/wp-content/plugins/nextgen-gallery/lib/gd.thumbnail.inc.php
PHP | 950 lines | 549 code | 105 blank | 296 comment | 93 complexity | 142fde6644b4ceaea966d1d0f711066f MD5 | raw file
- <?php
- /**
- * gd.thumbnail.inc.php
- *
- * @author Ian Selby (ian@gen-x-design.com)
- * @copyright Copyright 2006-2011
- * @version 1.2.1 (based on 1.1.3)
- * @modded by Alex Rabe
- *
- */
- /**
- * PHP class for dynamically resizing, cropping, and rotating images for thumbnail purposes and either displaying them on-the-fly or saving them.
- *
- */
- class ngg_Thumbnail {
- /**
- * Error message to display, if any
- *
- * @var string
- */
- var $errmsg;
- /**
- * Whether or not there is an error
- *
- * @var boolean
- */
- var $error;
- /**
- * Format of the image file
- *
- * @var string
- */
- var $format;
- /**
- * File name and path of the image file
- *
- * @var string
- */
- var $fileName;
- /**
- * Current dimensions of working image
- *
- * @var array
- */
- var $currentDimensions;
- /**
- * New dimensions of working image
- *
- * @var array
- */
- var $newDimensions;
- /**
- * Image resource for newly manipulated image
- *
- * @var resource
- * @access private
- */
- var $newImage;
- /**
- * Image resource for image before previous manipulation
- *
- * @var resource
- * @access private
- */
- var $oldImage;
- /**
- * Image resource for image being currently manipulated
- *
- * @var resource
- * @access private
- */
- var $workingImage;
- /**
- * Percentage to resize image by
- *
- * @var int
- * @access private
- */
- var $percent;
- /**
- * Maximum width of image during resize
- *
- * @var int
- * @access private
- */
- var $maxWidth;
- /**
- * Maximum height of image during resize
- *
- * @var int
- * @access private
- */
- var $maxHeight;
- /**
- * Image for Watermark
- *
- * @var string
- *
- */
- var $watermarkImgPath;
- /**
- * Text for Watermark
- *
- * @var string
- *
- */
- var $watermarkText;
- /**
- * Image Resource ID for Watermark
- *
- * @var string
- *
- */
- function ngg_Thumbnail($fileName,$no_ErrorImage = false) {
- //make sure the GD library is installed
- if(!function_exists("gd_info")) {
- echo 'You do not have the GD Library installed. This class requires the GD library to function properly.' . "\n";
- echo 'visit http://us2.php.net/manual/en/ref.image.php for more information';
- exit;
- }
- //initialize variables
- $this->errmsg = '';
- $this->error = false;
- $this->currentDimensions = array();
- $this->newDimensions = array();
- $this->fileName = $fileName;
- $this->percent = 100;
- $this->maxWidth = 0;
- $this->maxHeight = 0;
- $this->watermarkImgPath = '';
- $this->watermarkText = '';
- //check to see if file exists
- if(!file_exists($this->fileName)) {
- $this->errmsg = 'File not found';
- $this->error = true;
- }
- //check to see if file is readable
- elseif(!is_readable($this->fileName)) {
- $this->errmsg = 'File is not readable';
- $this->error = true;
- }
-
- //if there are no errors, determine the file format
- if($this->error == false) {
- $data = @getimagesize($this->fileName);
- if (isset($data) && is_array($data)) {
- $extensions = array('1' => 'GIF', '2' => 'JPG', '3' => 'PNG');
- $extension = array_key_exists($data[2], $extensions) ? $extensions[$data[2]] : '';
- if($extension) {
- $this->format = $extension;
- } else {
- $this->errmsg = 'Unknown file format';
- $this->error = true;
- }
- } else {
- $this->errmsg = 'File is not an image';
- $this->error = true;
- }
- }
-
- // increase memory-limit if possible, GD needs this for large images
- // @ini_set('memory_limit', '128M');
-
- if($this->error == false) {
- // Check memory consumption if file exists
- $this->checkMemoryForImage($this->fileName);
- }
- //initialize resources if no errors
- if($this->error == false) {
- switch($this->format) {
- case 'GIF':
- $this->oldImage = ImageCreateFromGif($this->fileName);
