Location: PHPKode > projects > Wallpaper Script > Wallpapers_Script/Wallpapers_Script/scripts/class.upload.php
<?php

class upload {

    
    /**
     * Uploaded file name
     *
     * @access public
     * @var string
     */
    var $file_src_name;

    /**
     * Uploaded file name body (i.e. without extension)
     *
     * @access public
     * @var string
     */
    var $file_src_name_body;

    /**
     * Uploaded file name extension
     *
     * @access public
     * @var string
     */
    var $file_src_name_ext;

    /**
     * Uploaded file MIME type
     *
     * @access public
     * @var string
     */
    var $file_src_mime;

    /**
     * Uploaded file size, in bytes
     *
     * @access public
     * @var double
     */
    var $file_src_size;

    /**
     * Holds eventual PHP error code from $_FILES
     *
     * @access public
     * @var string
     */
    var $file_src_error;

    /**
     * Uloaded file name, including server path
     *
     * @access private
     * @var string
     */
    var $file_src_pathname;

    /**
     * Uloaded file name temporary copy
     *
     * @access private
     * @var string
     */
    var $file_src_temp;

    /**
     * Destination file name
     *
     * @access private
     * @var string
     */
    var $file_dst_path;

    /**
     * Destination file name
     *
     * @access public
     * @var string
     */
    var $file_dst_name;

    /**
     * Destination file name body (i.e. without extension)
     *
     * @access public
     * @var string
     */
    var $file_dst_name_body;

    /**
     * Destination file extension
     *
     * @access public
     * @var string
     */
    var $file_dst_name_ext;

    /**
     * Destination file name, including path
     *
     * @access private
     * @var string
     */
    var $file_dst_pathname;

    /**
     * Source image width
     *
     * @access private
     * @var integer
     */
    var $image_src_x;

    /**
     * Source image height
     *
     * @access private
     * @var integer
     */
    var $image_src_y;

    /**
     * Source image color depth
     *
     * @access private
     * @var integer
     */
    var $image_src_bits;

    /**
     * Number of pixels
     *
     * @access private
     * @var long
     */
    var $image_src_pixels;

    /**
     * Type of image (png, gif, jpg or bmp)
     *
     * @access private
     * @var string
     */
    var $image_src_type;

    /**
     * Destination image width
     *
     * @access private
     * @var integer
     */
    var $image_dst_x;

    /**
     * Destination image height
     *
     * @access private
     * @var integer
     */
    var $image_dst_y;

    /**
     * Supported image formats
     *
     * @access private
     * @var array
     */
    var $image_supported;

    /**
     * Flag to determine if the source file is an image
     *
     * @access private
     * @var boolean
     */
    var $file_is_image;

    /**
     * Flag set after instanciating the class
     *
     * Indicates if the file has been uploaded properly
     *
     * @access public
     * @var bool
     */
    var $uploaded;

    /**
     * Flag stopping PHP upload checks
     *
     * Indicates whether we instanciated the class with a filename, in which case
     * we will not check on the validity of the PHP *upload*
     *
     * This flag is automatically set to true when working on a local file
     *
     * Warning: for uploads, this flag MUST be set to false for security reason
     *
     * @access public
     * @var bool
     */
    var $no_upload_check;

    /**
     * Flag set after calling a process
     *
     * Indicates if the processing, and copy of the resulting file went OK
     *
     * @access public
     * @var bool
     */
    var $processed;

    /**
     * Holds eventual error message in plain english
     *
     * @access public
     * @var string
     */
    var $error;

    /**
     * Holds an HTML formatted log
     *
     * @access public
     * @var string
     */
    var $log;


    // overiddable processing variables
    
    
    /**
     * Set this variable to replace the name body (i.e. without extension)
     *
     * @access public
     * @var string
     */
    var $file_new_name_body;

    /**
     * Set this variable to add a string to the faile name body
     *
     * @access public
     * @var string
     */
    var $file_name_body_add;

    /**
     * Set this variable to change the file extension
     *
     * @access public
     * @var string
     */
    var $file_new_name_ext;

    /**
     * Set this variable to format the filename (spaces changed to _)
     *
     * @access public
     * @var boolean
     */
    var $file_safe_name;

    /**
     * Set this variable to false if you don't want to check the MIME against the allowed list
     *
     * This variable is set to true by default for security reason
     *
     * @access public
     * @var boolean
     */
    var $mime_check;

    /**
     * Set this variable to true if you want to check the MIME type against a mime_magic file
     *
     * This variable is set to false by default as many systems don't have mime_magic installed or properly set
     *
     * @access public
     * @var boolean
     */
    var $mime_magic_check;

    /**
     * Set this variable to false if you don't want to turn dangerous scripts into simple text files
     *
     * @access public
     * @var boolean
     */
    var $no_script;

    /**
     * Set this variable to true to allow automatic renaming of the file
     * if the file already exists
     *
     * Default value is true
     *
     * For instance, on uploading foo.ext,<br>
     * if foo.ext already exists, upload will be renamed foo_1.ext<br>
     * and if foo_1.ext already exists, upload will be renamed foo_2.ext<br>
     *
     * @access public
     * @var bool
     */
    var $file_auto_rename;

    /**
     * Set this variable to true to allow automatic creation of the destination 
     * directory if it is missing (works recursively)
     *
     * Default value is true
     *
     * @access public
     * @var bool
     */
    var $dir_auto_create;

    /**
     * Set this variable to true to allow automatic chmod of the destination 
     * directory if it is not writeable
     *
     * Default value is true
     *
     * @access public
     * @var bool
     */
    var $dir_auto_chmod;

    /**
     * Set this variable to the default chmod you want the class to use
     * when creating directories, or attempting to write in a directory
     *
     * Default value is 0777 (without quotes)
     *
     * @access public
     * @var bool
     */
    var $dir_chmod;

    /**
     * Set this variable tu true to allow overwriting of an existing file
     *
     * Default value is false, so no files will be overwritten
     *
     * @access public
     * @var bool
     */
    var $file_overwrite;

    /**
     * Set this variable to change the maximum size in bytes for an uploaded file
     *
     * Default value is the value <i>upload_max_filesize</i> from php.ini
     *
     * @access public
     * @var double
     */
    var $file_max_size;

    /**
     * Set this variable to true to resize the file if it is an image
     *
     * You will probably want to set {@link image_x} and {@link image_y}, and maybe one of the ratio variables
     *
     * Default value is false (no resizing)
     *
     * @access public
     * @var bool
     */
    var $image_resize;

    /**
     * Set this variable to convert the file if it is an image
     *
     * Possibles values are : ''; 'png'; 'jpeg'; 'gif'; 'bmp'
     *
     * Default value is '' (no conversion)<br>
     * If {@link resize} is true, {@link convert} will be set to the source file extension 
     *
     * @access public
     * @var string
     */
    var $image_convert;

    /**
     * Set this variable to the wanted (or maximum/minimum) width for the processed image, in pixels
     *
     * Default value is 150
     *
     * @access public
     * @var integer
     */
    var $image_x;

    /**
     * Set this variable to the wanted (or maximum/minimum) height for the processed image, in pixels
     *
     * Default value is 150
     *
     * @access public
     * @var integer
     */
    var $image_y;

    /**
     * Set this variable to keep the original size ratio to fit within {@link image_x} x {@link image_y}
     *
     * Default value is false
     *
     * @access public
     * @var bool
     */
    var $image_ratio;

    /**
     * Set this variable to keep the original size ratio to fit within {@link image_x} x {@link image_y}
     * 
     * The image will be resized as to fill the whole space, and excedent will be cropped
     *
     * Value can also be a string, one or more character from 'TBLR' (top, bottom, left and right)
     * If set as a string, it determines which side of the image is kept while cropping.
     * By default, the part of the image kept is in the center, i.e. it crops equally on both sides
     *
     * Default value is false
     *
     * @access public
     * @var mixed
     */
    var $image_ratio_crop;

    /**
     * Set this variable to keep the original size ratio to fit within {@link image_x} x {@link image_y}
     * 
     * The image will be resized to fit entirely in the space, and the rest will be colored.
     * The default color is white, but can be set with {@link image_default_color}
     *
     * Value can also be a string, one or more character from 'TBLR' (top, bottom, left and right)
     * If set as a string, it determines in which side of the space the image is displayed.
     * By default, the image is displayed in the center, i.e. it fills the remaining space equally on both sides
     *
     * Default value is false
     *
     * @access public
     * @var mixed
     */
    var $image_ratio_fill;

    /**
     * Set this variable to a number of pixels so that {@link image_x} and {@link image_y} are the best match possible
     * 
     * The image will be resized to have approximatively the number of pixels
     * The aspect ratio wil be conserved
     *
     * Default value is false
     *
     * @access public
     * @var mixed
     */
    var $image_ratio_pixels;

    /**
     * Set this variable to keep the original size ratio to fit within {@link image_x} x {@link image_y}, 
     * but only if original image is bigger
     *
     * Default value is false
     *
     * @access public
     * @var bool
     */
    var $image_ratio_no_zoom_in;

    /**
     * Set this variable to keep the original size ratio to fit within {@link image_x} x {@link image_y}, 
     * but only if original image is smaller
     *
     * Default value is false
     *
     * @access public
     * @var bool
     */
    var $image_ratio_no_zoom_out;

    /**
     * Set this variable to calculate {@link image_x} automatically , using {@link image_y} and conserving ratio
     *
     * Default value is false
     *
     * @access public
     * @var bool
     */
    var $image_ratio_x;

    /**
     * Set this variable to calculate {@link image_y} automatically , using {@link image_x} and conserving ratio
     *
     * Default value is false
     *
     * @access public
     * @var bool
     */
    var $image_ratio_y;

    /**
     * Set this variable to set a maximum image width, above which the upload will be invalid
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_max_width;
    
    /**
     * Set this variable to set a maximum image height, above which the upload will be invalid
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_max_height;
    
    /**
     * Set this variable to set a maximum number of pixels for an image, above which the upload will be invalid
     *
     * Default value is null
     *
     * @access public
     * @var long
     */
    var $image_max_pixels;
    
    /**
     * Set this variable to set a maximum image aspect ratio, above which the upload will be invalid
     *
     * Note that ratio = width / height 
     *
     * Default value is null
     *
     * @access public
     * @var float
     */
    var $image_max_ratio;
    
    /**
     * Set this variable to set a minimum image width, below which the upload will be invalid
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_min_width;
    
    /**
     * Set this variable to set a minimum image height, below which the upload will be invalid
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_min_height;
    
    /**
     * Set this variable to set a minimum number of pixels for an image, below which the upload will be invalid
     *
     * Default value is null
     *
     * @access public
     * @var long
     */
    var $image_min_pixels;
    
    /**
     * Set this variable to set a minimum image aspect ratio, below which the upload will be invalid
     *
     * Note that ratio = width / height 
     *
     * Default value is null
     *
     * @access public
     * @var float
     */
    var $image_min_ratio;    

    /**
     * Quality of JPEG created/converted destination image
     *
     * Default value is 85
     *
     * @access public
     * @var integer
     */
    var $jpeg_quality;

    /**
     * Determines the quality of the JPG image to fit a desired file size
     *
     * Value is in bytes. The JPG quality will be set between 1 and 100%
     * The calculations are approximations.
     *
     * Default value is null (no calculations)
     *
     * @access public
     * @var integer
     */
    var $jpeg_size;

    /**
     * Preserve transparency when resizing or converting an image (deprecated)
     *
     * Default value is automatically set to true for transparent GIFs
     * This setting is now deprecated     
     *
     * @access public
     * @var integer
     */
    var $preserve_transparency;
    
    /**
     * Flag set to true when the image is transparent
     *
     * This is actually used only for transparent GIFs 
     *
     * @access public
     * @var boolean
     */
    var $image_is_transparent;
    
    /**
     * Transparent color in a palette
     *
     * This is actually used only for transparent GIFs 
     *
     * @access public
     * @var boolean
     */
    var $image_transparent_color;

    /**
     * Background color, used to paint transparent areas with
     *
     * If set, it will forcibly remove transparency by painting transparent areas with the color
     * This setting will fill in all transparent areas in PNG and GIF, as opposed to {@link image_default_color}
     * which will do so only in BMP, JPEG, and alpha transparent areas in transparent GIFs
     * This setting overrides {@link image_default_color}
     *
     * Default value is null
     *
     * @access public
     * @var string
     */
    var $image_background_color;   
    
    /**
     * Default color for non alpha-transparent images
     *
     * This setting is to be used to define a background color for semi transparent areas
     * of an alpha transparent when the output format doesn't support alpha transparency
     * This is useful when, from an alpha transparent PNG image, or an image with alpha transparent features
     * if you want to output it as a transparent GIFs for instance, you can set a blending color for transparent areas
     * If you output in JPEG or BMP, this color will be used to fill in the previously transparent areas
     *
     * The default color white
     *
     * @access public
     * @var boolean
     */
    var $image_default_color;
        
    /**
     * Flag set to true when the image is not true color
     *
     * @access public
     * @var boolean
     */
    var $image_is_palette;    
    
    /**
     * Corrects the image brightness
     *
     * Value can range between -127 and 127
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_brightness;

    /**
     * Corrects the image contrast
     *
     * Value can range between -127 and 127
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_contrast;
    
    /**
     * Applies threshold filter
     *
     * Value can range between -127 and 127
     *
     * Default value is null
     *
     * @access public
     * @var integer
     */
    var $image_threshold;

    /**
     * Applies a tint on the image
     *
     * Value is an hexadecimal color, such as #FFFFFF
     *
     * Default value is null
     *
     * @access public
     * @var string;
     */
    var $image_tint_color;

    /**
     * Applies a colored overlay on the image
     *
     * Value is an hexadecimal color, such as #FFFFFF
     *
     * To use with {@link image_overlay_percent}
     *
     * Default value is null
     *
     * @access public
     * @var string;
     */
    var $image_overlay_color;

    /**
     * Sets the percentage for the colored overlay
     *
     * Value is a percentage, as an integer between 0 and 100
     *
     * Unless used with {@link image_overlay_color}, this setting has no effect
     *
     * Default value is 50
     *
     * @access public
     * @var integer
     */
    var $image_overlay_percent;

    /**
     * Inverts the color of an image
     *
     * Default value is FALSE
     *
     * @access public
     * @var boolean;
     */
    var $image_negative;
    
    /**
     * Turns the image into greyscale
     *
     * Default value is FALSE
     *
     * @access public
     * @var boolean;
     */
    var $image_greyscale;

    /**
     * Adds a text label on the image
     *
     * Value is a string, any text. Text will not word-wrap, although you can use breaklines in your text "\n"
     *
     * If set, this setting allow the use of all other settings starting with image_text_
     *
     * Replacement tokens can be used in the string:
     * <pre>
     * gd_version    src_name       src_name_body src_name_ext
     * src_pathname  src_mime       src_x         src_y       
     * src_type      src_bits       src_pixels
     * src_size      src_size_kb    src_size_mb   src_size_human 
     * dst_path      dst_name_body  dst_pathname
     * dst_name      dst_name_ext   dst_x         dst_y
     * date          time           host          server        ip
     * </pre>
     * The tokens must be enclosed in square brackets: [dst_x] will be replaced by the width of the picture
     *
     * Default value is null
     *
     * @access public
     * @var string;
     */
    var $image_text;

    /**
     * Sets the text direction for the text label
     *
     * Value is either 'h' or 'v', as in horizontal and vertical
     *
     * Default value is h (horizontal)
     *
     * @access public
     * @var string;
     */
    var $image_text_direction;

    /**
     * Sets the text color for the text label
     *
     * Value is an hexadecimal color, such as #FFFFFF
     *
     * Default value is #FFFFFF (white)
     *
     * @access public
     * @var string;
     */
    var $image_text_color;

    /**
     * Sets the text visibility in the text label
     *
     * Value is a percentage, as an integer between 0 and 100
     *
     * Default value is 100
     *
     * @access public
     * @var integer
     */
    var $image_text_percent;

    /**
     * Sets the text background color for the text label
     *
     * Value is an hexadecimal color, such as #FFFFFF
     *
     * Default value is null (no background)
     *
     * @access public
     * @var string;
     */
    var $image_text_background;

    /**
     * Sets the text background visibility in the text label
     *
     * Value is a percentage, as an integer between 0 and 100
     *
     * Default value is 100
     *
     * @access public
     * @var integer
     */
    var $image_text_background_percent;

    /**
     * Sets the text font in the text label
     *
     * Value is a an integer between 1 and 5 for GD built-in fonts. 1 is the smallest font, 5 the biggest
     * Value can also be a string, which represents the path to a GDF font. The font will be loaded into GD, and used as a built-in font.
     *
     * Default value is 5
     *
     * @access public
     * @var mixed;
     */
    var $image_text_font;

    /**
     * Sets the text label position within the image
     *
     * Value is one or two out of 'TBLR' (top, bottom, left, right)
     *
     * The positions are as following:   
     * <pre>
     *                        TL  T  TR
     *                        L       R
     *                        BL  B  BR
     * </pre>
     *
     * Default value is null (centered, horizontal and vertical)
     *
     * Note that is {@link image_text_x} and {@link image_text_y} are used, this setting has no effect
     *
     * @access public
     * @var string;
     */
    var $image_text_position;

