* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License * for more details.. * * The latest version of Image_Toolbox can be obtained from: * http://sourceforge.net/projects/image-toolbox * http://www.phpclasses.org/image_toolbox * * @author Martin Theimer * @copyright Copyright (C) 2003 Martin Theimer * @version 1.1.0 * @package Image_Toolbox * @link http://sourceforge.net/projects/image-toolbox */ // $Id: Image_Toolbox.class.php,v 1.9 2003/12/05 19:34:01 pappkamerad Exp $ if (!defined('IMAGE_TOOLBOX_DEFAULT_PNG_QUALITY')) { define('IMAGE_TOOLBOX_DEFAULT_PNG_QUALITY', 3); } if (!defined('IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY')) { define('IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY', 90); } if (!defined('IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS')) { define('IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS', 256); } if (!defined('IMAGE_TOOLBOX_BIAS_HORIZONTAL')) { define('IMAGE_TOOLBOX_BIAS_HORIZONTAL', 1); } if (!defined('IMAGE_TOOLBOX_BIAS_VERTICAL')) { define('IMAGE_TOOLBOX_BIAS_VERTICAL', 0); } if (!defined('IMAGE_TOOLBOX_BLEND_COPY')) { define('IMAGE_TOOLBOX_BLEND_COPY', 1); } if (!defined('IMAGE_TOOLBOX_BLEND_MULTIPLY')) { define('IMAGE_TOOLBOX_BLEND_MULTIPLY', 2); } if (!defined('IMAGE_TOOLBOX_BLEND_SCREEN')) { define('IMAGE_TOOLBOX_BLEND_SCREEN', 3); } if (!defined('IMAGE_TOOLBOX_BLEND_DIFFERENCE')) { define('IMAGE_TOOLBOX_BLEND_DIFFERENCE', 4); } if (!defined('IMAGE_TOOLBOX_BLEND_NEGATION')) { define('IMAGE_TOOLBOX_BLEND_NEGATION', 5); } if (!defined('IMAGE_TOOLBOX_BLEND_EXCLUSION')) { define('IMAGE_TOOLBOX_BLEND_EXCLUSION', 6); } if (!defined('IMAGE_TOOLBOX_BLEND_OVERLAY')) { define('IMAGE_TOOLBOX_BLEND_OVERLAY', 7); } /** * PHP image manipulation class * * This class provides an easy to use library to the PHP GD-based imagefunctions * * @author Martin Theimer * @copyright 2003, Martin Theimer * @package Image_Toolbox * @link http://sourceforge.net/projects/image-toolbox * @version 1.1.0 */ class Image_Toolbox { /** * The prefix for every error message * * @access private * @var string */ var $_error_prefix = 'Image: '; /** * Defines imagetypes and how they are supported by the server * * @access private * @var array */ var $_types = array ( 1 => array ( 'ext' => 'gif', 'mime' => 'image/gif', 'supported' => 0 ), 2 => array ( 'ext' => 'jpg', 'mime' => 'image/jpeg', 'supported' => 0 ), 3 => array ( 'ext' => 'png', 'mime' => 'image/png', 'supported' => 0 ) ); /** * Which PHP image resize function to be used * imagecopyresampled only supported with GD >= 2.0 * * @access private * @var string */ var $_resize_function = 'imagecopyresampled'; /** * Stores all image resource data * * @access private * @var array */ var $_img = array ( 'main' => array ( 'resource' => 0, 'width' => 0, 'height' => 0, 'bias' => 0, 'aspectratio' => 0, 'type' => 0, 'output_type' => 0, 'indexedcolors' => 0, 'color' => -1 ) ); /** * Which PHP image create function to be used * imagecreatetruecolor only supported with GD >= 2.0 * * @access private * @var string */ var $_imagecreatefunction = ''; /** * The class constructor. * * Determines the image features of the server and sets the according values.
* Additionally you can specify a image to be created/loaded. like {@link addImage() addImage}. * * If no parameter is given, no image resource will be generated
* Or:
* string $file imagefile to load
* Or:
* integer $width imagewidth of new image to be created
* integer $height imageheight of new image to be created
* string $fillcolor optional fill the new image with this color (hexformat, e.g. '#FF0000')
*/ function Image_Toolbox() { $args = func_get_args(); $argc = func_num_args(); //get GD information. see what types we can handle $gd_info = function_exists('gd_info') ? gd_info() : $this->_gd_info(); preg_match('/\A[\D]*([\d+\.]*)[\D]*\Z/', $gd_info['GD Version'], $matches); list($this->_gd_version_string, $this->_gd_version_number) = $matches; $this->_gd_version = substr($this->_gd_version_number, 0, strpos($this->_gd_version_number, '.')); if ($this->_gd_version >= 2) { $this->_imagecreatefunction = 'imagecreatetruecolor'; $this->_resize_function = 'imagecopyresampled'; } else { $this->_imagecreatefunction = 'imagecreate'; $this->_resize_function = 'imagecopyresized'; } $this->_gd_ttf = $gd_info['FreeType Support']; $this->_gd_ps = $gd_info['T1Lib Support']; if ($gd_info['GIF Read Support']) { $this->_types[1]['supported'] = 1; if ($gd_info['GIF Create Support']) { $this->_types[1]['supported'] = 2; } } if ((isset($gd_info['JPG Support']) && $gd_info['JPG Support']) || (isset($gd_info['JPEG Support']) && $gd_info['JPEG Support'])) { $this->_types[2]['supported'] = 2; } if ($gd_info['PNG Support']) { $this->_types[3]['supported'] = 2; } //load or create main image if ($argc == 0) { return true; } else { if ($this->_addImage($argc, $args)) { foreach ($this->_img['operator'] as $key => $value) { $this->_img['main'][$key] = $value; } $this->_img['main']['output_type'] = $this->_img['main']['type']; unset($this->_img['operator']); return true; } else { trigger_error($this->_error_prefix . 'No appropriate constructor found.', E_USER_ERROR); return null; } } } /** * Returns an assocative array with information about the image features of this server * * Array values: *
    *
  • 'gd_version' -> what GD version is installed on this server (e.g. 2.0)
  • *
  • 'gif' -> 0 = not supported, 1 = reading is supported, 2 = creating is supported
  • *
  • 'jpg' -> 0 = not supported, 1 = reading is supported, 2 = creating is supported
  • *
