CODEWITHSUNDEEP
google-chromeprinting
Hendrik
Hendrik

Reputation: 73

chrome extension development - printerprovider api - printer id save to pdf

im trying to get a extension working which can grab the printed document through an event. I found the printerProvider Api. Afterwards i added the custom printer like that

chrome.printerProvider.onPrintRequested.addListener(function (job, status) {
    console.log(job,status)
});

chrome.printerProvider.onGetPrintersRequested.addListener(
    function ( resultCallback ) {
        resultCallback( [{
            id: '',
            name: 'Custom Printer',
            description: ''
        }] );
    }
);

Im struggling what id i have to fill in that i get the print dialog to work. I found this question which displays a way to add a network printer. (Google JavaScript API - Chrome.printerProvider: Printer id format)

Is there a way to get the PrintJob without actually printing to a specified printer in the id or if not is it possible to print to a pdf and get the PrintJob after saving (Windows 10 adds the "Microsoft Print to PDF Printer. But i dont know its id")?

Upvotes: 0

Views: 786

Answers (1)

Hendrik
Hendrik

Reputation: 73

I have found the answer to my question. To be able to get the pdf content you have to use this code

chrome.printerProvider.onGetPrintersRequested.addListener(
    function ( resultCallback ) {
        resultCallback( [{
            id: 'customprinter',
            name: 'Custom Printer',
            description: ''
        }] );
    }
);

chrome.printerProvider.onGetCapabilityRequested.addListener(function (printerId, resultCallback) {
    console.log(printerId);
    if(printerId == 'customprinter') {
        resultCallback(capabilities);
    }
});

For the capabilities variable you can use the example provided in the documentation https://developers.google.com/cloud-print/docs/cdd#cdd-example

When you set the capabilities a preview will be displayed and you are able to print. In onPrintRequested you will then get the printjob.

Upvotes: 2

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