    /**
     * Sets the text label absolute X position within the image
     *
     * Value is in pixels, representing the distance between the left of the image and the label
     * If a negative value is used, it will represent the distance between the right of the image and the label    
     *     
     * Default value is null (so {@link image_text_position} is used)
     *
     * @access public
     * @var integer
     */
    var $image_text_x;

    /**
     * Sets the text label absolute Y position within the image
     *
     * Value is in pixels, representing the distance between the top of the image and the label
     * If a negative value is used, it will represent the distance between the bottom of the image and the label    
     *     
     * Default value is null (so {@link image_text_position} is used)
     *
     * @access public
     * @var integer
     */
    var $image_text_y;

    /**
     * Sets the text label padding
     *
     * Value is in pixels, representing the distance between the text and the label background border
     *     
     * Default value is 0
     *
     * This setting can be overriden by {@link image_text_padding_x} and {@link image_text_padding_y}
     *
     * @access public
     * @var integer
     */
    var $image_text_padding;

    /**
     * Sets the text label horizontal padding
     *
     * Value is in pixels, representing the distance between the text and the left and right label background borders
     *     
     * Default value is null
     *
     * If set, this setting overrides the horizontal part of {@link image_text_padding}
     *
     * @access public
     * @var integer
     */
    var $image_text_padding_x;

    /**
     * Sets the text label vertical padding
     *
     * Value is in pixels, representing the distance between the text and the top and bottom label background borders
     *     
     * Default value is null
     *
     * If set, his setting overrides the vertical part of {@link image_text_padding}
     *
     * @access public
     * @var integer
     */
    var $image_text_padding_y;

    /**
     * Sets the text alignment
     *
     * Value is a string, which can be either 'L', 'C' or 'R'
     *     
     * Default value is 'C'
     *
     * This setting is relevant only if the text has several lines.
     *
     * @access public
     * @var string;
     */
    var $image_text_alignment;

    /**
     * Sets the text line spacing
     *
     * Value is an integer, in pixels
     *     
     * Default value is 0
     *
     * This setting is relevant only if the text has several lines.
     *
     * @access public
     * @var integer
     */
    var $image_text_line_spacing;

    /**
     * Sets the height of the reflection
     *
     * Value is an integer in pixels, or a string which format can be in pixels or percentage.
     * For instance, values can be : 40, '40', '40px' or '40%'
     *     
     * Default value is null, no reflection
     *
     * @access public
     * @var mixed;
     */
    var $image_reflection_height;

    /**
     * Sets the space between the source image and its relection
     *
     * Value is an integer in pixels, which can be negative
     *     
     * Default value is 2
     *
     * This setting is relevant only if {@link image_reflection_height} is set
     *
     * @access public
     * @var integer
     */
    var $image_reflection_space;

    /**
     * Sets the color of the reflection background (deprecated)
     *
     * Value is an hexadecimal color, such as #FFFFFF
     *     
     * Default value is #FFFFFF
     *
     * This setting is relevant only if {@link image_reflection_height} is set
     *
     * This setting is now deprecated in favor of {@link image_default_color}
     *
     * @access public
     * @var string;
     */
    var $image_reflection_color;

    /**
     * Sets the initial opacity of the reflection
     *
     * Value is an integer between 0 (no opacity) and 100 (full opacity).
     * The reflection will start from {@link image_reflection_opacity} and end up at 0
     *     
     * Default value is 60
     *
     * This setting is relevant only if {@link image_reflection_height} is set
     *
     * @access public
     * @var integer
     */
    var $image_reflection_opacity;

    /**
     * Flips the image vertically or horizontally
     *
     * Value is either 'h' or 'v', as in horizontal and vertical
     *
     * Default value is null (no flip)
     *
     * @access public
     * @var string;
     */
    var $image_flip;

    /**
     * Rotates the image by increments of 45 degrees
     *
     * Value is either 90, 180 or 270
     *
     * Default value is null (no rotation)
     *
     * @access public
     * @var string;
     */
    var $image_rotate;

    /**
     * Crops an image
     *
     * Values are four dimensions, or two, or one (CSS style)
     * They represent the amount cropped top, right, bottom and left.
     * These values can either be in an array, or a space separated string.
     * Each value can be in pixels (with or without 'px'), or percentage (of the source image)
     *
     * For instance, are valid:
     * <pre>
     * $foo->image_crop = 20                  OR array(20);
     * $foo->image_crop = '20px'              OR array('20px');
     * $foo->image_crop = '20 40'             OR array('20', 40);
     * $foo->image_crop = '-20 25%'           OR array(-20, '25%');
     * $foo->image_crop = '20px 25%'          OR array('20px', '25%');
     * $foo->image_crop = '20% 25%'           OR array('20%', '25%');
     * $foo->image_crop = '20% 25% 10% 30%'   OR array('20%', '25%', '10%', '30%');
     * $foo->image_crop = '20px 25px 2px 2px' OR array('20px', '25%px', '2px', '2px');
     * $foo->image_crop = '20 25% 40px 10%'   OR array(20, '25%', '40px', '10%');
     * </pre>
     *
     * If a value is negative, the image will be expanded, and the extra parts will be filled with black
     *
     * Default value is null (no cropping)
     *
     * @access public
     * @var string OR array;
     */
    var $image_crop;

    /**
     * Adds a bevel border on the image
     *
     * Value is a positive integer, representing the thickness of the bevel
     *
     * If the bevel colors are the same as the background, it makes a fade out effect
     *
     * Default value is null (no bevel)
     *
     * @access public
     * @var integer
     */
    var $image_bevel;

    /**
     * Top and left bevel color
     *
     * Value is a color, in hexadecimal format
     * This setting is used only if {@link image_bevel} is set
     *
     * Default value is #FFFFFF
     *
     * @access public
     * @var string;
     */
    var $image_bevel_color1;

    /**
     * Right and bottom bevel color
     *
     * Value is a color, in hexadecimal format
     * This setting is used only if {@link image_bevel} is set
     *
     * Default value is #000000
     *
     * @access public
     * @var string;
     */
    var $image_bevel_color2;

    /**
     * Adds a single-color border on the outer of the image
     *
     * Values are four dimensions, or two, or one (CSS style)
     * They represent the border thickness top, right, bottom and left.
     * These values can either be in an array, or a space separated string.
     * Each value can be in pixels (with or without 'px'), or percentage (of the source image)
     *
     * See {@link image_crop} for valid formats
     *
     * If a value is negative, the image will be cropped. 
     * Note that the dimensions of the picture will be increased by the borders' thickness
     *
     * Default value is null (no border)
     *
     * @access public
     * @var integer
     */
    var $image_border;

    /**
     * Border color
     *
     * Value is a color, in hexadecimal format. 
     * This setting is used only if {@link image_border} is set
     *
     * Default value is #FFFFFF
     *
     * @access public
     * @var string;
     */
    var $image_border_color;

    /**
     * Adds a multi-color frame on the outer of the image
     *
     * Value is an integer. Two values are possible for now:
     * 1 for flat border, meaning that the frame is mirrored horizontally and vertically
     * 2 for crossed border, meaning that the frame will be inversed, as in a bevel effect
     *
     * The frame will be composed of colored lines set in {@link image_frame_colors}
     *
     * Note that the dimensions of the picture will be increased by the borders' thickness
     *
     * Default value is null (no frame)
     *
     * @access public
     * @var integer
     */
    var $image_frame;

    /**
     * Sets the colors used to draw a frame
     *
     * Values is a list of n colors in hexadecimal format.
     * These values can either be in an array, or a space separated string.
     *
     * The colors are listed in the following order: from the outset of the image to its center
     * 
     * For instance, are valid:
     * <pre>
     * $foo->image_frame_colors = '#FFFFFF #999999 #666666 #000000';
     * $foo->image_frame_colors = array('#FFFFFF', '#999999', '#666666', '#000000');
     * </pre>
     *
     * This setting is used only if {@link image_frame} is set
     *
     * Default value is '#FFFFFF #999999 #666666 #000000'
     *
     * @access public
     * @var string OR array;
     */
    var $image_frame_colors;

    /**
     * Adds a watermark on the image
     *
     * Value is a local image filename, relative or absolute. GIF, JPG, BMP and PNG are supported, as well as PNG alpha.
     *
     * If set, this setting allow the use of all other settings starting with image_watermark_
     *
     * Default value is null
     *
     * @access public
     * @var string;
     */
    var $image_watermark;

    /**
     * Sets the watermarkposition within the image
     *
     * Value is one or two out of 'TBLR' (top, bottom, left, right)
     *
     * The positions are as following:   TL  T  TR
     *                                   L       R
     *                                   BL  B  BR
     *
     * Default value is null (centered, horizontal and vertical)
     *
     * Note that is {@link image_watermark_x} and {@link image_watermark_y} are used, this setting has no effect
     *
     * @access public
     * @var string;
     */
    var $image_watermark_position;

    /**
     * Sets the watermark absolute X position within the image
     *
     * Value is in pixels, representing the distance between the top of the image and the watermark
     * If a negative value is used, it will represent the distance between the bottom of the image and the watermark    
     *     
     * Default value is null (so {@link image_watermark_position} is used)
     *
     * @access public
     * @var integer
     */
    var $image_watermark_x;

    /**
     * Sets the twatermark absolute Y position within the image
     *
     * Value is in pixels, representing the distance between the left of the image and the watermark
     * If a negative value is used, it will represent the distance between the right of the image and the watermark    
     *     
     * Default value is null (so {@link image_watermark_position} is used)
     *
     * @access public
     * @var integer
     */
    var $image_watermark_y;

    /**
     * Allowed MIME types
     *
     * Default is a selection of safe mime-types, but you might want to change it
     *
     * Simple wildcards are allowed, such as image/* or application/*
     *
     * @access public
     * @var array
     */
    var $allowed;
    
    /**
     * Forbidden MIME types
     *
     * Default is a selection of safe mime-types, but you might want to change it
     * To only check for forbidden MIME types, and allow everything else, set {@link allowed} to array('* / *') without the spaces
     *
     * Simple wildcards are allowed, such as image/* or application/*
     *
     * @access public
     * @var array
     */
    var $forbidden;
    
    /**
     * Array of translated error messages
     *
     * By default, the language is english (en_GB)
     * Translations can be in separate files, in a lang/ subdirectory
     *
     * @access public
     * @var array
     */
    var $translation;
    
    /**
     * Language selected for the translations
     *
     * By default, the language is english ("en_GB")
     *
     * @access public
     * @var array
     */
    var $language;
    
    /**
     * Init or re-init all the processing variables to their default values
     *
     * This function is called in the constructor, and after each call of {@link process}
     *
     * @access private
     */
    function init() {

        // overiddable variables
        $this->file_new_name_body       = '';       // replace the name body
        $this->file_name_body_add       = '';       // append to the name body
        $this->file_new_name_ext        = '';       // replace the file extension
        $this->file_safe_name           = true;     // format safely the filename
        $this->file_overwrite           = false;    // allows overwritting if the file already exists
        $this->file_auto_rename         = true;     // auto-rename if the file already exists
        $this->dir_auto_create          = true;     // auto-creates directory if missing
        $this->dir_auto_chmod           = true;     // auto-chmod directory if not writeable
        $this->dir_chmod                = 0777;     // default chmod to use
        
        $this->mime_check               = true;     // don't check the mime type against the allowed list
        $this->mime_magic_check         = false;    // don't double check the MIME type with mime_magic
        $this->no_script                = true;     // turns scripts into test files 

        $val = trim(ini_get('upload_max_filesize'));
        $last = strtolower($val{strlen($val)-1});
        switch($last) {
            case 'g':
                $val *= 1024;
            case 'm':
                $val *= 1024;
            case 'k':
                $val *= 1024;
        }
        $this->file_max_size = $val;   
        
        $this->image_resize             = false;    // resize the image
        $this->image_convert            = '';       // convert. values :''; 'png'; 'jpeg'; 'gif'; 'bmp'

        $this->image_x                  = 150;
        $this->image_y                  = 150;
        $this->image_ratio              = false;    // keeps aspect ratio with x and y dimensions
        $this->image_ratio_crop         = false;    // keeps aspect ratio with x and y dimensions, filling the space
        $this->image_ratio_fill         = false;    // keeps aspect ratio with x and y dimensions, fitting the image in the space, and coloring the rest
        $this->image_ratio_pixels       = false;    // keeps aspect ratio, calculating x and y so that the image is approx the set number of pixels
        $this->image_ratio_no_zoom_in   = false;
        $this->image_ratio_no_zoom_out  = false;
        $this->image_ratio_x            = false;    // calculate the $image_x if true
        $this->image_ratio_y            = false;    // calculate the $image_y if true
        $this->jpeg_quality             = 85;
        $this->jpeg_size                = null;
        $this->preserve_transparency    = false;
        $this->image_is_transparent     = false;
        $this->image_transparent_color  = null;
        $this->image_background_color   = null;
        $this->image_default_color      = '#ffffff';
        $this->image_is_palette         = false;
        
        $this->image_max_width          = null;
        $this->image_max_height         = null;
        $this->image_max_pixels         = null;
        $this->image_max_ratio          = null;
        $this->image_min_width          = null;
        $this->image_min_height         = null;
        $this->image_min_pixels         = null;
        $this->image_min_ratio          = null;        
        
        $this->image_brightness         = null; 
        $this->image_contrast           = null;
        $this->image_threshold          = null;
        $this->image_tint_color         = null;
        $this->image_overlay_color      = null;
        $this->image_overlay_percent    = null;
        $this->image_negative           = false;
        $this->image_greyscale          = false;

        $this->image_text               = null;
        $this->image_text_direction     = null;
        $this->image_text_color         = '#FFFFFF';
        $this->image_text_percent       = 100;
        $this->image_text_background    = null;
        $this->image_text_background_percent = 100; 
        $this->image_text_font          = 5;
        $this->image_text_x             = null;
        $this->image_text_y             = null;
        $this->image_text_position      = null; 
        $this->image_text_padding       = 0;
        $this->image_text_padding_x     = null;
        $this->image_text_padding_y     = null;
        $this->image_text_alignment     = 'C';  
        $this->image_text_line_spacing  = 0;

        $this->image_reflection_height  = null;
        $this->image_reflection_space   = 2;
        $this->image_reflection_color   = '#ffffff';
        $this->image_reflection_opacity = 60;
       
        $this->image_watermark          = null;
        $this->image_watermark_x        = null;
        $this->image_watermark_y        = null;
        $this->image_watermark_position = null; 

        $this->image_flip               = null; 
        $this->image_rotate             = null;   
        $this->image_crop               = null;

        $this->image_bevel              = null;
        $this->image_bevel_color1       = '#FFFFFF';
        $this->image_bevel_color2       = '#000000';      
        $this->image_border             = null;
        $this->image_border_color       = '#FFFFFF';
        $this->image_frame              = null;
        $this->image_frame_colors       = '#FFFFFF #999999 #666666 #000000';

        $this->forbidden = array();
        $this->allowed = array("application/rar",
                               "application/x-rar-compressed",
                               "application/arj",
                               "application/excel",
                               "application/gnutar",
                               "application/octet-stream",
                               "application/pdf",
                               "application/powerpoint",
                               "application/postscript",
                               "application/plain",
                               "application/rtf",
                               "application/vocaltec-media-file",
                               "application/wordperfect",
                               "application/x-bzip",
                               "application/x-bzip2",
                               "application/x-compressed",
                               "application/x-excel",
                               "application/x-gzip",
                               "application/x-latex",
                               "application/x-midi",
                               "application/x-msexcel",
                               "application/x-rtf",
                               "application/x-sit",
                               "application/x-stuffit",
                               "application/x-shockwave-flash",
                               "application/x-troff-msvideo",
                               "application/x-zip-compressed",
                               "application/xml",
                               "application/zip",
                               "application/msword",
                               "application/mspowerpoint",
                               "application/vnd.ms-excel",
                               "application/vnd.ms-powerpoint",
                               "application/vnd.ms-word",
                               "application/vnd.ms-word.document.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
                               "application/vnd.ms-word.template.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.wordprocessingml.template",
                               "application/vnd.ms-powerpoint.template.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.presentationml.template",
                               "application/vnd.ms-powerpoint.addin.macroEnabled.12",
                               "application/vnd.ms-powerpoint.slideshow.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.presentationml.slideshow",
                               "application/vnd.ms-powerpoint.presentation.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.presentationml.presentation",
                               "application/vnd.ms-excel.addin.macroEnabled.12",
                               "application/vnd.ms-excel.sheet.binary.macroEnabled.12",
                               "application/vnd.ms-excel.sheet.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
                               "application/vnd.ms-excel.template.macroEnabled.12",
                               "application/vnd.openxmlformats-officedocument.spreadsheetml.template",
                               "audio/*",
                               "image/*",
                               "video/*",
                               "multipart/x-zip",
                               "multipart/x-gzip",
                               "text/richtext",
                               "text/plain",
                               "text/xml");

