1 /* This file is part of
2 * ======================================================
4 * LyX, The Document Processor
6 * Copyright 1995 Matthias Ettrich
7 * Copyright 1995-2001 The LyX Team.
9 * ====================================================== */
14 #include "paragraph.h"
16 #include "bufferparams.h"
22 #include "frontends/LyXView.h"
23 #include "frontends/Painter.h"
24 #include "frontends/font_metrics.h"
25 #include "frontends/screen.h"
26 #include "frontends/WorkArea.h"
27 #include "bufferview_funcs.h"
28 #include "BufferView.h"
30 #include "ParagraphParameters.h"
31 #include "undo_funcs.h"
32 #include "text_funcs.h"
33 #include "WordLangTuple.h"
34 #include "paragraph_funcs.h"
35 #include "rowpainter.h"
36 #include "lyxrow_funcs.h"
37 #include "metricsinfo.h"
39 #include "insets/insettext.h"
41 #include "support/textutils.h"
42 #include "support/LAssert.h"
43 #include "support/lstrings.h"
47 using namespace lyx::support;
55 using lyx::word_location;
57 using namespace bv_funcs;
59 /// top, right, bottom pixel margin
60 extern int const PAPER_MARGIN = 20;
61 /// margin for changebar
62 extern int const CHANGEBAR_MARGIN = 10;
64 extern int const LEFT_MARGIN = PAPER_MARGIN + CHANGEBAR_MARGIN;
66 int bibitemMaxWidth(BufferView *, LyXFont const &);
69 BufferView * LyXText::bv()
71 Assert(bv_owner != 0);
76 BufferView * LyXText::bv() const
78 Assert(bv_owner != 0);
83 void LyXText::updateRowPositions()
85 ParagraphList::iterator pit = ownerParagraphs().begin();
86 ParagraphList::iterator end = ownerParagraphs().end();
87 for (height = 0; pit != end; ++pit) {
88 RowList::iterator rit = pit->rows.begin();
89 RowList::iterator rend = pit->rows.end();
90 for ( ; rit != rend ; rit = ++rit) {
92 height += rit->height();
98 int LyXText::top_y() const
104 void LyXText::top_y(int newy)
107 lyxerr[Debug::GUI] << "changing reference to offset: " << anchor_y_ << endl;
111 int LyXText::workWidth() const
113 return inset_owner ? inset_owner->textWidth() : bv()->workWidth();
117 int LyXText::getRealCursorX() const
120 if (the_locking_inset && (the_locking_inset->getLyXText(bv())!= this))
121 x = the_locking_inset->getLyXText(bv())->getRealCursorX();
126 #warning FIXME This function seems to belong outside of LyxText.
127 unsigned char LyXText::transformChar(unsigned char c, Paragraph const & par,
130 if (!Encodings::is_arabic(c))
131 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
132 return c + (0xb0 - '0');
136 unsigned char const prev_char = pos > 0 ? par.getChar(pos - 1) : ' ';
137 unsigned char next_char = ' ';
139 pos_type const par_size = par.size();
141 for (pos_type i = pos + 1; i < par_size; ++i) {
142 unsigned char const par_char = par.getChar(i);
143 if (!Encodings::IsComposeChar_arabic(par_char)) {
144 next_char = par_char;
149 if (Encodings::is_arabic(next_char)) {
150 if (Encodings::is_arabic(prev_char) &&
151 !Encodings::is_arabic_special(prev_char))
152 return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
154 return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
156 if (Encodings::is_arabic(prev_char) &&
157 !Encodings::is_arabic_special(prev_char))
158 return Encodings::TransformChar(c, Encodings::FORM_FINAL);
160 return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
164 // This is the comments that some of the warnings below refers to.
165 // There are some issues in this file and I don't think they are
166 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
167 // this is a problem that has been here almost from day one and that a
168 // larger userbase with differenct access patters triggers the bad
169 // behaviour. (segfaults.) What I think happen is: In several places
170 // we store the paragraph in the current cursor and then moves the
171 // cursor. This movement of the cursor will delete paragraph at the
172 // old position if it is now empty. This will make the temporary
173 // pointer to the old cursor paragraph invalid and dangerous to use.
174 // And is some cases this will trigger a segfault. I have marked some
175 // of the cases where this happens with a warning, but I am sure there
176 // are others in this file and in text2.C. There is also a note in
177 // Delete() that you should read. In Delete I store the paragraph->id
178 // instead of a pointer to the paragraph. I am pretty sure this faulty
179 // use of temporary pointers to paragraphs that might have gotten
180 // invalidated (through a cursor movement) before they are used, are
181 // the cause of the strange crashes we get reported often.
183 // It is very tiresom to change this code, especially when it is as
184 // hard to read as it is. Help to fix all the cases where this is done
185 // would be greately appreciated.
189 int LyXText::singleWidth(ParagraphList::iterator pit, pos_type pos) const
191 if (pos >= pit->size())
194 char const c = pit->getChar(pos);
195 LyXFont const & font = getFont(pit, pos);
196 return singleWidth(pit, pos, c, font);
200 int LyXText::singleWidth(ParagraphList::iterator pit,
201 pos_type pos, char c, LyXFont const & font) const
203 if (pos >= pit->size()) {
204 lyxerr << "in singleWidth(), pos: " << pos << endl;
210 // The most common case is handled first (Asger)
211 if (IsPrintable(c)) {
212 if (font.language()->RightToLeft()) {
213 if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
214 lyxrc.font_norm_type == LyXRC::ISO_10646_1)
215 && font.language()->lang() == "arabic") {
216 if (Encodings::IsComposeChar_arabic(c))
219 c = transformChar(c, *pit, pos);
220 } else if (font.language()->lang() == "hebrew" &&
221 Encodings::IsComposeChar_hebrew(c))
224 return font_metrics::width(c, font);
227 if (c == Paragraph::META_INSET) {
228 InsetOld * tmpinset = pit->getInset(pos);
230 if (tmpinset->lyxCode() == InsetOld::HFILL_CODE) {
231 // Because of the representation as vertical lines
234 return tmpinset->width();
237 if (IsSeparatorChar(c))
239 return font_metrics::width(c, font);
243 lyx::pos_type LyXText::log2vis(lyx::pos_type pos) const
245 if (bidi_start == -1)
248 return log2vis_list[pos - bidi_start];
252 lyx::pos_type LyXText::vis2log(lyx::pos_type pos) const
254 if (bidi_start == -1)
257 return vis2log_list[pos - bidi_start];
261 lyx::pos_type LyXText::bidi_level(lyx::pos_type pos) const
263 if (bidi_start == -1)
266 return bidi_levels[pos - bidi_start];
270 bool LyXText::bidi_InRange(lyx::pos_type pos) const
272 return bidi_start == -1 ||
273 (bidi_start <= pos && pos <= bidi_end);
277 void LyXText::computeBidiTables(ParagraphList::iterator pit,
278 Buffer const * buf, RowList::iterator row) const
280 bidi_same_direction = true;
281 if (!lyxrc.rtl_support) {
286 InsetOld * inset = pit->inInset();
287 if (inset && inset->owner() &&
288 inset->owner()->lyxCode() == InsetOld::ERT_CODE) {
293 bidi_start = row->pos();
294 bidi_end = lastPrintablePos(*pit, row);
296 if (bidi_start > bidi_end) {
301 if (bidi_end + 2 - bidi_start >
302 static_cast<pos_type>(log2vis_list.size())) {
304 (bidi_end + 2 - bidi_start < 500) ?
