| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* @package dompdf |
| 5 |
* @link https://github.com/dompdf/dompdf |
| 6 |
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License |
| 7 |
*/ |
| 8 |
namespace WCPOS\Vendor\Dompdf\Css; |
| 9 |
|
| 10 |
use WCPOS\Vendor\Dompdf\Adapter\CPDF; |
| 11 |
use WCPOS\Vendor\Dompdf\Css\Content\Attr; |
| 12 |
use WCPOS\Vendor\Dompdf\Css\Content\CloseQuote; |
| 13 |
use WCPOS\Vendor\Dompdf\Css\Content\ContentPart; |
| 14 |
use WCPOS\Vendor\Dompdf\Css\Content\Counter; |
| 15 |
use WCPOS\Vendor\Dompdf\Css\Content\Counters; |
| 16 |
use WCPOS\Vendor\Dompdf\Css\Content\NoCloseQuote; |
| 17 |
use WCPOS\Vendor\Dompdf\Css\Content\NoOpenQuote; |
| 18 |
use WCPOS\Vendor\Dompdf\Css\Content\OpenQuote; |
| 19 |
use WCPOS\Vendor\Dompdf\Css\Content\StringPart; |
| 20 |
use WCPOS\Vendor\Dompdf\Css\Content\Url; |
| 21 |
use WCPOS\Vendor\Dompdf\Exception; |
| 22 |
use WCPOS\Vendor\Dompdf\FontMetrics; |
| 23 |
use WCPOS\Vendor\Dompdf\Frame; |
| 24 |
use WCPOS\Vendor\Dompdf\Helpers; |
| 25 |
/** |
| 26 |
* Represents CSS properties. |
| 27 |
* |
| 28 |
* The Style class is responsible for handling and storing CSS properties. |
| 29 |
* It includes methods to resolve colors and lengths, as well as getters & |
| 30 |
* setters for many CSS properties. |
| 31 |
* |
| 32 |
* Access to the different CSS properties is provided by the methods |
| 33 |
* {@link Style::set_prop()} and {@link Style::get_specified()}, and the |
| 34 |
* property overload methods {@link Style::__set()} and {@link Style::__get()}, |
| 35 |
* as well as {@link Style::set_used()}. The latter methods operate on used |
| 36 |
* values and permit access to any (CSS) property using the following syntax: |
| 37 |
* |
| 38 |
* ``` |
| 39 |
* $style->margin_top = 10.0; |
| 40 |
* echo $style->margin_top; // Returns `10.0` |
| 41 |
* ``` |
| 42 |
* |
| 43 |
* To declare a property from a string, use {@link Style::set_prop()}: |
| 44 |
* |
| 45 |
* ``` |
| 46 |
* $style->set_prop("margin_top", "1em"); |
| 47 |
* echo $style->get_specified("margin_top"); // Returns `1em` |
| 48 |
* echo $style->margin_top; // Returns `12.0`, assuming the default font size |
| 49 |
* ``` |
| 50 |
* |
| 51 |
* Actual CSS parsing is performed in the {@link Stylesheet} class. |
| 52 |
* |
| 53 |
* @property string $azimuth |
| 54 |
* @property string $background_attachment |
| 55 |
* @property array|string $background_color |
| 56 |
* @property string $background_image Image URL or `none` |
| 57 |
* @property string $background_image_resolution |
| 58 |
* @property array $background_position Pair of `[x, y]`, each value being a length in pt or a percentage value |
| 59 |
* @property string $background_repeat |
| 60 |
* @property array|string $background_size `cover`, `contain`, or `[width, height]`, each being a length, percentage, or `auto` |
| 61 |
* @property string $border_collapse |
| 62 |
* @property string $border_color Only use for setting all sides to the same color |
| 63 |
* @property float[] $border_spacing Pair of `[horizontal, vertical]` spacing |
| 64 |
* @property string $border_style Only use for setting all sides to the same style |
| 65 |
* @property array|string $border_top_color |
| 66 |
* @property array|string $border_right_color |
| 67 |
* @property array|string $border_bottom_color |
| 68 |
* @property array|string $border_left_color |
| 69 |
* @property string $border_top_style Valid border style |
| 70 |
* @property string $border_right_style Valid border style |
| 71 |
* @property string $border_bottom_style Valid border style |
| 72 |
* @property string $border_left_style Valid border style |
| 73 |
* @property float $border_top_width Length in pt |
| 74 |
* @property float $border_right_width Length in pt |
| 75 |
* @property float $border_bottom_width Length in pt |
| 76 |
* @property float $border_left_width Length in pt |
| 77 |
* @property string $border_width Only use for setting all sides to the same width |
| 78 |
* @property float|string $border_bottom_left_radius Radius in pt or a percentage value |
| 79 |
* @property float|string $border_bottom_right_radius Radius in pt or a percentage value |
| 80 |
* @property float|string $border_top_left_radius Radius in pt or a percentage value |
| 81 |
* @property float|string $border_top_right_radius Radius in pt or a percentage value |
| 82 |
* @property string $border_radius Only use for setting all corners to the same radius |
| 83 |
* @property float|string $bottom Length in pt, a percentage value, or `auto` |
| 84 |
* @property string $caption_side |
| 85 |
* @property string $clear |
| 86 |
* @property string $clip |
| 87 |
* @property array|string $color |
| 88 |
* @property ContentPart[]|string $content List of content components, `normal`, or `none` |
| 89 |
* @property array|string $counter_increment Array defining the counters to increment or `none` |
| 90 |
* @property array|string $counter_reset Array defining the counters to reset or `none` |
| 91 |
* @property string $cue_after |
| 92 |
* @property string $cue_before |
| 93 |
* @property string $cue |
| 94 |
* @property string $cursor |
| 95 |
* @property string $direction |
| 96 |
* @property string $display |
| 97 |
* @property string $elevation |
| 98 |
* @property string $empty_cells |
| 99 |
* @property string $float |
| 100 |
* @property string $font_family |
| 101 |
* @property float $font_size Length in pt |
| 102 |
* @property string $font_style `normal`, `italic`, or `oblique` |
| 103 |
* @property string $font_variant |
| 104 |
* @property int $font_weight Number in the range [1, 1000] |
| 105 |
* @property float|string $height Length in pt, a percentage value, or `auto` |
| 106 |
* @property string $image_resolution |
| 107 |
* @property string $inset Only use for setting all box insets to the same length |
| 108 |
* @property float|string $left Length in pt, a percentage value, or `auto` |
| 109 |
* @property float $letter_spacing Length in pt |
| 110 |
* @property float $line_height Length in pt |
| 111 |
* @property string $list_style_image Image URL or `none` |
| 112 |
* @property string $list_style_position `inside` or `outside` |
| 113 |
* @property string $list_style_type |
| 114 |
* @property float|string $margin_right Length in pt, a percentage value, or `auto` |
| 115 |
* @property float|string $margin_left Length in pt, a percentage value, or `auto` |
| 116 |
* @property float|string $margin_top Length in pt, a percentage value, or `auto` |
| 117 |
* @property float|string $margin_bottom Length in pt, a percentage value, or `auto` |
| 118 |
* @property string $margin Only use for setting all sides to the same length |
| 119 |
* @property float|string $max_height Length in pt, a percentage value, or `none` |
| 120 |
* @property float|string $max_width Length in pt, a percentage value, or `none` |
| 121 |
* @property float|string $min_height Length in pt, a percentage value, or `auto` |
| 122 |
* @property float|string $min_width Length in pt, a percentage value, or `auto` |
| 123 |
* @property float $opacity Number in the range [0, 1] |
| 124 |
* @property int $orphans |
| 125 |
* @property array|string $outline_color |
| 126 |
* @property string $outline_style Valid border style, except for `hidden` |
| 127 |
* @property float $outline_width Length in pt |
| 128 |
* @property float $outline_offset Length in pt |
| 129 |
* @property string $overflow |
| 130 |
* @property string $overflow_wrap |
| 131 |
* @property float|string $padding_top Length in pt or a percentage value |
| 132 |
* @property float|string $padding_right Length in pt or a percentage value |
| 133 |
* @property float|string $padding_bottom Length in pt or a percentage value |
| 134 |
* @property float|string $padding_left Length in pt or a percentage value |
| 135 |
* @property string $padding Only use for setting all sides to the same length |
| 136 |
* @property string $page_break_after |
| 137 |
* @property string $page_break_before |
| 138 |
* @property string $page_break_inside |
| 139 |
* @property string $pause_after |
| 140 |
* @property string $pause_before |
| 141 |
* @property string $pause |
| 142 |
* @property string $pitch_range |
| 143 |
* @property string $pitch |
| 144 |
* @property string $play_during |
| 145 |
* @property string $position |
| 146 |
* @property array|string $quotes List of quote pairs, or `none` |
| 147 |
* @property string $richness |
| 148 |
* @property float|string $right Length in pt, a percentage value, or `auto` |
| 149 |
* @property float[]|string $size Pair of `[width, height]` or `auto` |
| 150 |
* @property string $speak_header |
| 151 |
* @property string $speak_numeral |
| 152 |
* @property string $speak_punctuation |
| 153 |
* @property string $speak |
| 154 |
* @property string $speech_rate |
| 155 |
* @property string $src |
| 156 |
* @property string $stress |
| 157 |
* @property string $table_layout |
| 158 |
* @property string $text_align |
| 159 |
* @property string $text_decoration |
| 160 |
* @property float|string $text_indent Length in pt or a percentage value |
| 161 |
* @property string $text_transform |
| 162 |
* @property float|string $top Length in pt, a percentage value, or `auto` |
| 163 |
* @property array $transform List of transforms |
| 164 |
* @property array $transform_origin Triplet of `[x, y, z]`, each value being a length in pt, or a percentage value for x and y |
| 165 |
* @property string $unicode_bidi |
| 166 |
* @property string $unicode_range |
| 167 |
* @property string $vertical_align |
| 168 |
* @property string $visibility |
| 169 |
* @property string $voice_family |
| 170 |
* @property string $volume |
| 171 |
* @property string $white_space |
| 172 |
* @property int $widows |
| 173 |
* @property float|string $width Length in pt, a percentage value, or `auto` |
| 174 |
* @property string $word_break |
| 175 |
* @property float $word_spacing Length in pt |
| 176 |
* @property int|string $z_index Integer value or `auto` |
| 177 |
* @property string $_dompdf_keep |
| 178 |
* |
| 179 |
* @package dompdf |
| 180 |
*/ |
| 181 |
class Style |
| 182 |
{ |
| 183 |
protected const CSS_IDENTIFIER = "-?[_a-zA-Z]+[_a-zA-Z0-9-]*"; |
| 184 |
protected const CSS_INTEGER = "[+-]?\\d+"; |
| 185 |
protected const CSS_NUMBER = "[+-]?\\d*\\.?\\d+(?:[eE][+-]?\\d+)?"; |
| 186 |
protected const CSS_STRING = "" . '"(?>(?:\\\\["]|[^"])*)(?<!\\\\)"|' . "'(?>(?:\\\\[']|[^'])*)(?<!\\\\)'"; |
| 187 |
// String '' |
| 188 |
protected const CSS_VAR = "var\\((([^()]|(?R))*)\\)"; |
| 189 |
/** |
| 190 |
* @link https://www.w3.org/TR/css-values-4/#calc-syntax |
| 191 |
*/ |
| 192 |
protected const CSS_MATH_FUNCTIONS = [ |
| 193 |
// Basic Arithmetic |
| 194 |
"calc" => \true, |
| 195 |
// Comparison Functions |
| 196 |
"min" => \true, |
| 197 |
"max" => \true, |
| 198 |
"clamp" => \true, |
| 199 |
// Stepped Value Functions |
| 200 |
"round" => \true, |
| 201 |
// Not fully supported |
| 202 |
"mod" => \true, |
| 203 |
"rem" => \true, |
| 204 |
// Trigonometric Functions |
| 205 |
"sin" => \true, |
| 206 |
"cos" => \true, |
| 207 |
"tan" => \true, |
| 208 |
"asin" => \true, |
| 209 |
"acos" => \true, |
| 210 |
"atan" => \true, |
| 211 |
"atan2" => \true, |
| 212 |
// Exponential Functions |
| 213 |
"pow" => \true, |
| 214 |
"sqrt" => \true, |
| 215 |
"hypot" => \true, |
| 216 |
"log" => \true, |
| 217 |
"exp" => \true, |
| 218 |
// Sign-Related Functions |
| 219 |
"abs" => \true, |
| 220 |
"sign" => \true, |
| 221 |
]; |
| 222 |
/** |
| 223 |
* https://www.w3.org/TR/css-values-3/#custom-idents |
| 224 |
*/ |
| 225 |
protected const CUSTOM_IDENT_FORBIDDEN = ["inherit", "initial", "unset", "default"]; |
| 226 |
/** |
| 227 |
* Default font size, in points. |
| 228 |
* |
| 229 |
* @var float |
| 230 |
*/ |
| 231 |
public static $default_font_size = 12; |
| 232 |
/** |
| 233 |
* Default line height, as a fraction of the font size. |
| 234 |
* |
| 235 |
* @var float |
| 236 |
*/ |
| 237 |
public static $default_line_height = 1.2; |
| 238 |
/** |
| 239 |
* Default "absolute" font sizes relative to the default font-size |
| 240 |
* https://www.w3.org/TR/css-fonts-3/#absolute-size-value |
| 241 |
* |
| 242 |
* @var array<float> |
| 243 |
*/ |
| 244 |
public static $font_size_keywords = [ |
| 245 |
"xx-small" => 0.6, |
| 246 |
// 3/5 |
| 247 |
"x-small" => 0.75, |
| 248 |
// 3/4 |
| 249 |
"small" => 0.889, |
| 250 |
// 8/9 |
| 251 |
"medium" => 1, |
| 252 |
// 1 |
| 253 |
"large" => 1.2, |
| 254 |
// 6/5 |
| 255 |
"x-large" => 1.5, |
| 256 |
// 3/2 |
| 257 |
"xx-large" => 2.0, |
| 258 |
]; |
| 259 |
/** |
| 260 |
* List of valid text-align keywords. |
| 261 |
*/ |
| 262 |
public const TEXT_ALIGN_KEYWORDS = ["left", "right", "center", "justify"]; |
| 263 |
/** |
| 264 |
* List of valid vertical-align keywords. |
| 265 |
*/ |
| 266 |
public const VERTICAL_ALIGN_KEYWORDS = ["baseline", "bottom", "middle", "sub", "super", "text-bottom", "text-top", "top"]; |
| 267 |
/** |
| 268 |
* List of all block-level (outer) display types. |
| 269 |
* * https://www.w3.org/TR/css-display-3/#display-type |
| 270 |
* * https://www.w3.org/TR/css-display-3/#block-level |
| 271 |
*/ |
| 272 |
public const BLOCK_LEVEL_TYPES = [ |
| 273 |
"block", |
| 274 |
// "flow-root", |
| 275 |
"list-item", |
| 276 |
// "flex", |
| 277 |
// "grid", |
| 278 |
"table", |
| 279 |
]; |
| 280 |
/** |
| 281 |
* List of all inline-level (outer) display types. |
| 282 |
* * https://www.w3.org/TR/css-display-3/#display-type |
| 283 |
* * https://www.w3.org/TR/css-display-3/#inline-level |
| 284 |
*/ |
| 285 |
public const INLINE_LEVEL_TYPES = [ |
| 286 |
"inline", |
| 287 |
"inline-block", |
| 288 |
// "inline-flex", |
| 289 |
// "inline-grid", |
| 290 |
"inline-table", |
| 291 |
]; |
| 292 |
/** |
| 293 |
* List of all table-internal (outer) display types. |
| 294 |
* * https://www.w3.org/TR/css-display-3/#layout-specific-display |
| 295 |
*/ |
| 296 |
public const TABLE_INTERNAL_TYPES = ["table-row-group", "table-header-group", "table-footer-group", "table-row", "table-cell", "table-column-group", "table-column", "table-caption"]; |
| 297 |
/** |
| 298 |
* List of all inline (inner) display types. |
| 299 |
*/ |
| 300 |
public const INLINE_TYPES = ["inline"]; |
| 301 |
/** |
| 302 |
* List of all block (inner) display types. |
| 303 |
*/ |
| 304 |
public const BLOCK_TYPES = ["block", "inline-block", "table-cell", "list-item"]; |
| 305 |
/** |
| 306 |
* List of all table (inner) display types. |
| 307 |
*/ |
| 308 |
public const TABLE_TYPES = ["table", "inline-table"]; |
| 309 |
/** |
| 310 |
* Lookup table for valid display types. Initially computed from the |
| 311 |
* different constants. |
| 312 |
* |
| 313 |
* @var array |
| 314 |
*/ |
| 315 |
protected static $valid_display_types = []; |
| 316 |
/** |
| 317 |
* List of all positioned types. |
| 318 |
*/ |
| 319 |
public const POSITIONED_TYPES = ["relative", "absolute", "fixed"]; |
| 320 |
/** |
| 321 |
* List of valid border styles. |
| 322 |
*/ |
| 323 |
public const BORDER_STYLES = ["none", "hidden", "dotted", "dashed", "solid", "double", "groove", "ridge", "inset", "outset"]; |
| 324 |
/** |
| 325 |
* List of valid outline-style values. |
| 326 |
* Same as the border styles, except `auto` is allowed, `hidden` is not. |
| 327 |
* |
| 328 |
* @link https://www.w3.org/TR/css-ui-4/#typedef-outline-line-style |
| 329 |
*/ |
| 330 |
protected const OUTLINE_STYLES = ["auto", "none", "dotted", "dashed", "solid", "double", "groove", "ridge", "inset", "outset"]; |
| 331 |
/** |
| 332 |
* Map of CSS shorthand properties and their corresponding sub-properties. |
| 333 |
* The order of the sub-properties is relevant for the fallback getter, |
| 334 |
* which is used in case no specific getter method is defined. |
| 335 |
* |
| 336 |
* @var array<string, string[]> |
| 337 |
*/ |
| 338 |
protected static $_props_shorthand = ["background" => [ |
| 339 |
"background_image", |
| 340 |
"background_position", |
| 341 |
"background_size", |
| 342 |
"background_repeat", |
| 343 |
// "background_origin", |
| 344 |
// "background_clip", |
| 345 |
"background_attachment", |
| 346 |
"background_color", |
| 347 |
], "border" => ["border_top_width", "border_right_width", "border_bottom_width", "border_left_width", "border_top_style", "border_right_style", "border_bottom_style", "border_left_style", "border_top_color", "border_right_color", "border_bottom_color", "border_left_color"], "border_top" => ["border_top_width", "border_top_style", "border_top_color"], "border_right" => ["border_right_width", "border_right_style", "border_right_color"], "border_bottom" => ["border_bottom_width", "border_bottom_style", "border_bottom_color"], "border_left" => ["border_left_width", "border_left_style", "border_left_color"], "border_width" => ["border_top_width", "border_right_width", "border_bottom_width", "border_left_width"], "border_style" => ["border_top_style", "border_right_style", "border_bottom_style", "border_left_style"], "border_color" => ["border_top_color", "border_right_color", "border_bottom_color", "border_left_color"], "border_radius" => ["border_top_left_radius", "border_top_right_radius", "border_bottom_right_radius", "border_bottom_left_radius"], "font" => [ |
| 348 |
"font_family", |
| 349 |
"font_size", |
| 350 |
// "font_stretch", |
| 351 |
"font_style", |
| 352 |
"font_variant", |
| 353 |
"font_weight", |
| 354 |
"line_height", |
| 355 |
], "inset" => ["top", "right", "bottom", "left"], "list_style" => ["list_style_image", "list_style_position", "list_style_type"], "margin" => ["margin_top", "margin_right", "margin_bottom", "margin_left"], "padding" => ["padding_top", "padding_right", "padding_bottom", "padding_left"], "outline" => ["outline_width", "outline_style", "outline_color"]]; |
| 356 |
/** |
| 357 |
* Maps legacy property names to actual property names. |
| 358 |
* |
| 359 |
* @var array<string, string> |
| 360 |
*/ |
| 361 |
