1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
//
// "$Id$"
//
#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; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// 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_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 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 "$Id$".
//
|
