mirror of
https://github.com/gtbu/Typesetter-5.3-p8.git
synced 2024-11-14 02:39:19 +01:00
576 lines
15 KiB
PHP
576 lines
15 KiB
PHP
<?php
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namespace gp\tool{
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defined('is_running') or die('Not an entry point...');
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includeFile('thirdparty/jpeg-icc/autoload.php');
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includeFile('tool/ImageMeta.php');
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class Image{
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/**
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* Reduce the size of an image according to $max_area
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*
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* @since 1.7
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*
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* @param string $img_path location of the image
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* @param int $max_area Maximum area of the image: 600x800 pixels = 480,000 sq/pixels
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* @return bool true if the image doesn't need to be reduced or if a reduction is made
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*/
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static function CheckArea($img_path,$max_area=1024000){
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global $config, $dataDir;
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$src_img = self::getSrcImg($img_path); //memory usage before and after this call are small 1093804 vs 1094616
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if( $src_img === false ){
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return false;
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}
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//Original Size
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$old_x = imagesx($src_img);
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$old_y = imagesy($src_img);
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$old_area = ($old_x * $old_y);
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//don't enlarge check 1
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if( $old_area < $max_area ){
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return true;
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}
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//Calculate the new size
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$inv_ratio = $old_y / $old_x;
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$new_y = sqrt($max_area * $inv_ratio);
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$new_y = round($new_y);
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$new_x = round($max_area / $new_y);
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//don't enlarge check 2
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$new_area = ($new_y * $new_x);
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if( $new_area > $old_area ){
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return true;
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}
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$src_path = $img_path;
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$result = self::createImg($src_img, $img_path, 0, 0, 0, 0, $new_x, $new_y, $old_x, $old_y, false, false, $src_path);
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@chmod($img_path, gp_chmod_file);
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return $result;
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}
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/**
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* Create a square image at $dest_path from an image at $source_path
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*
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* @param string $source_path location of the source image
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* @param string $dest_path location of the image to be created
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* @param int $size the dimension of the image
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* @param string $type_file a string representing the type of the source file (png, jpg)
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* @return bool
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*/
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static function createSquare($source_path,$dest_path,$size=50,$type_file=false){
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global $config;
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$img_type = self::getType($source_path);
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if( strpos('svgz', $img_type) === 0 ){
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// image is SVG
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return self::CreateRectSVG($source_path,$dest_path,$size,$size,false);
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}
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$new_w = $new_h = $size;
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$src_img = self::getSrcImg($source_path,$type_file);
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if( $src_img === false ){
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return false;
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}
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//Size
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$old_x = imagesx($src_img);
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$old_y = imagesy($src_img);
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if( $old_x > $old_y ){
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$off_w = ($old_x - $old_y) / 2;
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$off_h = 0;
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$old_x = $old_y;
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}elseif( $old_y > $old_x ){
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$off_w = 0;
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$off_h = ($old_y - $old_x) / 2;
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$old_y = $old_x;
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}else{
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$off_w = 0;
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$off_h = 0;
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}
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//don't make the thumbnail larger
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if( ($old_x < $size) && ($old_y < $size ) ){
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$new_w = $new_h = max($old_x,$old_y);
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}
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$result = self::createImg($src_img, $dest_path, 0, 0, $off_w, $off_h, $new_w, $new_h, $old_x, $old_y, false, false, $source_path);
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@chmod($dest_path, gp_chmod_file);
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return $result;
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}
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/**
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* Create a rectangular image at $dest_path from an image at $source_path
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*
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* @param string $source_path location of the source image
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* @param string $dest_path location of the image to be created
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* @param int $new_w The width of the new image
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* @param int $new_h The height of the new image
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* @param boolean $keep_aspect_ratio Scale to fit / Crop to cover new size
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* @return bool
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*/
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static function CreateRect($source_path,$dest_path,$new_w=50,$new_h=50,$keep_aspect_ratio=false){
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global $config;
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$img_type = self::getType($source_path);
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if( strpos('svgz', $img_type) === 0 ){
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// image is SVG
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return self::CreateRectSVG($source_path,$dest_path,$new_w,$new_h,$keep_aspect_ratio);
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}
