gtk: Introduce GtkPointerFocus

These objects (tied to a toplevel) track the focus of a pointer/touchpoint.
The info in these basically consists of current toplevel coordinates and the
current target widget.

1 files changed, 52 insertions, 0 deletions

diff --git a/gtk/gtkpointerfocusprivate.h b/gtk/gtkpointerfocusprivate.h
new file mode 100644
index 0000000000..56735d8dcd
--- /dev/null
+++ b/gtk/gtkpointerfocusprivate.h
@@ -0,0 +1,52 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2017 - Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _GTK_POINTER_FOCUS_PRIVATE_H_
+#define _GTK_POINTER_FOCUS_PRIVATE_H_
+
+#include <gtk/gtk.h>
+
+typedef struct _GtkPointerFocus GtkPointerFocus;
+
+struct _GtkPointerFocus
+{
+  GdkDevice *device;
+  GdkEventSequence *sequence;
+  GtkWindow *toplevel;
+  GtkWidget *target; /* Unaffected by the implicit grab */
+  GtkWidget *grab_widget;
+  gdouble x, y; /* In toplevel coordinates */
+};
+
+GtkPointerFocus * gtk_pointer_focus_new  (GtkWindow        *toplevel,
+                                          GtkWidget        *widget,
+                                          GdkDevice        *device,
+                                          GdkEventSequence *sequence,
+                                          gdouble           x,
+                                          gdouble           y);
+void              gtk_pointer_focus_free (GtkPointerFocus *focus);
+
+void              gtk_pointer_focus_set_coordinates (GtkPointerFocus *focus,
+                                                     gdouble          x,
+                                                     gdouble          y);
+void              gtk_pointer_focus_set_target      (GtkPointerFocus *focus,
+                                                     GtkWidget       *target);
+GtkWidget *       gtk_pointer_focus_get_target      (GtkPointerFocus *focus);
+
+void              gtk_pointer_focus_repick_target (GtkPointerFocus *focus);
+
+#endif /* _GTK_POINTER_FOCUS_PRIVATE_H_ */