- break;
- case 'JPG':
- $this->oldImage = ImageCreateFromJpeg($this->fileName);
- break;
- case 'PNG':
- $this->oldImage = ImageCreateFromPng($this->fileName);
- break;
- }
- if (!$this->oldImage) {
- $this->errmsg = 'Create Image failed. Check memory limit';
- $this->error = true;
- } else {
- $size = GetImageSize($this->fileName);
- $this->currentDimensions = array('width'=>$size[0],'height'=>$size[1]);
- $this->newImage = $this->oldImage;
- }
- }
- if($this->error == true) {
- if(!$no_ErrorImage)
- $this->showErrorImage();
- return;
- }
- }
- /**
- * Calculate the memory limit
- *
- */
- function checkMemoryForImage( $filename ){
-
- if ( (function_exists('memory_get_usage')) && (ini_get('memory_limit')) ) {
- $imageInfo = getimagesize($filename);
- switch($this->format) {
- case 'GIF':
- // measured factor 1 is better
- $CHANNEL = 1;
- break;
- case 'JPG':
- $CHANNEL = $imageInfo['channels'];
- break;
- case 'PNG':
- // didn't get the channel for png
- $CHANNEL = 3;
- break;
- }
- $MB = 1048576; // number of bytes in 1M
- $K64 = 65536; // number of bytes in 64K
- $TWEAKFACTOR = 1.68; // Or whatever works for you
- $memoryNeeded = round( ( $imageInfo[0] * $imageInfo[1]
- * $imageInfo['bits']
- * $CHANNEL / 8
- + $K64
- ) * $TWEAKFACTOR
- );
- $memoryNeeded = memory_get_usage() + $memoryNeeded;
- // get memory limit
- $memory_limit = ini_get('memory_limit');
- if ($memory_limit != '') {
- $memory_limit = substr($memory_limit, 0, -1) * 1024 * 1024;
- }
-
- if ($memoryNeeded > $memory_limit) {
- $memoryNeeded = round ($memoryNeeded / 1024 / 1024, 2);
- $this->errmsg = 'Exceed Memory limit. Require : '.$memoryNeeded. " MByte" ;
- $this->error = true;
- }
- }
- return;
- }
- /**
- * Must be called to free up allocated memory after all manipulations are done
- *
- */
- function destruct() {
- if(is_resource($this->newImage)) @ImageDestroy($this->newImage);
- if(is_resource($this->oldImage)) @ImageDestroy($this->oldImage);
- if(is_resource($this->workingImage)) @ImageDestroy($this->workingImage);
- }
- /**
- * Returns the current width of the image
- *
- * @return int
- */
- function getCurrentWidth() {
- return $this->currentDimensions['width'];
- }
- /**
- * Returns the current height of the image
- *
- * @return int
- */
- function getCurrentHeight() {
- return $this->currentDimensions['height'];
- }
- /**
- * Calculates new image width
- *
- * @param int $width
- * @param int $height
- * @return array
- */
- function calcWidth($width,$height) {
- $newWp = (100 * $this->maxWidth) / $width;
- $newHeight = ($height * $newWp) / 100;
- return array('newWidth'=>intval($this->maxWidth),'newHeight'=>intval($newHeight));
- }
- /**
- * Calculates new image height
- *
- * @param int $width
- * @param int $height
- * @return array
- */
- function calcHeight($width,$height) {
- $newHp = (100 * $this->maxHeight) / $height;
- $newWidth = ($width * $newHp) / 100;
- return array('newWidth'=>intval($newWidth),'newHeight'=>intval($this->maxHeight));
- }
- /**
- * Calculates new image size based on percentage
- *
- * @param int $width
- * @param int $height
- * @return array
- */
- function calcPercent($width,$height) {
- $newWidth = ($width * $this->percent) / 100;
- $newHeight = ($height * $this->percent) / 100;
- return array('newWidth'=>intval($newWidth),'newHeight'=>intval($newHeight));
- }
- /**
- * Calculates new image size based on width and height, while constraining to maxWidth and maxHeight
- *
- * @param int $width
- * @param int $height
- */
- function calcImageSize($width,$height) {
- $newSize = array('newWidth'=>$width,'newHeight'=>$height);
- if($this->maxWidth > 0) {
- $newSize = $this->calcWidth($width,$height);
- if($this->maxHeight > 0 && $newSize['newHeight'] > $this->maxHeight) {
- $newSize = $this->calcHeight($newSize['newWidth'],$newSize['newHeight']);
- }
