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<?php /** This file is part of KCFinder project * * @desc GD image driver class * @package KCFinder * @version 3.12 * @author Pavel Tzonkov <sunhater@sunhater.com> * @copyright 2010-2014 KCFinder Project * @license http://opensource.org/licenses/GPL-3.0 GPLv3 * @license http://opensource.org/licenses/LGPL-3.0 LGPLv3 * @link http://kcfinder.sunhater.com */ namespace kcfinder; class image_gd extends image { // ABSTRACT PUBLIC METHODS public function resize($width, $height) { if (!$width) $width = 1; if (!$height) $height = 1; return ( (false !== ($img = new image_gd(array($width, $height)))) && $img->imageCopyResampled($this) && (false !== ($this->image = $img->image)) && (false !== ($this->width = $img->width)) && (false !== ($this->height = $img->height)) ); } public function resizeFit($width, $height, $background=false) { if ((!$width && !$height) || (($width == $this->width) && ($height == $this->height))) return true; if (!$width || (($height / $width) < ($this->height / $this->width))) { $h = $height; $w = round(($this->width * $h) / $this->height); } elseif (!$height || (($width / $height) < ($this->width / $this->height))) { $w = $width; $h = round(($this->height * $w) / $this->width); } else { $w = $width; $h = $height; } if (!$w) $w = 1; if (!$h) $h = 1; if ($background === false) return $this->resize($w, $h); else { $img = new image_gd(array($width, $height)); $x = round(($width - $w) / 2); $y = round(($height - $h) / 2); if ((false === $this->resize($w, $h)) || (false === $img->imageFilledRectangle(0, 0, $width, $height, $background)) || (false === $img->imageCopyResampled($this->image, $x, $y, 0, 0, $w, $h)) ) return false; $this->image = $img->image; $this->width = $width; $this->height = $height; return true; } } public function resizeCrop($width, $height, $offset=false) { if (($this->width / $this->height) > ($width / $height)) { $h = $height; $w = ($this->width * $h) / $this->height; $y = 0; if ($offset !== false) { if ($offset > 0) $offset = -$offset; if (($w + $offset) <= $width) $offset = $width - $w; $x = $offset; } else $x = ($width - $w) / 2; } else { $w = $width; $h = ($this->height * $w) / $this->width; $x = 0; if ($offset !== false) { if ($offset > 0) $offset = -$offset; if (($h + $offset) <= $height) $offset = $height - $h; $y = $offset; } else $y = ($height - $h) / 2; } $x = round($x); $y = round($y); $w = round($w); $h = round($h); if (!$w) $w = 1; if (!$h) $h = 1; $return = ( (false !== ($img = new image_gd(array($width, $height))))) && (false !== ($img->imageCopyResampled($this->image, $x, $y, 0, 0, $w, $h)) ); if ($return) { $this->image = $img->image; $this->width = $w; $this->height = $h; } return $return; } public function rotate($angle, $background="#000000") { $angle = -$angle; $img = @imagerotate($this->image, $angle, $this->gdColor($background)); if ($img === false) return false; $this->width = imagesx($img); $this->height = imagesy($img); $this->image = $img; return true; } public function flipHorizontal() { $img = imagecreatetruecolor($this->width, $this->height); if (imagecopyresampled($img, $this->image, 0, 0, ($this->width - 1), 0, $this->width, $this->height, -$this->width, $this->height)) $this->image = $img; else return false; return true; } public function flipVertical() { $img = imagecreatetruecolor($this->width, $this->height); if (imagecopyresampled($img, $this->image, 0, 0, 0, ($this->height - 1), $this->width, $this->height, $this->width, -$this->height)) $this->image = $img; else return false; return true; } public function watermark($file, $left=false, $top=false) { $info = getimagesize($file); list($w, $h, $t) = $info; if (!in_array($t, array(IMAGETYPE_PNG, IMAGETYPE_GIF))) return false; $imagecreate = ($t == IMAGETYPE_PNG) ? "imagecreatefrompng" : "imagecreatefromgif"; if (!@imagealphablending($this->image, true) || (false === ($wm = @$imagecreate($file))) ) return false; $w = imagesx($wm); $h = imagesy($wm); $x = ($left === true) ? 0 : ( ($left === null) ? round(($this->width - $w) / 2) : ( (($left === false) || !preg_match('/^\d+$/', $left)) ? ($this->width - $w) : $left)); $y = ($top === true) ? 0 : ( ($top === null) ? round(($this->height - $h) / 2) : ( (($top === false) || !preg_match('/^\d+$/', $top)) ? ($this->height - $h) : $top)); if ((($x + $w) > $this->width) || (($y + $h) > $this->height) || ($x < 0) || ($y < 0) ) return false; if (($wm === false) || !