1/* GTK - The GIMP Toolkit
2 * Copyright (C) 2017, Red Hat, Inc.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
16 *
17 * Author(s): Carlos Garnacho <carlosg@gnome.org>
18 */
19
20#ifndef __GTK_EVENT_CONTROLLER_SCROLL_H__
21#define __GTK_EVENT_CONTROLLER_SCROLL_H__
22
23#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
24#error "Only <gtk/gtk.h> can be included directly."
25#endif
26
27#include <gdk/gdk.h>
28#include <gtk/gtkeventcontroller.h>
29
30G_BEGIN_DECLS
31
32#define GTK_TYPE_EVENT_CONTROLLER_SCROLL (gtk_event_controller_scroll_get_type ())
33#define GTK_EVENT_CONTROLLER_SCROLL(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_EVENT_CONTROLLER_SCROLL, GtkEventControllerScroll))
34#define GTK_EVENT_CONTROLLER_SCROLL_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GTK_TYPE_EVENT_CONTROLLER_SCROLL, GtkEventControllerScrollClass))
35#define GTK_IS_EVENT_CONTROLLER_SCROLL(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_EVENT_CONTROLLER_SCROLL))
36#define GTK_IS_EVENT_CONTROLLER_SCROLL_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GTK_TYPE_EVENT_CONTROLLER_SCROLL))
37#define GTK_EVENT_CONTROLLER_SCROLL_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_EVENT_CONTROLLER_SCROLL, GtkEventControllerScrollClass))
38
39typedef struct _GtkEventControllerScroll GtkEventControllerScroll;
40typedef struct _GtkEventControllerScrollClass GtkEventControllerScrollClass;
41
42/**
43 * GtkEventControllerScrollFlags:
44 * @GTK_EVENT_CONTROLLER_SCROLL_NONE: Don't emit scroll.
45 * @GTK_EVENT_CONTROLLER_SCROLL_VERTICAL: Emit scroll with vertical deltas.
46 * @GTK_EVENT_CONTROLLER_SCROLL_HORIZONTAL: Emit scroll with horizontal deltas.
47 * @GTK_EVENT_CONTROLLER_SCROLL_DISCRETE: Only emit deltas that are multiples of 1.
48 * @GTK_EVENT_CONTROLLER_SCROLL_KINETIC: Emit ::decelerate after continuous scroll finishes.
49 * @GTK_EVENT_CONTROLLER_SCROLL_BOTH_AXES: Emit scroll on both axes.
50 *
51 * Describes the behavior of a `GtkEventControllerScroll`.
52 **/
53typedef enum {
54 GTK_EVENT_CONTROLLER_SCROLL_NONE = 0,
55 GTK_EVENT_CONTROLLER_SCROLL_VERTICAL = 1 << 0,
56 GTK_EVENT_CONTROLLER_SCROLL_HORIZONTAL = 1 << 1,
57 GTK_EVENT_CONTROLLER_SCROLL_DISCRETE = 1 << 2,
58 GTK_EVENT_CONTROLLER_SCROLL_KINETIC = 1 << 3,
59 GTK_EVENT_CONTROLLER_SCROLL_BOTH_AXES = (GTK_EVENT_CONTROLLER_SCROLL_VERTICAL | GTK_EVENT_CONTROLLER_SCROLL_HORIZONTAL),
60} GtkEventControllerScrollFlags;
61
62GDK_AVAILABLE_IN_ALL
63GType gtk_event_controller_scroll_get_type (void) G_GNUC_CONST;
64
65GDK_AVAILABLE_IN_ALL
66GtkEventController *gtk_event_controller_scroll_new (GtkEventControllerScrollFlags flags);
67GDK_AVAILABLE_IN_ALL
68void gtk_event_controller_scroll_set_flags (GtkEventControllerScroll *scroll,
69 GtkEventControllerScrollFlags flags);
70GDK_AVAILABLE_IN_ALL
71GtkEventControllerScrollFlags
72 gtk_event_controller_scroll_get_flags (GtkEventControllerScroll *scroll);
73
74G_END_DECLS
75
76#endif /* __GTK_EVENT_CONTROLLER_SCROLL_H__ */
77

source code of gtk/gtk/gtkeventcontrollerscroll.h