3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
9 * Full author contact details are available in file CREDITS.
15 #include "RowPainter.h"
18 #include "CoordCache.h"
20 #include "BufferParams.h"
21 #include "BufferView.h"
27 #include "MetricsInfo.h"
28 #include "Paragraph.h"
29 #include "ParagraphMetrics.h"
30 #include "ParagraphParameters.h"
31 #include "TextMetrics.h"
34 #include "frontends/FontMetrics.h"
35 #include "frontends/Painter.h"
37 #include "insets/InsetText.h"
39 #include "mathed/InsetMath.h"
41 #include "support/debug.h"
42 #include "support/gettext.h"
43 #include "support/textutils.h"
45 #include "support/lassert.h"
46 #include <boost/crc.hpp>
52 using frontend::Painter;
53 using frontend::FontMetrics;
56 RowPainter::RowPainter(PainterInfo & pi,
57 Text const & text, pit_type pit, Row const & row, int x, int y)
58 : pi_(pi), text_(text),
59 text_metrics_(pi_.base.bv->textMetrics(&text)),
60 pars_(text.paragraphs()),
61 row_(row), pit_(pit), par_(text.paragraphs()[pit]),
62 pm_(text_metrics_.parMetrics(pit)), change_(pi_.change_),
63 xo_(x), yo_(y), width_(text_metrics_.width()),
64 solid_line_thickness_(1), solid_line_offset_(1),
65 dotted_line_thickness_(1), dotted_line_offset_(2)
67 bidi_.computeTables(par_, pi_.base.bv->buffer(), row_);
69 if (lyxrc.zoom >= 200) {
70 // derive the line thickness from zoom factor
71 // the zoom is given in percent
72 // (increase thickness at 250%, 450% etc.)
73 solid_line_thickness_ = (lyxrc.zoom + 50) / 200;
74 // adjust line_offset_ too
75 solid_line_offset_ = 1 + solid_line_thickness_ / 2;
77 if (lyxrc.zoom >= 100) {
78 // derive the line thickness from zoom factor
79 // the zoom is given in percent
80 // (increase thickness at 150%, 250% etc.)
81 dotted_line_thickness_ = (lyxrc.zoom + 50) / 100;
82 // adjust line_offset_ too
83 dotted_line_offset_ = 1 + dotted_line_thickness_ / 2;
86 x_ = row_.left_margin + xo_;
88 //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo_ << " yo: " << yo_ << endl;
92 LBUFERR(pit < int(text.paragraphs().size()));
96 FontInfo RowPainter::labelFont() const
98 FontInfo f = text_.labelFont(par_);
100 if (row_.begin_margin_sel || pi_.selected)
101 f.setPaintColor(Color_selectiontext);
106 int RowPainter::leftMargin() const
108 return text_metrics_.leftMargin(text_metrics_.width(), pit_,
112 // If you want to debug inset metrics uncomment the following line:
113 //#define DEBUG_METRICS
114 // This draws green lines around each inset.
117 void RowPainter::paintInset(Inset const * inset, pos_type const pos)
120 bool const pi_selected = pi_.selected;
121 Cursor const & cur = pi_.base.bv->cursor();
122 if (cur.selection() && cur.text() == &text_
123 && cur.normalAnchor().text() == &text_)
124 pi_.selected = row_.sel_beg <= pos && row_.sel_end > pos;
126 Font const font = text_metrics_.displayFont(pit_, pos);
128 LASSERT(inset, return);
129 // Backup full_repaint status because some insets (InsetTabular)
130 // requires a full repaint
131 bool const pi_full_repaint = pi_.full_repaint;
132 bool const pi_do_spellcheck = pi_.do_spellcheck;
134 pi_.base.font = inset->inheritFont() ? font.fontInfo() :
135 pi_.base.bv->buffer().params().getFont().fontInfo();
136 pi_.ltr_pos = (bidi_.level(pos) % 2 == 0);
137 Change prev_change = change_;
138 pi_.change_ = change_.changed() ? change_ : par_.lookupChange(pos);
139 pi_.do_spellcheck &= inset->allowSpellCheck();
141 int const x1 = int(x_);
142 pi_.base.bv->coordCache().insets().add(inset, x1, yo_);
143 // insets are painted completely. Recursive
144 // FIXME: it is wrong to completely paint the background
145 // if we want to do single row painting.
