How do I apply a CSS to a clutter stage?

Tags: python,css,clutter

Problem :

I'm trying to get some clutter code to apply styles through CSS, but I can't get the styles applied. This is some example of the code that is not working:

from gi.repository import Clutter, GdkPixbuf, Cogl, Gtk, Gdk

stage = Clutter.Stage()
stage.set_size(600, 300)

pixbuf = GdkPixbuf.Pixbuf.new_from_file('menu.svg')
pixel_format = Cogl.PixelFormat.RGBA_8888 if pixbuf.get_has_alpha() \
    else Cogl.PixelFormat.RGB_888

image = Clutter.Image()
image.set_data( pixbuf.get_pixels(), pixel_format, pixbuf.get_width(),
    pixbuf.get_height(), pixbuf.get_rowstride())

image_actor = Clutter.Actor()

css = """
#MyImage {
    icon-shadow: red 0px 0px 30px;
    background-color: #000000;
    margin: 10px;
style_provider = Gtk.CssProvider()

# This is the part that doesn't work

stage.connect("destroy", lambda w:  Clutter.main_quit())

I've tried several different things, but the style never gets applied.

Solution :

Clutter does not know anything about GTK+ or CSS, so you cannot use the GTK+ CSS machinery with Clutter.

if you want to use a GtkStyleContext and the GTK+ API to draw something inside a ClutterActor, you can use a ClutterCanvas content, and then use the gtk_render_* API with the Cairo context that the ClutterCanvas::draw signal gives you.

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