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<?php
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namespace XoopsModules\Wggithub\Common;
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/*
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You may not change or alter any portion of this comment or credits
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of supporting developers from this source code or any supporting source code
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which is considered copyrighted (c) material of the original comment or credit authors.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/**
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* Image resizer class for xoops
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*
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* @copyright module for xoops
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* @license GPL 2.0 or later
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* @package XOOPS common
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* @since 1.0
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* @min_xoops 2.5.9
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* @author Goffy - Wedega - Email:<[email protected]> - Website:<https://wedega.com>
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* @version $Id: 1.0 Resizer.php 1 Mon 2019-02-09 10:04:49Z XOOPS Project (www.xoops.org) $
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*/
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class Resizer
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{
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public $sourceFile = '';
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public $endFile = '';
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public $maxWidth = 0;
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public $maxHeight = 0;
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public $imageMimetype = '';
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public $jpgQuality = 90;
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public $mergeType = 0;
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public $mergePos = 0;
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public $degrees = 0;
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public $error = '';
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/**
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* resize image if size exceed given width/height
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* @return string|bool
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*/
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public function resizeImage()
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{
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// check file extension
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switch ($this->imageMimetype) {
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case 'image/png':
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$img = \imagecreatefrompng($this->sourceFile);
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break;
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case 'image/jpeg':
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$img = \imagecreatefromjpeg($this->sourceFile);
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if (!$img) {
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$img = \imagecreatefromstring(\file_get_contents($this->sourceFile));
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}
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break;
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case 'image/gif':
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$img = \imagecreatefromgif($this->sourceFile);
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break;
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default:
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return 'Unsupported format';
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}
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$width = \imagesx($img);
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$height = \imagesy($img);
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if ($width > $this->maxWidth || $height > $this->maxHeight) {
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// recalc image size based on this->maxWidth/this->maxHeight
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$new_width = 0;
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$new_height = 0;
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if ($width > $height) {
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if ($width < $this->maxWidth) {
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$new_width = $width;
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} else {
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$new_width = $this->maxWidth;
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$divisor = $width / $new_width;
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$new_height = \floor($height / $divisor);
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}
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} elseif ($height < $this->maxHeight) {
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$new_height = $height;
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} else {
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$new_height = $this->maxHeight;
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$divisor = $height / $new_height;
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$new_width = \floor($width / $divisor);
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}
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// Create a new temporary image.
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$tmpimg = \imagecreatetruecolor($new_width, $new_height);
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\imagealphablending($tmpimg, false);
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\imagesavealpha($tmpimg, true);
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// Copy and resize old image into new image.
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\imagecopyresampled($tmpimg, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
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\unlink($this->endFile);
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//compressing the file
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switch ($this->imageMimetype) {
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case 'image/png':
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\imagepng($tmpimg, $this->endFile, 0);
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break;
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case 'image/jpeg':
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\imagejpeg($tmpimg, $this->endFile, 100);
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break;
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case 'image/gif':
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\imagegif($tmpimg, $this->endFile);
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break;
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}
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// release the memory
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\imagedestroy($tmpimg);
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} else {
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return 'copy';
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}
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\imagedestroy($img);
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return true;
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}
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/**
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* @return bool|string
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*/
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public function resizeAndCrop()
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{
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// check file extension
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switch ($this->imageMimetype) {
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case 'image/png':
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$original = \imagecreatefrompng($this->sourceFile);
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break;
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case 'image/jpeg':
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$original = \imagecreatefromjpeg($this->sourceFile);
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break;
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case 'image/gif':
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$original = \imagecreatefromgif($this->sourceFile);
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break;
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default:
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return 'Unsupported format';
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}
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if (!$original) {
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return false;
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}
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// GET ORIGINAL IMAGE DIMENSIONS
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[$original_w, $original_h] = \getimagesize($this->sourceFile);
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// RESIZE IMAGE AND PRESERVE PROPORTIONS
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$max_width_resize = $this->maxWidth;
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$max_height_resize = $this->maxHeight;
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if ($original_w > $original_h) {
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$max_height_ratio = $this->maxHeight / $original_h;
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$max_width_resize = (int)\round($original_w * $max_height_ratio);
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} else {
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$max_width_ratio = $this->maxWidth / $original_w;
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$max_height_resize = (int)\round($original_h * $max_width_ratio);
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}
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if ($max_width_resize < $this->maxWidth) {
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$max_height_ratio = $this->maxWidth / $max_width_resize;
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$max_height_resize = (int)\round($this->maxHeight * $max_height_ratio);
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$max_width_resize = $this->maxWidth;
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}
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// CREATE THE PROPORTIONAL IMAGE RESOURCE
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$thumb = \imagecreatetruecolor($max_width_resize, $max_height_resize);
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if (!\imagecopyresampled($thumb, $original, 0, 0, 0, 0, $max_width_resize, $max_height_resize, $original_w, $original_h)) {
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return false;
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}
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// CREATE THE CENTERED CROPPED IMAGE TO THE SPECIFIED DIMENSIONS
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$final = \imagecreatetruecolor($this->maxWidth, $this->maxHeight);
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$max_width_offset = 0;
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$max_height_offset = 0;
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if ($this->maxWidth < $max_width_resize) {
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$max_width_offset = (int)\round(($max_width_resize - $this->maxWidth) / 2);
