2 * \file src/TextMetrics.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
7 * \author Lars Gullik Bjønnes
8 * \author Jean-Marc Lasgouttes
10 * \author André Pönitz
12 * \author Jürgen Vigna
13 * \author Abdelrazak Younes
15 * Full author contact details are available in file CREDITS.
20 #include "TextMetrics.h"
24 #include "buffer_funcs.h"
25 #include "BufferParams.h"
26 #include "BufferView.h"
27 #include "CoordCache.h"
29 #include "CutAndPaste.h"
30 #include "FuncRequest.h"
32 #include "InsetList.h"
36 #include "MetricsInfo.h"
37 #include "paragraph_funcs.h"
38 #include "ParagraphParameters.h"
39 #include "ParIterator.h"
40 #include "rowpainter.h"
42 #include "TextClass.h"
45 #include "mathed/MacroTable.h"
46 #include "mathed/MathMacroTemplate.h"
48 #include "frontends/FontMetrics.h"
49 #include "frontends/Painter.h"
51 #include "support/debug.h"
53 #include "support/lassert.h"
60 using frontend::FontMetrics;
62 static int numberOfSeparators(Paragraph const & par, Row const & row)
64 pos_type const first = max(row.pos(), par.beginOfBody());
65 pos_type const last = row.endpos() - 1;
67 for (pos_type p = first; p < last; ++p) {
68 if (par.isSeparator(p))
75 static int numberOfLabelHfills(Paragraph const & par, Row const & row)
77 pos_type last = row.endpos() - 1;
78 pos_type first = row.pos();
80 // hfill *DO* count at the beginning of paragraphs!
82 while (first < last && par.isHfill(first))
86 last = min(last, par.beginOfBody());
88 for (pos_type p = first; p < last; ++p) {
96 static int numberOfHfills(Paragraph const & par, Row const & row)
98 pos_type const last = row.endpos();
99 pos_type first = row.pos();
101 // hfill *DO* count at the beginning of paragraphs!
103 while (first < last && par.isHfill(first))
107 first = max(first, par.beginOfBody());
110 for (pos_type p = first; p < last; ++p) {
118 /////////////////////////////////////////////////////////////////////
122 /////////////////////////////////////////////////////////////////////
125 TextMetrics::TextMetrics(BufferView * bv, Text * text)
126 : bv_(bv), text_(text)
129 max_width_ = bv_->workWidth();
130 dim_.wid = max_width_;
134 //text_->updateLabels(bv->buffer());
138 bool TextMetrics::contains(pit_type pit) const
140 return par_metrics_.find(pit) != par_metrics_.end();
144 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
146 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
151 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
153 ParMetricsCache::const_iterator it = par_metrics_.begin();
154 return make_pair(it->first, &it->second);
158 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
160 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
161 return make_pair(it->first, &it->second);
165 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
167 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
168 if (pmc_it == par_metrics_.end()) {
169 pmc_it = par_metrics_.insert(
170 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
172 if (pmc_it->second.rows().empty() && redo)
174 return pmc_it->second;
178 int TextMetrics::parPosition(pit_type pit) const
180 if (pit < par_metrics_.begin()->first)
182 if (pit > par_metrics_.rbegin()->first)
185 return par_metrics_[pit].position();
189 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
191 LASSERT(mi.base.textwidth > 0, /**/);
192 max_width_ = mi.base.textwidth;
193 // backup old dimension.
194 Dimension const old_dim = dim_;
197 dim_.wid = min_width;
198 pit_type const npar = text_->paragraphs().size();
200 // If there is more than one row, expand the text to
201 // the full allowable width.
202 dim_.wid = max_width_;
204 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
205 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
207 bool changed = false;
209 for (pit_type pit = 0; pit != npar; ++pit) {
210 changed |= redoParagraph(pit);
211 ParagraphMetrics const & pm = par_metrics_[pit];
213 if (dim_.wid < pm.width())
214 dim_.wid = pm.width();
217 dim_.asc = par_metrics_[0].ascent();
218 dim_.des = h - dim_.asc;
219 //lyxerr << "dim_.wid " << dim_.wid << endl;
220 //lyxerr << "dim_.asc " << dim_.asc << endl;
221 //lyxerr << "dim_.des " << dim_.des << endl;
223 changed |= dim_ != old_dim;
229 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
231 return main_text_? pm.rightMargin(*bv_) : 0;
235 int TextMetrics::rightMargin(pit_type const pit) const
237 return main_text_? par_metrics_[pit].rightMargin(*bv_) : 0;
241 void TextMetrics::applyOuterFont(Font & font) const
244 lf.fontInfo().reduce(bv_->buffer().params().getFont().fontInfo());
245 lf.fontInfo().realize(font.fontInfo());
246 lf.setLanguage(font.language());
251 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
253 LASSERT(pos >= 0, /**/);
255 ParagraphList const & pars = text_->paragraphs();
256 Paragraph const & par = pars[pit];
257 Layout const & layout = par.layout();
258 Buffer const & buffer = bv_->buffer();
260 BufferParams const & params = buffer.params();
261 pos_type const body_pos = par.beginOfBody();
263 // We specialize the 95% common case:
264 if (!par.getDepth()) {
265 Font f = par.getFontSettings(params, pos);
266 if (!text_->isMainText(buffer))
268 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
270 FontInfo const & lf = lab ? layout.labelfont : layout.font;
271 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
273 // In case the default family has been customized
274 if (lf.family() == INHERIT_FAMILY)
275 rlf.setFamily(params.getFont().fontInfo().family());
276 f.fontInfo().realize(rlf);
280 // The uncommon case need not be optimized as much
281 FontInfo const & layoutfont = pos < body_pos ?
282 layout.labelfont : layout.font;
284 Font font = par.getFontSettings(params, pos);
285 font.fontInfo().realize(layoutfont);
287 if (!text_->isMainText(buffer))
288 applyOuterFont(font);
290 // Realize against environment font information
291 // NOTE: the cast to pit_type should be removed when pit_type
292 // changes to a unsigned integer.
293 if (pit < pit_type(pars.size()))
294 font.fontInfo().realize(outerFont(pit, pars).fontInfo());
296 // Realize with the fonts of lesser depth.
297 font.fontInfo().realize(params.getFont().fontInfo());
303 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
305 if (!lyxrc.rtl_support || !sl.text())
309 if (boundary && sl.pos() > 0)
312 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
316 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
318 if (!lyxrc.rtl_support)
321 // no RTL boundary at paragraph start
325 Font const & left_font = displayFont(pit, pos - 1);
327 return isRTLBoundary(pit, pos, left_font);
331 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
332 Font const & font) const
334 if (!lyxrc.rtl_support)
337 // no RTL boundary at paragraph start
341 ParagraphMetrics & pm = par_metrics_[pit];
342 // no RTL boundary in empty paragraph
343 if (pm.rows().empty())
346 pos_type endpos = pm.getRow(pos - 1, false).endpos();
347 pos_type startpos = pm.getRow(pos, false).pos();
348 // no RTL boundary at line start:
349 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
351 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
354 Paragraph const & par = text_->getPar(pit);
355 bool left = font.isVisibleRightToLeft();
357 if (pos == par.size())
358 right = par.isRTL(bv_->buffer().params());
360 right = displayFont(pit, pos).isVisibleRightToLeft();
362 // no RTL boundary at line break:
363 // abc|\n -> move right -> abc\n (and not: abc\n|
365 if (startpos == pos && endpos == pos && endpos != par.size()
366 && (par.isNewline(pos - 1)
367 || par.isLineSeparator(pos - 1)
368 || par.isSeparator(pos - 1)))
371 return left != right;
375 bool TextMetrics::redoParagraph(pit_type const pit)
377 Paragraph & par = text_->getPar(pit);
378 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
379 // redoParagraph() recursively inside parMetrics.
