diff options
Diffstat (limited to 'include/colors.php')
| -rw-r--r-- | include/colors.php | 82 |
1 files changed, 71 insertions, 11 deletions
diff --git a/include/colors.php b/include/colors.php index d1e970728..41bf7b819 100644 --- a/include/colors.php +++ b/include/colors.php @@ -1,5 +1,7 @@ <?php +require_once "lib/floIcon.php"; + function _resolve_htmlcolor($color) { $htmlcolors = array ("aliceblue" => "#f0f8ff", "antiquewhite" => "#faebd7", @@ -235,16 +237,16 @@ function rgb2hsl($arr) { } 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, $v); @@ -259,10 +261,10 @@ function hsl2rgb($arr) { $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 = $var_1 ; } @@ -278,4 +280,62 @@ function hsl2rgb($arr) { return array($r, $g, $B); } + function colorPalette($imageFile, $numColors, $granularity = 5) { + $granularity = max(1, abs((int)$granularity)); + $colors = array(); + + $size = @getimagesize($imageFile); + + if (!defined('_DISABLE_FLOICON') && strtolower($size['mime']) == 'image/vnd.microsoft.icon') { + $ico = new floIcon(); + @$ico->readICO($imageFile); + + if(count($ico->images)==0) + return null; + else + $img = @$ico->images[count($ico->images)-1]->getImageResource(); + + } else { + $img = @imagecreatefromstring(file_get_contents($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 ''; + } ?> |