146 inset->drawBackground(pi_, x1, yo_);
147 inset->drawSelection(pi_, x1, yo_);
148 inset->draw(pi_, x1, yo_);
150 Dimension const & dim = pm_.insetDimension(inset);
152 paintForeignMark(x_, font.language(), dim.descent());
156 // Restore full_repaint status.
157 pi_.full_repaint = pi_full_repaint;
158 pi_.change_ = prev_change;
159 pi_.do_spellcheck = pi_do_spellcheck;
160 pi_.selected = pi_selected;
163 int const x2 = x1 + dim.wid;
164 int const y1 = yo_ + dim.des;
165 int const y2 = yo_ - dim.asc;
166 pi_.pain.line(x1, y1, x1, y2, Color_green);
167 pi_.pain.line(x1, y1, x2, y1, Color_green);
168 pi_.pain.line(x2, y1, x2, y2, Color_green);
169 pi_.pain.line(x1, y2, x2, y2, Color_green);
174 void RowPainter::paintSeparator(double width, Font const & font)
176 pi_.pain.textDecoration(font.fontInfo(), int(x_), yo_, int(width));
181 void RowPainter::paintForeignMark(double orig_x, Language const * lang, int desc) const
183 if (!lyxrc.mark_foreign_language)
185 if (lang == latex_language)
187 if (lang == pi_.base.bv->buffer().params().language)
190 int const y = yo_ + solid_line_offset_ + desc + solid_line_thickness_ / 2;
191 pi_.pain.line(int(orig_x), y, int(x_), y, Color_language,
192 Painter::line_solid, solid_line_thickness_);
196 void RowPainter::paintMisspelledMark(double const orig_x,
197 docstring const & str, Font const & font,
198 pos_type const start_pos,
199 bool const changed) const
201 // if changed the misspelled marker gets placed slightly lower than normal
202 // to avoid drawing at the same vertical offset
203 int const y = yo_ + solid_line_offset_ + solid_line_thickness_
204 + (changed ? solid_line_thickness_ + 1 : 0)
205 + dotted_line_offset_;
207 //FIXME: this could be computed only once, it is probably not costly.
208 // check for cursor position
209 // don't draw misspelled marker for words at cursor position
210 // we don't want to disturb the process of text editing
211 DocIterator const nw = pi_.base.bv->cursor().newWord();
213 if (!nw.empty() && par_.id() == nw.paragraph().id()) {
215 if (cpos > 0 && cpos == par_.size() && !par_.isWordSeparator(cpos-1))
217 else if (cpos > 0 && par_.isWordSeparator(cpos))
221 pos_type pos = start_pos;
222 while (pos < start_pos + pos_type(str.length())) {
223 if (!par_.isMisspelled(pos)) {
228 FontSpan const & range = par_.getSpellRange(pos);
230 // Skip element which are being edited
231 if (range.contains(cpos)) {
232 // the range includes the last element
233 pos = range.last + 1;
237 FontMetrics const & fm = theFontMetrics(font);
238 int x1 = fm.pos2x(str, range.first - start_pos,
239 font.isVisibleRightToLeft());
240 int x2 = fm.pos2x(str, min(range.last - start_pos + 1,
241 pos_type(str.length())),
242 font.isVisibleRightToLeft());
246 pi_.pain.line(int(orig_x) + x1, y, int(orig_x) + x2, y,
248 Painter::line_onoffdash, dotted_line_thickness_);
249 pos = range.last + 1;
254 void RowPainter::paintStringAndSel(docstring const & str, Font const & font,
255 Change const & change,
256 pos_type start_pos, pos_type end_pos)
258 // at least part of text selected?
259 bool const some_sel = (end_pos >= row_.sel_beg && start_pos < row_.sel_end)
261 // all the text selected?
