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    ./demo/canvas-001.js ./demo/canvas-002.js ./demo/canvas-003.js ./demo/canvas-004.js ./demo/canvas-005.js ./demo/canvas-006.js ./demo/canvas-007.js ./demo/canvas-008.js ./demo/canvas-009.js ./demo/canvas-010.js ./demo/canvas-011.js ./demo/canvas-012.js ./demo/canvas-013.js ./demo/canvas-014.js ./demo/canvas-015.js ./demo/canvas-016.js ./demo/canvas-017.js ./demo/canvas-018.js ./demo/canvas-019.js ./demo/canvas-020.js ./demo/canvas-021.js ./demo/canvas-022.js ./demo/canvas-023.js ./demo/canvas-024.js ./demo/canvas-025.js ./demo/canvas-026.js ./demo/canvas-027.js ./demo/canvas-028.js ./demo/canvas-029.js ./demo/canvas-030.js ./demo/canvas-031.js ./demo/canvas-032.js ./demo/canvas-033.js ./demo/canvas-034.js ./demo/canvas-035.js ./demo/canvas-036.js ./demo/canvas-037.js ./demo/canvas-038.js ./demo/canvas-039.js ./demo/canvas-040.js ./demo/canvas-041.js ./demo/canvas-042.js ./demo/canvas-043.js ./demo/canvas-044.js ./demo/canvas-045.js ./demo/canvas-046.js ./demo/canvas-047.js ./demo/canvas-048.js ./demo/canvas-049.js ./demo/canvas-050.js ./demo/canvas-051.js ./demo/canvas-052.js ./demo/canvas-053.js ./demo/canvas-054.js ./demo/canvas-055.js ./demo/canvas-056.js ./demo/canvas-057.js ./demo/canvas-058.js ./demo/canvas-059.js ./demo/canvas-060.js ./demo/canvas-061.js ./demo/canvas-062.js ./demo/canvas-063.js ./demo/canvas-064.js ./demo/canvas-065.js ./demo/canvas-066.js ./demo/canvas-067.js ./demo/canvas-068.js ./demo/canvas-069.js ./demo/canvas-070.js ./demo/canvas-071.js ./demo/canvas-072.js ./demo/canvas-201.js ./demo/canvas-202.js ./demo/canvas-203.js ./demo/canvas-204.js ./demo/canvas-205.js ./demo/canvas-206.js ./demo/canvas-207.js ./demo/canvas-208.js ./demo/canvas-209.js ./demo/canvas-210.js ./demo/canvas-211.js ./demo/canvas-212.js ./demo/delaunator-001.js ./demo/delaunator-002.js ./demo/dom-001.js ./demo/dom-002.js ./demo/dom-003.js ./demo/dom-004.js ./demo/dom-005.js ./demo/dom-006.js ./demo/dom-007.js ./demo/dom-008.js ./demo/dom-009.js ./demo/dom-010.js ./demo/dom-011.js ./demo/dom-012.js ./demo/dom-013.js ./demo/dom-015.js ./demo/dom-016.js ./demo/dom-017.js ./demo/dom-018.js ./demo/dom-019.js ./demo/dom-020.js ./demo/dom-021.js ./demo/filters-001.js ./demo/filters-002.js ./demo/filters-003.js ./demo/filters-004.js ./demo/filters-005.js ./demo/filters-006.js ./demo/filters-007.js ./demo/filters-008.js ./demo/filters-009.js ./demo/filters-010.js ./demo/filters-011.js ./demo/filters-012.js ./demo/filters-013.js ./demo/filters-014.js ./demo/filters-015.js ./demo/filters-016.js ./demo/filters-017.js ./demo/filters-018.js ./demo/filters-019.js ./demo/filters-020.js ./demo/filters-021.js ./demo/filters-022.js ./demo/filters-023.js ./demo/filters-024.js ./demo/filters-025.js ./demo/filters-026.js ./demo/filters-027.js ./demo/filters-028.js ./demo/filters-029.js ./demo/filters-030.js ./demo/filters-031.js ./demo/filters-032.js ./demo/filters-033.js ./demo/filters-034.js ./demo/filters-035.js ./demo/filters-036.js ./demo/filters-037.js ./demo/filters-101.js ./demo/filters-102.js ./demo/filters-103.js ./demo/filters-104.js ./demo/filters-105.js ./demo/filters-501.js ./demo/filters-502.js ./demo/filters-503.js ./demo/filters-504.js ./demo/filters-505.js ./demo/mediapipe-001.js ./demo/mediapipe-002.js ./demo/mediapipe-003.js ./demo/modules-001.js ./demo/modules-002.js ./demo/modules-003.js ./demo/modules-004.js ./demo/modules-005.js ./demo/modules-006.js ./demo/packets-001.js ./demo/packets-002.js ./demo/particles-001.js ./demo/particles-002.js ./demo/particles-003.js ./demo/particles-004.js ./demo/particles-005.js ./demo/particles-006.js ./demo/particles-007.js ./demo/particles-008.js ./demo/particles-009.js ./demo/particles-010.js ./demo/particles-011.js ./demo/particles-012.js ./demo/particles-013.js ./demo/particles-014.js ./demo/particles-015.js ./demo/particles-016.js ./demo/particles-017.js ./demo/snippets-001.js ./demo/snippets-002.js ./demo/snippets-003.js ./demo/snippets-004.js ./demo/snippets-005.js ./demo/snippets-006.js ./demo/temp-001.js ./demo/temp-shape-scale-investigation.js ./demo/tensorflow-001.js ./demo/tensorflow-002.js ./demo/utilities.js
  • §

