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
|
/* Public Domain Curses */
#include <curspriv.h>
RCSID("$Id: touch.c,v 1.29 2008/07/13 16:08:18 wmcbrine Exp $")
/*man-start**************************************************************
Name: touch
Synopsis:
int touchwin(WINDOW *win);
int touchline(WINDOW *win, int start, int count);
int untouchwin(WINDOW *win);
int wtouchln(WINDOW *win, int y, int n, int changed);
bool is_linetouched(WINDOW *win, int line);
bool is_wintouched(WINDOW *win);
Description:
touchwin() and touchline() throw away all information about
which parts of the window have been touched, pretending that the
entire window has been drawn on. This is sometimes necessary
when using overlapping windows, since a change to one window
will affect the other window, but the records of which lines
have been changed in the other window will not reflect the
change.
untouchwin() marks all lines in the window as unchanged since
the last call to wrefresh().
wtouchln() makes n lines in the window, starting at line y, look
as if they have (changed == 1) or have not (changed == 0) been
changed since the last call to wrefresh().
is_linetouched() returns TRUE if the specified line in the
specified window has been changed since the last call to
wrefresh().
is_wintouched() returns TRUE if the specified window
has been changed since the last call to wrefresh().
Return Value:
All functions return OK on success and ERR on error except
is_wintouched() and is_linetouched().
Portability X/Open BSD SYS V
touchwin Y Y Y
touchline Y - 3.0
untouchwin Y - 4.0
wtouchln Y Y Y
is_linetouched Y - 4.0
is_wintouched Y - 4.0
**man-end****************************************************************/
int touchwin(WINDOW *win)
{
int i;
PDC_LOG(("touchwin() - called: Win=%x\n", win));
if (!win)
return ERR;
for (i = 0; i < win->_maxy; i++)
{
win->_firstch[i] = 0;
win->_lastch[i] = win->_maxx - 1;
}
return OK;
}
int touchline(WINDOW *win, int start, int count)
{
int i;
PDC_LOG(("touchline() - called: win=%p start %d count %d\n",
win, start, count));
if (!win || start > win->_maxy || start + count > win->_maxy)
return ERR;
for (i = start; i < start + count; i++)
{
win->_firstch[i] = 0;
win->_lastch[i] = win->_maxx - 1;
}
return OK;
}
int untouchwin(WINDOW *win)
{
int i;
PDC_LOG(("untouchwin() - called: win=%p", win));
if (!win)
return ERR;
for (i = 0; i < win->_maxy; i++)
{
win->_firstch[i] = _NO_CHANGE;
win->_lastch[i] = _NO_CHANGE;
}
return OK;
}
int wtouchln(WINDOW *win, int y, int n, int changed)
{
int i;
PDC_LOG(("wtouchln() - called: win=%p y=%d n=%d changed=%d\n",
win, y, n, changed));
if (!win || y > win->_maxy || y + n > win->_maxy)
return ERR;
for (i = y; i < y + n; i++)
{
if (changed)
{
win->_firstch[i] = 0;
win->_lastch[i] = win->_maxx - 1;
}
else
{
win->_firstch[i] = _NO_CHANGE;
win->_lastch[i] = _NO_CHANGE;
}
}
return OK;
}
bool is_linetouched(WINDOW *win, int line)
{
PDC_LOG(("is_linetouched() - called: win=%p line=%d\n", win, line));
if (!win || line > win->_maxy || line < 0)
return FALSE;
return (win->_firstch[line] != _NO_CHANGE) ? TRUE : FALSE;
}
bool is_wintouched(WINDOW *win)
{
int i;
PDC_LOG(("is_wintouched() - called: win=%p\n", win));
if (win)
for (i = 0; i < win->_maxy; i++)
if (win->_firstch[i] != _NO_CHANGE)
return TRUE;
return FALSE;
}
|
