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<?php |
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namespace XoopsModules\Modulebuilder\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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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, $imgHeight); //bottom left |
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break; |
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case 5: |
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\imagecopy($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, $imgHeight); //bottom right |
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break; |
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} |
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} |
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\imagejpeg($dest, $this->endFile); |
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\imagedestroy($src); |
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\imagedestroy($dest); |
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} |
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/** |
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* @return bool|string |
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*/ |
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public function rotateImage() |
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{ |
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// check file extension |
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switch ($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 (!$original) { |
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return false; |
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} |
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// Rotate |
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$tmpimg = \imagerotate($original, $this->degrees, 0); |
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\unlink($this->endFile); |
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//compressing the file |
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switch ($this->imageMimetype) { |
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case 'image/png': |
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if (!\imagepng($tmpimg, $this->endFile, 0)) { |
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return false; |
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} |
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break; |
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case 'image/jpeg': |
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if (!\imagejpeg($tmpimg, $this->endFile, $this->jpgQuality)) { |
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return false; |
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} |
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break; |
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case 'image/gif': |
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if (!\imagegif($tmpimg, $this->endFile)) { |
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return false; |
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} |
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break; |
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} |
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// release the memory |
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\imagedestroy($tmpimg); |
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return true; |
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} |
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} |
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