getdisplaymedia screenshot
courtesy of @BobbyTables on GitHub
<canvas id="canvas"></canvas>
// Request media
navigator.mediaDevices.getDisplayMedia().then(stream =>
{
// Grab frame from stream
let track = stream.getVideoTracks()[0];
let capture = new ImageCapture(track);
capture.grabFrame().then(bitmap =>
{
// Stop sharing
track.stop();
// Draw the bitmap to canvas
canvas.width = bitmap.width;
canvas.height = bitmap.height;
canvas.getContext('2d').drawImage(bitmap, 0, 0);
// Grab blob from canvas
canvas.toBlob(blob => {
// Do things with blob here
blob.name = `screenshot-${new Date().getTime()}`;
// copy to clipboard
let data = [new ClipboardItem({ [blob.type]: blob })];
navigator.clipboard.write(data);
console.log('output blob:', blob);
});
});
})
.catch(e => console.log(e));