Support text watermark, image watermark
Support for watermark location random or fixed (ix Gongge)
Watermark Transparency Settings (both image watermark and text watermark support)
font, color, and size settings for text watermarks
Background transparency of picture watermark
Copy CodeThe code is as follows:
/**
* Add watermark class, support the text image watermark Transparency settings, watermark picture background transparent.
* Date: 2011-09-27
* Author: www.jb51.net
Use
* $obj = new Watermask ($imgFileName); Instantiating an Object
* $obj $waterType = 1; Type: 0 for text watermark, 1 for picture watermark
* $obj $transparent = 45; Watermark Transparency
* $obj $waterStr = ' www.jb51.net '; Watermark Text
* $obj $fontSize = 16; Text font size
* $obj $fontColor = array (255,0255); Watermark text color (RGB)
* $obj $fontFile = = ' Ahgbold.ttf '; Font files
* $obj->output (); Output watermark image file overlay into the input picture file
*/
Class watermask{
public $waterType = 1; Watermark Type: 0 for text watermark, 1 for picture watermark
Public $pos = 0; Watermark Location
Public $transparent = 45; Watermark Transparency
Public $waterStr = ' www.jb51.net '; Watermark Text
public $fontSize = 16; Text font size
Public $fontColor = Array (255,0,255); Watermark text color (RGB)
Public $fontFile = ' Ahgbold.ttf '; Font files
Public $waterImg = ' logo.png '; Watermark Picture
Private $srcImg = '; Picture to add a watermark
Private $im = '; Picture handle
Private $water _im = "; Watermark Picture Handle
Private $SRCIMG _info = "; Picture information
Private $WATERIMG _info = "; Watermark Picture Information
Private $str _w = "; Watermark Text Width
Private $str _h = "; Watermark Text Height
Private $x = '; Watermark X Coordinate
Private $y = '; Watermark y-coordinate
function __construct ($img) {//destructor
$this->srcimg = file_exists ($img)? $img: Die (' ". $img. '" Source file does not exist!) ');
}
Private Function Imginfo () {//Get information about the picture that needs to be added to the watermark and load the picture.
$this->srcimg_info = getimagesize ($this->srcimg);
Switch ($this->srcimg_info[2]) {
Case 3:
$this->im = imagecreatefrompng ($this->srcimg);
Break 1;
Case 2:
$this->im = imagecreatefromjpeg ($this->srcimg);
Break 1;
Case 1:
$this->im = imagecreatefromgif ($this->srcimg);
Break 1;
Default
Die (' Original picture ('. $this->srcimg. ') is not formatted, only PNG, JPEG, GIF are supported. ');
}
}
Private Function Waterimginfo () {//Get the information of the watermark picture and load the picture.
$this->waterimg_info = getimagesize ($this->waterimg);
Switch ($this->waterimg_info[2]) {
Case 3:
$this->water_im = imagecreatefrompng ($this->waterimg);
Break 1;
Case 2:
$this->water_im = imagecreatefromjpeg ($this->waterimg);
Break 1;
Case 1:
$this->water_im = imagecreatefromgif ($this->waterimg);
Break 1;
Default
Die (' Watermark picture ('. $this->srcimg. ') is not formatted, only PNG, JPEG, GIF are supported. ');
}
}
Private Function Waterpos () {//Watermark position algorithm
Switch ($this->pos) {
Case 0://Random position
$this->x = rand (0, $this->srcimg_info[0]-$this->waterimg_info[0]);
$this->y = rand (0, $this->srcimg_info[1]-$this->waterimg_info[1]);
Break 1;
Case 1://upper Left
$this->x = 0;
$this->y = 0;
Break 1;
Case 2://Kaminaka
$this->x = ($this->srcimg_info[0]-$this->waterimg_info[0])/2;
$this->y = 0;
Break 1;
Case 3://upper Right
$this->x = $this->srcimg_info[0]-$this->waterimg_info[0];
$this->y = 0;
Break 1;
Case 4://Middle Left
$this->x = 0;
$this->y = ($this->srcimg_info[1]-$this->waterimg_info[1])/2;
Break 1;
Case 5://Middle
$this->x = ($this->srcimg_info[0]-$this->waterimg_info[0])/2;
$this->y = ($this->srcimg_info[1]-$this->waterimg_info[1])/2;
Break 1;
Case 6://Middle Right
$this->x = $this->srcimg_info[0]-$this->waterimg_info[0];
$this->y = ($this->srcimg_info[1]-$this->waterimg_info[1])/2;
Break 1;
Case 7://Lower Left
$this->x = 0;
$this->y = $this->srcimg_info[1]-$this->waterimg_info[1];
Break 1;
Case 8://Down
$this->x = ($this->srcimg_info[0]-$this->waterimg_info[0])/2;
$this->y = $this->srcimg_info[1]-$this->waterimg_info[1];
Break 1;
Default://Down Right
$this->x = $this->srcimg_info[0]-$this->waterimg_info[0];
$this->y = $this->srcimg_info[1]-$this->waterimg_info[1];
Break 1;
}
}
Private Function waterimg () {
if ($this->srcimg_info[0] <= $this->waterimg_info[0] | | $this->srcimg_info[1] <= $this->waterimg_ Info[1]) {
Die (' The watermark is bigger than the original! ');
}
$this->waterpos ();
$cut = Imagecreatetruecolor ($this->waterimg_info[0], $this->waterimg_info[1]);
Imagecopy ($cut, $this->im,0,0, $this->x, $this->y, $this->waterimg_info[0], $this->waterimg_info[1]) ;
$pct = $this->transparent;
Imagecopy ($cut, $this->water_im,0,0,0,0, $this->waterimg_info[0], $this->waterimg_info[1]);
Imagecopymerge ($this->im, $cut, $this->x, $this->y,0,0, $this->waterimg_info[0], $this->waterimg_ INFO[1], $pct);
}
Private Function Waterstr () {
$rect = Imagettfbbox ($this->fontsize,0, $this->fontfile, $this->waterstr);
$W = ABS ($rect [2]-$rect [6]);
$h = ABS ($rect [3]-$rect [7]);
$fontHeight = $this->fontsize;
$this->water_im = Imagecreatetruecolor ($w, $h);
Imagealphablending ($this->water_im,false);
Imagesavealpha ($this->water_im,true);
$white _alpha = Imagecolorallocatealpha ($this->water_im,255,255,255,127);
Imagefill ($this->water_im,0,0, $white _alpha);
$color = Imagecolorallocate ($this->water_im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor [2]);
Imagettftext ($this->water_im, $this->fontsize,0,0, $this->fontsize, $color, $this->fontfile, $this WATERSTR);
$this->waterimg_info = Array (0=> $w,1=> $h);
$this->waterimg ();
}
function output () {
$this->imginfo ();
if ($this->watertype = = 0) {
$this->waterstr ();
}else {
$this->waterimginfo ();
$this->waterimg ();
}
Switch ($this->srcimg_info[2]) {
Case 3:
Imagepng ($this->im, $this->srcimg);
Break 1;
Case 2:
Imagejpeg ($this->im, $this->srcimg);
Break 1;
Case 1:
Imagegif ($this->im, $this->srcimg);
Break 1;
Default
Die (' Add watermark failed! ');
Break
}
Imagedestroy ($this->im);
Imagedestroy ($this->water_im);
}
}
?>
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