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annotate examples/example-action/dialog.c @ 531:593703440a05

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core: doxygenize music
author David Demelier <markand@malikania.fr>
date Sat, 04 Mar 2023 20:32:49 +0100
parents f14b8290b3ce
children 88e9bd420a28
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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 /* Fading time and spacing. */
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33 #define QMD 250
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34 #define QMS 10
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35
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36 static void
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37 handle(struct mlk_action *act, const union mlk_event *ev)
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38 {
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39 struct dialog *dlg = act->data;
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40
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41 message_handle(&dlg->msg, ev);
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42 }
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43
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44 static int
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45 update(struct mlk_action *act, unsigned int ticks)
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46 {
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47 struct dialog *dlg = act->data;
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48
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49 return message_update(&dlg->msg, ticks);
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50 }
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51
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52 static void
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53 draw(struct mlk_action *act)
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54 {
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55 struct dialog *dlg = act->data;
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56
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57 message_draw(&dlg->msg);
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58 }
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59
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60 static void
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61 end(struct mlk_action *act)
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62 {
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63 struct dialog *dlg = act->data;
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64
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65 if ((dlg->msg.flags & MESSAGE_FLAGS_QUESTION) && dlg->response)
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66 dlg->response(dlg, dlg->msg.index);
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67 }
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68
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69 struct mlk_action *
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70 dialog_init(struct dialog *dlg)
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71 {
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72 assert(dlg);
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73
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74 dlg->msg.x = QMX;
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75 dlg->msg.y = QMY;
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76 dlg->msg.w = QMW;
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77 dlg->msg.delay = QMD;
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78 dlg->msg.spacing = QMS;
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79
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80 message_start(&dlg->msg);
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81 message_query(&dlg->msg, NULL, &dlg->msg.h);
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82
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83 dlg->action.data = dlg;
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84 dlg->action.handle = handle;
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85 dlg->action.update = update;
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86 dlg->action.draw = draw;
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87 dlg->action.end = end;
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88
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89 return &dlg->action;
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90 }