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 if (lyxrc.zoom >= 200) {
68 // derive the line thickness from zoom factor
69 // the zoom is given in percent
70 // (increase thickness at 250%, 450% etc.)
71 solid_line_thickness_ = (lyxrc.zoom + 50) / 200;
72 // adjust line_offset_ too
73 solid_line_offset_ = 1 + solid_line_thickness_ / 2;
75 if (lyxrc.zoom >= 100) {
76 // derive the line thickness from zoom factor
77 // the zoom is given in percent
78 // (increase thickness at 150%, 250% etc.)
79 dotted_line_thickness_ = (lyxrc.zoom + 50) / 100;
80 // adjust line_offset_ too
81 dotted_line_offset_ = 1 + dotted_line_thickness_ / 2;
84 x_ = row_.left_margin + xo_;
86 //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo_ << " yo: " << yo_ << endl;
90 LBUFERR(pit < int(text.paragraphs().size()));
94 FontInfo RowPainter::labelFont() const
96 FontInfo f = text_.labelFont(par_);
98 if (row_.begin_margin_sel || pi_.selected)
99 f.setPaintColor(Color_selectiontext);
104 // If you want to debug inset metrics uncomment the following line:
105 //#define DEBUG_METRICS
106 // This draws green lines around each inset.
109 void RowPainter::paintInset(Inset const * inset, Font const & font,
110 Change const & change,
114 bool const pi_selected = pi_.selected;
115 Cursor const & cur = pi_.base.bv->cursor();
116 if (cur.selection() && cur.text() == &text_
117 && cur.normalAnchor().text() == &text_)
118 pi_.selected = row_.sel_beg <= pos && row_.sel_end > pos;
120 LASSERT(inset, return);
121 // Backup full_repaint status because some insets (InsetTabular)
122 // requires a full repaint
123 bool const pi_full_repaint = pi_.full_repaint;
124 bool const pi_do_spellcheck = pi_.do_spellcheck;
125 Change const pi_change = pi_.change_;
127 pi_.base.font = inset->inheritFont() ? font.fontInfo() :
128 pi_.base.bv->buffer().params().getFont().fontInfo();
129 pi_.ltr_pos = !font.isVisibleRightToLeft();
130 pi_.change_ = change_.changed() ? change_ : change;
131 pi_.do_spellcheck &= inset->allowSpellCheck();
133 int const x1 = int(x_);
134 pi_.base.bv->coordCache().insets().add(inset, x1, yo_);
135 // insets are painted completely. Recursive
136 // FIXME: it is wrong to completely paint the background
137 // if we want to do single row painting.
138 inset->drawBackground(pi_, x1, yo_);
139 inset->drawSelection(pi_, x1, yo_);
140 inset->draw(pi_, x1, yo_);
142 Dimension const & dim = pi_.base.bv->coordCache().insets().dim(inset);
144 paintForeignMark(x_, font.language(), dim.descent());
148 // Restore full_repaint status.
149 pi_.full_repaint = pi_full_repaint;
150 pi_.change_ = pi_change;
151 pi_.do_spellcheck = pi_do_spellcheck;
152 pi_.selected = pi_selected;
155 int const x2 = x1 + dim.wid;
156 int const y1 = yo_ + dim.des;
157 int const y2 = yo_ - dim.asc;
158 pi_.pain.line(x1, y1, x1, y2, Color_green);
159 pi_.pain.line(x1, y1, x2, y1, Color_green);
160 pi_.pain.line(x2, y1, x2, y2, Color_green);
161 pi_.pain.line(x1, y2, x2, y2, Color_green);
166 void RowPainter::paintForeignMark(double orig_x, Language const * lang, int desc) const
168 if (!lyxrc.mark_foreign_language)
170 if (lang == latex_language)
172 if (lang == pi_.base.bv->buffer().params().language)
175 int const y = yo_ + solid_line_offset_ + desc + solid_line_thickness_ / 2;
176 pi_.pain.line(int(orig_x), y, int(x_), y, Color_language,
177 Painter::line_solid, solid_line_thickness_);
181 void RowPainter::paintMisspelledMark(double const orig_x,
182 Row::Element const & e) const
184 // if changed the misspelled marker gets placed slightly lower than normal
185 // to avoid drawing at the same vertical offset
186 int const y = yo_ + solid_line_offset_ + solid_line_thickness_
187 + (e.change.changed() ? solid_line_thickness_ + 1 : 0)
188 + dotted_line_offset_;
190 //FIXME: this could be computed only once, it is probably not costly.
