void initscreen(void)
{
int vgamode;
vga_init();
vgamode = G640x480x16;
if (!vga_hasmode(vgamode)) {
printf("Mode not available.\n");
exit(-1);
}
vga_setmode(vgamode);
/* Create virtual screen. */
gl_setcontextvgavirtual(vgamode);
backscreen = gl_allocatecontext();
gl_getcontext(backscreen);
/* Physical screen context. */
vga_setmode(vgamode);
gl_setcontextvga(vgamode);
physicalscreen = gl_allocatecontext();
gl_getcontext(physicalscreen);
gl_setcontext(backscreen);
/*drawgraypalette(); */
gl_clearscreen(0);
// gl_setcontextvga(vgamode);
gl_enableclipping();
gl_setclippingwindow(0, 0, 639, 479);
gl_setwritemode(WRITEMODE_OVERWRITE | FONT_COMPRESSED);
gl_setfont(8, 8, gl_font8x8);
gl_setfontcolors(0, 1);
}
void main(void)
{
struct timeval timeout;
fd_set inputs;
char bitmap[16 * 16 * 4]; /* big enough for 10x10 bitmap in any mode */
int vgamode, color, pipefd[2], x, y, button, event, cursorsize = 5;
char loop = 1, drawcursor = 1;
#ifdef USE_RAWKEYBOARD
char space_pressed = 0;
#endif
puts("This is a demo showing the abilities of the new vga_waitevent() function\n"
"If something goes wrong it might hang your machine. Thus hit <ctrl>-C now\n"
"to bailout if in doubt.\n"
"Use mouse to move cursor. 1-9,0 to set the cursor size. Space to change the\n"
"cursor color. Left button to draw. Right button or 'Q' to bailout.\n"
"The cursor goes on/off every half second by usage of a timeout passed to\n"
"vga_waitevent. Every 5 secs a string from a child process (the time) arrives\n"
"asynchronously and is displayed by the frontend.");
#ifdef USE_RAWKEYBOARD
puts("\nBEWARE! This has been compiled to use the raw keyboard. A crash might\n"
"render the console unusable. (but shouldn't).");
#endif
fputs("\nHit <Enter> if brave enough, else ^C to bailout: ", stdout);
fflush(stdout);
getchar();
fflush(stdin); /* clear I/O buffer */
pipe(pipefd);
if (fork() == 0) { /* fork off b4 touching graphix to avoid side effects */
close(pipefd[0]); /* Important: close reading side, else it remains */
/* opened by child when parent exits and we don't get */
/* a SIGPIPE! */
child(pipefd[1]);
}
vga_init();
vgamode = vga_getdefaultmode();
if (vgamode == -1)
vgamode = G320x200x256;
if (!vga_hasmode(vgamode)) {
printf("Mode not available.\n");
exit(-1);
}
/* Enable automatic mouse setup at mode set. */
vga_setmousesupport(1);
vga_setmode(vgamode);
/* Disable wrapping (default). */
/* mouse_setwrap(MOUSE_NOWRAP); */
gl_setcontextvga(vgamode);
gl_enableclipping();
/* There might be some scrap data in the serial buffer
from the mouse. It will make vga_waitevent block
because it thinks the mouse wants to send data but
then no mouse packet arrives. */
color = newcolor();
x = 0;
y = 0;
gl_setwritemode(WRITEMODE_OVERWRITE | FONT_COMPRESSED);
gl_setfont(8, 8, gl_font8x8);
gl_setfontcolors(0, newcolor());
#ifdef USE_RAWKEYBOARD
if (keyboard_init()) {
printf("Could not initialize keyboard.\n");
exit(1);
}
#endif
while (loop) {
gl_getbox(x, y, 10, 10, bitmap);
if (drawcursor) {
gl_hline(x, y, x + cursorsize, color);
gl_hline(x, y + cursorsize, x + cursorsize, color);
gl_line(x, y, x, y + cursorsize, color);
gl_line(x + cursorsize, y, x + cursorsize, y + cursorsize, color);
}
FD_ZERO(&inputs);
FD_SET(pipefd[0], &inputs);
timeout.tv_sec = 0;
