lyx_mirror/src/mathed/math_gridinset.C

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#ifdef __GNUG__
#pragma implementation
#endif
#include "math_gridinset.h"
#include "math_mathmlstream.h"
#include "math_streamstr.h"
#include "lyxfont.h"
#include "Painter.h"
#include "debug.h"
namespace {
///
int const COLSEP = 6;
///
int const ROWSEP = 6;
///
int const HLINESEP = 3;
///
int const VLINESEP = 3;
///
int const BORDER = 2;
string verboseHLine(int n)
{
string res;
for (int i = 0; i < n; ++i)
res += "\\hline";
return res + ' ';
}
}
//////////////////////////////////////////////////////////////
MathGridInset::RowInfo::RowInfo()
: lines_(0), skip_(0)
{}
int MathGridInset::RowInfo::skipPixels() const
{
#ifdef WITH_WARNINGS
#warning fix this once the interface to LyXLength has improved
#endif
return int(crskip_.value());
}
//////////////////////////////////////////////////////////////
MathGridInset::ColInfo::ColInfo()
: align_('c'), leftline_(false), rightline_(false), lines_(0)
{}
//////////////////////////////////////////////////////////////
MathGridInset::MathGridInset(char v, string const & h)
: MathNestInset(guessColumns(h)), rowinfo_(2), colinfo_(guessColumns(h) + 1)
{
setDefaults();
valign(v);
halign(h);
}
MathGridInset::MathGridInset(col_type m, row_type n)
: MathNestInset(m * n), rowinfo_(n + 1), colinfo_(m + 1), v_align_('c')
{
setDefaults();
}
MathGridInset::MathGridInset(col_type m, row_type n, char v, string const & h)
: MathNestInset(m * n), rowinfo_(n + 1), colinfo_(m + 1), v_align_(v)
{
setDefaults();
valign(v);
halign(h);
}
MathInset * MathGridInset::clone() const
{
return new MathGridInset(*this);
}
MathInset::idx_type MathGridInset::index(row_type row, col_type col) const
{
return col + ncols() * row;
}
void MathGridInset::setDefaults()
{
if (ncols() <= 0)
lyxerr << "positive number of columns expected\n";
if (nrows() <= 0)
lyxerr << "positive number of rows expected\n";
for (col_type col = 0; col < ncols(); ++col) {
colinfo_[col].align_ = defaultColAlign(col);
colinfo_[col].skip_ = defaultColSpace(col);
}
}
void MathGridInset::halign(string const & hh)
{
col_type col = 0;
for (string::const_iterator it = hh.begin(); it != hh.end(); ++it) {
char c = *it;
if (c == '|') {
colinfo_[col].lines_++;
} else if (c == 'c' || c == 'l' || c == 'r') {
colinfo_[col].align_ = c;
++col;
colinfo_[col].lines_ = 0;
} else {
lyxerr << "unkown column separator: '" << c << "'\n";
}
}
/*
col_type n = hh.size();
if (n > ncols())
n = ncols();
for (col_type col = 0; col < n; ++col)
colinfo_[col].align_ = hh[col];
*/
}
MathGridInset::col_type MathGridInset::guessColumns(string const & hh) const
{
col_type col = 0;
for (string::const_iterator it = hh.begin(); it != hh.end(); ++it)
if (*it == 'c' || *it == 'l' || *it == 'r')
++col;
return col;
}
void MathGridInset::halign(char h, col_type col)
{
colinfo_[col].align_ = h;
}
char MathGridInset::halign(col_type col) const
{
return colinfo_[col].align_;
}
string MathGridInset::halign() const
{
string res;
for (col_type col = 0; col < ncols(); ++col) {
res += string(colinfo_[col].lines_, '|');
res += colinfo_[col].align_;
}
return res + string(colinfo_[ncols()].lines_, '|');
}
void MathGridInset::valign(char c)
{
v_align_ = c;
}
char MathGridInset::valign() const
{
return v_align_;
}
MathGridInset::col_type MathGridInset::ncols() const
{
return colinfo_.size() - 1;
}
MathGridInset::row_type MathGridInset::nrows() const
{
return rowinfo_.size() - 1;
}
