lyx_mirror/src/text.C

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/**
* \file text.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Asger Alstrup
* \author Lars Gullik Bj<EFBFBD>nnes
* \author Jean-Marc Lasgouttes
* \author John Levon
* \author Andr<EFBFBD> P<EFBFBD>nitz
* \author Dekel Tsur
* \author J<EFBFBD>rgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "lyxtext.h"
#include "paragraph.h"
#include "gettext.h"
#include "bufferparams.h"
#include "buffer.h"
#include "debug.h"
#include "intl.h"
#include "lyxrc.h"
#include "encoding.h"
#include "frontends/LyXView.h"
#include "frontends/Painter.h"
#include "frontends/font_metrics.h"
#include "frontends/screen.h"
#include "frontends/WorkArea.h"
#include "bufferview_funcs.h"
#include "BufferView.h"
#include "language.h"
#include "ParagraphParameters.h"
#include "undo_funcs.h"
#include "text_funcs.h"
#include "WordLangTuple.h"
#include "paragraph_funcs.h"
#include "rowpainter.h"
#include "lyxrow_funcs.h"
#include "metricsinfo.h"
#include "insets/insettext.h"
#include "support/textutils.h"
#include "support/LAssert.h"
#include "support/lstrings.h"
#include <algorithm>
using namespace lyx::support;
using std::max;
using std::min;
using std::endl;
using std::pair;
using lyx::pos_type;
using lyx::word_location;
using namespace bv_funcs;
/// top, right, bottom pixel margin
extern int const PAPER_MARGIN = 20;
/// margin for changebar
extern int const CHANGEBAR_MARGIN = 10;
/// left margin
extern int const LEFT_MARGIN = PAPER_MARGIN + CHANGEBAR_MARGIN;
int bibitemMaxWidth(BufferView *, LyXFont const &);
BufferView * LyXText::bv()
{
Assert(bv_owner != 0);
return bv_owner;
}
BufferView * LyXText::bv() const
{
Assert(bv_owner != 0);
return bv_owner;
}
void LyXText::updateRowPositions()
{
ParagraphList::iterator pit = ownerParagraphs().begin();
ParagraphList::iterator end = ownerParagraphs().end();
for (height = 0; pit != end; ++pit) {
RowList::iterator rit = pit->rows.begin();
RowList::iterator rend = pit->rows.end();
for ( ; rit != rend ; rit = ++rit) {
rit->y(height);
height += rit->height();
}
}
}
int LyXText::top_y() const
{
return anchor_y_;
}
void LyXText::top_y(int newy)
{
anchor_y_ = newy;
lyxerr[Debug::GUI] << "changing reference to offset: " << anchor_y_ << endl;
}
int LyXText::workWidth() const
{
return inset_owner ? inset_owner->textWidth() : bv()->workWidth();
}
int LyXText::getRealCursorX() const
{
int x = cursor.x();
if (the_locking_inset && (the_locking_inset->getLyXText(bv())!= this))
x = the_locking_inset->getLyXText(bv())->getRealCursorX();
return x;
}
#warning FIXME This function seems to belong outside of LyxText.
unsigned char LyXText::transformChar(unsigned char c, Paragraph const & par,
pos_type pos) const
{
if (!Encodings::is_arabic(c))
if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
return c + (0xb0 - '0');
else
return c;
unsigned char const prev_char = pos > 0 ? par.getChar(pos - 1) : ' ';
unsigned char next_char = ' ';
pos_type const par_size = par.size();
for (pos_type i = pos + 1; i < par_size; ++i) {
unsigned char const par_char = par.getChar(i);
if (!Encodings::IsComposeChar_arabic(par_char)) {
next_char = par_char;
break;
}
}
if (Encodings::is_arabic(next_char)) {
if (Encodings::is_arabic(prev_char) &&
!Encodings::is_arabic_special(prev_char))
return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
else
return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
} else {
if (Encodings::is_arabic(prev_char) &&
!Encodings::is_arabic_special(prev_char))
return Encodings::TransformChar(c, Encodings::FORM_FINAL);
else
return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
}
}
// This is the comments that some of the warnings below refers to.
// There are some issues in this file and I don't think they are
// really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
// this is a problem that has been here almost from day one and that a
// larger userbase with differenct access patters triggers the bad
// behaviour. (segfaults.) What I think happen is: In several places
// we store the paragraph in the current cursor and then moves the
// cursor. This movement of the cursor will delete paragraph at the
// old position if it is now empty. This will make the temporary
// pointer to the old cursor paragraph invalid and dangerous to use.
// And is some cases this will trigger a segfault. I have marked some
// of the cases where this happens with a warning, but I am sure there
// are others in this file and in text2.C. There is also a note in
// Delete() that you should read. In Delete I store the paragraph->id
// instead of a pointer to the paragraph. I am pretty sure this faulty
// use of temporary pointers to paragraphs that might have gotten
// invalidated (through a cursor movement) before they are used, are
// the cause of the strange crashes we get reported often.
//
// It is very tiresom to change this code, especially when it is as
// hard to read as it is. Help to fix all the cases where this is done
// would be greately appreciated.
//
// Lgb
int LyXText::singleWidth(ParagraphList::iterator pit, pos_type pos) const
{
if (pos >= pit->size())
return 0;
char const c = pit->getChar(pos);
LyXFont const & font = getFont(pit, pos);
return singleWidth(pit, pos, c, font);
}
int LyXText::singleWidth(ParagraphList::iterator pit,
pos_type pos, char c, LyXFont const & font) const
{
if (pos >= pit->size()) {
lyxerr << "in singleWidth(), pos: " << pos << endl;
Assert(false);
return 0;
}
// The most common case is handled first (Asger)
if (IsPrintable(c)) {
if (font.language()->RightToLeft()) {
if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
lyxrc.font_norm_type == LyXRC::ISO_10646_1)
&& font.language()->lang() == "arabic") {
if (Encodings::IsComposeChar_arabic(c))
return 0;
else
c = transformChar(c, *pit, pos);
} else if (font.language()->lang() == "hebrew" &&
Encodings::IsComposeChar_hebrew(c))
return 0;
}
return font_metrics::width(c, font);
}
if (c == Paragraph::META_INSET) {
InsetOld * tmpinset = pit->getInset(pos);
Assert(tmpinset);
if (tmpinset->lyxCode() == InsetOld::HFILL_CODE) {
// Because of the representation as vertical lines
return 3;
}
return tmpinset->width();
}
if (IsSeparatorChar(c))
c = ' ';
return font_metrics::width(c, font);
}
lyx::pos_type LyXText::log2vis(lyx::pos_type pos) const
{
if (bidi_start == -1)
return pos;
else
return log2vis_list[pos - bidi_start];
}
lyx::pos_type LyXText::vis2log(lyx::pos_type pos) const
{
if (bidi_start == -1)
return pos;
else
return vis2log_list[pos - bidi_start];
}
lyx::pos_type LyXText::bidi_level(lyx::pos_type pos) const
{
if (bidi_start == -1)
return 0;
else
return bidi_levels[pos - bidi_start];
}
bool LyXText::bidi_InRange(lyx::pos_type pos) const
{
return bidi_start == -1 ||
(bidi_start <= pos && pos <= bidi_end);
}
void LyXText::computeBidiTables(ParagraphList::iterator pit,
Buffer const * buf, RowList::iterator row) const
{
bidi_same_direction = true;
if (!lyxrc.rtl_support) {
bidi_start = -1;
return;
}
InsetOld * inset = pit->inInset();
if (inset && inset->owner() &&
inset->owner()->lyxCode() == InsetOld::ERT_CODE) {
bidi_start = -1;
return;
}
bidi_start = row->pos();
bidi_end = lastPrintablePos(*pit, row);
if (bidi_start > bidi_end) {
bidi_start = -1;
return;
}
if (bidi_end + 2 - bidi_start >
static_cast<pos_type>(log2vis_list.size())) {
pos_type new_size =
(bidi_end + 2 - bidi_start < 500) ?
