[Bf-python] WIP: Displaying Keypresses for VideoTuts

[Carsten Wartmann]

Hi,

I wrote (still working on it) two space andler scripts for showing the 
keys I press during presentations or for video tutorials.

There are some quirks left (some I guess are a Blender limitation, some 
are my bad python skills) but I think it is still usefull.

You have to activate both handlers in the View->Space Handler Scripts menu.

Maybe this idea is worth a consideration to include it into 2.50 (for 
the self running tutorials).

C&C welcome!

Best Regards,
Carsten


Let the code talk:

------------------------------------------------------------------------
# SPACEHANDLER.VIEW3D.EVENT
#
# 2007 Carsten Wartmann
#
# The space handler scripts ShowKeys and DrawKeys are showing
# the actual pressed keys in the 3D View.
#
# This is usefull for presentations or video tutorials where the
# key-combinations
# will give some hints whats going on beside the narration.
#
# To use activate the handlers in the View->Space Handler Scripts memu
# The display will be for the 3DView only and need to activated for
# every
# 3DView you like to see the keypresses.


"""
Problems/Todo

* Tab and Space not showing
* some functions CTRL-Q, CTRL-W etc. not showing
* while in Transformation (GSR) the script gets no events
* B-B combination (Circle Select) not handled, maybe do the same for A-A?

"""


import Blender
from Blender import Draw
import string

try:
     Blender.odo = Blender.odo + 0
except:
     Blender.odo = 0

def Compose(key):
     q = Blender.Window.GetKeyQualifiers()
     quali = ""
     if q & 3:
         quali = "Shift+"
     if q & 12:
         quali = quali + "Alt+"
     if q & 48:
         quali = quali + "Strg+"
# english language uncomment next line
#        quali = quali + "Ctrl+"

     Blender.keypress = quali+key
     Blender.odo=0
     Blender.Redraw()


evt = Blender.event

# a-z
if (evt >= Draw.AKEY and evt <= Draw.ZKEY):
     Compose(string.upper(chr(evt)))

# function keys
if (evt >= Draw.F3KEY and evt <= Draw.F11KEY):
     Compose("F"+str(evt-303+4))

# number keys
if (evt >= Draw.ZEROKEY and evt <= Draw.NINEKEY):
     Compose(str(evt-48))

elif evt==Draw.ESCKEY:
     Compose("Esc")

elif evt==Draw.TABKEY:
     Compose("Tab")
     # doesnt work... Workaround below

elif evt == Draw.LEFTMOUSE:
     Compose("LMB")
elif evt == Draw.MIDDLEMOUSE:
     Compose("MMB")
elif evt == Draw.RIGHTMOUSE:
     Compose("RMB")

# there must be a better solution, CTRL+PAD not working
elif evt == Draw.PAD7:
     Compose("PAD7")
elif evt == Draw.PAD1:
     Compose("PAD1")
elif evt == Draw.PAD3:
     Compose("PAD3")
elif evt == Draw.PAD5:
     Compose("PAD5")

# clear keyfield after some mouse movements
elif evt==4:
     Blender.odo = Blender.odo + 1
     if Blender.odo>100:
         Compose("")

# some testing/debugging lines
#print dir(Draw)
#print evt, Draw.ZEROKEY

# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2007: Carsten Wartmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License,
# or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ***** END GPL LICENCE BLOCK *****



---------------------------------------------------------------------------
# SPACEHANDLER.VIEW3D.DRAW
#
# 2007 Carsten Wartmann
#
# The space handler scripts ShowKeys and DrawKeys are showing
# the actual pressed keys in the 3D View.
#
# This is usefull for presentations or video tutorials where the
# key-combinations
# will give some hints whats going on beside the narration.
#
# To use activate the handlers in the View->Space Handler Scripts memu
# The display will be for the 3DView only and need to activated for
# every
# 3DView you like to see the keypresses.


import Blender
from Blender import BGL


def StatusDraw(keystring):
     if keystring<>"":
         BGL.glMatrixMode(BGL.GL_MODELVIEW)
         BGL.glPushMatrix()
         BGL.glLoadIdentity()

         wsx,wsy = Blender.Window.GetAreaSize()
         len = Blender.Draw.GetStringWidth(keystring,"large")
         Blender.BGL.glColor3f(0.8,0.8,0.8)
         Blender.BGL.glRecti(wsx-len-10, 5,wsx-4, 27)
         Blender.BGL.glColor3f(0,0,0)
         Blender.BGL.glRasterPos2i(wsx-len-10+3, 11)
         Blender.Draw.Text("%s" % keystring,"large")

         BGL.glMatrixMode(BGL.GL_MODELVIEW)
         BGL.glPopMatrix()




StatusDraw(Blender.keypress)