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<?php
# ========================================================================#
#
# This work is licensed under the Creative Commons Attribution 3.0 Unported
# License. To view a copy of this license,
# visit http://creativecommons.org/licenses/by/3.0/ or send a letter to
# Creative Commons, 444 Castro Street, Suite 900, Mountain View, California,
# 94041, USA.
#
# All rights reserved.
#
# Author: Jarrod Oberto
# Version: 1.5.1
# Date: 10-05-11
# Purpose: Provide tools for image manipulation using GD
# Param In: See functions.
# Param Out: Produces a resized image
# Requires : Requires PHP GD library.
# Usage Example:
# include("lib/php_image_magician.php");
# $magicianObj = new resize('images/car.jpg');
# $magicianObj -> resizeImage(150, 100, 0);
# $magicianObj -> saveImage('images/car_small.jpg', 100);
#
# - See end of doc for more examples -
#
# Supported file types include: jpg, png, gif, bmp, psd (read)
#
#
#
# The following functions are taken from phpThumb() [available from
# http://phpthumb.sourceforge.net], and are used with written permission
# from James Heinrich.
# - GD2BMPstring
# - GetPixelColor
# - LittleEndian2String
#
# The following functions are from Marc Hibbins and are used with written
# permission (are also under the Attribution-ShareAlike
# [http://creativecommons.org/licenses/by-sa/3.0/] license.
# -
#
# PhpPsdReader is used with written permission from Tim de Koning.
# [http://www.kingsquare.nl/phppsdreader]
#
#
#
# Modificatoin history
# Date Initials Ver Description
# 10-05-11 J.C.O 0.0 Initial build
# 01-06-11 J.C.O 0.1.1 * Added reflections
# * Added Rounded corners
# * You can now use PNG interlacing
# * Added shadow
# * Added caption box
# * Added vintage filter
# * Added dynamic image resizing (resize on the fly)
# * minor bug fixes
# 05-06-11 J.C.O 0.1.1.1 * Fixed undefined variables
# 17-06-11 J.C.O 0.1.2 * Added image_batch_class.php class
# * Minor bug fixes
# 26-07-11 J.C.O 0.1.4 * Added support for external images
# * Can now set the crop poisition
# 03-08-11 J.C.O 0.1.5 * Added reset() method to reset resource to
# original input file.
# * Added method addTextToCaptionBox() to
# simplify adding text to a caption box.
# * Added experimental writeIPTC. (not finished)
# * Added experimental readIPTC. (not finished)
# 11-08-11 J.C.O * Added initial border presets.
# 30-08-11 J.C.O * Added 'auto' crop option to crop portrait
# images near the top.
# 08-09-11 J.C.O * Added cropImage() method to allow standalone
# cropping.
# 17-09-11 J.C.O * Added setCropFromTop() set method - set the
# percentage to crop from the top when using
# crop 'auto' option.
# * Added setTransparency() set method - allows you
# to turn transparency off (like when saving
# as a jpg).
# * Added setFillColor() set method - set the
# background color to use instead of transparency.
# 05-11-11 J.C.O 0.1.5.1 * Fixed interlacing option
# 0-07-12 J.C.O 1.0
#
# Known issues & Limitations:
# -------------------------------
# Not so much an issue, the image is destroyed on the deconstruct rather than
# when we have finished with it. The reason for this is that we don't know
# when we're finished with it as you can both save the image and display
# it directly to the screen (imagedestroy($this->imageResized))
#
# Opening BMP files is slow. A test with 884 bmp files processed in a loop
# takes forever - over 5 min. This test inlcuded opening the file, then
# getting and displaying its width and height.
#
# $forceStretch:
# -------------------------------
# On by default.
# $forceStretch can be disabled by calling method setForceStretch with false
# parameter. If disabled, if an images original size is smaller than the size
# specified by the user, the original size will be used. This is useful when
# dealing with small images.
#
# If enabled, images smaller than the size specified will be stretched to
# that size.
#
# Tips:
# -------------------------------
# * If you're resizing a transparent png and saving it as a jpg, set
# $keepTransparency to false with: $magicianObj->setTransparency(false);
#
# FEATURES:
# * EASY TO USE
# * BMP SUPPORT (read & write)
# * PSD (photoshop) support (read)
# * RESIZE IMAGES
# - Preserve transparency (png, gif)
# - Apply sharpening (jpg) (requires PHP >= 5.1.0)
# - Set image quality (jpg, png)
# - Resize modes:
# - exact size
# - resize by width (auto height)
# - resize by height (auto width)
# - auto (automatically determine the best of the above modes to use)
# - crop - resize as best as it can then crop the rest
# - Force stretching of smaller images (upscale)
# * APPLY FILTERS
# - Convert to grey scale
# - Convert to black and white
# - Convert to sepia
# - Convert to negative
# * ROTATE IMAGES
# - Rotate using predefined "left", "right", or "180"; or any custom degree amount
# * EXTRACT EXIF DATA (requires exif module)
# - make
# - model
# - date
# - exposure
# - aperture
# - f-stop
# - iso
# - focal length
# - exposure program
# - metering mode
# - flash status
# - creator
# - copyright
# * ADD WATERMARK
# - Specify exact x, y placement
# - Or, specify using one of the 9 pre-defined placements such as "tl"
# (for top left), "m" (for middle), "br" (for bottom right)
# - also specify padding from edge amount (optional).
# - Set opacity of watermark (png).
# * ADD BORDER
# * USE HEX WHEN SPECIFYING COLORS (eg: #ffffff)
# * SAVE IMAGE OR OUTPUT TO SCREEN
#
#
# ========================================================================#
class imageLib {
private $fileName;
private $image;
protected $imageResized;
private $widthOriginal; # Always be the original width
private $heightOriginal;
private $width; # Current width (width after resize)
private $height;
private $imageSize;
private $fileExtension;
private $debug = true;
private $errorArray = array();
private $forceStretch = true;
private $aggresiveSharpening = false;
private $transparentArray = array( '.png', '.gif' );
private $keepTransparency = true;
private $fillColorArray = array( 'r' => 255, 'g' => 255, 'b' => 255 );
private $sharpenArray = array( 'jpg' );
private $psdReaderPath;
private $filterOverlayPath;
private $isInterlace;
private $captionBoxPositionArray = array();
private $fontDir = 'fonts';
private $cropFromTopPercent = 10;
## --------------------------------------------------------
function __construct($fileName)
# Author: Jarrod Oberto
# Date: 27-02-08
# Purpose: Constructor
# Param in: $fileName: File name and path.
# Param out: n/a
# Reference:
# Notes:
#
{
if ( ! $this->testGDInstalled())
{
if ($this->debug)
{
throw new Exception('The GD Library is not installed.');
}
else
{
throw new Exception();
}
};
$this->initialise();
// *** Save the image file name. Only store this incase you want to display it
$this->fileName = $fileName;
$this->fileExtension = fix_strtolower(strrchr($fileName, '.'));
// *** Open up the file
$this->image = $this->openImage($fileName);
// *** Assign here so we don't modify the original
$this->imageResized = $this->image;
// *** If file is an image
if ($this->testIsImage($this->image))
{
// *** Get width and height
$this->width = imagesx($this->image);
$this->widthOriginal = imagesx($this->image);
$this->height = imagesy($this->image);
$this->heightOriginal = imagesy($this->image);
/* Added 15-09-08
* Get the filesize using this build in method.
