lyx_mirror/src/text.C

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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 "lyxtext.h"
#include "lyxrow.h"
#include "paragraph.h"
#include "gettext.h"
#include "bufferparams.h"
#include "buffer.h"
#include "debug.h"
#include "intl.h"
#include "lyxrc.h"
#include "encoding.h"
#include "frontends/LyXView.h"
#include "frontends/Painter.h"
#include "frontends/font_metrics.h"
#include "frontends/screen.h"
#include "frontends/WorkArea.h"
#include "bufferview_funcs.h"
#include "BufferView.h"
#include "language.h"
#include "ParagraphParameters.h"
#include "undo_funcs.h"
#include "WordLangTuple.h"
#include "paragraph_funcs.h"
#include "insets/insetbib.h"
#include "insets/insettext.h"
#include "support/textutils.h"
#include "support/LAssert.h"
#include "support/lstrings.h"
#include <algorithm>
using std::max;
using std::min;
using std::endl;
using std::pair;
using lyx::pos_type;
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::workWidth(BufferView * bview, Inset * inset) const
{
Paragraph * par = 0;
pos_type pos = -1;
par = inset->parOwner();
if (par)
pos = par->getPositionOfInset(inset);
if (!par || pos == -1) {
lyxerr << "LyXText::workWidth: something is wrong,"
" fall back to the brute force method" << endl;
Buffer::inset_iterator it = bview->buffer()->inset_iterator_begin();
Buffer::inset_iterator end = bview->buffer()->inset_iterator_end();
for (; it != end; ++it) {
if (&(*it) == inset) {
par = it.getPar();
pos = it.getPos();
break;
}
}
}
if (!par) {
return workWidth(bview);
}
LyXLayout_ptr const & layout = par->layout();
if (layout->margintype != MARGIN_RIGHT_ADDRESS_BOX) {
// Optimization here: in most cases, the real row is
// not needed, but only the par/pos values. So we just
// construct a dummy row for leftMargin. (JMarc)
Row dummyrow;
dummyrow.par(par);
dummyrow.pos(pos);
return workWidth(bview) - leftMargin(bview, &dummyrow);
} else {
int dummy_y;
Row * row = getRow(par, pos, dummy_y);
Row * frow = row;
while (frow->previous() && frow->par() == frow->previous()->par())
frow = frow->previous();
unsigned int maxw = 0;
while (frow->next() && frow->par() == frow->next()->par()) {
if ((frow != row) && (maxw < frow->width()))
maxw = frow->width();
frow = frow->next();
}
if (maxw)
return maxw;
}
return workWidth(bview);
}
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,
pos_type pos) const
{
if (!Encodings::is_arabic(c))
if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
return c + (0xb0 - '0');
else
return c;
unsigned char const prev_char = pos > 0 ? par->getChar(pos-1) : ' ';
unsigned char next_char = ' ';
for (pos_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,
pos_type pos) const
{
char const c = par->getChar(pos);
return singleWidth(bview, par, pos, c);
}
int LyXText::singleWidth(BufferView * bview, Paragraph * par,
pos_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 font_metrics::width(c, font);
} else if (IsHfillChar(c)) {
// Because of the representation as vertical lines
return 3;
} else if (c == Paragraph::META_INSET) {
Inset * tmpinset = par->getInset(pos);
if (tmpinset) {
#if 1
// this IS needed otherwise on initialitation we don't get the fill
// of the row right (ONLY on initialization if we read a file!)
// should be changed! (Jug 20011204)
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 font_metrics::width(c, font);
}
// Returns the paragraph position of the last character in the specified row
pos_type LyXText::rowLast(Row const * row) const
{
if (!row->next() || row->next()->par() != row->par()) {
return row->par()->size() - 1;
} else {
return row->next()->pos() - 1;
}
}
pos_type LyXText::rowLastPrintable(Row const * row) const
{
pos_type const last = rowLast(row);
bool ignore_the_space_on_the_last_position = true;
Inset * ins;
// we have to consider a space on the last position in this case!
if (row->next() && row->par() == row->next()->par() &&
row->next()->par()->getChar(last+1) == Paragraph::META_INSET &&
(ins=row->next()->par()->getInset(last+1)) &&
(ins->needFullRow() || ins->display()))
{
ignore_the_space_on_the_last_position = false;
}
if (last >= row->pos()
&& row->next()
&& row->next()->par() == row->par()
&& row->par()->isSeparator(last)
&& ignore_the_space_on_the_last_position)
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;
}
Inset * inset = row->par()->inInset();
if (inset && inset->owner() &&
inset->owner()->lyxCode() == Inset::ERT_CODE) {
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<pos_type>(log2vis_list.size())) {
pos_type new_size =
(bidi_end + 2 - bidi_start < 500) ?
500 : 2 * (bidi_end + 2 - bidi_start);
log2vis_list.resize(new_size);
vis2log_list.resize(new_size);
bidi_levels.resize(new_size);
}
vis2log_list[bidi_end + 1 - bidi_start] = -1;
log2vis_list[bidi_end + 1 - bidi_start] = -1;
pos_type stack[2];
bool const rtl_par =
row->par()->isRightToLeftPar(buf->params);
int level = 0;
bool rtl = false;
bool rtl0 = false;
pos_type const main_body = beginningOfMainBody(buf, row->par());
for (pos_type lpos = bidi_start; lpos <= bidi_end; ++lpos) {
bool is_space = row->par()->isLineSeparator(lpos);
pos_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) {
pos_type old_lpos = stack[--level];
int delta = lpos - old_lpos - 1;
if (level % 2)
delta = -delta;
log2vis_list[lpos - bidi_start] += delta;
log2vis_list[old_lpos - bidi_start] += delta;
}
while (level < new_level)
stack[level++] = lpos;
}
while (level > 0) {
pos_type const old_lpos = stack[--level];
int delta = bidi_end - old_lpos;
if (level % 2)
delta = -delta;
log2vis_list[old_lpos - bidi_start] += delta;
}
pos_type vpos = bidi_start - 1;
for (pos_type lpos = bidi_start;
lpos <= bidi_end; ++lpos) {
vpos += log2vis_list[lpos - bidi_start];
vis2log_list[vpos - bidi_start] = lpos;
log2vis_list[lpos - bidi_start] = vpos;
}
}
// This method requires a previous call to ComputeBidiTables()
bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
pos_type pos) const
{
if (!lyxrc.rtl_support || pos == 0)
return false;
if (!bidi_InRange(pos - 1)) {
/// This can happen if pos is the first char of a row.
