2 * \file src/TextMetrics.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
7 * \author Lars Gullik Bjønnes
8 * \author Jean-Marc Lasgouttes
10 * \author André Pönitz
12 * \author Jürgen Vigna
13 * \author Abdelrazak Younes
15 * Full author contact details are available in file CREDITS.
20 #include "TextMetrics.h"
24 #include "buffer_funcs.h"
25 #include "BufferParams.h"
26 #include "BufferView.h"
27 #include "CoordCache.h"
29 #include "CutAndPaste.h"
30 #include "FuncRequest.h"
32 #include "InsetList.h"
36 #include "MetricsInfo.h"
37 #include "paragraph_funcs.h"
38 #include "ParagraphParameters.h"
39 #include "ParIterator.h"
40 #include "rowpainter.h"
42 #include "TextClass.h"
45 #include "mathed/MacroTable.h"
46 #include "mathed/MathMacroTemplate.h"
48 #include "frontends/FontMetrics.h"
49 #include "frontends/Painter.h"
51 #include "support/debug.h"
53 #include "support/lassert.h"
60 using frontend::FontMetrics
;
62 static int numberOfSeparators(Paragraph
const & par
, Row
const & row
)
64 pos_type
const first
= max(row
.pos(), par
.beginOfBody());
65 pos_type
const last
= row
.endpos() - 1;
67 for (pos_type p
= first
; p
< last
; ++p
) {
68 if (par
.isSeparator(p
))
75 static int numberOfLabelHfills(Paragraph
const & par
, Row
const & row
)
77 pos_type last
= row
.endpos() - 1;
78 pos_type first
= row
.pos();
80 // hfill *DO* count at the beginning of paragraphs!
82 while (first
< last
&& par
.isHfill(first
))
86 last
= min(last
, par
.beginOfBody());
88 for (pos_type p
= first
; p
< last
; ++p
) {
96 static int numberOfHfills(Paragraph
const & par
, Row
const & row
)
98 pos_type
const last
= row
.endpos();
99 pos_type first
= row
.pos();
101 // hfill *DO* count at the beginning of paragraphs!
103 while (first
< last
&& par
.isHfill(first
))
107 first
= max(first
, par
.beginOfBody());
110 for (pos_type p
= first
; p
< last
; ++p
) {
118 /////////////////////////////////////////////////////////////////////
122 /////////////////////////////////////////////////////////////////////
125 TextMetrics::TextMetrics(BufferView
* bv
, Text
* text
)
126 : bv_(bv
), text_(text
)
129 max_width_
= bv_
->workWidth();
130 dim_
.wid
= max_width_
;
134 //text_->updateLabels(bv->buffer());
138 bool TextMetrics::contains(pit_type pit
) const
140 return par_metrics_
.find(pit
) != par_metrics_
.end();
144 ParagraphMetrics
const & TextMetrics::parMetrics(pit_type pit
) const
146 return const_cast<TextMetrics
*>(this)->parMetrics(pit
, true);
151 pair
<pit_type
, ParagraphMetrics
const *> TextMetrics::first() const
153 ParMetricsCache::const_iterator it
= par_metrics_
.begin();
154 return make_pair(it
->first
, &it
->second
);
158 pair
<pit_type
, ParagraphMetrics
const *> TextMetrics::last() const
160 ParMetricsCache::const_reverse_iterator it
= par_metrics_
.rbegin();
161 return make_pair(it
->first
, &it
->second
);
165 ParagraphMetrics
& TextMetrics::parMetrics(pit_type pit
, bool redo
)
167 ParMetricsCache::iterator pmc_it
= par_metrics_
.find(pit
);
168 if (pmc_it
== par_metrics_
.end()) {
169 pmc_it
= par_metrics_
.insert(
170 make_pair(pit
, ParagraphMetrics(text_
->getPar(pit
)))).first
;
172 if (pmc_it
->second
.rows().empty() && redo
)
174 return pmc_it
->second
;
178 int TextMetrics::parPosition(pit_type pit
) const
180 if (pit
< par_metrics_
.begin()->first
)
182 if (pit
> par_metrics_
.rbegin()->first
)
185 return par_metrics_
[pit
].position();
189 bool TextMetrics::metrics(MetricsInfo
& mi
, Dimension
& dim
, int min_width
)
191 LASSERT(mi
.base
.textwidth
> 0, /**/);
192 max_width_
= mi
.base
.textwidth
;
193 // backup old dimension.
194 Dimension
const old_dim
= dim_
;
197 dim_
.wid
= min_width
;
198 pit_type
const npar
= text_
->paragraphs().size();
200 // If there is more than one row, expand the text to
201 // the full allowable width.
202 dim_
.wid
= max_width_
;
204 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
205 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
207 bool changed
= false;
209 for (pit_type pit
= 0; pit
!= npar
; ++pit
) {
210 changed
|= redoParagraph(pit
);
211 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
213 if (dim_
.wid
< pm
.width())
214 dim_
.wid
= pm
.width();
217 dim_
.asc
= par_metrics_
[0].ascent();
218 dim_
.des
= h
- dim_
.asc
;
219 //lyxerr << "dim_.wid " << dim_.wid << endl;
220 //lyxerr << "dim_.asc " << dim_.asc << endl;
221 //lyxerr << "dim_.des " << dim_.des << endl;
223 changed
|= dim_
!= old_dim
;
229 int TextMetrics::rightMargin(ParagraphMetrics
const & pm
) const
231 return main_text_
? pm
.rightMargin(*bv_
) : 0;
235 int TextMetrics::rightMargin(pit_type
const pit
) const
237 return main_text_
? par_metrics_
[pit
].rightMargin(*bv_
) : 0;
241 void TextMetrics::applyOuterFont(Font
& font
) const
244 lf
.fontInfo().reduce(bv_
->buffer().params().getFont().fontInfo());
245 lf
.fontInfo().realize(font
.fontInfo());
246 lf
.setLanguage(font
.language());
251 Font
TextMetrics::displayFont(pit_type pit
, pos_type pos
) const
253 LASSERT(pos
>= 0, /**/);
255 ParagraphList
const & pars
= text_
->paragraphs();
256 Paragraph
const & par
= pars
[pit
];
257 Layout
const & layout
= par
.layout();
258 Buffer
const & buffer
= bv_
->buffer();
260 BufferParams
const & params
= buffer
.params();
261 pos_type
const body_pos
= par
.beginOfBody();
263 // We specialize the 95% common case:
264 if (!par
.getDepth()) {
265 Font f
= par
.getFontSettings(params
, pos
);
266 if (!text_
->isMainText(buffer
))
268 bool lab
= layout
.labeltype
== LABEL_MANUAL
&& pos
< body_pos
;
270 FontInfo
const & lf
= lab
? layout
.labelfont
: layout
.font
;
271 FontInfo rlf
= lab
? layout
.reslabelfont
: layout
.resfont
;
273 // In case the default family has been customized
274 if (lf
.family() == INHERIT_FAMILY
)
275 rlf
.setFamily(params
.getFont().fontInfo().family());
276 f
.fontInfo().realize(rlf
);
280 // The uncommon case need not be optimized as much
281 FontInfo
const & layoutfont
= pos
< body_pos
?
282 layout
.labelfont
: layout
.font
;
284 Font font
= par
.getFontSettings(params
, pos
);
285 font
.fontInfo().realize(layoutfont
);
287 if (!text_
->isMainText(buffer
))
288 applyOuterFont(font
);
290 // Realize against environment font information
291 // NOTE: the cast to pit_type should be removed when pit_type
292 // changes to a unsigned integer.
293 if (pit
< pit_type(pars
.size()))
294 font
.fontInfo().realize(outerFont(pit
, pars
).fontInfo());
296 // Realize with the fonts of lesser depth.
