www.gusucode.com > PHP展示型企业网站模板米拓整站源码 1.0PHP源码程序 > PHP展示型企业网站模板米拓整站源码 1.0/MetInfozs_v1.0/MetInfozs_v1.0/app/system/include/class/thumb.class.php
<?php
# MetInfo Enterprise Content Management System
# Copyright (C) MetInfo Co.,Ltd (http://www.metinfo.cn). All rights reserved.
defined('IN_MET') or exit('No permission');
load::sys_func('file.func.php');
/**
* 缩略图类
* @param string $thumb_width 缩略图宽
* @param string $thumb_height 缩略图高
* @param string $thumb_savepath 缩略图保存地址
* @param string $thumb_save_type 保存方式，1:保存在原图路径的子目录下，2:覆盖原图片，3:自定义路径
* @param string $thumb_bgcolor 缩略图背景颜色，已#开头
* @param string $thumb_kind 生成缩略图方式，1拉升，2留白，3裁剪
* 以上路径变量都必须是绝对路径，如果不使用类的set方法
*/
class thumb {
public $thumb_src_image = "";
public $thumb_width = 350;
public $thumb_height = 350;
public $thumb_savepath = "";
public $thumb_save_type = 1;
public $thumb_bgcolor =' ';
public $thumb_kind = 1;
function __construct() {
global $_M;
$this->list_news();
}
/**
* 设置字段
* @param string $name 需要设置的字段名，为public字段都可以设置
* @param string $value 需要设置的字段名的值
* thumb_savepath当thumb_save_type为3时置可以是绝对路径，也是相对网站后台根目录的相对路径
* thumb_savepath当thumb_save_type为2，设置无效
* thumb_savepath当thumb_save_type为1，thumb_savepath为相对原图的路径
*/
public function set($name, $value) {
global $_M;
if ($value === NULL) {
return false;
}
switch ($name) {
case 'thumb_width';
$this->thumb_width = $value;
break;
case 'thumb_height';
$this->thumb_height = $value;
break;
case 'thumb_savepath';
if ($this->thumb_save_type == 3) {
$this->thumb_savepath = path_absolute($value);
} else {
$this->thumb_savepath = $value;
}
$this->thumb_savepath = path_standard($this->thumb_savepath);
break;
case 'thumb_save_type';
$this->thumb_save_type = $value;
break;
case 'thumb_bgcolor';
$this->thumb_bgcolor = $value;
break;
case 'thumb_kind';
$this->thumb_kind = $value;
break;
}
}
/**
* 按网站列表页缩略图方式缩略图片（2 = 新闻模块, 3 = 产品模块, 5 = 图片模块）
* @param string $module 2/news:新闻模块，3/product:产品模块，5/img:图片模块）
*/
public function list_module($module) {
if ($module == 'news') $module = 2;
if ($module == 'product') $module = 3;
if ($module == 'img') $module = 5;
switch ($module) {
case 2:
$this->list_news();
break;
case 3:
$this->list_product();
break;
case 5:
$this->list_img();
break;
}
}
/**
* 按网站内容页缩略图方式缩略图片（3 = 产品模块, 5 = 图片模块）
* @param string $module 3/product:产品模块，5/img:图片模块）
*/
public function content_module($module) {
if ($module == 'product') $module = 3;
if ($module == 'img') $module = 5;
switch ($module) {
case 3;
$this->contents_product();
break;
case 5;
$this->contents_img();
break;
}
}
/**
* 按网站新闻列表页缩略图方式缩略图片
*/
public function list_news() {
global $_M;
$this->set('thumb_width', $_M['config']['met_newsimg_x']);
$this->set('thumb_height', $_M['config']['met_newsimg_y']);
$this->set('thumb_save_type', 1);
$this->set('thumb_savepath', 'thumb/');
$this->set('thumb_kind', $_M['config']['met_thumb_kind']);
$this->set('thumb_bgcolor', '#FFFFFF');
}
/**
* 按网站产品列表页缩略图方式缩略图片
*/
public function list_product() {
global $_M;
$this->set('thumb_width', $_M['config']['met_productimg_x']);
$this->set('thumb_height', $_M['config']['met_productimg_y']);
$this->set('thumb_save_type', 1);
$this->set('thumb_savepath', 'thumb/');
$this->set('thumb_kind', $_M['config']['met_thumb_kind']);
$this->set('thumb_bgcolor', '#FFFFFF');
}
/**
* 按网站图片列表页缩略图方式缩略图片
*/
public function list_img() {
global $_M;
$this->set('thumb_width', $_M['config']['met_imgs_x']);
$this->set('thumb_height', $_M['config']['met_imgs_y']);
$this->set('thumb_save_type', 1);
$this->set('thumb_savepath', 'thumb/');
$this->set('thumb_kind', $_M['config']['met_thumb_kind']);
$this->set('thumb_bgcolor', '#FFFFFF');
}
/**
* 按网站图片内容页缩略图方式缩略图片
*/
public function contents_img() {
global $_M;
$this->set('thumb_width', $_M['config']['met_imgdetail_x']);
