GNOME/gtkmm 4.19.1

on GNOME GitLab

Gdk:

• Event: Add get_relative_direction() and enum ScrollRelativeDirection.
  (Kjell Ahlstedt)
  

Gsk:

• Transform: Add matrix_2d().
  (Kjell Ahlstedt)
  

Gtk:

• Application: Deprecate property_register_session().
  
• CssProvider: Add property_prefers_color_scheme() and
  property_pref1ers_contrast().
  
• Entry: Add set/get_menu_entry_icon_text(),
  property_menu_entry_icon_primary_text() and
  property_menu_entry_icon_secondary_text().
  
• Add enum InterfaceColorScheme and InterfaceContrast.
  
• FilterListModel: Add get/set/property_watch_items().
  
• Settings: Add property_gtk_interface_color_scheme()
  and property_gtk_interface_contrast().
  (Kjell Ahlstedt)
  

Documentation:

• Add images used in documentation copied by gmmproc.
  
• Gtk::DrawingArea, Gtk::GLArea: Update the class descriptions.
  (Kjell Ahlstedt)
  

Build:

• Require gtk4 >= 4.19.4
  (Kjell Ahlstedt)