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 RowList::iterator rit = rows().begin();
86 RowList::iterator rend = rows().end();
87 for (int y = 0; rit != rend ; ++rit) {
94 int LyXText::top_y() const
96 if (anchor_row_ == rowlist_.end())
99 return anchor_row_->y() + anchor_row_offset_;
103 void LyXText::top_y(int newy)
109 anchor_row_ = rows().begin();
110 anchor_row_offset_ = newy;
114 lyxerr[Debug::GUI] << "setting top y = " << newy << endl;
117 RowList::iterator rit = getRowNearY(y);
119 if (rit == anchor_row_ && anchor_row_offset_ == newy - y) {
120 lyxerr[Debug::GUI] << "top_y to same value, skipping update" << endl;
125 anchor_row_offset_ = newy - y;
126 lyxerr[Debug::GUI] << "changing reference to row: " << &*anchor_row_
127 << " offset: " << anchor_row_offset_ << endl;
131 void LyXText::anchor_row(RowList::iterator rit)
134 anchor_row_offset_ = 0;
136 anchor_row_offset_ = old_y - top_y();
137 lyxerr[Debug::GUI] << "anchor_row(): changing reference to row: "
138 << &*anchor_row_ << " offset: "
139 << anchor_row_offset_ << endl;
143 int LyXText::workWidth() const
145 return inset_owner ? inset_owner->textWidth() : bv()->workWidth();
149 int LyXText::getRealCursorX() const
152 if (the_locking_inset && (the_locking_inset->getLyXText(bv())!= this))
153 x = the_locking_inset->getLyXText(bv())->getRealCursorX();
158 #warning FIXME This function seems to belong outside of LyxText.
159 unsigned char LyXText::transformChar(unsigned char c, Paragraph const & par,
162 if (!Encodings::is_arabic(c))
163 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
164 return c + (0xb0 - '0');
168 unsigned char const prev_char = pos > 0 ? par.getChar(pos - 1) : ' ';
169 unsigned char next_char = ' ';
171 pos_type const par_size = par.size();
173 for (pos_type i = pos + 1; i < par_size; ++i) {
174 unsigned char const par_char = par.getChar(i);
175 if (!Encodings::IsComposeChar_arabic(par_char)) {
176 next_char = par_char;
181 if (Encodings::is_arabic(next_char)) {
182 if (Encodings::is_arabic(prev_char) &&
183 !Encodings::is_arabic_special(prev_char))
184 return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
186 return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
188 if (Encodings::is_arabic(prev_char) &&
189 !Encodings::is_arabic_special(prev_char))
190 return Encodings::TransformChar(c, Encodings::FORM_FINAL);
192 return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
196 // This is the comments that some of the warnings below refers to.
197 // There are some issues in this file and I don't think they are
198 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
199 // this is a problem that has been here almost from day one and that a
200 // larger userbase with differenct access patters triggers the bad
201 // behaviour. (segfaults.) What I think happen is: In several places
202 // we store the paragraph in the current cursor and then moves the
203 // cursor. This movement of the cursor will delete paragraph at the
204 // old position if it is now empty. This will make the temporary
205 // pointer to the old cursor paragraph invalid and dangerous to use.
206 // And is some cases this will trigger a segfault. I have marked some
207 // of the cases where this happens with a warning, but I am sure there
208 // are others in this file and in text2.C. There is also a note in
209 // Delete() that you should read. In Delete I store the paragraph->id
210 // instead of a pointer to the paragraph. I am pretty sure this faulty
211 // use of temporary pointers to paragraphs that might have gotten
212 // invalidated (through a cursor movement) before they are used, are
213 // the cause of the strange crashes we get reported often.
215 // It is very tiresom to change this code, especially when it is as
216 // hard to read as it is. Help to fix all the cases where this is done
217 // would be greately appreciated.
221 int LyXText::singleWidth(ParagraphList::iterator pit, pos_type pos) const
223 if (pos >= pit->size())
226 char const c = pit->getChar(pos);
227 return singleWidth(pit, pos, c);
231 int LyXText::singleWidth(ParagraphList::iterator pit,
232 pos_type pos, char c) const
234 if (pos >= pit->size())
237 LyXFont const & font = getFont(pit, pos);
239 // The most common case is handled first (Asger)
240 if (IsPrintable(c)) {
241 if (font.language()->RightToLeft()) {
242 if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
243 lyxrc.font_norm_type == LyXRC::ISO_10646_1)
244 && font.language()->lang() == "arabic") {
245 if (Encodings::IsComposeChar_arabic(c))
248 c = transformChar(c, *pit, pos);
249 } else if (font.language()->lang() == "hebrew" &&
250 Encodings::IsComposeChar_hebrew(c))
253 return font_metrics::width(c, font);
256 if (c == Paragraph::META_INSET) {
257 InsetOld * tmpinset = pit->getInset(pos);
259 if (tmpinset->lyxCode() == InsetOld::HFILL_CODE) {
260 // Because of the representation as vertical lines
264 #warning enabling this fixes the 'insets of width 0 on load' problem
265 // this IS needed otherwise on initialitation we don't get the fill
266 // of the row right (ONLY on initialization if we read a file!)
267 // should be changed! (Jug 20011204)
268 //tmpinset->update(bv());
270 MetricsInfo mi(bv(), font, workWidth());
271 tmpinset->metrics(mi, dim);
274 return tmpinset->width();
280 if (IsSeparatorChar(c))
282 return font_metrics::width(c, font);
286 lyx::pos_type LyXText::log2vis(lyx::pos_type pos) const
288 if (bidi_start == -1)
291 return log2vis_list[pos - bidi_start];
295 lyx::pos_type LyXText::vis2log(lyx::pos_type pos) const
297 if (bidi_start == -1)
300 return vis2log_list[pos - bidi_start];
304 lyx::pos_type LyXText::bidi_level(lyx::pos_type pos) const
306 if (bidi_start == -1)
309 return bidi_levels[pos - bidi_start];
313 bool LyXText::bidi_InRange(lyx::pos_type pos) const
315 return bidi_start == -1 ||
316 (bidi_start <= pos && pos <= bidi_end);
320 void LyXText::computeBidiTables(ParagraphList::iterator row_par,
321 Buffer const * buf, RowList::iterator row) const
323 bidi_same_direction = true;
324 if (!lyxrc.rtl_support) {
329 InsetOld * inset = row_par->inInset();
330 if (inset && inset->owner() &&
331 inset->owner()->lyxCode() == InsetOld::ERT_CODE) {
336 bidi_start = row->pos();
337 bidi_end = lastPrintablePos(*this, row_par, row);
339 if (bidi_start > bidi_end) {
344 if (bidi_end + 2 - bidi_start >
345 static_cast<pos_type>(log2vis_list.size())) {
347 (bidi_end + 2 - bidi_start < 500) ?
