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  • §

    Demo Snippets 002

    Scrawl-canvas stack element snippets

    Related files:

    • Stack element snippets - main module

    ‘Green box’ snippet

    Purpose: adds a translucent green box to an element.

    Function input: the DOM element, or a handle to it, as the only argument.

    Function output: a Javascript object will be returned, containing the following attributes

    {
        element     // the Scrawl-canvas wrapper for the DOM element supplied to the function
        canvas      // the Scrawl-canvas wrapper for the snippet's canvas
        animation   // the Scrawl-canvas animation object
        demolish    // remove the snippet from the Scrawl-canvas library
    }
    

    Usage example:

    import greenBox from './relative/or/absolute/path/to/this/file.js';
    
    let myElements = document.querySelectorAll('.some-class');
    
    myElements.forEach(el => greenBox(scrawl, el));
    
  • §

    Effects on the element:

    • Adds a green box to the background display
    export default function (scrawl, el) {
    
        const snippet = scrawl.makeSnippet({
            domElement: el,
        });
    
        if (snippet) {
    
            scrawl.makeBlock({
    
                name: `${snippet.element.name}-box`,
                group: snippet.canvas.base.name,
                width: '50%',
                height: '50%',
                startX: '25%',
                startY: '25%',
                globalAlpha: 0.3,
                strokeStyle: 'lightgreen',
                lineWidth: 40,
                method: 'draw',
            });
        }
        return snippet;
    }