timeout.tv_usec = 500000; /* 0.5 second time out */
event = vga_waitevent(VGA_MOUSEEVENT | VGA_KEYEVENT,
&inputs, NULL, NULL, &timeout);
gl_putbox(x, y, 10, 10, bitmap);
if (timeout.tv_sec || timeout.tv_usec) {
/* No timeout. An actual event occured. Reset to visible
cursor. Note:
This is actually a bug as the cursor will get visible on time
updates. However, it's better this way for demo/test
purposes. */
drawcursor = 1;
} else {
drawcursor ^= 1;
}
if (FD_ISSET(pipefd[0], &inputs))
process_input(pipefd[0]);
if (event & VGA_MOUSEEVENT) {
x = mouse_getx();
y = mouse_gety();
button = mouse_getbutton();
if (button & MOUSE_LEFTBUTTON)
gl_fillbox(x, y, cursorsize + 1, cursorsize + 1, color);
if (button & MOUSE_RIGHTBUTTON)
loop = 0;
}
if (event & VGA_KEYEVENT) {
#ifdef USE_RAWKEYBOARD
if (keyboard_keypressed(SCANCODE_1))
cursorsize = 0;
if (keyboard_keypressed(SCANCODE_2))
cursorsize = 1;
if (keyboard_keypressed(SCANCODE_3))
cursorsize = 2;
if (keyboard_keypressed(SCANCODE_4))
cursorsize = 3;
if (keyboard_keypressed(SCANCODE_5))
cursorsize = 4;
if (keyboard_keypressed(SCANCODE_6))
cursorsize = 5;
if (keyboard_keypressed(SCANCODE_7))
cursorsize = 6;
if (keyboard_keypressed(SCANCODE_8))
cursorsize = 7;
if (keyboard_keypressed(SCANCODE_9))
cursorsize = 8;
if (keyboard_keypressed(SCANCODE_0))
cursorsize = 9;
if (keyboard_keypressed(SCANCODE_Q))
loop = 0;
if (keyboard_keypressed(SCANCODE_SPACE)) {
if (!space_pressed) {
color = newcolor();
space_pressed = 1;
}
} else {
space_pressed = 0;
}
#else
switch (vga_getch()) {
case '1':
cursorsize = 0;
break;
case '2':
cursorsize = 1;
break;
case '3':
cursorsize = 2;
break;
case '4':
cursorsize = 3;
break;
case '5':
cursorsize = 4;
break;
case '6':
cursorsize = 5;
break;
case '7':
cursorsize = 6;
break;
case '8':
cursorsize = 7;
break;
case '9':
cursorsize = 8;
break;
case '0':
cursorsize = 9;
break;
case ' ':
color = newcolor();
break;
case 'q':
case 'Q':
loop = 0;
break;
default:
ping();
break;
}
#endif
}
}
#ifdef USE_RAWKEYBOARD
keyboard_close(); /* Don't forget this! */
#endif
vga_setmode(TEXT);
exit(0);
}
void main(void)
{
int vgamode, color, leftpressed;
int x, y;
vga_init();
vgamode = vga_getdefaultmode();
if ((vgamode == -1) || (vga_getmodeinfo(vgamode)->bytesperpixel != 1))
vgamode = G320x200x256;
if (!vga_hasmode(vgamode)) {
printf("Mode not available.\n");
exit(1);
}
printf("\nWARNING: This program will set the keyboard to RAW mode.\n"
"The keyboard routines in svgalib have not been tested\n"
"very much. There may be no recovery if something goes\n"
"wrong.\n\n"
"Press ctrl-c now to bail out, enter to continue.\n"
"In the test itself, use 'q' or Escape to quit.\n"
"It will also terminate after 60 seconds.\n"
"Use any cursor keys to move, keypad 0 or enter to change color.\n");
getchar();
vga_setmode(vgamode);
gl_setcontextvga(vgamode);
gl_enableclipping();
signal(SIGALRM, timeout);
/* This installs the default handler, which is good enough for most */
/* purposes. */
if (keyboard_init()) {
printf("Could not initialize keyboard.\n");
exit(1);
}
/* Translate to 4 keypad cursor keys, and unify enter key. */
keyboard_translatekeys(TRANSLATE_CURSORKEYS | TRANSLATE_KEYPADENTER |
TRANSLATE_DIAGONAL);
/* (TRANSLATE_DIAGONAL seems to give problems.) Michael: No doesn't...
