Mercurial > molko
annotate libmlk-core/mlk/core/font.c @ 545:27303e9402de
core: introduce mlk_alloc_expand
author | David Demelier <markand@malikania.fr> |
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date | Sun, 05 Mar 2023 22:14:02 +0100 |
parents | 338a4436e255 |
children | c7664b679a95 |
rev | line source |
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1 /* |
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2 * font.c -- basic font management |
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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 <SDL_ttf.h> |
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23 |
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24 #include "color.h" |
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25 #include "err.h" |
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26 #include "font.h" |
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27 #include "texture_p.h" |
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28 #include "util.h" |
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29 |
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30 int |
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31 mlk_font_open(struct mlk_font *font, const char *path, unsigned int size) |
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32 { |
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33 assert(font); |
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34 assert(path); |
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35 |
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36 if (!(font->handle = TTF_OpenFont(path, size))) |
437 | 37 return MLK_ERR_SDL; |
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38 |
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39 return 0; |
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40 } |
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41 |
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42 int |
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43 mlk_font_openmem(struct mlk_font *font, |
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44 const void *buffer, |
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45 size_t buflen, |
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46 unsigned int size) |
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47 { |
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48 assert(font); |
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49 assert(buffer); |
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50 |
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51 SDL_RWops *ops; |
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52 |
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53 if (!(ops = SDL_RWFromConstMem(buffer, buflen)) || |
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54 (!(font->handle = TTF_OpenFontRW(ops, 1, size)))) |
437 | 55 return MLK_ERR_SDL; |
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56 |
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57 return 0; |
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58 } |
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59 |
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60 int |
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61 mlk_font_ok(const struct mlk_font *font) |
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62 { |
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63 return font && font->handle; |
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64 } |
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65 |
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66 int |
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67 mlk_font_render(struct mlk_font *font, struct mlk_texture *tex, const char *text, unsigned long color) |
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68 { |
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69 assert(mlk_font_ok(font)); |
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70 assert(text); |
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71 |
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72 SDL_Color fg = { |
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73 .r = MLK_COLOR_R(color), |
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74 .g = MLK_COLOR_G(color), |
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75 .b = MLK_COLOR_B(color), |
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76 .a = MLK_COLOR_A(color) |
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77 }; |
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78 SDL_Surface *surface; |
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79 SDL_Surface *(*func)(TTF_Font *, const char *, SDL_Color); |
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80 |
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81 switch (font->style) { |
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82 case MLK_FONT_STYLE_ANTIALIASED: |
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83 func = TTF_RenderUTF8_Blended; |
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84 break; |
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85 default: |
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86 func = TTF_RenderUTF8_Solid; |
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87 break; |
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88 } |
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89 |
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90 if (!(surface = func(font->handle, text, fg))) |
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92 |
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93 return mlk__texture_from_surface(tex, surface); |
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94 } |
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95 |
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96 unsigned int |
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97 mlk_font_height(const struct mlk_font *font) |
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98 { |
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99 assert(mlk_font_ok(font)); |
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100 |
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101 return TTF_FontHeight(font->handle); |
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102 } |
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103 |
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104 int |
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105 mlk_font_query(const struct mlk_font *font, const char *text, unsigned int *w, unsigned int *h) |
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106 { |
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107 assert(mlk_font_ok(font)); |
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108 assert(text); |
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109 |
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110 if (w) |
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111 *w = 0; |
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112 if (h) |
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113 *h = 0; |
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114 |
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115 if (TTF_SizeUTF8(font->handle, text, (int *)w, (int *)h) != 0) |
437 | 116 return MLK_ERR_SDL; |
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117 |
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118 return 0; |
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119 } |
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120 |
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121 void |
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122 mlk_font_finish(struct mlk_font *font) |
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123 { |
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124 assert(font); |
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125 |
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126 if (font->handle) { |
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127 TTF_CloseFont(font->handle); |
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128 font->handle = NULL; |
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parents:
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changeset
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129 } |
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c91c3272101b
core: implement fonts, closes #2444
David Demelier <markand@malikania.fr>
parents:
diff
changeset
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130 } |