191 // check for cursor position
192 // don't draw misspelled marker for words at cursor position
193 // we don't want to disturb the process of text editing
194 DocIterator const nw = pi_.base.bv->cursor().newWord();
196 if (!nw.empty() && par_.id() == nw.paragraph().id()) {
198 if (cpos > 0 && cpos == par_.size() && !par_.isWordSeparator(cpos-1))
200 else if (cpos > 0 && par_.isWordSeparator(cpos))
204 pos_type pos = e.pos;
205 while (pos < e.pos + pos_type(e.str.length())) {
206 if (!par_.isMisspelled(pos)) {
211 FontSpan const & range = par_.getSpellRange(pos);
213 // Skip element which are being edited
214 if (range.contains(cpos)) {
215 // the range includes the last element
216 pos = range.last + 1;
220 FontMetrics const & fm = theFontMetrics(e.font);
221 int x1 = fm.pos2x(e.str, range.first - e.pos,
223 int x2 = fm.pos2x(e.str, min(range.last - e.pos + 1,
224 pos_type(e.str.length())),
229 pi_.pain.line(int(orig_x) + x1, y, int(orig_x) + x2, y,
231 Painter::line_onoffdash, dotted_line_thickness_);
232 pos = range.last + 1;
237 void RowPainter::paintStringAndSel(Row::Element const & e)
239 // at least part of text selected?
240 bool const some_sel = (e.endpos >= row_.sel_beg && e.pos < row_.sel_end)
242 // all the text selected?
243 bool const all_sel = (e.pos >= row_.sel_beg && e.endpos < row_.sel_end)
246 if (all_sel || e.change.changed()) {
248 Color const col = e.change.changed() ? e.change.color()
249 : Color_selectiontext;
250 copy.fontInfo().setPaintColor(col);
251 pi_.pain.text(int(x_), yo_, e.str, copy, e.extra);
252 } else if (!some_sel) {
253 pi_.pain.text(int(x_), yo_, e.str, e.font, e.extra);
255 pi_.pain.text(int(x_), yo_, e.str, e.font, Color_selectiontext,
256 max(row_.sel_beg, e.pos) - e.pos,
257 min(row_.sel_end, e.endpos) - e.pos, e.extra);
259 x_ += e.full_width();
263 void RowPainter::paintChange(double orig_x, Font const & font,
264 Change const & change) const
266 if (!change.changed())
268 // Calculate 1/3 height of font
269 FontMetrics const & fm = theFontMetrics(font);
270 int const y_bar = change.deleted() ? yo_ - fm.maxAscent() / 3
271 : yo_ + 2 * solid_line_offset_ + solid_line_thickness_;
272 pi_.pain.line(int(orig_x), y_bar, int(x_), y_bar,
273 change.color(), Painter::line_solid, solid_line_thickness_);
277 void RowPainter::paintChangeBar() const
279 pos_type const start = row_.pos();
280 pos_type end = row_.endpos();
282 if (par_.size() == end) {
283 // this is the last row of the paragraph;
284 // thus, we must also consider the imaginary end-of-par character
288 if (start == end || !par_.isChanged(start, end))
291 int const height = text_metrics_.isLastRow(pit_, row_)
295 pi_.pain.fillRectangle(5, yo_ - row_.ascent(), 3, height, Color_changebar);
299 void RowPainter::paintAppendix() const
301 // only draw the appendix frame once (for the main text)
302 if (!par_.params().appendix() || !text_.isMainText())
305 int y = yo_ - row_.ascent();
307 if (par_.params().startOfAppendix())
308 y += 2 * defaultRowHeight();
310 pi_.pain.line(1, y, 1, yo_ + row_.height(), Color_appendix);
311 pi_.pain.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), Color_appendix);
315 void RowPainter::paintDepthBar() const
317 depth_type const depth = par_.getDepth();
322 depth_type prev_depth = 0;
323 if (!text_metrics_.isFirstRow(pit_, row_)) {
324 pit_type pit2 = pit_;
327 prev_depth = pars_[pit2].getDepth();
330 depth_type next_depth = 0;
331 if (!text_metrics_.isLastRow(pit_, row_)) {
332 pit_type pit2 = pit_;
333 if (row_.endpos() >= pars_[pit2].size())