/// Returning false in this case is incorrect!
return false;
}
bool const rtl = bidi_level(pos - 1) % 2;
bool const rtl2 = bidi_InRange(pos)
? bidi_level(pos) % 2
: par->isRightToLeftPar(buf->params);
return rtl != rtl2;
}
bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
pos_type pos, LyXFont const & font) const
{
if (!lyxrc.rtl_support)
return false; // This is just for speedup
bool const rtl = font.isVisibleRightToLeft();
bool const rtl2 = bidi_InRange(pos)
? bidi_level(pos) % 2
: par->isRightToLeftPar(buf->params);
return rtl != rtl2;
}
void LyXText::drawNewline(DrawRowParams & p, pos_type const pos)
{
// Draw end-of-line marker
LyXFont const font = getFont(p.bv->buffer(), p.row->par(), pos);
int const wid = font_metrics::width('n', font);
int const asc = font_metrics::maxAscent(font);
int const y = p.yo + p.row->baseline();
int xp[3];
int yp[3];
yp[0] = int(y - 0.875 * asc * 0.75);
yp[1] = int(y - 0.500 * asc * 0.75);
yp[2] = int(y - 0.125 * asc * 0.75);
if (bidi_level(pos) % 2 == 0) {
xp[0] = int(p.x + wid * 0.375);
xp[1] = int(p.x);
xp[2] = int(p.x + wid * 0.375);
} else {
xp[0] = int(p.x + wid * 0.625);
xp[1] = int(p.x + wid);
xp[2] = int(p.x + wid * 0.625);
}
p.pain->lines(xp, yp, 3, LColor::eolmarker);
yp[0] = int(y - 0.500 * asc * 0.75);
yp[1] = int(y - 0.500 * asc * 0.75);
yp[2] = int(y - asc * 0.75);
if (bidi_level(pos) % 2 == 0) {
xp[0] = int(p.x);
xp[1] = int(p.x + wid);
xp[2] = int(p.x + wid);
} else {
xp[0] = int(p.x + wid);
xp[1] = int(p.x);
xp[2] = int(p.x);
}
p.pain->lines(xp, yp, 3, LColor::eolmarker);
p.x += wid;
}
bool LyXText::drawInset(DrawRowParams & p, pos_type const pos)
{
Inset * inset = p.row->par()->getInset(pos);
// FIXME: shouldn't happen
if (!inset) {
return true;
}
LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
// we need this here as the row pointer may be illegal
// at a later time (Jug20020502)
Row * prev = p.row->previous();
inset->update(p.bv, font, false);
inset->draw(p.bv, font, p.yo + p.row->baseline(), p.x, p.cleared);
if (!need_break_row && !inset_owner
&& p.bv->text->status() == CHANGED_IN_DRAW) {
if (prev && prev->par() == p.row->par()) {
breakAgainOneRow(p.bv, prev);
if (prev->next() != p.row) {
// breakAgainOneRow() has removed p.row
p.row = 0; // see what this breaks
need_break_row = prev;
} else {
need_break_row = p.row;
}
} else if (!prev) {
need_break_row = firstrow;
} else {
need_break_row = prev->next();
}
setCursor(p.bv, cursor.par(), cursor.pos());
return false;
}
return true;
}
void LyXText::drawForeignMark(DrawRowParams & p, float const orig_x, LyXFont const & orig_font)
{
if (!lyxrc.mark_foreign_language)
return;
if (orig_font.language() == latex_language)
return;
if (orig_font.language() == p.bv->buffer()->params.language)
return;
int const y = p.yo + p.row->height() - 1;
p.pain->line(int(orig_x), y, int(p.x), y, LColor::language);
}
void LyXText::drawHebrewComposeChar(DrawRowParams & p, pos_type & vpos)
{
pos_type pos = vis2log(vpos);
string str;
// first char
char c = p.row->par()->getChar(pos);
str += c;
++vpos;
LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
int const width = font_metrics::width(c, font);
int dx = 0;
for (pos_type i = pos-1; i >= 0; --i) {
c = p.row->par()->getChar(i);
if (!Encodings::IsComposeChar_hebrew(c)) {
if (IsPrintableNonspace(c)) {
int const width2 =
singleWidth(p.bv, p.row->par(), i, c);
// dalet / resh
dx = (c == '<EFBFBD>' || c == '<EFBFBD>')
? width2 - width
: (width2 - width) / 2;
}
break;
}
}
// Draw nikud
p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
}
void LyXText::drawArabicComposeChar(DrawRowParams & p, pos_type & vpos)
{
pos_type pos = vis2log(vpos);
string str;
// first char
char c = p.row->par()->getChar(pos);
c = transformChar(c, p.row->par(), pos);
str +=c;
++vpos;
LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
int const width = font_metrics::width(c, font);
int dx = 0;
for (pos_type i = pos-1; i >= 0; --i) {
c = p.row->par()->getChar(i);
if (!Encodings::IsComposeChar_arabic(c)) {
if (IsPrintableNonspace(c)) {
int const width2 =
singleWidth(p.bv, p.row->par(), i, c);
dx = (width2 - width) / 2;
}
break;
}
}
// Draw nikud
p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
}
void LyXText::drawChars(DrawRowParams & p, pos_type & vpos,
bool hebrew, bool arabic)
{
pos_type pos = vis2log(vpos);
pos_type const last = rowLastPrintable(p.row);
LyXFont const & orig_font = getFont(p.bv->buffer(), p.row->par(), pos);
// first character
string str;
str += p.row->par()->getChar(pos);
if (arabic) {
unsigned char c = str[0];
str[0] = transformChar(c, p.row->par(), pos);
}
++vpos;
// collect as much similar chars as we can
while (vpos <= last && (pos = vis2log(vpos)) >= 0) {
char c = p.row->par()->getChar(pos);
if (!IsPrintableNonspace(c))
break;
if (arabic && Encodings::IsComposeChar_arabic(c))
break;
if (hebrew && Encodings::IsComposeChar_hebrew(c))
break;
if (orig_font != getFont(p.bv->buffer(), p.row->par(), pos))
break;
if (arabic)
c = transformChar(c, p.row->par(), pos);
str += c;
++vpos;
}
// Draw text and set the new x position
p.pain->text(int(p.x), p.yo + p.row->baseline(), str, orig_font);
p.x += font_metrics::width(str, orig_font);
}
bool LyXText::draw(DrawRowParams & p, pos_type & vpos)
{
pos_type const pos = vis2log(vpos);
Paragraph * par = p.row->par();
LyXFont const & orig_font = getFont(p.bv->buffer(), par, pos);
float const orig_x = p.x;
char const c = par->getChar(pos);
if (IsNewlineChar(c)) {
++vpos;
drawNewline(p, pos);
return true;
} else if (IsInsetChar(c)) {
if (!drawInset(p, pos))
return false;
++vpos;
drawForeignMark(p, orig_x, orig_font);
return true;
}
// usual characters, no insets
// special case languages
bool const hebrew = (orig_font.language()->lang() == "hebrew");
bool const arabic =
orig_font.language()->lang() == "arabic" &&
(lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
lyxrc.font_norm_type == LyXRC::ISO_10646_1);
// draw as many chars as we can
if ((!hebrew && !arabic)
|| (hebrew && !Encodings::IsComposeChar_hebrew(c))
|| (arabic && !Encodings::IsComposeChar_arabic(c))) {
drawChars(p, vpos, hebrew, arabic);
} else if (hebrew) {
drawHebrewComposeChar(p, vpos);
} else if (arabic) {
drawArabicComposeChar(p, vpos);
}
drawForeignMark(p, orig_x, orig_font);
return true;
}
int LyXText::leftMargin(BufferView * bview, Row const * row) const
{
Inset * ins;
if ((row->par()->getChar(row->pos()) == Paragraph::META_INSET) &&
(ins=row->par()->getInset(row->pos())) &&
(ins->needFullRow() || ins->display()))
return LYX_PAPER_MARGIN;
LyXTextClass const & tclass =
bview->buffer()->params.getLyXTextClass();
LyXLayout_ptr const & layout = row->par()->layout();
string parindent = layout->parindent;
int x = LYX_PAPER_MARGIN;
x += font_metrics::signedWidth(tclass.leftmargin(), tclass.defaultfont());
// this is the way, LyX handles the LaTeX-Environments.
