ref: e447c9fb929e61a40203b0193ee8d4cab8d72f7e
dir: /DoConfig/fltk/FL/Fl_Table_Row.H/
//
// "$Id$"
//
#ifndef _FL_TABLE_ROW_H
#define _FL_TABLE_ROW_H
//
// Fl_Table_Row -- A row oriented table widget
//
// A class specializing in a table of rows.
// Handles row-specific selection behavior.
//
// Copyright 2002 by Greg Ercolano.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems to "erco at seriss dot com".
//
#include "Fl_Table.H"
/**
A table with row selection capabilities.
This class implements a simple table with the ability to select
rows. This widget is similar to an Fl_Browser with columns. Most
methods of importance will be found in the Fl_Table widget, such
as Fl_Table::rows() and Fl_Table::cols().
To be useful it must be subclassed and at minimum the draw_cell()
method must be overridden to provide the content of the cells. This widget
does \em not manage the cell's data content; it is up to the parent
class's draw_cell() method override to provide this.
Events on the cells and/or headings generate callbacks when they are
clicked by the user. You control when events are generated based on
the values you supply for Fl_Table::when().
*/
class FL_EXPORT Fl_Table_Row : public Fl_Table {
public:
enum TableRowSelectMode {
SELECT_NONE, // no selection allowed
SELECT_SINGLE, // single row selection
SELECT_MULTI // multiple row selection (default)
};
private:
// An STL-ish vector without templates
class FL_EXPORT CharVector {
char *arr;
int _size;
void init() {
arr = NULL;
_size = 0;
}
void copy(char *newarr, int newsize) {
size(newsize);
memcpy(arr, newarr, newsize * sizeof(char));
}
public:
CharVector() { // CTOR
init();
}
~CharVector() { // DTOR
if ( arr ) free(arr);
arr = NULL;
}
CharVector(CharVector&o) { // COPY CTOR
init();
copy(o.arr, o._size);
}
CharVector& operator=(CharVector&o) { // ASSIGN
init();
copy(o.arr, o._size);
return(*this);
}
char operator[](int x) const {
return(arr[x]);
}
char& operator[](int x) {
return(arr[x]);
}
int size() {
return(_size);
}
void size(int count) {
if ( count != _size ) {
arr = (char*)realloc(arr, count * sizeof(char));
_size = count;
}
}
char pop_back() {
char tmp = arr[_size-1];
_size--;
return(tmp);
}
void push_back(char val) {
int x = _size;
size(_size+1);
arr[x] = val;
}
char back() {
return(arr[_size-1]);
}
};
CharVector _rowselect; // selection flag for each row
// handle() state variables.
// Put here instead of local statics in handle(), so more
// than one instance can exist without crosstalk between.
//
int _dragging_select; // dragging out a selection?
int _last_row;
int _last_y; // last event's Y position
int _last_push_x; // last PUSH event's X position
int _last_push_y; // last PUSH event's Y position
TableRowSelectMode _selectmode;
protected:
int handle(int event);
int find_cell(TableContext context, // find cell's x/y/w/h given r/c
int R, int C, int &X, int &Y, int &W, int &H) {
return(Fl_Table::find_cell(context, R, C, X, Y, W, H));
}
public:
/**
The constructor for the Fl_Table_Row.
This creates an empty table with no rows or columns,
with headers and row/column resize behavior disabled.
*/
Fl_Table_Row(int X, int Y, int W, int H, const char *l=0) : Fl_Table(X,Y,W,H,l) {
_dragging_select = 0;
_last_row = -1;
_last_y = -1;
_last_push_x = -1;
_last_push_y = -1;
_selectmode = SELECT_MULTI;
}
/**
The destructor for the Fl_Table_Row.
Destroys the table and its associated widgets.
*/
~Fl_Table_Row() { }
void rows(int val); // set number of rows
int rows() { // get number of rows
return(Fl_Table::rows());
}
/**
Sets the table selection mode.
- \p Fl_Table_Row::SELECT_NONE - No selection allowed
- \p Fl_Table_Row::SELECT_SINGLE - Only single rows can be selected
- \p Fl_Table_Row::SELECT_MULTI - Multiple rows can be selected
*/
void type(TableRowSelectMode val); // set selection mode
TableRowSelectMode type() const { // get selection mode
return(_selectmode);
}
/**
Checks to see if 'row' is selected. Returns 1 if selected, 0 if not. You can
change the selection of a row by clicking on it, or by using
select_row(row, flag)
*/
int row_selected(int row); // is row selected? (0=no, 1=yes, -1=range err)
/**
Changes the selection state for 'row', depending on the value
of 'flag'. 0=deselected, 1=select, 2=toggle existing state.
*/
int select_row(int row, int flag=1); // select state for row: flag:0=off, 1=on, 2=toggle
// returns: 0=no change, 1=changed, -1=range err
/**
This convenience function changes the selection state
for \em all rows based on 'flag'. 0=deselect, 1=select, 2=toggle existing state.
*/
void select_all_rows(int flag=1); // all rows to a known state
void clear() {
rows(0); // implies clearing selection
cols(0);
Fl_Table::clear(); // clear the table
}
};
#endif /*_FL_TABLE_ROW_H*/
//
// End of "$Id$".
//