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annotate src/libmlk-ui/ui/label.c @ 409:6011ad866e99

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ui: delete action functions The handling of actions is done without taking care of the return value which make it impossible to detect UI elements since it's a immediate mode like implementation. Users are encouraged to write code like instead: ``` if (button_handle(&b, &ev)) { // Do something. } ```
author David Demelier <markand@malikania.fr>
date Fri, 09 Sep 2022 09:27:17 +0200
parents c9769a77ad8c
children 8f59201dc76b
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1 /*
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2 * label.c -- GUI label
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3 *
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4 * Copyright (c) 2020-2022 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 #include <string.h>
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21
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22 #include <core/font.h>
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23 #include <core/panic.h>
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24 #include <core/texture.h>
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25
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26 #include "label.h"
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27 #include "theme.h"
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28
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29 void
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30 label_draw_default(const struct theme *t, const struct label *label)
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31 {
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32 assert(t);
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33 assert(label);
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34
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35 struct font *font;
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36 struct texture tex;
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37 unsigned long color;
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38
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39 font = label->flags & LABEL_FLAGS_IMPORTANT
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40 ? t->fonts[THEME_FONT_IMPORTANT]
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41 : t->fonts[THEME_FONT_INTERFACE];
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42 color = label->flags & LABEL_FLAGS_SELECTED
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43 ? t->colors[THEME_COLOR_SELECTED]
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44 : t->colors[THEME_COLOR_NORMAL];
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45
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46 /* Shadow text, only if enabled. */
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47 if (label->flags & LABEL_FLAGS_SHADOW) {
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48 if (font_render(font, &tex, label->text, t->colors[THEME_COLOR_SHADOW]) < 0)
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49 panic();
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50
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51 texture_draw(&tex, label->x + 1, label->y + 1);
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52 texture_finish(&tex);
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53 }
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54
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55 /* Normal text. */
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56 if (font_render(font, &tex, label->text, color) < 0)
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57 panic();
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58
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59 texture_draw(&tex, label->x, label->y);
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60 texture_finish(&tex);
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61 }
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63 int
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64 label_ok(const struct label *label)
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65 {
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66 return label && label->text && strlen(label->text) > 0;
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67 }
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69 void
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70 label_query(const struct label *label, unsigned int *w, unsigned int *h)
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71 {
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72 assert(label);
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73 assert(label->text);
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74
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75 const struct theme *t = label->theme ? label->theme : theme_default();
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76 const struct font *f = label->flags & LABEL_FLAGS_IMPORTANT
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77 ? t->fonts[THEME_FONT_IMPORTANT]
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78 : t->fonts[THEME_FONT_INTERFACE];
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80 if (font_query(f, label->text, w, h) < 0)
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81 panic();
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82 }
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83
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84 void
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85 label_draw(const struct label *label)
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86 {
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87 assert(label);
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88 assert(label->text);
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89
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90 theme_draw_label(label->theme, label);
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91 }