// I have had this idea very late, so it seems to be a
// later added hack and this is true
if (!row->par()->getDepth()) {
if (row->par()->layout() == tclass.defaultLayout()) {
// find the previous same level paragraph
if (row->par()->previous()) {
Paragraph * newpar = row->par()
->depthHook(row->par()->getDepth());
if (newpar &&
newpar->layout()->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 && newpar->layout()->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()->layout() == tclass.defaultLayout()) {
if (newpar->params().noindent())
parindent.erase();
else {
parindent = newpar->layout()->parindent;
}
}
}
LyXFont const labelfont = getLabelFont(bview->buffer(), row->par());
switch (layout->margintype) {
case MARGIN_DYNAMIC:
if (!layout->leftmargin.empty()) {
x += font_metrics::signedWidth(layout->leftmargin,
tclass.defaultfont());
}
if (!row->par()->getLabelstring().empty()) {
x += font_metrics::signedWidth(layout->labelindent,
labelfont);
x += font_metrics::width(row->par()->getLabelstring(),
labelfont);
x += font_metrics::width(layout->labelsep, labelfont);
}
break;
case MARGIN_MANUAL:
x += font_metrics::signedWidth(layout->labelindent, labelfont);
if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
if (!row->par()->getLabelWidthString().empty()) {
x += font_metrics::width(row->par()->getLabelWidthString(),
labelfont);
x += font_metrics::width(layout->labelsep, labelfont);
}
}
break;
case MARGIN_STATIC:
x += font_metrics::signedWidth(layout->leftmargin, tclass.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 += font_metrics::signedWidth(layout->leftmargin,
labelfont);
} else {
x += font_metrics::signedWidth(layout->labelindent,
labelfont);
}
} else if (row->pos()
// Special case to fix problems with
// theorems (JMarc)
|| (layout->labeltype == LABEL_STATIC
&& layout->latextype == LATEX_ENVIRONMENT
&& ! row->par()->isFirstInSequence())) {
x += font_metrics::signedWidth(layout->leftmargin,
labelfont);
} else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
&& layout->labeltype != LABEL_BIBLIO
&& layout->labeltype !=
LABEL_CENTERED_TOP_ENVIRONMENT) {
x += font_metrics::signedWidth(layout->labelindent,
labelfont);
x += font_metrics::width(layout->labelsep, labelfont);
x += font_metrics::width(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 += font_metrics::signedWidth(layout->leftmargin,
tclass.defaultfont());
x += minfill;
}
break;
}
if ((workWidth(bview) > 0) &&
!row->par()->params().leftIndent().zero())
{
LyXLength const len = row->par()->params().leftIndent();
int const tw = inset_owner ?
inset_owner->latexTextWidth(bview) : workWidth(bview);
x += len.inPixels(tw);
}
LyXAlignment 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()
// in tabulars and ert paragraphs are never indented!
&& (!row->par()->inInset() || !row->par()->inInset()->owner() ||
(row->par()->inInset()->owner()->lyxCode() != Inset::TABULAR_CODE &&
row->par()->inInset()->owner()->lyxCode() != Inset::ERT_CODE))
&& (row->par()->layout() != tclass.defaultLayout() ||
bview->buffer()->params.paragraph_separation ==
BufferParams::PARSEP_INDENT)) {
x += font_metrics::signedWidth(parindent,
tclass.defaultfont());
} else if (layout->labeltype == LABEL_BIBLIO) {
// ale970405 Right width for bibitems
x += bibitemMaxWidth(bview, tclass.defaultfont());
}
}
return x;
}
int LyXText::rightMargin(Buffer const * buf, Row const * row) const
{
Inset * ins;
if ((row->par()->getChar(row->pos()) == Paragraph::META_INSET) &&
(ins=row->par()->getInset(row->pos())) &&
(ins->needFullRow() || ins->display()))
return LYX_PAPER_MARGIN;
LyXTextClass const & tclass = buf->params.getLyXTextClass();
LyXLayout_ptr const & layout = row->par()->layout();
int x = LYX_PAPER_MARGIN
+ font_metrics::signedWidth(tclass.rightmargin(),
tclass.defaultfont());
// this is the way, LyX handles the LaTeX-Environments.
// I have had this idea very late, so it seems to be a
// later added hack and this is true
if (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 && newpar->layout()->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 += font_metrics::signedWidth(layout->rightmargin,
tclass.defaultfont())
* 4 / (row->par()->getDepth() + 4);
return x;
}
int LyXText::labelEnd(BufferView * bview, Row const * row) const
{
if (row->par()->layout()->margintype == MARGIN_MANUAL) {
Row tmprow;
tmprow = *row;
tmprow.pos(row->par()->size());
// just the beginning of the main body
return leftMargin(bview, &tmprow);
} else {
// LabelEnd is only needed,
// if the layout fills a flushleft label.
return 0;
}
}
// get the next breakpoint in a given paragraph
pos_type
LyXText::nextBreakPoint(BufferView * bview, Row const * row, int width) const
{
Paragraph * par = row->par();
if (width < 0)
return par->size();
pos_type const pos = row->pos();
// position of the last possible breakpoint
// -1 isn't a suitable value, but a flag
pos_type last_separator = -1;
width -= rightMargin(bview->buffer(), row);
pos_type const main_body =
beginningOfMainBody(bview->buffer(), par);
LyXLayout_ptr const & layout = par->layout();
pos_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->isInset(i) && par->getInset(i)
&& par->getInset(i)->display()) {
par->getInset(i)->display(false);
}
++i;
}
} else {
// Last position is an invariant
pos_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);
Inset * in = 0;
if (c == Paragraph::META_INSET)
in = par->getInset(i);
if (IsNewlineChar(c)) {
last_separator = i;
x = width; // this means break
} else if (in && !in->isChar()) {
// check wether a Display() inset is
// valid here. if not, change it to
// non-display
if (in->display() &&
(layout->isCommand() ||
(layout->labeltype == LABEL_MANUAL
&& i < beginningOfMainBody(bview->buffer(), par))))
{
// display istn't allowd
in->display(false);
x += singleWidth(bview, par, i, c);
} else if (in->display() || in->needFullRow()) {
// So break the line here
if (i == pos) {
if (pos < last-1) {
last_separator = i;
if (par->isLineSeparator(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);
// we have to check this separately as we could have a
// lineseparator and then the algorithm below would prefer
// that which IS wrong! We should always break on an inset
// if it's too long and not on the last separator.
