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帝国CMS缩略图函数改进(GD库改进)
本文关键字词:缩略图,缩略图函数,帝国CMS,帝国CMS,帝国CMS缩略图去黑边框
第一种方式 帝国默认:
sys_ResizeImg($r[titlepic],宽,高,0);//帝国默认的不裁剪缩放生成缩略图的方式
第二种方式 帝国默认:
sys_ResizeImg($r[titlepic],宽,高,1);//帝国默认的裁剪缩放生成缩略图的方式
第三种方式 去掉裁剪不够时的黑边并且从图片缩放后中间裁剪:
sys_ResizeImg($r[titlepic],宽,高,2);//新加去黑边裁剪生成缩略图的方式
第四种方式 只固定图片的宽,高度不限制(类似不规则瀑布流的图片形式),高填写为大于0的任意整数数字:
sys_ResizeImg($r[titlepic],宽,高,3);//新加去黑边生成类似瀑布流格式的方式
/e/class/gd.php 函数全部代码如下:
- <?php
- define('InEmpireCMSGd',TRUE);
- //原文件,新文件,宽度,高度,维持比例
- function ResizeImage($big_image_name, $new_name, $max_width = 400, $max_height = 400, $resize = 1){
- $returnr['file']='';
- $returnr['filetype']='';
- if($temp_img_type = @getimagesize($big_image_name)) {preg_match('/\/([a-z]+)$/i', $temp_img_type[mime], $tpn); $img_type = $tpn[1];
- }else{
- preg_match('/\.([a-z]+)$/i', $big_image_name, $tpn); $img_type = $tpn[1];
- }
- $all_type = array(
- "jpg" => array("create"=>"ImageCreateFromjpeg", "output"=>"imagejpeg" , "exn"=>".jpg"),
- "gif" => array("create"=>"ImageCreateFromGIF" , "output"=>"imagegif" , "exn"=>".gif"),
- "jpeg" => array("create"=>"ImageCreateFromjpeg", "output"=>"imagejpeg" , "exn"=>".jpg"),
- "png" => array("create"=>"imagecreatefrompng" , "output"=>"imagepng" , "exn"=>".png"),
- "wbmp" => array("create"=>"imagecreatefromwbmp", "output"=>"image2wbmp" , "exn"=>".wbmp")
- );
- $func_create = $all_type[$img_type]['create'];
- if(empty($func_create) or !function_exists($func_create)) {
- return $returnr;
- }
- //输出
- $func_output = $all_type[$img_type]['output'];
- $func_exname = $all_type[$img_type]['exn'];
- if(($func_exname=='.gif'||$func_exname=='.png'||$func_exname=='.wbmp')&&!function_exists($func_output)) {
- $func_output='imagejpeg';
- $func_exname='.jpg';
- }
- $big_image = $func_create($big_image_name);
- $big_width = imagesx($big_image);
- $big_height = imagesy($big_image);
- if($big_width <= $max_width and $big_height <= $max_height) {
- $func_output($big_image, $new_name.$func_exname);
- $returnr['file']=$new_name.$func_exname;
- $returnr['filetype']=$func_exname;
- return $returnr;
- }
- $ratiow = $max_width / $big_width;
- $ratioh = $max_height / $big_height;
- $new_width = ($ratiow > 1) ? $big_width : $max_width;
- $new_height = ($ratioh > 1) ? $big_height : $max_height;
- if($resize == 1) {
- if($big_width >= $max_width and $big_height >= $max_height) {
- if($big_width > $big_height) {
- $tempx = $max_width / $ratioh;
- $tempy = $big_height;
- $srcX = ($big_width - $tempx) / 2;
- $srcY = 0;
- } else {
- $tempy = $max_height / $ratiow;
- $tempx = $big_width;
- $srcY = ($big_height - $tempy) / 2;
- $srcX = 0;
- }
- } else {
- if($big_width > $big_height){
- $tempx = $max_width;
- $tempy = $big_height;
- $srcX = ($big_width - $tempx) / 2;
- $srcY = 0;
- } else {
- $tempy = $max_height;
- $tempx = $big_width;
- $srcY = ($big_height - $tempy) / 2;
- $srcX = 0;
- }
- }
- }elseif($resize == 2){//同比例缩放超出裁切
- if($big_width >= $max_width and $big_height >= $max_height){
- if($max_width >= ($big_width * $ratioh)){
- $tempx=$big_width;
- $tempy=$max_height / $ratiow;
- $srcX=0;
- $srcY=($big_height - $tempy) / 2;
- }elseif($max_height >= ( $big_height * $ratiow)){
- $tempx=$max_width / $ratioh;
- $tempy=$big_height;
- $srcX=($big_width - $tempx) / 2;
- $srcY=0;
- }else{
- $tempx=$max_width;
- $tempy=$big_height;
- $srcX=($big_width - $tempx) / 2;
- $srcY=0;
- }
- }else{