    }

    /**
     * Constructor. Checks if the file has been uploaded
     *
     * The constructor takes $_FILES['form_field'] array as argument
     * where form_field is the form field name
     *
     * The constructor will check if the file has been uploaded in its temporary location, and
     * accordingly will set {@link uploaded} (and {@link error} is an error occurred)
     *
     * If the file has been uploaded, the constructor will populate all the variables holding the upload 
     * information (none of the processing class variables are used here).
     * You can have access to information about the file (name, size, MIME type...).
     *
     *
     * Alternatively, you can set the first argument to be a local filename (string)
     * This allows processing of a local file, as if the file was uploaded
     *
     * The optional second argument allows you to set the language for the error messages
     *
     * @access private
     * @param  array  $file $_FILES['form_field']
     *    or   string $file Local filename
     * @param  string $lang Optional language code
     */
    function upload($file, $lang = 'en_GB') {

        $this->file_src_name      = '';
        $this->file_src_name_body = '';
        $this->file_src_name_ext  = '';
        $this->file_src_mime      = '';
        $this->file_src_size      = '';
        $this->file_src_error     = '';
        $this->file_src_pathname  = '';
        $this->file_src_temp      = '';

        $this->file_dst_path      = '';
        $this->file_dst_name      = '';
        $this->file_dst_name_body = '';
        $this->file_dst_name_ext  = '';
        $this->file_dst_pathname  = '';

        $this->image_src_x        = null;
        $this->image_src_y        = null;
        $this->image_src_bits     = null;
        $this->image_src_type     = null;
        $this->image_src_pixels   = null;
        $this->image_dst_x        = 0;
        $this->image_dst_y        = 0;

        $this->uploaded           = true;
        $this->no_upload_check    = false;
        $this->processed          = true;
        $this->error              = '';
        $this->log                = '';        
        $this->allowed            = array();
        $this->forbidden          = array();
        $this->file_is_image      = false;
        $this->init();
        $info                     = null;
        
        // sets default language
        $this->translation        = array();
        $this->translation['file_error']                  = 'File error. Please try again.';
        $this->translation['local_file_missing']          = 'Local file doesn\'t exist.';
        $this->translation['local_file_not_readable']     = 'Local file is not readable.';
        $this->translation['uploaded_too_big_ini']        = 'File upload error (the uploaded file exceeds the upload_max_filesize directive in php.ini).';
        $this->translation['uploaded_too_big_html']       = 'File upload error (the uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the html form).';
        $this->translation['uploaded_partial']            = 'File upload error (the uploaded file was only partially uploaded).';
        $this->translation['uploaded_missing']            = 'File upload error (no file was uploaded).';
        $this->translation['uploaded_unknown']            = 'File upload error (unknown error code).';
        $this->translation['try_again']                   = 'File upload error. Please try again.';
        $this->translation['file_too_big']                = 'File too big.';
        $this->translation['no_mime']                     = 'MIME type can\'t be detected.';
        $this->translation['incorrect_file']              = 'Incorrect type of file.';
        $this->translation['image_too_wide']              = 'Image too wide.';
        $this->translation['image_too_narrow']            = 'Image too narrow.';
        $this->translation['image_too_high']              = 'Image too high.';
        $this->translation['image_too_short']             = 'Image too short.';
        $this->translation['ratio_too_high']              = 'Image ratio too high (image too wide).';
        $this->translation['ratio_too_low']               = 'Image ratio too low (image too high).';
        $this->translation['too_many_pixels']             = 'Image has too many pixels.';
        $this->translation['not_enough_pixels']           = 'Image has not enough pixels.';
        $this->translation['file_not_uploaded']           = 'File not uploaded. Can\'t carry on a process.';
        $this->translation['already_exists']              = '%s already exists. Please change the file name.';
        $this->translation['temp_file_missing']           = 'No correct temp source file. Can\'t carry on a process.';
        $this->translation['source_missing']              = 'No correct uploaded source file. Can\'t carry on a process.';
        $this->translation['destination_dir']             = 'Destination directory can\'t be created. Can\'t carry on a process.';
        $this->translation['destination_dir_missing']     = 'Destination directory doesn\'t exist. Can\'t carry on a process.';
        $this->translation['destination_path_not_dir']    = 'Destination path is not a directory. Can\'t carry on a process.';
        $this->translation['destination_dir_write']       = 'Destination directory can\'t be made writeable. Can\'t carry on a process.';
        $this->translation['destination_path_write']      = 'Destination path is not a writeable. Can\'t carry on a process.';
        $this->translation['temp_file']                   = 'Can\'t create the temporary file. Can\'t carry on a process.';
        $this->translation['source_not_readable']         = 'Source file is not readable. Can\'t carry on a process.';
        $this->translation['no_create_support']           = 'No create from %s support.';
        $this->translation['create_error']                = 'Error in creating %s image from source.';
        $this->translation['source_invalid']              = 'Can\'t read image source. Not an image?.';
        $this->translation['gd_missing']                  = 'GD doesn\'t seem to be present.';
        $this->translation['watermark_no_create_support'] = 'No create from %s support, can\'t read watermark.';
        $this->translation['watermark_create_error']      = 'No %s read support, can\'t create watermark.';
        $this->translation['watermark_invalid']           = 'Unknown image format, can\'t read watermark.';
        $this->translation['file_create']                 = 'No %s create support.';
        $this->translation['no_conversion_type']          = 'No conversion type defined.';
        $this->translation['copy_failed']                 = 'Error copying file on the server. copy() failed.';
        $this->translation['reading_failed']              = 'Error reading the file.';        

        // determines the language
        $this->lang               = $lang;
        if ($this->lang != 'en_GB' && file_exists('lang/class.upload.' . $lang . '.php')) {
            $translation = null;
            include('lang/class.upload.' . $lang . '.php');
            if (is_array($translation)) {
                $this->translation = array_merge($this->translation, $translation);
            } else {
                $this->lang = 'en_GB';
            }
        }


        // determines the supported MIME types, and matching image format
        $this->image_supported = array();
        if ($this->gdversion()) {
            if (imagetypes() & IMG_GIF) {
                $this->image_supported['image/gif'] = 'gif';
            }
            if (imagetypes() & IMG_JPG) {
                $this->image_supported['image/jpg'] = 'jpg';
                $this->image_supported['image/jpeg'] = 'jpg';
                $this->image_supported['image/pjpeg'] = 'jpg';
            }
            if (imagetypes() & IMG_PNG) {
                $this->image_supported['image/png'] = 'png';
                $this->image_supported['image/x-png'] = 'png';
            }
            if (imagetypes() & IMG_WBMP) {
                $this->image_supported['image/bmp'] = 'bmp';
                $this->image_supported['image/x-ms-bmp'] = 'bmp';
                $this->image_supported['image/x-windows-bmp'] = 'bmp';
            }
        }

        // display some system information
        if (empty($this->log)) { 
            $this->log .= '<b>system information</b><br />';
            $inis = ini_get_all();
            $open_basedir = (array_key_exists('open_basedir', $inis) && array_key_exists('local_value', $inis['open_basedir']) && !empty($inis['open_basedir']['local_value'])) ? $inis['open_basedir']['local_value'] : false;
            $gd           = $this->gdversion() ? $this->gdversion(true) : 'GD not present';
            $supported    = trim((in_array('png', $this->image_supported) ? 'png' : '') . ' ' . (in_array('jpg', $this->image_supported) ? 'jpg' : '') . ' ' . (in_array('gif', $this->image_supported) ? 'gif' : '') . ' ' . (in_array('bmp', $this->image_supported) ? 'bmp' : ''));
            $this->log .= '-&nbsp;GD version              : ' . $gd . '<br />';
            $this->log .= '-&nbsp;supported image types   : ' . (!empty($supported) ? $supported : 'none') . '<br />';
            $this->log .= '-&nbsp;open_basedir            : ' . (!empty($open_basedir) ? $open_basedir : 'no restriction') . '<br />';
            $this->log .= '-&nbsp;language                : ' . $this->lang . '<br />';       
        }

        if (!$file) {
            $this->uploaded = false;
            $this->error = $this->translate('file_error');
        }

        // check if we sent a local filename rather than a $_FILE element
        if (!is_array($file)) {
            if (empty($file)) {
                $this->uploaded = false;
                $this->error = $this->translate('file_error');
            } else {
                $this->no_upload_check = TRUE;
                // this is a local filename, i.e.not uploaded
                $this->log .= '<b>' . $this->translate("source is a local file") . ' ' . $file . '</b><br />';

                if ($this->uploaded && !file_exists($file)) {
                    $this->uploaded = false;
                    $this->error = $this->translate('local_file_missing');
                }
        
                if ($this->uploaded && !is_readable($file)) {
                    $this->uploaded = false;
                    $this->error = $this->translate('local_file_not_readable');
                }

                if ($this->uploaded) {
                    $this->file_src_pathname   = $file;
                    $this->file_src_name       = basename($file);
                    $this->log .= '- local file name OK<br />';
                    preg_match('/\.([^\.]*$)/', $this->file_src_name, $extension);
                    if (is_array($extension)) {
                        $this->file_src_name_ext      = strtolower($extension[1]);
                        $this->file_src_name_body     = substr($this->file_src_name, 0, ((strlen($this->file_src_name) - strlen($this->file_src_name_ext)))-1);
                    } else {
                        $this->file_src_name_ext      = '';
                        $this->file_src_name_body     = $this->file_src_name;
                    }
                    $this->file_src_size = (file_exists($file) ? filesize($file) : 0);
                    // we try to retrieve the MIME type
                    $info = getimagesize($this->file_src_pathname);
                    $this->file_src_mime = (is_array($info) && array_key_exists('mime', $info) ? $info['mime'] : null); 
                    // if we don't have a MIME type, we attempt to retrieve it the old way
                    if (empty($this->file_src_mime)) {
                        $mime = (is_array($info) && array_key_exists(2, $info) ? $info[2] : null); // 1 = GIF, 2 = JPG, 3 = PNG
                        $this->file_src_mime = ($mime==IMAGETYPE_GIF ? 'image/gif' : ($mime==IMAGETYPE_JPEG ? 'image/jpeg' : ($mime==IMAGETYPE_PNG ? 'image/png' : ($mime==IMAGETYPE_BMP ? 'image/bmp' : null))));
                    }
                    // if we still don't have a MIME type, we attempt to retrieve it otherwise
                    if (empty($this->file_src_mime) && function_exists('mime_content_type')) {
                        $this->file_src_mime = mime_content_type($this->file_src_pathname);
                    }                     
                    $this->file_src_error = 0; 
                    // determine whether the file is an image
                    if (array_key_exists($this->file_src_mime, $this->image_supported)) {
                        $this->file_is_image = true;
                        $this->image_src_type = $this->image_supported[$this->file_src_mime];
                    }
                }                
            }
        } else {
            // this is an element from $_FILE, i.e. an uploaded file
            $this->log .= '<b>source is an uploaded file</b><br />';
            if ($this->uploaded) {
                $this->file_src_error         = $file['error'];
                switch($this->file_src_error) {
                    case 0:
                        // all is OK
                        $this->log .= '- upload OK<br />';
                        break;
                    case 1:
                        $this->uploaded = false;
                        $this->error = $this->translate('uploaded_too_big_ini');
                        break;
                    case 2:
                        $this->uploaded = false;
                        $this->error = $this->translate('uploaded_too_big_html');
                        break;
                    case 3:
                        $this->uploaded = false;
                        $this->error = $this->translate('uploaded_partial');
                        break;
                    case 4:
                        $this->uploaded = false;
                        $this->error = $this->translate('uploaded_missing');
                        break;
                    default:
                        $this->uploaded = false;
                        $this->error = $this->translate('uploaded_unknown');
                }
            }
    
            if ($this->uploaded) {
                $this->file_src_pathname   = $file['tmp_name'];
                $this->file_src_name       = $file['name'];
                if ($this->file_src_name == '') {
                    $this->uploaded = false;
                    $this->error = $this->translate('try_again');
                }
            }

            if ($this->uploaded) {
                $this->log .= '- file name OK<br />';
                preg_match('/\.([^\.]*$)/', $this->file_src_name, $extension);
                if (is_array($extension)) {
                    $this->file_src_name_ext      = strtolower($extension[1]);
                    $this->file_src_name_body     = substr($this->file_src_name, 0, ((strlen($this->file_src_name) - strlen($this->file_src_name_ext)))-1);
                } else {
                    $this->file_src_name_ext      = '';
                    $this->file_src_name_body     = $this->file_src_name;
                }
                $this->file_src_size = $file['size'];
                $this->file_src_mime = $file['type'];

                // if the file is an image, we gather some useful data
                if (array_key_exists($this->file_src_mime, $this->image_supported)) {
                    $this->file_is_image = true;
                    $this->image_src_type = $this->image_supported[$this->file_src_mime];
                    $info = @getimagesize($this->file_src_pathname);
                }
            }
        }

        // if the file is an image, we gather some useful data
        if ($this->file_is_image) {
            if (is_array($info)) {
                $this->image_src_x    = $info[0];
                $this->image_src_y    = $info[1];   
                $this->image_src_pixels = $this->image_src_x * $this->image_src_y;   
                $this->image_src_bits = array_key_exists('bits', $info) ? $info['bits'] : null;
            } else {
                $this->log .= '- can\'t retrieve image information. open_basedir restriction in place?<br />';            
            }
        } 

        $this->log .= '- source variables<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_name         : ' . $this->file_src_name . '<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_name_body    : ' . $this->file_src_name_body . '<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_name_ext     : ' . $this->file_src_name_ext . '<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_pathname     : ' . $this->file_src_pathname . '<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_mime         : ' . $this->file_src_mime . '<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_size         : ' . $this->file_src_size . ' (max= ' . $this->file_max_size . ')<br />';
        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_src_error        : ' . $this->file_src_error . '<br />';
        
        if ($this->file_is_image) {
            $this->log .= '- source file is an image<br />';
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_src_x           : ' . $this->image_src_x . '<br />';
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_src_y           : ' . $this->image_src_y . '<br />';
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_src_pixels      : ' . $this->image_src_pixels . '<br />';
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_src_type        : ' . $this->image_src_type . '<br />';
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_src_bits        : ' . $this->image_src_bits . '<br />';
        }
        
    }


    /**
     * Returns the version of GD
     *
     * @access public
     * @param  boolean  $full Optional flag to get precise version
     * @return float GD version
     */
    function gdversion($full = false) {
        static $gd_version = null;
        static $gd_full_version = null;
        if ($gd_version === null) {
            if (function_exists('gd_info')) {
                $gd = gd_info();
                $gd = $gd["GD Version"];
                $regex = "/([\d\.]+)/i";
            } else {
                ob_start();
                phpinfo(8);
                $gd = ob_get_contents();
                ob_end_clean();
                $regex = "/\bgd\s+version\b[^\d\n\r]+?([\d\.]+)/i";
            }
            if (preg_match($regex, $gd, $m)) {
                $gd_full_version = (string) $m[1];
                $gd_version = (float) $m[1];
            } else {
                $gd_full_version = 'none';
                $gd_version = 0;
            }
        }
        if ($full) {
            return $gd_full_version;
        } else {
            return $gd_version;
        }
    } 


    /**
     * Creates directories recursively
     *
     * @access private
     * @param  string  $path Path to create
     * @param  integer $mode Optional permissions
     * @return boolean Success
     */
    function rmkdir($path, $mode = 0777) {
        return is_dir($path) || ( $this->rmkdir(dirname($path), $mode) && $this->_mkdir($path, $mode) );
    }


    /**
     * Creates directory
     *
     * @access private
     * @param  string  $path Path to create
     * @param  integer $mode Optional permissions
     * @return boolean Success
     */
    function _mkdir($path, $mode = 0777) {
        $old = umask(0);
        $res = @mkdir($path, $mode);
        umask($old);
        return $res;
    }


    /**
     * Translate error messages
     *
     * @access private
     * @param  string  $str    Message to translate
     * @param  array   $tokens Optional token values
     * @return string Translated string
     */
    function translate($str, $tokens = array()) {
        if (array_key_exists($str, $this->translation)) $str = $this->translation[$str];
        if (is_array($tokens) && sizeof($tokens) > 0)   $str = vsprintf($str, $tokens);
        return $str;
    }