// Maybe the only exeption is insets used as chars but
// then we would have to have a special function inside
// the inset to tell us this. Till then we leave it as
// it is now. (Jug 20020106)
if (pos < i && x >= width && last_separator >= 0)
last_separator = i - 1;
}
} else {
if (par->isLineSeparator(i))
last_separator = i;
x += singleWidth(bview, par, i, c);
}
++i;
if (i == main_body) {
x += font_metrics::width(layout->labelsep,
getLabelFont(bview->buffer(), par));
if (par->isLineSeparator(i - 1))
x-= singleWidth(bview, par, i - 1);
int left_margin = labelEnd(bview, row);
if (x < left_margin)
x = left_margin;
}
}
if ((pos+1 < i) && (last_separator < 0) && (x >= width))
last_separator = i - 2;
else if ((pos < i) && (last_separator < 0) && (x >= width))
last_separator = i - 1;
// end of paragraph is always a suitable separator
else 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 0;
int w;
// get the pure distance
pos_type const last = rowLastPrintable(row);
// special handling of the right address boxes
if (row->par()->layout()->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_ptr const & layout = row->par()->layout();
pos_type const main_body =
beginningOfMainBody(bview->buffer(), row->par());
pos_type i = row->pos();
while (i <= last) {
if (main_body > 0 && i == main_body) {
w += font_metrics::width(layout->labelsep, getLabelFont(bview->buffer(), row->par()));
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 += font_metrics::width(layout->labelsep, getLabelFont(bview->buffer(), row->par()));
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);
return fill;
}
// returns the minimum space a manual label needs on the screen in pixel
int LyXText::labelFill(BufferView * bview, Row const * row) const
{
pos_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;
// a separator at this end does not count
if (row->par()->isLineSeparator(last))
--last;
int w = 0;
pos_type i = row->pos();
while (i <= last) {
w += singleWidth(bview, row->par(), i);
++i;
}
int fill = 0;
if (!row->par()->params().labelWidthString().empty()) {
fill = max(font_metrics::width(row->par()->params().labelWidthString(),
getLabelFont(bview->buffer(), row->par())) - 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
{
pos_type last = rowLastPrintable(row);
pos_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
{
pos_type const last = rowLast(row);
pos_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 (pos_type 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
{
pos_type last = rowLast(row);
pos_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 (pos_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,
pos_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
// unless another hfill exists on the line
if (pos >= rowLast(row_ptr)) {
pos_type i = row_ptr->pos();
while (i < pos && !row_ptr->par()->isHfill(i)) {
++i;
}
if (i == pos) {
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 (row_ptr->par()->layout()->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
pos_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;
// 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_ptr const & layout = firstpar->layout();
// 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 = getLayoutFont(bview->buffer(), par);
LyXFont::FONT_SIZE const size = font.size();
font.setSize(tmpsize);
LyXFont labelfont = getLabelFont(bview->buffer(), par);
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(font_metrics::maxAscent(font) *
layout->spacing.getValue() *
spacing_val);
int maxdesc = int(font_metrics::maxDescent(font) *
layout->spacing.getValue() *
spacing_val);
pos_type const pos_end = rowLast(row_ptr);
int labeladdon = 0;
int maxwidth = 0;
// Check if any insets are larger
for (pos_type pos = row_ptr->pos(); pos <= pos_end; ++pos) {
if (row_ptr->par()->isInset(pos)) {
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 = font_metrics::maxAscent(font);
desc = font_metrics::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() &&
firstpar->previous()->layout()->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
maxasc += getLengthMarkerHeight(bview, firstpar->params().spaceTop());
// do not forget the DTP-lines!
// there height depends on the font of the nearest character
if (firstpar->params().lineTop())
maxasc += 2 * font_metrics::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(font_metrics::maxDescent(labelfont) *
layout->spacing.getValue() *
spacing_val)
+ int(font_metrics::maxAscent(labelfont) *
layout->spacing.getValue() *
spacing_val);
}
// special code for the top label
if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
|| layout->labeltype == LABEL_BIBLIO
|| layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
&& 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(
(font_metrics::maxAscent(labelfont) *
layout->spacing.getValue() *
spacing_val)
+(font_metrics::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->layout() == firstpar->layout() &&
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 -= row_ptr->previous()->par()->layout()->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(prev->layout()->parsep * defaultHeight());
} else {
if (firstpar->previous() &&
firstpar->previous()->getDepth() == 0 &&
firstpar->previous()->layout() !=
firstpar->layout())
{
// 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
maxdesc += getLengthMarkerHeight(bview, firstpar->params().spaceBottom());
// do not forget the DTP-lines!
// there height depends on the font of the nearest character
if (firstpar->params().lineBottom())
maxdesc += 2 * font_metrics::ascent('x',
getFont(bview->buffer(),
par,
max(pos_type(0), 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 = (comparepar->layout()->bottomsep * defaultHeight());
comparepar = comparepar->depthHook(nextpar->getDepth());
if (comparepar->layout()!= nextpar->layout()
|| nextpar->getLabelWidthString() !=
comparepar->getLabelWidthString())
{
unusual = (comparepar->layout()->bottomsep * defaultHeight());
}
if (unusual > usual)
layoutdesc = unusual;
else
layoutdesc = usual;
} else if (comparepar->getDepth() == nextpar->getDepth()) {
if (comparepar->layout() != nextpar->layout()
|| nextpar->getLabelWidthString() !=
comparepar->getLabelWidthString())
layoutdesc = int(comparepar->layout()->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 = 0;
if (layout->margintype != MARGIN_RIGHT_ADDRESS_BOX) {
float dummy;
// this IS needed
row_ptr->width(maxwidth);
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)
pos_type const lastposition = row->par()->size();
do {
// Get the next breakpoint
pos_type 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
// fixed fill setting now by calling inset->update() in
// SingleWidth when needed!
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
pos_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
pos_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)
{
LyXTextClass const & tclass =
bview->buffer()->params.getLyXTextClass();
LyXLayout_ptr const & layout = cursor.par()->layout();
// this is only allowed, if the current paragraph is not empty or caption
// and if it has not the keepempty flag aktive
if (cursor.par()->empty()
&& layout->labeltype != LABEL_SENSITIVE
&& !layout->keepempty)
return;
setUndo(bview, Undo::FINISH, 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();
// we need to set this before we insert the paragraph. IMO the
// breakParagraph call should return a bool if it inserts the
// paragraph before or behind and we should react on that one
// but we can fix this in 1.3.0 (Jug 20020509)
bool const isempty = (layout->keepempty && cursor.par()->empty());
::breakParagraph(bview->buffer()->params, cursor.par(), 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()->applyLayout(tclass.defaultLayout());
else
// set to standard-layout
cursor.par()->next()->applyLayout(tclass.defaultLayout());
}
// if the cursor is at the beginning of a row without prior newline,
// move one row up!
