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/* bg_test.c
Copyright (c) 1997 Michael Friman. All rights reserved.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <strings.h>
#include <vga.h>
#include <vgagl.h>
/*
If you really want to see background runin, add after
vga_setmode vga_runinbackground(1) in fun.
Remember to compile the svgalib with background.
*/
int go = 0;
int linear = 0;
void drawline(int x1, int y1, int x2, int y2)
{
if (linear)
{
gl_line(x1,y1,x2,y2,vga_white());
}
else
{
vga_drawline(x1,y1,x2,y2);
}
}
void set_go(void)
{
go=1;
return;
}
int main(int argc, char *argv[])
{
int x[2];
int y[2];
int counter;
int mode;
if ((argc > 2) || ((argc == 2) && (strcmp(argv[1], "linear") != 0)))
{
fputs("Usage: bg_test [linear]\n", stderr);
exit(2);
}
vga_init();
printf("This is small test for background runin.\n");
if (vga_runinbackground_version()==1)
{
printf("Background runin enabled. mode 1\n");
}
else
{
printf("Svgalib is not mode 1 background capable.\n");
printf("Test ended.\n");
return(0);
}
printf("Switch to another console when the box appears.\n");
printf("Press enter to continue or CTRL-c to stop.\n");
getchar();
mode = vga_getdefaultmode();
if (mode < 0)
mode = G320x200x256;
if (argc == 2)
{
if (vga_getmodeinfo(mode)->flags & CAPABLE_LINEAR)
{
vga_setlinearaddressing();
fputs("Linear mode set.\n", stderr);
linear = 1;
}
else
{
fputs("Linear mode unavailable.\n", stderr);
}
}
vga_setmode(mode);
if (linear)
gl_setcontextvga(mode);
vga_runinbackground(VGA_GOTOBACK,set_go);
vga_runinbackground(1);
x[0]=0;
y[0]=0;
x[1]=vga_getxdim()-1;
y[1]=vga_getydim()-1;
if (!linear)
vga_setcolor(vga_white());
counter=(y[1]/11)*5+1;
while(counter<=(y[1]/11)*6)
{
drawline((x[1]/11)*5,counter,(x[1]/11)*6,counter);
counter++;
}
/* Program won't go further without console switching. */
while(!go) usleep(1000);
drawline(x[0],y[0],x[1],y[0]);
drawline(x[1],y[0],x[1],y[1]);
drawline(x[1],y[1],x[0],y[1]);
drawline(x[0],y[1],x[0],y[0]);
drawline(x[0],y[0],x[1],y[1]);
drawline(x[1],y[0],x[0],y[1]);
while(!vga_getkey());
vga_setmode(TEXT);
printf("Ok.\n");
return(0);
}
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