  • 'png' -> 0 = not supported, 1 = reading is supported, 2 = creating is supported
  • *
  • 'ttf' -> TTF text creation. true = supported, false = not supported *
* * @return array */ function getServerFeatures() { $features = array(); $features['gd_version'] = $this->_gd_version_number; $features['gif'] = $this->_types[1]['supported']; $features['jpg'] = $this->_types[2]['supported']; $features['png'] = $this->_types[3]['supported']; $features['ttf'] = $this->_gd_ttf; return $features; } /** * Flush all image resources and init a new one * * Parameter:
* string $file imagefile to load
* Or:
* integer $width imagewidth of new image to be created
* integer $height imageheight of new image to be created
* string $fillcolor optional fill the new image with this color (hexformat, e.g. '#FF0000')
*/ function newImage() { $args = func_get_args(); $argc = func_num_args(); if ($this->_addImage($argc, $args)) { foreach ($this->_img['operator'] as $key => $value) { $this->_img['main'][$key] = $value; } $this->_img['main']['output_type'] = $this->_img['main']['type']; unset($this->_img['operator']); return true; } else { trigger_error($this->_error_prefix . 'No appropriate constructor found.', E_USER_ERROR); return null; } } /** * Reimplements the original PHP {@link gd_info()} function for older PHP versions * * @access private * @return array associative array with info about the GD library of the server */ function _gd_info() { $array = array( "GD Version" => "", "FreeType Support" => false, "FreeType Linkage" => "", "T1Lib Support" => false, "GIF Read Support" => false, "GIF Create Support" => false, "JPG Support" => false, "PNG Support" => false, "WBMP Support" => false, "XBM Support" => false ); $gif_support = 0; ob_start(); eval("phpinfo();"); $info = ob_get_contents(); ob_end_clean(); foreach(explode("\n", $info) as $line) { if(strpos($line, "GD Version") !== false) $array["GD Version"] = trim(str_replace("GD Version", "", strip_tags($line))); if(strpos($line, "FreeType Support") !== false) $array["FreeType Support"] = trim(str_replace("FreeType Support", "", strip_tags($line))); if(strpos($line, "FreeType Linkage") !== false) $array["FreeType Linkage"] = trim(str_replace("FreeType Linkage", "", strip_tags($line))); if(strpos($line, "T1Lib Support") !== false) $array["T1Lib Support"] = trim(str_replace("T1Lib Support", "", strip_tags($line))); if(strpos($line, "GIF Read Support") !== false) $array["GIF Read Support"] = trim(str_replace("GIF Read Support", "", strip_tags($line))); if(strpos($line, "GIF Create Support") !== false) $array["GIF Create Support"] = trim(str_replace("GIF Create Support", "", strip_tags($line))); if(strpos($line, "GIF Support") !== false) $gif_support = trim(str_replace("GIF Support", "", strip_tags($line))); if(strpos($line, "JPG Support") !== false) $array["JPG Support"] = trim(str_replace("JPG Support", "", strip_tags($line))); if(strpos($line, "PNG Support") !== false) $array["PNG Support"] = trim(str_replace("PNG Support", "", strip_tags($line))); if(strpos($line, "WBMP Support") !== false) $array["WBMP Support"] = trim(str_replace("WBMP Support", "", strip_tags($line))); if(strpos($line, "XBM Support") !== false) $array["XBM Support"] = trim(str_replace("XBM Support", "", strip_tags($line))); } if($gif_support === "enabled") { $array["GIF Read Support"] = true; $array["GIF Create Support"] = true; } if($array["FreeType Support"] === "enabled") { $array["FreeType Support"] = true; } if($array["T1Lib Support"] === "enabled") { $array["T1Lib Support"] = true; } if($array["GIF Read Support"] === "enabled") { $array["GIF Read Support"] = true; } if($array["GIF Create Support"] === "enabled") { $array["GIF Create Support"] = true; } if($array["JPG Support"] === "enabled") { $array["JPG Support"] = true; } if($array["PNG Support"] === "enabled") { $array["PNG Support"] = true; } if($array["WBMP Support"] === "enabled") { $array["WBMP Support"] = true; } if($array["XBM Support"] === "enabled") { $array["XBM Support"] = true; } return $array; } /** * Convert a color defined in hexvalues to the PHP color format * * @access private * @param string $hex color value in hexformat (e.g. '#FF0000') * @return integer color value in PHP format */ function _hexToPHPColor($hex) { $length = strlen($hex); $dr = hexdec(substr($hex, $length - 6, 2)); $dg = hexdec(substr($hex, $length - 4, 2)); $db = hexdec(substr($hex, $length - 2, 2)); $color = ($dr << 16) + ($dg << 8) + $db; return $color; } /** * Convert a color defined in hexvalues to corresponding dezimal values * * @access private * @param string $hex color value in hexformat (e.g. '#FF0000') * @return array associative array with color values in dezimal format (fields: 'red', 'green', 'blue') */ function _hexToDecColor($hex) { $length = strlen($hex); $color['red'] = hexdec(substr($hex, $length - 6, 2)); $color['green'] = hexdec(substr($hex, $length - 4, 2)); $color['blue'] = hexdec(substr($hex, $length - 2, 2)); return $color; } /** * Generate a new image resource based on the given parameters * * Parameter: * string $file imagefile to load
* Or:
* integer $width imagewidth of new image to be created
* integer $height imageheight of new image to be created
* string $fillcolor optional fill the new image with this color (hexformat, e.g. '#FF0000')
