// Demostraci¢n del uso del RATON en SVGA
// Jos‚ David Guill‚n
//
// ßßßßßßßßßßßßßßß
// ßFuTuReßViSiOnß
// ßßßßßßßßßßßßßßß
// ßßÜÜÜÜÜßÜÜÜßßßß
// ßß ÛßÛ ßÜßß
// ßßÜ ÛßÛ Ûßß
// ßßßÜÜÜßßÛÜÜß ßß
//
//
//
#include <dos.h>
#include <conio.h>
#include <stdlib.h>
#include <graphics.h>
void InicializaSVGA(void);
void PreparaCuadricula256col(void);
extern int far _Cdecl Svga256_fdriver[];
int huge DetectVGA256(){ return 2; }
#define T 255
#define C1 31
#define C2 4
#define C3 12
#define Ancho_Pantalla 640
#define Largo_Pantalla 640
unsigned char Puntero [ /* 21 * 28 */ ] = {
T, T, T, T, T, T, C1, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, T, T, T, T, C1, C2, C1, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, T, T, T, C1, C2, C2, C2, C1, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, T, T, C1, C3, C2, C2, C2, C2, C1, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, T, C1, C3, C3, C2, C2, C2, C2, C2, C1, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, C1, C3, C3, C2, C2, C2, C2, C2, C2, C2, C1, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, C1, C1, C1, C1, C2, C2, C2, C1, C1, C1, C1, T, T, T, T, T, C1, C1, C1, C1, C1, C1, C1, C1, T, T, T
, T, T, T, T, C1, C3, C2, C2, C1, T, T, T, T, T, T, T, C1, C2, C2, C2, C2, C2, C2, C2, C2, C1, T, T
, T, T, T, T, C1, C3, C2, C2, C1, T, T, T, T, T, T, C1, C2, C2, C2, C1, C1, C1, C1, C2, C2, C2, C1, T
, T, T, T, T, C1, C3, C2, C2, C1, T, T, T, T, T, C1, C2, C2, C2, C1, T, T, T, T, C1, C2, C2, C2, C1
, T, T, T, T, C1, C3, C2, C2, C1, T, T, T, T, T, T, C1, C2, C2, C1, T, T, T, T, C1, C2, C2, C1, T
, T, T, T, C1, C3, C2, C2, C2, C2, C1, T, T, T, T, T, T, C1, C1, T, T, T, T, C1, C2, C2, C1, T, T
, T, T, C1, C3, C2, C2, C1, C2, C2, C2, C1, T, T, T, T, T, T, T, T, T, T, C1, C2, C2, C1, T, T, T
, T, C1, C3, C2, C2, C1, T, C1, C2, C2, C2, C1, T, T, T, T, T, T, T, T, C1, C2, C2, C1, T, T, T, T
, C1, C3, C2, C2, C1, T, T, T, C1, C2, C2, C2, C1, T, T, T, T, T, T, C1, C2, C2, C1, T, T, T, T, T
, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, C1, C2, C2, C1, T, T, T, T, T
, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, C1, C1, T, T, T, T, T, T
, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T
, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, C1, C1, T, T, T, T, T, T
, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, C1, C2, C2, C1, T, T, T, T, T
, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, C1, C1, T, T, T, T, T, T
};
char raton = 0;
unsigned char *Fondo_Raton;
int X_Mouse, Y_Mouse;
int Anclar_Raton(void);
void Inicializa_Raton(int x1, int y1, int x2, int y2);
unsigned char Pon_Pixel( unsigned long y, unsigned long x, unsigned char color );
void main( void )
{
char Resultado;
InicializaSVGA();
PreparaCuadricula256col();
Inicializa_Raton( 10, 10, 630, 470);
if ( !raton ) return;
Resultado = Anclar_Raton();
// Regresamos al modo texto
restorecrtmode();
if ( Resultado )
{
if ( X_Mouse == Y_Mouse && Y_Mouse == -1 )
cprintf( " Se pulso una tecla, 1§Scan Code: % 3d \n\r", getch() );
else
cprintf( " Se pulso un Boton en X: % 3d -- Y: % 3d \n\r", X_Mouse, Y_Mouse );
}
else
cprintf( " Error Interno de asignacion de memoria \n\r" );
}
// los par metros son las cotas para el raton
void Inicializa_Raton(int x1, int y1, int x2, int y2)
{
int px = 50, py = 50;
if ( Y_Mouse != -1 && X_Mouse != -1 )
{
px = X_Mouse; py = Y_Mouse;
}
union REGS ent, sal;
long dir;
ent.x.ax = 0;
int86(0x33, &ent, &sal); /* averigua si hay rat¢n conectado */
raton = sal.x.ax; /* indica a la variable global el estado
del raton */
if(raton!=0) {
ent.x.ax = 15;
ent.x.cx = 5;
ent.x.dx = 11;
int86(0x33, &ent, &sal); /* fija la raz¢n mickey/pixel */
ent.x.ax = 7;
ent.x.cx = x1;
ent.x.dx = x2;
int86(0x33, &ent, &sal); /* fija la posici¢n m x. y m¡n. horizontal */
ent.x.ax = 8;
ent.x.cx = y1;
ent.x.dx = y2;
int86(0x33, &ent, &sal); /* fija la posici¢n m x. y m¡n. vertical */
ent.x.ax = 4;
ent.x.cx = px;
ent.x.dx = py;
int86(0x33, &ent, &sal); /* fija la posici¢n del rat¢n */
ent.x.ax = 2;
int86(0x33, &ent, &ent);
}
}
// De esta funci¢n solo se regresa cuando se pulse una tecla o un Boton.