335 next_depth = pars_[pit2].getDepth();
338 for (depth_type i = 1; i <= depth; ++i) {
339 int const w = nestMargin() / 5;
340 int x = int(xo_) + w * i;
341 // only consider the changebar space if we're drawing outermost text
342 if (text_.isMainText())
343 x += changebarMargin();
345 int const starty = yo_ - row_.ascent();
346 int const h = row_.height() - 1 - (i - next_depth - 1) * 3;
348 pi_.pain.line(x, starty, x, starty + h, Color_depthbar);
351 pi_.pain.fillRectangle(x, starty, w, 2, Color_depthbar);
353 pi_.pain.fillRectangle(x, starty + h, w, 2, Color_depthbar);
358 void RowPainter::paintAppendixStart(int y) const
360 FontInfo pb_font = sane_font;
361 pb_font.setColor(Color_appendix);
368 docstring const label = _("Appendix");
369 theFontMetrics(pb_font).rectText(label, w, a, d);
371 int const text_start = int(xo_ + (width_ - w) / 2);
372 int const text_end = text_start + w;
374 pi_.pain.rectText(text_start, y + d, label, pb_font, Color_none, Color_none);
376 pi_.pain.line(int(xo_ + 1), y, text_start, y, Color_appendix);
377 pi_.pain.line(text_end, y, int(xo_ + width_ - 2), y, Color_appendix);
381 void RowPainter::paintTooLargeMarks(bool const left, bool const right) const
384 pi_.pain.line(dotted_line_thickness_, yo_ - row_.ascent(),
385 dotted_line_thickness_, yo_ + row_.descent(),
387 Painter::line_onoffdash, dotted_line_thickness_);
389 int const wwidth = pi_.base.bv->workWidth() - dotted_line_thickness_;
390 pi_.pain.line(wwidth, yo_ - row_.ascent(),
391 wwidth, yo_ + row_.descent(),
393 Painter::line_onoffdash, dotted_line_thickness_);
398 void RowPainter::paintFirst() const
400 Layout const & layout = par_.layout();
402 // start of appendix?
403 if (par_.params().startOfAppendix())
404 paintAppendixStart(yo_ - row_.ascent() + 2 * defaultRowHeight());
406 bool const is_first =
407 text_.isFirstInSequence(pit_) || !layout.isParagraphGroup();
408 //lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << endl;
410 if (layout.labelIsInline()
411 && (layout.labeltype != LABEL_STATIC || is_first))
413 else if (is_first && layout.labelIsAbove())
414 paintTopLevelLabel();
418 void RowPainter::paintLabel() const
420 docstring const str = par_.labelString();
424 bool const is_rtl = text_.isRTL(par_);
425 Layout const & layout = par_.layout();
426 FontInfo const font = labelFont();
427 FontMetrics const & fm = theFontMetrics(font);
431 x = width_ - row_.right_margin + fm.width(layout.labelsep);
433 x = x_ - fm.width(layout.labelsep) - fm.width(str);
435 pi_.pain.text(int(x), yo_, str, font);
439 void RowPainter::paintTopLevelLabel() const
441 BufferParams const & bparams = pi_.base.bv->buffer().params();
442 bool const is_rtl = text_.isRTL(par_);
443 ParagraphParameters const & pparams = par_.params();
444 Layout const & layout = par_.layout();
445 FontInfo const font = labelFont();
446 docstring const str = par_.labelString();
450 double spacing_val = 1.0;
451 if (!pparams.spacing().isDefault())
452 spacing_val = pparams.spacing().getValue();
454 spacing_val = bparams.spacing().getValue();
456 FontMetrics const & fm = theFontMetrics(font);
458 int const labeladdon = int(fm.maxHeight()
459 * layout.spacing.getValue() * spacing_val);
462 int(fm.maxDescent() * layout.spacing.getValue() * spacing_val
463 + (layout.labelbottomsep * defaultRowHeight()));
466 if (layout.labeltype == LABEL_CENTERED) {
467 x = row_.left_margin + (width_ - row_.left_margin - row_.right_margin) / 2;
468 x -= fm.width(str) / 2;
470 x = width_ - row_.right_margin - fm.width(str);