protected static $_props_alias = ["word_wrap" => "overflow_wrap", "_dompdf_background_image_resolution" => "background_image_resolution", "_dompdf_image_resolution" => "image_resolution", "_webkit_transform" => "transform", "_webkit_transform_origin" => "transform_origin"]; |
| 362 |
/** |
| 363 |
* Default style values. |
| 364 |
* |
| 365 |
* @link https://www.w3.org/TR/CSS21/propidx.html |
| 366 |
* |
| 367 |
* @var array<string, mixed> |
| 368 |
*/ |
| 369 |
protected static $_defaults = null; |
| 370 |
/** |
| 371 |
* Lookup table for properties that inherit by default. |
| 372 |
* |
| 373 |
* @link https://www.w3.org/TR/CSS21/propidx.html |
| 374 |
* |
| 375 |
* @var array<string, true> |
| 376 |
*/ |
| 377 |
protected static $_inherited = ["azimuth" => \true, "background_image_resolution" => \true, "border_collapse" => \true, "border_spacing" => \true, "caption_side" => \true, "color" => \true, "cursor" => \true, "direction" => \true, "elevation" => \true, "empty_cells" => \true, "font_family" => \true, "font_size" => \true, "font_style" => \true, "font_variant" => \true, "font_weight" => \true, "font" => \true, "image_resolution" => \true, "letter_spacing" => \true, "line_height" => \true, "list_style_image" => \true, "list_style_position" => \true, "list_style_type" => \true, "list_style" => \true, "orphans" => \true, "overflow_wrap" => \true, "pitch_range" => \true, "pitch" => \true, "quotes" => \true, "richness" => \true, "speak_header" => \true, "speak_numeral" => \true, "speak_punctuation" => \true, "speak" => \true, "speech_rate" => \true, "stress" => \true, "text_align" => \true, "text_indent" => \true, "text_transform" => \true, "visibility" => \true, "voice_family" => \true, "volume" => \true, "white_space" => \true, "widows" => \true, "word_break" => \true, "word_spacing" => \true]; |
| 378 |
/** |
| 379 |
* @var array<string, string[]> |
| 380 |
*/ |
| 381 |
protected static $_dependency_map = ["border_top_style" => ["border_top_width"], "border_bottom_style" => ["border_bottom_width"], "border_left_style" => ["border_left_width"], "border_right_style" => ["border_right_width"], "direction" => ["text_align"], "font_size" => ["background_position", "background_size", "border_top_width", "border_right_width", "border_bottom_width", "border_left_width", "border_top_left_radius", "border_top_right_radius", "border_bottom_right_radius", "border_bottom_left_radius", "inset", "letter_spacing", "line_height", "margin_top", "margin_right", "margin_bottom", "margin_left", "outline_width", "outline_offset", "padding_top", "padding_right", "padding_bottom", "padding_left", "word_spacing", "width", "height", "min-width", "min-height", "max-width", "max-height"], "float" => ["display"], "position" => ["display"], "outline_style" => ["outline_width"]]; |
| 382 |
/** |
| 383 |
* Lookup table for dependent properties. Initially computed from the |
| 384 |
* dependency map. |
| 385 |
* |
| 386 |
* @var array<string, true> |
| 387 |
*/ |
| 388 |
protected static $_dependent_props = []; |
| 389 |
/** |
| 390 |
* Caches method_exists result |
| 391 |
* |
| 392 |
* @var array<string, bool> |
| 393 |
*/ |
| 394 |
protected static $_methods_cache = []; |
| 395 |
/** |
| 396 |
* The stylesheet this style belongs to |
| 397 |
* |
| 398 |
* @var Stylesheet |
| 399 |
*/ |
| 400 |
protected $_stylesheet; |
| 401 |
/** |
| 402 |
* Media queries attached to the style |
| 403 |
* |
| 404 |
* This is a two-dimensional array where the first dimension represents |
| 405 |
* the media query grouping (logic-or) and the second dimension the |
| 406 |
* media queries within the grouping. |
| 407 |
* |
| 408 |
* The structure of the actual query element is: |
| 409 |
* - media query feature |
| 410 |
* - media query value or condition |
| 411 |
* - media query operator (e.g., not) |
| 412 |
* |
| 413 |
* @var array |
| 414 |
*/ |
| 415 |
protected $_media_queries; |
| 416 |
/** |
| 417 |
* Properties set by an `!important` declaration. |
| 418 |
* |
| 419 |
* @var array<string, true> |
| 420 |
*/ |
| 421 |
protected $_important_props = []; |
| 422 |
/** |
| 423 |
* Specified (or declared) values of the CSS properties. |
| 424 |
* |
| 425 |
* https://www.w3.org/TR/css-cascade-3/#value-stages |
| 426 |
* |
| 427 |
* @var array<string, mixed> |
| 428 |
*/ |
| 429 |
protected $_props = []; |
| 430 |
/** |
| 431 |
* Used to track which CSS property were set directly versus |
| 432 |
* those set via shorthand property |
| 433 |
* |
| 434 |
* @var array<string, true> |
| 435 |
*/ |
| 436 |
protected $_props_specified = []; |
| 437 |
/** |
| 438 |
* Computed values of the CSS properties. |
| 439 |
* |
| 440 |
* @var array<string, mixed> |
| 441 |
*/ |
| 442 |
protected $_props_computed = []; |
| 443 |
/** |
| 444 |
* Used values of the CSS properties. |
| 445 |
* |
| 446 |
* @var array<string, mixed> |
| 447 |
*/ |
| 448 |
protected $_props_used = []; |
| 449 |
/** |
| 450 |
* Marks properties with non-final used values that should be cleared on |
| 451 |
* style reset. |
| 452 |
* |
| 453 |
* @var array<string, true> |
| 454 |
*/ |
| 455 |
protected $non_final_used = []; |
| 456 |
/** |
| 457 |
* Used to track CSS property assignment entry/exit in order to watch |
| 458 |
* for circular dependencies. |
| 459 |
* |
| 460 |
* @var array<int, string> |
| 461 |
*/ |
| 462 |
protected $_prop_stack = []; |
| 463 |
/** |
| 464 |
* Used to track CSS variable resolution entry/exit in order to watch |
| 465 |
* for circular dependencies. |
| 466 |
* |
| 467 |
* @var array<int, string> |
| 468 |
*/ |
| 469 |
protected $_var_stack = []; |
| 470 |
/** |
| 471 |
* Style of the parent element in document tree. |
| 472 |
* |
| 473 |
* @var Style |
| 474 |
*/ |
| 475 |
protected $parent_style; |
| 476 |
/** |
| 477 |
* @var Frame|null |
| 478 |
*/ |
| 479 |
protected $_frame; |
| 480 |
/** |
| 481 |
* The origin of the style |
| 482 |
* |
| 483 |
* @var int |
| 484 |
*/ |
| 485 |
protected $_origin = Stylesheet::ORIG_AUTHOR; |
| 486 |
/** |
| 487 |
* The computed bottom spacing |
| 488 |
* |
| 489 |
* @var float|string|null |
| 490 |
*/ |
| 491 |
private $_computed_bottom_spacing = null; |
| 492 |
/** |
| 493 |
* @var bool|null |
| 494 |
*/ |
| 495 |
private $has_border_radius_cache = null; |
| 496 |
/** |
| 497 |
* @var array|null |
| 498 |
*/ |
| 499 |
private $resolved_border_radius = null; |
| 500 |
/** |
| 501 |
* @var FontMetrics |
| 502 |
*/ |
| 503 |
private $fontMetrics; |
| 504 |
/** |
| 505 |
* @param Stylesheet $stylesheet The stylesheet the style is associated with. |
| 506 |
* @param int $origin |
| 507 |
*/ |
| 508 |
public function __construct(Stylesheet $stylesheet, int $origin = Stylesheet::ORIG_AUTHOR) |
| 509 |
{ |
| 510 |
$this->fontMetrics = $stylesheet->getFontMetrics(); |
| 511 |
$this->_stylesheet = $stylesheet; |
| 512 |
$this->_media_queries = []; |
| 513 |
$this->_origin = $origin; |
| 514 |
$this->parent_style = null; |
| 515 |
if (!isset(self::$_defaults)) { |
| 516 |
// Shorthand |
| 517 |
$d =& self::$_defaults; |
| 518 |
// All CSS 2.1 properties, and their default values |
| 519 |
// Some properties are specified with their computed value for |
| 520 |
// efficiency; this only works if the computed value is not |
| 521 |
// dependent on another property |
| 522 |
$d["azimuth"] = "center"; |
| 523 |
$d["background_attachment"] = "scroll"; |
| 524 |
$d["background_color"] = "transparent"; |
| 525 |
$d["background_image"] = "none"; |
| 526 |
$d["background_image_resolution"] = "normal"; |
| 527 |
$d["background_position"] = [0.0, 0.0]; |
| 528 |
$d["background_repeat"] = "repeat"; |
| 529 |
$d["background"] = ""; |
| 530 |
$d["border_collapse"] = "separate"; |
| 531 |
$d["border_color"] = ""; |
| 532 |
$d["border_spacing"] = [0.0, 0.0]; |
| 533 |
$d["border_style"] = ""; |
| 534 |
$d["border_top"] = ""; |
| 535 |
$d["border_right"] = ""; |
| 536 |
$d["border_bottom"] = ""; |
| 537 |
$d["border_left"] = ""; |
| 538 |
$d["border_top_color"] = "currentcolor"; |
| 539 |
$d["border_right_color"] = "currentcolor"; |
| 540 |
$d["border_bottom_color"] = "currentcolor"; |
| 541 |
$d["border_left_color"] = "currentcolor"; |
| 542 |
$d["border_top_style"] = "none"; |
| 543 |
$d["border_right_style"] = "none"; |
| 544 |
$d["border_bottom_style"] = "none"; |
| 545 |
$d["border_left_style"] = "none"; |
| 546 |
$d["border_top_width"] = "medium"; |
| 547 |
$d["border_right_width"] = "medium"; |
| 548 |
$d["border_bottom_width"] = "medium"; |
| 549 |
$d["border_left_width"] = "medium"; |
| 550 |
$d["border_width"] = ""; |
| 551 |
$d["border_bottom_left_radius"] = 0.0; |
| 552 |
$d["border_bottom_right_radius"] = 0.0; |
| 553 |
$d["border_top_left_radius"] = 0.0; |
| 554 |
$d["border_top_right_radius"] = 0.0; |
| 555 |
$d["border_radius"] = ""; |
| 556 |
$d["border"] = ""; |
| 557 |
$d["bottom"] = "auto"; |
| 558 |
$d["caption_side"] = "top"; |
| 559 |
$d["clear"] = "none"; |
| 560 |
$d["clip"] = "auto"; |
| 561 |
$d["color"] = "#000000"; |
| 562 |
$d["content"] = "normal"; |
| 563 |
$d["counter_increment"] = "none"; |
| 564 |
$d["counter_reset"] = "none"; |
| 565 |
$d["cue_after"] = "none"; |
| 566 |
$d["cue_before"] = "none"; |
| 567 |
$d["cue"] = ""; |
| 568 |
$d["cursor"] = "auto"; |
| 569 |
$d["direction"] = "ltr"; |
| 570 |
$d["display"] = "inline"; |
| 571 |
$d["elevation"] = "level"; |
| 572 |
$d["empty_cells"] = "show"; |
| 573 |
$d["float"] = "none"; |
| 574 |
$d["font_family"] = $stylesheet->get_dompdf()->getOptions()->getDefaultFont(); |
| 575 |
$d["font_size"] = "medium"; |
| 576 |
$d["font_style"] = "normal"; |
| 577 |
$d["font_variant"] = "normal"; |
| 578 |
$d["font_weight"] = 400; |
| 579 |
$d["font"] = ""; |
| 580 |
$d["height"] = "auto"; |
| 581 |
$d["image_resolution"] = "normal"; |
| 582 |
$d["inset"] = ""; |
| 583 |
$d["left"] = "auto"; |
| 584 |
$d["letter_spacing"] = "normal"; |
| 585 |
$d["line_height"] = "normal"; |
| 586 |
$d["list_style_image"] = "none"; |
| 587 |
$d["list_style_position"] = "outside"; |
| 588 |
$d["list_style_type"] = "disc"; |
| 589 |
$d["list_style"] = ""; |
| 590 |
$d["margin_right"] = 0.0; |
| 591 |
$d["margin_left"] = 0.0; |
| 592 |
$d["margin_top"] = 0.0; |
| 593 |
$d["margin_bottom"] = 0.0; |
| 594 |
$d["margin"] = ""; |
| 595 |
$d["max_height"] = "none"; |
| 596 |
$d["max_width"] = "none"; |
| 597 |
$d["min_height"] = "auto"; |
| 598 |
$d["min_width"] = "auto"; |
| 599 |
$d["orphans"] = 2; |
| 600 |
$d["outline_color"] = "currentcolor"; |
| 601 |
// "invert" special color is not supported |
| 602 |
$d["outline_style"] = "none"; |
| 603 |
$d["outline_width"] = "medium"; |
| 604 |
$d["outline_offset"] = 0.0; |
| 605 |
$d["outline"] = ""; |
| 606 |
$d["overflow"] = "visible"; |
| 607 |
$d["overflow_wrap"] = "normal"; |
| 608 |
$d["padding_top"] = 0.0; |
| 609 |
$d["padding_right"] = 0.0; |
| 610 |
$d["padding_bottom"] = 0.0; |
| 611 |
$d["padding_left"] = 0.0; |
| 612 |
$d["padding"] = ""; |
| 613 |
$d["page_break_after"] = "auto"; |
| 614 |
$d["page_break_before"] = "auto"; |
| 615 |
$d["page_break_inside"] = "auto"; |
| 616 |
$d["pause_after"] = "0"; |
| 617 |
$d["pause_before"] = "0"; |
| 618 |
$d["pause"] = ""; |
| 619 |
$d["pitch_range"] = "50"; |
| 620 |
$d["pitch"] = "medium"; |
| 621 |
$d["play_during"] = "auto"; |
| 622 |
$d["position"] = "static"; |
| 623 |
$d["quotes"] = "auto"; |
| 624 |
$d["richness"] = "50"; |
| 625 |
$d["right"] = "auto"; |
| 626 |
$d["size"] = "auto"; |
| 627 |
// @page |
| 628 |
$d["speak_header"] = "once"; |
| 629 |
$d["speak_numeral"] = "continuous"; |
| 630 |
$d["speak_punctuation"] = "none"; |
| 631 |
$d["speak"] = "normal"; |
| 632 |
$d["speech_rate"] = "medium"; |
| 633 |
$d["stress"] = "50"; |
| 634 |
$d["table_layout"] = "auto"; |
| 635 |
$d["text_align"] = ""; |
| 636 |
$d["text_decoration"] = "none"; |
| 637 |
$d["text_indent"] = 0.0; |
| 638 |
$d["text_transform"] = "none"; |
| 639 |
$d["top"] = "auto"; |
| 640 |
$d["unicode_bidi"] = "normal"; |
| 641 |
$d["vertical_align"] = "baseline"; |
| 642 |
$d["visibility"] = "visible"; |
| 643 |
$d["voice_family"] = ""; |
| 644 |
$d["volume"] = "medium"; |
| 645 |
$d["white_space"] = "normal"; |
| 646 |
$d["widows"] = 2; |
| 647 |
$d["width"] = "auto"; |
| 648 |
$d["word_break"] = "normal"; |
| 649 |
$d["word_spacing"] = "normal"; |
| 650 |
$d["z_index"] = "auto"; |
| 651 |
// CSS3 |
| 652 |
$d["opacity"] = 1.0; |
| 653 |
$d["background_size"] = ["auto", "auto"]; |
| 654 |
$d["transform"] = []; |
| 655 |
$d["transform_origin"] = ["50%", "50%", 0.0]; |
| 656 |
// for @font-face |
| 657 |
$d["src"] = ""; |
| 658 |
$d["unicode_range"] = ""; |
| 659 |
// vendor-prefixed properties |
| 660 |
$d["_dompdf_keep"] = ""; |
| 661 |
// Compute dependent props from dependency map |
| 662 |
foreach (self::$_dependency_map as $props) { |
| 663 |
foreach ($props as $prop) { |
| 664 |
self::$_dependent_props[$prop] = \true; |
| 665 |
} |
| 666 |
} |
| 667 |
// Compute valid display-type lookup table |
| 668 |
self::$valid_display_types = ["none" => \true, "-dompdf-br" => \true, "-dompdf-image" => \true, "-dompdf-list-bullet" => \true, "-dompdf-page" => \true]; |
| 669 |
foreach (self::BLOCK_LEVEL_TYPES as $val) { |
| 670 |
self::$valid_display_types[$val] = \true; |
| 671 |
} |
| 672 |
foreach (self::INLINE_LEVEL_TYPES as $val) { |
| 673 |
self::$valid_display_types[$val] = \true; |
| 674 |
} |
| 675 |
foreach (self::TABLE_INTERNAL_TYPES as $val) { |
| 676 |
self::$valid_display_types[$val] = \true; |
| 677 |
} |
| 678 |
} |
| 679 |
} |
| 680 |
/** |
| 681 |
* Clear all non-final used values. |
| 682 |
*/ |
| 683 |
public function reset() : void |
| 684 |
{ |
| 685 |
foreach (\array_keys($this->non_final_used) as $prop) { |
| 686 |
unset($this->_props_used[$prop]); |
| 687 |
} |
| 688 |
$this->non_final_used = []; |
| 689 |
} |
| 690 |
/** |
| 691 |
* @param array $media_queries |
| 692 |
*/ |
| 693 |
public function set_media_queries(array $media_queries) : void |
| 694 |
{ |
| 695 |
$this->_media_queries = $media_queries; |
| 696 |
} |
| 697 |
/** |
| 698 |
* @return array |
| 699 |
*/ |
| 700 |
public function get_media_queries() : array |
| 701 |
{ |
| 702 |
return $this->_media_queries; |
| 703 |
} |
| 704 |
/** |
| 705 |
* @param Frame $frame |
| 706 |
*/ |
| 707 |
public function set_frame(Frame $frame) : void |
| 708 |
{ |
| 709 |
$this->_frame = $frame; |
| 710 |
} |
| 711 |
/** |
| 712 |
* @return Frame|null |
| 713 |
*/ |
| 714 |
public function get_frame() : ?Frame |
| 715 |
{ |
| 716 |
return $this->_frame; |
| 717 |
} |
| 718 |
/** |
| 719 |
* @param int $origin |
| 720 |
*/ |
| 721 |
public function set_origin(int $origin) : void |
| 722 |
{ |
| 723 |
$this->_origin = $origin; |
| 724 |
} |
| 725 |
/** |
| 726 |
* @return int |
| 727 |
*/ |
| 728 |
public function get_origin() : int |
| 729 |
{ |
| 730 |
return $this->_origin; |
| 731 |
} |
| 732 |
/** |
| 733 |
* Returns the {@link Stylesheet} the style is associated with. |
| 734 |
* |
| 735 |
* @return Stylesheet |
| 736 |
*/ |
| 737 |
public function get_stylesheet() : Stylesheet |
| 738 |
{ |
| 739 |
return $this->_stylesheet; |
| 740 |
} |
| 741 |
public function is_custom_property(string $prop) : bool |
| 742 |
{ |
| 743 |
return \substr($prop, 0, 2) === "--"; |
| 744 |
} |
| 745 |
public function is_absolute() : bool |
| 746 |
{ |
| 747 |
$position = $this->__get("position"); |
| 748 |
return $position === "absolute" || $position === "fixed"; |
| 749 |
} |
| 750 |
public function is_in_flow() : bool |
| 751 |
{ |
| 752 |
$float = $this->__get("float"); |
| 753 |
return $float === "none" && !$this->is_absolute(); |
| 754 |
} |
| 755 |
/** |
| 756 |
* Converts any CSS length value into an absolute length in points. |
| 757 |
* |
| 758 |
* length_in_pt() takes a single length (e.g. '1em') or an array of |
| 759 |
* lengths and returns an absolute length. If an array is passed, then |
| 760 |
* the return value is the sum of all elements. If any of the lengths |
| 761 |
* provided are "auto" or "none" then that value is returned. |
| 762 |
* |
| 763 |
* If a reference size is not provided, the current font size is used. |
| 764 |
* |
| 765 |
* @param float|string|array $length The numeric length (or string measurement) or array of lengths to resolve. |
| 766 |
* @param float|null $ref_size An absolute reference size to resolve percentage lengths. |
| 767 |
* |
| 768 |
* @return float|string |
| 769 |
*/ |
| 770 |
public function length_in_pt($length, ?float $ref_size = null) |
| 771 |
{ |
| 772 |
$font_size = $this->__get("font_size"); |
| 773 |
$ref_size = $ref_size ?? $font_size; |
| 774 |
if (!\is_array($length)) { |
| 775 |
$length = [$length]; |
| 776 |
} |
| 777 |
$ret = 0.0; |
| 778 |
foreach ($length as $l) { |
| 779 |
if ($l === "auto" || $l === "none") { |
| 780 |
return $l; |
| 781 |
} |
| 782 |
// Assume numeric values are already in points |
| 783 |
if (\is_numeric($l)) { |
| 784 |
$ret += (float) $l; |
| 785 |
continue; |
| 786 |
} |
| 787 |
$val = $this->single_length_in_pt((string) $l, $ref_size, $font_size); |
| 788 |
$ret += $val ?? 0; |
| 789 |
} |
| 790 |
return $ret; |
| 791 |
} |
| 792 |
/** |
| 793 |
* Convert a length declaration to pt. |
| 794 |
* |
| 795 |
* @param string $l The length declaration. |
| 796 |
* @param float $ref_size Reference size for percentage declarations. |
| 797 |
* @param float|null $font_size Font size for resolving font-size relative units. |
| 798 |
* |
| 799 |
* @return float|null The length in pt, or `null` for invalid declarations. |
| 800 |
*/ |
| 801 |
protected function single_length_in_pt(string $l, float $ref_size = 0, ?float $font_size = null) : ?float |
| 802 |
{ |
| 803 |
static $cache = []; |
| 804 |
$font_size = $font_size ?? $this->__get("font_size"); |
| 805 |
$dpi = $this->_stylesheet->get_dompdf()->getOptions()->getDpi(); |
| 806 |
$key = "{$l}/{$dpi}/{$ref_size}/{$font_size}"; |
| 807 |
if (\array_key_exists($key, $cache)) { |
| 808 |
return $cache[$key]; |
| 809 |
} |
| 810 |
$number = self::CSS_NUMBER; |
| 811 |
$pattern = "/^({$number})([a-zA-Z%]*)?\$/"; |
| 812 |
if (!\preg_match($pattern, $l, $matches)) { |
| 813 |
$ident = self::CSS_IDENTIFIER; |
| 814 |
$pattern = "/^({$ident})\\(.*\\)\$/i"; |
| 815 |
