/filemanager/include/php_image_magician.php
PHP | 3320 lines | 1624 code | 614 blank | 1082 comment | 289 complexity | 873b98d1cd68064b004ce98c73b40ab4 MD5 | raw file
Possible License(s): LGPL-2.1, LGPL-3.0
- <?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($dat).
- chr(0x80).chr(0x04).
- chr(($len >> 24) & 0xff).
- chr(($len >> 16) & 0xff).
- chr(($len >> 8 ) & 0xff).
- chr(($len ) & 0xff).
- $val;
- }
- /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
- Write XMP Data
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
- //http://xmpphptoolkit.sourceforge.net/
- /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
- Add Text
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
- public function addText($text, $pos = '20x20', $padding = 0, $fontColor='#fff', $fontSize = 12, $angle = 0, $font = null)
- # Author: Jarrod Oberto
- # Date: 18-11-09
- # Purpose: Add text to an image
- # Param in:
- # Param out:
- # Reference: http://php.net/manual/en/function.imagettftext.php
- # Notes: Make sure you supply the font.
- #
- {
- // *** Convert color
- $rgbArray = $this->formatColor($fontColor);
- $r = $rgbArray['r'];
- $g = $rgbArray['g'];
- $b = $rgbArray['b'];
- // *** Get text font
- $font = $this->getTextFont($font);
- // *** Get text size
- $textSizeArray = $this->getTextSize($fontSize, $angle, $font, $text);
- $textWidth = $textSizeArray['width'];
- $textHeight = $textSizeArray['height'];
- // *** Find co-ords to place text
- $posArray = $this->calculatePosition($pos, $padding, $textWidth, $textHeight, false);
- $x = $posArray['width'];
- $y = $posArray['height'];
- $fontColor = imagecolorallocate($this->imageResized, $r, $g, $b);
- // *** Add text
- imagettftext($this->imageResized, $fontSize, $angle, $x, $y, $fontColor, $font, $text);
- }
- ## --------------------------------------------------------
- private function getTextFont($font)
- {
- // *** Font path (shou
- $fontPath = dirname(__FILE__) . '/' . $this->fontDir;
- // *** The below is/may be needed depending on your version (see ref)
- putenv('GDFONTPATH=' . realpath('.'));
- // *** Check if the passed in font exsits...
- if ($font == null || !file_exists($font)) {
- // *** ...If not, default to this font.
- $font = $fontPath . '/arimo.ttf';
- // *** Check our default font exists...
- if (!file_exists($font)) {
- // *** If not, return false
- if ($this->debug) { throw new Exception('Font not found'); }else{ return false; }
- }
- }
- return $font;
- }
- ## --------------------------------------------------------
- private function getTextSize($fontSize, $angle, $font, $text)
- {
- // *** Define box (so we can get the width)
- $box = @imageTTFBbox($fontSize, $angle, $font, $text);
- // *** Get width of text from dimensions
- $textWidth = abs($box[4] - $box[0]);
- // *** Get height of text from dimensions (should also be same as $fontSize)
- $textHeight = abs($box[5] - $box[1]);
- return array('height' => $textHeight, 'width' => $textWidth);
- }
- /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
- Add Watermark
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
- public function addWatermark($watermarkImage, $pos, $padding = 0, $opacity = 0)
- # Author: Jarrod Oberto
- # Date: 18-11-09
- # Purpose: Add watermark image
- # Param in: (str) $watermark: The watermark image
- # (str) $pos: Could be a pre-determined position such as:
- # tl = top left,
- # t = top (middle),
- # tr = top right,
- # l = left,
- # m = middle,
- # r = right,
- # bl = bottom left,
- # b = bottom (middle),
- # br = bottom right
- # Or, it could be a co-ordinate position such as: 50x100
- #
- # (int) $padding: If using a pre-determined position you can
- # adjust the padding from the edges by passing an amount
- # in pixels. If using co-ordinates, this value is ignored.
- # Param out:
- # Reference: http://www.php.net/manual/en/image.examples-watermark.php
- # Notes: Based on example in reference.