305 500 : 2 * (bidi_end + 2 - bidi_start);
306 log2vis_list.resize(new_size);
307 vis2log_list.resize(new_size);
308 bidi_levels.resize(new_size);
311 vis2log_list[bidi_end + 1 - bidi_start] = -1;
312 log2vis_list[bidi_end + 1 - bidi_start] = -1;
316 pit->isRightToLeftPar(buf->params);
320 pos_type const body_pos = pit->beginningOfBody();
322 for (pos_type lpos = bidi_start; lpos <= bidi_end; ++lpos) {
323 bool is_space = pit->isLineSeparator(lpos);
325 (is_space && lpos + 1 <= bidi_end &&
326 !pit->isLineSeparator(lpos + 1) &&
327 !pit->isNewline(lpos + 1))
329 LyXFont font = pit->getFontSettings(buf->params, pos);
330 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
331 font.number() == LyXFont::ON &&
332 pit->getFontSettings(buf->params, lpos - 1).number()
334 font = pit->getFontSettings(buf->params, lpos);
339 bool new_rtl = font.isVisibleRightToLeft();
340 bool new_rtl0 = font.isRightToLeft();
343 if (lpos == body_pos - 1
344 && row->pos() < body_pos - 1
346 new_level = (rtl_par) ? 1 : 0;
347 new_rtl = new_rtl0 = rtl_par;
349 new_level = (new_rtl) ? 1 : 2;
351 new_level = (rtl_par) ? 2 : 0;
353 if (is_space && new_level >= level) {
359 int new_level2 = new_level;
361 if (level == new_level && rtl0 != new_rtl0) {
363 log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
364 } else if (level < new_level) {
365 log2vis_list[lpos - bidi_start] = (rtl) ? -1 : 1;
366 if (new_level > rtl_par)
367 bidi_same_direction = false;
369 log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
372 bidi_levels[lpos - bidi_start] = new_level;
374 while (level > new_level2) {
375 pos_type old_lpos = stack[--level];
376 int delta = lpos - old_lpos - 1;
379 log2vis_list[lpos - bidi_start] += delta;
380 log2vis_list[old_lpos - bidi_start] += delta;
382 while (level < new_level)
383 stack[level++] = lpos;
387 pos_type const old_lpos = stack[--level];
388 int delta = bidi_end - old_lpos;
391 log2vis_list[old_lpos - bidi_start] += delta;
394 pos_type vpos = bidi_start - 1;
395 for (pos_type lpos = bidi_start;
396 lpos <= bidi_end; ++lpos) {
397 vpos += log2vis_list[lpos - bidi_start];
398 vis2log_list[vpos - bidi_start] = lpos;
399 log2vis_list[lpos - bidi_start] = vpos;
404 // This method requires a previous call to ComputeBidiTables()
405 bool LyXText::isBoundary(Buffer const * buf, Paragraph const & par,
408 if (!lyxrc.rtl_support || pos == 0)
411 if (!bidi_InRange(pos - 1)) {
412 /// This can happen if pos is the first char of a row.
413 /// Returning false in this case is incorrect!
417 bool const rtl = bidi_level(pos - 1) % 2;
418 bool const rtl2 = bidi_InRange(pos)
419 ? bidi_level(pos) % 2
420 : par.isRightToLeftPar(buf->params);
425 bool LyXText::isBoundary(Buffer const * buf, Paragraph const & par,
426 pos_type pos, LyXFont const & font) const
428 if (!lyxrc.rtl_support)
429 return false; // This is just for speedup
431 bool const rtl = font.isVisibleRightToLeft();
432 bool const rtl2 = bidi_InRange(pos)
433 ? bidi_level(pos) % 2
434 : par.isRightToLeftPar(buf->params);
439 int LyXText::leftMargin(ParagraphList::iterator pit, Row const & row) const
443 if (row.pos() < pit->size())
444 if (pit->getChar(row.pos()) == Paragraph::META_INSET &&
445 (ins = pit->getInset(row.pos())) &&
446 (ins->needFullRow() || ins->display()))
449 LyXTextClass const & tclass =
450 bv()->buffer()->params.getLyXTextClass();
451 LyXLayout_ptr const & layout = pit->layout();
453 string parindent = layout->parindent;
457 x += font_metrics::signedWidth(tclass.leftmargin(), tclass.defaultfont());
459 // this is the way, LyX handles the LaTeX-Environments.
460 // I have had this idea very late, so it seems to be a
461 // later added hack and this is true
462 if (!pit->getDepth()) {
463 if (pit->layout() == tclass.defaultLayout()) {
464 // find the previous same level paragraph
465 if (pit != ownerParagraphs().begin()) {
466 ParagraphList::iterator newpit =
467 depthHook(pit, ownerParagraphs(),
470 newpit->layout()->nextnoindent)
475 // find the next level paragraph
477 ParagraphList::iterator newpar = outerHook(pit,
480 // make a corresponding row. Needed to call leftMargin()
482 // check wether it is a sufficent paragraph
483 if (newpar != ownerParagraphs().end() &&
484 newpar->layout()->isEnvironment()) {
485 x = leftMargin(newpar, Row(newpar->size()));
488 if (newpar != ownerParagraphs().end() &&
489 pit->layout() == tclass.defaultLayout()) {
490 if (newpar->params().noindent())
493 parindent = newpar->layout()->parindent;
499 LyXFont const labelfont = getLabelFont(pit);
500 switch (layout->margintype) {
502 if (!layout->leftmargin.empty()) {
503 x += font_metrics::signedWidth(layout->leftmargin,
504 tclass.defaultfont());
506 if (!pit->getLabelstring().empty()) {
507 x += font_metrics::signedWidth(layout->labelindent,
509 x += font_metrics::width(pit->getLabelstring(),
511 x += font_metrics::width(layout->labelsep, labelfont);
515 x += font_metrics::signedWidth(layout->labelindent, labelfont);
516 // The width of an empty par, even with manual label, should be 0
517 if (!pit->empty() && row.pos() >= pit->beginningOfBody()) {
518 if (!pit->getLabelWidthString().empty()) {
519 x += font_metrics::width(pit->getLabelWidthString(),
521 x += font_metrics::width(layout->labelsep, labelfont);
526 x += font_metrics::signedWidth(layout->leftmargin, tclass.defaultfont()) * 4
527 / (pit->getDepth() + 4);
529 case MARGIN_FIRST_DYNAMIC:
530 if (layout->labeltype == LABEL_MANUAL) {
531 if (row.pos() >= pit->beginningOfBody()) {
532 x += font_metrics::signedWidth(layout->leftmargin,
535 x += font_metrics::signedWidth(layout->labelindent,
539 // Special case to fix problems with
541 || (layout->labeltype == LABEL_STATIC
542 && layout->latextype == LATEX_ENVIRONMENT
543 && !isFirstInSequence(pit, ownerParagraphs()))) {
544 x += font_metrics::signedWidth(layout->leftmargin,
546 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
547 && layout->labeltype != LABEL_BIBLIO
548 && layout->labeltype !=
549 LABEL_CENTERED_TOP_ENVIRONMENT) {
550 x += font_metrics::signedWidth(layout->labelindent,
552 x += font_metrics::width(layout->labelsep, labelfont);
553 x += font_metrics::width(pit->getLabelstring(),
558 case MARGIN_RIGHT_ADDRESS_BOX:
560 // ok, a terrible hack. The left margin depends on the widest
561 // row in this paragraph. Do not care about footnotes, they
562 // are *NOT* allowed in the LaTeX realisation of this layout.
564 // find the first row of this paragraph
565 RowList::iterator rit = pit->rows.begin();
566 RowList::iterator end = pit->rows.end();
567 int minfill = rit->fill();
568 for ( ; rit != end; ++rit)
569 if (rit->fill() < minfill)
570 minfill = rit->fill();
572 x += font_metrics::signedWidth(layout->leftmargin,
573 tclass.defaultfont());
579 if (workWidth() > 0 && !pit->params().leftIndent().zero()) {
580 LyXLength const len = pit->params().leftIndent();
581 int const tw = inset_owner ?