    /**
     * Creates a container image
     *
     * @access private
     * @param  integer  $x    Width
     * @param  integer  $y    Height
     * @param  boolean  $fill Optional flag to draw the background color or not
     * @param  boolean  $trsp Optional flag to set the background to be transparent
     * @return resource Container image
     */
    function imagecreatenew($x, $y, $fill = true, $trsp = false) {
        if ($this->gdversion() >= 2 && !$this->image_is_palette) {
            // create a true color image
            $dst_im = imagecreatetruecolor($x, $y);
            // this preserves transparency in PNGs, in true color
            if (empty($this->image_background_color) || $trsp) {
                imagealphablending($dst_im, false );
                imagefilledrectangle($dst_im, 0, 0, $x, $y, imagecolorallocatealpha($dst_im, 0, 0, 0, 127));
            }
        } else {
            // creates a palette image
            $dst_im = imagecreate($x, $y);
            // preserves transparency for palette images, if the original image has transparency
            if (($fill && $this->image_is_transparent && empty($this->image_background_color)) || $trsp) {        
                imagefilledrectangle($dst_im, 0, 0, $x, $y, $this->image_transparent_color);
                imagecolortransparent($dst_im, $this->image_transparent_color);
            }
        }
        // fills with background color if any is set
        if ($fill && !empty($this->image_background_color) && !$trsp) {
            sscanf($this->image_background_color, "#%2x%2x%2x", $red, $green, $blue);
            $background_color = imagecolorallocate($dst_im, $red, $green, $blue);
            imagefilledrectangle($dst_im, 0, 0, $x, $y, $background_color);
        }
        return $dst_im;
    }


    /**
     * Transfers an image from the container to the destination image
     *
     * @access private
     * @param  resource $src_im Container image
     * @param  resource $dst_im Destination image
     * @return resource Destination image
     */
    function imagetransfer($src_im, $dst_im) {
        if (is_resource($dst_im)) imagedestroy($dst_im);     
        $dst_im = & $src_im;
        return $dst_im;
    }

    /**
     * Merges two images
     *
     * If the output format is PNG, then we do it pixel per pixel to retain the alpha channel
     *
     * @access private
     * @param  resource $dst_img Destination image
     * @param  resource $src_img Overlay image
     * @param  int      $dst_x   x-coordinate of destination point 
     * @param  int      $dst_y   y-coordinate of destination point 
     * @param  int      $src_x   x-coordinate of source point 
     * @param  int      $src_y   y-coordinate of source point 
     * @param  int      $src_w   Source width 
     * @param  int      $src_h   Source height 
     * @param  int      $pct     Optional percentage of the overlay, between 0 and 100 (default: 100)
     * @return resource Destination image
     */
    function imagecopymergealpha(&$dst_im, &$src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $pct = 0) {
        $dst_x = (int) $dst_x;
        $dst_y = (int) $dst_y;
        $src_x = (int) $src_x;
        $src_y = (int) $src_y;
        $src_w = (int) $src_w;
        $src_h = (int) $src_h;
        $pct   = (int) $pct;
        $dst_w = imagesx($dst_im);
        $dst_h = imagesy($dst_im);

        for ($y = $src_y; $y < $src_h; $y++) {
            for ($x = $src_x; $x < $src_w; $x++) {

                if ($x >= 0 && $x <= $dst_w && $y >= 0 && $y <= $dst_h) {
                    $dst_pixel = imagecolorsforindex($dst_im, imagecolorat($dst_im, $x + $dst_x, $y + $dst_y));
                    $src_pixel = imagecolorsforindex($src_im, imagecolorat($src_im, $x + $src_x, $y + $src_y));

                    $src_alpha = 1 - ($src_pixel['alpha'] / 127);
                    $dst_alpha = 1 - ($dst_pixel['alpha'] / 127);
                    $opacity = $src_alpha * $pct / 100;
                    if ($dst_alpha >= $opacity) $alpha = $dst_alpha;
                    if ($dst_alpha < $opacity)  $alpha = $opacity;              
                    if ($alpha > 1) $alpha = 1;                   

                    if ($opacity > 0) {
                        $dst_red   = round(( ($dst_pixel['red']   * $dst_alpha * (1 - $opacity)) ) );
                        $dst_green = round(( ($dst_pixel['green'] * $dst_alpha * (1 - $opacity)) ) );
                        $dst_blue  = round(( ($dst_pixel['blue']  * $dst_alpha * (1 - $opacity)) ) );
                        $src_red   = round((($src_pixel['red']   * $opacity)) );
                        $src_green = round((($src_pixel['green'] * $opacity)) );
                        $src_blue  = round((($src_pixel['blue']  * $opacity)) );
                        $red   = round(($dst_red   + $src_red  ) / ($dst_alpha * (1 - $opacity) + $opacity));
                        $green = round(($dst_green + $src_green) / ($dst_alpha * (1 - $opacity) + $opacity));
                        $blue  = round(($dst_blue  + $src_blue ) / ($dst_alpha * (1 - $opacity) + $opacity));
                        if ($red   > 255) $red   = 255;  
                        if ($green > 255) $green = 255;  
                        if ($blue  > 255) $blue  = 255;  
                        $alpha =  round((1 - $alpha) * 127);
                        $color = imagecolorallocatealpha($dst_im, $red, $green, $blue, $alpha);
                        imagesetpixel($dst_im, $x + $dst_x, $y + $dst_y, $color);
                    }
                }
            }
        }
        return true;
    }

    /**
     * Actually uploads the file, and act on it according to the set processing class variables
     *
     * This function copies the uploaded file to the given location, eventually performing actions on it.
     * Typically, you can call {@link process} several times for the same file,
     * for instance to create a resized image and a thumbnail of the same file.
     * The original uploaded file remains intact in its temporary location, so you can use {@link process} several times.
     * You will be able to delete the uploaded file with {@link clean} when you have finished all your {@link process} calls.
     *
     * According to the processing class variables set in the calling file, the file can be renamed,
     * and if it is an image, can be resized or converted.
     *
     * When the processing is completed, and the file copied to its new location, the
     * processing class variables will be reset to their default value.
     * This allows you to set new properties, and perform another {@link process} on the same uploaded file
     *
     * If the function is called with a null or empty argument, then it will return the content of the picture
     *
     * It will set {@link processed} (and {@link error} is an error occurred)
     *
     * @access public
     * @param  string $server_path Optional path location of the uploaded file, with an ending slash
     * @return string Optional content of the image
     */
    function process($server_path = null) {

        $this->error        = '';
        $this->processed    = true;
        $return_mode        = false;
        $return_content     = null;

        if (empty($server_path) || is_null($server_path)) {
            $this->log .= '<b>process file and return the content</b><br />';
            $return_mode = true;
        } else {
            if(strtolower(substr(PHP_OS, 0, 3)) === 'win') {
                if (substr($server_path, -1, 1) != '\\') $server_path = $server_path . '\\';
            } else {
                if (substr($server_path, -1, 1) != '/') $server_path = $server_path . '/';
            }
            $this->log .= '<b>process file to '  . $server_path . '</b><br />';
        }

        // checks file size and mine type
        if ($this->uploaded) {

            if ($this->file_src_size > $this->file_max_size ) {
                $this->processed = false;
                $this->error = $this->translate('file_too_big');
            } else {
                $this->log .= '- file size OK<br />';
            }

            // turn dangerous scripts into text files
            if ($this->no_script) {
                if (((substr($this->file_src_mime, 0, 5) == 'text/' || strpos($this->file_src_mime, 'javascript') !== false)  && (substr($this->file_src_name, -4) != '.txt')) 
                    || preg_match('/\.(php|pl|py|cgi|asp)$/i', $this->file_src_name) || empty($this->file_src_name_ext)) {
                    $this->file_src_mime = 'text/plain';
                    $this->log .= '- script '  . $this->file_src_name . ' renamed as ' . $this->file_src_name . '.txt!<br />';
                    $this->file_src_name_ext .= (empty($this->file_src_name_ext) ? 'txt' : '.txt');
                } 
            }

            // checks MIME type with mime_magic
            if ($this->mime_magic_check && function_exists('mime_content_type')) {
                $detected_mime = mime_content_type($this->file_src_pathname);
                if ($this->file_src_mime != $detected_mime) {
                    $this->log .= '- MIME type detected as ' . $detected_mime . ' but given as ' . $this->file_src_mime . '!<br />';
                    $this->file_src_mime = $detected_mime;
                }
            } 

            if ($this->mime_check && empty($this->file_src_mime)) {
                $this->processed = false;
                $this->error = $this->translate('no_mime');
            } else if ($this->mime_check && !empty($this->file_src_mime) && strpos($this->file_src_mime, '/') !== false) {
                list($m1, $m2) = explode('/', $this->file_src_mime);
                $allowed = false;
                // check wether the mime type is allowed
                foreach($this->allowed as $k => $v) {
                    list($v1, $v2) = explode('/', $v);
                    if (($v1 == '*' && $v2 == '*') || ($v1 == $m1 && ($v2 == $m2 || $v2 == '*'))) {
                        $allowed = true;
                        break;
                    }
                }
                // check wether the mime type is forbidden
                foreach($this->forbidden as $k => $v) {
                    list($v1, $v2) = explode('/', $v);
                    if (($v1 == '*' && $v2 == '*') || ($v1 == $m1 && ($v2 == $m2 || $v2 == '*'))) {
                        $allowed = false;
                        break;
                    }
                }
                if (!$allowed) {
                    $this->processed = false;
                    $this->error = $this->translate('incorrect_file');
                } else {
                    $this->log .= '- file mime OK : ' . $this->file_src_mime . '<br />';
                }
            } else {
                $this->log .= '- file mime OK : ' . $this->file_src_mime . '<br />';
            }
            
            // if the file is an image, we can check on its dimensions
            // these checks are not available if open_basedir restrictions are in place
            if ($this->file_is_image) {
                if (is_numeric($this->image_src_x) && is_numeric($this->image_src_y)) {
                    $ratio = $this->image_src_x / $this->image_src_y;
                    if (!is_null($this->image_max_width) && $this->image_src_x > $this->image_max_width) {
                        $this->processed = false;
                        $this->error = $this->translate('image_too_wide');
                    }                    
                    if (!is_null($this->image_min_width) && $this->image_src_x < $this->image_min_width) {
                        $this->processed = false;
                        $this->error = $this->translate('image_too_narrow');
                    }                    
                    if (!is_null($this->image_max_height) && $this->image_src_y > $this->image_max_height) {
                        $this->processed = false;
                        $this->error = $this->translate('image_too_high');
                    }                    
                    if (!is_null($this->image_min_height) && $this->image_src_y < $this->image_min_height) {
                        $this->processed = false;
                        $this->error = $this->translate('image_too_short');
                    }                    
                    if (!is_null($this->image_max_ratio) && $ratio > $this->image_max_ratio) {
                        $this->processed = false;
                        $this->error = $this->translate('ratio_too_high');
                    }                    
                    if (!is_null($this->image_min_ratio) && $ratio < $this->image_min_ratio) {
                        $this->processed = false;
                        $this->error = $this->translate('ratio_too_low');
                    }                    
                    if (!is_null($this->image_max_pixels) && $this->image_src_pixels > $this->image_max_pixels) {
                        $this->processed = false;
                        $this->error = $this->translate('too_many_pixels');
                    }                    
                    if (!is_null($this->image_min_pixels) && $this->image_src_pixels < $this->image_min_pixels) {
                        $this->processed = false;
                        $this->error = $this->translate('not_enough_pixels');
                    }                 
                } else {
                    $this->log .= '- no image properties available, can\'t enforce dimension checks : ' . $this->file_src_mime . '<br />';
                }
            }
            
            
        } else {
            $this->error = $this->translate('file_not_uploaded');
            $this->processed = false;
        }

        if ($this->processed) {
            $this->file_dst_path        = $server_path;

            // repopulate dst variables from src
            $this->file_dst_name        = $this->file_src_name;
            $this->file_dst_name_body   = $this->file_src_name_body;
            $this->file_dst_name_ext    = $this->file_src_name_ext;

            if ($this->image_convert != '') { // if we convert as an image
                $this->file_dst_name_ext  = $this->image_convert;
                $this->log .= '- new file name ext : ' . $this->image_convert . '<br />';
            }
            if ($this->file_new_name_body != '') { // rename file body
                $this->file_dst_name_body = $this->file_new_name_body;
                $this->log .= '- new file name body : ' . $this->file_new_name_body . '<br />';
            }
            if ($this->file_new_name_ext != '') { // rename file ext
                $this->file_dst_name_ext  = $this->file_new_name_ext;
                $this->log .= '- new file name ext : ' . $this->file_new_name_ext . '<br />';
            }
            if ($this->file_name_body_add != '') { // append a bit to the name
                $this->file_dst_name_body  = $this->file_dst_name_body . $this->file_name_body_add;
                $this->log .= '- file name body add : ' . $this->file_name_body_add . '<br />';
            }
            if ($this->file_safe_name) { // formats the name
                $this->file_dst_name_body = str_replace(array(' ', '-'), array('_','_'), $this->file_dst_name_body) ;
                $this->file_dst_name_body = preg_replace('/[^A-Za-z0-9_]/', '', $this->file_dst_name_body) ;
                $this->log .= '- file name safe format<br />';
            }

            $this->log .= '- destination variables<br />';
            if (empty($this->file_dst_path) || is_null($this->file_dst_path)) {
                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_dst_path         : n/a<br />';
            } else {
                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_dst_path         : ' . $this->file_dst_path . '<br />';
            }
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_dst_name_body    : ' . $this->file_dst_name_body . '<br />';
            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_dst_name_ext     : ' . $this->file_dst_name_ext . '<br />';

            // do we do some image manipulation?
            $image_manipulation  = ($this->file_is_image && (
                                    $this->image_resize 
                                 || $this->image_convert != '' 
                                 || is_numeric($this->image_brightness) 
                                 || is_numeric($this->image_contrast) 
                                 || is_numeric($this->image_threshold) 
                                 || !empty($this->image_tint_color) 
                                 || !empty($this->image_overlay_color) 
                                 || !empty($this->image_text)
                                 || $this->image_greyscale
                                 || $this->image_negative
                                 || !empty($this->image_watermark)
                                 || is_numeric($this->image_rotate)
                                 || is_numeric($this->jpeg_size)
                                 || !empty($this->image_flip)
                                 || !empty($this->image_crop)
                                 || !empty($this->image_border)
                                 || $this->image_frame > 0
                                 || $this->image_bevel > 0
                                 || $this->image_reflection_height));

            if ($image_manipulation) {
                if ($this->image_convert=='') {
                    $this->file_dst_name = $this->file_dst_name_body . (!empty($this->file_dst_name_ext) ? '.' . $this->file_dst_name_ext : '');
                    $this->log .= '- image operation, keep extension<br />';
                } else {
                    $this->file_dst_name = $this->file_dst_name_body . '.' . $this->image_convert;
                    $this->log .= '- image operation, change extension for conversion type<br />';
                }
            } else {
                $this->file_dst_name = $this->file_dst_name_body . (!empty($this->file_dst_name_ext) ? '.' . $this->file_dst_name_ext : '');
                $this->log .= '- no image operation, keep extension<br />';
            }
            
            if (!$return_mode) {
                if (!$this->file_auto_rename) {
                    $this->log .= '- no auto_rename if same filename exists<br />';
                    $this->file_dst_pathname = $this->file_dst_path . $this->file_dst_name;
                } else {
                    $this->log .= '- checking for auto_rename<br />';
                    $this->file_dst_pathname = $this->file_dst_path . $this->file_dst_name;
                    $body     = $this->file_dst_name_body;
                    $cpt = 1;
                    while (@file_exists($this->file_dst_pathname)) {
                        $this->file_dst_name_body = $body . '_' . $cpt;
                        $this->file_dst_name = $this->file_dst_name_body . (!empty($this->file_dst_name_ext) ? '.' . $this->file_dst_name_ext : '');
                        $cpt++;
                        $this->file_dst_pathname = $this->file_dst_path . $this->file_dst_name;
                    }               
                    if ($cpt>1) $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;auto_rename to ' . $this->file_dst_name . '<br />';
                }
            
                $this->log .= '- destination file details<br />';
                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_dst_name         : ' . $this->file_dst_name . '<br />';
                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;file_dst_pathname     : ' . $this->file_dst_pathname . '<br />';

                if ($this->file_overwrite) {
                     $this->log .= '- no overwrite checking<br />';
                } else {
                    if (@file_exists($this->file_dst_pathname)) {
                        $this->processed = false;
                        $this->error = $this->translate('already_exists', array($this->file_dst_name));
                    } else {
                        $this->log .= '- ' . $this->file_dst_name . ' doesn\'t exist already<br />';
                    }
                }
            }
        } else {
            $this->processed = false;
        }

        // if we have already moved the uploaded file, we use the temporary copy as source file, and check if it exists
        if (!empty($this->file_src_temp)) {
            $this->log .= '- use the temp file instead of the original file since it is a second process<br />';
            $this->file_src_pathname   = $this->file_src_temp;
            if (!file_exists($this->file_src_pathname)) {
                $this->processed = false;
                $this->error = $this->translate('temp_file_missing');
            }
        // if we haven't a temp file, and that we do check on uploads, we use is_uploaded_file()
        } else if (!$this->no_upload_check) {
            if (!is_uploaded_file($this->file_src_pathname)) {
                $this->processed = false;
                $this->error = $this->translate('source_missing');
            }
        // otherwise, if we don't check on uploaded files (local file for instance), we use file_exists()
        } else {
            if (!file_exists($this->file_src_pathname)) {
                $this->processed = false;
                $this->error = $this->translate('source_missing');
            }
        }
        