// Devuelve 1 si todo va bien, o 0 si hay un error interno de gesti¢n.
int Anclar_Raton(void)
{
char i,j;
union REGS io;
io.x.ax = 3;
static int Old_X_Mouse = X_Mouse, Old_Y_Mouse = Y_Mouse;
char ok = 0, Draw = 1;
if ( ( Fondo_Raton = (char *)malloc( 28*21 ) ) == NULL )
return 0;
do{
if( Draw )
{
for( i = 0; i < 21; i++)
for( j = 0; j < 28; j++ )
{
Fondo_Raton[ i*28 + j ] = getpixel( (j + X_Mouse), (i + Y_Mouse) );
if( Puntero[ i*28 + j ] != 255 )
putpixel( (j + X_Mouse), (i + Y_Mouse), Puntero[ i*28 + j ] );
}
}
Draw = 0;
// Esperamos a que se mueva el raton / pulse un boton o una tecla
do{
// Gestionamos las teclas
if ( kbhit() )
{
X_Mouse = Y_Mouse = -1;
ok = 1;
break;
// Si no hay teclas, los par metros del RATON habr n cambiado
} else {
int86(0x33, &io, &io); // lee posici¢n y estados del bot¢n
X_Mouse = io.x.cx;
Y_Mouse = io.x.dx;
// ¨ Se Puls¢ Un BOTON ?
// B.Izquierdo B. Derecho
if ( (io.x.bx & 1) != 0 || ( (io.x.bx >> 1) & 1 ) != 0 )
{
ok = 1;
break;
} else
/* ¨ Se movi¢ el Puntero ? */
if ( X_Mouse != Old_X_Mouse || Y_Mouse != Old_Y_Mouse )
{
// Restauramos el contenido de la pantalla
for( i = 0; i < 21; i++)
for( j = 0; j < 28; j++ )
putpixel( ( j + Old_X_Mouse), (i + Old_Y_Mouse), Fondo_Raton[ i*28 + j ] );
Old_X_Mouse = X_Mouse;
Old_Y_Mouse = Y_Mouse;
Draw = 1;
break;
}
}
}while( 1 );
}while(!ok);
// Restauramos el contenido de la pantalla
for( i = 0; i < 21; i++)
for( j = 0; j < 28; j++ )
putpixel( ( j + Old_X_Mouse), (i + Old_Y_Mouse), Fondo_Raton[ i*28 + j ] );
free( Fondo_Raton );
return 1;
}
void InicializaSVGA(void) {
int Gd = DETECT, Gm;
int Drv, errorcode;
installuserdriver("Svga256",DetectVGA256);
initgraph(&Gd,&Gm,"");
errorcode = graphresult();
if (errorcode != grOk)
{
cprintf("Graphics error: %s\n", grapherrormsg(errorcode));
cprintf("Presione una tecla para finalizar:");
getch();
exit(1);
}
}
void PreparaCuadricula256col(void)
{
int x, y, color = 0;
for( y = 0; y < 16; y++ )
for( x = 0; x < 16; x++ )
{
setcolor(color);
setfillstyle( SOLID_FILL, color );
bar( 40*x, 30*y, 40+40*x+40, 30+30*y);
color++;
}
}