582 inset_owner->latexTextWidth(bv()) : workWidth();
583 x += len.inPixels(tw);
588 if (pit->params().align() == LYX_ALIGN_LAYOUT)
589 align = layout->align;
591 align = pit->params().align();
593 // set the correct parindent
594 if (row.pos() == 0) {
595 if ((layout->labeltype == LABEL_NO_LABEL
596 || layout->labeltype == LABEL_TOP_ENVIRONMENT
597 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
598 || (layout->labeltype == LABEL_STATIC
599 && layout->latextype == LATEX_ENVIRONMENT
600 && !isFirstInSequence(pit, ownerParagraphs())))
601 && align == LYX_ALIGN_BLOCK
602 && !pit->params().noindent()
603 // in tabulars and ert paragraphs are never indented!
604 && (!pit->inInset() || !pit->inInset()->owner() ||
605 (pit->inInset()->owner()->lyxCode() != InsetOld::TABULAR_CODE &&
606 pit->inInset()->owner()->lyxCode() != InsetOld::ERT_CODE))
607 && (pit->layout() != tclass.defaultLayout() ||
608 bv()->buffer()->params.paragraph_separation ==
609 BufferParams::PARSEP_INDENT)) {
610 x += font_metrics::signedWidth(parindent,
611 tclass.defaultfont());
612 } else if (layout->labeltype == LABEL_BIBLIO) {
613 // ale970405 Right width for bibitems
614 x += bibitemMaxWidth(bv(), tclass.defaultfont());
622 int LyXText::rightMargin(ParagraphList::iterator pit,
623 Buffer const & buf, Row const & row) const
627 if (row.pos() < pit->size())
628 if ((pit->getChar(row.pos()) == Paragraph::META_INSET) &&
629 (ins = pit->getInset(row.pos())) &&
630 (ins->needFullRow() || ins->display()))
633 LyXTextClass const & tclass = buf.params.getLyXTextClass();
634 LyXLayout_ptr const & layout = pit->layout();
637 + font_metrics::signedWidth(tclass.rightmargin(),
638 tclass.defaultfont());
639 + font_metrics::signedWidth(layout->rightmargin,
640 tclass.defaultfont())
641 * 4 / (pit->getDepth() + 4);
645 int LyXText::labelEnd(ParagraphList::iterator pit, Row const & row) const
647 if (pit->layout()->margintype == MARGIN_MANUAL) {
649 tmprow.pos(pit->size());
650 // return the beginning of the body
651 return leftMargin(pit, tmprow);
654 // LabelEnd is only needed if the layout
655 // fills a flushleft label.
662 // this needs special handling - only newlines count as a break point
663 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
665 for (; i < par.size(); ++i) {
666 if (par.isNewline(i))
676 pos_type LyXText::rowBreakPoint(ParagraphList::iterator pit,
677 Row const & row) const
679 // maximum pixel width of a row.
680 int width = workWidth() - rightMargin(pit, *bv()->buffer(), row);
682 // inset->textWidth() returns -1 via workWidth(),
687 LyXLayout_ptr const & layout = pit->layout();
689 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
690 return addressBreakPoint(row.pos(), *pit);
692 pos_type const pos = row.pos();
693 pos_type const body_pos = pit->beginningOfBody();
694 pos_type const last = pit->size();
695 pos_type point = last;
700 // Now we iterate through until we reach the right margin
701 // or the end of the par, then choose the possible break
704 int const left = leftMargin(pit, row);
707 // pixel width since last breakpoint
709 bool fullrow = false;
713 // We re-use the font resolution for the entire font span when possible
714 LyXFont font = getFont(pit, i);
715 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
717 for (; i < last; ++i) {
718 if (pit->isNewline(i)) {
723 char const c = pit->getChar(i);
724 if (i > endPosOfFontSpan) {
725 font = getFont(pit, i);
726 endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
731 // add the auto-hfill from label end to the body
732 if (body_pos && i == body_pos) {
733 thiswidth = font_metrics::width(layout->labelsep, getLabelFont(pit));
734 if (pit->isLineSeparator(i - 1))
735 thiswidth -= singleWidth(pit, i - 1);
736 int left_margin = labelEnd(pit, row);
737 if (thiswidth + x < left_margin)
738 thiswidth = left_margin - x;
739 thiswidth += singleWidth(pit, i, c, font);
741 thiswidth = singleWidth(pit, i, c, font);
745 chunkwidth += thiswidth;
747 InsetOld * in = pit->isInset(i) ? pit->getInset(i) : 0;
748 fullrow = in && (in->display() || in->needFullRow());
750 // break before a character that will fall off
751 // the right of the row
753 // if no break before or we are at an inset
754 // that will take up a row, break here
755 if (point == last || fullrow || chunkwidth >= (width - left)) {
764 if (!in || in->isChar()) {
765 // some insets are line separators too
766 if (pit->isLineSeparator(i)) {
776 // full row insets start at a new row
778 if (pos < last - 1) {
780 if (pit->isLineSeparator(i + 1))
783 // to avoid extra rows
793 if (point == last && x >= width) {
794 // didn't find one, break at the point we reached the edge
796 } else if (i == last && x < width) {
797 // found one, but we fell off the end of the par, so prefer
802 // manual labels cannot be broken in LaTeX. But we
803 // want to make our on-screen rendering of footnotes
805 if (!fullrow && body_pos && point < body_pos)
806 point = body_pos - 1;
812 // returns the minimum space a row needs on the screen in pixel
813 int LyXText::fill(ParagraphList::iterator pit,
814 RowList::iterator row, int paper_width) const
820 // get the pure distance
821 pos_type const last = lastPrintablePos(*pit, row);
823 LyXLayout_ptr const & layout = pit->layout();
825 // special handling of the right address boxes
826 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
827 int const tmpfill = row->fill();
828 row->fill(0); // the minfill in MarginLeft()
829 w = leftMargin(pit, *row);
832 w = leftMargin(pit, *row);
834 pos_type const body_pos = pit->beginningOfBody();
835 pos_type i = row->pos();
837 if (! pit->empty() && i <= last) {
838 // We re-use the font resolution for the entire span when possible
839 LyXFont font = getFont(pit, i);
840 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
842 if (body_pos > 0 && i == body_pos) {
843 w += font_metrics::width(layout->labelsep, getLabelFont(pit));
844 if (pit->isLineSeparator(i - 1))
845 w -= singleWidth(pit, i - 1);
846 int left_margin = labelEnd(pit, *row);
850 char const c = pit->getChar(i);
851 if (IsPrintable(c) && i > endPosOfFontSpan) {
852 // We need to get the next font
853 font = getFont(pit, i);
854 endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
856 w += singleWidth(pit, i, c, font);
860 if (body_pos > 0 && body_pos > last) {
861 w += font_metrics::width(layout->labelsep, getLabelFont(pit));
862 if (last >= 0 && pit->isLineSeparator(last))
863 w -= singleWidth(pit, last);
864 int const left_margin = labelEnd(pit, *row);
869 int const fill = paper_width - w - rightMargin(pit, *bv()->buffer(), *row);
871 // If this case happens, it means that our calculation
872 // of the widths of the chars when we do rowBreakPoint()
873 // went wrong for some reason. Typically in list bodies.
874 // Things just about hobble on anyway, though you'll end
875 // up with a "fill_separator" less than zero, which corresponds
876 // to inter-word spacing being too small. Hopefully this problem
877 // will die when the label hacks die.
