feat: gnome wacom configuration

README.md

@@ -54,3 +54,8 @@ remouse --key ~/.ssh/remarkable
       --threshold THRESH    stylus pressure threshold (default 600)
       --evdev               use evdev to support pen pressure (requires root,
                             Linux only)
+
+# Integration
+
+To get gnome control center to treat remarkable-mouse as a wacom tablet, copy [remarkable.tablet](./remarkable.tablet) into `/usr/share/libwacom/`
+Once copied, `libwacom-list-local-devices` should show `'reMarkable tablet 1'` whenever `remarkable-mouse` is running using the `--evdev` option. `gnome-control-center` (aka gnome settings) will show remarkable in `Devices > Wacom Tablet` and allow you to easily map to a monitor, change the rotation, etc.

remarkable.tablet

@@ -0,0 +1,29 @@
+# reMarkable 
+#
+# Button Map: TODO
+#
+# Default button assignments: TODO
+#
+# stylus with two buttons and no eraser
+# Pen active area: 8.25 x 6.125 in
+
+[Device]
+Name=reMarkable tablet 1
+DeviceMatch=usb:056a:0004
+Class=Bamboo
+Width=6
+Height=8
+IntegratedIn=
+#Layout=
+Styli= #FIXME
+
+[Features]
+Stylus=true
+Reversible=true
+Touch=false # will update when we fix this
+Buttons=3
+Ring=false
+
+[Buttons]
+Top=A;B;C
+EvdevCodes=0x110;0x112;0x111 # might need tweaking

remarkable_mouse/evdev.py

@@ -25,14 +25,22 @@ def create_local_device():
     import libevdev
     device = libevdev.Device()
 
-    # Set device properties to emulate those of Wacom tablets
-    device.name = 'reMarkable tablet'
+    # Set device properties to emulate those of Wacom tablet.
+    # "pen" or "wacom" must be in the name or gdk will treat us as a TOUCHSCREEN device
+    # rather than a PEN device.
+    #
+    # Then "Mutter", which is responsible for doing the input mapping will silently
+    # refuse to map our device when requested in gnome-control-center
+    #
+    # (see https://gitlab.gnome.org/GNOME/gtk/blob/master/gdk/x11/gdkdevicemanager-xi2.c)
+    # (See https://gitlab.gnome.org/GNOME/mutter/-/blob/master/src/backends/meta-input-settings.c)
+    device.name = 'reMarkable pen' # keep "pen" !
 
     device.id = {
-        'bustype': 0x18, # i2c
-        'vendor': 0x056a, # wacom
-        'product': 0,
-        'version': 54
+        'bustype': 0x03,   # usb though this is pretend and only for matching
+        'vendor':  0x056a, # wacom since input systems will look for this and match x driver
+        'product': 0x04,   # no collision https://www.the-sz.com/products/usbid/index.php?v=0x056A
+        'version': 0       # I don't think this matters
     }
 
     # Enable buttons supported by the digitizer