--- /dev/null
+<?php
+/**
+ * The own template engine for loading caching and sending out 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 ImageTemplateEngine extends BaseTemplateEngine implements CompileableTemplate {
+ /**
+ * Main nodes in the XML tree ('image' is ignored)
+ */
+ private $mainNodes = array("base", "type", "resolution", "background-color", "foreground-color", "image-string");
+
+ /**
+ * Sub nodes in the XML tree
+ */
+ private $subNodes = array("name", "string-name", "x", "y", "font-size", "width", "height", "red", "green", "blue", "text");
+
+ /**
+ * Image instance
+ */
+ private $imageInstance = null;
+
+ /**
+ * Current main node
+ */
+ private $currMainNode = "";
+
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+ }
+
+ /**
+ * Creates an instance of the class TemplateEngine and prepares it for usage
+ *
+ * @param $basePath The local base path for all templates
+ * @param $langInstance An instance of LanguageSystem (default)
+ * @param $ioInstance An instance of FileIoHandler (default, middleware!)
+ * @return $tplInstance An instance of TemplateEngine
+ * @throws BasePathIsEmptyException If the provided $basePath is empty
+ * @throws InvalidBasePathStringException If $basePath is no string
+ * @throws BasePathIsNoDirectoryException If $basePath is no
+ * directory or not found
+ * @throws BasePathReadProtectedException If $basePath is
+ * read-protected
+ */
+ public final static function createImageTemplateEngine ($basePath, ManageableLanguage $langInstance, FileIoHandler $ioInstance) {
+ // Get a new instance
+ $tplInstance = new ImageTemplateEngine();
+
+ // Is the base path valid?
+ if (empty($basePath)) {
+ // Base path is empty
+ throw new BasePathIsEmptyException($tplInstance, self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
+ } elseif (!is_string($basePath)) {
+ // Is not a string
+ throw new InvalidBasePathStringException(array($tplInstance, $basePath), self::EXCEPTION_INVALID_STRING);
+ } elseif (!is_dir($basePath)) {
+ // Is not a path
+ throw new BasePathIsNoDirectoryException(array($tplInstance, $basePath), self::EXCEPTION_INVALID_PATH_NAME);
+ } elseif (!is_readable($basePath)) {
+ // Is not readable
+ throw new BasePathReadProtectedException(array($tplInstance, $basePath), self::EXCEPTION_READ_PROTECED_PATH);
+ }
+
+ // Get configuration instance
+ $cfgInstance = FrameworkConfiguration::getInstance();
+
+ // Set the base path
+ $tplInstance->setBasePath($basePath);
+
+ // Set the language and IO instances
+ $tplInstance->setLanguageInstance($langInstance);
+ $tplInstance->setFileIoInstance($ioInstance);
+
+ // Set template extensions
+ $tplInstance->setRawTemplateExtension($cfgInstance->readConfig('raw_template_extension'));
+ $tplInstance->setCodeTemplateExtension($cfgInstance->readConfig('code_template_extension'));
+
+ // Absolute output path for compiled templates
+ $tplInstance->setCompileOutputPath(PATH . $cfgInstance->readConfig('compile_output_path'));
+
+ // Return the prepared instance
+ return $tplInstance;
+ }
+
+ /**
+ * Getter for current main node
+ *
+ * @return $currMainNode Current main node
+ */
+ public final function getCurrMainNode () {
+ return $this->currMainNode;
+ }
+
+ /**
+ * Getter for main node array
+ *
+ * @return $mainNodes Array with valid main node names
+ */
+ public final function getMainNodes () {
+ return $this->mainNodes;
+ }
+
+ /**
+ * Getter for sub node array
+ *
+ * @return $subNodes Array with valid sub node names
+ */
+ public final function getSubNodes () {
+ return $this->subNodes;
+ }
+
+ /**
+ * Handles the start element of an XML resource
+ *
+ * @param $resource XML parser resource (currently ignored)
+ * @param $element The element we shall handle
+ * @param $attributes All attributes
+ * @return void
+ * @throws InvalidXmlNodeException If an unknown/invalid XML node name was found
+ */
+ public function startElement ($resource, $element, array $attributes) {
+ // Initial method name which will never be called...
+ $methodName = 'initImage';
+
+ // Make the element name lower-case
+ $element = strtolower($element);
+
+ // Is the element a main node?
+ //* DEBUG: */ echo "START: >".$element."<<br />\n";
+ if (in_array($element, $this->mainNodes)) {
+ // Okay, main node found!