297 font
.fontInfo().realize(params
.getFont().fontInfo());
303 bool TextMetrics::isRTL(CursorSlice
const & sl
, bool boundary
) const
305 if (!lyxrc
.rtl_support
|| !sl
.text())
309 if (boundary
&& sl
.pos() > 0)
312 return displayFont(sl
.pit(), sl
.pos() + correction
).isVisibleRightToLeft();
316 bool TextMetrics::isRTLBoundary(pit_type pit
, pos_type pos
) const
318 if (!lyxrc
.rtl_support
)
321 // no RTL boundary at paragraph start
325 Font
const & left_font
= displayFont(pit
, pos
- 1);
327 return isRTLBoundary(pit
, pos
, left_font
);
331 bool TextMetrics::isRTLBoundary(pit_type pit
, pos_type pos
,
332 Font
const & font
) const
334 if (!lyxrc
.rtl_support
)
337 // no RTL boundary at paragraph start
341 ParagraphMetrics
& pm
= par_metrics_
[pit
];
342 // no RTL boundary in empty paragraph
343 if (pm
.rows().empty())
346 pos_type endpos
= pm
.getRow(pos
- 1, false).endpos();
347 pos_type startpos
= pm
.getRow(pos
, false).pos();
348 // no RTL boundary at line start:
349 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
351 if (pos
== startpos
&& pos
== endpos
) // start of cur row, end of prev row
354 Paragraph
const & par
= text_
->getPar(pit
);
355 bool left
= font
.isVisibleRightToLeft();
357 if (pos
== par
.size())
358 right
= par
.isRTL(bv_
->buffer().params());
360 right
= displayFont(pit
, pos
).isVisibleRightToLeft();
362 // no RTL boundary at line break:
363 // abc|\n -> move right -> abc\n (and not: abc\n|
365 if (startpos
== pos
&& endpos
== pos
&& endpos
!= par
.size()
366 && (par
.isNewline(pos
- 1)
367 || par
.isLineSeparator(pos
- 1)
368 || par
.isSeparator(pos
- 1)))
371 return left
!= right
;
375 bool TextMetrics::redoParagraph(pit_type
const pit
)
377 Paragraph
& par
= text_
->getPar(pit
);
378 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
379 // redoParagraph() recursively inside parMetrics.
380 Dimension old_dim
= parMetrics(pit
, false).dim();
381 ParagraphMetrics
& pm
= par_metrics_
[pit
];
384 Buffer
& buffer
= bv_
->buffer();
385 main_text_
= (text_
== &buffer
.text());
386 bool changed
= false;
388 // FIXME: This check ought to be done somewhere else. It is the reason
389 // why text_ is not const. But then, where else to do it?
390 // Well, how can you end up with either (a) a biblio environment that
391 // has no InsetBibitem or (b) a biblio environment with more than one
392 // InsetBibitem? I think the answer is: when paragraphs are merged;
393 // when layout is set; when material is pasted.
394 int const moveCursor
= par
.checkBiblio(buffer
);
396 const_cast<Cursor
&>(bv_
->cursor()).posForward();
397 else if (moveCursor
< 0) {
398 Cursor
& cursor
= const_cast<Cursor
&>(bv_
->cursor());
399 if (cursor
.pos() >= -moveCursor
)
400 cursor
.posBackward();
403 // Optimisation: this is used in the next two loops
404 // so better to calculate that once here.
405 int const right_margin
= rightMargin(pm
);
407 // iterator pointing to paragraph to resolve macros
408 DocIterator parPos
= text_
->macrocontextPosition();
412 LYXERR(Debug::INFO
, "MacroContext not initialised!"
413 << " Going through the buffer again and hope"
414 << " the context is better then.");
415 bv_
->buffer().updateLabels();
416 parPos
= text_
->macrocontextPosition();
417 LASSERT(!parPos
.empty(), /**/);
422 // FIXME: We should always use getFont(), see documentation of
423 // noFontChange() in Inset.h.
424 Font
const bufferfont
= buffer
.params().getFont();
425 InsetList::const_iterator ii
= par
.insetList().begin();
426 InsetList::const_iterator iend
= par
.insetList().end();
427 for (; ii
!= iend
; ++ii
) {
428 // position already initialized?
429 if (!parPos
.empty()) {
430 parPos
.pos() = ii
->pos
;
432 // A macro template would normally not be visible
433 // by itself. But the tex macro semantics allow
434 // recursion, so we artifically take the context
435 // after the macro template to simulate this.
436 if (ii
->inset
->lyxCode() == MATHMACRO_CODE
)
440 // do the metric calculation
442 int const w
= max_width_
- leftMargin(max_width_
, pit
, ii
->pos
)
444 Font
const & font
= ii
->inset
->noFontChange() ?
445 bufferfont
: displayFont(pit
, ii
->pos
);
446 MacroContext
mc(buffer
, parPos
);
447 MetricsInfo
mi(bv_
, font
.fontInfo(), w
, mc
);
448 ii
->inset
->metrics(mi
, dim
);
449 Dimension
const old_dim
= pm
.insetDimension(ii
->inset
);
450 if (old_dim
!= dim
) {
451 pm
.setInsetDimension(ii
->inset
, dim
);
456 par
.setBeginOfBody();
458 size_t row_index
= 0;
459 // maximum pixel width of a row
460 int width
= max_width_
- right_margin
; // - leftMargin(max_width_, pit, row);
463 pos_type end
= rowBreakPoint(width
, pit
, first
);
464 if (row_index
|| end
< par
.size())
465 // If there is more than one row, expand the text to
466 // the full allowable width. This setting here is needed
467 // for the computeRowMetrics() below.
468 dim_
.wid
= max_width_
;
470 dim
= rowHeight(pit
, first
, end
);
471 dim
.wid
= rowWidth(right_margin
, pit
, first
, end
);
472 if (row_index
== pm
.rows().size())
473 pm
.rows().push_back(Row());
474 Row
& row
= pm
.rows()[row_index
];
475 row
.setChanged(false);
478 row
.setDimension(dim
);
479 int const max_row_width
= max(dim_
.wid
, dim
.wid
);
480 computeRowMetrics(pit
, row
, max_row_width
);
484 pm
.dim().wid
= max(pm
.dim().wid
, dim
.wid
);
485 pm
.dim().des
+= dim
.height();
486 } while (first
< par
.size());
488 if (row_index
< pm
.rows().size())
489 pm
.rows().resize(row_index
);
491 // Make sure that if a par ends in newline, there is one more row
493 if (first
> 0 && par
.isNewline(first
- 1)) {
494 Dimension dim
= rowHeight(pit
, first
, first
);
495 dim
.wid
= rowWidth(right_margin
, pit
, first
, first
);
496 if (row_index
== pm
.rows().size())
497 pm
.rows().push_back(Row());
498 Row
& row
= pm
.rows()[row_index
];
499 row
.setChanged(false);
502 row
.setDimension(dim
);
503 int const max_row_width
= max(dim_
.wid
, dim
.wid
);
504 computeRowMetrics(pit
, row
, max_row_width
);
505 pm
.dim().des
+= dim
.height();
508 pm
.dim().asc
+= pm
.rows()[0].ascent();
509 pm
.dim().des
-= pm
.rows()[0].ascent();
511 changed
|= old_dim
.height() != pm
.dim().height();
517 void TextMetrics::computeRowMetrics(pit_type
const pit
,
518 Row
& row
, int width
) const
523 Buffer
& buffer
= bv_
->buffer();
524 Paragraph
const & par
= text_
->getPar(pit
);
526 double w
= width
- row
.width();
527 // FIXME: put back this assertion when the crash on new doc is solved.
528 //LASSERT(w >= 0, /**/);
530 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
531 //lyxerr << "row.width() " << row.width() << endl;
532 //lyxerr << "w " << w << endl;
534 bool const is_rtl
= text_
->isRTL(buffer
, par
);
536 row
.x
= rightMargin(pit
);
538 row
.x
= leftMargin(max_width_
, pit
, row
.pos());
540 // is there a manual margin with a manual label
541 Layout
const & layout
= par
.layout();
543 if (layout
.margintype
== MARGIN_MANUAL
544 && layout
.labeltype
== LABEL_MANUAL
) {
545 /// We might have real hfills in the label part
546 int nlh
= numberOfLabelHfills(par
, row
);
548 // A manual label par (e.g. List) has an auto-hfill
549 // between the label text and the body of the
551 // But we don't want to do this auto hfill if the par
556 if (nlh
&& !par
.getLabelWidthString().empty())
557 row
.label_hfill
= labelFill(pit
, row
) / double(nlh
);
561 // are there any hfills in the row?
562 if (int const nh
= numberOfHfills(par
, row
)) {
564 hfill
= w
/ double(nh
);
565 // we don't have to look at the alignment if it is ALIGN_LEFT and
566 // if the row is already larger then the permitted width as then
567 // we force the LEFT_ALIGN'edness!
568 } else if (int(row
.width()) < max_width_
) {
569 // is it block, flushleft or flushright?
