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"
31 #include "InsetList.h"
35 #include "MetricsInfo.h"
36 #include "ParagraphParameters.h"
37 #include "ParIterator.h"
38 #include "rowpainter.h"
40 #include "TextClass.h"
42 #include "WordLangTuple.h"
44 #include "insets/InsetText.h"
46 #include "mathed/MacroTable.h"
47 #include "mathed/MathMacroTemplate.h"
49 #include "frontends/FontMetrics.h"
50 #include "frontends/Painter.h"
52 #include "support/debug.h"
53 #include "support/docstring_list.h"
54 #include "support/lassert.h"
63 using frontend::FontMetrics;
65 static int numberOfSeparators(Paragraph const & par, Row const & row)
67 pos_type const first = max(row.pos(), par.beginOfBody());
68 pos_type const last = row.endpos() - 1;
70 for (pos_type p = first; p < last; ++p) {
71 if (par.isSeparator(p))
78 static int numberOfLabelHfills(Paragraph const & par, Row const & row)
80 pos_type last = row.endpos() - 1;
81 pos_type first = row.pos();
83 // hfill *DO* count at the beginning of paragraphs!
85 while (first < last && par.isHfill(first))
89 last = min(last, par.beginOfBody());
91 for (pos_type p = first; p < last; ++p) {
99 static int numberOfHfills(Paragraph const & par, Row const & row)
101 pos_type const last = row.endpos();
102 pos_type first = row.pos();
104 // hfill *DO* count at the beginning of paragraphs!
106 while (first < last && par.isHfill(first))
110 first = max(first, par.beginOfBody());
113 for (pos_type p = first; p < last; ++p) {
121 /////////////////////////////////////////////////////////////////////
125 /////////////////////////////////////////////////////////////////////
128 TextMetrics::TextMetrics(BufferView * bv, Text * text)
129 : bv_(bv), text_(text)
132 max_width_ = bv_->workWidth();
133 dim_.wid = max_width_;
139 bool TextMetrics::contains(pit_type pit) const
141 return par_metrics_.find(pit) != par_metrics_.end();
145 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
147 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
152 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
154 ParMetricsCache::const_iterator it = par_metrics_.begin();
155 return make_pair(it->first, &it->second);
159 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
161 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
162 return make_pair(it->first, &it->second);
166 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
168 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
169 if (pmc_it == par_metrics_.end()) {
170 pmc_it = par_metrics_.insert(
171 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
173 if (pmc_it->second.rows().empty() && redo)
175 return pmc_it->second;
179 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
181 LASSERT(mi.base.textwidth > 0, /**/);
182 max_width_ = mi.base.textwidth;
183 // backup old dimension.
184 Dimension const old_dim = dim_;
187 dim_.wid = min_width;
188 pit_type const npar = text_->paragraphs().size();
190 // If there is more than one row, expand the text to
191 // the full allowable width.
192 dim_.wid = max_width_;
194 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
195 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
197 bool changed = false;
199 for (pit_type pit = 0; pit != npar; ++pit) {
200 changed |= redoParagraph(pit);
201 ParagraphMetrics const & pm = par_metrics_[pit];
203 if (dim_.wid < pm.width())
204 dim_.wid = pm.width();
207 dim_.asc = par_metrics_[0].ascent();
208 dim_.des = h - dim_.asc;
209 //lyxerr << "dim_.wid " << dim_.wid << endl;
210 //lyxerr << "dim_.asc " << dim_.asc << endl;
211 //lyxerr << "dim_.des " << dim_.des << endl;
213 changed |= dim_ != old_dim;
219 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
221 return main_text_? pm.rightMargin(*bv_) : 0;
225 int TextMetrics::rightMargin(pit_type const pit) const
227 return main_text_? par_metrics_[pit].rightMargin(*bv_) : 0;
231 void TextMetrics::applyOuterFont(Font & font) const
233 FontInfo lf(font_.fontInfo());
234 lf.reduce(bv_->buffer().params().getFont().fontInfo());
235 font.fontInfo().realize(lf);
239 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
241 LASSERT(pos >= 0, /**/);
243 ParagraphList const & pars = text_->paragraphs();
244 Paragraph const & par = pars[pit];
245 Layout const & layout = par.layout();
246 Buffer const & buffer = bv_->buffer();
248 BufferParams const & params = buffer.params();
249 pos_type const body_pos = par.beginOfBody();
251 // We specialize the 95% common case:
252 if (!par.getDepth()) {
253 Font f = par.getFontSettings(params, pos);
254 if (!text_->isMainText())
256 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
258 FontInfo const & lf = lab ? layout.labelfont : layout.font;
259 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
261 // In case the default family has been customized
262 if (lf.family() == INHERIT_FAMILY)
263 rlf.setFamily(params.getFont().fontInfo().family());
264 f.fontInfo().realize(rlf);
268 // The uncommon case need not be optimized as much
269 FontInfo const & layoutfont = pos < body_pos ?
270 layout.labelfont : layout.font;
272 Font font = par.getFontSettings(params, pos);
273 font.fontInfo().realize(layoutfont);
275 if (!text_->isMainText())
276 applyOuterFont(font);
278 // Realize against environment font information
279 // NOTE: the cast to pit_type should be removed when pit_type
280 // changes to a unsigned integer.
281 if (pit < pit_type(pars.size()))
282 font.fontInfo().realize(text_->outerFont(pit).fontInfo());
284 // Realize with the fonts of lesser depth.
285 font.fontInfo().realize(params.getFont().fontInfo());
291 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
293 if (!lyxrc.rtl_support || !sl.text())
297 if (boundary && sl.pos() > 0)
300 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
304 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
306 // no RTL boundary at paragraph start
307 if (!lyxrc.rtl_support || pos == 0)
310 Font const & left_font = displayFont(pit, pos - 1);
312 return isRTLBoundary(pit, pos, left_font);
316 // isRTLBoundary returns false on a real end-of-line boundary,
317 // because otherwise the two boundary types get mixed up.
318 // This is the whole purpose of this being in TextMetrics.
319 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
320 Font const & font) const
322 if (!lyxrc.rtl_support
323 // no RTL boundary at paragraph start
325 // if the metrics have not been calculated, then we are not
326 // on screen and can safely ignore issues about boundaries.
330 ParagraphMetrics & pm = par_metrics_[pit];
331 // no RTL boundary in empty paragraph
332 if (pm.rows().empty())
335 pos_type endpos = pm.getRow(pos - 1, false).endpos();
336 pos_type startpos = pm.getRow(pos, false).pos();
337 // no RTL boundary at line start:
338 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
340 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
343 Paragraph const & par = text_->getPar(pit);
344 // no RTL boundary at line break:
345 // abc|\n -> move right -> abc\n (and not: abc\n|
347 if (startpos == pos && endpos == pos && endpos != par.size()
348 && (par.isNewline(pos - 1)
349 || par.isLineSeparator(pos - 1)
350 || par.isSeparator(pos - 1)))
353 bool left = font.isVisibleRightToLeft();
355 if (pos == par.size())
356 right = par.isRTL(bv_->buffer().params());
358 right = displayFont(pit, pos).isVisibleRightToLeft();
360 return left != right;
364 bool TextMetrics::redoParagraph(pit_type const pit)
366 Paragraph & par = text_->getPar(pit);
367 // IMPORTANT NOTE: We pass 'false' explicitly in order to not call
368 // redoParagraph() recursively inside parMetrics.