// This touches only the screen-update. Otherwise we would may have
// an empty row on the screen
if (cursor.pos() && !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()->empty()
&& cursor.par()->next()->isNewline(0))
cursor.par()->next()->erase(0);
insertParagraph(bview, cursor.par()->next(), cursor.row());
updateCounters(bview);
// This check is necessary. Otherwise the new empty paragraph will
// be deleted automatically. And it is more friendly for the user!
if (cursor.pos() || isempty)
setCursor(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 = cursor.row()->par()->layout()->free_spacing ||
cursor.row()->par()->isFreeSpacing();
if (lyxrc.auto_number) {
static string const number_operators = "+-/*";
static string const number_unary_operators = "+-";
static string const number_seperators = ".,:";
if (current_font.number() == LyXFont::ON) {
if (!IsDigit(c) && !contains(number_operators, c) &&
!(contains(number_seperators, c) &&
cursor.pos() >= 1 &&
cursor.pos() < cursor.par()->size() &&
getFont(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
pos_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.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()->isInset(cursor.row()->pos())) {
Inset * inset = cursor.row()->par()->getInset(cursor.row()->pos());
if (inset && (inset->display() || inset->needFullRow())) {
// force a new break
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 (row->previous() && row->previous()->par() == row->par()
&& (cursor.par()->isLineSeparator(cursor.pos())
|| cursor.par()->isNewline(cursor.pos())
|| ((cursor.pos() < cursor.par()->size()) &&
cursor.par()->isInset(cursor.pos()+1))
|| cursor.row()->fill() == -1))
{
pos_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 (c == Paragraph::META_INSET || row->fill() < 0) {
refresh_y = y;
refresh_row = row;
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_row = row;
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 (cursor.par()->layout()->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
LyXLayout_ptr const & layout = row->par()->layout();
if (layout->margintype == MARGIN_MANUAL
&& layout->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) {
if (w > 0)
fill_hfill = w / nh;
// we don't have to look at the alignment if it is ALIGN_LEFT and
// if the row is already larger then the permitted width as then
// we force the LEFT_ALIGN'edness!
} else if (static_cast<int>(row->width()) < workWidth(bview)) {
// is it block, flushleft or flushright?
// set x how you need it
int align;
if (row->par()->params().align() == LYX_ALIGN_LAYOUT) {
align = layout->align;
} else {
align = row->par()->params().align();
}
// center displayed insets
Inset * inset;
if (row->par()->isInset(row->pos())
&& (inset=row->par()->getInset(row->pos()))
&& (inset->display())) // || (inset->scroll() < 0)))
align = (inset->lyxCode() == Inset::MATHMACRO_CODE)
? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
// ERT insets should always be LEFT ALIGNED on screen
inset = row->par()->inInset();
if (inset && inset->owner() &&
inset->owner()->lyxCode() == Inset::ERT_CODE)
{
align = LYX_ALIGN_LEFT;
}
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()->isInset(row->next()->pos())
&& 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) {
pos_type main_body =
beginningOfMainBody(bview->buffer(), row->par());
pos_type last = rowLast(row);
if (main_body > 0 &&
(main_body - 1 > last ||
!row->par()->isLineSeparator(main_body - 1))) {
x += font_metrics::width(layout->labelsep,
getLabelFont(bview->buffer(), row->par()));
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.par()->isInset(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.
WordLangTuple const
LyXText::selectNextWordToSpellcheck(BufferView * bview, float & value) const
{
if (the_locking_inset) {
WordLangTuple word = the_locking_inset->selectNextWordToSpellcheck(bview, value);
if (!word.word().empty()) {
value += float(cursor.y());
value /= float(height);
return word;
}
// we have to go on checking so move cursor to the next char
if (cursor.pos() == cursor.par()->size()) {
if (!cursor.par()->next())
return word;
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()))
&& (!cursor.par()->isInset(cursor.pos()) ||
!cursor.par()->getInset(cursor.pos())->allowSpellcheck()))
|| (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->selectNextWordToSpellcheck(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;
string lang_code(
getFont(bview->buffer(), cursor.par(), cursor.pos())
.language()->code());
// and find the end of the word (insets like optional hyphens
// and ligature break are part of a word)
while (cursor.pos() < cursor.par()->size()
&& (cursor.par()->isLetter(cursor.pos())))
cursor.pos(cursor.pos() + 1);
// Finally, we copy the word to a string and return it
string str;
if (selection.cursor.pos() < cursor.pos()) {
pos_type i;
for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
if (!cursor.par()->isInset(i))
str += cursor.par()->getChar(i);
}
}
return WordLangTuple(str, lang_code);
}
// This one is also only for the spellchecker
void LyXText::selectSelectedWord(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;
// now find the end of the word
while (cursor.pos() < cursor.par()->size()
&& (cursor.par()->isLetter(cursor.pos())))
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()->empty())
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, true, false);
}
}
// Delete from cursor to start of current or prior word.
void LyXText::deleteWordBackward(BufferView * bview)
{
if (cursor.par()->empty())
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, true, false);
}
}
// Kill to end of line.
void LyXText::deleteLineForward(BufferView * bview)
{
if (cursor.par()->empty())
// 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, true, false);
}
}
}
// 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());
pos_type pos = from.pos();
Paragraph * par = from.par();
while (par && (pos != to.pos() || par != to.par())) {
if (pos == par->size()) {
par = par->next();
pos = 0;
continue;
}
unsigned char c = par->getChar(pos);
if (!IsInsetChar(c) && !IsHfillChar(c)) {
switch (action) {
case text_lowercase:
c = lowercase(c);
break;
case text_capitalization:
c = uppercase(c);
action = text_lowercase;
break;
case text_uppercase:
c = uppercase(c);
break;
}
}
par->setChar(pos, c);
checkParagraph(bview, par, pos);
++pos;
}
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());
pos_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) {
// delete-empty-paragraph-mechanism has done it
return;
}
// if you had success make a backspace
if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
LyXCursor tmpcursor = cursor;
// to make sure undo gets the right cursor position
cursor = old_cursor;
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
pos_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()->layout() == tmppar->layout()
&& 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
LyXTextClass const & tclass =
bview->buffer()->params.getLyXTextClass();
if (cursor.par() != tmppar
&& (cursor.par()->layout() == tmppar->layout()
|| tmppar->layout() == tclass.defaultLayout())
&& cursor.par()->getAlign() == tmppar->getAlign()) {
removeParagraph(tmprow);
removeRow(tmprow);
mergeParagraph(bview->buffer()->params, cursor.par());
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);
// 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()->isInset(cursor.pos())) {
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();
pos_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()->empty() &&
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 (cursor.par()->layout()->margintype
== MARGIN_RIGHT_ADDRESS_BOX) {
redoDrawingOfParagraph(bview, cursor);
}
}
}
bool LyXText::paintRowBackground(DrawRowParams & p)
{
bool clear_area = true;
Inset * inset = 0;
LyXFont font(LyXFont::ALL_SANE);
pos_type const last = rowLastPrintable(p.row);
if (!p.bv->screen().forceClear() && last == p.row->pos()
&& p.row->par()->isInset(p.row->pos())) {
inset = p.row->par()->getInset(p.row->pos());
if (inset) {
clear_area = inset->doClearArea();
}
}
if (p.cleared) {
return true;
}
if (clear_area) {
int const x = p.xo;
int const y = p.yo < 0 ? 0 : p.yo;
int const h = p.yo < 0 ? p.row->height() + p.yo : p.row->height();
p.pain->fillRectangle(x, y, p.width, h, backgroundColor());
return true;
}
if (inset == 0)
return false;
int h = p.row->baseline() - inset->ascent(p.bv, font);
// first clear the whole row above the inset!
if (h > 0) {
p.pain->fillRectangle(p.xo, p.yo, p.width, h, backgroundColor());
}
// clear the space below the inset!
