1 | /* |
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2 | * libcaca Colour ASCII-Art library |
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3 | * Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org> |
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4 | * All Rights Reserved |
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5 | * |
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6 | * $Id: canvas.c 3448 2009-05-14 00:18:23Z sam $ |
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7 | * |
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8 | * This library is free software. It comes without any warranty, to |
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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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12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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13 | */ |
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14 | |
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15 | /* |
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16 | * This file contains the main functions used by \e libcaca applications |
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17 | * to initialise a drawing context. |
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18 | */ |
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19 | |
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20 | #include "config.h" |
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21 | |
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22 | #if !defined(__KERNEL__) |
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23 | # include <stdio.h> |
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24 | # include <stdlib.h> |
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25 | # include <string.h> |
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26 | # include <time.h> |
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27 | # include <sys/types.h> |
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28 | # if defined(HAVE_UNISTD_H) |
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29 | # include <unistd.h> |
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30 | # endif |
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31 | #endif |
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32 | |
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33 | #include "caca.h" |
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34 | #include "caca_internals.h" |
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35 | |
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36 | static int caca_resize(caca_canvas_t *, int, int); |
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37 | |
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38 | /** \brief Initialise a \e libcaca canvas. |
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39 | * |
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40 | * Initialise internal \e libcaca structures and the backend that will |
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41 | * be used for subsequent graphical operations. It must be the first |
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42 | * \e libcaca function to be called in a function. caca_free_canvas() |
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43 | * should be called at the end of the program to free all allocated resources. |
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44 | * |
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45 | * Both the cursor and the canvas' handle are initialised at the top-left |
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46 | * corner. |
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47 | * |
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48 | * If an error occurs, NULL is returned and \b errno is set accordingly: |
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49 | * - \c EINVAL Specified width or height is invalid. |
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50 | * - \c ENOMEM Not enough memory for the requested canvas size. |
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51 | * |
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52 | * \param width The desired canvas width |
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53 | * \param height The desired canvas height |
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54 | * \return A libcaca canvas handle upon success, NULL if an error occurred. |
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55 | */ |
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56 | caca_canvas_t * caca_create_canvas(int width, int height) |
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57 | { |
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58 | caca_canvas_t *cv; |
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59 | |
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60 | if(width < 0 || height < 0) |
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61 | { |
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62 | seterrno(EINVAL); |
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63 | return NULL; |
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64 | } |
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65 | |
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66 | cv = malloc(sizeof(caca_canvas_t)); |
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67 | |
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68 | if(!cv) |
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69 | goto nomem; |
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70 | |
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71 | cv->refcount = 0; |
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72 | cv->autoinc = 0; |
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73 | cv->resize_callback = NULL; |
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74 | cv->resize_data = NULL; |
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75 | |
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76 | cv->frame = 0; |
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77 | cv->framecount = 1; |
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78 | cv->frames = malloc(sizeof(struct caca_frame)); |
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79 | if(!cv->frames) |
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80 | { |
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81 | free(cv); |
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82 | goto nomem; |
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83 | } |
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84 | |
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85 | cv->frames[0].width = cv->frames[0].height = 0; |
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86 | cv->frames[0].chars = NULL; |
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87 | cv->frames[0].attrs = NULL; |
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88 | cv->frames[0].x = cv->frames[0].y = 0; |
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89 | cv->frames[0].handlex = cv->frames[0].handley = 0; |
