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@ -35,8 +35,9 @@ import os
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import re
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import subprocess
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from keymapper.paths import CONFIG_PATH, SYMBOLS_PATH
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from keymapper.paths import CONFIG_PATH, SYMBOLS_PATH, KEYCODES_PATH
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from keymapper.logger import logger
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from keymapper.data import get_data_path
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def get_keycode(device, letter):
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@ -46,7 +47,7 @@ def get_keycode(device, letter):
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return ''
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def generate_setxkbmap_config(device, preset, mappings):
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def create_setxkbmap_config(device, preset, mappings):
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"""Generate a config file for setxkbmap.
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The file is created in ~/.config/key-mapper/<device>/<preset> and,
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@ -56,6 +57,8 @@ def generate_setxkbmap_config(device, preset, mappings):
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The file in home doesn't have underscore to be more beautiful on the
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frontend, while the symlink doesn't contain any whitespaces.
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"""
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create_identity_mapping()
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config_path = os.path.join(CONFIG_PATH, device, preset)
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# setxkbmap cannot handle spaces
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usr_path = os.path.join(SYMBOLS_PATH, device, preset).replace(' ', '_')
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@ -69,44 +72,89 @@ def generate_setxkbmap_config(device, preset, mappings):
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os.makedirs(os.path.dirname(usr_path), exist_ok=True)
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os.symlink(config_path, usr_path)
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logger.info('Writing key mappings')
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with open(config_path, 'w') as f:
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f.write(generate_symbols_file_content(device, preset, mappings))
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logger.debug('Wrote key mappings')
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def apply_preset(device, preset):
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# setxkbmap key-mapper/Razer_Razer_Naga_Trinity/new_preset -v 10 -device 12
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# setxkbmap -layout key-mapper/Razer_Razer_Naga_Trinity/new_preset -keycodes key-mapper -v 10 -device 13
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# TODO device 12 is from `xinput list` but currently there is no function
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# to obtain that. And that cli tool outputs all those extra devices.
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# 1. get all names in the group (similar to parse_libinput_list)
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# 2. get all ids from xinput list for each name
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# 3. apply preset to all of them
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pass
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def generate_symbols_file_content(device, preset, mappings):
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"""Create config contents to be placed in /usr/share/X11/xkb/symbols."""
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system_default = 'us' # TODO get the system default
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def create_identity_mapping():
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"""Because the concept of "reasonable symbolic names" [3] doesn't apply
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when mouse buttons are all over the place. Create an identity mapping
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to make generating "symbols" files easier. Keycode 10 -> "<10>"
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# 10 is what the mouse reports
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result = """
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default xkb_symbols "basic" {{
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include "us"
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name[Group1]="{name}";
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key <AE01> { [ 3 ] };
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}};
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default xkb_keycodes "basic" {{
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minimum= 8;
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maximum= 255;
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<AE01> = 10;
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}};
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This has the added benefit that keycodes reported by xev can be
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identified in the symbols file.
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"""
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result = result.format(name=f'{device}/{preset}')
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# TODO don't create this again if it already exists, as soon as this
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# stuff is stable.
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xkb_keycodes = []
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# the maximum specified in /usr/share/X11/xkb/keycodes is usually 255
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# and the minimum 8
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maximum = 255
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minimum = 8
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for code in range(minimum, maximum + 1):
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xkb_keycodes.append(f'<{code}> = {code};')
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template_path = os.path.join(get_data_path(), 'xkb_keycodes_template')
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with open(template_path, 'r') as template_file:
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template = template_file.read()
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result = template.format(
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minimum=minimum,
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maximum=maximum,
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xkb_keycodes='\n '.join(xkb_keycodes)
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)
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logger.info('Creating "%s"', KEYCODES_PATH)
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with open(KEYCODES_PATH, 'w') as keycodes:
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keycodes.write(result)
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for mapping in mappings:
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key = mapping.key
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keycode = get_keycode(device, key)
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target = mapping.target
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def generate_symbols_file_content(device, preset, mappings):
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"""Create config contents to be placed in /usr/share/X11/xkb/symbols.
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Parameters
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----------
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device : string
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preset : string
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mappings : array
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tuples of code, character
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"""
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system_default = 'us' # TODO get the system default
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# WARNING if the symbols file contains key codes that are not present in
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# the keycodes file, the whole X session will crash!
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if not os.path.exists(KEYCODES_PATH):
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raise ValueError('Expected the keycodes file to exist.')
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with open(KEYCODES_PATH, 'r') as f:
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keycodes = re.findall(r'<.+?>', f.read())
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xkb_symbols = []
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for code, character in mappings:
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if f'<{code}>' not in keycodes:
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logger.error(f'Unknown keycode <{code}> for "{character}"')
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xkb_symbols.append(f'key <{code}> {{ [ {character} ] }};')
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template_path = os.path.join(get_data_path(), 'xkb_symbols_template')
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with open(template_path, 'r') as template_file:
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template = template_file.read()
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result = template.format(
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name=f'{device}/{preset}',
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xkb_symbols='\n '.join(xkb_symbols),
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system_default=system_default
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)
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return result
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sezanzeb
4 years ago