262 bool const all_sel = (start_pos >= row_.sel_beg && end_pos < row_.sel_end)
267 copy.fontInfo().setPaintColor(Color_selectiontext);
268 x_ += pi_.pain.text(int(x_), yo_, str, copy);
269 } else if (change.changed()) {
271 copy.fontInfo().setPaintColor(change.color());
272 x_ += pi_.pain.text(int(x_), yo_, str, copy);
273 } else if (!some_sel) {
274 x_ += pi_.pain.text(int(x_), yo_, str, font);
276 x_ += pi_.pain.text(int(x_), yo_, str, font, Color_selectiontext,
277 max(row_.sel_beg, start_pos) - start_pos,
278 min(row_.sel_end, end_pos) - start_pos);
283 void RowPainter::paintChange(double orig_x, Font const & font,
284 Change const & change) const
286 if (!change.changed())
288 // Calculate 1/3 height of font
289 FontMetrics const & fm = theFontMetrics(font);
290 int const y_bar = change.deleted() ? yo_ - fm.maxAscent() / 3
291 : yo_ + 2 * solid_line_offset_ + solid_line_thickness_;
292 pi_.pain.line(int(orig_x), y_bar, int(x_), y_bar,
293 change.color(), Painter::line_solid, solid_line_thickness_);
297 void RowPainter::paintFromPos(pos_type & vpos, bool changed)
299 pos_type pos = bidi_.vis2log(vpos);
300 pos_type start_pos = pos;
304 char_type const c = par_.getChar(pos);
307 double const orig_x = x_;
309 Font const font = text_metrics_.displayFont(pit_, pos);
310 FontSpan const font_span = par_.fontSpan(pos);
311 // Track-change status.
312 Change const & change_running = par_.lookupChange(pos);
314 // collect as much similar chars as we can
315 pos_type const end = row_.endpos();
316 for (++vpos ; vpos < end ; ++vpos) {
317 pos = bidi_.vis2log(vpos);
319 if (!font_span.contains(pos))
322 Change const & change = par_.lookupChange(pos);
323 if (!change_running.isSimilarTo(change))
324 // Track change type or author has changed.
327 char_type const c = par_.getChar(pos);
332 if (!isPrintableNonspace(c))
338 // Make pos point to the last character in the string.
339 // Using "pos = bidi_.vis2log(vpos)" does not work for some reason.
341 pos = bidi_.vis2log(vpos - 1);
343 // Now make pos point to the position _after_ the string.
344 // Using vis2log for that is not a good idea in general, we
345 // want logical ordering.
346 if (font.isVisibleRightToLeft())
352 str.replace(0,1,from_ascii(" "));
354 /* Because we do our own bidi, at this point the strings are
355 * already in visual order. However, Qt also applies its own
356 * bidi algorithm to strings that it paints to the screen.
357 * Therefore, if we were to paint Hebrew/Arabic words as a
358 * single string, the letters in the words would get reversed
359 * again. In order to avoid that, we reverse our string.
360 * See also http://thread.gmane.org/gmane.editors.lyx.devel/79740
361 * for an earlier thread on the subject
363 if (font.isVisibleRightToLeft()) {
364 reverse(str.begin(), str.end());
365 // If the string is reversed, the positions need to be adjusted
368 swap(start_pos, pos);
371 // Actually paint the text, taking care about the selection
372 paintStringAndSel(str, font, change_running, start_pos, pos);
374 // The line that indicates word in a different language
375 paintForeignMark(orig_x, font.language());
377 // Paint the spelling mark if needed.