570 // set x how you need it
572 if (par
.params().align() == LYX_ALIGN_LAYOUT
)
573 align
= layout
.align
;
575 align
= par
.params().align();
577 // handle alignment inside tabular cells
578 Inset
const & owner
= par
.inInset();
579 switch (owner
.contentAlignment()) {
580 case LYX_ALIGN_CENTER
:
582 case LYX_ALIGN_RIGHT
:
583 if (align
== LYX_ALIGN_NONE
584 || align
== LYX_ALIGN_BLOCK
)
585 align
= owner
.contentAlignment();
588 // unchanged (use align)
592 // Display-style insets should always be on a centered row
593 if (Inset
const * inset
= par
.getInset(row
.pos())) {
594 switch (inset
->display()) {
595 case Inset::AlignLeft
:
596 align
= LYX_ALIGN_BLOCK
;
598 case Inset::AlignCenter
:
599 align
= LYX_ALIGN_CENTER
;
602 // unchanged (use align)
604 case Inset::AlignRight
:
605 align
= LYX_ALIGN_RIGHT
;
611 case LYX_ALIGN_BLOCK
: {
612 int const ns
= numberOfSeparators(par
, row
);
613 bool disp_inset
= false;
614 if (row
.endpos() < par
.size()) {
615 Inset
const * in
= par
.getInset(row
.endpos());
617 disp_inset
= in
->display();
619 // If we have separators, this is not the last row of a
620 // par, does not end in newline, and is not row above a
621 // display inset... then stretch it
623 && row
.endpos() < par
.size()
624 && !par
.isNewline(row
.endpos() - 1)
627 row
.separator
= w
/ ns
;
628 //lyxerr << "row.separator " << row.separator << endl;
629 //lyxerr << "ns " << ns << endl;
635 case LYX_ALIGN_RIGHT
:
638 case LYX_ALIGN_CENTER
:
645 pos_type body_pos
= par
.beginOfBody();
646 pos_type end
= row
.endpos();
649 && (body_pos
> end
|| !par
.isLineSeparator(body_pos
- 1)))
651 row
.x
+= theFontMetrics(text_
->labelFont(buffer
, par
)).
652 width(layout
.labelsep
);
654 row
.x
+= row
.label_hfill
;
658 pos_type
const endpos
= row
.endpos();
659 pos_type body_pos
= par
.beginOfBody();
661 && (body_pos
> endpos
|| !par
.isLineSeparator(body_pos
- 1)))
664 ParagraphMetrics
& pm
= par_metrics_
[pit
];
665 InsetList::const_iterator ii
= par
.insetList().begin();
666 InsetList::const_iterator iend
= par
.insetList().end();
667 for ( ; ii
!= iend
; ++ii
) {
668 if (ii
->pos
>= endpos
|| ii
->pos
< row
.pos()
669 || (ii
->inset
->lyxCode() != SPACE_CODE
||
670 !ii
->inset
->isStretchableSpace()))
672 Dimension dim
= row
.dimension();
673 if (pm
.hfillExpansion(row
, ii
->pos
))
674 dim
.wid
= int(ii
->pos
>= body_pos
?
675 max(hfill
, 5.0) : row
.label_hfill
);
678 // Cache the inset dimension.
679 bv_
->coordCache().insets().add(ii
->inset
, dim
);
680 pm
.setInsetDimension(ii
->inset
, dim
);
685 int TextMetrics::labelFill(pit_type
const pit
, Row
const & row
) const
687 Buffer
& buffer
= bv_
->buffer();
688 Paragraph
const & par
= text_
->getPar(pit
);
690 pos_type last
= par
.beginOfBody();
691 LASSERT(last
> 0, /**/);
693 // -1 because a label ends with a space that is in the label
696 // a separator at this end does not count
697 if (par
.isLineSeparator(last
))
701 for (pos_type i
= row
.pos(); i
<= last
; ++i
)
702 w
+= singleWidth(pit
, i
);
704 docstring
const & label
= par
.params().labelWidthString();
708 FontMetrics
const & fm
709 = theFontMetrics(text_
->labelFont(buffer
, par
));
711 return max(0, fm
.width(label
) - w
);
715 // this needs special handling - only newlines count as a break point
716 static pos_type
addressBreakPoint(pos_type i
, Paragraph
const & par
)
718 pos_type
const end
= par
.size();
721 if (par
.isNewline(i
))
728 int TextMetrics::labelEnd(pit_type
const pit
) const
730 // labelEnd is only needed if the layout fills a flushleft label.
731 if (text_
->getPar(pit
).layout().margintype
!= MARGIN_MANUAL
)
733 // return the beginning of the body
734 return leftMargin(max_width_
, pit
);
740 * Calling Text::getFont is slow. While rebreaking we scan a
741 * paragraph from left to right calling getFont for every char. This
742 * simple class address this problem by hidding an optimization trick
743 * (not mine btw -AB): the font is reused in the whole font span. The
744 * class handles transparently the "hidden" (not part of the fontlist)
745 * label font (as getFont does).
751 FontIterator(TextMetrics
const & tm
,
752 Paragraph
const & par
, pit_type pit
, pos_type pos
)
753 : tm_(tm
), par_(par
), pit_(pit
), pos_(pos
),
754 font_(tm
.displayFont(pit
, pos
)),
755 endspan_(par
.fontSpan(pos
).last
),
756 bodypos_(par
.beginOfBody())
760 Font
const & operator*() const { return font_
; }
763 FontIterator
& operator++()
766 if (pos_
> endspan_
|| pos_
== bodypos_
) {
767 font_
= tm_
.displayFont(pit_
, pos_
);
768 endspan_
= par_
.fontSpan(pos_
).last
;
774 Font
* operator->() { return &font_
; }
778 TextMetrics
const & tm_
;
780 Paragraph
const & par_
;
795 pit_type
TextMetrics::rowBreakPoint(int width
, pit_type
const pit
,
798 Buffer
& buffer
= bv_
->buffer();
799 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
800 Paragraph
const & par
= text_
->getPar(pit
);
801 pos_type
const end
= par
.size();
802 if (pos
== end
|| width
< 0)
805 Layout
const & layout
= par
.layout();
807 if (layout
.margintype
== MARGIN_RIGHT_ADDRESS_BOX
)
808 return addressBreakPoint(pos
, par
);
810 pos_type
const body_pos
= par
.beginOfBody();
812 // check for possible inline completion
813 DocIterator
const & inlineCompletionPos
= bv_
->inlineCompletionPos();
814 pos_type inlineCompletionLPos
= -1;
815 if (inlineCompletionPos
.inTexted()
816 && inlineCompletionPos
.text() == text_
817 && inlineCompletionPos
.pit() == pit
) {
818 // draw logically behind the previous character
819 inlineCompletionLPos
= inlineCompletionPos
.pos() - 1;
822 // Now we iterate through until we reach the right margin
823 // or the end of the par, then choose the possible break
826 int label_end
= labelEnd(pit
);
827 int const left
= leftMargin(max_width_
, pit
, pos
);
830 // pixel width since last breakpoint
833 FontIterator fi
= FontIterator(*this, par
, pit
, pos
);
834 pos_type point
= end
;
836 for ( ; i
< end
; ++i
, ++fi
) {
837 int thiswidth
= pm
.singleWidth(i
, *fi
);
839 // add inline completion width
840 if (inlineCompletionLPos
== i
) {
841 docstring
const & completion
= bv_
->inlineCompletion();
842 if (completion
.length() > 0)
843 thiswidth
+= theFontMetrics(*fi
).width(completion
);
846 // add the auto-hfill from label end to the body
847 if (body_pos
&& i
== body_pos
) {
848 FontMetrics
const & fm
= theFontMetrics(
849 text_
->labelFont(buffer
, par
));
850 int add
= fm
.width(layout
.labelsep
);
851 if (par
.isLineSeparator(i
- 1))
852 add
-= singleWidth(pit
, i
- 1);
854 add
= max(add
, label_end
- x
);
859 chunkwidth
+= thiswidth
;
861 // break before a character that will fall off
862 // the right of the row
864 // if no break before, break here
865 if (point
== end
|| chunkwidth
>= width
- left
) {
871 // exit on last registered breakpoint:
875 if (par
.isNewline(i
)) {
879 Inset
const * inset
= 0;
882 if ((inset
= par
.getInset(i
+ 1)) && inset
->display()) {
887 if ((inset
= par
.getInset(i
)) && inset
->display()) {
893 inset
= par
.getInset(i
);
894 if (!inset
|| inset
->isChar()) {
895 // some insets are line separators too
896 if (par
.isLineSeparator(i
)) {
897 // register breakpoint:
904 // maybe found one, but the par is short enough.
