Added mouse_control.py to move the mouse pointer on the screen (Linux…

… only for now)

mouse_control.py

@@ -0,0 +1,67 @@
+#!/usr/bin/python
+
+import sys, time, logging
+from ctypes import cdll
+
+from emotiv import Emotiv
+
+class Xlib:
+    def __init__(self):
+        self.xlib = cdll.LoadLibrary('libX11.so')
+
+        display = self.xlib.XOpenDisplay(None)
+        dflt_screen_num = self.xlib.XDefaultScreen(display)
+        default_screen = self.xlib.XScreenOfDisplay(display, dflt_screen_num)
+
+        self.width = self.xlib.XWidthOfScreen(default_screen)
+        self.height = self.xlib.XHeightOfScreen(default_screen)
+        logger.info("Default screen: %d x %d" % (self.width, self.height))
+        self.xlib.XCloseDisplay(display)
+
+    def move_mouse(self, x,y):
+        display = self.xlib.XOpenDisplay(None)
+        root = self.xlib.XDefaultRootWindow(display)
+        self.xlib.XWarpPointer(display,None,root,0,0,0,0,x,y)
+        self.xlib.XCloseDisplay(display)
+
+def main(debug=False):
+
+	screen = Xlib()
+
+	width = screen.width
+	height = screen.height
+
+	curX, curY = width/2, height/2
+	while True:
+		updated = False
+		for packet in emotiv.dequeue():
+			updated = True
+			if abs(packet.gyroX) > 1:
+				curX -= packet.gyroX - 1
+			if abs(packet.gyroY) > 1:
+				curY += packet.gyroY
+			curX = max(0, min(curX, width))
+			curY = max(0, min(curY, height))
+
+		if updated:
+			screen.move_mouse(curX, curY)
+		time.sleep(1.0/60)
+
+
+emotiv = None
+
+try:
+	logger = logging.getLogger('emotiv')
+	logger.setLevel(logging.INFO)
+	log_handler = logging.StreamHandler()
+	logger.addHandler(log_handler)
+
+	emotiv = Emotiv()
+
+
+	main(*sys.argv[1:])
+
+finally:
+	if emotiv:
+		emotiv.close()
+