var $image_library = 'gd2'; // Can be: imagemagick, netpbm, gd, gd2

var $library_path = '';

var $dynamic_output = FALSE; // Whether to send to browser or write to disk

var $source_image = '';

var $new_image = '';

var $width = '';

var $height = '';

var $quality = '90';

var $create_thumb = FALSE;

var $thumb_marker = '_thumb';

var $maintain_ratio = TRUE; // Whether to maintain aspect ratio when resizing or use hard values

var $master_dim = 'auto'; // auto, height, or width. Determines what to use as the master dimension

var $rotation_angle = '';

var $x_axis = '';

var $y_axis = '';

// Watermark Vars

var $wm_text = ''; // Watermark text if graphic is not used

var $wm_type = 'text'; // Type of watermarking. Options: text/overlay

var $wm_x_transp = 4;

var $wm_y_transp = 4;

var $wm_overlay_path = ''; // Watermark image path

var $wm_font_path = ''; // TT font

var $wm_font_size = 17; // Font size (different versions of GD will either use points or pixels)

var $wm_vrt_alignment = 'B'; // Vertical alignment: T M B

var $wm_hor_alignment = 'C'; // Horizontal alignment: L R C

var $wm_padding = 0; // Padding around text

var $wm_hor_offset = 0; // Lets you push text to the right

var $wm_vrt_offset = 0; // Lets you push text down

var $wm_font_color = '#ffffff'; // Text color

var $wm_shadow_color = ''; // Dropshadow color

var $wm_shadow_distance = 2; // Dropshadow distance

var $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image

// Private Vars

var $source_folder = '';

var $dest_folder = '';

var $mime_type = '';

var $orig_width = '';

var $orig_height = '';

var $image_type = '';

var $size_str = '';

var $full_src_path = '';

var $full_dst_path = '';

var $create_fnc = 'imagecreatetruecolor';

var $copy_fnc = 'imagecopyresampled';

var $error_msg = array();

var $wm_use_drop_shadow = FALSE;

var $wm_use_truetype = FALSE;

/**

public function __construct($props = array())

{

if (count($props) > 0)

{

$this->initialize($props);

}

log_message('debug', "Image Lib Class Initialized");

}

// --------------------------------------------------------------------

/**

function clear()

{

$props = array('source_folder', 'dest_folder', 'source_image', 'full_src_path', 'full_dst_path', 'new_image', 'image_type', 'size_str', 'quality', 'orig_width', 'orig_height', 'rotation_angle', 'x_axis', 'y_axis', 'create_fnc', 'copy_fnc', 'wm_overlay_path', 'wm_use_truetype', 'dynamic_output', 'wm_font_size', 'wm_text', 'wm_vrt_alignment', 'wm_hor_alignment', 'wm_padding', 'wm_hor_offset', 'wm_vrt_offset', 'wm_font_color', 'wm_use_drop_shadow', 'wm_shadow_color', 'wm_shadow_distance', 'wm_opacity');

foreach ($props as $val)

{

$this->$val = '';

}

// special consideration for master_dim

$this->master_dim = 'auto';

}

// --------------------------------------------------------------------

/**

function initialize($props = array())

{

/*

if (count($props) > 0)

{

foreach ($props as $key => $val)

{

$this->$key = $val;

}

}

/*

if ($this->source_image == '')

{

$this->set_error('imglib_source_image_required');

return FALSE;

}

/*

if ( ! function_exists('getimagesize'))

{

$this->set_error('imglib_gd_required_for_props');

return FALSE;

}

$this->image_library = strtolower($this->image_library);

/*

if (function_exists('realpath') AND @realpath($this->source_image) !== FALSE)

{

$full_source_path = str_replace("\\", "/", realpath($this->source_image));

}

else

{

$full_source_path = $this->source_image;

}

$x = explode('/', $full_source_path);

$this->source_image = end($x);

$this->source_folder = str_replace($this->source_image, '', $full_source_path);

// Set the Image Properties

if ( ! $this->get_image_properties($this->source_folder.$this->source_image))

{

return FALSE;

}

/*

if ($this->new_image == '')

{

$this->dest_image = $this->source_image;

$this->dest_folder = $this->source_folder;

}

else

{

if (strpos($this->new_image, '/') === FALSE)

{

$this->dest_folder = $this->source_folder;

$this->dest_image = $this->new_image;

}

else

{

if (function_exists('realpath') AND @realpath($this->new_image) !== FALSE)

{

$full_dest_path = str_replace("\\", "/", realpath($this->new_image));

}

else

{

$full_dest_path = $this->new_image;

}

// Is there a file name?

if ( ! preg_match("#\.(jpg|jpeg|gif|png)$#i", $full_dest_path))

{

$this->dest_folder = $full_dest_path.'/';