369 Dimension old_dim = parMetrics(pit, false).dim();
370 ParagraphMetrics & pm = par_metrics_[pit];
373 Buffer & buffer = bv_->buffer();
374 main_text_ = (text_ == &buffer.text());
375 bool changed = false;
377 // Optimisation: this is used in the next two loops
378 // so better to calculate that once here.
379 int const right_margin = rightMargin(pm);
381 // iterator pointing to paragraph to resolve macros
382 DocIterator parPos = text_->macrocontextPosition();
386 LYXERR(Debug::INFO, "MacroContext not initialised!"
387 << " Going through the buffer again and hope"
388 << " the context is better then.");
389 // FIXME audit updateBuffer calls
390 // This should not be here, but it is not clear yet where else it
392 bv_->buffer().updateBuffer();
393 parPos = text_->macrocontextPosition();
394 LASSERT(!parPos.empty(), /**/);
399 Font const bufferfont = buffer.params().getFont();
400 InsetList::const_iterator ii = par.insetList().begin();
401 InsetList::const_iterator iend = par.insetList().end();
402 for (; ii != iend; ++ii) {
403 // position already initialized?
404 if (!parPos.empty()) {
405 parPos.pos() = ii->pos;
407 // A macro template would normally not be visible
408 // by itself. But the tex macro semantics allow
409 // recursion, so we artifically take the context
410 // after the macro template to simulate this.
411 if (ii->inset->lyxCode() == MATHMACRO_CODE)
415 // do the metric calculation
417 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
419 Font const & font = ii->inset->inheritFont() ?
420 displayFont(pit, ii->pos) : bufferfont;
421 MacroContext mc(&buffer, parPos);
422 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
423 ii->inset->metrics(mi, dim);
424 Dimension const old_dim = pm.insetDimension(ii->inset);
425 if (old_dim != dim) {
426 pm.setInsetDimension(ii->inset, dim);
431 par.setBeginOfBody();
433 size_t row_index = 0;
434 // maximum pixel width of a row
435 int width = max_width_ - right_margin; // - leftMargin(max_width_, pit, row);
438 pos_type end = rowBreakPoint(width, pit, first);
439 if (row_index || end < par.size())
440 // If there is more than one row, expand the text to
441 // the full allowable width. This setting here is needed
442 // for the computeRowMetrics() below.
443 dim_.wid = max_width_;
445 dim = rowHeight(pit, first, end);
446 dim.wid = rowWidth(right_margin, pit, first, end);
447 if (row_index == pm.rows().size())
448 pm.rows().push_back(Row());
449 Row & row = pm.rows()[row_index];
450 row.setChanged(false);
453 row.setDimension(dim);
454 int const max_row_width = max(dim_.wid, dim.wid);
455 computeRowMetrics(pit, row, max_row_width);
459 pm.dim().wid = max(pm.dim().wid, dim.wid);
460 pm.dim().des += dim.height();
461 } while (first < par.size());
463 if (row_index < pm.rows().size())
464 pm.rows().resize(row_index);
466 // Make sure that if a par ends in newline, there is one more row
468 if (first > 0 && par.isNewline(first - 1)) {
469 Dimension dim = rowHeight(pit, first, first);
470 dim.wid = rowWidth(right_margin, pit, first, first);
471 if (row_index == pm.rows().size())
472 pm.rows().push_back(Row());
473 Row & row = pm.rows()[row_index];
474 row.setChanged(false);
477 row.setDimension(dim);
478 int const max_row_width = max(dim_.wid, dim.wid);
479 computeRowMetrics(pit, row, max_row_width);
480 pm.dim().des += dim.height();
483 pm.dim().asc += pm.rows()[0].ascent();
484 pm.dim().des -= pm.rows()[0].ascent();
486 changed |= old_dim.height() != pm.dim().height();
492 void TextMetrics::computeRowMetrics(pit_type const pit,
493 Row & row, int width) const
498 Paragraph const & par = text_->getPar(pit);
500 double w = width - row.width();
501 // FIXME: put back this assertion when the crash on new doc is solved.
502 //LASSERT(w >= 0, /**/);
504 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
505 //lyxerr << "row.width() " << row.width() << endl;
506 //lyxerr << "w " << w << endl;
508 bool const is_rtl = text_->isRTL(par);
510 row.x = rightMargin(pit);
512 row.x = leftMargin(max_width_, pit, row.pos());
514 // is there a manual margin with a manual label
515 Layout const & layout = par.layout();
517 if (layout.margintype == MARGIN_MANUAL
518 && layout.labeltype == LABEL_MANUAL) {
519 /// We might have real hfills in the label part
520 int nlh = numberOfLabelHfills(par, row);
522 // A manual label par (e.g. List) has an auto-hfill
523 // between the label text and the body of the
525 // But we don't want to do this auto hfill if the par
530 if (nlh && !par.getLabelWidthString().empty())
531 row.label_hfill = labelFill(pit, row) / double(nlh);
535 // are there any hfills in the row?
536 if (int const nh = numberOfHfills(par, row)) {
538 hfill = w / double(nh);
539 // we don't have to look at the alignment if it is ALIGN_LEFT and
540 // if the row is already larger then the permitted width as then
541 // we force the LEFT_ALIGN'edness!
542 } else if (int(row.width()) < max_width_) {
543 // is it block, flushleft or flushright?
544 // set x how you need it
546 if (par.params().align() == LYX_ALIGN_LAYOUT)
547 align = layout.align;
549 align = par.params().align();
551 // handle alignment inside tabular cells
552 Inset const & owner = text_->inset();
553 switch (owner.contentAlignment()) {
554 case LYX_ALIGN_CENTER:
556 case LYX_ALIGN_RIGHT:
557 if (align == LYX_ALIGN_NONE
558 || align == LYX_ALIGN_BLOCK)
559 align = owner.contentAlignment();
562 // unchanged (use align)
566 // Display-style insets should always be on a centered row
567 if (Inset const * inset = par.getInset(row.pos())) {
568 switch (inset->display()) {
569 case Inset::AlignLeft:
570 align = LYX_ALIGN_BLOCK;
572 case Inset::AlignCenter:
573 align = LYX_ALIGN_CENTER;
576 // unchanged (use align)
578 case Inset::AlignRight:
579 align = LYX_ALIGN_RIGHT;
585 case LYX_ALIGN_BLOCK: {
586 int const ns = numberOfSeparators(par, row);
587 bool disp_inset = false;
588 if (row.endpos() < par.size()) {
589 Inset const * in = par.getInset(row.endpos());
591 disp_inset = in->display();
593 // If we have separators, this is not the last row of a
594 // par, does not end in newline, and is not row above a
595 // display inset... then stretch it
597 && row.endpos() < par.size()
598 && !par.isNewline(row.endpos() - 1)
601 row.separator = w / ns;
602 //lyxerr << "row.separator " << row.separator << endl;
603 //lyxerr << "ns " << ns << endl;
609 case LYX_ALIGN_RIGHT:
612 case LYX_ALIGN_CENTER:
619 pos_type body_pos = par.beginOfBody();
620 pos_type end = row.endpos();
623 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
625 row.x += theFontMetrics(text_->labelFont(par)).
