lyx_mirror/src/text.C
Jürgen Vigna cc3955aa12 Fixes to various bug-reports.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2402 a592a061-630c-0410-9148-cb99ea01b6c8
2001-08-01 15:42:53 +00:00

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/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1995 Matthias Ettrich
* Copyright 1995-2001 The LyX Team.
*
* ====================================================== */
#include <config.h>
#include <cstdlib>
#include <cctype>
#include <algorithm>
#include "lyxtext.h"
#include "layout.h"
#include "paragraph.h"
#include "support/textutils.h"
#include "support/LAssert.h"
#include "support/lstrings.h"
#include "insets/insetbib.h"
#include "insets/insettext.h"
#include "insets/insetspecialchar.h"
#include "lyx_gui_misc.h"
#include "gettext.h"
#include "bufferparams.h"
#include "buffer.h"
#include "debug.h"
#include "lyxrc.h"
#include "LyXView.h"
#include "Painter.h"
#include "tracer.h"
#include "font.h"
#include "encoding.h"
#include "lyxscreen.h"
#include "bufferview_funcs.h"
#include "BufferView.h"
#include "language.h"
#include "ParagraphParameters.h"
#include "undo_funcs.h"
#include "font.h"
using std::max;
using std::min;
using std::endl;
using std::pair;
namespace {
int const LYX_PAPER_MARGIN = 20;
} // namespace anon
extern int bibitemMaxWidth(BufferView *, LyXFont const &);
int LyXText::workWidth(BufferView * bview) const
{
if (inset_owner) {
return inset_owner->textWidth(bview);
}
return bview->workWidth();
}
int LyXText::getRealCursorX(BufferView * bview) const
{
int x = cursor.x();
if (the_locking_inset && (the_locking_inset->getLyXText(bview)!=this))
x = the_locking_inset->getLyXText(bview)->getRealCursorX(bview);
return x;
}
unsigned char LyXText::transformChar(unsigned char c, Paragraph * par,
Paragraph::size_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 = ' ';
for (Paragraph::size_type i = pos+1; i < par->size(); ++i)
if (!Encodings::IsComposeChar_arabic(par->getChar(i))) {
next_char = par->getChar(i);
break;
}
if (Encodings::is_arabic(next_char)) {
if (Encodings::is_arabic(prev_char))
return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
else
return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
} else {
if (Encodings::is_arabic(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(BufferView * bview, Paragraph * par,
Paragraph::size_type pos) const
{
char const c = par->getChar(pos);
return singleWidth(bview, par, pos, c);
}
int LyXText::singleWidth(BufferView * bview, Paragraph * par,
Paragraph::size_type pos, char c) const
{
LyXFont const font = getFont(bview->buffer(), par, pos);
// The most common case is handled first (Asger)
if (IsPrintable(c)) {
if (font.language()->RightToLeft()) {
if (font.language()->lang() == "arabic" &&
(lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
lyxrc.font_norm_type == LyXRC::ISO_10646_1))
if (Encodings::IsComposeChar_arabic(c))
return 0;
else
c = transformChar(c, par, pos);
else if (font.language()->lang() == "hebrew" &&
Encodings::IsComposeChar_hebrew(c))
return 0;
}
return lyxfont::width(c, font);
} else if (IsHfillChar(c)) {
return 3; /* Because of the representation
* as vertical lines */
} else if (c == Paragraph::META_INSET) {
Inset * tmpinset = par->getInset(pos);
if (tmpinset) {
#if 0 // seems not to be needed, but ...
tmpinset->update(bview, font);
#endif
return tmpinset->width(bview, font);
} else
return 0;
} else if (IsSeparatorChar(c))
c = ' ';
else if (IsNewlineChar(c))
c = 'n';
return lyxfont::width(c, font);
}
// Returns the paragraph position of the last character in the specified row
Paragraph::size_type LyXText::rowLast(Row const * row) const
{
if (row->next() == 0)
return row->par()->size() - 1;
else if (row->next()->par() != row->par())
return row->par()->size() - 1;
else
return row->next()->pos() - 1;
}
Paragraph::size_type LyXText::rowLastPrintable(Row const * row) const
{
Paragraph::size_type const last = rowLast(row);
if (last >= row->pos()
&& row->next()
&& row->next()->par() == row->par()
&& row->par()->isSeparator(last))
return last - 1;
else
return last;
}
void LyXText::computeBidiTables(Buffer const * buf, Row * row) const
{
bidi_same_direction = true;
if (!lyxrc.rtl_support) {
bidi_start = -1;
return;
}
bidi_start = row->pos();
bidi_end = rowLastPrintable(row);
if (bidi_start > bidi_end) {
bidi_start = -1;
return;
}
if (bidi_end + 2 - bidi_start >
static_cast<Paragraph::size_type>(log2vis_list.size())) {
Paragraph::size_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;
Paragraph::size_type stack[2];
bool const rtl_par =
row->par()->getParLanguage(buf->params)->RightToLeft();
int level = 0;
bool rtl = false;
bool rtl0 = false;
Paragraph::size_type const main_body =
beginningOfMainBody(buf, row->par());
for (Paragraph::size_type lpos = bidi_start;
lpos <= bidi_end; ++lpos) {
bool is_space = row->par()->isLineSeparator(lpos);
Paragraph::size_type const pos =
(is_space && lpos + 1 <= bidi_end &&
!row->par()->isLineSeparator(lpos + 1) &&
!row->par()->isNewline(lpos + 1))
? lpos + 1 : lpos;
LyXFont font = row->par()->getFontSettings(buf->params, pos);
if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
font.number() == LyXFont::ON &&
row->par()->getFontSettings(buf->params, lpos-1).number()
== LyXFont::ON) {
font = row->par()->getFontSettings(buf->params, lpos);
is_space = false;
}
bool new_rtl = font.isVisibleRightToLeft();
bool new_rtl0 = font.isRightToLeft();
int new_level;
if (lpos == main_body - 1
&& row->pos() < main_body - 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) {
Paragraph::size_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) {
Paragraph::size_type const old_lpos = stack[--level];
int delta = bidi_end - old_lpos;
if (level % 2)
delta = -delta;
log2vis_list[old_lpos - bidi_start] += delta;
}
Paragraph::size_type vpos = bidi_start - 1;
for (Paragraph::size_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 * par,
Paragraph::size_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 * par,
Paragraph::size_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;
}
void LyXText::draw(BufferView * bview, Row const * row,
Paragraph::size_type & vpos,
int offset, float & x, bool cleared)
{
Painter & pain = bview->painter();
Paragraph::size_type pos = vis2log(vpos);
char c = row->par()->getChar(pos);
float tmpx = x;
if (IsNewlineChar(c)) {
++vpos;
// Draw end-of-line marker
LyXFont const font = getFont(bview->buffer(), row->par(), pos);
int const wid = lyxfont::width('n', font);
int const asc = lyxfont::maxAscent(font);
int const y = offset + row->baseline();
int xp[3];
int yp[3];
if (bidi_level(pos) % 2 == 0) {
xp[0] = int(x + wid * 0.375);
yp[0] = int(y - 0.875 * asc * 0.75);
xp[1] = int(x);
yp[1] = int(y - 0.500 * asc * 0.75);
xp[2] = int(x + wid * 0.375);
yp[2] = int(y - 0.125 * asc * 0.75);
pain.lines(xp, yp, 3, LColor::eolmarker);
xp[0] = int(x);
yp[0] = int(y - 0.500 * asc * 0.75);
xp[1] = int(x + wid);
yp[1] = int(y - 0.500 * asc * 0.75);
xp[2] = int(x + wid);
yp[2] = int(y - asc * 0.75);
pain.lines(xp, yp, 3, LColor::eolmarker);
} else {
xp[0] = int(x + wid * 0.625);
yp[0] = int(y - 0.875 * asc * 0.75);
xp[1] = int(x + wid);
yp[1] = int(y - 0.500 * asc * 0.75);
xp[2] = int(x + wid * 0.625);
yp[2] = int(y - 0.125 * asc * 0.75);
pain.lines(xp, yp, 3, LColor::eolmarker);
xp[0] = int(x + wid);
yp[0] = int(y - 0.500 * asc * 0.75);
xp[1] = int(x);
yp[1] = int(y - 0.500 * asc * 0.75);
xp[2] = int(x);
yp[2] = int(y - asc * 0.75);
pain.lines(xp, yp, 3, LColor::eolmarker);
}
x += wid;
return;
}
LyXFont font = getFont(bview->buffer(), row->par(), pos);
LyXFont font2 = font;
if (c == Paragraph::META_INSET) {
Inset * tmpinset = row->par()->getInset(pos);
if (tmpinset) {
tmpinset->update(bview, font, false);
tmpinset->draw(bview, font, offset+row->baseline(), x,
cleared);
#ifdef SEEMS_TO_BE_NOT_NEEDED
if (status_ == CHANGED_IN_DRAW) {
UpdateInset(bview, tmpinset);
status(bview, CHANGED_IN_DRAW);
}
#endif
}
++vpos;
if (lyxrc.mark_foreign_language &&
font.language() != ignore_language &&
font.language() != bview->buffer()->params.language) {
int const y = offset + row->height() - 1;
pain.line(int(tmpx), y, int(x), y, LColor::language);
}
return;
}
/* usual characters, no insets */
// Collect character that we can draw in one command
// This is dirty, but fast. Notice that it will never be too small.
// For the record, I'll note that Microsoft Word has a limit
// of 768 here. We have none :-) (Asger)
// Ok. I am the first to admit that the use of std::string will be
// a tiny bit slower than using a POD char array. However, I claim
// that this slowdown is so small that it is close to inperceptive.
// So IMHO we should go with the easier and clearer implementation.
// And even if 1024 is a large number here it might overflow, string
// will only overflow if the machine is out of memory...
static string textstring;
textstring = c;
++vpos;
Paragraph::size_type const last = rowLastPrintable(row);
if (font.language()->lang() == "hebrew") {
if (Encodings::IsComposeChar_hebrew(c)) {
int const width = lyxfont::width(c, font2);
int dx = 0;
for (Paragraph::size_type i = pos-1; i >= 0; --i) {
c = row->par()->getChar(i);
if (!Encodings::IsComposeChar_hebrew(c)) {
if (IsPrintableNonspace(c)) {
int const width2 =
singleWidth(bview,
row->par(),
i, c);
dx = (c == '<EFBFBD>' || c == '<EFBFBD>') // dalet / resh
? width2 - width : (width2 - width) / 2;
}
break;
}
}
// Draw nikud
pain.text(int(x) + dx, offset + row->baseline(),
textstring, font);
} else {
while (vpos <= last &&
(pos = vis2log(vpos)) >= 0
&& IsPrintableNonspace(c = row->par()->getChar(pos))
&& !Encodings::IsComposeChar_hebrew(c)
&& font2 == getFont(bview->buffer(), row->par(), pos)) {
textstring += c;
++vpos;
}
// Draw text and set the new x position
pain.text(int(x), offset + row->baseline(),
textstring, font);
x += lyxfont::width(textstring, font);
}
} else if (font.language()->lang() == "arabic" &&
(lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
lyxrc.font_norm_type == LyXRC::ISO_10646_1)) {
if (Encodings::IsComposeChar_arabic(c)) {
c = transformChar(c, row->par(), pos);
textstring = c;
int const width = lyxfont::width(c, font2);
int dx = 0;
for (Paragraph::size_type i = pos-1; i >= 0; --i) {
c = row->par()->getChar(i);
if (!Encodings::IsComposeChar_arabic(c)) {
if (IsPrintableNonspace(c)) {
int const width2 =
singleWidth(bview,
row->par(),
i, c);
dx = (width2 - width) / 2;
}
break;
}
}
// Draw nikud
pain.text(int(x) + dx, offset + row->baseline(),
textstring, font);
} else {
textstring = transformChar(c, row->par(), pos);
while (vpos <= last &&
(pos = vis2log(vpos)) >= 0
&& IsPrintableNonspace(c = row->par()->getChar(pos))
&& !Encodings::IsComposeChar_arabic(c)
&& font2 == getFont(bview->buffer(), row->par(), pos)) {
c = transformChar(c, row->par(), pos);
textstring += c;
++vpos;
}
// Draw text and set the new x position
pain.text(int(x), offset + row->baseline(),
textstring, font);
x += lyxfont::width(textstring, font);
}
} else {
while (vpos <= last &&
(pos = vis2log(vpos)) >= 0
&& IsPrintableNonspace(c = row->par()->getChar(pos))
&& font2 == getFont(bview->buffer(), row->par(), pos)) {
textstring += c;
++vpos;
}
// Draw text and set the new x position
pain.text(int(x), offset + row->baseline(), textstring, font);
x += lyxfont::width(textstring, font);
}
#ifdef WITH_WARNINGS
if ((font.language() == inherit_language) ||
(font.language() == ignore_language))
lyxerr << "No this shouldn't happen!\n";
#endif
if (lyxrc.mark_foreign_language &&
font.language() != bview->buffer()->params.language) {
int const y = offset + row->height() - 1;
pain.line(int(tmpx), y, int(x), y,
LColor::language);
}
// If we want ulem.sty support, drawing
// routines should go here. (Asger)
// Why shouldn't LyXFont::drawText handle it internally?
