| 2,8 → 2,8 |
|---|
| |
| /* |
| * Color Utils for PHP |
| * Copyright 2019 - 2022 Daniel Marschall, ViaThinkSoft |
| * Revision 2022-12-27 |
| * Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft |
| * Revision 2023-01-03 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| 103,13 → 103,12 |
|---|
| return '#'.$color; |
| } |
| |
| function changeHueOfCSS($css_content, $h_shift=0, $s_shift=0, $v_shift=0) { |
| // TODO: also support rgb() and rgba() color references (and maybe also hsl/hsla and color names?) |
| // TODO: Bootstrap uses "--bs-link-color-rgb: 13,110,253;" which we must also accept |
| // TODO: Also support hsl() and hsla() color schemes |
| function changeCSSWithRgbFunction($css_content, $rgb_function) { |
| $css_content = preg_replace('@(\\}\\s*)#@ismU', '\\1'.chr(1), $css_content); |
| $css_content = preg_replace('@(^\\s*)#@isU', '\\1'.chr(1), $css_content); |
| $css_content = preg_replace_callback('@#([0-9a-fA-F]{6}|[0-9a-fA-F]{3})@ismU', |
| function ($x) use ($h_shift, $s_shift, $v_shift) { |
| function ($x) use ($rgb_function) { |
| if (strlen($x[1]) == 3) { |
| $r = hexdec($x[1][0].$x[1][0]); |
| $g = hexdec($x[1][1].$x[1][1]); |
| 119,6 → 118,41 |
|---|
| $g = hexdec($x[1][2].$x[1][3]); |
| $b = hexdec($x[1][4].$x[1][5]); |
| } |
| $rgb_function($r,$g,$b); |
| return rgb2html($r,$g,$b); |
| }, $css_content); |
| $css_content = preg_replace_callback('@rgb\\s*\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*\\)@ismU', |
| function ($x) use ($rgb_function) { |
| $r = $x[1]; |
| $g = $x[2]; |
| $b = $x[3]; |
| $rgb_function($r,$g,$b); |
| return "rgb($r,$g,$b)"; |
| }, $css_content); |
| $css_content = preg_replace_callback('@rgba\\s*\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*([\\d\\.]+)\\s*\\)@ismU', |
| function ($x) use ($rgb_function) { |
| $r = $x[1]; |
| $g = $x[2]; |
| $b = $x[3]; |
| $a = $x[4]; |
| $rgb_function($r,$g,$b); |
| return "rgba($r,$g,$b,$a)"; |
| }, $css_content); |
| $css_content = preg_replace_callback('@\\-rgb:\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*;@ismU', |
| // Bootstrap uses "--bs-link-color-rgb: 13,110,253;" which we must also accept |
| function ($x) use ($rgb_function) { |
| $r = $x[1]; |
| $g = $x[2]; |
| $b = $x[3]; |
| $rgb_function($r,$g,$b); |
| return "-rgb:$r,$g,$b;"; |
| }, $css_content); |
| $css_content = str_replace(chr(1), '#', $css_content); |
| return $css_content; |
| } |
| |
| function changeHueOfCSS($css_content, $h_shift=0, $s_shift=0, $v_shift=0) { |
| $rgb_function = function(&$r,&$g,&$b) use ($h_shift, $s_shift, $v_shift) { |
| list ($h,$s,$v) = RGB_TO_HSV($r, $g, $b); |
| $h = (float)$h; |
| $s = (float)$s; |
| 127,33 → 161,15 |
|---|
| $s = ($s + $s_shift); while ($s > 1) $s = 1; while ($s < 0) $s = 0; |
| $v = ($v + $v_shift); while ($v > 1) $v = 1; while ($v < 0) $v = 0; |
| list ($r,$g,$b) = HSV_TO_RGB($h, $s, $v); |
| return rgb2html($r,$g,$b); |
| }, $css_content); |
| $css_content = str_replace(chr(1), '#', $css_content); |
| return $css_content; |
| }; |
| return changeCSSWithRgbFunction($css_content, $rgb_function); |
| } |
| |
| function invertColorsOfCSS($css_content) { |
| // TODO: also support rgb() and rgba() color references (and maybe also hsl/hsla and color names?) |
| // TODO: Bootstrap uses "--bs-link-color-rgb: 13,110,253;" which we must also accept |
| $css_content = preg_replace('@(\\}\\s*)#@ismU', '\\1'.chr(1), $css_content); |
| $css_content = preg_replace('@(^\\s*)#@isU', '\\1'.chr(1), $css_content); |
| $css_content = preg_replace_callback('@#([0-9a-fA-F]{6}|[0-9a-fA-F]{3})@ismU', |
| function ($x) { |
| if (strlen($x[1]) == 3) { |
| $r = hexdec($x[1][0].$x[1][0]); |
| $g = hexdec($x[1][1].$x[1][1]); |
| $b = hexdec($x[1][2].$x[1][2]); |
| } else { |
| $r = hexdec($x[1][0].$x[1][1]); |
| $g = hexdec($x[1][2].$x[1][3]); |
| $b = hexdec($x[1][4].$x[1][5]); |
| } |
| $rgb_function = function(&$r,&$g,&$b) { |
| $r = 255 - $r; |
| $g = 255 - $g; |
| $b = 255 - $b; |
| return rgb2html($r,$g,$b); |
| }, $css_content); |
| $css_content = str_replace(chr(1), '#', $css_content); |
| return $css_content; |
| }; |
| return changeCSSWithRgbFunction($css_content, $rgb_function); |
| } |