- if($max_height >= $big_height){
- $tempx=$max_width;
- $tempy=$big_height;
- $srcX=($big_width - $max_width) / 2;
- $srcY=0;
- }elseif($max_width >= $big_width){
- $tempx=$big_width;
- $tempy=$max_height;
- $srcX=0;
- $srcY=($big_height - $max_height) / 2;
- }
- }
- }elseif($resize == 3){//宽度固定 高度同比例任意
- $srcX = 0;
- $srcY = 0;
- $tempx = $big_width;
- $tempy = $big_height;
- if($big_width >= $max_width){
- $new_height=$big_height*$ratiow;
- }else{
- $new_height=$big_height;
- }
- }else { //不保持比例
- $srcX = 0;
- $srcY = 0;
- $tempx = $big_width;
- $tempy = $big_height;
- }
- if(function_exists("imagecopyresampled")){
- $temp_image = imagecreatetruecolor($new_width, $new_height);
- //echo $tempx;exit;
- imagecopyresampled($temp_image, $big_image, 0, 0, $srcX, $srcY, $new_width, $new_height, $tempx, $tempy);
- } else {
- $temp_image = imagecreate($new_width, $new_height);
- imagecopyresized($temp_image, $big_image, 0, 0, $srcX, $srcY, $new_width, $new_height, $tempx, $tempy);
- }
- /*增加高质量输出图像*/
- $zhiliang=$func_exname=='.png'?9:100;
- $func_output($temp_image, $new_name.$func_exname,$zhiliang);
- //$func_output($temp_image, $new_name.$func_exname);
- ImageDestroy($big_image);
- ImageDestroy($temp_image);
- $returnr['file']=$new_name.$func_exname;
- $returnr['filetype']=$func_exname;
- return $returnr;
- }
- /*
- * 功能:图片加水印 (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 $groundImage 一样。
- */
- function imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000",$myfontpath="../data/mask/cour.ttf",$w_pct,$w_quality){
- global $fun_r,$editor;
- if($editor==1){$a='../';}
- elseif($editor==2){$a='../../';}
- elseif($editor==3){$a='../../../';}
- else{$a='';}
- $waterImage=$waterImage?$a.$waterImage:'';
- $myfontpath=$myfontpath?$a.$myfontpath:'';
- $isWaterImage = FALSE;
- $formatMsg = $fun_r['synotdotype'];
- //读取水印文件
- if(!empty($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:echo $formatMsg;return "";
- }
- }
- //读取背景图片
- if(!empty($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:echo $formatMsg;return "";
- }
- }else {
- echo $fun_r['synotdoimg'];
- return "";
- }
- //水印位置
- if($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,$myfontpath,$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);
- $label = "文字区域";
- }
- if( ($ground_w<$w) || ($ground_h<$h) ) {
- echo $fun_r['sytoosmall'];
- return '';
- }
- switch($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($isWaterImage){//图片水印
- if($water_info[2]==3) {
- imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷贝水印到目标文件
- }else {
- imagecopymerge($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h,$w_pct);//拷贝水印到目标文件
- }
- }else{//文字水印
- if( !empty($textColor) && (strlen($textColor)==7) ) {
- $R = hexdec(substr($textColor,1,2));
- $G = hexdec(substr($textColor,3,2));
- $B = hexdec(substr($textColor,5));
- }else {
- echo $fun_r['synotfontcolor'];
- return "";
- }
- 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,$groundImage,$w_quality);break;
- case 3:imagepng($ground_im,$groundImage);break;
- default:echo $formatMsg;return "";
- }
- //释放内存
- if(isset($water_info)) unset($water_info);
- if(isset($water_im)) imagedestroy($water_im);
- unset($ground_info);
- imagedestroy($ground_im);
- }
- ?>
复制代码
懒人下载包:
gd.php
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2019/04/08 修复 宽高与原图宽高完全相同生成黑图的BUG,请及时更新!
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