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90 | cv->frames[0].curattr = 0; |
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91 | cv->frames[0].name = strdup("frame#00000000"); |
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92 | |
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93 | _caca_load_frame_info(cv); |
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94 | caca_set_color_ansi(cv, CACA_DEFAULT, CACA_TRANSPARENT); |
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95 | |
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96 | cv->dirty_xmin = 0; |
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97 | cv->dirty_xmax = -1; |
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98 | cv->dirty_ymin = 0; |
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99 | cv->dirty_ymax = -1; |
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100 | |
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101 | cv->ff = NULL; |
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102 | |
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103 | if(caca_resize(cv, width, height) < 0) |
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104 | { |
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105 | int saved_errno = geterrno(); |
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106 | free(cv->frames[0].name); |
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107 | free(cv->frames); |
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108 | free(cv); |
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109 | seterrno(saved_errno); |
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110 | return NULL; |
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111 | } |
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112 | |
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113 | return cv; |
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114 | |
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115 | nomem: |
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116 | seterrno(ENOMEM); |
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117 | return NULL; |
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118 | } |
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119 | |
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120 | /** \brief Manage a canvas. |
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121 | * |
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122 | * Lock a canvas to prevent it from being resized. If non-NULL, |
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123 | * the \e callback function pointer will be called upon each |
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124 | * \e caca_set_canvas_size call and if the returned value is zero, the |
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125 | * canvas resize request will be denied. |
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126 | * |
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127 | * This function is only useful for display drivers such as the \e libcaca |
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128 | * library. |
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129 | * |
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130 | * If an error occurs, -1 is returned and \b errno is set accordingly: |
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131 | * - \c EBUSY The canvas is already being managed. |
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132 | * |
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133 | * \param cv A libcaca canvas. |
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134 | * \param callback An optional callback function pointer. |
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135 | * \param p The argument to be passed to \e callback. |
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136 | * \return 0 in case of success, -1 if an error occurred. |
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137 | */ |
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138 | int caca_manage_canvas(caca_canvas_t *cv, int (*callback)(void *), void *p) |
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139 | { |
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140 | if(cv->refcount) |
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141 | { |
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142 | seterrno(EBUSY); |
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143 | return -1; |
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144 | } |
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145 | |
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146 | cv->resize_callback = callback; |
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147 | cv->resize_data = p; |
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148 | cv->refcount = 1; |
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149 | |
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150 | return 0; |
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151 | } |
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152 | |
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153 | /** \brief unmanage a canvas. |
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154 | * |
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155 | * unlock a canvas previously locked by caca_manage_canvas(). for safety |
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156 | * reasons, the callback and callback data arguments must be the same as for |
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157 | * the caca_manage_canvas() call. |
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158 | * |
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159 | * this function is only useful for display drivers such as the \e libcaca |
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160 | * library. |
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161 | * |
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162 | * if an error occurs, -1 is returned and \b errno is set accordingly: |
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163 | * - \c einval the canvas is not managed, or the callback arguments do |
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164 | * not match. |
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165 | * |
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166 | * \param cv a libcaca canvas. |
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167 | * \param callback the \e callback argument previously passed to |
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168 | * caca_manage_canvas(). |
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169 | * \param p the \e p argument previously passed to caca_manage_canvas(). |
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170 | * \return 0 in case of success, -1 if an error occurred. |
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171 | */ |
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172 | int caca_unmanage_canvas(caca_canvas_t *cv, int (*callback)(void *), void *p) |
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173 | { |
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174 | if(!cv->refcount |
