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- <?php
- if (file_exists("lib/floIcon.php")) {
- require_once "lib/floIcon.php";
- }
- function _resolve_htmlcolor($color) {
- $htmlcolors = array ("aliceblue" => "#f0f8ff",
- "antiquewhite" => "#faebd7",
- "aqua" => "#00ffff",
- "aquamarine" => "#7fffd4",
- "azure" => "#f0ffff",
- "beige" => "#f5f5dc",
- "bisque" => "#ffe4c4",
- "black" => "#000000",
- "blanchedalmond" => "#ffebcd",
- "blue" => "#0000ff",
- "blueviolet" => "#8a2be2",
- "brown" => "#a52a2a",
- "burlywood" => "#deb887",
- "cadetblue" => "#5f9ea0",
- "chartreuse" => "#7fff00",
- "chocolate" => "#d2691e",
- "coral" => "#ff7f50",
- "cornflowerblue" => "#6495ed",
- "cornsilk" => "#fff8dc",
- "crimson" => "#dc143c",
- "cyan" => "#00ffff",
- "darkblue" => "#00008b",
- "darkcyan" => "#008b8b",
- "darkgoldenrod" => "#b8860b",
- "darkgray" => "#a9a9a9",
- "darkgrey" => "#a9a9a9",
- "darkgreen" => "#006400",
- "darkkhaki" => "#bdb76b",
- "darkmagenta" => "#8b008b",
- "darkolivegreen" => "#556b2f",
- "darkorange" => "#ff8c00",
- "darkorchid" => "#9932cc",
- "darkred" => "#8b0000",
- "darksalmon" => "#e9967a",
- "darkseagreen" => "#8fbc8f",
- "darkslateblue" => "#483d8b",
- "darkslategray" => "#2f4f4f",
- "darkslategrey" => "#2f4f4f",
- "darkturquoise" => "#00ced1",
- "darkviolet" => "#9400d3",
- "deeppink" => "#ff1493",
- "deepskyblue" => "#00bfff",
- "dimgray" => "#696969",
- "dimgrey" => "#696969",
- "dodgerblue" => "#1e90ff",
- "firebrick" => "#b22222",
- "floralwhite" => "#fffaf0",
- "forestgreen" => "#228b22",
- "fuchsia" => "#ff00ff",
- "gainsboro" => "#dcdcdc",
- "ghostwhite" => "#f8f8ff",
- "gold" => "#ffd700",
- "goldenrod" => "#daa520",
- "gray" => "#808080",
- "grey" => "#808080",
- "green" => "#008000",
- "greenyellow" => "#adff2f",
- "honeydew" => "#f0fff0",
- "hotpink" => "#ff69b4",
- "indianred " => "#cd5c5c",
- "indigo " => "#4b0082",
- "ivory" => "#fffff0",
- "khaki" => "#f0e68c",
- "lavender" => "#e6e6fa",
- "lavenderblush" => "#fff0f5",
- "lawngreen" => "#7cfc00",
- "lemonchiffon" => "#fffacd",
- "lightblue" => "#add8e6",
- "lightcoral" => "#f08080",
- "lightcyan" => "#e0ffff",
- "lightgoldenrodyellow" => "#fafad2",
- "lightgray" => "#d3d3d3",
- "lightgrey" => "#d3d3d3",
- "lightgreen" => "#90ee90",
- "lightpink" => "#ffb6c1",
- "lightsalmon" => "#ffa07a",
- "lightseagreen" => "#20b2aa",
- "lightskyblue" => "#87cefa",
- "lightslategray" => "#778899",
- "lightslategrey" => "#778899",
- "lightsteelblue" => "#b0c4de",
- "lightyellow" => "#ffffe0",
- "lime" => "#00ff00",
- "limegreen" => "#32cd32",
- "linen" => "#faf0e6",
- "magenta" => "#ff00ff",
- "maroon" => "#800000",
- "mediumaquamarine" => "#66cdaa",
- "mediumblue" => "#0000cd",
- "mediumorchid" => "#ba55d3",
- "mediumpurple" => "#9370db",
- "mediumseagreen" => "#3cb371",
- "mediumslateblue" => "#7b68ee",
- "mediumspringgreen" => "#00fa9a",
- "mediumturquoise" => "#48d1cc",
- "mediumvioletred" => "#c71585",
- "midnightblue" => "#191970",
- "mintcream" => "#f5fffa",
- "mistyrose" => "#ffe4e1",