MathGridInset::col_type MathGridInset::col(idx_type idx) const
{
return idx % ncols();
}
MathGridInset::row_type MathGridInset::row(idx_type idx) const
{
return idx / ncols();
}
void MathGridInset::vcrskip(LyXLength const & crskip, row_type row)
{
rowinfo_[row].crskip_ = crskip;
}
LyXLength MathGridInset::vcrskip(row_type row) const
{
return rowinfo_[row].crskip_;
}
void MathGridInset::metrics(MathMetricsInfo const & mi) const
{
// let the cells adjust themselves
MathNestInset::metrics(mi);
// compute absolute sizes of vertical structure
for (row_type row = 0; row < nrows(); ++row) {
int asc = 0;
int desc = 0;
for (col_type col = 0; col < ncols(); ++col) {
MathXArray const & c = xcell(index(row, col));
asc = std::max(asc, c.ascent());
desc = std::max(desc, c.descent());
}
rowinfo_[row].ascent_ = asc;
rowinfo_[row].descent_ = desc;
}
rowinfo_[0].ascent_ += HLINESEP * rowinfo_[0].lines_;
rowinfo_[nrows()].ascent_ = 0;
rowinfo_[nrows()].descent_ = 0;
// compute vertical offsets
rowinfo_[0].offset_ = 0;
for (row_type row = 1; row <= nrows(); ++row) {
rowinfo_[row].offset_ =
rowinfo_[row - 1].offset_ +
rowinfo_[row - 1].descent_ +
rowinfo_[row - 1].skipPixels() +
ROWSEP +
rowinfo_[row].lines_ * HLINESEP +
rowinfo_[row].ascent_;
}
// adjust vertical offset
int h = 0;
switch (v_align_) {
case 't':
h = 0;
break;
case 'b':
h = rowinfo_[nrows() - 1].offset_;
break;
default:
h = rowinfo_[nrows() - 1].offset_ / 2;
}
for (row_type row = 0; row <= nrows(); ++row)
rowinfo_[row].offset_ -= h;
// compute absolute sizes of horizontal structure
for (col_type col = 0; col < ncols(); ++col) {
int wid = 0;
for (row_type row = 0; row < nrows(); ++row)
wid = std::max(wid, xcell(index(row, col)).width());
colinfo_[col].width_ = wid;
}
colinfo_[ncols()].width_ = 0;
// compute horizontal offsets
colinfo_[0].offset_ = BORDER;
for (col_type col = 1; col <= ncols(); ++col) {
colinfo_[col].offset_ =
colinfo_[col - 1].offset_ +
colinfo_[col - 1].width_ +
colinfo_[col - 1].skip_ +
COLSEP +
colinfo_[col].lines_ * VLINESEP;
}
width_ = colinfo_[ncols() - 1].offset_
+ colinfo_[ncols() - 1].width_
+ VLINESEP * colinfo_[ncols()].lines_
+ BORDER;
ascent_ = - rowinfo_[0].offset_
+ rowinfo_[0].ascent_
+ HLINESEP * rowinfo_[0].lines_
+ BORDER;
descent_ = rowinfo_[nrows() - 1].offset_
+ rowinfo_[nrows() - 1].descent_
+ HLINESEP * rowinfo_[nrows()].lines_
+ BORDER;
/*
// Increase ws_[i] for 'R' columns (except the first one)
for (int i = 1; i < nc_; ++i)
if (align_[i] == 'R')
ws_[i] += 10 * df_width;
// Increase ws_[i] for 'C' column
if (align_[0] == 'C')
if (ws_[0] < 7 * workwidth / 8)
ws_[0] = 7 * workwidth / 8;
// Adjust local tabs
width = COLSEP;
for (cxrow = row_.begin(); cxrow; ++cxrow) {
int rg = COLSEP;
int lf = 0;
for (int i = 0; i < nc_; ++i) {
bool isvoid = false;
if (cxrow->getTab(i) <= 0) {
cxrow->setTab(i, df_width);
isvoid = true;
}
switch (align_[i]) {
case 'l':
lf = 0;
break;
case 'c':
lf = (ws_[i] - cxrow->getTab(i))/2;
break;
case 'r':
case 'R':
lf = ws_[i] - cxrow->getTab(i);
break;
case 'C':
if (cxrow == row_.begin())
lf = 0;
else if (cxrow.is_last())
lf = ws_[i] - cxrow->getTab(i);
else
lf = (ws_[i] - cxrow->getTab(i))/2;
break;
}
int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
cxrow->setTab(i, lf + rg);
rg = ws_[i] - ww + COLSEP;
if (cxrow == row_.begin())
width += ws_[i] + COLSEP;
}
cxrow->setBaseline(cxrow->getBaseline() - ascent);
}
*/
}
void MathGridInset::draw(Painter & pain, int x, int y) const
{
for (idx_type idx = 0; idx < nargs(); ++idx)