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$src_img = self::getSrcImg($source_path,$img_type);
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if( $src_img === false ){
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return false;
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}
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// Size
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$old_w = imagesx($src_img);
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$old_h = imagesy($src_img);
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// Ratios
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$old_aspect_ratio = $old_w / $old_h;
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$new_aspect_ratio = $new_w / $new_h;
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$off_w = 0;
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$off_h = 0;
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if( $keep_aspect_ratio ){
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// scale to fit into new width/height
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if( $old_aspect_ratio > $new_aspect_ratio ){
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// old img is wider than new one
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$new_h = (int)(round($new_h / $old_aspect_ratio * $new_aspect_ratio));
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}else{
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// old img is narrower than new one
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$new_w = (int)(round($new_w / $new_aspect_ratio * $old_aspect_ratio));
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}
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}else{
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// crop to cover new width/height
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if( $old_aspect_ratio > $new_aspect_ratio ){
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// old img is wider than new one
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$old_w_tmp = round($old_h * $new_aspect_ratio);
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$off_w = round(($old_w -$old_w_tmp) / 2);
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$old_w = $old_w_tmp;
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}else{
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// old img is narrower than new one
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$old_h_tmp = round($old_w / $new_aspect_ratio);
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$off_h = round(($old_h - $old_h_tmp) / 2);
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$old_h = $old_h_tmp;
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}
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}
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/* DEBUG */
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/*
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msg(
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basename($source_path) . ": <br/>"
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. "old_w=" . $old_w . " | old_h=" . $old_h . "<br/>"
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. "off_w=" . $off_w . " | off_h=" . $off_h . "<br/>"
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. "old_aspect_ratio=" . $old_aspect_ratio . "<br/>"
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. "new_aspect_ratio=" . $new_aspect_ratio . "<br/>"
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. "new_w=" . $new_w . " | new_h=" . $new_h . "<br/>"
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// . "<br/><br/>"
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);
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*/
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$result = self::createImg($src_img, $dest_path, 0, 0, $off_w, $off_h, $new_w, $new_h, $old_w, $old_h, false, false, $source_path);
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@chmod($dest_path, gp_chmod_file);
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return $result;
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}
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/**
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* SVG -- Create a rectangular SVG image at $dest_path from an SVG image at $source_path
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*
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* @param string $source_path location of the source SVG image
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* @param string $dest_path location of the SVG image to be created
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* @param int $size the dimension of the SVG image
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* @param string $type_file a string representing the type of the source file (svg, svgz)
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* @return bool
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*/
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static function CreateRectSVG($source_path, $dest_path, $width=50, $height=50, $keep_aspect_ratio){
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$src_svg = @file_get_contents($source_path);
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if( !$src_svg ){
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// msg($src_svg . "does not exist!");
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return false;
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}
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/*
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if( substr($src_svg,0,2) === hex2bin('1F8B') ){
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// gzip encoded svgz, decode it
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$src_svg = gzdecode($src_svg);
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}
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*/
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$internalErrors = libxml_use_internal_errors(true);
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$disableEntities = libxml_disable_entity_loader(true);
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libxml_clear_errors();
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$doc = new \DOMDocument();
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$doc->loadXML($src_svg, LIBXML_NONET);
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libxml_use_internal_errors($internalErrors);
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libxml_disable_entity_loader($disableEntities);
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if( $error = libxml_get_last_error() ){
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libxml_clear_errors();
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// msg("SVG processing - LibXML Error: " . $error->message );
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return false;
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}
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if( strtolower($doc->documentElement->tagName) !== 'svg'){
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// msg("SVG processing - Error: data stream is not an svg image");
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return false;
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}
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$svg = $doc->documentElement;
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// get size
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$svg_width = self::getPxVal($svg->getAttribute('width'));
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$svg_height = self::getPxVal($svg->getAttribute('height'));
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if( $svg->hasAttribute('viewBox') ){
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$viewBox = preg_split('/[\s,]+/', $svg->getAttribute('viewBox'));
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$vb_x = $viewBox[0];
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$vb_y = $viewBox[1];
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$vb_w = $viewBox[2];
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$vb_h = $viewBox[3];
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}
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if( (!$svg_width && !$svg_height) && (!$vb_w && !$vb_h) ){
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// msg("SVG processing - Error: width and height could not be determined");
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// return false;
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// no width/height provided -> we assume a 800 x 800px as default size
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$svg_width = 800;
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$svg_height = 800;
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}
