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3584 | sourcerer | 1 | /* |
2 | * This file is part of LibCSS. |
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3 | * Licensed under the MIT License, |
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4 | * http://www.opensource.org/licenses/mit-license.php |
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5 | * Copyright 2008 John-Mark Bell |
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6 | */ |
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7 | |||
8 | #ifndef css_stylesheet_h_ |
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9 | #define css_stylesheet_h_ |
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10 | |||
11 | #include |
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12 | #include |
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13 | |||
14 | #include |
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15 | |||
16 | #include |
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17 | #include |
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18 | #include |
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19 | #include |
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20 | |||
21 | #include "bytecode/bytecode.h" |
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22 | #include "parse/parse.h" |
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23 | #include "select/hash.h" |
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24 | |||
25 | typedef struct css_rule css_rule; |
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26 | typedef struct css_selector css_selector; |
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27 | |||
28 | typedef struct css_style { |
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29 | css_code_t *bytecode; /**< Pointer to bytecode */ |
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30 | uint32_t used; /**< number of code entries used */ |
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31 | uint32_t allocated; /**< number of allocated code entries */ |
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32 | struct css_stylesheet *sheet; /**< containing sheet */ |
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33 | } css_style; |
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34 | |||
35 | typedef enum css_selector_type { |
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36 | CSS_SELECTOR_ELEMENT, |
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37 | CSS_SELECTOR_CLASS, |
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38 | CSS_SELECTOR_ID, |
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39 | CSS_SELECTOR_PSEUDO_CLASS, |
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40 | CSS_SELECTOR_PSEUDO_ELEMENT, |
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41 | CSS_SELECTOR_ATTRIBUTE, |
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42 | CSS_SELECTOR_ATTRIBUTE_EQUAL, |
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43 | CSS_SELECTOR_ATTRIBUTE_DASHMATCH, |
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44 | CSS_SELECTOR_ATTRIBUTE_INCLUDES, |
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45 | CSS_SELECTOR_ATTRIBUTE_PREFIX, |
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46 | CSS_SELECTOR_ATTRIBUTE_SUFFIX, |
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47 | CSS_SELECTOR_ATTRIBUTE_SUBSTRING |
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48 | } css_selector_type; |
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49 | |||
50 | typedef enum css_combinator { |
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51 | CSS_COMBINATOR_NONE, |
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52 | CSS_COMBINATOR_ANCESTOR, |
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53 | CSS_COMBINATOR_PARENT, |
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54 | CSS_COMBINATOR_SIBLING, |
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55 | CSS_COMBINATOR_GENERIC_SIBLING |
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56 | } css_combinator; |
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57 | |||
58 | typedef enum css_selector_detail_value_type { |
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59 | CSS_SELECTOR_DETAIL_VALUE_STRING, |
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60 | CSS_SELECTOR_DETAIL_VALUE_NTH |
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61 | } css_selector_detail_value_type; |
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62 | |||
63 | typedef union css_selector_detail_value { |
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64 | lwc_string *string; /**< Interned string, or NULL */ |
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65 | struct { |
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66 | int32_t a; |
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67 | int32_t b; |
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68 | } nth; /**< Data for x = an + b */ |
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69 | } css_selector_detail_value; |
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70 | |||
71 | typedef struct css_selector_detail { |
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72 | css_qname qname; /**< Interned name */ |
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73 | css_selector_detail_value value; /**< Detail value */ |
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74 | |||
75 | unsigned int type : 4, /**< Type of selector */ |
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76 | comb : 3, /**< Type of combinator */ |
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77 | next : 1, /**< Another selector detail |
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78 | * follows */ |
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79 | value_type : 1, /**< Type of value field */ |
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80 | negate : 1; /**< Detail match is inverted */ |
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81 | } css_selector_detail; |
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82 | |||
83 | struct css_selector { |
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84 | css_selector *combinator; /**< Combining selector */ |
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85 | |||
86 | css_rule *rule; /**< Owning rule */ |
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87 | |||
88 | #define CSS_SPECIFICITY_A 0x01000000 |
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89 | #define CSS_SPECIFICITY_B 0x00010000 |
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90 | #define CSS_SPECIFICITY_C 0x00000100 |
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91 | #define CSS_SPECIFICITY_D 0x00000001 |
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92 | uint32_t specificity; /**< Specificity of selector */ |
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93 | |||
94 | css_selector_detail data; /**< Selector data */ |
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95 | }; |
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96 | |||
97 | typedef enum css_rule_type { |
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98 | CSS_RULE_UNKNOWN, |
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99 | CSS_RULE_SELECTOR, |
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100 | CSS_RULE_CHARSET, |
