Mercurial > molko
annotate libmlk-ui/mlk/ui/label.c @ 505:6100c643dba0
ui: finally ditch theme
author | David Demelier <markand@malikania.fr> |
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date | Wed, 01 Mar 2023 16:24:07 +0100 |
parents | 52a305833381 |
children | e205625015ba |
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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) 2020-2023 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 #include <string.h> |
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21 |
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22 #include <mlk/core/font.h> |
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23 #include <mlk/core/panic.h> |
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24 #include <mlk/core/texture.h> |
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25 |
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26 #include "label.h" |
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27 #include "ui.h" |
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28 |
504 | 29 #define STYLE_INVOKE(s, f, ...) \ |
30 do { \ | |
31 if (s && s->f) \ | |
32 s->f(s, __VA_ARGS__); \ | |
33 else if (mlk_label_style.f) \ | |
34 mlk_label_style.f(s ? s : &mlk_label_style, __VA_ARGS__); \ | |
35 } while (0) | |
36 | |
37 static inline struct mlk_font * | |
38 style_font(struct mlk_label_style *style) | |
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39 { |
504 | 40 if (style && style->text_font) |
41 return style->text_font; | |
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42 |
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43 return mlk_ui_fonts[MLK_UI_FONT_INTERFACE]; |
504 | 44 } |
45 | |
46 static void | |
47 draw(struct mlk_label_style *style, const struct mlk_label *label) | |
48 { | |
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49 struct mlk_font *font; |
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50 struct mlk_texture tex; |
486 | 51 int err; |
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52 |
504 | 53 font = style_font(style); |
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54 |
504 | 55 if ((err = mlk_font_render(font, &tex, label->text, style->text_color)) < 0) |
486 | 56 mlk_panic(err); |
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57 |
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58 mlk_texture_draw(&tex, label->x, label->y); |
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59 mlk_texture_finish(&tex); |
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60 } |
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61 |
504 | 62 struct mlk_label_style mlk_label_style = { |
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63 .text_color = 0x000000ff, |
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64 .draw = draw |
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65 }; |
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66 |
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67 struct mlk_label_style mlk_label_style_selected = { |
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68 .text_color = 0x7da42dff, |
504 | 69 .draw = draw |
70 }; | |
71 | |
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72 void |
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73 mlk_label_init(struct mlk_label *label) |
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74 { |
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75 assert(mlk_label_ok(label)); |
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76 |
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77 STYLE_INVOKE(label->style, init, label); |
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78 } |
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79 |
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80 int |
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81 mlk_label_ok(const struct mlk_label *label) |
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82 { |
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83 return label && label->text && strlen(label->text) > 0; |
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84 } |
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85 |
504 | 86 int |
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87 mlk_label_query(const struct mlk_label *label, unsigned int *w, unsigned int *h) |
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88 { |
504 | 89 assert(mlk_label_ok(label)); |
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90 |
504 | 91 struct mlk_font *font; |
486 | 92 int err; |
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93 |
504 | 94 font = style_font(label->style); |
95 | |
96 if ((err = mlk_font_query(font, label->text, w, h)) < 0) | |
97 return err; | |
98 | |
99 return err; | |
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100 } |
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101 |
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102 void |
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103 mlk_label_draw(const struct mlk_label *label) |
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104 { |
504 | 105 assert(mlk_label_ok(label)); |
106 | |
107 STYLE_INVOKE(label->style, draw, label); | |
108 } | |
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109 |
504 | 110 void |
111 mlk_label_finish(struct mlk_label *label) | |
112 { | |
113 assert(mlk_label_ok(label)); | |
114 | |
115 STYLE_INVOKE(label->style, finish, label); | |
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116 } |