486 lines
20 KiB
PHP
486 lines
20 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace Org\Util;
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/**
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* 图像操作类库
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* @category ORG
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* @package ORG
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* @subpackage Util
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* @author liu21st <liu21st@gmail.com>
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*/
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class Image {
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/**
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* 取得图像信息
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* @static
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* @access public
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* @param string $image 图像文件名
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* @return mixed
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*/
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static function getImageInfo($img) {
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$imageInfo = getimagesize($img);
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if ($imageInfo !== false) {
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$imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1));
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$imageSize = filesize($img);
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$info = array(
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"width" => $imageInfo[0],
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"height" => $imageInfo[1],
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"type" => $imageType,
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"size" => $imageSize,
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"mime" => $imageInfo['mime']
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);
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return $info;
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} else {
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return false;
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}
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}
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/**
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* 为图片添加水印
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* @static public
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* @param string $source 原文件名
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* @param string $water 水印图片
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* @param string $$savename 添加水印后的图片名
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* @param string $alpha 水印的透明度
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* @return void
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*/
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static public function water($source, $water, $savename=null, $alpha=80) {
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//检查文件是否存在
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if (!file_exists($source) || !file_exists($water))
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return false;
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//图片信息
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$sInfo = self::getImageInfo($source);
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$wInfo = self::getImageInfo($water);
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//如果图片小于水印图片，不生成图片
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if ($sInfo["width"] < $wInfo["width"] || $sInfo['height'] < $wInfo['height'])
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return false;
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//建立图像
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$sCreateFun = "imagecreatefrom" . $sInfo['type'];
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$sImage = $sCreateFun($source);
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$wCreateFun = "imagecreatefrom" . $wInfo['type'];
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$wImage = $wCreateFun($water);
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//设定图像的混色模式
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imagealphablending($wImage, true);
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//图像位置,默认为右下角右对齐
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$posY = $sInfo["height"] - $wInfo["height"];
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$posX = $sInfo["width"] - $wInfo["width"];
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//生成混合图像
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imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo['width'], $wInfo['height'], $alpha);
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//输出图像
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$ImageFun = 'Image' . $sInfo['type'];
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//如果没有给出保存文件名，默认为原图像名
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if (!$savename) {
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$savename = $source;
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@unlink($source);
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}
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//保存图像
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$ImageFun($sImage, $savename);
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imagedestroy($sImage);
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}
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function showImg($imgFile, $text='', $x='10', $y='10', $alpha='50') {
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//获取图像文件信息
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//2007/6/26 增加图片水印输出，$text为图片的完整路径即可
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$info = Image::getImageInfo($imgFile);
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if ($info !== false) {
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$createFun = str_replace('/', 'createfrom', $info['mime']);
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$im = $createFun($imgFile);
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if ($im) {
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$ImageFun = str_replace('/', '', $info['mime']);
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//水印开始
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if (!empty($text)) {
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$tc = imagecolorallocate($im, 0, 0, 0);
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if (is_file($text) && file_exists($text)) {//判断$text是否是图片路径
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// 取得水印信息
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$textInfo = Image::getImageInfo($text);
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$createFun2 = str_replace('/', 'createfrom', $textInfo['mime']);
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$waterMark = $createFun2($text);
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//$waterMark=imagecolorallocatealpha($text,255,255,0,50);
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$imgW = $info["width"];
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$imgH = $info["width"] * $textInfo["height"] / $textInfo["width"];
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//$y = ($info["height"]-$textInfo["height"])/2;
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//设置水印的显示位置和透明度支持各种图片格式
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imagecopymerge($im, $waterMark, $x, $y, 0, 0, $textInfo['width'], $textInfo['height'], $alpha);
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} else {
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imagestring($im, 80, $x, $y, $text, $tc);
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}
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//ImageDestroy($tc);
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}
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//水印结束
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if ($info['type'] == 'png' || $info['type'] == 'gif') {
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imagealphablending($im, FALSE); //取消默认的混色模式
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imagesavealpha($im, TRUE); //设定保存完整的 alpha 通道信息
