tools: make the thumb threshold configurable while measuring pressure

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

tools/libinput-measure-touchpad-pressure.man

@@ -53,6 +53,11 @@ device-specific pressure values and it is required that
 Assume a palm threshold of
 .I N.
 The threshold has to be in device-specific pressure values.
+.TP 8
+.B \-\-thumb\-threshold=\fIN\fR
+Assume a thumb threshold of
+.I N.
+The threshold has to be in device-specific pressure values.
 .PP
 If the touch-thresholds or the palm-threshold are not provided,
 this tool uses the thresholds provided by the device quirks (if any) or the

tools/libinput-measure-touchpad-pressure.py

@@ -346,6 +346,10 @@ def main(args):
         '--palm-threshold', metavar='t', type=int,
         help='Threshold when a touch is a palm'
     )
+    parser.add_argument(
+        '--thumb-threshold', metavar='t', type=int,
+        help='Threshold when a touch is a thumb'
+    )
     args = parser.parse_args()
 
     try:
@@ -357,6 +361,9 @@ def main(args):
         if args.palm_threshold is not None:
             device.palm = args.palm_threshold
 
+        if args.thumb_threshold is not None:
+            device.thumb = args.thumb_threshold
+
         loop(device)
     except KeyboardInterrupt:
         print('\r\033[2K{}'.format(fmt.separator()))