but might not do what you expect.. */
alarm(60); /* Terminate after 60 seconds for safety. */
x = WIDTH / 2;
y = HEIGHT / 2;
color = newcolor();
leftpressed = 0;
for (;;) {
/* Draw moving box. */
gl_fillbox(x, y, 5, 5, color);
/* Draw key status bar at top of screen. */
gl_putbox(0, 0, 128, 1, keyboard_getstate());
/* Wait about 1/100th of a second. */
/* Note that use of this function makes things less */
/* smooth because of timer latency. */
usleep(10000);
keyboard_update();
/* Move. */
if (keyboard_keypressed(SCANCODE_CURSORLEFT))
x--;
if (keyboard_keypressed(SCANCODE_CURSORRIGHT))
x++;
if (keyboard_keypressed(SCANCODE_CURSORUP))
y--;
if (keyboard_keypressed(SCANCODE_CURSORDOWN))
y++;
/* Boundary checks. */
if (x < 0)
x = 0;
if (x >= WIDTH)
x = WIDTH - 1;
if (y < 1)
y = 1;
if (y >= HEIGHT)
y = HEIGHT - 1;
/* Check for color change. */
if (keyboard_keypressed(SCANCODE_KEYPAD0) ||
keyboard_keypressed(SCANCODE_ENTER)) {
if (!leftpressed) {
color = newcolor();
leftpressed = 1;
}
} else
leftpressed = 0;
if (keyboard_keypressed(SCANCODE_Q) ||
keyboard_keypressed(SCANCODE_ESCAPE))
break;
}
keyboard_close(); /* Don't forget this! */
vga_setmode(TEXT);
exit(0);
}
void graphicsinit(char *svgamode) //initialization of graphics, mode according to X_LOPIF
{
const short cur[32] =
{ 0x9FFF, 0x0FFF, 0x07FF, 0x83FF, 0xC1FF, 0xE0FF, 0xF067, 0xF003,
0xF001, 0xF000, 0xF800, 0xF800, 0xF800, 0xFC00, 0xFC00, 0xFC00,
0x0000, 0x6000, 0x7000, 0x3800, 0x1C00, 0x0E00, 0x0700, 0x0018,
0x07EC, 0x07EE, 0x001E, 0x03EE, 0x03EE, 0x001E, 0x00EC, 0x0002 };
xg_256=MM_Hic; //set Hicolor flag...
initpalette();
x_settextjusty(0,2); // always write text from upper left corner
#ifdef GGI
// printf("Initializing GGI visual target.\n");
ggiVis = ggiOpen (NULL);
ggiGetMode (ggiVis, &origMode);
ggiSetSimpleMode (ggiVis, 800, 600, 1, GT_16BIT);
SVGAx=799;
SVGAy=599;
ggiAddFlags(ggiVis,GGIFLAG_ASYNC);
#else
strupr(svgamode);
// printf("Console switched to graphics mode.\n");
if(strstr(svgamode,".I"))
{
vga_setmode(G640x480x64K);
gl_setcontextvga(G640x480x64K);
SVGAx=639;
SVGAy=479;
}
else
if(strstr(svgamode,".K"))
{
vga_setmode(G1024x768x64K);
gl_setcontextvga(G1024x768x64K);
SVGAx=1023;
SVGAy=767;
}
else
if(strstr(svgamode,".L"))
{
vga_setmode(G1280x1024x64K);
gl_setcontextvga(G1280x1024x64K);
SVGAx=1279;
SVGAy=1023;
}
if(strstr(svgamode,".M"))
{
vga_setmode(G1600x1200x64K);
gl_setcontextvga(G1600x1200x64K);
SVGAx=1599;
SVGAy=1199;
}
{
vga_setmode(G800x600x64K);
gl_setcontextvga(G800x600x64K);
SVGAx=799;
SVGAy=599;
}
vga_runinbackground(1);
vga_oktowrite();
gl_setwritemode(FONT_COMPRESSED|WRITEMODE_MASKED);
gl_setfontcolors(0,vga_white());
//gl_setfont(8,8,gl_font8x8);
gl_setrgbpalette();
gl_enableclipping();
#endif
x_defcurs( (short *)cur, (short *)&cur[16], 15); //mouse kursor
}
