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
|
/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
* details. If they are missing then this copy is in violation of *
* the copyright conditions. */
/*
* lib_pad.c
* newpad -- create a new pad
* pnoutrefresh -- refresh a pad, no update
* pechochar -- add a char to a pad and refresh
*/
#include <stdlib.h>
#include "curses.priv.h"
WINDOW *newpad(int l, int c)
{
WINDOW *win;
chtype *ptr;
int i, j;
T(("newpad(%d, %d) called", l, c));
if (l <= 0 || c <= 0)
return NULL;
if ((win = makenew(l,c,0,0)) == NULL)
return NULL;
win->_flags |= _ISPAD;
for (i = 0; i < l; i++) {
if ((win->_line[i] = (chtype *) calloc(c, sizeof(chtype))) == NULL) {
for (j = 0; j < i; j++)
free(win->_line[j]);
free(win->_firstchar);
free(win->_lastchar);
free(win->_line);
free(win);
return NULL;
}
else
for (ptr = win->_line[i]; ptr < win->_line[i] + c; )
*ptr++ = ' ';
}
T(("newpad: returned window is %x", win));
return(win);
}
int prefresh(WINDOW *win, int pminrow, int pmincol,
int sminrow, int smincol, int smaxrow, int smaxcol)
{
T(("prefresh() called"));
if (pnoutrefresh(win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol) != ERR)
return (doupdate());
else
return ERR;
}
int pnoutrefresh(WINDOW *win, int pminrow, int pmincol,
int sminrow, int smincol, int smaxrow, int smaxcol)
{
int i, j;
int m, n;
T(("pnoutrefresh(%x, %d, %d, %d, %d, %d, %d) called",
win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol));
if (!(win->_flags & _ISPAD))
return ERR;
T(("one"));
if (pminrow < 0) pminrow = 0;
if (pmincol < 0) pmincol = 0;
if (sminrow < 0) sminrow = 0;
if (smincol < 0) smincol = 0;
T(("two"));
if (smaxrow >= LINES || smaxcol >= COLS)
return ERR;
T(("three"));
if ((pminrow + smaxrow - sminrow > win->_maxy) ||
(pmincol + smaxcol - smincol > win->_maxx))
return ERR;
T(("pad being refreshed"));
for (i = pminrow, m = sminrow; i <= pminrow + smaxrow-sminrow;
i++, m++) {
for (j = pmincol, n = smincol; j <= pmincol + smaxcol-smincol;
j++, n++) {
if (win->_line[i][j] != newscr->_line[m][n]) {
newscr->_line[m][n] = win->_line[i][j];
if (newscr->_firstchar[m] == _NOCHANGE)
newscr->_firstchar[m] = newscr->_lastchar[m] = n;
else if (n < newscr->_firstchar[m])
newscr->_firstchar[m] = n;
else if (n > newscr->_lastchar[m])
newscr->_lastchar[m] = n;
}
}
}
win->_firstchar[i] = win->_lastchar[i] = _NOCHANGE;
win->_begx = smincol;
win->_begy = sminrow;
if (win->_clear) {
win->_clear = FALSE;
newscr->_clear = TRUE;
}
if (! win->_leave) {
newscr->_cury = win->_cury + win->_begy;
newscr->_curx = win->_curx + win->_begx;
}
return OK;
}
int pechochar(WINDOW *pad, chtype ch)
{
int x, y;
T(("echochar(%x, %x)", pad, ch));
if (pad->_flags & _ISPAD)
return ERR;
x = pad->_begx + pad->_curx;
y = pad->_begy + pad->_cury;
waddch(curscr, ch);
doupdate();
return OK;
}
|