$this->set('thumb_height', $_M['config']['met_imgdetail_y']);
$this->set('thumb_save_type', 1);
$this->set('thumb_savepath', 'thumb_dis/');
$this->set('thumb_kind', $_M['config']['met_thumb_kind']);
$this->set('thumb_bgcolor', '#FFFFFF');
}
/**
* 按网站产品内容页缩略图方式缩略图片
*/
public function contents_product() {
global $_M;
$this->set('thumb_width', $_M['config']['met_productdetail_x']);
$this->set('thumb_height', $_M['config']['met_productdetail_y']);
$this->set('thumb_kind', $_M['config']['met_thumb_kind']);
$this->set('thumb_save_type', 1);
$this->set('thumb_savepath', 'thumb_dis/');
$this->set('thumb_bgcolor', '#FFFFFF');
}
/**
* 生成缩略图的方法
* @param strint 原图地址
* @return array 返回成功或错误信息
* 返回值为数组各字段含义，error:是否出错，1出错，0正常，errorcode:报错代码，path:缩略图片路径
*/
public function createthumb($thumb_src_image) {
global $_M;
$thumb_src_image = path_absolute($thumb_src_image);
if ($this->thumb_save_type == 1) {
$thumb_savepath = dirname($thumb_src_image).'/'.$this->thumb_savepath;
}
if ($this->thumb_save_type == 2) {
$thumb_savepath = dirname($thumb_src_image).'/';
}
if ($this->thumb_save_type == 3) {
$thumb_savepath = $this->thumb_savepath;
}
if (stristr(PHP_OS,"WIN")) {
$thumb_src_image = @iconv("utf-8","GBK",$thumb_src_image);
}
if(!file_exists($thumb_src_image) || is_dir($thumb_src_image)){
return $this->error($_M['word']['batchtips30']);
}
$this->thumb_width=$this->thumb_width?$this->thumb_width:100;
$this->thumb_height=$this->thumb_height?$this->thumb_height:100;
$gd = $this->gd_version();
//检查原始是否文件存在并且得到原图信息
$org_info = @getimagesize($thumb_src_image);//返回图片大小
if ($org_info[mime]=='image/bmp') {//bmp图无法压缩
return $this->error($_M['word']['upfileFail5']);
}
if (!$this->check_img_function($org_info[2])) {
return $this->error($_M['word']['upfileFail6']);
}
$img_org = $this->img_resource($thumb_src_image, $org_info[2]);
//原始图像和缩略图尺寸对比
$scale_org = $org_info[0] / $org_info[1];
$scale_tumnb = $this->thumb_width / $this->thumb_height;
//处理缩略图宽度和高度为0的情况，背景和缩略图一样大
if ($this->thumb_width == 0) {
$this->thumb_width = $this->thumb_height * $scale_org;
}
if ($this->thumb_height == 0) {
$this->thumb_height = $this->thumb_width / $scale_org;
}
//创建缩略图
if ($gd == 2) {//创建一张缩略图（黑色）
$img_thumb = imagecreatetruecolor($this->thumb_width, $this->thumb_height);
} else {
$img_thumb = imagecreate($this->thumb_width, $this->thumb_height);
}
//缩略图背景颜色
if (empty($this->thumb_bgcolor)) $this->thumb_bgcolor = "#FFFFFF";
$this->thumb_bgcolor = trim($this->thumb_bgcolor, "#");
sscanf($this->thumb_bgcolor, "%2x%2x%2x", $red, $green, $blue);
$clr = imagecolorallocate($img_thumb, $red, $green, $blue);
imagefilledrectangle($img_thumb, 0, 0, $this->thumb_width, $this->thumb_height, $clr);//创建背景色，默认为白色
switch ($this->thumb_kind) {
case 1:
$dst_x=0;
$dst_y=0;
$lessen_width=$this->thumb_width;
$lessen_height=$this->thumb_height;
$scr_x=0;
$scr_y=0;
$scr_w=$org_info[0];
$scr_h=$org_info[1];
break;
case 2:
if ($org_info[0] / $this->thumb_width > $org_info[1] / $this->thumb_height){//上下留白
$lessen_width = $this->thumb_width;
$lessen_height = $this->thumb_width / $scale_org;
}
else{//左右留白
$lessen_width = $this->thumb_height * $scale_org;
$lessen_height = $this->thumb_height;
}
$dst_x = ($this->thumb_width - $lessen_width) / 2;
$dst_y = ($this->thumb_height - $lessen_height) / 2;
$scr_x=0;
$scr_y=0;
$scr_w=$org_info[0];
$scr_h=$org_info[1];
break;
case 3:
$dst_x=0;
$dst_y=0;
$lessen_width=$this->thumb_width;
$lessen_height=$this->thumb_height;
if ($org_info[0] / $this->thumb_width > $org_info[1] / $this->thumb_height) {//上下留白,截左右
$scr_w = $org_info[1] * $scale_tumnb;
$scr_h = $org_info[1];
} else {//左右留白,截上下
$scr_w = $org_info[0];
$scr_h = $org_info[0] / $scale_tumnb;
}
$scr_x = ($org_info[0] - $scr_w) / 2;
$scr_y = ($org_info[1] - $scr_h) / 2;
break;
}
//放大原始图片