500 : 2 * (bidi_end + 2 - bidi_start);
log2vis_list.resize(new_size);
vis2log_list.resize(new_size);
bidi_levels.resize(new_size);
}
vis2log_list[bidi_end + 1 - bidi_start] = -1;
log2vis_list[bidi_end + 1 - bidi_start] = -1;
pos_type stack[2];
bool const rtl_par =
pit->isRightToLeftPar(buf->params);
int level = 0;
bool rtl = false;
bool rtl0 = false;
pos_type const body_pos = pit->beginningOfBody();
for (pos_type lpos = bidi_start; lpos <= bidi_end; ++lpos) {
bool is_space = pit->isLineSeparator(lpos);
pos_type const pos =
(is_space && lpos + 1 <= bidi_end &&
!pit->isLineSeparator(lpos + 1) &&
!pit->isNewline(lpos + 1))
? lpos + 1 : lpos;
LyXFont font = pit->getFontSettings(buf->params, pos);
if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
font.number() == LyXFont::ON &&
pit->getFontSettings(buf->params, lpos - 1).number()
== LyXFont::ON) {
font = pit->getFontSettings(buf->params, lpos);
is_space = false;
}
bool new_rtl = font.isVisibleRightToLeft();
bool new_rtl0 = font.isRightToLeft();
int new_level;
if (lpos == body_pos - 1
&& row->pos() < body_pos - 1
&& is_space) {
new_level = (rtl_par) ? 1 : 0;
new_rtl = new_rtl0 = rtl_par;
} else if (new_rtl0)
new_level = (new_rtl) ? 1 : 2;
else
new_level = (rtl_par) ? 2 : 0;
if (is_space && new_level >= level) {
new_level = level;
new_rtl = rtl;
new_rtl0 = rtl0;
}
int new_level2 = new_level;
if (level == new_level && rtl0 != new_rtl0) {
--new_level2;
log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
} else if (level < new_level) {
log2vis_list[lpos - bidi_start] = (rtl) ? -1 : 1;
if (new_level > rtl_par)
bidi_same_direction = false;
} else
log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
rtl = new_rtl;
rtl0 = new_rtl0;
bidi_levels[lpos - bidi_start] = new_level;
while (level > new_level2) {
pos_type old_lpos = stack[--level];
int delta = lpos - old_lpos - 1;
if (level % 2)
delta = -delta;
log2vis_list[lpos - bidi_start] += delta;
log2vis_list[old_lpos - bidi_start] += delta;
}
while (level < new_level)
stack[level++] = lpos;
}
while (level > 0) {
pos_type const old_lpos = stack[--level];
int delta = bidi_end - old_lpos;
if (level % 2)
delta = -delta;
log2vis_list[old_lpos - bidi_start] += delta;
}
pos_type vpos = bidi_start - 1;
for (pos_type lpos = bidi_start;
lpos <= bidi_end; ++lpos) {
vpos += log2vis_list[lpos - bidi_start];
vis2log_list[vpos - bidi_start] = lpos;
log2vis_list[lpos - bidi_start] = vpos;
}
}
// This method requires a previous call to ComputeBidiTables()
bool LyXText::isBoundary(Buffer const * buf, Paragraph const & par,
pos_type pos) const
{
if (!lyxrc.rtl_support || pos == 0)
return false;
if (!bidi_InRange(pos - 1)) {
/// This can happen if pos is the first char of a row.
/// Returning false in this case is incorrect!
return false;
}
bool const rtl = bidi_level(pos - 1) % 2;
bool const rtl2 = bidi_InRange(pos)
? bidi_level(pos) % 2
: par.isRightToLeftPar(buf->params);
return rtl != rtl2;
}
bool LyXText::isBoundary(Buffer const * buf, Paragraph const & par,
pos_type pos, LyXFont const & font) const
{
if (!lyxrc.rtl_support)
return false; // This is just for speedup
bool const rtl = font.isVisibleRightToLeft();
bool const rtl2 = bidi_InRange(pos)
? bidi_level(pos) % 2
: par.isRightToLeftPar(buf->params);
return rtl != rtl2;
}
int LyXText::leftMargin(ParagraphList::iterator pit, Row const & row) const
{
InsetOld * ins;
if (row.pos() < pit->size())
if (pit->getChar(row.pos()) == Paragraph::META_INSET &&
(ins = pit->getInset(row.pos())) &&
(ins->needFullRow() || ins->display()))
return LEFT_MARGIN;
LyXTextClass const & tclass =
bv()->buffer()->params.getLyXTextClass();
LyXLayout_ptr const & layout = pit->layout();
string parindent = layout->parindent;
int x = LEFT_MARGIN;
x += font_metrics::signedWidth(tclass.leftmargin(), tclass.defaultfont());
// this is the way, LyX handles the LaTeX-Environments.
// I have had this idea very late, so it seems to be a
// later added hack and this is true
if (!pit->getDepth()) {
if (pit->layout() == tclass.defaultLayout()) {
// find the previous same level paragraph
if (pit != ownerParagraphs().begin()) {
ParagraphList::iterator newpit =
depthHook(pit, ownerParagraphs(),
pit->getDepth());
if (newpit == pit &&
newpit->layout()->nextnoindent)
parindent.erase();
}
}
} else {
// find the next level paragraph
ParagraphList::iterator newpar = outerHook(pit,
ownerParagraphs());
// make a corresponding row. Needed to call leftMargin()
// check wether it is a sufficent paragraph
if (newpar != ownerParagraphs().end() &&
newpar->layout()->isEnvironment()) {
x = leftMargin(newpar, Row(newpar->size()));
}
if (newpar != ownerParagraphs().end() &&
pit->layout() == tclass.defaultLayout()) {
if (newpar->params().noindent())
parindent.erase();
else {
parindent = newpar->layout()->parindent;
}
}
}
LyXFont const labelfont = getLabelFont(pit);
switch (layout->margintype) {
case MARGIN_DYNAMIC:
if (!layout->leftmargin.empty()) {
x += font_metrics::signedWidth(layout->leftmargin,
tclass.defaultfont());
}
if (!pit->getLabelstring().empty()) {
x += font_metrics::signedWidth(layout->labelindent,
labelfont);
x += font_metrics::width(pit->getLabelstring(),
labelfont);
x += font_metrics::width(layout->labelsep, labelfont);
}
break;
case MARGIN_MANUAL:
x += font_metrics::signedWidth(layout->labelindent, labelfont);
// The width of an empty par, even with manual label, should be 0
if (!pit->empty() && row.pos() >= pit->beginningOfBody()) {
if (!pit->getLabelWidthString().empty()) {
x += font_metrics::width(pit->getLabelWidthString(),
labelfont);
x += font_metrics::width(layout->labelsep, labelfont);
}
}
break;
case MARGIN_STATIC:
x += font_metrics::signedWidth(layout->leftmargin, tclass.defaultfont()) * 4
/ (pit->getDepth() + 4);
break;
case MARGIN_FIRST_DYNAMIC:
if (layout->labeltype == LABEL_MANUAL) {
if (row.pos() >= pit->beginningOfBody()) {
x += font_metrics::signedWidth(layout->leftmargin,
labelfont);
} else {
x += font_metrics::signedWidth(layout->labelindent,
labelfont);
}
} else if (row.pos()
// Special case to fix problems with
// theorems (JMarc)
|| (layout->labeltype == LABEL_STATIC
&& layout->latextype == LATEX_ENVIRONMENT
&& !isFirstInSequence(pit, ownerParagraphs()))) {
x += font_metrics::signedWidth(layout->leftmargin,
labelfont);
} else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
&& layout->labeltype != LABEL_BIBLIO
&& layout->labeltype !=
LABEL_CENTERED_TOP_ENVIRONMENT) {
x += font_metrics::signedWidth(layout->labelindent,
labelfont);
x += font_metrics::width(layout->labelsep, labelfont);
x += font_metrics::width(pit->getLabelstring(),
labelfont);
}
break;
case MARGIN_RIGHT_ADDRESS_BOX:
{
// ok, a terrible hack. The left margin depends on the widest
// row in this paragraph. Do not care about footnotes, they
// are *NOT* allowed in the LaTeX realisation of this layout.