348 500 : 2 * (bidi_end + 2 - bidi_start);
349 log2vis_list.resize(new_size);
350 vis2log_list.resize(new_size);
351 bidi_levels.resize(new_size);
354 vis2log_list[bidi_end + 1 - bidi_start] = -1;
355 log2vis_list[bidi_end + 1 - bidi_start] = -1;
359 row_par->isRightToLeftPar(buf->params);
363 pos_type const body_pos = row_par->beginningOfBody();
365 for (pos_type lpos = bidi_start; lpos <= bidi_end; ++lpos) {
366 bool is_space = row_par->isLineSeparator(lpos);
368 (is_space && lpos + 1 <= bidi_end &&
369 !row_par->isLineSeparator(lpos + 1) &&
370 !row_par->isNewline(lpos + 1))
372 LyXFont font = row_par->getFontSettings(buf->params, pos);
373 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
374 font.number() == LyXFont::ON &&
375 row_par->getFontSettings(buf->params, lpos - 1).number()
377 font = row_par->getFontSettings(buf->params, lpos);
382 bool new_rtl = font.isVisibleRightToLeft();
383 bool new_rtl0 = font.isRightToLeft();
386 if (lpos == body_pos - 1
387 && row->pos() < body_pos - 1
389 new_level = (rtl_par) ? 1 : 0;
390 new_rtl = new_rtl0 = rtl_par;
392 new_level = (new_rtl) ? 1 : 2;
394 new_level = (rtl_par) ? 2 : 0;
396 if (is_space && new_level >= level) {
402 int new_level2 = new_level;
404 if (level == new_level && rtl0 != new_rtl0) {
406 log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
407 } else if (level < new_level) {
408 log2vis_list[lpos - bidi_start] = (rtl) ? -1 : 1;
409 if (new_level > rtl_par)
410 bidi_same_direction = false;
412 log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
415 bidi_levels[lpos - bidi_start] = new_level;
417 while (level > new_level2) {
418 pos_type old_lpos = stack[--level];
419 int delta = lpos - old_lpos - 1;
422 log2vis_list[lpos - bidi_start] += delta;
423 log2vis_list[old_lpos - bidi_start] += delta;
425 while (level < new_level)
426 stack[level++] = lpos;
430 pos_type const old_lpos = stack[--level];
431 int delta = bidi_end - old_lpos;
434 log2vis_list[old_lpos - bidi_start] += delta;
437 pos_type vpos = bidi_start - 1;
438 for (pos_type lpos = bidi_start;
439 lpos <= bidi_end; ++lpos) {
440 vpos += log2vis_list[lpos - bidi_start];
441 vis2log_list[vpos - bidi_start] = lpos;
442 log2vis_list[lpos - bidi_start] = vpos;
447 // This method requires a previous call to ComputeBidiTables()
448 bool LyXText::isBoundary(Buffer const * buf, Paragraph const & par,
451 if (!lyxrc.rtl_support || pos == 0)
454 if (!bidi_InRange(pos - 1)) {
455 /// This can happen if pos is the first char of a row.
456 /// Returning false in this case is incorrect!
460 bool const rtl = bidi_level(pos - 1) % 2;
461 bool const rtl2 = bidi_InRange(pos)
462 ? bidi_level(pos) % 2
463 : par.isRightToLeftPar(buf->params);
468 bool LyXText::isBoundary(Buffer const * buf, Paragraph const & par,
469 pos_type pos, LyXFont const & font) const
471 if (!lyxrc.rtl_support)
472 return false; // This is just for speedup
474 bool const rtl = font.isVisibleRightToLeft();
475 bool const rtl2 = bidi_InRange(pos)
476 ? bidi_level(pos) % 2
477 : par.isRightToLeftPar(buf->params);
482 int LyXText::leftMargin(ParagraphList::iterator pit, Row const & row) const
486 if (row.pos() < pit->size())
487 if (pit->getChar(row.pos()) == Paragraph::META_INSET &&
488 (ins = pit->getInset(row.pos())) &&
489 (ins->needFullRow() || ins->display()))
492 LyXTextClass const & tclass =
493 bv()->buffer()->params.getLyXTextClass();
494 LyXLayout_ptr const & layout = pit->layout();
496 string parindent = layout->parindent;
500 x += font_metrics::signedWidth(tclass.leftmargin(), tclass.defaultfont());
502 // this is the way, LyX handles the LaTeX-Environments.
503 // I have had this idea very late, so it seems to be a
504 // later added hack and this is true
505 if (!pit->getDepth()) {
506 if (pit->layout() == tclass.defaultLayout()) {
507 // find the previous same level paragraph
508 if (pit != ownerParagraphs().begin()) {
509 ParagraphList::iterator newpit =
510 depthHook(pit, ownerParagraphs(),
513 newpit->layout()->nextnoindent)
518 // find the next level paragraph
520 ParagraphList::iterator newpar = outerHook(pit,
523 // make a corresponding row. Needed to call leftMargin()
525 // check wether it is a sufficent paragraph
526 if (newpar != ownerParagraphs().end() &&
527 newpar->layout()->isEnvironment()) {
528 x = leftMargin(newpar, Row(newpar->size()));
531 if (newpar != ownerParagraphs().end() &&
532 pit->layout() == tclass.defaultLayout()) {
533 if (newpar->params().noindent())
536 parindent = newpar->layout()->parindent;
542 LyXFont const labelfont = getLabelFont(pit);
543 switch (layout->margintype) {
545 if (!layout->leftmargin.empty()) {
546 x += font_metrics::signedWidth(layout->leftmargin,
547 tclass.defaultfont());
549 if (!pit->getLabelstring().empty()) {
550 x += font_metrics::signedWidth(layout->labelindent,
552 x += font_metrics::width(pit->getLabelstring(),
554 x += font_metrics::width(layout->labelsep, labelfont);
558 x += font_metrics::signedWidth(layout->labelindent, labelfont);
559 // The width of an empty par, even with manual label, should be 0
560 if (!pit->empty() && row.pos() >= pit->beginningOfBody()) {
561 if (!pit->getLabelWidthString().empty()) {
562 x += font_metrics::width(pit->getLabelWidthString(),
564 x += font_metrics::width(layout->labelsep, labelfont);
569 x += font_metrics::signedWidth(layout->leftmargin, tclass.defaultfont()) * 4
570 / (pit->getDepth() + 4);
572 case MARGIN_FIRST_DYNAMIC:
573 if (layout->labeltype == LABEL_MANUAL) {
574 if (row.pos() >= pit->beginningOfBody()) {
575 x += font_metrics::signedWidth(layout->leftmargin,
578 x += font_metrics::signedWidth(layout->labelindent,
582 // Special case to fix problems with
584 || (layout->labeltype == LABEL_STATIC
585 && layout->latextype == LATEX_ENVIRONMENT
586 && !isFirstInSequence(pit, ownerParagraphs()))) {
587 x += font_metrics::signedWidth(layout->leftmargin,
589 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
590 && layout->labeltype != LABEL_BIBLIO
591 && layout->labeltype !=
592 LABEL_CENTERED_TOP_ENVIRONMENT) {
593 x += font_metrics::signedWidth(layout->labelindent,
595 x += font_metrics::width(layout->labelsep, labelfont);
596 x += font_metrics::width(pit->getLabelstring(),
601 case MARGIN_RIGHT_ADDRESS_BOX:
603 // ok, a terrible hack. The left margin depends on the widest
604 // row in this paragraph. Do not care about footnotes, they
605 // are *NOT* allowed in the LaTeX realisation of this layout.
607 // find the first row of this paragraph
608 RowList::iterator tmprit = rowlist_.begin();
609 while (tmprit != rowlist_.end()
610 && getPar(tmprit) != pit)
613 int minfill = tmprit->fill();
614 while (boost::next(tmprit) != rowlist_.end() &&
615 getPar(boost::next(tmprit)) == pit) {
617 if (tmprit->fill() < minfill)
618 minfill = tmprit->fill();
621 x += font_metrics::signedWidth(layout->leftmargin,
622 tclass.defaultfont());
628 if (workWidth() > 0 && !pit->params().leftIndent().zero()) {
629 LyXLength const len = pit->params().leftIndent();
630 int const tw = inset_owner ?
631 inset_owner->latexTextWidth(bv()) : workWidth();
632 x += len.inPixels(tw);
637 if (pit->params().align() == LYX_ALIGN_LAYOUT)
638 align = layout->align;
640 align = pit->params().align();
642 // set the correct parindent
643 if (row.pos() == 0) {
644 if ((layout->labeltype == LABEL_NO_LABEL
645 || layout->labeltype == LABEL_TOP_ENVIRONMENT
646 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
647 || (layout->labeltype == LABEL_STATIC
648 && layout->latextype == LATEX_ENVIRONMENT
649 && !isFirstInSequence(pit, ownerParagraphs())))
650 && align == LYX_ALIGN_BLOCK
651 && !pit->params().noindent()
652 // in tabulars and ert paragraphs are never indented!
