Mercurial > molko
annotate src/libmlk-core/core/font.c @ 320:8f9937403749
misc: improve loading of data
author | David Demelier <markand@malikania.fr> |
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date | Fri, 01 Oct 2021 20:30:00 +0200 |
parents | libmlk-core/core/font.c@d01e83210ca2 |
children | 979960e65f76 |
rev | line source |
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1 /* |
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2 * font.c -- basic font management |
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3 * |
314 | 4 * Copyright (c) 2020-2021 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 "error.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 font_open(struct 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))) |
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37 return errorf("%s", SDL_GetError()); |
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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 font_openmem(struct font *font, const void *buffer, size_t buflen, unsigned int size) |
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44 { |
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45 assert(font); |
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46 assert(buffer); |
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47 |
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48 SDL_RWops *ops; |
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49 |
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50 if (!(ops = SDL_RWFromConstMem(buffer, buflen)) || |
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51 (!(font->handle = TTF_OpenFontRW(ops, 1, size)))) |
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52 return errorf("%s", SDL_GetError()); |
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53 |
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54 return 0; |
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55 } |
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56 |
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57 int |
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58 font_ok(const struct font *font) |
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59 { |
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60 return font && font->handle; |
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61 } |
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62 |
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63 int |
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64 font_render(struct font *font, struct texture *tex, const char *text, unsigned int color) |
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65 { |
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66 assert(font_ok(font)); |
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67 assert(text); |
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68 |
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69 SDL_Color fg = { |
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70 .r = COLOR_R(color), |
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71 .g = COLOR_G(color), |
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72 .b = COLOR_B(color), |
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73 .a = COLOR_A(color) |
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74 }; |
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75 SDL_Surface *surface; |
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76 SDL_Surface *(*func)(TTF_Font *, const char *, SDL_Color); |
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77 |
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78 switch (font->style) { |
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79 case FONT_STYLE_ANTIALIASED: |
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80 func = TTF_RenderUTF8_Blended; |
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81 break; |
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82 default: |
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83 func = TTF_RenderUTF8_Solid; |
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84 break; |
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85 } |
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86 |
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87 if (!(surface = func(font->handle, text, fg))) |
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88 return errorf("%s", SDL_GetError()); |
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89 |
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90 return texture_from_surface(tex, surface); |
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91 } |
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92 |
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93 unsigned int |
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94 font_height(const struct font *font) |
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95 { |
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96 assert(font_ok(font)); |
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97 |
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98 return TTF_FontHeight(font->handle); |
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99 } |
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100 |
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101 int |
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102 font_query(const struct font *font, const char *text, unsigned int *w, unsigned int *h) |
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103 { |
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104 assert(font_ok(font)); |
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105 assert(text); |
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106 |
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107 if (w) |
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108 *w = 0; |
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109 if (h) |
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110 *h = 0; |
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111 |
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112 if (TTF_SizeUTF8(font->handle, text, (int *)w, (int *)h) != 0) |
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113 return errorf("%s", SDL_GetError()); |
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114 |
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115 return 0; |
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116 } |
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117 |
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118 void |
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119 font_finish(struct font *font) |
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120 { |
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121 assert(font); |
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122 |
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123 if (font->handle) |
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124 TTF_CloseFont(font->handle); |
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125 |
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core: add font_box function, closes #2495
David Demelier <markand@malikania.fr>
parents:
121
diff
changeset
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126 memset(font, 0, sizeof (*font)); |
10
c91c3272101b
core: implement fonts, closes #2444
David Demelier <markand@malikania.fr>
parents:
diff
changeset
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127 } |