- //$this->newDimensions = $newSize;
- }
- if($this->maxHeight > 0) {
- $newSize = $this->calcHeight($width,$height);
- if($this->maxWidth > 0 && $newSize['newWidth'] > $this->maxWidth) {
- $newSize = $this->calcWidth($newSize['newWidth'],$newSize['newHeight']);
- }
- //$this->newDimensions = $newSize;
- }
- $this->newDimensions = $newSize;
- }
- /**
- * Calculates new image size based percentage
- *
- * @param int $width
- * @param int $height
- */
- function calcImageSizePercent($width,$height) {
- if($this->percent > 0) {
- $this->newDimensions = $this->calcPercent($width,$height);
- }
- }
- /**
- * Displays error image
- *
- */
- function showErrorImage() {
- header('Content-type: image/png');
- $errImg = ImageCreate(220,25);
- $bgColor = imagecolorallocate($errImg,0,0,0);
- $fgColor1 = imagecolorallocate($errImg,255,255,255);
- $fgColor2 = imagecolorallocate($errImg,255,0,0);
- imagestring($errImg,3,6,6,'Error:',$fgColor2);
- imagestring($errImg,3,55,6,$this->errmsg,$fgColor1);
- imagepng($errImg);
- imagedestroy($errImg);
- }
- /**
- * Resizes image to fixed Width x Height
- *
- * @param int $Width
- * @param int $Height
- * @param int $resampleMode
- */
- function resizeFix($Width = 0, $Height = 0, $resampleMode = 3) {
- $this->newWidth = $Width;
- $this->newHeight = $Height;
- if(function_exists("ImageCreateTrueColor")) {
- $this->workingImage = ImageCreateTrueColor($this->newWidth,$this->newHeight);
- }
- else {
- $this->workingImage = ImageCreate($this->newWidth,$this->newHeight);
- }
- // ImageCopyResampled(
- $this->fastimagecopyresampled(
- $this->workingImage,
- $this->oldImage,
- 0,
- 0,
- 0,
- 0,
- $this->newWidth,
- $this->newHeight,
- $this->currentDimensions['width'],
- $this->currentDimensions['height'],
- $resampleMode
- );
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- $this->currentDimensions['width'] = $this->newWidth;
- $this->currentDimensions['height'] = $this->newHeight;
- }
- /**
- * Resizes image to maxWidth x maxHeight
- *
- * @param int $maxWidth
- * @param int $maxHeight
- * @param int $resampleMode
- */
- function resize($maxWidth = 0, $maxHeight = 0, $resampleMode = 3) {
- $this->maxWidth = $maxWidth;
- $this->maxHeight = $maxHeight;
- $this->calcImageSize($this->currentDimensions['width'],$this->currentDimensions['height']);
- if(function_exists("ImageCreateTrueColor")) {
- $this->workingImage = ImageCreateTrueColor($this->newDimensions['newWidth'],$this->newDimensions['newHeight']);
- }
- else {
- $this->workingImage = ImageCreate($this->newDimensions['newWidth'],$this->newDimensions['newHeight']);
- }
- // ImageCopyResampled(
- $this->fastimagecopyresampled(
- $this->workingImage,
- $this->oldImage,
- 0,
- 0,
- 0,
- 0,
- $this->newDimensions['newWidth'],
- $this->newDimensions['newHeight'],
- $this->currentDimensions['width'],
- $this->currentDimensions['height'],
- $resampleMode
- );
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- $this->currentDimensions['width'] = $this->newDimensions['newWidth'];
- $this->currentDimensions['height'] = $this->newDimensions['newHeight'];
- }
- /**
- * Resizes the image by $percent percent
- *
- * @param int $percent
- */
- function resizePercent($percent = 0) {
- $this->percent = $percent;
- $this->calcImageSizePercent($this->currentDimensions['width'],$this->currentDimensions['height']);
- if(function_exists("ImageCreateTrueColor")) {
- $this->workingImage = ImageCreateTrueColor($this->newDimensions['newWidth'],$this->newDimensions['newHeight']);
- }
- else {
- $this->workingImage = ImageCreate($this->newDimensions['newWidth'],$this->newDimensions['newHeight']);
- }
- ImageCopyResampled(
- $this->workingImage,
- $this->oldImage,
- 0,
- 0,
- 0,
- 0,
- $this->newDimensions['newWidth'],
- $this->newDimensions['newHeight'],
- $this->currentDimensions['width'],
- $this->currentDimensions['height']
- );