380 Dimension old_dim = parMetrics(pit, false).dim();
381 ParagraphMetrics & pm = par_metrics_[pit];
384 Buffer & buffer = bv_->buffer();
385 main_text_ = (text_ == &buffer.text());
386 bool changed = false;
388 // FIXME: This check ought to be done somewhere else. It is the reason
389 // why text_ is not const. But then, where else to do it?
390 // Well, how can you end up with either (a) a biblio environment that
391 // has no InsetBibitem or (b) a biblio environment with more than one
392 // InsetBibitem? I think the answer is: when paragraphs are merged;
393 // when layout is set; when material is pasted.
394 int const moveCursor = par.checkBiblio(buffer);
396 const_cast<Cursor &>(bv_->cursor()).posForward();
397 else if (moveCursor < 0) {
398 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
399 if (cursor.pos() >= -moveCursor)
400 cursor.posBackward();
403 // Optimisation: this is used in the next two loops
404 // so better to calculate that once here.
405 int const right_margin = rightMargin(pm);
407 // iterator pointing to paragraph to resolve macros
408 DocIterator parPos = text_->macrocontextPosition();
412 LYXERR(Debug::INFO, "MacroContext not initialised!"
413 << " Going through the buffer again and hope"
414 << " the context is better then.");
415 bv_->buffer().updateLabels();
416 parPos = text_->macrocontextPosition();
417 LASSERT(!parPos.empty(), /**/);
422 // FIXME: We should always use getFont(), see documentation of
423 // noFontChange() in Inset.h.
424 Font const bufferfont = buffer.params().getFont();
425 InsetList::const_iterator ii = par.insetList().begin();
426 InsetList::const_iterator iend = par.insetList().end();
427 for (; ii != iend; ++ii) {
428 // position already initialized?
429 if (!parPos.empty()) {
430 parPos.pos() = ii->pos;
432 // A macro template would normally not be visible
433 // by itself. But the tex macro semantics allow
434 // recursion, so we artifically take the context
435 // after the macro template to simulate this.
436 if (ii->inset->lyxCode() == MATHMACRO_CODE)
440 // do the metric calculation
442 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
444 Font const & font = ii->inset->noFontChange() ?
445 bufferfont : displayFont(pit, ii->pos);
446 MacroContext mc(buffer, parPos);
447 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
448 ii->inset->metrics(mi, dim);
449 Dimension const old_dim = pm.insetDimension(ii->inset);
450 if (old_dim != dim) {
451 pm.setInsetDimension(ii->inset, dim);
456 par.setBeginOfBody();
458 size_t row_index = 0;
459 // maximum pixel width of a row
460 int width = max_width_ - right_margin; // - leftMargin(max_width_, pit, row);
463 pos_type end = rowBreakPoint(width, pit, first);
464 if (row_index || end < par.size())
465 // If there is more than one row, expand the text to
466 // the full allowable width. This setting here is needed
467 // for the computeRowMetrics() below.
468 dim_.wid = max_width_;
470 dim = rowHeight(pit, first, end);
471 dim.wid = rowWidth(right_margin, pit, first, end);
472 if (row_index == pm.rows().size())
473 pm.rows().push_back(Row());
474 Row & row = pm.rows()[row_index];
475 row.setChanged(false);
478 row.setDimension(dim);
479 int const max_row_width = max(dim_.wid, dim.wid);
480 computeRowMetrics(pit, row, max_row_width);
484 pm.dim().wid = max(pm.dim().wid, dim.wid);
485 pm.dim().des += dim.height();
486 } while (first < par.size());
488 if (row_index < pm.rows().size())
489 pm.rows().resize(row_index);
491 // Make sure that if a par ends in newline, there is one more row
493 if (first > 0 && par.isNewline(first - 1)) {
494 Dimension dim = rowHeight(pit, first, first);
495 dim.wid = rowWidth(right_margin, pit, first, first);
496 if (row_index == pm.rows().size())
497 pm.rows().push_back(Row());
498 Row & row = pm.rows()[row_index];
499 row.setChanged(false);
502 row.setDimension(dim);
503 int const max_row_width = max(dim_.wid, dim.wid);
504 computeRowMetrics(pit, row, max_row_width);
505 pm.dim().des += dim.height();
508 pm.dim().asc += pm.rows()[0].ascent();
509 pm.dim().des -= pm.rows()[0].ascent();
511 changed |= old_dim.height() != pm.dim().height();
517 void TextMetrics::computeRowMetrics(pit_type const pit,
518 Row & row, int width) const
523 Buffer & buffer = bv_->buffer();
524 Paragraph const & par = text_->getPar(pit);
526 double w = width - row.width();
527 // FIXME: put back this assertion when the crash on new doc is solved.
528 //LASSERT(w >= 0, /**/);
530 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
531 //lyxerr << "row.width() " << row.width() << endl;
532 //lyxerr << "w " << w << endl;
534 bool const is_rtl = text_->isRTL(buffer, par);
536 row.x = rightMargin(pit);
538 row.x = leftMargin(max_width_, pit, row.pos());
540 // is there a manual margin with a manual label
541 Layout const & layout = par.layout();
543 if (layout.margintype == MARGIN_MANUAL
544 && layout.labeltype == LABEL_MANUAL) {
545 /// We might have real hfills in the label part
546 int nlh = numberOfLabelHfills(par, row);
548 // A manual label par (e.g. List) has an auto-hfill
549 // between the label text and the body of the
551 // But we don't want to do this auto hfill if the par
556 if (nlh && !par.getLabelWidthString().empty())
557 row.label_hfill = labelFill(pit, row) / double(nlh);
561 // are there any hfills in the row?
562 if (int const nh = numberOfHfills(par, row)) {
564 hfill = w / double(nh);
565 // we don't have to look at the alignment if it is ALIGN_LEFT and
566 // if the row is already larger then the permitted width as then
567 // we force the LEFT_ALIGN'edness!
568 } else if (int(row.width()) < max_width_) {
569 // is it block, flushleft or flushright?
570 // set x how you need it
572 if (par.params().align() == LYX_ALIGN_LAYOUT)
573 align = layout.align;
575 align = par.params().align();
577 // handle alignment inside tabular cells
578 Inset const & owner = par.inInset();
579 switch (owner.contentAlignment()) {
580 case LYX_ALIGN_CENTER:
582 case LYX_ALIGN_RIGHT:
583 if (align == LYX_ALIGN_NONE
584 || align == LYX_ALIGN_BLOCK)
585 align = owner.contentAlignment();
588 // unchanged (use align)
592 // Display-style insets should always be on a centered row
593 if (Inset const * inset = par.getInset(row.pos())) {
594 switch (inset->display()) {
595 case Inset::AlignLeft:
596 align = LYX_ALIGN_BLOCK;
598 case Inset::AlignCenter:
599 align = LYX_ALIGN_CENTER;
602 // unchanged (use align)
604 case Inset::AlignRight:
605 align = LYX_ALIGN_RIGHT;
611 case LYX_ALIGN_BLOCK: {
612 int const ns = numberOfSeparators(par, row);
613 bool disp_inset = false;
614 if (row.endpos() < par.size()) {
615 Inset const * in = par.getInset(row.endpos());
617 disp_inset = in->display();
619 // If we have separators, this is not the last row of a
620 // par, does not end in newline, and is not row above a
621 // display inset... then stretch it
623 && row.endpos() < par.size()
624 && !par.isNewline(row.endpos() - 1)
627 row.separator = w / ns;
628 //lyxerr << "row.separator " << row.separator << endl;
629 //lyxerr << "ns " << ns << endl;
635 case LYX_ALIGN_RIGHT:
638 case LYX_ALIGN_CENTER:
645 pos_type body_pos = par.beginOfBody();
646 pos_type end = row.endpos();
649 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
651 row.x += theFontMetrics(text_->labelFont(buffer, par)).
