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webapp/library/icon.php

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<?php
final class Icon {
private $_width;
private $_height;
private $_hash;
private $_spriteZ = 800;
public function generateImageResource($hash, $width, $height, $filter = false, $radius = 0) {
$this->_width = $width;
$this->_height = $height;
$this->_hash = $hash;
$csh = hexdec(substr($this->_hash, 0, 1)); // corner sprite shape
$ssh = hexdec(substr($this->_hash, 1, 1)); // side sprite shape
$xsh = hexdec(substr($this->_hash, 2, 1)) & 7; // center sprite shape
$cro = hexdec(substr($this->_hash, 3, 1)) & 3; // corner sprite rotation
$sro = hexdec(substr($this->_hash, 4, 1)) & 3; // side sprite rotation
$xbg = hexdec(substr($this->_hash, 5, 1)) % 2; // center sprite background
$cfr = hexdec(substr($this->_hash, 6, 2));
$cfg = hexdec(substr($this->_hash, 8, 2));
$cfb = hexdec(substr($this->_hash, 10, 2));
$sfr = hexdec(substr($this->_hash, 12, 2));
$sfg = hexdec(substr($this->_hash, 14, 2));
$sfb = hexdec(substr($this->_hash, 16, 2));
$identicon = imagecreatetruecolor($this->_spriteZ * 3, $this->_spriteZ * 3);
if (function_exists('imageantialias')) {
imageantialias($identicon, TRUE);
}
$bg = imagecolorallocate($identicon, 255, 255, 255);
imagefilledrectangle($identicon, 0, 0, $this->_spriteZ, $this->_spriteZ, $bg);
$corner = $this->_getSprite($csh, $cfr, $cfg, $cfb, $cro);
imagecopy($identicon, $corner, 0, 0, 0, 0, $this->_spriteZ, $this->_spriteZ);
$corner = imagerotate($corner, 90, $bg);
imagecopy($identicon, $corner, 0, $this->_spriteZ * 2, 0, 0, $this->_spriteZ, $this->_spriteZ);
$corner = imagerotate($corner, 90, $bg);
imagecopy($identicon, $corner, $this->_spriteZ * 2, $this->_spriteZ * 2, 0, 0, $this->_spriteZ, $this->_spriteZ);
$corner = imagerotate($corner, 90, $bg);
imagecopy($identicon, $corner, $this->_spriteZ * 2, 0, 0, 0, $this->_spriteZ, $this->_spriteZ);
$side = $this->_getSprite($ssh, $sfr, $sfg, $sfb, $sro);
imagecopy($identicon, $side, $this->_spriteZ, 0, 0, 0, $this->_spriteZ, $this->_spriteZ);
$side = imagerotate($side, 90, $bg);
imagecopy($identicon, $side, 0, $this->_spriteZ, 0, 0, $this->_spriteZ, $this->_spriteZ);
$side = imagerotate($side, 90, $bg);
imagecopy($identicon, $side, $this->_spriteZ, $this->_spriteZ * 2, 0, 0, $this->_spriteZ, $this->_spriteZ);
$side = imagerotate($side, 90, $bg);
imagecopy($identicon, $side, $this->_spriteZ * 2, $this->_spriteZ, 0, 0, $this->_spriteZ, $this->_spriteZ);
$center = $this->_getCenter($xsh, $cfr, $cfg, $cfb, $sfr, $sfg, $sfb, $xbg);
imagecopy($identicon, $center, $this->_spriteZ, $this->_spriteZ, 0, 0, $this->_spriteZ, $this->_spriteZ);
imagecolortransparent($identicon, $bg);
$resized = imagecreatetruecolor($this->_width, $this->_height);
if (function_exists('imageantialias')) {
imageantialias($resized, TRUE);
}
$bg = imagecolorallocate($resized, 255, 255, 255);
imagefilledrectangle($resized, 0, 0, $this->_width, $this->_height, $bg);
imagecopyresampled($resized, $identicon, 0, 0, (imagesx($identicon) - $this->_spriteZ * 3) / 2, (imagesx($identicon) - $this->_spriteZ * 3) / 2, $this->_width, $this->_height, $this->_spriteZ * 3, $this->_spriteZ * 3);
if ($filter) {
imagefilter($resized, $filter);
}
if ($radius) {
imagearc($resized, $radius-1, $radius-1, $radius*2, $radius*2, 180, 270, $bg);
imagefilltoborder($resized, 0, 0, $bg, $bg);
imagearc($resized, $this->_width-$radius, $radius-1, $radius*2, $radius*2, 270, 0, $bg);
imagefilltoborder($resized, $this->_width-1, 0, $bg, $bg);
imagearc($resized, $radius-1, $this->_height-$radius, $radius*2, $radius*2, 90, 180, $bg);
imagefilltoborder($resized, 0, $this->_height-1, $bg, $bg);
imagearc($resized, $this->_width-$radius, $this->_height-$radius, $radius*2, $radius*2, 0, 90, $bg);
imagefilltoborder($resized, $this->_width-1, $this->_height-1, $bg, $bg);
imagecolortransparent($resized, $bg);
