Remove ATK

To build a better world sometimes means having to tear the old one down.
        -- Alexander Pierce, "Captain America: The Winter Soldier"

ATK served us well for nearly 20 years, but the world has changed, and
GTK has changed with it. Now ATK is mostly a hindrance towards improving
the accessibility stack:

 - it maps to a very specific implementation, AT-SPI, which is Linux and
   Unix specific
 - it requires implementing the same functionality in three different
   layers of the stack: AT-SPI, ATK, and GTK
 - only GTK uses it; every other Linux and Unix toolkit and application
   talks to AT-SPI directly, including assistive technologies

Sadly, we cannot incrementally port GTK to a new accessibility stack;
since ATK insulates us entirely from the underlying implementation, we
cannot replace it piecemeal. Instead, we're going to remove everything
and then incrementally build on a clean slate:

 - add an "accessible" interface, implemented by GTK objects directly,
   which describe the accessible role and state changes for every UI
   element
 - add an "assistive technology context" to proxy a native accessibility
   API, and assign it to every widget
 - implement the AT context depending on the platform

For more information, see: https://gitlab.gnome.org/GNOME/gtk/-/issues/2833

1 files changed, 0 insertions, 2 deletions

diff --git a/gtk/gtktooltipwindow.c b/gtk/gtktooltipwindow.c
index c30ebf1616..877738117c 100644
--- a/gtk/gtktooltipwindow.c
+++ b/gtk/gtktooltipwindow.c
@@ -29,7 +29,6 @@
 #include "gtkprivate.h"
 #include "gtkintl.h"
 
-#include "gtkaccessible.h"
 #include "gtkbox.h"
 #include "gtkimage.h"
 #include "gtklabel.h"
@@ -382,7 +381,6 @@ gtk_tooltip_window_class_init (GtkTooltipWindowClass *klass)
   widget_class->hide = gtk_tooltip_window_hide;
 
   gtk_widget_class_set_css_name (widget_class, I_("tooltip"));
-  gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_TOOL_TIP);
   gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtktooltipwindow.ui");
 
   gtk_widget_class_bind_template_child (widget_class, GtkTooltipWindow, box);