905 if (i
== end
&& x
< width
)
908 // manual labels cannot be broken in LaTeX. But we
909 // want to make our on-screen rendering of footnotes
911 if (body_pos
&& point
< body_pos
)
918 int TextMetrics::rowWidth(int right_margin
, pit_type
const pit
,
919 pos_type
const first
, pos_type
const end
) const
921 Buffer
& buffer
= bv_
->buffer();
922 // get the pure distance
923 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
924 Paragraph
const & par
= text_
->getPar(pit
);
925 int w
= leftMargin(max_width_
, pit
, first
);
926 int label_end
= labelEnd(pit
);
928 // check for possible inline completion
929 DocIterator
const & inlineCompletionPos
= bv_
->inlineCompletionPos();
930 pos_type inlineCompletionLPos
= -1;
931 if (inlineCompletionPos
.inTexted()
932 && inlineCompletionPos
.text() == text_
933 && inlineCompletionPos
.pit() == pit
) {
934 // draw logically behind the previous character
935 inlineCompletionLPos
= inlineCompletionPos
.pos() - 1;
938 pos_type
const body_pos
= par
.beginOfBody();
942 FontIterator fi
= FontIterator(*this, par
, pit
, i
);
943 for ( ; i
< end
; ++i
, ++fi
) {
944 if (body_pos
> 0 && i
== body_pos
) {
945 FontMetrics
const & fm
= theFontMetrics(
946 text_
->labelFont(buffer
, par
));
947 w
+= fm
.width(par
.layout().labelsep
);
948 if (par
.isLineSeparator(i
- 1))
949 w
-= singleWidth(pit
, i
- 1);
950 w
= max(w
, label_end
);
952 w
+= pm
.singleWidth(i
, *fi
);
954 // add inline completion width
955 if (inlineCompletionLPos
== i
) {
956 docstring
const & completion
= bv_
->inlineCompletion();
957 if (completion
.length() > 0)
958 w
+= theFontMetrics(*fi
).width(completion
);
963 if (body_pos
> 0 && body_pos
>= end
) {
964 FontMetrics
const & fm
= theFontMetrics(
965 text_
->labelFont(buffer
, par
));
966 w
+= fm
.width(par
.layout().labelsep
);
967 if (end
> 0 && par
.isLineSeparator(end
- 1))
968 w
-= singleWidth(pit
, end
- 1);
969 w
= max(w
, label_end
);
972 return w
+ right_margin
;
976 Dimension
TextMetrics::rowHeight(pit_type
const pit
, pos_type
const first
,
977 pos_type
const end
, bool topBottomSpace
) const
979 Paragraph
const & par
= text_
->getPar(pit
);
980 // get the maximum ascent and the maximum descent
981 double layoutasc
= 0;
982 double layoutdesc
= 0;
983 double const dh
= defaultRowHeight();
985 // ok, let us initialize the maxasc and maxdesc value.
986 // Only the fontsize count. The other properties
987 // are taken from the layoutfont. Nicer on the screen :)
988 Layout
const & layout
= par
.layout();
990 // as max get the first character of this row then it can
991 // increase but not decrease the height. Just some point to
992 // start with so we don't have to do the assignment below too
994 Buffer
const & buffer
= bv_
->buffer();
995 Font font
= displayFont(pit
, first
);
996 FontSize
const tmpsize
= font
.fontInfo().size();
997 font
.fontInfo() = text_
->layoutFont(buffer
, pit
);
998 FontSize
const size
= font
.fontInfo().size();
999 font
.fontInfo().setSize(tmpsize
);
1001 FontInfo labelfont
= text_
->labelFont(buffer
, par
);
1003 FontMetrics
const & labelfont_metrics
= theFontMetrics(labelfont
);
1004 FontMetrics
const & fontmetrics
= theFontMetrics(font
);
1006 // these are minimum values
1007 double const spacing_val
= layout
.spacing
.getValue()
1008 * text_
->spacing(buffer
, par
);
1009 //lyxerr << "spacing_val = " << spacing_val << endl;
1010 int maxasc
= int(fontmetrics
.maxAscent() * spacing_val
);
1011 int maxdesc
= int(fontmetrics
.maxDescent() * spacing_val
);
1013 // insets may be taller
1014 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
1015 InsetList::const_iterator ii
= par
.insetList().begin();
1016 InsetList::const_iterator iend
= par
.insetList().end();
1017 for ( ; ii
!= iend
; ++ii
) {
1018 if (ii
->pos
>= first
&& ii
->pos
< end
) {
1019 Dimension
const & dim
= pm
.insetDimension(ii
->inset
);
1020 maxasc
= max(maxasc
, dim
.ascent());
1021 maxdesc
= max(maxdesc
, dim
.descent());
1025 // Check if any custom fonts are larger (Asger)
1026 // This is not completely correct, but we can live with the small,
1027 // cosmetic error for now.
1031 par
.highestFontInRange(first
, end
, size
);
1032 if (maxsize
> font
.fontInfo().size()) {
1033 // use standard paragraph font with the maximal size
1034 FontInfo maxfont
= font
.fontInfo();
1035 maxfont
.setSize(maxsize
);
1036 FontMetrics
const & maxfontmetrics
= theFontMetrics(maxfont
);
1037 maxasc
= max(maxasc
, maxfontmetrics
.maxAscent());
1038 maxdesc
= max(maxdesc
, maxfontmetrics
.maxDescent());
1041 // This is nicer with box insets:
1045 ParagraphList
const & pars
= text_
->paragraphs();
1047 // is it a top line?
1048 if (first
== 0 && topBottomSpace
) {
1049 BufferParams
const & bufparams
= buffer
.params();
1050 // some parskips VERY EASY IMPLEMENTATION
1051 if (bufparams
.paragraph_separation
1052 == BufferParams::ParagraphSkipSeparation
1053 && par
.ownerCode() != ERT_CODE
1054 && par
.ownerCode() != LISTINGS_CODE
1056 && ((layout
.isParagraph() && par
.getDepth() == 0)
1057 || (pars
[pit
- 1].layout().isParagraph()
1058 && 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(buffer
, 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 && isFirstInSequence(pit
, pars
)
1080 && !par
.labelString().empty())
1083 labelfont_metrics
.maxHeight()
1084 * layout
.spacing
.getValue()
1085 * text_
->spacing(buffer
, 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
= depthHook(pit
, pars
, 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
= outerHook(pit
, pars
);
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
= depthHook(cpit
, pars
, 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 while (vc
< end
&& tmpx
<= x
) {
1207 c
= bidi
.vis2log(vc
);
1209 if (body_pos
> 0 && c
== body_pos
- 1) {
1210 FontMetrics
const & fm
= theFontMetrics(
1211 text_
->labelFont(buffer
, par
));
1212 tmpx
+= row
.label_hfill
+ fm
.width(layout
.labelsep
);
1213 if (par
.isLineSeparator(body_pos
- 1))
1214 tmpx
-= singleWidth(pit
, body_pos
- 1);
1217 tmpx
+= singleWidth(pit
, c
);
1218 if (par
.isSeparator(c
) && c
>= body_pos
)
1219 tmpx
+= row
.separator
;
1223 if ((tmpx
+ last_tmpx
) / 2 > x
) {
1228 LASSERT(vc
<= end
, /**/); // This shouldn't happen.
1231 // This (rtl_support test) is not needed, but gives
1232 // some speedup if rtl_support == false
1233 bool const lastrow
= lyxrc
.rtl_support
&& row
.endpos() == par
.size();
1235 // If lastrow is false, we don't need to compute
1236 // the value of rtl.
1237 bool const rtl
= lastrow
? text_
->isRTL(buffer
, par
) : false;
1239 ((rtl
&& left_side
&& vc
== row
.pos() && x
< tmpx
- 5) ||
1240 (!rtl
&& !left_side
&& vc
== end
&& x
> tmpx
+ 5))) {
1241 if (!par
.isNewline(end
- 1))
1243 } else if (vc
== row
.pos()) {
1244 c
= bidi
.vis2log(vc
);
1245 if (bidi
.level(c
) % 2 == 1)
1248 c
= bidi
.vis2log(vc
- 1);
1249 bool const rtl
= (bidi
.level(c
) % 2 == 1);
1250 if (left_side
== rtl
) {
1252 boundary
= isRTLBoundary(pit
, c
);
1256 // I believe this code is not needed anymore (Jug 20050717)
1258 // The following code is necessary because the cursor position past
1259 // the last char in a row is logically equivalent to that before
1260 // the first char in the next row. That's why insets causing row
1261 // divisions -- Newline and display-style insets -- must be treated
1262 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1263 // Newline inset, air gap below:
1264 if (row
.pos() < end
&& c
>= end
&& par
.isNewline(end
- 1)) {
1265 if (bidi
.level(end
-1) % 2 == 0)
1266 tmpx
-= singleWidth(pit
, end
- 1);
1268 tmpx
+= singleWidth(pit
, end
- 1);
1272 // Air gap above display inset:
1273 if (row
.pos() < end
&& c
>= end
&& end
< par
.size()
1274 && par
.isInset(end
) && par
.getInset(end
)->display()) {
1277 // Air gap below display inset:
1278 if (row
.pos() < end
&& c
>= end
&& par
.isInset(end
- 1)
1279 && par
.getInset(end
- 1)->display()) {
1285 pos_type
const col
= c
- row
.pos();
1287 if (!c
|| end
== par
.size())
1290 if (c
==end
&& !par
.isLineSeparator(c
-1) && !par
.isNewline(c
-1)) {
1295 return min(col
, end
- 1 - row
.pos());
1299 pos_type
TextMetrics::x2pos(pit_type pit
, int row
, int x
) const
1301 // We play safe and use parMetrics(pit) to make sure the
1302 // ParagraphMetrics will be redone and OK to use if needed.