* Stores an array of size
*
* $this->imageSize[1] = width
* $this->imageSize[2] = height
* $this->imageSize[3] = width x height
*
*/
$this->imageSize = getimagesize($this->fileName);
}
else
{
$this->errorArray[] = 'File is not an image';
}
}
## --------------------------------------------------------
private function initialise()
{
$this->psdReaderPath = dirname(__FILE__) . '/classPhpPsdReader.php';
$this->filterOverlayPath = dirname(__FILE__) . '/filters';
// *** Set if image should be interlaced or not.
$this->isInterlace = false;
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Resize
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function resizeImage($newWidth, $newHeight, $option = 0, $sharpen = false, $autoRotate = false)
# Author: Jarrod Oberto
# Date: 27-02-08
# Purpose: Resizes the image
# Param in: $newWidth:
# $newHeight:
# $option: 0 / exact = defined size;
# 1 / portrait = keep aspect set height;
# 2 / landscape = keep aspect set width;
# 3 / auto = auto;
# 4 / crop= resize and crop;
#
# $option can also be an array containing options for
# cropping. E.G., array('crop', 'r')
#
# This array only applies to 'crop' and the 'r' refers to
# "crop right". Other value include; tl, t, tr, l, m (default),
# r, bl, b, br, or you can specify your own co-ords (which
# isn't recommended.
#
# $sharpen: true: sharpen (jpg only);
# false: don't sharpen
# Param out: n/a
# Reference:
# Notes: To clarify the $option input:
# 0 = The exact height and width dimensions you set.
# 1 = Whatever height is passed in will be the height that
# is set. The width will be calculated and set automatically
# to a the value that keeps the original aspect ratio.
# 2 = The same but based on the width. We try make the image the
# biggest size we can while stil fitting inside the box size
# 3 = Depending whether the image is landscape or portrait, this
# will automatically determine whether to resize via
# dimension 1,2 or 0
# 4 = Will resize and then crop the image for best fit
#
# forceStretch can be applied to options 1,2,3 and 4
#
{
// *** We can pass in an array of options to change the crop position
$cropPos = 'm';
if (is_array($option) && fix_strtolower($option[0]) == 'crop')
{
$cropPos = $option[1]; # get the crop option
}
else
{
if (strpos($option, '-') !== false)
{
// *** Or pass in a hyphen seperated option
$optionPiecesArray = explode('-', $option);
$cropPos = end($optionPiecesArray);
}
}
// *** Check the option is valid
$option = $this->prepOption($option);
// *** Make sure the file passed in is valid
if ( ! $this->image)
{
if ($this->debug)
{
throw new Exception('file ' . $this->getFileName() . ' is missing or invalid');
}
else
{
throw new Exception();
}
};
// *** Get optimal width and height - based on $option
$dimensionsArray = $this->getDimensions($newWidth, $newHeight, $option);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
// *** Resample - create image canvas of x, y size
$this->imageResized = imagecreatetruecolor($optimalWidth, $optimalHeight);
$this->keepTransparancy($optimalWidth, $optimalHeight, $this->imageResized);
imagecopyresampled($this->imageResized, $this->image, 0, 0, 0, 0, $optimalWidth, $optimalHeight, $this->width, $this->height);
// *** If '4', then crop too
if ($option == 4 || $option == 'crop')
{
if (($optimalWidth >= $newWidth && $optimalHeight >= $newHeight))
{
$this->crop($optimalWidth, $optimalHeight, $newWidth, $newHeight, $cropPos);
}
}
// *** If Rotate.
if ($autoRotate)
{
$exifData = $this->getExif(false);
if (count($exifData) > 0)
{
switch ($exifData['orientation'])
{
case 8:
$this->imageResized = imagerotate($this->imageResized, 90, 0);
break;
case 3:
$this->imageResized = imagerotate($this->imageResized, 180, 0);
break;
case 6:
$this->imageResized = imagerotate($this->imageResized, -90, 0);
break;
}
}
}
// *** Sharpen image (if jpg and the user wishes to do so)
if ($sharpen && in_array($this->fileExtension, $this->sharpenArray))
{
// *** Sharpen
$this->sharpen();
}
}
## --------------------------------------------------------
public function cropImage($newWidth, $newHeight, $cropPos = 'm')
# Author: Jarrod Oberto
# Date: 08-09-11
# Purpose: Crops the image
# Param in: $newWidth: crop with
# $newHeight: crop height
# $cropPos: Can be any of the following:
# tl, t, tr, l, m, r, bl, b, br, auto
# Or:
# a custom position such as '30x50'
# Param out: n/a
# Reference:
# Notes:
#
{
// *** Make sure the file passed in is valid
if ( ! $this->image)
{
if ($this->debug)
{
throw new Exception('file ' . $this->getFileName() . ' is missing or invalid');
}
else
{
throw new Exception();
}
};
$this->imageResized = $this->image;
$this->crop($this->width, $this->height, $newWidth, $newHeight, $cropPos);
}
## --------------------------------------------------------
private function keepTransparancy($width, $height, $im)
# Author: Jarrod Oberto
# Date: 08-04-11
# Purpose: Keep transparency for png and gif image
# Param in:
# Param out: n/a
# Reference:
# Notes:
#
{
// *** If PNG, perform some transparency retention actions (gif untested)
if (in_array($this->fileExtension, $this->transparentArray) && $this->keepTransparency)
{
imagealphablending($im, false);
imagesavealpha($im, true);
$transparent = imagecolorallocatealpha($im, 255, 255, 255, 127);
imagefilledrectangle($im, 0, 0, $width, $height, $transparent);
}
else
{
$color = imagecolorallocate($im, $this->fillColorArray['r'], $this->fillColorArray['g'], $this->fillColorArray['b']);
imagefilledrectangle($im, 0, 0, $width, $height, $color);
}
}
## --------------------------------------------------------
private function crop($optimalWidth, $optimalHeight, $newWidth, $newHeight, $cropPos)
# Author: Jarrod Oberto
# Date: 15-09-08
# Purpose: Crops the image
# Param in: $newWidth:
# $newHeight:
# Param out: n/a
# Reference:
# Notes:
#
{
// *** Get cropping co-ordinates
$cropArray = $this->getCropPlacing($optimalWidth, $optimalHeight, $newWidth, $newHeight, $cropPos);
$cropStartX = $cropArray['x'];
$cropStartY = $cropArray['y'];
// *** Crop this bad boy
$crop = imagecreatetruecolor($newWidth, $newHeight);
$this->keepTransparancy($optimalWidth, $optimalHeight, $crop);
imagecopyresampled($crop, $this->imageResized, 0, 0, $cropStartX, $cropStartY, $newWidth, $newHeight, $newWidth, $newHeight);
$this->imageResized = $crop;
// *** Set new width and height to our variables
$this->width = $newWidth;
$this->height = $newHeight;
}
## --------------------------------------------------------
private function getCropPlacing($optimalWidth, $optimalHeight, $newWidth, $newHeight, $pos = 'm')
