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File: img.class.php

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  Classes of Silvio Rainoldi  >  Add mark at images  >  img.class.php  >  Download  
File: img.class.php
Role: Class source
Content type: text/plain
Description: add watermark and resize images
Class: Add mark at images
Resize and apply watermark to images
Author: By
Last change: $this->logo = $this->createImgage($logo);
to
$this->logo = $this->createImage($logo);
Date: 6 years ago
Size: 4,960 bytes
 

Contents

Class file image Download
<?php
 
/*
    iaTermark
    Created by Silvio Rainoldi
    www.ianaz.ch
 */
class img
{
    var
$thumb_w = 172; // larghezza thumb
   
var $thumb_h = 130; // altezza thumb
   
var $max_w = 720; // larghezza max
   
var $max_h = 540; // altezza max
   
var $pos_x = "RIGHT"; // posizione logo
   
var $pos_y = "BOTTOM"; // posizione logo
   
var $img_folder = ""; // cartella immagine grande
   
var $thumb_folder = ""; // cartella immagine thumb
   
var $saveBIG = 1; //salvare immagine grande
   
var $saveTHUMB = 1; //salvare thumb
   
var $name = ""; //nome immagine senza estensione

   
function AddLogo($image, $logo = NULL)
    {
       
$this->im = $this->createImage($image);
       
$this->im_width = imagesx($this->im);
       
$this->im_height = imagesy($this->im);
       
$this->wt_x = $this->calc_pos_x($this->pos_x);
       
$this->wt_y = $this->calc_pos_y($this->pos_y);
       
$this->new_image = $this->resizeImg();
       
       
$this->resizeForThumb();
        if(
$logo != NULL)
        {
           
$this->createTheLogo($logo);
        }
        if(
$this->name==""){
           
$this->name = substr($image, 0 , strrpos($image, "."));
        }
        if(
$this->saveBIG == 1)
        {
           
imagejpeg($this->new_image, $this->img_folder.$this->name."_big.jpg");
        }
        if(
$this->saveTHUMB == 1)
        {
           
imagejpeg($this->thumb, $this->thumb_folder.$this->name."_small.jpg");
        }
       
    }
   
    function
createImage($image){
       
$type = strtolower(substr($image, strrpos($image, "."), strlen($image)-strrpos($image, ".")));
        if(
$type==".jpeg" || $type==".jpg"){
            return
imagecreatefromjpeg($image);
        }elseif(
$type==".gif"){
            return
imagecreatefromgif($image);
        }elseif(
$type==".png"){
            return
imagecreatefrompng($image);
        }else{
            die(
"Immagine non valida");
        }
    }
   
    function
createTheLogo($logo)
    {
       
$this->logo = $this->createImage($logo);
       
$this->logo_width = imagesx($this->logo);
       
$this->logo_height = imagesy($this->logo);
       
$this->wt_x = $this->calc_pos_x($this->pos_x);
       
$this->wt_y = $this->calc_pos_y($this->pos_y);
       
imagecopy($this->new_image, $this->logo, $this->wt_x, $this->wt_y, 0, 0, $this->logo_width, $this->logo_height);
    }
       
       
    function
resizeImg()
    {

        if(
$this->im_width > $this->max_w && $this->im_height < $this->max_h)
        {
       
           
$rapporto = $this->max_w / $this->im_width;
           
           
$this->new_im_w = $this->im_width * $rapporto;
           
$this->new_im_h = $this->im_height * $rapporto;
           
        }
       
        else if(
$this->im_width < $this->max_w && $this->im_height > $this->max_h)
        {
       
           
$rapporto = $this->max_h / $this->im_height;
           
           
$this->new_im_w = $this->im_width * $rapporto;
           
$this->new_im_h = $this->im_height * $rapporto;
       
        }
        else if(
$this->im_width > $this->max_w && $this->im_height > $this->max_h)
        {
       
           
$rapporto_1 = $this->max_w / $this->im_width;
           
$rapporto_2 = $this->max_h / $this->im_height;
                if(
$rapporto_1 > $rapporto_2)
                {
                   
$rapporto = $rapporto_2;
                }
                else
                {
                   
$rapporto = $rapporto_1;
                }
                   
                   
$this->new_im_w = $this->im_width * $rapporto;
                   
$this->new_im_h = $this->im_height * $rapporto;
       
        }
       
        else
        {
           
$this->new_im_w = $this->im_width;
           
$this->new_im_h = $this->im_height;
        }
       
       
$this->new_image = imagecreatetruecolor($this->new_im_w, $this->new_im_h);
       
imagecopyresized($this->new_image, $this->im, 0, 0, 0, 0, $this->new_im_w, $this->new_im_h, $this->im_width, $this->im_height);
       
        return
$this->new_image;

    }
   
    function
resizeForThumb(){
       
$thumb_w = $this->thumb_w;
       
$thumb_h = $this->thumb_h;
        if(
$this->im_width > $this->im_height)
        {
           
$rapporto = $this->im_height / $this->im_width;
           
$thumb_h = $this->thumb_h * $rapporto;
           
$thumb_w = $this->thumb_w * $rapporto;
        }
        else if(
$this->im_width < $this->im_height)
        {
           
$rapporto = $this->im_width / $this->im_height;
           
$thumb_w = $this->thumb_w * $rapporto;
        }
        else
        {
           
$thumb_w = $this->thumb_w;
           
$thumb_h = $this->thumb_h;
        }
       
$this->thumb = imagecreatetruecolor($thumb_w, $thumb_h);
       
imagecopyresized($this->thumb, $this->new_image, 0, 0, 0, 0, $thumb_w, $thumb_h, $this->new_im_w, $this->new_im_h);
    }
       
    function
calc_pos_x($position_x)
        {
       
$x = 0;
        switch(
$position_x)
        {
            case
'LEFT':
               
$x = 0;
                break;
            case
'CENTER':
               
$x = @$this->new_im_w / 2 - @$this->logo_width / 2;
                break;
            case
'RIGHT':
               
$x = @$this->new_im_w - @$this->logo_width;
                break;
            default:
               
$x = 0;
        }
            return
$x;
       
        }
       
        function
calc_pos_y($position_y)
        {
       
$y = 0;
        switch(
$position_y)
        {
            case
'TOP':
               
$y = 0;
                break;
            case
'MIDDLE':
               
$y = @$this->new_im_h / 2 - @$this->logo_height / 2;
                break;
            case
'BOTTOM':
               
$y = @$this->new_im_h - @$this->logo_height;
                break;
            default:
               
$y = 0;
        }
    return
$y;
       
        }
       
}
   
?>