h += inset->ascent(p.bv, font) + inset->descent(p.bv, font);
if ((p.row->height() - h) > 0) {
p.pain->fillRectangle(p.xo, p.yo + h,
p.width, p.row->height() - h, backgroundColor());
}
// clear the space behind the inset, if needed
if (!inset->display() && !inset->needFullRow()) {
int const xp = int(p.x) + inset->width(p.bv, font);
if (p.width - xp > 0) {
p.pain->fillRectangle(xp, p.yo, p.width - xp,
p.row->height(), backgroundColor());
}
}
return false;
}
void LyXText::paintRowSelection(DrawRowParams & p)
{
bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
// the current selection
int const startx = selection.start.x();
int const endx = selection.end.x();
int const starty = selection.start.y();
int const endy = selection.end.y();
Row const * startrow = selection.start.row();
Row const * endrow = selection.end.row();
Row * row = p.row;
if (bidi_same_direction) {
int x;
int y = p.yo;
int w;
int h = row->height();
if (startrow == row && endrow == row) {
if (startx < endx) {
x = p.xo + startx;
w = endx - startx;
p.pain->fillRectangle(x, y, w, h, LColor::selection);
} else {
x = p.xo + endx;
w = startx - endx;
p.pain->fillRectangle(x, y, w, h, LColor::selection);
}
} else if (startrow == row) {
int const x = (is_rtl) ? p.xo : (p.xo + startx);
int const w = (is_rtl) ? startx : (p.width - startx);
p.pain->fillRectangle(x, y, w, h, LColor::selection);
} else if (endrow == row) {
int const x = (is_rtl) ? (p.xo + endx) : p.xo;
int const w = (is_rtl) ? (p.width - endx) : endx;
p.pain->fillRectangle(x, y, w, h, LColor::selection);
} else if (p.y > starty && p.y < endy) {
p.pain->fillRectangle(p.xo, y, p.width, h, LColor::selection);
}
return;
} else if (startrow != row && endrow != row) {
if (p.y > starty && p.y < endy) {
int w = p.width;
int h = row->height();
p.pain->fillRectangle(p.xo, p.yo, w, h, LColor::selection);
}
return;
}
if ((startrow != row && !is_rtl) || (endrow != row && is_rtl))
p.pain->fillRectangle(p.xo, p.yo, int(p.x), row->height(), LColor::selection);
Buffer const * buffer = p.bv->buffer();
Paragraph * par = row->par();
pos_type main_body = beginningOfMainBody(buffer, par);
pos_type const last = rowLastPrintable(row);
float tmpx = p.x;
for (pos_type vpos = row->pos(); vpos <= last; ++vpos) {
pos_type pos = vis2log(vpos);
float const old_tmpx = tmpx;
if (main_body > 0 && pos == main_body - 1) {
LyXLayout_ptr const & layout = par->layout();
LyXFont const lfont = getLabelFont(buffer, par);
tmpx += p.label_hfill + font_metrics::width(layout->labelsep, lfont);
if (par->isLineSeparator(main_body - 1))
tmpx -= singleWidth(p.bv, par, main_body - 1);
}
if (hfillExpansion(buffer, row, pos)) {
tmpx += singleWidth(p.bv, par, pos);
if (pos >= main_body)
tmpx += p.hfill;
else
tmpx += p.label_hfill;
}
else if (par->isSeparator(pos)) {
tmpx += singleWidth(p.bv, par, pos);
if (pos >= main_body)
tmpx += p.separator;
} else {
tmpx += singleWidth(p.bv, par, pos);
}
if ((startrow != row || selection.start.pos() <= pos) &&
(endrow != row || pos < selection.end.pos())) {
// Here we do not use p.x as p.xo was added to p.x.
p.pain->fillRectangle(int(old_tmpx), p.yo,
int(tmpx - old_tmpx + 1),
row->height(), LColor::selection);
}
}
if ((startrow != row && is_rtl) || (endrow != row && !is_rtl)) {
p.pain->fillRectangle(p.xo + int(tmpx),
p.yo, int(p.bv->workWidth() - tmpx),
row->height(), LColor::selection);
}
}
void LyXText::paintRowAppendix(DrawRowParams & p)
{
// FIXME: can be just p.width ?
int const ww = p.bv->workWidth();
Paragraph * firstpar = p.row->par();
if (firstpar->params().appendix()) {
p.pain->line(1, p.yo, 1, p.yo + p.row->height(), LColor::appendixline);
p.pain->line(ww - 2, p.yo, ww - 2, p.yo + p.row->height(), LColor::appendixline);
}
}
void LyXText::paintRowDepthBar(DrawRowParams & p)
{
Paragraph::depth_type const depth = p.row->par()->getDepth();
if (depth <= 0)
return;
Paragraph::depth_type prev_depth = 0;
if (p.row->previous())
prev_depth = p.row->previous()->par()->getDepth();
Paragraph::depth_type next_depth = 0;
if (p.row->next())
next_depth = p.row->next()->par()->getDepth();
for (Paragraph::depth_type i = 1; i <= depth; ++i) {
int const x = (LYX_PAPER_MARGIN / 5) * i + p.xo;
int const h = p.yo + p.row->height() - 1 - (i - next_depth - 1) * 3;
p.pain->line(x, p.yo, x, h, LColor::depthbar);
int const w = LYX_PAPER_MARGIN / 5;
if (i > prev_depth) {
p.pain->fillRectangle(x, p.yo, w, 2, LColor::depthbar);
}
if (i > next_depth) {
p.pain->fillRectangle(x, h, w, 2, LColor::depthbar);
}
}
}
int LyXText::getLengthMarkerHeight(BufferView * bv, VSpace const & vsp) const
{
int const arrow_size = 4;
int const space_size = int(vsp.inPixels(bv));
if (vsp.kind() != VSpace::LENGTH) {
return space_size;
}
LyXFont font;
font.decSize();
int const min_size = max(3 * arrow_size,
font_metrics::maxAscent(font)
+ font_metrics::maxDescent(font));
if (vsp.length().len().value() < 0.0)
return min_size;
else
return max(min_size, space_size);
}
int LyXText::drawLengthMarker(DrawRowParams & p, string const & prefix,
VSpace const & vsp, int start)
{
int const arrow_size = 4;
int const size = getLengthMarkerHeight(p.bv, vsp);
int const end = start + size;
// the label to display (if any)
string str;
// y-values for top arrow
int ty1, ty2;
// y-values for bottom arrow
int by1, by2;
switch (vsp.kind()) {
case VSpace::LENGTH:
{
str = prefix + " (" + vsp.asLyXCommand() + ")";
// adding or removing space
bool const added = !(vsp.length().len().value() < 0.0);
ty1 = added ? (start + arrow_size) : start;
ty2 = added ? start : (start + arrow_size);
by1 = added ? (end - arrow_size) : end;
by2 = added ? end : (end - arrow_size);
break;
}
case VSpace::VFILL:
str = prefix + _(" (vertical fill)");
ty1 = ty2 = start;
by1 = by2 = end;
break;
default:
// nothing to draw here
return size;
}
int const leftx = p.xo + leftMargin(p.bv, p.row);
int const midx = leftx + arrow_size;
int const rightx = midx + arrow_size;
// first the string
int w = 0;
int a = 0;
int d = 0;
LyXFont font;
font.setColor(LColor::added_space).decSize();
font_metrics::rectText(str, font, w, a, d);
p.pain->rectText(leftx + 2 * arrow_size + 5,
start + ((end - start) / 2) + d,
str, font);
// top arrow
p.pain->line(leftx, ty1, midx, ty2, LColor::added_space);
p.pain->line(midx, ty2, rightx, ty1, LColor::added_space);
// bottom arrow
p.pain->line(leftx, by1, midx, by2, LColor::added_space);
p.pain->line(midx, by2, rightx, by1, LColor::added_space);
// joining line
p.pain->line(midx, ty2, midx, by2, LColor::added_space);
return size;
}
int LyXText::paintPageBreak(string const & label, int y, DrawRowParams & p)
{
LyXFont pb_font;
pb_font.setColor(LColor::pagebreak).decSize();
int w = 0;
int a = 0;
int d = 0;
font_metrics::rectText(label, pb_font, w, a, d);
int const text_start = p.xo + ((p.width - w) / 2);
int const text_end = text_start + w;
p.pain->rectText(text_start, y + d, label, pb_font);
p.pain->line(p.xo, y, text_start, y,
LColor::pagebreak, Painter::line_onoffdash);
p.pain->line(text_end, y, p.xo + p.width, y,
LColor::pagebreak, Painter::line_onoffdash);
return 3 * defaultHeight();
}
void LyXText::paintFirstRow(DrawRowParams & p)
{
Paragraph * par = p.row->par();
ParagraphParameters const & parparams = par->params();
// start of appendix?