653 && (!pit->inInset() || !pit->inInset()->owner() ||
654 (pit->inInset()->owner()->lyxCode() != InsetOld::TABULAR_CODE &&
655 pit->inInset()->owner()->lyxCode() != InsetOld::ERT_CODE))
656 && (pit->layout() != tclass.defaultLayout() ||
657 bv()->buffer()->params.paragraph_separation ==
658 BufferParams::PARSEP_INDENT)) {
659 x += font_metrics::signedWidth(parindent,
660 tclass.defaultfont());
661 } else if (layout->labeltype == LABEL_BIBLIO) {
662 // ale970405 Right width for bibitems
663 x += bibitemMaxWidth(bv(), tclass.defaultfont());
671 int LyXText::rightMargin(ParagraphList::iterator pit,
672 Buffer const & buf, Row const & row) const
676 if (row.pos() < pit->size())
677 if ((pit->getChar(row.pos()) == Paragraph::META_INSET) &&
678 (ins = pit->getInset(row.pos())) &&
679 (ins->needFullRow() || ins->display()))
682 LyXTextClass const & tclass = buf.params.getLyXTextClass();
683 LyXLayout_ptr const & layout = pit->layout();
686 + font_metrics::signedWidth(tclass.rightmargin(),
687 tclass.defaultfont());
688 + font_metrics::signedWidth(layout->rightmargin,
689 tclass.defaultfont())
690 * 4 / (pit->getDepth() + 4);
694 int LyXText::labelEnd(ParagraphList::iterator pit, Row const & row) const
696 if (pit->layout()->margintype == MARGIN_MANUAL) {
698 tmprow.pos(pit->size());
699 // return the beginning of the body
700 return leftMargin(pit, tmprow);
703 // LabelEnd is only needed if the layout
704 // fills a flushleft label.
711 // this needs special handling - only newlines count as a break point
712 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
714 for (; i < par.size(); ++i) {
715 if (par.isNewline(i))
725 pos_type LyXText::rowBreakPoint(ParagraphList::iterator pit,
726 Row const & row) const
728 // maximum pixel width of a row.
729 int width = workWidth() - rightMargin(pit, *bv()->buffer(), row);
731 // inset->textWidth() returns -1 via workWidth(),
736 LyXLayout_ptr const & layout = pit->layout();
738 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
739 return addressBreakPoint(row.pos(), *pit);
741 pos_type const pos = row.pos();
742 pos_type const body_pos = pit->beginningOfBody();
743 pos_type const last = pit->size();
744 pos_type point = last;
749 // Now we iterate through until we reach the right margin
750 // or the end of the par, then choose the possible break
753 int const left = leftMargin(pit, row);
756 // pixel width since last breakpoint
758 bool fullrow = false;
762 // We re-use the font resolution for the entire font span when possible
763 LyXFont font = getFont(pit, i);
764 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
766 for (; i < last; ++i) {
767 if (pit->isNewline(i)) {
772 char const c = pit->getChar(i);
776 // add the auto-hfill from label end to the body
777 if (body_pos && i == body_pos) {
778 thiswidth = font_metrics::width(layout->labelsep, getLabelFont(pit));
779 if (pit->isLineSeparator(i - 1))
780 thiswidth -= singleWidth(pit, i - 1);
781 int left_margin = labelEnd(pit, row);
782 if (thiswidth + x < left_margin)
783 thiswidth = left_margin - x;
784 thiswidth += singleWidth(pit, i, c);
786 // Manual inlined optimised version of common case of "thiswidth = singleWidth(pit, i, c);"
787 if (IsPrintable(c)) {
788 if (pos > endPosOfFontSpan) {
789 // We need to get the next font
790 font = getFont(pit, i);
791 endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
793 if (! font.language()->RightToLeft()) {
794 thiswidth = font_metrics::width(c, font);
796 // Fall-back to normal case
797 thiswidth = singleWidth(pit, i, c);
798 // And flush font cache
799 endPosOfFontSpan = 0;
802 // Fall-back to normal case
803 thiswidth = singleWidth(pit, i, c);
804 // And flush font cache
805 endPosOfFontSpan = 0;
810 chunkwidth += thiswidth;
812 InsetOld * in = pit->isInset(i) ? pit->getInset(i) : 0;
813 fullrow = in && (in->display() || in->needFullRow());
815 // break before a character that will fall off
816 // the right of the row
818 // if no break before or we are at an inset
819 // that will take up a row, break here
820 if (point == last || fullrow || chunkwidth >= (width - left)) {
829 if (!in || in->isChar()) {
830 // some insets are line separators too
831 if (pit->isLineSeparator(i)) {
841 // full row insets start at a new row
843 if (pos < last - 1) {
845 if (pit->isLineSeparator(i + 1))
848 // to avoid extra rows
858 if (point == last && x >= width) {
859 // didn't find one, break at the point we reached the edge
861 } else if (i == last && x < width) {
862 // found one, but we fell off the end of the par, so prefer
867 // manual labels cannot be broken in LaTeX. But we
868 // want to make our on-screen rendering of footnotes
870 if (!fullrow && body_pos && point < body_pos)
871 point = body_pos - 1;
877 // returns the minimum space a row needs on the screen in pixel
878 int LyXText::fill(RowList::iterator row, int paper_width) const
884 // get the pure distance
885 ParagraphList::iterator pit = getPar(row);
886 pos_type const last = lastPrintablePos(*this, pit, row);
888 LyXLayout_ptr const & layout = pit->layout();
890 // special handling of the right address boxes
891 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
892 int const tmpfill = row->fill();
893 row->fill(0); // the minfill in MarginLeft()
894 w = leftMargin(pit, *row);
897 w = leftMargin(pit, *row);
899 pos_type const body_pos = pit->beginningOfBody();
900 pos_type i = row->pos();
902 if (! pit->empty() && i <= last) {
903 // We re-use the font resolution for the entire span when possible
904 LyXFont font = getFont(pit, i);
905 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
907 if (body_pos > 0 && i == body_pos) {
908 w += font_metrics::width(layout->labelsep, getLabelFont(pit));
909 if (pit->isLineSeparator(i - 1))
910 w -= singleWidth(pit, i - 1);
911 int left_margin = labelEnd(pit, *row);
915 { // Manual inlined an optimised version of the common case of "w += singleWidth(pit, i);"
916 char const c = pit->getChar(i);
918 if (IsPrintable(c)) {
919 if (i > endPosOfFontSpan) {
920 // We need to get the next font
921 font = getFont(pit, i);
922 endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
924 if (!font.language()->RightToLeft()) {
925 w += font_metrics::width(c, font);
927 // Fall-back to the normal case
928 w += singleWidth(pit, i, c);
929 // And flush font cache
930 endPosOfFontSpan = 0;
933 // Fall-back to the normal case
934 w += singleWidth(pit, i, c);
935 // And flush font cache
936 endPosOfFontSpan = 0;
942 if (body_pos > 0 && body_pos > last) {
943 w += font_metrics::width(layout->labelsep, getLabelFont(pit));
944 if (last >= 0 && pit->isLineSeparator(last))
945 w -= singleWidth(pit, last);
946 int const left_margin = labelEnd(pit, *row);
951 int const fill = paper_width - w - rightMargin(pit, *bv()->buffer(), *row);
953 // If this case happens, it means that our calculation
954 // of the widths of the chars when we do rowBreakPoint()
955 // went wrong for some reason. Typically in list bodies.
956 // Things just about hobble on anyway, though you'll end
957 // up with a "fill_separator" less than zero, which corresponds
958 // to inter-word spacing being too small. Hopefully this problem
959 // will die when the label hacks die.
960 if (lyxerr.debugging() && fill < 0) {
961 lyxerr[Debug::GUI] << "Eek, fill() was < 0: " << fill
962 << " w " << w << " paper_width " << paper_width
963 << " right margin " << rightMargin(pit, *bv()->buffer(), *row) << endl;
969 // returns the minimum space a manual label needs on the screen in pixel
970 int LyXText::labelFill(ParagraphList::iterator pit, Row const & row) const
972 pos_type last = pit->beginningOfBody();
976 // -1 because a label ends either with a space that is in the label,
977 // or with the beginning of a footnote that is outside the label.