626 width(layout.labelsep);
628 row.x += row.label_hfill;
632 pos_type const endpos = row.endpos();
633 pos_type body_pos = par.beginOfBody();
635 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
638 ParagraphMetrics & pm = par_metrics_[pit];
639 InsetList::const_iterator ii = par.insetList().begin();
640 InsetList::const_iterator iend = par.insetList().end();
641 for ( ; ii != iend; ++ii) {
642 if (ii->pos >= endpos || ii->pos < row.pos()
643 || (ii->inset->lyxCode() != SPACE_CODE ||
644 !ii->inset->isStretchableSpace()))
646 Dimension dim = row.dimension();
647 if (pm.hfillExpansion(row, ii->pos))
648 dim.wid = int(ii->pos >= body_pos ?
649 max(hfill, 5.0) : row.label_hfill);
652 // Cache the inset dimension.
653 bv_->coordCache().insets().add(ii->inset, dim);
654 pm.setInsetDimension(ii->inset, dim);
659 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
661 Paragraph const & par = text_->getPar(pit);
663 pos_type last = par.beginOfBody();
664 LASSERT(last > 0, /**/);
666 // -1 because a label ends with a space that is in the label
669 // a separator at this end does not count
670 if (par.isLineSeparator(last))
674 for (pos_type i = row.pos(); i <= last; ++i)
675 w += singleWidth(pit, i);
677 docstring const & label = par.params().labelWidthString();
681 FontMetrics const & fm
682 = theFontMetrics(text_->labelFont(par));
684 return max(0, fm.width(label) - w);
688 // this needs special handling - only newlines count as a break point
689 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
691 pos_type const end = par.size();
694 if (par.isNewline(i))
701 int TextMetrics::labelEnd(pit_type const pit) const
703 // labelEnd is only needed if the layout fills a flushleft label.
704 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
706 // return the beginning of the body
707 return leftMargin(max_width_, pit);
713 * Calling Text::getFont is slow. While rebreaking we scan a
714 * paragraph from left to right calling getFont for every char. This
715 * simple class address this problem by hidding an optimization trick
716 * (not mine btw -AB): the font is reused in the whole font span. The
717 * class handles transparently the "hidden" (not part of the fontlist)
718 * label font (as getFont does).
724 FontIterator(TextMetrics const & tm,
725 Paragraph const & par, pit_type pit, pos_type pos)
726 : tm_(tm), par_(par), pit_(pit), pos_(pos),
727 font_(tm.displayFont(pit, pos)),
728 endspan_(par.fontSpan(pos).last),
729 bodypos_(par.beginOfBody())
733 Font const & operator*() const { return font_; }
736 FontIterator & operator++()
739 if (pos_ > endspan_ || pos_ == bodypos_) {
740 font_ = tm_.displayFont(pit_, pos_);
741 endspan_ = par_.fontSpan(pos_).last;
747 Font * operator->() { return &font_; }
751 TextMetrics const & tm_;
753 Paragraph const & par_;
768 pos_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
771 ParagraphMetrics const & pm = par_metrics_[pit];
772 Paragraph const & par = text_->getPar(pit);
773 pos_type const end = par.size();
774 if (pos == end || width < 0)
777 Layout const & layout = par.layout();
779 if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX)
780 return addressBreakPoint(pos, par);
782 pos_type const body_pos = par.beginOfBody();
784 // check for possible inline completion
785 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
786 pos_type inlineCompletionLPos = -1;
787 if (inlineCompletionPos.inTexted()
788 && inlineCompletionPos.text() == text_
789 && inlineCompletionPos.pit() == pit) {
790 // draw logically behind the previous character
791 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
794 // Now we iterate through until we reach the right margin
795 // or the end of the par, then choose the possible break
798 int label_end = labelEnd(pit);
799 int const left = leftMargin(max_width_, pit, pos);
802 // pixel width since last breakpoint
805 docstring const s(1, char_type(0x00B6));
807 int par_marker_width = theFontMetrics(f).width(s);
809 FontIterator fi = FontIterator(*this, par, pit, pos);
810 pos_type point = end;
813 ParagraphList const & pars_ = text_->paragraphs();
814 bool const draw_par_end_marker = lyxrc.paragraph_markers
815 && size_type(pit + 1) < pars_.size();
817 for ( ; i < end; ++i, ++fi) {
818 int thiswidth = pm.singleWidth(i, *fi);
820 if (draw_par_end_marker && i == end - 1)
821 // enlarge the last character to hold the end-of-par marker
822 thiswidth += par_marker_width;
824 // add inline completion width
825 if (inlineCompletionLPos == i) {
826 docstring const & completion = bv_->inlineCompletion();
827 if (completion.length() > 0)
828 thiswidth += theFontMetrics(*fi).width(completion);
831 // add the auto-hfill from label end to the body
832 if (body_pos && i == body_pos) {
833 FontMetrics const & fm = theFontMetrics(
834 text_->labelFont(par));
835 int add = fm.width(layout.labelsep);
836 if (par.isLineSeparator(i - 1))
837 add -= singleWidth(pit, i - 1);
839 add = max(add, label_end - x);
844 chunkwidth += thiswidth;
846 // break before a character that will fall off
847 // the right of the row
849 // if no break before, break here
850 if (point == end || chunkwidth >= width - left) {
856 // exit on last registered breakpoint:
860 if (par.isNewline(i)) {
864 Inset const * inset = 0;
867 if ((inset = par.getInset(i + 1)) && inset->display()) {
872 if ((inset = par.getInset(i)) && inset->display()) {
878 inset = par.getInset(i);
879 if (!inset || inset->isChar()) {
880 // some insets are line separators too
881 if (par.isLineSeparator(i)) {
882 // register breakpoint:
889 // maybe found one, but the par is short enough.
890 if (i == end && x < width)
893 // manual labels cannot be broken in LaTeX. But we
894 // want to make our on-screen rendering of footnotes
896 if (body_pos && point < body_pos)
903 int TextMetrics::rowWidth(int right_margin, pit_type const pit,
904 pos_type const first, pos_type const end) const
906 // get the pure distance
907 ParagraphMetrics const & pm = par_metrics_[pit];
908 Paragraph const & par = text_->getPar(pit);
909 int w = leftMargin(max_width_, pit, first);
910 int label_end = labelEnd(pit);
912 // check for possible inline completion
913 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
914 pos_type inlineCompletionLPos = -1;
915 if (inlineCompletionPos.inTexted()
916 && inlineCompletionPos.text() == text_
917 && inlineCompletionPos.pit() == pit) {
918 // draw logically behind the previous character
919 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
922 pos_type const body_pos = par.beginOfBody();
926 FontIterator fi = FontIterator(*this, par, pit, i);
927 for ( ; i < end; ++i, ++fi) {
928 if (body_pos > 0 && i == body_pos) {
929 FontMetrics const & fm = theFontMetrics(
930 text_->labelFont(par));
931 w += fm.width(par.layout().labelsep);
932 if (par.isLineSeparator(i - 1))
933 w -= singleWidth(pit, i - 1);
934 w = max(w, label_end);
937 // a line separator at the end of a line (but not at the end of a
938 // paragraph) will not be drawn and should therefore not count for
940 if (!par.isLineSeparator(i) || i != end - 1 || end == par.size())
941 w += pm.singleWidth(i, *fi);
943 // add inline completion width
944 if (inlineCompletionLPos == i) {
945 docstring const & completion = bv_->inlineCompletion();
946 if (completion.length() > 0)
947 w += theFontMetrics(*fi).width(completion);
952 // count the paragraph end marker.