$this->dest_image = $this->source_image;

}

else

{

$x = explode('/', $full_dest_path);

$this->dest_image = end($x);

$this->dest_folder = str_replace($this->dest_image, '', $full_dest_path);

}

}

}

/*

if ($this->create_thumb === FALSE OR $this->thumb_marker == '')

{

$this->thumb_marker = '';

}

$xp = $this->explode_name($this->dest_image);

$filename = $xp['name'];

$file_ext = $xp['ext'];

$this->full_src_path = $this->source_folder.$this->source_image;

$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;

/*

if ($this->maintain_ratio === TRUE && ($this->width != '' AND $this->height != ''))

{

$this->image_reproportion();

}

/*

if ($this->width == '')

$this->width = $this->orig_width;

if ($this->height == '')

$this->height = $this->orig_height;

// Set the quality

$this->quality = trim(str_replace("%", "", $this->quality));

if ($this->quality == '' OR $this->quality == 0 OR ! is_numeric($this->quality))

$this->quality = 90;

// Set the x/y coordinates

$this->x_axis = ($this->x_axis == '' OR ! is_numeric($this->x_axis)) ? 0 : $this->x_axis;

$this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis;

// Watermark-related Stuff...

if ($this->wm_font_color != '')

{

if (strlen($this->wm_font_color) == 6)

{

$this->wm_font_color = '#'.$this->wm_font_color;

}

}

if ($this->wm_shadow_color != '')

{

if (strlen($this->wm_shadow_color) == 6)

{

$this->wm_shadow_color = '#'.$this->wm_shadow_color;

}

}

if ($this->wm_overlay_path != '')

{

$this->wm_overlay_path = str_replace("\\", "/", realpath($this->wm_overlay_path));

}

if ($this->wm_shadow_color != '')

{

$this->wm_use_drop_shadow = TRUE;

}

if ($this->wm_font_path != '')

{

$this->wm_use_truetype = TRUE;

}

return TRUE;

}

// --------------------------------------------------------------------

/**

function resize()

{

$protocol = 'image_process_'.$this->image_library;

if (preg_match('/gd2$/i', $protocol))

{

$protocol = 'image_process_gd';

}

return $this->$protocol('resize');

}

// --------------------------------------------------------------------

/**

function crop()

{

$protocol = 'image_process_'.$this->image_library;

if (preg_match('/gd2$/i', $protocol))

{

$protocol = 'image_process_gd';

}

return $this->$protocol('crop');

}

// --------------------------------------------------------------------

/**

function rotate()

{

// Allowed rotation values

$degs = array(90, 180, 270, 'vrt', 'hor');

if ($this->rotation_angle == '' OR ! in_array($this->rotation_angle, $degs))

{

$this->set_error('imglib_rotation_angle_required');

return FALSE;

}

// Reassign the width and height

if ($this->rotation_angle == 90 OR $this->rotation_angle == 270)

{

$this->width = $this->orig_height;

$this->height = $this->orig_width;

}

else

{

$this->width = $this->orig_width;

$this->height = $this->orig_height;

}

// Choose resizing function

if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm')

{

$protocol = 'image_process_'.$this->image_library;

return $this->$protocol('rotate');

}

if ($this->rotation_angle == 'hor' OR $this->rotation_angle == 'vrt')

{

return $this->image_mirror_gd();

}

else

{

return $this->image_rotate_gd();

}

}

// --------------------------------------------------------------------

/**

function image_process_gd($action = 'resize')

{

$v2_override = FALSE;

// If the target width/height match the source, AND if the new file name is not equal to the old file name

// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.

if ($this->dynamic_output === FALSE)

{

if ($this->orig_width == $this->width AND $this->orig_height == $this->height)

{

if ($this->source_image != $this->new_image)

{

if (@copy($this->full_src_path, $this->full_dst_path))

{

@chmod($this->full_dst_path, FILE_WRITE_MODE);

}

}

return TRUE;

}

}

// Let's set up our values based on the action

if ($action == 'crop')

{

// Reassign the source width/height if cropping

$this->orig_width = $this->width;

$this->orig_height = $this->height;

// GD 2.0 has a cropping bug so we'll test for it

if ($this->gd_version() !== FALSE)

{

$gd_version = str_replace('0', '', $this->gd_version());

$v2_override = ($gd_version == 2) ? TRUE : FALSE;

}

}

else

{

// If resizing the x/y axis must be zero

$this->x_axis = 0;

$this->y_axis = 0;

}

// Create the image handle

if ( ! ($src_img = $this->image_create_gd()))

{

return FALSE;

}

// Create The Image

//

// old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"

// it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment

// below should that ever prove inaccurate.