#
# Author: Jarrod Oberto
# Date: July 11
# Purpose: Set the cropping area.
# Params in:
# Params out: (array) the crop x and y co-ordinates.
# Notes: When specifying the exact pixel crop position (eg 10x15), be
# very careful as it's easy to crop out of the image leaving
# black borders.
#
{
$pos = fix_strtolower($pos);
// *** If co-ords have been entered
if (strstr($pos, 'x'))
{
$pos = str_replace(' ', '', $pos);
$xyArray = explode('x', $pos);
list($cropStartX, $cropStartY) = $xyArray;
}
else
{
switch ($pos)
{
case 'tl':
$cropStartX = 0;
$cropStartY = 0;
break;
case 't':
$cropStartX = ($optimalWidth / 2) - ($newWidth / 2);
$cropStartY = 0;
break;
case 'tr':
$cropStartX = $optimalWidth - $newWidth;
$cropStartY = 0;
break;
case 'l':
$cropStartX = 0;
$cropStartY = ($optimalHeight / 2) - ($newHeight / 2);
break;
case 'm':
$cropStartX = ($optimalWidth / 2) - ($newWidth / 2);
$cropStartY = ($optimalHeight / 2) - ($newHeight / 2);
break;
case 'r':
$cropStartX = $optimalWidth - $newWidth;
$cropStartY = ($optimalHeight / 2) - ($newHeight / 2);
break;
case 'bl':
$cropStartX = 0;
$cropStartY = $optimalHeight - $newHeight;
break;
case 'b':
$cropStartX = ($optimalWidth / 2) - ($newWidth / 2);
$cropStartY = $optimalHeight - $newHeight;
break;
case 'br':
$cropStartX = $optimalWidth - $newWidth;
$cropStartY = $optimalHeight - $newHeight;
break;
case 'auto':
// *** If image is a portrait crop from top, not center. v1.5
if ($optimalHeight > $optimalWidth)
{
$cropStartX = ($optimalWidth / 2) - ($newWidth / 2);
$cropStartY = ($this->cropFromTopPercent / 100) * $optimalHeight;
}
else
{
// *** Else crop from the center
$cropStartX = ($optimalWidth / 2) - ($newWidth / 2);
$cropStartY = ($optimalHeight / 2) - ($newHeight / 2);
}
break;
default:
// *** Default to center
$cropStartX = ($optimalWidth / 2) - ($newWidth / 2);
$cropStartY = ($optimalHeight / 2) - ($newHeight / 2);
break;
}
}
return array( 'x' => $cropStartX, 'y' => $cropStartY );
}
## --------------------------------------------------------
private function getDimensions($newWidth, $newHeight, $option)
# Author: Jarrod Oberto
# Date: 17-11-09
# Purpose: Get new image dimensions based on user specificaions
# Param in: $newWidth:
# $newHeight:
# Param out: Array of new width and height values
# Reference:
# Notes: If $option = 3 then this function is call recursivly
#
# To clarify the $option input:
# 0 = The exact height and width dimensions you set.
# 1 = Whatever height is passed in will be the height that
# is set. The width will be calculated and set automatically
# to a the value that keeps the original aspect ratio.
# 2 = The same but based on the width.
# 3 = Depending whether the image is landscape or portrait, this
# will automatically determine whether to resize via
# dimension 1,2 or 0.
# 4 = Resize the image as much as possible, then crop the
# remainder.
{
switch (strval($option))
{
case '0':
case 'exact':
$optimalWidth = $newWidth;
$optimalHeight = $newHeight;
break;
case '1':
case 'portrait':
$dimensionsArray = $this->getSizeByFixedHeight($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
break;
case '2':
case 'landscape':
$dimensionsArray = $this->getSizeByFixedWidth($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
break;
case '3':
case 'auto':
$dimensionsArray = $this->getSizeByAuto($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
break;
case '4':
case 'crop':
$dimensionsArray = $this->getOptimalCrop($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
break;
}
return array( 'optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight );
}
## --------------------------------------------------------
private function getSizeByFixedHeight($newWidth, $newHeight)
{
// *** If forcing is off...
if ( ! $this->forceStretch)
{
// *** ...check if actual height is less than target height
if ($this->height < $newHeight)
{
return array( 'optimalWidth' => $this->width, 'optimalHeight' => $this->height );
}
}
$ratio = $this->width / $this->height;
$newWidth = $newHeight * $ratio;
//return $newWidth;
return array( 'optimalWidth' => $newWidth, 'optimalHeight' => $newHeight );
}
## --------------------------------------------------------
private function getSizeByFixedWidth($newWidth, $newHeight)
{
// *** If forcing is off...
if ( ! $this->forceStretch)
{
// *** ...check if actual width is less than target width
if ($this->width < $newWidth)
{
return array( 'optimalWidth' => $this->width, 'optimalHeight' => $this->height );
}
}
$ratio = $this->height / $this->width;
$newHeight = $newWidth * $ratio;
//return $newHeight;
return array( 'optimalWidth' => $newWidth, 'optimalHeight' => $newHeight );
}
## --------------------------------------------------------
private function getSizeByAuto($newWidth, $newHeight)
# Author: Jarrod Oberto
# Date: 19-08-08
# Purpose: Depending on the height, choose to resize by 0, 1, or 2
# Param in: The new height and new width
# Notes:
#
{
// *** If forcing is off...
if ( ! $this->forceStretch)
{
// *** ...check if actual size is less than target size
if ($this->width < $newWidth && $this->height < $newHeight)
{
return array( 'optimalWidth' => $this->width, 'optimalHeight' => $this->height );
}
}
if ($this->height < $this->width)
// *** Image to be resized is wider (landscape)
{
//$optimalWidth = $newWidth;
//$optimalHeight= $this->getSizeByFixedWidth($newWidth);
$dimensionsArray = $this->getSizeByFixedWidth($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
}
elseif ($this->height > $this->width)
// *** Image to be resized is taller (portrait)
{
//$optimalWidth = $this->getSizeByFixedHeight($newHeight);
//$optimalHeight= $newHeight;
$dimensionsArray = $this->getSizeByFixedHeight($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
}
else
// *** Image to be resizerd is a square
{
if ($newHeight < $newWidth)
{
//$optimalWidth = $newWidth;
//$optimalHeight= $this->getSizeByFixedWidth($newWidth);
$dimensionsArray = $this->getSizeByFixedWidth($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
}
else
{
if ($newHeight > $newWidth)
{
//$optimalWidth = $this->getSizeByFixedHeight($newHeight);
//$optimalHeight= $newHeight;
$dimensionsArray = $this->getSizeByFixedHeight($newWidth, $newHeight);
$optimalWidth = $dimensionsArray['optimalWidth'];
$optimalHeight = $dimensionsArray['optimalHeight'];
}
else
{
// *** Sqaure being resized to a square
$optimalWidth = $newWidth;
$optimalHeight = $newHeight;
}
}
}
return array( 'optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight );
}
## --------------------------------------------------------
private function getOptimalCrop($newWidth, $newHeight)
# Author: Jarrod Oberto
# Date: 17-11-09
# Purpose: Get optimal crop dimensions
# Param in: width and height as requested by user (fig 3)
# Param out: Array of optimal width and height (fig 2)
# Reference:
# Notes: The optimal width and height return are not the same as the
# same as the width and height passed in. For example:
#
#
# |-----------------| |------------| |-------|
# | | => |**| |**| => | |
# | | |**| |**| | |
# | | |------------| |-------|
# |-----------------|
# original optimal crop
# size size size
# Fig 1 2 3
#
# 300 x 250 150 x 125 150 x 100
#
# The optimal size is the smallest size (that is closest to the crop size)
# while retaining proportion/ratio.
#
# The crop size is the optimal size that has been cropped on one axis to
# make the image the exact size specified by the user.
#
# * represent cropped area
#
{
// *** If forcing is off...