if (\preg_match($pattern, $l)) { |
| 816 |
$value = $this->evaluate_func($this->parse_func($l), $ref_size, $font_size); |
| 817 |
return $cache[$key] = $value; |
| 818 |
} |
| 819 |
return null; |
| 820 |
} |
| 821 |
$v = (float) $matches[1]; |
| 822 |
$unit = \strtolower($matches[2]); |
| 823 |
if ($unit === "") { |
| 824 |
// Legacy support for unitless values, not covered by spec. Might |
| 825 |
// want to restrict this to unitless `0` in the future |
| 826 |
$value = $v; |
| 827 |
} elseif ($unit === "%") { |
| 828 |
$value = $v / 100 * $ref_size; |
| 829 |
} elseif ($unit === "px") { |
| 830 |
$value = $v * 72 / $dpi; |
| 831 |
} elseif ($unit === "pt") { |
| 832 |
$value = $v; |
| 833 |
} elseif ($unit === "rem") { |
| 834 |
$tree = $this->_stylesheet->get_dompdf()->getTree(); |
| 835 |
$root_style = $tree !== null ? $tree->get_root()->get_style() : null; |
| 836 |
$root_font_size = $root_style === null || $root_style === $this ? $font_size : $root_style->__get("font_size"); |
| 837 |
$value = $v * $root_font_size; |
| 838 |
// Skip caching if the root style is not available yet, as to avoid |
| 839 |
// incorrectly cached values if the root font size is different from |
| 840 |
// the default |
| 841 |
if ($root_style === null) { |
| 842 |
return $value; |
| 843 |
} |
| 844 |
} elseif ($unit === "em") { |
| 845 |
$value = $v * $font_size; |
| 846 |
} elseif ($unit === "cm") { |
| 847 |
$value = $v * 72 / 2.54; |
| 848 |
} elseif ($unit === "mm") { |
| 849 |
$value = $v * 72 / 25.4; |
| 850 |
} elseif ($unit === "ex") { |
| 851 |
// FIXME: em:ex ratio? |
| 852 |
$value = $v * $font_size / 2; |
| 853 |
} elseif ($unit === "in") { |
| 854 |
$value = $v * 72; |
| 855 |
} elseif ($unit === "pc") { |
| 856 |
$value = $v * 12; |
| 857 |
} else { |
| 858 |
// Invalid or unsupported declaration |
| 859 |
$value = null; |
| 860 |
} |
| 861 |
return $cache[$key] = $value; |
| 862 |
} |
| 863 |
/** |
| 864 |
* Shunting-yard Algorithm |
| 865 |
* @param string $expr infix expression |
| 866 |
* @return array |
| 867 |
*/ |
| 868 |
private function parse_func(string $expr) : array |
| 869 |
{ |
| 870 |
if (\substr_count($expr, '(') !== \substr_count($expr, ')')) { |
| 871 |
return []; |
| 872 |
} |
| 873 |
$expr = \str_replace(['(', ')', '*', '/', ','], [' ( ', ' ) ', ' * ', ' / ', ' , '], $expr); |
| 874 |
$expr = \trim(\preg_replace('/\\s+/', ' ', $expr)); |
| 875 |
if ($expr === '') { |
| 876 |
return []; |
| 877 |
} |
| 878 |
$precedence = ['*' => 3, '/' => 3, '+' => 2, '-' => 2, ',' => 1]; |
| 879 |
$opStack = []; |
| 880 |
$queue = []; |
| 881 |
$parts = \explode(' ', $expr); |
| 882 |
foreach ($parts as $part) { |
| 883 |
if ($part === '(') { |
| 884 |
$opStack[] = $part; |
| 885 |
} elseif (\array_key_exists(\strtolower($part), self::CSS_MATH_FUNCTIONS)) { |
| 886 |
$opStack[] = \strtolower($part); |
| 887 |
} elseif ($part === ')') { |
| 888 |
while (\count($opStack) > 0 && \end($opStack) !== '(' && !\array_key_exists(\end($opStack), self::CSS_MATH_FUNCTIONS)) { |
| 889 |
$queue[] = \array_pop($opStack); |
| 890 |
} |
| 891 |
if (\end($opStack) === '(') { |
| 892 |
\array_pop($opStack); |
| 893 |
} |
| 894 |
if (\count($opStack) > 0 && \array_key_exists(\end($opStack), self::CSS_MATH_FUNCTIONS)) { |
| 895 |
$queue[] = \array_pop($opStack); |
| 896 |
} |
| 897 |
} elseif (\array_key_exists($part, $precedence)) { |
| 898 |
while (\count($opStack) > 0 && \end($opStack) !== '(' && $precedence[\end($opStack)] >= $precedence[$part]) { |
| 899 |
$queue[] = \array_pop($opStack); |
| 900 |
} |
| 901 |
$opStack[] = $part; |
| 902 |
} else { |
| 903 |
$queue[] = $part; |
| 904 |
} |
| 905 |
} |
| 906 |
while (\count($opStack) > 0) { |
| 907 |
$queue[] = \array_pop($opStack); |
| 908 |
} |
| 909 |
return $queue; |
| 910 |
} |
| 911 |
/** |
| 912 |
* Reverse Polish Notation |
| 913 |
* @param array $rpn |
| 914 |
* @param float $ref_size |
| 915 |
* @param float|null $font_size |
| 916 |
* @return float|null |
| 917 |
*/ |
| 918 |
private function evaluate_func(array $rpn, float $ref_size = 0, ?float $font_size = null) : ?float |
| 919 |
{ |
| 920 |
if (\count($rpn) === 0) { |
| 921 |
return null; |
| 922 |
} |
| 923 |
$ops = ['*', '/', '+', '-', ',']; |
| 924 |
$stack = []; |
| 925 |
foreach ($rpn as $part) { |
| 926 |
if (\array_key_exists($part, self::CSS_MATH_FUNCTIONS)) { |
| 927 |
$argv = \array_pop($stack); |
| 928 |
if (!\is_array($argv)) { |
| 929 |
$argv = [$argv]; |
| 930 |
} |
| 931 |
$argc = \count($argv); |
| 932 |
switch ($part) { |
| 933 |
case 'abs': |
| 934 |
case 'acos': |
| 935 |
case 'asin': |
| 936 |
case 'atan': |
| 937 |
case 'cos': |
| 938 |
case 'exp': |
| 939 |
case 'sin': |
| 940 |
case 'sqrt': |
| 941 |
case 'tan': |
| 942 |
if ($argc !== 1) { |
| 943 |
return null; |
| 944 |
} |
| 945 |
$stack[] = \call_user_func_array($part, $argv); |
| 946 |
break; |
| 947 |
case 'atan2': |
| 948 |
case 'hypot': |
| 949 |
case 'pow': |
| 950 |
if ($argc !== 2) { |
| 951 |
return null; |
| 952 |
} |
| 953 |
$stack[] = \call_user_func_array($part, $argv); |
| 954 |
break; |
| 955 |
case 'log': |
| 956 |
if ($argc === 1) { |
| 957 |
$stack[] = \log($argv[0]); |
| 958 |
} elseif ($argc === 2) { |
| 959 |
$stack[] = \log($argv[0], $argv[1]); |
| 960 |
} else { |
| 961 |
return null; |
| 962 |
} |
| 963 |
break; |
| 964 |
case 'max': |
| 965 |
$stack[] = \max($argv); |
| 966 |
break; |
| 967 |
case 'min': |
| 968 |
$stack[] = \min($argv); |
| 969 |
break; |
| 970 |
case 'mod': |
| 971 |
if ($argc !== 2 || $argv[1] === 0.0) { |
| 972 |
return null; |
| 973 |
} |
| 974 |
if ($argv[1] > 0) { |
| 975 |
$stack[] = $argv[0] - \floor($argv[0] / $argv[1]) * $argv[1]; |
| 976 |
} else { |
| 977 |
$stack[] = $argv[0] - \ceil($argv[0] * -1 / $argv[1]) * $argv[1] * -1; |
| 978 |
} |
| 979 |
break; |
| 980 |
case 'rem': |
| 981 |
if ($argc !== 2 || $argv[1] === 0.0) { |
| 982 |
return null; |
| 983 |
} |
| 984 |
$stack[] = $argv[0] - \intval($argv[0] / $argv[1]) * $argv[1]; |
| 985 |
break; |
| 986 |
case 'round': |
| 987 |
if ($argc !== 2 || $argv[1] === 0.0) { |
| 988 |
return null; |
| 989 |
} |
| 990 |
if ($argv[0] >= 0) { |
| 991 |
$stack[] = \round($argv[0] / $argv[1], 0, \PHP_ROUND_HALF_UP) * $argv[1]; |
| 992 |
} else { |
| 993 |
$stack[] = \round($argv[0] / $argv[1], 0, \PHP_ROUND_HALF_DOWN) * $argv[1]; |
| 994 |
} |
| 995 |
break; |
| 996 |
case 'calc': |
| 997 |
if ($argc !== 1) { |
| 998 |
return null; |
| 999 |
} |
| 1000 |
$stack[] = $argv[0]; |
| 1001 |
break; |
| 1002 |
case 'clamp': |
| 1003 |
if ($argc !== 3) { |
| 1004 |
return null; |
| 1005 |
} |
| 1006 |
$stack[] = \max($argv[0], \min($argv[1], $argv[2])); |
| 1007 |
break; |
| 1008 |
case 'sign': |
| 1009 |
if ($argc !== 1) { |
| 1010 |
return null; |
| 1011 |
} |
| 1012 |
$stack[] = $argv[0] == 0 ? 0.0 : $argv[0] / \abs($argv[0]); |
| 1013 |
break; |
| 1014 |
default: |
| 1015 |
return null; |
| 1016 |
} |
| 1017 |
} elseif (\in_array($part, $ops, \true)) { |
| 1018 |
$rightValue = \array_pop($stack); |
| 1019 |
$leftValue = \array_pop($stack); |
| 1020 |
if ($rightValue === null || $leftValue === null) { |
| 1021 |
return null; |
| 1022 |
} |
| 1023 |
switch ($part) { |
| 1024 |
case '*': |
| 1025 |
$stack[] = $leftValue * $rightValue; |
| 1026 |
break; |
| 1027 |
case '/': |
| 1028 |
if ($rightValue === 0.0) { |
| 1029 |
return null; |
| 1030 |
} |
| 1031 |
$stack[] = $leftValue / $rightValue; |
| 1032 |
break; |
| 1033 |
case '+': |
| 1034 |
$stack[] = $leftValue + $rightValue; |
| 1035 |
break; |
| 1036 |
case '-': |
| 1037 |
$stack[] = $leftValue - $rightValue; |
| 1038 |
break; |
| 1039 |
case ',': |
| 1040 |
if (\is_array($leftValue)) { |
| 1041 |
$leftValue[] = $rightValue; |
| 1042 |
$stack[] = $leftValue; |
| 1043 |
} else { |
| 1044 |
$stack[] = [$leftValue, $rightValue]; |
| 1045 |
} |
| 1046 |
break; |
| 1047 |
} |
| 1048 |
} else { |
| 1049 |
$val = $this->single_length_in_pt($part, $ref_size, $font_size); |
| 1050 |
if ($val === null) { |
| 1051 |
return null; |
| 1052 |
} |
| 1053 |
$stack[] = $val; |
| 1054 |
} |
| 1055 |
} |
| 1056 |
if (\count($stack) > 1) { |
| 1057 |
return null; |
| 1058 |
} |
| 1059 |
return \floatval(\end($stack)); |
| 1060 |
} |
| 1061 |
/** |
| 1062 |
* Resolves the actual values for used CSS custom properties. |
| 1063 |
* |
| 1064 |
* This function receives the whole content of the var() function, which |
| 1065 |
* can also include a fallback value. |
| 1066 |
*/ |
| 1067 |
private function parse_var($matches) |
| 1068 |
{ |
| 1069 |
$variable = \is_array($matches) ? $matches[1] : $matches; |
| 1070 |
if (\in_array($variable, $this->_var_stack, \true)) { |
| 1071 |
return null; |
| 1072 |
} |
| 1073 |
\array_push($this->_var_stack, $variable); |
| 1074 |
// Split property name and an optional fallback value. |
| 1075 |
[$custom_prop, $fallback] = \explode(',', $variable, 2) + ['', '']; |
| 1076 |
$fallback = \trim($fallback); |
| 1077 |
// Try to retrieve the custom property value, or use the fallback value |
| 1078 |
// if the value could not be resolved. |
| 1079 |
$value = $this->computed($custom_prop) ?? $fallback; |
| 1080 |
// If the resolved value also has vars in it, resolve again. |
| 1081 |
$pattern = self::CSS_VAR; |
| 1082 |
$value = \preg_replace_callback("/{$pattern}/", [$this, "parse_var"], $value); |
| 1083 |
\array_pop($this->_var_stack); |
| 1084 |
return $value ?: null; |
| 1085 |
} |
| 1086 |
/** |
| 1087 |
* Resolve inherited property values using the provided parent style or the |
| 1088 |
* default values, in case no parent style exists. |
| 1089 |
* |
| 1090 |
* https://www.w3.org/TR/css-cascade-3/#inheriting |
| 1091 |
* |
| 1092 |
* @param Style|null $parent |
| 1093 |
*/ |
| 1094 |
public function inherit(?Style $parent = null) : void |
| 1095 |
{ |
| 1096 |
$this->parent_style = $parent; |
| 1097 |
// Clear the computed font size, as it might depend on the parent |
| 1098 |
// font size |
| 1099 |
unset($this->_props_computed["font_size"]); |
| 1100 |
unset($this->_props_used["font_size"]); |
| 1101 |
if ($parent) { |
| 1102 |
// For properties that inherit by default: When the cascade did |
| 1103 |
// not result in a value, inherit the parent value. Inheritance |
| 1104 |
// is handled via the specific sub-properties for shorthands. Custom |
| 1105 |
// properties (variables) are selected by the -- prefix. |
| 1106 |
foreach ($parent->_props as $prop => $val) { |
| 1107 |
if (!isset($this->_props[$prop]) && (isset(self::$_inherited[$prop]) || $this->is_custom_property($prop))) { |
| 1108 |
$parent_val = $parent->computed($prop); |
| 1109 |
if ($this->is_custom_property($prop)) { |
| 1110 |
$this->set_prop($prop, $parent_val); |
| 1111 |
} else { |
| 1112 |
$this->_props[$prop] = $parent_val; |
| 1113 |
$this->_props_computed[$prop] = $parent_val; |
| 1114 |
$this->_props_used[$prop] = null; |
| 1115 |
} |
| 1116 |
} |
| 1117 |
} |
| 1118 |
} |
| 1119 |
foreach ($this->_props as $prop => $val) { |
| 1120 |
if ($val === "inherit") { |
| 1121 |
if ($parent && isset($parent->_props[$prop])) { |
| 1122 |
$parent_val = $parent->computed($prop); |
| 1123 |
if ($this->is_custom_property($prop)) { |
| 1124 |
$this->set_prop($prop, $parent_val); |
| 1125 |
} else { |
| 1126 |
$this->_props[$prop] = $parent_val; |
| 1127 |
$this->_props_computed[$prop] = $parent_val; |
| 1128 |
$this->_props_used[$prop] = null; |
| 1129 |
} |
| 1130 |
} else { |
| 1131 |
if ($this->is_custom_property($prop)) { |
| 1132 |
$this->set_prop($prop, "unset"); |
| 1133 |
} else { |
| 1134 |
// Parent prop not set, use default |
| 1135 |
$this->_props[$prop] = self::$_defaults[$prop]; |
| 1136 |
unset($this->_props_computed[$prop]); |
| 1137 |
unset($this->_props_used[$prop]); |
| 1138 |
} |
| 1139 |
} |
| 1140 |
} |
| 1141 |
} |
| 1142 |
} |
| 1143 |
/** |
| 1144 |
* Override properties in this style with those in $style |
| 1145 |
* |
| 1146 |
* @param Style $style |
| 1147 |
*/ |
| 1148 |
public function merge(Style $style) : void |
| 1149 |
{ |
| 1150 |
foreach ($style->_props as $prop => $val) { |
| 1151 |
$important = isset($style->_important_props[$prop]); |
| 1152 |
// `!important` declarations take precedence over normal ones |
| 1153 |
if (!$important && isset($this->_important_props[$prop])) { |
| 1154 |
continue; |
| 1155 |
} |
| 1156 |
if ($important) { |
| 1157 |
$this->_important_props[$prop] = \true; |
| 1158 |
} |
| 1159 |
if ($this->is_custom_property($prop)) { |
| 1160 |
$this->set_prop($prop, $val, $important); |
| 1161 |
} else { |
| 1162 |
$this->_props[$prop] = $val; |
| 1163 |
} |
| 1164 |
// Copy an existing computed value only for non-dependent |
| 1165 |
// properties; otherwise it may be invalid for the current style |
| 1166 |
if (!isset(self::$_dependent_props[$prop]) && \array_key_exists($prop, $style->_props_computed)) { |
| 1167 |
$this->_props_computed[$prop] = $style->_props_computed[$prop]; |
| 1168 |
$this->_props_used[$prop] = null; |
| 1169 |
} else { |
| 1170 |
unset($this->_props_computed[$prop]); |
| 1171 |
unset($this->_props_used[$prop]); |
| 1172 |
} |
| 1173 |
if (\array_key_exists($prop, $style->_props_specified)) { |
| 1174 |
$this->_props_specified[$prop] = \true; |
| 1175 |
} |
| 1176 |
} |
| 1177 |
// re-evalutate CSS variables |
| 1178 |
foreach (\array_keys($this->_props) as $prop) { |
| 1179 |
if (!$this->is_custom_property($prop)) { |
| 1180 |
continue; |
| 1181 |
} |
| 1182 |
$this->set_prop($prop, $this->_props[$prop], isset($this->_important_props[$prop])); |
| 1183 |
} |
| 1184 |
} |
| 1185 |
/** |
| 1186 |
* Clear information about important declarations after the style has been |
| 1187 |
* finalized during stylesheet loading. |
| 1188 |
*/ |
| 1189 |
public function clear_important() : void |
| 1190 |
{ |
| 1191 |
$this->_important_props = []; |
| 1192 |
} |
| 1193 |
/** |
| 1194 |
* Clear border-radius and bottom-spacing cache as necessary when a given |
| 1195 |
* property is set. |
| 1196 |
* |
| 1197 |
* @param string $prop The property that is set. |
| 1198 |
*/ |
| 1199 |
protected function clear_cache(string $prop) : void |
| 1200 |
{ |
| 1201 |
// Clear border-radius cache on setting any border-radius |
| 1202 |
// property |
| 1203 |
if ($prop === "border_top_left_radius" || $prop === "border_top_right_radius" || $prop === "border_bottom_left_radius" || $prop === "border_bottom_right_radius") { |
| 1204 |
$this->has_border_radius_cache = null; |
| 1205 |
$this->resolved_border_radius = null; |
| 1206 |
} |
| 1207 |
// Clear bottom-spacing cache if necessary. Border style can |
| 1208 |
// disable/enable border calculations |
| 1209 |
if ($prop === "margin_bottom" || $prop === "padding_bottom" || $prop === "border_bottom_width" || $prop === "border_bottom_style") { |
| 1210 |
$this->_computed_bottom_spacing = null; |
| 1211 |
} |
| 1212 |
} |
| 1213 |
/** |
| 1214 |
* Set a style property from a value declaration. |
| 1215 |
* |
| 1216 |
* Setting `$clear_dependencies` to `false` is useful for saving a bit of |
| 1217 |
* unnecessary work while loading stylesheets. |
| 1218 |
* |
| 1219 |
* @param string $prop The property to set. |
| 1220 |
* @param mixed $val The value declaration or computed value. |
| 1221 |
* @param bool $important Whether the declaration is important. |
| 1222 |
* @param bool $clear_dependencies Whether to clear computed values of dependent properties. |
| 1223 |
*/ |
| 1224 |
public function set_prop(string $prop, $val, bool $important = \false, bool $clear_dependencies = \true) : void |
| 1225 |
{ |
| 1226 |
// Skip some checks for CSS custom properties. |
| 1227 |
if (!$this->is_custom_property($prop)) { |
| 1228 |
$prop = \str_replace("-", "_", $prop); |
| 1229 |
// Legacy property aliases |
| 1230 |
if (isset(self::$_props_alias[$prop])) { |
| 1231 |
$prop = self::$_props_alias[$prop]; |
| 1232 |
} |
| 1233 |
if (!isset(self::$_defaults[$prop])) { |
| 1234 |
global $_dompdf_warnings; |
| 1235 |
$_dompdf_warnings[] = "'{$prop}' is not a recognized CSS property."; |
| 1236 |
return; |
| 1237 |
} |
| 1238 |
} |
| 1239 |
$this->_props_specified[$prop] = \true; |
| 1240 |
// Trim declarations unconditionally, but only lower-case for comparison |
| 1241 |
// with the general keywords. Properties must handle case-insensitive |
| 1242 |
// comparisons individually |
| 1243 |
if (\is_string($val)) { |
| 1244 |
$val = \trim($val); |
| 1245 |
$lower = \strtolower($val); |
| 1246 |
if ($lower === "initial" || $lower === "inherit" || $lower === "unset") { |
| 1247 |
$val = $lower; |
| 1248 |
} |
| 1249 |
} |
| 1250 |
if (isset(self::$_props_shorthand[$prop])) { |
| 1251 |
// Shorthand properties directly set their respective sub-properties |
| 1252 |
// https://www.w3.org/TR/css-cascade-3/#shorthand |
| 1253 |
if ($val === "initial" || $val === "inherit" || $val === "unset") { |
| 1254 |
foreach (self::$_props_shorthand[$prop] as $sub_prop) { |
| 1255 |
$this->set_prop($sub_prop, $val, $important, $clear_dependencies); |
| 1256 |
} |
| 1257 |
} else { |
| 1258 |
$method = "_set_{$prop}"; |
| 1259 |
// Resolve the CSS custom property value(s). |
| 1260 |
$pattern = self::CSS_VAR; |
| 1261 |
// Always set the specified value for properties that use CSS variables |
| 1262 |
// so that an invalid initial value does not prevent re-computation later. |
| 1263 |
$this->_props[$prop] = $val; |
| 1264 |
//TODO: we shouldn't need to parse this twice |
| 1265 |
\preg_match_all("/{$pattern}/", $val, $matches, \PREG_SET_ORDER); |
| 1266 |
foreach ($matches as $match) { |
| 1267 |
if ($this->parse_var($match) === null) { |
| 1268 |
// unset specified as for specific prop under expectation it will be overridden |
| 1269 |
foreach (self::$_props_shorthand[$prop] as $sub_prop) { |
| 1270 |
unset($this->_props_specified[$sub_prop]); |
| 1271 |
} |
| 1272 |
return; |
| 1273 |
} |
| 1274 |
} |
| 1275 |
$val = \preg_replace_callback("/{$pattern}/", [$this, "parse_var"], $val); |
| 1276 |
if (!isset(self::$_methods_cache[$method])) { |
| 1277 |
self::$_methods_cache[$method] = \method_exists($this, $method); |
| 1278 |
} |
| 1279 |
