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Rev | Author | Line No. | Line |
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1487 | cejka | 1 | /* |
2 | * Copyright (C) 2006 Josef Cejka |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1649 | cejka | 29 | /** @addtogroup console |
30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
1487 | cejka | 35 | #include <screenbuffer.h> |
36 | #include <malloc.h> |
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37 | #include <unistd.h> |
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38 | |||
1525 | cejka | 39 | /** Store one character to screenbuffer. Its position is determined by scr->position_x and scr->position_y. |
40 | * @param scr screenbuffer |
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41 | * @param c stored character |
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1487 | cejka | 42 | */ |
1525 | cejka | 43 | void screenbuffer_putchar(screenbuffer_t *scr, char c) |
1487 | cejka | 44 | { |
45 | keyfield_t *field; |
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46 | |||
47 | field = get_field_at(scr, scr->position_x, scr->position_y); |
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48 | |||
49 | field->character = c; |
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50 | field->style = scr->style; |
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51 | } |
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52 | |||
1525 | cejka | 53 | /** Initilize screenbuffer. Allocate space for screen content in accordance to given size. |
54 | * @param scr initialized screenbuffer |
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1526 | cejka | 55 | * @param size_x width in characters |
56 | * @param size_y height in characters |
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57 | * @return pointer to screenbuffer (same as scr parameter) or NULL |
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1525 | cejka | 58 | */ |
1487 | cejka | 59 | screenbuffer_t *screenbuffer_init(screenbuffer_t *scr, int size_x, int size_y) |
60 | { |
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61 | if ((scr->buffer = (keyfield_t *)malloc(sizeof(keyfield_t) * size_x * size_y)) == NULL) { |
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62 | return NULL; |
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63 | } |
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64 | |||
65 | scr->size_x = size_x; |
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66 | scr->size_y = size_y; |
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1553 | palkovsky | 67 | scr->style.fg_color = DEFAULT_FOREGROUND; |
68 | scr->style.bg_color = DEFAULT_BACKGROUND; |
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1575 | cejka | 69 | scr->is_cursor_visible = 1; |
1497 | cejka | 70 | |
71 | screenbuffer_clear(scr); |
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72 | |||
1487 | cejka | 73 | return scr; |
74 | } |
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75 | |||
1526 | cejka | 76 | /** Clear screenbuffer. |
77 | * @param scr screenbuffer |
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78 | */ |
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1487 | cejka | 79 | void screenbuffer_clear(screenbuffer_t *scr) |
80 | { |
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81 | unsigned int i; |
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82 | |||
1497 | cejka | 83 | for (i = 0; i < (scr->size_x * scr->size_y); i++) { |
1487 | cejka | 84 | scr->buffer[i].character = ' '; |
85 | scr->buffer[i].style = scr->style; |
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86 | } |
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87 | |||
88 | scr->top_line = 0; |
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89 | scr->position_y = 0; |
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90 | scr->position_x = 0; |
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91 | } |
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92 | |||
1526 | cejka | 93 | /** Clear one buffer line. |
1487 | cejka | 94 | * @param scr |
95 | * @param line One buffer line (not a screen line!) |
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96 | */ |
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97 | void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line) |
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98 | { |
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99 | unsigned int i; |
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100 | |||
101 | for (i = 0; i < scr->size_x; i++) { |
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102 | scr->buffer[i + line*scr->size_x].character = ' '; |
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103 | scr->buffer[i + line*scr->size_x].style = scr->style; |
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104 | } |
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105 | } |
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106 | |||
1526 | cejka | 107 | /** Copy content buffer from screenbuffer to given memory. |
108 | * @param scr source screenbuffer |
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109 | * @param dest destination |
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110 | */ |
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1487 | cejka | 111 | void screenbuffer_copy_buffer(screenbuffer_t *scr, keyfield_t *dest) |
112 | { |
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113 | unsigned int i; |
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114 | |||
115 | for (i = 0; i < scr->size_x * scr->size_y; i++) { |
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116 | dest[i] = scr->buffer[i]; |
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117 | } |
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118 | } |
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119 | |||
1526 | cejka | 120 | /** Set new cursor position in screenbuffer. |
121 | * @param scr |
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122 | * @param x |
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123 | * @param y |
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124 | */ |
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1487 | cejka | 125 | void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y) |
126 | { |
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127 | scr->position_x = x % scr->size_x; |
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1525 | cejka | 128 | scr->position_y = y % scr->size_y; |
1487 | cejka | 129 | } |
130 | |||
1526 | cejka | 131 | /** Set new style. |
132 | * @param scr |
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133 | * @param fg_color |
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134 | * @param bg_color |
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135 | */ |
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1525 | cejka | 136 | void screenbuffer_set_style(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color) |
137 | { |
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138 | scr->style.fg_color = fg_color; |
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139 | scr->style.bg_color = bg_color; |
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140 | } |
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141 | |||
1649 | cejka | 142 | |
143 | /** @} |
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144 | */ |
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145 |