// find the first row of this paragraph
RowList::iterator rit = pit->rows.begin();
RowList::iterator end = pit->rows.end();
int minfill = rit->fill();
for ( ; rit != end; ++rit)
if (rit->fill() < minfill)
minfill = rit->fill();
x += font_metrics::signedWidth(layout->leftmargin,
tclass.defaultfont());
x += minfill;
}
break;
}
if (workWidth() > 0 && !pit->params().leftIndent().zero()) {
LyXLength const len = pit->params().leftIndent();
int const tw = inset_owner ?
inset_owner->latexTextWidth(bv()) : workWidth();
x += len.inPixels(tw);
}
LyXAlignment align;
if (pit->params().align() == LYX_ALIGN_LAYOUT)
align = layout->align;
else
align = pit->params().align();
// set the correct parindent
if (row.pos() == 0) {
if ((layout->labeltype == LABEL_NO_LABEL
|| layout->labeltype == LABEL_TOP_ENVIRONMENT
|| layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
|| (layout->labeltype == LABEL_STATIC
&& layout->latextype == LATEX_ENVIRONMENT
&& !isFirstInSequence(pit, ownerParagraphs())))
&& align == LYX_ALIGN_BLOCK
&& !pit->params().noindent()
// in tabulars and ert paragraphs are never indented!
&& (!pit->inInset() || !pit->inInset()->owner() ||
(pit->inInset()->owner()->lyxCode() != InsetOld::TABULAR_CODE &&
pit->inInset()->owner()->lyxCode() != InsetOld::ERT_CODE))
&& (pit->layout() != tclass.defaultLayout() ||
bv()->buffer()->params.paragraph_separation ==
BufferParams::PARSEP_INDENT)) {
x += font_metrics::signedWidth(parindent,
tclass.defaultfont());
} else if (layout->labeltype == LABEL_BIBLIO) {
// ale970405 Right width for bibitems
x += bibitemMaxWidth(bv(), tclass.defaultfont());
}
}
return x;
}
int LyXText::rightMargin(ParagraphList::iterator pit,
Buffer const & buf, Row const & row) const
{
InsetOld * ins;
if (row.pos() < pit->size())
if ((pit->getChar(row.pos()) == Paragraph::META_INSET) &&
(ins = pit->getInset(row.pos())) &&
(ins->needFullRow() || ins->display()))
return PAPER_MARGIN;
LyXTextClass const & tclass = buf.params.getLyXTextClass();
LyXLayout_ptr const & layout = pit->layout();
return PAPER_MARGIN
+ font_metrics::signedWidth(tclass.rightmargin(),
tclass.defaultfont());
+ font_metrics::signedWidth(layout->rightmargin,
tclass.defaultfont())
* 4 / (pit->getDepth() + 4);
}
int LyXText::labelEnd(ParagraphList::iterator pit, Row const & row) const
{
if (pit->layout()->margintype == MARGIN_MANUAL) {
Row tmprow = row;
tmprow.pos(pit->size());
// return the beginning of the body
return leftMargin(pit, tmprow);
}
// LabelEnd is only needed if the layout
// fills a flushleft label.
return 0;
}
namespace {
// this needs special handling - only newlines count as a break point
pos_type addressBreakPoint(pos_type i, Paragraph const & par)
{
for (; i < par.size(); ++i) {
if (par.isNewline(i))
return i;
}
return par.size();
}
};
pos_type LyXText::rowBreakPoint(ParagraphList::iterator pit,
Row const & row) const
{
// maximum pixel width of a row.
int width = workWidth() - rightMargin(pit, *bv()->buffer(), row);
// inset->textWidth() returns -1 via workWidth(),
// but why ?
if (width < 0)
return pit->size();
LyXLayout_ptr const & layout = pit->layout();
if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
return addressBreakPoint(row.pos(), *pit);
pos_type const pos = row.pos();
pos_type const body_pos = pit->beginningOfBody();
pos_type const last = pit->size();
pos_type point = last;
if (pos == last)
return last;
// Now we iterate through until we reach the right margin
// or the end of the par, then choose the possible break
// nearest that.
int const left = leftMargin(pit, row);
int x = left;
// pixel width since last breakpoint
int chunkwidth = 0;
bool fullrow = false;
pos_type i = pos;
// We re-use the font resolution for the entire font span when possible
LyXFont font = getFont(pit, i);
lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
for (; i < last; ++i) {
if (pit->isNewline(i)) {
point = i;
break;
}
char const c = pit->getChar(i);
if (i > endPosOfFontSpan) {
font = getFont(pit, i);
endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
}
int thiswidth;
// add the auto-hfill from label end to the body
if (body_pos && i == body_pos) {
thiswidth = font_metrics::width(layout->labelsep, getLabelFont(pit));
if (pit->isLineSeparator(i - 1))
thiswidth -= singleWidth(pit, i - 1);
int left_margin = labelEnd(pit, row);
if (thiswidth + x < left_margin)
thiswidth = left_margin - x;
thiswidth += singleWidth(pit, i, c, font);
} else {
thiswidth = singleWidth(pit, i, c, font);
}
x += thiswidth;
chunkwidth += thiswidth;
InsetOld * in = pit->isInset(i) ? pit->getInset(i) : 0;
fullrow = in && (in->display() || in->needFullRow());
// break before a character that will fall off
// the right of the row
if (x >= width) {
// if no break before or we are at an inset
// that will take up a row, break here
if (point == last || fullrow || chunkwidth >= (width - left)) {
if (pos < i)
point = i - 1;
else
point = i;
}
break;
}
if (!in || in->isChar()) {
// some insets are line separators too
if (pit->isLineSeparator(i)) {
point = i;
chunkwidth = 0;
}
continue;
}
if (!fullrow)
continue;
// full row insets start at a new row
if (i == pos) {
if (pos < last - 1) {
point = i;
if (pit->isLineSeparator(i + 1))
++point;
} else {
// to avoid extra rows
point = last;
}
} else {
point = i - 1;
}
return point;
}
if (point == last && x >= width) {
// didn't find one, break at the point we reached the edge
point = i;
} else if (i == last && x < width) {
// found one, but we fell off the end of the par, so prefer
// that.
point = last;
}
// manual labels cannot be broken in LaTeX. But we
// want to make our on-screen rendering of footnotes
// etc. still break
if (!fullrow && body_pos && point < body_pos)
point = body_pos - 1;
return point;
}
// returns the minimum space a row needs on the screen in pixel
int LyXText::fill(ParagraphList::iterator pit,
RowList::iterator row, int paper_width) const
{
if (paper_width < 0)
return 0;
int w;
// get the pure distance
pos_type const last = lastPrintablePos(*pit, row);
LyXLayout_ptr const & layout = pit->layout();
// special handling of the right address boxes
if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
int const tmpfill = row->fill();
row->fill(0); // the minfill in MarginLeft()
w = leftMargin(pit, *row);
row->fill(tmpfill);
} else
w = leftMargin(pit, *row);
pos_type const body_pos = pit->beginningOfBody();
pos_type i = row->pos();
if (! pit->empty() && i <= last) {
// We re-use the font resolution for the entire span when possible
LyXFont font = getFont(pit, i);
lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
while (i <= last) {
if (body_pos > 0 && i == body_pos) {
w += font_metrics::width(layout->labelsep, getLabelFont(pit));
if (pit->isLineSeparator(i - 1))
w -= singleWidth(pit, i - 1);
int left_margin = labelEnd(pit, *row);
if (w < left_margin)
w = left_margin;
}
char const c = pit->getChar(i);
if (IsPrintable(c) && i > endPosOfFontSpan) {
// We need to get the next font
font = getFont(pit, i);
endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
}
w += singleWidth(pit, i, c, font);
++i;
}
}
if (body_pos > 0 && body_pos > last) {
w += font_metrics::width(layout->labelsep, getLabelFont(pit));
if (last >= 0 && pit->isLineSeparator(last))
w -= singleWidth(pit, last);
int const left_margin = labelEnd(pit, *row);
if (w < left_margin)
w = left_margin;
}
int const fill = paper_width - w - rightMargin(pit, *bv()->buffer(), *row);
// If this case happens, it means that our calculation
// of the widths of the chars when we do rowBreakPoint()
// went wrong for some reason. Typically in list bodies.