if (self::$_methods_cache[$method]) { |
| 1280 |
$values = $this->{$method}($val); |
| 1281 |
if ($values === []) { |
| 1282 |
return; |
| 1283 |
} |
| 1284 |
// Each missing sub-property is assigned its initial value |
| 1285 |
// https://www.w3.org/TR/css-cascade-3/#shorthand |
| 1286 |
foreach (self::$_props_shorthand[$prop] as $sub_prop) { |
| 1287 |
$sub_val = $values[$sub_prop] ?? self::$_defaults[$sub_prop]; |
| 1288 |
$this->set_prop($sub_prop, $sub_val, $important, $clear_dependencies); |
| 1289 |
unset($this->_props_specified[$sub_prop]); |
| 1290 |
} |
| 1291 |
} |
| 1292 |
} |
| 1293 |
} else { |
| 1294 |
// Legacy support for `word-break: break-word` |
| 1295 |
// https://www.w3.org/TR/css-text-3/#valdef-word-break-break-word |
| 1296 |
if ($prop === "word_break" && \is_string($val) && \strcasecmp($val, "break-word") === 0) { |
| 1297 |
$val = "normal"; |
| 1298 |
$this->set_prop("overflow_wrap", "anywhere", $important, $clear_dependencies); |
| 1299 |
} |
| 1300 |
// `!important` declarations take precedence over normal ones |
| 1301 |
if (!$important && isset($this->_important_props[$prop])) { |
| 1302 |
return; |
| 1303 |
} |
| 1304 |
if ($important) { |
| 1305 |
$this->_important_props[$prop] = \true; |
| 1306 |
} |
| 1307 |
// https://www.w3.org/TR/css-cascade-3/#inherit-initial |
| 1308 |
if ($val === "unset") { |
| 1309 |
$val = isset(self::$_inherited[$prop]) || $this->is_custom_property($prop) ? "inherit" : "initial"; |
| 1310 |
} |
| 1311 |
// https://www.w3.org/TR/css-cascade-3/#valdef-all-initial |
| 1312 |
if ($val === "initial" && !$this->is_custom_property($prop)) { |
| 1313 |
$val = self::$_defaults[$prop]; |
| 1314 |
} |
| 1315 |
// Always set the specified value for properties that use CSS variables |
| 1316 |
// so that an invalid initial value does not prevent re-computation later. |
| 1317 |
if (\is_string($val) && \preg_match("/" . self::CSS_VAR . "/", $val)) { |
| 1318 |
$this->_props[$prop] = $val; |
| 1319 |
} |
| 1320 |
$computed = $this->compute_prop($prop, $val); |
| 1321 |
// Skip invalid declarations |
| 1322 |
if ($computed === null) { |
| 1323 |
return; |
| 1324 |
} |
| 1325 |
$this->_props[$prop] = $val; |
| 1326 |
$this->_props_computed[$prop] = $computed; |
| 1327 |
$this->_props_used[$prop] = null; |
| 1328 |
//TODO: this should be a directed dependency map |
| 1329 |
if ($this->is_custom_property($prop) && !\in_array($prop, $this->_prop_stack, \true)) { |
| 1330 |
\array_push($this->_prop_stack, $prop); |
| 1331 |
$specified_props = \array_filter($this->_props, function ($key) { |
| 1332 |
return \array_key_exists($key, $this->_props_specified); |
| 1333 |
}, \ARRAY_FILTER_USE_KEY); |
| 1334 |
// copy existing props filtered by those set explicitly before parsing vars |
| 1335 |
foreach ($specified_props as $specified_prop => $specified_value) { |
| 1336 |
if (!$this->is_custom_property($specified_prop) || \strpos($specified_value, "var({$prop}") !== \false) { |
| 1337 |
$this->set_prop($specified_prop, $specified_value, isset($this->_important_props[$specified_prop]), \true); |
| 1338 |
if (isset(self::$_props_shorthand[$specified_prop])) { |
| 1339 |
foreach (self::$_props_shorthand[$specified_prop] as $sub_prop) { |
| 1340 |
if (\array_key_exists($sub_prop, $specified_props)) { |
| 1341 |
$this->set_prop($sub_prop, $specified_props[$sub_prop], isset($this->_important_props[$sub_prop]), \true); |
| 1342 |
} |
| 1343 |
} |
| 1344 |
} |
| 1345 |
} |
| 1346 |
} |
| 1347 |
\array_pop($this->_prop_stack); |
| 1348 |
} |
| 1349 |
if ($clear_dependencies) { |
| 1350 |
// Clear the computed values of any dependent properties, so |
| 1351 |
// they can be re-computed |
| 1352 |
if (isset(self::$_dependency_map[$prop])) { |
| 1353 |
foreach (self::$_dependency_map[$prop] as $dependent) { |
| 1354 |
unset($this->_props_computed[$dependent]); |
| 1355 |
unset($this->_props_used[$dependent]); |
| 1356 |
} |
| 1357 |
} |
| 1358 |
$this->clear_cache($prop); |
| 1359 |
} |
| 1360 |
} |
| 1361 |
} |
| 1362 |
/** |
| 1363 |
* Get the specified value of a style property. |
| 1364 |
* |
| 1365 |
* @param string $prop |
| 1366 |
* |
| 1367 |
* @return mixed |
| 1368 |
* @throws Exception |
| 1369 |
*/ |
| 1370 |
public function get_specified(string $prop) |
| 1371 |
{ |
| 1372 |
// Legacy property aliases |
| 1373 |
if (isset(self::$_props_alias[$prop])) { |
| 1374 |
$prop = self::$_props_alias[$prop]; |
| 1375 |
} |
| 1376 |
if (!isset(self::$_defaults[$prop]) && !$this->is_custom_property($prop)) { |
| 1377 |
throw new Exception("'{$prop}' is not a recognized CSS property."); |
| 1378 |
} |
| 1379 |
return $this->_props[$prop] ?? self::$_defaults[$prop]; |
| 1380 |
} |
| 1381 |
/** |
| 1382 |
* Set a style property to its final value. |
| 1383 |
* |
| 1384 |
* This sets the specified and used value of the style property to the given |
| 1385 |
* value, meaning the value is not parsed and thus should have a type |
| 1386 |
* compatible with the property. |
| 1387 |
* |
| 1388 |
* If a shorthand property is specified, all of its sub-properties are set |
| 1389 |
* to the given value. |
| 1390 |
* |
| 1391 |
* @param string $prop The property to set. |
| 1392 |
* @param mixed $val The final value of the property. |
| 1393 |
* |
| 1394 |
* @throws Exception |
| 1395 |
*/ |
| 1396 |
public function __set(string $prop, $val) |
| 1397 |
{ |
| 1398 |
// Legacy property aliases |
| 1399 |
if (isset(self::$_props_alias[$prop])) { |
| 1400 |
$prop = self::$_props_alias[$prop]; |
| 1401 |
} |
| 1402 |
if (!isset(self::$_defaults[$prop]) && !$this->is_custom_property($prop)) { |
| 1403 |
throw new Exception("'{$prop}' is not a recognized CSS property."); |
| 1404 |
} |
| 1405 |
if (isset(self::$_props_shorthand[$prop])) { |
| 1406 |
foreach (self::$_props_shorthand[$prop] as $sub_prop) { |
| 1407 |
$this->__set($sub_prop, $val); |
| 1408 |
} |
| 1409 |
} else { |
| 1410 |
$this->_props[$prop] = $val; |
| 1411 |
$this->_props_computed[$prop] = $val; |
| 1412 |
$this->_props_used[$prop] = $val; |
| 1413 |
$this->clear_cache($prop); |
| 1414 |
} |
| 1415 |
} |
| 1416 |
/** |
| 1417 |
* Set the used value of a style property. |
| 1418 |
* |
| 1419 |
* Used values are cleared on style reset. |
| 1420 |
* |
| 1421 |
* If a shorthand property is specified, all of its sub-properties are set |
| 1422 |
* to the given value. |
| 1423 |
* |
| 1424 |
* @param string $prop The property to set. |
| 1425 |
* @param mixed $val The used value of the property. |
| 1426 |
* |
| 1427 |
* @throws Exception |
| 1428 |
*/ |
| 1429 |
public function set_used(string $prop, $val) : void |
| 1430 |
{ |
| 1431 |
// Legacy property aliases |
| 1432 |
if (isset(self::$_props_alias[$prop])) { |
| 1433 |
$prop = self::$_props_alias[$prop]; |
| 1434 |
} |
| 1435 |
if (!isset(self::$_defaults[$prop])) { |
| 1436 |
throw new Exception("'{$prop}' is not a recognized CSS property."); |
| 1437 |
} |
| 1438 |
if (isset(self::$_props_shorthand[$prop])) { |
| 1439 |
foreach (self::$_props_shorthand[$prop] as $sub_prop) { |
| 1440 |
$this->set_used($sub_prop, $val); |
| 1441 |
} |
| 1442 |
} else { |
| 1443 |
$this->_props_used[$prop] = $val; |
| 1444 |
$this->non_final_used[$prop] = \true; |
| 1445 |
} |
| 1446 |
} |
| 1447 |
/** |
| 1448 |
* Get the used or computed value of a style property, depending on whether |
| 1449 |
* the used value has been determined yet. |
| 1450 |
* |
| 1451 |
* @param string $prop |
| 1452 |
* |
| 1453 |
* @return mixed |
| 1454 |
* @throws Exception |
| 1455 |
*/ |
| 1456 |
public function __get(string $prop) |
| 1457 |
{ |
| 1458 |
// Legacy property aliases |
| 1459 |
if (isset(self::$_props_alias[$prop])) { |
| 1460 |
$prop = self::$_props_alias[$prop]; |
| 1461 |
} |
| 1462 |
if (!isset(self::$_defaults[$prop]) && !$this->is_custom_property($prop)) { |
| 1463 |
throw new Exception("'{$prop}' is not a recognized CSS property."); |
| 1464 |
} |
| 1465 |
if (isset($this->_props_used[$prop])) { |
| 1466 |
return $this->_props_used[$prop]; |
| 1467 |
} |
| 1468 |
$method = "_get_{$prop}"; |
| 1469 |
if (!isset(self::$_methods_cache[$method])) { |
| 1470 |
self::$_methods_cache[$method] = \method_exists($this, $method); |
| 1471 |
} |
| 1472 |
if (isset(self::$_props_shorthand[$prop])) { |
| 1473 |
// Don't cache shorthand values, always use getter. If no dedicated |
| 1474 |
// getter exists, use a simple fallback getter concatenating all |
| 1475 |
// sub-property values |
| 1476 |
if (self::$_methods_cache[$method]) { |
| 1477 |
return $this->{$method}(); |
| 1478 |
} else { |
| 1479 |
return \implode(" ", \array_map(function ($sub_prop) { |
| 1480 |
$val = $this->__get($sub_prop); |
| 1481 |
return \is_array($val) ? \implode(" ", $val) : $val; |
| 1482 |
}, self::$_props_shorthand[$prop])); |
| 1483 |
} |
| 1484 |
} else { |
| 1485 |
$computed = $this->computed($prop); |
| 1486 |
$used = self::$_methods_cache[$method] ? $this->{$method}($computed) : $computed; |
| 1487 |
$this->_props_used[$prop] = $used; |
| 1488 |
return $used; |
| 1489 |
} |
| 1490 |
} |
| 1491 |
/** |
| 1492 |
* @param string $prop The property to compute. |
| 1493 |
* @param mixed $val The value to compute. Non-string values are treated as already computed. |
| 1494 |
* |
| 1495 |
* @return mixed The computed value. |
| 1496 |
*/ |
| 1497 |
protected function compute_prop(string $prop, $val) |
| 1498 |
{ |
| 1499 |
// During style merge, the parent style is not available yet, so |
| 1500 |
// temporarily use the initial value for `inherit` properties. The |
| 1501 |
// keyword is properly resolved during inheritance |
| 1502 |
if ($val === "inherit" && !$this->is_custom_property($prop)) { |
| 1503 |
$val = self::$_defaults[$prop]; |
| 1504 |
} |
| 1505 |
// Check for values which are already computed |
| 1506 |
if (!\is_string($val)) { |
| 1507 |
return $val; |
| 1508 |
} |
| 1509 |
// Resolve the CSS custom property value(s). |
| 1510 |
$pattern = self::CSS_VAR; |
| 1511 |
$val = \preg_replace_callback("/{$pattern}/", [$this, "parse_var"], $val); |
| 1512 |
$method = "_compute_{$prop}"; |
| 1513 |
if (!isset(self::$_methods_cache[$method])) { |
| 1514 |
self::$_methods_cache[$method] = \method_exists($this, $method); |
| 1515 |
} |
| 1516 |
if (self::$_methods_cache[$method]) { |
| 1517 |
return $this->{$method}($val); |
| 1518 |
} elseif ($val !== "") { |
| 1519 |
return \strtolower($val); |
| 1520 |
} else { |
| 1521 |
return null; |
| 1522 |
} |
| 1523 |
} |
| 1524 |
/** |
| 1525 |
* Get the computed value for the given property. |
| 1526 |
* |
| 1527 |
* @param string $prop The property to get the computed value of. |
| 1528 |
* |
| 1529 |
* @return mixed The computed value. |
| 1530 |
*/ |
| 1531 |
protected function computed(string $prop) |
| 1532 |
{ |
| 1533 |
if (!\array_key_exists($prop, $this->_props_computed)) { |
| 1534 |
if (!\array_key_exists($prop, $this->_props) && $this->is_custom_property($prop)) { |
| 1535 |
return null; |
| 1536 |
} |
| 1537 |
$val = $this->_props[$prop] ?? self::$_defaults[$prop]; |
| 1538 |
$computed = $this->compute_prop($prop, $val); |
| 1539 |
if ($computed === null) { |
| 1540 |
if ($this->is_custom_property($prop)) { |
| 1541 |
return null; |
| 1542 |
} |
| 1543 |
$computed = $this->compute_prop($prop, self::$_defaults[$prop]); |
| 1544 |
} |
| 1545 |
$this->_props_computed[$prop] = $computed; |
| 1546 |
} |
| 1547 |
return $this->_props_computed[$prop]; |
| 1548 |
} |
| 1549 |
/** |
| 1550 |
* @param float $cbw The width of the containing block. |
| 1551 |
* @return float|string|null |
| 1552 |
*/ |
| 1553 |
public function computed_bottom_spacing(float $cbw) |
| 1554 |
{ |
| 1555 |
// Caching the bottom spacing independently of the given width is a bit |
| 1556 |
// iffy, but should be okay, as the containing block should only |
| 1557 |
// potentially change after a page break, and the style is reset in that |
| 1558 |
// case |
| 1559 |
if ($this->_computed_bottom_spacing !== null) { |
| 1560 |
return $this->_computed_bottom_spacing; |
| 1561 |
} |
| 1562 |
return $this->_computed_bottom_spacing = $this->length_in_pt([$this->margin_bottom, $this->padding_bottom, $this->border_bottom_width], $cbw); |
| 1563 |
} |
| 1564 |
/** |
| 1565 |
* Returns an `array(r, g, b, "r" => r, "g" => g, "b" => b, "alpha" => alpha, "hex" => "#rrggbb")` |
| 1566 |
* based on the provided CSS color value. |
| 1567 |
* |
| 1568 |
* @param string|null $color |
| 1569 |
* @return array|string|null |
| 1570 |
*/ |
| 1571 |
public function munge_color($color) |
| 1572 |
{ |
| 1573 |
return Color::parse($color); |
| 1574 |
} |
| 1575 |
/** |
| 1576 |
* @return string |
| 1577 |
*/ |
| 1578 |
public function get_font_family_raw() : string |
| 1579 |
{ |
| 1580 |
return \trim($this->_props["font_family"], " \t\n\r\v\"'"); |
| 1581 |
} |
| 1582 |
/** |
| 1583 |
* @return string[] |
| 1584 |
*/ |
| 1585 |
public function get_font_family_computed() : array |
| 1586 |
{ |
| 1587 |
return $this->computed("font_family"); |
| 1588 |
} |
| 1589 |
/** |
| 1590 |
* Getter for the `font-family` CSS property. |
| 1591 |
* |
| 1592 |
* Uses the {@link FontMetrics} class to resolve the font family into an |
| 1593 |
* actual font file. |
| 1594 |
* |
| 1595 |
* @param string[] $computed |
| 1596 |
* @return string |
| 1597 |
* |
| 1598 |
* @throws Exception |
| 1599 |
* |
| 1600 |
* @link https://www.w3.org/TR/CSS21/fonts.html#propdef-font-family |
| 1601 |
*/ |
| 1602 |
protected function _get_font_family($computed) : string |
| 1603 |
{ |
| 1604 |
// TODO: It probably makes sense to perform the font selection outside |
| 1605 |
// the Style class completely. It is now done primarily in |
| 1606 |
// `FrameDecorator\Text::apply_font_mapping` |
| 1607 |
// Select the appropriate font. First determine the subtype, then check |
| 1608 |
// the specified font-families for a candidate. |
| 1609 |
$fontMetrics = $this->getFontMetrics(); |
| 1610 |
$weight = $this->__get("font_weight"); |
| 1611 |
$fontStyle = $this->__get("font_style"); |
| 1612 |
$subtype = $fontMetrics->getType($weight . ' ' . $fontStyle); |
| 1613 |
foreach ($computed as $family) { |
| 1614 |
$font = $fontMetrics->getFont($family, $subtype); |
| 1615 |
if ($font !== null) { |
| 1616 |
return $font; |
| 1617 |
} |
| 1618 |
} |
| 1619 |
$font = $fontMetrics->getFont(null, $subtype); |
| 1620 |
if ($font !== null) { |
| 1621 |
return $font; |
| 1622 |
} |
| 1623 |
$specified = \implode(", ", $computed); |
| 1624 |
throw new Exception("Unable to find a suitable font replacement for: '{$specified}'"); |
| 1625 |
} |
| 1626 |
/** |
| 1627 |
* @param float $computed |
| 1628 |
* @return float |
| 1629 |
* |
| 1630 |
* @link https://www.w3.org/TR/CSS21/fonts.html#propdef-font-size |
| 1631 |
*/ |
| 1632 |
protected function _get_font_size($computed) |
| 1633 |
{ |
| 1634 |
// Computed value may be negative when specified via `calc()` |
| 1635 |
return \max($computed, 0.0); |
| 1636 |
} |
| 1637 |
/** |
| 1638 |
* @param float|string $computed |
| 1639 |
* @return float |
| 1640 |
* |
| 1641 |
* @link https://www.w3.org/TR/css-text-4/#word-spacing-property |
| 1642 |
*/ |
| 1643 |
protected function _get_word_spacing($computed) |
| 1644 |
{ |
| 1645 |
if (\is_float($computed)) { |
| 1646 |
return $computed; |
| 1647 |
} |
| 1648 |
// Resolve percentage values |
| 1649 |
$font_size = $this->__get("font_size"); |
| 1650 |
return $this->single_length_in_pt($computed, $font_size); |
| 1651 |
} |
| 1652 |
/** |
| 1653 |
* @param float|string $computed |
| 1654 |
* @return float |
| 1655 |
* |
| 1656 |
* @link https://www.w3.org/TR/css-text-4/#letter-spacing-property |
| 1657 |
*/ |
| 1658 |
protected function _get_letter_spacing($computed) |
| 1659 |
{ |
| 1660 |
if (\is_float($computed)) { |
| 1661 |
return $computed; |
| 1662 |
} |
| 1663 |
// Resolve percentage values |
| 1664 |
$font_size = $this->__get("font_size"); |
| 1665 |
return $this->single_length_in_pt($computed, $font_size); |
| 1666 |
} |
| 1667 |
/** |
| 1668 |
* @param float|string $computed |
| 1669 |
* @return float |
| 1670 |
* |
| 1671 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-line-height |
| 1672 |
*/ |
| 1673 |
protected function _get_line_height($computed) |
| 1674 |
{ |
| 1675 |
// Lengths have been computed to float, number values to string |
| 1676 |
if (\is_float($computed)) { |
| 1677 |
// Computed value may be negative when specified via `calc()` |
| 1678 |
return \max($computed, 0.0); |
| 1679 |
} |
| 1680 |
$font_size = $this->__get("font_size"); |
| 1681 |
$factor = $computed === "normal" ? self::$default_line_height : (float) $computed; |
| 1682 |
return $factor * $font_size; |
| 1683 |
} |
| 1684 |
/** |
| 1685 |
* @param string $computed |
| 1686 |
* @param bool $current_is_parent |
| 1687 |
* |
| 1688 |
* @return array|string |
| 1689 |
*/ |
| 1690 |
protected function get_color_value($computed, bool $current_is_parent = \false) |
| 1691 |
{ |
| 1692 |
if ($computed === "currentcolor") { |
| 1693 |
// https://www.w3.org/TR/css-color-4/#resolving-other-colors |
| 1694 |
if ($current_is_parent) { |
| 1695 |
// Use the `color` value from the parent for the `color` |
| 1696 |
// property itself |
| 1697 |
return isset($this->parent_style) ? $this->parent_style->__get("color") : $this->munge_color(self::$_defaults["color"]); |
| 1698 |
} |
| 1699 |
return $this->__get("color"); |
| 1700 |
} |
| 1701 |
return $this->munge_color($computed) ?? "transparent"; |
| 1702 |
} |
| 1703 |
/** |
| 1704 |
* Returns the color as an array |
| 1705 |
* |
| 1706 |
* The array has the following format: |
| 1707 |
* `array(r, g, b, "r" => r, "g" => g, "b" => b, "alpha" => alpha, "hex" => "#rrggbb")` |
| 1708 |
* |
| 1709 |
* @param string $computed |
| 1710 |
* @return array|string |
| 1711 |
* |
| 1712 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-color |
| 1713 |
*/ |
| 1714 |
protected function _get_color($computed) |
| 1715 |
{ |
| 1716 |
return $this->get_color_value($computed, \true); |
| 1717 |
} |
| 1718 |
/** |
| 1719 |
* Returns the background color as an array |
| 1720 |
* |
