Copy code The code is as follows:
/**
* Basic image processing, used to complete image indentation and watermark addition
* When the watermark image exceeds the target image size, the watermark image can automatically adapt to the target image and shrink
* The watermark image can be set to match the background Merger degree
*/
/*
Usage:
Automatic cropping:
The program will follow the shape of the picture Size: Cut the largest square from the middle and shrink it according to the target size
$t--->setSrcImg("img/test.jpg");
$t->setCutType( 1);//This sentence is OK
$t->setDstImg("tmp/new_test.jpg");
$t->createImg(60,60);
Manual cutting:
The program will take the image from the source image according to the specified position
$t->setSrcImg("img/test.jpg");
$t->setCutType (2);//Indicate manual cutting
$t->setSrcCutPosition(100, 100);//Coordinates of the starting point of the source image
$t->setRectangleCut(300, 200);//Cut Cut size
$t->setDstImg("tmp/new_test.jpg");
$t->createImg(300,200);
*/
class ThumbHandler
{
var $dst_img;// Target file = 100;// Image generation quality
var $img_display_quality = 80;// Image display quality, the default is 75
var $img_scale = 0;// Image scaling ratio
var $src_w = 0;/ / Original image width
var $src_h = 0;// Original image height
var $dst_w = 0;// New image total width
var $dst_h = 0;// New image total height
var $fill_w;// width of filled graphics
var $fill_h;// height of filled graphics
var $copy_w;// width of copied graphics
var $copy_h;// height of copied graphics
var $src_x = 0;// The starting abscissa of the original image drawing
var $src_y = 0;// The starting ordinate of the original image drawing
var $start_x;// The starting abscissa of the new image drawing
var $start_y;// The vertical coordinate of the starting point for drawing a new picture
var $mask_pos_y = 0;// vertical coordinate of the watermark
var $mask_offset_x = 5;// horizontal offset of the watermark
var $mask_offset_y = 5;// vertical offset of the watermark
var $font_w ;//Watermark font width
var $font_h;// Watermark font height
var $mask_w;// Watermark width
var $mask_h;// Watermark height
var $mask_font_color = "#ffffff ";// Watermark text color
var $mask_font = 2;// Watermark font
var $font_size;// Size
var $mask_position = 0;// Watermark position
var $mask_img_pct = 50;// The degree of image merging, the larger the value, the lower the merging process.
var $mask_txt_pct = 50;// The degree of text merging, the smaller the value, the lower the merging process.
var $img_border_size = 0;// Image border size
var $img_border_color;// Image border color
var $_flip_x=0;// Number of horizontal flips
var $_flip_y=0;// Number of vertical flips
var $cut_type=0;// Cut type
var $img_type;//File type
// File type definition, and points out the function for outputting images => array("output"=>"imagegif"),
"png" => array("output"=>"imagepng"),
"wbmp" => array(" output"=>"image2wbmp"), function ThumbHandler()
{ $this->mask_font_color = "#ffffff";
$this->font = 2;
$this->font_size = 12;
} /* *
* Constructor
*/
function getImgHeight($src)
{
return imagesy($src); function setSrcImg($src_img, $img_type=null)
if(!empty($img_type))
{ $this->img_type = $img_type;
else
{ = $this->_getImgType($src_img);
} }
$this->_checkValid($this->img_type);
// file_get_contents function requires php version >4.3.0
}
else
{
$handle = fopen ($src_img, "r");
while (!feof ($handle))
{
$src .= fgets($fd, 4096);
}
fclose ($handle);
}
if(empty($src))
{
die("图片源为空");
}
$this->h_src = @ImageCreateFromString($src);
$this->src_w = $this->getImgWidth($this->h_src);
$this->src_h = $this->getImgHeight($this->h_src);
}
/** */
function setDstImg($dst_img)
{
$arr = explode('/',$dst_img);
$last = array_pop($arr);
$path = implode('/',$arr);
$this->_mkdirs($path);
$this->dst_img = $dst_img;
}
/** */
function setImgDisplayQuality($n)
{
$this->img_display_quality = (int)$n;
}
/** */
function setImgCreateQuality($n)
{
$this->img_create_quality = (int)$n;
}
/** $color Watermark font color
*/
function setMaskWord($word)
{
$this->mask_word .= $word;
