Console keyboard scheme switcher

davor (Davor Babic) — Wed, 12 Apr 2006 04:20:52 GMT

Switches between us and swedish (or any other)
keyboard-scheme in the console. Default is US.



#!/bin/sh

# Keyboard switcher script

# Written in 2006 by Davor Babic 

# This software is realeased into public domain



case $1 in

sv)

    echo "Switching to swedish keyboard layout."

    loadkeys /usr/share/keymaps/i386/qwerty/se-latin1.kmap.gz

    ;;

us)

    echo "Switching to US keyboard layout."

    loadkeys /usr/share/keymaps/i386/qwerty/us.kmap.gz

    ;;

default)

    echo "None selected. Loading US..."

    loadkeys /usr/share/keymaps/i386/qwerty/us.kmap.gz

    ;;

esac

Handle keyboard event easily

korakot (Korakot Chaovavanich) — Thu, 09 Feb 2006 21:35:30 GMT

I found a code that simplify keyboard event handling
from the popular pys60 tutorial.
I simplify it a bit (removing some feature but make it easier to read)



from appuifw import *

from key_codes import *



class Keyboard(object):

    def __init__(self):

        self.state = {}  # is this key pressing ?

        self.buffer= {}  # is it waiting to be processed ?

    def handle_event(self, event): # for event_callback

        code = event['scancode']

        if event['type'] == EEventKeyDown:

            self.buffer[code]= 1   # put into queue

            self.state[code] = 1

        elif event['type'] == EEventKeyUp:

            self.state[code] = 0

    def pressing(self, code):      # just check

        return self.state.get(code,0)

    def pressed(self, code):       # check and process the event

        if self.buffer.get(code,0):

            self.buffer[code] = 0  # take out of queue

            return 1

        return 0



key = Keyboard()

app.body = canvas = Canvas(event_callback=key.handle_event)

Now you can check the keyboard status with key.pressing and key.pressed



>>> key.state   # just pressed up arrow

{17: 0}

>>> key.buffer

{17: 1}

>>> key.pressing(EScancodeUpArrow)  # it's not pressing

0

>>> key.pressed(EScancodeUpArrow)   # yes, it's pressed

1

>>> key.pressed(EScancodeUpArrow)   # no, you've just processed it

0

>>>

DZone Snippets: keyboard code

Console keyboard scheme switcher

Handle keyboard event easily