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175 | || cv->resize_callback != callback || cv->resize_data != p) |
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176 | { |
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177 | seterrno(EINVAL); |
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178 | return -1; |
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179 | } |
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180 | |
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181 | cv->refcount = 0; |
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182 | |
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183 | return 0; |
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184 | } |
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185 | |
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186 | /** \brief Resize a canvas. |
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187 | * |
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188 | * Set the canvas' width and height, in character cells. |
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189 | * |
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190 | * The contents of the canvas are preserved to the extent of the new |
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191 | * canvas size. Newly allocated character cells at the right and/or at |
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192 | * the bottom of the canvas are filled with spaces. |
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193 | * |
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194 | * If as a result of the resize the cursor coordinates fall outside the |
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195 | * new canvas boundaries, they are readjusted. For instance, if the |
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196 | * current X cursor coordinate is 11 and the requested width is 10, the |
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197 | * new X cursor coordinate will be 10. |
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198 | * |
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199 | * It is an error to try to resize the canvas if an output driver has |
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200 | * been attached to the canvas using caca_create_display(). You need to |
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201 | * remove the output driver using caca_free_display() before you can change |
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202 | * the canvas size again. However, the caca output driver can cause a |
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203 | * canvas resize through user interaction. See the caca_event() documentation |
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204 | * for more about this. |
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205 | * |
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206 | * If an error occurs, -1 is returned and \b errno is set accordingly: |
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207 | * - \c EINVAL Specified width or height is invalid. |
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208 | * - \c EBUSY The canvas is in use by a display driver and cannot be resized. |
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209 | * - \c ENOMEM Not enough memory for the requested canvas size. If this |
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210 | * happens, the canvas handle becomes invalid and should not be used. |
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211 | * |
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212 | * \param cv A libcaca canvas. |
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213 | * \param width The desired canvas width. |
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214 | * \param height The desired canvas height. |
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215 | * \return 0 in case of success, -1 if an error occurred. |
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216 | */ |
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217 | int caca_set_canvas_size(caca_canvas_t *cv, int width, int height) |
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218 | { |
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219 | if(width < 0 || height < 0) |
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220 | { |
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221 | seterrno(EINVAL); |
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222 | return -1; |
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223 | } |
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224 | |
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225 | if(cv->refcount && cv->resize_callback |
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226 | && !cv->resize_callback(cv->resize_data)) |
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227 | { |
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228 | seterrno(EBUSY); |
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229 | return -1; |
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230 | } |
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231 | |
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232 | return caca_resize(cv, width, height); |
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233 | } |
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234 | |
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235 | /** \brief Get the canvas width. |
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236 | * |
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237 | * Return the current canvas' width, in character cells. |
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238 | * |
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239 | * This function never fails. |
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240 | * |
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241 | * \param cv A libcaca canvas. |
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242 | * \return The canvas width. |
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243 | */ |
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244 | int caca_get_canvas_width(caca_canvas_t const *cv) |
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245 | { |
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246 | return cv->width; |
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247 | } |
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248 | |
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249 | /** \brief Get the canvas height. |
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250 | * |
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251 | * Returns the current canvas' height, in character cells. |
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252 | * |
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253 | * This function never fails. |
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254 | * |
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255 | * \param cv A libcaca canvas. |
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256 | * \return The canvas height. |
