255 lines
8.9 KiB
Python
255 lines
8.9 KiB
Python
# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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# Copyright (c) 2008-2022 pyglet contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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import ctypes
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import pyglet
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from pyglet.input.base import DeviceOpenException
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from pyglet.input.base import Tablet, TabletCanvas
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from pyglet.libs.win32 import libwintab as wintab
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lib = wintab.lib
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def wtinfo(category, index, buffer):
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size = lib.WTInfoW(category, index, None)
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assert size <= ctypes.sizeof(buffer)
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lib.WTInfoW(category, index, ctypes.byref(buffer))
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return buffer
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def wtinfo_string(category, index):
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size = lib.WTInfoW(category, index, None)
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buffer = ctypes.create_unicode_buffer(size)
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lib.WTInfoW(category, index, buffer)
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return buffer.value
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def wtinfo_uint(category, index):
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buffer = wintab.UINT()
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lib.WTInfoW(category, index, ctypes.byref(buffer))
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return buffer.value
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def wtinfo_word(category, index):
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buffer = wintab.WORD()
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lib.WTInfoW(category, index, ctypes.byref(buffer))
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return buffer.value
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def wtinfo_dword(category, index):
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buffer = wintab.DWORD()
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lib.WTInfoW(category, index, ctypes.byref(buffer))
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return buffer.value
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def wtinfo_wtpkt(category, index):
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buffer = wintab.WTPKT()
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lib.WTInfoW(category, index, ctypes.byref(buffer))
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return buffer.value
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def wtinfo_bool(category, index):
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buffer = wintab.BOOL()
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lib.WTInfoW(category, index, ctypes.byref(buffer))
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return bool(buffer.value)
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class WintabTablet(Tablet):
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def __init__(self, index):
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self._device = wintab.WTI_DEVICES + index
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self.name = wtinfo_string(self._device, wintab.DVC_NAME).strip()
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self.id = wtinfo_string(self._device, wintab.DVC_PNPID)
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hardware = wtinfo_uint(self._device, wintab.DVC_HARDWARE)
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# phys_cursors = hardware & wintab.HWC_PHYSID_CURSORS
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n_cursors = wtinfo_uint(self._device, wintab.DVC_NCSRTYPES)
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first_cursor = wtinfo_uint(self._device, wintab.DVC_FIRSTCSR)
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self.pressure_axis = wtinfo(self._device, wintab.DVC_NPRESSURE, wintab.AXIS())
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self.cursors = []
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self._cursor_map = {}
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for i in range(n_cursors):
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cursor = WintabTabletCursor(self, i + first_cursor)
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if not cursor.bogus:
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self.cursors.append(cursor)
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self._cursor_map[i + first_cursor] = cursor
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def open(self, window):
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return WintabTabletCanvas(self, window)
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class WintabTabletCanvas(TabletCanvas):
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def __init__(self, device, window, msg_base=wintab.WT_DEFBASE):
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super(WintabTabletCanvas, self).__init__(window)
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self.device = device
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self.msg_base = msg_base
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# Just use system context, for similarity w/ os x and xinput.
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# WTI_DEFCONTEXT detaches mouse from tablet, which is nice, but not
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# possible on os x afiak.
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self.context_info = context_info = wintab.LOGCONTEXT()
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wtinfo(wintab.WTI_DEFSYSCTX, 0, context_info)
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context_info.lcMsgBase = msg_base
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context_info.lcOptions |= wintab.CXO_MESSAGES
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# If you change this, change definition of PACKET also.