}
// Returns the left beginning of the text.
// This information cannot be taken from the layouts-objekt, because in
// LaTeX the beginning of the text fits in some cases (for example sections)
// exactly the label-width.
int LyXText::leftMargin(BufferView * bview, Row const * row) const
{
LyXLayout const & layout =
textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout());
string parindent = layout.parindent;
int x = LYX_PAPER_MARGIN;
x += lyxfont::signedWidth(textclasslist
.TextClass(bview->buffer()->params.textclass)
.leftmargin(),
textclasslist
.TextClass(bview->buffer()->params.textclass)
.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 (!row->par()->getDepth()) {
if (!row->par()->getLayout()) {
// find the previous same level paragraph
if (row->par()->previous()) {
Paragraph * newpar = row->par()
->depthHook(row->par()->getDepth());
if (newpar &&
textclasslist.Style(bview->buffer()->params.textclass,
newpar->getLayout())
.nextnoindent)
parindent.erase();
}
}
} else {
// find the next level paragraph
Paragraph * newpar =
row->par()->outerHook();
// make a corresponding row. Needed to call LeftMargin()
// check wether it is a sufficent paragraph
if (newpar
&& textclasslist
.Style(bview->buffer()->params.textclass,
newpar->getLayout()).isEnvironment()) {
Row dummyrow;
dummyrow.par(newpar);
dummyrow.pos(newpar->size());
x = leftMargin(bview, &dummyrow);
} else {
// this is no longer an error, because this function
// is used to clear impossible depths after changing
// a layout. Since there is always a redo,
// LeftMargin() is always called
row->par()->params().depth(0);
}
if (newpar && !row->par()->getLayout()) {
if (newpar->params().noindent())
parindent.erase();
else
parindent = textclasslist
.Style(bview->buffer()->params.textclass,
newpar->getLayout()).parindent;
}
}
LyXFont const labelfont = getFont(bview->buffer(), row->par(), -2);
switch (layout.margintype) {
case MARGIN_DYNAMIC:
if (!layout.leftmargin.empty()) {
x += lyxfont::signedWidth(layout.leftmargin,
textclasslist
.TextClass(bview->buffer()->params.
textclass)
.defaultfont());
}
if (!row->par()->getLabelstring().empty()) {
x += lyxfont::signedWidth(layout.labelindent,
labelfont);
x += lyxfont::width(row->par()->getLabelstring(),
labelfont);
x += lyxfont::width(layout.labelsep, labelfont);
}
break;
case MARGIN_MANUAL:
x += lyxfont::signedWidth(layout.labelindent, labelfont);
if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
if (!row->par()->getLabelWidthString().empty()) {
x += lyxfont::width(row->par()->getLabelWidthString(),
labelfont);
x += lyxfont::width(layout.labelsep, labelfont);
}
}
break;
case MARGIN_STATIC:
x += lyxfont::signedWidth(layout.leftmargin, textclasslist.TextClass(bview->buffer()->params.textclass).defaultfont()) * 4
/ (row->par()->getDepth() + 4);
break;
case MARGIN_FIRST_DYNAMIC:
if (layout.labeltype == LABEL_MANUAL) {
if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
x += lyxfont::signedWidth(layout.leftmargin,
labelfont);
} else {
x += lyxfont::signedWidth(layout.labelindent,
labelfont);
}
} else if (row->pos()
// Special case to fix problems with
// theorems (JMarc)
|| (layout.labeltype == LABEL_STATIC
&& layout.latextype == LATEX_ENVIRONMENT
&& ! row->par()->isFirstInSequence())) {
x += lyxfont::signedWidth(layout.leftmargin,
labelfont);
} else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
&& layout.labeltype != LABEL_BIBLIO
&& layout.labeltype !=
LABEL_CENTERED_TOP_ENVIRONMENT) {
x += lyxfont::signedWidth(layout.labelindent,
labelfont);
x += lyxfont::width(layout.labelsep, labelfont);
x += lyxfont::width(row->par()->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
Row const * tmprow = row;
while (tmprow->previous()
&& tmprow->previous()->par() == row->par())
tmprow = tmprow->previous();
int minfill = tmprow->fill();
while (tmprow->next() && tmprow->next()->par() == row->par()) {
tmprow = tmprow->next();
if (tmprow->fill() < minfill)
minfill = tmprow->fill();
}
x += lyxfont::signedWidth(layout.leftmargin,
textclasslist
.TextClass(bview->buffer()->params.textclass)
.defaultfont());
x += minfill;
}
break;
}
int align; // wrong type
if (row->par()->params().align() == LYX_ALIGN_LAYOUT)
align = layout.align;
else
align = row->par()->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
&& ! row->par()->isFirstInSequence()))
&& align == LYX_ALIGN_BLOCK
&& !row->par()->params().noindent()
&& (row->par()->layout ||
bview->buffer()->params.paragraph_separation ==
BufferParams::PARSEP_INDENT))
x += lyxfont::signedWidth(parindent,
textclasslist
.TextClass(bview->buffer()->params
.textclass)
.defaultfont());
else if (layout.labeltype == LABEL_BIBLIO) {
// ale970405 Right width for bibitems
x += bibitemMaxWidth(bview,textclasslist
.TextClass(bview->buffer()->params
.textclass)
.defaultfont());
}
}
return x;
}
int LyXText::rightMargin(Buffer const * buf, Row const * row) const
{
LyXLayout const & layout =
textclasslist.Style(buf->params.textclass,
row->par()->getLayout());
int x = LYX_PAPER_MARGIN
+ lyxfont::signedWidth(textclasslist
.TextClass(buf->params.textclass)
.rightmargin(),
textclasslist
.TextClass(buf->params.textclass)
.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 (row->par()->getDepth()) {
// find the next level paragraph
Paragraph * newpar = row->par();
do {
newpar = newpar->previous();
} while (newpar
&& newpar->getDepth() >= row->par()->getDepth());
// make a corresponding row. Needed to call LeftMargin()
// check wether it is a sufficent paragraph
if (newpar
&& textclasslist.Style(buf->params.textclass,
newpar->getLayout())
.isEnvironment()) {
Row dummyrow;
dummyrow.par(newpar);
dummyrow.pos(0);
x = rightMargin(buf, &dummyrow);
} else {
// this is no longer an error, because this function
// is used to clear impossible depths after changing
// a layout. Since there is always a redo,
// LeftMargin() is always called
row->par()->params().depth(0);
}
}
//lyxerr << "rightmargin: " << layout->rightmargin << endl;
x += lyxfont::signedWidth(layout.rightmargin, textclasslist
.TextClass(buf->params.textclass)
.defaultfont()) * 4 / (row->par()->getDepth()
+ 4);
return x;
}
int LyXText::labelEnd(BufferView * bview, Row const * row) const
{
if (textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout()).margintype
== MARGIN_MANUAL) {
Row tmprow;
tmprow = *row;
tmprow.pos(row->par()->size());
return leftMargin(bview, &tmprow); /* just the beginning
of the main body */
} else
return 0; /* LabelEnd is only needed, if the
layout fills a flushleft
label. */
}
// get the next breakpoint in a given paragraph
Paragraph::size_type
LyXText::nextBreakPoint(BufferView * bview, Row const * row, int width) const
{
Paragraph * par = row->par();
if (width < 0)
return par->size();
Paragraph::size_type const pos = row->pos();
// position of the last possible breakpoint
// -1 isn't a suitable value, but a flag
Paragraph::size_type last_separator = -1;
width -= rightMargin(bview->buffer(), row);
Paragraph::size_type const main_body =
beginningOfMainBody(bview->buffer(), par);
LyXLayout const & layout =
textclasslist.Style(bview->buffer()->params.textclass, par->getLayout());
Paragraph::size_type i = pos;
if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
/* special code for right address boxes, only newlines count */
while (i < par->size()) {
if (par->isNewline(i)) {
last_separator = i;
i = par->size() - 1; // this means break
//x = width;
} else if (par->getChar(i) == Paragraph::META_INSET &&
par->getInset(i) && par->getInset(i)->display()){
par->getInset(i)->display(false);
}
++i;
}
} else {
// Last position is an invariant
Paragraph::size_type const last =
par->size();
// this is the usual handling
int x = leftMargin(bview, row);
bool doitonetime = true;
while (doitonetime || ((x < width) && (i < last))) {
doitonetime = false;
char const c = par->getChar(i);
if (IsNewlineChar(c)) {
last_separator = i;
x = width; // this means break
} else if (c == Paragraph::META_INSET &&
par->getInset(i)) {
// check wether a Display() inset is
// valid here. if not, change it to
// non-display
if (par->getInset(i)->display() &&
(layout.isCommand() ||
(layout.labeltype == LABEL_MANUAL
&& i < beginningOfMainBody(bview->buffer(), par)))) {
// display istn't allowd
par->getInset(i)->display(false);
x += singleWidth(bview, par, i, c);
} else if (par->getInset(i)->display() ||
par->getInset(i)->needFullRow()) {
// So break the line here
if (i == pos) {
if (pos < last-1) {
last_separator = i;
if (IsLineSeparatorChar(par->getChar(i+1)))
++last_separator;
} else
last_separator = last; // to avoid extra rows
} else
last_separator = i - 1;
x = width; // this means break
} else {
x += singleWidth(bview, par, i, c);
}
} else {
if (IsLineSeparatorChar(c))
last_separator = i;
x += singleWidth(bview, par, i, c);
}
++i;
if (i == main_body) {
x += lyxfont::width(layout.labelsep,
getFont(bview->buffer(), par, -2));
if (par->isLineSeparator(i - 1))
x-= singleWidth(bview, par, i - 1);
int left_margin = labelEnd(bview, row);
if (x < left_margin)
x = left_margin;
}
}
// end of paragraph is always a suitable separator
if (i == last && x < width)
last_separator = i;
}
// well, if last_separator is still 0, the line isn't breakable.
// don't care and cut simply at the end
if (last_separator < 0) {
last_separator = i;
}
// manual labels cannot be broken in LaTeX, do not care
if (main_body && last_separator < main_body)
last_separator = main_body - 1;
return last_separator;
}
// returns the minimum space a row needs on the screen in pixel
int LyXText::fill(BufferView * bview, Row * row, int paper_width) const
{
if (paper_width < 0)
return 20;
int w;
// get the pure distance
Paragraph::size_type const last = rowLastPrintable(row);
// special handling of the right address boxes
if (textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout()).margintype
== MARGIN_RIGHT_ADDRESS_BOX) {
int const tmpfill = row->fill();
row->fill(0); // the minfill in MarginLeft()
w = leftMargin(bview, row);
row->fill(tmpfill);
} else
w = leftMargin(bview, row);
LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout());
Paragraph::size_type const main_body =
beginningOfMainBody(bview->buffer(), row->par());
Paragraph::size_type i = row->pos();
while (i <= last) {
if (main_body > 0 && i == main_body) {
w += lyxfont::width(layout.labelsep, getFont(bview->buffer(), row->par(), -2));
if (row->par()->isLineSeparator(i - 1))
w -= singleWidth(bview, row->par(), i - 1);
int left_margin = labelEnd(bview, row);
if (w < left_margin)
w = left_margin;
}
w += singleWidth(bview, row->par(), i);
++i;
}
if (main_body > 0 && main_body > last) {
w += lyxfont::width(layout.labelsep, getFont(bview->buffer(), row->par(), -2));
if (last >= 0 && row->par()->isLineSeparator(last))
w -= singleWidth(bview, row->par(), last);
int const left_margin = labelEnd(bview, row);
if (w < left_margin)
w = left_margin;
}
int const fill = paper_width - w - rightMargin(bview->buffer(), row);
#ifdef WITH_WARNINGS
#warning Please fix me (Jug!)
#endif
#if 0
if (fill < 0)
return 0;
#endif
return fill;
}
// returns the minimum space a manual label needs on the screen in pixel
int LyXText::labelFill(BufferView * bview, Row const * row) const
{
Paragraph::size_type last = beginningOfMainBody(bview->buffer(), row->par()) - 1;
// -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.