472 pi_.pain.text(int(x), yo_ - maxdesc - labeladdon, str, font);
476 /** Check if the current paragraph is the last paragraph in a
478 static int getEndLabel(pit_type p, Text const & text)
480 ParagraphList const & pars = text.paragraphs();
482 depth_type par_depth = pars[p].getDepth();
483 while (pit != pit_type(pars.size())) {
484 Layout const & layout = pars[pit].layout();
485 int const endlabeltype = layout.endlabeltype;
487 if (endlabeltype != END_LABEL_NO_LABEL) {
488 if (p + 1 == pit_type(pars.size()))
491 depth_type const next_depth =
492 pars[p + 1].getDepth();
493 if (par_depth > next_depth ||
494 (par_depth == next_depth && layout != pars[p + 1].layout()))
500 pit = text.outerHook(pit);
501 if (pit != pit_type(pars.size()))
502 par_depth = pars[pit].getDepth();
504 return END_LABEL_NO_LABEL;
508 void RowPainter::paintLast()
510 bool const is_rtl = text_.isRTL(par_);
511 int const endlabel = getEndLabel(pit_, text_);
513 // paint imaginary end-of-paragraph character
515 Change const & change = par_.lookupChange(par_.size());
516 if (change.changed()) {
517 FontMetrics const & fm =
518 theFontMetrics(pi_.base.bv->buffer().params().getFont());
519 int const length = fm.maxAscent() / 2;
520 Color col = change.color();
522 pi_.pain.line(int(x_) + 1, yo_ + 2, int(x_) + 1, yo_ + 2 - length, col,
523 Painter::line_solid, 3);
525 if (change.deleted()) {
526 pi_.pain.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1 + length,
527 yo_ + 2, col, Painter::line_solid, 3);
529 pi_.pain.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1,
530 yo_ + 2, col, Painter::line_solid, 3);
538 case END_LABEL_FILLED_BOX: {
539 FontInfo const font = labelFont();
540 FontMetrics const & fm = theFontMetrics(font);
541 int const size = int(0.75 * fm.maxAscent());
542 int const y = yo_ - size;
543 int const max_row_width = width_ - size - Inset::TEXT_TO_INSET_OFFSET;
544 int x = is_rtl ? nestMargin() + changebarMargin()
545 : max_row_width - row_.right_margin;
547 // If needed, move the box a bit to avoid overlapping with text.
548 int const rem = max_row_width - row_.width();
550 x += is_rtl ? rem : - rem;
552 if (endlabel == END_LABEL_BOX)
553 pi_.pain.rectangle(x, y, size, size, Color_eolmarker);
555 pi_.pain.fillRectangle(x, y, size, size, Color_eolmarker);
559 case END_LABEL_STATIC: {
560 FontInfo const font = labelFont();
561 FontMetrics const & fm = theFontMetrics(font);
562 docstring const & str = par_.layout().endlabelstring();
563 double const x = is_rtl ? x_ - fm.width(str) : x_;
564 pi_.pain.text(int(x), yo_, str, font);
568 case END_LABEL_NO_LABEL:
574 void RowPainter::paintOnlyInsets()
576 Row::const_iterator cit = row_.begin();
577 Row::const_iterator const & end = row_.end();
578 for ( ; cit != end ; ++cit) {
579 Row::Element const & e = *cit;
580 if (e.type == Row::INSET) {
581 // If outer row has changed, nested insets are repainted completely.
582 pi_.base.bv->coordCache().insets().add(e.inset, int(x_), yo_);
583 bool const nested_inset =
584 (e.inset->asInsetMath() && !e.inset->asInsetMath()->asMacroTemplate())
585 || e.inset->asInsetText() || e.inset->asInsetTabular();
587 x_ += e.full_width();
590 paintInset(e.inset, e.font, e.change, e.pos);
592 x_ += e.full_width();
597 void RowPainter::paintText()
599 Row::const_iterator cit = row_.begin();
600 Row::const_iterator const & end = row_.end();
601 for ( ; cit != end ; ++cit) {
602 double const orig_x = x_;
603 Row::Element const & e = *cit;
604 int foreign_descent = 0;
609 paintStringAndSel(e);
611 // Paint the spelling marks if enabled.
