[151] | 1 | /* |
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[672] | 2 | * libcucul Canvas for ultrafast compositing of Unicode letters |
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[527] | 3 | * Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org> |
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[268] | 4 | * All Rights Reserved |
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[151] | 5 | * |
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[769] | 6 | * $Id: box.c 1462 2006-12-12 01:53:54Z sam $ |
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| 7 | * |
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[1462] | 8 | * This library is free software. It comes without any warranty, to |
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[1452] | 9 | * the extent permitted by applicable law. You can redistribute it |
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| 10 | * and/or modify it under the terms of the Do What The Fuck You Want |
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| 11 | * To Public License, Version 2, as published by Sam Hocevar. See |
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[522] | 12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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[151] | 13 | */ |
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| 14 | |
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[769] | 15 | /* |
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[268] | 16 | * This file contains box drawing functions, both filled and outline. |
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[205] | 17 | */ |
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| 18 | |
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[151] | 19 | #include "config.h" |
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[859] | 20 | #include "common.h" |
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[151] | 21 | |
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[568] | 22 | #if !defined(__KERNEL__) |
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| 23 | # include <stdlib.h> |
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| 24 | #endif |
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[151] | 25 | |
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[524] | 26 | #include "cucul.h" |
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| 27 | #include "cucul_internals.h" |
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[151] | 28 | |
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[773] | 29 | /** \brief Draw a box on the canvas using the given character. |
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[257] | 30 | * |
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[870] | 31 | * This function never fails. |
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| 32 | * |
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[811] | 33 | * \param cv The handle to the libcucul canvas. |
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[773] | 34 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 35 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 36 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 37 | * \param y2 Y coordinate of the lower-right corner of the box. |
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[1330] | 38 | * \param ch UTF-32 character to be used to draw the box. |
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[870] | 39 | * \return This function always returns 0. |
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[257] | 40 | */ |
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[870] | 41 | int cucul_draw_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2, |
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[1330] | 42 | unsigned long int ch) |
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[151] | 43 | { |
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[1330] | 44 | cucul_draw_line(cv, x1, y1, x1, y2, ch); |
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| 45 | cucul_draw_line(cv, x1, y2, x2, y2, ch); |
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| 46 | cucul_draw_line(cv, x2, y2, x2, y1, ch); |
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| 47 | cucul_draw_line(cv, x2, y1, x1, y1, ch); |
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[870] | 48 | |
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| 49 | return 0; |
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[151] | 50 | } |
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| 51 | |
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[773] | 52 | /** \brief Draw a thin box on the canvas. |
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[257] | 53 | * |
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[870] | 54 | * This function never fails. |
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| 55 | * |
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[811] | 56 | * \param cv The handle to the libcucul canvas. |
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[773] | 57 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 58 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 59 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 60 | * \param y2 Y coordinate of the lower-right corner of the box. |
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[870] | 61 | * \return This function always returns 0. |
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[257] | 62 | */ |
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[870] | 63 | int cucul_draw_thin_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2) |
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[151] | 64 | { |
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| 65 | int x, y, xmax, ymax; |
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| 66 | |
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| 67 | if(x1 > x2) |
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| 68 | { |
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| 69 | int tmp = x1; |
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| 70 | x1 = x2; x2 = tmp; |
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| 71 | } |
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| 72 | |
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| 73 | if(y1 > y2) |
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| 74 | { |
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| 75 | int tmp = y1; |
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| 76 | y1 = y2; y2 = tmp; |
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| 77 | } |
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| 78 | |
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[811] | 79 | xmax = cv->width - 1; |
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| 80 | ymax = cv->height - 1; |
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[151] | 81 | |
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| 82 | if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax) |
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[870] | 83 | return 0; |
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[151] | 84 | |
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| 85 | /* Draw edges */ |
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| 86 | if(y1 >= 0) |
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| 87 | for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++) |
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[1347] | 88 | cucul_put_char(cv, x, y1, '-'); |
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[151] | 89 | |
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[153] | 90 | if(y2 <= ymax) |
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[151] | 91 | for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++) |
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[1347] | 92 | cucul_put_char(cv, x, y2, '-'); |
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[151] | 93 | |
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| 94 | if(x1 >= 0) |
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| 95 | for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++) |
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[1347] | 96 | cucul_put_char(cv, x1, y, '|'); |
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[151] | 97 | |
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[153] | 98 | if(x2 <= xmax) |
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[151] | 99 | for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++) |
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[1347] | 100 | cucul_put_char(cv, x2, y, '|'); |
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[151] | 101 | |
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| 102 | /* Draw corners */ |
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[1347] | 103 | cucul_put_char(cv, x1, y1, ','); |
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| 104 | cucul_put_char(cv, x1, y2, '`'); |
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| 105 | cucul_put_char(cv, x2, y1, '.'); |
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| 106 | cucul_put_char(cv, x2, y2, '\''); |
