ref: 7420dc6adab03f28020243d71a3372cda15cacbc
dir: /sys/src/9/bitsy/mouse.c/
#include "u.h" #include "../port/lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "../port/error.h" #include "io.h" #define Image IMAGE #include <draw.h> #include <memdraw.h> #include <cursor.h> #include "screen.h" enum { Button1 = 0x1; Button2 = 0x2; Button3 = 0x4; }; int buttons; Point position; static void mousevent(void) { static int curbuttons; static Point curposition; if (buttons == curbuttons && eqpt(position, curposition)) return; /* generate a mouse event */ curbuttons = buttons; curposition = position; } void buttonevent(int event) { switch (event) { case 0x02: /* Button 2 down */ buttons |= Button2; mousevent(); break; case 0x82: /* Button 2 up */ buttons &= ~Button2; mousevent(); break; case 0x03: /* Button 3 down */ buttons |= Button3; mousevent(); break; case 0x83: /* Button 3 up */ buttons &= ~Button3; mousevent(); break; default: /* other buttons */ } }