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core: implement most useful events, closes #2445
author David Demelier <markand@malikania.fr>
date Wed, 08 Jan 2020 13:33:41 +0100
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children 5519ad48822e
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18:3ddd3acfe0e9 19:bc1fdff76775
1 /*
2 * event.h -- event management
3 *
4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #ifndef MOLKO_EVENT_H
20 #define MOLKO_EVENT_H
21
22 /**
23 * \file event.h
24 * \brief Event management.
25 */
26
27 #include <stdbool.h>
28 #include <stdint.h>
29
30 #include "key.h"
31 #include "mouse.h"
32
33 /**
34 * \brief Kind of event.
35 */
36 enum event_type {
37 EVENT_CLICKDOWN, /*!< Mouse click down */
38 EVENT_CLICKUP, /*!< Mouse click released */
39 EVENT_KEYDOWN, /*!< Single key down */
40 EVENT_KEYUP, /*!< Single key released */
41 EVENT_MOUSE, /*!< Mouse moved */
42 EVENT_QUIT, /*!< Quit request */
43 };
44
45 /**
46 * \brief Store events.
47 */
48 union event {
49 enum event_type type; /*!< Which kind of event */
50
51 struct {
52 enum event_type type; /*!< EVENT_KEYDOWN or EVENT_KEYUP */
53 enum key key; /*!< Which key */
54 } key;
55
56 struct {
57 enum event_type type; /*!< EVENT_MOUSE */
58 enum mouse_button buttons; /*!< OR'ed buttons that are pressed */
59 int32_t x; /*!< Mouse position in x */
60 int32_t y; /*!< Mouse position in y */
61 } mouse;
62
63 struct {
64 enum event_type type; /*!< EVENT_CLICKDOWN or EVENT_CLICKUP */
65 enum mouse_button button; /*!< Unique button that was pressed */
66 int32_t x; /*!< Mouse position in x */
67 int32_t y; /*!< Mouse position in y */
68 } click;
69 };
70
71 /**
72 * Fetch the next event or return false if there are not.
73 *
74 * \param ev the event
75 * \return true if the event was filled or false otherwise
76 */
77 bool
78 event_poll(union event *ev);
79
80 #endif /* !MOLKO_EVENT_H */