近期优化网站处理的的问题,帝国CMS主动缩略图会呈现黑边框布景,很丑。看了GD库,发现没什么改的,网上找了下办法,完美处理了,共享下。

sys_ResizeImg函数去黑边办法

第一种办法 帝国默许:
sys_ResizeImg($r[titlepic],宽,高,0);//帝国默许的不裁剪缩放生成缩略图的办法
第二种办法 帝国默许:
sys_ResizeImg($r[titlepic],宽,高,1);//帝国默许的裁剪缩放生成缩略图的办法
第三种办法去掉裁剪不行时的黑边而且从图片缩放后中心裁剪:
sys_ResizeImg($r[titlepic],宽,高,2);//新加去黑边裁剪生成缩略图的办法
第四种办法 只固定图片的宽,高度不约束(相似不规则瀑布流的图片办法),高填写为大于0的恣意整数数字:
sys_ResizeImg($r[titlepic],宽,高,3);//新加去黑边生成相似瀑布流格局的办法

/e/class/gd.php 函数悉数代码如下:

<?php
define('InEmpireCMSGd',TRUE);

//原文件,新文件,宽度,高度,坚持份额
functionResizeImage($big_image_name,$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_widthand$big_height<=$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>=$max_widthand$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){//同份额缩放超出裁切
if($big_width>=$max_widthand$big_height>=$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;
$srcY=0;
}
}else{
if($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){//宽度固定高度同份额恣意
$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{//不坚持份额
$srcX=0;
$srcY=0;
$tempx=$big_width;
$tempy=$big_height;
}
if(function_exists("imagecopyresampled"))
{
$temp_image=imagecreatetruecolor($new_width,$new_height);
imagecopyresampled($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);
}
$func_output($temp_image,$new_name.$func_exname);
ImageDestroy($big_image);
ImageDestroy($temp_image);
$returnr['file']=$new_name.$func_exname;
$returnr['filetype']=$func_exname;
return$returnr;
}

/*
*功用:图片加水印(水印支撑图片或文字)
*参数:
*$groundImage布景图片,即需求加水印的图片,暂只支撑GIF,JPG,PNG格局;
*$waterPos水印方位,有10种状况,0为随机方位;
*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;
*$waterImage图片水印,即作为水印的图片,暂只支撑GIF,JPG,PNG格局;
*$waterText文字水印,即把文字作为为水印,支撑ASCII码,不支撑中文;
*$textFont文字大小,值为1、2、3、4或5,默许为5;
*$textColor文字色彩,值为十六进制色彩值,默许为#FF0000(赤色);
*
*留意:SupportGD2.0,SupportFreeType、GIFRead、GIFCreate、JPG、PNG
*$waterImage和$waterText最好不要一起运用,选其中之一即可,优先运用$waterImage。
*当$waterImage有用时,参数$waterString、$stringFont、$stringColor均不收效。
*加水印后的图片的文件名和$groundImage相同。
*/
functionimageWaterMark($groundImage,$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];//获得水印图片的宽
$water_h=$water_info[1];//获得水印图片的高

switch($water_info[2])//获得水印图片的格局
{
case1:$water_im=imagecreatefromgif($waterImage);break;
case2:$water_im=imagecreatefromjpeg($waterImage);break;
case3:$water_im=imagecreatefrompng($waterImage);break;
default:echo$formatMsg;return"";
}
}

//读取布景图片
if(!empty($groundImage)&&file_exists($groundImage))
{
$ground_info=getimagesize($groundImage);
$ground_w=$ground_info[0];//获得布景图片的宽
$ground_h=$ground_info[1];//获得布景图片的高

switch($ground_info[2])//获得布景图片的格局
{
case1:$ground_im=imagecreatefromgif($groundImage);break;
case2:$ground_im=imagecreatefromjpeg($groundImage);break;
case3:$ground_im=imagecreatefrompng($groundImage);break;
default:echo$formatMsg;return"";
}
}
else
{
echo$fun_r['synotdoimg'];
return"";
}

//水印方位
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);//获得运用TrueType字体的文本的规模
$w=$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)
{
case0://随机
$posX=rand(0,($ground_w-$w));
$posY=rand(0,($ground_h-$h));
break;
case1://1为顶端居左
$posX=0;
$posY=0;
break;
case2://2为顶端居中
$posX=($ground_w-$w)/2;
$posY=0;
break;
case3://3为顶端居右
$posX=$ground_w-$w;
$posY=0;
break;
case4://4为中部居左
$posX=0;
$posY=($ground_h-$h)/2;
break;
case5://5为中部居中
$posX=($ground_w-$w)/2;
$posY=($ground_h-$h)/2;
break;
case6://6为中部居右
$posX=$ground_w-$w;
$posY=($ground_h-$h)/2;
break;
case7://7为底端居左
$posX=0;
$posY=$ground_h-$h;
break;
case8://8为底端居中
$posX=($ground_w-$w)/2;
$posY=$ground_h-$h;
break;
case9://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;
}

//设定图画的混色形式
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);//复制水印到方针文件
}
else
{
imagecopymerge($ground_im,$water_im,$posX,$posY,0,0,$water_w,$water_h,$w_pct);//复制水印到方针文件
}
}
else//文字水印
{
if(!empty($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])//获得布景图片的格局
{
case1:imagegif($ground_im,$groundImage);break;
case2:imagejpeg($ground_im,$groundImage,$w_quality);break;
case3:imagepng($ground_im,$groundImage);break;
default:echo$formatMsg;return"";
}

//开释内存
if(isset($water_info))unset($water_info);
if(isset($water_im))imagedestroy($water_im);
unset($ground_info);
imagedestroy($ground_im);
}
?>

后台主动缩略图去黑边办法

体系参数-体系参数设置-图片设置-超出部分是否截取,去掉勾选

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原文地址:怎么去掉帝国CMS自动缩略图出现黑边框背景发布于2022-06-27 07:43:33

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