- #
- #
- {
- // Load the stamp and the photo to apply the watermark to
- $stamp = $this->openImage ($watermarkImage); # stamp
- $im = $this->imageResized; # photo
- // *** Get stamps width and height
- $sx = imagesx($stamp);
- $sy = imagesy($stamp);
- // *** Find co-ords to place image
- $posArray = $this->calculatePosition($pos, $padding, $sx, $sy);
- $x = $posArray['width'];
- $y = $posArray['height'];
- // *** Set watermark opacity
- if (fix_strtolower(strrchr($watermarkImage, '.')) == '.png') {
- $opacity = $this->invertTransparency($opacity, 100);
- $this->filterOpacity($stamp, $opacity);
- }
- // Copy the watermark image onto our photo
- imagecopy($im, $stamp, $x, $y, 0, 0, imagesx($stamp), imagesy($stamp));
- }
- ## --------------------------------------------------------
- private function calculatePosition($pos, $padding, $assetWidth, $assetHeight, $upperLeft = true)
- #
- # Author: Jarrod Oberto
- # Date: 08-05-11
- # Purpose: Calculate the x, y pixel cordinates of the asset to place
- # Params in: (str) $pos: Either something like: "tl", "l", "br" or an
- # exact position like: "100x50"
- # (int) $padding: The amount of padding from the edge. Only
- # used for the predefined $pos.
- # (int) $assetWidth: The width of the asset to add to the image
- # (int) $assetHeight: The height of the asset to add to the image
- # (bol) $upperLeft: if true, the asset will be positioned based
- # on the upper left x, y coords. If false, it means you're
- # using the lower left as the basepoint and this will
- # convert it to the upper left position
- # Params out:
- # NOTE: this is done from the UPPER left corner!! But will convert lower
- # left basepoints to upper left if $upperleft is set to false
- #
- #
- {
- $pos = fix_strtolower($pos);
- // *** If co-ords have been entered
- if (strstr($pos, 'x')) {
- $pos = str_replace(' ', '', $pos);
- $xyArray = explode('x', $pos);
- list($width, $height) = $xyArray;
- } else {
- switch ($pos) {
- case 'tl':
- $width = 0 + $padding;
- $height = 0 + $padding;
- break;
- case 't':
- $width = ($this->width / 2) - ($assetWidth / 2);
- $height = 0 + $padding;
- break;
- case 'tr':
- $width = $this->width - $assetWidth - $padding;
- $height = 0 + $padding;;
- break;
- case 'l':
- $width = 0 + $padding;
- $height = ($this->height / 2) - ($assetHeight / 2);
- break;
- case 'm':
- $width = ($this->width / 2) - ($assetWidth / 2);
- $height = ($this->height / 2) - ($assetHeight / 2);
- break;
- case 'r':
- $width = $this->width - $assetWidth - $padding;
- $height = ($this->height / 2) - ($assetHeight / 2);
- break;
- case 'bl':
- $width = 0 + $padding;
- $height = $this->height - $assetHeight - $padding;
- break;
- case 'b':
- $width = ($this->width / 2) - ($assetWidth / 2);
- $height = $this->height - $assetHeight - $padding;
- break;
- case 'br':
- $width = $this->width - $assetWidth - $padding;
- $height = $this->height - $assetHeight - $padding;
- break;
- default:
- $width = 0;
- $height = 0;
- break;
- }
- }
- if (!$upperLeft) {
- $height = $height + $assetHeight;
- }
- return array('width' => $width, 'height' => $height);
- }
- ## --------------------------------------------------------
- private function filterOpacity(&$img, $opacity = 75)
- #
- # Author: aiden dot mail at freemail dot hu
- # Author date: 29-03-08 08:16
- # Date added: 08-05-11
- # Purpose: Change opacity of image
- # Params in: $img: Image resource id
- # (int) $opacity: the opacity amount: 0-100, 100 being not opaque.