1303 // Otherwise we would use an empty ParagraphMetrics in
1304 // upDownInText() while in selection mode.
1305 ParagraphMetrics
const & pm
= parMetrics(pit
);
1307 LASSERT(row
< int(pm
.rows().size()), /**/);
1309 Row
const & r
= pm
.rows()[row
];
1310 return r
.pos() + getColumnNearX(pit
, r
, x
, bound
);
1314 void TextMetrics::newParMetricsDown()
1316 pair
<pit_type
, ParagraphMetrics
> const & last
= *par_metrics_
.rbegin();
1317 pit_type
const pit
= last
.first
+ 1;
1318 if (pit
== int(text_
->paragraphs().size()))
1321 // do it and update its position.
1323 par_metrics_
[pit
].setPosition(last
.second
.position()
1324 + last
.second
.descent() + par_metrics_
[pit
].ascent());
1328 void TextMetrics::newParMetricsUp()
1330 pair
<pit_type
, ParagraphMetrics
> const & first
= *par_metrics_
.begin();
1331 if (first
.first
== 0)
1334 pit_type
const pit
= first
.first
- 1;
1335 // do it and update its position.
1337 par_metrics_
[pit
].setPosition(first
.second
.position()
1338 - first
.second
.ascent() - par_metrics_
[pit
].descent());
1341 // y is screen coordinate
1342 pit_type
TextMetrics::getPitNearY(int y
)
1344 LASSERT(!text_
->paragraphs().empty(), return -1);
1345 LASSERT(!par_metrics_
.empty(), return -1);
1346 LYXERR(Debug::DEBUG
, "y: " << y
<< " cache size: " << par_metrics_
.size());
1348 // look for highest numbered paragraph with y coordinate less than given y
1351 ParMetricsCache::const_iterator it
= par_metrics_
.begin();
1352 ParMetricsCache::const_iterator et
= par_metrics_
.end();
1353 ParMetricsCache::const_iterator last
= et
; last
--;
1355 ParagraphMetrics
const & pm
= it
->second
;
1357 if (y
< it
->second
.position() - int(pm
.ascent())) {
1358 // We are looking for a position that is before the first paragraph in
1359 // the cache (which is in priciple off-screen, that is before the
1362 // We are already at the first paragraph in the inset.
1364 // OK, this is the paragraph we are looking for.
1365 pit
= it
->first
- 1;
1370 ParagraphMetrics
const & pm_last
= par_metrics_
[last
->first
];
1372 if (y
>= last
->second
.position() + int(pm_last
.descent())) {
1373 // We are looking for a position that is after the last paragraph in
1374 // the cache (which is in priciple off-screen), that is before the
1376 pit
= last
->first
+ 1;
1377 if (pit
== int(text_
->paragraphs().size()))
1378 // We are already at the last paragraph in the inset.
1380 // OK, this is the paragraph we are looking for.
1381 newParMetricsDown();
1385 for (; it
!= et
; ++it
) {
1386 LYXERR(Debug::DEBUG
, "examining: pit: " << it
->first
1387 << " y: " << it
->second
.position());
1389 ParagraphMetrics
const & pm
= par_metrics_
[it
->first
];
1391 if (it
->first
>= pit
&& int(it
->second
.position()) - int(pm
.ascent()) <= y
) {
1393 yy
= it
->second
.position();
1397 LYXERR(Debug::DEBUG
, "found best y: " << yy
<< " for pit: " << pit
);
1403 Row
const & TextMetrics::getPitAndRowNearY(int y
, pit_type
& pit
,
1404 bool assert_in_view
, bool up
)
1406 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
1408 int yy
= pm
.position() - pm
.ascent();
1409 LASSERT(!pm
.rows().empty(), /**/);
1410 RowList::const_iterator rit
= pm
.rows().begin();
1411 RowList::const_iterator rlast
= pm
.rows().end();
1413 for (; rit
!= rlast
; yy
+= rit
->height(), ++rit
)
1414 if (yy
+ rit
->height() > y
)
1417 if (assert_in_view
&& yy
+ rit
->height() != y
) {
1419 if (rit
!= pm
.rows().begin())
1421 else if (pit
!= 0) {
1424 ParagraphMetrics
const & pm2
= par_metrics_
[pit
];
1425 rit
= pm2
.rows().end();
1431 else if (pit
!= int(par_metrics_
.size())) {
1433 newParMetricsDown();
1434 ParagraphMetrics
const & pm2
= par_metrics_
[pit
];
1435 rit
= pm2
.rows().begin();
1443 // x,y are absolute screen coordinates
1444 // sets cursor recursively descending into nested editable insets
1445 Inset
* TextMetrics::editXY(Cursor
& cur
, int x
, int y
,
1446 bool assert_in_view
, bool up
)
1448 if (lyxerr
.debugging(Debug::WORKAREA
)) {
1449 LYXERR0("TextMetrics::editXY(cur, " << x
<< ", " << y
<< ")");
1450 cur
.bv().coordCache().dump();
1452 pit_type pit
= getPitNearY(y
);
1453 LASSERT(pit
!= -1, return 0);
1455 Row
const & row
= getPitAndRowNearY(y
, pit
, assert_in_view
, up
);
1458 int xx
= x
; // is modified by getColumnNearX
1459 pos_type
const pos
= row
.pos()
1460 + getColumnNearX(pit
, row
, xx
, bound
);
1463 cur
.boundary(bound
);
1466 // try to descend into nested insets
1467 Inset
* inset
= checkInsetHit(x
, y
);
1468 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1470 // Either we deconst editXY or better we move current_font
1471 // and real_current_font to Cursor
1472 // FIXME: what is needed now that current_font and real_current_font
1474 cur
.setCurrentFont();
1478 ParagraphList
const & pars
= text_
->paragraphs();
1479 Inset
const * insetBefore
= pos
? pars
[pit
].getInset(pos
- 1) : 0;
1480 //Inset * insetBehind = pars[pit].getInset(pos);
1482 // This should be just before or just behind the
1483 // cursor position set above.
1484 LASSERT((pos
!= 0 && inset
== insetBefore
)
1485 || inset
== pars
[pit
].getInset(pos
), /**/);
1487 // Make sure the cursor points to the position before
1489 if (inset
== insetBefore
) {
1491 cur
.boundary(false);
1494 // Try to descend recursively inside the inset.
1495 inset
= inset
->editXY(cur
, x
, y
);
1497 if (cur
.top().text() == text_
)
1498 cur
.setCurrentFont();
1503 void TextMetrics::setCursorFromCoordinates(Cursor
& cur
, int const x
, int const y
)
1505 LASSERT(text_
== cur
.text(), /**/);
1506 pit_type pit
= getPitNearY(y
);
1507 LASSERT(pit
!= -1, return);
1509 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
1511 int yy
= pm
.position() - pm
.ascent();
1512 LYXERR(Debug::DEBUG
, "x: " << x
<< " y: " << y
<<
1513 " pit: " << pit
<< " yy: " << yy
);
1516 LASSERT(pm
.rows().size(), /**/);
1517 for (; r
< int(pm
.rows().size()) - 1; ++r
) {
1518 Row
const & row
= pm
.rows()[r
];
1519 if (int(yy
+ row
.height()) > y
)
1524 Row
const & row
= pm
.rows()[r
];
1526 LYXERR(Debug::DEBUG
, "row " << r
<< " from pos: " << row
.pos());
1530 pos_type
const pos
= row
.pos() + getColumnNearX(pit
, row
, xx
, bound
);
1532 LYXERR(Debug::DEBUG
, "setting cursor pit: " << pit
<< " pos: " << pos
);
1534 text_
->setCursor(cur
, pit
, pos
, true, bound
);
1535 // remember new position.