980 // a separator at this end does not count
981 if (pit->isLineSeparator(last))
985 pos_type i = row.pos();
987 w += singleWidth(pit, i);
992 string const & labwidstr = pit->params().labelWidthString();
993 if (!labwidstr.empty()) {
994 LyXFont const labfont = getLabelFont(pit);
995 int const labwidth = font_metrics::width(labwidstr, labfont);
996 fill = max(labwidth - w, 0);
1003 LColor::color LyXText::backgroundColor() const
1006 return inset_owner->backgroundColor();
1008 return LColor::background;
1012 void LyXText::setHeightOfRow(RowList::iterator rit)
1014 Assert(rit != rows().end());
1016 // get the maximum ascent and the maximum descent
1017 double layoutasc = 0;
1018 double layoutdesc = 0;
1021 // ok, let us initialize the maxasc and maxdesc value.
1022 // Only the fontsize count. The other properties
1023 // are taken from the layoutfont. Nicer on the screen :)
1024 ParagraphList::iterator pit = getPar(rit);
1026 LyXLayout_ptr const & layout = pit->layout();
1028 // as max get the first character of this row then it can increase but not
1029 // decrease the height. Just some point to start with so we don't have to
1030 // do the assignment below too often.
1031 LyXFont font = getFont(pit, rit->pos());
1032 LyXFont::FONT_SIZE const tmpsize = font.size();
1033 font = getLayoutFont(pit);
1034 LyXFont::FONT_SIZE const size = font.size();
1035 font.setSize(tmpsize);
1037 LyXFont labelfont = getLabelFont(pit);
1039 double spacing_val = 1.0;
1040 if (!pit->params().spacing().isDefault())
1041 spacing_val = pit->params().spacing().getValue();
1043 spacing_val = bv()->buffer()->params.spacing.getValue();
1044 //lyxerr << "spacing_val = " << spacing_val << endl;
1046 int maxasc = int(font_metrics::maxAscent(font) *
1047 layout->spacing.getValue() * spacing_val);
1048 int maxdesc = int(font_metrics::maxDescent(font) *
1049 layout->spacing.getValue() * spacing_val);
1051 pos_type const pos_end = lastPos(*this, pit, rit);
1055 if (!pit->empty()) {
1056 // We re-use the font resolution for the entire font span when possible
1057 LyXFont font = getFont(pit, rit->pos());
1058 lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(rit->pos());
1061 Paragraph const & par = *pit;
1063 // Check if any insets are larger
1064 for (pos_type pos = rit->pos(); pos <= pos_end; ++pos) {
1065 // Manual inlined optimised version of common case of
1066 // "maxwidth += singleWidth(pit, pos);"
1067 char const c = par.getChar(pos);
1069 if (IsPrintable(c)) {
1070 if (pos > endPosOfFontSpan) {
1071 // We need to get the next font
1072 font = getFont(pit, pos);
1073 endPosOfFontSpan = par.getEndPosOfFontSpan(pos);
1075 if (! font.language()->RightToLeft()) {
1076 maxwidth += font_metrics::width(c, font);
1078 // Fall-back to normal case
1079 maxwidth += singleWidth(pit, pos, c);
1080 // And flush font cache
1081 endPosOfFontSpan = 0;
1084 // Special handling of insets - are any larger?
1085 if (par.isInset(pos)) {
1086 InsetOld const * tmpinset = par.getInset(pos);
1088 #if 1 // this is needed for deep update on initialitation
1089 #warning inset->update FIXME
1090 //tmpinset->update(bv());
1091 LyXFont const tmpfont = getFont(pit, pos);
1093 MetricsInfo mi(bv(), tmpfont, workWidth());
1094 tmpinset->metrics(mi, dim);
1095 maxwidth += dim.wid;
1096 maxasc = max(maxasc, dim.asc);
1097 maxdesc = max(maxdesc, dim.des);
1099 maxwidth += tmpinset->width();
1100 maxasc = max(maxasc, tmpinset->ascent());
1101 maxdesc = max(maxdesc, tmpinset->descent());
1105 // Fall-back to normal case
1106 maxwidth += singleWidth(pit, pos, c);
1107 // And flush font cache
1108 endPosOfFontSpan = 0;
1114 // Check if any custom fonts are larger (Asger)
1115 // This is not completely correct, but we can live with the small,
1116 // cosmetic error for now.
1117 LyXFont::FONT_SIZE maxsize =
1118 pit->highestFontInRange(rit->pos(), pos_end, size);
1119 if (maxsize > font.size()) {
1120 font.setSize(maxsize);
1121 maxasc = max(maxasc, font_metrics::maxAscent(font));
1122 maxdesc = max(maxdesc, font_metrics::maxDescent(font));
1125 // This is nicer with box insets:
1129 rit->ascent_of_text(maxasc);
1131 // is it a top line?
1134 // some parksips VERY EASY IMPLEMENTATION
1135 if (bv()->buffer()->params.paragraph_separation ==
1136 BufferParams::PARSEP_SKIP)
1138 if (layout->isParagraph()
1139 && pit->getDepth() == 0
1140 && pit != ownerParagraphs().begin())
1142 maxasc += bv()->buffer()->params.getDefSkip().inPixels(*bv());
1143 } else if (pit != ownerParagraphs().begin() &&
1144 boost::prior(pit)->layout()->isParagraph() &&
1145 boost::prior(pit)->getDepth() == 0)
1147 // is it right to use defskip here too? (AS)
1148 maxasc += bv()->buffer()->params.getDefSkip().inPixels(*bv());
1153 if (pit == ownerParagraphs().begin() && !isInInset())
1154 maxasc += PAPER_MARGIN;
1156 // add the vertical spaces, that the user added
1157 maxasc += getLengthMarkerHeight(*bv(), pit->params().spaceTop());
1159 // do not forget the DTP-lines!
1160 // there height depends on the font of the nearest character
1161 if (pit->params().lineTop())
1163 maxasc += 2 * font_metrics::ascent('x', getFont(pit, 0));
1164 // and now the pagebreaks
1165 if (pit->params().pagebreakTop())
1166 maxasc += 3 * defaultRowHeight();
1168 if (pit->params().startOfAppendix())
1169 maxasc += 3 * defaultRowHeight();
1171 // This is special code for the chapter, since the label of this
1172 // layout is printed in an extra row
1173 if (layout->labeltype == LABEL_COUNTER_CHAPTER
1174 && bv()->buffer()->params.secnumdepth >= 0)
1176 float spacing_val = 1.0;
1177 if (!pit->params().spacing().isDefault()) {
1178 spacing_val = pit->params().spacing().getValue();
1180 spacing_val = bv()->buffer()->params.spacing.getValue();
1183 labeladdon = int(font_metrics::maxDescent(labelfont) *
1184 layout->spacing.getValue() *
1186 + int(font_metrics::maxAscent(labelfont) *
1187 layout->spacing.getValue() *
1191 // special code for the top label
1192 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
1193 || layout->labeltype == LABEL_BIBLIO
1194 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1195 && isFirstInSequence(pit, ownerParagraphs())
1196 && !pit->getLabelstring().empty())
1198 float spacing_val = 1.0;
1199 if (!pit->params().spacing().isDefault()) {
1200 spacing_val = pit->params().spacing().getValue();
1202 spacing_val = bv()->buffer()->params.spacing.getValue();
1206 (font_metrics::maxAscent(labelfont) +
1207 font_metrics::maxDescent(labelfont)) *
1208 layout->spacing.getValue() *
1210 + layout->topsep * defaultRowHeight()
1211 + layout->labelbottomsep * defaultRowHeight());
1214 // And now the layout spaces, for example before and after
1215 // a section, or between the items of a itemize or enumerate
1218 if (!pit->params().pagebreakTop()) {
1219 ParagraphList::iterator prev =
1220 depthHook(pit, ownerParagraphs(),
1222 if (prev != pit && prev->layout() == layout &&
1223 prev->getDepth() == pit->getDepth() &&
1224 prev->getLabelWidthString() == pit->getLabelWidthString())
1226 layoutasc = (layout->itemsep * defaultRowHeight());
1227 } else if (rit != rows().begin()) {
1228 tmptop = layout->topsep;
1230 if (boost::prior(pit)->getDepth() >= pit->getDepth()) {
1231 tmptop -= getPar(boost::prior(rit))->layout()->bottomsep;
1235 layoutasc = (tmptop * defaultRowHeight());
1236 } else if (pit->params().lineTop()) {
1237 tmptop = layout->topsep;
1240 layoutasc = (tmptop * defaultRowHeight());
1243 prev = outerHook(pit, ownerParagraphs());
1244 if (prev != ownerParagraphs().end()) {
1245 maxasc += int(prev->layout()->parsep * defaultRowHeight());
1246 } else if (pit != ownerParagraphs().begin()) {
1247 ParagraphList::iterator prior_pit = boost::prior(pit);
1248 if (prior_pit->getDepth() != 0 ||
1249 prior_pit->layout() == layout) {
1250 maxasc += int(layout->parsep * defaultRowHeight());
1256 // is it a bottom line?