if ( ! $this->forceStretch)
{
// *** ...check if actual size is less than target size
if ($this->width < $newWidth && $this->height < $newHeight)
{
return array( 'optimalWidth' => $this->width, 'optimalHeight' => $this->height );
}
}
$heightRatio = $this->height / $newHeight;
$widthRatio = $this->width / $newWidth;
if ($heightRatio < $widthRatio)
{
$optimalRatio = $heightRatio;
}
else
{
$optimalRatio = $widthRatio;
}
$optimalHeight = round($this->height / $optimalRatio);
$optimalWidth = round($this->width / $optimalRatio);
return array( 'optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight );
}
## --------------------------------------------------------
private function sharpen()
# Author: Jarrod Oberto
# Date: 08 04 2011
# Purpose: Sharpen image
# Param in: n/a
# Param out: n/a
# Reference:
# Notes:
# Credit: Incorporates Joe Lencioni (August 6, 2008) code
{
if (version_compare(PHP_VERSION, '5.1.0') >= 0)
{
// ***
if ($this->aggresiveSharpening)
{ # A more aggressive sharpening solution
$sharpenMatrix = array( array( -1, -1, -1 ),
array( -1, 16, -1 ),
array( -1, -1, -1 ) );
$divisor = 8;
$offset = 0;
imageconvolution($this->imageResized, $sharpenMatrix, $divisor, $offset);
}
else # More subtle and personally more desirable
{
$sharpness = $this->findSharp($this->widthOriginal, $this->width);
$sharpenMatrix = array(
array( -1, -2, -1 ),
array( -2, $sharpness + 12, -2 ), //Lessen the effect of a filter by increasing the value in the center cell
array( -1, -2, -1 )
);
$divisor = $sharpness; // adjusts brightness
$offset = 0;
imageconvolution($this->imageResized, $sharpenMatrix, $divisor, $offset);
}
}
else
{
if ($this->debug)
{
throw new Exception('Sharpening required PHP 5.1.0 or greater.');
}
}
}
## --------------------------------------------------------
private function sharpen2($level)
{
$sharpenMatrix = array(
array( $level, $level, $level ),
array( $level, (8 * $level) + 1, $level ), //Lessen the effect of a filter by increasing the value in the center cell
array( $level, $level, $level )
);
}
## --------------------------------------------------------
private function findSharp($orig, $final)
# Author: Ryan Rud (http://adryrun.com)
# Purpose: Find optimal sharpness
# Param in: n/a
# Param out: n/a
# Reference:
# Notes:
#
{
$final = $final * (750.0 / $orig);
$a = 52;
$b = -0.27810650887573124;
$c = .00047337278106508946;
$result = $a + $b * $final + $c * $final * $final;
return max(round($result), 0);
}
## --------------------------------------------------------
private function prepOption($option)
# Author: Jarrod Oberto
# Purpose: Prep option like change the passed in option to lowercase
# Param in: (str/int) $option: eg. 'exact', 'crop'. 0, 4
# Param out: lowercase string
# Reference:
# Notes:
#
{
if (is_array($option))
{
if (fix_strtolower($option[0]) == 'crop' && count($option) == 2)
{
return 'crop';
}
else
{
throw new Exception('Crop resize option array is badly formatted.');
}
}
else
{
if (strpos($option, 'crop') !== false)
{
return 'crop';
}
}
if (is_string($option))
{
return fix_strtolower($option);
}
return $option;
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Presets
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
#
# Preset are pre-defined templates you can apply to your image.
#
# These are inteded to be applied to thumbnail images.
#
public function borderPreset($preset)
{
switch ($preset)
{
case 'simple':
$this->addBorder(7, '#fff');
$this->addBorder(6, '#f2f1f0');
$this->addBorder(2, '#fff');
$this->addBorder(1, '#ccc');
break;
default:
break;
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Draw border
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function addBorder($thickness = 1, $rgbArray = array( 255, 255, 255 ))
# Author: Jarrod Oberto
# Date: 05-05-11
# Purpose: Add a border to the image
# Param in:
# Param out:
# Reference:
# Notes: This border is added to the INSIDE of the image
#
{
if ($this->imageResized)
{
$rgbArray = $this->formatColor($rgbArray);
$r = $rgbArray['r'];
$g = $rgbArray['g'];
$b = $rgbArray['b'];
$x1 = 0;
$y1 = 0;
$x2 = ImageSX($this->imageResized) - 1;
$y2 = ImageSY($this->imageResized) - 1;
$rgbArray = ImageColorAllocate($this->imageResized, $r, $g, $b);
for ($i = 0; $i < $thickness; $i++)
{
ImageRectangle($this->imageResized, $x1++, $y1++, $x2--, $y2--, $rgbArray);
}
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Gray Scale
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function greyScale()
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Make image greyscale
# Param in: n/a
# Param out:
# Reference:
# Notes:
#
{
if ($this->imageResized)
{
imagefilter($this->imageResized, IMG_FILTER_GRAYSCALE);
}
}
## --------------------------------------------------------
public function greyScaleEnhanced()
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Make image greyscale
# Param in: n/a
# Param out:
# Reference:
# Notes:
#
{
if ($this->imageResized)
{
imagefilter($this->imageResized, IMG_FILTER_GRAYSCALE);
imagefilter($this->imageResized, IMG_FILTER_CONTRAST, -15);
imagefilter($this->imageResized, IMG_FILTER_BRIGHTNESS, 2);
$this->sharpen($this->width);
}
}
## --------------------------------------------------------
public function greyScaleDramatic()
# Alias of gd_filter_monopin
{
$this->gd_filter_monopin();
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Black 'n White
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function blackAndWhite()
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Make image black and white
# Param in: n/a
# Param out:
# Reference:
# Notes:
#
{
if ($this->imageResized)
{
imagefilter($this->imageResized, IMG_FILTER_GRAYSCALE);
imagefilter($this->imageResized, IMG_FILTER_CONTRAST, -1000);
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Negative
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function negative()
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Make image negative
# Param in: n/a
# Param out:
# Reference:
# Notes:
#
{
if ($this->imageResized)
{
imagefilter($this->imageResized, IMG_FILTER_NEGATE);
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Sepia
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function sepia()
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Make image sepia
# Param in: n/a
# Param out:
# Reference:
# Notes:
#
{
