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contrib: recommend using a venv for layout.py

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This avoids needing to run pwayland's scanner with root privileges and
install the river-layout bindings to system directories.
This commit is contained in:
Isaac Freund 2021-10-06 12:10:59 +02:00
parent 30da9e7221
commit 3b24e7fcd5
1 changed files with 11 additions and 8 deletions
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19
contrib/layout.py
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@ -18,10 +18,14 @@ from pywayland.protocol.wayland import WlOutput
try: try:
from pywayland.protocol.river_layout_v3 import RiverLayoutManagerV3 from pywayland.protocol.river_layout_v3 import RiverLayoutManagerV3
except: except:
print("Your pywayland package does not have bindings for river-layout-v3.") river_layout_help = """
print("You can add the bindings with the following command:") Your pywayland package does not have bindings for river-layout-v3.
print(" python3 -m pywayland.scanner -i /usr/share/wayland/wayland.xml river-layout-v3.xml") You can generate the bindings with the following command:
print("Note that you may need root privileges if you have pywayland installed system-wide.") python3 -m pywayland.scanner -i /usr/share/wayland/wayland.xml river-layout-v3.xml
It is recommended to use a virtual environment to avoid modifying your
system-wide python installation, See: https://docs.python.org/3/library/venv.html
"""
print(river_layout_help)
quit() quit()
layout_manager = None layout_manager = None
@ -53,12 +57,12 @@ def layout_handle_layout_demand(layout, view_count, usable_w, usable_h, tags, se
# Committing the layout means telling the server that your code is done # Committing the layout means telling the server that your code is done
# laying out windows. Make sure you have pushed exactly the right amount of # laying out windows. Make sure you have pushed exactly the right amount of
# view dimensions, a mismatch is a fatal protocol error. # view dimensions, a mismatch is a fatal protocol error.
# #
# You also have to provide a layout name. This is a user facing string that # You also have to provide a layout name. This is a user facing string that
# the server can forward to status bars. You can use it to tell the user # the server can forward to status bars. You can use it to tell the user
# which layout is currently in use. You could also add some status # which layout is currently in use. You could also add some status
# information status information about your layout, which is what we do here. # information status information about your layout, which is what we do here.
layout.commit(f"{view_count} windows layed out by python", serial) layout.commit(f"{view_count} windows laid out by python", serial)
def layout_handle_namespace_in_use(layout): def layout_handle_namespace_in_use(layout):
# Oh no, the namespace we choose is already used by another client! All we # Oh no, the namespace we choose is already used by another client! All we
@ -67,7 +71,7 @@ def layout_handle_namespace_in_use(layout):
# client could instead destroy only the one single affected layout object # client could instead destroy only the one single affected layout object
# and recover from this mishap. Writing such a client is left as an exercise # and recover from this mishap. Writing such a client is left as an exercise
# for the reader. # for the reader.
print(f"Namespace already in use!") print("Namespace already in use!")
global loop global loop
loop = False loop = False
@ -136,4 +140,3 @@ for output in outputs:
outputs.remove(output) outputs.remove(output)
display.disconnect() display.disconnect()