Téléchargement - programmation d'experts

RewriteEngine On
RewriteRule ^images/(.+)$ /watermark.php?filename=$1 [L]

addhandler WaterMark jpg gif jpeg 
action WaterMark /Photos/WaterMark.php 

/* 
 DOSSIER COURANT 
  -> pour définir le nom de la watermark 
  -> pour afficher le contenu d'un array : var_dump(pathinfo($_SERVER['SCRIPT_FILENAME'])); 
*/ 

<a href="Photos/mon_image.png"><img src="Photos/miniatures/mon_image.png"/></a> 

addhandler WaterMark jpg gif jpeg 
action WaterMark /Photos/WaterMark.php 

<?php 
/* 
    WATERMARK_TYPE 
        Type de watermark          
        Valeurs: 'text' | 'image' 

    WATERMARK_ALIGN_H 
        Alignment horizontal          
        Valeurs: 'left' | 'right' | 'center' 

    WATERMARK_ALIGN_V 
        Alignment vertical         
        Valeurs: 'top' | 'bottom' | 'center' 
         
    WATERMARK_MARGIN 
        Excentrage à partir du bord. 
        Valeurs: (en pixels) 
*/ 

    define('WATERMARK_TYPE', 'text');  
    define('WATERMARK_ALIGN_H', 'right');  
    define('WATERMARK_ALIGN_V', 'bottom');  
    define('WATERMARK_MARGIN', '5');  

/* 
    WATERMARK_IMAGE_FILE 
        Chemin vers le fichier image employé comme watermark 
        Valeur possible (chemin absolu ou relatif). 

    WATERMARK_OPACITY 
        Opacité de l'image. 
        Valeurs: entre 0 et 100 
*/ 

    define('WATERMARK_IMAGE_FILE', './wtmk.png'); 
    define('WATERMARK_OPACITY', '60');  

/* 
 DOSSIER COURANT 
  -> pour définir le nom de la watermark 
  NB : split() découpe une lien_ige en un tableau de mots 
  -> pour afficher le contenu d'un array : var_dump(pathinfo($_SERVER['SCRIPT_FILENAME'])); 
*/ 

 $wtmk_temp = 'Copyright "Mariage de Céline et Abdou" 03/2011, tous droits réservés. '; 
  
/* 
/* 
    WATERMARK_TEXT 
        Texte utilisé pour le copyright. 
             
    WATERMARK_TEXT_FONT 
        La police. 
        Valeurs: de 1 à 5 
     
    WATERMARK_TEXT_SHADOW 
        Police "black shadow". 
        Valeurs: 'yes' | 'no' 

    WATERMARK_TEXT_COLOR 
        La couleur de la police 
        Valeurs en décimal (ex: '255,255,255') ou  hexadécimal (ex: '#ff4567') 
*/ 

    define('WATERMARK_TEXT', $wtmk_temp);  
    define('WATERMARK_TEXT_FONT', '2');  
    define('WATERMARK_TEXT_SHADOW', 'yes');  
    define('WATERMARK_TEXT_COLOR', '#FFFFFF');  

// FIN DE LA CONFIGURATION 

    $original_image_file = $_SERVER['DOCUMENT_ROOT'] . $_SERVER['PATH_INFO']; 
    $original_image_info = getimagesize($original_image_file); 
    if ($original_image_info) { 
        $original_image_width = $original_image_info[0];//largeur 
        $original_image_height = $original_image_info[1];//hauteur 
        $original_image_imagetype = $original_image_info[2];//type de l'image 
        $original_image_mime_type = $original_image_info['mime'];//type mime 
    } 
    else { 
        header("Status: 500 Internal Server Error"); 
        if ($_SERVER['REQUEST_METHOD'] != 'HEAD') { 
            header("Content-Type: text/plain"); 
            echo "WaterMark: Erreur lors de la lecture des propriétés des images de la galerie."; 
                        echo "Une ou plusieurs images sont tronquées par une signature d'entête.\n"; 
        } 
        exit; 
    } 

    if ($original_image_imagetype == IMAGETYPE_GIF) { 
        header("Content-Type: " . $original_image_mime_type); 
        readfile($original_image_file); 
        exit; 
    }  
    elseif ($original_image_imagetype == IMAGETYPE_JPEG) { 
        header("Content-Type: " . $original_image_mime_type); 
        $source_image = imagecreatefromjpeg($original_image_file); 
    }  
    elseif ($original_image_imagetype == IMAGETYPE_PNG) { 
        header("Content-Type: " . $original_image_mime_type); 
        $source_image = imagecreatefrompng($original_image_file); 
    } 
    else { 
        header("Status: 500 Internal Server Error"); 
        if ($_SERVER['REQUEST_METHOD'] != 'HEAD') { 
            header("Content-Type: text/plain"); 
            echo "WaterMark: Format d'image non supporté\n"; 
        } 
        exit; 
    } 

    if (WATERMARK_TYPE == 'image' && WATERMARK_IMAGE_FILE != ''  
    && file_exists(WATERMARK_IMAGE_FILE)) { 

        $watermark_image_file = realpath(WATERMARK_IMAGE_FILE); 