+ $methodName = 'setImage' . $this->convertToClassName($element);
+ } elseif (in_array($element, $this->subNodes)) {
+ // Sub node found
+ $methodName = 'setImageProperty' . $this->convertToClassName($element);
+ } elseif ($element != 'image') {
+ // Invalid node name found
+ throw new InvalidXmlNodeException(array($this, $element, $attributes), BaseHelper::EXCEPTION_XML_NODE_UNKNOWN);
+ }
+
+ // Call method
+ //* DEBUG: */ echo "call: ".$methodName."<br />\n";
+ call_user_func_array(array($this, $methodName), $attributes);
+ }
+
+ /**
+ * Ends the main or sub node by sending out the gathered data
+ *
+ * @param $resource An XML resource pointer (currently ignored)
+ * @param $nodeName Name of the node we want to finish
+ * @return void
+ * @throws XmlNodeMismatchException If current main node mismatches the closing one
+ */
+ protected function endElement ($resource, $nodeName) {
+ // Make all lower-case
+ $nodeName = strtolower($nodeName);
+
+ // Does this match with current main node?
+ //* DEBUG: */ echo "END: >".$nodeName."<<br />\n";
+ if (($nodeName != $this->getCurrMainNode()) && (in_array($nodeName, $this->getMainNodes()))) {
+ // Did not match!
+ throw new XmlNodeMismatchException (array($this, $nodeName, $this->getCurrMainNode()), BaseHelper::EXCEPTION_XML_NODE_MISMATCH);
+ } elseif (in_array($nodeName, $this->getSubNodes())) {
+ // Silently ignore sub nodes
+ return;
+ }
+
+ // Construct method name
+ $methodName = 'finish' . $this->convertToClassName($nodeName);
+
+ // Call the corresponding method
+ call_user_func_array(array($this->imageInstance, $methodName), array());
+ }
+
+ /**
+ * Currently not used
+ *
+ * @param $resource XML parser resource (currently ignored)
+ * @param $characters Characters to handle
+ * @return void
+ * @todo Find something usefull with this!
+ */
+ protected function characterHandler ($resource, $characters) {
+ // Trim all spaces away
+ $characters = trim($characters);
+
+ // Is this string empty?
+ if (empty($characters)) {
+ // Then skip it silently
+ return false;
+ } // END - if
+
+ // Unfinished work!
+ $this->partialStub("Handling extra characters is not yet supported!");
+ }
+
+ /**
+ * Intializes the image
+ *
+ * @return void
+ * @todo Add cache creation here
+ */
+ private function initImage () {
+ // Unfinished work!
+ }
+
+ /**
+ * Set the image type
+ *
+ * @param $imageType Code fragment or direct value holding the image type
+ * @return void
+ */
+ private function setImageType ($imageType) {
+ // Set group to general
+ $this->setVariableGroup('general');
+
+ // Try to compile it first to get the value from variable stack
+ $imageType = $this->compileRawCode($imageType);
+
+ // Now make a class name of it
+ $className = $this->convertToClassName($imageType.'_image');
+
+ // And try to initiate it
+ $this->imageInstance = ObjectFactory::createObjectByName($className, array($this));
+
+ // Set current main node to type
+ $this->currMainNode = 'type';
+ }
+
+ /**
+ * "Setter" for resolution, we first need to collect the resolution from the
+ * sub-nodes. So first, this method will prepare an array for it
+ *
+ * @return void
+ */
+ private function setImageResolution () {
+ // Call the image class
+ $this->imageInstance->initResolution();
+
+ // Current main node is resolution
+ $this->currMainNode = 'resolution';
+ }
+
+ /**
+ * "Setter" for base information. For more details see above method!
+ *
+ * @return void
+ * @see ImageTemplateEngine::setImageResolution
+ */
+ private function setImageBase () {
+ // Call the image class
+ $this->imageInstance->initBase();
+
+ // Current main node is resolution
+ $this->currMainNode = 'base';
+ }
+
+ /**
+ * "Setter" for background-color. For more details see above method!
+ *
+ * @return void
+ * @see ImageTemplateEngine::setImageResolution
+ */
+ private function setImageBackgroundColor () {
+ // Call the image class
+ $this->imageInstance->initBackgroundColor();
+
+ // Current main node is background-color
+ $this->currMainNode = 'background-color';
+ }
+
+ /**
+ * "Setter" for foreground-color. For more details see above method!