1540 //takes screen x,y coordinates
1541 Inset
* TextMetrics::checkInsetHit(int x
, int y
)
1543 pit_type pit
= getPitNearY(y
);
1544 LASSERT(pit
!= -1, return 0);
1546 Paragraph
const & par
= text_
->paragraphs()[pit
];
1547 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
1549 LYXERR(Debug::DEBUG
, "x: " << x
<< " y: " << y
<< " pit: " << pit
);
1551 InsetList::const_iterator iit
= par
.insetList().begin();
1552 InsetList::const_iterator iend
= par
.insetList().end();
1553 for (; iit
!= iend
; ++iit
) {
1554 Inset
* inset
= iit
->inset
;
1556 LYXERR(Debug::DEBUG
, "examining inset " << inset
);
1558 if (!bv_
->coordCache().getInsets().has(inset
)) {
1559 LYXERR(Debug::DEBUG
, "inset has no cached position");
1563 Dimension
const & dim
= pm
.insetDimension(inset
);
1564 Point p
= bv_
->coordCache().getInsets().xy(inset
);
1566 LYXERR(Debug::DEBUG
, "xo: " << p
.x_
<< "..." << p
.x_
+ dim
.wid
1567 << " yo: " << p
.y_
- dim
.asc
<< "..." << p
.y_
+ dim
.des
);
1570 && x
<= p
.x_
+ dim
.wid
1571 && y
>= p
.y_
- dim
.asc
1572 && y
<= p
.y_
+ dim
.des
) {
1573 LYXERR(Debug::DEBUG
, "Hit inset: " << inset
);
1578 LYXERR(Debug::DEBUG
, "No inset hit. ");
1583 int TextMetrics::cursorX(CursorSlice
const & sl
,
1584 bool boundary
) const
1586 LASSERT(sl
.text() == text_
, /**/);
1587 pit_type
const pit
= sl
.pit();
1588 Paragraph
const & par
= text_
->paragraphs()[pit
];
1589 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
1590 if (pm
.rows().empty())
1593 pos_type ppos
= sl
.pos();
1594 // Correct position in front of big insets
1595 bool const boundary_correction
= ppos
!= 0 && boundary
;
1596 if (boundary_correction
)
1599 Row
const & row
= pm
.getRow(sl
.pos(), boundary
);
1601 pos_type cursor_vpos
= 0;
1603 Buffer
const & buffer
= bv_
->buffer();
1606 bidi
.computeTables(par
, buffer
, row
);
1608 pos_type
const row_pos
= row
.pos();
1609 pos_type
const end
= row
.endpos();
1610 // Spaces at logical line breaks in bidi text must be skipped during
1611 // cursor positioning. However, they may appear visually in the middle
1612 // of a row; they must be skipped, wherever they are...
1613 // * logically "abc_[HEBREW_\nHEBREW]"
1614 // * visually "abc_[_WERBEH\nWERBEH]"
1615 pos_type skipped_sep_vpos
= -1;
1618 cursor_vpos
= row_pos
;
1619 else if (ppos
>= end
)
1620 cursor_vpos
= text_
->isRTL(buffer
, par
) ? row_pos
: end
;
1621 else if (ppos
> row_pos
&& ppos
>= end
)
1622 // Place cursor after char at (logical) position pos - 1
1623 cursor_vpos
= (bidi
.level(ppos
- 1) % 2 == 0)
1624 ? bidi
.log2vis(ppos
- 1) + 1 : bidi
.log2vis(ppos
- 1);
1626 // Place cursor before char at (logical) position ppos
1627 cursor_vpos
= (bidi
.level(ppos
) % 2 == 0)
1628 ? bidi
.log2vis(ppos
) : bidi
.log2vis(ppos
) + 1;
1630 pos_type body_pos
= par
.beginOfBody();
1632 (body_pos
> end
|| !par
.isLineSeparator(body_pos
- 1)))
1635 // check for possible inline completion in this row
1636 DocIterator
const & inlineCompletionPos
= bv_
->inlineCompletionPos();
1637 pos_type inlineCompletionVPos
= -1;
1638 if (inlineCompletionPos
.inTexted()
1639 && inlineCompletionPos
.text() == text_
1640 && inlineCompletionPos
.pit() == pit
1641 && inlineCompletionPos
.pos() - 1 >= row_pos
1642 && inlineCompletionPos
.pos() - 1 < end
) {
1643 // draw logically behind the previous character
1644 inlineCompletionVPos
= bidi
.log2vis(inlineCompletionPos
.pos() - 1);
1647 // Use font span to speed things up, see below
1651 // If the last logical character is a separator, skip it, unless
1652 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1653 if (end
> 0 && end
< par
.size() && par
.isSeparator(end
- 1))
1654 skipped_sep_vpos
= bidi
.log2vis(end
- 1);
1656 // Inline completion RTL special case row_pos == cursor_pos:
1657 // "__|b" => cursor_pos is right of __
1658 if (row_pos
== inlineCompletionVPos
&& row_pos
== cursor_vpos
) {
1659 font
= displayFont(pit
, row_pos
+ 1);
1660 docstring
const & completion
= bv_
->inlineCompletion();
1661 if (font
.isRightToLeft() && completion
.length() > 0)
1662 x
+= theFontMetrics(font
.fontInfo()).width(completion
);
1665 for (pos_type vpos
= row_pos
; vpos
< cursor_vpos
; ++vpos
) {
1666 // Skip the separator which is at the logical end of the row
1667 if (vpos
== skipped_sep_vpos
)
1669 pos_type pos
= bidi
.vis2log(vpos
);
1670 if (body_pos
> 0 && pos
== body_pos
- 1) {
1671 FontMetrics
const & labelfm
= theFontMetrics(
1672 text_
->labelFont(buffer
, par
));
1673 x
+= row
.label_hfill
+ labelfm
.width(par
.layout().labelsep
);
1674 if (par
.isLineSeparator(body_pos
- 1))
1675 x
-= singleWidth(pit
, body_pos
- 1);
1678 // Use font span to speed things up, see above
1679 if (pos
< font_span
.first
|| pos
> font_span
.last
) {
1680 font_span
= par
.fontSpan(pos
);
1681 font
= displayFont(pit
, pos
);
1684 x
+= pm
.singleWidth(pos
, font
);
1686 // Inline completion RTL case:
1687 // "a__|b", __ of b => non-boundary a-pos is right of __
1688 if (vpos
+ 1 == inlineCompletionVPos
1689 && (vpos
+ 1 < cursor_vpos
|| !boundary_correction
)) {
1690 font
= displayFont(pit
, vpos
+ 1);
1691 docstring
const & completion
= bv_
->inlineCompletion();
1692 if (font
.isRightToLeft() && completion
.length() > 0)
1693 x
+= theFontMetrics(font
.fontInfo()).width(completion
);
1696 // Inline completion LTR case:
1697 // "b|__a", __ of b => non-boundary a-pos is in front of __
1698 if (vpos
== inlineCompletionVPos
1699 && (vpos
+ 1 < cursor_vpos
|| boundary_correction
)) {
1700 font
= displayFont(pit
, vpos
);
1701 docstring
const & completion
= bv_
->inlineCompletion();
1702 if (!font
.isRightToLeft() && completion
.length() > 0)
1703 x
+= theFontMetrics(font
.fontInfo()).width(completion
);
1706 if (par
.isSeparator(pos
) && pos
>= body_pos
)
1710 // see correction above
1711 if (boundary_correction
) {
1712 if (isRTL(sl
, boundary
))
1713 x
-= singleWidth(pit
, ppos
);
1715 x
+= singleWidth(pit
, ppos
);
1722 int TextMetrics::cursorY(CursorSlice
const & sl
, bool boundary
) const
1724 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1725 ParagraphMetrics
const & pm
= par_metrics_
[sl
.pit()];
1726 if (pm
.rows().empty())
1730 h
-= par_metrics_
[0].rows()[0].ascent();
1731 for (pit_type pit
= 0; pit
< sl
.pit(); ++pit
) {
1732 h
+= par_metrics_
[pit
].height();
1735 if (pos
&& boundary
)
1737 size_t const rend
= pm
.pos2row(pos
);
1738 for (size_t rit
= 0; rit
!= rend
; ++rit
)
1739 h
+= pm
.rows()[rit
].height();
1740 h
+= pm
.rows()[rend
].ascent();
1745 // the cursor set functions have a special mechanism. When they
1746 // realize you left an empty paragraph, they will delete it.
1748 bool TextMetrics::cursorHome(Cursor
& cur
)
1750 LASSERT(text_
== cur
.text(), /**/);
1751 ParagraphMetrics
const & pm
= par_metrics_
[cur
.pit()];
1752 Row
const & row
= pm
.getRow(cur
.pos(),cur
.boundary());
1753 return text_
->setCursor(cur
, cur
.pit(), row
.pos());
1757 bool TextMetrics::cursorEnd(Cursor
& cur
)
1759 LASSERT(text_
== cur
.text(), /**/);
1760 // if not on the last row of the par, put the cursor before
1761 // the final space exept if I have a spanning inset or one string
1762 // is so long that we force a break.