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- $this->currentDimensions['width'] = $this->newDimensions['newWidth'];
- $this->currentDimensions['height'] = $this->newDimensions['newHeight'];
- }
- /**
- * Crops the image from calculated center in a square of $cropSize pixels
- *
- * @param int $cropSize
- * @param int $resampleMode
- */
- function cropFromCenter($cropSize, $resampleMode = 3) {
- if($cropSize > $this->currentDimensions['width']) $cropSize = $this->currentDimensions['width'];
- if($cropSize > $this->currentDimensions['height']) $cropSize = $this->currentDimensions['height'];
- $cropX = intval(($this->currentDimensions['width'] - $cropSize) / 2);
- $cropY = intval(($this->currentDimensions['height'] - $cropSize) / 2);
- if(function_exists("ImageCreateTrueColor")) {
- $this->workingImage = ImageCreateTrueColor($cropSize,$cropSize);
- }
- else {
- $this->workingImage = ImageCreate($cropSize,$cropSize);
- }
- // imagecopyresampled(
- $this->fastimagecopyresampled(
- $this->workingImage,
- $this->oldImage,
- 0,
- 0,
- $cropX,
- $cropY,
- $cropSize,
- $cropSize,
- $cropSize,
- $cropSize,
- $resampleMode
- );
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- $this->currentDimensions['width'] = $cropSize;
- $this->currentDimensions['height'] = $cropSize;
- }
- /**
- * Advanced cropping function that crops an image using $startX and $startY as the upper-left hand corner.
- *
- * @param int $startX
- * @param int $startY
- * @param int $width
- * @param int $height
- */
- function crop($startX, $startY, $width, $height) {
- //make sure the cropped area is not greater than the size of the image
- if($width > $this->currentDimensions['width']) $width = $this->currentDimensions['width'];
- if($height > $this->currentDimensions['height']) $height = $this->currentDimensions['height'];
- //make sure not starting outside the image
- if(($startX + $width) > $this->currentDimensions['width']) $startX = ($this->currentDimensions['width'] - $width);
- if(($startY + $height) > $this->currentDimensions['height']) $startY = ($this->currentDimensions['height'] - $height);
- if($startX < 0) $startX = 0;
- if($startY < 0) $startY = 0;
- if(function_exists("ImageCreateTrueColor")) {
- $this->workingImage = ImageCreateTrueColor($width,$height);
- }
- else {
- $this->workingImage = ImageCreate($width,$height);
- }
- imagecopyresampled(
- $this->workingImage,
- $this->oldImage,
- 0,
- 0,
- $startX,
- $startY,
- $width,
- $height,
- $width,
- $height
- );
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- $this->currentDimensions['width'] = $width;
- $this->currentDimensions['height'] = $height;
- }
- /**
- * Outputs the image to the screen, or saves to $name if supplied. Quality of JPEG images can be controlled with the $quality variable
- *
- * @param int $quality
- * @param string $name
- */
- function show($quality=100,$name = '') {
- switch($this->format) {
- case 'GIF':
- if($name != '') {
- @ImageGif($this->newImage,$name) or $this->error = true;
- }
- else {
- header('Content-type: image/gif');
- ImageGif($this->newImage);
- }
- break;
- case 'JPG':
- if($name != '') {
- @ImageJpeg($this->newImage,$name,$quality) or $this->error = true;
- }
- else {
- header('Content-type: image/jpeg');
- ImageJpeg($this->newImage,'',$quality);
- }
- break;
- case 'PNG':
- if($name != '') {
- @ImagePng($this->newImage,$name) or $this->error = true;
- }
- else {
- header('Content-type: image/png');
- ImagePng($this->newImage);
- }
- break;
- }
- }
- /**
- * Saves image as $name (can include file path), with quality of # percent if file is a jpeg
- *
- * @param string $name
- * @param int $quality
- * @return bool errorstate
- */
- function save($name,$quality=100) {
- $this->show($quality,$name);
- if ($this->error == true) {
- $this->errmsg = 'Create Image failed. Check safe mode settings';