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// msg("SVG file:" . basename($source_path) . " -- svg_width=".$svg_width." | svg_height=".$svg_height);
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if( !$svg->hasAttribute('viewBox') ){
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$svg->setAttribute('viewBox', '0 0 ' . $svg_width . ' ' . $svg_height);
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$vb_x = 0;
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$vb_y = 0;
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$vb_w = $svg_width;
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$vb_h = $svg_height;
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}
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$w = $vb_w - $vb_x;
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$h = $vb_h - $vb_y;
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// left/top offsets ### needs to be changed ###
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if( $w > $h ){
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$vb_x += ($w - $h) / 2;
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$vb_w -= ($w - $h);
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}else{
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$vb_y += ($h - $w) / 2;
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$vb_h -= ($h - $w);
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}
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$svg->setAttribute('viewBox', $vb_x . ' ' . $vb_y . ' ' . $vb_w . ' ' . $vb_h);
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$svg->setAttribute('width', $width);
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$svg->setAttribute('height', $height);
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return self::saveSVG($doc, $dest_path);
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}
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/**
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* Save SVG document to file
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*/
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static function saveSVG($doc, $path){
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global $langmessage;
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$svg_xml = $doc->saveXML();
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$result = file_put_contents($path, $svg_xml);
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if( $result ){
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@chmod($path, gp_chmod_file);
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return true;
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}
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// msg($langmessage['OOPS'] . ': Unable to save SVG to ' . $path);
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return false;
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}
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/**
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* Return pixel value from value+units
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*/
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static function getPxVal($size) {
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$map = array('px'=>1, 'pt'=>1.3333333, 'mm'=>3.7795276, 'ex'=>8, 'em'=>16, 'pc'=>16, 'cm'=>37.795276, 'in'=>96);
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$size = trim($size);
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$value = substr($size, 0, -2);
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$unit = substr($size, -2);
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if( isset($map[$unit]) && is_numeric($value) ){
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$size = $value * $map[$unit];
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}
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if( is_numeric($size) ){
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return (int) round($size);
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}
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return 0;
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}
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/**
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* Return a type file type of a given file given by it's $path on the file system
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* @static
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*/
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static function getType($path){
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$nameParts = explode('.',$path);
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$type = array_pop($nameParts);
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return strtolower($type);
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}
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/**
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* Attempt to increase php's memory limit using the current memory used and the post_max_size value
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* Generally speaking, memory_limit should be larger than post_max_size http://php.net/manual/en/ini.core.php
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* @static
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*/
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static function AdjustMemoryLimit(){
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//get memory limit in bytes
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$limit = @ini_get('memory_limit') or '8M';
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$limit = \gp\tool::getByteValue($limit);
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//get memory usage or use a default value
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if( function_exists('memory_get_usage') ){
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$memoryUsed = memory_get_usage();
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}else{
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$memoryUsed = 3*1048576; //sizable buffer 3MB
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}
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//since imageHeight and imageWidth aren't always available
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//use post_max_size to figure maximum memory limit
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$max_post = @ini_get('post_max_size') or '8M'; //defaults to 8M
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$max_post = \gp\tool::getByteValue($max_post);
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$needed = $max_post + $memoryUsed;
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if( $limit < $needed ){
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@ini_set( 'memory_limit', $needed);
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}
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}
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/**
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* @deprecated 4.3
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*/
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static function getByteValue($value){}
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/**
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* Using the given $source_path of an image, return the GD image if possible
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* @param string $source_path The path of the source image
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* @param string $type_file The file type of the source image
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* @return mixed GD image if successful, false otherwise
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*/
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static function getSrcImg($source_path,$type_file=false){
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if( !function_exists('imagetypes') ){
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return false;
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}
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self::AdjustMemoryLimit();
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if( $type_file !== false ){
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$img_type = self::getType($type_file);
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}else{
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$img_type = self::getType($source_path);
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}
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$supported_types = imagetypes();
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//start
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switch($img_type){
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case 'jpg':