878 if (lyxerr.debugging() && fill < 0) {
879 lyxerr[Debug::GUI] << "Eek, fill() was < 0: " << fill
880 << " w " << w << " paper_width " << paper_width
881 << " right margin " << rightMargin(pit, *bv()->buffer(), *row) << endl;
887 // returns the minimum space a manual label needs on the screen in pixel
888 int LyXText::labelFill(ParagraphList::iterator pit, Row const & row) const
890 pos_type last = pit->beginningOfBody();
894 // -1 because a label ends either with a space that is in the label,
895 // or with the beginning of a footnote that is outside the label.
898 // a separator at this end does not count
899 if (pit->isLineSeparator(last))
903 pos_type i = row.pos();
905 w += singleWidth(pit, i);
910 string const & labwidstr = pit->params().labelWidthString();
911 if (!labwidstr.empty()) {
912 LyXFont const labfont = getLabelFont(pit);
913 int const labwidth = font_metrics::width(labwidstr, labfont);
914 fill = max(labwidth - w, 0);
921 LColor::color LyXText::backgroundColor() const
924 return inset_owner->backgroundColor();
926 return LColor::background;
930 void LyXText::setHeightOfRow(ParagraphList::iterator pit, RowList::iterator rit)
932 // get the maximum ascent and the maximum descent
933 double layoutasc = 0;
934 double layoutdesc = 0;
937 // ok, let us initialize the maxasc and maxdesc value.
938 // Only the fontsize count. The other properties
939 // are taken from the layoutfont. Nicer on the screen :)
940 LyXLayout_ptr const & layout = pit->layout();
942 // as max get the first character of this row then it can increase but not
943 // decrease the height. Just some point to start with so we don't have to
944 // do the assignment below too often.
945 LyXFont font = getFont(pit, rit->pos());
946 LyXFont::FONT_SIZE const tmpsize = font.size();
947 font = getLayoutFont(pit);
948 LyXFont::FONT_SIZE const size = font.size();
949 font.setSize(tmpsize);
951 LyXFont labelfont = getLabelFont(pit);
953 double spacing_val = 1.0;
954 if (!pit->params().spacing().isDefault())
955 spacing_val = pit->params().spacing().getValue();
957 spacing_val = bv()->buffer()->params.spacing.getValue();
958 //lyxerr << "spacing_val = " << spacing_val << endl;
960 int maxasc = int(font_metrics::maxAscent(font) *
961 layout->spacing.getValue() * spacing_val);
962 int maxdesc = int(font_metrics::maxDescent(font) *
963 layout->spacing.getValue() * spacing_val);
965 pos_type const pos_end = lastPos(*pit, rit);
970 // We re-use the font resolution for the entire font span when possible
971 LyXFont font = getFont(pit, rit->pos());
972 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(rit->pos());
975 Paragraph const & par = *pit;
977 // Check if any insets are larger
978 for (pos_type pos = rit->pos(); pos <= pos_end; ++pos) {
979 // Manual inlined optimised version of common case of
980 // "maxwidth += singleWidth(pit, pos);"
981 char const c = par.getChar(pos);
983 if (IsPrintable(c)) {
984 if (pos > endPosOfFontSpan) {
985 // We need to get the next font
986 font = getFont(pit, pos);
987 endPosOfFontSpan = par.getEndPosOfFontSpan(pos);
989 if (! font.language()->RightToLeft()) {
990 maxwidth += font_metrics::width(c, font);
992 // Fall-back to normal case
993 maxwidth += singleWidth(pit, pos, c, font);
994 // And flush font cache
995 endPosOfFontSpan = 0;
998 // Special handling of insets - are any larger?
999 if (par.isInset(pos)) {
1000 InsetOld const * tmpinset = par.getInset(pos);
1002 maxwidth += tmpinset->width();
1003 maxasc = max(maxasc, tmpinset->ascent());
1004 maxdesc = max(maxdesc, tmpinset->descent());
1007 // Fall-back to normal case
1008 maxwidth += singleWidth(pit, pos, c, font);
1009 // And flush font cache
1010 endPosOfFontSpan = 0;
1016 // Check if any custom fonts are larger (Asger)
1017 // This is not completely correct, but we can live with the small,
1018 // cosmetic error for now.
1019 LyXFont::FONT_SIZE maxsize =
1020 pit->highestFontInRange(rit->pos(), pos_end, size);
1021 if (maxsize > font.size()) {
1022 font.setSize(maxsize);
1023 maxasc = max(maxasc, font_metrics::maxAscent(font));
1024 maxdesc = max(maxdesc, font_metrics::maxDescent(font));
1027 // This is nicer with box insets:
1031 rit->ascent_of_text(maxasc);
1033 // is it a top line?
1036 // some parksips VERY EASY IMPLEMENTATION
1037 if (bv()->buffer()->params.paragraph_separation ==
1038 BufferParams::PARSEP_SKIP)
1040 if (layout->isParagraph()
1041 && pit->getDepth() == 0
1042 && pit != ownerParagraphs().begin())
1044 maxasc += bv()->buffer()->params.getDefSkip().inPixels(*bv());
1045 } else if (pit != ownerParagraphs().begin() &&
1046 boost::prior(pit)->layout()->isParagraph() &&
1047 boost::prior(pit)->getDepth() == 0)
1049 // is it right to use defskip here too? (AS)
1050 maxasc += bv()->buffer()->params.getDefSkip().inPixels(*bv());
1055 if (pit == ownerParagraphs().begin() && !isInInset())
1056 maxasc += PAPER_MARGIN;
1058 // add the vertical spaces, that the user added
1059 maxasc += getLengthMarkerHeight(*bv(), pit->params().spaceTop());
1061 // do not forget the DTP-lines!
1062 // there height depends on the font of the nearest character
1063 if (pit->params().lineTop())
1065 maxasc += 2 * font_metrics::ascent('x', getFont(pit, 0));
1066 // and now the pagebreaks
1067 if (pit->params().pagebreakTop())
1068 maxasc += 3 * defaultRowHeight();
1070 if (pit->params().startOfAppendix())
1071 maxasc += 3 * defaultRowHeight();
1073 // This is special code for the chapter, since the label of this
1074 // layout is printed in an extra row
1075 if (layout->labeltype == LABEL_COUNTER_CHAPTER
1076 && bv()->buffer()->params.secnumdepth >= 0)
1078 float spacing_val = 1.0;
1079 if (!pit->params().spacing().isDefault()) {
1080 spacing_val = pit->params().spacing().getValue();
1082 spacing_val = bv()->buffer()->params.spacing.getValue();
1085 labeladdon = int(font_metrics::maxDescent(labelfont) *
1086 layout->spacing.getValue() *
1088 + int(font_metrics::maxAscent(labelfont) *
1089 layout->spacing.getValue() *
1093 // special code for the top label
1094 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
1095 || layout->labeltype == LABEL_BIBLIO
1096 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1097 && isFirstInSequence(pit, ownerParagraphs())
1098 && !pit->getLabelstring().empty())
1100 float spacing_val = 1.0;
1101 if (!pit->params().spacing().isDefault()) {
1102 spacing_val = pit->params().spacing().getValue();
1104 spacing_val = bv()->buffer()->params.spacing.getValue();
1108 (font_metrics::maxAscent(labelfont) +
1109 font_metrics::maxDescent(labelfont)) *
1110 layout->spacing.getValue() *
1112 + layout->topsep * defaultRowHeight()
1113 + layout->labelbottomsep * defaultRowHeight());
1116 // And now the layout spaces, for example before and after
1117 // a section, or between the items of a itemize or enumerate
1120 if (!pit->params().pagebreakTop()) {
1121 ParagraphList::iterator prev =
1122 depthHook(pit, ownerParagraphs(),
1124 if (prev != pit && prev->layout() == layout &&
1125 prev->getDepth() == pit->getDepth() &&
1126 prev->getLabelWidthString() == pit->getLabelWidthString())
1128 layoutasc = (layout->itemsep * defaultRowHeight());
1129 } else if (rit != firstRow()) {
1130 tmptop = layout->topsep;
1132 //if (boost::prior(pit)->getDepth() >= pit->getDepth())
1133 // tmptop -= getPar(previousRow(rit))->layout()->bottomsep;
1136 layoutasc = (tmptop * defaultRowHeight());
1137 } else if (pit->params().lineTop()) {
1138 tmptop = layout->topsep;
1141 layoutasc = (tmptop * defaultRowHeight());
1144 prev = outerHook(pit, ownerParagraphs());
1145 if (prev != ownerParagraphs().end()) {
1146 maxasc += int(prev->layout()->parsep * defaultRowHeight());
1147 } else if (pit != ownerParagraphs().begin()) {
1148 ParagraphList::iterator prior_pit = boost::prior(pit);
1149 if (prior_pit->getDepth() != 0 ||
1150 prior_pit->layout() == layout) {
1151 maxasc += int(layout->parsep * defaultRowHeight());
1157 // is it a bottom line?
