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139 lines
6.6 KiB
HTML
Executable File
139 lines
6.6 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<title>Drawing Commands</title>
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<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
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<meta name="description" content="TypeScript: The DrawCommandHandler extension implements various commands for aligning and rotating objects and for handling arrow keys to select or shift." />
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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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<!-- The DIV for the Diagram needs an explicit size or else we won't see anything.
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Also add a border to help see the edges. -->
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<div id="myDiagramDiv" style="border: solid 1px black; width:400px; height:400px"></div>
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<p>
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Align:
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<button id="leftsides">Left Sides</button>
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<button id="rightsides">Right Sides</button>
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<button id="tops">Tops</button>
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<button id="bottoms">Bottoms</button>
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<button id="cenX">Center X</button>
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<button id="cenY">Center Y</button>
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<button id="row">Row</button>
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<button id="column">Column</button>
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</br>
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Rotate:
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<button id="45">45°</button>
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<button id="-45">-45°</button>
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<button id="90">90°</button>
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<button id="-90">-90°</button>
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<button id="180">180°</button>
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</br>
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Z-Order:
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<button id="front">Pull to Front</button>
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<button id="back">Push to Back</button>
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</br>
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Arrow Mode:
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<input type="radio" name="arrow" id="move" checked="checked">Move</input>
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<input type="radio" name="arrow" id="select">Select</input>
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<input type="radio" name="arrow" id="scroll">Scroll</input>
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</p>
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<p>
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This example demonstrates a custom <a>CommandHandler</a>.
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It allows the user to position selected Parts in a diagram relative to each other,
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overrides <a>CommandHandler.doKeyDown</a> to allow handling the arrow keys in additional manners,
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and uses a "paste offset" so that pasting objects will cascade them rather than place them on top of one another.
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It is defined in its own file, as <a href="DrawCommandHandler.ts">DrawCommandHandler.ts</a>.
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</p>
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<p>
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The above buttons can be used to align Parts, rotate Parts, or change the behavior of the arrow keys.
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</p>
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<p>
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Usage can also be seen in the <a href="../projects/bpmn/BPMN.html">BPMN Editor</a> sample.
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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 { DrawCommandHandler } from './DrawCommandHandler.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 = $(go.Diagram, 'myDiagramDiv', // create a Diagram for the DIV HTML element
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{
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commandHandler: new DrawCommandHandler(),
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"commandHandler.archetypeGroupData": { isGroup: true },
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'undoManager.isEnabled': true // enable undo & redo
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});
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// define a simple Node template
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myDiagram.nodeTemplate =
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$(go.Node, 'Auto', // the Shape will go around the TextBlock
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{ locationSpot: go.Spot.Center }, $(go.Shape, 'RoundedRectangle', { strokeWidth: 0 },
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// Shape.fill is bound to Node.data.color
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new go.Binding('fill', 'color')), $(go.TextBlock, { margin: 8 }, // some room around the text
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// TextBlock.text is bound to Node.data.key
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new go.Binding('text', 'key')));
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// but use the default Link template, by not setting Diagram.linkTemplate
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// create the model data that will be represented by Nodes and Links
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myDiagram.model = new go.GraphLinksModel([
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{ key: 'Alpha', color: 'lightblue' },
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{ key: 'Beta', color: 'orange' },
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{ key: 'Gamma', color: 'lightgreen' },
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{ key: 'Delta', color: 'pink' }
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], [
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{ from: 'Alpha', to: 'Beta' },
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{ from: 'Alpha', to: 'Gamma' },
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{ from: 'Beta', to: 'Beta' },
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{ from: 'Gamma', to: 'Delta' },
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{ from: 'Delta', to: 'Alpha' }
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]);
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window.myDiagram = myDiagram; // Attach to the window for console debugging
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function askSpace() {
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const space = parseInt(prompt('Desired space between nodes (in pixels):') || '0');
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return space;
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}
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// update arrowkey function
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function arrowMode() {
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// no transaction needed, because we are modifying the CommandHandler for future use
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const move = document.getElementById('move');
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const select = document.getElementById('select');
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const scroll = document.getElementById('scroll');
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if (move.checked === true) {
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myDiagram.commandHandler.arrowKeyBehavior = 'move';
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}
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else if (select.checked === true) {
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myDiagram.commandHandler.arrowKeyBehavior = 'select';
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}
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else if (scroll.checked === true) {
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myDiagram.commandHandler.arrowKeyBehavior = 'scroll';
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}
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}
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document.getElementById("leftsides").onclick = function () { myDiagram.commandHandler.alignLeft(); }
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document.getElementById("rightsides").onclick = function () { myDiagram.commandHandler.alignRight(); }
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document.getElementById("tops").onclick = function () { myDiagram.commandHandler.alignTop(); }
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document.getElementById("bottoms").onclick = function () { myDiagram.commandHandler.alignBottom(); }
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document.getElementById("cenX").onclick = function () { myDiagram.commandHandler.alignCenterX(); }
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document.getElementById("cenY").onclick = function () { myDiagram.commandHandler.alignCenterY(); }
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document.getElementById("row").onclick = function () { myDiagram.commandHandler.alignRow(askSpace()); }
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document.getElementById("column").onclick = function () { myDiagram.commandHandler.alignColumn(askSpace()); }
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document.getElementById("45").onclick = function () { myDiagram.commandHandler.rotate(45); }
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document.getElementById("-45").onclick = function () { myDiagram.commandHandler.rotate(-45); }
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document.getElementById("90").onclick = function () { myDiagram.commandHandler.rotate(90); }
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document.getElementById("-90").onclick = function () { myDiagram.commandHandler.rotate(-90); }
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document.getElementById("180").onclick = function () { myDiagram.commandHandler.rotate(180); }
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document.getElementById("front").onclick = function () { myDiagram.commandHandler.pullToFront(); }
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document.getElementById("back").onclick = function () { myDiagram.commandHandler.pushToBack(); }
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document.getElementById("move").onclick = arrowMode;
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document.getElementById("select").onclick = arrowMode;
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document.getElementById("scroll").onclick = arrowMode;
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</script>
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</body>
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</html> |