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79 lines
3.2 KiB
79 lines
3.2 KiB
/*
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* Copyright (C) 1998-2019 by Northwoods Software Corporation. All Rights Reserved.
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*/
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import * as go from '../release/go';
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import { DragCreatingTool } from './DragCreatingTool';
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let myDiagram: go.Diagram;
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export function init() {
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if ((window as any).goSamples) (window as any).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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myDiagram =
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$(go.Diagram, 'myDiagramDiv',
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{
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// Define the template for Nodes, just some text inside a colored rectangle
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nodeTemplate:
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$(go.Node, 'Auto',
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{ minSize: new go.Size(60, 20), resizable: true },
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new go.Binding('desiredSize', 'size', go.Size.parse).makeTwoWay(go.Size.stringify),
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new go.Binding('position', 'pos', go.Point.parse).makeTwoWay(go.Point.stringify),
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// temporarily put selected nodes in ForegFround layer
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new go.Binding('layerName', 'isSelected', (s) => s ? 'Foreground' : '').ofObject(),
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$(go.Shape, 'Rectangle',
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new go.Binding('fill', 'color')),
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$(go.TextBlock,
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{ margin: 2 },
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new go.Binding('text', 'color'))),
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'undoManager.isEnabled': true
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});
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myDiagram.add(
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$(go.Part,
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{ layerName: 'Grid', location: new go.Point(0, 0) },
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$(go.TextBlock, 'Mouse-down and then drag in the background\nto add a Node there with the drawn size.',
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{ stroke: 'brown' })
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));
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class CustomDragCreatingTool extends DragCreatingTool {
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insertPart(bounds: go.Rect): go.Part | null { // override DragCreatingTool.insertPart
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if (this.archetypeNodeData === null) return null;
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// use a different color each time
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this.archetypeNodeData.color = go.Brush.randomColor();
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// call the base method to do normal behavior and return its result
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return DragCreatingTool.prototype.insertPart.call(this, bounds);
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}
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}
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// Add an instance of the custom tool defined in DragCreatingTool.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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// Note that if you do not set the DragCreatingTool.delay, the default value will
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// require a wait after the mouse down event. Not waiting will allow the DragSelectingTool
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// and the PanningTool to be able to run instead of the DragCreatingTool, depending on the delay.
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myDiagram.toolManager.mouseMoveTools.insertAt(2,
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$(CustomDragCreatingTool,
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{
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isEnabled: true, // disabled by the checkbox
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delay: 0, // always canStart(), so PanningTool never gets the chance to run
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box: $(go.Part,
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{ layerName: 'Tool' },
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$(go.Shape,
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{ name: 'SHAPE', fill: null, stroke: 'cyan', strokeWidth: 2 })
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),
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archetypeNodeData: { color: 'white' } // initial properties shared by all nodes
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}));
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// Attach to the window for console manipulation
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(window as any).myDiagram = myDiagram;
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}
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export function toolEnabled() {
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const enable = (document.getElementById('ToolEnabled') as any).checked;
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const tool = myDiagram.toolManager.findTool('DragCreating');
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if (tool !== null) tool.isEnabled = enable;
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}
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