        // checks if the destination directory exists, and attempt to create it        
        if (!$return_mode) {
            if ($this->processed && !file_exists($this->file_dst_path)) {
                if ($this->dir_auto_create) {
                    $this->log .= '- ' . $this->file_dst_path . ' doesn\'t exist. Attempting creation:';
                    if (!$this->rmkdir($this->file_dst_path, $this->dir_chmod)) {
                        $this->log .= ' failed<br />';
                        $this->processed = false;
                        $this->error = $this->translate('destination_dir');
                    } else {
                        $this->log .= ' success<br />';
                    }
                } else {
                    $this->error = $this->translate('destination_dir_missing');
                }
            }

            if ($this->processed && !is_dir($this->file_dst_path)) {
                $this->processed = false;
                $this->error = $this->translate('destination_path_not_dir');
            }

            // checks if the destination directory is writeable, and attempt to make it writeable  
            $hash = md5($this->file_dst_name_body . rand(1, 1000));
            if ($this->processed && !($f = @fopen($this->file_dst_path . $hash . '.' . $this->file_dst_name_ext, 'a+'))) {
                if ($this->dir_auto_chmod) {
                    $this->log .= '- ' . $this->file_dst_path . ' is not writeable. Attempting chmod:';
                    if (!@chmod($this->file_dst_path, $this->dir_chmod)) {
                        $this->log .= ' failed<br />';
                        $this->processed = false;
                        $this->error = $this->translate('destination_dir_write');
                    } else {
                        $this->log .= ' success<br />';
                        if (!($f = @fopen($this->file_dst_path . $hash . '.' . $this->file_dst_name_ext, 'a+'))) { // we re-check
                            $this->processed = false;
                            $this->error = $this->translate('destination_dir_write');
                        } else {
                            @fclose($f);
                        }
                    }                
                } else {
                    $this->processed = false;
                    $this->error = $this->translate('destination_path_write');
                }
            } else {
                if ($this->processed) @fclose($f);
                @unlink($this->file_dst_path . $hash . '.' . $this->file_dst_name_ext);
            }


            // if we have an uploaded file, and if it is the first process, and if we can't access the file directly (open_basedir restriction)
            // then we create a temp file that will be used as the source file in subsequent processes
            // the third condition is there to check if the file is not accessible *directly* (it already has positively gone through is_uploaded_file(), so it exists)
            if (!$this->no_upload_check && empty($this->file_src_temp) && !file_exists($this->file_src_pathname)) {
                $this->log .= '- attempting creating a temp file:';
                $hash = md5($this->file_dst_name_body . rand(1, 1000));
                if (move_uploaded_file($this->file_src_pathname, $this->file_dst_path . $hash . '.' . $this->file_dst_name_ext)) {
                    $this->file_src_pathname = $this->file_dst_path . $hash . '.' . $this->file_dst_name_ext;
                    $this->file_src_temp = $this->file_src_pathname;
                    $this->log .= ' file created<br />';
                    $this->log .= '    temp file is: ' . $this->file_src_temp . '<br />';
                } else {
                    $this->log .= ' failed<br />';
                    $this->processed = false;
                    $this->error = $this->translate('temp_file');
                }
            }
        }
        
        if ($this->processed) {

            if ($image_manipulation) {

                // checks if the source file is readable     
                if ($this->processed && !($f = @fopen($this->file_src_pathname, 'r'))) {
                    $this->processed = false;
                    $this->error = $this->translate('source_not_readable');
                } else {
                    @fclose($f);
                }

                // we now do all the image manipulations
                $this->log .= '- image resizing or conversion wanted<br />';
                if ($this->gdversion()) {
                    switch($this->image_src_type) {
                        case 'jpg':
                            if (!function_exists('imagecreatefromjpeg')) {
                                $this->processed = false;
                                $this->error = $this->translate('no_create_support', array('JPEG'));
                            } else {
                                $image_src = @imagecreatefromjpeg($this->file_src_pathname);
                                if (!$image_src) {
                                    $this->processed = false;
                                    $this->error = $this->translate('create_error', array('JPEG'));
                                } else {
                                    $this->log .= '- source image is JPEG<br />';
                                }
                            }
                            break;
                        case 'png':
                            if (!function_exists('imagecreatefrompng')) {
                                $this->processed = false;
                                $this->error = $this->translate('no_create_support', array('PNG'));
                            } else {
                                $image_src = @imagecreatefrompng($this->file_src_pathname);
                                if (!$image_src) {
                                    $this->processed = false;
                                    $this->error = $this->translate('create_error', array('PNG'));
                                } else {
                                    $this->log .= '- source image is PNG<br />';
                                }
                            }
                            break;
                        case 'gif':
                            if (!function_exists('imagecreatefromgif')) {
                                $this->processed = false;
                                $this->error = $this->translate('no_create_support', array('GIF'));
                            } else {
                                $image_src = @imagecreatefromgif($this->file_src_pathname);
                                if (!$image_src) {
                                    $this->processed = false;
                                    $this->error = $this->translate('create_error', array('GIF'));
                                } else {
                                    $this->log .= '- source image is GIF<br />';
                                }
                            }
                            break;
                        case 'bmp':
                            if (!method_exists($this, 'imagecreatefrombmp')) {
                                $this->processed = false;
                                $this->error = $this->translate('no_create_support', array('BMP'));
                            } else {
                                $image_src = @$this->imagecreatefrombmp($this->file_src_pathname);
                                if (!$image_src) {
                                    $this->processed = false;
                                    $this->error = $this->translate('create_error', array('BMP'));
                                } else {
                                    $this->log .= '- source image is BMP<br />';
                                }
                            }
                            break;
                        default:
                            $this->processed = false;
                            $this->error = $this->translate('source_invalid');
                    }
                } else {
                    $this->processed = false;
                    $this->error = $this->translate('gd_missing');
                }

                if ($this->processed && $image_src) {

                    // we have to set image_convert if it is not already
                    if (empty($this->image_convert)) {
                        $this->log .= '- setting destination file type to ' . $this->file_src_name_ext . '<br />';
                        $this->image_convert = $this->file_src_name_ext;
                    }

                    if (!in_array($this->image_convert, $this->image_supported)) {
                        $this->image_convert = 'jpg';
                    }
                    
                    // we set the default color to be the background color if we don't output in a transparent format
                    if ($this->image_convert != 'png' && $this->image_convert != 'gif' && !empty($this->image_default_color) && empty($this->image_background_color)) $this->image_background_color = $this->image_default_color;
                    if (!empty($this->image_background_color)) $this->image_default_color = $this->image_background_color;
                    if (empty($this->image_default_color)) $this->image_default_color = '#FFFFFF';
                    
                    $this->image_src_x = imagesx($image_src);
                    $this->image_src_y = imagesy($image_src);                  
                    $this->image_dst_x = $this->image_src_x;
                    $this->image_dst_y = $this->image_src_y;
                    $gd_version = $this->gdversion();
                    $ratio_crop = null;

                    if (!imageistruecolor($image_src)) {  // $this->image_src_type == 'gif'
                        $this->log .= '- image is detected as having a palette<br />';
                        $this->image_is_palette = true;
                        $this->image_transparent_color = imagecolortransparent($image_src);
                        if ($this->image_transparent_color >= 0 && imagecolorstotal($image_src) > $this->image_transparent_color) {
                            $this->image_is_transparent = true;
                            //$this->image_transparent_color = imagecolorsforindex($image_src, $this->image_transparent_color);
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;palette image is detected as transparent<br />';
                        } 
                        // if the image has a palette (GIF), we convert it to true color, preserving transparency
                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;convert palette image to true color<br />';
                        $transparent_color = imagecolortransparent($image_src);
                        if ($transparent_color >= 0 && imagecolorstotal($image_src) > $transparent_color) {
                            $rgb = imagecolorsforindex($image_src, $transparent_color);
                            $transparent_color = ($rgb['red'] << 16) | ($rgb['green'] << 8) | $rgb['blue'];
                            imagecolortransparent($image_src, imagecolorallocate($image_src, 0, 0, 0));
                        }
                        $true_color = imagecreatetruecolor($this->image_src_x, $this->image_src_y);
                        imagealphablending($image_src, false);
                        imagesavealpha($image_src, true);
                        imagecopy($true_color, $image_src, 0, 0, 0, 0, $this->image_src_x, $this->image_src_y);
                        $image_src = $this->imagetransfer($true_color, $image_src);
                        if ($transparent_color >= 0) {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;preserve transparency<br />';
                            imagealphablending($image_src, false);
                            imagesavealpha($image_src, true);
                            for ($x = 0; $x < $this->image_src_x; $x++) {
                                for ($y = 0; $y < $this->image_src_y; $y++) {
                                    if (imagecolorat($image_src, $x, $y) == $transparent_color) imagesetpixel($image_src, $x, $y, 127 << 24);
                                }
                            }
                        }
                        $this->image_is_palette = false;
                    }

                    if ($this->image_resize) {
                        $this->log .= '- resizing...<br />';
 
                        if ($this->image_ratio_x) {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;calculate x size<br />';
                            $this->image_dst_x = round(($this->image_src_x * $this->image_y) / $this->image_src_y);
                            $this->image_dst_y = $this->image_y;
                        } else if ($this->image_ratio_y) {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;calculate y size<br />';
                            $this->image_dst_x = $this->image_x;
                            $this->image_dst_y = round(($this->image_src_y * $this->image_x) / $this->image_src_x);
                        } else if (is_numeric($this->image_ratio_pixels)) {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;calculate x/y size to match a number of pixels<br />';
                            $pixels = $this->image_src_y * $this->image_src_x;
                            $diff = sqrt($this->image_ratio_pixels / $pixels);
                            $this->image_dst_x = round($this->image_src_x * $diff);
                            $this->image_dst_y = round($this->image_src_y * $diff);
                        } else if ($this->image_ratio || $this->image_ratio_crop || $this->image_ratio_fill || $this->image_ratio_no_zoom_in || $this->image_ratio_no_zoom_out) {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;check x/y sizes<br />';
                            if ((!$this->image_ratio_no_zoom_in && !$this->image_ratio_no_zoom_out)
                                 || ($this->image_ratio_no_zoom_in && ($this->image_src_x > $this->image_x || $this->image_src_y > $this->image_y))
                                 || ($this->image_ratio_no_zoom_out && $this->image_src_x < $this->image_x && $this->image_src_y < $this->image_y)) {
                                $this->image_dst_x = $this->image_x;
                                $this->image_dst_y = $this->image_y;
                                if ($this->image_ratio_crop) {
                                    if (!is_string($this->image_ratio_crop)) $this->image_ratio_crop = '';
                                    $this->image_ratio_crop = strtolower($this->image_ratio_crop);
                                    if (($this->image_src_x/$this->image_x) > ($this->image_src_y/$this->image_y)) {                                 
                                        $this->image_dst_y = $this->image_y;
                                        $this->image_dst_x = intval($this->image_src_x*($this->image_y / $this->image_src_y));
                                        $ratio_crop = array();
                                        $ratio_crop['x'] = $this->image_dst_x - $this->image_x;
                                        if (strpos($this->image_ratio_crop, 'l') !== false) {
                                            $ratio_crop['l'] = 0;
                                            $ratio_crop['r'] = $ratio_crop['x'];
                                        } else if (strpos($this->image_ratio_crop, 'r') !== false) {
                                            $ratio_crop['l'] = $ratio_crop['x'];
                                            $ratio_crop['r'] = 0;
                                        } else {
                                            $ratio_crop['l'] = round($ratio_crop['x']/2);
                                            $ratio_crop['r'] = $ratio_crop['x'] - $ratio_crop['l'];
                                        }
                                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;ratio_crop_x         : ' . $ratio_crop['x'] . ' (' . $ratio_crop['l'] . ';' . $ratio_crop['r'] . ')<br />';
                                        if (is_null($this->image_crop)) $this->image_crop = array(0, 0, 0, 0);
                                    } else {                 
                                        $this->image_dst_x = $this->image_x;
                                        $this->image_dst_y = intval($this->image_src_y*($this->image_x / $this->image_src_x));
                                        $ratio_crop = array();
                                        $ratio_crop['y'] = $this->image_dst_y - $this->image_y;
                                        if (strpos($this->image_ratio_crop, 't') !== false) {
                                            $ratio_crop['t'] = 0;
                                            $ratio_crop['b'] = $ratio_crop['y'];
                                        } else if (strpos($this->image_ratio_crop, 'b') !== false) {
                                            $ratio_crop['t'] = $ratio_crop['y'];
                                            $ratio_crop['b'] = 0;
                                        } else {
                                            $ratio_crop['t'] = round($ratio_crop['y']/2);
                                            $ratio_crop['b'] = $ratio_crop['y'] - $ratio_crop['t'];
                                        }
                                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;ratio_crop_y         : ' . $ratio_crop['y'] . ' (' . $ratio_crop['t'] . ';' . $ratio_crop['b'] . ')<br />';
                                        if (is_null($this->image_crop)) $this->image_crop = array(0, 0, 0, 0);
                                    }
                                } else if ($this->image_ratio_fill) {
                                    if (!is_string($this->image_ratio_fill)) $this->image_ratio_fill = '';
                                    $this->image_ratio_fill = strtolower($this->image_ratio_fill);
                                    if (($this->image_src_x/$this->image_x) < ($this->image_src_y/$this->image_y)) {                                 
                                        $this->image_dst_y = $this->image_y;
                                        $this->image_dst_x = intval($this->image_src_x*($this->image_y / $this->image_src_y));
                                        $ratio_crop = array();
                                        $ratio_crop['x'] = $this->image_dst_x - $this->image_x;
                                        if (strpos($this->image_ratio_fill, 'l') !== false) {
                                            $ratio_crop['l'] = 0;
                                            $ratio_crop['r'] = $ratio_crop['x'];
                                        } else if (strpos($this->image_ratio_fill, 'r') !== false) {
                                            $ratio_crop['l'] = $ratio_crop['x'];
                                            $ratio_crop['r'] = 0;
                                        } else {
                                            $ratio_crop['l'] = round($ratio_crop['x']/2);
                                            $ratio_crop['r'] = $ratio_crop['x'] - $ratio_crop['l'];
                                        }
                                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;ratio_fill_x         : ' . $ratio_crop['x'] . ' (' . $ratio_crop['l'] . ';' . $ratio_crop['r'] . ')<br />';
                                        if (is_null($this->image_crop)) $this->image_crop = array(0, 0, 0, 0);
                                    } else {                 
                                        $this->image_dst_x = $this->image_x;
                                        $this->image_dst_y = intval($this->image_src_y*($this->image_x / $this->image_src_x));
                                        $ratio_crop = array();
                                        $ratio_crop['y'] = $this->image_dst_y - $this->image_y;
                                        if (strpos($this->image_ratio_fill, 't') !== false) {
                                            $ratio_crop['t'] = 0;
                                            $ratio_crop['b'] = $ratio_crop['y'];
                                        } else if (strpos($this->image_ratio_fill, 'b') !== false) {
                                            $ratio_crop['t'] = $ratio_crop['y'];
                                            $ratio_crop['b'] = 0;
                                        } else {
                                            $ratio_crop['t'] = round($ratio_crop['y']/2);
                                            $ratio_crop['b'] = $ratio_crop['y'] - $ratio_crop['t'];
                                        }
                                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;ratio_fill_y         : ' . $ratio_crop['y'] . ' (' . $ratio_crop['t'] . ';' . $ratio_crop['b'] . ')<br />';
                                        if (is_null($this->image_crop)) $this->image_crop = array(0, 0, 0, 0);
                                    }                                    
                                } else {
                                    if (($this->image_src_x/$this->image_x) > ($this->image_src_y/$this->image_y)) {
                                        $this->image_dst_x = $this->image_x;
                                        $this->image_dst_y = intval($this->image_src_y*($this->image_x / $this->image_src_x));
                                    } else {
                                        $this->image_dst_y = $this->image_y;
                                        $this->image_dst_x = intval($this->image_src_x*($this->image_y / $this->image_src_y));
                                    }
                                }
                            } else {
                                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;doesn\'t calculate x/y sizes<br />';
                                $this->image_dst_x = $this->image_src_x;
                                $this->image_dst_y = $this->image_src_y;
                            }
                        } else {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;use plain sizes<br />';
                            $this->image_dst_x = $this->image_x;
                            $this->image_dst_y = $this->image_y;
                        }

                        $image_dst = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);

                        if ($gd_version >= 2) {
                            $res = imagecopyresampled($image_dst, $image_src, 0, 0, 0, 0, $this->image_dst_x, $this->image_dst_y, $this->image_src_x, $this->image_src_y);
                        } else {
                            $res = imagecopyresized($image_dst, $image_src, 0, 0, 0, 0, $this->image_dst_x, $this->image_dst_y, $this->image_src_x, $this->image_src_y);
                        }

                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;resized image object created<br />';
                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_src_x y        : ' . $this->image_src_x . ' x ' . $this->image_src_y . '<br />';
                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image_dst_x y        : ' . $this->image_dst_x . ' x ' . $this->image_dst_y . '<br />';

