Bufferd Image

[Cacsjep]

Checklist

• I have searched the issue tracker for open issues that relate to the same feature, before opening a new one.
• This issue only relates to a single feature. I will open new issues for any other features.

Is your feature request related to a problem?

Currently u need raster Image with double Buffering technics to Update Image Pixels, because u dont know when fyne has rendered the Image complety.

Is it possible to construct a solution with the existing API?

No

Describe the solution you'd like to see.

Best would be a Widget called BufferdImage or so, that use an existing Image.Image for rendering, with a method like updatePixels what would be update the image Pixels and calls refresh after that. Internally it should lock and release the Image pix when Rendering is done. So it would be safe to call updatePixels in a gorotine. Then this could be safetly used to display video or a video Stream.