953 if (end == par.size() && lyxrc.paragraph_markers) {
954 ParagraphList const & pars_ = text_->paragraphs();
955 if (size_type(pit + 1) < pars_.size()) {
956 // enlarge the last character to hold the
958 docstring const s(1, char_type(0x00B6));
960 w += theFontMetrics(f).width(s);
964 if (body_pos > 0 && body_pos >= end) {
965 FontMetrics const & fm = theFontMetrics(
966 text_->labelFont(par));
967 w += fm.width(par.layout().labelsep);
968 if (end > 0 && par.isLineSeparator(end - 1))
969 w -= singleWidth(pit, end - 1);
970 w = max(w, label_end);
973 return w + right_margin;
977 Dimension TextMetrics::rowHeight(pit_type const pit, pos_type const first,
978 pos_type const end, bool topBottomSpace) const
980 Paragraph const & par = text_->getPar(pit);
981 // get the maximum ascent and the maximum descent
982 double layoutasc = 0;
983 double layoutdesc = 0;
984 double const dh = defaultRowHeight();
986 // ok, let us initialize the maxasc and maxdesc value.
987 // Only the fontsize count. The other properties
988 // are taken from the layoutfont. Nicer on the screen :)
989 Layout const & layout = par.layout();
991 // as max get the first character of this row then it can
992 // increase but not decrease the height. Just some point to
993 // start with so we don't have to do the assignment below too
995 Buffer const & buffer = bv_->buffer();
996 Font font = displayFont(pit, first);
997 FontSize const tmpsize = font.fontInfo().size();
998 font.fontInfo() = text_->layoutFont(pit);
999 FontSize const size = font.fontInfo().size();
1000 font.fontInfo().setSize(tmpsize);
1002 FontInfo labelfont = text_->labelFont(par);
1004 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1005 FontMetrics const & fontmetrics = theFontMetrics(font);
1007 // these are minimum values
1008 double const spacing_val = layout.spacing.getValue()
1009 * text_->spacing(par);
1010 //lyxerr << "spacing_val = " << spacing_val << endl;
1011 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
1012 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
1014 // insets may be taller
1015 ParagraphMetrics const & pm = par_metrics_[pit];
1016 InsetList::const_iterator ii = par.insetList().begin();
1017 InsetList::const_iterator iend = par.insetList().end();
1018 for ( ; ii != iend; ++ii) {
1019 if (ii->pos >= first && ii->pos < end) {
1020 Dimension const & dim = pm.insetDimension(ii->inset);
1021 maxasc = max(maxasc, dim.ascent());
1022 maxdesc = max(maxdesc, dim.descent());
1026 // Check if any custom fonts are larger (Asger)
1027 // This is not completely correct, but we can live with the small,
1028 // cosmetic error for now.
1032 par.highestFontInRange(first, end, size);
1033 if (maxsize > font.fontInfo().size()) {
1034 // use standard paragraph font with the maximal size
1035 FontInfo maxfont = font.fontInfo();
1036 maxfont.setSize(maxsize);
1037 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
1038 maxasc = max(maxasc, maxfontmetrics.maxAscent());
1039 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
1042 // This is nicer with box insets:
1046 ParagraphList const & pars = text_->paragraphs();
1047 Inset const & inset = text_->inset();
1049 // is it a top line?
1050 if (first == 0 && topBottomSpace) {
1051 BufferParams const & bufparams = buffer.params();
1052 // some parskips VERY EASY IMPLEMENTATION
1053 if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
1054 && !inset.getLayout().parbreakIsNewline()
1055 && !par.layout().parbreak_is_newline
1057 && ((layout.isParagraph() && par.getDepth() == 0)
1058 || (pars[pit - 1].layout().isParagraph()
1059 && pars[pit - 1].getDepth() == 0))) {
1060 maxasc += bufparams.getDefSkip().inPixels(*bv_);
1063 if (par.params().startOfAppendix())
1064 maxasc += int(3 * dh);
1066 // This is special code for the chapter, since the label of this
1067 // layout is printed in an extra row
1068 if (layout.counter == "chapter"
1069 && !par.params().labelString().empty()) {
1070 labeladdon = int(labelfont_metrics.maxHeight()
1071 * layout.spacing.getValue()
1072 * text_->spacing(par));
1075 // special code for the top label
1076 if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1077 || layout.labeltype == LABEL_BIBLIO
1078 || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1079 && text_->isFirstInSequence(pit)
1080 && !par.labelString().empty())
1083 labelfont_metrics.maxHeight()
1084 * layout.spacing.getValue()
1085 * text_->spacing(par)
1086 + (layout.topsep + layout.labelbottomsep) * dh);
1089 // Add the layout spaces, for example before and after
1090 // a section, or between the items of a itemize or enumerate
1093 pit_type prev = text_->depthHook(pit, par.getDepth());
1094 Paragraph const & prevpar = pars[prev];
1096 && prevpar.layout() == layout
1097 && prevpar.getDepth() == par.getDepth()
1098 && prevpar.getLabelWidthString()
1099 == par.getLabelWidthString()) {
1100 layoutasc = layout.itemsep * dh;
1101 } else if (pit != 0 || first != 0) {
1102 if (layout.topsep > 0)
1103 layoutasc = layout.topsep * dh;
1106 prev = text_->outerHook(pit);
1107 if (prev != pit_type(pars.size())) {
1108 maxasc += int(pars[prev].layout().parsep * dh);
1109 } else if (pit != 0) {
1110 Paragraph const & prevpar = pars[pit - 1];
1111 if (prevpar.getDepth() != 0 ||
1112 prevpar.layout() == layout) {
1113 maxasc += int(layout.parsep * dh);
1118 // is it a bottom line?
1119 if (end >= par.size() && topBottomSpace) {
1120 // add the layout spaces, for example before and after
1121 // a section, or between the items of a itemize or enumerate
1123 pit_type nextpit = pit + 1;
1124 if (nextpit != pit_type(pars.size())) {
1125 pit_type cpit = pit;
1129 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1130 usual = pars[cpit].layout().bottomsep * dh;
1131 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1132 if (pars[cpit].layout() != pars[nextpit].layout()
1133 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1135 unusual = pars[cpit].layout().bottomsep * dh;
1137 layoutdesc = max(unusual, usual);
1138 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1139 if (pars[cpit].layout() != pars[nextpit].layout()
1140 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1141 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1146 // incalculate the layout spaces
1147 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1148 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1150 // FIXME: the correct way is to do the following is to move the
1151 // following code in another method specially tailored for the
1152 // main Text. The following test is thus bogus.
1153 // Top and bottom margin of the document (only at top-level)
1154 if (main_text_ && topBottomSpace) {
1155 if (pit == 0 && first == 0)
1157 if (pit + 1 == pit_type(pars.size()) &&
1158 end == par.size() &&
1159 !(end > 0 && par.isNewline(end - 1)))
1163 return Dimension(0, maxasc + labeladdon, maxdesc);
1167 // x is an absolute screen coord
1168 // returns the column near the specified x-coordinate of the row
1169 // x is set to the real beginning of this column
1170 pos_type TextMetrics::getColumnNearX(pit_type const pit,
1171 Row const & row, int & x, bool & boundary) const
1173 Buffer const & buffer = bv_->buffer();
1175 /// For the main Text, it is possible that this pit is not
1176 /// yet in the CoordCache when moving cursor up.
1177 /// x Paragraph coordinate is always 0 for main text anyway.
