lyx_mirror/src/mathed/math_gridinset.h

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// -*- C++ -*-
#ifndef MATH_GRID_H
#define MATH_GRID_H
#include "math_nestinset.h"
#include "vspace.h"
#include "LString.h"
#ifdef __GNUG__
#pragma interface
#endif
/** Gridded math inset base class.
This is the base to all grid-like editable math objects
like array and eqnarray.
\author Andr<EFBFBD> P<EFBFBD>nitz 2001
*/
class MathGridInset : public MathNestInset {
/// additional per-row information
struct RowInfo {
///
RowInfo();
///
int skipPixels() const;
/// cached descent
mutable int descent_;
/// cached ascent
mutable int ascent_;
/// cached offset
mutable int offset_;
/// hline abow this row?
bool upperline_;
/// hline below this row?
bool lowerline_;
/// distance
LyXLength skip_;
};
// additional per-row information
struct ColInfo {
///
ColInfo();
///
char h_align_;
/// cache for drawing
int h_offset;
/// cached width
mutable int width_;
/// cached offset
mutable int offset_;
///
bool leftline_;
///
bool rightline_;
};
public:
///
MathGridInset(int m, int n);
///
void write(std::ostream &, bool fragile) const;
///
void metrics(MathStyles st) const;
///
void draw(Painter &, int x, int y) const;
///
void halign(string const &);
///
void halign(char c, int col);
///
char halign(int col) const;
///
void valign(char c);
///
char valign() const;
///
void vskip(LyXLength const &, int row);
///
LyXLength vskip(int row) const;
///
void resize(short int type, int cols);
///
const RowInfo & rowinfo(int row) const;
///
RowInfo & rowinfo(int row);
///
bool isGrid() const { return true; }
///
int ncols() const { return colinfo_.size(); }
///
int nrows() const { return rowinfo_.size(); }
///
int col(int idx) const { return idx % ncols(); }
///
int row(int idx) const { return idx / ncols(); }
///
int cellXOffset(int idx) const;
///
int cellYOffset(int idx) const;
///
bool idxUp(int &, int &) const;
///
bool idxDown(int &, int &) const;
///
bool idxLeft(int &, int &) const;
///
bool idxRight(int &, int &) const;
///
bool idxFirst(int &, int &) const;
///
bool idxLast(int &, int &) const;
///
void idxDelete(int &, bool &, bool &);
///
void idxDeleteRange(int, int);
///
void addRow(int);
///
void delRow(int);
///
void addCol(int);
///
void delCol(int);
///
virtual void appendRow();
///
int index(int row, int col) const;
///
std::vector<int> idxBetween(int from, int to) const;
protected:
/// returns proper 'end of line' code for LaTeX
string eolString(int row) const;
/// returns proper 'end of column' code for LaTeX
string eocString(int col) const;
/// row info
std::vector<RowInfo> rowinfo_;
/// column info
std::vector<ColInfo> colinfo_;
///
char v_align_; // add approp. type
};
#endif