Scroll container's lazy loading is a bit off

[sapierens]

Currently images in scroll containers are lazy loaded based on window bounds. Which means that if a scroll container doesn't take up the whole screen, the image will be lazy loaded as soon as it enters window bounds, instead of the visible portion of scroll container.

Here's an illustrative image of what I mean:

I believe I have a solution to this, but it depends on #238 Rect implementation. So I will prepare a pull request when/if #238 gets merged.

[tjoskar]

Hi @sapierens, are you still up for the task? :)

[sapierens]

I sure am, I'll try to prepare a pull request this week.

[sapierens]

Hey @tjoskar, I've submitted a PR for this - #258. Let me know what you think.

[tjoskar]

Thanks @sapierens!