}
/** */
function setMaskFontColor($color="#ffffff")
{
$this->mask_font_color = $color;
}
/** */
function setMaskFont($font=2)
{
if(!is_numeric($font) && !file_exists($font))
{
die("字体文件不存在");
}
$this->font = $font;
}
/**
* Set the text font size, only valid for truetype fonts
*/
function setMaskFontSize($size = "12")
{
$this->font_size = $size;
}
/** */
function setMaskImg($img)
{
$this->mask_img = $img;
}
/** */
function setMaskOffsetX($x)
{
$this->mask_offset_x = (int)$x;
}
/** */
function setMaskOffsetY($y)
{
$this->mask_offset_y = (int)$y;
}
/**
* Specify the watermark position
* * @param integer $position position, 1: upper left, 2: lower left, 3: upper right, 0/4: lower right
*/
function setMaskPosition($position=0)
{
$this->mask_position = (int)$position;
}
/** */
function setMaskImgPct($n)
{
$this->mask_img_pct = (int)$n;
}
/** */
function setMaskTxtPct($n)
{
$this->mask_txt_pct = (int)$n;
}
/** */
function setDstImgBorder($size=1, $color="#000000")
{
$this->img_border_size = (int)$size;
$this->img_border_color = $color;
}
/** */
function flipH()
{
$this->_flip_x++;
}
/**
* Vertical flip
*/
function flipV()
{
$this->_flip_y++;
}
/** */
function setCutType($type)
{
$this->cut_type = (int)$type;
}
/** */
function setRectangleCut($width, $height)
{
$this->fill_w = (int)$width;
$this->fill_h = (int)$height;
}
/** */
function setSrcCutPosition($x, $y)
{
$this->src_x = (int)$x;
$this->src_y = (int)$y;
}
/**
* Create image, main function * @param integer $a When the second parameter is missing, this parameter will be used as a percentage,
* Otherwise, it will be used as the width value
* @param integer $b The height of the image after scaling
*/
function createImg($a, $b=null)
{ $num = func_num_args();
if(1 == $num) die("The image scaling ratio must not be less than 1");
🎜> if(2 == $num)
🎜> die("Target width cannot is 0"); _setNewImgSize($w, $h); H($this- >h_src); gt;h_src) ;
destroy($this-> h_src) && imagedestroy($this->h_dst))
{
Return true;
}
else
{
Return false;
}
}
/**
* To generate a watermark, two methods are called to generate watermark text and watermark image.
*/
function _createMask()
{
if($this->mask_word)
{
// 获取字体信息
$this->_setFontInfo();
if($this->_isFull())
{
die("水印文字过大");
}
else
{
$this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
$white = ImageColorAllocate($this->h_dst,255,255,255);
imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
$this->_drawBorder();
imagecopyresampled( $this->h_dst, $this->h_src,
$this->start_x, $this->start_y,
$this->src_x, $this->src_y,
$this->fill_w, $this->fill_h,
$this->copy_w, $this->copy_h);
$this->_createMaskWord($this->h_dst);
}
}
if($this->mask_img)
{ $this->_loadMaskImg();//When loading, get the width and height
if( $this- > 🎜> $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h); >h_dst,0, 0,$this->dst_w,$this->dst_h,$white);// Fill background color this->h_src, ->src_x, $this->src_y, $this->start_y,
else
{
// 创建新图并拷贝
$this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
$white = ImageColorAllocate($this->h_dst,255,255,255);
imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
$this->_drawBorder();
imagecopyresampled( $this->h_dst, $this->h_src,
$this->start_x, $this->start_y,
$this->src_x, $this->src_y,
$this->fill_w, $this->fill_h,
$this->copy_w, $this->copy_h);
$this->_createMaskImg($this->h_dst);
}
}
if(empty($this->mask_word) && empty($this->mask_img))
{
$this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
$white = ImageColorAllocate($this->h_dst,255,255,255);
imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
$this->_drawBorder();
imagecopyresampled( $this->h_dst, $this->h_src,
$this->start_x, $this->start_y,
$this->src_x, $this->src_y,
$this->fill_w, $this->fill_h,
$this->copy_w, $this->copy_h);
}
}
/** */
function _drawBorder()
{
if(!empty($this->img_border_size))
{
$c = $this->_parseColor($this->img_border_color);
$color = ImageColorAllocate($this->h_src,$c[0], $c[1], $c[2]);
imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$color);// 填充背景色
}
}
/**
* Generate watermark text
*/