if ($this->imageResized)
{
imagefilter($this->imageResized, IMG_FILTER_GRAYSCALE);
imagefilter($this->imageResized, IMG_FILTER_BRIGHTNESS, -10);
imagefilter($this->imageResized, IMG_FILTER_CONTRAST, -20);
imagefilter($this->imageResized, IMG_FILTER_COLORIZE, 60, 30, -15);
}
}
## --------------------------------------------------------
public function sepia2()
{
if ($this->imageResized)
{
$total = imagecolorstotal($this->imageResized);
for ($i = 0; $i < $total; $i++)
{
$index = imagecolorsforindex($this->imageResized, $i);
$red = ($index["red"] * 0.393 + $index["green"] * 0.769 + $index["blue"] * 0.189) / 1.351;
$green = ($index["red"] * 0.349 + $index["green"] * 0.686 + $index["blue"] * 0.168) / 1.203;
$blue = ($index["red"] * 0.272 + $index["green"] * 0.534 + $index["blue"] * 0.131) / 2.140;
imagecolorset($this->imageResized, $i, $red, $green, $blue);
}
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Vintage
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function vintage()
# Alias of gd_filter_monopin
{
$this->gd_filter_vintage();
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Presets By Marc Hibbins
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
/** Apply 'Monopin' preset */
public function gd_filter_monopin()
{
if ($this->imageResized)
{
imagefilter($this->imageResized, IMG_FILTER_GRAYSCALE);
imagefilter($this->imageResized, IMG_FILTER_BRIGHTNESS, -15);
imagefilter($this->imageResized, IMG_FILTER_CONTRAST, -15);
$this->imageResized = $this->gd_apply_overlay($this->imageResized, 'vignette', 100);
}
}
## --------------------------------------------------------
public function gd_filter_vintage()
{
if ($this->imageResized)
{
$this->imageResized = $this->gd_apply_overlay($this->imageResized, 'vignette', 45);
imagefilter($this->imageResized, IMG_FILTER_BRIGHTNESS, 20);
imagefilter($this->imageResized, IMG_FILTER_CONTRAST, -35);
imagefilter($this->imageResized, IMG_FILTER_COLORIZE, 60, -10, 35);
imagefilter($this->imageResized, IMG_FILTER_SMOOTH, 7);
$this->imageResized = $this->gd_apply_overlay($this->imageResized, 'scratch', 10);
}
}
## --------------------------------------------------------
/** Apply a PNG overlay */
private function gd_apply_overlay($im, $type, $amount)
#
# Original Author: Marc Hibbins
# License: Attribution-ShareAlike 3.0
# Purpose:
# Params in:
# Params out:
# Notes:
#
{
$width = imagesx($im);
$height = imagesy($im);
$filter = imagecreatetruecolor($width, $height);
imagealphablending($filter, false);
imagesavealpha($filter, true);
$transparent = imagecolorallocatealpha($filter, 255, 255, 255, 127);
imagefilledrectangle($filter, 0, 0, $width, $height, $transparent);
// *** Resize overlay
$overlay = $this->filterOverlayPath . '/' . $type . '.png';
$png = imagecreatefrompng($overlay);
imagecopyresampled($filter, $png, 0, 0, 0, 0, $width, $height, imagesx($png), imagesy($png));
$comp = imagecreatetruecolor($width, $height);
imagecopy($comp, $im, 0, 0, 0, 0, $width, $height);
imagecopy($comp, $filter, 0, 0, 0, 0, $width, $height);
imagecopymerge($im, $comp, 0, 0, 0, 0, $width, $height, $amount);
imagedestroy($comp);
return $im;
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Colorise
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function image_colorize($rgb)
{
imageTrueColorToPalette($this->imageResized, true, 256);
$numColors = imageColorsTotal($this->imageResized);
for ($x = 0; $x < $numColors; $x++)
{
list($r, $g, $b) = array_values(imageColorsForIndex($this->imageResized, $x));
// calculate grayscale in percent
$grayscale = ($r + $g + $b) / 3 / 0xff;
imageColorSet($this->imageResized, $x,
$grayscale * $rgb[0],
$grayscale * $rgb[1],
$grayscale * $rgb[2]
);
}
return true;
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Reflection
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function addReflection($reflectionHeight = 50, $startingTransparency = 30, $inside = false, $bgColor = '#fff', $stretch = false, $divider = 0)
{
// *** Convert color
$rgbArray = $this->formatColor($bgColor);
$r = $rgbArray['r'];
$g = $rgbArray['g'];
$b = $rgbArray['b'];
$im = $this->imageResized;
$li = imagecreatetruecolor($this->width, 1);
$bgc = imagecolorallocate($li, $r, $g, $b);
imagefilledrectangle($li, 0, 0, $this->width, 1, $bgc);
$bg = imagecreatetruecolor($this->width, $reflectionHeight);
$wh = imagecolorallocate($im, 255, 255, 255);
$im = imagerotate($im, -180, $wh);
imagecopyresampled($bg, $im, 0, 0, 0, 0, $this->width, $this->height, $this->width, $this->height);
$im = $bg;
$bg = imagecreatetruecolor($this->width, $reflectionHeight);
for ($x = 0; $x < $this->width; $x++)
{
imagecopy($bg, $im, $x, 0, $this->width - $x - 1, 0, 1, $reflectionHeight);
}
$im = $bg;
$transaprencyAmount = $this->invertTransparency($startingTransparency, 100);
// *** Fade
if ($stretch)
{
$step = 100 / ($reflectionHeight + $startingTransparency);
}
else
{
$step = 100 / $reflectionHeight;
}
for ($i = 0; $i <= $reflectionHeight; $i++)
{
if ($startingTransparency > 100)
{
$startingTransparency = 100;
}
if ($startingTransparency < 1)
{
$startingTransparency = 1;
}
imagecopymerge($bg, $li, 0, $i, 0, 0, $this->width, 1, $startingTransparency);
$startingTransparency += $step;
}
// *** Apply fade
imagecopymerge($im, $li, 0, 0, 0, 0, $this->width, $divider, 100); // Divider
// *** width, height of reflection.
$x = imagesx($im);
$y = imagesy($im);
// *** Determines if the reflection should be displayed inside or outside the image
if ($inside)
{
// Create new blank image with sizes.
$final = imagecreatetruecolor($this->width, $this->height);
imagecopymerge($final, $this->imageResized, 0, 0, 0, $reflectionHeight, $this->width, $this->height - $reflectionHeight, 100);
imagecopymerge($final, $im, 0, $this->height - $reflectionHeight, 0, 0, $x, $y, 100);
}
else
{
// Create new blank image with sizes.
$final = imagecreatetruecolor($this->width, $this->height + $y);
imagecopymerge($final, $this->imageResized, 0, 0, 0, 0, $this->width, $this->height, 100);
imagecopymerge($final, $im, 0, $this->height, 0, 0, $x, $y, 100);
}
$this->imageResized = $final;
imagedestroy($li);
imagedestroy($im);
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Rotate
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function rotate($value = 90, $bgColor = 'transparent')