- "moccasin" => "#ffe4b5",
- "navajowhite" => "#ffdead",
- "navy" => "#000080",
- "oldlace" => "#fdf5e6",
- "olive" => "#808000",
- "olivedrab" => "#6b8e23",
- "orange" => "#ffa500",
- "orangered" => "#ff4500",
- "orchid" => "#da70d6",
- "palegoldenrod" => "#eee8aa",
- "palegreen" => "#98fb98",
- "paleturquoise" => "#afeeee",
- "palevioletred" => "#db7093",
- "papayawhip" => "#ffefd5",
- "peachpuff" => "#ffdab9",
- "peru" => "#cd853f",
- "pink" => "#ffc0cb",
- "plum" => "#dda0dd",
- "powderblue" => "#b0e0e6",
- "purple" => "#800080",
- "red" => "#ff0000",
- "rosybrown" => "#bc8f8f",
- "royalblue" => "#4169e1",
- "saddlebrown" => "#8b4513",
- "salmon" => "#fa8072",
- "sandybrown" => "#f4a460",
- "seagreen" => "#2e8b57",
- "seashell" => "#fff5ee",
- "sienna" => "#a0522d",
- "silver" => "#c0c0c0",
- "skyblue" => "#87ceeb",
- "slateblue" => "#6a5acd",
- "slategray" => "#708090",
- "slategrey" => "#708090",
- "snow" => "#fffafa",
- "springgreen" => "#00ff7f",
- "steelblue" => "#4682b4",
- "tan" => "#d2b48c",
- "teal" => "#008080",
- "thistle" => "#d8bfd8",
- "tomato" => "#ff6347",
- "turquoise" => "#40e0d0",
- "violet" => "#ee82ee",
- "wheat" => "#f5deb3",
- "white" => "#ffffff",
- "whitesmoke" => "#f5f5f5",
- "yellow" => "#ffff00",
- "yellowgreen" => "#9acd32");
- $color = strtolower($color);
- if (isset($htmlcolors[$color]))
- return $htmlcolors[$color];
- else
- return $color;
- }
- ### RGB >> HSL
- function _color_rgb2hsl($rgb) {
- $r = $rgb[0]; $g = $rgb[1]; $b = $rgb[2];
- $min = min($r, min($g, $b)); $max = max($r, max($g, $b));
- $delta = $max - $min; $l = ($min + $max) / 2; $s = 0;
- if ($l > 0 && $l < 1) {
- $s = $delta / ($l < 0.5 ? (2 * $l) : (2 - 2 * $l));
- }
- $h = 0;
- if ($delta > 0) {
- if ($max == $r && $max != $g) $h += ($g - $b) / $delta;
- if ($max == $g && $max != $b) $h += (2 + ($b - $r) / $delta);
- if ($max == $b && $max != $r) $h += (4 + ($r - $g) / $delta);
- $h /= 6;
- } return array($h, $s, $l);
- }
- ### HSL >> RGB
- function _color_hsl2rgb($hsl) {
- $h = $hsl[0]; $s = $hsl[1]; $l = $hsl[2];
- $m2 = ($l <= 0.5) ? $l * ($s + 1) : $l + $s - $l*$s;
- $m1 = $l * 2 - $m2;
- return array(_color_hue2rgb($m1, $m2, $h + 0.33333),
- _color_hue2rgb($m1, $m2, $h),
- _color_hue2rgb($m1, $m2, $h - 0.33333));
- }
- ### Helper function for _color_hsl2rgb().
- function _color_hue2rgb($m1, $m2, $h) {
- $h = ($h < 0) ? $h + 1 : (($h > 1) ? $h - 1 : $h);
- if ($h * 6 < 1) return $m1 + ($m2 - $m1) * $h * 6;
- if ($h * 2 < 1) return $m2;
- if ($h * 3 < 2) return $m1 + ($m2 - $m1) * (0.66666 - $h) * 6;
- return $m1;
- }
- ### Convert a hex color into an RGB triplet.
- function _color_unpack($hex, $normalize = false) {
- if (strpos($hex, '#') !== 0)
- $hex = _resolve_htmlcolor($hex);
- if (strlen($hex) == 4) {
- $hex = $hex[1] . $hex[1] . $hex[2] . $hex[2] . $hex[3] . $hex[3];
- } $c = hexdec($hex);
- for ($i = 16; $i >= 0; $i -= 8) {
- $out[] = (($c >> $i) & 0xFF) / ($normalize ? 255 : 1);
- } return $out;
- }
- ### Convert an RGB triplet to a hex color.
