Made it possible to disable the touchpad at runtime. (Patch

from "J�rg B�sner" <ich@joerg-boesner.de>.)

COMPATIBILITY

@@ -10,6 +10,7 @@ Aopen Openbook 1545/1545D
 ASUS A1000
 ASUS L2400D
 ASUS L3500D
+ASUS L3500H
 ASUS L3800C
 ASUS L8400 series
 ASUS M2400E

FEATURES

@@ -21,3 +21,4 @@ taps for example):
 - Multifinger taps: two finger for middle button and three finger for
   right button events
 - Online configuration through shared memory (Option: SHMConfig)
+- Touchpad can be switched off temporarily

FILES

@@ -5,3 +5,5 @@ synaptics.c                       Synaptics driver-module for xfree
 synaptics.h                       see above
 synclient.c                       Program for testing the shared-memory
                                    shows the x, y-coordinates of the finger
+script/usbmouse                   script for shutting the touchpad down if
+                                  an external USB-mouse is attached

PARAMETER

@@ -21,3 +21,5 @@ UpDownScrolling		Bool	If on, the up/down buttons generate button 4/5 events.
 				If off, the up button generates a double click and
 				the down button generates a button 2 event.
 EmulateMidButtonTime	Int	max time (in milliseconds) for middle button emulation.
+TouchpadOff		Bool	If on, the Touchpad is switched off (useful
+				if an external mouse is connected)

script/usbmouse

@@ -0,0 +1,19 @@
+#!/bin/bash
+while true
+do
+    if [ -e ~/.touchpad.on ]; then 
+        synclient TouchpadOff=0
+    else
+        if [ -e ~/.touchpad.off ]; then 
+            synclient TouchpadOff=1
+        else
+            if [ "`grep -e Mouse /proc/bus/usb/devices`" ]; then
+                synclient TouchpadOff=1
+            else
+                synclient TouchpadOff=0
+            fi
+        fi
+    fi  
+    sleep 3
+done
+

synaptics.c

@@ -1,4 +1,8 @@
 /*
+ *   2003 Jörg Bösner <ich@joerg-boesner.de>
+ *     patch for switching the touchpad off (for example, when a
+ *     USB mouse is connected)
+ *
  *   2003 Hartwig Felger <hgfelger@hgfelger.de>
  *     patch to make the horizontal-wheel-replacement-buttons work.
  *
@@ -389,6 +393,7 @@ SynapticsPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
     priv->synpara->edge_motion_speed = xf86SetIntOption(local->options, "EdgeMotionSpeed", 40);
     priv->synpara->repeater = xf86SetStrOption(local->options, "Repeater", NULL);
     priv->synpara->updown_button_scrolling = xf86SetBoolOption(local->options, "UpDownScrolling", TRUE);
+    priv->synpara->touchpad_off = xf86SetBoolOption(local->options, "TouchpadOff", FALSE);
 
     str_par = xf86FindOptionValue(local->options, "MinSpeed");
     if((!str_par) || (xf86sscanf(str_par, "%lf", &priv->synpara->min_speed) != 1))
@@ -844,6 +849,10 @@ HandleState(LocalDevicePtr local, struct SynapticsHwState* hw)
     long delay = 1000000000;
     long timeleft;
 
+    /* If touchpad is switched off, we skip the whole thing and return delay */
+    if (para->touchpad_off == TRUE)
+	return delay;
+
     edge = edge_detection(priv, hw->x, hw->y);
 
     dx = dy = 0;

synaptics.h

@@ -36,6 +36,7 @@ typedef struct _SynapticsSHM
     int edge_motion_speed;		    /* Edge motion speed when dragging */
     char* repeater;			    /* Repeater on or off */
     Bool updown_button_scrolling;	    /* Up/Down-Button scrolling or middle/double-click */
+    Bool touchpad_off;			    /* Switches the Touchpad off*/
 } SynapticsSHM, *SynapticsSHMPtr;
 
 #ifdef SYNAPTICS_PRIVATE

synclient.c

@@ -61,6 +61,7 @@ static struct Parameter params[] = {
     DEFINE_PAR("AccelFactor",          accl,                    PT_DOUBLE, 0, 0.2),
     DEFINE_PAR("EdgeMotionSpeed",      edge_motion_speed,       PT_INT,    0, 400),
     DEFINE_PAR("UpDownScrolling",      updown_button_scrolling, PT_BOOL,   0, 1),
+    DEFINE_PAR("TouchpadOff",          touchpad_off,            PT_BOOL,   0, 1),
     { 0, 0, 0, 0, 0 }
 };