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}
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Header("Content-type: " . $info['mime']);
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$ImageFun($im);
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@ImageDestroy($im);
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return;
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}
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//保存图像
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$ImageFun($sImage, $savename);
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imagedestroy($sImage);
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//获取或者创建图像文件失败则生成空白PNG图片
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$im = imagecreatetruecolor(80, 30);
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$bgc = imagecolorallocate($im, 255, 255, 255);
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$tc = imagecolorallocate($im, 0, 0, 0);
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imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
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imagestring($im, 4, 5, 5, "no pic", $tc);
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Image::output($im);
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return;
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}
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}
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/**
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* 生成缩略图
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* @static
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* @access public
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* @param string $image 原图
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* @param string $type 图像格式
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* @param string $thumbname 缩略图文件名
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* @param string $maxWidth 宽度
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* @param string $maxHeight 高度
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* @param string $position 缩略图保存目录
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* @param boolean $interlace 启用隔行扫描
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* @return void
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*/
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static function thumb($image, $thumbname, $type='', $maxWidth=200, $maxHeight=50, $interlace=true) {
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// 获取原图信息
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$info = Image::getImageInfo($image);
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if ($info !== false) {
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$srcWidth = $info['width'];
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$srcHeight = $info['height'];
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$type = empty($type) ? $info['type'] : $type;
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$type = strtolower($type);
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$interlace = $interlace ? 1 : 0;
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unset($info);
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$scale = min($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 计算缩放比例
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if ($scale >= 1) {
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// 超过原图大小不再缩略
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$width = $srcWidth;
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$height = $srcHeight;
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} else {
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// 缩略图尺寸
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$width = (int) ($srcWidth * $scale);
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$height = (int) ($srcHeight * $scale);
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}
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// 载入原图
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$createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type);
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if(!function_exists($createFun)) {
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return false;
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}
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$srcImg = $createFun($image);
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//创建缩略图
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if ($type != 'gif' && function_exists('imagecreatetruecolor'))
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$thumbImg = imagecreatetruecolor($width, $height);
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else
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$thumbImg = imagecreate($width, $height);
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//png和gif的透明处理 by luofei614
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if('png'==$type){
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imagealphablending($thumbImg, false);//取消默认的混色模式（为解决阴影为绿色的问题）
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imagesavealpha($thumbImg,true);//设定保存完整的 alpha 通道信息（为解决阴影为绿色的问题）
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}elseif('gif'==$type){
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$trnprt_indx = imagecolortransparent($srcImg);
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if ($trnprt_indx >= 0) {
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//its transparent
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$trnprt_color = imagecolorsforindex($srcImg , $trnprt_indx);
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$trnprt_indx = imagecolorallocate($thumbImg, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);
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imagefill($thumbImg, 0, 0, $trnprt_indx);
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imagecolortransparent($thumbImg, $trnprt_indx);
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}
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}
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// 复制图片
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if (function_exists("ImageCopyResampled"))
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imagecopyresampled($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
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else
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imagecopyresized($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
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// 对jpeg图形设置隔行扫描
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if ('jpg' == $type || 'jpeg' == $type)
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imageinterlace($thumbImg, $interlace);
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// 生成图片
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$imageFun = 'image' . ($type == 'jpg' ? 'jpeg' : $type);
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$imageFun($thumbImg, $thumbname);
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imagedestroy($thumbImg);
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imagedestroy($srcImg);
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return $thumbname;
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}
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return false;
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}
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/**
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* 根据给定的字符串生成图像
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* @static
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* @access public
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* @param string $string 字符串
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* @param string $size 图像大小 width,height 或者 array(width,height)
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* @param string $font 字体信息 fontface,fontsize 或者 array(fontface,fontsize)
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* @param string $type 图像格式 默认PNG
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* @param integer $disturb 是否干扰 1 点干扰 2 线干扰 3 复合干扰 0 无干扰
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* @param bool $border 是否加边框 array(color)
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* @return string