1257 RowList::iterator next_rit = boost::next(rit);
1258 if (next_rit == rows().end() || getPar(next_rit) != pit) {
1259 // the bottom margin
1260 ParagraphList::iterator nextpit = boost::next(pit);
1261 if (nextpit == ownerParagraphs().end() &&
1263 maxdesc += PAPER_MARGIN;
1265 // add the vertical spaces, that the user added
1266 maxdesc += getLengthMarkerHeight(*bv(), pit->params().spaceBottom());
1268 // do not forget the DTP-lines!
1269 // there height depends on the font of the nearest character
1270 if (pit->params().lineBottom())
1271 maxdesc += 2 * font_metrics::ascent('x',
1272 getFont(pit, max(pos_type(0), pit->size() - 1)));
1274 // and now the pagebreaks
1275 if (pit->params().pagebreakBottom())
1276 maxdesc += 3 * defaultRowHeight();
1278 // and now the layout spaces, for example before and after
1279 // a section, or between the items of a itemize or enumerate
1281 if (!pit->params().pagebreakBottom()
1282 && nextpit != ownerParagraphs().end()) {
1283 ParagraphList::iterator comparepit = pit;
1287 if (comparepit->getDepth() > nextpit->getDepth()) {
1288 usual = (comparepit->layout()->bottomsep * defaultRowHeight());
1289 comparepit = depthHook(comparepit, ownerParagraphs(), nextpit->getDepth());
1290 if (comparepit->layout()!= nextpit->layout()
1291 || nextpit->getLabelWidthString() !=
1292 comparepit->getLabelWidthString())
1294 unusual = (comparepit->layout()->bottomsep * defaultRowHeight());
1296 if (unusual > usual)
1297 layoutdesc = unusual;
1300 } else if (comparepit->getDepth() == nextpit->getDepth()) {
1302 if (comparepit->layout() != nextpit->layout()
1303 || nextpit->getLabelWidthString() !=
1304 comparepit->getLabelWidthString())
1305 layoutdesc = int(comparepit->layout()->bottomsep * defaultRowHeight());
1310 // incalculate the layout spaces
1311 maxasc += int(layoutasc * 2 / (2 + pit->getDepth()));
1312 maxdesc += int(layoutdesc * 2 / (2 + pit->getDepth()));
1314 // calculate the new height of the text
1315 height -= rit->height();
1317 rit->height(maxasc + maxdesc + labeladdon);
1318 rit->baseline(maxasc + labeladdon);
1320 height += rit->height();
1322 rit->top_of_text(rit->baseline() - font_metrics::maxAscent(font));
1325 if (layout->margintype != MARGIN_RIGHT_ADDRESS_BOX) {
1327 rit->width(maxwidth);
1329 prepareToPrint(pit, rit, x, dummy, dummy, dummy, false);
1331 rit->width(int(maxwidth + x));
1333 width = max(0, workWidth());
1334 RowList::iterator it = rows().begin();
1335 RowList::iterator end = rows().end();
1336 for (; it != end; ++it)
1337 if (it->width() > width)
1338 width = it->width();
1343 void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
1345 // allow only if at start or end, or all previous is new text
1346 if (cursor.pos() && cursor.pos() != cursor.par()->size()
1347 && cursor.par()->isChangeEdited(0, cursor.pos()))
1350 LyXTextClass const & tclass =
1351 bv()->buffer()->params.getLyXTextClass();
1352 LyXLayout_ptr const & layout = cursor.par()->layout();
1354 // this is only allowed, if the current paragraph is not empty or caption
1355 // and if it has not the keepempty flag active
1356 if (cursor.par()->empty() && !cursor.par()->allowEmpty()
1357 && layout->labeltype != LABEL_SENSITIVE)
1360 recordUndo(bv(), Undo::ATOMIC, cursor.par());
1362 // Always break behind a space
1364 // It is better to erase the space (Dekel)
1365 if (cursor.pos() < cursor.par()->size()
1366 && cursor.par()->isLineSeparator(cursor.pos()))
1367 cursor.par()->erase(cursor.pos());
1369 // break the paragraph
1373 keep_layout = layout->isEnvironment();
1375 // we need to set this before we insert the paragraph. IMO the
1376 // breakParagraph call should return a bool if it inserts the
1377 // paragraph before or behind and we should react on that one
1378 // but we can fix this in 1.3.0 (Jug 20020509)
1379 bool const isempty = (cursor.par()->allowEmpty() && cursor.par()->empty());
1380 ::breakParagraph(bv()->buffer()->params, paragraphs, cursor.par(),
1381 cursor.pos(), keep_layout);
1383 // well this is the caption hack since one caption is really enough
1384 if (layout->labeltype == LABEL_SENSITIVE) {
1386 // set to standard-layout
1387 cursor.par()->applyLayout(tclass.defaultLayout());
1389 // set to standard-layout
1390 boost::next(cursor.par())->applyLayout(tclass.defaultLayout());
1393 // if the cursor is at the beginning of a row without prior newline,
1395 // This touches only the screen-update. Otherwise we would may have
1396 // an empty row on the screen
1397 if (cursor.pos() && cursorRow()->pos() == cursor.pos()
1398 && !cursor.par()->isNewline(cursor.pos() - 1))
1403 removeParagraph(cursorRow());
1405 #warning Trouble Point! (Lgb)
1406 // When ::breakParagraph is called from within an inset we must
1407 // ensure that the correct ParagraphList is used. Today that is not
1408 // the case and the Buffer::paragraphs is used. Not good. (Lgb)
1409 ParagraphList::iterator next_par = boost::next(cursor.par());
1411 while (!next_par->empty() && next_par->isNewline(0))
1414 insertParagraph(next_par, boost::next(cursorRow()));
1417 // This check is necessary. Otherwise the new empty paragraph will
1418 // be deleted automatically. And it is more friendly for the user!
