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Title : Advanced Image WaterMarker
Categories : PHP, PHP Classes, GD image library, Graphics, Object Oriented Click here to Update Your Picture
Hasin Hayder
Date : May 10th 2005
Grade : 4 of 5 (graded 9 times)
Viewed : 8359
File : 4165.zip
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This is an advanced waterMarker class for PHP. With this, you can watermark your images with many features. It supports the followings

1. Angle of Text
2. Shadowed Text
3. Smooth Text(Antialiasing), Sharp Text(Non-Antialiasing)
4. Any Image Format, you have no extra overload
5. Any FontSize
6. Any TTF Font
7. Customizable Horizontal and Vertical Spacing between two successive watermark
8. Supports Direct Watermarking over http protocol and also relative or absolute path of image file. I mean if u use this type code http://urdomain.com/imageMarker.php?code=http://anotherdomain/image.jpg it will also work.

This image watermarker is fully commented. Its will really be helpful for many of you.

Thanks
Hasin Hayder
http://hasin.phpxperts.com

ImageMarker.php
<?
/*****************************************
* class name : watermarker
* developed by : hasin hayder
* date : 050509 10PM (9th may, 2005 , 10 PM)
* dependency : gd library and freetype
* version : 2.00
*****************************************/

class waterMarker
{
    var
$imagePath; //valid absolute path to image file
   
var $waterMarkText = "copyrighted"; //the text to draw as watermark
   
var $signature = "version 1.0"; //just the class file signature
   
var $font = "arial.ttf"; //font file to use for drawing text. need absolute path
   
var $size = 10; //font size
   
var $angle = 45; //angle to draw watermark text
   
var $hSpacing = 120; //horizontal spacing betweeen two sucessive watermark text
   
var $vSpacing = 120; //vertical spacing betweeen two sucessive watermark text
   
var $imageResource; //to store the image resource after completion of watermarking
   
var $imageType="jpg"; //this could be either of png, jpg, jpeg, bmp, or gif (if gif then output will be in png)
   
var $shadow = false; //if set to true then a shadow will be drawn under every watermark text
   
var $antialiased = true; //if set to true then watermark text will be drwan anti aliased. this is recommended
   
   
function mark()
    {
   
/****************************************************************
    * this function draw the watermark over the image
    * parameteres : none
    * return value : image resource after completion of watermarking
    ****************************************************************/
               
list($width, $height, $type, $attr) = getimagesize($this->imagePath); //get basic properties of the image file

       
switch ($this->imageType)
        {
       
/************************************************************************
        * this portion uses PHP's advanced variable function facility
        * and determine generalized function to create and deply images.
        * $createProc is a generalized reference of image creation function
                * $outputProc is a generalized reference of image deploying functionm
        ************************************************************************/
               
case "png":
               
$createProc = "imagecreatefrompng";
               
$outputProc = "imagepng";
                break;
                case
"gif";
               
$createProc = "imagecreatefromgif";
                       
$outputProc = "imagepng";
                        break;
                case
"bmp";
               
$createProc = "imagecreatefrombmp";
                       
$outputProc = "imagebmp";
                        break;
                case
"jpeg":
            case
"jpg":
               
$createProc = "imagecreatefromjpeg";
                       
$outputProc = "imagejpeg";
                        break;
                       
        }
       
       
$im = $createProc($this->imagePath); //create the image with generalized image create function

       
$grey = imagecolorallocate($im, 180, 180, 180); //color for watermark text
       
$shadowColor = imagecolorallocate($im, 130, 130, 130); //color for shadow text

       
if (!$this->antialiased)
       
/******************************************************************************
        * if its need to draw non-antialiased text then just set the color = -1*color
        * then the text drawn with this color will be sharp (non-antialiased)
        ******************************************************************************/
       
{
           
$grey *= -1; //grey = grey * -1
           
$shadowColor *= -1; //shadowColor = shadowColor * -1
       
}
       
       
           
            for (
$x=20; $x<$width; $x+=$this->hSpacing)
           
/*******************************************
            * now draw water mark text and shadow text
            *******************************************/
           
{
                    for (
$y=20; $y<$width; $y+=$this->vSpacing)
                    {
                            if (
$this->shadow) imagettftext($im, $this->size, $this->angle, $x+1, $y+1, $shadowColor, $this->font, $this->waterMarkText); //draw shadow text over image
                           
imagettftext($im, $this->size, $this->angle, $x, $y, $grey, $this->font, $this->waterMarkText); //draw text over image
                   
}
            }
           
$this->imageResource= $outputProc($im); //deploy the image with generalized image deploy function
           
   
}
}
?>


Ussage
<?php
include_once("imageMarker.php");
/*******************************************
* usage of this waterMark class
*******************************************/
$imagePath = $_REQUEST['code'];
//echo $imagePath;
$imark = new waterMarker();
$imark->waterMarkText = "bdtemplates";
$imark->imagePath = $imagePath;
$imark->font="arial.ttf";
$imark->size = 14;
$imark->hSpacing=110;
$imark->vSpacing=110;
$imark->shadow=true;
$imark->angle = 45;
header("Content-type: image/jpeg");
$imark->mark(); //draw watermark
//echo $imark->imageResource;
echo $imark->imageResource;
?>



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