652 width(layout.labelsep);
654 row.x += row.label_hfill;
658 pos_type const endpos = row.endpos();
659 pos_type body_pos = par.beginOfBody();
661 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
664 ParagraphMetrics & pm = par_metrics_[pit];
665 InsetList::const_iterator ii = par.insetList().begin();
666 InsetList::const_iterator iend = par.insetList().end();
667 for ( ; ii != iend; ++ii) {
668 if (ii->pos >= endpos || ii->pos < row.pos()
669 || (ii->inset->lyxCode() != SPACE_CODE ||
670 !ii->inset->isStretchableSpace()))
672 Dimension dim = row.dimension();
673 if (pm.hfillExpansion(row, ii->pos))
674 dim.wid = int(ii->pos >= body_pos ?
675 max(hfill, 5.0) : row.label_hfill);
678 // Cache the inset dimension.
679 bv_->coordCache().insets().add(ii->inset, dim);
680 pm.setInsetDimension(ii->inset, dim);
685 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
687 Buffer & buffer = bv_->buffer();
688 Paragraph const & par = text_->getPar(pit);
690 pos_type last = par.beginOfBody();
691 LASSERT(last > 0, /**/);
693 // -1 because a label ends with a space that is in the label
696 // a separator at this end does not count
697 if (par.isLineSeparator(last))
701 for (pos_type i = row.pos(); i <= last; ++i)
702 w += singleWidth(pit, i);
704 docstring const & label = par.params().labelWidthString();
708 FontMetrics const & fm
709 = theFontMetrics(text_->labelFont(buffer, par));
711 return max(0, fm.width(label) - w);
715 // this needs special handling - only newlines count as a break point
716 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
718 pos_type const end = par.size();
721 if (par.isNewline(i))
728 int TextMetrics::labelEnd(pit_type const pit) const
730 // labelEnd is only needed if the layout fills a flushleft label.
731 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
733 // return the beginning of the body
734 return leftMargin(max_width_, pit);
740 * Calling Text::getFont is slow. While rebreaking we scan a
741 * paragraph from left to right calling getFont for every char. This
742 * simple class address this problem by hidding an optimization trick
743 * (not mine btw -AB): the font is reused in the whole font span. The
744 * class handles transparently the "hidden" (not part of the fontlist)
745 * label font (as getFont does).
751 FontIterator(TextMetrics const & tm,
752 Paragraph const & par, pit_type pit, pos_type pos)
753 : tm_(tm), par_(par), pit_(pit), pos_(pos),
754 font_(tm.displayFont(pit, pos)),
755 endspan_(par.fontSpan(pos).last),
756 bodypos_(par.beginOfBody())
760 Font const & operator*() const { return font_; }
763 FontIterator & operator++()
766 if (pos_ > endspan_ || pos_ == bodypos_) {
767 font_ = tm_.displayFont(pit_, pos_);
768 endspan_ = par_.fontSpan(pos_).last;
774 Font * operator->() { return &font_; }
778 TextMetrics const & tm_;
780 Paragraph const & par_;
795 pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
798 Buffer & buffer = bv_->buffer();
799 ParagraphMetrics const & pm = par_metrics_[pit];
800 Paragraph const & par = text_->getPar(pit);
801 pos_type const end = par.size();
802 if (pos == end || width < 0)
805 Layout const & layout = par.layout();
807 if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX)
808 return addressBreakPoint(pos, par);
810 pos_type const body_pos = par.beginOfBody();
812 // check for possible inline completion
813 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
814 pos_type inlineCompletionLPos = -1;
815 if (inlineCompletionPos.inTexted()
816 && inlineCompletionPos.text() == text_
817 && inlineCompletionPos.pit() == pit) {
818 // draw logically behind the previous character
819 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
822 // Now we iterate through until we reach the right margin
823 // or the end of the par, then choose the possible break
826 int label_end = labelEnd(pit);
827 int const left = leftMargin(max_width_, pit, pos);
830 // pixel width since last breakpoint
833 FontIterator fi = FontIterator(*this, par, pit, pos);
834 pos_type point = end;
836 for ( ; i < end; ++i, ++fi) {
837 int thiswidth = pm.singleWidth(i, *fi);
839 // add inline completion width
840 if (inlineCompletionLPos == i) {
841 docstring const & completion = bv_->inlineCompletion();
842 if (completion.length() > 0)
843 thiswidth += theFontMetrics(*fi).width(completion);
846 // add the auto-hfill from label end to the body
847 if (body_pos && i == body_pos) {
848 FontMetrics const & fm = theFontMetrics(
849 text_->labelFont(buffer, par));
850 int add = fm.width(layout.labelsep);
851 if (par.isLineSeparator(i - 1))
852 add -= singleWidth(pit, i - 1);
854 add = max(add, label_end - x);
859 chunkwidth += thiswidth;
861 // break before a character that will fall off
862 // the right of the row
864 // if no break before, break here
865 if (point == end || chunkwidth >= width - left) {
871 // exit on last registered breakpoint:
875 if (par.isNewline(i)) {
879 Inset const * inset = 0;
882 if ((inset = par.getInset(i + 1)) && inset->display()) {
887 if ((inset = par.getInset(i)) && inset->display()) {
893 inset = par.getInset(i);
894 if (!inset || inset->isChar()) {
895 // some insets are line separators too
896 if (par.isLineSeparator(i)) {
897 // register breakpoint:
904 // maybe found one, but the par is short enough.
905 if (i == end && x < width)
908 // manual labels cannot be broken in LaTeX. But we
909 // want to make our on-screen rendering of footnotes
911 if (body_pos && point < body_pos)
918 int TextMetrics::rowWidth(int right_margin, pit_type const pit,
919 pos_type const first, pos_type const end) const
921 Buffer & buffer = bv_->buffer();
922 // get the pure distance
923 ParagraphMetrics const & pm = par_metrics_[pit];
924 Paragraph const & par = text_->getPar(pit);
925 int w = leftMargin(max_width_, pit, first);
926 int label_end = labelEnd(pit);
928 // check for possible inline completion
929 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
930 pos_type inlineCompletionLPos = -1;
931 if (inlineCompletionPos.inTexted()
932 && inlineCompletionPos.text() == text_
933 && inlineCompletionPos.pit() == pit) {
934 // draw logically behind the previous character
935 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
938 pos_type const body_pos = par.beginOfBody();
942 FontIterator fi = FontIterator(*this, par, pit, i);
943 for ( ; i < end; ++i, ++fi) {
944 if (body_pos > 0 && i == body_pos) {
945 FontMetrics const & fm = theFontMetrics(
946 text_->labelFont(buffer, par));
947 w += fm.width(par.layout().labelsep);
948 if (par.isLineSeparator(i - 1))
949 w -= singleWidth(pit, i - 1);
950 w = max(w, label_end);
952 w += pm.singleWidth(i, *fi);
954 // add inline completion width
955 if (inlineCompletionLPos == i) {
956 docstring const & completion = bv_->inlineCompletion();
957 if (completion.length() > 0)
958 w += theFontMetrics(*fi).width(completion);
963 if (body_pos > 0 && body_pos >= end) {
964 FontMetrics const & fm = theFontMetrics(
965 text_->labelFont(buffer, par));
966 w += fm.width(par.layout().labelsep);
967 if (end > 0 && par.isLineSeparator(end - 1))
968 w -= singleWidth(pit, end - 1);
969 w = max(w, label_end);
972 return w + right_margin;
976 Dimension TextMetrics::rowHeight(pit_type const pit, pos_type const first,
977 pos_type const end, bool topBottomSpace) const
979 Paragraph const & par = text_->getPar(pit);
980 // get the maximum ascent and the maximum descent
981 double layoutasc = 0;
982 double layoutdesc = 0;
983 double const dh = defaultRowHeight();
985 // ok, let us initialize the maxasc and maxdesc value.