// Things just about hobble on anyway, though you'll end
// up with a "fill_separator" less than zero, which corresponds
// to inter-word spacing being too small. Hopefully this problem
// will die when the label hacks die.
if (lyxerr.debugging() && fill < 0) {
lyxerr[Debug::GUI] << "Eek, fill() was < 0: " << fill
<< " w " << w << " paper_width " << paper_width
<< " right margin " << rightMargin(pit, *bv()->buffer(), *row) << endl;
}
return fill;
}
// returns the minimum space a manual label needs on the screen in pixel
int LyXText::labelFill(ParagraphList::iterator pit, Row const & row) const
{
pos_type last = pit->beginningOfBody();
Assert(last > 0);
// -1 because a label ends either with a space that is in the label,
// or with the beginning of a footnote that is outside the label.
--last;
// a separator at this end does not count
if (pit->isLineSeparator(last))
--last;
int w = 0;
pos_type i = row.pos();
while (i <= last) {
w += singleWidth(pit, i);
++i;
}
int fill = 0;
string const & labwidstr = pit->params().labelWidthString();
if (!labwidstr.empty()) {
LyXFont const labfont = getLabelFont(pit);
int const labwidth = font_metrics::width(labwidstr, labfont);
fill = max(labwidth - w, 0);
}
return fill;
}
LColor::color LyXText::backgroundColor() const
{
if (inset_owner)
return inset_owner->backgroundColor();
else
return LColor::background;
}
void LyXText::setHeightOfRow(ParagraphList::iterator pit, RowList::iterator rit)
{
// get the maximum ascent and the maximum descent
double layoutasc = 0;
double layoutdesc = 0;
double tmptop = 0;
// ok, let us initialize the maxasc and maxdesc value.
// Only the fontsize count. The other properties
// are taken from the layoutfont. Nicer on the screen :)
LyXLayout_ptr const & layout = pit->layout();
// as max get the first character of this row then it can increase but not
// decrease the height. Just some point to start with so we don't have to
// do the assignment below too often.
LyXFont font = getFont(pit, rit->pos());
LyXFont::FONT_SIZE const tmpsize = font.size();
font = getLayoutFont(pit);
LyXFont::FONT_SIZE const size = font.size();
font.setSize(tmpsize);
LyXFont labelfont = getLabelFont(pit);
double spacing_val = 1.0;
if (!pit->params().spacing().isDefault())
spacing_val = pit->params().spacing().getValue();
else
spacing_val = bv()->buffer()->params.spacing.getValue();
//lyxerr << "spacing_val = " << spacing_val << endl;
int maxasc = int(font_metrics::maxAscent(font) *
layout->spacing.getValue() * spacing_val);
int maxdesc = int(font_metrics::maxDescent(font) *
layout->spacing.getValue() * spacing_val);
pos_type const pos_end = lastPos(*pit, rit);
int labeladdon = 0;
int maxwidth = 0;
if (!pit->empty()) {
// We re-use the font resolution for the entire font span when possible
LyXFont font = getFont(pit, rit->pos());
lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(rit->pos());
// Optimisation
Paragraph const & par = *pit;
// Check if any insets are larger
for (pos_type pos = rit->pos(); pos <= pos_end; ++pos) {
// Manual inlined optimised version of common case of
// "maxwidth += singleWidth(pit, pos);"
char const c = par.getChar(pos);
if (IsPrintable(c)) {
if (pos > endPosOfFontSpan) {
// We need to get the next font
font = getFont(pit, pos);
endPosOfFontSpan = par.getEndPosOfFontSpan(pos);
}
if (! font.language()->RightToLeft()) {
maxwidth += font_metrics::width(c, font);
} else {
// Fall-back to normal case
maxwidth += singleWidth(pit, pos, c, font);
// And flush font cache
endPosOfFontSpan = 0;
}
} else {
// Special handling of insets - are any larger?
if (par.isInset(pos)) {
InsetOld const * tmpinset = par.getInset(pos);
if (tmpinset) {
maxwidth += tmpinset->width();
maxasc = max(maxasc, tmpinset->ascent());
maxdesc = max(maxdesc, tmpinset->descent());
}
} else {
// Fall-back to normal case
maxwidth += singleWidth(pit, pos, c, font);
// And flush font cache
endPosOfFontSpan = 0;
}
}
}
}
// Check if any custom fonts are larger (Asger)
// This is not completely correct, but we can live with the small,
// cosmetic error for now.
LyXFont::FONT_SIZE maxsize =
pit->highestFontInRange(rit->pos(), pos_end, size);
if (maxsize > font.size()) {
font.setSize(maxsize);
maxasc = max(maxasc, font_metrics::maxAscent(font));
maxdesc = max(maxdesc, font_metrics::maxDescent(font));
}
// This is nicer with box insets:
++maxasc;
++maxdesc;
rit->ascent_of_text(maxasc);
// is it a top line?
if (!rit->pos()) {
// some parksips VERY EASY IMPLEMENTATION
if (bv()->buffer()->params.paragraph_separation ==
BufferParams::PARSEP_SKIP)
{
if (layout->isParagraph()
&& pit->getDepth() == 0
&& pit != ownerParagraphs().begin())
{
maxasc += bv()->buffer()->params.getDefSkip().inPixels(*bv());
} else if (pit != ownerParagraphs().begin() &&
boost::prior(pit)->layout()->isParagraph() &&
boost::prior(pit)->getDepth() == 0)
{
// is it right to use defskip here too? (AS)
maxasc += bv()->buffer()->params.getDefSkip().inPixels(*bv());
}
}
// the top margin
if (pit == ownerParagraphs().begin() && !isInInset())
maxasc += PAPER_MARGIN;
// add the vertical spaces, that the user added
maxasc += getLengthMarkerHeight(*bv(), pit->params().spaceTop());
// do not forget the DTP-lines!
