* @version 0.0.0
* @copyright Copyright (c) 2007 - 2009 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 .
*/
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
$configInstance = FrameworkConfiguration::getInstance();
// Set the base path
$tplInstance->setBasePath($basePath);
// Set the language and IO instances
$tplInstance->setLanguageInstance($langInstance);
$tplInstance->setFileIoInstance($ioInstance);
// Set template extensions
$tplInstance->setRawTemplateExtension($configInstance->readConfig('raw_template_extension'));
$tplInstance->setCodeTemplateExtension($configInstance->readConfig('code_template_extension'));
// Absolute output path for compiled templates
$tplInstance->setCompileOutputPath($configInstance->readConfig('base_path') . $configInstance->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: >".$element."<
\n";
if (in_array($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."
\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: >".$nodeName."<
\n";
if (($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]
?>