* * @access private */ function _addImage($argc, $args) { if (($argc == 2 || $argc == 3) && is_int($args[0]) && is_int($args[1]) && (is_string($args[2]) || !isset($args[2]))) { //neues leeres bild mit width und height (fillcolor optional) $this->_img['operator']['width'] = $args[0]; $this->_img['operator']['height'] = $args[1]; ($this->_img['operator']['width'] >= $this->_img['operator']['height']) ? ($this->_img['operator']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['operator']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL); $this->_img['operator']['aspectratio'] = $this->_img['operator']['width'] / $this->_img['operator']['height']; $this->_img['operator']['indexedcolors'] = 0; $functionname = $this->_imagecreatefunction; $this->_img['operator']['resource'] = $functionname($this->_img['operator']['width'], $this->_img['operator']['height']); // set default type jpg. $this->_img['operator']['type'] = 2; if (isset($args[2]) && is_string($args[2])) { //neues bild mit farbe fЃllen $fillcolor = $this->_hexToPHPColor($args[2]); imagefill($this->_img['operator']['resource'], 0, 0, $fillcolor); $this->_img['operator']['color'] = $fillcolor; } else { $this->_img['operator']['color'] = 0; } } elseif ($argc == 1 && is_string($args[0])) { //bild aus datei laden. width und height original gr”sse $this->_img['operator'] = $this->_loadFile($args[0]); $this->_img['operator']['indexedcolors'] = imagecolorstotal($this->_img['operator']['resource']); $this->_img['operator']['color'] = -1; } else { return false; } return true; } /** * Loads a image file * * @access private * @param string $filename imagefile to load * @return array associative array with the loaded filedata */ function _loadFile($filename) { if (file_exists($filename)) { $info = getimagesize($filename); $filedata['width'] = $info[0]; $filedata['height'] = $info[1]; ($filedata['width'] >= $filedata['height']) ? ($filedata['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($filedata['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL); $filedata['aspectratio'] = $filedata['width'] / $filedata['height']; $filedata['type'] = $info[2]; if ($this->_types[$filedata['type']]['supported'] < 1) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$filedata['type']]['ext'].') not supported for reading.', E_USER_ERROR); return null; } switch ($filedata['type']) { case 1: $dummy = imagecreatefromgif($filename); $functionname = $this->_imagecreatefunction; $filedata['resource'] = $functionname($filedata['width'], $filedata['height']); imagecopy($filedata['resource'], $dummy, 0, 0, 0, 0, $filedata['width'], $filedata['height']); imagedestroy($dummy); break; case 2: $filedata['resource'] = imagecreatefromjpeg($filename); break; case 3: $dummy = imagecreatefrompng($filename); if (imagecolorstotal($dummy) != 0) { $functionname = $this->_imagecreatefunction; $filedata['resource'] = $functionname($filedata['width'], $filedata['height']); imagecopy($filedata['resource'], $dummy, 0, 0, 0, 0, $filedata['width'], $filedata['height']); } else { $filedata['resource'] = $dummy; } unset($dummy); break; default: trigger_error($this->_error_prefix . 'Imagetype not supported.', E_USER_ERROR); return null; } return $filedata; } else { trigger_error($this->_error_prefix . 'Imagefile (' . $filename . ') does not exist.', E_USER_ERROR); return null; } } /** * Output a image to the browser * * $output_type can be one of the following:
*
    *
  • 'gif' -> gif image (if supported) (8-bit indexed colors)
  • *
  • 'png' -> png image (if supported) (truecolor)
  • *
  • 'png8' -> png image (if supported) (8-bit indexed colors)
  • *
  • 'jpg' -> jpeg image (if supported) (truecolor)
  • *
* (default: same as original) * * $dither:
* If this is true than dither is used on the conversion from truecolor to 8-bit indexed imageformats (png8, gif)
* (default = false) * * @param string|integer $output_type type of outputted image * @param integer $output_quality jpeg quality of outputted image (default: IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY) * @param bool $dither use dither * @return bool true on success, otherwise false */ function output($output_type = false, $output_quality = false, $dither = false) { if ($output_type === false) { $output_type = $this->_img['main']['output_type']; } switch ($output_type) { case 1: case 'gif': case 'GIF': if ($this->_types[1]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } header ('Content-type: ' . $this->_types[$output_type]['mime']); if ($this->_gd_version >= 2) { if ($this->_img['main']['indexedcolors'] == 0) { $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']); imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']); if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS; } imagetruecolortopalette($dummy, $dither, $output_quality); } imagegif($dummy); imagedestroy($dummy); } else { imagegif($this->_img['main']['resource']); } break; case 2: case '2': case 'jpg': case 'jpeg': case 'JPG': case 'JPEG': if ($this->_types[2]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } header ('Content-type: ' . $this->_types[$output_type]['mime']); if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY; } imagejpeg($this->_img['main']['resource'], null, $output_quality); break; case 3: case '3': case 'png': case 'PNG': case 'png24': case 'PNG24': if ($this->_types[3]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } header ('Content-type: ' . $this->_types[$output_type]['mime']); if (version_compare(PHP_VERSION, '5.1.2', '>=')) { if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_PNG_QUALITY; } imagepng($this->_img['main']['resource'], null, $output_quality); } else { imagepng($this->_img['main']['resource']); } break; case 4: case '4': case 'png8': case 'PNG8': if ($this->_types[3]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } header ('Content-type: ' . $this->_types[$output_type]['mime']); if ($this->_gd_version >= 2) { if ($this->_img['main']['indexedcolors'] == 0) { $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']); imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']); imagetruecolortopalette($dummy, $dither, 255); } if (version_compare(PHP_VERSION, '5.1.2', '>=')) { if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_PNG_QUALITY; } imagepng($dummy, null, $output_quality); } else { imagepng($dummy); } imagedestroy($dummy); } else { imagepng($this->_img['main']['resource']); } break; default: trigger_error($this->_error_prefix . 'Output-Imagetype not supported.', E_USER_ERROR); return null; } return true; } /** * Save a image to disk * * $output_type can be one of the following:
