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annotate src/core/checkbox.c @ 115:3bd0d3a39e30

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core: implement checkbox, closes #2486
author David Demelier <markand@malikania.fr>
date Sun, 12 Jul 2020 09:44:27 +0200
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115
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1 /*
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2 * checkbox.c -- GUI checkbox
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3 *
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4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20
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21 #include "checkbox.h"
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22 #include "theme.h"
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23 #include "event.h"
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24 #include "maths.h"
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25
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26 static bool
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27 is_boxed(const struct checkbox *cb, const struct event_click *click)
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28 {
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29 assert(cb);
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30 assert(click && click->type == EVENT_CLICKDOWN);
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31
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32 return maths_is_boxed(cb->x, cb->y, cb->w, cb->h, click->x, click->y);
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33 }
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34
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35 void
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36 checkbox_handle(struct checkbox *cb, const union event *ev)
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37 {
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38 assert(cb);
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39 assert(ev);
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40
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41 switch (ev->type) {
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42 case EVENT_CLICKDOWN:
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43 if (is_boxed(cb, &ev->click))
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44 cb->checked = !cb->checked;
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45 break;
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46 default:
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47 break;
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48 }
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49 }
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50
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51 void
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52 checkbox_draw(const struct checkbox *cb)
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53 {
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54 theme_draw_checkbox(cb->theme, cb);
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55 }