// I don't understand this code in depth, but sometimes "last" is
// less than 0 and this causes a crash. This fix seems to work
// correctly, but I bet the real error is elsewhere. The bug is
// triggered when you have an open footnote in a paragraph
// environment with a manual label. (Asger)
if (last < 0) last = 0;
if (row->par()->isLineSeparator(last)) /* a sepearator at this end
does not count */
--last;
int w = 0;
int i = row->pos();
while (i <= last) {
w += singleWidth(bview, row->par(), i);
++i;
}
int fill = 0;
if (!row->par()->params().labelWidthString().empty()) {
fill = max(lyxfont::width(row->par()->params().labelWidthString(),
getFont(bview->buffer(), row->par(), -2)) - w,
0);
}
return fill;
}
// returns the number of separators in the specified row. The separator
// on the very last column doesnt count
int LyXText::numberOfSeparators(Buffer const * buf, Row const * row) const
{
Paragraph::size_type const last = rowLast(row);
Paragraph::size_type p =
max(row->pos(), beginningOfMainBody(buf, row->par()));
int n = 0;
for (; p < last; ++p) {
if (row->par()->isSeparator(p)) {
++n;
}
}
return n;
}
// returns the number of hfills in the specified row. The LyX-Hfill is
// a LaTeX \hfill so that the hfills at the beginning and at the end were
// ignored. This is *MUCH* more usefull than not to ignore!
int LyXText::numberOfHfills(Buffer const * buf, Row const * row) const
{
Paragraph::size_type const last = rowLast(row);
Paragraph::size_type first = row->pos();
if (first) { /* hfill *DO* count at the beginning
* of paragraphs! */
while(first <= last && row->par()->isHfill(first))
++first;
}
first = max(first, beginningOfMainBody(buf, row->par()));
int n = 0;
for (int p = first; p <= last; ++p) { // last, because the end is ignored!
if (row->par()->isHfill(p)) {
++n;
}
}
return n;
}
// like NumberOfHfills, but only those in the manual label!
int LyXText::numberOfLabelHfills(Buffer const * buf, Row const * row) const
{
Paragraph::size_type last = rowLast(row);
Paragraph::size_type first = row->pos();
if (first) { /* hfill *DO* count at the beginning
* of paragraphs! */
while(first < last && row->par()->isHfill(first))
++first;
}
last = min(last, beginningOfMainBody(buf, row->par()));
int n = 0;
for (Paragraph::size_type p = first;
p < last; ++p) { // last, because the end is ignored!
if (row->par()->isHfill(p)) {
++n;
}
}
return n;
}
// returns true, if a expansion is needed.
// Rules are given by LaTeX
bool LyXText::hfillExpansion(Buffer const * buf, Row const * row_ptr,
Paragraph::size_type pos) const
{
// by the way, is it a hfill?
if (!row_ptr->par()->isHfill(pos))
return false;
// at the end of a row it does not count
if (pos >= rowLast(row_ptr))
return false;
// at the beginning of a row it does not count, if it is not
// the first row of a paragaph
if (!row_ptr->pos())
return true;
// in some labels it does not count
if (textclasslist.Style(buf->params.textclass,
row_ptr->par()->getLayout()).margintype
!= MARGIN_MANUAL
&& pos < beginningOfMainBody(buf, row_ptr->par()))
return false;
// if there is anything between the first char of the row and
// the sepcified position that is not a newline and not a hfill,
// the hfill will count, otherwise not
Paragraph::size_type i = row_ptr->pos();
while (i < pos && (row_ptr->par()->isNewline(i)
|| row_ptr->par()->isHfill(i)))
++i;
return i != pos;
}
LColor::color LyXText::backgroundColor()
{
if (inset_owner)
return inset_owner->backgroundColor();
else
return LColor::background;
}
void LyXText::setHeightOfRow(BufferView * bview, Row * row_ptr) const
{
/* get the maximum ascent and the maximum descent */
int asc = 0;
int desc = 0;
float layoutasc = 0;
float layoutdesc = 0;
float tmptop = 0;
LyXFont tmpfont;
Inset * tmpinset = 0;
/* this must not happen before the currentrow for clear reasons.
so the trick is just to set the current row onto this row */
int unused_y;
getRow(row_ptr->par(), row_ptr->pos(), unused_y);
/* ok , let us initialize the maxasc and maxdesc value.
* This depends in LaTeX of the font of the last character
* in the paragraph. The hack below is necessary because
* of the possibility of open footnotes */
/* Correction: only the fontsize count. The other properties
are taken from the layoutfont. Nicer on the screen :) */
Paragraph * par = row_ptr->par();
Paragraph * firstpar = row_ptr->par();
LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
firstpar->getLayout());
// as max get the first character of this row then it can increes but not
// decrees the height. Just some point to start with so we don't have to
// do the assignment below too often.
LyXFont font = getFont(bview->buffer(), par, row_ptr->pos());
LyXFont::FONT_SIZE const tmpsize = font.size();
font = getFont(bview->buffer(), par, -1);
LyXFont::FONT_SIZE const size = font.size();
font.setSize(tmpsize);
LyXFont labelfont = getFont(bview->buffer(), par, -2);
float spacing_val = 1.0;
if (!row_ptr->par()->params().spacing().isDefault()) {
spacing_val = row_ptr->par()->params().spacing().getValue();
} else {
spacing_val = bview->buffer()->params.spacing.getValue();
}
//lyxerr << "spacing_val = " << spacing_val << endl;
int maxasc = int(lyxfont::maxAscent(font) *
layout.spacing.getValue() *
spacing_val);
int maxdesc = int(lyxfont::maxDescent(font) *
layout.spacing.getValue() *
spacing_val);
int const pos_end = rowLast(row_ptr);
int labeladdon = 0;
int maxwidth = 0;
// Check if any insets are larger
for (int pos = row_ptr->pos(); pos <= pos_end; ++pos) {
if (row_ptr->par()->getChar(pos) == Paragraph::META_INSET) {
tmpfont = getFont(bview->buffer(), row_ptr->par(), pos);
tmpinset = row_ptr->par()->getInset(pos);
if (tmpinset) {
#if 1 // this is needed for deep update on initialitation
tmpinset->update(bview, tmpfont);
#endif
asc = tmpinset->ascent(bview, tmpfont);
desc = tmpinset->descent(bview, tmpfont);
maxwidth += tmpinset->width(bview, tmpfont);
maxasc = max(maxasc, asc);
maxdesc = max(maxdesc, desc);
}
} else {
maxwidth += singleWidth(bview, row_ptr->par(), pos);
}
}
// 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 =
row_ptr->par()->highestFontInRange(row_ptr->pos(), pos_end, size);
if (maxsize > font.size()) {
font.setSize(maxsize);
asc = lyxfont::maxAscent(font);
desc = lyxfont::maxDescent(font);
if (asc > maxasc)
maxasc = asc;
if (desc > maxdesc)
maxdesc = desc;
}
// This is nicer with box insets:
++maxasc;
++maxdesc;
row_ptr->ascent_of_text(maxasc);
// is it a top line?
if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
// some parksips VERY EASY IMPLEMENTATION
if (bview->buffer()->params.paragraph_separation ==
BufferParams::PARSEP_SKIP)
{
if (layout.isParagraph()
&& firstpar->getDepth() == 0
&& firstpar->previous())
{
maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
} else if (firstpar->previous() &&
textclasslist.Style(bview->buffer()->params.textclass,
firstpar->previous()->
getLayout()).isParagraph() &&
firstpar->previous()->getDepth() == 0)
{
// is it right to use defskip here too? (AS)
maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
}
}
// the paper margins
if (!row_ptr->par()->previous() && bv_owner)
maxasc += LYX_PAPER_MARGIN;
// add the vertical spaces, that the user added
if (firstpar->params().spaceTop().kind() != VSpace::NONE)
maxasc += int(firstpar->params().spaceTop().inPixels(bview));
// do not forget the DTP-lines!
// there height depends on the font of the nearest character
if (firstpar->params().lineTop())
maxasc += 2 * lyxfont::ascent('x', getFont(bview->buffer(),
firstpar, 0));
// and now the pagebreaks
if (firstpar->params().pagebreakTop())
maxasc += 3 * defaultHeight();
// 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
&& bview->buffer()->params.secnumdepth >= 0)
{
float spacing_val = 1.0;
if (!row_ptr->par()->params().spacing().isDefault()) {
spacing_val = row_ptr->par()->params().spacing().getValue();
} else {
spacing_val = bview->buffer()->params.spacing.getValue();
}
labeladdon = int(lyxfont::maxDescent(labelfont) *
layout.spacing.getValue() *
spacing_val)
+ int(lyxfont::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)
&& row_ptr->par()->isFirstInSequence()
&& !row_ptr->par()->getLabelstring().empty())
{
float spacing_val = 1.0;
if (!row_ptr->par()->params().spacing().isDefault()) {
spacing_val = row_ptr->par()->params().spacing().getValue();
} else {
spacing_val = bview->buffer()->params.spacing.getValue();
}
labeladdon = int(
(lyxfont::maxAscent(labelfont) *
layout.spacing.getValue() *
spacing_val)
+(lyxfont::maxDescent(labelfont) *
layout.spacing.getValue() *
spacing_val)
+ layout.topsep * defaultHeight()
+ layout.labelbottomsep * defaultHeight());
}
// and now the layout spaces, for example before and after a section,
// or between the items of a itemize or enumerate environment
if (!firstpar->params().pagebreakTop()) {
Paragraph * prev = row_ptr->par()->previous();
if (prev)
prev = row_ptr->par()->depthHook(row_ptr->par()->getDepth());
if (prev && prev->getLayout() == firstpar->getLayout() &&
prev->getDepth() == firstpar->getDepth() &&
prev->getLabelWidthString() == firstpar->getLabelWidthString())
{
layoutasc = (layout.itemsep * defaultHeight());
} else if (row_ptr->previous()) {
tmptop = layout.topsep;
if (row_ptr->previous()->par()->getDepth() >= row_ptr->par()->getDepth())
tmptop -= textclasslist.Style(bview->buffer()->params.textclass,
row_ptr->previous()->par()->
getLayout()).bottomsep;
if (tmptop > 0)
layoutasc = (tmptop * defaultHeight());
} else if (row_ptr->par()->params().lineTop()) {
tmptop = layout.topsep;
if (tmptop > 0)
layoutasc = (tmptop * defaultHeight());
}
prev = row_ptr->par()->outerHook();
if (prev) {
maxasc += int(textclasslist.Style(bview->buffer()->params.textclass,
prev->getLayout()).parsep * defaultHeight());
} else {
if (firstpar->previous() &&
firstpar->previous()->getDepth() == 0 &&
firstpar->previous()->getLayout() !=
firstpar->getLayout())
{
// avoid parsep
} else if (firstpar->previous()) {
maxasc += int(layout.parsep * defaultHeight());
}
}
}
}
// is it a bottom line?
if (row_ptr->par() == par
&& (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par()))
{
// the paper margins
if (!par->next() && bv_owner)
maxdesc += LYX_PAPER_MARGIN;
// add the vertical spaces, that the user added
if (firstpar->params().spaceBottom().kind() != VSpace::NONE)
maxdesc += int(firstpar->params().spaceBottom().inPixels(bview));
// do not forget the DTP-lines!
