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This adds an API for taking screenshots of the current tab manually and when certain actions are trracked.
The
ScreenshotStream
interface defines an API for capturing screenshots. Screenshots are taken via theMediaDevices
API, specifically thegetDisplayMedia()
function. After starting a stream of frames from the browser, individual shots can be saved at any point, either manually or when triggering actions fire.The
Registry
API has been updated to add 2 fields:triggersScreenshot
, which defines whether an action should fire a screenshot, andtransitionTime
, which defines how long it takes for an action to be reflected in the visualization and therefore the delay before screenshotting.The
Trrack
object has been updated with a new field,screenshots
, an instance ofScreenshotStream
. This exposes methods for starting capture (necessary to obtain a stream of frames from the browser), which asks the user for permission to share the current tab. There are also methods to capture a screenshot immediately, capture after a delay, stop theMediaStream
that provides frames from the screenshare, and get saved screenshots. The current implementation of ScreenshotStream saves all captured screenshots to an array. The Trrack object does not take screenshots due to actions withtriggersScreenshot = true
until the ScreenshotStream has been started.