maxGraph/javascript/examples/showregion.html

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HTML

<!--
$Id: showregion.html,v 1.5 2013/10/28 08:44:54 gaudenz Exp $
Copyright (c) 2006-2013, JGraph Ltd
Showregion example for mxGraph. This example demonstrates using a custom
rubberband handler to show the selected region in a new window.
-->
<html>
<head>
<title>Showregion example for mxGraph</title>
<style type="text/css">
body div.mxPopupMenu {
-webkit-box-shadow: 3px 3px 6px #C0C0C0;
-moz-box-shadow: 3px 3px 6px #C0C0C0;
box-shadow: 3px 3px 6px #C0C0C0;
background: white;
position: absolute;
border: 3px solid #e7e7e7;
padding: 3px;
}
body table.mxPopupMenu {
border-collapse: collapse;
margin: 0px;
}
body tr.mxPopupMenuItem {
color: black;
cursor: default;
}
body td.mxPopupMenuItem {
padding: 6px 60px 6px 30px;
font-family: Arial;
font-size: 10pt;
}
body td.mxPopupMenuIcon {
background-color: white;
padding: 0px;
}
body tr.mxPopupMenuItemHover {
background-color: #eeeeee;
color: black;
}
table.mxPopupMenu hr {
border-top: solid 1px #cccccc;
}
table.mxPopupMenu tr {
font-size: 4pt;
}
</style>
<!-- Sets the basepath for the library if not in same directory -->
<script type="text/javascript">
mxBasePath = '../src';
</script>
<!-- Loads and initializes the library -->
<script type="text/javascript" src="../src/js/mxClient.js"></script>
<!-- Example code -->
<script type="text/javascript">
// Program starts here. Creates a sample graph in the
// DOM node with the specified ID. This function is invoked
// from the onLoad event handler of the document (see below).
function main(container)
{
// Checks if the browser is supported
if (!mxClient.isBrowserSupported())
{
// Displays an error message if the browser is not supported.
mxUtils.error('Browser is not supported!', 200, false);
}
else
{
// Disables built-in context menu
mxEvent.disableContextMenu(document.body);
// Changes some default colors
mxConstants.HANDLE_FILLCOLOR = '#99ccff';
mxConstants.HANDLE_STROKECOLOR = '#0088cf';
mxConstants.VERTEX_SELECTION_COLOR = '#00a8ff';
// Creates the graph inside the given container
var graph = new mxGraph(container);
// Enables rubberband selection
var rubberband = new mxRubberband(graph);
rubberband.isForceRubberbandEvent = function(me)
{
return mxRubberband.prototype.isForceRubberbandEvent.apply(this, arguments) || mxEvent.isPopupTrigger(me.getEvent());
}
// Defines a new popup menu for region selection in the rubberband handler
rubberband.popupMenu = new mxPopupMenu(function(menu, cell, evt)
{
var rect = new mxRectangle(rubberband.x, rubberband.y, rubberband.width, rubberband.height);
menu.addItem('Show this', null, function()
{
rubberband.popupMenu.hideMenu();
var bounds = graph.getGraphBounds();
mxUtils.show(graph, null, bounds.x - rubberband.x, bounds.y - rubberband.y, rubberband.width, rubberband.height);
});
});
var rubberbandMouseDown = rubberband.mouseDown;
rubberband.mouseDown = function(sender, me)
{
this.popupMenu.hideMenu();
rubberbandMouseDown.apply(this, arguments);
};
var rubberbandMouseUp = rubberband.mouseUp;
rubberband.mouseUp = function(sender, me)
{
if (this.div != null && mxEvent.isPopupTrigger(me.getEvent()))
{
if (!graph.popupMenuHandler.isMenuShowing())
{
var origin = mxUtils.getScrollOrigin();
this.popupMenu.popup(me.getX() + origin.x + 1, me.getY() + origin.y + 1, null, me.getEvent());
this.reset();
}
}
else
{
rubberbandMouseUp.apply(this, arguments);
}
};
// Gets the default parent for inserting new cells. This
// is normally the first child of the root (ie. layer 0).
var parent = graph.getDefaultParent();
// Adds cells to the model in a single step
graph.getModel().beginUpdate();
try
{
var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
var e1 = graph.insertEdge(parent, null, '', v1, v2);
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
}
};
</script>
</head>
<!-- Page passes the container for the graph to the program -->
<body onload="main(document.getElementById('graphContainer'))">
<!-- Creates a container for the graph with a grid wallpaper -->
<div id="graphContainer"
style="overflow:hidden;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
</div>
Use the right mouse button to select a region of the diagram and select <i>Show this</i>.
</body>
</html>