| 1721 |
* See {@link Style::_get_color()} for format of the color array. |
| 1722 |
* |
| 1723 |
* @param string $computed |
| 1724 |
* @return array|string |
| 1725 |
* |
| 1726 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-color |
| 1727 |
*/ |
| 1728 |
protected function _get_background_color($computed) |
| 1729 |
{ |
| 1730 |
return $this->get_color_value($computed); |
| 1731 |
} |
| 1732 |
/** |
| 1733 |
* Returns the background image URI, or "none" |
| 1734 |
* |
| 1735 |
* @param string $computed |
| 1736 |
* @return string |
| 1737 |
* |
| 1738 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-image |
| 1739 |
*/ |
| 1740 |
protected function _get_background_image($computed) : string |
| 1741 |
{ |
| 1742 |
return $this->_stylesheet->resolve_url($computed, \true); |
| 1743 |
} |
| 1744 |
/** |
| 1745 |
* Returns the border color as an array |
| 1746 |
* |
| 1747 |
* See {@link Style::_get_color()} for format of the color array. |
| 1748 |
* |
| 1749 |
* @param string $computed |
| 1750 |
* @return array|string |
| 1751 |
* |
| 1752 |
* @link https://www.w3.org/TR/CSS21/box.html#border-color-properties |
| 1753 |
*/ |
| 1754 |
protected function _get_border_top_color($computed) |
| 1755 |
{ |
| 1756 |
return $this->get_color_value($computed); |
| 1757 |
} |
| 1758 |
/** |
| 1759 |
* @param string $computed |
| 1760 |
* @return array|string |
| 1761 |
*/ |
| 1762 |
protected function _get_border_right_color($computed) |
| 1763 |
{ |
| 1764 |
return $this->get_color_value($computed); |
| 1765 |
} |
| 1766 |
/** |
| 1767 |
* @param string $computed |
| 1768 |
* @return array|string |
| 1769 |
*/ |
| 1770 |
protected function _get_border_bottom_color($computed) |
| 1771 |
{ |
| 1772 |
return $this->get_color_value($computed); |
| 1773 |
} |
| 1774 |
/** |
| 1775 |
* @param string $computed |
| 1776 |
* @return array|string |
| 1777 |
*/ |
| 1778 |
protected function _get_border_left_color($computed) |
| 1779 |
{ |
| 1780 |
return $this->get_color_value($computed); |
| 1781 |
} |
| 1782 |
/** |
| 1783 |
* Return an array of all border properties. |
| 1784 |
* |
| 1785 |
* The returned array has the following structure: |
| 1786 |
* |
| 1787 |
* ``` |
| 1788 |
* array("top" => array("width" => [border-width], |
| 1789 |
* "style" => [border-style], |
| 1790 |
* "color" => [border-color (array)]), |
| 1791 |
* "bottom" ... ) |
| 1792 |
* ``` |
| 1793 |
* |
| 1794 |
* @return array |
| 1795 |
*/ |
| 1796 |
public function get_border_properties() : array |
| 1797 |
{ |
| 1798 |
return ["top" => ["width" => $this->__get("border_top_width"), "style" => $this->__get("border_top_style"), "color" => $this->__get("border_top_color")], "bottom" => ["width" => $this->__get("border_bottom_width"), "style" => $this->__get("border_bottom_style"), "color" => $this->__get("border_bottom_color")], "right" => ["width" => $this->__get("border_right_width"), "style" => $this->__get("border_right_style"), "color" => $this->__get("border_right_color")], "left" => ["width" => $this->__get("border_left_width"), "style" => $this->__get("border_left_style"), "color" => $this->__get("border_left_color")]]; |
| 1799 |
} |
| 1800 |
/** |
| 1801 |
* Return a single border-side property |
| 1802 |
* |
| 1803 |
* @param string $side |
| 1804 |
* @return string |
| 1805 |
*/ |
| 1806 |
protected function get_border_side(string $side) : string |
| 1807 |
{ |
| 1808 |
$color = $this->__get("border_{$side}_color"); |
| 1809 |
return $this->__get("border_{$side}_width") . " " . $this->__get("border_{$side}_style") . " " . (\is_array($color) ? $color["hex"] : $color); |
| 1810 |
} |
| 1811 |
/** |
| 1812 |
* Return full border properties as a string |
| 1813 |
* |
| 1814 |
* Border properties are returned just as specified in CSS: |
| 1815 |
* `[width] [style] [color]` |
| 1816 |
* e.g. "1px solid blue" |
| 1817 |
* |
| 1818 |
* @return string |
| 1819 |
* |
| 1820 |
* @link https://www.w3.org/TR/CSS21/box.html#border-shorthand-properties |
| 1821 |
*/ |
| 1822 |
protected function _get_border_top() : string |
| 1823 |
{ |
| 1824 |
return $this->get_border_side("top"); |
| 1825 |
} |
| 1826 |
/** |
| 1827 |
* @return string |
| 1828 |
*/ |
| 1829 |
protected function _get_border_right() : string |
| 1830 |
{ |
| 1831 |
return $this->get_border_side("right"); |
| 1832 |
} |
| 1833 |
/** |
| 1834 |
* @return string |
| 1835 |
*/ |
| 1836 |
protected function _get_border_bottom() : string |
| 1837 |
{ |
| 1838 |
return $this->get_border_side("bottom"); |
| 1839 |
} |
| 1840 |
/** |
| 1841 |
* @return string |
| 1842 |
*/ |
| 1843 |
protected function _get_border_left() : string |
| 1844 |
{ |
| 1845 |
return $this->get_border_side("left"); |
| 1846 |
} |
| 1847 |
public function has_border_radius() : bool |
| 1848 |
{ |
| 1849 |
if (isset($this->has_border_radius_cache)) { |
| 1850 |
return $this->has_border_radius_cache; |
| 1851 |
} |
| 1852 |
// Use a fixed ref size here. We don't know the border-box width here |
| 1853 |
// and font size might be 0. Since we are only interested in whether |
| 1854 |
// there is any border radius at all, this should do |
| 1855 |
$tl = (float) $this->length_in_pt($this->border_top_left_radius, 12); |
| 1856 |
$tr = (float) $this->length_in_pt($this->border_top_right_radius, 12); |
| 1857 |
$br = (float) $this->length_in_pt($this->border_bottom_right_radius, 12); |
| 1858 |
$bl = (float) $this->length_in_pt($this->border_bottom_left_radius, 12); |
| 1859 |
$this->has_border_radius_cache = $tl + $tr + $br + $bl > 0; |
| 1860 |
return $this->has_border_radius_cache; |
| 1861 |
} |
| 1862 |
/** |
| 1863 |
* Get the final border-radius values to use. |
| 1864 |
* |
| 1865 |
* Percentage values are resolved relative to the width of the border box. |
| 1866 |
* The border radius is additionally scaled for the given render box, and |
| 1867 |
* constrained by its width and height. |
| 1868 |
* |
| 1869 |
* @param float[] $border_box The border box of the frame. |
| 1870 |
* @param float[]|null $render_box The box to resolve the border radius for. |
| 1871 |
* |
| 1872 |
* @return float[] A 4-tuple of top-left, top-right, bottom-right, and bottom-left radius. |
| 1873 |
*/ |
| 1874 |
public function resolve_border_radius(array $border_box, ?array $render_box = null) : array |
| 1875 |
{ |
| 1876 |
$render_box = $render_box ?? $border_box; |
| 1877 |
$use_cache = $render_box === $border_box; |
| 1878 |
if ($use_cache && isset($this->resolved_border_radius)) { |
| 1879 |
return $this->resolved_border_radius; |
| 1880 |
} |
| 1881 |
[$x, $y, $w, $h] = $border_box; |
| 1882 |
// Resolve percentages relative to width, as long as we have no support |
| 1883 |
// for per-axis radii |
| 1884 |
$tl = (float) $this->length_in_pt($this->border_top_left_radius, $w); |
| 1885 |
$tr = (float) $this->length_in_pt($this->border_top_right_radius, $w); |
| 1886 |
$br = (float) $this->length_in_pt($this->border_bottom_right_radius, $w); |
| 1887 |
$bl = (float) $this->length_in_pt($this->border_bottom_left_radius, $w); |
| 1888 |
if ($tl + $tr + $br + $bl > 0) { |
| 1889 |
[$rx, $ry, $rw, $rh] = $render_box; |
| 1890 |
$t_offset = $y - $ry; |
| 1891 |
$r_offset = $rx + $rw - $x - $w; |
| 1892 |
$b_offset = $ry + $rh - $y - $h; |
| 1893 |
$l_offset = $x - $rx; |
| 1894 |
if ($tl > 0) { |
| 1895 |
$tl = \max($tl + ($t_offset + $l_offset) / 2, 0); |
| 1896 |
} |
| 1897 |
if ($tr > 0) { |
| 1898 |
$tr = \max($tr + ($t_offset + $r_offset) / 2, 0); |
| 1899 |
} |
| 1900 |
if ($br > 0) { |
| 1901 |
$br = \max($br + ($b_offset + $r_offset) / 2, 0); |
| 1902 |
} |
| 1903 |
if ($bl > 0) { |
| 1904 |
$bl = \max($bl + ($b_offset + $l_offset) / 2, 0); |
| 1905 |
} |
| 1906 |
if ($tl + $bl > $rh) { |
| 1907 |
$f = $rh / ($tl + $bl); |
| 1908 |
$tl = $f * $tl; |
| 1909 |
$bl = $f * $bl; |
| 1910 |
} |
| 1911 |
if ($tr + $br > $rh) { |
| 1912 |
$f = $rh / ($tr + $br); |
| 1913 |
$tr = $f * $tr; |
| 1914 |
$br = $f * $br; |
| 1915 |
} |
| 1916 |
if ($tl + $tr > $rw) { |
| 1917 |
$f = $rw / ($tl + $tr); |
| 1918 |
$tl = $f * $tl; |
| 1919 |
$tr = $f * $tr; |
| 1920 |
} |
| 1921 |
if ($bl + $br > $rw) { |
| 1922 |
$f = $rw / ($bl + $br); |
| 1923 |
$bl = $f * $bl; |
| 1924 |
$br = $f * $br; |
| 1925 |
} |
| 1926 |
} |
| 1927 |
$values = [$tl, $tr, $br, $bl]; |
| 1928 |
if ($use_cache) { |
| 1929 |
$this->resolved_border_radius = $values; |
| 1930 |
} |
| 1931 |
return $values; |
| 1932 |
} |
| 1933 |
/** |
| 1934 |
* Returns the outline color as an array |
| 1935 |
* |
| 1936 |
* See {@link Style::_get_color()} for format of the color array. |
| 1937 |
* |
| 1938 |
* @param string $computed |
| 1939 |
* @return array|string |
| 1940 |
* |
| 1941 |
* @link https://www.w3.org/TR/css-ui-4/#propdef-outline-color |
| 1942 |
*/ |
| 1943 |
protected function _get_outline_color($computed) |
| 1944 |
{ |
| 1945 |
return $this->get_color_value($computed); |
| 1946 |
} |
| 1947 |
/** |
| 1948 |
* @param string $computed |
| 1949 |
* @return string |
| 1950 |
* |
| 1951 |
* @link https://www.w3.org/TR/css-ui-4/#propdef-outline-style |
| 1952 |
*/ |
| 1953 |
protected function _get_outline_style($computed) : string |
| 1954 |
{ |
| 1955 |
return $computed === "auto" ? "solid" : $computed; |
| 1956 |
} |
| 1957 |
/** |
| 1958 |
* Return full outline properties as a string |
| 1959 |
* |
| 1960 |
* Outline properties are returned just as specified in CSS: |
| 1961 |
* `[width] [style] [color]` |
| 1962 |
* e.g. "1px solid blue" |
| 1963 |
* |
| 1964 |
* @return string |
| 1965 |
* |
| 1966 |
* @link https://www.w3.org/TR/CSS21/box.html#border-shorthand-properties |
| 1967 |
*/ |
| 1968 |
protected function _get_outline() : string |
| 1969 |
{ |
| 1970 |
$color = $this->__get("outline_color"); |
| 1971 |
return $this->__get("outline_width") . " " . $this->__get("outline_style") . " " . (\is_array($color) ? $color["hex"] : $color); |
| 1972 |
} |
| 1973 |
/** |
| 1974 |
* Returns the list style image URI, or "none" |
| 1975 |
* |
| 1976 |
* @param string $computed |
| 1977 |
* @return string |
| 1978 |
* |
| 1979 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-list-style-image |
| 1980 |
*/ |
| 1981 |
protected function _get_list_style_image($computed) : string |
| 1982 |
{ |
| 1983 |
return $this->_stylesheet->resolve_url($computed, \true); |
| 1984 |
} |
| 1985 |
/** |
| 1986 |
* @param array|string $computed |
| 1987 |
* @return array|string |
| 1988 |
* |
| 1989 |
* @link https://www.w3.org/TR/css-content-3/#quotes |
| 1990 |
*/ |
| 1991 |
protected function _get_quotes($computed) |
| 1992 |
{ |
| 1993 |
if ($computed === "auto") { |
| 1994 |
// TODO: Use typographically appropriate quotes for the current |
| 1995 |
// language here |
| 1996 |
return [['"', '"'], ["'", "'"]]; |
| 1997 |
} |
| 1998 |
return $computed; |
| 1999 |
} |
| 2000 |
/*==============================*/ |
| 2001 |
/** |
| 2002 |
* Parse a property value into its components. |
| 2003 |
* |
| 2004 |
* @param string $value |
| 2005 |
* |
| 2006 |
* @return string[] |
| 2007 |
*/ |
| 2008 |
protected function parse_property_value(string $value) : array |
| 2009 |
{ |
| 2010 |
$string = self::CSS_STRING; |
| 2011 |
$ident = self::CSS_IDENTIFIER; |
| 2012 |
$number = self::CSS_NUMBER; |
| 2013 |
$pattern = "/\n" . "\\s* (?<string>{$string}) |\n" . "\\s* (url \\( (?> (\\\\[\"'()] | [^\"'()])* ) (?<!\\\\)\\) ) |\n" . "\\s* ({$ident} (\\( ((?> \\g<string> | [^\"'()]+ ) | (?-2))* \\)) ) |\n" . "\\s* ({$ident}) |\n" . "\\s* (\\#[0-9a-fA-F]*) |\n" . "\\s* ({$number} [a-zA-Z%]*) |\n" . "\\s* ([\\/,;]) \n" . "/iSx"; |
| 2014 |
if (!\preg_match_all($pattern, $value, $matches)) { |
| 2015 |
return []; |
| 2016 |
} |
| 2017 |
return \array_map("trim", $matches[0]); |
| 2018 |
} |
| 2019 |
protected function is_color_value(string $val) : bool |
| 2020 |
{ |
| 2021 |
return $val === "currentcolor" || $val === "transparent" || isset(Color::$cssColorNames[$val]) || \preg_match("/^#|rgb\\(|rgba\\(|cmyk\\(/", $val); |
| 2022 |
} |
| 2023 |
/** |
| 2024 |
* @param string $val |
| 2025 |
* @return string|null |
| 2026 |
*/ |
| 2027 |
protected function compute_color_value(string $val) : ?string |
| 2028 |
{ |
| 2029 |
// https://www.w3.org/TR/css-color-4/#resolving-other-colors |
| 2030 |
$val = \strtolower($val); |
| 2031 |
$munged_color = $val !== "currentcolor" ? $this->munge_color($val) : $val; |
| 2032 |
if ($munged_color === null) { |
| 2033 |
return null; |
| 2034 |
} |
| 2035 |
return \is_array($munged_color) ? $munged_color["hex"] : $munged_color; |
| 2036 |
} |
| 2037 |
/** |
| 2038 |
* @param string $val |
| 2039 |
* @return int|null |
| 2040 |
*/ |
| 2041 |
protected function compute_integer(string $val) : ?int |
| 2042 |
{ |
| 2043 |
$integer = self::CSS_INTEGER; |
| 2044 |
return \preg_match("/^{$integer}\$/", $val) ? (int) $val : null; |
| 2045 |
} |
| 2046 |
/** |
| 2047 |
* @param string $val |
| 2048 |
* @return float|null |
| 2049 |
*/ |
| 2050 |
protected function compute_number(string $val) : ?float |
| 2051 |
{ |
| 2052 |
$number = self::CSS_NUMBER; |
| 2053 |
return \preg_match("/^{$number}\$/", $val) ? (float) $val : null; |
| 2054 |
} |
| 2055 |
/** |
| 2056 |
* @param string $val |
| 2057 |
* @return float|null |
| 2058 |
*/ |
| 2059 |
protected function compute_length(string $val) : ?float |
| 2060 |
{ |
| 2061 |
return \strpos($val, "%") === \false ? $this->single_length_in_pt($val) : null; |
| 2062 |
} |
| 2063 |
/** |
| 2064 |
* @param string $val |
| 2065 |
* @return float|null |
| 2066 |
*/ |
| 2067 |
protected function compute_length_positive(string $val) : ?float |
| 2068 |
{ |
| 2069 |
$computed = $this->compute_length($val); |
| 2070 |
// Negative non-`calc` values are invalid |
| 2071 |
if ($computed === null || $computed < 0 && !\preg_match("/^-?[_a-zA-Z]/", $val)) { |
| 2072 |
return null; |
| 2073 |
} |
| 2074 |
return $computed; |
| 2075 |
} |
| 2076 |
/** |
| 2077 |
* @param string $val |
| 2078 |
* @return float|string|null |
| 2079 |
*/ |
| 2080 |
protected function compute_length_percentage(string $val) |
| 2081 |
{ |
| 2082 |
// Compute with a fixed ref size to decide whether percentage values |
| 2083 |
// are valid |
| 2084 |
$computed = $this->single_length_in_pt($val, 12); |
| 2085 |
if ($computed === null) { |
| 2086 |
return null; |
| 2087 |
} |
| 2088 |
// Retain valid percentage declarations |
| 2089 |
return \strpos($val, "%") === \false ? $computed : $val; |
| 2090 |
} |
| 2091 |
/** |
| 2092 |
* @param string $val |
| 2093 |
* @return float|string|null |
| 2094 |
*/ |
| 2095 |
protected function compute_length_percentage_positive(string $val) |
| 2096 |
{ |
| 2097 |
// Compute with a fixed ref size to decide whether percentage values |
| 2098 |
// are valid |
| 2099 |
$computed = $this->single_length_in_pt($val, 12); |
| 2100 |
// Negative non-`calc` values are invalid |
| 2101 |
if ($computed === null || $computed < 0 && !\preg_match("/^-?[_a-zA-Z]/", $val)) { |
| 2102 |
return null; |
| 2103 |
} |
| 2104 |
// Retain valid percentage declarations |
| 2105 |
return \strpos($val, "%") === \false ? $computed : $val; |
| 2106 |
} |
| 2107 |
/** |
| 2108 |
* @param string $val |
| 2109 |
* @param string $style_prop The corresponding border-/outline-style property. |
| 2110 |
* |
| 2111 |
* @return float|null |
| 2112 |
* |
| 2113 |
* @link https://www.w3.org/TR/css-backgrounds-3/#typedef-line-width |
| 2114 |
*/ |
| 2115 |
protected function compute_line_width(string $val, string $style_prop) : ?float |
| 2116 |
{ |
| 2117 |
$val = \strtolower($val); |
| 2118 |
// Border-width keywords |
| 2119 |
if ($val === "thin") { |
| 2120 |
$computed = 0.5; |
| 2121 |
} elseif ($val === "medium") { |
| 2122 |
$computed = 1.5; |
| 2123 |
} elseif ($val === "thick") { |
| 2124 |
$computed = 2.5; |
| 2125 |
} else { |
| 2126 |
$computed = $this->compute_length_positive($val); |
| 2127 |
} |
| 2128 |
if ($computed === null) { |
| 2129 |
return null; |
| 2130 |
} |
| 2131 |
// Computed width is 0 if the line style is `none` or `hidden` |
| 2132 |
// https://www.w3.org/TR/css-backgrounds-3/#border-width |
| 2133 |
// https://www.w3.org/TR/css-ui-4/#outline-width |
| 2134 |
$lineStyle = $this->__get($style_prop); |
| 2135 |
$hasLineStyle = $lineStyle !== "none" && $lineStyle !== "hidden"; |
| 2136 |
return $hasLineStyle ? $computed : 0.0; |
| 2137 |
} |
| 2138 |
/** |
| 2139 |
* @param string $val |
| 2140 |
* @return string|null |
| 2141 |
*/ |
| 2142 |
protected function compute_border_style(string $val) : ?string |
| 2143 |
{ |
| 2144 |
$val = \strtolower($val); |
| 2145 |
return \in_array($val, self::BORDER_STYLES, \true) ? $val : null; |
| 2146 |
} |
| 2147 |
/** |
| 2148 |
* @param string $val |
| 2149 |
* @return float|null |
| 2150 |
* |
| 2151 |
* @link https://www.w3.org/TR/css3-values/#angles |
| 2152 |
*/ |
| 2153 |
protected function compute_angle_or_zero(string $val) : ?float |
| 2154 |
{ |
| 2155 |
$number = self::CSS_NUMBER; |
| 2156 |
$pattern = "/^({$number})(deg|grad|rad|turn)?\$/i"; |
| 2157 |
if (!\preg_match($pattern, $val, $matches)) { |
| 2158 |
return null; |
| 2159 |
} |
| 2160 |
$v = (float) $matches[1]; |
| 2161 |
$unit = \strtolower($matches[2] ?? ""); |
| 2162 |
switch ($unit) { |
| 2163 |
case "deg": |
| 2164 |
return $v; |
| 2165 |
case "grad": |
| 2166 |
return $v * 0.9; |
| 2167 |
case "rad": |
| 2168 |
return \rad2deg($v); |
| 2169 |
case "turn": |
| 2170 |
return $v * 360; |
| 2171 |
default: |
| 2172 |
return $v === 0.0 ? $v : null; |
| 2173 |
} |
| 2174 |
} |
| 2175 |
/** |
| 2176 |
* Common computation logic for `background-position` and `transform-origin`. |
| 2177 |
* |
| 2178 |
* @param string $v1 |
| 2179 |
* @param string $v2 |
| 2180 |
* |
| 2181 |
* @return (float|string|null)[] |
| 2182 |
*/ |
| 2183 |
protected function computeBackgroundPositionTransformOrigin(string $v1, string $v2) : array |
| 2184 |
{ |
| 2185 |
$x = null; |
| 2186 |
$y = null; |
| 2187 |
switch ($v1) { |
| 2188 |
case "left": |
| 2189 |
$x = 0.0; |
| 2190 |
break; |
| 2191 |
case "right": |
| 2192 |
$x = "100%"; |
| 2193 |
break; |
| 2194 |
case "top": |
