fluent-cart / app / Services / Theme / ColorPaletteGenerator.php

ColorPaletteGenerator.php in FluentCart A New Era of eCommerce – Faster, Lighter, and Simpler 1.6.4, at app/Services/Theme/ColorPaletteGenerator.php

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1	<?php
2
3	namespace FluentCart\App\Services\Theme;
4
5	class ColorPaletteGenerator {
6
7	private function hexToRgb($hex) {
8	$hex = str_replace("#", "", $hex);
9
10	if (strlen($hex) == 3) {
11	$r = hexdec(substr($hex, 0, 1) . substr($hex, 0, 1));
12	$g = hexdec(substr($hex, 1, 1) . substr($hex, 1, 1));
13	$b = hexdec(substr($hex, 2, 1) . substr($hex, 2, 1));
14	} else {
15	$r = hexdec(substr($hex, 0, 2));
16	$g = hexdec(substr($hex, 2, 2));
17	$b = hexdec(substr($hex, 4, 2));
18	}
19
20	return array('r' => $r, 'g' => $g, 'b' => $b);
21	}
22
23	private function rgbToHex($r, $g, $b) {
24	return sprintf("#%02x%02x%02x", $r, $g, $b);
25	}
26
27	private function rgbToHsl($r, $g, $b) {
28	$r /= 255;
29	$g /= 255;
30	$b /= 255;
31
32	$max = max($r, $g, $b);
33	$min = min($r, $g, $b);
34
35	$h = 0;
36	$s = 0;
37	$l = ($max + $min) / 2;
38	$d = $max - $min;
39
40	if ($d != 0) {
41	$s = $d / (1 - abs(2 * $l - 1));
42
43	switch ($max) {
44	case $r:
45	$h = 60 * fmod((($g - $b) / $d), 6);
46	if ($b > $g) {
47	$h += 360;
48	}
49	break;
50
51	case $g:
52	$h = 60 * (($b - $r) / $d + 2);
53	break;
54
55	case $b:
56	$h = 60 * (($r - $g) / $d + 4);
57	break;
58	}
59	}
60
61	return array(round($h), round($s * 100), round($l * 100));
62	}
63
64	private function hslToRgb($h, $s, $l) {
65	$h /= 360;
66	$s /= 100;
67	$l /= 100;
68
69	$r = 0;
70	$g = 0;
71	$b = 0;
72
73	$c = (1 - abs(2 * $l - 1)) * $s;
74	$x = $c * (1 - abs(fmod(($h * 6), 2) - 1));
75	$m = $l - ($c / 2);
76
77	if (0 <= $h && $h < 1/6) {
78	$r = $c;
79	$g = $x;
80	$b = 0;
81	} else if (1/6 <= $h && $h < 1/3) {
82	$r = $x;
83	$g = $c;
84	$b = 0;
85	} else if (1/3 <= $h && $h < 1/2) {
86	$r = 0;
87	$g = $c;
88	$b = $x;
89	} else if (1/2 <= $h && $h < 2/3) {
90	$r = 0;
91	$g = $x;
92	$b = $c;
93	} else if (2/3 <= $h && $h < 5/6) {
94	$r = $x;
95	$g = 0;
96	$b = $c;
97	} else if (5/6 <= $h && $h < 1) {
98	$r = $c;
99	$g = 0;
100	$b = $x;
101	} else {
102	$r = 0;
103	$g = 0;
104	$b = 0;
105	}
106
107	$r = ($r + $m) * 255;
108	$g = ($g + $m) * 255;
109	$b = ($b + $m) * 255;
110
111	return array(round($r), round($g), round($b));
112	}
113
114	private function contrastColor($color): array {
115	$d = 0;
116
117	// Counting the perceptive luminance - human eye favors green color...
118	$luminance = (0.299 * $color['r'] + 0.587 * $color['g'] + 0.114 * $color['b']) / 255;
119
120	if ($luminance > 0.5)
121	$d = 0; // bright colors - black font
122	else
123	$d = 255; // dark colors - white font
124
125	return array('r' => $d, 'g' => $d, 'b' => $d);
126	}
127
128	public function generateColorPalette($hex) {
129	$rgb = $this->hexToRgb($hex);
130	$textColor = $this->contrastColor($rgb);
131
132	$palette = array();
133
134	// Title color (darker)
135	$titleRgb = $this->contrastColor($rgb);
136	$palette['title'] = $this->rgbToHex($titleRgb['r'], $titleRgb['g'], $titleRgb['b']);
137
138	// Subtitle color (lighter)
139	$subtitleRgb = $this->contrastColor($rgb);
140	$palette['subtitle'] = $this->rgbToHex($subtitleRgb['r'], $subtitleRgb['g'], $subtitleRgb['b']);
141
142	// Button color (more saturated and slightly lighter)
143	$buttonRgb = $this->contrastColor($rgb);
144	$palette['button'] = $this->rgbToHex($buttonRgb['r'], $buttonRgb['g'], $buttonRgb['b']);
145
146	return $palette;
147	}
148
149	}
150