How Can I Get an Icon or thumbnail for a Specific

问题:

I am searching for a way to get the icon associated with a certain file type on Linux.

Either using a shell script or python.

I prefer a native python method which works on all the platforms, but a shell script method would be ok.

回答1:

I found a solution, and I wrote a function to do the job

#!/usr/bin/env python
import gio, gtk, os

    def get_icon_filename(filename,size):
        #final_filename = "default_icon.png"
        final_filename = ""
        if os.path.isfile(filename):
            # Get the icon name
            file = gio.File(filename)
            file_info = file.query_info('standard::icon')
            file_icon = file_info.get_icon().get_names()[0]
            # Get the icon file path
            icon_theme = gtk.icon_theme_get_default()
            icon_filename = icon_theme.lookup_icon(file_icon, size, 0)
            if icon_filename != None:
                final_filename = icon_filename.get_filename()

        return final_filename


    print get_icon_filename("/home/el7r/Music/test.mp3",64)

thanks all

回答2:

Thanks to @Ali_AlNoaimi for his solution . I changed it to work with python3 and PyGI :

import os , gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gio , Gtk


def get_thumbnail(filename,size):
    final_filename = ""
    if os.path.exists(filename):
        file = Gio.File.new_for_path(filename)
        info = file.query_info('standard::icon' , 0 , Gio.Cancellable())
        icon = info.get_icon().get_names()[0]

        icon_theme = Gtk.IconTheme.get_default()
        icon_file = icon_theme.lookup_icon(icon , size , 0)
        if icon_file != None:
            final_filename = icon_file.get_filename()
        return final_filename

print(get_thumbnail("/path/to/file",32))

回答3:

I don't think that icon files are the same across platforms...

On a Mac, the icons are stored in the application bundle - EG:

/Applications/Mail.app/Contents/Resources/app.icns

In Linux they seem to be in a similar, but different place EG:

 /usr/lib/firefox/icons/mozicon16.xpm

So, I think you are out of luck for an easy, cross-platform solution and will have to code the routine to look into the appropriate place for each OS

回答4:

ImageMagick is pretty good for basic manipulation from the command line. Info at http://www.imagemagick.org/script/index.php