HOWTO: Thumbnails for OpenOffice.org 2 files

[henriquemaia]

Worked great!

Thanks!

[KillerKiwi]

Nice one minio

Heres another one, grabs the icon from the current gnome theme instead...
Not really sure what the deal is with the mime types I've got

• gnome-mime-application-vnd.oasis.opendocument.text
• ooo-writer
• gnome-mime-application-vnd.stardivision.writer
• openofficeorg-20-writer
• gnome-mime-application-vnd.sun.xml.writer
• ximian-openoffice-writer
• ooo_writer

Any idea which one is the 'correct' one? My monies on the oasis one.

#!/usr/bin/env python

import gnomevfs
import gtk
import os
import sys
import zipfile
from PIL import Image, ImageEnhance

# Alter these varibles to change thumbnail look
ICON_USE_CURRENT_THEME = True
# If not using current theme then use this path
ICON_PATH_BASE = "/usr/share/icons/hicolor/48x48/apps/" # Change this path to alter icons
ICON_PREFIX = "ooo-" #Ubuntu icons
#ICON_PREFIX="openofficeorg-20-" #OOo2 stock icons

ICON_OPACITY = 0.6 #Opacity of the icon (between 0.0 and 1.0)
THUMBNAIL_BACKGROUND_COLOR = "white" # Color of the background
# Prefix for using mime types
ICON_MIME_PREFIX = "gnome-mime-application-"

in_file_path = gnomevfs.get_local_path_from_uri(sys.argv[1])
out_file_path = sys.argv[2]
path_without_thumbs = os.getenv("HOME")+"/Templates" 
	
def get_icon(thumbnail_size):
	icon_names={"formula":"math","graphics":"draw","presentation":"impress","spreadsheet":"calc","text":"writer"}
	#Get file mimetype
	file_mime_type=gnomevfs.get_mime_type(in_file_path)
	#print file_mime_type
	#Get last part of mimetype name.
	application_name=file_mime_type.split(".")[-1]	
	try:
		#For OOo2 files we have to find icon name in icon_names
		icon_name=icon_names[application_name]
	except:
		#But for OOo1 files it is equal to icon name (without prefix).
		icon_name=application_name
	#Load icon
	if ICON_USE_CURRENT_THEME:
		icon_name = ICON_MIME_PREFIX+ file_mime_type.split("/")[1]
		icon = get_current_theme_icon( icon_name )
	else:
		icon = Image.open(ICON_PATH_BASE+ICON_PREFIX+icon_name +".png").convert("RGBA")
	#Set it's opacity
	icon = set_icon_opacity(icon,ICON_OPACITY)
	#And set it's position in thumbnail
	icon_posx=thumbnail_size[0]-icon.size[0]
	icon_posy=thumbnail_size[1]-icon.size[1]
	icon_width=thumbnail_size[0]
	icon_height=thumbnail_size[1]
	return {"image":icon,"position":(icon_posx,icon_posy,icon_width,icon_height)}	

def get_basic_thumbnail():
	#Find out if the file is not in Templates directory
	if in_file_path.find(path_without_thumbs)!=0:
		try:
			#Extract thumbnail from OOo file and save it
			zip=zipfile.ZipFile(in_file_path,mode="r")
			picture=zip.read("Thumbnails/thumbnail.png")
			zip.close()
			thumbnail=open(out_file_path,"w")
			thumbnail.write(picture)
			thumbnail.write("/n")
			thumbnail.close()
			#Open saved thumbnail
			image=Image.open(out_file_path).convert("RGBA")
			return {"suceeded":True,"image":image,"size":(image.size[0],image.size[1])}
		
		except:
			return {"suceeded":False}
	else:
		return {"suceeded":False}

# Nicked from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/362879
def set_icon_opacity(icon,opacity):
	#Returns an image with reduced opacity.
	assert opacity >= 0 and opacity <= 1
	if icon.mode != 'RGBA':
		icon = icon.convert('RGBA')
	else:
		icon = icon.copy()
	alpha = icon.split()[3]
	alpha = ImageEnhance.Brightness(alpha).enhance(opacity)
	icon.putalpha(alpha)
	return icon

# Convert GTK pixbuf to PIL Image
def convert_pixbuf_to_image(pb):
	assert(pb.get_colorspace() == gtk.gdk.COLORSPACE_RGB)
	dimensions = pb.get_width(), pb.get_height()
	stride = pb.get_rowstride()
	pixels = pb.get_pixels()
	mode = pb.get_has_alpha() and "RGBA" or "RGB"
	return Image.frombuffer(mode, dimensions, pixels,"raw", mode, stride, 1)

# Get the icon from the current GTK theme
def get_current_theme_icon( icon ):
	theme = gtk.icon_theme_get_default()
	#print theme.list_icons()
	pixbuf_icon = theme.load_icon(icon, 46, 0)
	return convert_pixbuf_to_image(pixbuf_icon)

thumbnail=get_basic_thumbnail()
if thumbnail["suceeded"]:
	background=Image.new("RGB", thumbnail["size"], THUMBNAIL_BACKGROUND_COLOR)
	icon=get_icon(thumbnail["size"])
	thumbnail=thumbnail["image"]
	# Add thumbnail
	background.paste(thumbnail, None, thumbnail)
	# Add icon
	background.paste(icon["image"],icon["position"],icon["image"])
	# Save thumbnail
	background.save(out_file_path,"PNG")

[BLTicklemonster]

I don't get it. I already see thumbnails.

[minio]

KillerKiwi:I have no idea either. I would say oasis and stardivision.writer but it is a blind shot. I have one more idea how to change the code so I'll try to do it till end of week.


BLTicklemonster: Huh? Do you have clean breezy install or do you have custom OOo2?

[timczer]

Is there a way to get thumbnails to show up for documents saved in openoffice with excel or word extensions?

[KillerKiwi]

The all knowing wiki knows

http://en.wikipedia.org/wiki/OpenDocument#File_types

application/vnd.oasis.opendocument.text
which Im pretty sure maps to the icon
gnome-mime-application-vnd.oasis.opendocument.text

Which is what the code I posted is using, much 'better' as opendocument is not just openoffice.

Is there a way to get thumbnails to show up for documents saved in openoffice with excel or word extensions?

Not using this method, as far as i know ms formats do not include a thumbnail. You could create one on the fly some how but that would be very slow

Kiwi

[Zxaos]

Ok i rewrote the code once again. It should work (at least it seems to work for me...)

I found that this code doesn't work in Breezy, but the previous code (post 12) did.

[minio]

I found that this code doesn't work in Breezy, but the previous code (post 12) did.

So this is strange, because I have breezy and it works for me. What do you get if you try run it from terminal? To run it from terminal put there something like this:

ooo2-thumbnailer file:///home/yourhome/path_to_some_OOo2_file /home/yourhome/Desktop/img.png

[magnusbb]

When I run this command on my up-to-date Breezy system, using your code from post #12, I get the following output:

File "/usr/bin/ooo2-thumbnailer", line 21
icon_names={"formula":"math","graphics":"draw","pr esentation":"impress","spreadsheet":"calc","text": "writer"}
^
IndentationError: expected an indented block

[minio]

Corrected. There should be a tab at the start of line 21. I wonder where I lost it. Thanks magnusbb for noticing.