//

// if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE)

if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor'))

{

$create = 'imagecreatetruecolor';

$copy = 'imagecopyresampled';

}

else

{

$create = 'imagecreate';

$copy = 'imagecopyresized';

}

$dst_img = $create($this->width, $this->height);

if ($this->image_type == 3) // png we can actually preserve transparency

{

imagealphablending($dst_img, FALSE);

imagesavealpha($dst_img, TRUE);

}

$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);

// Show the image

if ($this->dynamic_output == TRUE)

{

$this->image_display_gd($dst_img);

}

else

{

// Or save it

if ( ! $this->image_save_gd($dst_img))

{

return FALSE;

}

}

// Kill the file handles

imagedestroy($dst_img);

imagedestroy($src_img);

// Set the file to 777

@chmod($this->full_dst_path, FILE_WRITE_MODE);

return TRUE;

}

// --------------------------------------------------------------------

/**

function image_process_imagemagick($action = 'resize')

{

// Do we have a vaild library path?

if ($this->library_path == '')

{

$this->set_error('imglib_libpath_invalid');

return FALSE;

}

if ( ! preg_match("/convert$/i", $this->library_path))

{

$this->library_path = rtrim($this->library_path, '/').'/';

$this->library_path .= 'convert';

}

// Execute the command

$cmd = $this->library_path." -quality ".$this->quality;

if ($action == 'crop')

{

$cmd .= " -crop ".$this->width."x".$this->height."+".$this->x_axis."+".$this->y_axis." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";

}

elseif ($action == 'rotate')

{

switch ($this->rotation_angle)

{

case 'hor' : $angle = '-flop';

break;

case 'vrt' : $angle = '-flip';

break;

default : $angle = '-rotate '.$this->rotation_angle;

break;

}

$cmd .= " ".$angle." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";

}

else // Resize

{

$cmd .= " -resize ".$this->width."x".$this->height." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";

}

$retval = 1;

@exec($cmd, $output, $retval);

// Did it work?

if ($retval > 0)

{

$this->set_error('imglib_image_process_failed');

return FALSE;

}

// Set the file to 777

@chmod($this->full_dst_path, FILE_WRITE_MODE);

return TRUE;

}

// --------------------------------------------------------------------

/**

function image_process_netpbm($action = 'resize')

{

if ($this->library_path == '')

{

$this->set_error('imglib_libpath_invalid');

return FALSE;

}

// Build the resizing command

switch ($this->image_type)

{

case 1 :

$cmd_in = 'giftopnm';

$cmd_out = 'ppmtogif';

break;

case 2 :

$cmd_in = 'jpegtopnm';

$cmd_out = 'ppmtojpeg';

break;

case 3 :

$cmd_in = 'pngtopnm';

$cmd_out = 'ppmtopng';

break;

}

if ($action == 'crop')

{

$cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height;

}

elseif ($action == 'rotate')

{

switch ($this->rotation_angle)

{

case 90 : $angle = 'r270';

break;

case 180 : $angle = 'r180';

break;

case 270 : $angle = 'r90';

break;

case 'vrt' : $angle = 'tb';

break;

case 'hor' : $angle = 'lr';

break;

}

$cmd_inner = 'pnmflip -'.$angle.' ';

}

else // Resize

{

$cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height;

}

$cmd = $this->library_path.$cmd_in.' '.$this->full_src_path.' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp';

$retval = 1;

@exec($cmd, $output, $retval);

// Did it work?

if ($retval > 0)

{

$this->set_error('imglib_image_process_failed');

return FALSE;

}

// With NetPBM we have to create a temporary image.

// If you try manipulating the original it fails so

// we have to rename the temp file.

copy ($this->dest_folder.'netpbm.tmp', $this->full_dst_path);

unlink ($this->dest_folder.'netpbm.tmp');

@chmod($this->full_dst_path, FILE_WRITE_MODE);

return TRUE;

}

// --------------------------------------------------------------------

/**

function image_rotate_gd()

{

// Create the image handle

if ( ! ($src_img = $this->image_create_gd()))

{

return FALSE;

}

// Set the background color

// This won't work with transparent PNG files so we are

// going to have to figure out how to determine the color

// of the alpha channel in a future release.

$white = imagecolorallocate($src_img, 255, 255, 255);

// Rotate it!