@imagecopy($this->image, $wm, $x, $y, 0, 0, $w, $h)) return false; @imagealphablending($this->image, false); @imagesavealpha($this->image, true); return true; } public function output($type='jpeg', array $options=array()) { $method = "output_$type"; if (!method_exists($this, $method)) return false; return $this->$method($options); } // ABSTRACT PROTECTED METHODS protected function getBlankImage($width, $height) { $image = imagecreatetruecolor($width, $height); imagealphablending($image, false); imagesavealpha($image, true); return $image; } protected function getImage($image, &$width, &$height) { if (is_resource($image) && (get_resource_type($image) == "gd")) { $width = @imagesx($image); $height = @imagesy($image); imagealphablending($image, false); imagesavealpha($image, true); return $image; } elseif (is_string($image) && (false !== (list($width, $height, $t) = @getimagesize($image))) ) { $image = ($t == IMAGETYPE_GIF) ? @imagecreatefromgif($image) : ( ($t == IMAGETYPE_WBMP) ? @imagecreatefromwbmp($image) : ( ($t == IMAGETYPE_JPEG) ? @imagecreatefromjpeg($image) : ( ($t == IMAGETYPE_PNG) ? @imagecreatefrompng($image) : ( ($t == IMAGETYPE_XBM) ? @imagecreatefromxbm($image) : false )))); if ($t == IMAGETYPE_PNG) { imagealphablending($image, false); imagesavealpha($image, true); } return $image; } else return false; } // PSEUDO-ABSTRACT STATIC METHODS static function available() { return function_exists("imagecreatefromjpeg"); } static function checkImage($file) { if (!is_string($file) || ((false === (list($width, $height, $t) = @getimagesize($file)))) ) return false; $img = ($t == IMAGETYPE_GIF) ? @imagecreatefromgif($file) : ( ($t == IMAGETYPE_WBMP) ? @imagecreatefromwbmp($file) : ( ($t == IMAGETYPE_JPEG) ? @imagecreatefromjpeg($file) : ( ($t == IMAGETYPE_PNG) ? @imagecreatefrompng($file) : ( ($t == IMAGETYPE_XBM) ? @imagecreatefromxbm($file) : false )))); return ($img !== false); } // OWN METHODS protected function output_png(array $options=array()) { $file = isset($options['file']) ? $options['file'] : null; $quality = isset($options['quality']) ? $options['quality'] : null; $filters = isset($options['filters']) ? $options['filters'] : null; if (($file === null) && !headers_sent()) header("Content-Type: image/png"); return imagepng($this->image, $file, $quality, $filters); } protected function output_jpeg(array $options=array()) { $file = isset($options['file']) ? $options['file'] : null; $quality = isset($options['quality']) ? $options['quality'] : self::DEFAULT_JPEG_QUALITY; if (($file === null) && !headers_sent()) header("Content-Type: image/jpeg"); return imagejpeg($this->image, $file, $quality); } protected function output_gif(array $options=array()) { $file = isset($options['file']) ? $options['file'] : null; if (isset($options['file']) && !headers_sent()) header("Content-Type: image/gif"); return imagegif($this->image, $file); } protected function gdColor() { $args = func_get_args(); $exprRGB = '/^rgb\(\s*(\d{1,3})\s*\,\s*(\d{1,3})\s*\,\s*(\d{1,3})\s*\)$/i'; $exprHex1 = '/^\#?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i'; $exprHex2 = '/^\#?([0-9a-f])([0-9a-f])([0-9a-f])$/i'; $exprByte = '/^([01]?\d?\d|2[0-4]\d|25[0-5])$/'; if (!isset($args[0])) return false; if (count($args[0]) == 3) { list($r, $g, $b) = $args[0]; } elseif (preg_match($exprRGB, $args[0], $match)) { list($tmp, $r, $g, $b) = $match; } elseif (preg_match($exprHex1, $args[0], $match)) { list($tmp, $r, $g, $b) = $match; $r = hexdec($r); $g = hexdec($g); $b = hexdec($b); } elseif (preg_match($exprHex2, $args[0], $match)) { list($tmp, $r, $g, $b) = $match; $r = hexdec("$r$r"); $g = hexdec("$g$g"); $b = hexdec("$b$b"); } elseif ((count($args) == 3) && preg_match($exprByte, $args[0]) && preg_match($exprByte, $args[1]) && preg_match($exprByte, $args[2]) ) { list($r, $g, $b) = $args; } else return false; return imagecolorallocate($this->image, $r, $g, $b); } protected function imageFilledRectangle($x1, $y1, $x2, $y2, $color) { $color = $this->gdColor($color); if ($color === false) return false; return imageFilledRectangle($this->image, $x1, $y1, $x2, $y2, $color); } protected function imageCopyResampled( $src, $dstX=0, $dstY=0, $srcX=0, $srcY=0, $dstW=null, $dstH=null, $srcW=null, $srcH=null ) { $imageDetails = $this->buildImage($src); if ($imageDetails === false) return false; list($src, $srcWidth, $srcHeight) = $imageDetails; if (is_null($dstW)) $dstW = $this->width - $dstW; if (is_null($dstH)) $dstH = $this->height - $dstY; if (is_null($srcW)) $srcW = $srcWidth - $srcX; if (is_null($srcH)) $srcH = $srcHeight - $srcY; return imageCopyResampled($this->image, $src, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH); } }
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