1419 if (cursor.pos() || isempty)
1420 setCursor(next_par, 0);
1422 setCursor(cursor.par(), 0);
1424 redoParagraph(cursor.par());
1428 // convenience function
1429 void LyXText::redoParagraph()
1432 redoParagraph(cursor.par());
1433 setCursorIntern(cursor.par(), cursor.pos());
1437 // insert a character, moves all the following breaks in the
1438 // same Paragraph one to the right and make a rebreak
1439 void LyXText::insertChar(char c)
1441 recordUndo(bv(), Undo::INSERT, cursor.par());
1443 // When the free-spacing option is set for the current layout,
1444 // disable the double-space checking
1446 bool const freeSpacing = cursor.par()->layout()->free_spacing ||
1447 cursor.par()->isFreeSpacing();
1449 if (lyxrc.auto_number) {
1450 static string const number_operators = "+-/*";
1451 static string const number_unary_operators = "+-";
1452 static string const number_seperators = ".,:";
1454 if (current_font.number() == LyXFont::ON) {
1455 if (!IsDigit(c) && !contains(number_operators, c) &&
1456 !(contains(number_seperators, c) &&
1457 cursor.pos() >= 1 &&
1458 cursor.pos() < cursor.par()->size() &&
1459 getFont(cursor.par(), cursor.pos()).number() == LyXFont::ON &&
1460 getFont(cursor.par(), cursor.pos() - 1).number() == LyXFont::ON)
1462 number(bv()); // Set current_font.number to OFF
1463 } else if (IsDigit(c) &&
1464 real_current_font.isVisibleRightToLeft()) {
1465 number(bv()); // Set current_font.number to ON
1467 if (cursor.pos() > 0) {
1468 char const c = cursor.par()->getChar(cursor.pos() - 1);
1469 if (contains(number_unary_operators, c) &&
1470 (cursor.pos() == 1 ||
1471 cursor.par()->isSeparator(cursor.pos() - 2) ||
1472 cursor.par()->isNewline(cursor.pos() - 2))
1478 } else if (contains(number_seperators, c) &&
1479 cursor.pos() >= 2 &&
1482 cursor.pos() - 2).number() == LyXFont::ON) {
1493 // First check, if there will be two blanks together or a blank at
1494 // the beginning of a paragraph.
1495 // I decided to handle blanks like normal characters, the main
1496 // difference are the special checks when calculating the row.fill
1497 // (blank does not count at the end of a row) and the check here
1499 // The bug is triggered when we type in a description environment:
1500 // The current_font is not changed when we go from label to main text
1501 // and it should (along with realtmpfont) when we type the space.
1502 // CHECK There is a bug here! (Asger)
1504 // store the current font. This is because of the use of cursor
1505 // movements. The moving cursor would refresh the current font
1506 LyXFont realtmpfont = real_current_font;
1507 LyXFont rawtmpfont = current_font;
1509 if (!freeSpacing && IsLineSeparatorChar(c)) {
1510 if ((cursor.pos() > 0
1511 && cursor.par()->isLineSeparator(cursor.pos() - 1))
1512 || (cursor.pos() > 0
1513 && cursor.par()->isNewline(cursor.pos() - 1))
1514 || (cursor.pos() == 0)) {
1515 static bool sent_space_message = false;
1516 if (!sent_space_message) {
1517 if (cursor.pos() == 0)
1518 bv()->owner()->message(_("You cannot insert a space at the beginning of a paragraph. Please read the Tutorial."));
1520 bv()->owner()->message(_("You cannot type two spaces this way. Please read the Tutorial."));
1521 sent_space_message = true;
1528 // Here case LyXText::InsertInset already inserted the character
1529 if (c != Paragraph::META_INSET)
1530 cursor.par()->insertChar(cursor.pos(), c);
1532 setCharFont(cursor.par(), cursor.pos(), rawtmpfont);
1534 current_font = rawtmpfont;
1535 real_current_font = realtmpfont;
1536 redoParagraph(cursor.par());
1537 setCursor(cursor.par(), cursor.pos() + 1, false, cursor.boundary());
1543 void LyXText::charInserted()
1545 // Here we could call FinishUndo for every 20 characters inserted.
1546 // This is from my experience how emacs does it. (Lgb)
1547 static unsigned int counter;
1557 void LyXText::prepareToPrint(ParagraphList::iterator pit,
1558 RowList::iterator rit, double & x,
1559 double & fill_separator,
1560 double & fill_hfill,
1561 double & fill_label_hfill,
1564 double w = rit->fill();
1566 fill_label_hfill = 0;
1568 fill_label_hfill = 0;
1571 pit->isRightToLeftPar(bv()->buffer()->params);
1573 x = workWidth() > 0 ? rightMargin(pit, *bv()->buffer(), *rit) : 0;
1575 x = workWidth() > 0 ? leftMargin(pit, *rit) : 0;
1577 // is there a manual margin with a manual label
1578 LyXLayout_ptr const & layout = pit->layout();
1580 if (layout->margintype == MARGIN_MANUAL
1581 && layout->labeltype == LABEL_MANUAL) {
1582 /// We might have real hfills in the label part
1583 int nlh = numberOfLabelHfills(*this, pit, rit);
1585 // A manual label par (e.g. List) has an auto-hfill
1586 // between the label text and the body of the
1588 // But we don't want to do this auto hfill if the par
1593 if (nlh && !pit->getLabelWidthString().empty()) {
1594 fill_label_hfill = labelFill(pit, *rit) / double(nlh);
1598 // are there any hfills in the row?
1599 int const nh = numberOfHfills(*this, pit, rit);
1603 fill_hfill = w / nh;
1604 // we don't have to look at the alignment if it is ALIGN_LEFT and
1605 // if the row is already larger then the permitted width as then
1606 // we force the LEFT_ALIGN'edness!
1607 } else if (int(rit->width()) < workWidth()) {
1608 // is it block, flushleft or flushright?
1609 // set x how you need it
1611 if (pit->params().align() == LYX_ALIGN_LAYOUT) {
1612 align = layout->align;
1614 align = pit->params().align();
1617 // center displayed insets
1618 InsetOld * inset = 0;
1619 if (rit->pos() < pit->size()
1620 && pit->isInset(rit->pos())
1621 && (inset = pit->getInset(rit->pos()))
1622 && (inset->display())) // || (inset->scroll() < 0)))
1623 align = (inset->lyxCode() == InsetOld::MATHMACRO_CODE)
1624 ? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
1625 // ERT insets should always be LEFT ALIGNED on screen
1626 inset = pit->inInset();
1627 if (inset && inset->owner() &&
1628 inset->owner()->lyxCode() == InsetOld::ERT_CODE)
1630 align = LYX_ALIGN_LEFT;
1634 case LYX_ALIGN_BLOCK:
1636 int const ns = numberOfSeparators(*this, pit, rit);
1637 RowList::iterator next_row = boost::next(rit);
1638 ParagraphList::iterator next_pit;
1640 if (ns && next_row != rowlist_.end() &&
1641 (next_pit = getPar(next_row)) == pit &&
1642 !(next_pit->isNewline(next_row->pos() - 1))
1643 && !(next_pit->isInset(next_row->pos()) &&
1644 next_pit->getInset(next_row->pos()) &&
1645 next_pit->getInset(next_row->pos())->display())
1647 fill_separator = w / ns;
1648 } else if (is_rtl) {
1653 case LYX_ALIGN_RIGHT:
1656 case LYX_ALIGN_CENTER:
1664 computeBidiTables(pit, bv()->buffer(), rit);
1666 pos_type body_pos = pit->beginningOfBody();
1667 pos_type last = lastPos(*this, pit, rit);
1670 (body_pos - 1 > last ||
1671 !pit->isLineSeparator(body_pos - 1))) {
1672 x += font_metrics::width(layout->labelsep, getLabelFont(pit));
1673 if (body_pos - 1 <= last)
1674 x += fill_label_hfill;
1680 // important for the screen
1683 // the cursor set functions have a special mechanism. When they
1684 // realize, that you left an empty paragraph, they will delete it.
1685 // They also delete the corresponding row
1687 void LyXText::cursorRightOneWord()
1689 ::cursorRightOneWord(cursor, ownerParagraphs());
1690 setCursor(cursor.par(), cursor.pos());
1694 // Skip initial whitespace at end of word and move cursor to *start*
1695 // of prior word, not to end of next prior word.