                    } else {
                        // we only convert, so we link the dst image to the src image
                        $image_dst = & $image_src;
                    }

                    // crop imag (and also crops if image_ratio_crop is used)
                    if ((!empty($this->image_crop) || !is_null($ratio_crop))) {
                        if (is_array($this->image_crop)) {
                            $vars = $this->image_crop;
                        } else {
                            $vars = explode(' ', $this->image_crop);
                        }
                        if (sizeof($vars) == 4) {
                            $ct = $vars[0]; $cr = $vars[1]; $cb = $vars[2]; $cl = $vars[3];
                        } else if (sizeof($vars) == 2) {
                            $ct = $vars[0]; $cr = $vars[1]; $cb = $vars[0]; $cl = $vars[1];
                        } else {
                            $ct = $vars[0]; $cr = $vars[0]; $cb = $vars[0]; $cl = $vars[0];
                        } 
                        if (strpos($ct, '%')>0) $ct = $this->image_dst_y * (str_replace('%','',$ct) / 100);
                        if (strpos($cr, '%')>0) $cr = $this->image_dst_x * (str_replace('%','',$cr) / 100);
                        if (strpos($cb, '%')>0) $cb = $this->image_dst_y * (str_replace('%','',$cb) / 100);
                        if (strpos($cl, '%')>0) $cl = $this->image_dst_x * (str_replace('%','',$cl) / 100);
                        if (strpos($ct, 'px')>0) $ct = str_replace('px','',$ct);
                        if (strpos($cr, 'px')>0) $cr = str_replace('px','',$cr);
                        if (strpos($cb, 'px')>0) $cb = str_replace('px','',$cb);
                        if (strpos($cl, 'px')>0) $cl = str_replace('px','',$cl);
                        $ct = (int) $ct;
                        $cr = (int) $cr;
                        $cb = (int) $cb;
                        $cl = (int) $cl;
                        // we adjust the cropping if we use image_ratio_crop
                        if (!is_null($ratio_crop)) {
                            if (array_key_exists('t', $ratio_crop)) $ct += $ratio_crop['t'];
                            if (array_key_exists('r', $ratio_crop)) $cr += $ratio_crop['r'];
                            if (array_key_exists('b', $ratio_crop)) $cb += $ratio_crop['b'];
                            if (array_key_exists('l', $ratio_crop)) $cl += $ratio_crop['l'];
                        }
                        $this->log .= '- crop image : ' . $ct . ' ' . $cr . ' ' . $cb . ' ' . $cl . ' <br />';
                        $this->image_dst_x = $this->image_dst_x - $cl - $cr;
                        $this->image_dst_y = $this->image_dst_y - $ct - $cb;
                        if ($this->image_dst_x < 1) $this->image_dst_x = 1;
                        if ($this->image_dst_y < 1) $this->image_dst_y = 1;
                        $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);

                        // we copy the image into the recieving image
                        imagecopy($tmp, $image_dst, 0, 0, $cl, $ct, $this->image_dst_x, $this->image_dst_y);
                      
                        // if we crop with negative margins, we have to make sure the extra bits are the right color, or transparent
                        if ($ct < 0 || $cr < 0 || $cb < 0 || $cl < 0 ) {
                            // use the background color if present
                            if (!empty($this->image_background_color)) {
                                sscanf($this->image_background_color, "#%2x%2x%2x", $red, $green, $blue);
                                $fill = imagecolorallocate($tmp, $red, $green, $blue);       
                            } else {
                                $fill = imagecolorallocatealpha($tmp, 0, 0, 0, 127);
                            }
                            // fills eventual negative margins
                            if ($ct < 0) imagefilledrectangle($tmp, 0, 0, $this->image_dst_x, -$ct, $fill);
                            if ($cr < 0) imagefilledrectangle($tmp, $this->image_dst_x + $cr, 0, $this->image_dst_x, $this->image_dst_y, $fill);
                            if ($cb < 0) imagefilledrectangle($tmp, 0, $this->image_dst_y + $cb, $this->image_dst_x, $this->image_dst_y, $fill);
                            if ($cl < 0) imagefilledrectangle($tmp, 0, 0, -$cl, $this->image_dst_y, $fill);
                        }

                        // we transfert tmp into image_dst
                        $image_dst = $this->imagetransfer($tmp, $image_dst);                     
                    }
                    
                    
                    // flip image
                    if ($gd_version >= 2 && !empty($this->image_flip)) {
                        $this->image_flip = strtolower($this->image_flip);
                        $this->log .= '- flip image : ' . $this->image_flip . '<br />';
                        $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);
                        for ($x = 0; $x < $this->image_dst_x; $x++) {
                            for ($y = 0; $y < $this->image_dst_y; $y++){
                                if (strpos($this->image_flip, 'v') !== false) {
                                    imagecopy($tmp, $image_dst, $this->image_dst_x - $x - 1, $y, $x, $y, 1, 1);
                                } else {
                                    imagecopy($tmp, $image_dst, $x, $this->image_dst_y - $y - 1, $x, $y, 1, 1);
                                }
                            }
                        }
                        // we transfert tmp into image_dst
                        $image_dst = $this->imagetransfer($tmp, $image_dst);  
                    }

                    // rotate image
                    if ($gd_version >= 2 && is_numeric($this->image_rotate)) {
                        if (!in_array($this->image_rotate, array(0, 90, 180, 270))) $this->image_rotate = 0;  
                        if ($this->image_rotate != 0) {
                            if ($this->image_rotate == 90 || $this->image_rotate == 270) {
                                $tmp = $this->imagecreatenew($this->image_dst_y, $this->image_dst_x);
                            } else {
                                $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);
                            }
                            $this->log .= '- rotate image : ' . $this->image_rotate . '<br />';
                            for ($x = 0; $x < $this->image_dst_x; $x++) {
                                for ($y = 0; $y < $this->image_dst_y; $y++){
                                    if ($this->image_rotate == 90) {
                                        imagecopy($tmp, $image_dst, $y, $x, $x, $this->image_dst_y - $y - 1, 1, 1);
                                    } else if ($this->image_rotate == 180) {
                                        imagecopy($tmp, $image_dst, $x, $y, $this->image_dst_x - $x - 1, $this->image_dst_y - $y - 1, 1, 1);
                                    } else if ($this->image_rotate == 270) {
                                        imagecopy($tmp, $image_dst, $y, $x, $this->image_dst_x - $x - 1, $y, 1, 1);
                                    } else {
                                        imagecopy($tmp, $image_dst, $x, $y, $x, $y, 1, 1);
                                    }
                                }
                            }
                            if ($this->image_rotate == 90 || $this->image_rotate == 270) {
                                $t = $this->image_dst_y;
                                $this->image_dst_y = $this->image_dst_x;
                                $this->image_dst_x = $t;
                            }
                            // we transfert tmp into image_dst
                            $image_dst = $this->imagetransfer($tmp, $image_dst);    
                        }                        
                    }

                    // add color overlay
                   if ($gd_version >= 2 && (is_numeric($this->image_overlay_percent) && $this->image_overlay_percent > 0 && !empty($this->image_overlay_color))) {
                        $this->log .= '- apply color overlay<br />';
                        sscanf($this->image_overlay_color, "#%2x%2x%2x", $red, $green, $blue);
                        $filter = imagecreatetruecolor($this->image_dst_x, $this->image_dst_y);
                        $color = imagecolorallocate($filter, $red, $green, $blue);
                        imagefilledrectangle($filter, 0, 0, $this->image_dst_x, $this->image_dst_y, $color);
                        $this->imagecopymergealpha($image_dst, $filter, 0, 0, 0, 0, $this->image_dst_x, $this->image_dst_y, $this->image_overlay_percent);
                        imagedestroy($filter);                     
                    }

                    // add brightness, contrast and tint, turns to greyscale and inverts colors
                    if ($gd_version >= 2 && ($this->image_negative || $this->image_greyscale || is_numeric($this->image_threshold)|| is_numeric($this->image_brightness) || is_numeric($this->image_contrast) || !empty($this->image_tint_color))) {
                        $this->log .= '- apply tint, light, contrast correction, negative, greyscale and threshold<br />';
                        if (!empty($this->image_tint_color)) sscanf($this->image_tint_color, "#%2x%2x%2x", $tint_red, $tint_green, $tint_blue);
                        imagealphablending($image_dst, true);
                        for($y=0; $y < $this->image_dst_y; $y++) {
                            for($x=0; $x < $this->image_dst_x; $x++) {
                                if ($this->image_greyscale) {
                                    $pixel = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                    $r = $g = $b = round((0.2125 * $pixel['red']) + (0.7154 * $pixel['green']) + (0.0721 * $pixel['blue']));    
                                    $color = imagecolorallocatealpha($image_dst, $r, $g, $b, $pixel['alpha']);
                                    imagesetpixel($image_dst, $x, $y, $color);
                                }      
                                if (is_numeric($this->image_threshold)) {
                                    $pixel = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                    $c = (round($pixel['red'] + $pixel['green'] + $pixel['blue']) / 3) - 127;
                                    $r = $g = $b = ($c > $this->image_threshold ? 255 : 0);    
                                    $color = imagecolorallocatealpha($image_dst, $r, $g, $b, $pixel['alpha']);
                                    imagesetpixel($image_dst, $x, $y, $color);
                                }
                                if (is_numeric($this->image_brightness)) {
                                    $pixel = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                    $r = max(min(round($pixel['red'] + (($this->image_brightness * 2))), 255), 0);
                                    $g = max(min(round($pixel['green'] + (($this->image_brightness * 2))), 255), 0);
                                    $b = max(min(round($pixel['blue'] + (($this->image_brightness * 2))), 255), 0);         
                                    $color = imagecolorallocatealpha($image_dst, $r, $g, $b, $pixel['alpha']);
                                    imagesetpixel($image_dst, $x, $y, $color);
                                }
                                if (is_numeric($this->image_contrast)) {
                                    $pixel = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                    $r = max(min(round(($this->image_contrast + 128) * $pixel['red'] / 128), 255), 0);
                                    $g = max(min(round(($this->image_contrast + 128) * $pixel['green'] / 128), 255), 0);
                                    $b = max(min(round(($this->image_contrast + 128) * $pixel['blue'] / 128), 255), 0);         
                                    $color = imagecolorallocatealpha($image_dst, $r, $g, $b, $pixel['alpha']);
                                    imagesetpixel($image_dst, $x, $y, $color);
                                }
                                if (!empty($this->image_tint_color)) {
                                    $pixel = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                    $r = min(round($tint_red * $pixel['red'] / 169), 255);
                                    $g = min(round($tint_green * $pixel['green'] / 169), 255);
                                    $b = min(round($tint_blue * $pixel['blue'] / 169), 255);        
                                    $color = imagecolorallocatealpha($image_dst, $r, $g, $b, $pixel['alpha']);
                                    imagesetpixel($image_dst, $x, $y, $color);
                                }                                
                                if (!empty($this->image_negative)) {
                                    $pixel = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                    $r = round(255 - $pixel['red']);
                                    $g = round(255 - $pixel['green']);
                                    $b = round(255 - $pixel['blue']);   
                                    $color = imagecolorallocatealpha($image_dst, $r, $g, $b, $pixel['alpha']);
                                    imagesetpixel($image_dst, $x, $y, $color);
                                }                                
                            }
                        }
                    }

                    // adds a border
                    if ($gd_version >= 2 && !empty($this->image_border)) {
                        if (is_array($this->image_border)) {
                            $vars = $this->image_border;
                            $this->log .= '- add border : ' . implode(' ', $this->image_border) . '<br />';
                        } else {
                            $this->log .= '- add border : ' . $this->image_border . '<br />';
                            $vars = explode(' ', $this->image_border);
                        }
                        if (sizeof($vars) == 4) {
                            $ct = $vars[0]; $cr = $vars[1]; $cb = $vars[2]; $cl = $vars[3];
                        } else if (sizeof($vars) == 2) {
                            $ct = $vars[0]; $cr = $vars[1]; $cb = $vars[0]; $cl = $vars[1];
                        } else {
                            $ct = $vars[0]; $cr = $vars[0]; $cb = $vars[0]; $cl = $vars[0];
                        } 
                        if (strpos($ct, '%')>0) $ct = $this->image_dst_y * (str_replace('%','',$ct) / 100);
                        if (strpos($cr, '%')>0) $cr = $this->image_dst_x * (str_replace('%','',$cr) / 100);
                        if (strpos($cb, '%')>0) $cb = $this->image_dst_y * (str_replace('%','',$cb) / 100);
                        if (strpos($cl, '%')>0) $cl = $this->image_dst_x * (str_replace('%','',$cl) / 100);
                        if (strpos($ct, 'px')>0) $ct = str_replace('px','',$ct);
                        if (strpos($cr, 'px')>0) $cr = str_replace('px','',$cr);
                        if (strpos($cb, 'px')>0) $cb = str_replace('px','',$cb);
                        if (strpos($cl, 'px')>0) $cl = str_replace('px','',$cl);
                        $ct = (int) $ct;
                        $cr = (int) $cr;
                        $cb = (int) $cb;
                        $cl = (int) $cl;
                        $this->image_dst_x = $this->image_dst_x + $cl + $cr;
                        $this->image_dst_y = $this->image_dst_y + $ct + $cb;
                        if (!empty($this->image_border_color)) sscanf($this->image_border_color, "#%2x%2x%2x", $red, $green, $blue);
                        // we now create an image, that we fill with the border color
                        $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);
                        $background = imagecolorallocatealpha($tmp, $red, $green, $blue, 0);
                        imagefilledrectangle($tmp, 0, 0, $this->image_dst_x, $this->image_dst_y, $background);
                        // we then copy the source image into the new image, without merging so that only the border is actually kept
                        imagecopy($tmp, $image_dst, $cl, $ct, 0, 0, $this->image_dst_x - $cr - $cl, $this->image_dst_y - $cb - $ct);
                        // we transfert tmp into image_dst
                        $image_dst = $this->imagetransfer($tmp, $image_dst);     
                    }
                    
                    // add frame border
                    if (is_numeric($this->image_frame)) {
                        if (is_array($this->image_frame_colors)) {
                            $vars = $this->image_frame_colors;
                            $this->log .= '- add frame : ' . implode(' ', $this->image_frame_colors) . '<br />';
                        } else {
                            $this->log .= '- add frame : ' . $this->image_frame_colors . '<br />';
                            $vars = explode(' ', $this->image_frame_colors);
                        }
                        $nb = sizeof($vars);
                        $this->image_dst_x = $this->image_dst_x + ($nb * 2);
                        $this->image_dst_y = $this->image_dst_y + ($nb * 2);
                        $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);
                        imagecopy($tmp, $image_dst, $nb, $nb, 0, 0, $this->image_dst_x - ($nb * 2), $this->image_dst_y - ($nb * 2));
                        for ($i=0; $i<$nb; $i++) {
                            sscanf($vars[$i], "#%2x%2x%2x", $red, $green, $blue);
                            $c = imagecolorallocate($tmp, $red, $green, $blue);
                            if ($this->image_frame == 1) {
                                imageline($tmp, $i, $i, $this->image_dst_x - $i -1, $i, $c);
                                imageline($tmp, $this->image_dst_x - $i -1, $this->image_dst_y - $i -1, $this->image_dst_x - $i -1, $i, $c);
                                imageline($tmp, $this->image_dst_x - $i -1, $this->image_dst_y - $i -1, $i, $this->image_dst_y - $i -1, $c);
                                imageline($tmp, $i, $i, $i, $this->image_dst_y - $i -1, $c);
                            } else {
                                imageline($tmp, $i, $i, $this->image_dst_x - $i -1, $i, $c);
                                imageline($tmp, $this->image_dst_x - $nb + $i, $this->image_dst_y - $nb + $i, $this->image_dst_x - $nb + $i, $nb - $i, $c);
                                imageline($tmp, $this->image_dst_x - $nb + $i, $this->image_dst_y - $nb + $i, $nb - $i, $this->image_dst_y - $nb + $i, $c);
                                imageline($tmp, $i, $i, $i, $this->image_dst_y - $i -1, $c);
                            }
                        }
                        // we transfert tmp into image_dst
                        $image_dst = $this->imagetransfer($tmp, $image_dst); 
                    }

