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jussiniinikoski / wasm-pdf

Generate PDF files with JavaScript and WASM (WebAssembly)
Apache License 2.0
479 stars 51 forks source link

Question: printing #1

Open shestero opened 5 years ago

shestero commented 5 years ago

It's very interesting if it is possible to initiate print process after PDF window open. (May be using window.print method). I see no way to print from wasm application, especially from Qt WebAssembly. This looks like a glimpse of solution. Note that Qt can generate PDF itself.

Can you provide some examples how to print PDF?

jussiniinikoski commented 5 years ago

Interesting idea! Perhaps one way would be to introduce printing by opening produced PDF in an iframe..

I think printing goes outside the scope of this project at the moment (which is to build a PDF document).

Jamie0 commented 2 years ago

If anyone is looking for a solution to this that works on recent browsers, try the following snippet in the callback:

const blob = new Blob([data], {
    type: 'application/pdf'
});

let iframe = document.createElement('iframe');
iframe.onload = () => {
    setTimeout(() => {
        iframe.contentWindow.print()
    }, 1);
}

iframe.src = URL.createObjectURL(blob);

iframe.style.position = 'fixed';
iframe.style.top = '-150vh';
iframe.style.left = '-150vw';
iframe.style.width = '100vw';
iframe.style.height = '100vh';

document.body.appendChild(iframe);