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83 lines
3.7 KiB
HTML
Executable File
83 lines
3.7 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<title>Drag Zooming Tool</title>
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<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
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<meta name="description" content="TypeScript: Users can zoom into and out of a diagram by drawing a rectangle showing what part of the document should be shown by the new viewport." />
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
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</head>
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<body>
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<div id="sample">
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<div id="myDiagramDiv" style="background-color: white; border: solid 1px black; width: 100%;height: 800px"></div>
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<p>
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This sample demonstrates the DragZoomingTool, which replaces the standard DragSelectingTool. It is defined in its own file, as <a href="DragZoomingTool.ts">DragZoomingTool.ts</a>.
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</p>
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<p>
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Press in the background, wait briefly, and then drag to zoom in to show the area of the drawn rectangle.
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Hold down the Shift key to zoom out.
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The rectangle always has the same aspect ratio as the viewport of the diagram.
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</p>
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</div>
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<script type="module" id="code">
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import * as go from "../release/go-module.js";
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import { DragZoomingTool } from './DragZoomingTool.js';
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if (window.goSamples) window.goSamples(); // init for these samples -- you don't need to call this
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const $ = go.GraphObject.make; // for conciseness in defining templates
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const myDiagram =
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$(go.Diagram, 'myDiagramDiv', {
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initialDocumentSpot: go.Spot.Center,
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initialViewportSpot: go.Spot.Center,
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// Define the template for Nodes, just some text inside a colored rectangle
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nodeTemplate: $(go.Node, 'Spot', { width: 70, height: 20 }, $(go.Shape, 'Rectangle', new go.Binding('fill', 'c')), $(go.TextBlock, { margin: 2 }, new go.Binding('text', 'c'))),
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// Define the template for Links, just a simple line
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linkTemplate: $(go.Link, $(go.Shape, { stroke: 'black' })),
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layout: $(go.TreeLayout, {
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angle: 90,
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nodeSpacing: 4,
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compaction: go.TreeLayout.CompactionNone
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}),
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model: $(go.TreeModel, {
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nodeKeyProperty: 'k',
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nodeParentKeyProperty: 'p'
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})
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});
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// Add an instance of the custom tool defined in DragZoomingTool.js.
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// This needs to be inserted before the standard DragSelectingTool,
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// which is normally the third Tool in the ToolManager.mouseMoveTools list.
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myDiagram.toolManager.mouseMoveTools.insertAt(2, new DragZoomingTool());
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// This is a status message
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const myLoading =
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$(go.Part, { selectable: false, location: new go.Point(0, 0) }, $(go.TextBlock, 'loading...', { stroke: 'red', font: '20pt sans-serif' }));
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// temporarily add the status indicator
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myDiagram.add(myLoading);
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// allow the myLoading indicator to be shown now,
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// but allow objects added in loadTree to also be considered part of the initial Diagram
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myDiagram.delayInitialization(loadTree);
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function loadTree() {
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// create some tree data
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const total = 99;
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const treedata = [];
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for (let i = 0; i < total; i++) {
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// these property names are also specified when creating the TreeModel
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const d = {
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k: i,
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c: go.Brush.randomColor(),
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p: (i > 0 ? Math.floor(Math.random() * i / 2) : undefined) // the random parent's key
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};
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treedata.push(d);
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}
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// give the Diagram's model all the data
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myDiagram.model.nodeDataArray = treedata;
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// remove the status indicator
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myDiagram.remove(myLoading);
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window.myDiagram = myDiagram; // Attach to the window for console debugging
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}
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</script>
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</body>
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</html> |