                    // add bevel border
                    if ($this->image_bevel > 0) {
                        if (empty($this->image_bevel_color1)) $this->image_bevel_color1 = '#FFFFFF'; 
                        if (empty($this->image_bevel_color2)) $this->image_bevel_color2 = '#000000'; 
                        sscanf($this->image_bevel_color1, "#%2x%2x%2x", $red1, $green1, $blue1);
                        sscanf($this->image_bevel_color2, "#%2x%2x%2x", $red2, $green2, $blue2);
                        $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y);
                        imagecopy($tmp, $image_dst, 0, 0, 0, 0, $this->image_dst_x, $this->image_dst_y);
                        imagealphablending($tmp, true);
                        for ($i=0; $i<$this->image_bevel; $i++) {
                            $alpha = round(($i / $this->image_bevel) * 127);
                            $c1 = imagecolorallocatealpha($tmp, $red1, $green1, $blue1, $alpha);
                            $c2 = imagecolorallocatealpha($tmp, $red2, $green2, $blue2, $alpha);
                            imageline($tmp, $i, $i, $this->image_dst_x - $i -1, $i, $c1);
                            imageline($tmp, $this->image_dst_x - $i -1, $this->image_dst_y - $i, $this->image_dst_x - $i -1, $i, $c2);
                            imageline($tmp, $this->image_dst_x - $i -1, $this->image_dst_y - $i -1, $i, $this->image_dst_y - $i -1, $c2);
                            imageline($tmp, $i, $i, $i, $this->image_dst_y - $i -1, $c1);
                        }
                        // we transfert tmp into image_dst
                        $image_dst = $this->imagetransfer($tmp, $image_dst);                       
                    }

                    // add watermark image
                    if ($this->image_watermark!='' && file_exists($this->image_watermark)) {
                        $this->log .= '- add watermark<br />';
                        $this->image_watermark_position = strtolower($this->image_watermark_position);
                        $watermark_info = getimagesize($this->image_watermark);
                        $watermark_type = (array_key_exists(2, $watermark_info) ? $watermark_info[2] : null); // 1 = GIF, 2 = JPG, 3 = PNG
                        $watermark_checked = false;
                        if ($watermark_type == IMAGETYPE_GIF) {
                            if (!function_exists('imagecreatefromgif')) {
                                $this->error = $this->translate('watermark_no_create_support', array('GIF'));
                            } else {
                                $filter = @imagecreatefromgif($this->image_watermark);
                                if (!$filter) {
                                    $this->error = $this->translate('watermark_create_error', array('GIF'));
                                } else {
                                    $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;watermark source image is GIF<br />';
                                    $watermark_checked = true;
                                }
                            }
                        } else if ($watermark_type == IMAGETYPE_JPEG) {
                            if (!function_exists('imagecreatefromjpeg')) {
                                $this->error = $this->translate('watermark_no_create_support', array('JPEG'));
                            } else {
                                $filter = @imagecreatefromjpeg($this->image_watermark);
                                if (!$filter) {
                                    $this->error = $this->translate('watermark_create_error', array('JPEG'));
                                } else {
                                    $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;watermark source image is JPEG<br />';
                                    $watermark_checked = true;
                                }
                            }
                        } else if ($watermark_type == IMAGETYPE_PNG) {
                            if (!function_exists('imagecreatefrompng')) {
                                $this->error = $this->translate('watermark_no_create_support', array('PNG'));
                            } else {
                                $filter = @imagecreatefrompng($this->image_watermark);
                                if (!$filter) {
                                    $this->error = $this->translate('watermark_create_error', array('PNG'));
                                } else {
                                    $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;watermark source image is PNG<br />';
                                    $watermark_checked = true;
                                }
                            }
                        } else if ($watermark_type == IMAGETYPE_BMP) {
                            if (!method_exists($this, 'imagecreatefrombmp')) {
                                $this->error = $this->translate('watermark_no_create_support', array('BMP'));
                            } else {
                                $filter = @$this->imagecreatefrombmp($this->image_watermark);
                                if (!$filter) {
                                    $this->error = $this->translate('watermark_create_error', array('BMP'));
                                } else {
                                    $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;watermark source image is BMP<br />';
                                    $watermark_checked = true;
                                }
                            }
                        } else {
                            $this->error = $this->translate('watermark_invalid');
                        }
                        if ($watermark_checked) {
                            $watermark_width  = imagesx($filter);
                            $watermark_height = imagesy($filter);
                            $watermark_x = 0;
                            $watermark_y = 0;
                            if (is_numeric($this->image_watermark_x)) {
                                if ($this->image_watermark_x < 0) {
                                    $watermark_x = $this->image_dst_x - $watermark_width + $this->image_watermark_x;
                                } else {
                                    $watermark_x = $this->image_watermark_x;
                                }
                            } else {
                                if (strpos($this->image_watermark_position, 'r') !== false) {
                                    $watermark_x = $this->image_dst_x - $watermark_width;
                                } else if (strpos($this->image_watermark_position, 'l') !== false) {
                                    $watermark_x = 0;
                                } else {
                                    $watermark_x = ($this->image_dst_x - $watermark_width) / 2;
                                }
                            }
                            if (is_numeric($this->image_watermark_y)) {
                                if ($this->image_watermark_y < 0) {
                                    $watermark_y = $this->image_dst_y - $watermark_height + $this->image_watermark_y;
                                } else {
                                    $watermark_y = $this->image_watermark_y;
                                }
                            } else {
                                if (strpos($this->image_watermark_position, 'b') !== false) {
                                    $watermark_y = $this->image_dst_y - $watermark_height;
                                } else if (strpos($this->image_watermark_position, 't') !== false) {
                                    $watermark_y = 0;
                                } else {
                                    $watermark_y = ($this->image_dst_y - $watermark_height) / 2;
                                }
                            }
                            imagecopyresampled ($image_dst, $filter, $watermark_x, $watermark_y, 0, 0, $watermark_width, $watermark_height, $watermark_width, $watermark_height);
                        } else {
                            $this->error = $this->translate('watermark_invalid');
                        }                        
                    }

                    // add text
                    if (!empty($this->image_text)) {
                        $this->log .= '- add text<br />';

                        // calculate sizes in human readable format
                        $src_size       = $this->file_src_size / 1024;
                        $src_size_mb    = number_format($src_size / 1024, 1, ".", " ");
                        $src_size_kb    = number_format($src_size, 1, ".", " ");
                        $src_size_human = ($src_size > 1024 ? $src_size_mb . " MB" : $src_size_kb . " kb");
                        
                        $this->image_text = str_replace(
                            array('[src_name]',
                                  '[src_name_body]',
                                  '[src_name_ext]',
                                  '[src_pathname]',
                                  '[src_mime]',
                                  '[src_size]',
                                  '[src_size_kb]',
                                  '[src_size_mb]',
                                  '[src_size_human]',
                                  '[src_x]',
                                  '[src_y]',
                                  '[src_pixels]',
                                  '[src_type]',
                                  '[src_bits]',
                                  '[dst_path]',
                                  '[dst_name_body]',
                                  '[dst_name_ext]',
                                  '[dst_name]',
                                  '[dst_pathname]',
                                  '[dst_x]',
                                  '[dst_y]',
                                  '[date]',
                                  '[time]',
                                  '[host]',
                                  '[server]',
                                  '[ip]',
                                  '[gd_version]'),
                            array($this->file_src_name,
                                  $this->file_src_name_body,
                                  $this->file_src_name_ext,
                                  $this->file_src_pathname,
                                  $this->file_src_mime,
                                  $this->file_src_size,
                                  $src_size_kb,
                                  $src_size_mb,
                                  $src_size_human,
                                  $this->image_src_x,
                                  $this->image_src_y,
                                  $this->image_src_pixels,
                                  $this->image_src_type,
                                  $this->image_src_bits,
                                  $this->file_dst_path,
                                  $this->file_dst_name_body,
                                  $this->file_dst_name_ext,
                                  $this->file_dst_name,
                                  $this->file_dst_pathname,
                                  $this->image_dst_x,
                                  $this->image_dst_y,
                                  date('Y-m-d'),
                                  date('H:i:s'),
                                  $_SERVER['HTTP_HOST'],
                                  $_SERVER['SERVER_NAME'],
                                  $_SERVER['REMOTE_ADDR'],
                                  $this->gdversion(true)),
                            $this->image_text);

                        if (!is_numeric($this->image_text_padding)) $this->image_text_padding = 0;
                        if (!is_numeric($this->image_text_line_spacing)) $this->image_text_line_spacing = 0;
                        if (!is_numeric($this->image_text_padding_x)) $this->image_text_padding_x = $this->image_text_padding;
                        if (!is_numeric($this->image_text_padding_y)) $this->image_text_padding_y = $this->image_text_padding;
                        $this->image_text_position = strtolower($this->image_text_position);
                        $this->image_text_direction = strtolower($this->image_text_direction);
                        $this->image_text_alignment = strtolower($this->image_text_alignment);
                        
                        // if the font is a string, we assume that we might want to load a font
                        if (!is_numeric($this->image_text_font) && strlen($this->image_text_font) > 4 && substr(strtolower($this->image_text_font), -4) == '.gdf') {
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;try to load font ' . $this->image_text_font . '... ';
                            if ($this->image_text_font = @imageloadfont($this->image_text_font)) {
                                $this->log .=  'success<br />';
                            } else {
                                $this->log .=  'error<br />';
                                $this->image_text_font = 5;
                            }
                        }
                  
                        $text = explode("\n", $this->image_text);
                        $char_width = imagefontwidth($this->image_text_font);
                        $char_height = imagefontheight($this->image_text_font);
                        $text_height = 0;
                        $text_width = 0;
                        $line_height = 0;
                        $line_width = 0;
                  
                        foreach ($text as $k => $v) {
                            if ($this->image_text_direction == 'v') {
                                $h = ($char_width * strlen($v));
                                if ($h > $text_height) $text_height = $h;
                                $line_width = $char_height;
                                $text_width += $line_width + ($k < (sizeof($text)-1) ? $this->image_text_line_spacing : 0);                    
                            } else {
                                $w = ($char_width * strlen($v));
                                if ($w > $text_width) $text_width = $w;
                                $line_height = $char_height;                 
                                $text_height += $line_height + ($k < (sizeof($text)-1) ? $this->image_text_line_spacing : 0);                    
                            }
                        }
                        $text_width  += (2 * $this->image_text_padding_x);  
                        $text_height += (2 * $this->image_text_padding_y); 
                        $text_x = 0;
                        $text_y = 0;
                        if (is_numeric($this->image_text_x)) {
                            if ($this->image_text_x < 0) {
                                $text_x = $this->image_dst_x - $text_width + $this->image_text_x;
                            } else {
                                $text_x = $this->image_text_x;
                            }
                        } else {
                            if (strpos($this->image_text_position, 'r') !== false) {
                                $text_x = $this->image_dst_x - $text_width;
                            } else if (strpos($this->image_text_position, 'l') !== false) {
                                $text_x = 0;
                            } else {
                                $text_x = ($this->image_dst_x - $text_width) / 2;
                            }
                        }
                        if (is_numeric($this->image_text_y)) {
                            if ($this->image_text_y < 0) {
                                $text_y = $this->image_dst_y - $text_height + $this->image_text_y;
                            } else {
                                $text_y = $this->image_text_y;
                            }
                        } else {
                            if (strpos($this->image_text_position, 'b') !== false) {
                                $text_y = $this->image_dst_y - $text_height;
                            } else if (strpos($this->image_text_position, 't') !== false) {
                                $text_y = 0;
                            } else {
                                $text_y = ($this->image_dst_y - $text_height) / 2;
                            }
                        }
        
                        // add a background, maybe transparent
                        if (!empty($this->image_text_background)) {
                            sscanf($this->image_text_background, "#%2x%2x%2x", $red, $green, $blue);
                            if ($gd_version >= 2 && (is_numeric($this->image_text_background_percent)) && $this->image_text_background_percent >= 0 && $this->image_text_background_percent <= 100) {
                                $filter = imagecreatetruecolor($text_width, $text_height);
                                $background_color = imagecolorallocate($filter, $red, $green, $blue);
                                imagefilledrectangle($filter, 0, 0, $text_width, $text_height, $background_color);
                                $this->imagecopymergealpha($image_dst, $filter, $text_x, $text_y, 0, 0, $text_width, $text_height, $this->image_text_background_percent);
                                imagedestroy($filter);
                            } else {
                                $background_color = imagecolorallocate($image_dst ,$red, $green, $blue);
                                imagefilledrectangle($image_dst, $text_x, $text_y, $text_x + $text_width, $text_y + $text_height, $background_color);
                            }
                        }

                        $text_x += $this->image_text_padding_x;
                        $text_y += $this->image_text_padding_y;
                        $t_width = $text_width - (2 * $this->image_text_padding_x);
                        $t_height = $text_height - (2 * $this->image_text_padding_y);                            
                        sscanf($this->image_text_color, "#%2x%2x%2x", $red, $green, $blue);

                        // add the text, maybe transparent
                        if ($gd_version >= 2 && (is_numeric($this->image_text_percent)) && $this->image_text_percent >= 0 && $this->image_text_percent <= 100) {
                            if ($t_width < 0) $t_width = 0;
                            if ($t_height < 0) $t_height = 0;
                            $filter = $this->imagecreatenew($t_width, $t_height, false, true);
                            $text_color = imagecolorallocate($filter ,$red, $green, $blue);                            
                
                            foreach ($text as $k => $v) {
                                if ($this->image_text_direction == 'v') {
                                    imagestringup($filter, 
                                                  $this->image_text_font, 
                                                  $k * ($line_width  + ($k > 0 && $k < (sizeof($text)) ? $this->image_text_line_spacing : 0)), 
                                                  $text_height - (2 * $this->image_text_padding_y) - ($this->image_text_alignment == 'l' ? 0 : (($t_height - strlen($v) * $char_width) / ($this->image_text_alignment == 'r' ? 1 : 2))) , 
                                                  $v, 
                                                  $text_color);
                                } else {
                                    imagestring($filter, 
                                                $this->image_text_font, 
                                                ($this->image_text_alignment == 'l' ? 0 : (($t_width - strlen($v) * $char_width) / ($this->image_text_alignment == 'r' ? 1 : 2))), 
                                                $k * ($line_height  + ($k > 0 && $k < (sizeof($text)) ? $this->image_text_line_spacing : 0)), 
                                                $v, 
                                                $text_color);
                                }
                            }
                            $this->imagecopymergealpha($image_dst, $filter, $text_x, $text_y, 0, 0, $t_width, $t_height, $this->image_text_percent);
                            imagedestroy($filter);                            
                            
                        } else {
                            $text_color = imageColorAllocate($image_dst ,$red, $green, $blue);
                            foreach ($text as $k => $v) {
                                if ($this->image_text_direction == 'v') {
                                    imagestringup($image_dst, 
                                                  $this->image_text_font, 
                                                  $text_x + $k * ($line_width  + ($k > 0 && $k < (sizeof($text)) ? $this->image_text_line_spacing : 0)), 
                                                  $text_y + $text_height - (2 * $this->image_text_padding_y) - ($this->image_text_alignment == 'l' ? 0 : (($t_height - strlen($v) * $char_width) / ($this->image_text_alignment == 'r' ? 1 : 2))), 
                                                  $v, 
                                                  $text_color);
                                } else {
                                    imagestring($image_dst, 
                                                $this->image_text_font, 
                                                $text_x + ($this->image_text_alignment == 'l' ? 0 : (($t_width - strlen($v) * $char_width) / ($this->image_text_alignment == 'r' ? 1 : 2))), 
                                                $text_y + $k * ($line_height  + ($k > 0 && $k < (sizeof($text)) ? $this->image_text_line_spacing : 0)), 
                                                $v, 
                                                $text_color);
                                }
                            }
                        }
                    }

                    // add a reflection
                    if ($this->image_reflection_height) {
                        $this->log .= '- add reflection : ' . $this->image_reflection_height . '<br />';
                        // we decode image_reflection_height, which can be a integer, a string in pixels or percentage
                        $image_reflection_height = $this->image_reflection_height;
                        if (strpos($image_reflection_height, '%')>0) $image_reflection_height = $this->image_dst_y * (str_replace('%','',$image_reflection_height / 100));
                        if (strpos($image_reflection_height, 'px')>0) $image_reflection_height = str_replace('px','',$image_reflection_height);
                        $image_reflection_height = (int) $image_reflection_height;
                        if ($image_reflection_height > $this->image_dst_y) $image_reflection_height = $this->image_dst_y;
                        if (empty($this->image_reflection_opacity)) $this->image_reflection_opacity = 60; 
                        // create the new destination image
                        $tmp = $this->imagecreatenew($this->image_dst_x, $this->image_dst_y + $image_reflection_height + $this->image_reflection_space, true);
                        $transparency = $this->image_reflection_opacity;

                        // copy the original image
                        imagecopy($tmp, $image_dst, 0, 0, 0, 0, $this->image_dst_x, $this->image_dst_y + ($this->image_reflection_space < 0 ? $this->image_reflection_space : 0));

                        // we have to make sure the extra bit is the right color, or transparent
                        if ($image_reflection_height + $this->image_reflection_space > 0) {
                            // use the background color if present
                            if (!empty($this->image_background_color)) {
                                sscanf($this->image_background_color, "#%2x%2x%2x", $red, $green, $blue);
                                $fill = imagecolorallocate($tmp, $red, $green, $blue);       
                            } else {
                                $fill = imagecolorallocatealpha($tmp, 0, 0, 0, 127);
                            }
                            // fill in from the edge of the extra bit
                            imagefill($tmp, round($this->image_dst_x / 2), $this->image_dst_y + $image_reflection_height + $this->image_reflection_space - 1, $fill);
                        }

