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annotate examples/example-action/dialog.c @ 575:d682f9142c52

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examples: chest::finish is not required
author David Demelier <markand@malikania.fr>
date Fri, 10 Mar 2023 19:28:01 +0100
parents 7d6a879901e0
children e16808365d42
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1 /*
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2 * dialog.c -- convenient message wrapper
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3 *
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4 * Copyright (c) 2020-2023 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 <mlk/example/example.h>
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22
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23 #include "dialog.h"
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24
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25 /* Message width is 80% of window width and height is auto computed. */
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26 #define QMW (MLK_EXAMPLE_W * 0.8)
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27
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28 /* Position of each message. */
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29 #define QMX ((MLK_EXAMPLE_W - QMW) / 2)
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30 #define QMY (MLK_EXAMPLE_H * 0.2)
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31
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32 static void
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33 handle(struct mlk_action *act, const union mlk_event *ev)
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34 {
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35 struct dialog *dlg = act->data;
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36
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37 mlk_message_handle(&dlg->msg, ev);
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38 }
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39
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40 static int
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41 update(struct mlk_action *act, unsigned int ticks)
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42 {
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43 struct dialog *dlg = act->data;
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44
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45 return mlk_message_update(&dlg->msg, ticks);
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46 }
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47
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48 static void
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49 draw(struct mlk_action *act)
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50 {
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51 struct dialog *dlg = act->data;
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52
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53 mlk_message_draw(&dlg->msg);
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54 }
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55
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56 static void
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57 end(struct mlk_action *act)
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58 {
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59 struct dialog *dlg = act->data;
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60
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61 if ((dlg->msg.flags & MLK_MESSAGE_FLAGS_QUESTION) && dlg->response)
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62 dlg->response(dlg, dlg->msg.index);
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63 }
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64
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65 struct mlk_action *
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66 dialog_init(struct dialog *dlg)
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67 {
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68 assert(dlg);
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69
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70 dlg->msg.x = QMX;
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71 dlg->msg.y = QMY;
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72 dlg->msg.w = QMW;
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73
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74 mlk_message_query(&dlg->msg, NULL, &dlg->msg.h);
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75 mlk_message_start(&dlg->msg);
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76
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77 dlg->action.data = dlg;
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78 dlg->action.handle = handle;
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79 dlg->action.update = update;
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80 dlg->action.draw = draw;
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81 dlg->action.end = end;
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82
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83 return &dlg->action;
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84 }