123 lines
4.5 KiB
PHP
Executable File
123 lines
4.5 KiB
PHP
Executable File
<?php
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namespace Moebooru;
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use Imagick;
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abstract class Resizer
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{
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static public function resize($file_ext, $read_path, $write_path, $output_size, $output_quality)
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{
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list ($read_w, $read_h) = getimagesize($read_path);
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extract($output_size);
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!isset($width) && $width = $read_w;
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!isset($height) && $height = $read_h;
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!isset($crop_top) && $crop_top = 0;
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!isset($crop_bottom) && $crop_bottom = $read_h;
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!isset($crop_left) && $crop_left = 0;
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!isset($crop_right) && $crop_right = $read_w;
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!isset($crop_width) && $crop_width = $crop_right - $crop_left;
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!isset($crop_height) && $crop_height = $crop_bottom - $crop_top;
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if (class_exists('Imagick', false)) {
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$image = new Imagick($read_path);
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/**
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* Coalesce GIF if it has many layers (animated),
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* to ensure a good output. Otherwise the resulting image could
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* look "corrupt".
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*/
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if ($file_ext == 'gif' && $image->getNumberImages()) {
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$image = $image->coalesceImages()->current();
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}
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$image->cropImage($crop_width, $crop_height, $crop_left, $crop_top);
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$image->thumbnailImage($width, $height);
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$image->setImageFormat('jpg');
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$fh = fopen($write_path, 'w');
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$image->writeImageFile($fh);
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fclose($fh);
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} else {
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$sample = imagecreatetruecolor($width, $height);
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$gray = imagecolorallocate($sample, CONFIG()->bgcolor[0], CONFIG()->bgcolor[1], CONFIG()->bgcolor[2]);
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imagefilledrectangle($sample, 0, 0, $width, $height, $gray);
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$e = '';
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switch($file_ext) {
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case 'jpg':
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$source = imagecreatefromjpeg($read_path);
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break;
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case 'png':
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$source = imagecreatefrompng($read_path);
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break;
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case 'gif':
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$source = imagecreatefromgif($read_path);
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break;
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default:
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$e = 'Wrong file extension';
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break;
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}
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if (!$e) {
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if (!$source)
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$e = "Error while creating image resource";
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elseif (!imagecopyresampled($sample, $source, 0, 0, $crop_left, $crop_top, $width, $height, $crop_width, $crop_height))
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$e = "Error while resampling image";
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elseif (!imagejpeg($sample, $write_path, $output_quality))
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$e = "Error while writing image";
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}
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if ($e) {
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throw new Exception\ResizeErrorException($e);
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}
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}
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}
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static public function reduce_to($size, $max_size, $ratio = 1, $allow_enlarge = false, $min_max = false)
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{
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$ret = $size;
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if ($min_max) {
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if (($max_size['width'] < $max_size['height']) != ($size['width'] < $size['height'])) {
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list($max_size['width'], $max_size['height']) = array($max_size['height'], $max_size['width']);
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}
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}
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if ($allow_enlarge) {
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if ($ret['width'] < $max_size['width']) {
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$scale = (float)$max_size['width']/(float)$ret['width'];
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$ret['width'] = $ret['width'] * $scale;
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$ret['height'] = $ret['height'] * $scale;
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}
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if (($max_size['height'] && $ret['height']) < ($ratio*$max_size['height'])) {
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$scale = (float)$max_size['height']/(float)$ret['height'];
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$ret['width'] = $ret['width'] * $scale;
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$ret['height'] = $ret['height'] * $scale;
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}
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}
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if ($ret['width'] > $ratio*$max_size['width']) {
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$scale = (float)$max_size['width']/(float)$ret['width'];
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$ret['width'] = $ret['width'] * $scale;
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$ret['height'] = $ret['height'] * $scale;
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}
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if ($max_size['height'] && ($ret['height'] > $ratio*$max_size['height'])) {
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$scale = (float)$max_size['height']/(float)$ret['height'];
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$ret['width'] = $ret['width'] * $scale;
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$ret['height'] = $ret['height'] * $scale;
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}
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$ret['width'] = round($ret['width']);
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$ret['height'] = round($ret['height']);
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return $ret;
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}
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}
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