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} else {
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$max_height_offset = (int)\round(($max_height_resize - $this->maxHeight) / 2);
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}
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if (!imagecopy($final, $thumb, 0, 0, $max_width_offset, $max_height_offset, $max_width_resize, $max_height_resize)) {
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return false;
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}
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// STORE THE FINAL IMAGE - WILL OVERWRITE $this->endFile
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if (!\imagejpeg($final, $this->endFile, $this->jpgQuality)) {
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return false;
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}
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return true;
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}
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public function mergeImage()
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{
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$dest = \imagecreatefromjpeg($this->endFile);
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$src = \imagecreatefromjpeg($this->sourceFile);
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if (4 == $this->mergeType) {
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$imgWidth = (int)\round($this->maxWidth / 2 - 1);
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$imgHeight = (int)\round($this->maxHeight / 2 - 1);
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$posCol2 = (int)\round($this->maxWidth / 2 + 1);
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$posRow2 = (int)\round($this->maxHeight / 2 + 1);
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switch ($this->mergePos) {
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case 1:
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imagecopy($dest, $src, 0, 0, 0, 0, $imgWidth, $imgHeight); //top left
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break;
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case 2:
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imagecopy($dest, $src, $posCol2, 0, 0, 0, $imgWidth, $imgHeight); //top right
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break;
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case 3:
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imagecopy($dest, $src, 0, $posRow2, 0, 0, $imgWidth, $imgHeight); //bottom left
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break;
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case 4:
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imagecopy($dest, $src, $posCol2, $posRow2, 0, 0, $imgWidth, $imgHeight); //bottom right
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break;
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}
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}
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if (6 == $this->mergeType) {
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$imgWidth = (int)\round($this->maxWidth / 3 - 1);
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$imgHeight = (int)\round($this->maxHeight / 2 - 1);
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$posCol2 = (int)\round($this->maxWidth / 3 + 1);
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$posCol3 = $posCol2 + (int)\round($this->maxWidth / 3 + 1);
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$posRow2 = (int)\round($this->maxHeight / 2 + 1);
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218
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switch ($this->mergePos) {
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case 1:
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imagecopy($dest, $src, 0, 0, 0, 0, $imgWidth, $imgHeight); //top left
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break;
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case 2:
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imagecopy($dest, $src, $posCol2, 0, 0, 0, $imgWidth, $imgHeight); //top center
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break;
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case 3:
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imagecopy($dest, $src, $posCol3, 0, 0, 0, $imgWidth, $imgHeight); //top right
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break;
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case 4:
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imagecopy($dest, $src, 0, $posRow2, 0, 0, $imgWidth, $imgHeight); //bottom left
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break;
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case 5:
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232
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imagecopy($dest, $src, $posCol2, $posRow2, 0, 0, $imgWidth, $imgHeight); //bottom center
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break;
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case 6:
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imagecopy($dest, $src, $posCol3, $posRow2, 0, 0, $imgWidth, $imgHeight); //bottom right
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break;
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237
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}
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238
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}
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\imagejpeg($dest, $this->endFile);
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240
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241
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\imagedestroy($src);
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\imagedestroy($dest);
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243
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}
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244
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245
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/**
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246
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* @return bool|string
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247
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*/
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248
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public function rotateImage()
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249
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{
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250
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// check file extension
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251
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switch ($this->imageMimetype) {
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252
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case 'image/png':
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253
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$original = \imagecreatefrompng($this->sourceFile);
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254
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break;
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255
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case 'image/jpeg':
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256
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$original = \imagecreatefromjpeg($this->sourceFile);
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257
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break;
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258
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case 'image/gif':
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259
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$original = \imagecreatefromgif($this->sourceFile);
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260
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break;
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261
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default:
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262
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return 'Unsupported format';
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263
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}
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264
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265
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if (!$original) {
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266
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return false;
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267
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}
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268
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// Rotate
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269
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$tmpimg = \imagerotate($original, $this->degrees, 0);
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270
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271
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\unlink($this->endFile);
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272
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//compressing the file
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273
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switch ($this->imageMimetype) {
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274
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case 'image/png':
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275
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if (!\imagepng($tmpimg, $this->endFile, 0)) {
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276
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return false;
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277
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}
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278
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break;
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279
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case 'image/jpeg':
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280
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if (!\imagejpeg($tmpimg, $this->endFile, $this->jpgQuality)) {
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281
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return false;
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282
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}
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283
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break;
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284
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case 'image/gif':
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285
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if (!\imagegif($tmpimg, $this->endFile)) {
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286
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return false;
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287
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}
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288
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break;
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289
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}
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290
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291
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|
|
// release the memory
|
|
292
|
|
|
\imagedestroy($tmpimg);
|
|
293
|
|
|
|
|
294
|
|
|
return true;
|
|
295
|
|
|
}
|
|
296
|
|
|
}
|
|
297
|
|
|
|
ggoffy /
wggithub
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