- # Params out: (bool) true on success, else false
- # Ref: http://www.php.net/manual/en/function.imagefilter.php#82162
- # Notes: png only
- #
- {
- if (!isset($opacity)) {
- return false;
- }
- if ($opacity == 100) {
- return true;
- }
- $opacity /= 100;
- //get image width and height
- $w = imagesx($img);
- $h = imagesy($img);
- //turn alpha blending off
- imagealphablending($img, false);
- //find the most opaque pixel in the image (the one with the smallest alpha value)
- $minalpha = 127;
- for ($x = 0; $x < $w; $x++)
- for ($y = 0; $y < $h; $y++) {
- $alpha = ( imagecolorat($img, $x, $y) >> 24 ) & 0xFF;
- if ($alpha < $minalpha) {
- $minalpha = $alpha;
- }
- }
- //loop through image pixels and modify alpha for each
- for ($x = 0; $x < $w; $x++) {
- for ($y = 0; $y < $h; $y++) {
- //get current alpha value (represents the TANSPARENCY!)
- $colorxy = imagecolorat($img, $x, $y);
- $alpha = ( $colorxy >> 24 ) & 0xFF;
- //calculate new alpha
- if ($minalpha !== 127) {
- $alpha = 127 + 127 * $opacity * ( $alpha - 127 ) / ( 127 - $minalpha );
- } else {
- $alpha += 127 * $opacity;
- }
- //get the color index with new alpha
- $alphacolorxy = imagecolorallocatealpha($img, ( $colorxy >> 16 ) & 0xFF, ( $colorxy >> 8 ) & 0xFF, $colorxy & 0xFF, $alpha);
- //set pixel with the new color + opacity
- if (!imagesetpixel($img, $x, $y, $alphacolorxy)) {
- return false;
- }
- }
- }
- return true;
- }
- ## --------------------------------------------------------
- private function openImage($file)
- # Author: Jarrod Oberto
- # Date: 27-02-08
- # Purpose:
- # Param in:
- # Param out: n/a
- # Reference:
- # Notes:
- #
- {
- if (!file_exists($file) && !$this->checkStringStartsWith('http://', $file)) { if ($this->debug) { throw new Exception('Image not found.'); }else{ throw new Exception(); }};
- // *** Get extension
- $extension = strrchr($file, '.');
- $extension = fix_strtolower($extension);
- switch($extension)
- {
- case '.jpg':
- case '.jpeg':
- $img = @imagecreatefromjpeg($file);
- break;
- case '.gif':
- $img = @imagecreatefromgif($file);
- break;
- case '.png':
- $img = @imagecreatefrompng($file);
- break;
- case '.bmp':
- $img = @$this->imagecreatefrombmp($file);
- break;
- case '.psd':
- $img = @$this->imagecreatefrompsd($file);
- break;
- // ... etc
- default:
- $img = false;
- break;
- }
- return $img;
- }
- ## --------------------------------------------------------
- public function reset()
- #
- # Author: Jarrod Oberto
- # Date: 30-08-11
- # Purpose: Reset the resource (allow further editing)
- # Params in:
- # Params out:
- # Notes:
- #
- {
- $this->__construct($this->fileName);
- }
- ## --------------------------------------------------------
- public function saveImage($savePath, $imageQuality="100")
- # Author: Jarrod Oberto
- # Date: 27-02-08
- # Purpose: Saves the image
- # Param in: $savePath: Where to save the image including filename:
- # $imageQuality: image quality you want the image saved at 0-100
- # Param out: n/a
- # Reference:
- # Notes: * gif doesn't have a quality parameter
- # * jpg has a quality setting 0-100 (100 being the best)
- # * png has a quality setting 0-9 (0 being the best)
- #
- # * bmp files have no native support for bmp files. We use a
- # third party class to save as bmp.
- {
- // *** Perform a check or two.
