zombie-navigator/demo/content-script-screenshot.js

'use strict';

const {openPrivateWindow} = require('zombie/webbrowser');
const {console} = require('zombie/zombie');

console.log('Opening window...');
openPrivateWindow('about:')
.then(w => {
	console.log('doing screenshot...');
	w.screenshot().then(data => {
		w.uri = data;
		console.log('screenshot:', data);
	})
	/*
	w.runScript(function () {
		try {
			let left = 0, top = 0, width, height;
			const curX = window.scrollX, curY = window.scrollY;
			scrollTo(0, 0);
			width = window.innerWidth + window.scrollMaxX - window.scrollMinX;
			height = window.innerHeight + window.scrollMaxY - window.scrollMinY;
			
			const canvas = window.document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
			const ctx = canvas.getContext('2d');
			const ratio = window.devicePixelRatio;
			canvas.width = width * ratio;
			canvas.height = height * ratio;
			ctx.scale(ratio, ratio);
			ctx.drawWindow(window, left, top, width, height, 'transparent');
			
			const dataURI = canvas.toDataURL('image/png', '');
			scrollTo(curX, curY);
			return dataURI;
		} catch (e) {
			console.error(e, e + '');
		}
		//console.log(typeof ctx.drawWindow);
		//alert(typeof ctx.drawWindow);
		//return typeof ctx.drawWindow;
	})
	.then(dataURI => {
		console.log('screenshot:', dataURI);
		w.close();
	})
	*/
	.catch(e => {
		console.log(e, e + '');
	});
});


// vim: ts=4 noet ai