advertisement.c

svga演示代码,需要安装svgalib方可运行

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <vga.h>
#include <vgagl.h>
void draw_bmp(int x,int y,int w,int h,char *filename);
void draw_text(int x,int y,unsigned char *ch);
main ()
{
int i;
vga_init();
vga_setmode(G800x600x256);
gl_setcontextvga(G800x600x256);
for(;;)
{
sleep(2);
draw_hello();
sleep(2);
gl_clearscreen(0);
draw_bmp(200,200,320,200,"thi.bmp");
for(i=200;i>0;i-=5)
{
gl_fillbox(0,570,800,30,0);
draw_text(i,580,(unsigned char *)"你猜你中什么毒了?");
usleep(200000);
//gl_clearscreen(0);
}
gl_clearscreen(0);
//sleep(1);
draw_bmp(0,0,800,600,"0002.bmp");
sleep(2);
gl_clearscreen(0);
}
vga_getch();
vga_setmode(TEXT);
return 0;
}
void draw_text(int x,int y,unsigned char *ch)
{
	int i,j,k,c,l;
	unsigned char mat[16][2];
	unsigned char mat1[16];
	char *p;
	FILE *hzk,*ywk;
	vga_setcolor(1);
	hzk=fopen("hzk16","rb");
	ywk=fopen("asc16","rb");
	if (hzk==NULL)
	{
		perror("Open hzk16 file error");
		exit(1);
	}
	if(ywk==NULL)
	{
		perror("Open asc16 file error");
		exit(1);
	}
	l=strlen(ch);
	vga_setrgbcolor(251,251,0);
	for(c=0;c<l;c++)
	{
		if(ch[c]>127)
		{
			i=ch[c]-0xa0;j=ch[c+1]-0xa0;
			fseek(hzk,(94*(i-1)+(j-1))*32,SEEK_SET);
			fread(mat,32,1,hzk);
			for(i=0;i<16;i++)
				for(j=0;j<2;j++)
					for(k=0;k<8;k++)
						if(mat[i][j]&(0x80>>k))
							vga_drawpixel(x+c*8+8*j+k,y+i);
			c++;
		}
		else
		{
			fseek(ywk,ch[c]*16,SEEK_SET);
			fread(mat1,16,1,ywk);
			for(i=0;i<16;i++)
				for(k=0;k<8;k++)
					if(mat1[i]&(0x80>>k))
						vga_drawpixel(x+c*8+k,y+i);
		}
	}
	}
void draw_bmp(int x,int y,int w,int h,char *filename)
{
int fd;
char header[50];
void *image;
unsigned char *rgb;
unsigned char *data;
int i;
gl_setrgbpalette();
image = alloca(w*h);
if((fd = open(filename,O_RDONLY)) == -1)
{
printf("can not open file\n");
exit(0);
}
read(fd, header, 54);

rgb = alloca(3);
data = alloca(4);
for (i=0; i<256; i++) 
{
read(fd, data, 4);
rgb[0] = (char)((int)data[2] /4);
rgb[1] = (char)((int)data[1] /4);
rgb[2] = (char)((int)data[0] /4);
gl_setpalettecolors(i,1,rgb);
}
read(fd, image, w*h);
close(fd);
gl_putbox(x,y,w,h,image);
}
draw_hello()
{
int i;
unsigned char *colors;
for(i=0;i<100;i++)
	{
        	vga_drawscansegment(colors,70,10+i,30);
		vga_drawscansegment(colors,145,10+i,30);
		vga_drawscansegment(colors,100,50+i/4,45);	
	}
	for(i=0;i<100;i++)
	{
	        vga_drawscansegment(colors,220,10+i,30);
		vga_drawscansegment(colors,220,10+i/4,80);
	        vga_drawscansegment(colors,220,50+i/4,80);
		vga_drawscansegment(colors,220,90+i/4,80);	
	}
	for(i=0;i<100;i++)	
	{
		vga_drawscansegment(colors,350,10+i,30);
		vga_drawscansegment(colors,350,90+i/4,80);
	}
	for(i=0;i<100;i++)	
	{
		vga_drawscansegment(colors,470,10+i,30);
		vga_drawscansegment(colors,470,90+i/4,80);
	}
	
	for(i=0;i<100;i++)
	{
		vga_drawscansegment(colors,600,10+i,30);
		vga_drawscansegment(colors,630,10+i/4,30);
		vga_drawscansegment(colors,630,85+i/4,30);
		vga_drawscansegment(colors,660,10+i,30);	
	}
}