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[lyx.git] / src / insets / InsetText.cpp
1 /**
2  * \file InsetText.cpp
3  * This file is part of LyX, the document processor.
4  * Licence details can be found in the file COPYING.
5  *
6  * \author Jürgen Vigna
7  *
8  * Full author contact details are available in file CREDITS.
9  */
10
11 #include <config.h>
12
13 #include "InsetText.h"
14 #include "InsetNewline.h"
15
16 #include "Buffer.h"
17 #include "buffer_funcs.h"
18 #include "BufferParams.h"
19 #include "BufferView.h"
20 #include "CoordCache.h"
21 #include "CutAndPaste.h"
22 #include "Cursor.h"
23 #include "debug.h"
24 #include "DispatchResult.h"
25 #include "ErrorList.h"
26 #include "FuncRequest.h"
27 #include "gettext.h"
28 #include "Intl.h"
29 #include "Color.h"
30 #include "lyxfind.h"
31 #include "Lexer.h"
32 #include "LyXRC.h"
33 #include "Text.h"
34 #include "MetricsInfo.h"
35 #include "OutputParams.h"
36 #include "output_docbook.h"
37 #include "output_latex.h"
38 #include "output_plaintext.h"
39 #include "Paragraph.h"
40 #include "paragraph_funcs.h"
41 #include "ParagraphParameters.h"
42 #include "ParIterator.h"
43 #include "Row.h"
44 #include "sgml.h"
45 #include "TexRow.h"
46 #include "Undo.h"
47
48 #include "frontends/alert.h"
49 #include "frontends/Painter.h"
50
51 #include "support/lyxalgo.h" // count
52
53 #include <boost/bind.hpp>
54 #include <boost/current_function.hpp>
55 #include <boost/signal.hpp>
56
57 #include <sstream>
58
59
60 namespace lyx {
61
62 using graphics::PreviewLoader;
63
64 using support::isStrUnsignedInt;
65
66 using boost::bind;
67 using boost::ref;
68
69 using std::endl;
70 using std::for_each;
71 using std::max;
72 using std::string;
73 using std::auto_ptr;
74 using std::ostream;
75 using std::vector;
76
77
78 int InsetText::border_ = 2;
79
80
81 InsetText::InsetText(BufferParams const & bp)
82         : drawFrame_(false), frame_color_(Color::insetframe)
83 {
84         paragraphs().push_back(Paragraph());
85         paragraphs().back().layout(bp.getTextClass().defaultLayout());
86         // Dispose of the infamous L-shaped cursor.
87         text_.current_font.setLanguage(bp.language);
88         text_.real_current_font.setLanguage(bp.language);
89         init();
90 }
91
92
93 InsetText::InsetText(InsetText const & in)
94         : Inset(in), text_()
95 {
96         text_.autoBreakRows_ = in.text_.autoBreakRows_;
97         drawFrame_ = in.drawFrame_;
98         frame_color_ = in.frame_color_;
99         text_.paragraphs() = in.text_.paragraphs();
100         // Hand current buffer language down to "cloned" textinsets
101         // e.g. tabular cells
102         text_.current_font = in.text_.current_font;
103         text_.real_current_font = in.text_.real_current_font;
104         init();
105 }
106
107
108 InsetText::InsetText()
109 {}
110
111
112 void InsetText::init()
113 {
114         for_each(paragraphs().begin(), paragraphs().end(),
115                  bind(&Paragraph::setInsetOwner, _1, this));
116 }
117
118
119 void InsetText::clear()
120 {
121         ParagraphList & pars = paragraphs();
122
123         // This is a gross hack...
124         LayoutPtr old_layout = pars.begin()->layout();
125
126         pars.clear();
127         pars.push_back(Paragraph());
128         pars.begin()->setInsetOwner(this);
129         pars.begin()->layout(old_layout);
130 }
131
132
133 auto_ptr<Inset> InsetText::doClone() const
134 {
135         return auto_ptr<Inset>(new InsetText(*this));
136 }
137
138
139 void InsetText::write(Buffer const & buf, ostream & os) const
140 {
141         os << "Text\n";
142         text_.write(buf, os);
143 }
144
145
146 void InsetText::read(Buffer const & buf, Lexer & lex)
147 {
148         clear();
149
150         // delete the initial paragraph
151         Paragraph oldpar = *paragraphs().begin();
152         paragraphs().clear();
153         ErrorList errorList;
154         bool res = text_.read(buf, lex, errorList);
155         init();
156
157         if (!res) {
158                 lex.printError("Missing \\end_inset at this point. "
159                                            "Read: `$$Token'");
160         }
161
162         // sanity check
163         // ensure we have at least one paragraph.