| 2195 |
$y = 0.0; |
| 2196 |
break; |
| 2197 |
case "bottom": |
| 2198 |
$y = "100%"; |
| 2199 |
break; |
| 2200 |
case "center": |
| 2201 |
if ($v2 === "left" || $v2 === "right") { |
| 2202 |
$y = "50%"; |
| 2203 |
} else { |
| 2204 |
$x = "50%"; |
| 2205 |
} |
| 2206 |
break; |
| 2207 |
default: |
| 2208 |
$x = $this->compute_length_percentage($v1); |
| 2209 |
break; |
| 2210 |
} |
| 2211 |
switch ($v2) { |
| 2212 |
case "left": |
| 2213 |
$x = 0.0; |
| 2214 |
break; |
| 2215 |
case "right": |
| 2216 |
$x = "100%"; |
| 2217 |
break; |
| 2218 |
case "top": |
| 2219 |
$y = 0.0; |
| 2220 |
break; |
| 2221 |
case "bottom": |
| 2222 |
$y = "100%"; |
| 2223 |
break; |
| 2224 |
case "center": |
| 2225 |
if ($v1 === "top" || $v1 === "bottom") { |
| 2226 |
$x = "50%"; |
| 2227 |
} else { |
| 2228 |
$y = "50%"; |
| 2229 |
} |
| 2230 |
break; |
| 2231 |
default: |
| 2232 |
$y = $this->compute_length_percentage($v2); |
| 2233 |
break; |
| 2234 |
} |
| 2235 |
return [$x, $y]; |
| 2236 |
} |
| 2237 |
/** |
| 2238 |
* @link https://www.w3.org/TR/css-lists-3/#typedef-counter-name |
| 2239 |
*/ |
| 2240 |
protected function isValidCounterName(string $name) : bool |
| 2241 |
{ |
| 2242 |
return $name !== "none" && !\in_array($name, self::CUSTOM_IDENT_FORBIDDEN, \true); |
| 2243 |
} |
| 2244 |
/** |
| 2245 |
* @link https://www.w3.org/TR/css-counter-styles-3/#typedef-counter-style-name |
| 2246 |
*/ |
| 2247 |
protected function isValidCounterStyleName(string $name) : bool |
| 2248 |
{ |
| 2249 |
return $name !== "none" && !\in_array($name, self::CUSTOM_IDENT_FORBIDDEN, \true); |
| 2250 |
} |
| 2251 |
/** |
| 2252 |
* Parse a property value with 1 to 4 components into 4 values, as required |
| 2253 |
* by shorthand properties such as `margin`, `padding`, and `border-radius`. |
| 2254 |
* |
| 2255 |
* @param string $prop The shorthand property with exactly 4 sub-properties to handle. |
| 2256 |
* @param string $value The property value to parse. |
| 2257 |
* |
| 2258 |
* @return string[] |
| 2259 |
*/ |
| 2260 |
protected function set_quad_shorthand(string $prop, string $value) : array |
| 2261 |
{ |
| 2262 |
$v = $this->parse_property_value($value); |
| 2263 |
switch (\count($v)) { |
| 2264 |
case 1: |
| 2265 |
$values = [$v[0], $v[0], $v[0], $v[0]]; |
| 2266 |
break; |
| 2267 |
case 2: |
| 2268 |
$values = [$v[0], $v[1], $v[0], $v[1]]; |
| 2269 |
break; |
| 2270 |
case 3: |
| 2271 |
$values = [$v[0], $v[1], $v[2], $v[1]]; |
| 2272 |
break; |
| 2273 |
case 4: |
| 2274 |
$values = [$v[0], $v[1], $v[2], $v[3]]; |
| 2275 |
break; |
| 2276 |
default: |
| 2277 |
return []; |
| 2278 |
} |
| 2279 |
return \array_combine(self::$_props_shorthand[$prop], $values); |
| 2280 |
} |
| 2281 |
/*======================*/ |
| 2282 |
/** |
| 2283 |
* @link https://www.w3.org/TR/CSS21/visuren.html#display-prop |
| 2284 |
*/ |
| 2285 |
protected function _compute_display(string $val) |
| 2286 |
{ |
| 2287 |
$val = \strtolower($val); |
| 2288 |
// Make sure that common valid, but unsupported display types have an |
| 2289 |
// appropriate fallback display type |
| 2290 |
switch ($val) { |
| 2291 |
case "flow-root": |
| 2292 |
case "flex": |
| 2293 |
case "grid": |
| 2294 |
case "table-caption": |
| 2295 |
$val = "block"; |
| 2296 |
break; |
| 2297 |
case "inline-flex": |
| 2298 |
case "inline-grid": |
| 2299 |
$val = "inline-block"; |
| 2300 |
break; |
| 2301 |
} |
| 2302 |
if (!isset(self::$valid_display_types[$val])) { |
| 2303 |
return null; |
| 2304 |
} |
| 2305 |
// https://www.w3.org/TR/CSS21/visuren.html#dis-pos-flo |
| 2306 |
if ($this->is_in_flow()) { |
| 2307 |
return $val; |
| 2308 |
} else { |
| 2309 |
switch ($val) { |
| 2310 |
case "inline": |
| 2311 |
case "inline-block": |
| 2312 |
// case "table-row-group": |
| 2313 |
// case "table-header-group": |
| 2314 |
// case "table-footer-group": |
| 2315 |
// case "table-row": |
| 2316 |
// case "table-cell": |
| 2317 |
// case "table-column-group": |
| 2318 |
// case "table-column": |
| 2319 |
// case "table-caption": |
| 2320 |
return "block"; |
| 2321 |
case "inline-table": |
| 2322 |
return "table"; |
| 2323 |
default: |
| 2324 |
return $val; |
| 2325 |
} |
| 2326 |
} |
| 2327 |
} |
| 2328 |
/** |
| 2329 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-color |
| 2330 |
*/ |
| 2331 |
protected function _compute_color(string $color) |
| 2332 |
{ |
| 2333 |
return $this->compute_color_value($color); |
| 2334 |
} |
| 2335 |
/** |
| 2336 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-color |
| 2337 |
*/ |
| 2338 |
protected function _compute_background_color(string $color) |
| 2339 |
{ |
| 2340 |
return $this->compute_color_value($color); |
| 2341 |
} |
| 2342 |
/** |
| 2343 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-image |
| 2344 |
*/ |
| 2345 |
protected function _compute_background_image(string $val) |
| 2346 |
{ |
| 2347 |
$parsed_val = $this->_stylesheet->resolve_url($val); |
| 2348 |
if ($parsed_val === "none") { |
| 2349 |
return "none"; |
| 2350 |
} else { |
| 2351 |
return "url(\"" . \str_replace("\"", "\\\"", $parsed_val) . "\")"; |
| 2352 |
} |
| 2353 |
} |
| 2354 |
/** |
| 2355 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-repeat |
| 2356 |
*/ |
| 2357 |
protected function _compute_background_repeat(string $val) |
| 2358 |
{ |
| 2359 |
$keywords = ["repeat", "repeat-x", "repeat-y", "no-repeat"]; |
| 2360 |
$val = \strtolower($val); |
| 2361 |
return \in_array($val, $keywords, \true) ? $val : null; |
| 2362 |
} |
| 2363 |
/** |
| 2364 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-attachment |
| 2365 |
*/ |
| 2366 |
protected function _compute_background_attachment(string $val) |
| 2367 |
{ |
| 2368 |
$keywords = ["scroll", "fixed"]; |
| 2369 |
$val = \strtolower($val); |
| 2370 |
return \in_array($val, $keywords, \true) ? $val : null; |
| 2371 |
} |
| 2372 |
/** |
| 2373 |
* @link https://www.w3.org/TR/CSS21/colors.html#propdef-background-position |
| 2374 |
*/ |
| 2375 |
protected function _compute_background_position(string $val) |
| 2376 |
{ |
| 2377 |
$val = \strtolower($val); |
| 2378 |
$parts = $this->parse_property_value($val); |
| 2379 |
$count = \count($parts); |
| 2380 |
if ($count === 0 || $count > 2) { |
| 2381 |
return null; |
| 2382 |
} |
| 2383 |
$v1 = $parts[0]; |
| 2384 |
$v2 = $parts[1] ?? "center"; |
| 2385 |
[$x, $y] = $this->computeBackgroundPositionTransformOrigin($v1, $v2); |
| 2386 |
if ($x === null || $y === null) { |
| 2387 |
return null; |
| 2388 |
} |
| 2389 |
return [$x, $y]; |
| 2390 |
} |
| 2391 |
/** |
| 2392 |
* Compute `background-size`. |
| 2393 |
* |
| 2394 |
* Computes to one of the following values: |
| 2395 |
* * `cover` |
| 2396 |
* * `contain` |
| 2397 |
* * `[width, height]`, each being a length, percentage, or `auto` |
| 2398 |
* |
| 2399 |
* @link https://www.w3.org/TR/css-backgrounds-3/#background-size |
| 2400 |
*/ |
| 2401 |
protected function _compute_background_size(string $val) |
| 2402 |
{ |
| 2403 |
$val = \strtolower($val); |
| 2404 |
if ($val === "cover" || $val === "contain") { |
| 2405 |
return $val; |
| 2406 |
} |
| 2407 |
$parts = $this->parse_property_value($val); |
| 2408 |
$count = \count($parts); |
| 2409 |
if ($count === 0 || $count > 2) { |
| 2410 |
return null; |
| 2411 |
} |
| 2412 |
$width = $parts[0]; |
| 2413 |
if ($width !== "auto") { |
| 2414 |
$width = $this->compute_length_percentage_positive($width); |
| 2415 |
} |
| 2416 |
$height = $parts[1] ?? "auto"; |
| 2417 |
if ($height !== "auto") { |
| 2418 |
$height = $this->compute_length_percentage_positive($height); |
| 2419 |
} |
| 2420 |
if ($width === null || $height === null) { |
| 2421 |
return null; |
| 2422 |
} |
| 2423 |
return [$width, $height]; |
| 2424 |
} |
| 2425 |
/** |
| 2426 |
* @link https://www.w3.org/TR/css-backgrounds-3/#propdef-background |
| 2427 |
*/ |
| 2428 |
protected function _set_background(string $value) : array |
| 2429 |
{ |
| 2430 |
$components = $this->parse_property_value($value); |
| 2431 |
$props = []; |
| 2432 |
$pos_size = []; |
| 2433 |
foreach ($components as $val) { |
| 2434 |
$lower = \strtolower($val); |
| 2435 |
if ($lower === "none") { |
| 2436 |
$props["background_image"] = $lower; |
| 2437 |
} elseif (\strncmp($lower, "url(", 4) === 0) { |
| 2438 |
$props["background_image"] = $val; |
| 2439 |
} elseif ($lower === "scroll" || $lower === "fixed") { |
| 2440 |
$props["background_attachment"] = $lower; |
| 2441 |
} elseif ($lower === "repeat" || $lower === "repeat-x" || $lower === "repeat-y" || $lower === "no-repeat") { |
| 2442 |
$props["background_repeat"] = $lower; |
| 2443 |
} elseif ($this->is_color_value($lower)) { |
| 2444 |
$props["background_color"] = $lower; |
| 2445 |
} else { |
| 2446 |
$pos_size[] = $lower; |
| 2447 |
} |
| 2448 |
} |
| 2449 |
if (\count($pos_size)) { |
| 2450 |
// Split value list at "/" |
| 2451 |
$index = \array_search("/", $pos_size, \true); |
| 2452 |
if ($index !== \false) { |
| 2453 |
$pos = \array_slice($pos_size, 0, $index); |
| 2454 |
$size = \array_slice($pos_size, $index + 1); |
| 2455 |
} else { |
| 2456 |
$pos = $pos_size; |
| 2457 |
$size = []; |
| 2458 |
} |
| 2459 |
$props["background_position"] = \implode(" ", $pos); |
| 2460 |
if (\count($size)) { |
| 2461 |
$props["background_size"] = \implode(" ", $size); |
| 2462 |
} |
| 2463 |
} |
| 2464 |
return $props; |
| 2465 |
} |
| 2466 |
/** |
| 2467 |
* @link https://www.w3.org/TR/CSS21/fonts.html#propdef-font-family |
| 2468 |
*/ |
| 2469 |
protected function _compute_font_family(string $val) |
| 2470 |
{ |
| 2471 |
return \array_map(function ($name) { |
| 2472 |
return \trim($name, " '\""); |
| 2473 |
}, \preg_split("/\\s*,\\s*/", $val)); |
| 2474 |
} |
| 2475 |
/** |
| 2476 |
* @link https://www.w3.org/TR/CSS21/fonts.html#propdef-font-size |
| 2477 |
*/ |
| 2478 |
protected function _compute_font_size(string $val) |
| 2479 |
{ |
| 2480 |
$val = \strtolower($val); |
| 2481 |
$parentFontSize = isset($this->parent_style) ? $this->parent_style->__get("font_size") : self::$default_font_size; |
| 2482 |
switch ($val) { |
| 2483 |
case "xx-small": |
| 2484 |
case "x-small": |
| 2485 |
case "small": |
| 2486 |
case "medium": |
| 2487 |
case "large": |
| 2488 |
case "x-large": |
| 2489 |
case "xx-large": |
| 2490 |
$computed = self::$default_font_size * self::$font_size_keywords[$val]; |
| 2491 |
break; |
| 2492 |
case "smaller": |
| 2493 |
$computed = 8 / 9 * $parentFontSize; |
| 2494 |
break; |
| 2495 |
case "larger": |
| 2496 |
$computed = 6 / 5 * $parentFontSize; |
| 2497 |
break; |
| 2498 |
default: |
| 2499 |
$computed = $this->single_length_in_pt($val, $parentFontSize, $parentFontSize); |
| 2500 |
// Negative non-`calc` values are invalid |
| 2501 |
if ($computed === null || $computed < 0 && !\preg_match("/^-?[_a-zA-Z]/", $val)) { |
| 2502 |
return null; |
| 2503 |
} |
| 2504 |
break; |
| 2505 |
} |
| 2506 |
return $computed; |
| 2507 |
} |
| 2508 |
/** |
| 2509 |
* @link https://www.w3.org/TR/CSS21/fonts.html#propdef-font-style |
| 2510 |
*/ |
| 2511 |
protected function _compute_font_style(string $val) |
| 2512 |
{ |
| 2513 |
$val = \strtolower($val); |
| 2514 |
return $val === "normal" || $val === "italic" || $val === "oblique" ? $val : null; |
| 2515 |
} |
| 2516 |
/** |
| 2517 |
* @link https://www.w3.org/TR/css-fonts-4/#propdef-font-weight |
| 2518 |
*/ |
| 2519 |
protected function _compute_font_weight(string $val) |
| 2520 |
{ |
| 2521 |
$val = \strtolower($val); |
| 2522 |
switch ($val) { |
| 2523 |
case "normal": |
| 2524 |
return 400; |
| 2525 |
case "bold": |
| 2526 |
return 700; |
| 2527 |
case "bolder": |
| 2528 |
// https://www.w3.org/TR/css-fonts-4/#relative-weights |
| 2529 |
$w = isset($this->parent_style) ? $this->parent_style->__get("font_weight") : 400; |
| 2530 |
if ($w < 350) { |
| 2531 |
return 400; |
| 2532 |
} elseif ($w < 550) { |
| 2533 |
return 700; |
| 2534 |
} elseif ($w < 900) { |
| 2535 |
return 900; |
| 2536 |
} else { |
| 2537 |
return $w; |
| 2538 |
} |
| 2539 |
case "lighter": |
| 2540 |
// https://www.w3.org/TR/css-fonts-4/#relative-weights |
| 2541 |
$w = isset($this->parent_style) ? $this->parent_style->__get("font_weight") : 400; |
| 2542 |
if ($w < 100) { |
| 2543 |
return $w; |
| 2544 |
} elseif ($w < 550) { |
| 2545 |
return 100; |
| 2546 |
} elseif ($w < 750) { |
| 2547 |
return 400; |
| 2548 |
} else { |
| 2549 |
return 700; |
| 2550 |
} |
| 2551 |
default: |
| 2552 |
$number = self::CSS_NUMBER; |
| 2553 |
$weight = \preg_match("/^{$number}\$/", $val) ? (int) $val : null; |
| 2554 |
return $weight !== null && $weight >= 1 && $weight <= 1000 ? $weight : null; |
| 2555 |
} |
| 2556 |
} |
| 2557 |
/** |
| 2558 |
* @link https://www.w3.org/TR/css-fonts-4/#src-desc |
| 2559 |
*/ |
| 2560 |
protected function _compute_src(string $val) |
| 2561 |
{ |
| 2562 |
return $val; |
| 2563 |
} |
| 2564 |
/** |
| 2565 |
* Handle the `font` shorthand property. |
| 2566 |
* |
| 2567 |
* `[ font-style || font-variant || font-weight ] font-size [ / line-height ] font-family` |
| 2568 |
* |
| 2569 |
* @link https://www.w3.org/TR/CSS21/fonts.html#font-shorthand |
| 2570 |
*/ |
| 2571 |
protected function _set_font(string $value) : array |
| 2572 |
{ |
| 2573 |
$value = \strtolower($value); |
| 2574 |
$components = $this->parse_property_value($value); |
| 2575 |
$props = []; |
| 2576 |
$number = self::CSS_NUMBER; |
| 2577 |
$unit = "pt|px|pc|rem|em|ex|in|cm|mm|%"; |
| 2578 |
$sizePattern = "/^(xx-small|x-small|small|medium|large|x-large|xx-large|smaller|larger|{$number}(?:{$unit})|0)\$/"; |
| 2579 |
$sizeIndex = null; |
| 2580 |
// Find index of font-size to split the component list |
| 2581 |
foreach ($components as $i => $val) { |
| 2582 |
if (\preg_match($sizePattern, $val)) { |
| 2583 |
$sizeIndex = $i; |
| 2584 |
$props["font_size"] = $val; |
| 2585 |
break; |
| 2586 |
} |
| 2587 |
} |
| 2588 |
// `font-size` is mandatory |
| 2589 |
if ($sizeIndex === null) { |
| 2590 |
return []; |
| 2591 |
} |
| 2592 |
// `font-style`, `font-variant`, `font-weight` in any order |
| 2593 |
$styleVariantWeight = \array_slice($components, 0, $sizeIndex); |
| 2594 |
$stylePattern = "/^(italic|oblique)\$/"; |
| 2595 |
$variantPattern = "/^(small-caps)\$/"; |
| 2596 |
$weightPattern = "/^(bold|bolder|lighter|{$number})\$/"; |
| 2597 |
if (\count($styleVariantWeight) > 3) { |
| 2598 |
return []; |
| 2599 |
} |
| 2600 |
foreach ($styleVariantWeight as $val) { |
| 2601 |
if ($val === "normal") { |
| 2602 |
// Ignore any `normal` value, as it is valid and the initial |
| 2603 |
// value for all three properties |
| 2604 |
} elseif (!isset($props["font_style"]) && \preg_match($stylePattern, $val)) { |
| 2605 |
$props["font_style"] = $val; |
| 2606 |
} elseif (!isset($props["font_variant"]) && \preg_match($variantPattern, $val)) { |
| 2607 |
$props["font_variant"] = $val; |
| 2608 |
} elseif (!isset($props["font_weight"]) && \preg_match($weightPattern, $val)) { |
| 2609 |
$props["font_weight"] = $val; |
| 2610 |
} else { |
| 2611 |
// Duplicates and other values disallowed here |
| 2612 |
return []; |
| 2613 |
} |
| 2614 |
} |
| 2615 |
// Optional slash + `line-height` followed by mandatory `font-family` |
| 2616 |
$lineFamily = \array_slice($components, $sizeIndex + 1); |
| 2617 |
$hasLineHeight = $lineFamily !== [] && $lineFamily[0] === "/"; |
| 2618 |
$lineHeight = $hasLineHeight ? \array_slice($lineFamily, 1, 1) : []; |
| 2619 |
$fontFamily = $hasLineHeight ? \array_slice($lineFamily, 2) : $lineFamily; |
| 2620 |
$lineHeightPattern = "/^(normal|{$number}(?:{$unit})?)\$/"; |
| 2621 |
// Missing `font-family` or `line-height` after slash |
| 2622 |
if ($fontFamily === [] || $hasLineHeight && !\preg_match($lineHeightPattern, $lineHeight[0])) { |
| 2623 |
return []; |
| 2624 |
} |
| 2625 |
if ($hasLineHeight) { |
| 2626 |
$props["line_height"] = $lineHeight[0]; |
| 2627 |
} |
| 2628 |
$props["font_family"] = \implode("", $fontFamily); |
| 2629 |
return $props; |
| 2630 |
} |
| 2631 |
/** |
| 2632 |
* Compute `text-align`. |
| 2633 |
* |
| 2634 |
* If no alignment is set on the element and the direction is rtl then |
| 2635 |
* the property is set to "right", otherwise it is set to "left". |
| 2636 |
* |
| 2637 |
* @link https://www.w3.org/TR/CSS21/text.html#propdef-text-align |
| 2638 |
*/ |
| 2639 |
protected function _compute_text_align(string $val) |
| 2640 |
{ |
| 2641 |
$alignment = \strtolower($val); |
| 2642 |
if ($alignment === "") { |
| 2643 |
$alignment = $this->__get("direction") === "rtl" ? "right" : "left"; |
| 2644 |
} |
| 2645 |
if (!\in_array($alignment, self::TEXT_ALIGN_KEYWORDS, \true)) { |
| 2646 |
return null; |
| 2647 |
} |
| 2648 |
return $alignment; |
| 2649 |
} |
| 2650 |
/** |
| 2651 |
* @link https://www.w3.org/TR/css-text-4/#word-spacing-property |
| 2652 |
*/ |
| 2653 |
protected function _compute_word_spacing(string $val) |
| 2654 |
{ |
| 2655 |
$val = \strtolower($val); |
| 2656 |
if ($val === "normal") { |
| 2657 |
return 0.0; |
| 2658 |
} |
| 2659 |
return $this->compute_length_percentage($val); |
| 2660 |
} |
| 2661 |
/** |
| 2662 |
* @link https://www.w3.org/TR/css-text-4/#letter-spacing-property |
| 2663 |
*/ |
| 2664 |
protected function _compute_letter_spacing(string $val) |
| 2665 |
{ |
| 2666 |
$val = \strtolower($val); |
| 2667 |
if ($val === "normal") { |
| 2668 |
return 0.0; |
| 2669 |
} |
| 2670 |
return $this->compute_length_percentage($val); |
| 2671 |
} |
| 2672 |
/** |
| 2673 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-line-height |
| 2674 |
*/ |
| 2675 |
protected function _compute_line_height(string $val) |
| 2676 |
{ |
| 2677 |
$val = \strtolower($val); |
| 2678 |
if ($val === "normal") { |
| 2679 |
return $val; |
| 2680 |
} |
| 2681 |
// Compute number values to string and lengths to float (in pt) |
| 2682 |
if (\is_numeric($val)) { |
| 2683 |
return (string) $val; |
| 2684 |
} |
| 2685 |
$font_size = $this->__get("font_size"); |
| 2686 |
$computed = $this->single_length_in_pt($val, $font_size); |
| 2687 |
// Negative non-`calc` values are invalid |
| 2688 |
if ($computed === null || $computed < 0 && !\preg_match("/^-?[_a-zA-Z]/", $val)) { |
