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本文实例讲述了摘自织梦CMS中的图片处理类。分享给大家供大家参考。具体如下:
<?php if(!defined("DEDEINC")) exit("dedecms");/** * 图像处理类 * * @version$Id: image.class.php 1 18:10 2010年7月5日Z tianya $ * @packageDedeCMS.Libraries * @copyrightCopyright (c) 2007 - 2010, DesDev, Inc. * @licensehttp://help.dedecms.com/usersguide/license.html * @link http://www.dedecms.com */class image{ var $attachinfo; var $targetfile; //图片路径 var $imagecreatefromfunc; var $imagefunc; var $attach; var $animatedgif; var $watermarkquality; var $watermarktext; var $thumbstatus; var $watermarkstatus; // 析构函数,兼容PHP4 function image($targetfile, $cfg_thumb, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $cfg_watermarktype, $photo_marktrans,$trueMarkimg, $attach = array()) {$this->__construct($targetfile, $cfg_thumb, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $cfg_watermarktype, $photo_marktrans,$trueMarkimg, $attach); } // 析构函数 function __construct($targetfile, $cfg_thumb, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $cfg_watermarktype, $photo_marktrans,$trueMarkimg, $attach = array()) {$this->thumbstatus = $cfg_thumb;$this->watermarktext = $cfg_watermarktext;$this->watermarkstatus = $photo_waterpos;$this->watermarkquality = $photo_marktrans;$this->watermarkminwidth = $photo_wwidth;$this->watermarkminheight = $photo_wheight;$this->watermarktype = $cfg_watermarktype;$this->watermarktrans = $photo_diaphaneity;$this->animatedgif = 0;$this->targetfile = $targetfile;$this->attachinfo = @getimagesize($targetfile);$this->attach = $attach;switch($this->attachinfo["mime"]){ case "image/jpeg":$this->imagecreatefromfunc = function_exists("imagecreatefromjpeg") ? "imagecreatefromjpeg" : "";$this->imagefunc = function_exists("imagejpeg") ? "imagejpeg" : "";break; case "image/gif":$this->imagecreatefromfunc = function_exists("imagecreatefromgif") ? "imagecreatefromgif" : "";$this->imagefunc = function_exists("imagegif") ? "imagegif" : "";break; case "image/png":$this->imagecreatefromfunc = function_exists("imagecreatefrompng") ? "imagecreatefrompng" : "";$this->imagefunc = function_exists("imagepng") ? "imagepng" : "";break;}//为空则匹配类型的函数不存在$this->attach["size"] = empty($this->attach["size"]) ? @filesize($targetfile) : $this->attach["size"];if($this->attachinfo["mime"] == "image/gif"){ $fp = fopen($targetfile, "rb"); $targetfilecontent = fread($fp, $this->attach["size"]); fclose($fp); $this->animatedgif = strpos($targetfilecontent, "NETSCAPE2.0") === false ? 0 : 1;} } /*** 生成缩略图** @access public* @paramint $thumbwidth 图片宽度* @paramint $thumbheight 图片高度* @paramint $preview 是否预览* @return void*/ function thumb($thumbwidth, $thumbheight, $preview = 0) {$this->thumb_gd($thumbwidth, $thumbheight, $preview); if($this->thumbstatus == 2 && $this->watermarkstatus){ $this->image($this->targetfile, $this->attach); $this->attach["size"] = filesize($this->targetfile);} } /*** 图片水印** @access public* @paramint $preview 是否预览* @return void*/ function watermark($preview = 0) {if($this->watermarkminwidth && $this->attachinfo[0] <= $this->watermarkminwidth && $this->watermarkminheight && $this->attachinfo[1] <= $this->watermarkminheight){ return ;}$this->watermark_gd($preview); } /*** 使用gd生成缩略图** @access public* @paramint $thumbwidth 图片宽度* @paramint $thumbheight 图片高度* @paramint $preview 是否预览* @return void*/ function thumb_gd($thumbwidth, $thumbheight, $preview = 0) {if($this->thumbstatus && function_exists("imagecreatetruecolor") && function_exists("imagecopyresampled") && function_exists("imagejpeg")){ $imagecreatefromfunc = $this->imagecreatefromfunc; $imagefunc = $this->thumbstatus == 1 ? "imagejpeg" : $this->imagefunc; list($imagewidth, $imageheight) = $this->attachinfo; if(!$this->animatedgif && ($imagewidth >= $thumbwidth || $imageheight >= $thumbheight)) {$attach_photo = $imagecreatefromfunc($this->targetfile);$x_ratio = $thumbwidth / $imagewidth;$y_ratio = $thumbheight / $imageheight;if(($x_ratio * $imageheight) < $thumbheight){ $thumb["height"] = ceil($x_ratio * $imageheight); $thumb["width"] = $thumbwidth;}else{ $thumb["width"] = ceil($y_ratio * $imagewidth); $thumb["height"] = $thumbheight;}$targetfile = !