void cls(){
if(ProcessConsole->buffering==NO_BUFFER){
_memsetw(ProcessConsole->video_memory,(ProcessConsole->color<<8)|' ',ProcessConsole->size/2+1);
}else{
_memsetw(ProcessConsole->buffer,(ProcessConsole->color<<8)|' ',ProcessConsole->size/2+1); //use 'space' so the color is printed
if(ProcessConsole==CurrentConsole && ProcessConsole->buffering==BUFFER_REFRESH){
RefreshConsole();
}
}
}
void scrolldowna(unsigned int lines){ //this is improperly named
memcpy(ProcessConsole->buffer,
ProcessConsole->buffer+((ProcessConsole->width*2)*lines),
ProcessConsole->size);
if(ProcessConsole->buffering!=BUFFER_REFRESH){
_memsetw(ProcessConsole->buffer+((ProcessConsole->width*2)*(ProcessConsole->height-1)),(ProcessConsole->color<<8)+' ',ProcessConsole->width*2);
}else{
_memsetw(ProcessConsole->buffer+((ProcessConsole->width*2)*(ProcessConsole->height-1)),(ProcessConsole->color<<8)+' ',ProcessConsole->width*2);
// _memsetw(ProcessConsole->video_memory+((ProcessConsole->width*2)*(ProcessConsole->height-1)),(ProcessConsole->color<<8)+' ',ProcessConsole->width*2);
}
// memset(ProcessConsole->buffer+ProcessConsole->size-(ProcessConsole->width*2*2),(ProcessConsole->color<<8)|' ',ProcessConsole->width*2*2); //sets
ProcessConsole->curx=0;
ProcessConsole->cury-=lines;
// RefreshConsole();
}
void putc(unsigned char c)
{
u_short vid_mem_spot;
//lock_mutex_block(&putc_mutex);
switch(c)
{
case '\n': // new line
_csr_y++;
_csr_x = 0;
break;
case '\r': // carrige return
_csr_y++;
_csr_x = 0;
break;
case '\b':
_csr_x--;
break;
default: // normal charactor
vid_mem_spot = ((_csr_y * 80) + _csr_x);
vid_mem_spot = vid_mem_spot << 1; // multiply by 2
vidmem2[vid_mem_spot] = c;
vidmem2[vid_mem_spot + 1] = 0x07; // white on black text
_csr_x++;
break;
};
if(_csr_x > 79) // last charactor was at the end of the line
{
_csr_y++; // next line down
_csr_x = 0;
};
if(_csr_y > 24) // we are at the bottom visable line
{
_memcpy(0xB8000, 0xB8000+(80*2), 24*80*2); // scroll the video memory up a line
_memsetw(0xB8000+(24*80*2), 0x0720, 80); // clear the bottom line
_csr_y=24;
};
update_cursor(_csr_y, _csr_x);
//unlock_mutex(&putc_mutex);
};
CONSOLE *CreateConsole(unsigned char type,unsigned int owner, char *name,unsigned char video_mode){
CONSOLE *new_console;
__asm("cli"); //disable ints so no drawing crap going on
new_console=malloc(sizeof(CONSOLE));
if(new_console==0){return 0;}
LastConsole->next=new_console;
new_console->prev=LastConsole;
LastConsole=new_console;
new_console->next=FirstConsole;
//copy the name
new_console->name=malloc(strlen(name));
memcpy(new_console->name,name,strlen(name));
//set video mode info
new_console->video_mode=video_mode;
new_console->vga_registers=video_modes[video_mode];
memset(&new_console->ConsoleEvents,0,sizeof(CONSOLE_EVENTS)); //zero the events
//must resolve the font for each video mode
switch(video_mode){ //set appropriate fonts, and sizes
case 0:
new_console->font=g_8x8_font;
new_console->text_height=8;
new_console->width=90;
new_console->height=60;
new_console->size=90*60*2;
break;
case 1:
new_console->font=g_8x16_font;
new_console->text_height=16;
new_console->width=80;
new_console->height=25;
new_console->size=80*25*2;
break;
case 2:
new_console->font=g_8x16_font;
new_console->text_height=16;
new_console->width=90;
new_console->height=30;
new_console->size=90*30*2;
break;
case 3:
new_console->font=g_8x8_font;
new_console->text_height=8;
new_console->width=80;
new_console->height=50;
new_console->size=80*50*2;
break;
case 4:
new_console->font=g_8x8_font;
new_console->text_height=8;
new_console->width=40;
new_console->height=50;
new_console->size=40*50*2;
break;
case 5:
new_console->font=g_8x16_font;
new_console->text_height=16;
new_console->width=40;
new_console->height=25;
new_console->size=40*25*2;
break;
}
//allocate buffer, even if buffering is disabled
new_console->buffer=malloc(new_console->size+(new_console->width*2*2)); //provides room for 2 extra lines to avoid memory overwriting
new_console->video_memory=0xB8000;
//set owner process
//only the owner process can kill a console(anyone can request..)
//unless of course it is a system process(ring0 drivers or kernel services)
new_console->owner_process=owner;
switch(type){
case SYSTEM_CONSOLE: //same as virtual console
new_console->buffering=NO_BUFFER;
break;
case USER_CONSOLE:
default: //also the default
new_console->buffering=NORMAL_BUFFER;
break;
case REALTIME_CONSOLE:
new_console->buffering=BUFFER_REFRESH; //puets instantly refreshed
break;
}
//zero out the cursor
new_console->curx=0;
new_console->cury=0;
//set color to white on black
new_console->color=0x0F;
new_console->text=TRUE;
CurrentConsole=new_console; //replace this with SwitchConsole..
ProcessConsole=new_console;
SwitchConsole(CurrentConsole);
_memsetw(ProcessConsole->buffer,(ProcessConsole->color<<8)|' ',ProcessConsole->size/2+1); //cls...
_memsetw(ProcessConsole->video_memory,(ProcessConsole->color<<8)|' ',ProcessConsole->size/2+1); //and the actual video memory
__asm("sti"); //renabled interrupts
return new_console;
}
