sonist-gtk/ui/slider.py

#!/usr/bin/env python3

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

class Slider(Gtk.Scale):
  def __init__(self, width = 256, height = 5):
    Gtk.Scale.__init__(self)

    self.set_name('Slider')
    self.set_range(0, 100)
    self.set_size_request(width, height)
    self.set_draw_value(False)



    css_provider = Gtk.CssProvider()
    style = f"""
      #Slider {{
        outline: none;
      }}
      #Slider trough {{
        background-color: rgba(129, 161, 193, 0.35);
        outline: none;
      }}
       #Slider trough highlight {{
        background-color: rgba(163, 190, 140, 0.75);
      }}
      #Slider slider {{
        background-color: transparent;
        border-color: transparent;
        outline: none;
      }}
    """
    css_provider.load_from_data(style.encode('UTF-8'))

    context = self.get_style_context()
    context.add_provider(css_provider, Gtk.STYLE_PROVIDER_PRIORITY_USER)