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annotate libmlk-core/core/painter.h @ 292:08ab73b32832

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misc: add extern "C" {} blocks for C++ friends
author David Demelier <markand@malikania.fr>
date Fri, 05 Mar 2021 10:08:09 +0100
parents c4da052c0def
children 196264679079
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1 /*
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2 * painter.h -- basic drawing routines
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3 *
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4 * Copyright (c) 2020 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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19 #ifndef MOLKO_CORE_PAINTER_H
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20 #define MOLKO_CORE_PAINTER_H
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22 #include <stdbool.h>
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24 #include "core.h"
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26 struct texture;
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28 CORE_BEGIN_DECLS
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30 struct texture *
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31 painter_get_target(void);
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33 void
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34 painter_set_target(struct texture *tex);
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36 unsigned long
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37 painter_get_color(void);
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39 void
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40 painter_set_color(unsigned long color);
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42 void
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43 painter_draw_line(int x1, int y1, int x2, int y2);
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45 void
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46 painter_draw_point(int x, int y);
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48 void
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49 painter_draw_rectangle(int x, int y, unsigned int w, unsigned int h);
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51 void
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52 painter_draw_circle(int x, int y, int radius);
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54 void
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55 painter_clear(void);
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57 void
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58 painter_present(void);
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60 CORE_END_DECLS
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62 #define PAINTER_BEGIN(tex) \
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63 do { \
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64 struct texture *__current_texture__; \
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65 \
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66 __current_texture__ = painter_get_target(); \
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67 painter_set_target((tex))
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68
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69 #define PAINTER_END() \
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70 painter_set_target(__current_texture__); \
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71 } while (0)
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73 #endif /* !MOLKO_CORE_PAINTER_H */