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+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimpcontroller.h
+ * Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
+ *
+ * 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 3 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
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef GIMP_ENABLE_CONTROLLER_UNDER_CONSTRUCTION
+#error GimpController is unstable API under construction
+#endif
+
+#ifndef __GIMP_CONTROLLER_H__
+#define __GIMP_CONTROLLER_H__
+
+G_BEGIN_DECLS
+
+/* For information look at the html documentation */
+
+
+/**
+ * GimpControllerEventType:
+ * @GIMP_CONTROLLER_EVENT_TRIGGER: the event is a simple trigger
+ * @GIMP_CONTROLLER_EVENT_VALUE: the event carries a double value
+ *
+ * Event types for #GimpController.
+ **/
+typedef enum
+{
+ GIMP_CONTROLLER_EVENT_TRIGGER,
+ GIMP_CONTROLLER_EVENT_VALUE
+} GimpControllerEventType;
+
+
+typedef struct _GimpControllerEventAny GimpControllerEventAny;
+typedef struct _GimpControllerEventTrigger GimpControllerEventTrigger;
+typedef struct _GimpControllerEventValue GimpControllerEventValue;
+typedef union _GimpControllerEvent GimpControllerEvent;
+
+/**
+ * GimpControllerEventAny:
+ * @type: The event's #GimpControllerEventType
+ * @source: The event's source #GimpController
+ * @event_id: The event's ID
+ *
+ * Generic controller event. Every event has these three members at the
+ * beginning of its struct
+ **/
+struct _GimpControllerEventAny
+{
+ GimpControllerEventType type;
+ GimpController *source;
+ gint event_id;
+};
+
+/**
+ * GimpControllerEventTrigger:
+ * @type: The event's #GimpControllerEventType
+ * @source: The event's source #GimpController
+ * @event_id: The event's ID
+ *
+ * Trigger controller event.
+ **/
+struct _GimpControllerEventTrigger
+{
+ GimpControllerEventType type;
+ GimpController *source;
+ gint event_id;
+};
+
+/**
+ * GimpControllerEventValue:
+ * @type: The event's #GimpControllerEventType
+ * @source: The event's source #GimpController
+ * @event_id: The event's ID
+ * @value: The event's value
+ *
+ * Value controller event.
+ **/
+struct _GimpControllerEventValue
+{
+ GimpControllerEventType type;
+ GimpController *source;
+ gint event_id;
+ GValue value;
+};
+
+/**
+ * GimpControllerEvent:
+ * @type: The event type
+ * @any: GimpControllerEventAny
+ * @trigger: GimpControllerEventTrigger
+ * @value: GimpControllerEventValue
+ *
+ * A union to hjold all event event types
+ **/
+union _GimpControllerEvent
+{
+ GimpControllerEventType type;
+ GimpControllerEventAny any;
+ GimpControllerEventTrigger trigger;
+ GimpControllerEventValue value;
+};
+
+
+#define GIMP_TYPE_CONTROLLER (gimp_controller_get_type ())
+#define GIMP_CONTROLLER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CONTROLLER, GimpController))
+#define GIMP_CONTROLLER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CONTROLLER, GimpControllerClass))
+#define GIMP_IS_CONTROLLER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CONTROLLER))
+#define GIMP_IS_CONTROLLER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CONTROLLER))
+#define GIMP_CONTROLLER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CONTROLLER, GimpControllerClass))
+
+
+typedef struct _GimpControllerClass GimpControllerClass;
+
+struct _GimpController
+{
+ GObject parent_instance;
+
+ gchar *name;
+ gchar *state;
+};
+
+struct _GimpControllerClass
+{
+ GObjectClass parent_class;
+
+ const gchar *name;
+ const gchar *help_domain;
+ const gchar *help_id;
+
+ /* virtual functions */
+ gint (* get_n_events) (GimpController *controller);
+ const gchar * (* get_event_name) (GimpController *controller,
+ gint event_id);
+ const gchar * (* get_event_blurb) (GimpController *controller,
+ gint event_id);
+
+ /* signals */
+ gboolean (* event) (GimpController *controller,
+ const GimpControllerEvent *event);
+
+ const gchar *icon_name;
+
+ /* Padding for future expansion */
+ void (* _gimp_reserved2) (void);
+ void (* _gimp_reserved3) (void);
+ void (* _gimp_reserved4) (void);
+};
+
+
+GType gimp_controller_get_type (void) G_GNUC_CONST;
+GimpController * gimp_controller_new (GType controller_type);
+
+gint gimp_controller_get_n_events (GimpController *controller);
+const gchar * gimp_controller_get_event_name (GimpController *controller,
+ gint event_id);
+const gchar * gimp_controller_get_event_blurb (GimpController *controller,
+ gint event_id);
+
+
+/* protected */
+
+gboolean gimp_controller_event (GimpController *controller,
+ const GimpControllerEvent *event);
+
+
+G_END_DECLS
+
+#endif /* __GIMP_CONTROLLER_H__ */