blob: 50ff7ad3fb129ee048e76b0ef6c1db0cb3a6d4fb (
plain)
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
|
/* PDCurses */
#include <curspriv.h>
/*man-start**************************************************************
clear
-----
### Synopsis
int clear(void);
int wclear(WINDOW *win);
int erase(void);
int werase(WINDOW *win);
int clrtobot(void);
int wclrtobot(WINDOW *win);
int clrtoeol(void);
int wclrtoeol(WINDOW *win);
### Description
erase() and werase() copy blanks (i.e. the background chtype) to
every cell of the window.
clear() and wclear() are similar to erase() and werase(), but they
also call clearok() to ensure that the the window is cleared on the
next wrefresh().
clrtobot() and wclrtobot() clear the window from the current cursor
position to the end of the window.
clrtoeol() and wclrtoeol() clear the window from the current cursor
position to the end of the current line.
### Return Value
All functions return OK on success and ERR on error.
### Portability
X/Open ncurses NetBSD
clear Y Y Y
wclear Y Y Y
erase Y Y Y
werase Y Y Y
clrtobot Y Y Y
wclrtobot Y Y Y
clrtoeol Y Y Y
wclrtoeol Y Y Y
**man-end****************************************************************/
int wclrtoeol(WINDOW *win)
{
int x, y, minx;
chtype blank, *ptr;
PDC_LOG(("wclrtoeol() - called: Row: %d Col: %d\n",
win->_cury, win->_curx));
if (!win)
return ERR;
y = win->_cury;
x = win->_curx;
/* wrs (4/10/93) account for window background */
blank = win->_bkgd;
for (minx = x, ptr = &win->_y[y][x]; minx < win->_maxx; minx++, ptr++)
*ptr = blank;
if (x < win->_firstch[y] || win->_firstch[y] == _NO_CHANGE)
win->_firstch[y] = x;
win->_lastch[y] = win->_maxx - 1;
PDC_sync(win);
return OK;
}
int clrtoeol(void)
{
PDC_LOG(("clrtoeol() - called\n"));
return wclrtoeol(stdscr);
}
int wclrtobot(WINDOW *win)
{
int savey, savex;
PDC_LOG(("wclrtobot() - called\n"));
if (!win)
return ERR;
savey = win->_cury;
savex = win->_curx;
/* should this involve scrolling region somehow ? */
if (win->_cury + 1 < win->_maxy)
{
win->_curx = 0;
win->_cury++;
for (; win->_maxy > win->_cury; win->_cury++)
wclrtoeol(win);
win->_cury = savey;
win->_curx = savex;
}
wclrtoeol(win);
PDC_sync(win);
return OK;
}
int clrtobot(void)
{
PDC_LOG(("clrtobot() - called\n"));
return wclrtobot(stdscr);
}
int werase(WINDOW *win)
{
PDC_LOG(("werase() - called\n"));
if (wmove(win, 0, 0) == ERR)
return ERR;
return wclrtobot(win);
}
int erase(void)
{
PDC_LOG(("erase() - called\n"));
return werase(stdscr);
}
int wclear(WINDOW *win)
{
PDC_LOG(("wclear() - called\n"));
if (!win)
return ERR;
win->_clear = TRUE;
return werase(win);
}
int clear(void)
{
PDC_LOG(("clear() - called\n"));
return wclear(stdscr);
}
|
