JAR equivalent in Gordon McMillan's Installer

[Chris Liechti]

"Mike C. Fletcher" <mcfletch at geocities.com> wrote in 
news:mailman.1013812227.6703.python-list at python.org:
> wxImages can be loaded from strings.  See the wxPython Wiki entry on 
> working with images (particularly the sections on PIL and Numeric):
ok just tried this:
------------
import zipfile
from wxPython.wx import *
wxInitAllImageHandlers()    #init wx stuff
#convert file
bmp = wxImage('img.png', wxBITMAP_TYPE_PNG)
raw = bmp.GetData()
zipf = zipfile.ZipFile('hello.zip','w')
info = zipfile.ZipInfo('hello.%d.%d' % (bmp.GetWidth(), bmp.GetHeight
()))
info.compress_type=zipfile.ZIP_DEFLATED
zipf.writestr(info, raw)
del zipf

#use it
zipf = zipfile.ZipFile('hello.zip','r')
entry = zipf.namelist()[0]
name,w,h = entry.split('.')
raw = zipf.read(entry)
img = wxEmptyImage(int(w), int(h))
img.SetData(raw)
#img = img.Rotate(45, (10,10))  #just for fun
img.SaveFile("hello.png", wxBITMAP_TYPE_PNG)
--------

you can use wxPython to convert the images to strings, save them to a 
zip using the zipfile module. the image sizes have to be saved 
separately. i've choosen to stuff them into the filename.

storing uncompressed images in a zip isn't that bad, as e.g png or gif 
also uses some similar compression algos. (in my test the zip was 
smaller than the original png)

-- 
Chris <cliechti at gmx.net>