--- /dev/null
+<?php
+/**
+ * A helper for creating images
+ *
+ * @author Roland Haeder <webmaster@ship-simu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, this is free software
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.ship-simu.org
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+class ImageHelper extends BaseCaptcha implements HelpableTemplate {
+ /**
+ * The image type
+ */
+ private $imageType = "png";
+
+ /**
+ * The image name
+ */
+ private $imageName = "";
+
+ /**
+ * Width of the image in pixel
+ */
+ private $width = 0;
+
+ /**
+ * Height of the image in pixel
+ */
+ private $height = 0;
+
+ /**
+ * Array for background color values
+ */
+ private $backgroundColor = array(
+ 'red' => 0,
+ 'green' => 0,
+ 'blue' => 0
+ );
+
+ /**
+ * Array for foreground color values
+ */
+ private $foregroundColor = array(
+ 'red' => 0,
+ 'green' => 0,
+ 'blue' => 0
+ );
+
+ /**
+ * All image strings
+ */
+ private $imageStrings = array();
+
+ /**
+ * Current string name
+ */
+ private $currString = "";
+
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+ }
+
+ /**
+ * Creates the helper class
+ *
+ * @param $templateInstance An instance of a template engine
+ * @param $imageType Type of the image
+ * @return $helperInstance A preparedf instance of this helper
+ */
+ public final static function createImageHelper (CompileableTemplate $templateInstance, $imageType) {
+ // Get new instance
+ $helperInstance = new ImageHelper();
+
+ // Set template instance
+ $helperInstance->setTemplateInstance($templateInstance);
+
+ // Set image type (blindly)
+ $helperInstance->setImageType($imageType);
+
+ // Initialize RNG
+ $helperInstance->initializeRandomNumberGenerator($templateInstance);
+
+ // Return the prepared instance
+ return $helperInstance;
+ }
+
+ /**
+ * Setter for image type
+ *
+ * @param $imageType Type of the image
+ * @return void
+ */
+ protected final function setImageType ($imageType) {
+ $this->imageType = (string) $imageType;
+ }
+
+ /**
+ * Getter for image name
+ *
+ * @return $imageType Type of the image
+ */
+ public final function getImageType () {
+ return $this->imageType;
+ }
+
+ /**
+ * Setter for base image
+ *
+ * @param $baseImage A base image template
+ * @return void
+ */
+ public final function setBaseImage ($baseImage) {
+ $this->baseImage = (string) $baseImage;
+ }
+
+ /**
+ * Getter for base image
+ *
+ * @return $baseImage A base image template
+ */
+ public final function getBaseImage () {
+ return $this->baseImage;
+ }
+
+ /**
+ * Setter for image name
+ *
+ * @param $imageName Name of the image
+ * @return void
+ */
+ public final function setImageName ($imageName) {
+ $this->imageName = (string) $imageName;
+ }
+
+ /**
+ * Getter for image name
+ *
+ * @return $imageName Name of the image
+ */
+ protected final function getImageName () {
+ return $this->imageName;
+ }
+
+ /**
+ * Setter for image width
+ *
+ * @param $width Width of the image
+ * @return void
+ */
+ public final function setWidth ($width) {
+ $this->width = (int) $width;
+ }
+
+ /**
+ * Getter for image width
+ *
+ * @return $width Width of the image
+ */
+ public final function getWidth () {
+ return $this->width;
+ }
+
+ /**
+ * Setter for image height
+ *
+ * @param $height Height of the image
+ * @return void
+ */
+ public final function setHeight ($height) {
+ $this->height = (int) $height;
+ }
+
+ /**
+ * Getter for image height
+ *
+ * @return $height Height of the image
+ */
+ public final function getHeight () {
+ return $this->height;
+ }
+
+ /**
+ * Setter for RGB of background color
+ *
+ * @param $red Color value for red
+ * @param $green Color value for green
+ * @param $blue Color value for blue
+ * @return void
+ */
+ public final function setBackgroundColorRedGreenBlue ($red, $green, $blue) {
+ // Random numbers?
+ if ($red === "rand") {
+ $red = $this->getRngInstance()->randomNumber(0, 255);
+ } // END - if
+ if ($green === "rand") {
+ $green = $this->getRngInstance()->randomNumber(0, 255);
+ } // END - if
+ if ($blue === "rand") {
+ $blue = $this->getRngInstance()->randomNumber(0, 255);
+ } // END - if
+
+ $this->backgroundColor['red'] = (int) $red;
+ $this->backgroundColor['green'] = (int) $green;
+ $this->backgroundColor['blue'] = (int) $blue;
+ }
+
+ /**
+ * Setter for RGB of foreground color
+ *
+ * @param $red Color value for red
+ * @param $green Color value for green
+ * @param $blue Color value for blue
+ * @return void
+ */
+ public final function setForegroundColorRedGreenBlue ($red, $green, $blue) {
+ // Random numbers?