// there height depends on the font of the nearest character
if (firstpar->params().lineBottom())
maxdesc += 2 * lyxfont::ascent('x',
getFont(bview->buffer(),
par, par->size() - 1));
// and now the pagebreaks
if (firstpar->params().pagebreakBottom())
maxdesc += 3 * defaultHeight();
// and now the layout spaces, for example before and after
// a section, or between the items of a itemize or enumerate
// environment
if (!firstpar->params().pagebreakBottom() && row_ptr->par()->next()) {
Paragraph * nextpar = row_ptr->par()->next();
Paragraph * comparepar = row_ptr->par();
float usual = 0;
float unusual = 0;
if (comparepar->getDepth() > nextpar->getDepth()) {
usual = (textclasslist.Style(bview->buffer()->params.textclass,
comparepar->getLayout()).bottomsep * defaultHeight());
comparepar = comparepar->depthHook(nextpar->getDepth());
if (comparepar->getLayout()!= nextpar->getLayout()
|| nextpar->getLabelWidthString() !=
comparepar->getLabelWidthString())
{
unusual = (textclasslist.Style(bview->buffer()->params.textclass,
comparepar->getLayout()).bottomsep * defaultHeight());
}
if (unusual > usual)
layoutdesc = unusual;
else
layoutdesc = usual;
} else if (comparepar->getDepth() == nextpar->getDepth()) {
if (comparepar->getLayout()!= nextpar->getLayout()
|| nextpar->getLabelWidthString() !=
comparepar->getLabelWidthString())
layoutdesc = int(textclasslist.Style(bview->buffer()->params.textclass,
comparepar->getLayout()).bottomsep * defaultHeight());
}
}
}
// incalculate the layout spaces
maxasc += int(layoutasc * 2 / (2 + firstpar->getDepth()));
maxdesc += int(layoutdesc * 2 / (2 + firstpar->getDepth()));
// calculate the new height of the text
height -= row_ptr->height();
row_ptr->height(maxasc + maxdesc + labeladdon);
row_ptr->baseline(maxasc + labeladdon);
height += row_ptr->height();
float x;
float dummy;
prepareToPrint(bview, row_ptr, x, dummy, dummy, dummy, false);
row_ptr->width(int(maxwidth + x));
if (inset_owner) {
Row * r = firstrow;
width = max(0,workWidth(bview));
while(r) {
if (r->width() > width)
width = r->width();
r = r->next();
}
}
}
/* Appends the implicit specified paragraph behind the specified row,
* start at the implicit given position */
void LyXText::appendParagraph(BufferView * bview, Row * row) const
{
bool not_ready = true;
// The last character position of a paragraph is an invariant so we can
// safely get it here. (Asger)
int const lastposition = row->par()->size();
do {
// Get the next breakpoint
int z = nextBreakPoint(bview, row, workWidth(bview));
Row * tmprow = row;
// Insert the new row
if (z < lastposition) {
++z;
insertRow(row, row->par(), z);
row = row->next();
row->height(0);
} else
not_ready = false;
// Set the dimensions of the row
#ifdef WITH_WARNINGS
#warning Something is rotten here! (Jug)
#endif
tmprow->fill(fill(bview, tmprow, workWidth(bview)));
setHeightOfRow(bview, tmprow);
} while (not_ready);
}
void LyXText::breakAgain(BufferView * bview, Row * row) const
{
bool not_ready = true;
do {
// get the next breakpoint
Paragraph::size_type z = nextBreakPoint(bview, row, workWidth(bview));
Row * tmprow = row;
if (z < row->par()->size()) {
if (!row->next() || (row->next() && row->next()->par() != row->par())) {
// insert a new row
++z;
insertRow(row, row->par(), z);
row = row->next();
row->height(0);
} else {
row = row->next();
++z;
if (row->pos() == z)
not_ready = false; // the rest will not change
else {
row->pos(z);
}
}
} else {
/* if there are some rows too much, delete them */
/* only if you broke the whole paragraph! */
Row * tmprow2 = row;
while (tmprow2->next() && tmprow2->next()->par() == row->par()) {
tmprow2 = tmprow2->next();
}
while (tmprow2 != row) {
tmprow2 = tmprow2->previous();
removeRow(tmprow2->next());
}
not_ready = false;
}
/* set the dimensions of the row */
tmprow->fill(fill(bview, tmprow, workWidth(bview)));
setHeightOfRow(bview, tmprow);
} while (not_ready);
}
// this is just a little changed version of break again
void LyXText::breakAgainOneRow(BufferView * bview, Row * row)
{
// get the next breakpoint
Paragraph::size_type z = nextBreakPoint(bview, row, workWidth(bview));
Row * tmprow = row;
if (z < row->par()->size()) {
if (!row->next()
|| (row->next() && row->next()->par() != row->par())) {
/* insert a new row */
++z;
insertRow(row, row->par(), z);
row = row->next();
row->height(0);
} else {
row= row->next();
++z;
if (row->pos() != z)
row->pos(z);
}
} else {
// if there are some rows too much, delete them
// only if you broke the whole paragraph!
Row * tmprow2 = row;
while (tmprow2->next()
&& tmprow2->next()->par() == row->par()) {
tmprow2 = tmprow2->next();
}
while (tmprow2 != row) {
tmprow2 = tmprow2->previous();
removeRow(tmprow2->next());
}
}
// set the dimensions of the row
tmprow->fill(fill(bview, tmprow, workWidth(bview)));
setHeightOfRow(bview, tmprow);
}
void LyXText::breakParagraph(BufferView * bview, char keep_layout)
{
LyXLayout const & layout =
textclasslist.Style(bview->buffer()->params.textclass,
cursor.par()->getLayout());
// this is only allowed, if the current paragraph is not empty or caption
if ((cursor.par()->size() <= 0)
&& layout.labeltype!= LABEL_SENSITIVE)
return;
setUndo(bview, Undo::INSERT,cursor.par(),cursor.par()->next());
// 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());
// cursor.pos(cursor.pos() + 1);
// break the paragraph
if (keep_layout)
keep_layout = 2;
else
keep_layout = layout.isEnvironment();
cursor.par()->breakParagraph(bview->buffer()->params, cursor.pos(),
keep_layout);
// 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()->setLayout(0);
else
// set to standard-layout
cursor.par()->next()->setLayout(0);
}
/* 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() && !cursor.row()->par()->isNewline(cursor.row()->pos() - 1)
&& cursor.row()->pos() == cursor.pos()) {
cursorLeft(bview);
}
status(bview, LyXText::NEED_MORE_REFRESH);
refresh_row = cursor.row();
refresh_y = cursor.y() - cursor.row()->baseline();
// Do not forget the special right address boxes
if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
while (refresh_row->previous() &&
refresh_row->previous()->par() == refresh_row->par()) {
refresh_row = refresh_row->previous();
refresh_y -= refresh_row->height();
}
}
removeParagraph(cursor.row());
// set the dimensions of the cursor row
cursor.row()->fill(fill(bview, cursor.row(), workWidth(bview)));
setHeightOfRow(bview, cursor.row());
while (cursor.par()->next()->size()
&& cursor.par()->next()->isNewline(0))
cursor.par()->next()->erase(0);
insertParagraph(bview, cursor.par()->next(), cursor.row());
updateCounters(bview, cursor.row()->previous());
/* This check is necessary. Otherwise the new empty paragraph will
* be deleted automatically. And it is more friendly for the user! */
if (cursor.pos())
setCursor(bview, cursor.par()->next(), 0);
else
setCursor(bview, cursor.par(), 0);
if (cursor.row()->next())
breakAgain(bview, cursor.row()->next());
need_break_row = 0;
}
// Just a macro to make some thing easier.
void LyXText::redoParagraph(BufferView * bview) const
{
clearSelection();
redoParagraphs(bview, cursor, cursor.par()->next());
setCursorIntern(bview, 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(BufferView * bview, char c)
{
setUndo(bview, Undo::INSERT,
cursor.par(), cursor.par()->next());
// When the free-spacing option is set for the current layout,
// disable the double-space checking
bool const freeSpacing =
textclasslist.Style(bview->buffer()->params.textclass,
cursor.row()->par()->getLayout()).free_spacing;
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(bview->buffer(),
cursor.par(),
cursor.pos()).number() == LyXFont::ON &&
getFont(bview->buffer(),
cursor.par(),
cursor.pos()-1).number() == LyXFont::ON)
)
Number(bview); // Set current_font.number to OFF
} else if (isdigit(c) &&
real_current_font.isVisibleRightToLeft()) {
Number(bview); // 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(bview->buffer(),
cursor.par(),
cursor.pos() - 1,
current_font);
} else if (contains(number_seperators, c) &&
cursor.pos() >= 2 &&
getFont(bview->buffer(),
cursor.par(),
cursor.pos()-2).number() == LyXFont::ON) {
setCharFont(bview->buffer(),
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)
LyXFont realtmpfont = real_current_font;
LyXFont rawtmpfont = current_font; /* store the current font.
* This is because of the use
* of cursor movements. The moving
* cursor would refresh the
* current font */
// Get the font that is used to calculate the baselineskip
Paragraph::size_type const lastpos = cursor.par()->size();
LyXFont rawparfont =
cursor.par()->getFontSettings(bview->buffer()->params,
lastpos - 1);
bool jumped_over_space = false;
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)
bview->owner()->message(_("You cannot insert a space at the beginning of a paragraph. Please read the Tutorial."));
else
bview->owner()->message(_("You cannot type two spaces this way. Please read the Tutorial."));
sent_space_message = true;
}
charInserted();
return;
}
} else if (IsNewlineChar(c)) {
if (cursor.par() == cursor.par()
&& cursor.pos() <= beginningOfMainBody(bview->buffer(), cursor.par())) {
charInserted();
return;
}
/* No newline at first position
* of a paragraph or behind labels.
* TeX does not allow that. */
if (cursor.pos() < cursor.par()->size() &&
cursor.par()->isLineSeparator(cursor.pos()))
// newline always after a blank!
cursorRight(bview);
cursor.row()->fill(-1); // to force a new break
}
// the display inset stuff
if (cursor.row()->par()->getChar(cursor.row()->pos()) == Paragraph::META_INSET
&& cursor.row()->par()->getInset(cursor.row()->pos())
&& (cursor.row()->par()->getInset(cursor.row()->pos())->display() ||
cursor.row()->par()->getInset(cursor.row()->pos())->needFullRow()))
cursor.row()->fill(-1); // to force a new break
// get the cursor row fist
Row * row = cursor.row();
int y = cursor.y() - row->baseline();
if (c != Paragraph::META_INSET) /* Here case LyXText::InsertInset
* already insertet the character */
cursor.par()->insertChar(cursor.pos(), c);
setCharFont(bview->buffer(), cursor.par(), cursor.pos(), rawtmpfont);
if (!jumped_over_space) {
// refresh the positions
Row * tmprow = row;
while (tmprow->next() && tmprow->next()->par() == row->par()) {
tmprow = tmprow->next();
tmprow->pos(tmprow->pos() + 1);
}
}
// Is there a break one row above
if ((cursor.par()->isLineSeparator(cursor.pos())
|| cursor.par()->isNewline(cursor.pos())
|| cursor.row()->fill() == -1)
&& row->previous() && row->previous()->par() == row->par()) {
Paragraph::size_type z = nextBreakPoint(bview,
row->previous(),
workWidth(bview));
if (z >= row->pos()) {
row->pos(z + 1);
// set the dimensions of the row above
row->previous()->fill(fill(bview,
row->previous(),
workWidth(bview)));
setHeightOfRow(bview, row->previous());
y -= row->previous()->height();
refresh_y = y;
refresh_row = row->previous();
status(bview, LyXText::NEED_MORE_REFRESH);
breakAgainOneRow(bview, row);
current_font = rawtmpfont;
real_current_font = realtmpfont;
setCursor(bview, cursor.par(), cursor.pos() + 1,
false, cursor.boundary());
// cursor MUST be in row now.
if (row->next() && row->next()->par() == row->par())
need_break_row = row->next();
else
need_break_row = 0;
// check, wether the last characters font has changed.
if (cursor.pos() && cursor.pos() == cursor.par()->size()
&& rawparfont != rawtmpfont)
redoHeightOfParagraph(bview, cursor);
charInserted();
return;
}
}
// recalculate the fill of the row
if (row->fill() >= 0) /* needed because a newline
* will set fill to -1. Otherwise
* we would not get a rebreak! */
row->fill(fill(bview, row, workWidth(bview)));
if (row->fill() < 0) {
refresh_y = y;
refresh_row = row;
refresh_x = cursor.x();
refresh_pos = cursor.pos();
status(bview, LyXText::NEED_MORE_REFRESH);
breakAgainOneRow(bview, row);
// will the cursor be in another row now?
if (rowLast(row) <= cursor.pos() + 1 && row->next()) {
if (row->next() && row->next()->par() == row->par())
// this should always be true
row = row->next();
breakAgainOneRow(bview, row);
}
current_font = rawtmpfont;
real_current_font = realtmpfont;
setCursor(bview, cursor.par(), cursor.pos() + 1, false,
cursor.boundary());
if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
!= cursor.boundary())
setCursor(bview, cursor.par(), cursor.pos(), false,
!cursor.boundary());
if (row->next() && row->next()->par() == row->par())
need_break_row = row->next();
else
need_break_row = 0;
} else {
refresh_y = y;
refresh_x = cursor.x();
refresh_row = row;
refresh_pos = cursor.pos();
int const tmpheight = row->height();
setHeightOfRow(bview, row);
if (tmpheight == row->height())
status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
else
status(bview, LyXText::NEED_MORE_REFRESH);
current_font = rawtmpfont;
real_current_font = realtmpfont;
setCursor(bview, cursor.par(), cursor.pos() + 1, false,
cursor.boundary());
}
// check, wether the last characters font has changed.
if (cursor.pos() && cursor.pos() == cursor.par()->size()
&& rawparfont != rawtmpfont) {
redoHeightOfParagraph(bview, cursor);
} else {
// now the special right address boxes
if (textclasslist.Style(bview->buffer()->params.textclass,
cursor.par()->getLayout()).margintype
== MARGIN_RIGHT_ADDRESS_BOX) {
redoDrawingOfParagraph(bview, cursor);
}
}
charInserted();
}
void LyXText::charInserted()
{
// Here we could call FinishUndo for every 20 characters inserted.