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Rotate image
# Param in: (mixed) $degrees: (int) number of degress to rotate image
# (str) param "left": rotate left
# (str) param "right": rotate right
# (str) param "upside": upside-down image
# Param out:
# Reference:
# Notes: The default direction of imageRotate() is counter clockwise.
#
{
if ($this->imageResized)
{
if (is_integer($value))
{
$degrees = $value;
}
// *** Convert color
$rgbArray = $this->formatColor($bgColor);
$r = $rgbArray['r'];
$g = $rgbArray['g'];
$b = $rgbArray['b'];
if (isset($rgbArray['a']))
{
$a = $rgbArray['a'];
}
if (is_string($value))
{
$value = fix_strtolower($value);
switch ($value)
{
case 'left':
$degrees = 90;
break;
case 'right':
$degrees = 270;
break;
case 'upside':
$degrees = 180;
break;
default:
break;
}
}
// *** The default direction of imageRotate() is counter clockwise
// * This makes it clockwise
$degrees = 360 - $degrees;
// *** Create background color
$bg = ImageColorAllocateAlpha($this->imageResized, $r, $g, $b, $a);
// *** Fill with background
ImageFill($this->imageResized, 0, 0, $bg);
// *** Rotate
$this->imageResized = imagerotate($this->imageResized, $degrees, $bg); // Rotate 45 degrees and allocated the transparent colour as the one to make transparent (obviously)
// Ensure alpha transparency
ImageSaveAlpha($this->imageResized, true);
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Round corners
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function roundCorners($radius = 5, $bgColor = 'transparent')
# Author: Jarrod Oberto
# Date: 19-05-2011
# Purpose: Create rounded corners on your image
# Param in: (int) radius = the amount of curvature
# (mixed) $bgColor = the corner background color
# Param out: n/a
# Reference:
# Notes:
#
{
// *** Check if the user wants transparency
$isTransparent = false;
if ( ! is_array($bgColor))
{
if (fix_strtolower($bgColor) == 'transparent')
{
$isTransparent = true;
}
}
// *** If we use transparency, we need to color our curved mask with a unique color
if ($isTransparent)
{
$bgColor = $this->findUnusedGreen();
}
// *** Convert color
$rgbArray = $this->formatColor($bgColor);
$r = $rgbArray['r'];
$g = $rgbArray['g'];
$b = $rgbArray['b'];
if (isset($rgbArray['a']))
{
$a = $rgbArray['a'];
}
// *** Create top-left corner mask (square)
$cornerImg = imagecreatetruecolor($radius, $radius);
//$cornerImg = imagecreate($radius, $radius);
//imagealphablending($cornerImg, true);
//imagesavealpha($cornerImg, true);
//imagealphablending($this->imageResized, false);
//imagesavealpha($this->imageResized, true);
// *** Give it a color
$maskColor = imagecolorallocate($cornerImg, 0, 0, 0);
// *** Replace the mask color (black) to transparent
imagecolortransparent($cornerImg, $maskColor);
// *** Create the image background color
$imagebgColor = imagecolorallocate($cornerImg, $r, $g, $b);
// *** Fill the corner area to the user defined color
imagefill($cornerImg, 0, 0, $imagebgColor);
imagefilledellipse($cornerImg, $radius, $radius, $radius * 2, $radius * 2, $maskColor);
// *** Map to top left corner
imagecopymerge($this->imageResized, $cornerImg, 0, 0, 0, 0, $radius, $radius, 100); #tl
// *** Map rounded corner to other corners by rotating and applying the mask
$cornerImg = imagerotate($cornerImg, 90, 0);
imagecopymerge($this->imageResized, $cornerImg, 0, $this->height - $radius, 0, 0, $radius, $radius, 100); #bl
$cornerImg = imagerotate($cornerImg, 90, 0);
imagecopymerge($this->imageResized, $cornerImg, $this->width - $radius, $this->height - $radius, 0, 0, $radius, $radius, 100); #br
$cornerImg = imagerotate($cornerImg, 90, 0);
imagecopymerge($this->imageResized, $cornerImg, $this->width - $radius, 0, 0, 0, $radius, $radius, 100); #tr
// *** If corners are to be transparent, we fill our chromakey color as transparent.
if ($isTransparent)
{
//imagecolortransparent($this->imageResized, $imagebgColor);
$this->imageResized = $this->transparentImage($this->imageResized);
imagesavealpha($this->imageResized, true);
}
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Shadow
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function addShadow($shadowAngle = 45, $blur = 15, $bgColor = 'transparent')
#
# Author: Jarrod Oberto (Adapted from Pascal Naidon)
# Ref: http://www.les-stooges.org/pascal/webdesign/vignettes/index.php?la=en
# Purpose: Add a drop shadow to your image
# Params in: (int) $angle: the angle of the shadow
# (int) $blur: the blur distance
# (mixed) $bgColor: the color of the background
# Params out:
# Notes:
#
{
// *** A higher number results in a smoother shadow
define('STEPS', $blur * 2);
// *** Set the shadow distance
$shadowDistance = $blur * 0.25;
// *** Set blur width and height
$blurWidth = $blurHeight = $blur;
if ($shadowAngle == 0)
{
$distWidth = 0;
$distHeight = 0;
}
else
{
$distWidth = $shadowDistance * cos(deg2rad($shadowAngle));
$distHeight = $shadowDistance * sin(deg2rad($shadowAngle));
}
// *** Convert color
if (fix_strtolower($bgColor) != 'transparent')
{
$rgbArray = $this->formatColor($bgColor);
$r0 = $rgbArray['r'];
$g0 = $rgbArray['g'];
$b0 = $rgbArray['b'];
}
$image = $this->imageResized;
$width = $this->width;
$height = $this->height;
$newImage = imagecreatetruecolor($width, $height);
imagecopyresampled($newImage, $image, 0, 0, 0, 0, $width, $height, $width, $height);
// *** RGB
$rgb = imagecreatetruecolor($width + $blurWidth, $height + $blurHeight);
$colour = imagecolorallocate($rgb, 0, 0, 0);
imagefilledrectangle($rgb, 0, 0, $width + $blurWidth, $height + $blurHeight, $colour);
$colour = imagecolorallocate($rgb, 255, 255, 255);
//imagefilledrectangle($rgb, $blurWidth*0.5-$distWidth, $blurHeight*0.5-$distHeight, $width+$blurWidth*0.5-$distWidth, $height+$blurWidth*0.5-$distHeight, $colour);
imagefilledrectangle($rgb, $blurWidth * 0.5 - $distWidth, $blurHeight * 0.5 - $distHeight, $width + $blurWidth * 0.5 - $distWidth, $height + $blurWidth * 0.5 - $distHeight, $colour);
//imagecopymerge($rgb, $newImage, 1+$blurWidth*0.5-$distWidth, 1+$blurHeight*0.5-$distHeight, 0,0, $width, $height, 100);
imagecopymerge($rgb, $newImage, $blurWidth * 0.5 - $distWidth, $blurHeight * 0.5 - $distHeight, 0, 0, $width + $blurWidth, $height + $blurHeight, 100);
// *** Shadow (alpha)
$shadow = imagecreatetruecolor($width + $blurWidth, $height + $blurHeight);
imagealphablending($shadow, false);
$colour = imagecolorallocate($shadow, 0, 0, 0);
imagefilledrectangle($shadow, 0, 0, $width + $blurWidth, $height + $blurHeight, $colour);
for ($i = 0; $i <= STEPS; $i++)
{
$t = ((1.0 * $i) / STEPS);
$intensity = 255 * $t * $t;
$colour = imagecolorallocate($shadow, $intensity, $intensity, $intensity);
$points = array(
$blurWidth * $t, $blurHeight, // Point 1 (x, y)
$blurWidth, $blurHeight * $t, // Point 2 (x, y)
$width, $blurHeight * $t, // Point 3 (x, y)
$width + $blurWidth * (1 - $t), $blurHeight, // Point 4 (x, y)
$width + $blurWidth * (1 - $t), $height, // Point 5 (x, y)
$width, $height + $blurHeight * (1 - $t), // Point 6 (x, y)
$blurWidth, $height + $blurHeight * (1 - $t), // Point 7 (x, y)
$blurWidth * $t, $height // Point 8 (x, y)
);
imagepolygon($shadow, $points, 8, $colour);
}
for ($i = 0; $i <= STEPS; $i++)
{
$t = ((1.0 * $i) / STEPS);
$intensity = 255 * $t * $t;
$colour = imagecolorallocate($shadow, $intensity, $intensity, $intensity);
imagefilledarc($shadow, $blurWidth - 1, $blurHeight - 1, 2 * (1 - $t) * $blurWidth, 2 * (1 - $t) * $blurHeight, 180, 268, $colour, IMG_ARC_PIE);
imagefilledarc($shadow, $width, $blurHeight - 1, 2 * (1 - $t) * $blurWidth, 2 * (1 - $t) * $blurHeight, 270, 358, $colour, IMG_ARC_PIE);
imagefilledarc($shadow, $width, $height, 2 * (1 - $t) * $blurWidth, 2 * (1 - $t) * $blurHeight, 0, 90, $colour, IMG_ARC_PIE);
imagefilledarc($shadow, $blurWidth - 1, $height, 2 * (1 - $t) * $blurWidth, 2 * (1 - $t) * $blurHeight, 90, 180, $colour, IMG_ARC_PIE);
}
$colour = imagecolorallocate($shadow, 255, 255, 255);
imagefilledrectangle($shadow, $blurWidth, $blurHeight, $width, $height, $colour);
imagefilledrectangle($shadow, $blurWidth * 0.5 - $distWidth, $blurHeight * 0.5 - $distHeight, $width + $blurWidth * 0.5 - 1 - $distWidth, $height + $blurHeight * 0.5 - 1 - $distHeight, $colour);
// *** The magic
imagealphablending($rgb, false);
for ($theX = 0; $theX < imagesx($rgb); $theX++)
{
for ($theY = 0; $theY < imagesy($rgb); $theY++)
{
// *** Get the RGB values for every pixel of the RGB image
$colArray = imagecolorat($rgb, $theX, $theY);
$r = ($colArray >> 16) & 0xFF;
$g = ($colArray >> 8) & 0xFF;
$b = $colArray & 0xFF;
// *** Get the alpha value for every pixel of the shadow image
$colArray = imagecolorat($shadow, $theX, $theY);
$a = $colArray & 0xFF;
$a = 127 - floor($a / 2);
$t = $a / 128.0;
// *** Create color
if (fix_strtolower($bgColor) == 'transparent')
{
$myColour = imagecolorallocatealpha($rgb, $r, $g, $b, $a);
}
else
{
$myColour = imagecolorallocate($rgb, $r * (1.0 - $t) + $r0 * $t, $g * (1.0 - $t) + $g0 * $t, $b * (1.0 - $t) + $b0 * $t);
}
// *** Add color to new rgb image
imagesetpixel($rgb, $theX, $theY, $myColour);
}
}
imagealphablending($rgb, true);
imagesavealpha($rgb, true);
$this->imageResized = $rgb;
imagedestroy($image);
imagedestroy($newImage);
imagedestroy($shadow);
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Add Caption Box
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function addCaptionBox($side = 'b', $thickness = 50, $padding = 0, $bgColor = '#000', $transaprencyAmount = 30)
