加水印类
http://hi.baidu.com/%C0%BC%C0%BCsns/blog/item/534b78915575281b7bf48017.htmlhttp://www.cardii.net/php-use-imagemagick/
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http://hi.baidu.com/%D5%E4%B2%D8%B5%C4%C7%E9%CA%E9/blog
<?phpclass Image {/*** 加给图片加水印** @param strimg $groundImage 要加水印地址* @param int $waterPos 水印位置* @param string $waterImage 水印图片地址* @param string $waterText 文本文字* @param int $textFont 文字大小* @param string $textColor 文字颜色* @param int $minWidth 小于此值不加水印* @param int $minHeight 小于此值不加水印* @param float $alpha 透明度* @return FALSE* @author liyonghua 2008-10-28 修改中...*/public static function waterMark($groundImage , $waterPos = 0 , $waterImage = "" , $waterText = "" , $textFont = 15 , $textColor = "#FF0000",$minWidth='100',$minHeight='100',$alpha=0.9){$isWaterImg = FALSE;$bg_h = $bg_w = $water_h = $water_w = 0;//获取背景图的高，宽if(is_file($groundImage) && !empty($groundImage)){ $bg = new Imagick(); $bg ->readImage($groundImage); $bg_h = $bg->getImageHeight(); $bg_w = $bg->getImageWidth();}//获取水印图的高，宽if(is_file($waterImage) && !empty($waterImage)){ $water = new Imagick($waterImage); $water_h = $water->getImageHeight(); $water_w = $water->getImageWidth();}//如果背景图的高宽小于水印图的高宽或指定的高和宽则不加水印if($bg_h < $minHeight || $bg_w < $minWidth || $bg_h < $water_h || $bg_w < $water_w ) { return ;}else { $isWaterImg = TRUE;}//加水印if($isWaterImg){ $dw = new ImagickDraw(); //加图片水印 if(is_file($waterImage)){ $water->setImageOpacity($alpha); $dw -> setGravity($waterPos); $dw -> composite($water->getImageCompose(),0,0,50,0,$water); $bg -> drawImage($dw); if(!$bg -> writeImage($groundImage)){ return FALSE; } }else{ //加文字水印 $dw -> setFontSize($textFont); $dw -> setFillColor($textColor); $dw -> setGravity($waterPos); $dw -> setFillAlpha($alpha); $dw -> annotation(0,0,$waterText); $bg -> drawImage($dw); if(!$bg -> writeImage($groundImage)){ return FALSE; } }}}/** * 功能：PHP图片水印 (水印支持图片或文字) * 参数： * $groundImage 背景图片，即需要加水印的图片，暂只支持GIF,JPG,PNG格式； * $waterPos 水印位置，有10种状态，0为随机位置； * 1为顶端居左，2为顶端居中，3为顶端居右； * 4为中部居左，5为中部居中，6为中部居右； * 7为底端居左，8为底端居中，9为底端居右； * $waterImage 图片水印，即作为水印的图片，暂只支持GIF,JPG,PNG格式； * $waterText 文字水印，即把文字作为为水印，支持ASCII码，不支持中文； * $textFont 文字大小，值为1、2、3、4或5，默认为5； * $textColor 文字颜色，值为十六进制颜色值，默认为#FF0000(红色)； * * 注意：Support GD 2.0，Support FreeType、GIF Read、GIF Create、JPG 、PNG * $waterImage 和 $waterText 最好不要同时使用，选其中之一即可，优先使用 $waterImage。 * 当$waterImage有效时，参数$waterString、$stringFont、$stringColor均不生效。 * 加水印后的图片的文件名和 $groundImage 一样。 * 作者：longware @ 2004-11-3 14:15:13 * */public static function waterMark2($groundImage , $waterPos = 0 , $waterImage = "" , $waterText = "" , $textFont = 5 , $textColor = "#FF0000",$minwidth,$minheight){ $isWaterImage = FALSE ;// $waterImage = SYSROOTPATH . $waterImage; $formatMsg = "暂不支持该文件格式，请用图片处理软件将图片转换为GIF、JPG、PNG格式。" ; //读取水印文件 if(!empty( $waterImage ) && file_exists ( $waterImage )) { $isWaterImage = TRUE ; $water_info = getimagesize ( $waterImage ); $water_w = $water_info [ 0 ]; //取得水印图片的宽 $water_h = $water_info [ 1 ]; //取得水印图片的高 switch( $water_info [ 2 ]) //取得水印图片的格式 { case 1 : $water_im = imagecreatefromgif ( $waterImage );break; case 2 : $water_im = imagecreatefromjpeg ( $waterImage );break; case 3 : $water_im = imagecreatefrompng ( $waterImage );break; default:die( $formatMsg ); } } //读取背景图片 if(!empty( $groundImage ) && file_exists ( $groundImage )) { $ground_info = getimagesize ( $groundImage ); $ground_w = $ground_info [ 0 ]; //取得背景图片的宽 $ground_h = $ground_info [ 1 ]; //取得背景图片的高 switch( $ground_info [ 2 ]) //取得背景图片的格式 { case 1 : $ground_im = imagecreatefromgif ( $groundImage );break; case 2 : $ground_im = imagecreatefromjpeg ( $groundImage );break; case 3 : $ground_im = imagecreatefrompng ( $groundImage );break; default:die( $formatMsg ); } } else { die( "需要加水印的图片不存在！" ); } //水印位置 if( $isWaterImage ) //图片水印 { $w = $water_w ; $h = $water_h ; $label = "图片的" ; } else //文字水印 { $temp = imagettfbbox ( ceil ( $textFont * 2.5 ), 0 , SYSROOTPATH."images/watermark/ant1.ttf" , $waterText ); //取得使用 TrueType 字体的文本的范围 $w = $temp [ 2 ] - $temp [ 6 ]; $h = $temp [ 3 ] - $temp [ 7 ]; unset( $temp ); $label = "文字区域" ; } // add if( ( $ground_w < $w ) || ( $ground_h < $h ) || ( $ground_w < $minwidth ) || ( $ground_h < $minheight ) ){ echo "需要加水印的图片的长度或宽度比水印" . $label . "还小，无法生成水印！" ; return; } switch( $waterPos ) { case 0 : //随机 $posX = rand ( 0 ,( $ground_w - $w )); $posY = rand ( 0 ,( $ground_h - $h )); break; case 1 : //1为顶端居左 $posX = 0 ; $posY = 0 ; break; case 2 : //2为顶端居中 $posX = ( $ground_w - $w ) / 2 ; $posY = 0 ; break; case 3 : //3为顶端居右 $posX = $ground_w - $w ; $posY = 0 ; break; case 4 : //4为中部居左 $posX = 0 ; $posY = ( $ground_h - $h ) / 2 ; break; case 5 : //5为中部居中 $posX = ( $ground_w - $w ) / 2 ; $posY = ( $ground_h - $h ) / 2 ; break; case 6 : //6为中部居右 $posX = $ground_w - $w ; $posY = ( $ground_h - $h ) / 2 ; break; case 7 : //7为底端居左 $posX = 0 ; $posY = $ground_h - $h ; break; case 8 : //8为底端居中 $posX = ( $ground_w - $w ) / 2 ; $posY = $ground_h - $h ; break; case 9 : //9为底端居右 $posX = $ground_w - $w ; $posY = $ground_h - $h ; break; default: //随机 $posX = rand ( 0 ,( $ground_w - $w )); $posY = rand ( 0 ,( $ground_h - $h )); break; } //设定图像的混色模式 imagealphablending ( $ground_im , true ); if( $isWaterImage ) //图片水印 { imagecopy ( $ground_im , $water_im , $posX , $posY , 0 , 0 , $water_w , $water_h ); //拷贝水印到目标文件 } else //文字水印 { if( !empty( $textColor ) && ( strlen ( $textColor )== 7 ) ) { $R = hexdec ( substr ( $textColor , 1 , 2 )); $G = hexdec ( substr ( $textColor , 3 , 2 )); $B = hexdec ( substr ( $textColor , 5 )); } else { die( "水印文字颜色格式不正确！" ); } imagestring ( $ground_im , $textFont , $posX , $posY , $waterText , imagecolorallocate ( $ground_im , $R , $G , $B )); } //生成水印后的图片 @unlink ( $groundImage ); switch( $ground_info [ 2 ]) //取得背景图片的格式 { case 1 : imagegif ( $ground_im , $groundImage );break; case 2 : imagejpeg ( $ground_im , $groundImage );break; case 3 : imagepng ( $ground_im , $groundImage );break; default:die( $errorMsg ); } //释放内存 if(isset( $water_info )) unset( $water_info ); if(isset( $water_im )) imagedestroy ( $water_im ); unset( $ground_info ); imagedestroy ( $ground_im );}}//end class?>
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