1178 int const xo = origin_.x_;
1180 Paragraph const & par = text_->getPar(pit);
1182 bidi.computeTables(par, buffer, row);
1184 pos_type vc = row.pos();
1185 pos_type end = row.endpos();
1187 Layout const & layout = par.layout();
1189 bool left_side = false;
1191 pos_type body_pos = par.beginOfBody();
1193 double tmpx = row.x;
1194 double last_tmpx = tmpx;
1197 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1200 // check for empty row
1206 // This (rtl_support test) is not needed, but gives
1207 // some speedup if rtl_support == false
1208 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1210 // If lastrow is false, we don't need to compute
1211 // the value of rtl.
1212 bool const rtl = lastrow ? text_->isRTL(par) : false;
1214 // if the first character is a separator, and we are in RTL
1215 // text, this character will not be painted on screen
1216 // and thus we should not count it and skip to the next.
1217 if (rtl && par.isSeparator(bidi.vis2log(vc)))
1220 while (vc < end && tmpx <= x) {
1221 c = bidi.vis2log(vc);
1223 if (body_pos > 0 && c == body_pos - 1) {
1224 FontMetrics const & fm = theFontMetrics(
1225 text_->labelFont(par));
1226 tmpx += row.label_hfill + fm.width(layout.labelsep);
1227 if (par.isLineSeparator(body_pos - 1))
1228 tmpx -= singleWidth(pit, body_pos - 1);
1231 tmpx += singleWidth(pit, c);
1232 if (par.isSeparator(c) && c >= body_pos)
1233 tmpx += row.separator;
1237 if ((tmpx + last_tmpx) / 2 > x) {
1242 LASSERT(vc <= end, /**/); // This shouldn't happen.
1247 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
1248 (!rtl && !left_side && vc == end && x > tmpx + 5))) {
1249 if (!par.isNewline(end - 1))
1251 } else if (vc == row.pos()) {
1252 c = bidi.vis2log(vc);
1253 if (bidi.level(c) % 2 == 1)
1256 c = bidi.vis2log(vc - 1);
1257 bool const rtl = (bidi.level(c) % 2 == 1);
1258 if (left_side == rtl) {
1260 boundary = isRTLBoundary(pit, c);
1264 // I believe this code is not needed anymore (Jug 20050717)
1266 // The following code is necessary because the cursor position past
1267 // the last char in a row is logically equivalent to that before
1268 // the first char in the next row. That's why insets causing row
1269 // divisions -- Newline and display-style insets -- must be treated
1270 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1271 // Newline inset, air gap below:
1272 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1273 if (bidi.level(end -1) % 2 == 0)
1274 tmpx -= singleWidth(pit, end - 1);
1276 tmpx += singleWidth(pit, end - 1);
1280 // Air gap above display inset:
1281 if (row.pos() < end && c >= end && end < par.size()
1282 && par.isInset(end) && par.getInset(end)->display()) {
1285 // Air gap below display inset:
1286 if (row.pos() < end && c >= end && par.isInset(end - 1)
1287 && par.getInset(end - 1)->display()) {
1293 pos_type const col = c - row.pos();
1295 if (!c || end == par.size())
1298 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1303 return min(col, end - 1 - row.pos());
1307 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1309 // We play safe and use parMetrics(pit) to make sure the
1310 // ParagraphMetrics will be redone and OK to use if needed.
1311 // Otherwise we would use an empty ParagraphMetrics in
1312 // upDownInText() while in selection mode.
1313 ParagraphMetrics const & pm = parMetrics(pit);
1315 LASSERT(row < int(pm.rows().size()), /**/);
1317 Row const & r = pm.rows()[row];
1318 return r.pos() + getColumnNearX(pit, r, x, bound);
1322 void TextMetrics::newParMetricsDown()
1324 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1325 pit_type const pit = last.first + 1;
1326 if (pit == int(text_->paragraphs().size()))
1329 // do it and update its position.
1331 par_metrics_[pit].setPosition(last.second.position()
1332 + last.second.descent() + par_metrics_[pit].ascent());
1336 void TextMetrics::newParMetricsUp()
1338 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1339 if (first.first == 0)
1342 pit_type const pit = first.first - 1;
1343 // do it and update its position.
1345 par_metrics_[pit].setPosition(first.second.position()
1346 - first.second.ascent() - par_metrics_[pit].descent());
1349 // y is screen coordinate
1350 pit_type TextMetrics::getPitNearY(int y)
1352 LASSERT(!text_->paragraphs().empty(), return -1);
1353 LASSERT(!par_metrics_.empty(), return -1);
1354 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1356 // look for highest numbered paragraph with y coordinate less than given y
1359 ParMetricsCache::const_iterator it = par_metrics_.begin();
1360 ParMetricsCache::const_iterator et = par_metrics_.end();
1361 ParMetricsCache::const_iterator last = et; last--;
1363 ParagraphMetrics const & pm = it->second;
1365 if (y < it->second.position() - int(pm.ascent())) {
1366 // We are looking for a position that is before the first paragraph in
1367 // the cache (which is in priciple off-screen, that is before the
1370 // We are already at the first paragraph in the inset.
1372 // OK, this is the paragraph we are looking for.
1373 pit = it->first - 1;
1378 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1380 if (y >= last->second.position() + int(pm_last.descent())) {
1381 // We are looking for a position that is after the last paragraph in
1382 // the cache (which is in priciple off-screen), that is before the
1384 pit = last->first + 1;
1385 if (pit == int(text_->paragraphs().size()))
1386 // We are already at the last paragraph in the inset.
1388 // OK, this is the paragraph we are looking for.
1389 newParMetricsDown();
1393 for (; it != et; ++it) {
1394 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1395 << " y: " << it->second.position());
1397 ParagraphMetrics const & pm = par_metrics_[it->first];
1399 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1401 yy = it->second.position();
1405 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1411 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1412 bool assert_in_view, bool up)
1414 ParagraphMetrics const & pm = par_metrics_[pit];
1416 int yy = pm.position() - pm.ascent();
1417 LASSERT(!pm.rows().empty(), /**/);
1418 RowList::const_iterator rit = pm.rows().begin();
1419 RowList::const_iterator rlast = pm.rows().end();
1421 for (; rit != rlast; yy += rit->height(), ++rit)
1422 if (yy + rit->height() > y)
1425 if (assert_in_view) {
1426 if (!up && yy + rit->height() > y) {
1427 if (rit != pm.rows().begin()) {
1430 } else if (pit != 0) {
1433 ParagraphMetrics const & pm2 = par_metrics_[pit];
1434 rit = pm2.rows().end();
1438 } else if (up && yy != y) {
1440 y = yy + rit->height();
1442 } else if (pit < int(text_->paragraphs().size()) - 1) {
1444 newParMetricsDown();
1445 ParagraphMetrics const & pm2 = par_metrics_[pit];
1446 rit = pm2.rows().begin();
1455 // x,y are absolute screen coordinates
1456 // sets cursor recursively descending into nested editable insets
1457 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1458 bool assert_in_view, bool up)
1460 if (lyxerr.debugging(Debug::WORKAREA)) {
1461 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1462 cur.bv().coordCache().dump();
1464 pit_type pit = getPitNearY(y);
1465 LASSERT(pit != -1, return 0);
1467 int yy = y; // is modified by getPitAndRowNearY
1468 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1470 bool bound = false; // is modified by getColumnNearX
1471 int xx = x; // is modified by getColumnNearX
1472 pos_type const pos = row.pos()
1473 + getColumnNearX(pit, row, xx, bound);
1476 cur.boundary(bound);
1479 // try to descend into nested insets
1480 Inset * inset = checkInsetHit(x, yy);
1481 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1483 // Either we deconst editXY or better we move current_font
1484 // and real_current_font to Cursor
1485 // FIXME: what is needed now that current_font and real_current_font
1487 cur.setCurrentFont();
1491 ParagraphList const & pars = text_->paragraphs();
1492 Inset const * inset_before = pos ? pars[pit].getInset(pos - 1) : 0;
1494 // This should be just before or just behind the
1495 // cursor position set above.
