| @@ -201,82 +201,8 @@ | ||
| 201 | 201 | return self::contrast($background, $light) >= self::contrast($background, $dark) ? $light : $dark; |
| 202 | 202 | } |
| 203 | 203 | |
| 204 | 204 | /** |
| 205 | - * A text colour that reads on a background (WCAG 4.5:1) wherever one can. | |
| 206 | - * | |
| 207 | - * readableOn()'s usual pair is kept whenever it reads, so every partner it | |
| 208 | - * already made readable is unchanged. On a mid-tone background neither | |
| 209 | - * half of that pair reaches 4.5:1 (#809400 peaks at 4.30:1 with #1f2937); | |
| 210 | - * pure black or white — whichever reads better — goes further, and is | |
| 211 | - * taken only when it does. | |
| 212 | - * | |
| 213 | - * @param string $background | |
| 214 | - * @return string | |
| 215 | - */ | |
| 216 | - public static function readableText($background): string | |
| 217 | - { | |
| 218 | - $picked = self::readableOn($background); | |
| 219 | - $pickedContrast = self::contrast($background, $picked); | |
| 220 | - | |
| 221 | - if ($pickedContrast >= 4.5) { | |
| 222 | - return $picked; | |
| 223 | - } | |
| 224 | - | |
| 225 | - $extreme = self::contrast($background, '#ffffff') >= self::contrast($background, '#000000') | |
| 226 | - ? '#ffffff' | |
| 227 | - : '#000000'; | |
| 228 | - | |
| 229 | - return self::contrast($background, $extreme) > $pickedContrast ? $extreme : $picked; | |
| 230 | - } | |
| 231 | - | |
| 232 | - /** | |
| 233 | - * Mix text into a surface, keeping as little of the text as still reads. | |
| 234 | - * | |
| 235 | - * Starts at $percent of the text and moves toward it in small steps until | |
| 236 | - * the mix reaches $minimum contrast on the surface — a mix that already | |
| 237 | - * reads is returned unchanged. Text that does not read on the surface | |
| 238 | - * itself comes back as the text: nothing between the two reads better. | |
| 239 | - * | |
| 240 | - * @param string $text | |
| 241 | - * @param string $surface | |
| 242 | - * @param int $percent Starting share of the text, 0-100. | |
| 243 | - * @param float $minimum | |
| 244 | - * @return string Hex, or '' when either colour is unreadable. | |
| 245 | - */ | |
| 246 | - public static function readableMix($text, $surface, int $percent, float $minimum = 4.5): string | |
| 247 | - { | |
| 248 | - if (!self::parse($text) || !self::parse($surface)) { | |
| 249 | - return ''; | |
| 250 | - } | |
| 251 | - | |
| 252 | - for ($share = max(0, $percent); $share < 100; $share += 2) { | |
| 253 | - $mixed = self::mix($text, $surface, $share); | |
| 254 | - | |
| 255 | - if (self::contrast($surface, $mixed) >= $minimum) { | |
| 256 | - return $mixed; | |
| 257 | - } | |
| 258 | - } | |
| 259 | - | |
| 260 | - return self::hex($text); | |
| 261 | - } | |
| 262 | - | |
| 263 | - /** | |
| 264 | - * Move a colour away from itself — lighter when it is dark, darker when it | |
| 265 | - * is light. How a hover is derived from a button that states none. | |
| 266 | - * | |
| 267 | - * @param string $color | |
| 268 | - * @param int $percent | |
| 269 | - * @return string | |
| 270 | - */ | |
| 271 | - public static function shiftFromItself($color, int $percent = 12): string | |
| 272 | - { | |
| 273 | - return self::isDark($color) | |
| 274 | - ? self::lighten($color, $percent) | |
| 275 | - : self::darken($color, $percent); | |
| 276 | - } | |
| 277 | - | |
| 278 | - /** | |
| 279 | 205 | * Nudge a colour toward white. |
| 280 | 206 | * |
| 281 | 207 | * @param string $color |
| 282 | 208 | * @param int $percent |