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257 | */ |
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258 | int caca_get_canvas_height(caca_canvas_t const *cv) |
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259 | { |
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260 | return cv->height; |
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261 | } |
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262 | |
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263 | /** \brief Get the canvas character array. |
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264 | * |
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265 | * Return the current canvas' internal character array. The array elements |
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266 | * consist in native endian 32-bit Unicode values as returned by |
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267 | * caca_get_char(). |
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268 | * |
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269 | * This function is only useful for display drivers such as the \e libcaca |
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270 | * library. |
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271 | * |
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272 | * This function never fails. |
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273 | * |
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274 | * \param cv A libcaca canvas. |
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275 | * \return The canvas character array. |
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276 | */ |
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277 | uint8_t const * caca_get_canvas_chars(caca_canvas_t const *cv) |
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278 | { |
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279 | return (uint8_t const *)cv->chars; |
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280 | } |
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281 | |
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282 | /** \brief Get the canvas attribute array. |
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283 | * |
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284 | * Returns the current canvas' internal attribute array. The array elements |
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285 | * consist in native endian 32-bit attribute values as returned by |
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286 | * caca_get_attr(). |
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287 | * |
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288 | * This function is only useful for display drivers such as the \e libcaca |
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289 | * library. |
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290 | * |
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291 | * This function never fails. |
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292 | * |
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293 | * \param cv A libcaca canvas. |
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294 | * \return The canvas attribute array. |
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295 | */ |
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296 | uint8_t const * caca_get_canvas_attrs(caca_canvas_t const *cv) |
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297 | { |
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298 | return (uint8_t const *)cv->attrs; |
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299 | } |
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300 | |
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301 | /** \brief Get a canvas's dirty rectangle. |
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302 | * |
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303 | * Get the canvas's dirty rectangle coordinates. The dirty rectangle is |
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304 | * the smallest area containing all the cells that have changed since it |
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305 | * was last reset. |
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306 | * |
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307 | * The dirty rectangle is used internally by display drivers to optimise |
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308 | * rendering by avoiding to redraw the whole screen. Once the display driver |
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309 | * has rendered the canvas, it resets the dirty rectangle. |
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310 | * |
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311 | * Values such that \b xmin > \b xmax or \b ymin > \b ymax indicate that |
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312 | * the dirty rectangle is empty. It means that the canvas's contents have |
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313 | * not changed since the dirty rectangle was last reset. |
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314 | * |
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315 | * FIXME: having only one dirty rectangle instead of a list of rectangles |
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316 | * is a severe limitation, but the potential gain does not yet look to be |
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317 | * worth the implementation complexity of a multiple-rectangle scheme. |
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318 | * |
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319 | * This function never fails. |
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320 | * |
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321 | * \param cv A libcaca canvas. |
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322 | * \param xmin A pointer to an integer where the leftmost edge of the |
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323 | * dirty rectangle will be stored. |
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324 | * \param xmax A pointer to an integer where the rightmost edge of the |
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325 | * dirty rectangle will be stored. |
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326 | * \param ymin A pointer to an integer where the topmost edge of the |
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327 | * dirty rectangle will be stored. |
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328 | * \param ymax A pointer to an integer where the bottommost edge of the |
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329 | * dirty rectangle will be stored. |
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330 | * \return This function always returns 0. |
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331 | */ |
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332 | int caca_get_dirty_rectangle(caca_canvas_t *cv, int *xmin, int *xmax, |
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333 | int *ymin, int *ymax) |
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334 | { |
