xvmouse.c

   1 #include <X11/Xlib.h>
   2 #include <math.h>
   3 #include <X11/extensions/XTest.h>
   4 #include <stdio.h>
   5 #include <signal.h>
   6 #include <sys/time.h>
   7 #include <time.h>
   8
   9 #define STATUS_LEFT 0x01
  10 #define STATUS_RIGHT 0x02
  11 #define STATUS_UP 0x04
  12 #define STATUS_DOWN 0x08
  13 #define STATUS_MOVING 0xF
  14 #define STATUS_TAPJUMP 0x100
  15 #define STATUS_RUNNING 0x80000000
  16
  17 #define MIN(a,b) ({int __a = (a), __b = (b); (__a < __b) ? __a : __b; })
  18 #define MAX(a,b) ({int __a = (a), __b = (b); (__a > __b) ? __a : __b; })
  19
  20 unsigned long long now()
  21 {
  22         struct timeval tv;
  23         gettimeofday(&tv, NULL);
  24         return tv.tv_sec*1000000 + tv.tv_usec;
  25 }
  26
  27 int main()
  28 {
  29         int e;
  30         XEvent ev;
  31         Display *dpy;
  32         int status = 0, dmy;
  33         char key = 0, lastkey = 0;
  34         unsigned long long lasttime = 0;
  35         int repeats = 1;
  36         int starttime = 0;
  37
  38         dpy = XOpenDisplay(NULL);
  39         if (!dpy)
  40         {
  41                 printf("Display open failed; bailing out\n");
  42                 exit(1);
  43         }
  44
  45         if (!XTestQueryExtension(dpy, &dmy, &dmy, &dmy, &dmy))
  46         {
  47                 printf("XTest NOT supported\n");
  48                 exit(1);
  49         }
  50
  51         printf("Grabbing keyboard...\n");
  52         XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), Mod1Mask, RootWindow(dpy, DefaultScreen(dpy)), True, GrabModeAsync, GrabModeAsync);
  53
  54         while (1)
  55         {
  56                 while (XCheckMaskEvent(dpy, 0xFFFFFFFF, &ev))
  57                 {
  58                         switch (ev.type)
  59                         {
  60                         case KeyPress:
  61                         case KeyRelease:
  62                         {
  63                                 XKeyEvent *ke = (XKeyEvent*)&ev;
  64                                 char *keystr = XKeysymToString(XKeycodeToKeysym(dpy, ke->keycode, 0));
  65                                 //printf("Key %s: %s\n", ev.type == KeyPress ? "PRESS  " : "RELEASE", keystr);
  66
  67                                 if (!strcmp(keystr, "grave")) {
  68                                         if (ev.type == KeyPress)
  69                                         {
  70                                                 XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), AnyModifier, RootWindow(dpy, DefaultScreen(dpy)), True, GrabModeAsync, GrabModeAsync);
  71                                                 XAutoRepeatOff(dpy);
  72                                                 status |= STATUS_RUNNING;
  73                                         } else {
  74                                                 XUngrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), AnyModifier, RootWindow(dpy, DefaultScreen(dpy)));
  75                                                 XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), Mod1Mask, RootWindow(dpy, DefaultScreen(dpy)), True, GrabModeAsync, GrabModeAsync);
  76                                                 XAutoRepeatOn(dpy);
  77                                                 status &= ~STATUS_RUNNING;
  78                                         }
  79                                 } else if (!strcmp(keystr, "u"))
  80                                         XTestFakeButtonEvent(dpy, 1, ev.type == KeyPress, 0);
  81                                 else if (!strcmp(keystr, "o"))
  82                                         XTestFakeButtonEvent(dpy, 3, ev.type == KeyPress, 0);
  83                                 else if (!strcmp(keystr, "p"))
  84                                         XTestFakeButtonEvent(dpy, 2, ev.type == KeyPress, 0);
  85                                 else if (!strcmp(keystr, "apostrophe") || !strcmp(keystr, "semicolon")) {
  86                                         if (ev.type == KeyPress)
  87                                                 status |= STATUS_TAPJUMP;
  88                                         else
  89                                                 status &= ~STATUS_TAPJUMP;
  90                                         repeats = 1;
  91                                 } else if (!strcmp(keystr, "j")) {