xcell(idx).draw(pain, x + cellXOffset(idx), y + cellYOffset(idx));
for (row_type row = 0; row <= nrows(); ++row)
for (int i = 0; i < rowinfo_[row].lines_; ++i) {
int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
- i * HLINESEP - HLINESEP/2 - ROWSEP/2;
pain.line(x + 1, yy, x + width_ - 1, yy);
}
for (col_type col = 0; col <= ncols(); ++col)
for (int i = 0; i < colinfo_[col].lines_; ++i) {
int xx = x + colinfo_[col].offset_
- i * VLINESEP - VLINESEP/2 - COLSEP/2;
pain.line(xx, y - ascent_ + 1, xx, y + descent_ - 1);
}
}
string MathGridInset::eolString(row_type row) const
{
string eol;
if (!rowinfo_[row].crskip_.zero())
eol += "[" + rowinfo_[row].crskip_.asLatexString() + "]";
// make sure an upcoming '[' does not break anything
if (row + 1 < nrows()) {
MathArray const & c = cell(index(row + 1, 0));
if (c.size() && c.front()->getChar() == '[')
eol += "[0pt]";
}
// only add \\ if necessary
if (eol.empty() && row + 1 == nrows())
return string();
return "\\\\" + eol + '\n';
}
string MathGridInset::eocString(col_type col) const
{
if (col + 1 == ncols())
return string();
return " & ";
}
void MathGridInset::addRow(row_type row)
{
rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
cells_.insert(cells_.begin() + (row + 1) * ncols(), ncols(), MathXArray());
}
void MathGridInset::appendRow()
{
rowinfo_.push_back(RowInfo());
//cells_.insert(cells_.end(), ncols(), MathXArray());
for (col_type col = 0; col < ncols(); ++col)
cells_.push_back(cells_type::value_type());
}
void MathGridInset::delRow(row_type row)
{
if (nrows() == 1)
return;
cells_type::iterator it = cells_.begin() + row * ncols();
cells_.erase(it, it + ncols());
rowinfo_.erase(rowinfo_.begin() + row);
}
void MathGridInset::addCol(col_type newcol)
{
const col_type nc = ncols();
const row_type nr = nrows();
cells_type new_cells((nc + 1) * nr);
for (row_type row = 0; row < nr; ++row)
for (col_type col = 0; col < nc; ++col)
new_cells[row * (nc + 1) + col + (col > newcol)]
= cells_[row * nc + col];
std::swap(cells_, new_cells);
ColInfo inf;
inf.skip_ = defaultColSpace(newcol);
inf.align_ = defaultColAlign(newcol);
colinfo_.insert(colinfo_.begin() + newcol, inf);
}
void MathGridInset::delCol(col_type col)
{
if (ncols() == 1)
return;
cells_type tmpcells;
for (col_type i = 0; i < nargs(); ++i)
if (i % ncols() != col)
tmpcells.push_back(cells_[i]);
std::swap(cells_, tmpcells);
colinfo_.erase(colinfo_.begin() + col);
}
int MathGridInset::cellXOffset(idx_type idx) const
{
col_type c = col(idx);
int x = colinfo_[c].offset_;
char align = colinfo_[c].align_;
if (align == 'r' || align == 'R')
x += colinfo_[c].width_ - xcell(idx).width();
if (align == 'c' || align == 'C')
x += (colinfo_[c].width_ - xcell(idx).width()) / 2;
return x;
}
int MathGridInset::cellYOffset(idx_type idx) const
{
return rowinfo_[row(idx)].offset_;
}
bool MathGridInset::idxUp(idx_type & idx) const
{
if (idx < ncols())
return false;
idx -= ncols();
return true;
}
bool MathGridInset::idxDown(idx_type & idx) const
{
if (idx >= ncols() * (nrows() - 1))
return false;
idx += ncols();
return true;
}
bool MathGridInset::idxLeft(idx_type & idx, pos_type & pos) const
{
// leave matrix if on the left hand edge
if (col(idx) == 0)
return false;
--idx;
pos = cell(idx).size();
return true;
}
bool MathGridInset::idxRight(idx_type & idx, pos_type & pos) const
{
// leave matrix if on the right hand edge
if (col(idx) + 1 == ncols())
return false;
++idx;
pos = 0;
return true;
}
bool MathGridInset::idxFirst(idx_type & idx, pos_type & pos) const