if (parparams.startOfAppendix()) {
p.pain->line(1, p.yo, p.width - 2, p.yo, LColor::appendixline);
}
int y_top = 0;
// think about the margins
if (!p.row->previous() && bv_owner)
y_top += LYX_PAPER_MARGIN;
// draw a top pagebreak
if (parparams.pagebreakTop()) {
y_top += paintPageBreak(_("Page Break (top)"),
p.yo + y_top + 2 * defaultHeight(), p);
}
// draw the additional space if needed:
y_top += drawLengthMarker(p, _("Space above"),
parparams.spaceTop(), p.yo + y_top);
Buffer const * buffer = p.bv->buffer();
LyXLayout_ptr const & layout = par->layout();
// think about the parskip
// some parskips VERY EASY IMPLEMENTATION
if (buffer->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
if (par->previous()) {
if (layout->latextype == LATEX_PARAGRAPH
&& !par->getDepth()) {
y_top += buffer->params.getDefSkip().inPixels(p.bv);
} else {
LyXLayout_ptr const & playout =
par->previous()->layout();
if (playout->latextype == LATEX_PARAGRAPH
&& !par->previous()->getDepth()) {
// is it right to use defskip here, too? (AS)
y_top += buffer->params.getDefSkip().inPixels(p.bv);
}
}
}
}
int const ww = p.bv->workWidth();
// draw a top line
if (parparams.lineTop()) {
LyXFont font(LyXFont::ALL_SANE);
int const asc = font_metrics::ascent('x', getFont(buffer, par, 0));
y_top += asc;
int const w = (inset_owner ? inset_owner->width(p.bv, font) : ww);
int const xp = static_cast<int>(inset_owner ? p.xo : 0);
p.pain->line(xp, p.yo + y_top, xp + w, p.yo + y_top,
LColor::topline, Painter::line_solid,
Painter::line_thick);
y_top += asc;
}
bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
// should we print a label?
if (layout->labeltype >= LABEL_STATIC
&& (layout->labeltype != LABEL_STATIC
|| layout->latextype != LATEX_ENVIRONMENT
|| par->isFirstInSequence())) {
LyXFont font = getLabelFont(buffer, par);
if (!par->getLabelstring().empty()) {
float x = p.x;
string const str = par->getLabelstring();
// this is special code for the chapter layout. This is
// printed in an extra row and has a pagebreak at
// the top.
if (layout->labeltype == LABEL_COUNTER_CHAPTER) {
if (buffer->params.secnumdepth >= 0) {
float spacing_val = 1.0;
if (!parparams.spacing().isDefault()) {
spacing_val = parparams.spacing().getValue();
} else {
spacing_val = buffer->params.spacing.getValue();
}
int const maxdesc =
int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
+ int(layout->parsep) * defaultHeight();
if (is_rtl) {
x = ww - leftMargin(p.bv, p.row) -
font_metrics::width(str, font);
}
p.pain->text(int(x),
p.yo + p.row->baseline() -
p.row->ascent_of_text() - maxdesc,
str, font);
}
} else {
if (is_rtl) {
x = ww - leftMargin(p.bv, p.row)
+ font_metrics::width(layout->labelsep, font);
} else {
x = p.x - font_metrics::width(layout->labelsep, font)
- font_metrics::width(str, font);
}
p.pain->text(int(x), p.yo + p.row->baseline(), str, font);
}
}
// the labels at the top of an environment.
// More or less for bibliography
} else if (par->isFirstInSequence() &&
(layout->labeltype == LABEL_TOP_ENVIRONMENT ||
layout->labeltype == LABEL_BIBLIO ||
layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
LyXFont font = getLabelFont(buffer, par);
if (!par->getLabelstring().empty()) {
string const str = par->getLabelstring();
float spacing_val = 1.0;
if (!parparams.spacing().isDefault()) {
spacing_val = parparams.spacing().getValue();
} else {
spacing_val = buffer->params.spacing.getValue();
}
int maxdesc =
int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
+ (layout->labelbottomsep * defaultHeight()));
float x = p.x;
if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
x = ((is_rtl ? leftMargin(p.bv, p.row) : p.x)
+ ww - rightMargin(buffer, p.row)) / 2;
x -= font_metrics::width(str, font) / 2;
} else if (is_rtl) {
x = ww - leftMargin(p.bv, p.row) -
font_metrics::width(str, font);
}
p.pain->text(int(x), p.yo + p.row->baseline()
- p.row->ascent_of_text() - maxdesc,
str, font);
}
}
if (layout->labeltype == LABEL_BIBLIO && par->bibkey) {
LyXFont font = getLayoutFont(buffer, par);
float x;
if (is_rtl) {
x = ww - leftMargin(p.bv, p.row)
+ font_metrics::width(layout->labelsep, font);
} else {
x = p.x - font_metrics::width(layout->labelsep, font)
- par->bibkey->width(p.bv, font);
}
par->bibkey->draw(p.bv, font, p.yo + p.row->baseline(), x, p.cleared);
}
}
void LyXText::paintLastRow(DrawRowParams & p)
{
Paragraph * par = p.row->par();
ParagraphParameters const & parparams = par->params();
int y_bottom = p.row->height() - 1;
// think about the margins
if (!p.row->next() && bv_owner)
y_bottom -= LYX_PAPER_MARGIN;
int const ww = p.bv->workWidth();
// draw a bottom pagebreak
if (parparams.pagebreakBottom()) {
y_bottom -= paintPageBreak(_("Page Break (bottom)"),
p.yo + y_bottom - 2 * defaultHeight(), p);
}
// draw the additional space if needed:
int const height = getLengthMarkerHeight(p.bv,
parparams.spaceBottom());
y_bottom -= drawLengthMarker(p, _("Space below"),
parparams.spaceBottom(),
p.yo + y_bottom - height);
Buffer const * buffer = p.bv->buffer();
// draw a bottom line
if (parparams.lineBottom()) {
LyXFont font(LyXFont::ALL_SANE);
int const asc = font_metrics::ascent('x',
getFont(buffer, par,
max(pos_type(0), par->size() - 1)));
y_bottom -= asc;
int const w = (inset_owner ? inset_owner->width(p.bv, font) : ww);
int const xp = static_cast<int>(inset_owner ? p.xo : 0);
int const y = p.yo + y_bottom;
p.pain->line(xp, y, xp + w, y, LColor::topline, Painter::line_solid,
Painter::line_thick);
y_bottom -= asc;
}
bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
int const endlabel = par->getEndLabel();
// draw an endlabel
switch (endlabel) {
case END_LABEL_BOX:
case END_LABEL_FILLED_BOX:
{
LyXFont const font = getLabelFont(buffer, par);
int const size = int(0.75 * font_metrics::maxAscent(font));
int const y = (p.yo + p.row->baseline()) - size;
int x = is_rtl ? LYX_PAPER_MARGIN : ww - LYX_PAPER_MARGIN - size;
if (p.row->fill() <= size)
x += (size - p.row->fill() + 1) * (is_rtl ? -1 : 1);
if (endlabel == END_LABEL_BOX) {
p.pain->rectangle(x, y, size, size, LColor::eolmarker);
} else {
p.pain->fillRectangle(x, y, size, size,
LColor::eolmarker);
}
break;
}
case END_LABEL_STATIC:
{
#if 0
LyXFont font(LyXFont::ALL_SANE);
font = getLabelFont(buffer, par);
#else
LyXFont font = getLabelFont(buffer, par);
#endif
string const & str = par->layout()->endlabelstring();
int const x = is_rtl ?