1496 LASSERT(inset == inset_before
1497 || inset == pars[pit].getInset(pos), /**/);
1499 // Make sure the cursor points to the position before
1501 if (inset == inset_before) {
1503 cur.boundary(false);
1506 // Try to descend recursively inside the inset.
1507 inset = inset->editXY(cur, x, yy);
1509 if (cur.top().text() == text_)
1510 cur.setCurrentFont();
1515 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1517 LASSERT(text_ == cur.text(), /**/);
1518 pit_type pit = getPitNearY(y);
1519 LASSERT(pit != -1, return);
1521 ParagraphMetrics const & pm = par_metrics_[pit];
1523 int yy = pm.position() - pm.ascent();
1524 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1525 " pit: " << pit << " yy: " << yy);
1528 LASSERT(pm.rows().size(), /**/);
1529 for (; r < int(pm.rows().size()) - 1; ++r) {
1530 Row const & row = pm.rows()[r];
1531 if (int(yy + row.height()) > y)
1536 Row const & row = pm.rows()[r];
1538 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1542 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1544 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1546 text_->setCursor(cur, pit, pos, true, bound);
1547 // remember new position.
1552 //takes screen x,y coordinates
1553 Inset * TextMetrics::checkInsetHit(int x, int y)
1555 pit_type pit = getPitNearY(y);
1556 LASSERT(pit != -1, return 0);
1558 Paragraph const & par = text_->paragraphs()[pit];
1559 ParagraphMetrics const & pm = par_metrics_[pit];
1561 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1563 InsetList::const_iterator iit = par.insetList().begin();
1564 InsetList::const_iterator iend = par.insetList().end();
1565 for (; iit != iend; ++iit) {
1566 Inset * inset = iit->inset;
1568 LYXERR(Debug::DEBUG, "examining inset " << inset);
1570 if (!bv_->coordCache().getInsets().has(inset)) {
1571 LYXERR(Debug::DEBUG, "inset has no cached position");
1575 Dimension const & dim = pm.insetDimension(inset);
1576 Point p = bv_->coordCache().getInsets().xy(inset);
1578 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1579 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1582 && x <= p.x_ + dim.wid
1583 && y >= p.y_ - dim.asc
1584 && y <= p.y_ + dim.des) {
1585 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1590 LYXERR(Debug::DEBUG, "No inset hit. ");
1595 int TextMetrics::cursorX(CursorSlice const & sl,
1596 bool boundary) const
1598 LASSERT(sl.text() == text_, /**/);
1599 pit_type const pit = sl.pit();
1600 Paragraph const & par = text_->paragraphs()[pit];
1601 ParagraphMetrics const & pm = par_metrics_[pit];
1602 if (pm.rows().empty())
1605 pos_type ppos = sl.pos();
1606 // Correct position in front of big insets
1607 bool const boundary_correction = ppos != 0 && boundary;
1608 if (boundary_correction)
1611 Row const & row = pm.getRow(sl.pos(), boundary);
1613 pos_type cursor_vpos = 0;
1615 Buffer const & buffer = bv_->buffer();
1618 bidi.computeTables(par, buffer, row);
1620 pos_type const row_pos = row.pos();
1621 pos_type const end = row.endpos();
1622 // Spaces at logical line breaks in bidi text must be skipped during
1623 // cursor positioning. However, they may appear visually in the middle
1624 // of a row; they must be skipped, wherever they are...
1625 // * logically "abc_[HEBREW_\nHEBREW]"
1626 // * visually "abc_[_WERBEH\nWERBEH]"
1627 pos_type skipped_sep_vpos = -1;
1630 cursor_vpos = row_pos;
1631 else if (ppos >= end)
1632 cursor_vpos = text_->isRTL(par) ? row_pos : end;
1633 else if (ppos > row_pos && ppos >= end)
1634 //FIXME: this code is never reached!
1635 // (see http://www.lyx.org/trac/changeset/8251)
1636 // Place cursor after char at (logical) position pos - 1
1637 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
1638 ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
1640 // Place cursor before char at (logical) position ppos
1641 cursor_vpos = (bidi.level(ppos) % 2 == 0)
1642 ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
1644 pos_type body_pos = par.beginOfBody();
1646 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1649 // check for possible inline completion in this row
1650 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
1651 pos_type inlineCompletionVPos = -1;
1652 if (inlineCompletionPos.inTexted()
1653 && inlineCompletionPos.text() == text_
1654 && inlineCompletionPos.pit() == pit
1655 && inlineCompletionPos.pos() - 1 >= row_pos
1656 && inlineCompletionPos.pos() - 1 < end) {
1657 // draw logically behind the previous character
1658 inlineCompletionVPos = bidi.log2vis(inlineCompletionPos.pos() - 1);
1661 // Use font span to speed things up, see below
1665 // If the last logical character is a separator, skip it, unless
1666 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1667 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1668 skipped_sep_vpos = bidi.log2vis(end - 1);
1670 if (lyxrc.paragraph_markers && text_->isRTL(par)) {
1671 ParagraphList const & pars_ = text_->paragraphs();
1672 if (size_type(pit + 1) < pars_.size()) {
1674 docstring const s = docstring(1, char_type(0x00B6));
1675 x += theFontMetrics(f).width(s);
1679 // Inline completion RTL special case row_pos == cursor_pos:
1680 // "__|b" => cursor_pos is right of __
1681 if (row_pos == inlineCompletionVPos && row_pos == cursor_vpos) {
1682 font = displayFont(pit, row_pos + 1);
1683 docstring const & completion = bv_->inlineCompletion();
1684 if (font.isRightToLeft() && completion.length() > 0)
1685 x += theFontMetrics(font.fontInfo()).width(completion);
1688 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1689 // Skip the separator which is at the logical end of the row
1690 if (vpos == skipped_sep_vpos)
1692 pos_type pos = bidi.vis2log(vpos);
1693 if (body_pos > 0 && pos == body_pos - 1) {
1694 FontMetrics const & labelfm = theFontMetrics(
1695 text_->labelFont(par));
1696 x += row.label_hfill + labelfm.width(par.layout().labelsep);
1697 if (par.isLineSeparator(body_pos - 1))
1698 x -= singleWidth(pit, body_pos - 1);
1701 // Use font span to speed things up, see above
1702 if (pos < font_span.first || pos > font_span.last) {
1703 font_span = par.fontSpan(pos);
1704 font = displayFont(pit, pos);
1707 x += pm.singleWidth(pos, font);
1709 // Inline completion RTL case:
1710 // "a__|b", __ of b => non-boundary a-pos is right of __
1711 if (vpos + 1 == inlineCompletionVPos
1712 && (vpos + 1 < cursor_vpos || !boundary_correction)) {
1713 font = displayFont(pit, vpos + 1);
1714 docstring const & completion = bv_->inlineCompletion();
1715 if (font.isRightToLeft() && completion.length() > 0)
1716 x += theFontMetrics(font.fontInfo()).width(completion);
1719 // Inline completion LTR case:
1720 // "b|__a", __ of b => non-boundary a-pos is in front of __
1721 if (vpos == inlineCompletionVPos
1722 && (vpos + 1 < cursor_vpos || boundary_correction)) {
1723 font = displayFont(pit, vpos);
1724 docstring const & completion = bv_->inlineCompletion();
1725 if (!font.isRightToLeft() && completion.length() > 0)
1726 x += theFontMetrics(font.fontInfo()).width(completion);
1729 if (par.isSeparator(pos) && pos >= body_pos)
1733 // see correction above
1734 if (boundary_correction) {
1735 if (isRTL(sl, boundary))
1736 x -= singleWidth(pit, ppos);
1738 x += singleWidth(pit, ppos);
1745 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1747 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1748 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1749 if (pm.rows().empty())
1753 h -= par_metrics_[0].rows()[0].ascent();
1754 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1755 h += par_metrics_[pit].height();
1758 if (pos && boundary)
1760 size_t const rend = pm.pos2row(pos);
1761 for (size_t rit = 0; rit != rend; ++rit)
1762 h += pm.rows()[rit].height();
1763 h += pm.rows()[rend].ascent();
1768 // the cursor set functions have a special mechanism. When they
1769 // realize you left an empty paragraph, they will delete it.