- function _color_pack($rgb, $normalize = false) {
- foreach ($rgb as $k => $v) {
- $out |= (($v * ($normalize ? 255 : 1)) << (16 - $k * 8));
- }return '#'. str_pad(dechex($out), 6, 0, STR_PAD_LEFT);
- }
- function rgb2hsl($arr) {
- $r = $arr[0];
- $g = $arr[1];
- $b = $arr[2];
- $var_R = ($r / 255);
- $var_G = ($g / 255);
- $var_B = ($b / 255);
- $var_Min = min($var_R, $var_G, $var_B);
- $var_Max = max($var_R, $var_G, $var_B);
- $del_Max = $var_Max - $var_Min;
- $v = $var_Max;
- if ($del_Max == 0) {
- $h = 0;
- $s = 0;
- } else {
- $s = $del_Max / $var_Max;
- $del_R = ((($var_Max - $var_R ) / 6 ) + ($del_Max / 2 ) ) / $del_Max;
- $del_G = ((($var_Max - $var_G ) / 6 ) + ($del_Max / 2 ) ) / $del_Max;
- $del_B = ((($var_Max - $var_B ) / 6 ) + ($del_Max / 2 ) ) / $del_Max;
- if ($var_R == $var_Max) $h = $del_B - $del_G;
- else if ($var_G == $var_Max) $h = (1 / 3 ) + $del_R - $del_B;
- else if ($var_B == $var_Max) $h = (2 / 3 ) + $del_G - $del_R;
- if ($h < 0) $h++;
- if ($h > 1) $h--;
- }
- return array($h, $s, $v);
- }
- function hsl2rgb($arr) {
- $h = $arr[0];
- $s = $arr[1];
- $v = $arr[2];
- if($s == 0) {
- $r = $g = $B = $v * 255;
- } else {
- $var_H = $h * 6;
- $var_i = floor($var_H );
- $var_1 = $v * (1 - $s );
- $var_2 = $v * (1 - $s * ($var_H - $var_i ) );
- $var_3 = $v * (1 - $s * (1 - ($var_H - $var_i ) ) );
- if ($var_i == 0) { $var_R = $v ; $var_G = $var_3 ; $var_B = $var_1 ; }
- else if ($var_i == 1) { $var_R = $var_2 ; $var_G = $v ; $var_B = $var_1 ; }
- else if ($var_i == 2) { $var_R = $var_1 ; $var_G = $v ; $var_B = $var_3 ; }
- else if ($var_i == 3) { $var_R = $var_1 ; $var_G = $var_2 ; $var_B = $v ; }
- else if ($var_i == 4) { $var_R = $var_3 ; $var_G = $var_1 ; $var_B = $v ; }
- else { $var_R = $v ; $var_G = $var_1 ; $var_B = $var_2 ; }
- $r = $var_R * 255;
- $g = $var_G * 255;
- $B = $var_B * 255;
- }
- return array($r, $g, $B);
- }
- function colorPalette($imageFile, $numColors, $granularity = 5) {
- $granularity = max(1, abs((int)$granularity));
- $colors = array();
- $size = @getimagesize($imageFile);
- // to enable .ico support place floIcon.php into lib/
- if (strtolower($size['mime']) == 'image/vnd.microsoft.icon') {
- if (class_exists("floIcon")) {
- $ico = new floIcon();
- @$ico->readICO($imageFile);
- if(count($ico->images)==0)
- return false;
- else
- $img = @$ico->images[count($ico->images)-1]->getImageResource();
- } else {
- return false;
- }
- } else if ($size[0] > 0 && $size[1] > 0) {
- $img = @imagecreatefromstring(file_get_contents($imageFile));
- }
- if (!$img) return false;
- for($x = 0; $x < $size[0]; $x += $granularity) {
- for($y = 0; $y < $size[1]; $y += $granularity) {
- $thisColor = imagecolorat($img, $x, $y);
- $rgb = imagecolorsforindex($img, $thisColor);
- $red = round(round(($rgb['red'] / 0x33)) * 0x33);
- $green = round(round(($rgb['green'] / 0x33)) * 0x33);
- $blue = round(round(($rgb['blue'] / 0x33)) * 0x33);
- $thisRGB = sprintf('%02X%02X%02X', $red, $green, $blue);
- if(array_key_exists($thisRGB, $colors)) {
- $colors[$thisRGB]++;
- } else{
- $colors[$thisRGB] = 1;
- }
- }
- }
- arsort($colors);
- return array_slice(array_keys($colors), 0, $numColors);
- }
- function calculate_avg_color($iconFile) {
- $palette = colorPalette($iconFile, 4, 4);
- if (is_array($palette)) {
- foreach ($palette as $p) {
- $hsl = rgb2hsl(_color_unpack("#$p"));
- if ($hsl[1] > 0.25 && $hsl[2] > 0.25 &&
- !($hsl[0] >= 0 && $hsl[0] < 0.01 && $hsl[1] < 0.01) &&
- !($hsl[0] >= 0 && $hsl[0] < 0.01 && $hsl[2] > 0.99)) {
- return _color_pack(hsl2rgb($hsl));
- }
- }
- }
- return '';
- }
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