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335 | *xmin = cv->dirty_xmin; |
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336 | *xmax = cv->dirty_xmax; |
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337 | *ymin = cv->dirty_ymin; |
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338 | *ymax = cv->dirty_ymax; |
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339 | |
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340 | return 0; |
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341 | } |
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342 | |
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343 | /** \brief Add a dirty rectangle to the canvas's dirty rectangle. |
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344 | * |
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345 | * Add an invalidating zone to the canvas's dirty rectangle. For more |
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346 | * information about the dirty rectangle, see caca_get_dirty_rectangle(). |
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347 | * |
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348 | * This function may be useful to force refresh of a given zone of the |
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349 | * canvas even if the dirty rectangle tracking indicates that it is |
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350 | * unchanged. |
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351 | * |
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352 | * Values such that \b xmin > \b xmax or \b ymin > \b ymax indicate that |
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353 | * the dirty rectangle is empty. They will be silently ignored. |
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354 | * |
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355 | * This function never fails. |
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356 | * |
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357 | * \param cv A libcaca canvas. |
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358 | * \param xmin The leftmost edge of the additional dirty rectangle. |
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359 | * \param xmax The rightmost edge of the additional dirty rectangle. |
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360 | * \param ymin The topmost edge of the additional dirty rectangle. |
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361 | * \param ymax The bottommost edge of the additional dirty rectangle. |
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362 | * \return This function always returns 0. |
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363 | */ |
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364 | int caca_add_dirty_rectangle(caca_canvas_t *cv, int xmin, int xmax, |
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365 | int ymin, int ymax) |
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366 | { |
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367 | /* Ignore empty rectangles. */ |
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368 | if(xmin > xmax || ymin > ymax) |
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369 | return 0; |
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370 | |
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371 | /* Ignore out-of-bounds rectangles. */ |
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372 | if(xmax < 0 || xmin >= cv->width || ymax < 0 || ymin >= cv->height) |
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373 | return 0; |
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374 | |
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375 | if(xmin < cv->dirty_xmin) |
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376 | cv->dirty_xmin = xmin; |
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377 | |
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378 | if(xmax > cv->dirty_xmax) |
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379 | cv->dirty_xmax = xmax; |
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380 | |
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381 | if(ymin < cv->dirty_ymin) |
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382 | cv->dirty_ymin = ymin; |
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383 | |
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384 | if(ymax > cv->dirty_ymax) |
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385 | cv->dirty_ymax = ymax; |
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386 | |
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387 | return 0; |
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388 | } |
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389 | |
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390 | /** \brief Set a canvas's dirty rectangle. |
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391 | * |
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392 | * Set the canvas's dirty rectangle coordinates. For more information |
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393 | * about the dirty rectangle, see caca_get_dirty_rectangle(). |
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394 | * |
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395 | * Values such that \b xmin > \b xmax or \b ymin > \b ymax indicate that |
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396 | * the dirty rectangle is empty. |
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397 | * |
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398 | * This function never fails. |
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399 | * |
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400 | * \param cv A libcaca canvas. |
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401 | * \param xmin The leftmost edge of the desired dirty rectangle. |
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402 | * \param xmax The rightmost edge of the desired dirty rectangle. |
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403 | * \param ymin The topmost edge of the desired dirty rectangle. |
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404 | * \param ymax The bottommost edge of the desired dirty rectangle. |
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405 | * \return This function always returns 0. |
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406 | */ |
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407 | int caca_set_dirty_rectangle(caca_canvas_t *cv, int xmin, int xmax, |
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408 | int ymin, int ymax) |
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409 | { |
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410 | /* Normalise values indicating an empty or out-of-bounds rectangle. */ |
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411 | if(xmin > xmax || ymin > ymax || |
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412 | xmax < 0 || xmin >= cv->width || ymax < 0 || ymin >= cv->height) |
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413 | { |
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414 | xmin = cv->width; |
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415 | xmax = -1; |