+ if ($red === "rand") {
+ $red = $this->getRngInstance()->randomNumber(0, 255);
+ } // END - if
+ if ($green === "rand") {
+ $green = $this->getRngInstance()->randomNumber(0, 255);
+ } // END - if
+ if ($blue === "rand") {
+ $blue = $this->getRngInstance()->randomNumber(0, 255);
+ } // END - if
+
+ $this->foregroundColor['red'] = (int) $red;
+ $this->foregroundColor['green'] = (int) $green;
+ $this->foregroundColor['blue'] = (int) $blue;
+ }
+
+ /**
+ * Adds an image string to the buffer by the given string name
+ *
+ * @param $stringName String name (identifier)
+ */
+ public function addTextLine ($stringName) {
+ // Create the image string
+ $this->imageStrings[$stringName] = array(
+ 'x' => "",
+ 'y' => "",
+ 'size' => "",
+ 'string' => ""
+ );
+
+ // Set current string name
+ $this->currString = $stringName;
+ }
+
+ /**
+ * Setter for image message string
+ *
+ * @param $imageString A message to display in the image
+ * @return void
+ */
+ public final function setImageString ($imageString) {
+ $this->imageStrings[$this->currString]['string'] = (string) $imageString;
+ }
+
+ /**
+ * Getter for image message string
+ *
+ * @return $imageString A message to display in the image
+ */
+ public final function getImageString () {
+ return $this->imageStrings[$this->currString]['string'];
+ }
+
+ /**
+ * Setter for X/Y coordinates for strings
+ *
+ * @param $x X coordinate
+ * @param $y Y coordinate
+ * @return void
+ */
+ public final function setCoord ($x, $y) {
+ $this->imageStrings[$this->currString]['x'] = (int) $x;
+ $this->imageStrings[$this->currString]['y'] = (int) $y;
+ }
+
+ /**
+ * Getter for X coordinate
+ *
+ * @return $x X coordinate
+ */
+ public final function getX () {
+ return $this->imageStrings[$this->currString]['x'];
+ }
+
+ /**
+ * Getter for Y coordinate
+ *
+ * @return $y Y coordinate
+ */
+ public final function getY () {
+ return $this->imageStrings[$this->currString]['y'];
+ }
+
+ /**
+ * Setter for font size
+ *
+ * @param $fontSize Font size for strings
+ * @return void
+ */
+ public final function setFontSize ($fontSize) {
+ // Random font size?
+ if ($fontSize === "rand") {
+ $fontSize = $this->getRngInstance()->randomNumber(4, 9);
+ } // END - if
+
+ $this->imageStrings[$this->currString]['size'] = (int) $fontSize;
+ }
+
+ /**
+ * Getter for font size
+ *
+ * @return $fontSize Font size for strings
+ */
+ public final function getFontSize () {
+ return $this->imageStrings[$this->currString]['size'];
+ }
+
+ /**
+ * Flushs the content out
+ *
+ * @return void
+ */
+ public function flushContent () {
+ // Get a template instance
+ $templateInstance = $this->getTemplateInstance();
+
+ // Get the base image
+ $templateInstance->loadCodeTemplate($this->getBaseImage());
+
+ // Assign all the image values with the template
+ $templateInstance->assignVariable('image_name' , $this->getImageName());
+ $templateInstance->assignVariable('image_type' , $this->getImageType());
+ $templateInstance->assignVariable('image_width' , $this->getWidth());
+ $templateInstance->assignVariable('image_height' , $this->getHeight());
+ $templateInstance->assignVariable('image_bg_red' , $this->backgroundColor['red']);
+ $templateInstance->assignVariable('image_bg_green', $this->backgroundColor['green']);
+ $templateInstance->assignVariable('image_bg_blue' , $this->backgroundColor['blue']);
+ $templateInstance->assignVariable('image_fg_red' , $this->foregroundColor['red']);
+ $templateInstance->assignVariable('image_fg_green', $this->foregroundColor['green']);
+ $templateInstance->assignVariable('image_fg_blue' , $this->foregroundColor['blue']);
+
+ // Add all strings
+ foreach ($this->imageStrings as $id => $imageString) {
+ // Set current string id to keep this helper in sync with template engine
+ $this->currString = $id;
+
+ // Set variable group
+ $templateInstance->setVariableGroup($id);
+
+ // Add group variables
+ $templateInstance->addGroupVariable('image_x' , $this->getX());
+ $templateInstance->addGroupVariable('image_y' , $this->getY());
+ $templateInstance->addGroupVariable('image_size' , $this->getFontSize());
+ $templateInstance->addGroupVariable('image_string', $this->getImageString());
+ } // END - foreach
+
+ // Get the raw content
+ $imageContent = $templateInstance->getRawTemplateData();
+
+ // Transfer all to the template engine
+ $templateInstance->renderXmlContent($imageContent);
+ }
+}
+
+// [EOF]
+?>