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# Copyright 2015 Sean Vig
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# import collections
import mmap
import os
import sys
import tempfile
this_file = os.path.abspath(__file__)
this_dir = os.path.split(this_file)[0]
root_dir = os.path.split(this_dir)[0]
pywayland_dir = os.path.join(root_dir, "pywayland")
if os.path.exists(pywayland_dir):
sys.path.append(root_dir)
from pywayland.client import Display # noqa: E402
from pywayland.protocol.wayland import ( # noqa: E402
WlCompositor,
WlSeat,
WlShell,
WlShm,
)
def create_shm_buffer(touch, width, height):
stride = width * 4
size = stride * height
with tempfile.TemporaryFile() as f:
f.write(b"\x64" * size)
f.flush()
fd = f.fileno()
touch["data"] = mmap.mmap(
fd, size, mmap.MAP_SHARED, mmap.PROT_READ | mmap.PROT_WRITE
)
pool = touch["shm"].create_pool(fd, size)
touch["buffer"] = pool.create_buffer(
0, width, height, stride, WlShm.format.argb8888.value
)
pool.destroy()
def handle_touch_down(wl_touch, serial, time, surface, id, x, y):
# touch = wl_touch.user_data
# touch_paint(touch, x, y, id)
return 0
def handle_touch_motion(wl_touch, time, id, x, y):
# touch = wl_touch.user_data
# touch_paint(touch, x, y, id)
return 0
def handle_seat_capabilities(wl_seat, capabilities):
print("capabilities")
seat = wl_seat.user_data
touch = seat["touch"]
if (capabilities & WlSeat.capability.touch.value) and seat["wl_touch"] is None:
seat["wl_touch"] = wl_seat.get_touch()
seat["wl_touch"].user_data = touch
seat["wl_touch"].dispatcher["down"] = handle_touch_down
# seat['wl_touch'].dispatcher['up'] = handle_touch_up
seat["wl_touch"].dispatcher["motion"] = handle_touch_motion
elif not (capabilities & WlSeat.capability.touch.value) and seat["wl_touch"]:
seat["wl_touch"].destroy()
seat["wl_touch"] = None
return 1
def handle_shm_format(wl_shm, fmt):
print("format")
touch = wl_shm.user_data
if fmt == WlShm.format.argb8888.value:
touch["has_argb"] = True
return 1
def handle_shell_surface_ping(wl_shell_surface, serial):
print("ping")
wl_shell_surface.pong(serial)
return 1
def handle_registry_global(wl_registry, id_num, iface_name, version):
print("global", id_num, iface_name)
touch = wl_registry.user_data
if iface_name == "wl_compositor":
touch["compositor"] = wl_registry.bind(id_num, WlCompositor, version)
elif iface_name == "wl_seat":
seat = {}
seat["touch"] = touch
seat["wl_touch"] = None
wl_seat = wl_registry.bind(id_num, WlSeat, version)
wl_seat.dispatcher["capabilities"] = handle_seat_capabilities
wl_seat.user_data = seat
seat["seat"] = wl_seat
elif iface_name == "wl_shell":
touch["shell"] = wl_registry.bind(id_num, WlShell, version)
elif iface_name == "wl_shm":
touch["has_argb"] = False
shm = wl_registry.bind(id_num, WlShm, version)
shm.user_data = touch
shm.dispatcher["format"] = handle_shm_format
touch["shm"] = shm
return 1
def touch_create(width, height):
touch = {}
# Make the display and get the registry
touch["display"] = Display()
touch["display"].connect()
touch["registry"] = touch["display"].get_registry()
touch["registry"].user_data = touch
touch["registry"].dispatcher["global"] = handle_registry_global
touch["display"].dispatch()
touch["display"].roundtrip()
touch["display"].roundtrip()
if not touch["has_argb"]:
print("WL_SHM_FORMAT_ARGB32 not available", file=sys.stderr)
touch["display"].disconnect()
return
touch["width"] = width
touch["height"] = height
touch["surface"] = touch["compositor"].create_surface()
touch["shell_surface"] = touch["shell"].get_shell_surface(touch["surface"])
create_shm_buffer(touch, width, height)
if touch["shell_surface"]:
print("shell")
touch["shell_surface"].dispatcher["ping"] = handle_shell_surface_ping
touch["shell_surface"].set_toplevel()
touch["surface"].user_data = touch
touch["shell_surface"].set_title("simple-touch")
touch["surface"].attach(touch["buffer"], 0, 0)
touch["surface"].damage(0, 0, width, height)
touch["surface"].commit()
return touch
def main():
touch = touch_create(600, 500)
while touch["display"].dispatch() != -1:
pass
touch["display"].disconnect()
if __name__ == "__main__":
main()
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