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case 'jpeg':
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if( $supported_types & IMG_JPG ){
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return imagecreatefromjpeg($source_path);
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}
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break;
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case 'gif':
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return imagecreatefromgif($source_path);
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break;
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case 'png':
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if( $supported_types & IMG_PNG) {
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return imagecreatefrompng($source_path);
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}
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break;
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case 'bmp';
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if( $supported_types & IMG_WBMP) {
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return imagecreatefromwbmp($source_path);
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}
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break;
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}
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//msg('not supported for thumbnail: '.$img_type);
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return false;
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}
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/**
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* Save the GD image ($src_img) to the desired location ($dest_path) with the sizing arguments
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*
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* $src_path is required for ICC/meta data
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* The method will still work w/o it but will not retain ICC/meta data (for possible plugin calls)
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*
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*/
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static function createImg($src_img, $dest_path, $dst_x, $dst_y, $off_w, $off_h, $dst_w, $dst_h, $old_x, $old_y, $new_w = false, $new_h = false, $src_path = false){
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global $config;
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$preserve_icc_profiles = false;
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$preserve_image_metadata = false;
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if( $src_path ){
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$img_type = self::getType($src_path);
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$dest_type = self::getType($dest_path);
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if( ($img_type == 'jpg' || $img_type == 'jpeg') && ($dest_type == 'jpg' || $dest_type == 'jpeg') ){
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$preserve_icc_profiles = !empty($config['preserve_icc_profiles']);
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$preserve_image_metadata = !empty($config['preserve_image_metadata']);
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if( $preserve_icc_profiles ){
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$jpeg_icc = new \JPEG_ICC();
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$has_icc = $jpeg_icc->LoadFromJPEG($src_path);
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if( !$has_icc ){
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$preserve_icc_profiles = false;
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unset($jpeg_icc);
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}
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}
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if( $preserve_image_metadata ){
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$image_meta = \gp\tool\ImageMeta::getMeta($src_path);
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/* FOR DEBUGGING - write a text file with acquired metadata and/or possible errors to the source directory */
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/*
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$pi = pathinfo($src_path);
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$debug_metadata_file = $pi['dirname'] . '/' . $pi['filename'] . '_meta.txt';
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$debug_metadata = 'Metadata for image file "' . basename($src_path) . '"' . "\n\n";
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foreach( $image_meta as $mk => $mv ){
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if( is_array($mv) ){
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$debug_metadata .= $mk . ' : ' . "\n";
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foreach( $md as $errk => $errd ){
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$debug_metadata .= ' ' . $errk . ' : ' . $errv . "\n";
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}
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}else{
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$debug_metadata .= $mk . ' : ' . $mv . "\n";
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}
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}
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\gp\tool\Files::Save($debug_metadata_file, $debug_metadata);
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*/
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}
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}
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}
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if( !$new_w ){
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$new_w = $dst_w;
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}
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if( !$new_h ){
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$new_h = $dst_h;
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}
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$dst_img = imagecreatetruecolor($new_w, $new_h);
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if( !$dst_img ){
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trigger_error('dst_img not created');
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return false;
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}
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$img_type = self::getType($dest_path);
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// allow gif & png to have transparent background
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switch($img_type){
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case 'gif':
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case 'png':
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$dst_img = self::Transparency($dst_img);
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break;
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}
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if( !imagecopyresampled($dst_img, $src_img, $dst_x, $dst_y, $off_w, $off_h, $dst_w, $dst_h, $old_x, $old_y) ){
|
|
trigger_error('copyresample failed');
|
|
imagedestroy($dst_img);
|
|
imagedestroy($src_img);
|
|
if( $preserve_icc_profiles ){
|
|
unset($jpeg_icc);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
imagedestroy($src_img);
|
|
|
|
$saved = self::SrcToImage($dst_img,$dest_path,$img_type);
|
|
|
|
if( $preserve_image_metadata ){
|
|
$iptc_embedded = \gp\tool\ImageMeta::saveMeta($dest_path, $image_meta);
|
|
}
|
|
|
|
if( $preserve_icc_profiles ){
|
|
$jpeg_icc->SaveToJPEG($dest_path);
|
|
unset($jpeg_icc);
|
|
}
|
|
|
|
return $saved;
|
|
}
|
|
|
|
|
|
static function Transparency($image){
|
|
if( function_exists('imagesavealpha') ){
|
|
imagesavealpha($image,true);
|
|
$bgcolor = imagecolorallocatealpha($image, 133, 134, 135, 127);
|
|
imagefill($image, 0, 0, $bgcolor);
|
|
}
|
|
return $image;
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Output image to path based on type
|
|
* will already have checked for support via the getSrcImg function
|
|
*
|
|
*/
|
|
static function SrcToImage($src,$path,$type){
|
|
$result = false;
|
|
switch($type){
|
|
case 'jpeg':
|
|
case 'jpg':
|
|
$result = imagejpeg($src,$path,90);
|
|
break;
|
|
case 'gif':
|
|
$result = imagegif($src,$path);
|
|
break;
|
|
case 'png':
|
|
$result = imagepng($src,$path,9,PNG_ALL_FILTERS);
|
|
break;
|
|
case 'bmp':
|
|
$result = imagewbmp($src,$path);
|
|
break;
|
|
}
|
|
|
|
if( $result === false ){
|
|
@imagedestroy($src);
|
|
return false;
|
|
}
|
|
|
|
@chmod($path, gp_chmod_file);
|
|
|
|
imagedestroy($src);
|
|
return true;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
namespace{
|
|
class thumbnail extends \gp\tool\Image{}
|
|
}
|