*
    *
  • 'gif' -> gif image (if supported) (8-bit indexed colors)
  • *
  • 'png' -> png image (if supported) (truecolor)
  • *
  • 'png8' -> png image (if supported) (8-bit indexed colors)
  • *
  • 'jpg' -> jpeg image (if supported) (truecolor)
  • *
* (default: same as original) * * $dither:
* If this is true than dither is used on the conversion from truecolor to 8-bit indexed imageformats (png8, gif)
* (default = false) * * @param string $filename filename of saved image * @param string|integer $output_type type of saved image * @param integer $output_quality jpeg quality of saved image (default: IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY) * @param bool $dither use dither * @return bool true on success, otherwise false */ function save($filename, $output_type = false, $output_quality = false, $dither = false) { if ($output_type === false) { $output_type = $this->_img['main']['output_type']; } switch ($output_type) { case 1: case 'gif': case 'GIF': if ($this->_types[1]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } if ($this->_gd_version >= 2) { if ($this->_img['main']['indexedcolors'] == 0) { $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']); imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']); if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS; } imagetruecolortopalette($dummy, $dither, $output_quality); } imagegif($dummy, $filename); imagedestroy($dummy); } else { imagegif($this->_img['main']['resource']); } break; case 2: case '2': case 'jpg': case 'jpeg': case 'JPG': case 'JPEG': if ($this->_types[2]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY; } imagejpeg($this->_img['main']['resource'], $filename, $output_quality); break; case 3: case '3': case 'png': case 'PNG': case 'png24': case 'PNG24': if ($this->_types[3]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } if (version_compare(PHP_VERSION, '5.1.2', '>=')) { if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_PNG_QUALITY; } imagepng($this->_img['main']['resource'], $filename, $output_quality); } else { imagepng($this->_img['main']['resource'], $filename); } break; case 4: case '4': case 'png8': case 'PNG8': if ($this->_types[3]['supported'] < 2) { trigger_error($this->_error_prefix . 'Imagetype ('.$this->_types[$output_type]['ext'].') not supported for creating/writing.', E_USER_ERROR); return null; } if ($this->_gd_version >= 2) { if ($this->_img['main']['indexedcolors'] == 0) { $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']); imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']); imagetruecolortopalette($dummy, $dither, 255); } if (version_compare(PHP_VERSION, '5.1.2', '>=')) { if ($output_quality === false) { $output_quality = IMAGE_TOOLBOX_DEFAULT_PNG_QUALITY; } imagepng($dummy, $filename, $output_quality); } else { imagepng($dummy, $filename); } imagedestroy($dummy); } else { imagepng($this->_img['main']['resource'], $filename); } break; default: trigger_error($this->_error_prefix . 'Output-Imagetype not supported.', E_USER_ERROR); return null; } return true; } /** * Sets the resize method of choice * * $method can be one of the following:
*
    *
  • 'resize' -> supported by every version of GD (fast but ugly resize of image)
  • *
  • 'resample' -> only supported by GD version >= 2.0 (slower but antialiased resize of image)
  • *
* * @param string|integer $method resize method * @return bool true on success, otherwise false */ function setResizeMethod($method) { switch ($method) { case 1: case '1': case 'resize': $this->_resize_function = 'imagecopyresized'; break; case 2: case '2': case 'resample': if (!function_exists('imagecopyresampled')) { // no error message. just return false. return null; } $this->_resize_function = 'imagecopyresampled'; break; default: trigger_error($this->_error_prefix . 'Resizemethod not supported.', E_USER_ERROR); return null; } return true; } /** * Resize the current image * * if $width = 0 the new width will be calculated from the $height value preserving the correct aspectratio.
* * if $height = 0 the new height will be calculated from the $width value preserving the correct aspectratio.
* * $mode can be one of the following:
*
    *
  • 0 -> image will be resized to the new output size, regardless of the original aspectratio. (default)
  • *
  • 1 -> image will be cropped if necessary to preserve the aspectratio and avoid image distortions.
  • *
  • 2 -> image will be resized preserving its original aspectratio. differences to the new outputsize will be filled with $bgcolor
  • *
* * if $autorotate is set to true the given $width and $height values may "change place" if the given image bias is different from the original one.
* if either $width or $height is 0, the new size will be applied to either the new width or the new height based on the bias value of the original image.