378 if (lyxrc.spellcheck_continuously && pi_.do_spellcheck
379 && par_.isMisspelled(start_pos)) {
380 paintMisspelledMark(orig_x, str, font, start_pos, changed);
385 void RowPainter::paintChangeBar() const
387 pos_type const start = row_.pos();
388 pos_type end = row_.endpos();
390 if (par_.size() == end) {
391 // this is the last row of the paragraph;
392 // thus, we must also consider the imaginary end-of-par character
396 if (start == end || !par_.isChanged(start, end))
399 int const height = text_metrics_.isLastRow(pit_, row_)
403 pi_.pain.fillRectangle(5, yo_ - row_.ascent(), 3, height, Color_changebar);
407 void RowPainter::paintAppendix() const
409 // only draw the appendix frame once (for the main text)
410 if (!par_.params().appendix() || !text_.isMainText())
413 int y = yo_ - row_.ascent();
415 if (par_.params().startOfAppendix())
416 y += 2 * defaultRowHeight();
418 pi_.pain.line(1, y, 1, yo_ + row_.height(), Color_appendix);
419 pi_.pain.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), Color_appendix);
423 void RowPainter::paintDepthBar() const
425 depth_type const depth = par_.getDepth();
430 depth_type prev_depth = 0;
431 if (!text_metrics_.isFirstRow(pit_, row_)) {
432 pit_type pit2 = pit_;
435 prev_depth = pars_[pit2].getDepth();
438 depth_type next_depth = 0;
439 if (!text_metrics_.isLastRow(pit_, row_)) {
440 pit_type pit2 = pit_;
441 if (row_.endpos() >= pars_[pit2].size())
443 next_depth = pars_[pit2].getDepth();
446 for (depth_type i = 1; i <= depth; ++i) {
447 int const w = nestMargin() / 5;
448 int x = int(xo_) + w * i;
449 // only consider the changebar space if we're drawing outermost text
450 if (text_.isMainText())
451 x += changebarMargin();
453 int const starty = yo_ - row_.ascent();
454 int const h = row_.height() - 1 - (i - next_depth - 1) * 3;
456 pi_.pain.line(x, starty, x, starty + h, Color_depthbar);
459 pi_.pain.fillRectangle(x, starty, w, 2, Color_depthbar);
461 pi_.pain.fillRectangle(x, starty + h, w, 2, Color_depthbar);
466 int RowPainter::paintAppendixStart(int y) const
468 FontInfo pb_font = sane_font;
469 pb_font.setColor(Color_appendix);
476 docstring const label = _("Appendix");
477 theFontMetrics(pb_font).rectText(label, w, a, d);
479 int const text_start = int(xo_ + (width_ - w) / 2);
480 int const text_end = text_start + w;
482 pi_.pain.rectText(text_start, y + d, label, pb_font, Color_none, Color_none);
484 pi_.pain.line(int(xo_ + 1), y, text_start, y, Color_appendix);
485 pi_.pain.line(text_end, y, int(xo_ + width_ - 2), y, Color_appendix);
487 return 3 * defaultRowHeight();
491 void RowPainter::paintTooLargeMarks(bool const left, bool const right) const
494 pi_.pain.line(dotted_line_thickness_, yo_ - row_.ascent(),
495 dotted_line_thickness_, yo_ + row_.descent(),
497 Painter::line_onoffdash, dotted_line_thickness_);
499 int const wwidth = pi_.base.bv->workWidth() - dotted_line_thickness_;
500 pi_.pain.line(wwidth, yo_ - row_.ascent(),
501 wwidth, yo_ + row_.descent(),
503 Painter::line_onoffdash, dotted_line_thickness_);
508 void RowPainter::paintFirst() const
510 BufferParams const & bparams = pi_.base.bv->buffer().params();
511 Layout const & layout = par_.layout();
515 // start of appendix?