// there height depends on the font of the nearest character
if (pit->params().lineTop())
maxasc += 2 * font_metrics::ascent('x', getFont(pit, 0));
// and now the pagebreaks
if (pit->params().pagebreakTop())
maxasc += 3 * defaultRowHeight();
if (pit->params().startOfAppendix())
maxasc += 3 * defaultRowHeight();
// This is special code for the chapter, since the label of this
// layout is printed in an extra row
if (layout->labeltype == LABEL_COUNTER_CHAPTER
&& bv()->buffer()->params.secnumdepth >= 0)
{
float spacing_val = 1.0;
if (!pit->params().spacing().isDefault()) {
spacing_val = pit->params().spacing().getValue();
} else {
spacing_val = bv()->buffer()->params.spacing.getValue();
}
labeladdon = int(font_metrics::maxDescent(labelfont) *
layout->spacing.getValue() *
spacing_val)
+ int(font_metrics::maxAscent(labelfont) *
layout->spacing.getValue() *
spacing_val);
}
// special code for the top label
if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
|| layout->labeltype == LABEL_BIBLIO
|| layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
&& isFirstInSequence(pit, ownerParagraphs())
&& !pit->getLabelstring().empty())
{
float spacing_val = 1.0;
if (!pit->params().spacing().isDefault()) {
spacing_val = pit->params().spacing().getValue();
} else {
spacing_val = bv()->buffer()->params.spacing.getValue();
}
labeladdon = int(
(font_metrics::maxAscent(labelfont) +
font_metrics::maxDescent(labelfont)) *
layout->spacing.getValue() *
spacing_val
+ layout->topsep * defaultRowHeight()
+ layout->labelbottomsep * defaultRowHeight());
}
// And now the layout spaces, for example before and after
// a section, or between the items of a itemize or enumerate
// environment.
if (!pit->params().pagebreakTop()) {
ParagraphList::iterator prev =
depthHook(pit, ownerParagraphs(),
pit->getDepth());
if (prev != pit && prev->layout() == layout &&
prev->getDepth() == pit->getDepth() &&
prev->getLabelWidthString() == pit->getLabelWidthString())
{
layoutasc = (layout->itemsep * defaultRowHeight());
} else if (rit != firstRow()) {
tmptop = layout->topsep;
//if (boost::prior(pit)->getDepth() >= pit->getDepth())
// tmptop -= getPar(previousRow(rit))->layout()->bottomsep;
if (tmptop > 0)
layoutasc = (tmptop * defaultRowHeight());
} else if (pit->params().lineTop()) {
tmptop = layout->topsep;
if (tmptop > 0)
layoutasc = (tmptop * defaultRowHeight());
}
prev = outerHook(pit, ownerParagraphs());
if (prev != ownerParagraphs().end()) {
maxasc += int(prev->layout()->parsep * defaultRowHeight());
} else if (pit != ownerParagraphs().begin()) {
ParagraphList::iterator prior_pit = boost::prior(pit);
if (prior_pit->getDepth() != 0 ||
prior_pit->layout() == layout) {
maxasc += int(layout->parsep * defaultRowHeight());
}
}
}
}
// is it a bottom line?
if (boost::next(rit) == pit->rows.end()) {
// the bottom margin
ParagraphList::iterator nextpit = boost::next(pit);
if (nextpit == ownerParagraphs().end() && !isInInset())
maxdesc += PAPER_MARGIN;
// add the vertical spaces, that the user added
maxdesc += getLengthMarkerHeight(*bv(), pit->params().spaceBottom());
// do not forget the DTP-lines!
// there height depends on the font of the nearest character
if (pit->params().lineBottom())
maxdesc += 2 * font_metrics::ascent('x',
getFont(pit, max(pos_type(0), pit->size() - 1)));
// and now the pagebreaks
if (pit->params().pagebreakBottom())
maxdesc += 3 * defaultRowHeight();
// and now the layout spaces, for example before and after
// a section, or between the items of a itemize or enumerate
// environment
if (!pit->params().pagebreakBottom()
&& nextpit != ownerParagraphs().end()) {
ParagraphList::iterator comparepit = pit;
float usual = 0;
float unusual = 0;
if (comparepit->getDepth() > nextpit->getDepth()) {
usual = (comparepit->layout()->bottomsep * defaultRowHeight());
comparepit = depthHook(comparepit, ownerParagraphs(), nextpit->getDepth());
if (comparepit->layout()!= nextpit->layout()
|| nextpit->getLabelWidthString() !=
comparepit->getLabelWidthString())
{
unusual = (comparepit->layout()->bottomsep * defaultRowHeight());
}
if (unusual > usual)
layoutdesc = unusual;
else
layoutdesc = usual;
} else if (comparepit->getDepth() == nextpit->getDepth()) {
if (comparepit->layout() != nextpit->layout()
|| nextpit->getLabelWidthString() !=
comparepit->getLabelWidthString())
layoutdesc = int(comparepit->layout()->bottomsep * defaultRowHeight());
}
}
}
// incalculate the layout spaces
maxasc += int(layoutasc * 2 / (2 + pit->getDepth()));
maxdesc += int(layoutdesc * 2 / (2 + pit->getDepth()));
rit->height(maxasc + maxdesc + labeladdon);
rit->baseline(maxasc + labeladdon);
rit->top_of_text(rit->baseline() - font_metrics::maxAscent(font));
double x = 0;
rit->width(int(maxwidth + x));
if (inset_owner) {
width = max(0, workWidth());
RowList::iterator rit = firstRow();
RowList::iterator end = endRow();
ParagraphList::iterator it = ownerParagraphs().begin();
while (rit != end) {
if (rit->width() > width)
width = rit->width();
nextRow(it, rit);
}
}
}
void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
{
// allow only if at start or end, or all previous is new text
if (cursor.pos() && cursor.pos() != cursor.par()->size()
&& cursor.par()->isChangeEdited(0, cursor.pos()))
return;
LyXTextClass const & tclass =
bv()->buffer()->params.getLyXTextClass();
LyXLayout_ptr const & layout = cursor.par()->layout();
// this is only allowed, if the current paragraph is not empty or caption
// and if it has not the keepempty flag active
if (cursor.par()->empty() && !cursor.par()->allowEmpty()
&& layout->labeltype != LABEL_SENSITIVE)
return;
recordUndo(bv(), Undo::ATOMIC, cursor.par());
// Always break behind a space
//
// It is better to erase the space (Dekel)
if (cursor.pos() < cursor.par()->size()
&& cursor.par()->isLineSeparator(cursor.pos()))
cursor.par()->erase(cursor.pos());
// break the paragraph
if (keep_layout)
keep_layout = 2;
else
keep_layout = layout->isEnvironment();
// we need to set this before we insert the paragraph. IMO the
// breakParagraph call should return a bool if it inserts the
// paragraph before or behind and we should react on that one
// but we can fix this in 1.3.0 (Jug 20020509)
bool const isempty = (cursor.par()->allowEmpty() && cursor.par()->empty());
::breakParagraph(bv()->buffer()->params, paragraphs, cursor.par(),
cursor.pos(), keep_layout);
#warning Trouble Point! (Lgb)
// When ::breakParagraph is called from within an inset we must
// ensure that the correct ParagraphList is used. Today that is not
// the case and the Buffer::paragraphs is used. Not good. (Lgb)
ParagraphList::iterator next_par = boost::next(cursor.par());
// well this is the caption hack since one caption is really enough
if (layout->labeltype == LABEL_SENSITIVE) {
if (!cursor.pos())
// set to standard-layout
cursor.par()->applyLayout(tclass.defaultLayout());
else
// set to standard-layout
next_par->applyLayout(tclass.defaultLayout());
}
// if the cursor is at the beginning of a row without prior newline,
// move one row up!