1696 void LyXText::cursorLeftOneWord()
1698 LyXCursor tmpcursor = cursor;
1699 ::cursorLeftOneWord(tmpcursor, ownerParagraphs());
1700 setCursor(tmpcursor.par(), tmpcursor.pos());
1704 void LyXText::selectWord(word_location loc)
1706 LyXCursor from = cursor;
1708 ::getWord(from, to, loc, ownerParagraphs());
1710 setCursor(from.par(), from.pos());
1713 selection.cursor = cursor;
1714 setCursor(to.par(), to.pos());
1719 // Select the word currently under the cursor when no
1720 // selection is currently set
1721 bool LyXText::selectWordWhenUnderCursor(word_location loc)
1723 if (!selection.set()) {
1725 return selection.set();
1731 void LyXText::acceptChange()
1733 if (!selection.set() && cursor.par()->size())
1736 if (selection.start.par() == selection.end.par()) {
1737 LyXCursor & startc = selection.start;
1738 LyXCursor & endc = selection.end;
1739 recordUndo(bv(), Undo::INSERT, startc.par());
1740 startc.par()->acceptChange(startc.pos(), endc.pos());
1743 redoParagraph(startc.par());
1744 setCursorIntern(startc.par(), 0);
1746 #warning handle multi par selection
1750 void LyXText::rejectChange()
1752 if (!selection.set() && cursor.par()->size())
1755 if (selection.start.par() == selection.end.par()) {
1756 LyXCursor & startc = selection.start;
1757 LyXCursor & endc = selection.end;
1758 recordUndo(bv(), Undo::INSERT, startc.par());
1759 startc.par()->rejectChange(startc.pos(), endc.pos());
1762 redoParagraph(startc.par());
1763 setCursorIntern(startc.par(), 0);
1765 #warning handle multi par selection
1769 // This function is only used by the spellchecker for NextWord().
1770 // It doesn't handle LYX_ACCENTs and probably never will.
1772 LyXText::selectNextWordToSpellcheck(float & value)
1774 if (the_locking_inset) {
1775 WordLangTuple word = the_locking_inset->selectNextWordToSpellcheck(bv(), value);
1776 if (!word.word().empty()) {
1777 value += float(cursor.y());
1778 value /= float(height);
1781 // we have to go on checking so move cursor to the next char
1782 if (cursor.pos() == cursor.par()->size()) {
1783 if (boost::next(cursor.par()) == ownerParagraphs().end())
1785 cursor.par(boost::next(cursor.par()));
1788 cursor.pos(cursor.pos() + 1);
1790 ParagraphList::iterator tmppit = cursor.par();
1792 // If this is not the very first word, skip rest of
1793 // current word because we are probably in the middle
1794 // of a word if there is text here.
1795 if (cursor.pos() || cursor.par() != ownerParagraphs().begin()) {
1796 while (cursor.pos() < cursor.par()->size()
1797 && cursor.par()->isLetter(cursor.pos()))
1798 cursor.pos(cursor.pos() + 1);
1801 // Now, skip until we have real text (will jump paragraphs)
1803 ParagraphList::iterator cpit = cursor.par();
1804 pos_type const cpos(cursor.pos());
1806 if (cpos == cpit->size()) {
1807 if (boost::next(cpit) != ownerParagraphs().end()) {
1808 cursor.par(boost::next(cpit));
1815 bool const is_good_inset = cpit->isInset(cpos)
1816 && cpit->getInset(cpos)->allowSpellcheck();
1818 if (!isDeletedText(*cpit, cpos)
1819 && (is_good_inset || cpit->isLetter(cpos)))
1822 cursor.pos(cpos + 1);
1825 // now check if we hit an inset so it has to be a inset containing text!
1826 if (cursor.pos() < cursor.par()->size() &&
1827 cursor.par()->isInset(cursor.pos())) {
1829 FuncRequest cmd(bv(), LFUN_INSET_EDIT, "left");
1830 cursor.par()->getInset(cursor.pos())->localDispatch(cmd);
1831 // now call us again to do the above trick
1832 // but obviously we have to start from down below ;)
1833 return bv()->text->selectNextWordToSpellcheck(value);
1836 // Update the value if we changed paragraphs
1837 if (cursor.par() != tmppit) {
1838 setCursor(cursor.par(), cursor.pos());
1839 value = float(cursor.y())/float(height);
1842 // Start the selection from here
1843 selection.cursor = cursor;
1845 string lang_code = getFont(cursor.par(), cursor.pos()).language()->code();
1846 // and find the end of the word (insets like optional hyphens
1847 // and ligature break are part of a word)
1848 while (cursor.pos() < cursor.par()->size()
1849 && cursor.par()->isLetter(cursor.pos())
1850 && !isDeletedText(*cursor.par(), cursor.pos()))
1851 cursor.pos(cursor.pos() + 1);
1853 // Finally, we copy the word to a string and return it
1855 if (selection.cursor.pos() < cursor.pos()) {
1857 for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
1858 if (!cursor.par()->isInset(i))
1859 str += cursor.par()->getChar(i);
1862 return WordLangTuple(str, lang_code);
1866 // This one is also only for the spellchecker
1867 void LyXText::selectSelectedWord()
1869 if (the_locking_inset) {
1870 the_locking_inset->selectSelectedWord(bv());
1873 // move cursor to the beginning
1874 setCursor(selection.cursor.par(), selection.cursor.pos());
1876 // set the sel cursor
1877 selection.cursor = cursor;
1879 // now find the end of the word
1880 while (cursor.pos() < cursor.par()->size()
1881 && cursor.par()->isLetter(cursor.pos()))
1882 cursor.pos(cursor.pos() + 1);
1884 setCursor(cursor.par(), cursor.pos());
1886 // finally set the selection
1891 // Delete from cursor up to the end of the current or next word.
1892 void LyXText::deleteWordForward()
1894 if (cursor.par()->empty())
1897 LyXCursor tmpcursor = cursor;
1898 selection.set(true); // to avoid deletion
1899 cursorRightOneWord();
1900 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1901 selection.cursor = cursor;
1905 // Great, CutSelection() gets rid of multiple spaces.
1906 cutSelection(true, false);
1911 // Delete from cursor to start of current or prior word.
1912 void LyXText::deleteWordBackward()
1914 if (cursor.par()->empty())
1917 LyXCursor tmpcursor = cursor;
1918 selection.set(true); // to avoid deletion
1919 cursorLeftOneWord();
1920 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1921 selection.cursor = cursor;
1924 cutSelection(true, false);
1929 // Kill to end of line.
1930 void LyXText::deleteLineForward()
1932 if (cursor.par()->empty())
1933 // Paragraph is empty, so we just go to the right
1936 LyXCursor tmpcursor = cursor;
1937 // We can't store the row over a regular setCursor
1938 // so we set it to 0 and reset it afterwards.
1939 selection.set(true); // to avoid deletion
1941 setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
1942 selection.cursor = cursor;
1945 // What is this test for ??? (JMarc)
1946 if (!selection.set()) {
1947 deleteWordForward();
1949 cutSelection(true, false);
1955 void LyXText::changeCase(LyXText::TextCase action)
1960 if (selection.set()) {
1961 from = selection.start;
1965 ::getWord(from, to, lyx::PARTIAL_WORD, ownerParagraphs());
1966 setCursor(to.par(), to.pos() + 1);
1969 recordUndo(bv(), Undo::ATOMIC, from.par(), to.par());
1971 pos_type pos = from.pos();
1972 ParagraphList::iterator pit = from.par();
1974 while (pit != ownerParagraphs().end() &&
1975 (pos != to.pos() || pit != to.par())) {
1976 if (pos == pit->size()) {
1981 unsigned char c = pit->getChar(pos);
1982 if (!IsInsetChar(c)) {
1984 case text_lowercase:
1987 case text_capitalization:
1989 action = text_lowercase;
1991 case text_uppercase:
1997 pit->setChar(pos, c);
2003 void LyXText::Delete()
2005 // this is a very easy implementation
2007 LyXCursor old_cursor = cursor;
2008 int const old_cur_par_id = old_cursor.par()->id();
2009 int const old_cur_par_prev_id =
2010 (old_cursor.par() != ownerParagraphs().begin() ?
2011 boost::prior(old_cursor.par())->id() : -1);
2013 // just move to the right
2016 // CHECK Look at the comment here.
2017 // This check is not very good...