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416 | ymin = cv->height; |
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417 | ymax = -1; |
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418 | } |
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419 | |
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420 | cv->dirty_xmin = xmin; |
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421 | cv->dirty_xmax = xmax; |
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422 | cv->dirty_ymin = ymin; |
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423 | cv->dirty_ymax = ymax; |
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424 | |
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425 | return 0; |
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426 | } |
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427 | |
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428 | /** \brief Free a \e libcaca canvas. |
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429 | * |
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430 | * Free all resources allocated by caca_create_canvas(). The canvas |
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431 | * pointer becomes invalid and must no longer be used unless a new call |
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432 | * to caca_create_canvas() is made. |
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433 | * |
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434 | * If an error occurs, -1 is returned and \b errno is set accordingly: |
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435 | * - \c EBUSY The canvas is in use by a display driver and cannot be freed. |
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436 | * |
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437 | * \param cv A libcaca canvas. |
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438 | * \return 0 in case of success, -1 if an error occurred. |
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439 | */ |
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440 | int caca_free_canvas(caca_canvas_t *cv) |
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441 | { |
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442 | int f; |
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443 | |
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444 | if(cv->refcount) |
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445 | { |
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446 | seterrno(EBUSY); |
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447 | return -1; |
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448 | } |
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449 | |
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450 | for(f = 0; f < cv->framecount; f++) |
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451 | { |
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452 | free(cv->frames[f].chars); |
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453 | free(cv->frames[f].attrs); |
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454 | free(cv->frames[f].name); |
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455 | } |
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456 | |
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457 | caca_canvas_set_figfont(cv, NULL); |
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458 | |
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459 | free(cv->frames); |
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460 | free(cv); |
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461 | |
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462 | return 0; |
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463 | } |
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464 | |
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465 | /** \brief Generate a random integer within a range. |
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466 | * |
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467 | * Generate a random integer within the given range. |
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468 | * |
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469 | * This function never fails. |
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470 | * |
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471 | * \param min The lower bound of the integer range. |
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472 | * \param max The upper bound of the integer range. |
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473 | * \return A random integer comprised between \p min and \p max - 1 |
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474 | * (inclusive). |
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475 | */ |
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476 | int caca_rand(int min, int max) |
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477 | { |
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478 | static int need_init = 1; |
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479 | |
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480 | if(need_init) |
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481 | { |
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482 | srand(getpid() + time(NULL)); |
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483 | need_init = 0; |
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484 | } |
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485 | |
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486 | return min + (int)((1.0 * (max - min)) * rand() / (RAND_MAX + 1.0)); |
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487 | } |
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488 | |
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489 | |
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490 | /* |
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491 | * XXX: The following functions are local. |
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492 | */ |
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493 | |
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494 | int caca_resize(caca_canvas_t *cv, int width, int height) |
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495 | { |
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496 | int x, y, f, old_width, old_height, new_size, old_size; |
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497 | |
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498 | old_width = cv->width; |
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499 | old_height = cv->height; |
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500 | old_size = old_width * old_height; |
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501 | |
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502 | _caca_save_frame_info(cv); |
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503 | |
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504 | cv->width = width; |
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505 | cv->height = height; |
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506 | new_size = width * height; |
