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cos2000v2/lib/video.c

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#include "vga.h"
#include "video.h"
#include "stdarg.h"
console vc[8]={
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0},
{0x07,0,0,0,0,0,0,0}};
u8 usedvc=0;
/*******************************************************************************/
/* Fixe l'attribut courant */
void setattrib(u8 att)
{
static const u8 ansitovga[] =
{
0, 4, 2, 6, 1, 5, 3, 7
};
u8 tempattr;
tempattr = vc[usedvc].attrib;
if(att == 0)
tempattr = 0x07; /* Couleur Grise sur fond noir */
else if (att == 5)
tempattr |= 0x80;
else if (att == 7)
tempattr = ((tempattr&0x0F)<<4)+((tempattr&0xF0)>>4);
else if (att == 8)
tempattr = 0;
else if (att == 1)
tempattr |= 0x08; /* Forte intensité */
else if(att >= 30 && att <= 37)
{
att = ansitovga[att - 30];
tempattr = (tempattr & ~0x07) | att;/* couleur de premier plan */
}
else if(att >= 40 && att <= 47)
{
att = ansitovga[att - 40] << 4;
tempattr = (tempattr & ~0x70) | att;/* couleur de fond */
}
vc[usedvc].attrib = tempattr;
}
/*******************************************************************************/
/* gere l'ansi */
bool makeansi(u8 c)
{
/* state machine to handle the escape sequences */
switch(vc[usedvc].ansi)
{
case 0:
/* ESC -- next state */
if(c == 0x1B)
{
vc[usedvc].ansi++;
return 1; /* "I handled it" */
}
break;
/* ESC */
case 1:
if(c == '[')
{
vc[usedvc].ansi++;
vc[usedvc].param1 = 0;
return 1;
}
break;
/* ESC[ */
case 2:
if(isdigit(c))
{
vc[usedvc].param1 = vc[usedvc].param1 * 10 + c - '0';
return 1;
}
else if(c == ';')
{
vc[usedvc].ansi++;
vc[usedvc].param2 = 0;
return 1;
}
/* ESC[2J -- efface l'ecran */
else if(c == 'J')
{
if(vc[usedvc].param1 == 2)
{
fill(vc[usedvc].attrib);
vc[usedvc].cursX=0;
vc[usedvc].cursY=0;
gotoscr(0,0);
vc[usedvc].ansi = 0;
return 1;
}
}
/* ESC[num1m -- met l'attribut num1 */
else if(c == 'm')
{
setattrib(vc[usedvc].param1);
vc[usedvc].ansi = 0;
return 1;
}
/* ESC[num1A -- bouge le curseur de num1 vers le haut */
else if(c == 'A')
{
vc[usedvc].cursY-=vc[usedvc].param1;
if (vc[usedvc].cursY<0) vc[usedvc].cursY=0;
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX,vc[usedvc].cursY);
return 1;
}
/* ESC[num1B -- bouge le curseur de num1 vers le bas */
else if(c == 'B')
{
vc[usedvc].cursY+=vc[usedvc].param1;
if (vc[usedvc].cursY>=getyres()-1) vc[usedvc].cursY=getyres();
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX,vc[usedvc].cursY);
return 1;
}
/* ESC[num1D -- bouge le curseur de num1 vers la gauche */
else if(c == 'D')
{
vc[usedvc].cursX-=vc[usedvc].param1;
if (vc[usedvc].cursX<0) vc[usedvc].cursX=0;
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX,vc[usedvc].cursY);
return 1;
}
/* ESC[num1C -- bouge le curseur de num1 vers la droite */
else if(c == 'C')
{
vc[usedvc].cursX+=vc[usedvc].param1;
if (vc[usedvc].cursX>=getxres()-1) vc[usedvc].cursX=getxres();
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX,vc[usedvc].cursY);
return 1;
}
break;
/* ESC[num1; */
case 3:
if(isdigit(c))
{
vc[usedvc].param2 = vc[usedvc].param2 * 10 + c - '0';
return 1;
}
else if(c == ';')
{
vc[usedvc].ansi++;
vc[usedvc].param3 = 0;
return 1;
}
/* ESC[num1;num2H ou ESC[num1;num2f-- bouge le curseur en num1,num2 */
else if((c == 'H')||(c == 'f'))
{
/* Remet la position du curseur matériel a num1,num2 */
gotoscr(vc[usedvc].param2,vc[usedvc].param1);
/* Remet la position du curseur logiciel a num1,num2 */
vc[usedvc].cursX=vc[usedvc].param2;
vc[usedvc].cursY=vc[usedvc].param1;
vc[usedvc].ansi = 0;
return 1;
}
/* ESC[num1;num2m -- met les attributs num1,num2 */
else if(c == 'm')
{
setattrib(vc[usedvc].param1);
setattrib(vc[usedvc].param2);