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context_info.lcPktData = (
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wintab.PK_CHANGED | wintab.PK_CURSOR | wintab.PK_BUTTONS |
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wintab.PK_X | wintab.PK_Y | wintab.PK_Z |
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wintab.PK_NORMAL_PRESSURE | wintab.PK_TANGENT_PRESSURE |
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wintab.PK_ORIENTATION)
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context_info.lcPktMode = 0 # All absolute
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self._context = lib.WTOpenW(window._hwnd, ctypes.byref(context_info), True)
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if not self._context:
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raise DeviceOpenException("Couldn't open tablet context")
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window._event_handlers[msg_base + wintab.WT_PACKET] = self._event_wt_packet
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window._event_handlers[msg_base + wintab.WT_PROXIMITY] = self._event_wt_proximity
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self._current_cursor = None
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self._pressure_scale = device.pressure_axis.get_scale()
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self._pressure_bias = device.pressure_axis.get_bias()
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def close(self):
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lib.WTClose(self._context)
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self._context = None
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del self.window._event_handlers[self.msg_base + wintab.WT_PACKET]
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del self.window._event_handlers[self.msg_base + wintab.WT_PROXIMITY]
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def _set_current_cursor(self, cursor_type):
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if self._current_cursor:
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self.dispatch_event('on_leave', self._current_cursor)
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self._current_cursor = self.device._cursor_map.get(cursor_type, None)
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if self._current_cursor:
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self.dispatch_event('on_enter', self._current_cursor)
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@pyglet.window.win32.Win32EventHandler(0)
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def _event_wt_packet(self, msg, wParam, lParam):
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if lParam != self._context:
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return
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packet = wintab.PACKET()
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if lib.WTPacket(self._context, wParam, ctypes.byref(packet)) == 0:
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return
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if not packet.pkChanged:
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return
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window_x, window_y = self.window.get_location() # TODO cache on window
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window_y = self.window.screen.height - window_y - self.window.height
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x = packet.pkX - window_x
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y = packet.pkY - window_y
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pressure = (packet.pkNormalPressure + self._pressure_bias) * self._pressure_scale
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if self._current_cursor is None:
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self._set_current_cursor(packet.pkCursor)
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self.dispatch_event('on_motion', self._current_cursor, x, y, pressure, 0., 0.)
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@pyglet.window.win32.Win32EventHandler(0)
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def _event_wt_proximity(self, msg, wParam, lParam):
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if wParam != self._context:
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return
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if not lParam & 0xffff0000:
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# Not a hardware proximity event
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return
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if not lParam & 0xffff:
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# Going out
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self.dispatch_event('on_leave', self._current_cursor)
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# If going in, proximity event will be generated by next event, which
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# can actually grab a cursor id.
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self._current_cursor = None
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class WintabTabletCursor:
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def __init__(self, device, index):
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self.device = device
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self._cursor = wintab.WTI_CURSORS + index
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self.name = wtinfo_string(self._cursor, wintab.CSR_NAME).strip()
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self.active = wtinfo_bool(self._cursor, wintab.CSR_ACTIVE)
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pktdata = wtinfo_wtpkt(self._cursor, wintab.CSR_PKTDATA)
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# A whole bunch of cursors are reported by the driver, but most of
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# them are hogwash. Make sure a cursor has at least X and Y data
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# before adding it to the device.
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self.bogus = not (pktdata & wintab.PK_X and pktdata & wintab.PK_Y)
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if self.bogus:
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return
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self.id = (wtinfo_dword(self._cursor, wintab.CSR_TYPE) << 32) | \
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wtinfo_dword(self._cursor, wintab.CSR_PHYSID)
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def __repr__(self):
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return 'WintabCursor(%r)' % self.name
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def get_spec_version():
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spec_version = wtinfo_word(wintab.WTI_INTERFACE, wintab.IFC_SPECVERSION)
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return spec_version
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def get_interface_name():
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interface_name = wtinfo_string(wintab.WTI_INTERFACE, wintab.IFC_WINTABID)
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return interface_name
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def get_implementation_version():
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impl_version = wtinfo_word(wintab.WTI_INTERFACE, wintab.IFC_IMPLVERSION)
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return impl_version
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def get_tablets(display=None):
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# Require spec version 1.1 or greater
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if get_spec_version() < 0x101:
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return []
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n_devices = wtinfo_uint(wintab.WTI_INTERFACE, wintab.IFC_NDEVICES)
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devices = [WintabTablet(i) for i in range(n_devices)]
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return devices
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