- if (!is_resource($this->imageResized)) { if ($this->debug) { throw new Exception('saveImage: This is not a resource.'); }else{ throw new Exception(); }}
- $fileInfoArray = pathInfo($savePath);
- clearstatcache();
- if (!is_writable($fileInfoArray['dirname'])) { if ($this->debug) { throw new Exception('The path is not writable. Please check your permissions.'); }else{ throw new Exception(); }}
- // *** Get extension
- $extension = strrchr($savePath, '.');
- $extension = fix_strtolower($extension);
- $error = '';
- switch($extension)
- {
- case '.jpg':
- case '.jpeg':
- $this->checkInterlaceImage($this->isInterlace);
- if (imagetypes() & IMG_JPG) {
- imagejpeg($this->imageResized, $savePath, $imageQuality);
- } else { $error = 'jpg'; }
- break;
- case '.gif':
- $this->checkInterlaceImage($this->isInterlace);
- if (imagetypes() & IMG_GIF) {
- imagegif($this->imageResized, $savePath);
- } else { $error = 'gif'; }
- break;
- case '.png':
- // *** Scale quality from 0-100 to 0-9
- $scaleQuality = round(($imageQuality/100) * 9);
- // *** Invert qualit setting as 0 is best, not 9
- $invertScaleQuality = 9 - $scaleQuality;
- $this->checkInterlaceImage($this->isInterlace);
- if (imagetypes() & IMG_PNG) {
- imagepng($this->imageResized, $savePath, $invertScaleQuality);
- } else { $error = 'png'; }
- break;
- case '.bmp':
- file_put_contents($savePath, $this->GD2BMPstring($this->imageResized));
- break;
- // ... etc
- default:
- // *** No extension - No save.
- $this->errorArray[] = 'This file type (' . $extension . ') is not supported. File not saved.';
- break;
- }
- //imagedestroy($this->imageResized);
- // *** Display error if a file type is not supported.
- if ($error != '') {
- $this->errorArray[] = $error . ' support is NOT enabled. File not saved.';
- }
- }
- ## --------------------------------------------------------
- public function displayImage($fileType = 'jpg', $imageQuality="100")
- # Author: Jarrod Oberto
- # Date: 18-11-09
- # Purpose: Display images directly to the browser
- # Param in: The image type you want to display
- # Param out:
- # Reference:
- # Notes:
- #
- {
- if (!is_resource($this->imageResized)) { if ($this->debug) { throw new Exception('saveImage: This is not a resource.'); }else{ throw new Exception(); }}
- switch($fileType)
- {
- case 'jpg':
- case 'jpeg':
- header('Content-type: image/jpeg');
- imagejpeg($this->imageResized, '', $imageQuality);
- break;
- case 'gif':
- header('Content-type: image/gif');
- imagegif($this->imageResized);
- break;
- case 'png':
- header('Content-type: image/png');
- // *** Scale quality from 0-100 to 0-9
- $scaleQuality = round(($imageQuality/100) * 9);
- // *** Invert qualit setting as 0 is best, not 9
- $invertScaleQuality = 9 - $scaleQuality;
- imagepng($this->imageResized, '', $invertScaleQuality);
- break;
- case 'bmp':
- echo 'bmp file format is not supported.';
- break;
- // ... etc
- default:
- // *** No extension - No save.
- break;
- }
- //imagedestroy($this->imageResized);
- }
- ## --------------------------------------------------------
- public function setTransparency($bool)
- # Sep 2011
- {
- $this->keepTransparency = $bool;
- }
- ## --------------------------------------------------------
- public function setFillColor($value)
- # Sep 2011
- # Param in: (mixed) $value: (array) Could be an array of RGB
- # (str) Could be hex #ffffff or #fff, fff, ffffff
- #
- # If the keepTransparency is set to false, then no transparency is to be used.
- # This is ideal when you want to save as jpg.
- #
- # this method allows you to set the background color to use instead of
- # transparency.
