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Comments (5)

techniq avatar techniq commented on September 22, 2024

SVG reproduction when using CSS classes / variables will require some extra processing to fully reproduce visual.

image

from layerchart.

techniq avatar techniq commented on September 22, 2024

Mike Bostock's examples of serialize() and rasterize() for SVG look straight forward (using document.createTreeWalker().

Likely how Download SVG and Download PNG are implemented (or at least the basics).

image

see also: https://talk.observablehq.com/t/svg-to-png/6957

from layerchart.

techniq avatar techniq commented on September 22, 2024

See discussion for approach with SVG

function downloadSVG() {
    const svgEl = document.querySelector('.layercake-layout-svg');
    if (svgEl) {
        svgEl?.setAttribute('xmlns', 'http://www.w3.org/2000/svg');

        svgEl.querySelector('.svg_text')?.classList.remove('hidden');

        const svgString = new XMLSerializer().serializeToString(svgEl);

        const a = document.createElement('a');
        a.href = window.URL.createObjectURL(new Blob([svgString]));
        a.download = 'download.svg';
        a.click();

        a.remove();

        svgEl?.removeAttribute('xmlns');
        svgEl.querySelector('.svg_text')?.classList.add('hidden');
    }
};

from layerchart.

techniq avatar techniq commented on September 22, 2024

See discussion for approach with Canvas

function downloadPNG() {
    const canvas = document.querySelector('.layercake-layout-canvas') as HTMLCanvasElement;
    const ctx = canvas.getContext('2d');
    const dataUrl = ctx?.canvas.toDataURL('image/png', 1);

    const a = document.createElement('a');
    a.href = dataUrl;
    a.download = 'download.png';
    a.click();
    a.remove();
};

from layerchart.

meta-cretin avatar meta-cretin commented on September 22, 2024

save as svg and png looks good to me...

from layerchart.

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