}
ob_start();
imagepng($resized);
imagedestroy($resized);
return ob_get_clean();
}
private function _getSprite($shape, $R, $G, $B, $rotation) {
$sprite = imagecreatetruecolor($this->_spriteZ, $this->_spriteZ);
if (function_exists('imageantialias')) {
imageantialias($sprite, TRUE);
}
$fg = imagecolorallocate($sprite, $R, $G, $B);
$bg = imagecolorallocate($sprite, 255, 255, 255);
imagefilledrectangle($sprite, 0, 0, $this->_spriteZ, $this->_spriteZ, $bg);
switch ($shape) {
case 0: // triangle
$shape = array(0.5, 1, 1, 0, 1, 1);
break;
case 1: // parallelogram
$shape = array(0.5, 0, 1, 0, 0.5, 1, 0, 1);
break;
case 2: // mouse ears
$shape = array(0.5, 0, 1, 0, 1, 1, 0.5, 1, 1, 0.5);
break;
case 3: // ribbon
$shape = array(0, 0.5, 0.5, 0, 1, 0.5, 0.5, 1, 0.5, 0.5);
break;
case 4: // sails
$shape = array(0, 0.5, 1, 0, 1, 1, 0, 1, 1, 0.5);
break;
case 5: // fins
$shape = array(1, 0, 1, 1, 0.5, 1, 1, 0.5, 0.5, 0.5);
break;
case 6: // beak
$shape = array(0, 0, 1, 0, 1, 0.5, 0, 0, 0.5, 1, 0, 1);
break;
case 7: // chevron
$shape = array(0, 0, 0.5, 0, 1, 0.5, 0.5, 1, 0, 1, 0.5, 0.5);
break;
case 8: // fish
$shape = array(0.5, 0, 0.5, 0.5, 1, 0.5, 1, 1, 0.5, 1, 0.5, 0.5, 0, 0.5);
break;
case 9: // kite
$shape = array(0, 0, 1, 0, 0.5, 0.5, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
break;
case 10: // trough
$shape = array(0, 0.5, 0.5, 1, 1, 0.5, 0.5, 0, 1, 0, 1, 1, 0, 1);
break;
case 11: // rays
$shape = array(0.5, 0, 1, 0, 1, 1, 0.5, 1, 1, 0.75, 0.5, 0.5, 1, 0.25);
break;
case 12: // double rhombus
$shape = array(0, 0.5, 0.5, 0, 0.5, 0.5, 1, 0, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
break;
case 13: // crown
$shape = array(0, 0, 1, 0, 1, 1, 0, 1, 1, 0.5, 0.5, 0.25, 0.5, 0.75, 0, 0.5, 0.5, 0.25);
break;
case 14: // radioactive
$shape = array(0, 0.5, 0.5, 0.5, 0.5, 0, 1, 0, 0.5, 0.5, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
break;
default: // tiles
$shape = array(0, 0, 1, 0, 0.5, 0.5, 0.5, 0, 0, 0.5, 1, 0.5, 0.5, 1, 0.5, 0.5, 0, 1);
break;
}
for ($i = 0; $i < count($shape); $i++)
$shape[$i] = $shape[$i] * $this->_spriteZ;
imagefilledpolygon($sprite, $shape, count($shape) / 2, $fg);
for ($i = 0; $i < $rotation; $i++)
$sprite = imagerotate($sprite, 90, $bg);
return $sprite;
}
private function _getCenter($shape, $fR, $fG, $fB, $bR, $bG, $bB, $usebg) {
$sprite = imagecreatetruecolor($this->_spriteZ, $this->_spriteZ);
if (function_exists('imageantialias')) {
imageantialias($sprite, TRUE);
}
$fg = imagecolorallocate($sprite, $fR, $fG, $fB);
if ($usebg > 0 && (abs($fR - $bR) > 127 || abs($fG - $bG) > 127 || abs($fB - $bB) > 127))
$bg = imagecolorallocate($sprite, $bR, $bG, $bB); else
$bg = imagecolorallocate($sprite, 255, 255, 255);
imagefilledrectangle($sprite, 0, 0, $this->_spriteZ, $this->_spriteZ, $bg);
switch ($shape) {
case 0: // empty
$shape = array();
break;
case 1: // fill
$shape = array(0, 0, 1, 0, 1, 1, 0, 1);
break;
case 2: // diamond
$shape = array(0.5, 0, 1, 0.5, 0.5, 1, 0, 0.5);
break;
case 3: // reverse diamond
$shape = array(0, 0, 1, 0, 1, 1, 0, 1, 0, 0.5, 0.5, 1, 1, 0.5, 0.5, 0, 0, 0.5);
break;
case 4: // cross
$shape = array(0.25, 0, 0.75, 0, 0.5, 0.5, 1, 0.25, 1, 0.75, 0.5, 0.5, 0.75, 1, 0.25, 1, 0.5, 0.5, 0, 0.75, 0, 0.25, 0.5, 0.5);
break;
case 5: // morning star
$shape = array(0, 0, 0.5, 0.25, 1, 0, 0.75, 0.5, 1, 1, 0.5, 0.75, 0, 1, 0.25, 0.5);
break;
case 6: // small square
$shape = array(0.33, 0.33, 0.67, 0.33, 0.67, 0.67, 0.33, 0.67);
break;
case 7: // checkerboard
$shape = array(0, 0, 0.33, 0, 0.33, 0.33, 0.66, 0.33, 0.67, 0, 1, 0, 1, 0.33, 0.67, 0.33, 0.67, 0.67, 1, 0.67, 1, 1, 0.67, 1, 0.67, 0.67, 0.33, 0.67, 0.33, 1, 0, 1, 0, 0.67, 0.33, 0.67, 0.33, 0.33, 0, 0.33);
break;
}
for ($i = 0; $i < count($shape); $i++)
$shape[$i] = $shape[$i] * $this->_spriteZ;
if (count($shape) > 0)
imagefilledpolygon($sprite, $shape, count($shape) / 2, $fg);
return $sprite;
}
}