| 2689 |
return null; |
| 2690 |
} |
| 2691 |
return $computed; |
| 2692 |
} |
| 2693 |
/** |
| 2694 |
* @link https://www.w3.org/TR/css-text-3/#text-indent-property |
| 2695 |
*/ |
| 2696 |
protected function _compute_text_indent(string $val) |
| 2697 |
{ |
| 2698 |
return $this->compute_length_percentage($val); |
| 2699 |
} |
| 2700 |
/** |
| 2701 |
* @link https://www.w3.org/TR/CSS21/page.html#propdef-page-break-before |
| 2702 |
*/ |
| 2703 |
protected function _compute_page_break_before(string $val) |
| 2704 |
{ |
| 2705 |
$break = \strtolower($val); |
| 2706 |
if ($break === "left" || $break === "right") { |
| 2707 |
$break = "always"; |
| 2708 |
} |
| 2709 |
return $break; |
| 2710 |
} |
| 2711 |
/** |
| 2712 |
* @link https://www.w3.org/TR/CSS21/page.html#propdef-page-break-after |
| 2713 |
*/ |
| 2714 |
protected function _compute_page_break_after(string $val) |
| 2715 |
{ |
| 2716 |
$break = \strtolower($val); |
| 2717 |
if ($break === "left" || $break === "right") { |
| 2718 |
$break = "always"; |
| 2719 |
} |
| 2720 |
return $break; |
| 2721 |
} |
| 2722 |
/** |
| 2723 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-width |
| 2724 |
*/ |
| 2725 |
protected function _compute_width(string $val) |
| 2726 |
{ |
| 2727 |
$val = \strtolower($val); |
| 2728 |
if ($val === "auto") { |
| 2729 |
return $val; |
| 2730 |
} |
| 2731 |
return $this->compute_length_percentage_positive($val); |
| 2732 |
} |
| 2733 |
/** |
| 2734 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-height |
| 2735 |
*/ |
| 2736 |
protected function _compute_height(string $val) |
| 2737 |
{ |
| 2738 |
$val = \strtolower($val); |
| 2739 |
if ($val === "auto") { |
| 2740 |
return $val; |
| 2741 |
} |
| 2742 |
return $this->compute_length_percentage_positive($val); |
| 2743 |
} |
| 2744 |
/** |
| 2745 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-min-width |
| 2746 |
*/ |
| 2747 |
protected function _compute_min_width(string $val) |
| 2748 |
{ |
| 2749 |
$val = \strtolower($val); |
| 2750 |
// Legacy support for `none`, not covered by spec |
| 2751 |
if ($val === "auto" || $val === "none") { |
| 2752 |
return "auto"; |
| 2753 |
} |
| 2754 |
return $this->compute_length_percentage_positive($val); |
| 2755 |
} |
| 2756 |
/** |
| 2757 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-min-height |
| 2758 |
*/ |
| 2759 |
protected function _compute_min_height(string $val) |
| 2760 |
{ |
| 2761 |
$val = \strtolower($val); |
| 2762 |
// Legacy support for `none`, not covered by spec |
| 2763 |
if ($val === "auto" || $val === "none") { |
| 2764 |
return "auto"; |
| 2765 |
} |
| 2766 |
return $this->compute_length_percentage_positive($val); |
| 2767 |
} |
| 2768 |
/** |
| 2769 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-max-width |
| 2770 |
*/ |
| 2771 |
protected function _compute_max_width(string $val) |
| 2772 |
{ |
| 2773 |
$val = \strtolower($val); |
| 2774 |
// Legacy support for `auto`, not covered by spec |
| 2775 |
if ($val === "none" || $val === "auto") { |
| 2776 |
return "none"; |
| 2777 |
} |
| 2778 |
return $this->compute_length_percentage_positive($val); |
| 2779 |
} |
| 2780 |
/** |
| 2781 |
* @link https://www.w3.org/TR/CSS21/visudet.html#propdef-max-height |
| 2782 |
*/ |
| 2783 |
protected function _compute_max_height(string $val) |
| 2784 |
{ |
| 2785 |
$val = \strtolower($val); |
| 2786 |
// Legacy support for `auto`, not covered by spec |
| 2787 |
if ($val === "none" || $val === "auto") { |
| 2788 |
return "none"; |
| 2789 |
} |
| 2790 |
return $this->compute_length_percentage_positive($val); |
| 2791 |
} |
| 2792 |
/** |
| 2793 |
* @link https://www.w3.org/TR/css-position-3/#inset-properties |
| 2794 |
* @link https://www.w3.org/TR/css-position-3/#propdef-inset |
| 2795 |
*/ |
| 2796 |
protected function _set_inset(string $val) : array |
| 2797 |
{ |
| 2798 |
return $this->set_quad_shorthand("inset", $val); |
| 2799 |
} |
| 2800 |
/** |
| 2801 |
* @param string $val |
| 2802 |
* @return float|string|null |
| 2803 |
*/ |
| 2804 |
protected function compute_box_inset(string $val) |
| 2805 |
{ |
| 2806 |
$val = \strtolower($val); |
| 2807 |
if ($val === "auto") { |
| 2808 |
return $val; |
| 2809 |
} |
| 2810 |
return $this->compute_length_percentage($val); |
| 2811 |
} |
| 2812 |
protected function _compute_top(string $val) |
| 2813 |
{ |
| 2814 |
return $this->compute_box_inset($val); |
| 2815 |
} |
| 2816 |
protected function _compute_right(string $val) |
| 2817 |
{ |
| 2818 |
return $this->compute_box_inset($val); |
| 2819 |
} |
| 2820 |
protected function _compute_bottom(string $val) |
| 2821 |
{ |
| 2822 |
return $this->compute_box_inset($val); |
| 2823 |
} |
| 2824 |
protected function _compute_left(string $val) |
| 2825 |
{ |
| 2826 |
return $this->compute_box_inset($val); |
| 2827 |
} |
| 2828 |
/** |
| 2829 |
* @link https://www.w3.org/TR/CSS21/box.html#margin-properties |
| 2830 |
* @link https://www.w3.org/TR/CSS21/box.html#propdef-margin |
| 2831 |
*/ |
| 2832 |
protected function _set_margin(string $val) : array |
| 2833 |
{ |
| 2834 |
return $this->set_quad_shorthand("margin", $val); |
| 2835 |
} |
| 2836 |
/** |
| 2837 |
* @param string $val |
| 2838 |
* @return float|string|null |
| 2839 |
*/ |
| 2840 |
protected function compute_margin(string $val) |
| 2841 |
{ |
| 2842 |
$val = \strtolower($val); |
| 2843 |
// Legacy support for `none` keyword, not covered by spec |
| 2844 |
if ($val === "none") { |
| 2845 |
return 0.0; |
| 2846 |
} |
| 2847 |
if ($val === "auto") { |
| 2848 |
return $val; |
| 2849 |
} |
| 2850 |
return $this->compute_length_percentage($val); |
| 2851 |
} |
| 2852 |
protected function _compute_margin_top(string $val) |
| 2853 |
{ |
| 2854 |
return $this->compute_margin($val); |
| 2855 |
} |
| 2856 |
protected function _compute_margin_right(string $val) |
| 2857 |
{ |
| 2858 |
return $this->compute_margin($val); |
| 2859 |
} |
| 2860 |
protected function _compute_margin_bottom(string $val) |
| 2861 |
{ |
| 2862 |
return $this->compute_margin($val); |
| 2863 |
} |
| 2864 |
protected function _compute_margin_left(string $val) |
| 2865 |
{ |
| 2866 |
return $this->compute_margin($val); |
| 2867 |
} |
| 2868 |
/** |
| 2869 |
* @link https://www.w3.org/TR/CSS21/box.html#padding-properties |
| 2870 |
* @link https://www.w3.org/TR/CSS21/box.html#propdef-padding |
| 2871 |
*/ |
| 2872 |
protected function _set_padding(string $val) : array |
| 2873 |
{ |
| 2874 |
return $this->set_quad_shorthand("padding", $val); |
| 2875 |
} |
| 2876 |
/** |
| 2877 |
* @param string $val |
| 2878 |
* @return float|string|null |
| 2879 |
*/ |
| 2880 |
protected function compute_padding(string $val) |
| 2881 |
{ |
| 2882 |
$val = \strtolower($val); |
| 2883 |
// Legacy support for `none` keyword, not covered by spec |
| 2884 |
if ($val === "none") { |
| 2885 |
return 0.0; |
| 2886 |
} |
| 2887 |
return $this->compute_length_percentage_positive($val); |
| 2888 |
} |
| 2889 |
protected function _compute_padding_top(string $val) |
| 2890 |
{ |
| 2891 |
return $this->compute_padding($val); |
| 2892 |
} |
| 2893 |
protected function _compute_padding_right(string $val) |
| 2894 |
{ |
| 2895 |
return $this->compute_padding($val); |
| 2896 |
} |
| 2897 |
protected function _compute_padding_bottom(string $val) |
| 2898 |
{ |
| 2899 |
return $this->compute_padding($val); |
| 2900 |
} |
| 2901 |
protected function _compute_padding_left(string $val) |
| 2902 |
{ |
| 2903 |
return $this->compute_padding($val); |
| 2904 |
} |
| 2905 |
/** |
| 2906 |
* @param string $value `width || style || color` |
| 2907 |
* @param string[] $styles The list of border styles to accept. |
| 2908 |
* |
| 2909 |
* @return string[]|null Array of `[width, style, color]`, or `null` if the declaration is invalid. |
| 2910 |
*/ |
| 2911 |
protected function parse_border_side(string $value, array $styles = self::BORDER_STYLES) : ?array |
| 2912 |
{ |
| 2913 |
$value = \strtolower($value); |
| 2914 |
$components = $this->parse_property_value($value); |
| 2915 |
$width = null; |
| 2916 |
$style = null; |
| 2917 |
$color = null; |
| 2918 |
foreach ($components as $val) { |
| 2919 |
if ($style === null && \in_array($val, $styles, \true)) { |
| 2920 |
$style = $val; |
| 2921 |
} elseif ($color === null && $this->is_color_value($val)) { |
| 2922 |
$color = $val; |
| 2923 |
} elseif ($width === null) { |
| 2924 |
// Assume width |
| 2925 |
$width = $val; |
| 2926 |
} else { |
| 2927 |
// Duplicates are not allowed |
| 2928 |
return null; |
| 2929 |
} |
| 2930 |
} |
| 2931 |
return [$width, $style, $color]; |
| 2932 |
} |
| 2933 |
/** |
| 2934 |
* @link https://www.w3.org/TR/CSS21/box.html#border-properties |
| 2935 |
* @link https://www.w3.org/TR/CSS21/box.html#propdef-border |
| 2936 |
*/ |
| 2937 |
protected function _set_border(string $value) : array |
| 2938 |
{ |
| 2939 |
$values = $this->parse_border_side($value); |
| 2940 |
if ($values === null) { |
| 2941 |
return []; |
| 2942 |
} |
| 2943 |
return \array_merge(\array_combine(self::$_props_shorthand["border_top"], $values), \array_combine(self::$_props_shorthand["border_right"], $values), \array_combine(self::$_props_shorthand["border_bottom"], $values), \array_combine(self::$_props_shorthand["border_left"], $values)); |
| 2944 |
} |
| 2945 |
/** |
| 2946 |
* @param string $prop |
| 2947 |
* @param string $value |
| 2948 |
* @return array |
| 2949 |
*/ |
| 2950 |
protected function set_border_side(string $prop, string $value) : array |
| 2951 |
{ |
| 2952 |
$values = $this->parse_border_side($value); |
| 2953 |
if ($values === null) { |
| 2954 |
return []; |
| 2955 |
} |
| 2956 |
return \array_combine(self::$_props_shorthand[$prop], $values); |
| 2957 |
} |
| 2958 |
protected function _set_border_top(string $val) : array |
| 2959 |
{ |
| 2960 |
return $this->set_border_side("border_top", $val); |
| 2961 |
} |
| 2962 |
protected function _set_border_right(string $val) : array |
| 2963 |
{ |
| 2964 |
return $this->set_border_side("border_right", $val); |
| 2965 |
} |
| 2966 |
protected function _set_border_bottom(string $val) : array |
| 2967 |
{ |
| 2968 |
return $this->set_border_side("border_bottom", $val); |
| 2969 |
} |
| 2970 |
protected function _set_border_left(string $val) : array |
| 2971 |
{ |
| 2972 |
return $this->set_border_side("border_left", $val); |
| 2973 |
} |
| 2974 |
/** |
| 2975 |
* @link https://www.w3.org/TR/CSS21/box.html#propdef-border-color |
| 2976 |
*/ |
| 2977 |
protected function _set_border_color(string $val) : array |
| 2978 |
{ |
| 2979 |
return $this->set_quad_shorthand("border_color", $val); |
| 2980 |
} |
| 2981 |
protected function _compute_border_top_color(string $val) |
| 2982 |
{ |
| 2983 |
return $this->compute_color_value($val); |
| 2984 |
} |
| 2985 |
protected function _compute_border_right_color(string $val) |
| 2986 |
{ |
| 2987 |
return $this->compute_color_value($val); |
| 2988 |
} |
| 2989 |
protected function _compute_border_bottom_color(string $val) |
| 2990 |
{ |
| 2991 |
return $this->compute_color_value($val); |
| 2992 |
} |
| 2993 |
protected function _compute_border_left_color(string $val) |
| 2994 |
{ |
| 2995 |
return $this->compute_color_value($val); |
| 2996 |
} |
| 2997 |
/** |
| 2998 |
* @link https://www.w3.org/TR/CSS21/box.html#propdef-border-style |
| 2999 |
*/ |
| 3000 |
protected function _set_border_style(string $val) : array |
| 3001 |
{ |
| 3002 |
return $this->set_quad_shorthand("border_style", $val); |
| 3003 |
} |
| 3004 |
protected function _compute_border_top_style(string $val) |
| 3005 |
{ |
| 3006 |
return $this->compute_border_style($val); |
| 3007 |
} |
| 3008 |
protected function _compute_border_right_style(string $val) |
| 3009 |
{ |
| 3010 |
return $this->compute_border_style($val); |
| 3011 |
} |
| 3012 |
protected function _compute_border_bottom_style(string $val) |
| 3013 |
{ |
| 3014 |
return $this->compute_border_style($val); |
| 3015 |
} |
| 3016 |
protected function _compute_border_left_style(string $val) |
| 3017 |
{ |
| 3018 |
return $this->compute_border_style($val); |
| 3019 |
} |
| 3020 |
/** |
| 3021 |
* @link https://www.w3.org/TR/CSS21/box.html#propdef-border-width |
| 3022 |
*/ |
| 3023 |
protected function _set_border_width(string $val) : array |
| 3024 |
{ |
| 3025 |
return $this->set_quad_shorthand("border_width", $val); |
| 3026 |
} |
| 3027 |
protected function _compute_border_top_width(string $val) |
| 3028 |
{ |
| 3029 |
return $this->compute_line_width($val, "border_top_style"); |
| 3030 |
} |
| 3031 |
protected function _compute_border_right_width(string $val) |
| 3032 |
{ |
| 3033 |
return $this->compute_line_width($val, "border_right_style"); |
| 3034 |
} |
| 3035 |
protected function _compute_border_bottom_width(string $val) |
| 3036 |
{ |
| 3037 |
return $this->compute_line_width($val, "border_bottom_style"); |
| 3038 |
} |
| 3039 |
protected function _compute_border_left_width(string $val) |
| 3040 |
{ |
| 3041 |
return $this->compute_line_width($val, "border_left_style"); |
| 3042 |
} |
| 3043 |
/** |
| 3044 |
* @link https://www.w3.org/TR/css-backgrounds-3/#corners |
| 3045 |
* @link https://www.w3.org/TR/css-backgrounds-3/#propdef-border-radius |
| 3046 |
*/ |
| 3047 |
protected function _set_border_radius(string $val) : array |
| 3048 |
{ |
| 3049 |
return $this->set_quad_shorthand("border_radius", $val); |
| 3050 |
} |
| 3051 |
protected function _compute_border_top_left_radius(string $val) |
| 3052 |
{ |
| 3053 |
return $this->compute_length_percentage_positive($val); |
| 3054 |
} |
| 3055 |
protected function _compute_border_top_right_radius(string $val) |
| 3056 |
{ |
| 3057 |
return $this->compute_length_percentage_positive($val); |
| 3058 |
} |
| 3059 |
protected function _compute_border_bottom_right_radius(string $val) |
| 3060 |
{ |
| 3061 |
return $this->compute_length_percentage_positive($val); |
| 3062 |
} |
| 3063 |
protected function _compute_border_bottom_left_radius(string $val) |
| 3064 |
{ |
| 3065 |
return $this->compute_length_percentage_positive($val); |
| 3066 |
} |
| 3067 |
/** |
| 3068 |
* @link https://www.w3.org/TR/css-ui-4/#outline-props |
| 3069 |
* @link https://www.w3.org/TR/css-ui-4/#propdef-outline |
| 3070 |
*/ |
| 3071 |
protected function _set_outline(string $value) : array |
| 3072 |
{ |
| 3073 |
$values = $this->parse_border_side($value, self::OUTLINE_STYLES); |
| 3074 |
if ($values === null) { |
| 3075 |
return []; |
| 3076 |
} |
| 3077 |
return \array_combine(self::$_props_shorthand["outline"], $values); |
| 3078 |
} |
| 3079 |
protected function _compute_outline_color(string $val) |
| 3080 |
{ |
| 3081 |
return $this->compute_color_value($val); |
| 3082 |
} |
| 3083 |
protected function _compute_outline_style(string $val) |
| 3084 |
{ |
| 3085 |
$val = \strtolower($val); |
| 3086 |
return \in_array($val, self::OUTLINE_STYLES, \true) ? $val : null; |
| 3087 |
} |
| 3088 |
protected function _compute_outline_width(string $val) |
| 3089 |
{ |
| 3090 |
return $this->compute_line_width($val, "outline_style"); |
| 3091 |
} |
| 3092 |
/** |
| 3093 |
* @link https://www.w3.org/TR/css-ui-4/#propdef-outline-offset |
| 3094 |
*/ |
| 3095 |
protected function _compute_outline_offset(string $val) |
| 3096 |
{ |
| 3097 |
return $this->compute_length($val); |
| 3098 |
} |
| 3099 |
/** |
| 3100 |
* Compute `border-spacing` to two lengths of the form |
| 3101 |
* `[horizontal, vertical]`. |
| 3102 |
* |
| 3103 |
* @link https://www.w3.org/TR/CSS21/tables.html#propdef-border-spacing |
| 3104 |
*/ |
| 3105 |
protected function _compute_border_spacing(string $val) |
| 3106 |
{ |
| 3107 |
$val = \strtolower($val); |
| 3108 |
$parts = $this->parse_property_value($val); |
| 3109 |
$count = \count($parts); |
| 3110 |
if ($count === 0 || $count > 2) { |
| 3111 |
return null; |
| 3112 |
} |
| 3113 |
$h = $this->compute_length_positive($parts[0]); |
| 3114 |
$v = isset($parts[1]) ? $this->compute_length_positive($parts[1]) : $h; |
| 3115 |
if ($h === null || $v === null) { |
| 3116 |
return null; |
| 3117 |
} |
| 3118 |
return [$h, $v]; |
| 3119 |
} |
| 3120 |
/** |
| 3121 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-list-style-image |
| 3122 |
*/ |
| 3123 |
protected function _compute_list_style_image(string $val) |
| 3124 |
{ |
| 3125 |
$parsed_val = $this->_stylesheet->resolve_url($val); |
| 3126 |
if ($parsed_val === "none") { |
| 3127 |
return "none"; |
| 3128 |
} else { |
| 3129 |
return "url(\"" . \str_replace("\"", "\\\"", $parsed_val) . "\")"; |
| 3130 |
} |
| 3131 |
} |
| 3132 |
/** |
| 3133 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-list-style-type |
| 3134 |
*/ |
| 3135 |
protected function _compute_list_style_position(string $val) |
| 3136 |
{ |
| 3137 |
$val = \strtolower($val); |
| 3138 |
return $val === "inside" || $val === "outside" ? $val : null; |
| 3139 |
} |
| 3140 |
/** |
| 3141 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-list-style-type |
| 3142 |
*/ |
| 3143 |
protected function _compute_list_style_type(string $val) |
| 3144 |
{ |
| 3145 |
$val = \strtolower($val); |
| 3146 |
if ($val === "none") { |
| 3147 |
return $val; |
| 3148 |
} |
| 3149 |
$ident = self::CSS_IDENTIFIER; |
| 3150 |
return $val !== "default" && \preg_match("/^{$ident}\$/", $val) ? $val : null; |
| 3151 |
} |
| 3152 |
/** |
| 3153 |
* Handle the `list-style` shorthand property. |
| 3154 |
* |
| 3155 |
* `[ list-style-position || list-style-image || list-style-type ]` |
| 3156 |
* |
| 3157 |
* @link https://www.w3.org/TR/css-lists-3/#list-style-property |
| 3158 |
*/ |
| 3159 |
protected function _set_list_style(string $value) : array |
| 3160 |
{ |
| 3161 |
$components = $this->parse_property_value($value); |
| 3162 |
$none = 0; |
| 3163 |
$position = null; |
| 3164 |
$image = null; |
| 3165 |
$type = null; |
| 3166 |
foreach ($components as $val) { |
| 3167 |
$lower = \strtolower($val); |
| 3168 |
// `none` can occur max 2 times (for image and type each) |
| 3169 |
if ($none < 2 && $lower === "none") { |
| 3170 |
$none++; |
| 3171 |
} elseif ($position === null && ($lower === "inside" || $lower === "outside")) { |
