/**
* Constructor: mxGraphViewHtmlReader
*
* Constructs a new HTML graph view reader.
*/
function mxCodec($document = null)
{
if ($document == null) {
$document = mxUtils::createXmlDocument();
}
$this->document = $document;
}
/**
* Function: main
*
* Creates a graph using the API and converts it into a PNG image.
*/
function main()
{
// Creates graph with model
$model = new mxGraphModel();
$graph = new mxGraph($model);
$parent = $graph->getDefaultParent();
// Adds cells into the model
$model->beginUpdate();
try {
$v1 = $graph->insertVertex($parent, null, "Hello", 20, 20, 80, 30);
$v2 = $graph->insertVertex($parent, null, "World!", 200, 150, 80, 30);
$e1 = $graph->insertEdge($parent, null, "e1", $v1, $v2);
$e1->getGeometry()->points = array(new mxPoint(10, 10));
$v3 = $graph->insertVertex($e1, null, "v3", 0, 0, 40, 40, "shape=ellipse");
$v3->getGeometry()->relative = true;
$v3->getGeometry()->offset = new mxPoint(-20, -20);
$model->add($parent, $e1, 0);
} catch (Exception $e) {
$model->endUpdate();
throw $e;
}
$model->endUpdate();
$doc = mxUtils::createXmlDocument();
$enc = new mxCodec($doc);
$node = $enc->encode($model);
$xml1 = $doc->saveXML($node);
$doc = mxUtils::parseXml($xml1);
$dec = new mxCodec($doc);
$dec->decode($doc->documentElement, $model);
$doc = mxUtils::createXmlDocument();
$enc = new mxCodec($doc);
$node = $enc->encode($model);
$xml2 = $doc->saveXML($node);
if ($xml1 == $xml2) {
echo "Test Passed: " . htmlentities($xml1);
} else {
echo "Test Failed: <br>xml1=" . htmlentities($xml1) . "<br>xml2=" . htmlentities($xml2);
}
}
/**
* Function: parseXml
*
* Returns a new DOM document for the given XML string.
*/
static function parseXml($xml)
{
$doc = mxUtils::createXmlDocument();
$doc->loadXML($xml);
return $doc;
}