516 if (par_.params().startOfAppendix())
517 y_top += paintAppendixStart(yo_ - row_.ascent() + 2 * defaultRowHeight());
519 if (bparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
521 if (layout.latextype == LATEX_PARAGRAPH
522 && !par_.getDepth()) {
523 y_top += bparams.getDefSkip().inPixels(*pi_.base.bv);
525 Layout const & playout = pars_[pit_ - 1].layout();
526 if (playout.latextype == LATEX_PARAGRAPH
527 && !pars_[pit_ - 1].getDepth()) {
528 // is it right to use defskip here, too? (AS)
529 y_top += bparams.getDefSkip().inPixels(*pi_.base.bv);
534 bool const is_first =
535 text_.isFirstInSequence(pit_) || !layout.isParagraphGroup();
536 //lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << endl;
538 if (layout.labelIsInline()
539 && (layout.labeltype != LABEL_STATIC || is_first)) {
541 } else if (is_first && layout.labelIsAbove()) {
542 paintTopLevelLabel();
547 void RowPainter::paintLabel() const
549 docstring const str = par_.labelString();
553 bool const is_rtl = text_.isRTL(par_);
554 Layout const & layout = par_.layout();
555 FontInfo const font = labelFont();
556 FontMetrics const & fm = theFontMetrics(font);
560 x = width_ - leftMargin()
561 + fm.width(layout.labelsep);
563 x = x_ - fm.width(layout.labelsep)
567 pi_.pain.text(int(x), yo_, str, font);
571 void RowPainter::paintTopLevelLabel() const
573 BufferParams const & bparams = pi_.base.bv->buffer().params();
574 bool const is_rtl = text_.isRTL(par_);
575 ParagraphParameters const & pparams = par_.params();
576 Layout const & layout = par_.layout();
577 FontInfo const font = labelFont();
578 docstring const str = par_.labelString();
582 double spacing_val = 1.0;
583 if (!pparams.spacing().isDefault())
584 spacing_val = pparams.spacing().getValue();
586 spacing_val = bparams.spacing().getValue();
588 FontMetrics const & fm = theFontMetrics(font);
590 int const labeladdon = int(fm.maxHeight()
591 * layout.spacing.getValue() * spacing_val);
594 int(fm.maxDescent() * layout.spacing.getValue() * spacing_val
595 + (layout.labelbottomsep * defaultRowHeight()));
598 if (layout.labeltype == LABEL_CENTERED) {
601 x += (width_ - text_metrics_.rightMargin(pm_) - leftMargin()) / 2;
602 x -= fm.width(str) / 2;
604 x = width_ - leftMargin() - fm.width(str);
606 pi_.pain.text(int(x), yo_ - maxdesc - labeladdon, str, font);
610 /** Check if the current paragraph is the last paragraph in a
612 static int getEndLabel(pit_type p, Text const & text)
614 ParagraphList const & pars = text.paragraphs();
616 depth_type par_depth = pars[p].getDepth();
617 while (pit != pit_type(pars.size())) {
618 Layout const & layout = pars[pit].layout();
619 int const endlabeltype = layout.endlabeltype;
621 if (endlabeltype != END_LABEL_NO_LABEL) {
622 if (p + 1 == pit_type(pars.size()))
625 depth_type const next_depth =
626 pars[p + 1].getDepth();
627 if (par_depth > next_depth ||
628 (par_depth == next_depth && layout != pars[p + 1].layout()))
634 pit = text.outerHook(pit);
635 if (pit != pit_type(pars.size()))
636 par_depth = pars[pit].getDepth();
638 return END_LABEL_NO_LABEL;
642 void RowPainter::paintLast()
644 bool const is_rtl = text_.isRTL(par_);
645 int const endlabel = getEndLabel(pit_, text_);
647 // paint imaginary end-of-paragraph character
649 Change const & change = par_.lookupChange(par_.size());
650 if (change.changed()) {
651 FontMetrics const & fm =
652 theFontMetrics(pi_.base.bv->buffer().params().getFont());
653 int const length = fm.maxAscent() / 2;
654 Color col = change.color();
656 pi_.pain.line(int(x_) + 1, yo_ + 2, int(x_) + 1, yo_ + 2 - length, col,
657 Painter::line_solid, 3);
659 if (change.deleted()) {
660 pi_.pain.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1 + length,
661 yo_ + 2, col, Painter::line_solid, 3);
663 pi_.pain.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1,
664 yo_ + 2, col, Painter::line_solid, 3);
672 case END_LABEL_FILLED_BOX: {
673 FontInfo const font = labelFont();
674 FontMetrics const & fm = theFontMetrics(font);
675 int const size = int(0.75 * fm.maxAscent());
676 int const y = yo_ - size;
677 int const max_row_width = width_ - size - Inset::TEXT_TO_INSET_OFFSET;
678 int x = is_rtl ? nestMargin() + changebarMargin()
679 : max_row_width - text_metrics_.rightMargin(pm_);
681 // If needed, move the box a bit to avoid overlapping with text.