1158 if (boost::next(rit) == pit->rows.end()) {
1159 // the bottom margin
1160 ParagraphList::iterator nextpit = boost::next(pit);
1161 if (nextpit == ownerParagraphs().end() && !isInInset())
1162 maxdesc += PAPER_MARGIN;
1164 // add the vertical spaces, that the user added
1165 maxdesc += getLengthMarkerHeight(*bv(), pit->params().spaceBottom());
1167 // do not forget the DTP-lines!
1168 // there height depends on the font of the nearest character
1169 if (pit->params().lineBottom())
1170 maxdesc += 2 * font_metrics::ascent('x',
1171 getFont(pit, max(pos_type(0), pit->size() - 1)));
1173 // and now the pagebreaks
1174 if (pit->params().pagebreakBottom())
1175 maxdesc += 3 * defaultRowHeight();
1177 // and now the layout spaces, for example before and after
1178 // a section, or between the items of a itemize or enumerate
1180 if (!pit->params().pagebreakBottom()
1181 && nextpit != ownerParagraphs().end()) {
1182 ParagraphList::iterator comparepit = pit;
1186 if (comparepit->getDepth() > nextpit->getDepth()) {
1187 usual = (comparepit->layout()->bottomsep * defaultRowHeight());
1188 comparepit = depthHook(comparepit, ownerParagraphs(), nextpit->getDepth());
1189 if (comparepit->layout()!= nextpit->layout()
1190 || nextpit->getLabelWidthString() !=
1191 comparepit->getLabelWidthString())
1193 unusual = (comparepit->layout()->bottomsep * defaultRowHeight());
1195 if (unusual > usual)
1196 layoutdesc = unusual;
1199 } else if (comparepit->getDepth() == nextpit->getDepth()) {
1201 if (comparepit->layout() != nextpit->layout()
1202 || nextpit->getLabelWidthString() !=
1203 comparepit->getLabelWidthString())
1204 layoutdesc = int(comparepit->layout()->bottomsep * defaultRowHeight());
1209 // incalculate the layout spaces
1210 maxasc += int(layoutasc * 2 / (2 + pit->getDepth()));
1211 maxdesc += int(layoutdesc * 2 / (2 + pit->getDepth()));
1213 rit->height(maxasc + maxdesc + labeladdon);
1214 rit->baseline(maxasc + labeladdon);
1215 rit->top_of_text(rit->baseline() - font_metrics::maxAscent(font));
1218 rit->width(int(maxwidth + x));
1220 width = max(0, workWidth());
1221 RowList::iterator rit = firstRow();
1222 RowList::iterator end = endRow();
1223 ParagraphList::iterator it = ownerParagraphs().begin();
1224 while (rit != end) {
1225 if (rit->width() > width)
1226 width = rit->width();
1233 void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
1235 // allow only if at start or end, or all previous is new text
1236 if (cursor.pos() && cursor.pos() != cursor.par()->size()
1237 && cursor.par()->isChangeEdited(0, cursor.pos()))
1240 LyXTextClass const & tclass =
1241 bv()->buffer()->params.getLyXTextClass();
1242 LyXLayout_ptr const & layout = cursor.par()->layout();
1244 // this is only allowed, if the current paragraph is not empty or caption
1245 // and if it has not the keepempty flag active
1246 if (cursor.par()->empty() && !cursor.par()->allowEmpty()
1247 && layout->labeltype != LABEL_SENSITIVE)
1250 recordUndo(bv(), Undo::ATOMIC, cursor.par());
1252 // Always break behind a space
1254 // It is better to erase the space (Dekel)
1255 if (cursor.pos() < cursor.par()->size()
1256 && cursor.par()->isLineSeparator(cursor.pos()))
1257 cursor.par()->erase(cursor.pos());
1259 // break the paragraph
1263 keep_layout = layout->isEnvironment();
1265 // we need to set this before we insert the paragraph. IMO the
1266 // breakParagraph call should return a bool if it inserts the
1267 // paragraph before or behind and we should react on that one
1268 // but we can fix this in 1.3.0 (Jug 20020509)
1269 bool const isempty = (cursor.par()->allowEmpty() && cursor.par()->empty());
1270 ::breakParagraph(bv()->buffer()->params, paragraphs, cursor.par(),
1271 cursor.pos(), keep_layout);
1273 #warning Trouble Point! (Lgb)
1274 // When ::breakParagraph is called from within an inset we must
1275 // ensure that the correct ParagraphList is used. Today that is not
1276 // the case and the Buffer::paragraphs is used. Not good. (Lgb)
1277 ParagraphList::iterator next_par = boost::next(cursor.par());
1279 // well this is the caption hack since one caption is really enough
1280 if (layout->labeltype == LABEL_SENSITIVE) {
1282 // set to standard-layout
1283 cursor.par()->applyLayout(tclass.defaultLayout());
1285 // set to standard-layout
1286 next_par->applyLayout(tclass.defaultLayout());
1289 // if the cursor is at the beginning of a row without prior newline,
1291 // This touches only the screen-update. Otherwise we would may have
1292 // an empty row on the screen
1293 if (cursor.pos() && cursorRow()->pos() == cursor.pos()
1294 && !cursor.par()->isNewline(cursor.pos() - 1))
1299 while (!next_par->empty() && next_par->isNewline(0))
1303 redoParagraph(cursor.par());
1304 redoParagraph(next_par);
1306 // This check is necessary. Otherwise the new empty paragraph will
1307 // be deleted automatically. And it is more friendly for the user!