164         if (paragraphs().empty())
165                 paragraphs().push_back(oldpar);
166 }
167
168
169 bool InsetText::metrics(MetricsInfo & mi, Dimension & dim) const
170 {
171         TextMetrics & tm = mi.base.bv->textMetrics(&text_);
172
173         //lyxerr << "InsetText::metrics: width: " << mi.base.textwidth << endl;
174         mi.base.textwidth -= 2 * border_;
175         font_ = mi.base.font;
176         // Hand font through to contained lyxtext:
177         text_.font_ = mi.base.font;
178         tm.metrics(mi, dim);
179         dim.asc += border_;
180         dim.des += border_;
181         dim.wid += 2 * border_;
182         mi.base.textwidth += 2 * border_;
183         bool const changed = dim_ != dim;
184         dim_ = dim;
185         return changed;
186 }
187
188
189 void InsetText::draw(PainterInfo & pi, int x, int y) const
190 {
191         // update our idea of where we are
192         setPosCache(pi, x, y);
193
194         TextMetrics & tm = pi.base.bv->textMetrics(&text_);
195
196         tm.draw(pi, x + border_, y);
197
198         if (drawFrame_) {
199                 int const w = tm.width() + 2 * border_;
200                 int const a = tm.ascent() + border_;
201                 int const h = a + tm.descent() + border_;
202                 pi.pain.rectangle(x, y - a,
203                                   (hasFixedWidth() ? tm.maxWidth() : w),
204                                   h, frameColor());
205         }
206 }
207
208
209 void InsetText::drawSelection(PainterInfo & pi, int x, int y) const
210 {
211         TextMetrics & tm = pi.base.bv->textMetrics(&text_);
212
213         int const w = tm.width() + 2 * border_;
214         int const a = tm.ascent() + border_;
215         int const h = a + tm.descent() + border_;
216         pi.pain.fillRectangle(x, y - a,
217                               (hasFixedWidth() ? tm.maxWidth() : w),
218                               h, backgroundColor());
219         text_.drawSelection(pi, x + border_, y);
220 }
221
222
223 docstring const InsetText::editMessage() const
224 {
225         return _("Opened Text Inset");
226 }
227
228
229 void InsetText::edit(Cursor & cur, bool left)
230 {
231         //lyxerr << "InsetText: edit left/right" << endl;
232         int const pit = left ? 0 : paragraphs().size() - 1;
233         int const pos = left ? 0 : paragraphs().back().size();
234         text_.setCursor(cur.top(), pit, pos);
235         cur.clearSelection();
236         finishUndo();
237 }
238
239
240 Inset * InsetText::editXY(Cursor & cur, int x, int y)
241 {
242         return text_.editXY(cur, x, y);
243 }
244
245
246 void InsetText::doDispatch(Cursor & cur, FuncRequest & cmd)
247 {
248         LYXERR(Debug::ACTION) << BOOST_CURRENT_FUNCTION
249                              << " [ cmd.action = "
250                              << cmd.action << ']' << endl;
251         text_.dispatch(cur, cmd);
252 }
253
254
255 bool InsetText::getStatus(Cursor & cur, FuncRequest const & cmd,
256         FuncStatus & status) const
257 {
258         return text_.getStatus(cur, cmd, status);
259 }
260
261
262 void InsetText::setChange(Change const & change)
263 {
264         ParagraphList::iterator pit = paragraphs().begin();
265         ParagraphList::iterator end = paragraphs().end();
266         for (; pit != end; ++pit) {
267                 pit->setChange(change);
268         }
269 }
270
271
272 void InsetText::acceptChanges(BufferParams const & bparams)
273 {
274         text_.acceptChanges(bparams);
275 }
276
277
278 void InsetText::rejectChanges(BufferParams const & bparams)
279 {
280         text_.rejectChanges(bparams);
281 }
282
283
284 int InsetText::latex(Buffer const & buf, odocstream & os,
285                      OutputParams const & runparams) const
286 {
287         TexRow texrow;
288         latexParagraphs(buf, paragraphs(), os, texrow, runparams);
289         return texrow.rows();
290 }
291
292
293 int InsetText::plaintext(Buffer const & buf, odocstream & os,
294                          OutputParams const & runparams) const
295 {
296         ParagraphList::const_iterator beg = paragraphs().begin();
297         ParagraphList::const_iterator end = paragraphs().end();
298         ParagraphList::const_iterator it = beg;
299         bool ref_printed = false;
300         int len = 0;
301         for (; it != end; ++it) {
302                 if (it != beg) {
303                         os << '\n';
304                         if (runparams.linelen > 0)
305                                 os << '\n';
306                 }
307                 odocstringstream oss;
308                 writePlaintextParagraph(buf, *it, oss, runparams, ref_printed);
309                 docstring const str = oss.str();