int(p.x) - font_metrics::width(str, font)
: ww - rightMargin(buffer, p.row) - p.row->fill();
p.pain->text(x, p.yo + p.row->baseline(), str, font);
break;
}
case END_LABEL_NO_LABEL:
break;
}
}
void LyXText::paintRowText(DrawRowParams & p)
{
Paragraph * par = p.row->par();
Buffer const * buffer = p.bv->buffer();
pos_type const last = rowLastPrintable(p.row);
pos_type main_body =
beginningOfMainBody(buffer, par);
if (main_body > 0 &&
(main_body - 1 > last ||
!par->isLineSeparator(main_body - 1))) {
main_body = 0;
}
LyXLayout_ptr const & layout = par->layout();
pos_type vpos = p.row->pos();
while (vpos <= last) {
if (p.x > p.bv->workWidth())
break;
pos_type pos = vis2log(vpos);
if (p.x + singleWidth(p.bv, par, pos) < 0) {
p.x += singleWidth(p.bv, par, pos);
++vpos;
continue;
}
if (main_body > 0 && pos == main_body - 1) {
int const lwidth = font_metrics::width(layout->labelsep,
getLabelFont(buffer, par));
p.x += p.label_hfill + lwidth
- singleWidth(p.bv, par, main_body - 1);
}
if (par->isHfill(pos)) {
p.x += 1;
int const y0 = p.yo + p.row->baseline();
int const y1 = y0 - defaultHeight() / 2;
p.pain->line(int(p.x), y1, int(p.x), y0,
LColor::added_space);
if (hfillExpansion(buffer, p.row, pos)) {
int const y2 = (y0 + y1) / 2;
if (pos >= main_body) {
p.pain->line(int(p.x), y2,
int(p.x + p.hfill), y2,
LColor::added_space,
Painter::line_onoffdash);
p.x += p.hfill;
} else {
p.pain->line(int(p.x), y2,
int(p.x + p.label_hfill), y2,
LColor::added_space,
Painter::line_onoffdash);
p.x += p.label_hfill;
}
p.pain->line(int(p.x), y1,
int(p.x), y0,
LColor::added_space);
}
p.x += 2;
++vpos;
} else if (par->isSeparator(pos)) {
p.x += singleWidth(p.bv, par, pos);
if (pos >= main_body)
p.x += p.separator;
++vpos;
} else {
if (!draw(p, vpos))
break;
}
}
}
void LyXText::getVisibleRow(BufferView * bv, int y_offset, int x_offset,
Row * row, int y, bool cleared)
{
if (row->height() <= 0) {
lyxerr << "LYX_ERROR: row.height: "
<< row->height() << endl;
return;
}
DrawRowParams p;
// set up drawing parameters
p.bv = bv;
p.pain = &bv->painter();
p.row = row;
p.xo = x_offset;
p.yo = y_offset;
prepareToPrint(bv, row, p.x, p.separator, p.hfill, p.label_hfill);
if (inset_owner && (p.x < 0))
p.x = 0;
p.x += p.xo;
p.y = y;
p.width = inset_owner ? inset_owner->textWidth(bv, true) : bv->workWidth();
p.cleared = cleared;
// start painting
// clear to background if necessary
p.cleared = paintRowBackground(p);
// paint the selection background
if (selection.set()) {
paintRowSelection(p);
}
// vertical lines for appendix
paintRowAppendix(p);
// environment depth brackets
paintRowDepthBar(p);
// draw any stuff wanted for a first row of a paragraph
if (!row->pos()) {
paintFirstRow(p);
}
// draw any stuff wanted for the last row of a paragraph
if (!row->next() || (row->next()->par() != row->par())) {
paintLastRow(p);
}
// paint text
paintRowText(p);
}
int LyXText::defaultHeight() const
{
LyXFont font(LyXFont::ALL_SANE);
return int(font_metrics::maxAscent(font)
+ font_metrics::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
pos_type
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);
pos_type vc = row->pos();
pos_type last = rowLastPrintable(row);
pos_type c = 0;
LyXLayout_ptr const & layout = row->par()->layout();
bool left_side = false;
pos_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 +
font_metrics::width(layout->labelsep,
getLabelFont(bview->buffer(), row->par()));
if (row->par()->isLineSeparator(main_body - 1))
tmpx -= singleWidth(bview, row->par(), main_body-1);
}
if (hfillExpansion(bview->buffer(), row, c)) {
tmpx += 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, pos_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;
}
Row * LyXText::getRowNearY(int & y) const
{
#if 1
// If possible we should optimize this method. (Lgb)
Row * tmprow = firstrow;
int tmpy = 0;
while (tmprow->next() && tmpy + tmprow->height() <= y) {
tmpy += tmprow->height();
tmprow = tmprow->next();
}
y = tmpy; // return the real y
//lyxerr << "returned y = " << y << endl;
return tmprow;
#else
// Search from the current cursor position.
Row * tmprow = cursor.row();
int tmpy = cursor.y() - tmprow->baseline();
lyxerr << "cursor.y() = " << tmpy << endl;
lyxerr << "tmprow->height() = " << tmprow->height() << endl;
lyxerr << "tmprow->baseline() = " << tmprow->baseline() << endl;
lyxerr << "first = " << first << endl;
lyxerr << "y = " << y << endl;
if (y < tmpy) {
lyxerr << "up" << endl;
do {
tmpy -= tmprow->height();
tmprow = tmprow->previous();
} while (tmprow && tmpy - tmprow->height() >= y);
} else if (y > tmpy) {
lyxerr << "down" << endl;
while (tmprow->next() && tmpy + tmprow->height() <= y) {
tmpy += tmprow->height();
tmprow = tmprow->next();
}
} else {
lyxerr << "equal" << endl;
}
y = tmpy; // return the real y
lyxerr << "returned y = " << y << endl;
return tmprow;
#endif
}
int LyXText::getDepth() const
{
return cursor.par()->getDepth();
}