feat: ensemble de fonctions permettant la gestion de la souris

lib/mouse.c

@@ -0,0 +1,135 @@
+#include "types.h"
+#include "asm.h"
+#include "mouse.h"
+#include "keyboard.h"
+#include "vga.h"
+#include "video.h"
+
+bool initmouse()
+{
+u16 i=1024;
+
+outkbd(0x64,0xA8);         /* autorisé Aux */
+
+outmseack(0xf3);         /*sample*/ 
+outmseack(100);          /*sample donnée*/ 
+
+outmseack(0xe8);         /*resolution*/ 
+outmseack(3);           /*resolution donnée*/ 
+
+outmseack(0xe7);         /* echelle 2:1*/ 
+
+outmseack(0xf4);         /* Autorise peripherique */ 
+
+outmsecmd(0x47);         /* Autorise interruption */ 
+
+while(i-->0) if (inb(0x60)==250) return 1;
+return 0;
+}
+
+static  u8  bytepos=0,mousereplies=0;
+static  u8  mpacket[3];
+static  s32 mousex=40, mousey=12;
+static  u16 oldx=0, oldy=0;
+static  u8  oldchar=0x00,oldattr=0x07;
+static  bool mousebut1=0,mousebut2=0,mousebut3=0;
+static  u8  speed=6;
+
+
+void outmseack(u8 value)
+{
+outkbd(0x64,0xD4);         /* ecriture vers souris */
+outb(0x60,value);
+mousereplies++;
+}
+
+void outmsecmd(u8 command)
+{
+outkbd(0x64,0x60);         /* ecriture vers mode */
+outb(0x60,command);
+}
+
+void mouse()
+{
+u8 mbyte=inb(0x60);
+s8 changex,changey;
+cli();
+
+  if (mousereplies > 0) 
+  {
+    if (mbyte == 0xFA) 
+    {
+      mousereplies--;
+      goto endofint;
+    }
+    mousereplies = 0;
+  }
+
+        mpacket[bytepos]=mbyte;
+        bytepos++;
+        
+if(bytepos==3) {     
+bytepos=0;
+if ( mpacket[1] == 0)
+    {
+      changex = 0;
+    }
+    else
+    {
+      changex = (mpacket[0] & 0x10) ?
+        mpacket[1] - 256 :
+        mpacket[1];
+    }
+    if (mpacket[2] == 0)
+    {
+      changey = 0;
+    }
+    else
+    {
+      changey = -((mpacket[0] & 0x20) ?
+                    mpacket[2] - 256 :
+                    mpacket[2]);
+    }
+
+    mousex+= (changex<<speed);
+    mousey+= (changey<<speed);    
+    
+    if(mousex<0) { mousex=0; }
+    if(mousex>=65535) { mousex=65535; }
+    if(mousey<0) { mousey=0; }
+    if(mousey>=65535) { mousey=65535; }
+       
+   u16 newx=(u32)mousex*getxres()/65536;
+   u16 newy=(u32)mousey*getyres()/65536;         
+
+    // Retrieve mouse button status from packet
+    mousebut1=mpacket[0] & 1;
+    mousebut2=mpacket[0] & 2;
+    mousebut3=mpacket[0] & 4;
+    
+// printf("RX:%d\tRY:%d\tX:%d\tY:%d\tB1:%d\tB2:%d\tB3:%d\t\r\n",changex,changey,mousex,mousey,mousebut1,mousebut2,mousebut3);
+
+if ((newx!=oldx)||(newy!=oldy))
+{
+ showchar(oldx,oldy,oldchar,oldattr); 
+ oldx=newx;
+ oldy=newy; 
+ oldchar=getchar(oldx,oldy);
+ oldattr=getattrib(oldx,oldy);
+ showchar(newx,newy,0xDB,0x0F);
+}
+}
+endofint:
+irqendmaster();
+irqendslave();
+sti();
+//asm("movl 0x2C(%esp), %ebx;movl 0x30(%esp), %esi;movl 0x34(%esp), %edi;movl 0x38(%esp), %ebp;addl  $0x3C, %esp;iret;");
+asm("addl  $0x18, %esp;popl %ebx;iret;");
+}
+
+
+
+
+
+
+