// This is from my experience how emacs does it.
static unsigned int counter;
if (counter < 20) {
++counter;
} else {
finishUndo();
counter = 0;
}
}
void LyXText::prepareToPrint(BufferView * bview,
Row * row, float & x,
float & fill_separator,
float & fill_hfill,
float & fill_label_hfill,
bool bidi) const
{
float nlh;
float ns;
float w = row->fill();
fill_hfill = 0;
fill_label_hfill = 0;
fill_separator = 0;
fill_label_hfill = 0;
bool const is_rtl =
row->par()->isRightToLeftPar(bview->buffer()->params);
if (is_rtl) {
x = (workWidth(bview) > 0)
? rightMargin(bview->buffer(), row) : 0;
} else
x = (workWidth(bview) > 0) ? leftMargin(bview, row) : 0;
// is there a manual margin with a manual label
if (textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout()).margintype == MARGIN_MANUAL
&& textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout()).labeltype == LABEL_MANUAL) {
/* one more since labels are left aligned */
nlh = numberOfLabelHfills(bview->buffer(), row) + 1;
if (nlh && !row->par()->getLabelWidthString().empty()) {
fill_label_hfill = labelFill(bview, row) / nlh;
}
}
// are there any hfills in the row?
float const nh = numberOfHfills(bview->buffer(), row);
if (nh)
fill_hfill = w / nh;
else {
// is it block, flushleft or flushright?
// set x how you need it
int align;
if (row->par()->params().align() == LYX_ALIGN_LAYOUT)
align = textclasslist.Style(bview->buffer()->params.textclass, row->par()->getLayout()).align;
else
align = row->par()->params().align();
// center displayed insets
Inset * inset;
if (row->par()->getChar(row->pos()) == Paragraph::META_INSET
&& (inset=row->par()->getInset(row->pos()))
&& (inset->display())) // || (inset->scroll() < 0)))
align = (inset->lyxCode() == Inset::MATHMACRO_CODE)
? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
switch (align) {
case LYX_ALIGN_BLOCK:
ns = numberOfSeparators(bview->buffer(), row);
if (ns && row->next() && row->next()->par() == row->par() &&
!(row->next()->par()->isNewline(row->next()->pos() - 1))
&& !(row->next()->par()->getChar(row->next()->pos()) == Paragraph::META_INSET
&& row->next()->par()->getInset(row->next()->pos())
&& row->next()->par()->getInset(row->next()->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;
}
}
if (!bidi)
return;
computeBidiTables(bview->buffer(), row);
if (is_rtl) {
Paragraph::size_type main_body =
beginningOfMainBody(bview->buffer(), row->par());
Paragraph::size_type last = rowLast(row);
if (main_body > 0 &&
(main_body-1 > last ||
!row->par()->isLineSeparator(main_body-1))) {
LyXLayout const & layout =
textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout());
x += lyxfont::width(layout.labelsep,
getFont(bview->buffer(), row->par(), -2));
if (main_body-1 <= last)
x += fill_label_hfill;
}
}
}
/* 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(BufferView * bview) const
{
// treat floats, HFills and Insets as words
LyXCursor tmpcursor = cursor;
// CHECK See comment on top of text.C
if (tmpcursor.pos() == tmpcursor.par()->size()
&& tmpcursor.par()->next()) {
tmpcursor.par(tmpcursor.par()->next());
tmpcursor.pos(0);
} else {
int steps = 0;
// Skip through initial nonword stuff.
while (tmpcursor.pos() < tmpcursor.par()->size() &&
! tmpcursor.par()->isWord(tmpcursor.pos())) {
// printf("Current pos1 %d", tmpcursor.pos()) ;
tmpcursor.pos(tmpcursor.pos() + 1);
++steps;
}
// Advance through word.
while (tmpcursor.pos() < tmpcursor.par()->size() &&
tmpcursor.par()->isWord( tmpcursor.pos())) {
// printf("Current pos2 %d", tmpcursor.pos()) ;
tmpcursor.pos(tmpcursor.pos() + 1);
++steps;
}
}
setCursor(bview, tmpcursor.par(), tmpcursor.pos());
}
void LyXText::cursorTab(BufferView * bview) const
{
LyXCursor tmpcursor = cursor;
while (tmpcursor.pos() < tmpcursor.par()->size()
&& !tmpcursor.par()->isNewline(tmpcursor.pos()))
tmpcursor.pos(tmpcursor.pos() + 1);
if (tmpcursor.pos() == tmpcursor.par()->size()){
if (tmpcursor.par()->next()) {
tmpcursor.par(tmpcursor.par()->next());
tmpcursor.pos(0);
}
} else
tmpcursor.pos(tmpcursor.pos() + 1);
setCursor(bview, tmpcursor.par(), tmpcursor.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(BufferView * bview) const
{
LyXCursor tmpcursor = cursor;
cursorLeftOneWord(tmpcursor);
setCursor(bview, tmpcursor.par(), tmpcursor.pos());
}
void LyXText::cursorLeftOneWord(LyXCursor & cur) const
{
// treat HFills, floats and Insets as words
cur = cursor;
while (cur.pos()
&& (cur.par()->isSeparator(cur.pos() - 1)
|| cur.par()->isKomma(cur.pos() - 1))
&& !(cur.par()->isHfill(cur.pos() - 1)
|| cur.par()->isInset(cur.pos() - 1)))
cur.pos(cur.pos() - 1);
if (cur.pos()
&& (cur.par()->isInset(cur.pos() - 1)
|| cur.par()->isHfill(cur.pos() - 1))) {
cur.pos(cur.pos() - 1);
} else if (!cur.pos()) {
if (cur.par()->previous()){
cur.par(cur.par()->previous());
cur.pos(cur.par()->size());
}
} else { // Here, cur != 0
while (cur.pos() > 0 &&
cur.par()->isWord(cur.pos()-1) )
cur.pos(cur.pos() - 1);
}
}
/* -------> Select current word. This depends on behaviour of
CursorLeftOneWord(), so it is patched as well. */
void LyXText::getWord(LyXCursor & from, LyXCursor & to,
word_location const loc) const
{
// first put the cursor where we wana start to select the word
from = cursor;
switch(loc) {
case WHOLE_WORD_STRICT:
if (cursor.pos() == 0 || cursor.pos() == cursor.par()->size()
|| cursor.par()->isSeparator(cursor.pos())
|| cursor.par()->isKomma(cursor.pos())
|| cursor.par()->isSeparator(cursor.pos() -1)
|| cursor.par()->isKomma(cursor.pos() -1)) {
to = from;
return;
}
// no break here, we go to the next
case WHOLE_WORD:
// Move cursor to the beginning, when not already there.
if (from.pos() && !from.par()->isSeparator(from.pos() - 1)
&& !from.par()->isKomma(from.pos() - 1))
cursorLeftOneWord(from);
break;
case PREVIOUS_WORD:
// always move the cursor to the beginning of previous word
cursorLeftOneWord(from);
break;
case NEXT_WORD:
lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet\n";
break;
case PARTIAL_WORD:
break;
}
to = from;
while (to.pos() < to.par()->size()
&& !to.par()->isSeparator(to.pos())
&& !to.par()->isKomma(to.pos())
&& !to.par()->isHfill(to.pos()) )
{
to.pos(to.pos() + 1);
}
}
void LyXText::selectWord(BufferView * bview, word_location const loc)
{
LyXCursor from;
LyXCursor to;
getWord(from, to, loc);
if (cursor != from)
setCursor(bview, from.par(), from.pos());
if (to == from)
return;
selection.cursor = cursor;
setCursor(bview, to.par(), to.pos() );
setSelection(bview);
}
/* -------> Select the word currently under the cursor when no
selection is currently set */
bool LyXText::selectWordWhenUnderCursor(BufferView * bview,
word_location const loc)
{
if (!selection.set()) {
selectWord(bview, loc);
return selection.set();
}
return false;
}
// This function is only used by the spellchecker for NextWord().
// It doesn't handle LYX_ACCENTs and probably never will.
string const LyXText::selectNextWord(BufferView * bview,
float & value) const
{
if (the_locking_inset) {
string str = the_locking_inset->selectNextWord(bview, value);
if (!str.empty()) {
value += float(cursor.y())/float(height);
return str;
}
#warning Dekel please have a look on this one RTL? (Jug)
// we have to go on checking so move cusor to the right
if (cursor.pos() == cursor.par()->size()) {
if (!cursor.par()->next())
return str;
cursor.par(cursor.par()->next());
cursor.pos(0);
} else
cursor.pos(cursor.pos() + 1);
}
Paragraph * tmppar = 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()->previous()) {
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 ((cursor.par()->size() > cursor.pos()
&& (!cursor.par()->isLetter(cursor.pos())
#ifndef NO_LATEX
|| cursor.par()->getFont(bview->buffer()->params, cursor.pos())
.latex() == LyXFont::ON
#endif
)
&& (!cursor.par()->isInset(cursor.pos()) ||
!cursor.par()->getInset(cursor.pos())->isTextInset()))
|| (cursor.par()->size() == cursor.pos()
&& cursor.par()->next()))
{
if (cursor.pos() == cursor.par()->size()) {
cursor.par(cursor.par()->next());
cursor.pos(0);
} else
cursor.pos(cursor.pos() + 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!
cursor.par()->getInset(cursor.pos())->edit(bview);
// now call us again to do the above trick
// but obviously we have to start from down below ;)
return bview->text->selectNextWord(bview, value);
}
// Update the value if we changed paragraphs
if (cursor.par() != tmppar){
setCursor(bview, cursor.par(), cursor.pos());
value = float(cursor.y())/float(height);
}
// Start the selection from here
selection.cursor = cursor;
Inset * inset;
// and find the end of the word
// (optional hyphens are part of a word)
while (cursor.pos() < cursor.par()->size()
&& (cursor.par()->isLetter(cursor.pos()))
// assignment is intentional here
|| ((inset = getInset())
&& inset->lyxCode() == Inset::SPECIALCHAR_CODE
&& static_cast<InsetSpecialChar *>(inset)->kind()
== InsetSpecialChar::HYPHENATION
))
cursor.pos(cursor.pos() + 1);
// Finally, we copy the word to a string and return it
string str;
if (selection.cursor.pos() < cursor.pos()) {
Paragraph::size_type i;
for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
if (cursor.par()->getChar(i) != Paragraph::META_INSET)
str += cursor.par()->getChar(i);
}
}
return str;
}
// This one is also only for the spellchecker
void LyXText::selectSelectedWord(BufferView * bview)
{
if (the_locking_inset) {
the_locking_inset->selectSelectedWord(bview);
return;
}
// move cursor to the beginning
setCursor(bview, selection.cursor.par(), selection.cursor.pos());
// set the sel cursor
selection.cursor = cursor;
Inset * inset;
// now find the end of the word
while (cursor.pos() < cursor.par()->size()
&& (cursor.par()->isLetter(cursor.pos())
// assignment is intentional here
|| ((inset = getInset())
&& inset->lyxCode() == Inset::SPECIALCHAR_CODE
&& static_cast<InsetSpecialChar *>(inset)->kind()
== InsetSpecialChar::HYPHENATION
)))
cursor.pos(cursor.pos() + 1);
setCursor(bview, cursor.par(), cursor.pos());
// finally set the selection
setSelection(bview);
}
/* -------> Delete from cursor up to the end of the current or next word. */
void LyXText::deleteWordForward(BufferView * bview)
{
if (!cursor.par()->size())
cursorRight(bview);
else {
LyXCursor tmpcursor = cursor;
tmpcursor.row(0); //<2F>??
selection.set(true); // to avoid deletion
cursorRightOneWord(bview);
setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
selection.cursor = cursor;
cursor = tmpcursor;
setSelection(bview);
/* -----> Great, CutSelection() gets rid of multiple spaces. */
cutSelection(bview);
}
}
/* -------> Delete from cursor to start of current or prior word. */
void LyXText::deleteWordBackward(BufferView * bview)
{
if (!cursor.par()->size())
cursorLeft(bview);
else {
LyXCursor tmpcursor = cursor;
tmpcursor.row(0); // ??
selection.set(true); // to avoid deletion
cursorLeftOneWord(bview);
setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
selection.cursor = cursor;
cursor = tmpcursor;
setSelection(bview);
cutSelection(bview);
}
}
/* -------> Kill to end of line. */
void LyXText::deleteLineForward(BufferView * bview)
{
if (!cursor.par()->size())
// Paragraph is empty, so we just go to the right
cursorRight(bview);
else {
LyXCursor tmpcursor = cursor;
// We can't store the row over a regular setCursor
// so we set it to 0 and reset it afterwards.
tmpcursor.row(0); //<2F>??
selection.set(true); // to avoid deletion
cursorEnd(bview);
setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
selection.cursor = cursor;
cursor = tmpcursor;
setSelection(bview);
// What is this test for ??? (JMarc)
if (!selection.set()) {
deleteWordForward(bview);
} else {
cutSelection(bview);
}
}
}
// Change the case of a word at cursor position.