- #
- {
- $colorArray = $this->formatColor($value);
- $this->fillColorArray = $colorArray;
- }
- ## --------------------------------------------------------
- public function setCropFromTop($value)
- # Sep 2011
- {
- $this->cropFromTopPercent = $value;
- }
- ## --------------------------------------------------------
- public function testGDInstalled()
- # Author: Jarrod Oberto
- # Date: 27-02-08
- # Purpose: Test to see if GD is installed
- # Param in: n/a
- # Param out: (bool) True is gd extension loaded otherwise false
- # Reference:
- # Notes:
- #
- {
- if(extension_loaded('gd') && function_exists('gd_info'))
- {
- $gdInstalled = true;
- }
- else
- {
- $gdInstalled = false;
- }
- return $gdInstalled;
- }
- ## --------------------------------------------------------
- public function testEXIFInstalled()
- # Author: Jarrod Oberto
- # Date: 08-05-11
- # Purpose: Test to see if EXIF is installed
- # Param in: n/a
- # Param out: (bool) True is exif extension loaded otherwise false
- # Reference:
- # Notes:
- #
- {
- if(extension_loaded('exif'))
- {
- $exifInstalled = true;
- }
- else
- {
- $exifInstalled = false;
- }
- return $exifInstalled;
- }
- ## --------------------------------------------------------
- public function testIsImage($image)
- # Author: Jarrod Oberto
- # Date: 27-02-08
- # Purpose: Test if file is an image
- # Param in: n/a
- # Param out: n/a
- # Reference:
- # Notes:
- #
- {
- if ($image)
- {
- $fileIsImage = true;
- }
- else
- {
- $fileIsImage = false;
- }
- return $fileIsImage;
- }
- ## --------------------------------------------------------
- public function testFunct()
- # Author: Jarrod Oberto
- # Date: 27-02-08
- # Purpose: Test Function
- # Param in: n/a
- # Param out: n/a
- # Reference:
- # Notes:
- #
- {
- echo $this->height;
- }
- ## --------------------------------------------------------
- public function setForceStretch($value)
- # Author: Jarrod Oberto
- # Date: 23-12-10
- # Purpose:
- # Param in: (bool) $value
- # Param out: n/a
- # Reference:
- # Notes:
- #
- {
- $this->forceStretch = $value;
- }
- ## --------------------------------------------------------
- public function setFile($fileName)
- # Author: Jarrod Oberto
- # Date: 28-02-08
- # Purpose:
- # Param in: n/a
- # Param out: n/a
- # Reference:
- # Notes:
- #
- {
- self::__construct($fileName);
- }
- ## --------------------------------------------------------
- public function getFileName()
- # Author: Jarrod Oberto
- # Date: 10-09-08
- # Purpose:
- # Param in: n/a
- # Param out: n/a
- # Reference:
- # Notes:
- #
- {
- return $this->fileName;
- }
- ## --------------------------------------------------------
- public function getHeight()
- {
- return $this->height;
- }
- ## --------------------------------------------------------
- public function getWidth()
- {
- return $this->width;
- }
- ## --------------------------------------------------------
- public function getOriginalHeight()
- {
- return $this->heightOriginal;
- }
- ## --------------------------------------------------------
- public function getOriginalWidth()
- {
- return $this->widthOriginal;
- }
- ## --------------------------------------------------------
- public function getErrors()
- # Author: Jarrod Oberto
- # Date: 19-11-09
- # Purpose: Returns the error array
- # Param in: n/a
- # Param out: Array of errors
- # Reference:
- # Notes:
- #
- {
- return $this->errorArray;
- }
- ## --------------------------------------------------------
- private function checkInterlaceImage($isEnabled)
- # jpg will use progressive (they don't use interace)
- {
- if ($isEnabled) {
- imageinterlace($this->imageResized, $isEnabled);
- }
- }
- ## --------------------------------------------------------
- protected function formatColor($value)
- # Author: Jarrod Oberto
- # Date: 09-05-11
- # Purpose: Determine color method passed in and return color as RGB
- # Param in: (mixed) $value: (array) Could be an array of RGB
- # (str) Could be hex #ffffff or #fff, fff, ffffff
- # Param out:
- # Reference:
- # Notes:
- #
- {
- $rgbArray = array();
- // *** If it's an array it should be R, G, B
- if (is_array($value)) {
- if (key($value) == 0 && count($value) == 3) {
- $rgbArray['r'] = $value[0];
- $rgbArray['g'] = $value[1];
- $rgbArray['b'] = $value[2];
- } else {
- $rgbArray = $value;
- }
- } else if (fix_strtolower($value) == 'transparent') {