1763 pos_type end
= cur
.textRow().endpos();
1765 // empty text, end-1 is no valid position
1767 bool boundary
= false;
1768 if (end
!= cur
.lastpos()) {
1769 if (!cur
.paragraph().isLineSeparator(end
-1)
1770 && !cur
.paragraph().isNewline(end
-1))
1775 return text_
->setCursor(cur
, cur
.pit(), end
, true, boundary
);
1779 void TextMetrics::deleteLineForward(Cursor
& cur
)
1781 LASSERT(text_
== cur
.text(), /**/);
1782 if (cur
.lastpos() == 0) {
1783 // Paragraph is empty, so we just go forward
1784 text_
->cursorForward(cur
);
1787 cur
.setSelection(true); // to avoid deletion
1790 // What is this test for ??? (JMarc)
1791 if (!cur
.selection())
1792 text_
->deleteWordForward(cur
);
1794 cap::cutSelection(cur
, true, false);
1795 cur
.checkBufferStructure();
1800 bool TextMetrics::isLastRow(pit_type pit
, Row
const & row
) const
1802 ParagraphList
const & pars
= text_
->paragraphs();
1803 return row
.endpos() >= pars
[pit
].size()
1804 && pit
+ 1 == pit_type(pars
.size());
1808 bool TextMetrics::isFirstRow(pit_type pit
, Row
const & row
) const
1810 return row
.pos() == 0 && pit
== 0;
1814 int TextMetrics::leftMargin(int max_width
, pit_type pit
) const
1816 LASSERT(pit
>= 0, /**/);
1817 LASSERT(pit
< int(text_
->paragraphs().size()), /**/);
1818 return leftMargin(max_width
, pit
, text_
->paragraphs()[pit
].size());
1822 int TextMetrics::leftMargin(int max_width
,
1823 pit_type
const pit
, pos_type
const pos
) const
1825 ParagraphList
const & pars
= text_
->paragraphs();
1827 LASSERT(pit
>= 0, /**/);
1828 LASSERT(pit
< int(pars
.size()), /**/);
1829 Paragraph
const & par
= pars
[pit
];
1830 LASSERT(pos
>= 0, /**/);
1831 LASSERT(pos
<= par
.size(), /**/);
1832 Buffer
const & buffer
= bv_
->buffer();
1833 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1834 DocumentClass
const & tclass
= buffer
.params().documentClass();
1835 Layout
const & layout
= par
.layout();
1837 docstring parindent
= layout
.parindent
;
1841 if (text_
->isMainText(buffer
))
1842 l_margin
+= bv_
->leftMargin();
1844 l_margin
+= theFontMetrics(buffer
.params().getFont()).signedWidth(
1845 tclass
.leftmargin());
1847 if (par
.getDepth() != 0) {
1848 // find the next level paragraph
1849 pit_type newpar
= outerHook(pit
, pars
);
1850 if (newpar
!= pit_type(pars
.size())) {
1851 if (pars
[newpar
].layout().isEnvironment()) {
1852 l_margin
= leftMargin(max_width
, newpar
);
1854 if (tclass
.isDefaultLayout(par
.layout())
1855 || tclass
.isPlainLayout(par
.layout())) {
1856 if (pars
[newpar
].params().noindent())
1859 parindent
= pars
[newpar
].layout().parindent
;
1864 // This happens after sections in standard classes. The 1.3.x
1865 // code compared depths too, but it does not seem necessary
1867 if (tclass
.isDefaultLayout(par
.layout())
1868 && pit
> 0 && pars
[pit
- 1].layout().nextnoindent
)
1871 FontInfo
const labelfont
= text_
->labelFont(buffer
, par
);
1872 FontMetrics
const & labelfont_metrics
= theFontMetrics(labelfont
);
1874 switch (layout
.margintype
) {
1875 case MARGIN_DYNAMIC
:
1876 if (!layout
.leftmargin
.empty()) {
1877 l_margin
+= theFontMetrics(buffer
.params().getFont()).signedWidth(
1880 if (!par
.labelString().empty()) {
1881 l_margin
+= labelfont_metrics
.signedWidth(layout
.labelindent
);
1882 l_margin
+= labelfont_metrics
.width(par
.labelString());
1883 l_margin
+= labelfont_metrics
.width(layout
.labelsep
);
1887 case MARGIN_MANUAL
: {
1888 l_margin
+= labelfont_metrics
.signedWidth(layout
.labelindent
);
1889 // The width of an empty par, even with manual label, should be 0
1890 if (!par
.empty() && pos
>= par
.beginOfBody()) {
1891 if (!par
.getLabelWidthString().empty()) {
1892 docstring labstr
= par
.getLabelWidthString();
1893 l_margin
+= labelfont_metrics
.width(labstr
);
1894 l_margin
+= labelfont_metrics
.width(layout
.labelsep
);
1900 case MARGIN_STATIC
: {
1901 l_margin
+= theFontMetrics(buffer
.params().getFont()).
1902 signedWidth(layout
.leftmargin
) * 4 / (par
.getDepth() + 4);
1906 case MARGIN_FIRST_DYNAMIC
:
1907 if (layout
.labeltype
== LABEL_MANUAL
) {
1908 // if we are at position 0, we are never in the body
1909 if (pos
> 0 && pos
>= par
.beginOfBody())
1910 l_margin
+= labelfont_metrics
.signedWidth(layout
.leftmargin
);
1912 l_margin
+= labelfont_metrics
.signedWidth(layout
.labelindent
);
1914 // Special case to fix problems with
1916 || (layout
.labeltype
== LABEL_STATIC
1917 && layout
.latextype
== LATEX_ENVIRONMENT
1918 && !isFirstInSequence(pit
, pars
))) {
1919 l_margin
+= labelfont_metrics
.signedWidth(layout
.leftmargin
);
1920 } else if (layout
.labeltype
!= LABEL_TOP_ENVIRONMENT
1921 && layout
.labeltype
!= LABEL_BIBLIO
1922 && layout
.labeltype
!=
1923 LABEL_CENTERED_TOP_ENVIRONMENT
) {
1924 l_margin
+= labelfont_metrics
.signedWidth(layout
.labelindent
);
1925 l_margin
+= labelfont_metrics
.width(layout
.labelsep
);
1926 l_margin
+= labelfont_metrics
.width(par
.labelString());
1930 case MARGIN_RIGHT_ADDRESS_BOX
: {
1932 // ok, a terrible hack. The left margin depends on the widest
1933 // row in this paragraph.
1934 RowList::iterator rit
= par
.rows().begin();
1935 RowList::iterator end
= par
.rows().end();
1936 // FIXME: This is wrong.
1937 int minfill
= max_width
;
1938 for ( ; rit
!= end
; ++rit
)
1939 if (rit
->fill() < minfill
)
1940 minfill
= rit
->fill();
1941 l_margin
+= theFontMetrics(params
.getFont()).signedWidth(layout
.leftmargin
);
1942 l_margin
+= minfill
;
1944 // also wrong, but much shorter.
1945 l_margin
+= max_width
/ 2;
1950 if (!par
.params().leftIndent().zero())
1951 l_margin
+= par
.params().leftIndent().inPixels(max_width
);
1955 if (par
.params().align() == LYX_ALIGN_LAYOUT
)
1956 align
= layout
.align
;
1958 align
= par
.params().align();
1960 // set the correct parindent
1962 && (layout
.labeltype
== LABEL_NO_LABEL
1963 || layout
.labeltype
== LABEL_TOP_ENVIRONMENT
1964 || layout
.labeltype
== LABEL_CENTERED_TOP_ENVIRONMENT
1965 || (layout
.labeltype
== LABEL_STATIC
1966 && layout
.latextype
== LATEX_ENVIRONMENT
1967 && !isFirstInSequence(pit
, pars
)))
1968 && align
== LYX_ALIGN_BLOCK
1969 && !par
.params().noindent()
1970 // in some insets, paragraphs are never indented
1971 && !par
.inInset().neverIndent()
1972 // display style insets are always centered, omit indentation
1975 && par
.getInset(pos
)->display())
1976 && (!(tclass
.isDefaultLayout(par
.layout())
1977 || tclass
.isPlainLayout(par
.layout()))
1978 || buffer
.params().paragraph_separation
== BufferParams::ParagraphIndentSeparation
)
1981 // use the parindent of the layout when the default indentation is used
1982 // otherwise use the indentation set in the document settings
1983 if (buffer
.params().getIndentation().asLyXCommand() == "default")
1984 l_margin
+= theFontMetrics(buffer
.params().getFont()).signedWidth(
1987 l_margin
+= buffer
.params().getIndentation().inPixels(*bv_
);
1994 int TextMetrics::singleWidth(pit_type pit
, pos_type pos
) const
1996 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
1998 return pm
.singleWidth(pos
, displayFont(pit
, pos
));
2002 void TextMetrics::draw(PainterInfo
& pi
, int x
, int y
) const
2004 if (par_metrics_
.empty())
2010 ParMetricsCache::iterator it
= par_metrics_
.begin();
2011 ParMetricsCache::iterator
const pm_end
= par_metrics_
.end();
2012 y
-= it
->second
.ascent();
2013 for (; it
!= pm_end
; ++it
) {
2014 ParagraphMetrics
const & pmi
= it
->second
;
2016 pit_type
const pit
= it
->first
;
2017 // Save the paragraph position in the cache.
