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patch [#25972] blender-thumbnailer.py: GVFS support

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from Shinsuke Irie (irie) with some minor edits.

Shinsuke's description from the tracker:
---
I have implemented GVFS framework support of blender-thumbnailer.py which allows some file managers like Nautilus and Thunar to show thumbnails in trash or network directories. If Python's gio module is available, the thumbnailer uses it to access to filesystems mounted via GVFS. This change shouldn't affect desktop environments other than GNOME and XFCE.

A function gvfs_open() in this patch is defined to solve a stupid incompatibility between Python file object and GIO Seekable object.

On Ubuntu 10.10, I confirmed thumbnails can be generated for file://, trash://, sftp://, and smb://.
This commit is contained in:
Campbell Barton 2011-02-09 02:09:30 +00:00
parent 4eb76a1a90
commit 30552f9f46
1 changed files with 25 additions and 3 deletions
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28
release/bin/blender-thumbnailer.py
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@ -24,27 +24,49 @@
Thumbnailer runs with python 2.6 and 3.x. Thumbnailer runs with python 2.6 and 3.x.
To run automatically with nautilus: To run automatically with nautilus:
gconftool --type boolean --set /desktop/gnome/thumbnailers/application@x-blender/enable true gconftool --type boolean --set /desktop/gnome/thumbnailers/application@x-blender/enable true
gconftool --type string --set /desktop/gnome/thumbnailers/application@x-blender/command "blender-thumbnailer.py %i %o" gconftool --type string --set /desktop/gnome/thumbnailers/application@x-blender/command "blender-thumbnailer.py %u %o"
""" """
import struct import struct
def open_wrapper_get():
""" wrap OS spesific read functionality here, fallback to 'open()'
"""
def open_gio(path, mode):
g_file = gio.File(path).read()
g_file.orig_seek = g_file.seek
def new_seek(offset, whence=0):
return g_file.orig_seek(offset, [1, 0, 2][whence])
g_file.seek = new_seek
return g_file
try:
import gio
return open_gio
except ImportError:
return open
def blend_extract_thumb(path): def blend_extract_thumb(path):
import os import os
open_wrapper = open_wrapper_get()
# def MAKE_ID(tag): ord(tag[0])<<24 | ord(tag[1])<<16 | ord(tag[2])<<8 | ord(tag[3]) # def MAKE_ID(tag): ord(tag[0])<<24 | ord(tag[1])<<16 | ord(tag[2])<<8 | ord(tag[3])
REND = 1145980242 # MAKE_ID(b'REND') REND = 1145980242 # MAKE_ID(b'REND')
TEST = 1414743380 # MAKE_ID(b'TEST') TEST = 1414743380 # MAKE_ID(b'TEST')
blendfile = open(path, 'rb') blendfile = open_wrapper(path, 'rb')
head = blendfile.read(12) head = blendfile.read(12)
if head[0:2] == b'\x1f\x8b': # gzip magic if head[0:2] == b'\x1f\x8b': # gzip magic
import gzip import gzip
blendfile.close() blendfile.close()
blendfile = gzip.open(path, 'rb') blendfile = gzip.GzipFile('', 'rb', 0, open_wrapper(path, 'rb'))
head = blendfile.read(12) head = blendfile.read(12)
if not head.startswith(b'BLENDER'): if not head.startswith(b'BLENDER'):