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<?php
// watermark class
// Mario Guarinoni 12/06/2006
class watermark
{
var $path;
var $file;
var $font;
var $text;
var $factor=70;
var $fontsize=1;
var $width;
var $height;
var $pos;
var $source;
var $ext;
var $photo;
var $existephoto;
var $force=false;
var $browser=true;
var $_FONTSIZE;
var $outfile;
function watermark($path,$file,$font,$text,$factor,$_FONTSIZE=8,$force=false,$browser=true){
$this->path=$path;
$this->file=$file;
$this->font=$font;
$this->text=$text;
$this->factor=$factor;
$this->width=$width;
$this->lenght=$lenght;
$this->force=$force;
$this->browser=$browser;
$this->_FONTSIZE=$_FONTSIZE;
$this->outfile='';
list( $this->width, $this->height ) = getimagesize($this->file); // Sizes
//Calculate relation between photo and watermark
$this->calculate_rel();
// load original photo
$this->load_photo();
if($this->force||!$this->existephoto){
// Auxiliar Images
$this->photo = imagecreatetruecolor( $this->width, $this->height );
$mark = imagecreatetruecolor( $this->width, $this->height );
// Create some colors
$white = imagecolorallocate($this->photo, 255, 255, 255);
$gray = imagecolorallocate($this->photo, 40, 40, 40);
$black = imagecolorallocate($this->photo, 0, 0, 0);
// Calculate the text pos on the photo (bottom right)
$this->calculate_pos();
// Copy to other free memory
imagecopy( $this->photo, $this->source, 0, 0, 0, 0, $this->width, $this->height );
// Copy to other free memory
imagecopy( $mark, $this->source, 0, 0, 0, 0, $this->width, $this->height );
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1]+2, $this->pos[y1]+2, $black, $this->font, $this->text);
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1], $this->pos[y1]-1, $gray, $this->font, $this->text);
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1]-1, $this->pos[y1], $gray, $this->font, $this->text);
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1]-1, $this->pos[y1]-1, $gray, $this->font, $this->text);
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1], $this->pos[y1]+1, $gray, $this->font, $this->text);
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1]+1, $this->pos[y1]+1, $gray, $this->font, $this->text);
// add shadow
imagettftext($mark, $this->fontsize, 0, $this->pos[x1]+1, $this->pos[y1], $gray, $this->font, $this->text);
// add text
imagettftext($mark, $this->fontsize, 0, $this->pos[x1], $this->pos[y1], $white, $this->font, $this->text);
imagecopymerge( $this->photo, $mark, 0, 0, 0, 0, $this->width, $this->height, 80 );
// save
$this->save_photo();
// free memory
imagedestroy( $this->photo );
imagedestroy( $mark );
}else{
$this->outfile=$this->path.$this->file;
}
// free memory
imagedestroy( $this->source );
}
function load_photo(){
// load original photo
$this->ext=strrchr($this->file,".");
switch($this->ext){
case ".jpeg":
case ".jpg":
$this->source = imagecreatefromjpeg( $this->file );
break;
case ".gif":
$this->source = imagecreatefromgif( $this->file );
break;
case ".png":
$this->source = imagecreatefrompng( $this->file );
break;
}
if(strrpos($this->file,"/"))
$this->file=strrchr($this->file,"/");
$this->existephoto=(is_file($this->path.$this->file));
}
function save_photo(){
if($this->browser) {
header('Content-type: image/'.($this->ext == '.jpg' ? 'jpeg' : substr(1,$this->ext)));
header('Content-Transfer-Encoding: binary');
header('Content-Disposition: inline; filename='.basename($this->file));
header("Cache-control: private");
}
imagesetthickness($this->photo,1);
switch($this->ext){
case ".jpeg":
case ".jpg":
imagejpeg($this->photo, $this->browser ? '' : "$this->path$this->file", 80 ) or die ( 'You do not have permission to write in this folder!' );
break;
case ".gif":
imagegif($this->photo, $this->browser ? '' : "$this->path$this->file" ) or die ( 'You do not have permission to write in this folder!' );
break;
case ".png":
imagepng($this->photo, $this->browser ? '' : "$this->path$this->file" ) or die ( 'You do not have permission to write in this folder!' );
break;
}
$this->outfile=$this->path.$this->file;
$this->file=strrchr("/",$this->file);
}
function calculate_pos(){
$this->pos[x1]=$this->width-abs($this->size[2]+8);
$this->pos[y1]=$this->height-abs($this->size[3]+8);
$this->pos[x2]=$this->width-3;
$this->pos[y2]=$this->height-3;
}
function calculate_rel(){
if ($this->factor!=""){
$rel=0;
// Prove size font until the factor
while($rel < $this->factor){
$this->size = imageTTFBBox($this->fontsize, 0, $this->font, $this->text);
$rel=(abs($this->size[2])*100/$this->width);
$this->fontsize++;
}
if ($this->fontsize!=1) $this->fontsize--;
}else{
$this->fontsize=$this->_FONTSIZE;
$this->size = imageTTFBBox($this->fontsize, 0, $this->font, $this->text);
}
}
}