// This touches only the screen-update. Otherwise we would may have
// an empty row on the screen
if (cursor.pos() && cursorRow()->pos() == cursor.pos()
&& !cursor.par()->isNewline(cursor.pos() - 1))
{
cursorLeft(bv());
}
while (!next_par->empty() && next_par->isNewline(0))
next_par->erase(0);
updateCounters();
redoParagraph(cursor.par());
redoParagraph(next_par);
// This check is necessary. Otherwise the new empty paragraph will
// be deleted automatically. And it is more friendly for the user!
if (cursor.pos() || isempty)
setCursor(next_par, 0);
else
setCursor(cursor.par(), 0);
}
// convenience function
void LyXText::redoParagraph()
{
clearSelection();
redoParagraph(cursor.par());
setCursorIntern(cursor.par(), cursor.pos());
}
// insert a character, moves all the following breaks in the
// same Paragraph one to the right and make a rebreak
void LyXText::insertChar(char c)
{
recordUndo(bv(), Undo::INSERT, cursor.par());
// When the free-spacing option is set for the current layout,
// disable the double-space checking
bool const freeSpacing = cursor.par()->layout()->free_spacing ||
cursor.par()->isFreeSpacing();
if (lyxrc.auto_number) {
static string const number_operators = "+-/*";
static string const number_unary_operators = "+-";
static string const number_seperators = ".,:";
if (current_font.number() == LyXFont::ON) {
if (!IsDigit(c) && !contains(number_operators, c) &&
!(contains(number_seperators, c) &&
cursor.pos() >= 1 &&
cursor.pos() < cursor.par()->size() &&
getFont(cursor.par(), cursor.pos()).number() == LyXFont::ON &&
getFont(cursor.par(), cursor.pos() - 1).number() == LyXFont::ON)
)
number(bv()); // Set current_font.number to OFF
} else if (IsDigit(c) &&
real_current_font.isVisibleRightToLeft()) {
number(bv()); // Set current_font.number to ON
if (cursor.pos() > 0) {
char const c = cursor.par()->getChar(cursor.pos() - 1);
if (contains(number_unary_operators, c) &&
(cursor.pos() == 1 ||
cursor.par()->isSeparator(cursor.pos() - 2) ||
cursor.par()->isNewline(cursor.pos() - 2))
) {
setCharFont(
cursor.par(),
cursor.pos() - 1,
current_font);
} else if (contains(number_seperators, c) &&
cursor.pos() >= 2 &&
getFont(
cursor.par(),
cursor.pos() - 2).number() == LyXFont::ON) {
setCharFont(
cursor.par(),
cursor.pos() - 1,
current_font);
}
}
}
}
// First check, if there will be two blanks together or a blank at
// the beginning of a paragraph.
// I decided to handle blanks like normal characters, the main
// difference are the special checks when calculating the row.fill
// (blank does not count at the end of a row) and the check here
// The bug is triggered when we type in a description environment:
// The current_font is not changed when we go from label to main text
// and it should (along with realtmpfont) when we type the space.
// CHECK There is a bug here! (Asger)
// store the current font. This is because of the use of cursor
// movements. The moving cursor would refresh the current font
LyXFont realtmpfont = real_current_font;
LyXFont rawtmpfont = current_font;
if (!freeSpacing && IsLineSeparatorChar(c)) {
if ((cursor.pos() > 0
&& cursor.par()->isLineSeparator(cursor.pos() - 1))
|| (cursor.pos() > 0
&& cursor.par()->isNewline(cursor.pos() - 1))
|| (cursor.pos() == 0)) {
static bool sent_space_message = false;
if (!sent_space_message) {
if (cursor.pos() == 0)
bv()->owner()->message(_("You cannot insert a space at the beginning of a paragraph. Please read the Tutorial."));
else
bv()->owner()->message(_("You cannot type two spaces this way. Please read the Tutorial."));
sent_space_message = true;
}
charInserted();
return;
}
}
// Here case LyXText::InsertInset already inserted the character
if (c != Paragraph::META_INSET)
cursor.par()->insertChar(cursor.pos(), c);
setCharFont(cursor.par(), cursor.pos(), rawtmpfont);
current_font = rawtmpfont;
real_current_font = realtmpfont;
redoParagraph(cursor.par());
setCursor(cursor.par(), cursor.pos() + 1, false, cursor.boundary());
charInserted();
}
void LyXText::charInserted()
{
// Here we could call finishUndo for every 20 characters inserted.
// This is from my experience how emacs does it. (Lgb)
static unsigned int counter;
if (counter < 20) {
++counter;
} else {
finishUndo();
counter = 0;
}
}
void LyXText::prepareToPrint(ParagraphList::iterator pit,
RowList::iterator const rit) const
{
double w = rit->fill();
double fill_hfill = 0;
double fill_label_hfill = 0;
double fill_separator = 0;
double x = 0;
bool const is_rtl =
pit->isRightToLeftPar(bv()->buffer()->params);
if (is_rtl)
x = workWidth() > 0 ? rightMargin(pit, *bv()->buffer(), *rit) : 0;
else
x = workWidth() > 0 ? leftMargin(pit, *rit) : 0;
// is there a manual margin with a manual label
LyXLayout_ptr const & layout = pit->layout();
if (layout->margintype == MARGIN_MANUAL
&& layout->labeltype == LABEL_MANUAL) {
/// We might have real hfills in the label part
int nlh = numberOfLabelHfills(*pit, rit);
// A manual label par (e.g. List) has an auto-hfill
// between the label text and the body of the
// paragraph too.
// But we don't want to do this auto hfill if the par
// is empty.
if (!pit->empty())
++nlh;
if (nlh && !pit->getLabelWidthString().empty()) {
fill_label_hfill = labelFill(pit, *rit) / double(nlh);
}
}
// are there any hfills in the row?
int const nh = numberOfHfills(*pit, rit);
if (nh) {
if (w > 0)
fill_hfill = w / nh;
// we don't have to look at the alignment if it is ALIGN_LEFT and
// if the row is already larger then the permitted width as then
// we force the LEFT_ALIGN'edness!
} else if (int(rit->width()) < workWidth()) {
// is it block, flushleft or flushright?
// set x how you need it
int align;
if (pit->params().align() == LYX_ALIGN_LAYOUT) {
align = layout->align;
} else {
align = pit->params().align();
}
// center displayed insets
InsetOld * inset = 0;
if (rit->pos() < pit->size()
&& pit->isInset(rit->pos())
&& (inset = pit->getInset(rit->pos()))
&& (inset->display())) // || (inset->scroll() < 0)))
align = (inset->lyxCode() == InsetOld::MATHMACRO_CODE)
? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
// ERT insets should always be LEFT ALIGNED on screen
inset = pit->inInset();
if (inset && inset->owner() &&
inset->owner()->lyxCode() == InsetOld::ERT_CODE)
{
align = LYX_ALIGN_LEFT;
}
switch (align) {
case LYX_ALIGN_BLOCK:
{
int const ns = numberOfSeparators(*pit, rit);
RowList::iterator next_row = boost::next(rit);
if (ns
&& next_row != pit->rows.end()
&& !pit->isNewline(next_row->pos() - 1)
&& !(pit->isInset(next_row->pos())
&& pit->getInset(next_row->pos())
&& pit->getInset(next_row->pos())->display())
) {
fill_separator = w / ns;
} else if (is_rtl) {
x += w;
}
break;
}
case LYX_ALIGN_RIGHT:
x += w;
break;
case LYX_ALIGN_CENTER:
x += w / 2;
break;
}
}
computeBidiTables(pit, bv()->buffer(), rit);
if (is_rtl) {
pos_type body_pos = pit->beginningOfBody();
pos_type last = lastPos(*pit, rit);
if (body_pos > 0 &&
(body_pos - 1 > last ||
!pit->isLineSeparator(body_pos - 1))) {
x += font_metrics::width(layout->labelsep, getLabelFont(pit));
if (body_pos - 1 <= last)
x += fill_label_hfill;
}
}
rit->fill_hfill(fill_hfill);
rit->fill_label_hfill(fill_label_hfill);
rit->fill_separator(fill_separator);
rit->x(x);
}
// important for the screen
// the cursor set functions have a special mechanism. When they
// realize, that you left an empty paragraph, they will delete it.
