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comparison examples/example-ui/button-glower.c @ 507:d49a05e7a5b5

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ui: separate delegate/style Now UI elements do have different styling properties: - _delegate: functions used to update, draw or perform specific actions on the UI element. - _style: basic properties that the delegate should support if possible.
author David Demelier <markand@malikania.fr>
date Thu, 02 Mar 2023 21:36:43 +0100
parents examples/example-ui/button-style-glow.h@e205625015ba
children 7e7c6786d21e
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506:e205625015ba 507:d49a05e7a5b5
1 /*
2 * button-style-glow.c -- example of glowing button
3 *
4 * Copyright (c) 2020-2023 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 #include <assert.h>
20
21 #include "button-glower.h"
22
23 static void
24 update(struct mlk_button_delegate *delegate, struct mlk_button *button, unsigned int ticks)
25 {
26 (void)button;
27
28 struct button_glower *glower = delegate->data;
29
30 mlk_glower_update(&glower->glower, ticks);
31 glower->style.bg_color = glower->glower.color;
32 }
33
34 void
35 button_glower_init(struct button_glower *glower, struct mlk_button *button)
36 {
37 assert(glower);
38
39 glower->style.bg_color = glower->glower.start;
40 glower->delegate.data = glower;
41 glower->delegate.update = update;
42
43 /* Link this style and delegate to the button. */
44 button->style = &glower->style;
45 button->delegate = &glower->delegate;
46
47 mlk_glower_init(&glower->glower);
48 }