function _createMaskWord($src)
{
$this->_countMaskPos();
$this->_checkMaskValid();
$c = $this->_parseColor($this->mask_font_color);
$color = imagecolorallocatealpha($src, $c[0], $c[1], $c[2], $this->mask_txt_pct);
if(is_numeric($this->font))
{
imagestring($src,
$this->font,
$this->mask_pos_x, $this->mask_pos_y,
$this->mask_word,
$color);
}
else
{
imagettftext($src,
$this->font_size, 0,
$this->mask_pos_x, $this->mask_pos_y,
$color,
$this->font,
$this->mask_word);
}
}
/**
* Generate watermark image
*/
function _createMaskImg($src)
{
$this->_countMaskPos();
$this->_checkMaskValid();
imagecopymerge($src,
$this->h_mask,
$this->mask_pos_x ,$this->mask_pos_y,
0, 0,
$this->mask_w, $this->mask_h,
$this->mask_img_pct);
imagedestroy($this->h_mask);
}
/**
* Load watermark image
*/
function _loadMaskImg()
{
$mask_type = $this->_getImgType($this->mask_img);
$this->_checkValid($mask_type);
// file_get_contents函数要求php版本>4.3.0
$src = '';
if(function_exists("file_get_contents"))
{
$src = file_get_contents($this->mask_img);
}
else
{
$handle = fopen ($this->mask_img, "r");
while (!feof ($handle))
{
$src .= fgets($fd, 4096);
}
fclose ($handle);
}
if(empty($this->mask_img))
{
die("水印图片为空");
}
$this->h_mask = ImageCreateFromString($src);
$this->mask_w = $this->getImgWidth($this->h_mask);
$this->mask_h = $this->getImgHeight($this->h_mask);
}
/** */
function _output()
{
$img_type = $this->img_type;
$func_name = $this->all_type[$img_type]['output'];
if(function_exists($func_name))
{
// 判断浏览器,若是IE就不发送头
if(isset($_SERVER['HTTP_USER_AGENT']))
{
$ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
if(!preg_match('/^.*MSIE.*)$/i',$ua))
{
header("Content-type:$img_type");
}
}
$func_name($this->h_dst, $this->dst_img, $this->img_display_quality);
}
else
{
Return false;
}
}
/**
* 分析颜色
*
* @param string $color 十六进制颜色
*/
function _parseColor($color)
{
$arr = array();
for($ii=1; $ii_isFull())
{
switch($this->mask_position)
{
case 1:
// 左上
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 2:
// 左下
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
case 3:
// 右上
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 4:
// 右下
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
default:
// 默认将水印放到右下,偏移指定像素
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
}
}
else
{
switch($this->mask_position)
{
case 1:
// 左上
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 2:
// 左下
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
case 3:
// 右上
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 4:
// 右下
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
default:
// 默认将水印放到右下,偏移指定像素
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
}
}
}
/**
* Set font information
*/
function _setFontInfo()
{
if(is_numeric($this->font))
{
$this->font_w = imagefontwidth($this->font);
$this->font_h = imagefontheight($this->font);
// 计算水印字体所占宽高
$word_length = strlen($this->mask_word);
$this->mask_w = $this->font_w*$word_length;
$this->mask_h = $this->font_h;
}
else
{
$arr = imagettfbbox ($this->font_size,0, $this->font,$this->mask_word);
$this->mask_w = abs($arr[0] - $arr[2]);
$this->mask_h = abs($arr[7] - $arr[1]);
}
}
/**
* Set new image size
* * @param integer $img_w Target width
* @param integer $img_h Target height
*/
function _setNewImgSize($img_w, $img_h=null)
{
$num = func_num_args();
if(1 == $num)
{
$this->img_scale = $img_w;// 宽度作为比例
$this->fill_w = round($this->src_w * $this->img_scale / 100) - $this->img_border_size*2;
$this->fill_h = round($this->src_h * $this->img_scale / 100) - $this->img_border_size*2;
// 源文件起始坐标
$this->src_x = 0;
$this->src_y = 0;
$this->copy_w = $this->src_w;
$this->copy_h = $this->src_h;
// 目标尺寸
$this->dst_w = $this->fill_w + $this->img_border_size*2;
$this->dst_h = $this->fill_h + $this->img_border_size*2;
}
if(2 == $num)
{ $fill_w = (int)$img_w - $this->img_border_size*2;
$fill_h = (int)$img_h -$ this-& gt; img_border_size*2;
if ($ fill_w & lt; 0 || $ fill_h & lt; 0)
{
DIE ("The picture frame is too large, it has exceeded the width of the picture" " );
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
