[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 870 2006-04-25 09:59:58Z sam $ |
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| 7 | * |
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[268] | 8 | * This library is free software; you can redistribute it and/or |
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[522] | 9 | * modify it under the terms of the Do What The Fuck You Want To |
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| 10 | * Public License, Version 2, as published by Sam Hocevar. See |
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| 11 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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[151] | 12 | */ |
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| 13 | |
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[769] | 14 | /* |
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[268] | 15 | * This file contains box drawing functions, both filled and outline. |
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[205] | 16 | */ |
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| 17 | |
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[151] | 18 | #include "config.h" |
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[859] | 19 | #include "common.h" |
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[151] | 20 | |
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[568] | 21 | #if !defined(__KERNEL__) |
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| 22 | # include <stdlib.h> |
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| 23 | #endif |
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[151] | 24 | |
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[524] | 25 | #include "cucul.h" |
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| 26 | #include "cucul_internals.h" |
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[151] | 27 | |
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[773] | 28 | /** \brief Draw a box on the canvas using the given character. |
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[257] | 29 | * |
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[870] | 30 | * This function never fails. |
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| 31 | * |
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[811] | 32 | * \param cv The handle to the libcucul canvas. |
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[773] | 33 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 34 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 35 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 36 | * \param y2 Y coordinate of the lower-right corner of the box. |
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| 37 | * \param str UTF-8 string containing the character to use to draw the box. |
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[870] | 38 | * \return This function always returns 0. |
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[257] | 39 | */ |
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[870] | 40 | int cucul_draw_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2, |
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| 41 | char const *str) |
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[151] | 42 | { |
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[811] | 43 | cucul_draw_line(cv, x1, y1, x1, y2, str); |
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| 44 | cucul_draw_line(cv, x1, y2, x2, y2, str); |
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| 45 | cucul_draw_line(cv, x2, y2, x2, y1, str); |
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| 46 | cucul_draw_line(cv, x2, y1, x1, y1, str); |
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[870] | 47 | |
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| 48 | return 0; |
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[151] | 49 | } |
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| 50 | |
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[773] | 51 | /** \brief Draw a thin box on the canvas. |
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[257] | 52 | * |
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[870] | 53 | * This function never fails. |
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| 54 | * |
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[811] | 55 | * \param cv The handle to the libcucul canvas. |
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[773] | 56 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 57 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 58 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 59 | * \param y2 Y coordinate of the lower-right corner of the box. |
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[870] | 60 | * \return This function always returns 0. |
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[257] | 61 | */ |
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[870] | 62 | int cucul_draw_thin_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2) |
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[151] | 63 | { |
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| 64 | int x, y, xmax, ymax; |
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| 65 | |
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| 66 | if(x1 > x2) |
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| 67 | { |
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| 68 | int tmp = x1; |
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| 69 | x1 = x2; x2 = tmp; |
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| 70 | } |
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| 71 | |
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| 72 | if(y1 > y2) |
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| 73 | { |
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| 74 | int tmp = y1; |
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| 75 | y1 = y2; y2 = tmp; |
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| 76 | } |
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| 77 | |
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[811] | 78 | xmax = cv->width - 1; |
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| 79 | ymax = cv->height - 1; |
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[151] | 80 | |
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| 81 | if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax) |
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[870] | 82 | return 0; |
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[151] | 83 | |
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| 84 | /* Draw edges */ |
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| 85 | if(y1 >= 0) |
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| 86 | for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++) |
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[811] | 87 | _cucul_putchar32(cv, x, y1, (uint32_t)'-'); |
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[151] | 88 | |
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[153] | 89 | if(y2 <= ymax) |
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[151] | 90 | for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++) |
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[811] | 91 | _cucul_putchar32(cv, x, y2, (uint32_t)'-'); |
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[151] | 92 | |
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| 93 | if(x1 >= 0) |
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| 94 | for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++) |
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[811] | 95 | _cucul_putchar32(cv, x1, y, (uint32_t)'|'); |
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[151] | 96 | |
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[153] | 97 | if(x2 <= xmax) |
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[151] | 98 | for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++) |
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[811] | 99 | _cucul_putchar32(cv, x2, y, (uint32_t)'|'); |
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[151] | 100 | |
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| 101 | /* Draw corners */ |
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| 102 | if(x1 >= 0 && y1 >= 0) |
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[811] | 103 | _cucul_putchar32(cv, x1, y1, (uint32_t)','); |
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[151] | 104 | |
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| 105 | if(x1 >= 0 && y2 <= ymax) |
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[811] | 106 | _cucul_putchar32(cv, x1, y2, (uint32_t)'`'); |
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[151] | 107 | |
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| 108 | if(x2 <= xmax && y1 >= 0) |
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[811] | 109 | _cucul_putchar32(cv, x2, y1, (uint32_t)'.'); |
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[151] | 110 | |
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| 111 | if(x2 <= xmax && y2 <= ymax) |
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[811] | 112 | _cucul_putchar32(cv, x2, y2, (uint32_t)'\''); |
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[870] | 113 | |
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| 114 | return 0; |
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[151] | 115 | } |
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| 116 | |
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[773] | 117 | /** \brief Fill a box on the canvas using the given character. |
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[257] | 118 | * |
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[870] | 119 | * This function never fails. |
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| 120 | * |
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[811] | 121 | * \param cv The handle to the libcucul canvas. |
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[773] | 122 | * \param x1 X coordinate of the upper-left corner of the box. |
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| 123 | * \param y1 Y coordinate of the upper-left corner of the box. |
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| 124 | * \param x2 X coordinate of the lower-right corner of the box. |
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| 125 | * \param y2 Y coordinate of the lower-right corner of the box. |
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| 126 | * \param str UTF-8 string containing the character to fill the box with. |
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[870] | 127 | * \return This function always returns 0. |
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[257] | 128 | */ |
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[870] | 129 | int cucul_fill_box(cucul_canvas_t *cv, int x1, int y1, int x2, int y2, |
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| 130 | char const *str) |
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[151] | 131 | { |
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| 132 | int x, y, xmax, ymax; |
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[810] | 133 | uint32_t ch; |
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[151] | 134 | |
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| 135 | if(x1 > x2) |
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| 136 | { |
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| 137 | int tmp = x1; |
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| 138 | x1 = x2; x2 = tmp; |
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| 139 | } |
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| 140 | |
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| 141 | if(y1 > y2) |
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| 142 | { |
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| 143 | int tmp = y1; |
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| 144 | y1 = y2; y2 = tmp; |
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| 145 | } |
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| 146 | |
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[811] | 147 | xmax = cv->width - 1; |
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| 148 | ymax = cv->height - 1; |
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[151] | 149 | |
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| 150 | if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax) |
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[870] | 151 | return 0; |
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[151] | 152 | |
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| 153 | if(x1 < 0) x1 = 0; |
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| 154 | if(y1 < 0) y1 = 0; |
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| 155 | if(x2 > xmax) x2 = xmax; |
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| 156 | if(y2 > ymax) y2 = ymax; |
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| 157 | |
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[810] | 158 | ch = _cucul_utf8_to_utf32(str); |
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[678] | 159 | |
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[151] | 160 | for(y = y1; y <= y2; y++) |
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| 161 | for(x = x1; x <= x2; x++) |
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[811] | 162 | _cucul_putchar32(cv, x, y, ch); |
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[870] | 163 | |
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| 164 | return 0; |
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[151] | 165 | } |
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| 166 | |
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