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507 | |
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508 | /* Step 1: if new area is bigger, resize the memory area now. */ |
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509 | if(new_size > old_size) |
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510 | { |
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511 | for(f = 0; f < cv->framecount; f++) |
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512 | { |
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513 | cv->frames[f].chars = realloc(cv->frames[f].chars, |
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514 | new_size * sizeof(uint32_t)); |
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515 | cv->frames[f].attrs = realloc(cv->frames[f].attrs, |
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516 | new_size * sizeof(uint32_t)); |
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517 | if(new_size && (!cv->frames[f].chars || !cv->frames[f].attrs)) |
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518 | { |
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519 | seterrno(ENOMEM); |
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520 | return -1; |
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521 | } |
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522 | } |
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523 | } |
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524 | |
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525 | /* Step 2: move line data if necessary. */ |
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526 | if(width == old_width) |
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527 | { |
---|
528 | /* Width did not change, which means we do not need to move data. */ |
---|
529 | ; |
---|
530 | } |
---|
531 | else if(width > old_width) |
---|
532 | { |
---|
533 | /* New width is bigger than old width, which means we need to |
---|
534 | * copy lines starting from the bottom of the screen otherwise |
---|
535 | * we will overwrite information. */ |
---|
536 | for(f = 0; f < cv->framecount; f++) |
---|
537 | { |
---|
538 | uint32_t *chars = cv->frames[f].chars; |
---|
539 | uint32_t *attrs = cv->frames[f].attrs; |
---|
540 | |
---|
541 | for(y = height < old_height ? height : old_height; y--; ) |
---|
542 | { |
---|
543 | uint32_t attr = cv->frames[f].curattr; |
---|
544 | |
---|
545 | for(x = old_width; x--; ) |
---|
546 | { |
---|
547 | chars[y * width + x] = chars[y * old_width + x]; |
---|
548 | attrs[y * width + x] = attrs[y * old_width + x]; |
---|
549 | } |
---|
550 | |
---|
551 | /* Zero the end of the line */ |
---|
552 | for(x = width - old_width; x--; ) |
---|
553 | { |
---|
554 | chars[y * width + old_width + x] = (uint32_t)' '; |
---|
555 | attrs[y * width + old_width + x] = attr; |
---|
556 | } |
---|
557 | } |
---|
558 | } |
---|
559 | |
---|
560 | caca_add_dirty_rectangle(cv, old_width, 0, width - 1, old_height - 1); |
---|
561 | } |
---|
562 | else |
---|
563 | { |
---|
564 | /* New width is smaller. Copy as many lines as possible. Ignore |
---|
565 | * the first line, it is already in place. */ |
---|
566 | int lines = height < old_height ? height : old_height; |
---|
567 | |
---|
568 | for(f = 0; f < cv->framecount; f++) |
---|
569 | { |
---|
570 | uint32_t *chars = cv->frames[f].chars; |
---|
571 | uint32_t *attrs = cv->frames[f].attrs; |
---|
572 | |
---|
573 | for(y = 1; y < lines; y++) |
---|
574 | { |
---|
575 | for(x = 0; x < width; x++) |
---|
576 | { |
---|
577 | chars[y * width + x] = chars[y * old_width + x]; |
---|
578 | attrs[y * width + x] = attrs[y * old_width + x]; |
---|
579 | } |
---|
580 | } |
---|
581 | } |
---|
582 | } |
---|
583 | |
---|
584 | /* Step 3: fill the bottom of the new screen if necessary. */ |
---|
585 | if(height > old_height) |
---|
586 | { |
---|
587 | for(f = 0; f < cv->framecount; f++) |
---|
588 | { |
---|
589 | uint32_t *chars = cv->frames[f].chars; |
---|
590 | uint32_t *attrs = cv->frames[f].attrs; |
---|
591 | uint32_t attr = cv->frames[f].curattr; |
---|
592 | |
---|
593 | /* Zero the bottom of the screen */ |
---|
594 | for(x = (height - old_height) * width; x--; ) |
---|
595 | { |
---|
596 | chars[old_height * width + x] = (uint32_t)' '; |
---|
597 | attrs[old_height * width + x] = attr; |
---|
598 | } |
---|
599 | } |
---|
600 | |
---|
601 | caca_add_dirty_rectangle(cv, 0, old_height, old_width - 1, height - 1); |
---|
602 | } |
---|
603 | |
---|
604 | /* XXX: technically we should not worry about the dirty rectangle in |
---|
605 | * the bottom-right corner, because we only handle one dirty rectangle, |
---|
606 | * but in case the API changes later, we make sure this is handled. */ |
---|
607 | if(width > old_width && height > old_height) |
---|
608 | caca_add_dirty_rectangle(cv, old_width, old_height, |
---|
609 | width - 1, height - 1); |
---|
610 | |
---|
611 | /* Step 4: if new area is smaller, resize memory area now. */ |
---|
612 | if(new_size < old_size) |
---|
613 | { |
---|
614 | for(f = 0; f < cv->framecount; f++) |
---|
615 | { |
---|
616 | cv->frames[f].chars = realloc(cv->frames[f].chars, |
---|
617 | new_size * sizeof(uint32_t)); |
---|
618 | cv->frames[f].attrs = realloc(cv->frames[f].attrs, |
---|
619 | new_size * sizeof(uint32_t)); |
---|
620 | if(new_size && (!cv->frames[f].chars || !cv->frames[f].attrs)) |
---|
621 | { |
---|
622 | seterrno(ENOMEM); |
---|
623 | return -1; |
---|
624 | } |
---|
625 | } |
---|
626 | } |
---|
627 | |
---|
628 | /* Set new size */ |
---|
629 | for(f = 0; f < cv->framecount; f++) |
---|
630 | { |
---|
631 | if(cv->frames[f].x > (int)width) |
---|
632 | cv->frames[f].x = width; |
---|
633 | if(cv->frames[f].y > (int)height) |
---|
634 | cv->frames[f].y = height; |
---|
635 | |
---|
636 | cv->frames[f].width = width; |
---|
637 | cv->frames[f].height = height; |
---|
638 | } |
---|
639 | |
---|
640 | /* Reset the current frame shortcuts */ |
---|
641 | _caca_load_frame_info(cv); |
---|
642 | |
---|
643 | return 0; |
---|
644 | } |
---|
645 | |
---|
646 | /* |
---|
647 | * XXX: The following functions are aliases. |
---|
648 | */ |
---|
649 | |
---|
650 | cucul_canvas_t * cucul_create_canvas(int, int) CACA_ALIAS(caca_create_canvas); |
---|
651 | int cucul_manage_canvas(cucul_canvas_t *, int (*)(void *), void *) |
---|
652 | CACA_ALIAS(caca_manage_canvas); |
---|
653 | int cucul_unmanage_canvas(cucul_canvas_t *, int (*)(void *), void *) |
---|
654 | CACA_ALIAS(caca_unmanage_canvas); |
---|
655 | int cucul_set_canvas_size(cucul_canvas_t *, int, int) |
---|
656 | CACA_ALIAS(caca_set_canvas_size); |
---|
657 | int cucul_get_canvas_width(cucul_canvas_t const *) |
---|
658 | CACA_ALIAS(caca_get_canvas_width); |
---|
659 | int cucul_get_canvas_height(cucul_canvas_t const *) |
---|
660 | CACA_ALIAS(caca_get_canvas_height); |
---|
661 | uint8_t const * cucul_get_canvas_chars(cucul_canvas_t const *) |
---|
662 | CACA_ALIAS(caca_get_canvas_chars); |
---|
663 | uint8_t const * cucul_get_canvas_attrs(cucul_canvas_t const *) |
---|
664 | CACA_ALIAS(caca_get_canvas_attrs); |
---|
665 | int cucul_free_canvas(cucul_canvas_t *) CACA_ALIAS(caca_free_canvas); |
---|
666 | int cucul_rand(int, int) CACA_ALIAS(caca_rand); |
---|
667 | |
---|