1771 bool TextMetrics::cursorHome(Cursor & cur)
1773 LASSERT(text_ == cur.text(), /**/);
1774 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1775 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1776 return text_->setCursor(cur, cur.pit(), row.pos());
1780 bool TextMetrics::cursorEnd(Cursor & cur)
1782 LASSERT(text_ == cur.text(), /**/);
1783 // if not on the last row of the par, put the cursor before
1784 // the final space exept if I have a spanning inset or one string
1785 // is so long that we force a break.
1786 pos_type end = cur.textRow().endpos();
1788 // empty text, end-1 is no valid position
1790 bool boundary = false;
1791 if (end != cur.lastpos()) {
1792 if (!cur.paragraph().isLineSeparator(end-1)
1793 && !cur.paragraph().isNewline(end-1))
1798 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1802 void TextMetrics::deleteLineForward(Cursor & cur)
1804 LASSERT(text_ == cur.text(), /**/);
1805 if (cur.lastpos() == 0) {
1806 // Paragraph is empty, so we just go forward
1807 text_->cursorForward(cur);
1810 cur.setSelection(true); // to avoid deletion
1813 // What is this test for ??? (JMarc)
1814 if (!cur.selection())
1815 text_->deleteWordForward(cur);
1817 cap::cutSelection(cur, true, false);
1818 cur.checkBufferStructure();
1823 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1825 ParagraphList const & pars = text_->paragraphs();
1826 return row.endpos() >= pars[pit].size()
1827 && pit + 1 == pit_type(pars.size());
1831 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1833 return row.pos() == 0 && pit == 0;
1837 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1839 LASSERT(pit >= 0, /**/);
1840 LASSERT(pit < int(text_->paragraphs().size()), /**/);
1841 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1845 int TextMetrics::leftMargin(int max_width,
1846 pit_type const pit, pos_type const pos) const
1848 ParagraphList const & pars = text_->paragraphs();
1850 LASSERT(pit >= 0, /**/);
1851 LASSERT(pit < int(pars.size()), /**/);
1852 Paragraph const & par = pars[pit];
1853 LASSERT(pos >= 0, /**/);
1854 LASSERT(pos <= par.size(), /**/);
1855 Buffer const & buffer = bv_->buffer();
1856 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1857 DocumentClass const & tclass = buffer.params().documentClass();
1858 Layout const & layout = par.layout();
1860 docstring parindent = layout.parindent;
1864 if (text_->isMainText())
1865 l_margin += bv_->leftMargin();
1867 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1868 tclass.leftmargin());
1870 if (par.getDepth() != 0) {
1871 // find the next level paragraph
1872 pit_type newpar = text_->outerHook(pit);
1873 if (newpar != pit_type(pars.size())) {
1874 if (pars[newpar].layout().isEnvironment()) {
1875 l_margin = leftMargin(max_width, newpar);
1877 if (tclass.isDefaultLayout(par.layout())
1878 || tclass.isPlainLayout(par.layout())) {
1879 if (pars[newpar].params().noindent())
1882 parindent = pars[newpar].layout().parindent;
1887 // This happens after sections in standard classes. The 1.3.x
1888 // code compared depths too, but it does not seem necessary
1890 if (tclass.isDefaultLayout(par.layout())
1891 && pit > 0 && pars[pit - 1].layout().nextnoindent)
1894 FontInfo const labelfont = text_->labelFont(par);
1895 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1897 switch (layout.margintype) {
1898 case MARGIN_DYNAMIC:
1899 if (!layout.leftmargin.empty()) {
1900 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1903 if (!par.labelString().empty()) {
1904 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1905 l_margin += labelfont_metrics.width(par.labelString());
1906 l_margin += labelfont_metrics.width(layout.labelsep);
1910 case MARGIN_MANUAL: {
1911 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1912 // The width of an empty par, even with manual label, should be 0
1913 if (!par.empty() && pos >= par.beginOfBody()) {
1914 if (!par.getLabelWidthString().empty()) {
1915 docstring labstr = par.getLabelWidthString();
1916 l_margin += labelfont_metrics.width(labstr);
1917 l_margin += labelfont_metrics.width(layout.labelsep);
1923 case MARGIN_STATIC: {
1924 l_margin += theFontMetrics(buffer.params().getFont()).
1925 signedWidth(layout.leftmargin) * 4 / (par.getDepth() + 4);
1929 case MARGIN_FIRST_DYNAMIC:
1930 if (layout.labeltype == LABEL_MANUAL) {
1931 // if we are at position 0, we are never in the body
1932 if (pos > 0 && pos >= par.beginOfBody())
1933 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1935 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1937 // Special case to fix problems with
1939 || (layout.labeltype == LABEL_STATIC
1940 && layout.latextype == LATEX_ENVIRONMENT
1941 && !text_->isFirstInSequence(pit))) {
1942 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1943 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
1944 && layout.labeltype != LABEL_BIBLIO
1945 && layout.labeltype !=
1946 LABEL_CENTERED_TOP_ENVIRONMENT) {
1947 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1948 l_margin += labelfont_metrics.width(layout.labelsep);
1949 l_margin += labelfont_metrics.width(par.labelString());
1953 case MARGIN_RIGHT_ADDRESS_BOX: {
1955 // ok, a terrible hack. The left margin depends on the widest
1956 // row in this paragraph.
1957 RowList::iterator rit = par.rows().begin();
1958 RowList::iterator end = par.rows().end();
1959 // FIXME: This is wrong.
1960 int minfill = max_width;
1961 for ( ; rit != end; ++rit)
1962 if (rit->fill() < minfill)
1963 minfill = rit->fill();
1964 l_margin += theFontMetrics(params.getFont()).signedWidth(layout.leftmargin);
1965 l_margin += minfill;
1967 // also wrong, but much shorter.