$preview ? ($this->thumbstatus == 1 ? $this->targetfile.".thumb.jpg" : $this->targetfile) : "./watermark_tmp.jpg";$thumb_photo = imagecreatetruecolor($thumb["width"], $thumb["height"]);imagecopyresampled($thumb_photo, $attach_photo, 0, 0, 0, 0, $thumb["width"], $thumb["height"], $imagewidth, $imageheight);if($this->attachinfo["mime"] == "image/jpeg"){ $imagefunc($thumb_photo, $targetfile, 100);}else{ $imagefunc($thumb_photo, $targetfile);}$this->attach["thumb"] = $this->thumbstatus == 1 ? 1 : 0; }} } /*** 使用gd进行水印** @access public* @paramint $preview 是否预览* @return void*/ function watermark_gd($preview = 0) {if($this->watermarkstatus && function_exists("imagecopy") && function_exists("imagealphablending") && function_exists("imagecopymerge")){ $imagecreatefunc = $this->imagecreatefromfunc; $imagefunc = $this->imagefunc; list($imagewidth, $imageheight) = $this->attachinfo; if($this->watermarktype < 2) {$watermark_file = $this->watermarktype == 1 ? DEDEDATA."/mark/mark.png" : DEDEDATA."/mark/mark.gif";$watermarkinfo = @getimagesize($watermark_file);$watermark_logo = $this->watermarktype == 1 ? @imagecreatefrompng($watermark_file) : @imagecreatefromgif($watermark_file);if(!$watermark_logo){ return ;}list($logowidth, $logoheight) = $watermarkinfo; } else {$box = @imagettfbbox($this->watermarktext["size"], $this->watermarktext["angle"], $this->watermarktext["fontpath"],$this->watermarktext["text"]);$logowidth = max($box[2], $box[4]) - min($box[0], $box[6]);$logoheight = max($box[1], $box[3]) - min($box[5], $box[7]);$ax = min($box[0], $box[6]) * -1;$ay = min($box[5], $box[7]) * -1; } $wmwidth = $imagewidth - $logowidth; $wmheight = $imageheight - $logoheight; if(($this->watermarktype < 2 && is_readable($watermark_file) || $this->watermarktype == 2) && $wmwidth > 10 && $wmheight > 10 && !$this->animatedgif) {switch($this->watermarkstatus){ case 1: $x = +5;$y = +5;break; case 2:$x = ($imagewidth - $logowidth) / 2;$y = +5;break; case 3:$x = $imagewidth - $logowidth - 5;$y = +5;break; case 4:$x = +5;$y = ($imageheight - $logoheight) / 2;break; case 5:$x = ($imagewidth - $logowidth) / 2;$y = ($imageheight - $logoheight) / 2;break; case 6:$x = $imagewidth - $logowidth - 5;$y = ($imageheight - $logoheight) / 2;break; case 7:$x = +5;$y = $imageheight - $logoheight - 5;break; case 8:$x = ($imagewidth - $logowidth) / 2;$y = $imageheight - $logoheight - 5;break; case 9:$x = $imagewidth - $logowidth - 5;$y = $imageheight - $logoheight -5;break;}$dst_photo = @imagecreatetruecolor($imagewidth, $imageheight);$target_photo = $imagecreatefunc($this->targetfile);imagecopy($dst_photo, $target_photo, 0, 0, 0, 0, $imagewidth, $imageheight);if($this->watermarktype == 1){ imagecopy($dst_photo, $watermark_logo, $x, $y, 0, 0, $logowidth, $logoheight);}elseif($this->watermarktype == 2){ if(($this->watermarktext["shadowx"] || $this->watermarktext["shadowy"]) && $this->watermarktext["shadowcolor"]) {$shadowcolorrgb = explode(",", $this->watermarktext["shadowcolor"]);$shadowcolor = imagecolorallocate($dst_photo, $shadowcolorrgb[0], $shadowcolorrgb[1], $shadowcolorrgb[2]);imagettftext($dst_photo, $this->watermarktext["size"], $this->watermarktext["angle"],$x + $ax + $this->watermarktext["shadowx"], $y + $ay + $this->watermarktext["shadowy"], $shadowcolor,$this->watermarktext["fontpath"], $this->watermarktext["text"]); } $colorrgb = explode(",", $this->watermarktext["color"]); $color = imagecolorallocate($dst_photo, $colorrgb[0], $colorrgb[1], $colorrgb[2]); imagettftext($dst_photo, $this->watermarktext["size"], $this->watermarktext["angle"], $x + $ax, $y + $ay, $color, $this->watermarktext["fontpath"], $this->watermarktext["text"]);}else{ imagealphablending($watermark_logo, true); imagecopymerge($dst_photo, $watermark_logo, $x, $y, 0, 0, $logowidth, $logoheight, $this->watermarktrans);}$targetfile = !$preview ? $this->targetfile : "./watermark_tmp.jpg";if($this->attachinfo["mime"] == "image/jpeg"){ $imagefunc($dst_photo, $targetfile, $this->watermarkquality);}else{ $imagefunc($dst_photo, $targetfile);}$this->attach["size"] = filesize($this->targetfile); }} }}//End Class
希望本文所述对大家的php程序设计有所帮助。