properly reads keycode device for devices that are being injected into

keymapper/config.py

@@ -35,8 +35,7 @@ CONFIG_PATH = os.path.join(CONFIG, 'config')
 
 # an empty config with basic expected substructures
 INITIAL_CONFIG = {
-    'autoload': {},
-    'map_EV_REL_devices': True
+    'autoload': {}
 }
 
 
@@ -53,25 +52,6 @@ class _Config:
         """get tuples of (device, preset)."""
         return self._config['autoload'].items()
 
-    def set_modify_movement_devices(self, active):
-        """Set if devices that control movements should also be mapped.
-
-        This causes many movements event to be passed through python code,
-        and if this ever seems to affect the responsiveness of mouse movements,
-        it can be disabled. This is just an optional precaution. Disabling this
-        may make mapping some keys of the device impossible.
-        """
-        self._config['map_EV_REL_devices'] = active
-
-    def may_modify_movement_devices(self):
-        """Get if devices that control movements may be modified as well.
-
-        Since movement events happen quite often and fast, I'd like to
-        add the option to disabling mapping those if it affects their
-        performance. TODO figure out which devices to inject to instead?
-        """
-        return self._config['map_EV_REL_devices']
-
     def load_config(self):
         """Load the config from the file system."""
         if not os.path.exists(CONFIG_PATH):

keymapper/getdevices.py

@@ -64,24 +64,16 @@ class _GetDevicesProcess(multiprocessing.Process):
         # "Logitech USB Keyboard" and "Logitech USB Keyboard Consumer Control"
         grouped = {}
         for device in devices:
+            if device.phys.startswith('key-mapper'):
+                # injector device, not really periphery
+                continue
+
             # only keyboard devices
             # https://www.kernel.org/doc/html/latest/input/event-codes.html
             capabilities = device.capabilities().keys()
             if evdev.ecodes.EV_KEY not in capabilities:
                 continue
 
-            if (
-                not config.may_modify_movement_devices()
-                and evdev.ecodes.EV_REL in capabilities
-            ):
-                # TODO add checkbox to automatically load
-                #  a preset on login
-                logger.debug(
-                    'Skipping %s to avoid impairing mouse movement',
-                    device.path
-                )
-                continue
-
             usb = device.phys.split('/')[0]
             if grouped.get(usb) is None:
                 grouped[usb] = []
@@ -117,7 +109,7 @@ def refresh_devices():
     return get_devices()
 
 
-def get_devices(include_keymapper=False):
+def get_devices():
     """Group devices and get relevant infos per group.
 
     Returns a list containing mappings of
@@ -128,6 +120,10 @@ def get_devices(include_keymapper=False):
     paths is a list of files in /dev/input that belong to the devices.
 
     They are grouped by usb port.
+
+    Since this needs to do some stuff with /dev and spawn processes the
+    result is cached. Use refresh_devices if you need up to date
+    devices.
     """
     global _devices
     if _devices is None:
@@ -141,13 +137,4 @@ def get_devices(include_keymapper=False):
             names = [f'"{name}"' for name in _devices]
             logger.info('Found %s', ', '.join(names))
 
-    # filter the result
-    result = {}
-    for device in _devices.keys():
-        if include_keymapper and device.startswith('key-mapper'):
-            result[device] = _devices[device]
-            continue
-
-        result[device] = _devices[device]
-
-    return result
+    return _devices

keymapper/gtk/window.py

@@ -226,6 +226,9 @@ class Window:
             CTX_APPLY,
             f'Applied the system default'
         )
+        # restart reading because after injecting the device landscape
+        # changes a bit
+        keycode_reader.start_reading(self.selected_device)
 
     def on_save_preset_clicked(self, button):
         """Save changes to a preset to the file system."""
@@ -281,6 +284,10 @@ class Window:
                 f'Could not grab device "{self.selected_device}"'
             )
 
+        # restart reading because after injecting the device landscape
+        # changes a bit
+        keycode_reader.start_reading(self.selected_device)
+
     def on_select_device(self, dropdown):
         """List all presets, create one if none exist yet."""
         if dropdown.get_active_id() == self.selected_device:

keymapper/injector.py

@@ -264,9 +264,6 @@ class KeycodeInjector:
         if len(self.processes) == 0:
             raise OSError('Could not grab any device')
 