1968 l_margin += max_width / 2;
1973 if (!par.params().leftIndent().zero())
1974 l_margin += par.params().leftIndent().inPixels(max_width);
1978 if (par.params().align() == LYX_ALIGN_LAYOUT)
1979 align = layout.align;
1981 align = par.params().align();
1983 // set the correct parindent
1985 && (layout.labeltype == LABEL_NO_LABEL
1986 || layout.labeltype == LABEL_TOP_ENVIRONMENT
1987 || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
1988 || (layout.labeltype == LABEL_STATIC
1989 && layout.latextype == LATEX_ENVIRONMENT
1990 && !text_->isFirstInSequence(pit)))
1991 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
1992 && !par.params().noindent()
1993 // in some insets, paragraphs are never indented
1994 && !text_->inset().neverIndent()
1995 // display style insets are always centered, omit indentation
1998 && par.getInset(pos)->display())
1999 && (!(tclass.isDefaultLayout(par.layout())
2000 || tclass.isPlainLayout(par.layout()))
2001 || buffer.params().paragraph_separation
2002 == BufferParams::ParagraphIndentSeparation)
2005 // use the parindent of the layout when the default indentation is
2006 // used otherwise use the indentation set in the document settings
2007 if (buffer.params().getIndentation().asLyXCommand() == "default")
2008 l_margin += theFontMetrics(
2009 buffer.params().getFont()).signedWidth(parindent);
2011 l_margin += buffer.params().getIndentation().inPixels(*bv_);
2018 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
2020 ParagraphMetrics const & pm = par_metrics_[pit];
2022 return pm.singleWidth(pos, displayFont(pit, pos));
2026 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
2028 if (par_metrics_.empty())
2034 ParMetricsCache::iterator it = par_metrics_.begin();
2035 ParMetricsCache::iterator const pm_end = par_metrics_.end();
2036 y -= it->second.ascent();
2037 for (; it != pm_end; ++it) {
2038 ParagraphMetrics const & pmi = it->second;
2040 pit_type const pit = it->first;
2041 // Save the paragraph position in the cache.
2042 it->second.setPosition(y);
2043 drawParagraph(pi, pit, x, y);
2049 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
2051 BufferParams const & bparams = bv_->buffer().params();
2052 ParagraphMetrics const & pm = par_metrics_[pit];
2053 if (pm.rows().empty())
2057 bool const original_drawing_state = pi.pain.isDrawingEnabled();
2058 int const ww = bv_->workHeight();
2059 size_t const nrows = pm.rows().size();
2061 Cursor const & cur = bv_->cursor();
2062 DocIterator sel_beg = cur.selectionBegin();
2063 DocIterator sel_end = cur.selectionEnd();
2064 bool selection = cur.selection()
2065 // This is our text.
2066 && cur.text() == text_
2067 // if the anchor is outside, this is not our selection
2068 && cur.normalAnchor().text() == text_
2069 && pit >= sel_beg.pit() && pit <= sel_end.pit();
2071 // We store the begin and end pos of the selection relative to this par
2072 DocIterator sel_beg_par = cur.selectionBegin();
2073 DocIterator sel_end_par = cur.selectionEnd();
2075 // We care only about visible selection.
2077 if (pit != sel_beg.pit()) {
2078 sel_beg_par.pit() = pit;
2079 sel_beg_par.pos() = 0;
2081 if (pit != sel_end.pit()) {
2082 sel_end_par.pit() = pit;
2083 sel_end_par.pos() = sel_end_par.lastpos();
2087 for (size_t i = 0; i != nrows; ++i) {
2089 Row const & row = pm.rows()[i];
2093 bool const inside = (y + row.descent() >= 0
2094 && y - row.ascent() < ww);
2095 // It is not needed to draw on screen if we are not inside.
2096 pi.pain.setDrawingEnabled(inside && original_drawing_state);
2097 RowPainter rp(pi, *text_, pit, row, bidi, x, y);
2100 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
2102 row.setSelection(-1, -1);
2104 // The row knows nothing about the paragraph, so we have to check
2105 // whether this row is the first or last and update the margins.
2106 if (row.selection()) {
2107 if (row.sel_beg == 0)
2108 row.begin_margin_sel = sel_beg.pit() < pit;
2109 if (row.sel_end == sel_end_par.lastpos())
2110 row.end_margin_sel = sel_end.pit() > pit;
2113 // Row signature; has row changed since last paint?
2114 row.setCrc(pm.computeRowSignature(row, bparams));
2115 bool row_has_changed = row.changed();
2117 // Take this opportunity to spellcheck the row contents.
2118 if (row_has_changed && lyxrc.spellcheck_continuously) {
2119 text_->getPar(pit).spellCheck();
2122 // Don't paint the row if a full repaint has not been requested
2123 // and if it has not changed.
2124 if (!pi.full_repaint && !row_has_changed) {
2125 // Paint only the insets if the text itself is
2127 rp.paintOnlyInsets();
2132 // Clear background of this row if paragraph background was not
2133 // already cleared because of a full repaint.
2134 if (!pi.full_repaint && row_has_changed) {
2135 pi.pain.fillRectangle(x, y - row.ascent(),
2136 width(), row.height(), pi.background_color);
2139 // Instrumentation for testing row cache (see also
2141 if (lyxerr.debugging(Debug::PAINTING) && inside
2142 && (row.selection() || pi.full_repaint || row_has_changed)) {
2143 string const foreword = text_->isMainText() ?
2144 "main text redraw " : "inset text redraw: ";
2145 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
2146 << " row_selection=" << row.selection()
2147 << " full_repaint=" << pi.full_repaint
2148 << " row_has_changed=" << row_has_changed);
2151 // Backup full_repaint status and force full repaint
2152 // for inner insets as the Row has been cleared out.
2153 bool tmp = pi.full_repaint;
2154 pi.full_repaint = true;
2156 rp.paintSelection();
2159 rp.paintChangeBar();
2160 bool const is_rtl = text_->isRTL(text_->getPar(pit));
2161 if (i == 0 && !is_rtl)
2163 if (i == nrows - 1 && is_rtl)
2166 if (i == nrows - 1 && !is_rtl)
2168 if (i == 0 && is_rtl)
2172 // Restore full_repaint status.
2173 pi.full_repaint = tmp;
2175 // Re-enable screen drawing for future use of the painter.
2176 pi.pain.setDrawingEnabled(original_drawing_state);
2178 //LYXERR(Debug::PAINTING, ".");
2182 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
2183 Dimension & dim) const
2185 Cursor const & bvcur = cur.bv().cursor();
2187 // get word in front of cursor
2188 docstring word = text_->previousWord(bvcur.top());
2189 DocIterator wordStart = bvcur;
2190 wordStart.pos() -= word.length();
2192 // get position on screen of the word start and end
2193 //FIXME: Is it necessary to explicitly set this to false?
2194 wordStart.boundary(false);
2195 Point lxy = cur.bv().getPos(wordStart);
2196 Point rxy = cur.bv().getPos(bvcur);
2198 // calculate dimensions of the word
2199 dim = rowHeight(bvcur.pit(), wordStart.pos(), bvcur.pos(), false);
2200 dim.wid = abs(rxy.x_ - lxy.x_);
2202 // calculate position of word
2204 x = min(rxy.x_, lxy.x_);
2206 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2207 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2210 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2212 // ParagraphMetrics const & pm = par_metrics_[pit];
2213 // Row const & r = pm.rows()[row];
2219 int defaultRowHeight()
2221 return int(theFontMetrics(sane_font).maxHeight() * 1.2);