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*/
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static function buildString($string, $rgb=array(), $filename='', $type='png', $disturb=1, $border=true) {
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if (is_string($size))
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$size = explode(',', $size);
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$width = $size[0];
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$height = $size[1];
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if (is_string($font))
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$font = explode(',', $font);
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$fontface = $font[0];
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$fontsize = $font[1];
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$length = strlen($string);
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$width = ($length * 9 + 10) > $width ? $length * 9 + 10 : $width;
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$height = 22;
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if ($type != 'gif' && function_exists('imagecreatetruecolor')) {
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$im = @imagecreatetruecolor($width, $height);
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} else {
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$im = @imagecreate($width, $height);
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}
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if (empty($rgb)) {
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$color = imagecolorallocate($im, 102, 104, 104);
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} else {
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$color = imagecolorallocate($im, $rgb[0], $rgb[1], $rgb[2]);
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}
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$backColor = imagecolorallocate($im, 255, 255, 255); //背景色（随机）
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$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
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$pointColor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); //点颜色
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@imagefilledrectangle($im, 0, 0, $width - 1, $height - 1, $backColor);
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@imagerectangle($im, 0, 0, $width - 1, $height - 1, $borderColor);
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@imagestring($im, 5, 5, 3, $string, $color);
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if (!empty($disturb)) {
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// 添加干扰
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if ($disturb = 1 || $disturb = 3) {
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for ($i = 0; $i < 25; $i++) {
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imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $pointColor);
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}
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} elseif ($disturb = 2 || $disturb = 3) {
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for ($i = 0; $i < 10; $i++) {
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imagearc($im, mt_rand(-10, $width), mt_rand(-10, $height), mt_rand(30, 300), mt_rand(20, 200), 55, 44, $pointColor);
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}
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}
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}
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Image::output($im, $type, $filename);
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}
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/**
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* 生成图像验证码
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* @static
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* @access public
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* @param string $length 位数
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* @param string $mode 类型
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* @param string $type 图像格式
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* @param string $width 宽度
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* @param string $height 高度
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* @return string
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*/
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static function buildImageVerify($length=4, $mode=1, $type='png', $width=48, $height=22, $verifyName='verify') {
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import('ORG.Util.String');
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$randval = String::randString($length, $mode);
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session($verifyName, md5($randval));
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$width = ($length * 10 + 10) > $width ? $length * 10 + 10 : $width;
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if ($type != 'gif' && function_exists('imagecreatetruecolor')) {
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$im = imagecreatetruecolor($width, $height);
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} else {
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$im = imagecreate($width, $height);
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}
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$r = Array(225, 255, 255, 223);
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$g = Array(225, 236, 237, 255);
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$b = Array(225, 236, 166, 125);
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$key = mt_rand(0, 3);
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$backColor = imagecolorallocate($im, $r[$key], $g[$key], $b[$key]); //背景色（随机）
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$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
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imagefilledrectangle($im, 0, 0, $width - 1, $height - 1, $backColor);
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imagerectangle($im, 0, 0, $width - 1, $height - 1, $borderColor);
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$stringColor = imagecolorallocate($im, mt_rand(0, 200), mt_rand(0, 120), mt_rand(0, 120));
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// 干扰
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for ($i = 0; $i < 10; $i++) {
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imagearc($im, mt_rand(-10, $width), mt_rand(-10, $height), mt_rand(30, 300), mt_rand(20, 200), 55, 44, $stringColor);
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}
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for ($i = 0; $i < 25; $i++) {
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imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $stringColor);
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}
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for ($i = 0; $i < $length; $i++) {
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imagestring($im, 5, $i * 10 + 5, mt_rand(1, 8), $randval{$i}, $stringColor);
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}
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Image::output($im, $type);
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}
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// 中文验证码
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static function GBVerify($length=4, $type='png', $width=180, $height=50, $fontface='simhei.ttf', $verifyName='verify') {
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import('ORG.Util.String');
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$code = String::randString($length, 4);
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$width = ($length * 45) > $width ? $length * 45 : $width;
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session($verifyName, md5($code));
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$im = imagecreatetruecolor($width, $height);
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$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
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$bkcolor = imagecolorallocate($im, 250, 250, 250);
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imagefill($im, 0, 0, $bkcolor);
