source: mainline/uspace/lib/ui/private/clickmatic.h

Last change on this file was 8965860c, checked in by Jiri Svoboda <jiri@…>, 3 years ago

Clickmatic

A class that periodically generates when held, after initial delay.
This is quite similar to the typematic feature found in PC keyboards.
We use it to automatically scroll when scrollbar button or through
is held.

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1/*
2 * Copyright (c) 2022 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libui
30 * @{
31 */
32/**
33 * @file Clickmatic structure
34 *
35 */
36
37#ifndef _UI_PRIVATE_CLICKMATIC_H
38#define _UI_PRIVATE_CLICKMATIC_H
39
40#include <fibril_synch.h>
41#include <gfx/coord.h>
42
43/** Actual structure of clickmatic.
44 *
45 * This is private to libui.
46 */
47struct ui_clickmatic {
48 /** Containing user interface */
49 struct ui *ui;
50 /** Callbacks */
51 struct ui_clickmatic_cb *cb;
52 /** Callback argument */
53 void *arg;
54 /** Click position */
55 gfx_coord2_t pos;
56 /** Timer */
57 fibril_timer_t *timer;
58};
59
60extern void ui_clickmatic_clicked(ui_clickmatic_t *);
61
62#endif
63
64/** @}
65 */
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