{
switch (v_align_) {
case 't':
idx = 0;
break;
case 'b':
idx = (nrows() - 1) * ncols();
break;
default:
idx = ((nrows() - 1) / 2) * ncols();
}
pos = 0;
return true;
}
bool MathGridInset::idxLast(idx_type & idx, pos_type & pos) const
{
switch (v_align_) {
case 't':
idx = ncols() - 1;
break;
case 'b':
idx = nargs() - 1;
break;
default:
idx = ((nrows() - 1) / 2 + 1) * ncols() - 1;
}
pos = cell(idx).size();
return true;
}
bool MathGridInset::idxHome(idx_type & idx, pos_type & pos) const
{
if (pos > 0) {
pos = 0;
return true;
}
if (col(idx) > 0) {
idx -= idx % ncols();
pos = 0;
return true;
}
if (idx > 0) {
idx = 0;
pos = 0;
return true;
}
return false;
}
bool MathGridInset::idxEnd(idx_type & idx, pos_type & pos) const
{
if (pos < cell(idx).size()) {
pos = cell(idx).size();
return true;
}
if (col(idx) < ncols() - 1) {
idx = idx - idx % ncols() + ncols() - 1;
pos = cell(idx).size();
return true;
}
if (idx < nargs() - 1) {
idx = nargs() - 1;
pos = cell(idx).size();
return true;
}
return false;
}
void MathGridInset::idxDelete(idx_type & idx, bool & popit, bool & deleteit)
{
popit = false;
deleteit = false;
// nothing to do if we are in the last row of the inset
if (row(idx) + 1 == nrows())
return;
// try to delete entire sequence of ncols() empty cells if possible
for (idx_type i = idx; i < idx + ncols(); ++i)
if (cell(i).size())
return;
// move cells if necessary
for (idx_type i = index(row(idx), 0); i < idx; ++i)
cell(i).swap(cell(i + ncols()));
delRow(row(idx));
if (idx >= nargs())
idx = nargs() - 1;
// undo effect of Ctrl-Tab (i.e. pull next cell)
//if (idx + 1 != nargs())
// cell(idx).swap(cell(idx + 1));
}
void MathGridInset::idxDeleteRange(idx_type /*from*/, idx_type /*to*/)
{
// leave this unimplemented unless someone wants to have it.
/*
int n = (to - from) / ncols();
int r = from / ncols();
if (n >= 1) {
cells_type::iterator it = cells_.begin() + from;
cells_.erase(it, it + n * ncols());
rowinfo_.erase(rowinfo_.begin() + r, rowinfo_.begin() + r + n);
}
*/
}
MathGridInset::RowInfo const & MathGridInset::rowinfo(row_type row) const
{
return rowinfo_[row];
}
MathGridInset::RowInfo & MathGridInset::rowinfo(row_type row)
{
return rowinfo_[row];
}
std::vector<MathInset::idx_type>
MathGridInset::idxBetween(idx_type from, idx_type to) const
{
row_type r1 = std::min(row(from), row(to));
row_type r2 = std::max(row(from), row(to));
col_type c1 = std::min(col(from), col(to));
col_type c2 = std::max(col(from), col(to));
std::vector<idx_type> res;
for (row_type i = r1; i <= r2; ++i)
for (col_type j = c1; j <= c2; ++j)
res.push_back(index(i, j));
return res;
}
void MathGridInset::normalize(NormalStream & os) const
{
os << "[grid ";
for (row_type row = 0; row < nrows(); ++row) {
os << "[row ";
for (col_type col = 0; col < ncols(); ++col)
os << "[cell " << cell(index(row, col)) << ']';
os << ']';
}
os << ']';
}
void MathGridInset::mathmlize(MathMLStream & os) const
{
os << MTag("mtable");
for (row_type row = 0; row < nrows(); ++row) {
os << MTag("mtr");
for (col_type col = 0; col < ncols(); ++col)
os << cell(index(row, col));
os << ETag("mtr");
}
os << ETag("mtable");
}
void MathGridInset::write(WriteStream & os) const
{
for (row_type row = 0; row < nrows(); ++row) {
os << verboseHLine(rowinfo_[row].lines_);
for (col_type col = 0; col < ncols(); ++col)
os << cell(index(row, col)) << eocString(col);
os << eolString(row);
}
string const s = verboseHLine(rowinfo_[nrows()].lines_);
if (!s.empty())
os << "\\\\" << s;
}