310                 os << str;
311                 // FIXME: len is not computed fully correctly; in principle,
312                 // we have to count the characters after the last '\n'
313                 len = str.size();
314         }
315
316         return len;
317 }
318
319
320 int InsetText::docbook(Buffer const & buf, odocstream & os,
321                        OutputParams const & runparams) const
322 {
323         docbookParagraphs(paragraphs(), buf, os, runparams);
324         return 0;
325 }
326
327
328 void InsetText::validate(LaTeXFeatures & features) const
329 {
330         for_each(paragraphs().begin(), paragraphs().end(),
331                  bind(&Paragraph::validate, _1, ref(features)));
332 }
333
334
335 void InsetText::cursorPos(BufferView const & bv,
336                 CursorSlice const & sl, bool boundary, int & x, int & y) const
337 {
338         x = text_.cursorX(bv, sl, boundary) + border_;
339         y = text_.cursorY(bv, sl, boundary);
340 }
341
342
343 bool InsetText::showInsetDialog(BufferView *) const
344 {
345         return false;
346 }
347
348
349 void InsetText::setText(docstring const & data, Font const & font, bool trackChanges)
350 {
351         clear();
352         Paragraph & first = paragraphs().front();
353         for (unsigned int i = 0; i < data.length(); ++i)
354                 first.insertChar(i, data[i], font, trackChanges);
355 }
356
357
358 void InsetText::setAutoBreakRows(bool flag)
359 {
360         if (flag == text_.autoBreakRows_)
361                 return;
362
363         text_.autoBreakRows_ = flag;
364         if (flag)
365                 return;
366
367         // remove previously existing newlines
368         ParagraphList::iterator it = paragraphs().begin();
369         ParagraphList::iterator end = paragraphs().end();
370         for (; it != end; ++it)
371                 for (int i = 0; i < it->size(); ++i)
372                         if (it->isNewline(i))
373                                 // do not track the change, because the user
374                                 // is not allowed to revert/reject it
375                                 it->eraseChar(i, false);
376 }
377
378
379 void InsetText::setDrawFrame(bool flag)
380 {
381         drawFrame_ = flag;
382 }
383
384
385 Color_color InsetText::frameColor() const
386 {
387         return Color::color(frame_color_);
388 }
389
390
391 void InsetText::setFrameColor(Color_color col)
392 {
393         frame_color_ = col;
394 }
395
396
397 void InsetText::appendParagraphs(Buffer * buffer, ParagraphList & plist)
398 {
399         // There is little we can do here to keep track of changes.
400         // As of 2006/10/20, appendParagraphs is used exclusively by
401         // LyXTabular::setMultiColumn. In this context, the paragraph break
402         // is lost irreversibly and the appended text doesn't really change
403
404         ParagraphList & pl = paragraphs();
405
406         ParagraphList::iterator pit = plist.begin();
407         ParagraphList::iterator ins = pl.insert(pl.end(), *pit);
408         ++pit;
409         mergeParagraph(buffer->params(), pl,
410                        std::distance(pl.begin(), ins) - 1);
411
412         for_each(pit, plist.end(),
413                  bind(&ParagraphList::push_back, ref(pl), _1));
414 }
415
416
417 void InsetText::addPreview(PreviewLoader & loader) const
418 {
419         ParagraphList::const_iterator pit = paragraphs().begin();
420         ParagraphList::const_iterator pend = paragraphs().end();
421
422         for (; pit != pend; ++pit) {
423                 InsetList::const_iterator it  = pit->insetlist.begin();
424                 InsetList::const_iterator end = pit->insetlist.end();
425                 for (; it != end; ++it)
426                         it->inset->addPreview(loader);
427         }
428 }
429
430
431 //FIXME: instead of this hack, which only works by chance,
432 // cells should have their own insetcell type, which returns CELL_CODE!
433 bool InsetText::neverIndent(Buffer const & buffer) const
434 {
435         // this is only true for tabular cells
436         return !text_.isMainText(buffer) && lyxCode() == TEXT_CODE;
437 }
438
439
440 ParagraphList const & InsetText::paragraphs() const
441 {
442         return text_.paragraphs();
443 }
444
445
446 ParagraphList & InsetText::paragraphs()
447 {
448         return text_.paragraphs();
449 }
450
451
452 void InsetText::updateLabels(Buffer const & buf, ParIterator const & it)
453 {
454         ParIterator it2 = it;
455         it2.forwardPos();
456         BOOST_ASSERT(&it2.inset() == this && it2.pit() == 0);
457         lyx::updateLabels(buf, it2);
458 }
459
460
461 } // namespace lyx