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帝国CMS缩略图函数改进(GD库改进)

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;
$srcY=0;
}
}else{
if($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, $new_height);
imagecopyresampled($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);
}
?>

未经允许,不得转载本站任何文章:王振东 » 帝国CMS缩略图函数改进(GD库改进)

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