140 lines
5.3 KiB
HTML
140 lines
5.3 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<title>Scroll Modes GoJS Sample</title>
|
|
<meta name="description" content="Infinite scrolling and custom limits on Diagram position and scale." />
|
|
<!-- Copyright 1998-2017 by Northwoods Software Corporation. -->
|
|
<meta charset="UTF-8">
|
|
<script src="../release/go.js"></script>
|
|
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
|
|
<script id="code">
|
|
function init() {
|
|
if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
|
|
var $ = go.GraphObject.make; // for conciseness in defining templates
|
|
|
|
myDiagram = $(go.Diagram, "myDiagramDiv", // create a Diagram for the DIV HTML element
|
|
{
|
|
minScale: 0.25, // so that the contents and the grid cannot appear too small
|
|
grid: $(go.Panel, "Grid",
|
|
$(go.Shape, "LineH", { stroke: "gray", strokeWidth: .5 }),
|
|
$(go.Shape, "LineH", { stroke: "darkslategray", strokeWidth: 1.5, interval: 10 }),
|
|
$(go.Shape, "LineV", { stroke: "gray", strokeWidth: .5 }),
|
|
$(go.Shape, "LineV", { stroke: "darkslategray", strokeWidth: 1.5, interval: 10 })
|
|
),
|
|
"draggingTool.isGridSnapEnabled": true,
|
|
initialContentAlignment: go.Spot.Center, // center the content
|
|
"undoManager.isEnabled": true // enable undo & redo
|
|
});
|
|
|
|
myDiagram.nodeTemplate =
|
|
$(go.Node, "Auto", // the Shape will go around the TextBlock
|
|
$(go.Shape, "RoundedRectangle", { strokeWidth: 0},
|
|
// Shape.fill is bound to Node.data.color
|
|
new go.Binding("fill", "color")),
|
|
$(go.TextBlock,
|
|
{ margin: 8 }, // some room around the text
|
|
// TextBlock.text is bound to Node.data.key
|
|
new go.Binding("text", "key"))
|
|
);
|
|
|
|
// create the model data that will be represented by Nodes and Links
|
|
myDiagram.model = new go.GraphLinksModel(
|
|
[
|
|
{ key: "Alpha", color: "lightblue" },
|
|
{ key: "Beta", color: "orange" },
|
|
{ key: "Gamma", color: "lightgreen" },
|
|
{ key: "Delta", color: "pink" }
|
|
],
|
|
[
|
|
{ from: "Alpha", to: "Beta" },
|
|
{ from: "Alpha", to: "Gamma" },
|
|
{ from: "Beta", to: "Beta" },
|
|
{ from: "Gamma", to: "Delta" },
|
|
{ from: "Delta", to: "Alpha" }
|
|
]);
|
|
|
|
function positionfunc(diagram, pos) {
|
|
var size = diagram.grid.gridCellSize;
|
|
return new go.Point(
|
|
Math.round(pos.x / size.width) * size.width,
|
|
Math.round(pos.y / size.height) * size.height);
|
|
}
|
|
|
|
function scalefunc(diagram, scale) {
|
|
var oldscale = diagram.scale;
|
|
if (scale > oldscale) {
|
|
return oldscale + 0.25;
|
|
} else if (scale < oldscale) {
|
|
return oldscale - 0.25;
|
|
}
|
|
return oldscale;
|
|
}
|
|
|
|
var infscroll = document.getElementById('infscroll');
|
|
infscroll.addEventListener('change', function(e) {
|
|
myDiagram.startTransaction('change scroll mode');
|
|
myDiagram.scrollMode = infscroll.checked ? go.Diagram.InfiniteScroll : go.Diagram.DocumentScroll;
|
|
myDiagram.commitTransaction('change scroll mode');
|
|
});
|
|
|
|
var poscomp = document.getElementById('poscomp');
|
|
poscomp.addEventListener('change', function(e) {
|
|
myDiagram.startTransaction('change position computation');
|
|
myDiagram.positionComputation = poscomp.checked ? positionfunc : null;
|
|
myDiagram.commitTransaction('change position computation');
|
|
});
|
|
|
|
var scalecomp = document.getElementById('scalecomp');
|
|
scalecomp.addEventListener('change', function(e) {
|
|
myDiagram.startTransaction('change scale computation');
|
|
myDiagram.scaleComputation = scalecomp.checked ? scalefunc : null;
|
|
myDiagram.commitTransaction('change scale computation');
|
|
});
|
|
|
|
}
|
|
</script>
|
|
</head>
|
|
<body onload="init()">
|
|
<div id="sample">
|
|
|
|
<div id="myDiagramDiv" style="border: solid 1px black; width:400px; height:400px"></div>
|
|
<p>
|
|
<label><input id="infscroll" type="checkbox" />Enable Infinite Scrolling, setting <a>Diagram.scrollMode</a></label>
|
|
<pre data-language="javascript"><code>
|
|
myDiagram.scrollMode = checked ? go.Diagram.InfiniteScroll : go.Diagram.DocumentScroll;
|
|
</code></pre>
|
|
</p>
|
|
|
|
<p>
|
|
<label><input id="poscomp" type="checkbox" />Enable <a>Diagram.positionComputation</a> function</label>
|
|
<pre data-language="javascript"><code>
|
|
function positionfunc(diagram, pos) {
|
|
var size = diagram.grid.gridCellSize;
|
|
return new go.Point(
|
|
Math.round(pos.x / size.width) * size.width,
|
|
Math.round(pos.y / size.height) * size.height);
|
|
}
|
|
</code></pre>
|
|
</p>
|
|
|
|
<p>
|
|
<label><input id="scalecomp" type="checkbox" />Enable <a>Diagram.scaleComputation</a> function</label>
|
|
<pre data-language="javascript"><code>
|
|
function scalefunc(diagram, scale) {
|
|
var oldscale = diagram.scale;
|
|
if (scale > oldscale) {
|
|
return oldscale + 0.25;
|
|
} else if (scale < oldscale) {
|
|
return oldscale - 0.25;
|
|
}
|
|
return oldscale;
|
|
}
|
|
</code></pre>
|
|
</p>
|
|
|
|
<p>This demonstrates new scrolling and scaling options available in <strong>GoJS 1.5</strong>.</p>
|
|
|
|
</div>
|
|
</body>
|
|
</html> |