[gnome-builder/gnome-builder-41] app: work around ibus breakage

[Christian Hergert <chergert src gnome org>]

commit f625fa249efafa539d4c7981b8fc97422c54c444
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 29 17:18:29 2021 -0800

    app: work around ibus breakage
    
    Ibus sort of screwed us over in that changing their keybinding means that
    the Shell is stealing our input before we can ever get to it. This tries
    to catch the key-release and do what our keybinding was meant to do.
    
    There is one slight annoyance in that we get the emoji 'e' for just a
    moment until the widget changes focus and the precommit text is altered.
    A small price to pay to have things still work.
    
    This will all go away in a GTK 4 version of Builder since we wont need
    the snooper and can instead use a different keybinding for the new
    integrated search/command-bar.
    
    Fixes #1550

 src/libide/gui/ide-application.c | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
---
diff --git a/src/libide/gui/ide-application.c b/src/libide/gui/ide-application.c
index d207f3482..a81ba233c 100644
--- a/src/libide/gui/ide-application.c
+++ b/src/libide/gui/ide-application.c
@@ -119,6 +119,42 @@ ide_application_register_keybindings (IdeApplication *self)
   g_settings_bind (settings, "keybindings", self->keybindings, "mode", G_SETTINGS_BIND_GET);
 }
 
+static int
+keybinding_key_snooper (GtkWidget   *grab_widget,
+                        GdkEventKey *key,
+                        gpointer     func_data)
+{
+  IdeApplication *self = func_data;
+
+  g_assert (IDE_IS_APPLICATION (self));
+
+  /* We need to hijack <Ctrl>period because ibus is messing it up. However,
+   * we only get a release event since it gets hijacked from the compositor
+   * so we never see the event. Instead, we catch the release and then change
+   * the focus to what we want (clearlying the state created in the compositor
+   * ibus bits).
+   */
+  if (key->type == GDK_KEY_RELEASE &&
+      key->keyval == GDK_KEY_period &&
+      (key->state & GDK_CONTROL_MASK) != 0)
+    {
+      if (IDE_IS_WORKSPACE (grab_widget))
+        {
+          DzlShortcutManager *shortcuts = dzl_shortcut_manager_get_default ();
+
+          g_clear_object (&key->window);
+          key->window = g_object_ref (gtk_widget_get_window (grab_widget));
+          key->type = GDK_KEY_PRESS;
+
+          dzl_shortcut_manager_handle_event (shortcuts, key, grab_widget);
+
+          return TRUE;
+        }
+    }
+
+  return FALSE;
+}
+
 static void
 ide_application_startup (GApplication *app)
 {
@@ -142,6 +178,11 @@ ide_application_startup (GApplication *app)
       g_autofree gchar *style_path = NULL;
       GtkSourceStyleSchemeManager *styles;
 
+      /* Setup key snoopers */
+      G_GNUC_BEGIN_IGNORE_DEPRECATIONS
+      gtk_key_snooper_install (keybinding_key_snooper, self);
+      G_GNUC_END_IGNORE_DEPRECATIONS
+
       /* Setup access to private icons dir */
       gtk_icon_theme_prepend_search_path (gtk_icon_theme_get_default (), PACKAGE_ICONDIR);