                        // copy the reflection
                        for ($y = 0; $y < $image_reflection_height; $y++) {
                            for ($x = 0; $x < $this->image_dst_x; $x++) {
                                $pixel_b = imagecolorsforindex($tmp, imagecolorat($tmp, $x, $y + $this->image_dst_y + $this->image_reflection_space));
                                $pixel_o = imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $this->image_dst_y - $y - 1 + ($this->image_reflection_space < 0 ? $this->image_reflection_space : 0)));
                                $alpha_o = 1 - ($pixel_o['alpha'] / 127);
                                $alpha_b = 1 - ($pixel_b['alpha'] / 127);
                                $opacity = $alpha_o * $transparency / 100;
                                if ($opacity > 0) {
                                    $red   = round((($pixel_o['red']   * $opacity) + ($pixel_b['red']  ) * $alpha_b) / ($alpha_b + $opacity));
                                    $green = round((($pixel_o['green'] * $opacity) + ($pixel_b['green']) * $alpha_b) / ($alpha_b + $opacity));
                                    $blue  = round((($pixel_o['blue']  * $opacity) + ($pixel_b['blue'] ) * $alpha_b) / ($alpha_b + $opacity));
                                    $alpha = ($opacity + $alpha_b);
                                    if ($alpha > 1) $alpha = 1;
                                    $alpha =  round((1 - $alpha) * 127);
                                    $color = imagecolorallocatealpha($tmp, $red, $green, $blue, $alpha);
                                    imagesetpixel($tmp, $x, $y + $this->image_dst_y + $this->image_reflection_space, $color);
                                }
                            }
                            if ($transparency > 0) $transparency = $transparency - ($this->image_reflection_opacity / $image_reflection_height);
                        }

                        // copy the resulting image into the destination image
                        $this->image_dst_y = $this->image_dst_y + $image_reflection_height + $this->image_reflection_space;
                        $image_dst = $this->imagetransfer($tmp, $image_dst);
                    }

                    // reduce the JPEG image to a set desired size
                    if (is_numeric($this->jpeg_size) && $this->jpeg_size > 0 && ($this->image_convert == 'jpeg' || $this->image_convert == 'jpg')) {
                        // inspired by: JPEGReducer class version 1, 25 November 2004, Author: Huda M ElMatsani, justhuda at netscape dot net
                        $this->log .= '- JPEG desired file size : ' . $this->jpeg_size . '<br />';
                        // calculate size of each image. 75%, 50%, and 25% quality
                        ob_start(); imagejpeg($image_dst,'',75);  $buffer = ob_get_contents(); ob_end_clean();
                        $size75 = strlen($buffer);
                        ob_start(); imagejpeg($image_dst,'',50);  $buffer = ob_get_contents(); ob_end_clean();
                        $size50 = strlen($buffer);
                        ob_start(); imagejpeg($image_dst,'',25);  $buffer = ob_get_contents(); ob_end_clean();
                        $size25 = strlen($buffer);
                
                        // calculate gradient of size reduction by quality
                        $mgrad1 = 25 / ($size50-$size25);
                        $mgrad2 = 25 / ($size75-$size50);
                        $mgrad3 = 50 / ($size75-$size25);
                        $mgrad  = ($mgrad1 + $mgrad2 + $mgrad3) / 3;
                        // result of approx. quality factor for expected size
                        $q_factor = round($mgrad * ($this->jpeg_size - $size50) + 50);
                
                        if ($q_factor<1) {
                            $this->jpeg_quality=1;
                        } elseif ($q_factor>100) {
                            $this->jpeg_quality=100;
                        } else {
                            $this->jpeg_quality=$q_factor;
                        }
                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;JPEG quality factor set to ' . $this->jpeg_quality . '<br />';
                    }

                    // converts image from true color, and fix transparency if needed
                    $this->log .= '- converting...<br />';
                    switch($this->image_convert) {
                        case 'gif':
                            // if the image is true color, we convert it to a palette
                            if (imageistruecolor($image_dst)) {
                                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;true color to palette<br />';
                                // creates a black and white mask
                                $mask = array(array());
                                for ($x = 0; $x < $this->image_dst_x; $x++) {
                                    for ($y = 0; $y < $this->image_dst_y; $y++) {
                                        $pixel = @imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));      
                                        $mask[$x][$y] = $pixel['alpha'];
                                    }
                                }    
                                sscanf($this->image_default_color, "#%2x%2x%2x", $red, $green, $blue);
                                // first, we merge the image with the background color, so we know which colors we will have
                                for ($x = 0; $x < $this->image_dst_x; $x++) {
                                    for ($y = 0; $y < $this->image_dst_y; $y++) {
                                        if ($mask[$x][$y] > 0){
                                            // we have some transparency. we combine the color with the default color
                                            $pixel = @imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                            $alpha = ($mask[$x][$y] / 127);
                                            $pixel['red'] = round(($pixel['red'] * (1 -$alpha) + $red * ($alpha)));
                                            $pixel['green'] = round(($pixel['green'] * (1 -$alpha) + $green * ($alpha)));
                                            $pixel['blue'] = round(($pixel['blue'] * (1 -$alpha) + $blue * ($alpha)));
                                            $color = imagecolorallocate($image_dst, $pixel['red'], $pixel['green'], $pixel['blue']);
                                            imagesetpixel($image_dst, $x, $y, $color);
                                        }
                                    }
                                }                                
                                // transfrom the true color image into palette, with it merged default color in
                                // we will have the best color possible, including the background
                                if (empty($this->image_background_color)) {
                                    imagetruecolortopalette($image_dst, true, 255);
                                    $transparency = imagecolorallocate($image_dst, 254, 1, 253);
                                    imagecolortransparent($image_dst, $transparency);
                                    // make the transparent areas transparent
                                    for ($x = 0; $x < $this->image_dst_x; $x++) {
                                        for ($y = 0; $y < $this->image_dst_y; $y++) {
                                            // we test wether we have enough opacity to justify keeping the color
                                            if ($mask[$x][$y] > 120) imagesetpixel($image_dst, $x, $y, $transparency);
                                        }
                                    }
                                }
                                unset($mask);
                            }
                            break;
                        case 'jpg':
                        case 'bmp':
                            // if the image doesn't support any transparency, then we merge it with the default color
                            $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;fills in transparency with default color<br />';
                                sscanf($this->image_default_color, "#%2x%2x%2x", $red, $green, $blue);
                                $transparency = imagecolorallocate($image_dst, $red, $green, $blue);
                                // make the transaparent areas transparent
                                for ($x = 0; $x < $this->image_dst_x; $x++) {
                                    for ($y = 0; $y < $this->image_dst_y; $y++) {
                                        // we test wether we have some transparency, in which case we will merge the colors
                                        $pixel = @imagecolorsforindex($image_dst, imagecolorat($image_dst, $x, $y));
                                        if ($pixel['alpha'] == 127) {
                                            // we have full transparency. we make the pixel transparent
                                            imagesetpixel($image_dst, $x, $y, $transparency);
                                        } else if ($pixel['alpha'] > 0) {
                                            // we have some transparency. we combine the color with the default color
                                            $alpha = ($pixel['alpha'] / 127);
                                            $pixel['red'] = round(($pixel['red'] * (1 -$alpha) + $red * ($alpha)));
                                            $pixel['green'] = round(($pixel['green'] * (1 -$alpha) + $green * ($alpha)));
                                            $pixel['blue'] = round(($pixel['blue'] * (1 -$alpha) + $blue * ($alpha)));
                                            $color = imagecolorclosest($image_dst, $pixel['red'], $pixel['green'], $pixel['blue']);
                                            imagesetpixel($image_dst, $x, $y, $color);
                                        }
                                    }
                                }                             
                            
                            break;
                        default: 
                            break;
                    }

                    // outputs image
                    $this->log .= '- saving image...<br />';
                    switch($this->image_convert) {
                        case 'jpeg':
                        case 'jpg':
                            if (!$return_mode) {
                                $result = @imagejpeg($image_dst, $this->file_dst_pathname, $this->jpeg_quality);
                            } else {
                                ob_start();        
                                $result = @imagejpeg($image_dst, '', $this->jpeg_quality);
                                $return_content = ob_get_contents();
                                ob_end_clean();
                            }
                            if (!$result) {
                                $this->processed = false;
                                $this->error = $this->translate('file_create', array('JPEG'));
                            } else {
                                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;JPEG image created<br />';
                            }
                            break;
                        case 'png':
                            imagealphablending( $image_dst, false );
                            imagesavealpha( $image_dst, true );
                            if (!$return_mode) {
                                $result = @imagepng($image_dst, $this->file_dst_pathname);
                            } else {
                                ob_start();        
                                $result = @imagepng($image_dst);
                                $return_content = ob_get_contents();
                                ob_end_clean();
                            }
                            if (!$result) {
                                $this->processed = false;
                                $this->error = $this->translate('file_create', array('PNG'));
                            } else {
                                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;PNG image created<br />';
                            }
                            break;
                        case 'gif':
                            if (!$return_mode) {
                                $result = @imagegif($image_dst, $this->file_dst_pathname);
                            } else {
                                ob_start();        
                                $result = @imagegif($image_dst);
                                $return_content = ob_get_contents();
                                ob_end_clean();
                            }
                            if (!$result) {
                                $this->processed = false;
                                $this->error = $this->translate('file_create', array('GIF'));
                            } else {
                                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;GIF image created<br />';
                            }
                            break;
                        case 'bmp':
                            if (!$return_mode) {
                                $result = $this->imagebmp($image_dst, $this->file_dst_pathname);
                            } else {
                                ob_start();        
                                $result = $this->imagebmp($image_dst);
                                $return_content = ob_get_contents();
                                ob_end_clean();
                            }
                            if (!$result) {
                                $this->processed = false;
                                $this->error = $this->translate('file_create', array('BMP'));
                            } else {
                                $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;BMP image created<br />';
                            }
                            break;
                            
                        default:
                            $this->processed = false;
                            $this->error = $this->translate('no_conversion_type');
                    }
                    if ($this->processed) {
                        if (is_resource($image_src)) imagedestroy($image_src);
                        if (is_resource($image_dst)) imagedestroy($image_dst);
                        $this->log .= '&nbsp;&nbsp;&nbsp;&nbsp;image objects destroyed<br />';
                    }
                }              

            } else {
                $this->log .= '- no image processing wanted<br />';

                if (!$return_mode) {
		            // copy the file to its final destination. we don't use move_uploaded_file here
                    // if we happen to have open_basedir restrictions, it is a temp file that we copy, not the original uploaded file
                    if (!copy($this->file_src_pathname, $this->file_dst_pathname)) {
                        $this->processed = false;
                        $this->error = $this->translate('copy_failed');
                    }
                } else {
                    // returns the file, so that its content can be received by the caller
                    $return_content = @file_get_contents($this->file_src_pathname);
                    if ($return_content === FALSE) {
                        $this->processed = false;
                        $this->error = $this->translate('reading_failed');
                    }
                }
            }
        }

        if ($this->processed) {
            $this->log .= '- <b>process OK</b><br />';

        }
        // we reinit all the vars
        $this->init();

        // we may return the image content 
        if ($return_mode) return $return_content;
        
    }

    /**
     * Deletes the uploaded file from its temporary location
     *
     * When PHP uploads a file, it stores it in a temporary location.
     * When you {@link process} the file, you actually copy the resulting file to the given location, it doesn't alter the original file.
     * Once you have processed the file as many times as you wanted, you can delete the uploaded file.
     * If there is open_basedir restrictions, the uploaded file is in fact a temporary file
     *
     * You might want not to use this function if you work on local files, as it will delete the source file
     *
     * @access public
     */
    function clean() {
        $this->log .= '<b>cleanup</b><br />';
        $this->log .= '- delete temp file '  . $this->file_src_pathname . '<br />';
        @unlink($this->file_src_pathname);
    }


    /**
     * Opens a BMP image
     *
     * This function has been written by DHKold, and is used with permission of the author
     *
     * @access public
     */
    function imagecreatefrombmp($filename) {
        if (! $f1 = fopen($filename,"rb")) return false;

        $file = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
        if ($file['file_type'] != 19778) return false;

        $bmp = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
                      '/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
                      '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
        $bmp['colors'] = pow(2,$bmp['bits_per_pixel']);
        if ($bmp['size_bitmap'] == 0) $bmp['size_bitmap'] = $file['file_size'] - $file['bitmap_offset'];
        $bmp['bytes_per_pixel'] = $bmp['bits_per_pixel']/8;
        $bmp['bytes_per_pixel2'] = ceil($bmp['bytes_per_pixel']);
        $bmp['decal'] = ($bmp['width']*$bmp['bytes_per_pixel']/4);
        $bmp['decal'] -= floor($bmp['width']*$bmp['bytes_per_pixel']/4);
        $bmp['decal'] = 4-(4*$bmp['decal']);
        if ($bmp['decal'] == 4) $bmp['decal'] = 0;

        $palette = array();
        if ($bmp['colors'] < 16777216) {
            $palette = unpack('V'.$bmp['colors'], fread($f1,$bmp['colors']*4));
        }

        $im = fread($f1,$bmp['size_bitmap']);
        $vide = chr(0);

        $res = imagecreatetruecolor($bmp['width'],$bmp['height']);
        $P = 0;
        $Y = $bmp['height']-1;
        while ($Y >= 0) {
            $X=0;
            while ($X < $bmp['width']) {
                if ($bmp['bits_per_pixel'] == 24)
                    $color = unpack("V",substr($im,$P,3).$vide);
                elseif ($bmp['bits_per_pixel'] == 16) { 
                    $color = unpack("n",substr($im,$P,2));
                    $color[1] = $palette[$color[1]+1];
                } elseif ($bmp['bits_per_pixel'] == 8) { 
                    $color = unpack("n",$vide.substr($im,$P,1));
                    $color[1] = $palette[$color[1]+1];
                } elseif ($bmp['bits_per_pixel'] == 4) {
                    $color = unpack("n",$vide.substr($im,floor($P),1));
                    if (($P*2)%2 == 0) $color[1] = ($color[1] >> 4) ; else $color[1] = ($color[1] & 0x0F);
                    $color[1] = $palette[$color[1]+1];
                } elseif ($bmp['bits_per_pixel'] == 1)  {
                    $color = unpack("n",$vide.substr($im,floor($P),1));
                    if     (($P*8)%8 == 0) $color[1] =  $color[1]        >>7;
                    elseif (($P*8)%8 == 1) $color[1] = ($color[1] & 0x40)>>6;
                    elseif (($P*8)%8 == 2) $color[1] = ($color[1] & 0x20)>>5;
                    elseif (($P*8)%8 == 3) $color[1] = ($color[1] & 0x10)>>4;
                    elseif (($P*8)%8 == 4) $color[1] = ($color[1] & 0x8)>>3;
                    elseif (($P*8)%8 == 5) $color[1] = ($color[1] & 0x4)>>2;
                    elseif (($P*8)%8 == 6) $color[1] = ($color[1] & 0x2)>>1;
                    elseif (($P*8)%8 == 7) $color[1] = ($color[1] & 0x1);
                    $color[1] = $palette[$color[1]+1];
                } else
                    return FALSE;
                imagesetpixel($res,$X,$Y,$color[1]);
                $X++;
                $P += $bmp['bytes_per_pixel'];
            }
            $Y--;
            $P+=$bmp['decal'];
        }
        fclose($f1);
        return $res;
    }
    
    /**
     * Saves a BMP image
     *
     * This function has been published on the PHP website, and can be used freely
     *
     * @access public
     */    
    function imagebmp(&$im, $filename = "") {      
        
        if (!$im) return false;
        $w = imagesx($im);
        $h = imagesy($im);
        $result = '';

        // if the image is not true color, we convert it first
        if (!imageistruecolor($im)) {
            $tmp = imagecreatetruecolor($w, $h); 
            imagecopy($tmp, $im, 0, 0, 0, 0, $w, $h); 
            imagedestroy($im);
            $im = & $tmp;   
        }
           
        $biBPLine = $w * 3;
        $biStride = ($biBPLine + 3) & ~3;
        $biSizeImage = $biStride * $h;
        $bfOffBits = 54;
        $bfSize = $bfOffBits + $biSizeImage;
               
        $result .= substr('BM', 0, 2);
        $result .=  pack ('VvvV', $bfSize, 0, 0, $bfOffBits);
        $result .= pack ('VVVvvVVVVVV', 40, $w, $h, 1, 24, 0, $biSizeImage, 0, 0, 0, 0);
               
        $numpad = $biStride - $biBPLine;
        for ($y = $h - 1; $y >= 0; --$y) {
            for ($x = 0; $x < $w; ++$x) {
                $col = imagecolorat ($im, $x, $y);
                $result .=  substr(pack ('V', $col), 0, 3);
            }
            for ($i = 0; $i < $numpad; ++$i)
                $result .= pack ('C', 0);
        }

        if($filename==""){
            echo $result;
        } else {
            $file = fopen($filename, "wb");
            fwrite($file, $result);
            fclose($file);
        }
        return true;        
    }
}

?>
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