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scripts.js
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scripts.js
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"use strict";
const links = document.querySelectorAll('nav a');
links.forEach(link => {
link.addEventListener('click', ev => {
document.querySelectorAll('section.current').forEach(s => s.classList.remove('modal'));
const section = document.querySelector(ev.target.hash);
section.classList.add('modal');
if(ev.target.hash === "#fromCamera") {
navigator.mediaDevices.getUserMedia({video: true}).then((stream) => { player.srcObject = stream; });
section.addEventListener('click', evClick => {
player.srcObject.getVideoTracks().forEach(track => track.stop());
section.classList.remove('modal')
});
} else {
section.addEventListener('click', evClick => {
section.classList.remove('modal')
});
}
})
})
const context = canvas.getContext('2d');
fileInput.addEventListener('change', (e) => doSomethingWithFiles(e.target.files));
function extractFirstValidFile(fileList) {
for(const file of fileList) {
if (file.type.match(/^image\//)) {
return file;
}
}
}
function doSomethingWithFiles(fileList) {
const file = extractFirstValidFile(fileList);
if (file !== null) {
const image = document.createElement('img');
image.src = URL.createObjectURL(file);
image.addEventListener('load', ev => {
canvas.width = ev.path[0].width;
canvas.height = ev.path[0].height;
context.drawImage(image, 0, 0, canvas.width, canvas.height);
image.remove();
})
}
fileInput.value = null;
}
capture.addEventListener('click', () => {
// Draw the video frame to the canvas.
canvas.width = player.videoWidth;
canvas.height = player.videoHeight;
context.drawImage(player, 0, 0, canvas.width, canvas.height);
// Stop all video streams.
player.srcObject.getVideoTracks().forEach(track => track.stop());
});