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1.1 root 1: /*********************************************************************
2: * COPYRIGHT NOTICE *
3: **********************************************************************
4: * This software is copyright (C) 1982 by Pavel Curtis *
5: * *
6: * Permission is granted to reproduce and distribute *
7: * this file by any means so long as no fee is charged *
8: * above a nominal handling fee and so long as this *
9: * notice is always included in the copies. *
10: * *
11: * Other rights are reserved except as explicitly granted *
12: * by written permission of the author. *
13: * Pavel Curtis *
14: * Computer Science Dept. *
15: * 405 Upson Hall *
16: * Cornell University *
17: * Ithaca, NY 14853 *
18: * *
19: * Ph- (607) 256-4934 *
20: * *
21: * Pavel.Cornell@Udel-Relay (ARPAnet) *
22: * decvax!cornell!pavel (UUCPnet) *
23: *********************************************************************/
24:
25: /*
26: ** lib_addch.c
27: **
28: ** The routine waddch().
29: **
30: ** $Log: lib_addch.c,v $
31: * Revision 1.8 93/04/12 14:13:19 bin
32: * Udo: third color update
33: *
34: * Revision 2.3 92/11/01 15:55:32 munk
35: * Second parameter is a chtype now
36: *
37: * Revision 1.2 92/04/13 14:36:58 bin
38: * update by vlad
39: *
40: * Revision 2.2 91/04/20 17:52:20 munk
41: * Usage of register variables
42: *
43: * Revision 2.1 82/10/25 14:46:23 pavel
44: * Added Copyright Notice
45: *
46: * Revision 2.0 82/10/24 15:19:46 pavel
47: * Beta-one Test Release
48: *
49: **
50: */
51:
52: #ifdef RCSHDR
53: static char RCSid[] =
54: "$Header: /src386/usr/lib/ncurses/RCS/lib_addch.c,v 1.8 93/04/12 14:13:19 bin Exp Locker: bin $";
55: #endif
56:
57: #include "curses.h"
58: #include "curses.priv.h"
59: #include "terminfo.h"
60: #include "unctrl.h"
61:
62:
63: waddch(win, ch)
64: register WINDOW *win;
65: chtype ch;
66: {
67: register int x, y;
68: int newx;
69:
70: #ifdef TRACE
71: if (_tracing)
72: _tracef("waddch(%o,%o) called", win, ch);
73: #endif
74:
75: x = win->_curx;
76: y = win->_cury;
77:
78: if (y > win->_maxy || x > win->_maxx || y < 0 || x < 0)
79: return(ERR);
80:
81: switch (ch & A_CHARTEXT)
82: {
83: case '\t':
84: for (newx = x + (8 - (x & 07)); x < newx; x++)
85: if (waddch(win, ' ') == ERR)
86: return(ERR);
87: return(OK);
88:
89: case '\n':
90: wclrtoeol(win);
91: if (SP->_nl)
92: x = 0;
93: goto newline;
94:
95: case '\r':
96: x = 0;
97: break;
98:
99: case '\b':
100: if (--x < 0)
101: x = 0;
102: break;
103:
104: default:
105: if ((ch & A_CHARTEXT) < ' ')
106: return(waddstr(win, unctrl(ch)));
107:
108: ch |= (ch & A_COLOR) ? (win->_attrs & ~A_COLOR) : win->_attrs;
109:
110: /* ch |= win->_attrs; */
111:
112: if (win->_line[y][x] != ch)
113: {
114: if (win->_firstchar[y] == _NOCHANGE)
115: win->_firstchar[y] = win->_lastchar[y] = x;
116: else if (x < win->_firstchar[y])
117: win->_firstchar[y] = x;
118: else if (x > win->_lastchar[y])
119: win->_lastchar[y] = x;
120:
121: win->_numchngd[y]++;
122: }
123:
124: win->_line[y][x++] = ch;
125: if (x > win->_maxx)
126: {
127: x = 0;
128: newline:
129: y++;
130: if (y > win->_regbottom)
131: {
132: y--;
133: if (win->_scroll)
134: scroll(win);
135: else
136: return ERR;
137: }
138: }
139: break;
140: }
141:
142: win->_curx = x;
143: win->_cury = y;
144:
145: return(OK);
146: }
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