* (default = false) * * @param integer $width new width of image * @param integer $height new height of image * @param integer $mode resize mode * @param bool $autorotate use autorotating * @param string $bgcolor background fillcolor (hexformat, e.g. '#FF0000') * @return bool true on success, otherwise false */ function newOutputSize($width, $height, $mode = 0, $autorotate = false, $bgcolor = '#000000') { if ($width > 0 && $height > 0 && is_int($width) && is_int($height)) { //ignore aspectratio if (!$mode) { //do not crop to get correct aspectratio ($width >= $height) ? ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL); if ($this->_img['main']['bias'] == $this->_img['target']['bias'] || !$autorotate) { $this->_img['target']['width'] = $width; $this->_img['target']['height'] = $height; } else { $this->_img['target']['width'] = $height; $this->_img['target']['height'] = $width; } $this->_img['target']['aspectratio'] = $this->_img['target']['width'] / $this->_img['target']['height']; $cpy_w = $this->_img['main']['width']; $cpy_h = $this->_img['main']['height']; $cpy_w_offset = 0; $cpy_h_offset = 0; } elseif ($mode == 1) { //crop to get correct aspectratio ($width >= $height) ? ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL); if ($this->_img['main']['bias'] == $this->_img['target']['bias'] || !$autorotate) { $this->_img['target']['width'] = $width; $this->_img['target']['height'] = $height; } else { $this->_img['target']['width'] = $height; $this->_img['target']['height'] = $width; } $this->_img['target']['aspectratio'] = $this->_img['target']['width'] / $this->_img['target']['height']; if ($this->_img['main']['width'] / $this->_img['target']['width'] >= $this->_img['main']['height'] / $this->_img['target']['height']) { $cpy_h = $this->_img['main']['height']; $cpy_w = (integer) $this->_img['main']['height'] * $this->_img['target']['aspectratio']; $cpy_w_offset = (integer) ($this->_img['main']['width'] - $cpy_w) / 2; $cpy_h_offset = 0; } else { $cpy_w = $this->_img['main']['width']; $cpy_h = (integer) $this->_img['main']['width'] / $this->_img['target']['aspectratio']; $cpy_h_offset = (integer) ($this->_img['main']['height'] - $cpy_h) / 2; $cpy_w_offset = 0; } } elseif ($mode == 2) { //fill remaining background with a color to keep aspectratio $final_aspectratio = $width / $height; if ($final_aspectratio < $this->_img['main']['aspectratio']) { $this->_img['target']['width'] = $width; $this->_img['target']['height'] = (integer) $width / $this->_img['main']['aspectratio']; $cpy_w_offset2 = 0; $cpy_h_offset2 = (integer) (($height - $this->_img['target']['height']) / 2); } else { $this->_img['target']['height'] = $height; $this->_img['target']['width'] = (integer) $height * $this->_img['main']['aspectratio']; $cpy_h_offset2 = 0; $cpy_w_offset2 = (integer) (($width - $this->_img['target']['width']) / 2); } $this->_img['target']['aspectratio'] = $this->_img['main']['aspectratio']; $cpy_w = $this->_img['main']['width']; $cpy_h = $this->_img['main']['height']; $cpy_w_offset = 0; $cpy_h_offset = 0; } elseif ($mode == 3) { //fill remaining background with a color to keep aspectratio $final_aspectratio = $width / $height; if ($final_aspectratio < $this->_img['main']['aspectratio']) { $this->_img['target']['width'] = $width; $this->_img['target']['height'] = (integer) $width / $this->_img['main']['aspectratio']; $cpy_w_offset2 = 0; $cpy_h_offset2 = (integer) (($height - $this->_img['target']['height']) / 2); } else { $this->_img['target']['height'] = $height; $this->_img['target']['width'] = (integer) $height * $this->_img['main']['aspectratio']; $cpy_h_offset2 = 0; $cpy_w_offset2 = 0; } $this->_img['target']['aspectratio'] = $this->_img['main']['aspectratio']; $cpy_w = $this->_img['main']['width']; $cpy_h = $this->_img['main']['height']; $cpy_w_offset = 0; $cpy_h_offset = 0; } } elseif (($width == 0 && $height > 0) || ($width > 0 && $height == 0) && is_int($width) && is_int($height)) { //keep aspectratio if ($autorotate == true) { if ($this->_img['main']['bias'] == IMAGE_TOOLBOX_BIAS_HORIZONTAL && $width > 0) { $height = $width; $width = 0; } elseif ($this->_img['main']['bias'] == IMAGE_TOOLBOX_BIAS_VERTICAL && $height > 0) { $width = $height; $height = 0; } } ($width >= $height) ? ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL); if ($width != 0) { $this->_img['target']['width'] = $width; $this->_img['target']['height'] = (integer) $width / $this->_img['main']['aspectratio']; } else { $this->_img['target']['height'] = $height; $this->_img['target']['width'] = (integer) $height * $this->_img['main']['aspectratio']; } $this->_img['target']['aspectratio'] = $this->_img['main']['aspectratio']; $cpy_w = $this->_img['main']['width']; $cpy_h = $this->_img['main']['height']; $cpy_w_offset = 0; $cpy_h_offset = 0; } else { trigger_error($this->_error_prefix . 'Outputwidth and -height must be integers greater zero.', E_USER_ERROR); return null; } //create resized picture $functionname = $this->_imagecreatefunction; $dummy = $functionname($this->_img['target']['width'] + 1, $this->_img['target']['height'] + 1); if ($this->_img['main']['type'] == 3) { imagealphablending($dummy, false); imagesavealpha($dummy, true); } $resize_function = $this->_resize_function; $resize_function($dummy, $this->_img["main"]["resource"], 0, 0, $cpy_w_offset, $cpy_h_offset, $this->_img["target"]["width"], $this->_img["target"]["height"], $cpy_w, $cpy_h); if ($mode == 2) { $this->_img['target']['resource'] = $functionname($width, $height); $fillcolor = $this->_hexToPHPColor($bgcolor); imagefill($this->_img['target']['resource'], 0, 0, $fillcolor); } else { $this->_img['target']['resource'] = $functionname($this->_img['target']['width'], $this->_img['target']['height']); $cpy_w_offset2 = 0; $cpy_h_offset2 = 0; } if ($this->_img['main']['type'] == 3) { imagealphablending($this->_img['target']['resource'], false); imagesavealpha($this->_img['target']['resource'], true); } imagecopy($this->_img['target']['resource'], $dummy, $cpy_w_offset2, $cpy_h_offset2, 0, 0, $this->_img['target']['width'], $this->_img['target']['height']); imagedestroy($dummy); if ($mode == 2) { $this->_img['target']['width'] = $width; $this->_img['target']['height'] = $height; } //update _img['main'] with new data foreach ($this->_img['target'] as $key => $value) { $this->_img['main'][$key] = $value; } unset ($this->_img['target']); return true; } /** * Adds a new image resource based on the given parameters. * * It does not overwrite the existing image resource.
