1 /* String input
2
3 * Copyright (C) 1998 J.A. Bezemer
4 *
5 * Licensed under the terms of the GNU General Public License.
6 * ABSOLUTELY NO WARRANTY.
7 * See the file `COPYING' in this directory.
8 */
9
10 #include "stringinput.h"
11 #include <string.h>
12 #ifndef OLD_CURSES
13 #include <ncurses.h>
14 #else
15 #include <curses.h>
16 #endif
17
18
19 void
stringinput_display(stringinput_t * data)20 stringinput_display (stringinput_t * data)
21 {
22 int i;
23
24 if (data->cursorpos < 0)
25 data->cursorpos = 0;
26 if (data->cursorpos > strlen (data->string))
27 data->cursorpos = strlen (data->string);
28
29 if (data->cursorpos < data->firstcharonscreen + 2)
30 data->firstcharonscreen = data->cursorpos - 2;
31 if (data->cursorpos >= data->firstcharonscreen + data->w)
32 data->firstcharonscreen = data->cursorpos - data->w + 1;
33
34 if (data->firstcharonscreen < 0)
35 data->firstcharonscreen = 0;
36
37 move (data->y, data->x);
38 i = data->firstcharonscreen;
39 while (i < strlen (data->string) && i < data->firstcharonscreen + data->w)
40 {
41 addch (data->string[i]);
42 i++;
43 }
44
45 while (i < data->firstcharonscreen + data->w)
46 {
47 addch (' ');
48 i++;
49 }
50
51 move (data->y, data->x + data->cursorpos - data->firstcharonscreen);
52 }
53
54 void
stringinput_stdkeys(int key,stringinput_t * data)55 stringinput_stdkeys (int key, stringinput_t * data)
56 {
57 char helpstring[500];
58
59 switch (key)
60 {
61 case KEY_LEFT:
62 data->cursorpos--;
63 break;
64
65 case KEY_RIGHT:
66 data->cursorpos++;
67 break;
68
69 case KEY_HOME:
70 data->cursorpos = 0;
71 break;
72
73 case KEY_END:
74 data->cursorpos = strlen (data->string);
75 break;
76
77 case KEY_BACKSPACE:
78 #ifdef TREAT_DEL_AS_BACKSPACE
79 case 127:
80 #endif
81 if (data->cursorpos > 0)
82 {
83 strcpy (helpstring, data->string);
84 strcpy (helpstring + data->cursorpos - 1,
85 data->string + data->cursorpos);
86 strcpy (data->string, helpstring);
87 data->cursorpos--;
88 }
89 break;
90
91 #ifndef TREAT_DEL_AS_BACKSPACE
92 case 127: /* DEL */
93 if (data->cursorpos < strlen (data->string))
94 {
95 strcpy (helpstring, data->string);
96 strcpy (helpstring + data->cursorpos,
97 data->string + data->cursorpos + 1);
98 strcpy (data->string, helpstring);
99 }
100 break;
101 #endif
102 }
103
104 if (key >= 32 && key <= 126) /* insert */
105 {
106 strcpy (helpstring, data->string);
107 strcpy (helpstring + data->cursorpos + 1,
108 data->string + data->cursorpos);
109 helpstring[data->cursorpos] = (char) key;
110 strcpy (data->string, helpstring);
111 data->cursorpos++;
112 }
113
114 if (data->cursorpos < 0)
115 data->cursorpos = 0;
116 if (data->cursorpos > strlen (data->string))
117 data->cursorpos = strlen (data->string);
118 }
119