- return false;
- }
-
- if( function_exists('do_action') )
- do_action('ngg_ajax_image_save', $name);
- return true;
- }
- /**
- * Creates Apple-style reflection under image, optionally adding a border to main image
- *
- * @param int $percent
- * @param int $reflection
- * @param int $white
- * @param bool $border
- * @param string $borderColor
- */
- function createReflection($percent,$reflection,$white,$border = true,$borderColor = '#a4a4a4') {
- $width = $this->currentDimensions['width'];
- $height = $this->currentDimensions['height'];
- $reflectionHeight = intval($height * ($reflection / 100));
- $newHeight = $height + $reflectionHeight;
- $reflectedPart = $height * ($percent / 100);
- $this->workingImage = ImageCreateTrueColor($width,$newHeight);
- ImageAlphaBlending($this->workingImage,true);
- $colorToPaint = ImageColorAllocateAlpha($this->workingImage,255,255,255,0);
- ImageFilledRectangle($this->workingImage,0,0,$width,$newHeight,$colorToPaint);
- imagecopyresampled(
- $this->workingImage,
- $this->newImage,
- 0,
- 0,
- 0,
- $reflectedPart,
- $width,
- $reflectionHeight,
- $width,
- ($height - $reflectedPart));
- $this->imageFlipVertical();
- imagecopy($this->workingImage,$this->newImage,0,0,0,0,$width,$height);
- imagealphablending($this->workingImage,true);
- for($i=0;$i<$reflectionHeight;$i++) {
- $colorToPaint = imagecolorallocatealpha($this->workingImage,255,255,255,($i/$reflectionHeight*-1+1)*$white);
- imagefilledrectangle($this->workingImage,0,$height+$i,$width,$height+$i,$colorToPaint);
- }
- if($border == true) {
- $rgb = $this->hex2rgb($borderColor,false);
- $colorToPaint = imagecolorallocate($this->workingImage,$rgb[0],$rgb[1],$rgb[2]);
- imageline($this->workingImage,0,0,$width,0,$colorToPaint); //top line
- imageline($this->workingImage,0,$height,$width,$height,$colorToPaint); //bottom line
- imageline($this->workingImage,0,0,0,$height,$colorToPaint); //left line
- imageline($this->workingImage,$width-1,0,$width-1,$height,$colorToPaint); //right line
- }
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- $this->currentDimensions['width'] = $width;
- $this->currentDimensions['height'] = $newHeight;
- }
- /**
- * Flip an image.
- *
- * @param bool $horz flip the image in horizontal mode
- * @param bool $vert flip the image in vertical mode
- */
- function flipImage( $horz = false, $vert = false ) {
-
- $sx = $vert ? ($this->currentDimensions['width'] - 1) : 0;
- $sy = $horz ? ($this->currentDimensions['height'] - 1) : 0;
- $sw = $vert ? -$this->currentDimensions['width'] : $this->currentDimensions['width'];
- $sh = $horz ? -$this->currentDimensions['height'] : $this->currentDimensions['height'];
-
- $this->workingImage = imagecreatetruecolor( $this->currentDimensions['width'], $this->currentDimensions['height'] );
-
- imagecopyresampled($this->workingImage, $this->oldImage, 0, 0, $sx, $sy, $this->currentDimensions['width'], $this->currentDimensions['height'], $sw, $sh) ;
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
-
- return true;
- }
-
- /**
- * Rotate an image clockwise or counter clockwise
- *
- * @param string $direction could be CW or CCW
- */
- function rotateImage( $dir = 'CW' ) {
-
- $angle = ($dir == 'CW') ? 90 : -90;
-
- if ( function_exists('imagerotate') ) {
- $this->workingImage = imagerotate($this->oldImage, 360 - $angle, 0); // imagerotate() rotates CCW
- $this->currentDimensions['width'] = imagesx($this->workingImage);
- $this->currentDimensions['height'] = imagesy($this->workingImage);
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
- return true;
- }
-
- $this->workingImage = imagecreatetruecolor( $this->currentDimensions['height'], $this->currentDimensions['width'] );
-
- imagealphablending($this->workingImage, false);
- imagesavealpha($this->workingImage, true);
- switch ($angle) {
-
- case 90 :