1308 if (cursor.pos() || isempty)
1309 setCursor(next_par, 0);
1311 setCursor(cursor.par(), 0);
1315 // convenience function
1316 void LyXText::redoParagraph()
1319 redoParagraph(cursor.par());
1320 setCursorIntern(cursor.par(), cursor.pos());
1324 // insert a character, moves all the following breaks in the
1325 // same Paragraph one to the right and make a rebreak
1326 void LyXText::insertChar(char c)
1328 recordUndo(bv(), Undo::INSERT, cursor.par());
1330 // When the free-spacing option is set for the current layout,
1331 // disable the double-space checking
1333 bool const freeSpacing = cursor.par()->layout()->free_spacing ||
1334 cursor.par()->isFreeSpacing();
1336 if (lyxrc.auto_number) {
1337 static string const number_operators = "+-/*";
1338 static string const number_unary_operators = "+-";
1339 static string const number_seperators = ".,:";
1341 if (current_font.number() == LyXFont::ON) {
1342 if (!IsDigit(c) && !contains(number_operators, c) &&
1343 !(contains(number_seperators, c) &&
1344 cursor.pos() >= 1 &&
1345 cursor.pos() < cursor.par()->size() &&
1346 getFont(cursor.par(), cursor.pos()).number() == LyXFont::ON &&
1347 getFont(cursor.par(), cursor.pos() - 1).number() == LyXFont::ON)
1349 number(bv()); // Set current_font.number to OFF
1350 } else if (IsDigit(c) &&
1351 real_current_font.isVisibleRightToLeft()) {
1352 number(bv()); // Set current_font.number to ON
1354 if (cursor.pos() > 0) {
1355 char const c = cursor.par()->getChar(cursor.pos() - 1);
1356 if (contains(number_unary_operators, c) &&
1357 (cursor.pos() == 1 ||
1358 cursor.par()->isSeparator(cursor.pos() - 2) ||
1359 cursor.par()->isNewline(cursor.pos() - 2))
1365 } else if (contains(number_seperators, c) &&
1366 cursor.pos() >= 2 &&
1369 cursor.pos() - 2).number() == LyXFont::ON) {
1380 // First check, if there will be two blanks together or a blank at
1381 // the beginning of a paragraph.
1382 // I decided to handle blanks like normal characters, the main
1383 // difference are the special checks when calculating the row.fill
1384 // (blank does not count at the end of a row) and the check here
1386 // The bug is triggered when we type in a description environment:
1387 // The current_font is not changed when we go from label to main text
1388 // and it should (along with realtmpfont) when we type the space.
1389 // CHECK There is a bug here! (Asger)
1391 // store the current font. This is because of the use of cursor
1392 // movements. The moving cursor would refresh the current font
1393 LyXFont realtmpfont = real_current_font;
1394 LyXFont rawtmpfont = current_font;
1396 if (!freeSpacing && IsLineSeparatorChar(c)) {
1397 if ((cursor.pos() > 0
1398 && cursor.par()->isLineSeparator(cursor.pos() - 1))
1399 || (cursor.pos() > 0
1400 && cursor.par()->isNewline(cursor.pos() - 1))
1401 || (cursor.pos() == 0)) {
1402 static bool sent_space_message = false;
1403 if (!sent_space_message) {
1404 if (cursor.pos() == 0)
1405 bv()->owner()->message(_("You cannot insert a space at the beginning of a paragraph. Please read the Tutorial."));
1407 bv()->owner()->message(_("You cannot type two spaces this way. Please read the Tutorial."));
1408 sent_space_message = true;
1415 // Here case LyXText::InsertInset already inserted the character
1416 if (c != Paragraph::META_INSET)
1417 cursor.par()->insertChar(cursor.pos(), c);
1419 setCharFont(cursor.par(), cursor.pos(), rawtmpfont);
1421 current_font = rawtmpfont;
1422 real_current_font = realtmpfont;
1423 redoParagraph(cursor.par());
1424 setCursor(cursor.par(), cursor.pos() + 1, false, cursor.boundary());
1430 void LyXText::charInserted()
1432 // Here we could call finishUndo for every 20 characters inserted.
1433 // This is from my experience how emacs does it. (Lgb)
1434 static unsigned int counter;
1444 void LyXText::prepareToPrint(ParagraphList::iterator pit,
1445 RowList::iterator const rit) const
1447 double w = rit->fill();
1448 double fill_hfill = 0;
1449 double fill_label_hfill = 0;
1450 double fill_separator = 0;
1454 pit->isRightToLeftPar(bv()->buffer()->params);
1456 x = workWidth() > 0 ? rightMargin(pit, *bv()->buffer(), *rit) : 0;
1458 x = workWidth() > 0 ? leftMargin(pit, *rit) : 0;
1460 // is there a manual margin with a manual label
1461 LyXLayout_ptr const & layout = pit->layout();
1463 if (layout->margintype == MARGIN_MANUAL
1464 && layout->labeltype == LABEL_MANUAL) {
1465 /// We might have real hfills in the label part
1466 int nlh = numberOfLabelHfills(*pit, rit);
1468 // A manual label par (e.g. List) has an auto-hfill
1469 // between the label text and the body of the
1471 // But we don't want to do this auto hfill if the par
1476 if (nlh && !pit->getLabelWidthString().empty()) {
1477 fill_label_hfill = labelFill(pit, *rit) / double(nlh);
1481 // are there any hfills in the row?
1482 int const nh = numberOfHfills(*pit, rit);
1486 fill_hfill = w / nh;
1487 // we don't have to look at the alignment if it is ALIGN_LEFT and
1488 // if the row is already larger then the permitted width as then
1489 // we force the LEFT_ALIGN'edness!
1490 } else if (int(rit->width()) < workWidth()) {
1491 // is it block, flushleft or flushright?
1492 // set x how you need it
1494 if (pit->params().align() == LYX_ALIGN_LAYOUT) {
1495 align = layout->align;
1497 align = pit->params().align();
1500 // center displayed insets
1501 InsetOld * inset = 0;
1502 if (rit->pos() < pit->size()
1503 && pit->isInset(rit->pos())
1504 && (inset = pit->getInset(rit->pos()))
1505 && (inset->display())) // || (inset->scroll() < 0)))
1506 align = (inset->lyxCode() == InsetOld::MATHMACRO_CODE)
1507 ? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
1508 // ERT insets should always be LEFT ALIGNED on screen
1509 inset = pit->inInset();
1510 if (inset && inset->owner() &&
1511 inset->owner()->lyxCode() == InsetOld::ERT_CODE)
1513 align = LYX_ALIGN_LEFT;
1517 case LYX_ALIGN_BLOCK:
1519 int const ns = numberOfSeparators(*pit, rit);
1520 RowList::iterator next_row = boost::next(rit);
1522 && next_row != pit->rows.end()
1523 && !pit->isNewline(next_row->pos() - 1)
1524 && !(pit->isInset(next_row->pos())
1525 && pit->getInset(next_row->pos())
1526 && pit->getInset(next_row->pos())->display())
1528 fill_separator = w / ns;
1529 } else if (is_rtl) {
1534 case LYX_ALIGN_RIGHT:
1537 case LYX_ALIGN_CENTER:
1543 computeBidiTables(pit, bv()->buffer(), rit);
1545 pos_type body_pos = pit->beginningOfBody();
1546 pos_type last = lastPos(*pit, rit);
1549 (body_pos - 1 > last ||
1550 !pit->isLineSeparator(body_pos - 1))) {
1551 x += font_metrics::width(layout->labelsep, getLabelFont(pit));
1552 if (body_pos - 1 <= last)
1553 x += fill_label_hfill;
1557 rit->fill_hfill(fill_hfill);
1558 rit->fill_label_hfill(fill_label_hfill);
1559 rit->fill_separator(fill_separator);
1564 // important for the screen
1567 // the cursor set functions have a special mechanism. When they
1568 // realize, that you left an empty paragraph, they will delete it.
1569 // They also delete the corresponding row
1571 void LyXText::cursorRightOneWord()
1573 ::cursorRightOneWord(cursor, ownerParagraphs());
1574 setCursor(cursor.par(), cursor.pos());
1578 // Skip initial whitespace at end of word and move cursor to *start*
1579 // of prior word, not to end of next prior word.