- $rgbArray = array(
- 'r' => 255,
- 'g' => 255,
- 'b' => 255,
- 'a' => 127
- );
- } else {
- // *** ...Else it should be hex. Let's make it RGB
- $rgbArray = $this -> hex2dec($value);
- }
- return $rgbArray;
- }
- ## --------------------------------------------------------
- function hex2dec($hex)
- # Purpose: Convert #hex color to RGB
- {
- $color = str_replace('#', '', $hex);
- if (strlen($color) == 3) {
- $color = $color . $color;
- }
- $rgb = array(
- 'r' => hexdec(substr($color, 0, 2)),
- 'g' => hexdec(substr($color, 2, 2)),
- 'b' => hexdec(substr($color, 4, 2)),
- 'a' => 0
- );
- return $rgb;
- }
- ## --------------------------------------------------------
- private function createImageColor ($colorArray)
- {
- $r = $colorArray['r'];
- $g = $colorArray['g'];
- $b = $colorArray['b'];
- return imagecolorallocate($this->imageResized, $r, $g, $b);
- }
- ## --------------------------------------------------------
- private function testColorExists($colorArray)
- {
- $r = $colorArray['r'];
- $g = $colorArray['g'];
- $b = $colorArray['b'];
- if (imagecolorexact($this->imageResized, $r, $g, $b) == -1) {
- return false;
- } else {
- return true;
- }
- }
- ## --------------------------------------------------------
- private function findUnusedGreen()
- # Purpose: We find a green color suitable to use like green-screen effect.
- # Therefore, the color must not exist in the image.
- {
- $green = 255;
- do {
- $greenChroma = array(0, $green, 0);
- $colorArray = $this->formatColor($greenChroma);
- $match = $this->testColorExists($colorArray);
- $green--;
- } while ($match == false && $green > 0);
- // *** If no match, just bite the bullet and use green value of 255
- if (!$match) {
- $greenChroma = array(0, $green, 0);
- }
- return $greenChroma;
- }
- ## --------------------------------------------------------
- private function findUnusedBlue()
- # Purpose: We find a green color suitable to use like green-screen effect.
- # Therefore, the color must not exist in the image.
- {
- $blue = 255;
- do {
- $blueChroma = array(0, 0, $blue);
- $colorArray = $this->formatColor($blueChroma);
- $match = $this->testColorExists($colorArray);
- $blue--;
- } while ($match == false && $blue > 0);
- // *** If no match, just bite the bullet and use blue value of 255
- if (!$match) {
- $blueChroma = array(0, 0, $blue);
- }
- return $blueChroma;
- }
- ## --------------------------------------------------------
- private function invertTransparency($value, $originalMax, $invert=true)
- # Purpose: This does two things:
- # 1) Convert the range from 0-127 to 0-100
- # 2) Inverts value to 100 is not transparent while 0 is fully
- # transparent (like Photoshop)
- {
- // *** Test max range
- if ($value > $originalMax) {
- $value = $originalMax;
- }
- // *** Test min range
- if ($value < 0) {
- $value = 0;
- }
- if ($invert) {
- return $originalMax - (($value/100) * $originalMax);
- } else {
- return ($value/100) * $originalMax;
- }
- }
- ## --------------------------------------------------------
- private function transparentImage($src)
- {
- // *** making images with white bg transparent
- $r1 = 0;
- $g1 = 255;
- $b1 = 0;
- for ($x = 0; $x < imagesx($src); ++$x) {
- for ($y = 0; $y < imagesy($src); ++$y) {
- $color = imagecolorat($src, $x, $y);
- $r = ($color >> 16) & 0xFF;
- $g = ($color >> 8) & 0xFF;
- $b = $color & 0xFF;
- for ($i = 0; $i < 270; $i++) {
- //if ($r . $g . $b == ($r1 + $i) . ($g1 + $i) . ($b1 + $i)) {
- if ($r == 0 && $g == 255 && $b == 0) {
- //if ($g == 255) {
- $trans_colour = imagecolorallocatealpha($src, 0, 0, 0, 127);
- imagefill($src, $x, $y, $trans_colour);
- }
- }
- }
- }
- return $src;
- }
- ## --------------------------------------------------------
- function checkStringStartsWith($needle, $haystack)
- # Check if a string starts with a specific pattern
- {
- return (substr($haystack, 0, strlen($needle))==$needle);
- }
- /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
- BMP SUPPORT (SAVING) - James Heinrich
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
- private function GD2BMPstring(&$gd_image)
- # Author: James Heinrich
- # Purpose: Save file as type bmp
- # Param in: The image canvas (passed as ref)
- # Param out:
- # Reference:
- # Notes: This code was stripped out of two external files
- # (phpthumb.bmp.php,phpthumb.functions.php) and added below to
- # avoid dependancies.
