def frompath(klass, value):
"""Construct a URI from an unescaped filename."""
# windows unicode path chars may break pathname2url; encode in UTF-8
if isinstance(value, unicode): value = value.encode("UTF-8")
return klass("file://" + pathname2url(value), escaped=True)
def frompath(klass, value):
"""Construct a URI from an unescaped filename."""
return klass("file://" + pathname2url(value), escaped=True)
def get_thumbnail(path, boundary):
"""Get a thumbnail of an image. Will create/use a thumbnail in
the user's thumbnail directory if possible. Follows the
Free Desktop specification.
http://specifications.freedesktop.org/thumbnail-spec/"""
width, height = boundary
# embedded thumbnails come from /tmp/
# and too big thumbnails make no sense
if path.startswith(tempfile.gettempdir()) or \
width > 256 or height > 256 or mtime(path) == 0:
return gtk.gdk.pixbuf_new_from_file_at_size(path, width, height)
if width <= 128 and height <= 128:
size_name = "normal"
thumb_size = 128
else:
size_name = "large"
thumb_size = 256
thumb_folder = get_thumbnail_folder()
cache_dir = os.path.join(thumb_folder, size_name)
mkdir(cache_dir, 0700)
bytes = path
if isinstance(path, unicode):
bytes = path.encode("utf-8")
uri = "file://" + pathname2url(bytes)
thumb_name = hash.md5(uri).hexdigest() + ".png"
thumb_path = os.path.join(cache_dir, thumb_name)
pb = meta_mtime = None
if os.path.exists(thumb_path):
pb = gtk.gdk.pixbuf_new_from_file(thumb_path)
meta_mtime = pb.get_option("tEXt::Thumb::MTime")
meta_mtime = meta_mtime and int(meta_mtime)
if not pb or meta_mtime != int(mtime(path)):
pb = gtk.gdk.pixbuf_new_from_file(path)
#Too small picture, no thumbnail needed
if pb.get_width() < thumb_size and pb.get_height() < thumb_size:
return scale(pb, boundary)
mime = gtk.gdk.pixbuf_get_file_info(path)[0]['mime_types'][0]
options = {
"tEXt::Thumb::Image::Width": str(pb.get_width()),
"tEXt::Thumb::Image::Height": str(pb.get_height()),
"tEXt::Thumb::URI": uri,
"tEXt::Thumb::MTime": str(int(mtime(path))),
"tEXt::Thumb::Size": str(os.path.getsize(fsnative(path))),
"tEXt::Thumb::Mimetype": mime,
"tEXt::Software": "QuodLibet"
}
pb = scale(pb, (thumb_size, thumb_size))
pb.save(thumb_path, "png", options)
os.chmod(thumb_path, 0600)
return scale(pb, boundary)
