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"
31 #include "BufferView.h"
35 #include "funcrequest.h"
37 #include "support/LOstream.h"
38 #include "support/LAssert.h"
39 #include "support/lyxlib.h"
40 #include "support/systemcall.h"
41 #include "support/filetools.h"
43 #include "frontends/Alert.h"
44 #include "frontends/LyXView.h"
45 #include "frontends/Painter.h"
47 #include "graphics/PreviewedInset.h"
48 #include "graphics/PreviewImage.h"
55 class InsetFormula::PreviewImpl : public grfx::PreviewedInset {
58 PreviewImpl(InsetFormula & p) : PreviewedInset(p) {}
62 bool previewWanted() const;
64 string const latexString() const;
66 InsetFormula & parent() const
68 return *static_cast<InsetFormula*>(inset());
74 InsetFormula::InsetFormula(bool chemistry)
75 : par_(MathAtom(new MathHullInset)),
76 preview_(new PreviewImpl(*this))
83 InsetFormula::InsetFormula(InsetFormula const & other)
84 : InsetFormulaBase(other),
86 preview_(new PreviewImpl(*this))
90 InsetFormula::InsetFormula(BufferView * bv)
91 : par_(MathAtom(new MathHullInset)),
92 preview_(new PreviewImpl(*this))
94 view_ = bv->owner()->view();
98 InsetFormula::InsetFormula(string const & data)
99 : par_(MathAtom(new MathHullInset)),
100 preview_(new PreviewImpl(*this))
104 if (!mathed_parse_normal(par_, data))
105 lyxerr << "cannot interpret '" << data << "' as math\n";
110 InsetFormula::~InsetFormula()
114 Inset * InsetFormula::clone(Buffer const &, bool) const
116 return new InsetFormula(*this);
120 void InsetFormula::write(Buffer const *, ostream & os) const
122 WriteStream wi(os, false, false);
123 os << par_->fileInsetLabel() << ' ';
128 int InsetFormula::latex(Buffer const *, ostream & os, bool fragile, bool) const
130 WriteStream wi(os, fragile, true);
136 int InsetFormula::ascii(Buffer const *, ostream & os, int) const
138 if (0 && display()) {
141 TextPainter tpain(par()->width(), par()->height());
142 par()->drawT(tpain, 0, par()->ascent());
144 // reset metrics cache to "real" values
146 return tpain.textheight();
148 WriteStream wi(os, false, true);
149 wi << ' ' << (par_->asNestInset()->cell(0)) << ' ';
155 int InsetFormula::linuxdoc(Buffer const * buf, ostream & os) const
157 return docbook(buf, os, false);
161 int InsetFormula::docbook(Buffer const * buf, ostream & os, bool) const
164 ms << MTag("equation");
167 int res = ascii(buf, ms.os(), 0);
173 ms << ETag("equation");
174 return ms.line() + res;
178 void InsetFormula::read(Buffer const *, LyXLex & lex)
180 mathed_parse_normal(par_, lex);
181 // remove extra 'mathrm' for chemistry stuff.
182 // will be re-added on write
183 if (par_->asHullInset()->getType() =="chemistry") {
184 lyxerr << "this is chemistry\n";
185 if (par_->cell(0).size() == 1) {
186 lyxerr << "this is size 1\n";
187 if (par_->cell(0)[0]->asFontInset()) {
188 lyxerr << "this is a font inset \n";
189 lyxerr << "replacing " << par_.nucleus()->cell(0) <<
190 " with " << par_->cell(0)[0]->cell(0) << "\n";
198 //ostream & operator<<(ostream & os, LyXCursor const & c)
200 // os << '[' << c.x() << ' ' << c.y() << ' ' << c.pos() << ']';
205 void InsetFormula::draw(BufferView * bv, LyXFont const & font,
206 int y, float & xx) const
209 // This initiates the loading of the preview, so should come
210 // before the metrics are computed.
211 bool const use_preview = preview_->previewReady();
213 int const x = int(xx);
214 int const w = width(bv, font);
215 int const d = descent(bv, font);
216 int const a = ascent(bv, font);
219 PainterInfo pi(bv->painter());
222 pi.pain.image(x + 1, y - a, w, h, // one pixel gap in front
223 *(preview_->pimage()->image()));
225 pi.base.style = LM_ST_TEXT;
227 pi.base.font.setColor(LColor::math);
228 if (lcolor.getX11Name(LColor::mathbg)
229 != lcolor.getX11Name(LColor::background))
230 pi.pain.fillRectangle(x, y - a, w, h, LColor::mathbg);
233 const_cast<InsetFormulaBase const *>(mathcursor->formula()) == this)
235 mathcursor->drawSelection(pi);
236 //pi.pain.rectangle(x, y - a, w, h, LColor::mathframe);
239 par_->draw(pi, x, y);
248 vector<string> const InsetFormula::getLabelList() const
251 par()->getLabelList(res);
256 Inset::Code InsetFormula::lyxCode() const
258 return Inset::MATH_CODE;
262 void InsetFormula::validate(LaTeXFeatures & features) const
264 par_->validate(features);
268 bool InsetFormula::insetAllowed(Inset::Code code) const
271 code == Inset::LABEL_CODE
272 || code == Inset::REF_CODE
273 || code == Inset::ERT_CODE;
277 int InsetFormula::ascent(BufferView *, LyXFont const &) const
279 return preview_->previewReady() ?
280 preview_->pimage()->ascent() : 1 + par_->ascent();
284 int InsetFormula::descent(BufferView *, LyXFont const &) const
286 if (!preview_->previewReady())
287 return 1 + par_->descent();
289 int const descent = preview_->pimage()->descent();
290 return display() ? descent + 12 : descent;
294 int InsetFormula::width(BufferView * bv, LyXFont const & font) const
297 return preview_->previewReady() ?
298 1 + preview_->pimage()->width() : par_->width();
299 // insert a one pixel gap in front of the formula
303 void InsetFormula::mutate(string const & type)
305 par_.nucleus()->mutate(type);
313 void InsetFormula::addPreview(grfx::PreviewLoader & ploader) const
315 preview_->addPreview(ploader);
319 void InsetFormula::generatePreview() const
321 preview_->generatePreview();
325 bool InsetFormula::PreviewImpl::previewWanted() const
327 return !parent().par_->asNestInset()->editing();
331 string const InsetFormula::PreviewImpl::latexString() const
334 WriteStream wi(ls, false, false);
335 parent().par_->write(wi);
336 return STRCONV(ls.str());