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I have a Rails app that I want to capture a screenshot of a webpage when the user enters a url.
Is it possible to do this in Rails (is there any gem that would do this?)
If not, are there any reliable services that generate live screenshots
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On many Android devices, you can capture a screenshot with a key-combination: Simultaneously press-and-hold Power and Volume-down. You can also capture a screenshot with Android Studio as follows: Run your app on a connected device or emulator. If using a connected device, be sure you have enabled USB debugging.
All these commands are controlled by our operating system, and we can't disable or block them in the browser using HTML/CSS/JavaScript. So, we can't prevent users from taking screenshots.
Ø Open the Restricted app where the screenshot will be taken. Ø Select the Settings icon that looks like a toolbox from the floating button on your screen. Ø Select the Screenshot option from the drop-down menu and shut the drop-down menu. Ø A second floating button, a left-hand camera icon, will appear on your screen.
You can use ALT + ENTER from output window of C ++ then you will come out of full screen.
I use IMGKit gem for that: https://github.com/csquared/IMGKit
Related topic: How to respond_to PNG or JPG in Rails and generate image from HTML?
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ScreenCap gem which uses PhantomJS under the hood. Grab whole pages or just specific divs, or even exact x y coordinates.
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