| 3172 |
$position = $lower; |
| 3173 |
} elseif ($image === null && \strncmp($lower, "url(", 4) === 0) { |
| 3174 |
$image = $val; |
| 3175 |
} elseif ($type === null) { |
| 3176 |
$type = $val; |
| 3177 |
} else { |
| 3178 |
// Duplicates are not allowed |
| 3179 |
return []; |
| 3180 |
} |
| 3181 |
} |
| 3182 |
// From the spec: |
| 3183 |
// Using a value of `none` in the shorthand is potentially ambiguous, as |
| 3184 |
// `none` is a valid value for both `list-style-image` and `list-style-type`. |
| 3185 |
// To resolve this ambiguity, a value of `none` in the shorthand must be |
| 3186 |
// applied to whichever of the two properties aren’t otherwise set by |
| 3187 |
// the shorthand. |
| 3188 |
if ($none === 2) { |
| 3189 |
if ($image !== null || $type !== null) { |
| 3190 |
return []; |
| 3191 |
} |
| 3192 |
$image = "none"; |
| 3193 |
$type = "none"; |
| 3194 |
} elseif ($none === 1) { |
| 3195 |
if ($image !== null && $type !== null) { |
| 3196 |
return []; |
| 3197 |
} |
| 3198 |
$image = $image ?? "none"; |
| 3199 |
$type = $type ?? "none"; |
| 3200 |
} |
| 3201 |
return ["list_style_position" => $position, "list_style_image" => $image, "list_style_type" => $type]; |
| 3202 |
} |
| 3203 |
/** |
| 3204 |
* @param string $value |
| 3205 |
* @param int $default |
| 3206 |
* @param bool $sumDuplicates |
| 3207 |
* |
| 3208 |
* @return array|string|null |
| 3209 |
*/ |
| 3210 |
protected function compute_counter_prop(string $value, int $default, bool $sumDuplicates = \false) |
| 3211 |
{ |
| 3212 |
$lower = \strtolower($value); |
| 3213 |
if ($lower === "none") { |
| 3214 |
return $lower; |
| 3215 |
} |
| 3216 |
$ident = self::CSS_IDENTIFIER; |
| 3217 |
$integer = self::CSS_INTEGER; |
| 3218 |
$counterDef = "({$ident})(?:\\s+({$integer}))?"; |
| 3219 |
$validationPattern = "/^{$counterDef}(\\s+{$counterDef})*\$/"; |
| 3220 |
if (!\preg_match($validationPattern, $value)) { |
| 3221 |
return null; |
| 3222 |
} |
| 3223 |
\preg_match_all("/{$counterDef}/", $value, $matches, \PREG_SET_ORDER); |
| 3224 |
$counters = []; |
| 3225 |
foreach ($matches as $match) { |
| 3226 |
$name = $match[1]; |
| 3227 |
if (!$this->isValidCounterName($name)) { |
| 3228 |
return null; |
| 3229 |
} |
| 3230 |
$value = isset($match[2]) ? (int) $match[2] : $default; |
| 3231 |
$counters[$name] = $sumDuplicates ? ($counters[$name] ?? 0) + $value : $value; |
| 3232 |
} |
| 3233 |
return $counters; |
| 3234 |
} |
| 3235 |
/** |
| 3236 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-counter-increment |
| 3237 |
*/ |
| 3238 |
protected function _compute_counter_increment(string $val) |
| 3239 |
{ |
| 3240 |
return $this->compute_counter_prop($val, 1, \true); |
| 3241 |
} |
| 3242 |
/** |
| 3243 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-counter-reset |
| 3244 |
*/ |
| 3245 |
protected function _compute_counter_reset(string $val) |
| 3246 |
{ |
| 3247 |
return $this->compute_counter_prop($val, 0); |
| 3248 |
} |
| 3249 |
/** |
| 3250 |
* @link https://www.w3.org/TR/css-content-3/#quotes |
| 3251 |
*/ |
| 3252 |
protected function _compute_quotes(string $val) |
| 3253 |
{ |
| 3254 |
$lower = \strtolower($val); |
| 3255 |
// `auto` is resolved in the getter, so it can inherit as is |
| 3256 |
if ($lower === "none" || $lower === "auto") { |
| 3257 |
return $lower; |
| 3258 |
} |
| 3259 |
$components = $this->parse_property_value($val); |
| 3260 |
$quotes = []; |
| 3261 |
foreach ($components as $value) { |
| 3262 |
if (\strncmp($value, '"', 1) !== 0 && \strncmp($value, "'", 1) !== 0) { |
| 3263 |
return null; |
| 3264 |
} |
| 3265 |
$quotes[] = $this->_stylesheet->parse_string($value); |
| 3266 |
} |
| 3267 |
if ($quotes === [] || \count($quotes) % 2 !== 0) { |
| 3268 |
return null; |
| 3269 |
} |
| 3270 |
return \array_chunk($quotes, 2); |
| 3271 |
} |
| 3272 |
/** |
| 3273 |
* @link https://www.w3.org/TR/CSS21/generate.html#propdef-content |
| 3274 |
* @link https://www.w3.org/TR/css-content-3/#propdef-content |
| 3275 |
*/ |
| 3276 |
protected function _compute_content(string $val) |
| 3277 |
{ |
| 3278 |
$lower = \strtolower($val); |
| 3279 |
if ($lower === "normal" || $lower === "none") { |
| 3280 |
return $lower; |
| 3281 |
} |
| 3282 |
$components = $this->parse_property_value($val); |
| 3283 |
$parts = []; |
| 3284 |
if ($components === []) { |
| 3285 |
return null; |
| 3286 |
} |
| 3287 |
foreach ($components as $value) { |
| 3288 |
// String |
| 3289 |
if (\strncmp($value, '"', 1) === 0 || \strncmp($value, "'", 1) === 0) { |
| 3290 |
$parts[] = new StringPart($this->_stylesheet->parse_string($value)); |
| 3291 |
continue; |
| 3292 |
} |
| 3293 |
$lower = \strtolower($value); |
| 3294 |
// Keywords |
| 3295 |
if ($lower === "open-quote") { |
| 3296 |
$parts[] = new OpenQuote(); |
| 3297 |
continue; |
| 3298 |
} elseif ($lower === "close-quote") { |
| 3299 |
$parts[] = new CloseQuote(); |
| 3300 |
continue; |
| 3301 |
} elseif ($lower === "no-open-quote") { |
| 3302 |
$parts[] = new NoOpenQuote(); |
| 3303 |
continue; |
| 3304 |
} elseif ($lower === "no-close-quote") { |
| 3305 |
$parts[] = new NoCloseQuote(); |
| 3306 |
continue; |
| 3307 |
} |
| 3308 |
// Functional components |
| 3309 |
$pos = \strpos($lower, "("); |
| 3310 |
if ($pos === \false) { |
| 3311 |
return null; |
| 3312 |
} |
| 3313 |
// `parse_property_value` ensures that the value is of the form |
| 3314 |
// `function(arguments)` at this point |
| 3315 |
$function = \substr($lower, 0, $pos); |
| 3316 |
$arguments = \trim(\substr($value, $pos + 1, -1)); |
| 3317 |
// attr() |
| 3318 |
if ($function === "attr") { |
| 3319 |
$attr = \strtolower($arguments); |
| 3320 |
if ($attr === "") { |
| 3321 |
return null; |
| 3322 |
} |
| 3323 |
$parts[] = new Attr($attr); |
| 3324 |
} elseif ($function === "counter") { |
| 3325 |
$ident = self::CSS_IDENTIFIER; |
| 3326 |
if (!\preg_match("/^({$ident})(?:\\s*,\\s*({$ident}))?\$/", $arguments, $matches)) { |
| 3327 |
return null; |
| 3328 |
} |
| 3329 |
$name = $matches[1]; |
| 3330 |
$type = isset($matches[2]) ? \strtolower($matches[2]) : "decimal"; |
| 3331 |
if (!$this->isValidCounterName($name) || !$this->isValidCounterStyleName($type)) { |
| 3332 |
return null; |
| 3333 |
} |
| 3334 |
$parts[] = new Counter($name, $type); |
| 3335 |
} elseif ($function === "counters") { |
| 3336 |
$ident = self::CSS_IDENTIFIER; |
| 3337 |
$string = self::CSS_STRING; |
| 3338 |
if (!\preg_match("/^({$ident})\\s*,\\s*({$string})(?:\\s*,\\s*({$ident}))?\$/", $arguments, $matches)) { |
| 3339 |
return null; |
| 3340 |
} |
| 3341 |
$name = $matches[1]; |
| 3342 |
$string = $this->_stylesheet->parse_string($matches[2]); |
| 3343 |
$type = isset($matches[3]) ? \strtolower($matches[3]) : "decimal"; |
| 3344 |
if (!$this->isValidCounterName($name) || !$this->isValidCounterStyleName($type)) { |
| 3345 |
return null; |
| 3346 |
} |
| 3347 |
$parts[] = new Counters($name, $string, $type); |
| 3348 |
} elseif ($function === "url") { |
| 3349 |
$url = $this->_stylesheet->parse_string($arguments); |
| 3350 |
$parts[] = new Url($url); |
| 3351 |
} else { |
| 3352 |
return null; |
| 3353 |
} |
| 3354 |
} |
| 3355 |
return $parts; |
| 3356 |
} |
| 3357 |
/** |
| 3358 |
* @link https://www.w3.org/TR/css-page-3/#page-size-prop |
| 3359 |
*/ |
| 3360 |
protected function _compute_size(string $val) |
| 3361 |
{ |
| 3362 |
$val = \strtolower($val); |
| 3363 |
if ($val === "auto") { |
| 3364 |
return $val; |
| 3365 |
} |
| 3366 |
$parts = $this->parse_property_value($val); |
| 3367 |
$count = \count($parts); |
| 3368 |
if ($count === 0 || $count > 3) { |
| 3369 |
return null; |
| 3370 |
} |
| 3371 |
$size = null; |
| 3372 |
$orientation = null; |
| 3373 |
$lengths = []; |
| 3374 |
foreach ($parts as $part) { |
| 3375 |
if ($size === null && isset(CPDF::$PAPER_SIZES[$part])) { |
| 3376 |
$size = $part; |
| 3377 |
} elseif ($orientation === null && ($part === "portrait" || $part === "landscape")) { |
| 3378 |
$orientation = $part; |
| 3379 |
} else { |
| 3380 |
$lengths[] = $part; |
| 3381 |
} |
| 3382 |
} |
| 3383 |
if ($size !== null && $lengths !== []) { |
| 3384 |
return null; |
| 3385 |
} |
| 3386 |
if ($size !== null) { |
| 3387 |
// Standard paper size |
| 3388 |
[$l1, $l2] = \array_slice(CPDF::$PAPER_SIZES[$size], 2, 2); |
| 3389 |
} elseif ($lengths === []) { |
| 3390 |
// Orientation only, use default paper size |
| 3391 |
$dims = $this->_stylesheet->get_dompdf()->getPaperSize(); |
| 3392 |
[$l1, $l2] = \array_slice($dims, 2, 2); |
| 3393 |
} else { |
| 3394 |
// Custom paper size |
| 3395 |
$l1 = $this->compute_length_positive($lengths[0]); |
| 3396 |
$l2 = isset($lengths[1]) ? $this->compute_length_positive($lengths[1]) : $l1; |
| 3397 |
if ($l1 === null || $l2 === null) { |
| 3398 |
return null; |
| 3399 |
} |
| 3400 |
} |
| 3401 |
if ($orientation === "portrait" && $l1 > $l2 || $orientation === "landscape" && $l2 > $l1) { |
| 3402 |
return [$l2, $l1]; |
| 3403 |
} |
| 3404 |
return [$l1, $l2]; |
| 3405 |
} |
| 3406 |
/** |
| 3407 |
* @link https://www.w3.org/TR/css-transforms-1/#transform-property |
| 3408 |
*/ |
| 3409 |
protected function _compute_transform(string $val) |
| 3410 |
{ |
| 3411 |
$val = \strtolower($val); |
| 3412 |
if ($val === "none") { |
| 3413 |
return []; |
| 3414 |
} |
| 3415 |
$parts = $this->parse_property_value($val); |
| 3416 |
$transforms = []; |
| 3417 |
if ($parts === []) { |
| 3418 |
return null; |
| 3419 |
} |
| 3420 |
foreach ($parts as $part) { |
| 3421 |
if (!\preg_match("/^([a-z]+)\\((.+)\\)\$/s", $part, $matches)) { |
| 3422 |
return null; |
| 3423 |
} |
| 3424 |
$name = $matches[1]; |
| 3425 |
$arguments = \trim($matches[2]); |
| 3426 |
$values = $this->parse_property_value($arguments); |
| 3427 |
$values = \array_values(\array_filter($values, function ($v) { |
| 3428 |
return $v !== ","; |
| 3429 |
})); |
| 3430 |
$count = \count($values); |
| 3431 |
if ($count === 0) { |
| 3432 |
return null; |
| 3433 |
} |
| 3434 |
switch ($name) { |
| 3435 |
// case "matrix": |
| 3436 |
// if ($count !== 6) { |
| 3437 |
// return null; |
| 3438 |
// } |
| 3439 |
// $values = array_map([$this, "compute_number"], $values); |
| 3440 |
// break; |
| 3441 |
// <length-percentage> units |
| 3442 |
case "translate": |
| 3443 |
if ($count > 2) { |
| 3444 |
return null; |
| 3445 |
} |
| 3446 |
$values = [$this->compute_length_percentage($values[0]), isset($values[1]) ? $this->compute_length_percentage($values[1]) : 0.0]; |
| 3447 |
break; |
| 3448 |
case "translatex": |
| 3449 |
if ($count > 1) { |
| 3450 |
return null; |
| 3451 |
} |
| 3452 |
$name = "translate"; |
| 3453 |
$values = [$this->compute_length_percentage($values[0]), 0.0]; |
| 3454 |
break; |
| 3455 |
case "translatey": |
| 3456 |
if ($count > 1) { |
| 3457 |
return null; |
| 3458 |
} |
| 3459 |
$name = "translate"; |
| 3460 |
$values = [0.0, $this->compute_length_percentage($values[0])]; |
| 3461 |
break; |
| 3462 |
// <number> units |
| 3463 |
case "scale": |
| 3464 |
if ($count > 2) { |
| 3465 |
return null; |
| 3466 |
} |
| 3467 |
$v0 = $this->compute_number($values[0]); |
| 3468 |
$v1 = isset($values[1]) ? $this->compute_number($values[1]) : $v0; |
| 3469 |
$values = [$v0, $v1]; |
| 3470 |
break; |
| 3471 |
case "scalex": |
| 3472 |
if ($count > 1) { |
| 3473 |
return null; |
| 3474 |
} |
| 3475 |
$name = "scale"; |
| 3476 |
$values = [$this->compute_number($values[0]), 1.0]; |
| 3477 |
break; |
| 3478 |
case "scaley": |
| 3479 |
if ($count > 1) { |
| 3480 |
return null; |
| 3481 |
} |
| 3482 |
$name = "scale"; |
| 3483 |
$values = [1.0, $this->compute_number($values[0])]; |
| 3484 |
break; |
| 3485 |
// <angle> units |
| 3486 |
case "rotate": |
| 3487 |
if ($count > 1) { |
| 3488 |
return null; |
| 3489 |
} |
| 3490 |
$values = [$this->compute_angle_or_zero($values[0])]; |
| 3491 |
break; |
| 3492 |
case "skew": |
| 3493 |
if ($count > 2) { |
| 3494 |
return null; |
| 3495 |
} |
| 3496 |
$values = [$this->compute_angle_or_zero($values[0]), isset($values[1]) ? $this->compute_angle_or_zero($values[1]) : 0.0]; |
| 3497 |
break; |
| 3498 |
case "skewx": |
| 3499 |
if ($count > 1) { |
| 3500 |
return null; |
| 3501 |
} |
| 3502 |
$name = "skew"; |
| 3503 |
$values = [$this->compute_angle_or_zero($values[0]), 0.0]; |
| 3504 |
break; |
| 3505 |
case "skewy": |
| 3506 |
if ($count > 1) { |
| 3507 |
return null; |
| 3508 |
} |
| 3509 |
$name = "skew"; |
| 3510 |
$values = [0.0, $this->compute_angle_or_zero($values[0])]; |
| 3511 |
break; |
| 3512 |
default: |
| 3513 |
return null; |
| 3514 |
} |
| 3515 |
foreach ($values as $v) { |
| 3516 |
if ($v === null) { |
| 3517 |
return null; |
| 3518 |
} |
| 3519 |
} |
| 3520 |
$transforms[] = [$name, $values]; |
| 3521 |
} |
| 3522 |
return $transforms; |
| 3523 |
} |
| 3524 |
/** |
| 3525 |
* @link https://www.w3.org/TR/css-transforms-1/#transform-origin-property |
| 3526 |
*/ |
| 3527 |
protected function _compute_transform_origin(string $val) |
| 3528 |
{ |
| 3529 |
$val = \strtolower($val); |
| 3530 |
$parts = $this->parse_property_value($val); |
| 3531 |
$count = \count($parts); |
| 3532 |
if ($count === 0 || $count > 3) { |
| 3533 |
return null; |
| 3534 |
} |
| 3535 |
$v1 = $parts[0]; |
| 3536 |
$v2 = $parts[1] ?? "center"; |
| 3537 |
[$x, $y] = $this->computeBackgroundPositionTransformOrigin($v1, $v2); |
| 3538 |
$z = $count === 3 ? $this->compute_length($parts[2]) : 0.0; |
| 3539 |
if ($x === null || $y === null || $z === null) { |
| 3540 |
return null; |
| 3541 |
} |
| 3542 |
return [$x, $y, $z]; |
| 3543 |
} |
| 3544 |
/** |
| 3545 |
* @param string $val |
| 3546 |
* @return string|null |
| 3547 |
*/ |
| 3548 |
protected function parse_image_resolution(string $val) : ?string |
| 3549 |
{ |
| 3550 |
// If exif data could be get: |
| 3551 |
// $re = '/^\s*(\d+|normal|auto)(?:\s*,\s*(\d+|normal))?\s*$/'; |
| 3552 |
$val = \strtolower($val); |
| 3553 |
$re = '/^\\s*(\\d+|normal|auto)\\s*$/'; |
| 3554 |
if (!\preg_match($re, $val, $matches)) { |
| 3555 |
return null; |
| 3556 |
} |
| 3557 |
return $matches[1]; |
| 3558 |
} |
| 3559 |
/** |
| 3560 |
* auto | normal | dpi |
| 3561 |
*/ |
| 3562 |
protected function _compute_background_image_resolution(string $val) |
| 3563 |
{ |
| 3564 |
return $this->parse_image_resolution($val); |
| 3565 |
} |
| 3566 |
/** |
| 3567 |
* auto | normal | dpi |
| 3568 |
*/ |
| 3569 |
protected function _compute_image_resolution(string $val) |
| 3570 |
{ |
| 3571 |
return $this->parse_image_resolution($val); |
| 3572 |
} |
| 3573 |
/** |
| 3574 |
* @link https://www.w3.org/TR/css-break-3/#propdef-orphans |
| 3575 |
*/ |
| 3576 |
protected function _compute_orphans(string $val) |
| 3577 |
{ |
| 3578 |
return $this->compute_integer($val); |
| 3579 |
} |
| 3580 |
/** |
| 3581 |
* @link https://www.w3.org/TR/css-break-3/#propdef-widows |
| 3582 |
*/ |
| 3583 |
protected function _compute_widows(string $val) |
| 3584 |
{ |
| 3585 |
return $this->compute_integer($val); |
| 3586 |
} |
| 3587 |
/** |
| 3588 |
* @link https://www.w3.org/TR/css-color-4/#propdef-opacity |
| 3589 |
*/ |
| 3590 |
protected function _compute_opacity(string $val) |
| 3591 |
{ |
| 3592 |
$number = self::CSS_NUMBER; |
| 3593 |
$pattern = "/^({$number})(%?)\$/"; |
| 3594 |
if (!\preg_match($pattern, $val, $matches)) { |
| 3595 |
return null; |
| 3596 |
} |
| 3597 |
$v = (float) $matches[1]; |
| 3598 |
$percent = $matches[2] === "%"; |
| 3599 |
$opacity = $percent ? $v / 100 : $v; |
| 3600 |
return \max(0.0, \min($opacity, 1.0)); |
| 3601 |
} |
| 3602 |
/** |
| 3603 |
* @link https://www.w3.org/TR/CSS21//visuren.html#propdef-z-index |
| 3604 |
*/ |
| 3605 |
protected function _compute_z_index(string $val) |
| 3606 |
{ |
| 3607 |
$val = \strtolower($val); |
| 3608 |
if ($val === "auto") { |
| 3609 |
return $val; |
| 3610 |
} |
| 3611 |
return $this->compute_integer($val); |
| 3612 |
} |
| 3613 |
/** |
| 3614 |
* @param FontMetrics $fontMetrics |
| 3615 |
* @return $this |
| 3616 |
*/ |
| 3617 |
public function setFontMetrics(FontMetrics $fontMetrics) |
| 3618 |
{ |
| 3619 |
$this->fontMetrics = $fontMetrics; |
| 3620 |
return $this; |
| 3621 |
} |
| 3622 |
/** |
| 3623 |
* @return FontMetrics |
| 3624 |
*/ |
| 3625 |
public function getFontMetrics() |
| 3626 |
{ |
| 3627 |
return $this->fontMetrics; |
| 3628 |
} |
| 3629 |
/** |
| 3630 |
* Generate a string representation of the Style |
| 3631 |
* |
| 3632 |
* This dumps the entire property array into a string via print_r. Useful |
| 3633 |
* for debugging. |
| 3634 |
* |
| 3635 |
* @return string |
| 3636 |
*/ |
| 3637 |
/*DEBUGCSS print: see below additional debugging util*/ |
| 3638 |
public function __toString() : string |
| 3639 |
{ |
| 3640 |
$parent_font_size = $this->parent_style ? $this->parent_style->font_size : self::$default_font_size; |
| 3641 |
return \print_r(\array_merge(["parent_font_size" => $parent_font_size], $this->_props), \true); |
| 3642 |
} |
| 3643 |
/*DEBUGCSS*/ |
| 3644 |
public function debug_print() : void |
| 3645 |
{ |
| 3646 |
$parent_font_size = $this->parent_style ? $this->parent_style->font_size : self::$default_font_size; |
| 3647 |
print " parent_font_size:" . $parent_font_size . ";\n"; |
| 3648 |
print " Props [\n"; |
| 3649 |
print " specified [\n"; |
| 3650 |
foreach ($this->_props as $prop => $val) { |
| 3651 |
print ' ' . $prop . ': ' . \preg_replace("/\r\n/", ' ', \print_r($val, \true)); |
| 3652 |
if (isset($this->_important_props[$prop])) { |
| 3653 |
print ' !important'; |
| 3654 |
} |
| 3655 |
print ";\n"; |
| 3656 |
} |
| 3657 |
print " ]\n"; |
| 3658 |
print " computed [\n"; |
| 3659 |
foreach ($this->_props_computed as $prop => $val) { |
| 3660 |
print ' ' . $prop . ': ' . \preg_replace("/\r\n/", ' ', \print_r($val, \true)); |
| 3661 |
print ";\n"; |
| 3662 |
} |
| 3663 |
print " ]\n"; |
| 3664 |
print " cached [\n"; |
| 3665 |
foreach ($this->_props_used as $prop => $val) { |
| 3666 |
print ' ' . $prop . ': ' . \preg_replace("/\r\n/", ' ', \print_r($val, \true)); |
| 3667 |
print ";\n"; |
| 3668 |
} |
| 3669 |
print " ]\n"; |
| 3670 |
print " ]\n"; |
| 3671 |
} |
| 3672 |
} |
| 3673 |
|