- #
- {
- $imageX = ImageSX($gd_image);
- $imageY = ImageSY($gd_image);
- $BMP = '';
- for ($y = ($imageY - 1); $y >= 0; $y--) {
- $thisline = '';
- for ($x = 0; $x < $imageX; $x++) {
- $argb = $this->GetPixelColor($gd_image, $x, $y);
- $thisline .= chr($argb['blue']).chr($argb['green']).chr($argb['red']);
- }
- while (strlen($thisline) % 4) {
- $thisline .= "\x00";
- }
- $BMP .= $thisline;
- }
- $bmpSize = strlen($BMP) + 14 + 40;
- // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp
- $BITMAPFILEHEADER = 'BM'; // WORD bfType;
- $BITMAPFILEHEADER .= $this->LittleEndian2String($bmpSize, 4); // DWORD bfSize;
- $BITMAPFILEHEADER .= $this->LittleEndian2String( 0, 2); // WORD bfReserved1;
- $BITMAPFILEHEADER .= $this->LittleEndian2String( 0, 2); // WORD bfReserved2;
- $BITMAPFILEHEADER .= $this->LittleEndian2String( 54, 4); // DWORD bfOffBits;
- // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp
- $BITMAPINFOHEADER = $this->LittleEndian2String( 40, 4); // DWORD biSize;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( $imageX, 4); // LONG biWidth;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( $imageY, 4); // LONG biHeight;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 1, 2); // WORD biPlanes;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 24, 2); // WORD biBitCount;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 0, 4); // DWORD biCompression;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 0, 4); // DWORD biSizeImage;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 2835, 4); // LONG biXPelsPerMeter;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 2835, 4); // LONG biYPelsPerMeter;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 0, 4); // DWORD biClrUsed;
- $BITMAPINFOHEADER .= $this->LittleEndian2String( 0, 4); // DWORD biClrImportant;
- return $BITMAPFILEHEADER.$BITMAPINFOHEADER.$BMP;
- }
- ## --------------------------------------------------------
- private function GetPixelColor(&$img, $x, $y)
- # Author: James Heinrich
- # Purpose:
- # Param in:
- # Param out:
- # Reference:
- # Notes:
- #
- {
- if (!is_resource($img)) {
- return false;
- }
- return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
- }
- ## --------------------------------------------------------
- private function LittleEndian2String($number, $minbytes=1)
- # Author: James Heinrich
- # Purpose: BMP SUPPORT (SAVING)
- # Param in:
- # Param out:
- # Reference:
- # Notes:
- #
- {
- $intstring = '';
- while ($number > 0) {
- $intstring = $intstring.chr($number & 255);
- $number >>= 8;
- }
- return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
- }
- /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
- BMP SUPPORT (READING)
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
- private function ImageCreateFromBMP($filename)
- # Author: DHKold
- # Date: The 15th of June 2005
- # Version: 2.0B
- # Purpose: To create an image from a BMP file.
- # Param in: BMP file to open.