// This function directly manipulates Paragraph::text because there
// is no Paragraph::SetChar currently. I did what I could to ensure
// that it is correct. I guess part of it should be moved to
// Paragraph, but it will have to change for 1.1 anyway. At least
// it does not access outside of the allocated array as the older
// version did. (JMarc)
void LyXText::changeCase(BufferView * bview, LyXText::TextCase action)
{
LyXCursor from;
LyXCursor to;
if (selection.set()) {
from = selection.start;
to = selection.end;
} else {
getWord(from, to, PARTIAL_WORD);
setCursor(bview, to.par(), to.pos() + 1);
}
changeRegionCase(bview, from, to, action);
}
void LyXText::changeRegionCase(BufferView * bview,
LyXCursor const & from,
LyXCursor const & to,
LyXText::TextCase action)
{
lyx::Assert(from <= to);
setUndo(bview, Undo::FINISH,
from.par(), to.par()->next());
Paragraph::size_type pos = from.pos();
Paragraph * par = from.par();
while (par && (pos != to.pos() || par != to.par())) {
unsigned char c = par->getChar(pos);
if (!IsInsetChar(c) && !IsHfillChar(c)) {
switch (action) {
case text_lowercase:
c = tolower(c);
break;
case text_capitalization:
c = toupper(c);
action = text_lowercase;
break;
case text_uppercase:
c = toupper(c);
break;
}
}
par->setChar(pos, c);
checkParagraph(bview, par, pos);
++pos;
if (pos == par->size()) {
par = par->next();
pos = 0;
}
}
if (to.row() != from.row()) {
refresh_y = from.y() - from.row()->baseline();
refresh_row = from.row();
status(bview, LyXText::NEED_MORE_REFRESH);
}
}
void LyXText::transposeChars(BufferView & bview)
{
Paragraph * tmppar = cursor.par();
setUndo(&bview, Undo::FINISH,
tmppar, tmppar->next());
Paragraph::size_type tmppos = cursor.pos();
// First decide if it is possible to transpose at all
// We are at the beginning of a paragraph.
if (tmppos == 0) return;
// We are at the end of a paragraph.
if (tmppos == tmppar->size() - 1) return;
unsigned char c1 = tmppar->getChar(tmppos);
unsigned char c2 = tmppar->getChar(tmppos - 1);
if (c1 != Paragraph::META_INSET
&& c2 != Paragraph::META_INSET) {
tmppar->setChar(tmppos, c2);
tmppar->setChar(tmppos - 1, c1);
}
// We should have an implementation that handles insets
// as well, but that will have to come later. (Lgb)
checkParagraph(const_cast<BufferView*>(&bview), tmppar, tmppos);
}
void LyXText::Delete(BufferView * bview)
{
// 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()->previous() ?
old_cursor.par()->previous()->id() : 0;
// just move to the right
cursorRight(bview);
// 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()->previous() ? cursor.par()->previous()->id() : 0)
== old_cur_par_prev_id
&& cursor.par()->id() != old_cur_par_id)
return; // delete-empty-paragraph-mechanism has done it
// if you had success make a backspace
if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
LyXCursor tmpcursor = cursor;
cursor = old_cursor; // to make sure undo gets the right cursor position
setUndo(bview, Undo::DELETE,
cursor.par(), cursor.par()->next());
cursor = tmpcursor;
backspace(bview);
}
}
void LyXText::backspace(BufferView * bview)
{
// Get the font that is used to calculate the baselineskip
Paragraph::size_type lastpos = cursor.par()->size();
LyXFont rawparfont =
cursor.par()->getFontSettings(bview->buffer()->params,
lastpos - 1);
if (cursor.pos() == 0) {
// The cursor is at the beginning of a paragraph,
// so the the backspace will collapse two paragraphs into one.
// 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()->previous()) {
Paragraph * tmppar = cursor.par()->previous();
if (cursor.par()->getLayout() == tmppar->getLayout()
&& cursor.par()->getAlign() == tmppar->getAlign()) {
// Inherit bottom DTD from the paragraph below.
// (the one we are deleting)
tmppar->params().lineBottom(cursor.par()->params().lineBottom());
tmppar->params().spaceBottom(cursor.par()->params().spaceBottom());
tmppar->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
}
cursorLeft(bview);
// the layout things can change the height of a row !
int const tmpheight = cursor.row()->height();
setHeightOfRow(bview, cursor.row());
if (cursor.row()->height() != tmpheight) {
refresh_y = cursor.y() - cursor.row()->baseline();
refresh_row = cursor.row();
status(bview, LyXText::NEED_MORE_REFRESH);
}
return;
}
}
if (cursor.par()->previous()) {
setUndo(bview, Undo::DELETE,
cursor.par()->previous(),
cursor.par()->next());
}
Paragraph * tmppar = cursor.par();
Row * tmprow = cursor.row();
// 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()->previous()) {
// steps into the above paragraph.
setCursorIntern(bview, cursor.par()->previous(),
cursor.par()->previous()->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.
Even so with a footnote paragraph and a non-footnote
paragraph. I will not allow pasting in this case,
because the user would be confused if the footnote behaves
different wether it is open or closed.
Correction: Pasting is always allowed with standard-layout
*/
if (cursor.par() != tmppar
&& (cursor.par()->getLayout() == tmppar->getLayout()
|| tmppar->getLayout() == 0 /*standard*/)
&& cursor.par()->getAlign() == tmppar->getAlign()) {
removeParagraph(tmprow);
removeRow(tmprow);
cursor.par()->pasteParagraph(bview->buffer()->params);
if (!cursor.pos() || !cursor.par()->isSeparator(cursor.pos() - 1))
; //cursor.par()->insertChar(cursor.pos(), ' ');
// strangely enough it seems that commenting out the line above removes
// most or all of the segfaults. I will however also try to move the
// two Remove... lines in front of the PasteParagraph too.
else
if (cursor.pos())
cursor.pos(cursor.pos() - 1);
status(bview, LyXText::NEED_MORE_REFRESH);
refresh_row = cursor.row();
refresh_y = cursor.y() - cursor.row()->baseline();
// remove the lost paragraph
// This one is not safe, since the paragraph that the tmprow and the
// following rows belong to has been deleted by the PasteParagraph
// above. The question is... could this be moved in front of the
// PasteParagraph?
//RemoveParagraph(tmprow);
//RemoveRow(tmprow);
// This rebuilds the rows.
appendParagraph(bview, cursor.row());
updateCounters(bview, cursor.row());
// the row may have changed, block, hfills etc.
setCursor(bview, cursor.par(), cursor.pos(), false);
}
} else {
/* this is the code for a normal backspace, not pasting
* any paragraphs */
setUndo(bview, Undo::DELETE,
cursor.par(), cursor.par()->next());
// 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(bview, cursor.par(), cursor.pos()- 1,
false, cursor.boundary());
// some insets are undeletable here
if (cursor.par()->getChar(cursor.pos()) == Paragraph::META_INSET) {
if (!cursor.par()->getInset(cursor.pos())->deletable())
return;
// force complete redo when erasing display insets
// this is a cruel method but safe..... Matthias
if (cursor.par()->getInset(cursor.pos())->display() ||
cursor.par()->getInset(cursor.pos())->needFullRow()) {
cursor.par()->erase(cursor.pos());
redoParagraph(bview);
return;
}
}
Row * row = cursor.row();
int y = cursor.y() - row->baseline();
Paragraph::size_type z;
/* remember that a space at the end of a row doesnt count
* when calculating the fill */
if (cursor.pos() < rowLast(row) ||
!cursor.par()->isLineSeparator(cursor.pos())) {
row->fill(row->fill() + singleWidth(bview,
cursor.par(),
cursor.pos()));
}
/* some special code when deleting a newline. This is similar
* to the behavior when pasting paragraphs */
if (cursor.pos() && cursor.par()->isNewline(cursor.pos())) {
cursor.par()->erase(cursor.pos());
// refresh the positions
Row * tmprow = row;
while (tmprow->next() && tmprow->next()->par() == row->par()) {
tmprow = tmprow->next();
tmprow->pos(tmprow->pos() - 1);
}
if (cursor.par()->isLineSeparator(cursor.pos() - 1))
cursor.pos(cursor.pos() - 1);
if (cursor.pos() < cursor.par()->size()
&& !cursor.par()->isSeparator(cursor.pos())) {
cursor.par()->insertChar(cursor.pos(), ' ');
setCharFont(bview->buffer(), cursor.par(),
cursor.pos(), current_font);
// refresh the positions
tmprow = row;
while (tmprow->next() && tmprow->next()->par() == row->par()) {
tmprow = tmprow->next();
tmprow->pos(tmprow->pos() + 1);
}
}
} else {
cursor.par()->erase(cursor.pos());
// refresh the positions
Row * tmprow = row;
while (tmprow->next()
&& tmprow->next()->par() == row->par()) {
tmprow = tmprow->next();
tmprow->pos(tmprow->pos() - 1);
}
// delete newlines at the beginning of paragraphs
while (cursor.par()->size() &&
cursor.par()->isNewline(cursor.pos()) &&
cursor.pos() == beginningOfMainBody(bview->buffer(),
cursor.par())) {
cursor.par()->erase(cursor.pos());
// refresh the positions
tmprow = row;
while (tmprow->next() &&
tmprow->next()->par() == row->par()) {
tmprow = tmprow->next();
tmprow->pos(tmprow->pos() - 1);
}
}
}
// is there a break one row above
if (row->previous() && row->previous()->par() == row->par()) {
z = nextBreakPoint(bview, row->previous(),
workWidth(bview));
if (z >= row->pos()) {
row->pos(z + 1);
Row * tmprow = row->previous();
// maybe the current row is now empty
if (row->pos() >= row->par()->size()) {
// remove it
removeRow(row);
need_break_row = 0;
} else {
breakAgainOneRow(bview, row);
if (row->next() && row->next()->par() == row->par())
need_break_row = row->next();
else
need_break_row = 0;
}
// set the dimensions of the row above
y -= tmprow->height();
tmprow->fill(fill(bview, tmprow,
workWidth(bview)));
setHeightOfRow(bview, tmprow);
refresh_y = y;
refresh_row = tmprow;
status(bview, LyXText::NEED_MORE_REFRESH);
setCursor(bview, cursor.par(), cursor.pos(),
false, cursor.boundary());
//current_font = rawtmpfont;
//real_current_font = realtmpfont;
// check, whether the last character's font has changed.
if (rawparfont !=
cursor.par()->getFontSettings(bview->buffer()->params,
cursor.par()->size() - 1))
redoHeightOfParagraph(bview, cursor);
return;
}
}
// break the cursor row again
if (row->next() && row->next()->par() == row->par() &&
(rowLast(row) == row->par()->size() - 1 ||
nextBreakPoint(bview, row, workWidth(bview)) != rowLast(row))) {
/* it can happen that a paragraph loses one row
* without a real breakup. This is when a word
* is to long to be broken. Well, I don t care this
* hack ;-) */
if (rowLast(row) == row->par()->size() - 1)
removeRow(row->next());
refresh_y = y;
refresh_row = row;
status(bview, LyXText::NEED_MORE_REFRESH);
breakAgainOneRow(bview, row);
// will the cursor be in another row now?
if (row->next() && row->next()->par() == row->par() &&
rowLast(row) <= cursor.pos()) {
row = row->next();
breakAgainOneRow(bview, row);
}
setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
if (row->next() && row->next()->par() == row->par())
need_break_row = row->next();
else
need_break_row = 0;
} else {
// set the dimensions of the row
row->fill(fill(bview, row, workWidth(bview)));
int const tmpheight = row->height();
setHeightOfRow(bview, row);
if (tmpheight == row->height())
status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
else
status(bview, LyXText::NEED_MORE_REFRESH);
refresh_y = y;
refresh_row = row;
setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
}
}
// current_font = rawtmpfont;
// real_current_font = realtmpfont;
if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
!= cursor.boundary())
setCursor(bview, cursor.par(), cursor.pos(), false,
!cursor.boundary());
lastpos = cursor.par()->size();
if (cursor.pos() == lastpos)
setCurrentFont(bview);
// check, whether the last characters font has changed.