2018 // The cursorRightIntern calls DeleteEmptyParagrapgMechanism
2019 // and that can very well delete the par or par->previous in
2020 // old_cursor. Will a solution where we compare paragraph id's
2022 if ((cursor.par() != ownerParagraphs().begin() ? boost::prior(cursor.par())->id() : -1)
2023 == old_cur_par_prev_id
2024 && cursor.par()->id() != old_cur_par_id) {
2025 // delete-empty-paragraph-mechanism has done it
2029 // if you had success make a backspace
2030 if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
2031 LyXCursor tmpcursor = cursor;
2032 // to make sure undo gets the right cursor position
2033 cursor = old_cursor;
2034 recordUndo(bv(), Undo::DELETE, cursor.par());
2041 void LyXText::backspace()
2043 // Get the font that is used to calculate the baselineskip
2044 pos_type lastpos = cursor.par()->size();
2046 if (cursor.pos() == 0) {
2047 // The cursor is at the beginning of a paragraph,
2048 // so the the backspace will collapse two paragraphs into one.
2050 // but it's not allowed unless it's new
2051 if (cursor.par()->isChangeEdited(0, cursor.par()->size()))
2054 // we may paste some paragraphs
2056 // is it an empty paragraph?
2059 || (lastpos == 1 && cursor.par()->isSeparator(0))) {
2060 // This is an empty paragraph and we delete it just
2061 // by moving the cursor one step
2062 // left and let the DeleteEmptyParagraphMechanism
2063 // handle the actual deletion of the paragraph.
2065 if (cursor.par() != ownerParagraphs().begin()) {
2066 ParagraphList::iterator tmppit = boost::prior(cursor.par());
2067 if (cursor.par()->layout() == tmppit->layout()
2068 && cursor.par()->getAlign() == tmppit->getAlign()) {
2069 // Inherit bottom DTD from the paragraph below.
2070 // (the one we are deleting)
2071 tmppit->params().lineBottom(cursor.par()->params().lineBottom());
2072 tmppit->params().spaceBottom(cursor.par()->params().spaceBottom());
2073 tmppit->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
2078 // the layout things can change the height of a row !
2079 setHeightOfRow(cursorRow());
2084 if (cursor.par() != ownerParagraphs().begin()) {
2085 recordUndo(bv(), Undo::DELETE,
2086 boost::prior(cursor.par()),
2090 ParagraphList::iterator tmppit = cursor.par();
2091 RowList::iterator tmprow = cursorRow();
2093 // We used to do cursorLeftIntern() here, but it is
2094 // not a good idea since it triggers the auto-delete
2095 // mechanism. So we do a cursorLeftIntern()-lite,
2096 // without the dreaded mechanism. (JMarc)
2097 if (cursor.par() != ownerParagraphs().begin()) {
2098 // steps into the above paragraph.
2099 setCursorIntern(boost::prior(cursor.par()),
2100 boost::prior(cursor.par())->size(),
2104 // Pasting is not allowed, if the paragraphs have different
2105 // layout. I think it is a real bug of all other
2106 // word processors to allow it. It confuses the user.
2107 //Correction: Pasting is always allowed with standard-layout
2108 LyXTextClass const & tclass =
2109 bv()->buffer()->params.getLyXTextClass();
2111 if (cursor.par() != tmppit
2112 && (cursor.par()->layout() == tmppit->layout()
2113 || tmppit->layout() == tclass.defaultLayout())
2114 && cursor.par()->getAlign() == tmppit->getAlign()) {
2115 removeParagraph(tmprow);
2117 mergeParagraph(bv()->buffer()->params,
2118 bv()->buffer()->paragraphs, cursor.par());
2120 if (cursor.pos() && cursor.par()->isSeparator(cursor.pos() - 1))
2121 cursor.pos(cursor.pos() - 1);
2123 // the row may have changed, block, hfills etc.
2125 setCursor(cursor.par(), cursor.pos(), false);
2128 // this is the code for a normal backspace, not pasting
2130 recordUndo(bv(), Undo::DELETE, cursor.par());
2131 // We used to do cursorLeftIntern() here, but it is
2132 // not a good idea since it triggers the auto-delete
2133 // mechanism. So we do a cursorLeftIntern()-lite,
2134 // without the dreaded mechanism. (JMarc)
2135 setCursorIntern(cursor.par(), cursor.pos() - 1,
2136 false, cursor.boundary());
2137 cursor.par()->erase(cursor.pos());
2140 lastpos = cursor.par()->size();
2141 if (cursor.pos() == lastpos)
2145 setCursor(cursor.par(), cursor.pos(), false, !cursor.boundary());
2149 RowList::iterator LyXText::cursorRow() const
2151 return getRow(cursor.par(), cursor.pos());
2155 RowList::iterator LyXText::getRow(LyXCursor const & cur) const
2157 return getRow(cur.par(), cur.pos());
2162 LyXText::getRow(ParagraphList::iterator pit, pos_type pos) const
2165 return rowlist_.end();
2167 // find the first row of the specified paragraph
2168 RowList::iterator rit = rowlist_.begin();
2169 RowList::iterator end = rowlist_.end();
2170 while (boost::next(rit) != end && getPar(rit) != pit) {
2174 // now find the wanted row
2175 while (rit->pos() < pos
2176 && boost::next(rit) != end
2177 && getPar(boost::next(rit)) == pit
2178 && boost::next(rit)->pos() <= pos) {
2186 // returns pointer to a specified row
2188 LyXText::getRow(ParagraphList::iterator pit, pos_type pos, int & y) const
2193 return rowlist_.end();
2195 // find the first row of the specified paragraph
2196 RowList::iterator rit = rowlist_.begin();
2197 RowList::iterator end = rowlist_.end();
2198 while (boost::next(rit) != end && getPar(rit) != pit) {
2203 // now find the wanted row
2204 while (rit->pos() < pos
2205 && boost::next(rit) != end
2206 && getPar(boost::next(rit)) == pit
2207 && boost::next(rit)->pos() <= pos) {
2216 // returns pointer to some fancy row 'below' specified row
2217 RowList::iterator LyXText::cursorIRow() const
2220 return getRow(cursor.par(), cursor.pos(), y);
2224 RowList::iterator LyXText::getRowNearY(int & y) const
2226 RowList::iterator rit = anchor_row_;
2227 RowList::iterator const beg = rows().begin();
2228 RowList::iterator const end = rows().end();
2230 if (rows().empty()) {
2237 int tmpy = rit->y();
2240 while (rit != end && tmpy <= y) {
2241 tmpy += rit->height();
2246 tmpy -= rit->height();
2249 while (rit != beg && tmpy > y) {
2251 tmpy -= rit->height();
2254 if (tmpy < 0 || rit == end) {
2266 int LyXText::getDepth() const
2268 return cursor.par()->getDepth();
2272 #warning Expensive. Remove before 1.4!
2273 // computes a ParagraphList::iterator from RowList::iterator by
2274 // counting zeros in the sequence of pos values.
2276 ParagraphList::iterator LyXText::getPar(RowList::iterator row) const
2278 if (row == rows().end()) {
2279 lyxerr << "getPar() pit at end " << endl;
2283 if (row == rows().begin()) {
2284 return ownerParagraphs().begin();
2287 ParagraphList::iterator pit = ownerParagraphs().begin();
2288 RowList::iterator rit = rows().begin();
2289 RowList::iterator rend = rows().end();
2290 for (++rit ; rit != rend; ++rit) {
2291 if (rit->pos() == 0) {
2293 if (pit == ownerParagraphs().end()) {
2294 lyxerr << "unexpected in LyXText::getPar()" << endl;
2303 lyxerr << "LyXText::getPar: row not found " << endl;
2305 return ownerParagraphs().end(); // shut up compiler
2309 RowList::iterator LyXText::beginRow(ParagraphList::iterator pit) const
2311 int n = std::distance(ownerParagraphs().begin(), pit);
2313 RowList::iterator rit = rows().begin();
2314 RowList::iterator end = rows().end();
2315 for ( ; rit != end; ++rit)
2316 if (rit->pos() == 0 && n-- == 0)
2323 RowList::iterator LyXText::endRow(ParagraphList::iterator pit) const
2325 return beginRow(boost::next(pit));