986 // Only the fontsize count. The other properties
987 // are taken from the layoutfont. Nicer on the screen :)
988 Layout const & layout = par.layout();
990 // as max get the first character of this row then it can
991 // increase but not decrease the height. Just some point to
992 // start with so we don't have to do the assignment below too
994 Buffer const & buffer = bv_->buffer();
995 Font font = displayFont(pit, first);
996 FontSize const tmpsize = font.fontInfo().size();
997 font.fontInfo() = text_->layoutFont(buffer, pit);
998 FontSize const size = font.fontInfo().size();
999 font.fontInfo().setSize(tmpsize);
1001 FontInfo labelfont = text_->labelFont(buffer, par);
1003 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1004 FontMetrics const & fontmetrics = theFontMetrics(font);
1006 // these are minimum values
1007 double const spacing_val = layout.spacing.getValue()
1008 * text_->spacing(buffer, par);
1009 //lyxerr << "spacing_val = " << spacing_val << endl;
1010 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
1011 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
1013 // insets may be taller
1014 ParagraphMetrics const & pm = par_metrics_[pit];
1015 InsetList::const_iterator ii = par.insetList().begin();
1016 InsetList::const_iterator iend = par.insetList().end();
1017 for ( ; ii != iend; ++ii) {
1018 if (ii->pos >= first && ii->pos < end) {
1019 Dimension const & dim = pm.insetDimension(ii->inset);
1020 maxasc = max(maxasc, dim.ascent());
1021 maxdesc = max(maxdesc, dim.descent());
1025 // Check if any custom fonts are larger (Asger)
1026 // This is not completely correct, but we can live with the small,
1027 // cosmetic error for now.
1031 par.highestFontInRange(first, end, size);
1032 if (maxsize > font.fontInfo().size()) {
1033 // use standard paragraph font with the maximal size
1034 FontInfo maxfont = font.fontInfo();
1035 maxfont.setSize(maxsize);
1036 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
1037 maxasc = max(maxasc, maxfontmetrics.maxAscent());
1038 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
1041 // This is nicer with box insets:
1045 ParagraphList const & pars = text_->paragraphs();
1046 Inset const & inset = par.inInset();
1048 // is it a top line?
1049 if (first == 0 && topBottomSpace) {
1050 BufferParams const & bufparams = buffer.params();
1051 // some parskips VERY EASY IMPLEMENTATION
1052 if (bufparams.paragraph_separation
1053 == BufferParams::ParagraphSkipSeparation
1054 && inset.lyxCode() != ERT_CODE
1055 && inset.lyxCode() != LISTINGS_CODE
1057 && ((layout.isParagraph() && par.getDepth() == 0)
1058 || (pars[pit - 1].layout().isParagraph()
1059 && pars[pit - 1].getDepth() == 0)))
1061 maxasc += bufparams.getDefSkip().inPixels(*bv_);
1064 if (par.params().startOfAppendix())
1065 maxasc += int(3 * dh);
1067 // This is special code for the chapter, since the label of this
1068 // layout is printed in an extra row
1069 if (layout.counter == "chapter"
1070 && !par.params().labelString().empty()) {
1071 labeladdon = int(labelfont_metrics.maxHeight()
1072 * layout.spacing.getValue()
1073 * text_->spacing(buffer, par));
1076 // special code for the top label
1077 if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1078 || layout.labeltype == LABEL_BIBLIO
1079 || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1080 && isFirstInSequence(pit, pars)
1081 && !par.labelString().empty())
1084 labelfont_metrics.maxHeight()
1085 * layout.spacing.getValue()
1086 * text_->spacing(buffer, par)
1087 + (layout.topsep + layout.labelbottomsep) * dh);
1090 // Add the layout spaces, for example before and after
1091 // a section, or between the items of a itemize or enumerate
1094 pit_type prev = depthHook(pit, pars, par.getDepth());
1095 Paragraph const & prevpar = pars[prev];
1097 && prevpar.layout() == layout
1098 && prevpar.getDepth() == par.getDepth()
1099 && prevpar.getLabelWidthString()
1100 == par.getLabelWidthString()) {
1101 layoutasc = layout.itemsep * dh;
1102 } else if (pit != 0 || first != 0) {
1103 if (layout.topsep > 0)
1104 layoutasc = layout.topsep * dh;
1107 prev = outerHook(pit, pars);
1108 if (prev != pit_type(pars.size())) {
1109 maxasc += int(pars[prev].layout().parsep * dh);
1110 } else if (pit != 0) {
1111 Paragraph const & prevpar = pars[pit - 1];
1112 if (prevpar.getDepth() != 0 ||
1113 prevpar.layout() == layout) {
1114 maxasc += int(layout.parsep * dh);
1119 // is it a bottom line?
1120 if (end >= par.size() && topBottomSpace) {
1121 // add the layout spaces, for example before and after
1122 // a section, or between the items of a itemize or enumerate
1124 pit_type nextpit = pit + 1;
1125 if (nextpit != pit_type(pars.size())) {
1126 pit_type cpit = pit;
1130 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1131 usual = pars[cpit].layout().bottomsep * dh;
1132 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
1133 if (pars[cpit].layout() != pars[nextpit].layout()
1134 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1136 unusual = pars[cpit].layout().bottomsep * dh;
1138 layoutdesc = max(unusual, usual);
1139 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1140 if (pars[cpit].layout() != pars[nextpit].layout()
1141 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1142 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1147 // incalculate the layout spaces
1148 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1149 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1151 // FIXME: the correct way is to do the following is to move the
1152 // following code in another method specially tailored for the
1153 // main Text. The following test is thus bogus.
1154 // Top and bottom margin of the document (only at top-level)
1155 if (main_text_ && topBottomSpace) {
1156 if (pit == 0 && first == 0)
1158 if (pit + 1 == pit_type(pars.size()) &&
1159 end == par.size() &&
1160 !(end > 0 && par.isNewline(end - 1)))
1164 return Dimension(0, maxasc + labeladdon, maxdesc);
1168 // x is an absolute screen coord
1169 // returns the column near the specified x-coordinate of the row
1170 // x is set to the real beginning of this column
1171 pos_type TextMetrics::getColumnNearX(pit_type const pit,
1172 Row const & row, int & x, bool & boundary) const
1174 Buffer const & buffer = bv_->buffer();
1176 /// For the main Text, it is possible that this pit is not
1177 /// yet in the CoordCache when moving cursor up.
1178 /// x Paragraph coordinate is always 0 for main text anyway.
1179 int const xo = origin_.x_;
1181 Paragraph const & par = text_->getPar(pit);
1183 bidi.computeTables(par, buffer, row);
1185 pos_type vc = row.pos();
1186 pos_type end = row.endpos();
1188 Layout const & layout = par.layout();
1190 bool left_side = false;
1192 pos_type body_pos = par.beginOfBody();
1194 double tmpx = row.x;
1195 double last_tmpx = tmpx;
1198 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1201 // check for empty row
1207 while (vc < end && tmpx <= x) {
1208 c = bidi.vis2log(vc);
1210 if (body_pos > 0 && c == body_pos - 1) {
1211 FontMetrics const & fm = theFontMetrics(
1212 text_->labelFont(buffer, par));
1213 tmpx += row.label_hfill + fm.width(layout.labelsep);
1214 if (par.isLineSeparator(body_pos - 1))
1215 tmpx -= singleWidth(pit, body_pos - 1);
1218 tmpx += singleWidth(pit, c);
1219 if (par.isSeparator(c) && c >= body_pos)
1220 tmpx += row.separator;
1224 if ((tmpx + last_tmpx) / 2 > x) {
1229 LASSERT(vc <= end, /**/); // This shouldn't happen.
1232 // This (rtl_support test) is not needed, but gives
1233 // some speedup if rtl_support == false
1234 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1236 // If lastrow is false, we don't need to compute
1237 // the value of rtl.