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[151] | 107 | |
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[1329] | 108 | return 0; |
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| 109 | } |
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[151] | 110 | |
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[1329] | 111 | /** \brief Draw a box on the canvas using CP437 characters. |
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| 112 | * |
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| 113 | * This function never fails. |
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| 114 | * |
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| 115 | * \param cv The handle to the libcucul canvas. |
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| 116 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 117 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 118 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 119 | * \param y2 Y coordinate of the lower-right corner of the box. |
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| 120 | * \return This function always returns 0. |
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| 121 | */ |
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| 122 | int cucul_draw_cp437_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2) |
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| 123 | { |
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| 124 | int x, y, xmax, ymax; |
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[151] | 125 | |
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[1329] | 126 | if(x1 > x2) |
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| 127 | { |
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| 128 | int tmp = x1; |
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| 129 | x1 = x2; x2 = tmp; |
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| 130 | } |
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[870] | 131 | |
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[1329] | 132 | if(y1 > y2) |
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| 133 | { |
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| 134 | int tmp = y1; |
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| 135 | y1 = y2; y2 = tmp; |
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| 136 | } |
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| 137 | |
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| 138 | xmax = cv->width - 1; |
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| 139 | ymax = cv->height - 1; |
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| 140 | |
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| 141 | if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax) |
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| 142 | return 0; |
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| 143 | |
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| 144 | /* Draw edges */ |
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| 145 | if(y1 >= 0) |
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| 146 | for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++) |
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[1347] | 147 | cucul_put_char(cv, x, y1, 0x2500); /* ─ */ |
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[1329] | 148 | |
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| 149 | if(y2 <= ymax) |
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| 150 | for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++) |
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[1347] | 151 | cucul_put_char(cv, x, y2, 0x2500); /* ─ */ |
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[1329] | 152 | |
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| 153 | if(x1 >= 0) |
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| 154 | for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++) |
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[1347] | 155 | cucul_put_char(cv, x1, y, 0x2502); /* │ */ |
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[1329] | 156 | |
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| 157 | if(x2 <= xmax) |
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| 158 | for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++) |
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[1347] | 159 | cucul_put_char(cv, x2, y, 0x2502); /* │ */ |
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[1329] | 160 | |
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| 161 | /* Draw corners */ |
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[1347] | 162 | cucul_put_char(cv, x1, y1, 0x250c); /* ┌ */ |
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| 163 | cucul_put_char(cv, x1, y2, 0x2514); /* └ */ |
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| 164 | cucul_put_char(cv, x2, y1, 0x2510); /* ┐ */ |
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| 165 | cucul_put_char(cv, x2, y2, 0x2518); /* ┘ */ |
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[1329] | 166 | |
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[870] | 167 | return 0; |
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[151] | 168 | } |
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| 169 | |
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[773] | 170 | /** \brief Fill a box on the canvas using the given character. |
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[257] | 171 | * |
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[870] | 172 | * This function never fails. |
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| 173 | * |
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[811] | 174 | * \param cv The handle to the libcucul canvas. |
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[773] | 175 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 176 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 177 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 178 | * \param y2 Y coordinate of the lower-right corner of the box. |
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[1330] | 179 | * \param ch UTF-32 character to be used to draw the box. |
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[870] | 180 | * \return This function always returns 0. |
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[257] | 181 | */ |
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[870] | 182 | int cucul_fill_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2, |
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[1330] | 183 | unsigned long int ch) |
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[151] | 184 | { |
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| 185 | int x, y, xmax, ymax; |
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| 186 | |
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| 187 | if(x1 > x2) |
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| 188 | { |
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| 189 | int tmp = x1; |
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| 190 | x1 = x2; x2 = tmp; |
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| 191 | } |
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| 192 | |
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| 193 | if(y1 > y2) |
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| 194 | { |
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| 195 | int tmp = y1; |
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| 196 | y1 = y2; y2 = tmp; |
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| 197 | } |
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| 198 | |
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[811] | 199 | xmax = cv->width - 1; |
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| 200 | ymax = cv->height - 1; |
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[151] | 201 | |
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| 202 | if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax) |
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[870] | 203 | return 0; |
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[151] | 204 | |
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| 205 | if(x1 < 0) x1 = 0; |
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| 206 | if(y1 < 0) y1 = 0; |
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| 207 | if(x2 > xmax) x2 = xmax; |
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| 208 | if(y2 > ymax) y2 = ymax; |
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| 209 | |
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| 210 | for(y = y1; y <= y2; y++) |
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| 211 | for(x = x1; x <= x2; x++) |
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[1347] | 212 | cucul_put_char(cv, x, y, ch); |
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[870] | 213 | |
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| 214 | return 0; |
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[151] | 215 | } |
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| 216 | |
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