if ($gd == 2) {
imagecopyresampled($img_thumb, $img_org, $dst_x, $dst_y, $scr_x, $scr_y, $lessen_width, $lessen_height, $scr_w, $scr_h);
} else {
imagecopyresized($img_thumb, $img_org, $dst_x, $dst_y, $scr_x, $scr_y, $lessen_width, $lessen_height, $scr_w, $scr_h);
}
if (!makedir($thumb_savepath)) {
return $this->error($_M['word']['upfileFail4']);
}
$thumbname = $thumb_savepath.basename($thumb_src_image);;
//Create
switch ($org_info[mime]) {
case 'image/gif':
if (function_exists('imagegif')) {
$re=imagegif($img_thumb, $thumbname);
} else {
return $this->error($_M['word']['upfileFail9']);
}
break;
case 'image/pjpeg':
case 'image/jpeg':
if (function_exists('imagejpeg')) {
$re=imagejpeg($img_thumb, $thumbname,100);
} else {
return $this->error($_M['word']['upfileFail10']);
}
break;
case 'image/x-png':
case 'image/png':
if (function_exists('imagejpeg')) {
$re=imagepng($img_thumb, $thumbname);
} else {
return $this->error($_M['word']['upfileFail11']);
}
break;
default:
return $this->error($_M['word']['upfileFail7']);
}
if (!$re) {
return $this->error($_M['word']['upfileFail8']);
}
if (stristr(PHP_OS,"WIN")) {
$thumbname = @iconv("GBK","utf-8",$thumbname);
}
$thumbname='../'.str_replace(PATH_WEB, '', $thumbname);
imagedestroy($img_thumb);
imagedestroy($img_org);
return $this->sucess($thumbname);
}
/**
* 创建图片资源
* @param string $img: 创建图片的路径
* @param string $mime_type: 图片类型
* @return 返回创建的图片资源
*/
protected function img_resource($img, $mime_type) {
switch ($mime_type) {
case 1:
case 'image/gif':
$res = imagecreatefromgif($img);
break;
case 2:
case 'image/pjpeg':
case 'image/jpeg':
$res = imagecreatefromjpeg($img);
break;
case 3:
case 'image/x-png':
case 'image/png':
$res = imagecreatefrompng($img);
break;
default:
return false;
}
return $res;
}
/**
* 得到的Gd服务器版本
* @return int 返回Gd服务器版本
*/
protected function gd_version() {
static $version = -1;
if ($version >= 0) {
return $version;
}
if (!extension_loaded('gd')) {
$version = 0;
} else {
// 使用 gd_info() 函数取得当前安装的 GD 库的信息
if (PHP_VERSION >= '4.3') {
if (function_exists('gd_info')) {
$ver_info = gd_info();
preg_match('/\d/', $ver_info['GD Version'], $match);
$version = $match[0];
} else {
if (function_exists('imagecreatetruecolor')) {
$version = 2;
} else if (function_exists('imagecreate')) {
$version = 1;
}
}
}else{
if (preg_match('/phpinfo/', ini_get('disable_functions'))) {
$version = 1;
} else {
// 使用 phpinfo() 函数
ob_start();
phpinfo(8);
$info = ob_get_contents();
ob_end_clean();
$info = stristr($info, 'gd version');
preg_match('/\d/', $info, $match);
$version = $match[0];
}
}
}
return $version;
}
/**
* 检测PHP版本以及处理函数是否可用
* @return buttton 返回可用或不可用信息
*/
protected function check_img_function($img) {
switch ($img){
case 'image/gif':
case 1:
if (PHP_VERSION >= '4.3') {
return function_exists('imagecreatefromgif');
} else {
return (imagetypes() & IMG_GIF) > 0;
}
break;
case 'image/pjpeg':
case 'image/jpeg':
case 2:
if (PHP_VERSION >= '4.3') {
return function_exists('imagecreatefromjpeg');
} else {
return (imagetypes() & IMG_JPG) > 0;
}
break;
case 'image/x-png':
case 'image/png':
case 3:
if (PHP_VERSION >= '4.3') {
return function_exists('imagecreatefrompng');
} else {
return (imagetypes() & IMG_PNG) > 0;
}
break;
default:
return false;
}
}
/**
* 缩略图错误调用方法
* @param string $error 错误信息
* @return array 返回错误信息
*/
protected function error($error) {
$back['error'] = 1;
$back['errorcode'] = $error;
return $back;
}
/**
* 缩略图成功调用方法
* @param string $path 路径
* @return array 返回成功路径(相对于当前路径)
*/
protected function sucess($path) {
$back['error']=0;
$back['path']=$path;
return $back;
}
}
# This program is an open source system, commercial use, please consciously to purchase commercial license.
# Copyright (C) MetInfo Co., Ltd. (http://www.metinfo.cn). All rights reserved.
?>