#!/usr/bin/env python3
# -*- mode: python; coding: utf-8 -*-
 
import gi
gi.require_version("Gtk", "4.0")
 
from gi.repository import Gtk, Gdk, Graphene
 
class DrawingWidget(Gtk.Widget):
    def do_snapshot(self, snapshot):
        width = self.get_width() / 2
        height = self.get_height() / 2
        color = Gdk.RGBA()
        
        color.parse("rgba(237, 20, 20, 1.0)")
        snapshot.append_color(
          color,
          # Gdk.RGBA(red=0.18, green=0.8, blue=0.44, alpha=1.0),
          Graphene.Rect.alloc().init(0, 0, width, height)
        )
        
        color.parse("rgba(46, 204, 112, 1.0)")
        snapshot.append_color(
          color,
          # Gdk.RGBA(red=0.18, green=0.8, blue=0.44, alpha=1.0),
          Graphene.Rect.alloc().init(width, 0, width, height)
        )
        
        color.parse("rgba(252, 189, 74, 1.0)")
        snapshot.append_color(
          color,
          # Gdk.RGBA(red=0.18, green=0.8, blue=0.44, alpha=1.0),
          Graphene.Rect.alloc().init(0, height, width, height)
        )
        
        color.parse("rgba(41, 127, 186, 1.0)")
        snapshot.append_color(
          color,
          # Gdk.RGBA(red=0.18, green=0.8, blue=0.44, alpha=1.0),
          Graphene.Rect.alloc().init(width, height, width, height)
        )

def on_activate(app):
    window = Gtk.ApplicationWindow(
        title="Drawing Widget",
        default_width=320,
        default_height=320,
        application=app,
        child=DrawingWidget(hexpand=True, vexpand=True)
    )
    window.present()
 
app = Gtk.Application(application_id='com.example.App')
app.connect('activate', on_activate)
app.run(None)