/**
* Function: main
*
* Reads a graph view XML file and creates HTML on the fly,
* ie. without creating a graph and model for it.
*/
function main()
{
// Reads the XML representation of a graph_view_! If you need to
// create an image for a graph_model_ then use the following code:
//
// $doc = mxUtils::parseXml($xml);
// $dec = new mxCodec($doc);
// $dec->decode($doc->documentElement, $graph->getModel());
//
// $image = $graph->createImage(null, "#FFFFFF");
$filename = "diagrams/graphview.xml";
//echo mxGraphViewHtmlReader::convertFile($filename);
// Creates a PNG representation of the file
$image = mxGraphViewImageReader::convertFile($filename, "#FFFFFF");
// Creates an interlaced image for better loading in the browser
//imageInterlace($image, 1);
// Marks background color as being transparent
//imageColorTransparent($image, imageColorAllocate($image, 255, 255, 255));
header("Content-Type: image/png");
echo mxUtils::encodeImage($image);
}
$xml = addslashes(htmlentities(str_replace("\n", "
", $xmlNode->ownerDocument->saveXML($xmlNode))));
// Loads the template into a single string
$template = mxUtils::readFile("template.html");
// Replaces the placeholder in the template with the XML data
// which is then parsed into the graph model. Note: In a production
// environment you should use a template engine instead.
$page = str_replace("%graph%", $xml, $template);
// Makes sure there is no caching on the client side
header("Pragma: no-cache");
// HTTP 1.0
header("Cache-control: private, no-cache, no-store");
header("Expires: 0");
echo $page;
}
// Uses a local font so that all examples work on all platforms. This can be
// changed to vera on Mac or arial on Windows systems.
mxConstants::$DEFAULT_FONTFAMILY = "ttf/verah.ttf";
// If you can't get the fonts to render try using one of the following:
//mxConstants::$DEFAULT_FONTFAMILY = "C:\WINDOWS\Fonts\arial.ttf";
//mxConstants::$DEFAULT_FONTFAMILY = "verah"; putenv("GDFONTPATH=".realpath("./ttf"));
//mxConstants::$TTF_ENABLED = false;
// Handles save image request
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$xml = urldecode($_POST["xml"]);
// Creates a PNG representation of the file
$image = mxGraphViewImageReader::convert($xml, "#FFFFFF");
header("Content-Type: image/png");
echo mxUtils::encodeImage($image);
} else {
main();
}
/**
* Function: convertFile
*
* Creates the image for the given display XML file.
*/
static function convertFile($filename, $background = null)
{
$viewReader = new mxGraphViewImageReader($background);
$viewReader->readFile($filename);
$image = $viewReader->canvas->getImage();
return $image;
}
/**
* Class: mxGraphViewHtmlReader
*
* A display XML to HTML converter. This allows to create an image of a graph
* without having to parse and create the graph model using the XML file
* created for the mxGraphView object in the thin client.
*
* Constructor: mxGraphViewHtmlReader
*
* Constructs a new HTML graph view reader.
*/
function mxGraphViewHtmlReader()
{
parent::mxGraphViewImageReader();
}
