include "frontends/Painter.h"
48 #include "graphics/PreviewedInset.h"
49 #include "graphics/PreviewImage.h"
56 class InsetFormula::PreviewImpl : public grfx::PreviewedInset {
59 PreviewImpl(InsetFormula & p) : PreviewedInset(p) {}
63 bool previewWanted() const;
65 string const latexString() const;
67 InsetFormula & parent() const
69 return *static_cast<InsetFormula*>(inset());
75 InsetFormula::InsetFormula(bool chemistry)
76 : par_(MathAtom(new MathHullInset)),
77 preview_(new PreviewImpl(*this))
84 InsetFormula::InsetFormula(InsetFormula const & other)
85 : InsetFormulaBase(other),
87 preview_(new PreviewImpl(*this))
91 InsetFormula::InsetFormula(BufferView * bv)
92 : par_(MathAtom(new MathHullInset)),
93 preview_(new PreviewImpl(*this))
95 view_ = bv->owner()->view();
99 InsetFormula::InsetFormula(string const & data)
100 : par_(MathAtom(new MathHullInset)),
101 preview_(new PreviewImpl(*this))
105 if (!mathed_parse_normal(par_, data))
106 lyxerr << "cannot interpret '" << data << "' as math\n";
111 InsetFormula::~InsetFormula()
115 Inset * InsetFormula::clone(Buffer const &, bool) const
117 return new InsetFormula(*this);
121 void InsetFormula::write(Buffer const *, ostream & os) const
123 WriteStream wi(os, false, false);
124 os << par_->fileInsetLabel() << ' ';
129 int InsetFormula::latex(Buffer const *, ostream & os, bool fragile, bool) const
131 WriteStream wi(os, fragile, true);
137 int InsetFormula::ascii(Buffer const *, ostream & os, int) const
139 if (0 && display()) {
142 TextPainter tpain(par()->width(), par()->height());
143 par()->drawT(tpain, 0, par()->ascent());
145 // reset metrics cache to "real" values
147 return tpain.textheight();
149 WriteStream wi(os, false, true);
150 wi << ' ' << (par_->asNestInset()->cell(0)) << ' ';
156 int InsetFormula::linuxdoc(Buffer const * buf, ostream & os) const
158 return docbook(buf, os, false);
162 int InsetFormula::docbook(Buffer const * buf, ostream & os, bool) const
165 ms << MTag("equation");
168 int res = ascii(buf, ms.os(), 0);
174 ms << ETag("equation");
175 return ms.line() + res;
179 void InsetFormula::read(Buffer const *, LyXLex & lex)
181 mathed_parse_normal(par_, lex);
182 // remove extra 'mathrm' for chemistry stuff.
183 // will be re-added on write
184 if (par_->asHullInset()->getType() =="chemistry") {
185 lyxerr << "this is chemistry\n";
186 if (par_->cell(0).size() == 1) {
187 lyxerr << "this is size 1\n";
188 if (par_->cell(0)[0]->asFontInset()) {
189 lyxerr << "this is a font inset \n";
190 lyxerr << "replacing " << par_.nucleus()->cell(0) <<
191 " with " << par_->cell(0)[0]->cell(0) << "\n";
199 //ostream & operator<<(ostream & os, LyXCursor const & c)
201 // os << '[' << c.x() << ' ' << c.y() << ' ' << c.pos() << ']';
206 void InsetFormula::draw(BufferView * bv, LyXFont const & font,
207 int y, float & xx) const
210 // This initiates the loading of the preview, so should come
211 // before the metrics are computed.
212 bool const use_preview = preview_->previewReady();
214 int const x = int(xx);
215 int const w = width(bv, font);
216 int const d = descent(bv, font);
217 int const a = ascent(bv, font);
220 PainterInfo pi(bv->painter());
223 pi.pain.image(x + 1, y - a, w, h, // one pixel gap in front
224 *(preview_->pimage()->image()));
226 pi.base.style = LM_ST_TEXT;
228 pi.base.font.setColor(LColor::math);
229 if (lcolor.getX11Name(LColor::mathbg)
230 != lcolor.getX11Name(LColor::background))
231 pi.pain.fillRectangle(x, y - a, w, h, LColor::mathbg);
234 const_cast<InsetFormulaBase const *>(mathcursor->formula()) == this)
236 mathcursor->drawSelection(pi);
237 //pi.pain.rectangle(x, y - a, w, h, LColor::mathframe);
240 par_->draw(pi, x, y);
249 vector<string> const InsetFormula::getLabelList() const
252 par()->getLabelList(res);
257 Inset::Code InsetFormula::lyxCode() const
259 return Inset::MATH_CODE;
263 void InsetFormula::validate(LaTeXFeatures & features) const
265 par_->validate(features);
269 bool InsetFormula::insetAllowed(Inset::Code code) const
272 code == Inset::LABEL_CODE
273 || code == Inset::REF_CODE
274 || code == Inset::ERT_CODE;
278 int InsetFormula::ascent(BufferView *, LyXFont const &) const
280 return preview_->previewReady() ?
281 preview_->pimage()->ascent() : 1 + par_->ascent();
285 int InsetFormula::descent(BufferView *, LyXFont const &) const
287 if (!preview_->previewReady())
288 return 1 + par_->descent();
290 int const descent = preview_->pimage()->descent();
291 return display() ? descent + 12 : descent;
295 int InsetFormula::width(BufferView * bv, LyXFont const & font) const
298 return preview_->previewReady() ?
299 1 + preview_->pimage()->width() : par_->width();
300 // insert a one pixel gap in front of the formula
304 void InsetFormula::mutate(string const & type)
306 par_.nucleus()->mutate(type);
314 void InsetFormula::addPreview(grfx::PreviewLoader & ploader) const
316 preview_->addPreview(ploader);
320 void InsetFormula::generatePreview() const
322 preview_->generatePreview();
326 bool InsetFormula::PreviewImpl::previewWanted() const
328 return !parent().par_->asNestInset()->editing();
332 string const InsetFormula::PreviewImpl::latexString() const
335 WriteStream wi(ls, false, false);
336 parent().par_->write(wi);
337 return STRCONV(ls.str());