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@imagerectangle($im, 0, 0, $width - 1, $height - 1, $borderColor);
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// 干扰
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for ($i = 0; $i < 15; $i++) {
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$fontcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
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imagearc($im, mt_rand(-10, $width), mt_rand(-10, $height), mt_rand(30, 300), mt_rand(20, 200), 55, 44, $fontcolor);
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}
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for ($i = 0; $i < 255; $i++) {
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$fontcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
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imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $fontcolor);
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}
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if (!is_file($fontface)) {
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$fontface = dirname(__FILE__) . "/" . $fontface;
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}
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for ($i = 0; $i < $length; $i++) {
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$fontcolor = imagecolorallocate($im, mt_rand(0, 120), mt_rand(0, 120), mt_rand(0, 120)); //这样保证随机出来的颜色较深。
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$codex = String::msubstr($code, $i, 1);
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imagettftext($im, mt_rand(16, 20), mt_rand(-60, 60), 40 * $i + 20, mt_rand(30, 35), $fontcolor, $fontface, $codex);
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}
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Image::output($im, $type);
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}
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/**
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* 把图像转换成字符显示
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* @static
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* @access public
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* @param string $image 要显示的图像
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* @param string $type 图像类型，默认自动获取
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* @return string
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*/
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static function showASCIIImg($image, $string='', $type='') {
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$info = Image::getImageInfo($image);
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if ($info !== false) {
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$type = empty($type) ? $info['type'] : $type;
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unset($info);
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// 载入原图
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$createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type);
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$im = $createFun($image);
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$dx = imagesx($im);
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$dy = imagesy($im);
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$i = 0;
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$out = '<span style="padding:0px;margin:0;line-height:100%;font-size:1px;">';
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set_time_limit(0);
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for ($y = 0; $y < $dy; $y++) {
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for ($x = 0; $x < $dx; $x++) {
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$col = imagecolorat($im, $x, $y);
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$rgb = imagecolorsforindex($im, $col);
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$str = empty($string) ? '*' : $string[$i++];
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$out .= sprintf('<span style="margin:0px;color:#%02x%02x%02x">' . $str . '</span>', $rgb['red'], $rgb['green'], $rgb['blue']);
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}
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$out .= "<br>\n";
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}
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$out .= '</span>';
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imagedestroy($im);
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return $out;
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}
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return false;
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}
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/**
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* 生成UPC-A条形码
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* @static
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* @param string $type 图像格式
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* @param string $type 图像格式
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* @param string $lw 单元宽度
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* @param string $hi 条码高度
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* @return string
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*/
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static function UPCA($code, $type='png', $lw=2, $hi=100) {
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static $Lencode = array('0001101', '0011001', '0010011', '0111101', '0100011',
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'0110001', '0101111', '0111011', '0110111', '0001011');
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static $Rencode = array('1110010', '1100110', '1101100', '1000010', '1011100',
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'1001110', '1010000', '1000100', '1001000', '1110100');
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$ends = '101';
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$center = '01010';
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/* UPC-A Must be 11 digits, we compute the checksum. */
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if (strlen($code) != 11) {
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die("UPC-A Must be 11 digits.");
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}
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/* Compute the EAN-13 Checksum digit */
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$ncode = '0' . $code;
|
|
$even = 0;
|
|
$odd = 0;
|
|
for ($x = 0; $x < 12; $x++) {
|
|
if ($x % 2) {
|
|
$odd += $ncode[$x];
|
|
} else {
|
|
$even += $ncode[$x];
|
|
}
|
|
}
|
|
$code.= ( 10 - (($odd * 3 + $even) % 10)) % 10;
|
|
/* Create the bar encoding using a binary string */
|
|
$bars = $ends;
|
|
$bars.=$Lencode[$code[0]];
|
|
for ($x = 1; $x < 6; $x++) {
|
|
$bars.=$Lencode[$code[$x]];
|
|
}
|
|
$bars.=$center;
|
|
for ($x = 6; $x < 12; $x++) {
|
|
$bars.=$Rencode[$code[$x]];
|
|
}
|
|
$bars.=$ends;
|
|
/* Generate the Barcode Image */
|
|
if ($type != 'gif' && function_exists('imagecreatetruecolor')) {
|
|
$im = imagecreatetruecolor($lw * 95 + 30, $hi + 30);
|
|
} else {
|
|
$im = imagecreate($lw * 95 + 30, $hi + 30);
|
|
}
|
|
$fg = ImageColorAllocate($im, 0, 0, 0);
|
|
$bg = ImageColorAllocate($im, 255, 255, 255);
|
|
ImageFilledRectangle($im, 0, 0, $lw * 95 + 30, $hi + 30, $bg);
|
|
$shift = 10;
|
|
for ($x = 0; $x < strlen($bars); $x++) {
|
|
if (($x < 10) || ($x >= 45 && $x < 50) || ($x >= 85)) {
|
|
$sh = 10;
|
|
} else {
|
|
$sh = 0;
|
|
}
|
|
if ($bars[$x] == '1') {
|
|
$color = $fg;
|
|
} else {
|
|
$color = $bg;
|
|
}
|
|
ImageFilledRectangle($im, ($x * $lw) + 15, 5, ($x + 1) * $lw + 14, $hi + 5 + $sh, $color);
|
|
}
|
|
/* Add the Human Readable Label */
|
|
ImageString($im, 4, 5, $hi - 5, $code[0], $fg);
|
|
for ($x = 0; $x < 5; $x++) {
|
|
ImageString($im, 5, $lw * (13 + $x * 6) + 15, $hi + 5, $code[$x + 1], $fg);
|
|
ImageString($im, 5, $lw * (53 + $x * 6) + 15, $hi + 5, $code[$x + 6], $fg);
|
|
}
|
|
ImageString($im, 4, $lw * 95 + 17, $hi - 5, $code[11], $fg);
|
|
/* Output the Header and Content. */
|
|
Image::output($im, $type);
|
|
}
|
|
|
|
static function output($im, $type='png', $filename='') {
|
|
header("Content-type: image/" . $type);
|
|
$ImageFun = 'image' . $type;
|
|
if (empty($filename)) {
|
|
$ImageFun($im);
|
|
} else {
|
|
$ImageFun($im, $filename);
|
|
}
|
|
imagedestroy($im);
|
|
}
|
|
|
|
} |