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  • §

    Demo Canvas 015

    Phrase entity (make, clone, method, multiline)

  • §

    Run code

    import {
        library as L,
        makeDragZone,
        makePhrase,
        makeRender,
    } from '../source/scrawl.js'
    
    import { reportSpeed, killArtefact } from './utilities.js';
  • §

    Scene setup

    let canvas = L.artefact.mycanvas;
  • §

    Create and clone Phrase entitys

    makePhrase({
        name: 'myphrase_fill',
    
        text: 'Hεljö!',
        font: 'bold 40px Garamond, serif',
    
        startX: '14%',
        startY: '28%',
        handleX: 'center',
        handleY: 'center',
    
        fillStyle: 'green',
        strokeStyle: 'gold',
    
        lineWidth: 2,
        lineJoin: 'round',
        shadowOffsetX: 2,
        shadowOffsetY: 2,
        shadowBlur: 2,
        shadowColor: 'black',
    
        showBoundingBox: true,
        boundingBoxColor: 'red',
    
    }).clone({
        name: 'myphrase_draw',
        startX: '38%',
        method: 'draw',
    
    }).clone({
        name: 'myphrase_drawAndFill',
        startX: '84%',
        method: 'drawAndFill',
    
    }).clone({
        name: 'myphrase_fillAndDraw',
        startX: '62%',
        method: 'fillAndDraw',
        sharedState: true
    
    }).clone({
        name: 'myphrase_drawThenFill',
        startX: '14%',
        startY: '67%',
        method: 'drawThenFill'
    
    }).clone({
        name: 'myphrase_fillThenDraw',
        startX: '38%',
        method: 'fillThenDraw',
    
    }).clone({
        name: 'myphrase_clear',
        startX: '62%',
        method: 'clear'
    
    }).clone({
        name: 'myphrase_multiline',
    
        text: 'Lorem ipsum har varit standard ända sedan 1500-talet, när-en-okänd-boksättare-tog att antal bokstäver och blandade dem för att göra ett provexemplar av en bok.',
    
        width: 120,
        justify: 'center',
    
        size: '12px',
        weight: 'normal',
    
        startX: '84%',
        method: 'fill',
    
        shadowOffsetX: 0,
        shadowOffsetY: 0,
        shadowBlur: 0,
    });
  • §

    Change the fill and stroke styles on one of the phrase entitys, and any entity sharing that phrase’s state

    L.artefact.myphrase_fillAndDraw.set({
        fillStyle: 'blue',
        strokeStyle: 'coral'
    });
  • §

    User interaction

    Create the drag-and-drop zone

    let current = makeDragZone({
    
        zone: canvas,
        endOn: ['up', 'leave'],
        exposeCurrentArtefact: true,
        preventTouchDefaultWhenDragging: true,
    });
  • §

    Scene animation

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

    const report = reportSpeed('#reportmessage', function () {
        const dragging = current();
        return `Currently dragging: ${(typeof dragging !== 'boolean' && dragging) ? dragging.artefact.name : 'nothing'}`;
    });
  • §

    Create the Display cycle animation

    makeRender({
    
        name: 'demo-animation',
        target: canvas,
        afterShow: report,
    });
  • §

    Development and testing

    console.log(L);
    
    console.log('Performing tests ...');
    killArtefact(canvas, 'myphrase_fill', 4000);
    killArtefact(canvas, 'myphrase_fillAndDraw', 5000);
    killArtefact(canvas, 'myphrase_multiline', 6000);