1580 void LyXText::cursorLeftOneWord()
1582 LyXCursor tmpcursor = cursor;
1583 ::cursorLeftOneWord(tmpcursor, ownerParagraphs());
1584 setCursor(tmpcursor.par(), tmpcursor.pos());
1588 void LyXText::selectWord(word_location loc)
1590 LyXCursor from = cursor;
1592 ::getWord(from, to, loc, ownerParagraphs());
1594 setCursor(from.par(), from.pos());
1597 selection.cursor = cursor;
1598 setCursor(to.par(), to.pos());
1603 // Select the word currently under the cursor when no
1604 // selection is currently set
1605 bool LyXText::selectWordWhenUnderCursor(word_location loc)
1607 if (!selection.set()) {
1609 return selection.set();
1615 void LyXText::acceptChange()
1617 if (!selection.set() && cursor.par()->size())
1620 if (selection.start.par() == selection.end.par()) {
1621 LyXCursor & startc = selection.start;
1622 LyXCursor & endc = selection.end;
1623 recordUndo(bv(), Undo::INSERT, startc.par());
1624 startc.par()->acceptChange(startc.pos(), endc.pos());
1627 redoParagraph(startc.par());
1628 setCursorIntern(startc.par(), 0);
1630 #warning handle multi par selection
1634 void LyXText::rejectChange()
1636 if (!selection.set() && cursor.par()->size())
1639 if (selection.start.par() == selection.end.par()) {
1640 LyXCursor & startc = selection.start;
1641 LyXCursor & endc = selection.end;
1642 recordUndo(bv(), Undo::INSERT, startc.par());
1643 startc.par()->rejectChange(startc.pos(), endc.pos());
1646 redoParagraph(startc.par());
1647 setCursorIntern(startc.par(), 0);
1649 #warning handle multi par selection
1653 // This function is only used by the spellchecker for NextWord().
1654 // It doesn't handle LYX_ACCENTs and probably never will.
1656 LyXText::selectNextWordToSpellcheck(float & value)
1658 if (the_locking_inset) {
1659 WordLangTuple word = the_locking_inset->selectNextWordToSpellcheck(bv(), value);
1660 if (!word.word().empty()) {
1661 value += float(cursor.y());
1662 value /= float(height);
1665 // we have to go on checking so move cursor to the next char
1666 if (cursor.pos() == cursor.par()->size()) {
1667 if (boost::next(cursor.par()) == ownerParagraphs().end())
1669 cursor.par(boost::next(cursor.par()));
1672 cursor.pos(cursor.pos() + 1);
1674 ParagraphList::iterator tmppit = cursor.par();
1676 // If this is not the very first word, skip rest of
1677 // current word because we are probably in the middle
1678 // of a word if there is text here.
1679 if (cursor.pos() || cursor.par() != ownerParagraphs().begin()) {
1680 while (cursor.pos() < cursor.par()->size()
1681 && cursor.par()->isLetter(cursor.pos()))
1682 cursor.pos(cursor.pos() + 1);
1685 // Now, skip until we have real text (will jump paragraphs)
1687 ParagraphList::iterator cpit = cursor.par();
1688 pos_type const cpos(cursor.pos());
1690 if (cpos == cpit->size()) {
1691 if (boost::next(cpit) != ownerParagraphs().end()) {
1692 cursor.par(boost::next(cpit));
1699 bool const is_good_inset = cpit->isInset(cpos)
1700 && cpit->getInset(cpos)->allowSpellcheck();
1702 if (!isDeletedText(*cpit, cpos)
1703 && (is_good_inset || cpit->isLetter(cpos)))
1706 cursor.pos(cpos + 1);
1709 // now check if we hit an inset so it has to be a inset containing text!
1710 if (cursor.pos() < cursor.par()->size() &&
1711 cursor.par()->isInset(cursor.pos())) {
1713 FuncRequest cmd(bv(), LFUN_INSET_EDIT, "left");
1714 cursor.par()->getInset(cursor.pos())->localDispatch(cmd);
1715 // now call us again to do the above trick
1716 // but obviously we have to start from down below ;)
1717 return bv()->text->selectNextWordToSpellcheck(value);
1720 // Update the value if we changed paragraphs
1721 if (cursor.par() != tmppit) {
1722 setCursor(cursor.par(), cursor.pos());
1723 value = float(cursor.y())/float(height);
1726 // Start the selection from here
1727 selection.cursor = cursor;
1729 string lang_code = getFont(cursor.par(), cursor.pos()).language()->code();
1730 // and find the end of the word (insets like optional hyphens
1731 // and ligature break are part of a word)
1732 while (cursor.pos() < cursor.par()->size()
1733 && cursor.par()->isLetter(cursor.pos())
1734 && !isDeletedText(*cursor.par(), cursor.pos()))
1735 cursor.pos(cursor.pos() + 1);
1737 // Finally, we copy the word to a string and return it
1739 if (selection.cursor.pos() < cursor.pos()) {
1741 for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
1742 if (!cursor.par()->isInset(i))
1743 str += cursor.par()->getChar(i);
1746 return WordLangTuple(str, lang_code);
1750 // This one is also only for the spellchecker
1751 void LyXText::selectSelectedWord()
1753 if (the_locking_inset) {
1754 the_locking_inset->selectSelectedWord(bv());
1757 // move cursor to the beginning
1758 setCursor(selection.cursor.par(), selection.cursor.pos());
1760 // set the sel cursor
1761 selection.cursor = cursor;
1763 // now find the end of the word
1764 while (cursor.pos() < cursor.par()->size()
1765 && cursor.par()->isLetter(cursor.pos()))
1766 cursor.pos(cursor.pos() + 1);
1768 setCursor(cursor.par(), cursor.pos());
1770 // finally set the selection
1775 // Delete from cursor up to the end of the current or next word.
1776 void LyXText::deleteWordForward()
1778 if (cursor.par()->empty())
1781 LyXCursor tmpcursor = cursor;
1782 selection.set(true); // to avoid deletion
1783 cursorRightOneWord();
1784 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1785 selection.cursor = cursor;
1789 // Great, CutSelection() gets rid of multiple spaces.
1790 cutSelection(true, false);
1795 // Delete from cursor to start of current or prior word.
1796 void LyXText::deleteWordBackward()
1798 if (cursor.par()->empty())
1801 LyXCursor tmpcursor = cursor;
1802 selection.set(true); // to avoid deletion
1803 cursorLeftOneWord();
1804 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1805 selection.cursor = cursor;
1808 cutSelection(true, false);
1813 // Kill to end of line.
1814 void LyXText::deleteLineForward()
1816 if (cursor.par()->empty())
1817 // Paragraph is empty, so we just go to the right
1820 LyXCursor tmpcursor = cursor;
1821 // We can't store the row over a regular setCursor
1822 // so we set it to 0 and reset it afterwards.
1823 selection.set(true); // to avoid deletion
1825 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1826 selection.cursor = cursor;
1829 // What is this test for ??? (JMarc)
1830 if (!selection.set()) {
1831 deleteWordForward();
1833 cutSelection(true, false);
1839 void LyXText::changeCase(LyXText::TextCase action)
1844 if (selection.set()) {
1845 from = selection.start;
1849 ::getWord(from, to, lyx::PARTIAL_WORD, ownerParagraphs());
1850 setCursor(to.par(), to.pos() + 1);
1853 recordUndo(bv(), Undo::ATOMIC, from.par(), to.par());
1855 pos_type pos = from.pos();
1856 ParagraphList::iterator pit = from.par();
1858 while (pit != ownerParagraphs().end() &&
1859 (pos != to.pos() || pit != to.par())) {
1860 if (pos == pit->size()) {
1865 unsigned char c = pit->getChar(pos);
1866 if (!IsInsetChar(c)) {
1868 case text_lowercase:
1871 case text_capitalization:
1873 action = text_lowercase;
1875 case text_uppercase:
1881 pit->setChar(pos, c);
1887 void LyXText::Delete()
1889 // this is a very easy implementation
1891 LyXCursor old_cursor = cursor;
1892 int const old_cur_par_id = old_cursor.par()->id();
1893 int const old_cur_par_prev_id =
1894 (old_cursor.par() != ownerParagraphs().begin() ?