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101 | CSS_RULE_IMPORT, |
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102 | CSS_RULE_MEDIA, |
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103 | CSS_RULE_FONT_FACE, |
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104 | CSS_RULE_PAGE |
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105 | } css_rule_type; |
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106 | |||
107 | typedef enum css_rule_parent_type { |
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108 | CSS_RULE_PARENT_STYLESHEET, |
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109 | CSS_RULE_PARENT_RULE |
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110 | } css_rule_parent_type; |
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111 | |||
112 | struct css_rule { |
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113 | void *parent; /**< containing rule or owning |
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114 | * stylesheet (defined by ptype) |
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115 | */ |
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116 | css_rule *next; /**< next in list */ |
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117 | css_rule *prev; /**< previous in list */ |
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118 | |||
119 | unsigned int type : 4, /**< css_rule_type */ |
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120 | index : 16, /**< index in sheet */ |
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121 | items : 8, /**< # items in rule */ |
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122 | ptype : 1; /**< css_rule_parent_type */ |
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4821 | ashmew2 | 123 | };// _ALIGNED; |
3584 | sourcerer | 124 | |
125 | typedef struct css_rule_selector { |
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126 | css_rule base; |
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127 | |||
128 | css_selector **selectors; |
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129 | css_style *style; |
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130 | } css_rule_selector; |
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131 | |||
132 | typedef struct css_rule_media { |
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133 | css_rule base; |
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134 | |||
135 | uint64_t media; |
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136 | |||
137 | css_rule *first_child; |
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138 | css_rule *last_child; |
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139 | } css_rule_media; |
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140 | |||
141 | typedef struct css_rule_font_face { |
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142 | css_rule base; |
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143 | |||
144 | css_font_face *font_face; |
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145 | } css_rule_font_face; |
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146 | |||
147 | typedef struct css_rule_page { |
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148 | css_rule base; |
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149 | |||
150 | css_selector *selector; |
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151 | css_style *style; |
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152 | } css_rule_page; |
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153 | |||
154 | typedef struct css_rule_import { |
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155 | css_rule base; |
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156 | |||
157 | lwc_string *url; |
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158 | uint64_t media; |
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159 | |||
160 | css_stylesheet *sheet; |
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161 | } css_rule_import; |
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162 | |||
163 | typedef struct css_rule_charset { |
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164 | css_rule base; |
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165 | |||
166 | lwc_string *encoding; /** \todo use MIB enum? */ |
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167 | } css_rule_charset; |
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168 | |||
169 | struct css_stylesheet { |
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170 | css_selector_hash *selectors; /**< Hashtable of selectors */ |
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171 | |||
172 | uint32_t rule_count; /**< Number of rules in sheet */ |
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173 | css_rule *rule_list; /**< List of rules in sheet */ |
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174 | css_rule *last_rule; /**< Last rule in list */ |
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175 | |||
176 | bool disabled; /**< Whether this sheet is |
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177 | * disabled */ |
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178 | |||
179 | char *url; /**< URL of this sheet */ |
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180 | char *title; /**< Title of this sheet */ |
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181 | |||
182 | css_language_level level; /**< Language level of sheet */ |
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183 | css_parser *parser; /**< Core parser for sheet */ |
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184 | void *parser_frontend; /**< Frontend parser */ |
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185 | lwc_string **propstrings; /**< Property strings, for parser */ |
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186 | |||
187 | bool quirks_allowed; /**< Quirks permitted */ |
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188 | bool quirks_used; /**< Quirks actually used */ |
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189 | |||
190 | bool inline_style; /**< Is an inline style */ |
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191 | |||
192 | size_t size; /**< Size, in bytes */ |
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193 | |||
194 | css_import_notification_fn import; /**< Import notification function */ |
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195 | void *import_pw; /**< Private word */ |
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196 | |||
197 | css_url_resolution_fn resolve; /**< URL resolution function */ |
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198 | void *resolve_pw; /**< Private word */ |
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199 | |||
200 | css_color_resolution_fn color; /**< Colour resolution function */ |
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201 | void *color_pw; /**< Private word */ |
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202 | |||
203 | /** System font resolution function */ |
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204 | css_font_resolution_fn font; |
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205 | void *font_pw; /**< Private word */ |
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206 | |||