        $watermark_image_info = getimagesize($watermark_image_file); 
        if ($original_image_info) { 
            $watermark_image_width = $watermark_image_info[0]; 
            $watermark_image_height = $watermark_image_info[1]; 
            $watermark_image_imagetype = $watermark_image_info[2]; 
            $watermark_image_mime_type = $watermark_image_info['mime']; 
        } 
        else { 
            header("Status: 500 Internal Server Error"); 
            if ($_SERVER['REQUEST_METHOD'] != 'HEAD') { 
                header("Content-Type: text/plain"); 
                echo "WaterMark: Erreur lors de a lecture des propriétés de l'image à incruster."; 
                                echo "L'image est tronquée par une signature d'entête.\n"; 
            } 
            exit; 
        } 

        if ($watermark_image_imagetype == IMAGETYPE_JPEG) { 
            $watermark_image = imagecreatefromjpeg(WATERMARK_IMAGE_FILE); 
        }  
        elseif ($watermark_image_imagetype == IMAGETYPE_PNG) { 
            $watermark_image = imagecreatefrompng(WATERMARK_IMAGE_FILE); 
        } 

        if ($watermark_image) { 

            $watermark_y = WATERMARK_MARGIN; 
            if (WATERMARK_ALIGN_V == 'top') { 
                $watermark_y = WATERMARK_MARGIN; 
            }  
            elseif (WATERMARK_ALIGN_V == 'bottom') { 
                $watermark_y = $original_image_height - $watermark_image_height - WATERMARK_MARGIN; 
            }  
            elseif (WATERMARK_ALIGN_V == 'center') { 
                $watermark_y = (int)($original_image_height / 2 - $watermark_image_height / 2); 
            } 

            $watermark_x = WATERMARK_MARGIN;         
            if (WATERMARK_ALIGN_H == 'left') { 
                $watermark_x = WATERMARK_MARGIN; 
            }  
            elseif (WATERMARK_ALIGN_H == 'right') { 
                $watermark_x = $original_image_width - $watermark_image_width - WATERMARK_MARGIN; 
            }  
            elseif (WATERMARK_ALIGN_H == 'center') { 
                $watermark_x = (int)($original_image_width / 2 - $watermark_image_width / 2); 
            } 

            imagecopymerge( 
                $source_image,  
                $watermark_image,  
                $watermark_x, $watermark_y, 
                0, 0,  
                $watermark_image_width, $watermark_image_height, 
                WATERMARK_OPACITY 
            );     
        } 
    } 
    elseif (WATERMARK_TYPE == 'text' && WATERMARK_TEXT != '') { 

        $color = WATERMARK_TEXT_COLOR; 
        $red = hexdec(substr($color, 1, 2)); 
        $green = hexdec(substr($color, 3, 2)); 
        $blue = hexdec(substr($color, 5, 2));         
        $text_color = imagecolorallocate($source_image, $red, $green, $blue);  
        $shadow_color = imagecolorallocate($source_image, 0, 0, 0);  
        $text_height = imagefontheight(WATERMARK_TEXT_FONT); 
        $text_width = strlen(WATERMARK_TEXT) * imagefontwidth(WATERMARK_TEXT_FONT); 

        $watermark_y = WATERMARK_MARGIN; 
        if (WATERMARK_ALIGN_V == 'top') { 
            $watermark_y = WATERMARK_MARGIN; 
        } 
        elseif (WATERMARK_ALIGN_V == 'bottom') { 
            $watermark_y = $original_image_height - $text_height - WATERMARK_MARGIN; 
        } 
        elseif (WATERMARK_ALIGN_V == 'center') { 
            $watermark_y = (int)($original_image_height / 2 - $text_height / 2); 
          } 

        $watermark_x = WATERMARK_MARGIN; 
        if (WATERMARK_ALIGN_H == 'left') { 
            $watermark_x = WATERMARK_MARGIN; 
        } 
        elseif (WATERMARK_ALIGN_H == 'right') { 
            $watermark_x = $original_image_width - $text_width - WATERMARK_MARGIN; 
        } 
        elseif (WATERMARK_ALIGN_H == 'center') { 
            $watermark_x = (int)($original_image_width / 2 - $text_width / 2); 
        } 

        if (WATERMARK_TEXT_SHADOW == 'yes') { 
            imagestring( 
                $source_image,  
                WATERMARK_TEXT_FONT,  
                $watermark_x + 1, $watermark_y + 1,  
                WATERMARK_TEXT,  
                $shadow_color 
            ); 
        } 
        imagestring( 
            $source_image,  
            WATERMARK_TEXT_FONT,  
            $watermark_x, $watermark_y, 
            WATERMARK_TEXT, 
            $text_color 
        ); 

    } 
    else { 
        header("Status: 500 Internal Server Error"); 
        if ($_SERVER['REQUEST_METHOD'] != 'HEAD') { 
            header("Content-Type: text/plain");                 
            echo "WaterMark: Erreur de configuration\n"; 
        } 
        exit; 
    } 

    if ($original_image_imagetype == IMAGETYPE_JPEG) { 
        imagejpeg($source_image,null,100); 
    } 
    elseif ($original_image_format == IMAGETYPE_PNG) { 
        imagepng($source_image,null,100); 
    }   
?>