1238 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
1240 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
1241 (!rtl && !left_side && vc == end && x > tmpx + 5))) {
1242 if (!par.isNewline(end - 1))
1244 } else if (vc == row.pos()) {
1245 c = bidi.vis2log(vc);
1246 if (bidi.level(c) % 2 == 1)
1249 c = bidi.vis2log(vc - 1);
1250 bool const rtl = (bidi.level(c) % 2 == 1);
1251 if (left_side == rtl) {
1253 boundary = isRTLBoundary(pit, c);
1257 // I believe this code is not needed anymore (Jug 20050717)
1259 // The following code is necessary because the cursor position past
1260 // the last char in a row is logically equivalent to that before
1261 // the first char in the next row. That's why insets causing row
1262 // divisions -- Newline and display-style insets -- must be treated
1263 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1264 // Newline inset, air gap below:
1265 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1266 if (bidi.level(end -1) % 2 == 0)
1267 tmpx -= singleWidth(pit, end - 1);
1269 tmpx += singleWidth(pit, end - 1);
1273 // Air gap above display inset:
1274 if (row.pos() < end && c >= end && end < par.size()
1275 && par.isInset(end) && par.getInset(end)->display()) {
1278 // Air gap below display inset:
1279 if (row.pos() < end && c >= end && par.isInset(end - 1)
1280 && par.getInset(end - 1)->display()) {
1286 pos_type const col = c - row.pos();
1288 if (!c || end == par.size())
1291 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1296 return min(col, end - 1 - row.pos());
1300 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1302 // We play safe and use parMetrics(pit) to make sure the
1303 // ParagraphMetrics will be redone and OK to use if needed.
1304 // Otherwise we would use an empty ParagraphMetrics in
1305 // upDownInText() while in selection mode.
1306 ParagraphMetrics const & pm = parMetrics(pit);
1308 LASSERT(row < int(pm.rows().size()), /**/);
1310 Row const & r = pm.rows()[row];
1311 return r.pos() + getColumnNearX(pit, r, x, bound);
1315 void TextMetrics::newParMetricsDown()
1317 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1318 pit_type const pit = last.first + 1;
1319 if (pit == int(text_->paragraphs().size()))
1322 // do it and update its position.
1324 par_metrics_[pit].setPosition(last.second.position()
1325 + last.second.descent() + par_metrics_[pit].ascent());
1329 void TextMetrics::newParMetricsUp()
1331 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1332 if (first.first == 0)
1335 pit_type const pit = first.first - 1;
1336 // do it and update its position.
1338 par_metrics_[pit].setPosition(first.second.position()
1339 - first.second.ascent() - par_metrics_[pit].descent());
1342 // y is screen coordinate
1343 pit_type TextMetrics::getPitNearY(int y)
1345 LASSERT(!text_->paragraphs().empty(), return -1);
1346 LASSERT(!par_metrics_.empty(), return -1);
1347 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1349 // look for highest numbered paragraph with y coordinate less than given y
1352 ParMetricsCache::const_iterator it = par_metrics_.begin();
1353 ParMetricsCache::const_iterator et = par_metrics_.end();
1354 ParMetricsCache::const_iterator last = et; last--;
1356 ParagraphMetrics const & pm = it->second;
1358 if (y < it->second.position() - int(pm.ascent())) {
1359 // We are looking for a position that is before the first paragraph in
1360 // the cache (which is in priciple off-screen, that is before the
1363 // We are already at the first paragraph in the inset.
1365 // OK, this is the paragraph we are looking for.
1366 pit = it->first - 1;
1371 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1373 if (y >= last->second.position() + int(pm_last.descent())) {
1374 // We are looking for a position that is after the last paragraph in
1375 // the cache (which is in priciple off-screen), that is before the
1377 pit = last->first + 1;
1378 if (pit == int(text_->paragraphs().size()))
1379 // We are already at the last paragraph in the inset.
1381 // OK, this is the paragraph we are looking for.
1382 newParMetricsDown();
1386 for (; it != et; ++it) {
1387 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1388 << " y: " << it->second.position());
1390 ParagraphMetrics const & pm = par_metrics_[it->first];
1392 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1394 yy = it->second.position();
1398 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1404 Row const & TextMetrics::getPitAndRowNearY(int y, pit_type & pit,
1405 bool assert_in_view, bool up)
1407 ParagraphMetrics const & pm = par_metrics_[pit];
1409 int yy = pm.position() - pm.ascent();
1410 LASSERT(!pm.rows().empty(), /**/);
1411 RowList::const_iterator rit = pm.rows().begin();
1412 RowList::const_iterator rlast = pm.rows().end();
1414 for (; rit != rlast; yy += rit->height(), ++rit)
1415 if (yy + rit->height() > y)
1418 if (assert_in_view && yy + rit->height() != y) {
1420 if (rit != pm.rows().begin())
1422 else if (pit != 0) {
1425 ParagraphMetrics const & pm2 = par_metrics_[pit];
1426 rit = pm2.rows().end();
1432 else if (pit != int(par_metrics_.size())) {
1434 newParMetricsDown();
1435 ParagraphMetrics const & pm2 = par_metrics_[pit];
1436 rit = pm2.rows().begin();
1444 // x,y are absolute screen coordinates
1445 // sets cursor recursively descending into nested editable insets
1446 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1447 bool assert_in_view, bool up)
1449 if (lyxerr.debugging(Debug::WORKAREA)) {
1450 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1451 cur.bv().coordCache().dump();
1453 pit_type pit = getPitNearY(y);
1454 LASSERT(pit != -1, return 0);
1456 Row const & row = getPitAndRowNearY(y, pit, assert_in_view, up);
1459 int xx = x; // is modified by getColumnNearX
1460 pos_type const pos = row.pos()
1461 + getColumnNearX(pit, row, xx, bound);
1464 cur.boundary(bound);
1467 // try to descend into nested insets
1468 Inset * inset = checkInsetHit(x, y);
1469 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1471 // Either we deconst editXY or better we move current_font
1472 // and real_current_font to Cursor
1473 // FIXME: what is needed now that current_font and real_current_font
1475 cur.setCurrentFont();
1479 ParagraphList const & pars = text_->paragraphs();
1480 Inset const * insetBefore = pos ? pars[pit].getInset(pos - 1) : 0;
1481 //Inset * insetBehind = pars[pit].getInset(pos);
1483 // This should be just before or just behind the
1484 // cursor position set above.
1485 LASSERT((pos != 0 && inset == insetBefore)
1486 || inset == pars[pit].getInset(pos), /**/);
1488 // Make sure the cursor points to the position before
1490 if (inset == insetBefore) {
1492 cur.boundary(false);
1495 // Try to descend recursively inside the inset.