* Instead it is used to load a second image to merge with the existing image. * * Parameter:
* string $file imagefile to load
* Or:
* integer $width imagewidth of new image to be created
* integer $height imageheight of new image to be created
* string $fillcolor optional fill the new image with this color (hexformat, e.g. '#FF0000')
*/ function addImage() { $args = func_get_args(); $argc = func_num_args(); if ($this->_addImage($argc, $args)) { return true; } else { trigger_error($this->_error_prefix . 'failed to add image.', E_USER_ERROR); return false; } } /** * Blend two images. * * Original image and the image loaded with {@link addImage() addImage}
* NOTE: This operation can take very long and is not intended for realtime use. * (but of course depends on the power of your server :) ) * * IMPORTANT: {@link imagecopymerge() imagecopymerged} doesn't work with PHP 4.3.2. Bug ID: {@link http://bugs.php.net/bug.php?id=24816 24816}
* * $x:
* negative values are possible.
* You can also use the following keywords ('left', 'center' or 'middle', 'right').
* Additionally you can specify an offset in pixel with the keywords like this 'left +10'.
* (default = 0) * * $y:
* negative values are possible.
* You can also use the following keywords ('top', 'center' or 'middle', 'bottom').
* Additionally you can specify an offset in pixel with the keywords like this 'bottom -10'.
* (default = 0) * * Possible values for $mode: *
    *
  • IMAGE_TOOLBOX_BLEND_COPY
  • *
  • IMAGE_TOOLBOX_BLEND_MULTIPLY
  • *
  • IMAGE_TOOLBOX_BLEND_SCREEN
  • *
  • IMAGE_TOOLBOX_BLEND_DIFFERENCE
  • *
  • IMAGE_TOOLBOX_BLEND_EXCLUSION
  • *
  • IMAGE_TOOLBOX_BLEND_OVERLAY
  • *
* * $percent:
* alpha value in percent of blend effect (0 - 100)
* (default = 100) * * @param string|integer $x Horizontal position of second image. * @param integer $y Vertical position of second image. negative values are possible. * @param integer $mode blend mode. * @param integer $percent alpha value */ function blend($x = 0, $y = 0, $mode = IMAGE_TOOLBOX_BLEND_COPY, $percent = 100) { if (is_string($x) || is_string($y)) { list($xalign, $xalign_offset) = explode(" ", $x); list($yalign, $yalign_offset) = explode(" ", $y); } if (is_string($x)) { switch ($xalign) { case 'left': $dst_x = 0 + $xalign_offset; $src_x = 0; $src_w = $this->_img['operator']['width']; break; case 'right': $dst_x = ($this->_img['main']['width'] - $this->_img['operator']['width']) + $xalign_offset; $src_x = 0; $src_w = $this->_img['operator']['width']; break; case 'middle': case 'center': $dst_x = (($this->_img['main']['width'] / 2) - ($this->_img['operator']['width'] / 2)) + $yalign_offset; $src_x = 0; $src_w = $this->_img['operator']['width']; break; } } else { if ($x >= 0) { $dst_x = $x; $src_x = 0; $src_w = $this->_img['operator']['width']; } else { $dst_x = 0; $src_x = abs($x); $src_w = $this->_img['operator']['width'] - $src_x; } } if (is_string($y)) { switch ($yalign) { case 'top': $dst_y = 0 + $yalign_offset; $src_y = 0; $src_h = $this->_img['operator']['height']; break; case 'bottom': $dst_y = ($this->_img['main']['height'] - $this->_img['operator']['height']) + $yalign_offset; $src_y = 0; $src_h = $this->_img['operator']['height']; break; case 'middle': case 'center': $dst_y = (($this->_img['main']['height'] / 2) - ($this->_img['operator']['height'] / 2)) + $yalign_offset; $src_y = 0; $src_h = $this->_img['operator']['height']; break; } } else { if ($y >= 0) { $dst_y = $y; $src_y = 0; $src_h = $this->_img['operator']['height']; } else { $dst_y = 0; $src_y = abs($y); $src_h = $this->_img['operator']['height'] - $src_y; } } if(($xalign == 'repeat') && ($yalign == 'repeat')){ $xLogoPosition = 0; $yLogoPosition = 0; $widthWatermark = $this->_img['operator']['width']; $heightWatermark = $this->_img['operator']['height']; $widthPhoto = $this->_img['main']['width']; $heightPhoto = $this->_img['main']['height']; // x line $__xRepeat = ceil($widthPhoto / $widthWatermark); for ($i = 0; $i <= $__xRepeat; $i++) { $this->_imagecopymerge_alpha($this->_img['main']['resource'], $this->_img['operator']['resource'], ($xLogoPosition + $widthWatermark * $i), $yLogoPosition, 0, 0, ImageSX($this->_img['operator']['resource']), ImageSY($this->_img['operator']['resource']), $percent); // y line $__yRepeat = ceil($heightPhoto / $heightWatermark); for ($ii = 1; $ii <= $__yRepeat; $ii++) { $this->_imagecopymerge_alpha($this->_img['main']['resource'], $this->_img['operator']['resource'], ($xLogoPosition + $widthWatermark * $i), ($yLogoPosition + $widthWatermark * $ii), 0, 0, ImageSX($this->_img['operator']['resource']), ImageSY($this->_img['operator']['resource']), $percent); } } }else{ $this->_imageBlend($mode, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent); } return true; } /* * PNG ALPHA CHANNEL SUPPORT for imagecopymerge(); * This is a function like imagecopymerge but it handle alpha channel well!!! */ private function _imagecopymerge_alpha($dst_im, $src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $pct){ $opacity = $pct; // creating a cut resource $cut = imagecreatetruecolor($src_w, $src_h); // copying that section of the background to the cut imagecopy($cut, $dst_im, 0, 0, $dst_x, $dst_y, $src_w, $src_h); // placing the watermark now imagecopy($cut, $src_im, 0, 0, $src_x, $src_y, $src_w, $src_h); imagecopymerge($dst_im, $cut, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $opacity); } /** * Blend two images. * * @access private */ function _imageBlend($mode, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent) { if ($mode == IMAGE_TOOLBOX_BLEND_COPY) { if ($percent == 100) { imagecopy($this->_img['main']['resource'], $this->_img['operator']['resource'], $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h); } else { $this->_imagecopymerge_alpha($this->_img['main']['resource'], $this->_img['operator']['resource'], $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent); } } else { $functionname = $this->_imagecreatefunction; $dummy = $functionname($src_w, $src_h); for ($y=0; $y < $src_h; $y++) { for ($x=0; $x < $src_w; $x++) { $colorindex = imagecolorat($this->_img['main']['resource'], $dst_x + $x, $dst_y + $y); $colorrgb1 = imagecolorsforindex($this->_img['main']['resource'], $colorindex); $colorindex = imagecolorat($this->_img['operator']['resource'], $src_x + $x, $src_y + $y); $colorrgb2 = imagecolorsforindex($this->_img['operator']['resource'], $colorindex); $colorblend = $this->_calculateBlendvalue($mode, $colorrgb1, $colorrgb2); $newcolor = imagecolorallocate($dummy, $colorblend['red'], $colorblend['green'], $colorblend['blue']); imagesetpixel($dummy, $x, $y, $newcolor); } } $this->_img['target']['resource'] = $functionname($this->_img['main']['width'], $this->_img['main']['height']); imagecopy($this->_img['target']['resource'], $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']); imagecopymerge($this->_img['target']['resource'], $dummy, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent); $this->_img['main']['resource'] = $this->_img['target']['resource']; unset($this->_img['target']); } } /** * Calculate blend values for given blend mode * * @access private */ function _calculateBlendvalue($mode, $colorrgb1, $colorrgb2) { switch ($mode) { case IMAGE_TOOLBOX_BLEND_MULTIPLY: $c['red'] = ($colorrgb1['red'] * $colorrgb2['red']) >> 8; $c['green'] = ($colorrgb1['green'] * $colorrgb2['green']) >> 8; $c['blue'] = ($colorrgb1['blue'] * $colorrgb2['blue']) >> 8; break; case IMAGE_TOOLBOX_BLEND_SCREEN: $c['red'] = 255 - ((255 - $colorrgb1['red']) * (255 - $colorrgb2['red']) >> 8); $c['green'] = 255 - ((255 - $colorrgb1['green']) * (255 - $colorrgb2['green']) >> 8); $c['blue'] = 255 - ((255 - $colorrgb1['blue']) * (255 - $colorrgb2['blue']) >> 8); break; case IMAGE_TOOLBOX_BLEND_DIFFERENCE: $c['red'] = abs($colorrgb1['red'] - $colorrgb2['red']); $c['green'] = abs($colorrgb1['green'] - $colorrgb2['green']); $c['blue'] = abs($colorrgb1['blue'] - $colorrgb2['blue']); break; case IMAGE_TOOLBOX_BLEND_NEGATION: $c['red'] = 255 - abs(255 - $colorrgb1['red'] - $colorrgb2['red']); $c['green'] = 255 - abs(255 - $colorrgb1['green'] - $colorrgb2['green']); $c['blue'] = 255 - abs(255 - $colorrgb1['blue'] - $colorrgb2['blue']); break; case IMAGE_TOOLBOX_BLEND_EXCLUSION: $c['red'] = $colorrgb1['red'] + $colorrgb2['red'] - (($colorrgb1['red'] * $colorrgb2['red']) >> 7); $c['green'] = $colorrgb1['green'] + $colorrgb2['green'] - (($colorrgb1['green'] * $colorrgb2['green']) >> 7); $c['blue'] = $colorrgb1['blue'] + $colorrgb2['blue'] - (($colorrgb1['blue'] * $colorrgb2['blue']) >> 7); break; case IMAGE_TOOLBOX_BLEND_OVERLAY: if ($colorrgb1['red'] < 128) { $c['red']= ($colorrgb1['red'] * $colorrgb2['red']) >> 7; } else { $c['red'] = 255 - ((255 - $colorrgb1['red']) * (255 - $colorrgb2['red']) >> 7); } if ($colorrgb1['green'] < 128) { $c['green'] = ($colorrgb1['green'] * $colorrgb2['green']) >> 7; } else { $c['green'] = 255 - ((255 - $colorrgb1['green']) * (255 - $colorrgb2['green']) >> 7); } if ($colorrgb1['blue'] < 128) { $c['blue'] = ($colorrgb1['blue'] * $colorrgb2['blue']) >> 7; } else { $c['blue'] = 255 - ((255 - $colorrgb1['blue']) * (255 - $colorrgb2['blue']) >> 7); } break; default: break; } return $c; } /** * convert iso character coding to unicode (PHP conform) * needed for TTF text generation of special characters (Latin-2) * * @access private */ function _iso2uni($isoline) { $iso2uni = array( 173 => "¡", 155 => "¢", 156 => "£", 15 => "¤", 157 => "¥", 124 => "¦", 21 => "§", 249 => "¨", 184 => "©", 166 => "ª", 174 => "«", 170 => "¬", 169 => "®", 238 => "¯", 248 => "°", 241 => "±", 253 => "²", 252 => "³", 239 => "´", 230 => "µ", 20 => "¶", 250 => "·", 247 => "¸", 251 => "¹", 167 => "º", 175 => "»", 172 => "¼", 171 => "½", 243 => "¾", 168 => "¿", 183 => "À", 181 => "Á", 182 => "Â", 199 => "Ã", 142 => "Ä", 143 => "Å", 146 => "Æ", 128 => "Ç", 212 => "È", 144 => "É", 210 => "Ê", 211 => "Ë", 141 => "Ì", 161 => "Í", 140 => "Î", 139 => "Ï", 209 => "Ð", 165 => "Ñ", 227 => "Ò", 224 => "Ó", 226 => "Ô", 229 => "Õ", 153 => "Ö", 158 => "×", 157 => "Ø", 235 => "Ù", 233 => "Ú", 234 => "Û", 154 => "Ü", 237 => "Ý", 232 => "Þ", 225 => "ß", 133 => "à", 160 => "á", 131 => "â", 198 => "ã", 132 => "ä", 134 => "å", 145 => "æ", 135 => "ç", 138 => "è", 130 => "é", 136 => "ê", 137 => "ë", 141 => "ì", 161 => "í", 140 => "î", 139 => "ï", 208 => "ð", 164 => "ñ", 149 => "ò", 162 => "ó", 147 => "ô", 228 => "õ", 148 => "ö", 246 => "÷", 155 => "ø", 151 => "ù", 163 => "ú", 150 => "û", 129 => "ü", 236 => "ý", 231 => "þ", 152 => "ÿ" ); $uniline = ''; $len = strlen($isoline); for ($i=0; $i < $len; $i++){ $thischar = substr($isoline, $i, 1); $key = ord($thischar); $uniline .= isset($iso2uni[$key]) ? $iso2uni[$key] : $thischar; } return $uniline; } /** * Writes text over the image * * only TTF fonts are supported at the moment * * $x:
* You can also use the following keywords ('left', 'center' or 'middle', 'right').
* Additionally you can specify an offset in pixel with the keywords like this 'left +10'.
* (default = 0) * * $y:
* You can also use the following keywords ('top', 'center' or 'middle', 'bottom').
* Additionally you can specify an offset in pixel with the keywords like this 'bottom -10'.
* (default = 0) * * @param string $text text to be generated. * @param string $font TTF fontfile to be used. (relative paths are ok). * @param integer $size textsize. * @param string $color textcolor in hexformat (e.g. '#FF0000'). * @param string|integer $x horizontal postion in pixel. * @param string|integer $y vertical postion in pixel. * @param integer $angle rotation of the text. */ function addText($text, $font, $size, $color, $x, $y, $angle = 0) { global $HTTP_SERVER_VARS; if (substr($font, 0, 1) == DIRECTORY_SEPARATOR || (substr($font, 1, 1) == ":" && (substr($font, 2, 1) == "\\" || substr($font, 2, 1) == "/"))) { $prepath = ''; } else { $prepath = substr($HTTP_SERVER_VARS['SCRIPT_FILENAME'], 0, strrpos($HTTP_SERVER_VARS['SCRIPT_FILENAME'], DIRECTORY_SEPARATOR)) . DIRECTORY_SEPARATOR; } $text = $this->_iso2uni($text); if (is_string($x) || is_string($y)) { $textsize = imagettfbbox($size, $angle, $prepath.$font, $text); $textwidth = abs($textsize[2]); $textheight = abs($textsize[7]); list($xalign, $xalign_offset) = explode(" ", $x); list($yalign, $yalign_offset) = explode(" ", $y); } if (is_string($x)) { switch ($xalign) { case 'left': $x = 0 + $xalign_offset; break; case 'right': $x = ($this->_img['main']['width'] - $textwidth) + $xalign_offset; break; case 'middle': case 'center': $x = (($this->_img['main']['width'] - $textwidth) / 2) + $xalign_offset; break; } } if (is_string($y)) { switch ($yalign) { case 'top': $y = (0 + $textheight) + $yalign_offset; break; case 'bottom': $y = ($this->_img['main']['height']) + $yalign_offset; break; case 'middle': case 'center': $y = ((($this->_img['main']['height'] - $textheight) / 2) + $textheight) + $yalign_offset; break; } } imagettftext($this->_img['main']['resource'], $size, $angle, $x, $y, $this->_hexToPHPColor($color), $prepath . $font, $text); return true; } } ?>