From 2c1bb55db744f80d1cdce172ced413bbf5e9eee5 Mon Sep 17 00:00:00 2001
From: Joshua Wise <joshua@laminarflow.(none)>
Date: Fri, 20 Jun 2008 15:13:58 -0400
Subject: [PATCH] initial import of xvmouse

---
 Makefile  |   2 +
 xvmouse.c | 158 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 160 insertions(+)
 create mode 100644 Makefile
 create mode 100644 xvmouse.c

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..965ee6a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+xvmouse: xvmouse.c
+	gcc -o xvmouse xvmouse.c -lm -lX11 /usr/lib/libXtst.so.6
diff --git a/xvmouse.c b/xvmouse.c
new file mode 100644
index 0000000..44e94d9
--- /dev/null
+++ b/xvmouse.c
@@ -0,0 +1,158 @@
+#include <X11/Xlib.h>
+#include <math.h>
+#include <X11/extensions/XTest.h>
+#include <stdio.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <time.h>
+
+#define STATUS_LEFT 0x01
+#define STATUS_RIGHT 0x02
+#define STATUS_UP 0x04
+#define STATUS_DOWN 0x08
+#define STATUS_MOVING 0xF
+#define STATUS_TAPJUMP 0x100
+#define STATUS_RUNNING 0x80000000
+
+#define MIN(a,b) ({int __a = (a), __b = (b); (__a < __b) ? __a : __b; })
+#define MAX(a,b) ({int __a = (a), __b = (b); (__a > __b) ? __a : __b; })
+
+unsigned long long now()
+{
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	return tv.tv_sec*1000000 + tv.tv_usec;
+}
+
+void main()
+{
+	int e;
+	XEvent ev;
+	Display *dpy;
+	int status = 0, dmy;
+	char key = 0, lastkey = 0;
+	unsigned long long lasttime = 0;
+	int repeats = 1;
+	int starttime = 0;
+	
+	dpy = XOpenDisplay(NULL);
+	if (!dpy)
+	{
+		printf("Display open failed; bailing out\n");
+		exit(1);
+	}
+	
+	if (!XTestQueryExtension(dpy, &dmy, &dmy, &dmy, &dmy))
+	{
+		printf("XTest NOT supported\n");
+		exit(1);
+	}
+	
+	printf("Grabbing keyboard...\n");
+	XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), Mod1Mask, RootWindow(dpy, DefaultScreen(dpy)), True, GrabModeAsync, GrabModeAsync);
+	
+	while (1)
+	{
+		while (XCheckMaskEvent(dpy, 0xFFFFFFFF, &ev))
+		{
+			switch (ev.type)
+			{
+			case KeyPress:
+			case KeyRelease:
+			{
+				XKeyEvent *ke = (XKeyEvent*)&ev;
+				char *keystr = XKeysymToString(XKeycodeToKeysym(dpy, ke->keycode, 0));
+				//printf("Key %s: %s\n", ev.type == KeyPress ? "PRESS  " : "RELEASE", keystr);
+				
+				if (!strcmp(keystr, "grave")) {
+					if (ev.type == KeyPress)
+					{
+						XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), AnyModifier, RootWindow(dpy, DefaultScreen(dpy)), True, GrabModeAsync, GrabModeAsync);
+						XAutoRepeatOff(dpy);
+						status |= STATUS_RUNNING;
+					} else {
+						XUngrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), AnyModifier, RootWindow(dpy, DefaultScreen(dpy)));
+						XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("grave")), Mod1Mask, RootWindow(dpy, DefaultScreen(dpy)), True, GrabModeAsync, GrabModeAsync);
+						XAutoRepeatOn(dpy);
+						status &= ~STATUS_RUNNING;
+					}
+				} else if (!strcmp(keystr, "u")) 
+					XTestFakeButtonEvent(dpy, 1, ev.type == KeyPress, 0);
+				else if (!strcmp(keystr, "o"))
+					XTestFakeButtonEvent(dpy, 3, ev.type == KeyPress, 0);
+				else if (!strcmp(keystr, "apostrophe") || !strcmp(keystr, "semicolon")) {
+					if (ev.type == KeyPress)
+						status |= STATUS_TAPJUMP;
+					else
+						status &= ~STATUS_TAPJUMP;
+					repeats = 1;
+				} else if (!strcmp(keystr, "j")) {
+					if (ev.type == KeyPress)
+					{
+						status |= STATUS_LEFT;
+						if ((lastkey == 'j') && ((now() - lasttime) < 250000) && (status & STATUS_TAPJUMP))
+							XTestFakeRelativeMotionEvent(dpy, -100.0 * pow(repeats++, 0.8), 0, 0);
+					} else
+						status &= ~STATUS_LEFT;
+				} else if (!strcmp(keystr, "l")) {
+					if (ev.type == KeyPress)
+					{
+						status |= STATUS_RIGHT;
+						if ((lastkey == 'l') && ((now() - lasttime) < 250000) && (status & STATUS_TAPJUMP))
+							XTestFakeRelativeMotionEvent(dpy, 100.0 * pow(repeats++, 0.8), 0, 0);
+					} else
+						status &= ~STATUS_RIGHT;
+				} else if (!strcmp(keystr, "i")) {
+					if (ev.type == KeyPress)
+					{
+						status |= STATUS_UP;
+						if ((lastkey == 'i') && ((now() - lasttime) < 250000) && (status & STATUS_TAPJUMP))
+							XTestFakeRelativeMotionEvent(dpy, 0, -100.0 * pow(repeats++, 0.8), 0);
+					} else
+						status &= ~STATUS_UP;
+				} else if (!strcmp(keystr, "k")) {
+					if (ev.type == KeyPress)
+					{
+						status |= STATUS_DOWN;
+						if (lastkey == 'k' && (now() - lasttime) < 250000 && (status & STATUS_TAPJUMP))
+							XTestFakeRelativeMotionEvent(dpy, 0, 100.0 * pow(repeats++, 0.8), 0);
+					} else
+						status &= ~STATUS_DOWN;
+				}
+				if (strlen(keystr) == 1 && ev.type == KeyPress)
+				{
+					lastkey = keystr[0];
+					lasttime = now();
+				} else if (ev.type == KeyPress) {
+					lastkey = 0;
+					repeats = 0;
+				}
+				break;
+			}
+			default:
+				printf("NFI what %d is\n", ev.type);
+			}
+		}
+		if (!(status & STATUS_RUNNING))
+			status = 0;
+		if (!(status & STATUS_MOVING))	// if we haven't anything to do, don't sit and suck up cycles
+		{
+			XPeekEvent(dpy, &ev);
+			starttime = now();
+		}
+		usleep(20000 - MIN(MAX(pow(13 * (now() - starttime), 0.6), 0), 18000));
+		if (now() - lasttime > 250000)
+			repeats = 1;
+		if (status & STATUS_LEFT)
+			XTestFakeRelativeMotionEvent(dpy, -2, 0, 0);
+		if (status & STATUS_RIGHT)
+			XTestFakeRelativeMotionEvent(dpy, 2, 0, 0);
+		if (status & STATUS_UP)
+			XTestFakeRelativeMotionEvent(dpy, 0, -2, 0);
+		if (status & STATUS_DOWN)
+			XTestFakeRelativeMotionEvent(dpy, 0, 2, 0);
+	}
+	
+	
+	exit(0);
+}
\ No newline at end of file
-- 
2.39.2