<?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 = $rgb[2];
### Convert a hex color into an RGB triplet.
function _color_unpack($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);
} else {
$s = $del_Max / $var_Max;
- $del_R = ( ( ( $max - $var_R ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max;
- $del_G = ( ( ( $max - $var_G ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max;
- $del_B = ( ( ( $max - $var_B ) / 6 ) + ( $del_Max / 2 ) ) / $del_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 - $del_R;
+ else if ($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) $h--;
+ if ($h < 0) $h++;
+ if ($h > 1) $h--;
}
return array($h, $s, $v);
$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 ) ) );
+ $var_i = floor($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 = $var_1 ; }
return array($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 '';
+ }
+
git.wh0rd.org / tt-rss.git / blobdiff