612 if (lyxrc.spellcheck_continuously && pi_.do_spellcheck)
613 paintMisspelledMark(orig_x, e);
616 // If outer row has changed, nested insets are repaint completely.
617 pi_.base.bv->coordCache().insets().add(e.inset, int(x_), yo_);
618 paintInset(e.inset, e.font, e.change, e.pos);
619 foreign_descent = e.dim.descent();
623 pi_.pain.textDecoration(e.font.fontInfo(), int(x_), yo_, int(e.full_width()));
624 x_ += e.full_width();
627 // The line that indicates word in a different language
628 paintForeignMark(orig_x, e.font.language(), foreign_descent);
630 // change tracking (not for insets that track their own changes)
631 if (e.type != Row::INSET || ! e.inset->canTrackChanges())
632 paintChange(orig_x, e.font, e.change);
637 void RowPainter::paintSelection() const
639 if (!row_.selection())
641 Cursor const & curs = pi_.base.bv->cursor();
642 DocIterator beg = curs.selectionBegin();
644 beg.pos() = row_.sel_beg;
646 DocIterator end = curs.selectionEnd();
648 end.pos() = row_.sel_end;
650 bool const begin_boundary = beg.pos() >= row_.endpos();
651 bool const end_boundary = row_.sel_end == row_.endpos();
653 DocIterator cur = beg;
654 cur.boundary(begin_boundary);
655 int x1 = text_metrics_.cursorX(beg.top(), begin_boundary);
656 int x2 = text_metrics_.cursorX(end.top(), end_boundary);
657 int const y1 = yo_ - row_.ascent();
658 int const y2 = y1 + row_.height();
660 int const rm = text_.isMainText() ? pi_.base.bv->rightMargin() : 0;
661 int const lm = text_.isMainText() ? pi_.base.bv->leftMargin() : 0;
664 if (row_.begin_margin_sel) {
665 if (text_.isRTL(beg.paragraph())) {
666 pi_.pain.fillRectangle(int(xo_ + x1), y1,
667 text_metrics_.width() - rm - x1, y2 - y1, Color_selection);
669 pi_.pain.fillRectangle(int(xo_ + lm), y1, x1 - lm, y2 - y1,
674 if (row_.end_margin_sel) {
675 if (text_.isRTL(beg.paragraph())) {
676 pi_.pain.fillRectangle(int(xo_ + lm), y1, x2 - lm, y2 - y1,
679 pi_.pain.fillRectangle(int(xo_ + x2), y1, text_metrics_.width() - rm - x2,
680 y2 - y1, Color_selection);
684 // if we are on a boundary from the beginning, it's probably
685 // a RTL boundary and we jump to the other side directly as this
686 // segement is 0-size and confuses the logic below
690 // go through row and draw from RTL boundary to RTL boundary
692 bool draw_now = false;
694 // simplified cursorForward code below which does not
695 // descend into insets and which does not go into the
696 // next line. Compare the logic with the original cursorForward
698 // if left of boundary -> just jump to right side, but
699 // for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
700 if (cur.boundary()) {
702 } else if (text_metrics_.isRTLBoundary(cur.pit(), cur.pos() + 1)) {
703 // in front of RTL boundary -> Stay on this side of the boundary
704 // because: ab|cDDEEFFghi -> abc|DDEEFFghi
713 if (cur.pos() == row_.endpos())
718 // the previous segment was just drawn, now the next starts
719 x1 = text_metrics_.cursorX(cur.top(), cur.boundary());
722 if (!(cur < end) || draw_now) {
723 x2 = text_metrics_.cursorX(cur.top(), cur.boundary());
724 pi_.pain.fillRectangle(int(xo_ + min(x1, x2)), y1, abs(x2 - x1),
725 y2 - y1, Color_selection);
727 // reset x1, so it is set again next round (which will be on the
728 // right side of a boundary or at the selection end)