if (rawparfont !=
cursor.par()->getFontSettings(bview->buffer()->params, lastpos - 1)) {
redoHeightOfParagraph(bview, cursor);
} else {
// now the special right address boxes
if (textclasslist.Style(bview->buffer()->params.textclass,
cursor.par()->getLayout()).margintype == MARGIN_RIGHT_ADDRESS_BOX) {
redoDrawingOfParagraph(bview, cursor);
}
}
}
void LyXText::getVisibleRow(BufferView * bview, int y_offset, int x_offset,
Row * row_ptr, int y, bool cleared)
{
// returns a printed row
Painter & pain = bview->painter();
bool const is_rtl =
row_ptr->par()->isRightToLeftPar(bview->buffer()->params);
Paragraph::size_type const last = rowLastPrintable(row_ptr);
Paragraph::size_type vpos;
Paragraph::size_type pos;
float tmpx;
LyXFont font(LyXFont::ALL_SANE);
int maxdesc;
if (row_ptr->height() <= 0) {
lyxerr << "LYX_ERROR: row.height: "
<< row_ptr->height() << endl;
return;
}
float x;
float fill_separator;
float fill_hfill;
float fill_label_hfill;
prepareToPrint(bview, row_ptr, x, fill_separator,
fill_hfill, fill_label_hfill);
if (inset_owner && (x < 0))
x = 0;
x += x_offset;
// clear the area where we want to paint/print
int const ww = bview->workWidth();
bool clear_area = true;
Inset * inset = 0;
if (!bview->screen()->forceClear() && last == row_ptr->pos()
&& row_ptr->par()->getChar(row_ptr->pos()) == Paragraph::META_INSET
&& (inset = row_ptr->par()->getInset(row_ptr->pos()))) {
clear_area = inset->doClearArea();
}
// we don't need to clear it's already done!!!
if (cleared) {
clear_area = true;
} else if (clear_area) {
#ifdef WITH_WARNINGS
#warning Should be fixed with a lyxinset::clear_width(bv, font) function! (Jug)
#warning Should we not fix this in the Painter, please have a look Lars! (Jug)
#endif
int const y = y_offset < 0 ? 0 : y_offset;
int const h = y_offset < 0 ?
row_ptr->height() + y_offset : row_ptr->height();
int const w = inset_owner ?
inset_owner->width(bview, font) - 2 : ww;
int const x = x_offset;
pain.fillRectangle(x, y, w, h, backgroundColor());
} else if (inset != 0) {
int h = row_ptr->baseline() - inset->ascent(bview, font);
// first clear the whole row above the inset!
if (h > 0) {
#if 0
int const w = (inset_owner ?
inset_owner->width(bview, font) : ww);
#endif
pain.fillRectangle(x_offset, y_offset, ww, h,
backgroundColor());
}
h += inset->ascent(bview, font) + inset->descent(bview, font);
// clear the space below the inset!
if ((row_ptr->height() - h) > 0) {
#if 0
int const w = (inset_owner ?
inset_owner->width(bview, font) : ww);
#endif
pain.fillRectangle(x_offset, y_offset + h,
ww, row_ptr->height() - h,
backgroundColor());
}
// clear the space behind the inset, if needed
if (!inset_owner && !inset->display() && !inset->needFullRow())
{
int const w = inset->width(bview, font) + int(x);
pain.fillRectangle(w, y_offset,
ww - w, row_ptr->height(),
backgroundColor());
}
}
if (selection.set()) {
int const w = (inset_owner ?
inset_owner->width(bview, font) : ww);
// selection code
if (bidi_same_direction) {
if (selection.start.row() == row_ptr &&
selection.end.row() == row_ptr) {
if (selection.start.x() < selection.end.x())
pain.fillRectangle(x_offset + selection.start.x(),
y_offset,
selection.end.x() - selection.start.x(),
row_ptr->height(),
LColor::selection);
else
pain.fillRectangle(x_offset + selection.end.x(),
y_offset,
selection.start.x() - selection.end.x(),
row_ptr->height(),
LColor::selection);
} else if (selection.start.row() == row_ptr) {
if (is_rtl)
pain.fillRectangle(x_offset, y_offset,
selection.start.x(),
row_ptr->height(),
LColor::selection);
else
pain.fillRectangle(x_offset + selection.start.x(),
y_offset,
w - selection.start.x(),
row_ptr->height(),
LColor::selection);
} else if (selection.end.row() == row_ptr) {
if (is_rtl)
pain.fillRectangle(x_offset + selection.end.x(),
y_offset,
w - selection.end.x(),
row_ptr->height(),
LColor::selection);
else
pain.fillRectangle(x_offset, y_offset,
selection.end.x(),
row_ptr->height(),
LColor::selection);
} else if (y > selection.start.y()
&& y < selection.end.y()) {
pain.fillRectangle(x_offset, y_offset, w,
row_ptr->height(),
LColor::selection);
}
} else if (selection.start.row() != row_ptr &&
selection.end.row() != row_ptr &&
y > selection.start.y()
&& y < selection.end.y()) {
pain.fillRectangle(x_offset, y_offset, w,
row_ptr->height(),
LColor::selection);
} else if (selection.start.row() == row_ptr ||
selection.end.row() == row_ptr) {
float tmpx = x;
if ((selection.start.row() != row_ptr && !is_rtl) ||
(selection.end.row() != row_ptr && is_rtl))
pain.fillRectangle(x_offset, y_offset,
int(tmpx),
row_ptr->height(),
LColor::selection);
Paragraph::size_type main_body =
beginningOfMainBody(bview->buffer(),
row_ptr->par());
for (vpos = row_ptr->pos(); vpos <= last; ++vpos) {
pos = vis2log(vpos);
float const old_tmpx = tmpx;
if (main_body > 0 && pos == main_body-1) {
tmpx += fill_label_hfill +
lyxfont::width(textclasslist.Style(bview->buffer()->params.textclass,
row_ptr->par()->getLayout()).labelsep,
getFont(bview->buffer(),row_ptr->par(), -2));
if (row_ptr->par()->isLineSeparator(main_body-1))
tmpx -= singleWidth(bview, row_ptr->par(), main_body-1);
}
if (hfillExpansion(bview->buffer(), row_ptr, pos)) {
tmpx += singleWidth(bview, row_ptr->par(), pos);
if (pos >= main_body)
tmpx += fill_hfill;
else
tmpx += fill_label_hfill;
}
else if (row_ptr->par()->isSeparator(pos)) {
tmpx += singleWidth(bview, row_ptr->par(), pos);
if (pos >= main_body)
tmpx += fill_separator;
} else
tmpx += singleWidth(bview, row_ptr->par(), pos);
if ((selection.start.row() != row_ptr ||
selection.start.pos() <= pos) &&
(selection.end.row() != row_ptr ||
pos < selection.end.pos()) )
// Here we do not use x_offset as x_offset was
// added to x.
pain.fillRectangle(int(old_tmpx),
y_offset,
int(tmpx - old_tmpx + 1),
row_ptr->height(),
LColor::selection);
}
if ((selection.start.row() != row_ptr && is_rtl) ||
(selection.end.row() != row_ptr && !is_rtl) )
pain.fillRectangle(x_offset + int(tmpx),
y_offset,
int(ww - tmpx),
row_ptr->height(),
LColor::selection);
}
}
int box_x = 0;
// Draw appendix lines
Paragraph * firstpar = row_ptr->par();
if (firstpar->params().appendix()) {
pain.line(1, y_offset,
1, y_offset + row_ptr->height(),
LColor::appendixline);
pain.line(ww - 2, y_offset,
ww - 2, y_offset + row_ptr->height(),
LColor::appendixline);
}
// Draw depth lines
Paragraph::depth_type const depth = firstpar->getDepth();
if (depth > 0) {
Paragraph::depth_type next_depth = 0;
Paragraph::depth_type prev_depth = 0;
if (row_ptr->next())
next_depth = row_ptr->next()->par()->getDepth();
if (row_ptr->previous())
prev_depth = row_ptr->previous()->par()->getDepth();
for (Paragraph::depth_type i = 1; i <= depth; ++i) {
int const line_x = (LYX_PAPER_MARGIN / 5) *
i + box_x + x_offset;
pain.line(line_x, y_offset, line_x,
y_offset + row_ptr->height() - 1 - (i - next_depth - 1) * 3,
LColor::depthbar);
if (i > prev_depth)
pain.fillRectangle(line_x, y_offset, LYX_PAPER_MARGIN / 5, 2,
LColor::depthbar);
if (i > next_depth)
pain.fillRectangle(line_x,
y_offset + row_ptr->height() - 2 - (i - next_depth - 1) * 3,
LYX_PAPER_MARGIN / 5, 2,
LColor::depthbar);
}
}
LyXLayout const & layout =
textclasslist.Style(bview->buffer()->params.textclass,
row_ptr->par()->getLayout());
int y_top = 0;
int y_bottom = row_ptr->height();
// is it a first row?
if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
// start of appendix?
if (row_ptr->par()->params().startOfAppendix()) {
pain.line(1, y_offset,
ww - 2, y_offset,
LColor::appendixline);
}
// think about the margins
if (!row_ptr->previous() && bv_owner)
y_top += LYX_PAPER_MARGIN;
// draw a top pagebreak
if (row_ptr->par()->params().pagebreakTop()) {
LyXFont pb_font;
pb_font.setColor(LColor::pagebreak).decSize();
int w = 0;
int a = 0;
int d = 0;
pain.line(0, y_offset + y_top + 2*defaultHeight(),
ww,
y_offset + y_top + 2 * defaultHeight(),
LColor::pagebreak,
Painter::line_onoffdash);
lyxfont::rectText(_("Page Break (top)"), pb_font,
w, a, d);
pain.rectText((ww - w)/2,
y_offset + y_top + 2 * defaultHeight() + d,
_("Page Break (top)"),
pb_font,
backgroundColor(),
backgroundColor());
y_top += 3 * defaultHeight();
}
if (row_ptr->par()->params().spaceTop().kind() == VSpace::VFILL) {
// draw a vfill top
pain.line(0, y_offset + 2 + y_top,
LYX_PAPER_MARGIN, y_offset + 2 + y_top,
LColor::vfillline);
pain.line(0, y_offset + y_top + 3 * defaultHeight(),
LYX_PAPER_MARGIN,
y_offset + y_top + 3 * defaultHeight(),
LColor::vfillline);
pain.line(LYX_PAPER_MARGIN / 2, y_offset + 2 + y_top,
LYX_PAPER_MARGIN / 2,
y_offset + y_top + 3 * defaultHeight(),
LColor::vfillline);
y_top += 3 * defaultHeight();
}
// think about user added space
y_top += int(row_ptr->par()->params().spaceTop().inPixels(bview));
// think about the parskip
// some parskips VERY EASY IMPLEMENTATION
if (bview->buffer()->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
if (layout.latextype == LATEX_PARAGRAPH
&& firstpar->getDepth() == 0
&& firstpar->previous())
y_top += bview->buffer()->params.getDefSkip().inPixels(bview);
else if (firstpar->previous()
&& textclasslist.Style(bview->buffer()->params.textclass,
firstpar->previous()->getLayout()).latextype == LATEX_PARAGRAPH
&& firstpar->previous()->getDepth() == 0)
// is it right to use defskip here, too? (AS)
y_top += bview->buffer()->params.getDefSkip().inPixels(bview);
}
if (row_ptr->par()->params().lineTop()) {
// draw a top line
y_top += lyxfont::ascent('x',
getFont(bview->buffer(),
row_ptr->par(), 0));
int const w = (inset_owner ?
inset_owner->width(bview, font) : ww);
int const xp = static_cast<int>(inset_owner ? x : 0);
pain.line(xp, y_offset + y_top,
w, y_offset + y_top,
LColor::topline,
Painter::line_solid,
Painter::line_thick);
y_top += lyxfont::ascent('x',getFont(bview->buffer(),
row_ptr->par(), 0));
}
// should we print a label?
if (layout.labeltype >= LABEL_STATIC
&& (layout.labeltype != LABEL_STATIC
|| layout.latextype != LATEX_ENVIRONMENT
|| row_ptr->par()->isFirstInSequence())) {
font = getFont(bview->buffer(), row_ptr->par(), -2);
if (!row_ptr->par()->getLabelstring().empty()) {
tmpx = x;
string const tmpstring =
row_ptr->par()->getLabelstring();
if (layout.labeltype == LABEL_COUNTER_CHAPTER) {
if (bview->buffer()->params.secnumdepth >= 0) {
// this is special code for
// the chapter layout. This is
// printed in an extra row
// and has a pagebreak at
// the top.
float spacing_val = 1.0;
if (!row_ptr->par()->params().spacing().isDefault()) {
spacing_val = row_ptr->par()->params().spacing().getValue();
} else {
spacing_val = bview->buffer()->params.spacing.getValue();
}
maxdesc = int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val)
+ int(layout.parsep) * defaultHeight();
if (is_rtl)
tmpx = ww - leftMargin(bview, row_ptr) -
lyxfont::width(tmpstring, font);
pain.text(int(tmpx),
y_offset + row_ptr->baseline() - row_ptr->ascent_of_text() - maxdesc,
tmpstring, font);
}
} else {
if (is_rtl) {
tmpx = ww - leftMargin(bview, row_ptr)
+ lyxfont::width(layout.labelsep, font);
} else
tmpx = x - lyxfont::width(layout.labelsep, font)
- lyxfont::width(tmpstring, font);
// draw it!
pain.text(int(tmpx),
y_offset + row_ptr->baseline(),
tmpstring, font);
}
}
// the labels at the top of an environment.