$dst_img = imagerotate($src_img, $this->rotation_angle, $white);

// Save the Image

if ($this->dynamic_output == TRUE)

{

$this->image_display_gd($dst_img);

}

else

{

// Or save it

if ( ! $this->image_save_gd($dst_img))

{

return FALSE;

}

}

// Kill the file handles

imagedestroy($dst_img);

imagedestroy($src_img);

// Set the file to 777

@chmod($this->full_dst_path, FILE_WRITE_MODE);

return TRUE;

}

// --------------------------------------------------------------------

/**

function image_mirror_gd()

{

if ( ! $src_img = $this->image_create_gd())

{

return FALSE;

}

$width = $this->orig_width;

$height = $this->orig_height;

if ($this->rotation_angle == 'hor')

{

for ($i = 0; $i < $height; $i++)

{

$left = 0;

$right = $width-1;

while ($left < $right)

{

$cl = imagecolorat($src_img, $left, $i);

$cr = imagecolorat($src_img, $right, $i);

imagesetpixel($src_img, $left, $i, $cr);

imagesetpixel($src_img, $right, $i, $cl);

$left++;

$right--;

}

}

}

else

{

for ($i = 0; $i < $width; $i++)

{

$top = 0;

$bot = $height-1;

while ($top < $bot)

{

$ct = imagecolorat($src_img, $i, $top);

$cb = imagecolorat($src_img, $i, $bot);

imagesetpixel($src_img, $i, $top, $cb);

imagesetpixel($src_img, $i, $bot, $ct);

$top++;

$bot--;

}

}

}

// Show the image

if ($this->dynamic_output == TRUE)

{

$this->image_display_gd($src_img);

}

else

{

// Or save it

if ( ! $this->image_save_gd($src_img))

{

return FALSE;

}

}

// Kill the file handles

imagedestroy($src_img);

// Set the file to 777

@chmod($this->full_dst_path, FILE_WRITE_MODE);

return TRUE;

}

// --------------------------------------------------------------------

/**

function watermark()

{

if ($this->wm_type == 'overlay')

{

return $this->overlay_watermark();

}

else

{

return $this->text_watermark();

}

}

// --------------------------------------------------------------------

/**

function overlay_watermark()

{

if ( ! function_exists('imagecolortransparent'))

{

$this->set_error('imglib_gd_required');

return FALSE;

}

// Fetch source image properties

$this->get_image_properties();

// Fetch watermark image properties

$props = $this->get_image_properties($this->wm_overlay_path, TRUE);

$wm_img_type = $props['image_type'];

$wm_width = $props['width'];

$wm_height = $props['height'];

// Create two image resources

$wm_img = $this->image_create_gd($this->wm_overlay_path, $wm_img_type);

$src_img = $this->image_create_gd($this->full_src_path);

// Reverse the offset if necessary

// When the image is positioned at the bottom

// we don't want the vertical offset to push it

// further down. We want the reverse, so we'll

// invert the offset. Same with the horizontal

// offset when the image is at the right

$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1));

$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1));

if ($this->wm_vrt_alignment == 'B')

$this->wm_vrt_offset = $this->wm_vrt_offset * -1;

if ($this->wm_hor_alignment == 'R')

$this->wm_hor_offset = $this->wm_hor_offset * -1;

// Set the base x and y axis values

$x_axis = $this->wm_hor_offset + $this->wm_padding;

$y_axis = $this->wm_vrt_offset + $this->wm_padding;

// Set the vertical position

switch ($this->wm_vrt_alignment)

{

case 'T':

break;

case 'M': $y_axis += ($this->orig_height / 2) - ($wm_height / 2);

break;

case 'B': $y_axis += $this->orig_height - $wm_height;

break;

}

// Set the horizontal position

switch ($this->wm_hor_alignment)

{

case 'L':

break;

case 'C': $x_axis += ($this->orig_width / 2) - ($wm_width / 2);

break;

case 'R': $x_axis += $this->orig_width - $wm_width;

break;

}

// Build the finalized image

if ($wm_img_type == 3 AND function_exists('imagealphablending'))

{

@imagealphablending($src_img, TRUE);

}

// Set RGB values for text and shadow

$rgba = imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp);

$alpha = ($rgba & 0x7F000000) >> 24;

// make a best guess as to whether we're dealing with an image with alpha transparency or no/binary transparency

if ($alpha > 0)

{

// copy the image directly, the image's alpha transparency being the sole determinant of blending

imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height);

}

else

{

// set our RGB value from above to be transparent and merge the images with the specified opacity

imagecolortransparent($wm_img, imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp));

imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);

}

// Output the image

if ($this->dynamic_output == TRUE)

{

$this->image_display_gd($src_img);

}

else

{

if ( ! $this->image_save_gd($src_img))

{

return FALSE;

}

}

imagedestroy($src_img);

imagedestroy($wm_img);

return TRUE;

}

// --------------------------------------------------------------------

/**

function text_watermark()

{

if ( ! ($src_img = $this->image_create_gd()))

{

return FALSE;

}

if ($this->wm_use_truetype == TRUE AND ! file_exists($this->wm_font_path))

{

$this->set_error('imglib_missing_font');

return FALSE;

}

// Fetch source image properties

$this->get_image_properties();

// Set RGB values for text and shadow