I'm having problems with resizing cells and built-in mxGraph layouts. If I put a cell on canvas, and I try to resize it, even for a pixel, it grows huge, something like 50000px x 30000px, so it streches my whole canvas, and of course it is unusable. If I load a graph from an xml file from the database, I can resize cells without any problems.
Similar thing happens with the built in layouts. I'd like to use compact tree layout (the reason I like it beacuse it aligns my whole horizontal). When I draw a graph and try to use that layout, my graph goes wild, also streching to 50000px x 30000 px (example dimensions, but the scroll is so tiny I can barely aim it with the mouse). If I load a graph from xml from a database, compact tree layout works perfect. But as soon as I add another cell in it, and try to use compact tree layout again, it goes wild, again.
I use absolute positioning for div which holds the canvas, as same as on the example here (http://jgraph.github.io/mxgraph/javascript/examples/editors/workfloweditor.html)
This is my css and html :
<head>
<style type="text/css">
#graphContainer {
background: url('../../resources/jgraph/src/images/grid.gif');
left: 20px;
right: 20px;
top: 65px;
bottom: 20px;
position: absolute;
border: 1px solid #F2F2F2;
white-space: nowrap;
font-family: Arial;
font-size: 8pt;
display: block;
}
</style>
</head>
<body>
<div id="graphContainer"></div>
<script>
$(document).ready(function(){
mc.init(document.getElementById('graphContainer'));
});
</script>
</body>
</html>
And this is my javascript for graph initialization (along with the couple of events, beacuse I'm not sure if they are the problem):
mxConnectionHandler.prototype.connectImage = new mxImage('../../resources/jgraph/src/images/connector.gif', 14, 14);
if (!mxClient.isBrowserSupported()) {
mxUtils.error('Browser is not supported!', 200, false);
} else {
var root = new mxCell();
root.insert(new mxCell());
var model = new mxGraphModel(root);
if (mxClient.IS_QUIRKS)
{
document.body.style.overflow = 'hidden';
new mxDivResizer(graphContainer);
}
var editor = new mxEditor();
editor.setGraphContainer(graphContainer);
editor.readGraphModel(model);
var graph = editor.graph;
graph.setConnectable(true);
new mxRubberband(graph);
/* CODE FOR ADDING THE TOOLBAR, excluded from example */
//code for writing out the node name
graph.convertValueToString = function(cell)
{
if (mxUtils.isNode(cell.value))
{
var outValue = cell.value.getAttribute('nodeName');
if (outValue != null && outValue.length > 0)
{
return outValue;
}
return '';
}
return '';
};
//defining on select event
graph.getSelectionModel().addListener(mxEvent.CHANGE, function(sender, evt)
{
events.cellSelectionChanged(graph, graph.getSelectionCell());
});
//triggering the on select event
events.cellSelectionChanged(graph);
//cells added event
graph.addListener(mxEvent.CELLS_ADDED, function(sender, evt) {
var vertex = evt.getProperties().cells[0];
if(vertex.isVertex()){
var decoder = new mxCodec();
var nodeModel = decoder.decode(vertex.value);
if(nodeModel.type=='node' || nodeModel.type=='branch'){
utils.changeCellAttribute(vertex, 'nodeName', 'Node_' + vertex.id);
}else if(nodeModel.type=='start'){
utils.changeCellAttribute(vertex, 'nodeName', 'START');
}else if(nodeModel.type=='end'){
utils.changeCellAttribute(vertex, 'nodeName', 'END');
}else if(nodeModel.type=='form'){
utils.changeCellAttribute(vertex, 'nodeName', 'Form');
}
}
});
//on connect event
graph.connectionHandler.addListener(mxEvent.CONNECT, function(sender, evt){
var model = graph.getModel();
var edge = evt.getProperty('cell');
var source = model.getTerminal(edge, true);
var target = model.getTerminal(edge, false);
});
}
Any thoughts what the problem might be?