2018 it
->second
.setPosition(y
);
2019 drawParagraph(pi
, pit
, x
, y
);
2025 void TextMetrics::drawParagraph(PainterInfo
& pi
, pit_type pit
, int x
, int y
) const
2027 BufferParams
const & bparams
= bv_
->buffer().params();
2028 ParagraphMetrics
const & pm
= par_metrics_
[pit
];
2029 if (pm
.rows().empty())
2033 bool const original_drawing_state
= pi
.pain
.isDrawingEnabled();
2034 int const ww
= bv_
->workHeight();
2035 size_t const nrows
= pm
.rows().size();
2037 Cursor
const & cur
= bv_
->cursor();
2038 DocIterator sel_beg
= cur
.selectionBegin();
2039 DocIterator sel_end
= cur
.selectionEnd();
2040 bool selection
= cur
.selection()
2041 // This is our text.
2042 && cur
.text() == text_
2043 // if the anchor is outside, this is not our selection
2044 && cur
.anchor().text() == text_
2045 && pit
>= sel_beg
.pit() && pit
<= sel_end
.pit();
2047 // We store the begin and end pos of the selection relative to this par
2048 DocIterator sel_beg_par
= cur
.selectionBegin();
2049 DocIterator sel_end_par
= cur
.selectionEnd();
2051 // We care only about visible selection.
2053 if (pit
!= sel_beg
.pit()) {
2054 sel_beg_par
.pit() = pit
;
2055 sel_beg_par
.pos() = 0;
2057 if (pit
!= sel_end
.pit()) {
2058 sel_end_par
.pit() = pit
;
2059 sel_end_par
.pos() = sel_end_par
.lastpos();
2063 for (size_t i
= 0; i
!= nrows
; ++i
) {
2065 Row
const & row
= pm
.rows()[i
];
2069 bool const inside
= (y
+ row
.descent() >= 0
2070 && y
- row
.ascent() < ww
);
2071 // It is not needed to draw on screen if we are not inside.
2072 pi
.pain
.setDrawingEnabled(inside
&& original_drawing_state
);
2073 RowPainter
rp(pi
, *text_
, pit
, row
, bidi
, x
, y
);
2076 row
.setSelectionAndMargins(sel_beg_par
, sel_end_par
);
2078 row
.setSelection(-1, -1);
2080 // The row knows nothing about the paragraph, so we have to check
2081 // whether this row is the first or last and update the margins.
2082 if (row
.selection()) {
2083 if (row
.sel_beg
== 0)
2084 row
.begin_margin_sel
= sel_beg
.pit() < pit
;
2085 if (row
.sel_end
== sel_end_par
.lastpos())
2086 row
.end_margin_sel
= sel_end
.pit() > pit
;
2089 // Row signature; has row changed since last paint?
2090 row
.setCrc(pm
.computeRowSignature(row
, bparams
));
2091 bool row_has_changed
= row
.changed();
2093 // Don't paint the row if a full repaint has not been requested
2094 // and if it has not changed.
2095 if (!pi
.full_repaint
&& !row_has_changed
) {
2096 // Paint only the insets if the text itself is
2098 rp
.paintOnlyInsets();
2103 // Clear background of this row if paragraph background was not
2104 // already cleared because of a full repaint.
2105 if (!pi
.full_repaint
&& row_has_changed
) {
2106 pi
.pain
.fillRectangle(x
, y
- row
.ascent(),
2107 width(), row
.height(), pi
.background_color
);
2110 if (row
.selection())
2111 drawRowSelection(pi
, x
, row
, cur
, pit
);
2113 // Instrumentation for testing row cache (see also
2115 if (lyxerr
.debugging(Debug::PAINTING
) && inside
2116 && (row
.selection() || pi
.full_repaint
|| row_has_changed
)) {
2117 string
const foreword
= text_
->isMainText(bv_
->buffer()) ?
2118 "main text redraw " : "inset text redraw: ";
2119 LYXERR(Debug::PAINTING
, foreword
<< "pit=" << pit
<< " row=" << i
2120 << " row_selection=" << row
.selection()
2121 << " full_repaint=" << pi
.full_repaint
2122 << " row_has_changed=" << row_has_changed
);
2125 // Backup full_repaint status and force full repaint
2126 // for inner insets as the Row has been cleared out.
2127 bool tmp
= pi
.full_repaint
;
2128 pi
.full_repaint
= true;
2131 rp
.paintChangeBar();
2138 // Restore full_repaint status.
2139 pi
.full_repaint
= tmp
;
2141 // Re-enable screen drawing for future use of the painter.
2142 pi
.pain
.setDrawingEnabled(original_drawing_state
);
2144 //LYXERR(Debug::PAINTING, ".");
2148 void TextMetrics::drawRowSelection(PainterInfo
& pi
, int x
, Row
const & row
,
2149 Cursor
const & curs
, pit_type pit
) const
2151 DocIterator beg
= curs
.selectionBegin();
2153 beg
.pos() = row
.sel_beg
;
2155 DocIterator end
= curs
.selectionEnd();
2157 end
.pos() = row
.sel_end
;
2159 bool const begin_boundary
= beg
.pos() >= row
.endpos();
2160 bool const end_boundary
= row
.sel_end
== row
.endpos();
2162 Buffer
& buffer
= bv_
->buffer();
2163 DocIterator cur
= beg
;
2164 cur
.boundary(begin_boundary
);
2165 int x1
= cursorX(beg
.top(), begin_boundary
);
2166 int x2
= cursorX(end
.top(), end_boundary
);
2167 int const y1
= bv_
->getPos(cur
, cur
.boundary()).y_
- row
.ascent();
2168 int const y2
= y1
+ row
.height();
2170 int const rm
= text_
->isMainText(buffer
) ? bv_
->rightMargin() : 0;
2171 int const lm
= text_
->isMainText(buffer
) ? bv_
->leftMargin() : 0;
2174 if (row
.begin_margin_sel
) {
2175 if (text_
->isRTL(buffer
, beg
.paragraph())) {
2176 pi
.pain
.fillRectangle(x
+ x1
, y1
, width() - rm
- x1
, y2
- y1
,
2179 pi
.pain
.fillRectangle(x
+ lm
, y1
, x1
- lm
, y2
- y1
,
2184 if (row
.end_margin_sel
) {
2185 if (text_
->isRTL(buffer
, beg
.paragraph())) {
2186 pi
.pain
.fillRectangle(x
+ lm
, y1
, x2
- lm
, y2
- y1
,
2189 pi
.pain
.fillRectangle(x
+ x2
, y1
, width() - rm
- x2
, y2
- y1
,
2194 // if we are on a boundary from the beginning, it's probably
2195 // a RTL boundary and we jump to the other side directly as this
2196 // segement is 0-size and confuses the logic below
2198 cur
.boundary(false);
2200 // go through row and draw from RTL boundary to RTL boundary
2202 bool drawNow
= false;
2204 // simplified cursorForward code below which does not
2205 // descend into insets and which does not go into the
2206 // next line. Compare the logic with the original cursorForward
2208 // if left of boundary -> just jump to right side, but
2209 // for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
2210 if (cur
.boundary()) {
2211 cur
.boundary(false);
2212 } else if (isRTLBoundary(cur
.pit(), cur
.pos() + 1)) {
2213 // in front of RTL boundary -> Stay on this side of the boundary
2214 // because: ab|cDDEEFFghi -> abc|DDEEFFghi
2223 if (cur
.pos() == row
.endpos())
2228 // the previous segment was just drawn, now the next starts
2229 x1
= cursorX(cur
.top(), cur
.boundary());
2232 if (!(cur
< end
) || drawNow
) {
2233 x2
= cursorX(cur
.top(), cur
.boundary());
2234 pi
.pain
.fillRectangle(x
+ min(x1
,x2
), y1
, abs(x2
- x1
), y2
- y1
,
2237 // reset x1, so it is set again next round (which will be on the
2238 // right side of a boundary or at the selection end)
2245 void TextMetrics::completionPosAndDim(Cursor
const & cur
, int & x
, int & y
,
2246 Dimension
& dim
) const
2248 Cursor
const & bvcur
= cur
.bv().cursor();
2250 // get word in front of cursor
2251 docstring word
= text_
->previousWord(bvcur
.top());
2252 DocIterator wordStart
= bvcur
;
2253 wordStart
.pos() -= word
.length();
2255 // get position on screen of the word start and end
2256 Point lxy
= cur
.bv().getPos(wordStart
, false);
2257 Point rxy
= cur
.bv().getPos(bvcur
, bvcur
.boundary());
2259 // calculate dimensions of the word
2260 dim
= rowHeight(bvcur
.pit(), wordStart
.pos(), bvcur
.pos(), false);
2261 dim
.wid
= abs(rxy
.x_
- lxy
.x_
);
2263 // calculate position of word
2265 x
= min(rxy
.x_
, lxy
.x_
);
2267 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2268 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2271 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2273 // ParagraphMetrics const & pm = par_metrics_[pit];
2274 // Row const & r = pm.rows()[row];
2280 int defaultRowHeight()
2282 return int(theFontMetrics(sane_font
).maxHeight() * 1.2);