- for( $x = 0; $x < $this->currentDimensions['width']; $x++ ) {
- for( $y = 0; $y < $this->currentDimensions['height']; $y++ ) {
- if ( !imagecopy($this->workingImage, $this->oldImage, $this->currentDimensions['height'] - $y - 1, $x, $x, $y, 1, 1) )
- return false;
- }
- }
- break;
-
- case -90 :
- for( $x = 0; $x < $this->currentDimensions['width']; $x++ ) {
- for( $y = 0; $y < $this->currentDimensions['height']; $y++ ) {
- if ( !imagecopy($this->workingImage, $this->oldImage, $y, $this->currentDimensions['width'] - $x - 1, $x, $y, 1, 1) )
- return false;
- }
- }
- break;
-
- default :
- return false;
- }
- $this->currentDimensions['width'] = imagesx($this->workingImage);
- $this->currentDimensions['height'] = imagesy($this->workingImage);
- $this->oldImage = $this->workingImage;
- $this->newImage = $this->workingImage;
-
- return true;
-
- }
- /**
- * Inverts working image, used by reflection function
- *
- * @access private
- */
- function imageFlipVertical() {
- $x_i = imagesx($this->workingImage);
- $y_i = imagesy($this->workingImage);
- for($x = 0; $x < $x_i; $x++) {
- for($y = 0; $y < $y_i; $y++) {
- imagecopy($this->workingImage,$this->workingImage,$x,$y_i - $y - 1, $x, $y, 1, 1);
- }
- }
- }
- /**
- * Converts hexidecimal color value to rgb values and returns as array/string
- *
- * @param string $hex
- * @param bool $asString
- * @return array|string
- */
- function hex2rgb($hex, $asString = false) {
- // strip off any leading #
- if (0 === strpos($hex, '#')) {
- $hex = substr($hex, 1);
- } else if (0 === strpos($hex, '&H')) {
- $hex = substr($hex, 2);
- }
- // break into hex 3-tuple
- $cutpoint = ceil(strlen($hex) / 2)-1;
- $rgb = explode(':', wordwrap($hex, $cutpoint, ':', $cutpoint), 3);
- // convert each tuple to decimal
- $rgb[0] = (isset($rgb[0]) ? hexdec($rgb[0]) : 0);
- $rgb[1] = (isset($rgb[1]) ? hexdec($rgb[1]) : 0);
- $rgb[2] = (isset($rgb[2]) ? hexdec($rgb[2]) : 0);
- return ($asString ? "{$rgb[0]} {$rgb[1]} {$rgb[2]}" : $rgb);
- }
-
- /**
- * Based on the Watermark function by Marek Malcherek
- * http://www.malcherek.de
- *
- * @param string $color
- * @param string $wmFont
- * @param int $wmSize
- * @param int $wmOpaque
- */
- function watermarkCreateText($color = '000000',$wmFont, $wmSize = 10, $wmOpaque = 90 ){
- // set font path
- $wmFontPath = NGGALLERY_ABSPATH."fonts/".$wmFont;
- if ( !is_readable($wmFontPath))
- return;
-
- // This function requires both the GD library and the FreeType library.
- if ( !function_exists('ImageTTFBBox') )
- return;
-
- $TextSize = @ImageTTFBBox($wmSize, 0, $wmFontPath, $this->watermarkText) or die;
- $TextWidth = abs($TextSize[2]) + abs($TextSize[0]);
- $TextHeight = abs($TextSize[7]) + abs($TextSize[1]);
- // Create Image for Text
- $this->workingImage = ImageCreateTrueColor($TextWidth, $TextHeight);
- ImageSaveAlpha($this->workingImage, true);
- ImageAlphaBlending($this->workingImage, false);
- $bgText = imagecolorallocatealpha($this->workingImage, 255, 255, 255, 127);
- imagefill($this->workingImage, 0, 0, $bgText);
- $wmTransp = 127 -( $wmOpaque * 1.27 );
- $rgb = $this->hex2rgb($color,false);
- $TextColor = imagecolorallocatealpha($this->workingImage, $rgb[0], $rgb[1], $rgb[2], $wmTransp);
-
- // Create Text on image
- imagettftext($this->workingImage, $wmSize, 0, 0, abs($TextSize[5]), $TextColor, $wmFontPath, $this->watermarkText);
- $this->watermarkImgPath = $this->workingImage;
- return;
- }
-
- /**
- * Modfied Watermark function by Steve Peart
- * http://parasitehosting.com/
- *
- * @param string $relPOS
- * @param int $xPOS
- * @param int $yPOS
- */
- function watermarkImage( $relPOS = 'botRight', $xPOS = 0, $yPOS = 0) {
-
- // if it's a resource ID take it as watermark text image
- if(is_resource($this->watermarkImgPath)) {
- $this->workingImage = $this->watermarkImgPath;
- } else {
- // Would you really want to use anything other than a png?