207 | css_allocator_fn alloc; /**< Allocation function */ |
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208 | void *pw; /**< Private word */ |
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209 | |||
210 | css_style *cached_style; /**< Cache for style parsing */ |
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211 | |||
212 | lwc_string **string_vector; /**< Bytecode string vector */ |
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213 | uint32_t string_vector_l; /**< The string vector allocated |
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214 | * length in entries */ |
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215 | uint32_t string_vector_c; /**< The number of string |
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216 | * vector entries used */ |
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217 | }; |
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218 | |||
219 | css_error css__stylesheet_style_create(css_stylesheet *sheet, |
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220 | css_style **style); |
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221 | css_error css__stylesheet_style_append(css_style *style, css_code_t code); |
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222 | css_error css__stylesheet_style_vappend(css_style *style, uint32_t style_count, |
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223 | ...); |
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224 | css_error css__stylesheet_style_destroy(css_style *style); |
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225 | css_error css__stylesheet_merge_style(css_style *target, css_style *style); |
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226 | |||
227 | /** Helper function to avoid distinct buildOPV call */ |
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228 | static inline css_error css__stylesheet_style_appendOPV(css_style *style, |
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229 | opcode_t opcode, uint8_t flags, uint16_t value) |
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230 | { |
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231 | return css__stylesheet_style_append(style, |
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232 | buildOPV(opcode, flags, value)); |
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233 | } |
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234 | |||
235 | /** Helper function to set inherit flag */ |
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236 | static inline css_error css_stylesheet_style_inherit(css_style *style, |
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237 | opcode_t opcode) |
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238 | { |
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239 | return css__stylesheet_style_append(style, |
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240 | buildOPV(opcode, FLAG_INHERIT, 0)); |
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241 | } |
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242 | |||
243 | css_error css__stylesheet_selector_create(css_stylesheet *sheet, |
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244 | css_qname *qname, css_selector **selector); |
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245 | css_error css__stylesheet_selector_destroy(css_stylesheet *sheet, |
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246 | css_selector *selector); |
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247 | |||
248 | css_error css__stylesheet_selector_detail_init(css_stylesheet *sheet, |
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249 | css_selector_type type, css_qname *qname, |
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250 | css_selector_detail_value value, |
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251 | css_selector_detail_value_type value_type, |
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252 | bool negate, css_selector_detail *detail); |
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253 | |||
254 | css_error css__stylesheet_selector_append_specific(css_stylesheet *sheet, |
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255 | css_selector **parent, const css_selector_detail *specific); |
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256 | |||
257 | css_error css__stylesheet_selector_combine(css_stylesheet *sheet, |
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258 | css_combinator type, css_selector *a, css_selector *b); |
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259 | |||
260 | css_error css__stylesheet_rule_create(css_stylesheet *sheet, css_rule_type type, |
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261 | css_rule **rule); |
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262 | css_error css__stylesheet_rule_destroy(css_stylesheet *sheet, css_rule *rule); |
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263 | |||
264 | css_error css__stylesheet_rule_add_selector(css_stylesheet *sheet, |
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265 | css_rule *rule, css_selector *selector); |
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266 | |||
267 | css_error css__stylesheet_rule_append_style(css_stylesheet *sheet, |
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268 | css_rule *rule, css_style *style); |
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269 | |||
270 | css_error css__stylesheet_rule_set_charset(css_stylesheet *sheet, |
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271 | css_rule *rule, lwc_string *charset); |
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272 | |||
273 | css_error css__stylesheet_rule_set_nascent_import(css_stylesheet *sheet, |
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274 | css_rule *rule, lwc_string *url, uint64_t media); |
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275 | |||
276 | css_error css__stylesheet_rule_set_media(css_stylesheet *sheet, |
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277 | css_rule *rule, uint64_t media); |
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278 | |||
279 | css_error css__stylesheet_rule_set_page_selector(css_stylesheet *sheet, |
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280 | css_rule *rule, css_selector *sel); |
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281 | |||
282 | css_error css__stylesheet_add_rule(css_stylesheet *sheet, css_rule *rule, |
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283 | css_rule *parent); |
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284 | css_error css__stylesheet_remove_rule(css_stylesheet *sheet, css_rule *rule); |
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285 | |||
286 | css_error css__stylesheet_string_get(css_stylesheet *sheet, |
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287 | uint32_t string_number, lwc_string **string); |
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288 | |||
289 | css_error css__stylesheet_string_add(css_stylesheet *sheet, |
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290 | lwc_string *string, uint32_t *string_number); |
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291 | |||
292 | #endif>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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293 |