+ *
+ * @return void
+ * @see ImageTemplateEngine::setImageResolution
+ */
+ private function setImageForegroundColor () {
+ // Call the image class
+ $this->imageInstance->initForegroundColor();
+
+ // Current main node is foreground-color
+ $this->currMainNode = 'foreground-color';
+ }
+
+ /**
+ * "Setter" for image-string. For more details see above method!
+ *
+ * @param $groupable Wether this image string is groupable
+ * @return void
+ * @see ImageTemplateEngine::setImageResolution
+ */
+ private function setImageImageString ($groupable = 'single') {
+ // Call the image class
+ $this->imageInstance->initImageString($groupable);
+
+ // Current main node is foreground-color
+ $this->currMainNode = 'image-string';
+ }
+
+ /**
+ * Setter for image name
+ *
+ * @param $imageName Name of the image
+ * @return void
+ */
+ private function setImagePropertyName ($imageName) {
+ // Call the image class
+ $this->imageInstance->setImageName($imageName);
+ }
+
+ /**
+ * Setter for image width
+ *
+ * @param $width Width of the image or variable
+ * @return void
+ */
+ private function setImagePropertyWidth ($width) {
+ // Call the image class
+ $this->imageInstance->setWidth($width);
+ }
+
+ /**
+ * Setter for image height
+ *
+ * @param $height Height of the image or variable
+ * @return void
+ */
+ private function setImagePropertyHeight ($height) {
+ // Call the image class
+ $this->imageInstance->setHeight($height);
+ }
+
+ /**
+ * Setter for image red color
+ *
+ * @param $red Red color value
+ * @return void
+ */
+ private function setImagePropertyRed ($red) {
+ // Call the image class
+ $this->imageInstance->setRed($red);
+ }
+
+ /**
+ * Setter for image green color
+ *
+ * @param $green Green color value
+ * @return void
+ */
+ private function setImagePropertyGreen ($green) {
+ // Call the image class
+ $this->imageInstance->setGreen($green);
+ }
+
+ /**
+ * Setter for image blue color
+ *
+ * @param $blue Blue color value
+ * @return void
+ */
+ private function setImagePropertyBlue ($blue) {
+ // Call the image class
+ $this->imageInstance->setBlue($blue);
+ }
+
+ /**
+ * Setter for string name (identifier)
+ *
+ * @param $stringName String name (identifier)
+ * @return void
+ */
+ private function setImagePropertyStringName ($stringName) {
+ // Call the image class
+ $this->imageInstance->setStringName($stringName);
+ }
+
+ /**
+ * Setter for font size
+ *
+ * @param $fontSize Size of the font
+ * @return void
+ */
+ private function setImagePropertyFontSize ($fontSize) {
+ // Call the image class
+ $this->imageInstance->setFontSize($fontSize);
+ }
+
+ /**
+ * Setter for image string
+ *
+ * @param $imageString Image string to set
+ * @return void
+ */
+ private function setImagePropertyText ($imageString) {
+ // Call the image class
+ $this->imageInstance->setString($imageString);
+ }
+
+ /**
+ * Setter for X coordinate
+ *
+ * @param $x X coordinate
+ * @return void
+ */
+ private function setImagePropertyX ($x) {
+ // Call the image class
+ $this->imageInstance->setX($x);
+ }
+
+ /**
+ * Setter for Y coordinate
+ *
+ * @param $y Y coordinate
+ * @return void
+ */
+ private function setImagePropertyY ($y) {
+ // Call the image class
+ $this->imageInstance->setY($y);
+ }
+
+ /**
+ * Getter for image cache file (FQFN)
+ *
+ * @return $fqfn Full-qualified file name of the image cache
+ */
+ public function getImageCacheFqfn () {
+ // Get the FQFN ready
+ $fqfn = $this->getBasePath().'_cache/' . md5($this->imageInstance->getImageName().":".$this->__toString().":".$this->imageInstance->__toString()) . "." . $this->imageInstance->getImageType();
+
+ // Return it
+ return $fqfn;
+ }
+
+ /**
+ * Outputs the image to the world
+ *
+ * @param $responseInstance An instance of a Responseable class
+ * @return void
+ */
+ public function transferToResponse (Responseable $responseInstance) {
+ // Set the image instance
+ $responseInstance->setImageInstance($this->imageInstance);
+ }
+}
+
+// [EOF]
+?>
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