// More or less for bibliography
} else if (layout.labeltype == LABEL_TOP_ENVIRONMENT ||
layout.labeltype == LABEL_BIBLIO ||
layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
if (row_ptr->par()->isFirstInSequence()) {
font = getFont(bview->buffer(),
row_ptr->par(), -2);
if (!row_ptr->par()->getLabelstring().empty()) {
string const tmpstring =
row_ptr->par()->getLabelstring();
float spacing_val = 1.0;
if (!row_ptr->par()->params().spacing().isDefault()) {
spacing_val = row_ptr->par()->params().spacing().getValue();
} else {
spacing_val = bview->buffer()->params.spacing.getValue();
}
maxdesc = int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val
+ (layout.labelbottomsep * defaultHeight()));
tmpx = x;
if (layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT){
tmpx = ( (is_rtl ? leftMargin(bview, row_ptr) : x)
+ ww - rightMargin(bview->buffer(), row_ptr) ) / 2;
tmpx -= lyxfont::width(tmpstring, font) / 2;
} else if (is_rtl)
tmpx = ww - leftMargin(bview, row_ptr) -
lyxfont::width(tmpstring, font);
pain.text(int(tmpx),
y_offset + row_ptr->baseline()
- row_ptr->ascent_of_text()
- maxdesc,
tmpstring, font);
}
}
}
if (layout.labeltype == LABEL_BIBLIO && row_ptr->par()->bibkey) {
font = getFont(bview->buffer(), row_ptr->par(), -1);
if (is_rtl)
tmpx = ww - leftMargin(bview, row_ptr)
+ lyxfont::width(layout.labelsep, font);
else
tmpx = x - lyxfont::width(layout.labelsep, font)
- row_ptr->par()->bibkey->width(bview, font);
row_ptr->par()->bibkey->draw(bview, font,
y_offset + row_ptr->baseline(),
tmpx, clear_area);
}
}
// is it a last row?
Paragraph * par = row_ptr->par();
if (row_ptr->par() == par
&& (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par())) {
// think about the margins
if (!row_ptr->next() && bv_owner)
y_bottom -= LYX_PAPER_MARGIN;
// draw a bottom pagebreak
if (firstpar->params().pagebreakBottom()) {
LyXFont pb_font;
pb_font.setColor(LColor::pagebreak).decSize();
int const y_place = y_offset + y_bottom
- 2 * defaultHeight();
int w = 0;
int a = 0;
int d = 0;
pain
.line(0, y_place, ww, y_place,
LColor::pagebreak,
Painter::line_onoffdash);
lyxfont::rectText(_("Page Break (bottom)"), pb_font,
w, a, d);
pain.rectText((ww - w) / 2, y_place + d,
_("Page Break (bottom)"),
pb_font,
backgroundColor(),
backgroundColor());
y_bottom -= 3 * defaultHeight();
}
if (firstpar->params().spaceBottom().kind() == VSpace::VFILL) {
// draw a vfill bottom
int const y_place = y_offset + y_bottom
- 3 * defaultHeight();
pain.line(0, y_place,
LYX_PAPER_MARGIN, y_place,
LColor::vfillline);
pain.line(0, y_offset + y_bottom - 2,
LYX_PAPER_MARGIN,
y_offset + y_bottom - 2,
LColor::vfillline);
pain.line(LYX_PAPER_MARGIN / 2,
y_place,
LYX_PAPER_MARGIN / 2,
y_offset + y_bottom - 2,
LColor::vfillline);
y_bottom -= 3 * defaultHeight();
}
// think about user added space
y_bottom -= int(firstpar->params().spaceBottom().inPixels(bview));
if (firstpar->params().lineBottom()) {
// draw a bottom line
y_bottom -= lyxfont::ascent('x',
getFont(bview->buffer(),
par,
par->size() - 1));
int const w = (inset_owner ?
inset_owner->width(bview, font) : ww);
int const xp = static_cast<int>(inset_owner ? x : 0);
pain.line(xp, y_offset + y_bottom,
w, y_offset + y_bottom,
LColor::topline, Painter::line_solid,
Painter::line_thick);
y_bottom -= lyxfont::ascent('x',
getFont(bview->buffer(),
par,
par->size() - 1));
}
// draw an endlabel
int const endlabel =
row_ptr->par()->getEndLabel(bview->buffer()->params);
switch (endlabel) {
case END_LABEL_BOX:
case END_LABEL_FILLED_BOX:
{
LyXFont const font = getFont(bview->buffer(),
row_ptr->par(), last);
int const size = int(0.75 * lyxfont::maxAscent(font));
int const y = (y_offset + row_ptr->baseline()) - size;
int x = is_rtl ? LYX_PAPER_MARGIN
: ww - LYX_PAPER_MARGIN - size;
if (row_ptr->fill() <= size)
x += (size - row_ptr->fill() + 1) * (is_rtl ? -1 : 1);
if (endlabel == END_LABEL_BOX) {
pain.line(x, y, x, y + size,
LColor::eolmarker);
pain.line(x + size, y, x + size , y + size,
LColor::eolmarker);
pain.line(x, y, x + size, y,
LColor::eolmarker);
pain.line(x, y + size, x + size, y + size,
LColor::eolmarker);
} else
pain.fillRectangle(x, y, size, size,
LColor::eolmarker);
break;
}
case END_LABEL_STATIC:
{
LyXTextClass::LayoutList::size_type layout = row_ptr->par()->getLayout();
string const tmpstring = textclasslist.
Style(bview->buffer()->params.textclass,
layout).endlabelstring();
font = getFont(bview->buffer(), row_ptr->par(), -2);
int const tmpx = is_rtl ?
int(x) - lyxfont::width(tmpstring, font)
: ww - rightMargin(bview->buffer(), row_ptr) - row_ptr->fill();
pain.text( tmpx, y_offset + row_ptr->baseline(), tmpstring, font);
break;
}
case END_LABEL_NO_LABEL:
break;
}
}
// draw the text in the pixmap
vpos = row_ptr->pos();
Paragraph::size_type main_body =
beginningOfMainBody(bview->buffer(), row_ptr->par());
if (main_body > 0 &&
(main_body-1 > last ||
!row_ptr->par()->isLineSeparator(main_body - 1)))
main_body = 0;
while (vpos <= last) {
pos = vis2log(vpos);
if (main_body > 0 && pos == main_body - 1) {
x += fill_label_hfill
+ lyxfont::width(layout.labelsep,
getFont(bview->buffer(),
row_ptr->par(), -2))
- singleWidth(bview,
row_ptr->par(),
main_body - 1);
}
if (row_ptr->par() ->isHfill(pos)) {
x += 1;
pain.line(int(x),
y_offset + row_ptr->baseline() - defaultHeight() / 2,
int(x),
y_offset + row_ptr->baseline(),
LColor::vfillline);
if (hfillExpansion(bview->buffer(),
row_ptr, pos)) {
if (pos >= main_body) {
pain.line(int(x),
y_offset + row_ptr->baseline() - defaultHeight() / 4,
int(x + fill_hfill),
y_offset + row_ptr->baseline() - defaultHeight() / 4,
LColor::vfillline,
Painter::line_onoffdash);
x += fill_hfill;
} else {
pain.line(int(x),
y_offset + row_ptr->baseline() - defaultHeight() / 4,
int(x + fill_label_hfill),
y_offset + row_ptr->baseline() - defaultHeight() / 4,
LColor::vfillline,
Painter::line_onoffdash);
x += fill_label_hfill;
}
pain.line(int(x),
y_offset + row_ptr->baseline() - defaultHeight() / 2,
int(x),
y_offset + row_ptr->baseline(),
LColor::vfillline);
}
x += 2;
++vpos;
} else if (row_ptr->par()->isSeparator(pos)) {
x += singleWidth(bview,
row_ptr->par(), pos);
if (pos >= main_body)
x += fill_separator;
++vpos;
} else
draw(bview, row_ptr, vpos, y_offset, x, clear_area);
}
}
int LyXText::defaultHeight() const
{
LyXFont font(LyXFont::ALL_SANE);
return int(lyxfont::maxAscent(font) + lyxfont::maxDescent(font) * 1.5);
}
/* returns the column near the specified x-coordinate of the row
* x is set to the real beginning of this column */
int LyXText::getColumnNearX(BufferView * bview, Row * row, int & x,
bool & boundary) const
{
float tmpx = 0.0;
float fill_separator;
float fill_hfill;
float fill_label_hfill;
prepareToPrint(bview, row, tmpx, fill_separator,
fill_hfill, fill_label_hfill);
Paragraph::size_type vc = row->pos();
Paragraph::size_type last = rowLastPrintable(row);
Paragraph::size_type c = 0;
LyXLayout const & layout =
textclasslist.Style(bview->buffer()->params.textclass,
row->par()->getLayout());
bool left_side = false;
Paragraph::size_type
main_body = beginningOfMainBody(bview->buffer(), row->par());
float last_tmpx = tmpx;
if (main_body > 0 &&
(main_body - 1 > last ||
!row->par()->isLineSeparator(main_body - 1)))
main_body = 0;
while (vc <= last && tmpx <= x) {
c = vis2log(vc);
last_tmpx = tmpx;
if (main_body > 0 && c == main_body-1) {
tmpx += fill_label_hfill +
lyxfont::width(layout.labelsep,
getFont(bview->buffer(), row->par(), -2));
if (row->par()->isLineSeparator(main_body - 1))
tmpx -= singleWidth(bview, row->par(), main_body-1);
}
if (hfillExpansion(bview->buffer(), row, c)) {
x += singleWidth(bview, row->par(), c);
if (c >= main_body)
tmpx += fill_hfill;
else
tmpx += fill_label_hfill;
}
else if (row->par()->isSeparator(c)) {
tmpx += singleWidth(bview, row->par(), c);
if (c >= main_body)
tmpx+= fill_separator;
} else
tmpx += singleWidth(bview, row->par(), c);
++vc;
}
if ((tmpx + last_tmpx) / 2 > x) {
tmpx = last_tmpx;
left_side = true;
}
if (vc > last + 1) // This shouldn't happen.
vc = last + 1;
boundary = false;
bool const lastrow = lyxrc.rtl_support // This is not needed, but gives
// some speedup if rtl_support=false
&& (!row->next() || row->next()->par() != row->par());
bool const rtl = (lastrow)
? row->par()->isRightToLeftPar(bview->buffer()->params)
: false; // If lastrow is false, we don't need to compute
// the value of rtl.
if (row->pos() > last) // Row is empty?
c = row->pos();
else if (lastrow &&
( ( rtl && left_side && vc == row->pos() && x < tmpx - 5) ||
(!rtl && !left_side && vc == last + 1 && x > tmpx + 5) ))
c = last + 1;
else if (vc == row->pos()) {
c = vis2log(vc);
if (bidi_level(c) % 2 == 1)
++c;
} else {
c = vis2log(vc - 1);
bool const rtl = (bidi_level(c) % 2 == 1);
if (left_side == rtl) {
++c;
boundary = isBoundary(bview->buffer(), row->par(), c);
}
}
if (row->pos() <= last && c > last
&& row->par()->isNewline(last)) {
if (bidi_level(last) % 2 == 0)
tmpx -= singleWidth(bview, row->par(), last);
else
tmpx += singleWidth(bview, row->par(), last);
c = last;
}
c -= row->pos();
x = int(tmpx);
return c;
}
// returns pointer to a specified row
Row * LyXText::getRow(Paragraph * par,
Paragraph::size_type pos, int & y) const
{
if (!firstrow)
return 0;
Row * tmprow = firstrow;
y = 0;
// find the first row of the specified paragraph
while (tmprow->next() && tmprow->par() != par) {
y += tmprow->height();
tmprow = tmprow->next();
}
// now find the wanted row
while (tmprow->pos() < pos
&& tmprow->next()
&& tmprow->next()->par() == par
&& tmprow->next()->pos() <= pos) {
y += tmprow->height();
tmprow = tmprow->next();
}
return tmprow;
}