vc[usedvc].ansi = 0;
return 1;
}
break;
/* ESC[num1;num2;num3 */
case 4:
if(isdigit(c))
{
vc[usedvc].param3 = vc[usedvc].param3 * 10 + c - '0';
return 1;
}
/* ESC[num1;num2;num3m -- met les attributs num1,num2,num3 */
else if(c == 'm')
{
setattrib(vc[usedvc].param1);
setattrib(vc[usedvc].param2);
setattrib(vc[usedvc].param3);
vc[usedvc].ansi = 0;
return 1;
}
break;
/* Mauvais etat >> reset */
default:
vc[usedvc].ansi = 0;
break;
}
vc[usedvc].ansi = 0;
return 0; /* Ansi fini ;)*/
}
/*******************************************************************************/
/* Change la console en cours d'utilisation */
void changevc(u8 avc)
{
usedvc=avc;
showpage(usedvc);
setpage(usedvc);
gotoscr(vc[usedvc].cursX,vc[usedvc].cursY);
}
/*******************************************************************************/
/* affiche un caractère a l'écran */
void putchar(u8 thechar)
{
showpage(usedvc);
setpage(usedvc);
if(makeansi(thechar)) return;
switch (thechar)
{
case 0x11:
if (vc[usedvc].cursY>0) vc[usedvc].cursY--;
break;
case 0x12:
if (vc[usedvc].cursY<getyres()-1) vc[usedvc].cursY++;
break;
case 0x13:
if (vc[usedvc].cursX>0) vc[usedvc].cursX--;
break;
case 0x14:
if (vc[usedvc].cursX<getxres()-1) vc[usedvc].cursX++;
break;
case 0x2:
vc[usedvc].cursX=0;
vc[usedvc].cursY=0;
break;
case 0x3:
vc[usedvc].cursX=0;
vc[usedvc].cursY=getyres()-1;
break;
case 0x19:
vc[usedvc].cursX=getxres()-1;
break;
case '\b':
if (vc[usedvc].cursX==0)
{
if (vc[usedvc].cursY>0)
{
vc[usedvc].cursX=getxres()-1;
vc[usedvc].cursY--;
}
}
else
{
vc[usedvc].cursX--;
}
showchar(vc[usedvc].cursX,vc[usedvc].cursY,' ',vc[usedvc].attrib);
break;
case '\t':
vc[usedvc].cursX=(vc[usedvc].cursX + 8) & ~(8 - 1);
break;
case '\n':
vc[usedvc].cursX=0;
break;
case '\r':
vc[usedvc].cursX=0;
vc[usedvc].cursY++;
break;
default:
if (thechar>=' ')
{
showchar(vc[usedvc].cursX,vc[usedvc].cursY,thechar,vc[usedvc].attrib);
vc[usedvc].cursX++;
}
break;
}
if (vc[usedvc].cursX>=getxres())
{
vc[usedvc].cursX=0;
vc[usedvc].cursY++;
}
if (vc[usedvc].cursY>=getyres())
{
scroll(1,vc[usedvc].attrib);
vc[usedvc].cursY=getyres()-1;
}
gotoscr(vc[usedvc].cursX,vc[usedvc].cursY);
}
/*******************************************************************************/
/* affiche une chaine de caractère a l'écran */
void print(u8* string)
{
u8 *source;
source = string;
while(*source!=0)
{
putchar(*source++);
}
}
/*******************************************************************************/
/* affiche une chaine de caractère formaté a l'ecran */
void printf (const u8 *string, ...)
{
va_list ap;
u8 buffer[50];
u8 *pointer;
u8 radix;
bool signe;
long num;
va_start(ap, string);
while(*string!= 0)
{
if (*string != '%')
putchar (*string);
else
{
switch (*++string)
{
case 'c':
putchar (va_arg(ap, int));
break;
case 'u':
radix=10;
signe=0;
showstring:
num=va_arg(ap, int);
pointer = buffer + 50 - 1;
*pointer = '\0';
if ((signe==1)&&(num<0))
{
num = -num;
signe++;
}
do
{
unsigned long temp;
temp = (unsigned long)num % radix;
pointer--;
if(temp < 10)
*pointer = temp + '0';
else
*pointer = temp - 10 + 'a';
num = (unsigned long)num / radix;
}
while(num != 0);
if (signe>1) *(--pointer)='-';
while (*pointer!=0) putchar(*pointer++);
break;
case 'o':
radix = 8;
signe=0;
goto showstring;
case 'd':
case 'i':
radix=10;
signe=1;
goto showstring;
case 'x':
radix=16;
signe=0;
goto showstring;
case 's':
pointer=va_arg(ap, u8*);
if (!pointer) pointer="(null)";
while (*pointer!=0) putchar(*pointer++);
break;
case '%':
putchar ('%');
break;
default:
putchar (va_arg(ap, int));
break;
}
}
string++;
}
va_end(ap);
}
/*******************************************************************************/
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