682 int const rem = max_row_width - row_.width();
684 x += is_rtl ? rem : - rem;
686 if (endlabel == END_LABEL_BOX)
687 pi_.pain.rectangle(x, y, size, size, Color_eolmarker);
689 pi_.pain.fillRectangle(x, y, size, size, Color_eolmarker);
693 case END_LABEL_STATIC: {
694 FontInfo const font = labelFont();
695 FontMetrics const & fm = theFontMetrics(font);
696 docstring const & str = par_.layout().endlabelstring();
697 double const x = is_rtl ? x_ - fm.width(str) : x_;
698 pi_.pain.text(int(x), yo_, str, font);
702 case END_LABEL_NO_LABEL:
708 void RowPainter::paintOnlyInsets()
710 CoordCache const & cache = pi_.base.bv->coordCache();
711 pos_type const end = row_.endpos();
712 for (pos_type pos = row_.pos(); pos != end; ++pos) {
713 // If outer row has changed, nested insets are repaint completely.
714 Inset const * inset = par_.getInset(pos);
715 bool const nested_inset = inset &&
716 ((inset->asInsetMath() &&
717 !inset->asInsetMath()->asMacroTemplate())
718 || inset->asInsetText()
719 || inset->asInsetTabular());
722 if (x_ > pi_.base.bv->workWidth()
723 || !cache.getInsets().has(inset))
725 x_ = cache.getInsets().x(inset);
726 paintInset(inset, pos);
730 void RowPainter::paintText()
732 Row::const_iterator cit = row_.begin();
733 Row::const_iterator const & end = row_.end();
734 for ( ; cit != end ; ++cit) {
735 double const orig_x = x_;
736 Row::Element const & e = *cit;
737 int foreign_descent = 0;
742 paintStringAndSel(e.str, e.font, e.change, e.pos, e.endpos);
744 // Paint the spelling mark if needed.
745 if (lyxrc.spellcheck_continuously && pi_.do_spellcheck
746 && par_.isMisspelled(e.pos)) {
747 paintMisspelledMark(orig_x, e.str, e.font, e.pos, e.change.changed());
751 // If outer row has changed, nested insets are repaint completely.
752 pi_.base.bv->coordCache().insets().add(e.inset, int(x_), yo_);
753 paintInset(e.inset, e.pos);
754 foreign_descent = e.dim.descent();
759 paintSeparator(e.full_width(), e.font);
762 // The line that indicates word in a different language
763 paintForeignMark(orig_x, e.font.language(), foreign_descent);
765 // change tracking (not for insets that track their own changes)
766 if (e.type != Row::INSET || ! e.inset->canTrackChanges())
767 paintChange(orig_x, e.font, e.change);
771 x_ = row_.left_margin + xo_;
777 void RowPainter::paintText2()
779 //LYXERR0("-------------------------------------------------------");
780 pos_type const end = row_.endpos();
781 // Spaces at logical line breaks in bidi text must be skipped during
782 // painting. However, they may appear visually in the middle
783 // of a row; they must be skipped, wherever they are...
