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 "math_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"
62 class InsetFormula::PreviewImpl : public grfx::PreviewedInset {
65 PreviewImpl(InsetFormula & p) : PreviewedInset(p) {}
69 bool previewWanted() const;
71 string const latexString() const;
73 InsetFormula & parent() const
75 return *static_cast<InsetFormula*>(inset());
81 InsetFormula::InsetFormula()
82 : par_(MathAtom(new MathHullInset)),
83 preview_(new PreviewImpl(*this))
87 InsetFormula::InsetFormula(InsetFormula const & other)
88 : InsetFormulaBase(other),
90 preview_(new PreviewImpl(*this))
94 InsetFormula::InsetFormula(BufferView * bv)
95 : par_(MathAtom(new MathHullInset)),
96 preview_(new PreviewImpl(*this))
98 view_ = bv->owner()->view();
102 InsetFormula::InsetFormula(string const & data)
103 : par_(MathAtom(new MathHullInset)),
104 preview_(new PreviewImpl(*this))
108 if (!mathed_parse_normal(par_, data))
109 lyxerr << "cannot interpret '" << data << "' as math\n";
114 InsetFormula::~InsetFormula()
118 Inset * InsetFormula::clone(Buffer const &, bool) const
120 return new InsetFormula(*this);
124 void InsetFormula::write(Buffer const *, ostream & os) const
126 WriteStream wi(os, false, false);
127 os << par_->fileInsetLabel() << ' ';
132 int InsetFormula::latex(Buffer const *, ostream & os, bool fragile, bool) const
134 WriteStream wi(os, fragile, true);
140 int InsetFormula::ascii(Buffer const *, ostream & os, int) const
142 if (0 && display()) {
145 TextPainter tpain(par()->width(), par()->height());
146 par()->drawT(tpain, 0, par()->ascent());
148 // reset metrics cache to "real" values
150 return tpain.textheight();
152 WriteStream wi(os, false, true);
153 wi << ' ' << (par_->asNestInset()->cell(0)) << ' ';
159 int InsetFormula::linuxdoc(Buffer const * buf, ostream & os) const
161 return docbook(buf, os, false);
165 int InsetFormula::docbook(Buffer const * buf, ostream & os, bool) const
168 ms << MTag("equation");
171 int res = ascii(buf, ms.os(), 0);
177 ms << ETag("equation");
178 return ms.line() + res;
182 void InsetFormula::read(Buffer const *, LyXLex & lex)
184 mathed_parse_normal(par_, lex);
189 //ostream & operator<<(ostream & os, LyXCursor const & c)
191 // os << '[' << c.x() << ' ' << c.y() << ' ' << c.pos() << ']';
196 void InsetFormula::draw(BufferView * bv, LyXFont const & font,
197 int y, float & xx, bool) const
199 // This initiates the loading of the preview, so should come
200 // before the metrics are computed.
201 preview_->setView(bv);
202 bool const use_preview = preview_->previewReady();
204 int const x = int(xx);
205 int const w = width(bv, font);
206 int const d = descent(bv, font);
207 int const a = ascent(bv, font);
210 MathPainterInfo pi(bv->painter());
213 pi.pain.image(x + 1, y - a, w, h, // one pixel gap in front
214 *(preview_->pimage()->image()));
216 pi.base.style = LM_ST_TEXT;
218 pi.base.font.setColor(LColor::math);
219 if (lcolor.getX11Name(LColor::mathbg)
220 != lcolor.getX11Name(LColor::background))
221 pi.pain.fillRectangle(x, y - a, w, h, LColor::mathbg);
224 const_cast<InsetFormulaBase const *>(mathcursor->formula()) == this)
226 mathcursor->drawSelection(pi);
227 //pi.pain.rectangle(x, y - a, w, h, LColor::mathframe);
230 par_->draw(pi, x, y);
237 setCursorVisible(false);
241 vector<string> const InsetFormula::getLabelList() const
244 par()->getLabelList(res);
249 Inset::Code InsetFormula::lyxCode() const
251 return Inset::MATH_CODE;
255 void InsetFormula::validate(LaTeXFeatures & features) const
257 par_->validate(features);
261 bool InsetFormula::insetAllowed(Inset::Code code) const
264 code == Inset::LABEL_CODE
265 || code == Inset::REF_CODE
266 || code == Inset::ERT_CODE;
270 int InsetFormula::ascent(BufferView *, LyXFont const &) const
272 return preview_->previewReady() ?
273 preview_->pimage()->ascent() : 1 + par_->ascent();
277 int InsetFormula::descent(BufferView *, LyXFont const &) const
279 if (!preview_->previewReady())
280 return 1 + par_->descent();
282 int const descent = preview_->pimage()->descent();
283 return display() ? descent + 12 : descent;
287 int InsetFormula::width(BufferView * bv, LyXFont const & font) const
290 return preview_->previewReady() ?
291 1 + preview_->pimage()->width() : par_->width();
292 // insert a one pixel gap in front of the formula
297 void InsetFormula::mutate(string const & type)
299 par_.nucleus()->mutate(type);
308 void InsetFormula::addPreview(grfx::PreviewLoader & ploader) const
310 preview_->addPreview(ploader);
314 void InsetFormula::generatePreview() const
316 preview_->generatePreview();
320 bool InsetFormula::PreviewImpl::previewWanted() const
322 return !parent().par_->asNestInset()->editing();
326 string const InsetFormula::PreviewImpl::latexString() const
329 WriteStream wi(ls, false, false);
330 parent().par_->write(wi);
331 return STRCONV(ls.str());