  92                                         if (ev.type == KeyPress)
  93                                         {
  94                                                 status |= STATUS_LEFT;
  95                                                 if ((lastkey == 'j') && ((now() - lasttime) < 250000) && (status & STATUS_TAPJUMP))
  96                                                         XTestFakeRelativeMotionEvent(dpy, -100.0 * pow(repeats++, 0.8), 0, 0);
  97                                         } else
  98                                                 status &= ~STATUS_LEFT;
  99                                 } else if (!strcmp(keystr, "l")) {
 100                                         if (ev.type == KeyPress)
 101                                         {
 102                                                 status |= STATUS_RIGHT;
 103                                                 if ((lastkey == 'l') && ((now() - lasttime) < 250000) && (status & STATUS_TAPJUMP))
 104                                                         XTestFakeRelativeMotionEvent(dpy, 100.0 * pow(repeats++, 0.8), 0, 0);
 105                                         } else
 106                                                 status &= ~STATUS_RIGHT;
 107                                 } else if (!strcmp(keystr, "i")) {
 108                                         if (ev.type == KeyPress)
 109                                         {
 110                                                 status |= STATUS_UP;
 111                                                 if ((lastkey == 'i') && ((now() - lasttime) < 250000) && (status & STATUS_TAPJUMP))
 112                                                         XTestFakeRelativeMotionEvent(dpy, 0, -100.0 * pow(repeats++, 0.8), 0);
 113                                         } else
 114                                                 status &= ~STATUS_UP;
 115                                 } else if (!strcmp(keystr, "k")) {
 116                                         if (ev.type == KeyPress)
 117                                         {
 118                                                 status |= STATUS_DOWN;
 119                                                 if (lastkey == 'k' && (now() - lasttime) < 250000 && (status & STATUS_TAPJUMP))
 120                                                         XTestFakeRelativeMotionEvent(dpy, 0, 100.0 * pow(repeats++, 0.8), 0);
 121                                         } else
 122                                                 status &= ~STATUS_DOWN;
 123                                 }
 124                                 if (strlen(keystr) == 1 && ev.type == KeyPress)
 125                                 {
 126                                         lastkey = keystr[0];
 127                                         lasttime = now();
 128                                 } else if (ev.type == KeyPress) {
 129                                         lastkey = 0;
 130                                         repeats = 0;
 131                                 }
 132                                 break;
 133                         }
 134                         default:
 135                                 printf("NFI what %d is\n", ev.type);
 136                         }
 137                 }
 138                 if (!(status & STATUS_RUNNING))
 139                         status = 0;
 140                 if (!(status & STATUS_MOVING))  // if we haven't anything to do, don't sit and suck up cycles
 141                 {
 142                         XPeekEvent(dpy, &ev);
 143                         starttime = now();
 144                 }
 145                 usleep(20000 - MIN(MAX(pow(13 * (now() - starttime), 0.6), 0), 18000));
 146                 if (now() - lasttime > 250000)
 147                         repeats = 1;
 148                 if (status & STATUS_LEFT)
 149                         XTestFakeRelativeMotionEvent(dpy, -2, 0, 0);
 150                 if (status & STATUS_RIGHT)
 151                         XTestFakeRelativeMotionEvent(dpy, 2, 0, 0);
 152                 if (status & STATUS_UP)
 153                         XTestFakeRelativeMotionEvent(dpy, 0, -2, 0);
 154                 if (status & STATUS_DOWN)
 155                         XTestFakeRelativeMotionEvent(dpy, 0, 2, 0);
 156         }
 157
 158         exit(0);
 159 }