1895 boost::prior(old_cursor.par())->id() : -1);
1897 // just move to the right
1900 // CHECK Look at the comment here.
1901 // This check is not very good...
1902 // The cursorRightIntern calls DeleteEmptyParagrapgMechanism
1903 // and that can very well delete the par or par->previous in
1904 // old_cursor. Will a solution where we compare paragraph id's
1906 if ((cursor.par() != ownerParagraphs().begin() ? boost::prior(cursor.par())->id() : -1)
1907 == old_cur_par_prev_id
1908 && cursor.par()->id() != old_cur_par_id) {
1909 // delete-empty-paragraph-mechanism has done it
1913 // if you had success make a backspace
1914 if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
1915 LyXCursor tmpcursor = cursor;
1916 // to make sure undo gets the right cursor position
1917 cursor = old_cursor;
1918 recordUndo(bv(), Undo::DELETE, cursor.par());
1925 void LyXText::backspace()
1927 // Get the font that is used to calculate the baselineskip
1928 pos_type lastpos = cursor.par()->size();
1930 if (cursor.pos() == 0) {
1931 // The cursor is at the beginning of a paragraph,
1932 // so the the backspace will collapse two paragraphs into one.
1934 // but it's not allowed unless it's new
1935 if (cursor.par()->isChangeEdited(0, cursor.par()->size()))
1938 // we may paste some paragraphs
1940 // is it an empty paragraph?
1943 || (lastpos == 1 && cursor.par()->isSeparator(0))) {
1944 // This is an empty paragraph and we delete it just
1945 // by moving the cursor one step
1946 // left and let the DeleteEmptyParagraphMechanism
1947 // handle the actual deletion of the paragraph.
1949 if (cursor.par() != ownerParagraphs().begin()) {
1950 ParagraphList::iterator tmppit = boost::prior(cursor.par());
1951 if (cursor.par()->layout() == tmppit->layout()
1952 && cursor.par()->getAlign() == tmppit->getAlign()) {
1953 // Inherit bottom DTD from the paragraph below.
1954 // (the one we are deleting)
1955 tmppit->params().lineBottom(cursor.par()->params().lineBottom());
1956 tmppit->params().spaceBottom(cursor.par()->params().spaceBottom());
1957 tmppit->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
1962 // the layout things can change the height of a row !
1968 if (cursor.par() != ownerParagraphs().begin()) {
1969 recordUndo(bv(), Undo::DELETE,
1970 boost::prior(cursor.par()),
1974 ParagraphList::iterator tmppit = cursor.par();
1975 // We used to do cursorLeftIntern() here, but it is
1976 // not a good idea since it triggers the auto-delete
1977 // mechanism. So we do a cursorLeftIntern()-lite,
1978 // without the dreaded mechanism. (JMarc)
1979 if (cursor.par() != ownerParagraphs().begin()) {
1980 // steps into the above paragraph.
1981 setCursorIntern(boost::prior(cursor.par()),
1982 boost::prior(cursor.par())->size(),
1986 // Pasting is not allowed, if the paragraphs have different
1987 // layout. I think it is a real bug of all other
1988 // word processors to allow it. It confuses the user.
1989 //Correction: Pasting is always allowed with standard-layout
1990 LyXTextClass const & tclass =
1991 bv()->buffer()->params.getLyXTextClass();
1993 if (cursor.par() != tmppit
1994 && (cursor.par()->layout() == tmppit->layout()
1995 || tmppit->layout() == tclass.defaultLayout())
1996 && cursor.par()->getAlign() == tmppit->getAlign()) {
1997 mergeParagraph(bv()->buffer()->params,
1998 bv()->buffer()->paragraphs, cursor.par());
2000 if (cursor.pos() && cursor.par()->isSeparator(cursor.pos() - 1))
2001 cursor.pos(cursor.pos() - 1);
2003 // the row may have changed, block, hfills etc.
2005 setCursor(cursor.par(), cursor.pos(), false);
2008 // this is the code for a normal backspace, not pasting
2010 recordUndo(bv(), Undo::DELETE, cursor.par());
2011 // We used to do cursorLeftIntern() here, but it is
2012 // not a good idea since it triggers the auto-delete
2013 // mechanism. So we do a cursorLeftIntern()-lite,
2014 // without the dreaded mechanism. (JMarc)
2015 setCursorIntern(cursor.par(), cursor.pos() - 1,
2016 false, cursor.boundary());
2017 cursor.par()->erase(cursor.pos());
2020 lastpos = cursor.par()->size();
2021 if (cursor.pos() == lastpos)
2025 setCursor(cursor.par(), cursor.pos(), false, !cursor.boundary());
2029 RowList::iterator LyXText::cursorRow() const
2031 return getRow(cursor.par(), cursor.pos());
2035 RowList::iterator LyXText::getRow(LyXCursor const & cur) const
2037 return getRow(cur.par(), cur.pos());
2042 LyXText::getRow(ParagraphList::iterator pit, pos_type pos) const
2044 RowList::iterator rit = pit->rows.begin();
2045 RowList::iterator end = pit->rows.end();
2047 #warning Why is this next thing needed? (Andre)
2050 && boost::next(rit) != end
2051 && boost::next(rit)->pos() <= pos)
2058 // returns pointer to a specified row
2060 LyXText::getRow(ParagraphList::iterator pit, pos_type pos, int & y) const
2067 ParagraphList::iterator it = ownerParagraphs().begin();
2068 for ( ; it != pit; ++it) {
2069 RowList::iterator beg = it->rows.begin();
2070 RowList::iterator end = it->rows.end();
2071 for (RowList::iterator rit = beg; rit != end; ++rit)
2075 RowList::iterator rit = pit->rows.begin();
2076 RowList::iterator end = pit->rows.end();
2079 && boost::next(rit) != end
2080 && boost::next(rit)->pos() <= pos) {
2089 // returns pointer to some fancy row 'below' specified row
2090 RowList::iterator LyXText::cursorIRow() const
2093 return getRow(cursor.par(), cursor.pos(), y);
2097 RowList::iterator LyXText::getRowNearY(int & y,
2098 ParagraphList::iterator & pit) const
2100 //lyxerr << "getRowNearY: y " << y << endl;
2101 pit = ownerParagraphs().begin();
2102 RowList::iterator rit = firstRow();
2103 RowList::iterator rend = endRow();
2105 for (; rit != rend; nextRow(pit, rit))
2109 previousRow(pit, rit);
2115 int LyXText::getDepth() const
2117 return cursor.par()->getDepth();
2121 RowList::iterator LyXText::firstRow() const
2123 return ownerParagraphs().front().rows.begin();
2127 RowList::iterator LyXText::lastRow() const
2129 return boost::prior(endRow());
2133 RowList::iterator LyXText::endRow() const
2135 return ownerParagraphs().back().rows.end();
2139 void LyXText::nextRow(ParagraphList::iterator & pit,
2140 RowList::iterator & rit) const
2143 if (rit == pit->rows.end()) {
2145 if (pit == ownerParagraphs().end())
2148 rit = pit->rows.begin();
2153 void LyXText::previousRow(ParagraphList::iterator & pit,
2154 RowList::iterator & rit) const
2156 if (rit != pit->rows.begin())
2159 Assert(pit != ownerParagraphs().begin());
2161 rit = boost::prior(pit->rows.end());
2166 bool LyXText::noRows() const
2168 return ownerParagraphs().begin()->rows.empty();