1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* GTK - The GIMP Toolkit
*
* Copyright (C) 2014 Lieven van der Heide
*
* 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 2.1 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/>.
*/
#pragma once
#include <glib.h>
G_BEGIN_DECLS
typedef enum {
GTK_KINETIC_SCROLLING_CHANGE_NONE = 0,
GTK_KINETIC_SCROLLING_CHANGE_LOWER = 1 << 0,
GTK_KINETIC_SCROLLING_CHANGE_UPPER = 1 << 1,
GTK_KINETIC_SCROLLING_CHANGE_IN_OVERSHOOT = 1 << 2,
} GtkKineticScrollingChange;
typedef struct _GtkKineticScrolling GtkKineticScrolling;
GtkKineticScrolling * gtk_kinetic_scrolling_new (gint64 frame_time,
double lower,
double upper,
double overshoot_width,
double decel_friction,
double overshoot_friction,
double initial_position,
double initial_velocity);
void gtk_kinetic_scrolling_free (GtkKineticScrolling *kinetic);
GtkKineticScrollingChange gtk_kinetic_scrolling_update_size (GtkKineticScrolling *data,
double lower,
double upper);
gboolean gtk_kinetic_scrolling_tick (GtkKineticScrolling *data,
gint64 frame_time,
double *position,
double *velocity);
void gtk_kinetic_scrolling_stop (GtkKineticScrolling *data);
G_END_DECLS
|