- # Param out: Return a resource like the other ImageCreateFrom functions
- # Reference: http://us3.php.net/manual/en/function.imagecreate.php#53879
- # Bug fix: Author: domelca at terra dot es
- # Date: 06 March 2008
- # Fix: Correct 16bit BMP support
- # Notes:
- #
- {
- //Ouverture du fichier en mode binaire
- if (! $f1 = fopen($filename,"rb")) return FALSE;
- //1 : Chargement des ent�tes FICHIER
- $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
- if ($FILE['file_type'] != 19778) return FALSE;
- //2 : Chargement des ent�tes BMP
- $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
- '/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
- '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($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;
- //3 : Chargement des couleurs de la palette
- $PALETTE = array();
- if ($BMP['colors'] < 16777216)
- {
- $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
- }
- //4 : Cr�ation de l'image
- $IMG = fread($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)
- $COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
- elseif ($BMP['bits_per_pixel'] == 16)
- {
- /*
- * BMP 16bit fix
- * =================
- *
- * Ref: http://us3.php.net/manual/en/function.imagecreate.php#81604
- *
- * Notes:
- * "don't work with bmp 16 bits_per_pixel. change pixel
- * generator for this."
- *
- */
- // *** Original code (don't work)
- //$COLOR = unpack("n",substr($IMG,$P,2));
- //$COLOR[1] = $PALETTE[$COLOR[1]+1];
- $COLOR = unpack("v",substr($IMG,$P,2));
- $blue = ($COLOR[1] & 0x001f) << 3;
- $green = ($COLOR[1] & 0x07e0) >> 3;
- $red = ($COLOR[1] & 0xf800) >> 8;
- $COLOR[1] = $red * 65536 + $green * 256 + $blue;
- }
- elseif ($BMP['bits_per_pixel'] == 8)
- {
- $COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
- $COLOR[1] = $PALETTE[$COLOR[1]+1];
- }
- elseif ($BMP['bits_per_pixel'] == 4)
- {
- $COLOR = unpack("n",$VIDE.substr($IMG,floor($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($IMG,floor($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'];
- }
- //Fermeture du fichier
- fclose($f1);
- return $res;
- }
- /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*-
- PSD SUPPORT (READING)
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-**-*-*-*-*-*-*-*-*-*-*-*-*-*/
- private function imagecreatefrompsd($fileName)
- # Author: Tim de Koning
- # Version: 1.3
- # Purpose: To create an image from a PSD file.
- # Param in: PSD file to open.
- # Param out: Return a resource like the other ImageCreateFrom functions
- # Reference: http://www.kingsquare.nl/phppsdreader
- # Notes:
- #
- {
- if (file_exists($this->psdReaderPath)) {
- include_once($this->psdReaderPath);
- $psdReader = new PhpPsdReader($fileName);
- if (isset($psdReader->infoArray['error'])) return '';
- else return $psdReader->getImage();
- } else {
- return false;
- }
- }
- ## --------------------------------------------------------
- public function __destruct() {
- if (is_resource($this->imageResized)) {
- imagedestroy($this->imageResized);
- }
- }
- ## --------------------------------------------------------
- }
- /*
- * Example with some API calls (outdated):
- *
- *
- * ===============================
- * Compulsary
- * ===============================
- *
- * include("classes/resize_class.php");
- *
- * // *** Initialise object
- * $magicianObj = new resize('images/cars/large/a.jpg');
- *
- * // *** Turn off stretching (optional)
- * $magicianObj -> setForceStretch(false);
- *
- * // *** Resize object
- * $magicianObj -> resizeImage(150, 100, 0);
- *
- * ===============================
- * Image options - can run none, one, or all.
- * ===============================
- *
- * // *** Add watermark
- * $magicianObj -> addWatermark('stamp.png');
- *
- * // *** Add text
- * $magicianObj -> addText('testing...');
- *
- * ===============================
- * Output options - can run one, or the other, or both.
- * ===============================
- *
- * // *** Save image to disk
- * $magicianObj -> saveImage('images/cars/large/b.jpg', 100);
- *
- * // *** Or output to screen (params in can be jpg, gif, png)
- * $magicianObj -> displayImage('png');
- *
- * ===============================
- * Return options - return errors. nice for debuggin.
- * ===============================
- *
- * // *** Return error array
- * $errorArray = $magicianObj -> getErrors();
- *
- *
- * ===============================
- * Cleanup options - not really neccessary, but good practice
- * ===============================
- *
- * // *** Free used memory
- * $magicianObj -> __destruct();
- */
- ?>