1 /* Program to test the svgalib keyboard functions. */
2 /* and stress vga_safety_fork() */
3
4 #include <unistd.h>
5 #include <stdlib.h>
6 #include <stdio.h>
7 #include <signal.h>
8 #include <string.h>
9 #include <time.h>
10 #include <vga.h>
11 #include <vgagl.h>
12 #include <vgakeyboard.h>
13
14 #define zero_sa_mask(maskptr) memset(maskptr, 0, sizeof(sigset_t))
15
16 static char sig2release[] =
17 {SIGHUP, SIGINT, SIGQUIT, SIGILL,
18 SIGTRAP, SIGIOT, SIGBUS, SIGFPE,
19 SIGSEGV, SIGPIPE, SIGALRM, SIGTERM,
20 SIGXCPU, SIGXFSZ, SIGVTALRM,
21 SIGPROF, SIGUSR1};
22
23
newcolor(void)24 static int newcolor(void)
25 {
26 if (BYTESPERPIXEL == 1)
27 return random() % 15 + 1;
28 return gl_rgbcolor(random() & 255, random() & 255, random() & 255);
29 }
30
31
timeout(int sig)32 static void timeout(int sig)
33 {
34 keyboard_close();
35 vga_setmode(TEXT);
36 puts("Automatic termination after 60 seconds.");
37 exit(1);
38 }
39
shutdown(void)40 void shutdown(void)
41 {
42 puts("Shutdown called!");
43 }
44
main(void)45 void main(void)
46 {
47 struct sigaction siga;
48 int vgamode, color, leftpressed;
49 int x, y;
50
51 printf("\nWARNING: This program will set the keyboard to RAW mode.\n"
52 "The keyboard routines in svgalib have not been tested\n"
53 "very much. There may be no recovery if something goes\n"
54 "wrong.\n\n"
55 "Press ctrl-c now to bail out, enter to continue.\n"
56 "In the test itself, use 'q' or Escape to quit.\n"
57 "It will also terminate after 60 seconds.\n"
58 "Use any cursor keys to move, keypad 0 or enter to change color.\n\n"
59 "\aWARNING, this version of keytest explicitly removes all svgalib\n"
60 "automatic restore funcs, s.t. when you kill it from the outside\n"
61 "only vga_safety_fork() can rescue you. Use this svgalib test tool\n"
62 "with EXTREME! care.\n"
63 );
64
65 getchar();
66
67 vga_safety_fork(shutdown); /* Does already enter a videomode */
68
69 vga_init();
70
71 /* Never do this in your code! */
72 siga.sa_flags = 0;
73 zero_sa_mask(&(siga.sa_mask));
74 for (x = 0; x < sizeof(sig2release); x++) {
75 siga.sa_handler = SIG_DFL;
76 sigaction(sig2release[x], &siga, NULL);
77 }
78
79 vgamode = vga_getdefaultmode();
80 if ((vgamode == -1) || (vga_getmodeinfo(vgamode)->bytesperpixel != 1))
81 vgamode = G640x480x256;
82
83 if (!vga_hasmode(vgamode)) {
84 printf("Mode not available.\n");
85 exit(1);
86 }
87 vga_setmode(vgamode);
88 vga_setlinearaddressing();
89 gl_setcontextvga(vgamode);
90 gl_enableclipping();
91
92 signal(SIGALRM, timeout);
93
94 /* This installs the default handler, which is good enough for most */
95 /* purposes. */
96 if (keyboard_init()) {
97 printf("Could not initialize keyboard.\n");
98 exit(1);
99 }
100 /* Translate to 4 keypad cursor keys, and unify enter key. */
101 keyboard_translatekeys(TRANSLATE_CURSORKEYS | TRANSLATE_KEYPADENTER |
102 TRANSLATE_DIAGONAL);
103 /* (TRANSLATE_DIAGONAL seems to give problems.) Michael: No doesn't...
104 but might not do what you expect.. */
105
106 alarm(60); /* Terminate after 60 seconds for safety. */
107
108 x = WIDTH / 2;
109 y = HEIGHT / 2;
110 color = newcolor();
111 leftpressed = 0;
112 for (;;) {
113 /* Draw moving box. */
114 gl_fillbox(x, y, 5, 5, color);
115
116 /* Draw key status bar at top of screen. */
117 gl_putbox(0, 0, 128, 1, keyboard_getstate());
118
119 /* Wait about 1/100th of a second. */
120 /* Note that use of this function makes things less */
121 /* smooth because of timer latency. */
122 usleep(10000);
123
124 keyboard_update();
125
126 /* Move. */
127 if (keyboard_keypressed(SCANCODE_CURSORLEFT))
128 x--;
129 if (keyboard_keypressed(SCANCODE_CURSORRIGHT))
130 x++;
131 if (keyboard_keypressed(SCANCODE_CURSORUP))
132 y--;
133 if (keyboard_keypressed(SCANCODE_CURSORDOWN))
134 y++;
135
136 /* Boundary checks. */
137 if (x < 0)
138 x = 0;
139 if (x >= WIDTH)
140 x = WIDTH - 1;
141 if (y < 1)
142 y = 1;
143 if (y >= HEIGHT)
144 y = HEIGHT - 1;
145
146 /* Check for color change. */
147 if (keyboard_keypressed(SCANCODE_KEYPAD0) ||
148 keyboard_keypressed(SCANCODE_ENTER)) {
149 if (!leftpressed) {
150 color = newcolor();
151 leftpressed = 1;
152 }
153 } else
154 leftpressed = 0;
155
156 if (keyboard_keypressed(SCANCODE_Q) ||
157 keyboard_keypressed(SCANCODE_ESCAPE))
158 break;
159 }
160
161 keyboard_close(); /* Don't forget this! */
162
163 vga_setmode(TEXT);
164 exit(0);
165 }
166