784 // * logically "abc_[HEBREW_\nHEBREW]"
785 // * visually "abc_[_WERBEH\nWERBEH]"
786 pos_type skipped_sep_vpos = -1;
787 pos_type body_pos = par_.beginOfBody();
789 (body_pos > end || !par_.isLineSeparator(body_pos - 1))) {
793 Layout const & layout = par_.layout();
795 Change change_running;
796 int change_last_x = 0;
798 // check for possible inline completion
799 DocIterator const & inlineCompletionPos = pi_.base.bv->inlineCompletionPos();
800 pos_type inlineCompletionVPos = -1;
801 if (inlineCompletionPos.inTexted()
802 && inlineCompletionPos.text() == &text_
803 && inlineCompletionPos.pit() == pit_
804 && inlineCompletionPos.pos() - 1 >= row_.pos()
805 && inlineCompletionPos.pos() - 1 < row_.endpos()) {
806 // draw logically behind the previous character
807 inlineCompletionVPos = bidi_.log2vis(inlineCompletionPos.pos() - 1);
810 // Use font span to speed things up, see below
814 // If the last logical character is a separator, don't paint it, unless
815 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
816 if (end > 0 && end < par_.size() && par_.isSeparator(end - 1))
817 skipped_sep_vpos = bidi_.log2vis(end - 1);
819 for (pos_type vpos = row_.pos(); vpos < end; ) {
820 if (x_ > pi_.base.bv->workWidth())
823 // Skip the separator at the logical end of the row
824 if (vpos == skipped_sep_vpos) {
829 pos_type const pos = bidi_.vis2log(vpos);
831 if (pos >= par_.size()) {
836 // Use font span to speed things up, see above
837 if (!font_span.contains(pos)) {
838 font_span = par_.fontSpan(pos);
839 font = text_metrics_.displayFont(pit_, pos);
841 // split font span if inline completion is inside
842 if (inlineCompletionVPos != -1
843 && font_span.contains(inlineCompletionPos.pos()))
844 font_span.last = inlineCompletionPos.pos();
847 // Note that this value will only be used in
848 // situations where no ligature of composition of
849 // characters is needed. (see comments in uses of width_pos).
850 const int width_pos = pm_.singleWidth(pos, font);
852 Change const & change = par_.lookupChange(pos);
853 if (change.changed() && !change_running.changed()) {
854 change_running = change;
855 change_last_x = int(x_);
858 Inset const * inset = par_.getInset(pos);
859 bool const highly_editable_inset = inset
860 && inset->editable();
862 // If we reach the end of a change or if the author changes, paint it.
863 // We also don't paint across things like tables
864 if (change_running.changed() && (highly_editable_inset
865 || !change.changed() || !change_running.isSimilarTo(change))) {
866 // Calculate 1/3 height of the buffer's default font
867 FontMetrics const & fm
868 = theFontMetrics(pi_.base.bv->buffer().params().getFont());
869 int const y_bar = change_running.deleted() ?
870 yo_ - fm.maxAscent() / 3 : yo_ + 2 * solid_line_offset_ + solid_line_thickness_;
871 pi_.pain.line(change_last_x, y_bar, int(x_), y_bar,
872 change_running.color(), Painter::line_solid, solid_line_thickness_);
874 // Change might continue with a different author or type
875 if (change.changed() && !highly_editable_inset) {
876 change_running = change;
877 change_last_x = int(x_);
879 change_running.setUnchanged();
882 if (body_pos > 0 && pos == body_pos - 1) {
883 int const lwidth = theFontMetrics(labelFont())
884 .width(layout.labelsep);
886 // width_pos is either the width of a space or an inset
887 x_ += row_.label_hfill + lwidth - width_pos;
890 // Is the inline completion in front of character?
891 if (font.isRightToLeft() && vpos == inlineCompletionVPos)
892 paintInlineCompletion(font);
894 if (par_.isSeparator(pos)) {
895 Font const orig_font = text_metrics_.displayFont(pit_, pos);
896 double const orig_x = x_;
897 // width_pos is the width of a space
898 double separator_width = width_pos;
900 separator_width += row_.separator;
901 paintSeparator(separator_width, orig_font);
902 paintForeignMark(orig_x, orig_font.language());
906 // If outer row has changed, nested insets are repaint completely.
907 pi_.base.bv->coordCache().insets().add(inset, int(x_), yo_);
908 paintInset(inset, pos);
912 // paint as many characters as possible.
913 paintFromPos(vpos, change_running.changed());
916 // Is the inline completion after character?
917 if (!font.isRightToLeft() && vpos - 1 == inlineCompletionVPos)
918 paintInlineCompletion(font);
921 // if we reach the end of a struck out range, paint it
922 if (change_running.changed()) {
923 FontMetrics const & fm
924 = theFontMetrics(pi_.base.bv->buffer().params().getFont());
925 int const y_bar = change_running.deleted() ?
