def __init__(self, window, cursors):
super(XInputTabletCanvas, self).__init__(window)
self.cursors = cursors
dispatcher = XInputWindowEventDispatcher.get_dispatcher(window)
self.display = window.display
self._open_devices = []
self._cursor_map = {}
for cursor in cursors:
device = cursor.device
device_id = device._device_id
self._cursor_map[device_id] = cursor
cursor.max_pressure = device.axes[2].max
if self.display._display != device.display._display:
raise DeviceOpenException('Window and device displays differ')
open_device = xi.XOpenDevice(device.display._display, device_id)
if not open_device:
# Ignore this cursor; fail if no cursors added
continue
self._open_devices.append(open_device)
dispatcher.open_device(device_id, open_device, self)
def __init__(self, device, window, msg_base=wintab.WT_DEFBASE):
super(WintabTabletCanvas, self).__init__(window)
self.device = device
self.msg_base = msg_base
# Just use system context, for similarity w/ os x and xinput.
# WTI_DEFCONTEXT detaches mouse from tablet, which is nice, but not
# possible on os x afiak.
self.context_info = context_info = wintab.LOGCONTEXT()
wtinfo(wintab.WTI_DEFSYSCTX, 0, context_info)
context_info.lcMsgBase = msg_base
context_info.lcOptions |= wintab.CXO_MESSAGES
# If you change this, change definition of PACKET also.
context_info.lcPktData = (
wintab.PK_CHANGED | wintab.PK_CURSOR | wintab.PK_BUTTONS |
wintab.PK_X | wintab.PK_Y | wintab.PK_Z |
wintab.PK_NORMAL_PRESSURE | wintab.PK_TANGENT_PRESSURE |
wintab.PK_ORIENTATION)
context_info.lcPktMode = 0 # All absolute
self._context = lib.WTOpenW(window._hwnd,
ctypes.byref(context_info), True)
if not self._context:
raise DeviceOpenException("Couldn't open tablet context")
window._event_handlers[msg_base + wintab.WT_PACKET] = \
self._event_wt_packet
window._event_handlers[msg_base + wintab.WT_PROXIMITY] = \
self._event_wt_proximity
self._current_cursor = None
self._pressure_scale = device.pressure_axis.get_scale()
self._pressure_bias = device.pressure_axis.get_bias()
def open(self, window=None, exclusive=False):
# Checks for is_open and raises if already open.
# TODO allow opening on multiple windows.
super(XInputDevice, self).open(window, exclusive)
if window is None:
self.is_open = False
raise DeviceOpenException('XInput devices require a window')
if window.display._display != self.display._display:
self.is_open = False
raise DeviceOpenException('Window and device displays differ')
if exclusive:
self.is_open = False
raise DeviceOpenException('Cannot open XInput device exclusive')
self._device = xi.XOpenDevice(self.display._display, self._device_id)
if not self._device:
self.is_open = False
raise DeviceOpenException('Cannot open device')
self._install_events(window)