// They also delete the corresponding row
void LyXText::cursorRightOneWord()
{
::cursorRightOneWord(cursor, ownerParagraphs());
setCursor(cursor.par(), cursor.pos());
}
// Skip initial whitespace at end of word and move cursor to *start*
// of prior word, not to end of next prior word.
void LyXText::cursorLeftOneWord()
{
LyXCursor tmpcursor = cursor;
::cursorLeftOneWord(tmpcursor, ownerParagraphs());
setCursor(tmpcursor.par(), tmpcursor.pos());
}
void LyXText::selectWord(word_location loc)
{
LyXCursor from = cursor;
LyXCursor to;
::getWord(from, to, loc, ownerParagraphs());
if (cursor != from)
setCursor(from.par(), from.pos());
if (to == from)
return;
selection.cursor = cursor;
setCursor(to.par(), to.pos());
setSelection();
}
// Select the word currently under the cursor when no
// selection is currently set
bool LyXText::selectWordWhenUnderCursor(word_location loc)
{
if (!selection.set()) {
selectWord(loc);
return selection.set();
}
return false;
}
void LyXText::acceptChange()
{
if (!selection.set() && cursor.par()->size())
return;
if (selection.start.par() == selection.end.par()) {
LyXCursor & startc = selection.start;
LyXCursor & endc = selection.end;
recordUndo(bv(), Undo::INSERT, startc.par());
startc.par()->acceptChange(startc.pos(), endc.pos());
finishUndo();
clearSelection();
redoParagraph(startc.par());
setCursorIntern(startc.par(), 0);
}
#warning handle multi par selection
}
void LyXText::rejectChange()
{
if (!selection.set() && cursor.par()->size())
return;
if (selection.start.par() == selection.end.par()) {
LyXCursor & startc = selection.start;
LyXCursor & endc = selection.end;
recordUndo(bv(), Undo::INSERT, startc.par());
startc.par()->rejectChange(startc.pos(), endc.pos());
finishUndo();
clearSelection();
redoParagraph(startc.par());
setCursorIntern(startc.par(), 0);
}
#warning handle multi par selection
}
// This function is only used by the spellchecker for NextWord().
// It doesn't handle LYX_ACCENTs and probably never will.
WordLangTuple const
LyXText::selectNextWordToSpellcheck(float & value)
{
if (the_locking_inset) {
WordLangTuple word = the_locking_inset->selectNextWordToSpellcheck(bv(), value);
if (!word.word().empty()) {
value += float(cursor.y());
value /= float(height);
return word;
}
// we have to go on checking so move cursor to the next char
if (cursor.pos() == cursor.par()->size()) {
if (boost::next(cursor.par()) == ownerParagraphs().end())
return word;
cursor.par(boost::next(cursor.par()));
cursor.pos(0);
} else
cursor.pos(cursor.pos() + 1);
}
ParagraphList::iterator tmppit = cursor.par();
// If this is not the very first word, skip rest of
// current word because we are probably in the middle
// of a word if there is text here.
if (cursor.pos() || cursor.par() != ownerParagraphs().begin()) {
while (cursor.pos() < cursor.par()->size()
&& cursor.par()->isLetter(cursor.pos()))
cursor.pos(cursor.pos() + 1);
}
// Now, skip until we have real text (will jump paragraphs)
while (true) {
ParagraphList::iterator cpit = cursor.par();
pos_type const cpos(cursor.pos());
if (cpos == cpit->size()) {
if (boost::next(cpit) != ownerParagraphs().end()) {
cursor.par(boost::next(cpit));
cursor.pos(0);
continue;
}
break;
}
bool const is_good_inset = cpit->isInset(cpos)
&& cpit->getInset(cpos)->allowSpellcheck();
if (!isDeletedText(*cpit, cpos)
&& (is_good_inset || cpit->isLetter(cpos)))
break;
cursor.pos(cpos + 1);
}
// now check if we hit an inset so it has to be a inset containing text!
if (cursor.pos() < cursor.par()->size() &&
cursor.par()->isInset(cursor.pos())) {
// lock the inset!
FuncRequest cmd(bv(), LFUN_INSET_EDIT, "left");
cursor.par()->getInset(cursor.pos())->localDispatch(cmd);
// now call us again to do the above trick
// but obviously we have to start from down below ;)
return bv()->text->selectNextWordToSpellcheck(value);
}
// Update the value if we changed paragraphs
if (cursor.par() != tmppit) {
setCursor(cursor.par(), cursor.pos());
value = float(cursor.y())/float(height);
}
// Start the selection from here
selection.cursor = cursor;
string lang_code = getFont(cursor.par(), cursor.pos()).language()->code();
// and find the end of the word (insets like optional hyphens
// and ligature break are part of a word)
while (cursor.pos() < cursor.par()->size()
&& cursor.par()->isLetter(cursor.pos())
&& !isDeletedText(*cursor.par(), cursor.pos()))
cursor.pos(cursor.pos() + 1);
// Finally, we copy the word to a string and return it
string str;
if (selection.cursor.pos() < cursor.pos()) {
pos_type i;
for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
if (!cursor.par()->isInset(i))
str += cursor.par()->getChar(i);
}
}
return WordLangTuple(str, lang_code);
}
// This one is also only for the spellchecker
void LyXText::selectSelectedWord()
{
if (the_locking_inset) {
the_locking_inset->selectSelectedWord(bv());
return;
}
// move cursor to the beginning
setCursor(selection.cursor.par(), selection.cursor.pos());
// set the sel cursor
selection.cursor = cursor;
// now find the end of the word
while (cursor.pos() < cursor.par()->size()
&& cursor.par()->isLetter(cursor.pos()))
cursor.pos(cursor.pos() + 1);
setCursor(cursor.par(), cursor.pos());
// finally set the selection
setSelection();
}
// Delete from cursor up to the end of the current or next word.
void LyXText::deleteWordForward()
{
if (cursor.par()->empty())
cursorRight(bv());
else {
LyXCursor tmpcursor = cursor;
selection.set(true); // to avoid deletion
cursorRightOneWord();
setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
selection.cursor = cursor;
cursor = tmpcursor;
setSelection();
// Great, CutSelection() gets rid of multiple spaces.
cutSelection(true, false);
}
}
// Delete from cursor to start of current or prior word.
void LyXText::deleteWordBackward()
{
if (cursor.par()->empty())
cursorLeft(bv());
else {
LyXCursor tmpcursor = cursor;
selection.set(true); // to avoid deletion
cursorLeftOneWord();
setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
selection.cursor = cursor;
cursor = tmpcursor;
setSelection();
cutSelection(true, false);
}
}
// Kill to end of line.
void LyXText::deleteLineForward()
{
if (cursor.par()->empty())
// Paragraph is empty, so we just go to the right
cursorRight(bv());
else {
LyXCursor tmpcursor = cursor;
// We can't store the row over a regular setCursor
// so we set it to 0 and reset it afterwards.
selection.set(true); // to avoid deletion
cursorEnd();
setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
selection.cursor = cursor;
cursor = tmpcursor;
setSelection();
// What is this test for ??? (JMarc)
if (!selection.set()) {
deleteWordForward();
} else {
cutSelection(true, false);
}
}
}
void LyXText::changeCase(LyXText::TextCase action)
{
LyXCursor from;
LyXCursor to;
if (selection.set()) {
from = selection.start;
to = selection.end;
} else {
from = cursor;
::getWord(from, to, lyx::PARTIAL_WORD, ownerParagraphs());
setCursor(to.par(), to.pos() + 1);
}
recordUndo(bv(), Undo::ATOMIC, from.par(), to.par());
pos_type pos = from.pos();
ParagraphList::iterator pit = from.par();
while (pit != ownerParagraphs().end() &&
(pos != to.pos() || pit != to.par())) {
if (pos == pit->size()) {
++pit;
pos = 0;
continue;
}
unsigned char c = pit->getChar(pos);
if (!IsInsetChar(c)) {
switch (action) {
case text_lowercase:
c = lowercase(c);
break;
case text_capitalization:
c = uppercase(c);
action = text_lowercase;
break;
case text_uppercase:
c = uppercase(c);
break;
}
}
#warning changes
pit->setChar(pos, c);
++pos;
}
}
void LyXText::Delete()
{
// this is a very easy implementation
LyXCursor old_cursor = cursor;
int const old_cur_par_id = old_cursor.par()->id();
int const old_cur_par_prev_id =
(old_cursor.par() != ownerParagraphs().begin() ?
boost::prior(old_cursor.par())->id() : -1);
// just move to the right
cursorRight(bv());
// CHECK Look at the comment here.