1496 inset = inset->editXY(cur, x, y);
1498 if (cur.top().text() == text_)
1499 cur.setCurrentFont();
1504 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1506 LASSERT(text_ == cur.text(), /**/);
1507 pit_type pit = getPitNearY(y);
1508 LASSERT(pit != -1, return);
1510 ParagraphMetrics const & pm = par_metrics_[pit];
1512 int yy = pm.position() - pm.ascent();
1513 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1514 " pit: " << pit << " yy: " << yy);
1517 LASSERT(pm.rows().size(), /**/);
1518 for (; r < int(pm.rows().size()) - 1; ++r) {
1519 Row const & row = pm.rows()[r];
1520 if (int(yy + row.height()) > y)
1525 Row const & row = pm.rows()[r];
1527 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1531 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1533 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1535 text_->setCursor(cur, pit, pos, true, bound);
1536 // remember new position.
1541 //takes screen x,y coordinates
1542 Inset * TextMetrics::checkInsetHit(int x, int y)
1544 pit_type pit = getPitNearY(y);
1545 LASSERT(pit != -1, return 0);
1547 Paragraph const & par = text_->paragraphs()[pit];
1548 ParagraphMetrics const & pm = par_metrics_[pit];
1550 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1552 InsetList::const_iterator iit = par.insetList().begin();
1553 InsetList::const_iterator iend = par.insetList().end();
1554 for (; iit != iend; ++iit) {
1555 Inset * inset = iit->inset;
1557 LYXERR(Debug::DEBUG, "examining inset " << inset);
1559 if (!bv_->coordCache().getInsets().has(inset)) {
1560 LYXERR(Debug::DEBUG, "inset has no cached position");
1564 Dimension const & dim = pm.insetDimension(inset);
1565 Point p = bv_->coordCache().getInsets().xy(inset);
1567 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1568 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1571 && x <= p.x_ + dim.wid
1572 && y >= p.y_ - dim.asc
1573 && y <= p.y_ + dim.des) {
1574 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1579 LYXERR(Debug::DEBUG, "No inset hit. ");
1584 int TextMetrics::cursorX(CursorSlice const & sl,
1585 bool boundary) const
1587 LASSERT(sl.text() == text_, /**/);
1588 pit_type const pit = sl.pit();
1589 Paragraph const & par = text_->paragraphs()[pit];
1590 ParagraphMetrics const & pm = par_metrics_[pit];
1591 if (pm.rows().empty())
1594 pos_type ppos = sl.pos();
1595 // Correct position in front of big insets
1596 bool const boundary_correction = ppos != 0 && boundary;
1597 if (boundary_correction)
1600 Row const & row = pm.getRow(sl.pos(), boundary);
1602 pos_type cursor_vpos = 0;
1604 Buffer const & buffer = bv_->buffer();
1607 bidi.computeTables(par, buffer, row);
1609 pos_type const row_pos = row.pos();
1610 pos_type const end = row.endpos();
1611 // Spaces at logical line breaks in bidi text must be skipped during
1612 // cursor positioning. However, they may appear visually in the middle
1613 // of a row; they must be skipped, wherever they are...
1614 // * logically "abc_[HEBREW_\nHEBREW]"
1615 // * visually "abc_[_WERBEH\nWERBEH]"
1616 pos_type skipped_sep_vpos = -1;
1619 cursor_vpos = row_pos;
1620 else if (ppos >= end)
1621 cursor_vpos = text_->isRTL(buffer, par) ? row_pos : end;
1622 else if (ppos > row_pos && ppos >= end)
1623 // Place cursor after char at (logical) position pos - 1
1624 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
1625 ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
1627 // Place cursor before char at (logical) position ppos
1628 cursor_vpos = (bidi.level(ppos) % 2 == 0)
1629 ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
1631 pos_type body_pos = par.beginOfBody();
1633 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1636 // check for possible inline completion in this row
1637 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
1638 pos_type inlineCompletionVPos = -1;
1639 if (inlineCompletionPos.inTexted()
1640 && inlineCompletionPos.text() == text_
1641 && inlineCompletionPos.pit() == pit
1642 && inlineCompletionPos.pos() - 1 >= row_pos
1643 && inlineCompletionPos.pos() - 1 < end) {
1644 // draw logically behind the previous character
1645 inlineCompletionVPos = bidi.log2vis(inlineCompletionPos.pos() - 1);
1648 // Use font span to speed things up, see below
1652 // If the last logical character is a separator, skip it, unless
1653 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1654 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1655 skipped_sep_vpos = bidi.log2vis(end - 1);
1657 // Inline completion RTL special case row_pos == cursor_pos:
1658 // "__|b" => cursor_pos is right of __
1659 if (row_pos == inlineCompletionVPos && row_pos == cursor_vpos) {
1660 font = displayFont(pit, row_pos + 1);
1661 docstring const & completion = bv_->inlineCompletion();
1662 if (font.isRightToLeft() && completion.length() > 0)
1663 x += theFontMetrics(font.fontInfo()).width(completion);
1666 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1667 // Skip the separator which is at the logical end of the row
1668 if (vpos == skipped_sep_vpos)
1670 pos_type pos = bidi.vis2log(vpos);
1671 if (body_pos > 0 && pos == body_pos - 1) {
1672 FontMetrics const & labelfm = theFontMetrics(
1673 text_->labelFont(buffer, par));
1674 x += row.label_hfill + labelfm.width(par.layout().labelsep);
1675 if (par.isLineSeparator(body_pos - 1))
1676 x -= singleWidth(pit, body_pos - 1);
1679 // Use font span to speed things up, see above
1680 if (pos < font_span.first || pos > font_span.last) {
1681 font_span = par.fontSpan(pos);
1682 font = displayFont(pit, pos);
1685 x += pm.singleWidth(pos, font);
1687 // Inline completion RTL case:
1688 // "a__|b", __ of b => non-boundary a-pos is right of __
1689 if (vpos + 1 == inlineCompletionVPos
1690 && (vpos + 1 < cursor_vpos || !boundary_correction)) {
1691 font = displayFont(pit, vpos + 1);
1692 docstring const & completion = bv_->inlineCompletion();
1693 if (font.isRightToLeft() && completion.length() > 0)
1694 x += theFontMetrics(font.fontInfo()).width(completion);
1697 // Inline completion LTR case:
1698 // "b|__a", __ of b => non-boundary a-pos is in front of __
1699 if (vpos == inlineCompletionVPos
1700 && (vpos + 1 < cursor_vpos || boundary_correction)) {
1701 font = displayFont(pit, vpos);
1702 docstring const & completion = bv_->inlineCompletion();
1703 if (!font.isRightToLeft() && completion.length() > 0)
1704 x += theFontMetrics(font.fontInfo()).width(completion);
1707 if (par.isSeparator(pos) && pos >= body_pos)
1711 // see correction above
1712 if (boundary_correction) {
1713 if (isRTL(sl, boundary))
1714 x -= singleWidth(pit, ppos);
1716 x += singleWidth(pit, ppos);
1723 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1725 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1726 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1727 if (pm.rows().empty())
1731 h -= par_metrics_[0].rows()[0].ascent();
1732 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1733 h += par_metrics_[pit].height();
1736 if (pos && boundary)
1738 size_t const rend = pm.pos2row(pos);
1739 for (size_t rit = 0; rit != rend; ++rit)
1740 h += pm.rows()[rit].height();
1741 h += pm.rows()[rend].ascent();
1746 // the cursor set functions have a special mechanism. When they
1747 // realize you left an empty paragraph, they will delete it.
1749 bool TextMetrics::cursorHome(Cursor & cur)
1751 LASSERT(text_ == cur.text(), /**/);
1752 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1753 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1754 return text_->setCursor(cur, cur.pit(), row.pos());
1758 bool TextMetrics::cursorEnd(Cursor & cur)
1760 LASSERT(text_ == cur.text(), /**/);
1761 // if not on the last row of the par, put the cursor before
1762 // the final space exept if I have a spanning inset or one string
1763 // is so long that we force a break.
