1 #

     2 # keyviewer.py

     3 #

     4 # Copyright (c) 2005 Nokia Corporation

     5 #

     6 # Licensed under the Apache License, Version 2.0 (the "License");

     7 # you may not use this file except in compliance with the License.

     8 # You may obtain a copy of the License at

     9 #

    10 #     http://www.apache.org/licenses/LICENSE-2.0

    11 #

    12 # Unless required by applicable law or agreed to in writing, software

    13 # distributed under the License is distributed on an "AS IS" BASIS,

    14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    15 # See the License for the specific language governing permissions and

    16 # limitations under the License.

    17 #

    18 

    19 import appuifw

    20 import graphics

    21 import e32

    22 

    23 keyboard_state={}

    24 last_keycode=0

    25 

    26 def draw_state():

    27     canvas.clear()

    28     canvas.text((0,12),u'Scancodes of pressed keys:',0x008000)

    29     canvas.text((0,24),u' '.join([unicode(k) for k in keyboard_state if keyboard_state[k]]))

    30     canvas.text((0,36),u' '.join([unicode(hex(k)) for k in keyboard_state if keyboard_state[k]]))

    31     canvas.text((0,48),u'Last received keycode:', 0x008000)    

    32     canvas.text((0,60),u'%s (0x%x)'%(last_keycode,last_keycode))

    33     

    34 def callback(event):

    35     global last_keycode

    36     if event['type'] == appuifw.EEventKeyDown:

    37         keyboard_state[event['scancode']]=1

    38     elif event['type'] == appuifw.EEventKeyUp:

    39         keyboard_state[event['scancode']]=0

    40     elif event['type'] == appuifw.EEventKey:

    41         last_keycode=event['keycode']

    42     draw_state()

    43 

    44 canvas=appuifw.Canvas(event_callback=callback,

    45                       redraw_callback=lambda rect:draw_state())

    46 appuifw.app.body=canvas

    47 

    48 lock=e32.Ao_lock()

    49 appuifw.app.exit_key_handler=lock.signal

    50 lock.wait()