// This check is not very good...
// The cursorRightIntern calls DeleteEmptyParagrapgMechanism
// and that can very well delete the par or par->previous in
// old_cursor. Will a solution where we compare paragraph id's
//work better?
if ((cursor.par() != ownerParagraphs().begin() ? boost::prior(cursor.par())->id() : -1)
== old_cur_par_prev_id
&& cursor.par()->id() != old_cur_par_id) {
// delete-empty-paragraph-mechanism has done it
return;
}
// if you had success make a backspace
if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
LyXCursor tmpcursor = cursor;
// to make sure undo gets the right cursor position
cursor = old_cursor;
recordUndo(bv(), Undo::DELETE, cursor.par());
cursor = tmpcursor;
backspace();
}
}
void LyXText::backspace()
{
// Get the font that is used to calculate the baselineskip
pos_type lastpos = cursor.par()->size();
if (cursor.pos() == 0) {
// The cursor is at the beginning of a paragraph,
// so the the backspace will collapse two paragraphs into one.
// but it's not allowed unless it's new
if (cursor.par()->isChangeEdited(0, cursor.par()->size()))
return;
// we may paste some paragraphs
// is it an empty paragraph?
if (lastpos == 0
|| (lastpos == 1 && cursor.par()->isSeparator(0))) {
// This is an empty paragraph and we delete it just
// by moving the cursor one step
// left and let the DeleteEmptyParagraphMechanism
// handle the actual deletion of the paragraph.
if (cursor.par() != ownerParagraphs().begin()) {
ParagraphList::iterator tmppit = boost::prior(cursor.par());
if (cursor.par()->layout() == tmppit->layout()
&& cursor.par()->getAlign() == tmppit->getAlign()) {
// Inherit bottom DTD from the paragraph below.
// (the one we are deleting)
tmppit->params().lineBottom(cursor.par()->params().lineBottom());
tmppit->params().spaceBottom(cursor.par()->params().spaceBottom());
tmppit->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
}
cursorLeft(bv());
// the layout things can change the height of a row !
redoParagraph();
return;
}
}
if (cursor.par() != ownerParagraphs().begin()) {
recordUndo(bv(), Undo::DELETE,
boost::prior(cursor.par()),
cursor.par());
}
ParagraphList::iterator tmppit = cursor.par();
// We used to do cursorLeftIntern() here, but it is
// not a good idea since it triggers the auto-delete
// mechanism. So we do a cursorLeftIntern()-lite,
// without the dreaded mechanism. (JMarc)
if (cursor.par() != ownerParagraphs().begin()) {
// steps into the above paragraph.
setCursorIntern(boost::prior(cursor.par()),
boost::prior(cursor.par())->size(),
false);
}
// Pasting is not allowed, if the paragraphs have different
// layout. I think it is a real bug of all other
// word processors to allow it. It confuses the user.
//Correction: Pasting is always allowed with standard-layout
LyXTextClass const & tclass =
bv()->buffer()->params.getLyXTextClass();
if (cursor.par() != tmppit
&& (cursor.par()->layout() == tmppit->layout()
|| tmppit->layout() == tclass.defaultLayout())
&& cursor.par()->getAlign() == tmppit->getAlign()) {
mergeParagraph(bv()->buffer()->params,
bv()->buffer()->paragraphs, cursor.par());
if (cursor.pos() && cursor.par()->isSeparator(cursor.pos() - 1))
cursor.pos(cursor.pos() - 1);
// the row may have changed, block, hfills etc.
updateCounters();
setCursor(cursor.par(), cursor.pos(), false);
}
} else {
// this is the code for a normal backspace, not pasting
// any paragraphs
recordUndo(bv(), Undo::DELETE, cursor.par());
// We used to do cursorLeftIntern() here, but it is
// not a good idea since it triggers the auto-delete
// mechanism. So we do a cursorLeftIntern()-lite,
// without the dreaded mechanism. (JMarc)
setCursorIntern(cursor.par(), cursor.pos() - 1,
false, cursor.boundary());
cursor.par()->erase(cursor.pos());
}
lastpos = cursor.par()->size();
if (cursor.pos() == lastpos)
setCurrentFont();
redoParagraph();
setCursor(cursor.par(), cursor.pos(), false, !cursor.boundary());
}
RowList::iterator LyXText::cursorRow() const
{
return getRow(cursor.par(), cursor.pos());
}
RowList::iterator LyXText::getRow(LyXCursor const & cur) const
{
return getRow(cur.par(), cur.pos());
}
RowList::iterator
LyXText::getRow(ParagraphList::iterator pit, pos_type pos) const
{
RowList::iterator rit = pit->rows.begin();
RowList::iterator end = pit->rows.end();
#warning Why is this next thing needed? (Andre)
while (rit != end
&& rit->pos() < pos
&& boost::next(rit) != end
&& boost::next(rit)->pos() <= pos)
++rit;
return rit;
}
// returns pointer to a specified row
RowList::iterator
LyXText::getRow(ParagraphList::iterator pit, pos_type pos, int & y) const
{
y = 0;
if (noRows())
return firstRow();
ParagraphList::iterator it = ownerParagraphs().begin();
for ( ; it != pit; ++it) {
RowList::iterator beg = it->rows.begin();
RowList::iterator end = it->rows.end();
for (RowList::iterator rit = beg; rit != end; ++rit)
y += rit->height();
}
RowList::iterator rit = pit->rows.begin();
RowList::iterator end = pit->rows.end();
while (rit != end
&& rit->pos() < pos
&& boost::next(rit) != end
&& boost::next(rit)->pos() <= pos) {
y += rit->height();
++rit;
}
return rit;
}
// returns pointer to some fancy row 'below' specified row
RowList::iterator LyXText::cursorIRow() const
{
int y = 0;
return getRow(cursor.par(), cursor.pos(), y);
}
RowList::iterator LyXText::getRowNearY(int & y,
ParagraphList::iterator & pit) const
{
//lyxerr << "getRowNearY: y " << y << endl;
pit = ownerParagraphs().begin();
RowList::iterator rit = firstRow();
RowList::iterator rend = endRow();
for (; rit != rend; nextRow(pit, rit))
if (rit->y() > y)
break;
previousRow(pit, rit);
y = rit->y();
return rit;
}
int LyXText::getDepth() const
{
return cursor.par()->getDepth();
}
RowList::iterator LyXText::firstRow() const
{
return ownerParagraphs().front().rows.begin();
}
RowList::iterator LyXText::lastRow() const
{
return boost::prior(endRow());
}
RowList::iterator LyXText::endRow() const
{
return ownerParagraphs().back().rows.end();
}
void LyXText::nextRow(ParagraphList::iterator & pit,
RowList::iterator & rit) const
{
++rit;
if (rit == pit->rows.end()) {
++pit;
if (pit == ownerParagraphs().end())
--pit;
else
rit = pit->rows.begin();
}
}
void LyXText::previousRow(ParagraphList::iterator & pit,
RowList::iterator & rit) const
{
if (rit != pit->rows.begin())
--rit;
else {
Assert(pit != ownerParagraphs().begin());
--pit;
rit = boost::prior(pit->rows.end());
}
}
bool LyXText::noRows() const
{
return ownerParagraphs().begin()->rows.empty();
}