#
# Author: Jarrod Oberto
# Date: 26 May 2011
# Purpose: Add a caption box
# Params in: (str) $side: the side to add the caption box (t, r, b, or l).
# (int) $thickness: how thick you want the caption box to be.
# (mixed) $bgColor: The color of the caption box.
# (int) $transaprencyAmount: The amount of transparency to be
# applied.
# Params out: n/a
# Notes:
#
{
$side = fix_strtolower($side);
// *** Convert color
$rgbArray = $this->formatColor($bgColor);
$r = $rgbArray['r'];
$g = $rgbArray['g'];
$b = $rgbArray['b'];
$positionArray = $this->calculateCaptionBoxPosition($side, $thickness, $padding);
// *** Store incase we want to use method addTextToCaptionBox()
$this->captionBoxPositionArray = $positionArray;
$transaprencyAmount = $this->invertTransparency($transaprencyAmount, 127, false);
$transparent = imagecolorallocatealpha($this->imageResized, $r, $g, $b, $transaprencyAmount);
imagefilledrectangle($this->imageResized, $positionArray['x1'], $positionArray['y1'], $positionArray['x2'], $positionArray['y2'], $transparent);
}
## --------------------------------------------------------
public function addTextToCaptionBox($text, $fontColor = '#fff', $fontSize = 12, $angle = 0, $font = null)
#
# Author: Jarrod Oberto
# Date: 03 Aug 11
# Purpose: Simplify adding text to a caption box by automatically
# locating the center of the caption box
# Params in: The usually text paams (less a couple)
# Params out: n/a
# Notes:
#
{
// *** Get the caption box measurements
if (count($this->captionBoxPositionArray) == 4)
{
$x1 = $this->captionBoxPositionArray['x1'];
$x2 = $this->captionBoxPositionArray['x2'];
$y1 = $this->captionBoxPositionArray['y1'];
$y2 = $this->captionBoxPositionArray['y2'];
}
else
{
if ($this->debug)
{
throw new Exception('No caption box found.');
}
else
{
return false;
}
}
// *** Get text font
$font = $this->getTextFont($font);
// *** Get text size
$textSizeArray = $this->getTextSize($fontSize, $angle, $font, $text);
$textWidth = $textSizeArray['width'];
$textHeight = $textSizeArray['height'];
// *** Find the width/height middle points
$boxXMiddle = (($x2 - $x1) / 2);
$boxYMiddle = (($y2 - $y1) / 2);
// *** Box middle - half the text width/height
$xPos = ($x1 + $boxXMiddle) - ($textWidth / 2);
$yPos = ($y1 + $boxYMiddle) - ($textHeight / 2);
$pos = $xPos . 'x' . $yPos;
$this->addText($text, $pos, $padding = 0, $fontColor, $fontSize, $angle, $font);
}
## --------------------------------------------------------
private function calculateCaptionBoxPosition($side, $thickness, $padding)
{
$positionArray = array();
switch ($side)
{
case 't':
$positionArray['x1'] = 0;
$positionArray['y1'] = $padding;
$positionArray['x2'] = $this->width;
$positionArray['y2'] = $thickness + $padding;
break;
case 'r':
$positionArray['x1'] = $this->width - $thickness - $padding;
$positionArray['y1'] = 0;
$positionArray['x2'] = $this->width - $padding;
$positionArray['y2'] = $this->height;
break;
case 'b':
$positionArray['x1'] = 0;
$positionArray['y1'] = $this->height - $thickness - $padding;
$positionArray['x2'] = $this->width;
$positionArray['y2'] = $this->height - $padding;
break;
case 'l':
$positionArray['x1'] = $padding;
$positionArray['y1'] = 0;
$positionArray['x2'] = $thickness + $padding;
$positionArray['y2'] = $this->height;
break;
default:
break;
}
return $positionArray;
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Get EXIF Data
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function getExif($debug = false)
# Author: Jarrod Oberto
# Date: 07-05-2011
# Purpose: Get image EXIF data
# Param in: n/a
# Param out: An associate array of EXIF data
# Reference:
# Notes:
# 23 May 13 : added orientation flag -jco
#
{
if ( ! $this->debug || ! $debug)
{
$debug = false;
}
// *** Check all is good - check the EXIF library exists and the file exists, too.
