Created
December 3, 2013 16:01
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Shows how to configure a transparency-enabled Webkit WebView in Gtk 3. 2013.
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| # Transparency in Webkit and Gtk. | |
| from gi.repository import Gtk, Gdk, GLib, WebKit | |
| transparent_window_style_provider = Gtk.CssProvider() | |
| transparent_window_style_provider.load_from_data(""" | |
| GtkWindow { | |
| background-color: rgba(100,100,0,0); | |
| background-image: none; | |
| }""") | |
| # If the following two lines are not run before everything else, extremely weird things happen! | |
| GLib.threads_init() | |
| Gdk.threads_init() | |
| w = Gtk.Window(Gtk.WindowType.TOPLEVEL, title='Transparent Webkit and Gtk?') | |
| w.connect('delete-event', Gtk.main_quit) | |
| w.set_visual(w.get_screen().get_rgba_visual()) | |
| all_state_flags = [Gtk.StateFlags.ACTIVE, Gtk.StateFlags.BACKDROP, Gtk.StateFlags.DIR_LTR, Gtk.StateFlags.DIR_RTL, Gtk.StateFlags.FOCUSED, Gtk.StateFlags.INCONSISTENT, Gtk.StateFlags.INSENSITIVE, Gtk.StateFlags.NORMAL, Gtk.StateFlags.PRELIGHT, Gtk.StateFlags.SELECTED] | |
| for flag in all_state_flags: | |
| w.override_background_color(flag, Gdk.RGBA(0,0,0,0)) | |
| w.get_style_context().add_provider(transparent_window_style_provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION) | |
| wv = WebKit.WebView() | |
| wv.set_transparent(True) | |
| for flag in all_state_flags: | |
| wv.override_background_color(flag, Gdk.RGBA(0,0,0,0)) | |
| wv.load_html_string( | |
| ''' | |
| <html> | |
| <head> | |
| <style type="text/css"> | |
| body { | |
| background-color: rgba(0,0,100,0.3); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| Transparent gtk-webkit background! | |
| </body> | |
| </html>''', '') | |
| w.add(wv) | |
| w.show_all() | |
| Gtk.main() |
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