July 2017
Intermediate to advanced
300 pages
5h 43m
English
book
Cross-platform Desktop Application Development: Electron, Node, NW.js, and React
by Dmitry Sheiko
Content preview from Cross-platform Desktop Application Development: Electron, Node, NW.js, and React
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Taking a screenshot
The previously created static prototype may look fancy, but is not of much use. We need a service capable of taking screenshots and recording screencasts.
If it was about a screenshot of the application window, we would simply use the API on NW.js:
import * as fs from "fs"; function takeScreenshot( filePath ){ appWindow.capturePage(( img ) => { fs.writeFileSync( filePath, img, "base64" ); }, { format : "png", datatype : "raw" }); }
But we need a screenshot of the screen and, therefore, we have to get access to display input. W3C includes a specification draft, "Media Capture and Streams" (http://bit.ly/2qTtLXX), which describes an API to capture displayed media (mediaDevices.getDisplayMedia). Unfortunately, at ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.