-        # key-mapper devices were added, freshly scan /dev/input
-        refresh_devices()
-
     @ensure_numlock
     def stop_injecting(self):
         """Stop injecting keycodes."""
@@ -278,5 +275,3 @@ class KeycodeInjector:
             if process.is_alive():
                 process.terminate()
                 self.processes[i] = None
-
-        refresh_devices()

keymapper/reader.py

@@ -25,7 +25,7 @@
 import evdev
 
 from keymapper.logger import logger
-from keymapper.getdevices import get_devices
+from keymapper.getdevices import get_devices, refresh_devices
 
 
 class _KeycodeReader:
@@ -50,25 +50,22 @@ class _KeycodeReader:
 
         If read is called without prior start_reading, no keycodes
         will be available.
-
-        Parameters
-        ----------
-        device : string
-            The name of the device.
         """
-        groups = get_devices(include_keymapper=True)
-        for name, group in groups.items():
+        # make sure this sees up to date devices
+        refresh_devices()
+
+        self.virtual_devices = []
+
+        for name, group in get_devices().items():
             # also find stuff like "key-mapper {device}"
             if device not in name:
-                return
-
-            paths = group['paths']
+                continue
 
             # Watch over each one of the potentially multiple devices per
             # hardware
-            self.virtual_devices = [
+            self.virtual_devices += [
                 evdev.InputDevice(path)
-                for path in paths
+                for path in group['paths']
             ]
 
             logger.debug(

tests/test.py

@@ -48,7 +48,7 @@ fixtures = {
         'name': 'device 1 foo'
     },
     '/dev/input/event10': {
-        'capabilities': {evdev.ecodes.EV_KEY: []},
+        'capabilities': {evdev.ecodes.EV_KEY: list(evdev.ecodes.keys.keys())},
         'phys': 'usb-0000:03:00.0-1/input3',
         'name': 'device 1'
     },
@@ -65,7 +65,7 @@ fixtures = {
 
     # device 2
     '/dev/input/event20': {
-        'capabilities': {evdev.ecodes.EV_KEY: []},
+        'capabilities': {evdev.ecodes.EV_KEY: list(evdev.ecodes.keys.keys())},
         'phys': 'usb-0000:03:00.0-2/input1',
         'name': 'device 2'
     },
@@ -77,10 +77,10 @@ fixtures = {
         'name': 'device 3'
     },
 
-    # key-mapper devices are also ignored, another instance of key-mapper
+    # key-mapper devices are also ignored, some instance of key-mapper
     # started injecting apparently.
     '/dev/input/event40': {
-        'capabilities': {evdev.ecodes.EV_KEY: []},
+        'capabilities': {evdev.ecodes.EV_KEY: list(evdev.ecodes.keys.keys())},
         'phys': 'key-mapper/input1',
         'name': 'key-mapper device 2'
     },
@@ -170,6 +170,7 @@ def patch_evdev():
     class UInput:
         def __init__(self, *args, **kwargs):
             self.fd = 0
+            self.device = InputDevice('/dev/input/event40')
             pass
 
         def write(self, type, code, value):

tests/testcases/config.py

@@ -48,11 +48,9 @@ class TestConfig(unittest.TestCase):
     def test_save_load(self):
         config.set_autoload_preset('d1', 'a')
         config.set_autoload_preset('d2', 'b')
-        config.set_modify_movement_devices(True)
         config.save_config()
 
         # ignored after load
-        config.set_modify_movement_devices(False)
         config.set_autoload_preset('d3', 'c')
 
         config.load_config()
@@ -60,7 +58,6 @@ class TestConfig(unittest.TestCase):
             list(config.iterate_autoload_presets()),
             [('d1', 'a'), ('d2', 'b')]
         )
-        self.assertTrue(config.may_modify_movement_devices())
 
 
 if __name__ == "__main__":

tests/testcases/getdevices.py

@@ -22,7 +22,6 @@
 import unittest
 
 from keymapper.getdevices import _GetDevicesProcess
-from keymapper.config import config
 
 
 class FakePipe:
@@ -57,29 +56,6 @@ class TestGetDevices(unittest.TestCase):
             }
         })
 
-    def test_map_movement_devices(self):
-        pipe = FakePipe()
-        config.set_modify_movement_devices(False)
-        _GetDevicesProcess(pipe).run()
-        self.assertDictEqual(pipe.devices, {
-            'device 1': {
-                'paths': [
-                    '/dev/input/event11',
-                    '/dev/input/event10',
-                    '/dev/input/event13'
-                ],
-                'devices': [
-                    'device 1 foo',
-                    'device 1',
-                    'device 1'
-                ]
-            },
-            'device 2': {
-                'paths': ['/dev/input/event20'],
-                'devices': ['device 2']
-            }
-        })
-
 
 if __name__ == "__main__":
     unittest.main()