926 yo_ - fm.maxAscent() / 3 : yo_ + 2 * solid_line_offset_ + solid_line_thickness_;
927 pi_.pain.line(change_last_x, y_bar, int(x_), y_bar,
928 change_running.color(), Painter::line_solid, solid_line_thickness_);
929 change_running.setUnchanged();
934 void RowPainter::paintSelection() const
936 if (!row_.selection())
938 Cursor const & curs = pi_.base.bv->cursor();
939 DocIterator beg = curs.selectionBegin();
941 beg.pos() = row_.sel_beg;
943 DocIterator end = curs.selectionEnd();
945 end.pos() = row_.sel_end;
947 bool const begin_boundary = beg.pos() >= row_.endpos();
948 bool const end_boundary = row_.sel_end == row_.endpos();
950 DocIterator cur = beg;
951 cur.boundary(begin_boundary);
952 int x1 = text_metrics_.cursorX(beg.top(), begin_boundary);
953 int x2 = text_metrics_.cursorX(end.top(), end_boundary);
954 int const y1 = yo_ - row_.ascent();
955 int const y2 = y1 + row_.height();
957 int const rm = text_.isMainText() ? pi_.base.bv->rightMargin() : 0;
958 int const lm = text_.isMainText() ? pi_.base.bv->leftMargin() : 0;
961 if (row_.begin_margin_sel) {
962 if (text_.isRTL(beg.paragraph())) {
963 pi_.pain.fillRectangle(int(xo_ + x1), y1,
964 text_metrics_.width() - rm - x1, y2 - y1, Color_selection);
966 pi_.pain.fillRectangle(int(xo_ + lm), y1, x1 - lm, y2 - y1,
971 if (row_.end_margin_sel) {
972 if (text_.isRTL(beg.paragraph())) {
973 pi_.pain.fillRectangle(int(xo_ + lm), y1, x2 - lm, y2 - y1,
976 pi_.pain.fillRectangle(int(xo_ + x2), y1, text_metrics_.width() - rm - x2,
977 y2 - y1, Color_selection);
981 // if we are on a boundary from the beginning, it's probably
982 // a RTL boundary and we jump to the other side directly as this
983 // segement is 0-size and confuses the logic below
987 // go through row and draw from RTL boundary to RTL boundary
989 bool draw_now = false;
991 // simplified cursorForward code below which does not
992 // descend into insets and which does not go into the
993 // next line. Compare the logic with the original cursorForward
995 // if left of boundary -> just jump to right side, but
996 // for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
997 if (cur.boundary()) {
999 } else if (text_metrics_.isRTLBoundary(cur.pit(), cur.pos() + 1)) {
1000 // in front of RTL boundary -> Stay on this side of the boundary
1001 // because: ab|cDDEEFFghi -> abc|DDEEFFghi
1010 if (cur.pos() == row_.endpos())
1015 // the previous segment was just drawn, now the next starts
1016 x1 = text_metrics_.cursorX(cur.top(), cur.boundary());
1019 if (!(cur < end) || draw_now) {
1020 x2 = text_metrics_.cursorX(cur.top(), cur.boundary());
1021 pi_.pain.fillRectangle(int(xo_ + min(x1, x2)), y1, abs(x2 - x1),
1022 y2 - y1, Color_selection);
1024 // reset x1, so it is set again next round (which will be on the
1025 // right side of a boundary or at the selection end)
1032 void RowPainter::paintInlineCompletion(Font const & font)
1034 docstring completion = pi_.base.bv->inlineCompletion();
1035 FontInfo f = font.fontInfo();
1036 bool rtl = font.isRightToLeft();
1038 // draw the unique and the non-unique completion part
1039 // Note: this is not time-critical as it is
1040 // only done once per screen.
1041 size_t uniqueTo = pi_.base.bv->inlineCompletionUniqueChars();
1042 docstring s1 = completion.substr(0, uniqueTo);
1043 docstring s2 = completion.substr(uniqueTo);
1044 ColorCode c1 = Color_inlinecompletion;
1045 ColorCode c2 = Color_nonunique_inlinecompletion;
1055 pi_.pain.text(int(x_), yo_, s1, f);
1056 x_ += theFontMetrics(font).width(s1);
1061 pi_.pain.text(int(x_), yo_, s2, f);
1062 x_ += theFontMetrics(font).width(s2);