1764 pos_type end = cur.textRow().endpos();
1766 // empty text, end-1 is no valid position
1768 bool boundary = false;
1769 if (end != cur.lastpos()) {
1770 if (!cur.paragraph().isLineSeparator(end-1)
1771 && !cur.paragraph().isNewline(end-1))
1776 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1780 void TextMetrics::deleteLineForward(Cursor & cur)
1782 LASSERT(text_ == cur.text(), /**/);
1783 if (cur.lastpos() == 0) {
1784 // Paragraph is empty, so we just go forward
1785 text_->cursorForward(cur);
1788 cur.setSelection(true); // to avoid deletion
1791 // What is this test for ??? (JMarc)
1792 if (!cur.selection())
1793 text_->deleteWordForward(cur);
1795 cap::cutSelection(cur, true, false);
1796 cur.checkBufferStructure();
1801 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1803 ParagraphList const & pars = text_->paragraphs();
1804 return row.endpos() >= pars[pit].size()
1805 && pit + 1 == pit_type(pars.size());
1809 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1811 return row.pos() == 0 && pit == 0;
1815 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1817 LASSERT(pit >= 0, /**/);
1818 LASSERT(pit < int(text_->paragraphs().size()), /**/);
1819 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1823 int TextMetrics::leftMargin(int max_width,
1824 pit_type const pit, pos_type const pos) const
1826 ParagraphList const & pars = text_->paragraphs();
1828 LASSERT(pit >= 0, /**/);
1829 LASSERT(pit < int(pars.size()), /**/);
1830 Paragraph const & par = pars[pit];
1831 LASSERT(pos >= 0, /**/);
1832 LASSERT(pos <= par.size(), /**/);
1833 Buffer const & buffer = bv_->buffer();
1834 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1835 DocumentClass const & tclass = buffer.params().documentClass();
1836 Layout const & layout = par.layout();
1838 docstring parindent = layout.parindent;
1842 if (text_->isMainText(buffer))
1843 l_margin += bv_->leftMargin();
1845 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1846 tclass.leftmargin());
1848 if (par.getDepth() != 0) {
1849 // find the next level paragraph
1850 pit_type newpar = outerHook(pit, pars);
1851 if (newpar != pit_type(pars.size())) {
1852 if (pars[newpar].layout().isEnvironment()) {
1853 l_margin = leftMargin(max_width, newpar);
1855 if (tclass.isDefaultLayout(par.layout())
1856 || tclass.isPlainLayout(par.layout())) {
1857 if (pars[newpar].params().noindent())
1860 parindent = pars[newpar].layout().parindent;
1865 // This happens after sections in standard classes. The 1.3.x
1866 // code compared depths too, but it does not seem necessary
1868 if (tclass.isDefaultLayout(par.layout())
1869 && pit > 0 && pars[pit - 1].layout().nextnoindent)
1872 FontInfo const labelfont = text_->labelFont(buffer, par);
1873 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1875 switch (layout.margintype) {
1876 case MARGIN_DYNAMIC:
1877 if (!layout.leftmargin.empty()) {
1878 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1881 if (!par.labelString().empty()) {
1882 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1883 l_margin += labelfont_metrics.width(par.labelString());
1884 l_margin += labelfont_metrics.width(layout.labelsep);
1888 case MARGIN_MANUAL: {
1889 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1890 // The width of an empty par, even with manual label, should be 0
1891 if (!par.empty() && pos >= par.beginOfBody()) {
1892 if (!par.getLabelWidthString().empty()) {
1893 docstring labstr = par.getLabelWidthString();
1894 l_margin += labelfont_metrics.width(labstr);
1895 l_margin += labelfont_metrics.width(layout.labelsep);
1901 case MARGIN_STATIC: {
1902 l_margin += theFontMetrics(buffer.params().getFont()).
1903 signedWidth(layout.leftmargin) * 4 / (par.getDepth() + 4);
1907 case MARGIN_FIRST_DYNAMIC:
1908 if (layout.labeltype == LABEL_MANUAL) {
1909 // if we are at position 0, we are never in the body
1910 if (pos > 0 && pos >= par.beginOfBody())
1911 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1913 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1915 // Special case to fix problems with
1917 || (layout.labeltype == LABEL_STATIC
1918 && layout.latextype == LATEX_ENVIRONMENT
1919 && !isFirstInSequence(pit, pars))) {
1920 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1921 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
1922 && layout.labeltype != LABEL_BIBLIO
1923 && layout.labeltype !=
1924 LABEL_CENTERED_TOP_ENVIRONMENT) {
1925 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1926 l_margin += labelfont_metrics.width(layout.labelsep);
1927 l_margin += labelfont_metrics.width(par.labelString());
1931 case MARGIN_RIGHT_ADDRESS_BOX: {
1933 // ok, a terrible hack. The left margin depends on the widest
1934 // row in this paragraph.
1935 RowList::iterator rit = par.rows().begin();
1936 RowList::iterator end = par.rows().end();
1937 // FIXME: This is wrong.
1938 int minfill = max_width;
1939 for ( ; rit != end; ++rit)
1940 if (rit->fill() < minfill)
1941 minfill = rit->fill();
1942 l_margin += theFontMetrics(params.getFont()).signedWidth(layout.leftmargin);
1943 l_margin += minfill;
1945 // also wrong, but much shorter.
1946 l_margin += max_width / 2;
1951 if (!par.params().leftIndent().zero())
1952 l_margin += par.params().leftIndent().inPixels(max_width);
1956 if (par.params().align() == LYX_ALIGN_LAYOUT)
1957 align = layout.align;
1959 align = par.params().align();
1961 // set the correct parindent
1963 && (layout.labeltype == LABEL_NO_LABEL
1964 || layout.labeltype == LABEL_TOP_ENVIRONMENT
1965 || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
1966 || (layout.labeltype == LABEL_STATIC
1967 && layout.latextype == LATEX_ENVIRONMENT
1968 && !isFirstInSequence(pit, pars)))
1969 && align == LYX_ALIGN_BLOCK
1970 && !par.params().noindent()
1971 // in some insets, paragraphs are never indented
1972 && !par.inInset().neverIndent()
1973 // display style insets are always centered, omit indentation
1976 && par.getInset(pos)->display())
1977 && (!(tclass.isDefaultLayout(par.layout())
1978 || tclass.isPlainLayout(par.layout()))
1979 || buffer.params().paragraph_separation == BufferParams::ParagraphIndentSeparation)
1982 // use the parindent of the layout when the default indentation is used
1983 // otherwise use the indentation set in the document settings
1984 if (buffer.params().getIndentation().asLyXCommand() == "default")
1985 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1988 l_margin += buffer.params().getIndentation().inPixels(*bv_);
1995 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
1997 ParagraphMetrics const & pm = par_metrics_[pit];
1999 return pm.singleWidth(pos, displayFont(pit, pos));
2003 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
2005 if (par_metrics_.empty())
2011 ParMetricsCache::iterator it = par_metrics_.begin();
2012 ParMetricsCache::iterator const pm_end = par_metrics_.end();
2013 y -= it->second.ascent();
2014 for (; it != pm_end; ++it) {
2015 ParagraphMetrics const & pmi = it->second;
2017 pit_type const pit = it->first;
2018 // Save the paragraph position in the cache.
2019 it->second.setPosition(y);
2020 drawParagraph(pi, pit, x, y);
2026 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
2028 BufferParams const & bparams = bv_->buffer().params();
2029 ParagraphMetrics const & pm = par_metrics_[pit];
2030 if (pm.rows().empty())
2034 bool const original_drawing_state = pi.pain.isDrawingEnabled();
2035 int const ww = bv_->workHeight();
2036 size_t const nrows = pm.rows().size();
2038 Cursor const & cur = bv_->cursor();
2039 DocIterator sel_beg = cur.selectionBegin();
2040 DocIterator sel_end = cur.selectionEnd();
2041 bool selection = cur.selection()
2042 // This is our text.