- $this->workingImage = @imagecreatefrompng($this->watermarkImgPath);
- // if it's not a valid file die...
- if (empty($this->workingImage) or (!$this->workingImage))
- return;
- }
-
- imagealphablending($this->workingImage, false);
- imagesavealpha($this->workingImage, true);
- $sourcefile_width=imageSX($this->oldImage);
- $sourcefile_height=imageSY($this->oldImage);
- $watermarkfile_width=imageSX($this->workingImage);
- $watermarkfile_height=imageSY($this->workingImage);
- switch(substr($relPOS, 0, 3)){
- case 'top': $dest_y = 0 + $yPOS; break;
- case 'mid': $dest_y = ($sourcefile_height / 2) - ($watermarkfile_height / 2); break;
- case 'bot': $dest_y = $sourcefile_height - $watermarkfile_height - $yPOS; break;
- default : $dest_y = 0; break;
- }
- switch(substr($relPOS, 3)){
- case 'Left' : $dest_x = 0 + $xPOS; break;
- case 'Center': $dest_x = ($sourcefile_width / 2) - ($watermarkfile_width / 2); break;
- case 'Right': $dest_x = $sourcefile_width - $watermarkfile_width - $xPOS; break;
- default : $dest_x = 0; break;
- }
-
- // debug
- // $this->errmsg = 'X '.$dest_x.' Y '.$dest_y;
- // $this->showErrorImage();
- // if a gif, we have to upsample it to a truecolor image
- if($this->format == 'GIF') {
- $tempimage = imagecreatetruecolor($sourcefile_width,$sourcefile_height);
- imagecopy($tempimage, $this->oldImage, 0, 0, 0, 0,$sourcefile_width, $sourcefile_height);
- $this->newImage = $tempimage;
- }
-
- imagecopy($this->newImage, $this->workingImage, $dest_x, $dest_y, 0, 0,$watermarkfile_width, $watermarkfile_height);
- }
-
- /**
- * Fast imagecopyresampled by tim@leethost.com
- *
- */
- function fastimagecopyresampled (&$dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h, $quality = 3) {
- // Plug-and-Play fastimagecopyresampled function replaces much slower imagecopyresampled.
- // Just include this function and change all "imagecopyresampled" references to "fastimagecopyresampled".
- // Typically from 30 to 60 times faster when reducing high resolution images down to thumbnail size using the default quality setting.
- // Author: Tim Eckel - Date: 12/17/04 - Project: FreeRingers.net - Freely distributable.
- //
- // Optional "quality" parameter (defaults is 3). Fractional values are allowed, for example 1.5.
- // 1 = Up to 600 times faster. Poor results, just uses imagecopyresized but removes black edges.
- // 2 = Up to 95 times faster. Images may appear too sharp, some people may prefer it.
- // 3 = Up to 60 times faster. Will give high quality smooth results very close to imagecopyresampled.
- // 4 = Up to 25 times faster. Almost identical to imagecopyresampled for most images.
- // 5 = No speedup. Just uses imagecopyresampled, highest quality but no advantage over imagecopyresampled.
-
- if (empty($src_image) || empty($dst_image)) { return false; }
-
- if ($quality <= 1) {
- $temp = imagecreatetruecolor ($dst_w + 1, $dst_h + 1);
- imagecopyresized ($temp, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w + 1, $dst_h + 1, $src_w, $src_h);
- imagecopyresized ($dst_image, $temp, 0, 0, 0, 0, $dst_w, $dst_h, $dst_w, $dst_h);
- imagedestroy ($temp);
- } elseif ($quality < 5 && (($dst_w * $quality) < $src_w || ($dst_h * $quality) < $src_h)) {
- $tmp_w = $dst_w * $quality;
- $tmp_h = $dst_h * $quality;
- // on whatever reason PHP 4.4.8 stopped here.
- $temp = imagecreatetruecolor ($tmp_w + 1, $tmp_h + 1);
- imagecopyresized ($temp, $src_image, $dst_x * $quality, $dst_y * $quality, $src_x, $src_y, $tmp_w + 1, $tmp_h + 1, $src_w, $src_h);
- imagecopyresampled ($dst_image, $temp, 0, 0, 0, 0, $dst_w, $dst_h, $tmp_w, $tmp_h);
- imagedestroy ($temp);
- } else {
- imagecopyresampled ($dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
- }
- return true;
- }
- }
- ?>