    Demo Modules 005

    Accessible GUI-based simple canvas editor

  • §

    Related files:

    • Canvas minimap module
    • Canvas scene editor module
    • DOM entity editor module - which has a related CSS file
    • Entity copy-paste module
    • Entity manipulation GUI module
    • Entity navigation module

    Run code

    import * as scrawl from '../source/scrawl.js';
    
    import { reportSpeed } from './utilities.js';
  • §

    All the functionality required to set up this sort of editor is managed in the canvas-scene-editor.js module

    import { initializeCanvasSceneEditor } from './modules/canvas-scene-editor.js';
  • §

    Scene setup

    const sceneCanvas = scrawl.library.canvas['scene-canvas'];
    
    sceneCanvas.set({
        label: 'A demonstration of a simple design system.',
        description: 'The entitys in this canvas can be positioned, sized, copied and styled using mouse UI and keyboard input.',
    });
  • §

    Create the editor

    const {
    /* eslint-disable-next-line */
        killSceneEditor,
        sceneLayer,
        addControllerAttributes,
        setGuiControlChars,
    
    } = initializeCanvasSceneEditor({
        sceneCanvas,
        domEntityEditor: '#scene-canvas-dahsboard',
        sceneDimensions: 1000,
    }, scrawl);
  • §

    Build initial scene

    const getRandomPosition = () => {
    
        const x = Math.floor(Math.random() * 800) + 100;
        const y = Math.floor(Math.random() * 800) + 100;
    
        return [x, y];
    }
  • §

    Add some entitys that we want to control

    scrawl.makeBlock({
    
        name: 'block-entity-1',
        group: sceneLayer.name,
        start: getRandomPosition(),
        handle: ['center', 'center'],
        dimensions: [100, 50],
        fillStyle: 'blue',
        lineWidth: 3,
        strokeStyle: 'orange',
        method: 'fillThenDraw',
  • §

    The entity’s hover, click and drag-drop functionality

        ...addControllerAttributes,
    
    }).clone({
    
        name: 'block-entity-2',
        start: getRandomPosition(),
    
    }).clone({
    
        name: 'block-entity-3',
        start: getRandomPosition(),
    
    }).clone({
    
        name: 'block-entity-4',
        start: getRandomPosition(),
    });
    
    scrawl.makeWheel({
    
        name: 'wheel-entity-1',
        group: sceneLayer.name,
        start: getRandomPosition(),
        handle: ['center', 'center'],
        radius: 50,
        includeCenter: true,
        fillStyle: 'green',
        lineWidth: 3,
        strokeStyle: 'orange',
        method: 'fillThenDraw',
        ...addControllerAttributes,
    
    }).clone({
    
        name: 'wheel-entity-2',
        start: getRandomPosition(),
    
    }).clone({
    
        name: 'wheel-entity-3',
        start: getRandomPosition(),
    
    }).clone({
    
        name: 'wheel-entity-4',
        start: getRandomPosition(),
    });
    
    scrawl.makePicture({
    
        name: 'picture-entity-1',
        group: sceneLayer.name,
        imageSource: 'img/iris.png',
        dimensions: [150, 150],
        start: getRandomPosition(),
        handle: ['center', 'center'],
        copyDimensions: ['100%', '100%'],
        copyStart: [0, 0],
        lineWidth: 4,
        strokeStyle: 'gold',
        method: 'drawThenFill',
        ...addControllerAttributes,
    
    }).clone({
    
        name: 'picture-entity-2',
        start: getRandomPosition(),
    });
    
    scrawl.makeLabel({
    
        name: 'label-entity-1',
        group: sceneLayer.name,
        text: 'Hello',
        fontString: '40px serif',
        start: getRandomPosition(),
        handle: ['center', 'center'],
        ...addControllerAttributes,
    
    }).clone({
    
        name: 'label-entity-2',
        start: getRandomPosition(),
    
    }).clone({
    
        name: 'label-entity-3',
        start: getRandomPosition(),
    
    }).clone({
    
        name: 'label-entity-4',
        start: getRandomPosition(),
    });
  • §

    User interaction

    Most interaction is handled in the modules; the only thing we need to do here is give users the opportunity to update their keyboard character choices for manipulating the GUI controls

    const button = document.querySelector('#update-keyboard-shortcuts-action');
    
    const buttonClickAction = () => {
    
        const keys = window.prompt('To change the keyboard settings to move, scale and rotate selected entitys, enter the desired characters (11 in total) in the order MOVE-DELTA, MOVE-UP, MOVE-LEFT, MOVE-DOWN, MOVE-RIGHT, SCALE-DELTA, SCALE-GROW, SCALE-SHRINK, ROTATE-DELTA, ROTATE-CLOCKWISE, ROTATE-ANTI-CLOCKWISE (with no spaces or separating commas etc, though the comma key can be used as a shortcut). Character case will be ignored.', 'QWASDBNMGJH');
    
        setGuiControlChars(keys);
    };
    
    /** @ts-expect-error */
    button.onclick = buttonClickAction;
  • §

    Scene animation

    Function to display frames-per-second data, and other information relevant to the demo

    const report = reportSpeed('#reportmessage');
  • §

    Create the Display cycle animation

    scrawl.makeRender({
        name: "demo-animation",
        afterShow: report,
    });
  • §

    Development and testing

    console.log(scrawl.library);