if ( ! $this->testEXIFInstalled())
{
if ($debug)
{
throw new Exception('The EXIF Library is not installed.');
}
else
{
return array();
}
};
if ( ! file_exists($this->fileName))
{
if ($debug)
{
throw new Exception('Image not found.');
}
else
{
return array();
}
};
if ($this->fileExtension != '.jpg')
{
if ($debug)
{
throw new Exception('Metadata not supported for this image type.');
}
else
{
return array();
}
};
$exifData = exif_read_data($this->fileName, 'IFD0');
// *** Format the apperture value
$ev = $exifData['ApertureValue'];
$apPeicesArray = explode('/', $ev);
if (count($apPeicesArray) == 2)
{
$apertureValue = round($apPeicesArray[0] / $apPeicesArray[1], 2, PHP_ROUND_HALF_DOWN) . ' EV';
}
else
{
$apertureValue = '';
}
// *** Format the focal length
$focalLength = $exifData['FocalLength'];
$flPeicesArray = explode('/', $focalLength);
if (count($flPeicesArray) == 2)
{
$focalLength = $flPeicesArray[0] / $flPeicesArray[1] . '.0 mm';
}
else
{
$focalLength = '';
}
// *** Format fNumber
$fNumber = $exifData['FNumber'];
$fnPeicesArray = explode('/', $fNumber);
if (count($fnPeicesArray) == 2)
{
$fNumber = $fnPeicesArray[0] / $fnPeicesArray[1];
}
else
{
$fNumber = '';
}
// *** Resolve ExposureProgram
if (isset($exifData['ExposureProgram']))
{
$ep = $exifData['ExposureProgram'];
}
if (isset($ep))
{
$ep = $this->resolveExposureProgram($ep);
}
// *** Resolve MeteringMode
$mm = $exifData['MeteringMode'];
$mm = $this->resolveMeteringMode($mm);
// *** Resolve Flash
$flash = $exifData['Flash'];
$flash = $this->resolveFlash($flash);
if (isset($exifData['Make']))
{
$exifDataArray['make'] = $exifData['Make'];
}
else
{
$exifDataArray['make'] = '';
}
if (isset($exifData['Model']))
{
$exifDataArray['model'] = $exifData['Model'];
}
else
{
$exifDataArray['model'] = '';
}
if (isset($exifData['DateTime']))
{
$exifDataArray['date'] = $exifData['DateTime'];
}
else
{
$exifDataArray['date'] = '';
}
if (isset($exifData['ExposureTime']))
{
$exifDataArray['exposure time'] = $exifData['ExposureTime'] . ' sec.';
}
else
{
$exifDataArray['exposure time'] = '';
}
if ($apertureValue != '')
{
$exifDataArray['aperture value'] = $apertureValue;
}
else
{
$exifDataArray['aperture value'] = '';
}
if (isset($exifData['COMPUTED']['ApertureFNumber']))
{
$exifDataArray['f-stop'] = $exifData['COMPUTED']['ApertureFNumber'];
}
else
{
$exifDataArray['f-stop'] = '';
}
if (isset($exifData['FNumber']))
{
$exifDataArray['fnumber'] = $exifData['FNumber'];
}
else
{
$exifDataArray['fnumber'] = '';
}
if ($fNumber != '')
{
$exifDataArray['fnumber value'] = $fNumber;
}
else
{
$exifDataArray['fnumber value'] = '';
}
if (isset($exifData['ISOSpeedRatings']))
{
$exifDataArray['iso'] = $exifData['ISOSpeedRatings'];
}
else
{
$exifDataArray['iso'] = '';
}
if ($focalLength != '')
{
$exifDataArray['focal length'] = $focalLength;
}
else
{
$exifDataArray['focal length'] = '';
}
if (isset($ep))
{
$exifDataArray['exposure program'] = $ep;
}
else
{
$exifDataArray['exposure program'] = '';
}
if ($mm != '')
{
$exifDataArray['metering mode'] = $mm;
}
else
{
$exifDataArray['metering mode'] = '';
}
if ($flash != '')
{
$exifDataArray['flash status'] = $flash;
}
else
{
$exifDataArray['flash status'] = '';
}
if (isset($exifData['Artist']))
{
$exifDataArray['creator'] = $exifData['Artist'];
}
else
{
$exifDataArray['creator'] = '';
}
if (isset($exifData['Copyright']))
{
$exifDataArray['copyright'] = $exifData['Copyright'];
}
else
{
$exifDataArray['copyright'] = '';
}
// *** Orientation
if (isset($exifData['Orientation']))
{
$exifDataArray['orientation'] = $exifData['Orientation'];
}
else
{
$exifDataArray['orientation'] = '';
}
return $exifDataArray;
}
## --------------------------------------------------------
private function resolveExposureProgram($ep)
{
switch ($ep)
{
case 0:
$ep = '';
break;
case 1:
$ep = 'manual';
break;
case 2:
$ep = 'normal program';
break;
case 3:
$ep = 'aperture priority';
break;
case 4:
$ep = 'shutter priority';
break;
case 5:
$ep = 'creative program';
break;
case 6:
$ep = 'action program';
break;
case 7:
$ep = 'portrait mode';
break;
case 8:
$ep = 'landscape mode';
break;
default:
break;
}
return $ep;
}
## --------------------------------------------------------
private function resolveMeteringMode($mm)
{
switch ($mm)
{
case 0:
$mm = 'unknown';
break;
case 1:
$mm = 'average';
break;
case 2:
$mm = 'center weighted average';
break;
case 3:
$mm = 'spot';
break;
case 4:
$mm = 'multi spot';
break;
case 5:
$mm = 'pattern';
break;
case 6:
$mm = 'partial';
break;
case 255:
$mm = 'other';
break;
default:
break;
}
return $mm;
}
## --------------------------------------------------------
private function resolveFlash($flash)
{
switch ($flash)
{
case 0:
$flash = 'flash did not fire';
break;
case 1:
$flash = 'flash fired';
break;
case 5:
$flash = 'strobe return light not detected';
break;
case 7:
$flash = 'strobe return light detected';
break;
case 9:
$flash = 'flash fired, compulsory flash mode';
break;
case 13:
$flash = 'flash fired, compulsory flash mode, return light not detected';
break;
case 15:
$flash = 'flash fired, compulsory flash mode, return light detected';
break;
case 16:
$flash = 'flash did not fire, compulsory flash mode';
break;
case 24:
$flash = 'flash did not fire, auto mode';
break;
case 25:
$flash = 'flash fired, auto mode';
break;
case 29:
$flash = 'flash fired, auto mode, return light not detected';
break;
case 31:
$flash = 'flash fired, auto mode, return light detected';
break;
case 32:
$flash = 'no flash function';
break;
case 65:
$flash = 'flash fired, red-eye reduction mode';
break;
case 69:
$flash = 'flash fired, red-eye reduction mode, return light not detected';
break;
case 71:
$flash = 'flash fired, red-eye reduction mode, return light detected';
break;
case 73:
$flash = 'flash fired, compulsory flash mode, red-eye reduction mode';
break;
case 77:
$flash = 'flash fired, compulsory flash mode, red-eye reduction mode, return light not detected';
break;
case 79:
$flash = 'flash fired, compulsory flash mode, red-eye reduction mode, return light detected';
break;
case 89:
$flash = 'flash fired, auto mode, red-eye reduction mode';
break;
case 93:
$flash = 'flash fired, auto mode, return light not detected, red-eye reduction mode';
break;
case 95:
$flash = 'flash fired, auto mode, return light detected, red-eye reduction mode';
break;
default:
break;
}
return $flash;
}
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Get IPTC Data
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
Write IPTC Data
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
public function writeIPTCcaption($value)
# Caption
{
$this->writeIPTC(120, $value);
}
## --------------------------------------------------------
public function writeIPTCwriter($value)
{
//$this->writeIPTC(65, $value);
}
## --------------------------------------------------------
private function writeIPTC($dat, $value)
{
# LIMIT TO JPG
$caption_block = $this->iptc_maketag(2, $dat, $value);
$image_string = iptcembed($caption_block, $this->fileName);
file_put_contents('iptc.jpg', $image_string);
}
## --------------------------------------------------------
private function iptc_maketag($rec, $dat, $val)
# Author: Thies C. Arntzen
# Purpose: Function to format the new IPTC text
# Param in: $rec: Application record. (We’re working with #2)
# $dat: Index. (120 for caption, 118 for contact. See the IPTC IIM
# specification:
# http://www.iptc.org/std/IIM/4.1/specification/IIMV4.1.pdf
# $val: Value/data/text. Make sure this is within the length
# constraints of the IPTC IIM specification
# Ref: http://blog.peterhaza.no/working-with-image-meta-data-in-exif-and-iptc-headers-from-php/
# http://php.net/manual/en/function.iptcembed.php
#
{
$len = strlen($val);
if ($len < 0x8000)
{
return chr(0x1c) . chr($rec) . chr($dat) .
chr($len >> 8) .
chr($len & 0xff) .
$val;
}
else
{
return chr(0x1c) . chr($rec) . chr($dat) .