evan
5 years ago
4 changed files with 238 additions and 217 deletions
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|
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import logging |
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import struct |
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|
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logging.basicConfig(format='%(message)s') |
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log = logging.getLogger(__name__) |
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|
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# Maximum value that can be reported by the Wacom driver for the X axis |
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MAX_ABS_X = 20967 |
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# Maximum value that can be reported by the Wacom driver for the Y axis |
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MAX_ABS_Y = 15725 |
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def create_local_device(): |
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""" |
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Create a virtual input device on this host that has the same |
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characteristics as a Wacom tablet. |
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Returns: |
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virtual input device |
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""" |
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import libevdev |
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device = libevdev.Device() |
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# Set device properties to emulate those of Wacom tablets |
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device.name = 'reMarkable tablet' |
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device.id = { |
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'bustype': 24, |
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'vendor': 1386, |
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'product': 0, |
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'version': 54 |
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} |
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# Enable buttons supported by the digitizer |
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device.enable(libevdev.EV_KEY.BTN_TOOL_PEN) |
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device.enable(libevdev.EV_KEY.BTN_TOOL_RUBBER) |
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device.enable(libevdev.EV_KEY.BTN_TOUCH) |
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device.enable(libevdev.EV_KEY.BTN_STYLUS) |
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device.enable(libevdev.EV_KEY.BTN_STYLUS2) |
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# Enable position, tilt, distance and pressure change events |
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device.enable( |
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libevdev.EV_ABS.ABS_X, |
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libevdev.InputAbsInfo( |
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minimum=0, |
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maximum=MAX_ABS_X |
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) |
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) |
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device.enable( |
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libevdev.EV_ABS.ABS_Y, |
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libevdev.InputAbsInfo( |
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minimum=0, |
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maximum=MAX_ABS_Y |
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) |
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) |
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device.enable( |
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libevdev.EV_ABS.ABS_PRESSURE, |
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libevdev.InputAbsInfo( |
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minimum=0, |
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maximum=4095 |
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) |
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) |
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device.enable( |
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libevdev.EV_ABS.ABS_DISTANCE, |
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libevdev.InputAbsInfo( |
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minimum=0, |
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maximum=255 |
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) |
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) |
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device.enable( |
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libevdev.EV_ABS.ABS_TILT_X, |
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libevdev.InputAbsInfo( |
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minimum=-9000, |
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maximum=9000 |
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) |
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) |
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device.enable( |
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libevdev.EV_ABS.ABS_TILT_Y, |
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libevdev.InputAbsInfo( |
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minimum=-9000, |
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maximum=9000 |
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) |
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) |
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return device.create_uinput_device() |
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def pipe_device(args, remote_device, local_device): |
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""" |
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Pipe events from a remote device to a local device. |
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Args: |
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args: argparse arguments |
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remote_device (paramiko.ChannelFile): read-only stream of input events |
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local_device: local virtual input device to write events to |
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""" |
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import libevdev |
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# While debug mode is active, we log events grouped together between |
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# SYN_REPORT events. Pending events for the next log are stored here |
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pending_events = [] |
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while True: |
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e_time, e_millis, e_type, e_code, e_value = struct.unpack('2IHHi', remote_device.read(16)) |
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e_bit = libevdev.evbit(e_type, e_code) |
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event = libevdev.InputEvent(e_bit, value=e_value) |
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local_device.send_events([event]) |
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if args.debug: |
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if e_bit == libevdev.EV_SYN.SYN_REPORT: |
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event_repr = ', '.join( |
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'{} = {}'.format( |
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event.code.name, |
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event.value |
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) for event in pending_events |
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) |
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log.debug('{}.{:0>6} - {}'.format(e_time, e_millis, event_repr)) |
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pending_events = [] |
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else: |
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pending_events += [event] |
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@ -0,0 +1,101 @@
@@ -0,0 +1,101 @@
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import logging |
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import struct |
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logging.basicConfig(format='%(message)s') |
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log = logging.getLogger(__name__) |
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# evtype_sync = 0 |
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# evtype_key = 1 |
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e_type_abs = 3 |
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# evcode_stylus_distance = 25 |
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# evcode_stylus_xtilt = 26 |
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# evcode_stylus_ytilt = 27 |
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e_code_stylus_xpos = 1 |
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e_code_stylus_ypos = 0 |
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e_code_stylus_pressure = 24 |
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# evcode_finger_xpos = 53 |
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# evcode_finger_ypos = 54 |
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# evcode_finger_pressure = 58 |
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stylus_width = 15725 |
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stylus_height = 20951 |
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# finger_width = 767 |
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# finger_height = 1023 |
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# remap wacom coordinates in various orientations |
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def fit(x, y, stylus_width, stylus_height, monitor, orientation): |
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if orientation == 'vertical': |
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y = stylus_height - y |
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elif orientation == 'right': |
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x, y = y, x |
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stylus_width, stylus_height = stylus_height, stylus_width |
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elif orientation == 'left': |
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x, y = stylus_height - y, stylus_width - x |
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stylus_width, stylus_height = stylus_height, stylus_width |
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ratio_width, ratio_height = monitor.width / stylus_width, monitor.height / stylus_height |
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scaling = ratio_width if ratio_width > ratio_height else ratio_height |
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return ( |
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scaling * (x - (stylus_width - monitor.width / scaling) / 2), |
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scaling * (y - (stylus_height - monitor.height / scaling) / 2) |
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) |
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def read_tablet(args, remote_device): |
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"""Loop forever and map evdev events to mouse""" |
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from screeninfo import get_monitors |
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from pynput.mouse import Button, Controller |
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lifted = True |
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new_x = new_y = False |
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mouse = Controller() |
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monitor = get_monitors()[args.monitor] |
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log.debug('Chose monitor: {}'.format(monitor)) |
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while True: |
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_, _, e_type, e_code, e_value = struct.unpack('2IHHi', remote_device.read(16)) |
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if e_type == e_type_abs: |
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# handle x direction |
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if e_code == e_code_stylus_xpos: |
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log.debug(e_value) |
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x = e_value |
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new_x = True |
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# handle y direction |
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if e_code == e_code_stylus_ypos: |
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log.debug('\t{}'.format(e_value)) |
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y = e_value |
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new_y = True |
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# handle draw |
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if e_code == e_code_stylus_pressure: |
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log.debug('\t\t{}'.format(e_value)) |
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if e_value > args.threshold: |
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if lifted: |
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log.debug('PRESS') |
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lifted = False |
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mouse.press(Button.left) |
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else: |
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if not lifted: |
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log.debug('RELEASE') |
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lifted = True |
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mouse.release(Button.left) |
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# only move when x and y are updated for smoother mouse |
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if new_x and new_y: |
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mapped_x, mapped_y = fit(x, y, stylus_width, stylus_height, monitor, args.orientation) |
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mouse.move( |
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monitor.x + mapped_x - mouse.position[0], |
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monitor.y + mapped_y - mouse.position[1] |
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) |
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new_x = new_y = False |
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