2043 && cur.text() == text_
2044 // if the anchor is outside, this is not our selection
2045 && cur.anchor().text() == text_
2046 && pit >= sel_beg.pit() && pit <= sel_end.pit();
2048 // We store the begin and end pos of the selection relative to this par
2049 DocIterator sel_beg_par = cur.selectionBegin();
2050 DocIterator sel_end_par = cur.selectionEnd();
2052 // We care only about visible selection.
2054 if (pit != sel_beg.pit()) {
2055 sel_beg_par.pit() = pit;
2056 sel_beg_par.pos() = 0;
2058 if (pit != sel_end.pit()) {
2059 sel_end_par.pit() = pit;
2060 sel_end_par.pos() = sel_end_par.lastpos();
2064 for (size_t i = 0; i != nrows; ++i) {
2066 Row const & row = pm.rows()[i];
2070 bool const inside = (y + row.descent() >= 0
2071 && y - row.ascent() < ww);
2072 // It is not needed to draw on screen if we are not inside.
2073 pi.pain.setDrawingEnabled(inside && original_drawing_state);
2074 RowPainter rp(pi, *text_, pit, row, bidi, x, y);
2077 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
2079 row.setSelection(-1, -1);
2081 // The row knows nothing about the paragraph, so we have to check
2082 // whether this row is the first or last and update the margins.
2083 if (row.selection()) {
2084 if (row.sel_beg == 0)
2085 row.begin_margin_sel = sel_beg.pit() < pit;
2086 if (row.sel_end == sel_end_par.lastpos())
2087 row.end_margin_sel = sel_end.pit() > pit;
2090 // Row signature; has row changed since last paint?
2091 row.setCrc(pm.computeRowSignature(row, bparams));
2092 bool row_has_changed = row.changed();
2094 // Don't paint the row if a full repaint has not been requested
2095 // and if it has not changed.
2096 if (!pi.full_repaint && !row_has_changed) {
2097 // Paint only the insets if the text itself is
2099 rp.paintOnlyInsets();
2104 // Clear background of this row if paragraph background was not
2105 // already cleared because of a full repaint.
2106 if (!pi.full_repaint && row_has_changed) {
2107 pi.pain.fillRectangle(x, y - row.ascent(),
2108 width(), row.height(), pi.background_color);
2111 if (row.selection())
2112 drawRowSelection(pi, x, row, cur, pit);
2114 // Instrumentation for testing row cache (see also
2116 if (lyxerr.debugging(Debug::PAINTING) && inside
2117 && (row.selection() || pi.full_repaint || row_has_changed)) {
2118 string const foreword = text_->isMainText(bv_->buffer()) ?
2119 "main text redraw " : "inset text redraw: ";
2120 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
2121 << " row_selection=" << row.selection()
2122 << " full_repaint=" << pi.full_repaint
2123 << " row_has_changed=" << row_has_changed);
2126 // Backup full_repaint status and force full repaint
2127 // for inner insets as the Row has been cleared out.
2128 bool tmp = pi.full_repaint;
2129 pi.full_repaint = true;
2132 rp.paintChangeBar();
2139 // Restore full_repaint status.
2140 pi.full_repaint = tmp;
2142 // Re-enable screen drawing for future use of the painter.
2143 pi.pain.setDrawingEnabled(original_drawing_state);
2145 //LYXERR(Debug::PAINTING, ".");
2149 void TextMetrics::drawRowSelection(PainterInfo & pi, int x, Row const & row,
2150 Cursor const & curs, pit_type pit) const
2152 DocIterator beg = curs.selectionBegin();
2154 beg.pos() = row.sel_beg;
2156 DocIterator end = curs.selectionEnd();
2158 end.pos() = row.sel_end;
2160 bool const begin_boundary = beg.pos() >= row.endpos();
2161 bool const end_boundary = row.sel_end == row.endpos();
2163 Buffer & buffer = bv_->buffer();
2164 DocIterator cur = beg;
2165 cur.boundary(begin_boundary);
2166 int x1 = cursorX(beg.top(), begin_boundary);
2167 int x2 = cursorX(end.top(), end_boundary);
2168 int const y1 = bv_->getPos(cur, cur.boundary()).y_ - row.ascent();
2169 int const y2 = y1 + row.height();
2171 int const rm = text_->isMainText(buffer) ? bv_->rightMargin() : 0;
2172 int const lm = text_->isMainText(buffer) ? bv_->leftMargin() : 0;
2175 if (row.begin_margin_sel) {
2176 if (text_->isRTL(buffer, beg.paragraph())) {
2177 pi.pain.fillRectangle(x + x1, y1, width() - rm - x1, y2 - y1,
2180 pi.pain.fillRectangle(x + lm, y1, x1 - lm, y2 - y1,
2185 if (row.end_margin_sel) {
2186 if (text_->isRTL(buffer, beg.paragraph())) {
2187 pi.pain.fillRectangle(x + lm, y1, x2 - lm, y2 - y1,
2190 pi.pain.fillRectangle(x + x2, y1, width() - rm - x2, y2 - y1,
2195 // if we are on a boundary from the beginning, it's probably
2196 // a RTL boundary and we jump to the other side directly as this
2197 // segement is 0-size and confuses the logic below
2199 cur.boundary(false);
2201 // go through row and draw from RTL boundary to RTL boundary
2203 bool drawNow = false;
2205 // simplified cursorForward code below which does not
2206 // descend into insets and which does not go into the
2207 // next line. Compare the logic with the original cursorForward
2209 // if left of boundary -> just jump to right side, but
2210 // for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
2211 if (cur.boundary()) {
2212 cur.boundary(false);
2213 } else if (isRTLBoundary(cur.pit(), cur.pos() + 1)) {
2214 // in front of RTL boundary -> Stay on this side of the boundary
2215 // because: ab|cDDEEFFghi -> abc|DDEEFFghi
2224 if (cur.pos() == row.endpos())
2229 // the previous segment was just drawn, now the next starts
2230 x1 = cursorX(cur.top(), cur.boundary());
2233 if (!(cur < end) || drawNow) {
2234 x2 = cursorX(cur.top(), cur.boundary());
2235 pi.pain.fillRectangle(x + min(x1,x2), y1, abs(x2 - x1), y2 - y1,
2238 // reset x1, so it is set again next round (which will be on the
2239 // right side of a boundary or at the selection end)
2246 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
2247 Dimension & dim) const
2249 Cursor const & bvcur = cur.bv().cursor();
2251 // get word in front of cursor
2252 docstring word = text_->previousWord(bvcur.top());
2253 DocIterator wordStart = bvcur;
2254 wordStart.pos() -= word.length();
2256 // get position on screen of the word start and end
2257 Point lxy = cur.bv().getPos(wordStart, false);
2258 Point rxy = cur.bv().getPos(bvcur, bvcur.boundary());
2260 // calculate dimensions of the word
2261 dim = rowHeight(bvcur.pit(), wordStart.pos(), bvcur.pos(), false);
2262 dim.wid = abs(rxy.x_ - lxy.x_);
2264 // calculate position of word
2266 x = min(rxy.x_, lxy.x_);
2268 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2269 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2272 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2274 // ParagraphMetrics const & pm = par_metrics_[pit];
2275 // Row const & r = pm.rows()[row];
2281 int defaultRowHeight()
2283 return int(theFontMetrics(sane_font).maxHeight() * 1.2);