Implement a Screen1 AutoscaleImages property

[ewpatton]

Describe the desired feature

Due to possible resource limitations of the device, App Inventor has always scaled images down. This is done by computing a scaling factor in MediaUtil. As devices have increased the amount of RAM available to apps, it seems reasonable to allow people to disable this "feature" in order to use high resolution images in their apps. I propose that we add a AutoscaleImages property to Screen1, defaulting to true for compatibility reasons, that developers can use to turn off scaling of images to take advantage of higher resolution displays.

Give an example of how this feature would be used

Anyone showing camera images, etc. could use this to show the full resolution image rather than a scaled version.

Why doesn't the current App Inventor system address this use case?

App Inventor gives no option to control this behavior, but people expect that if they provide a high res image it will show accordingly. Instead, it is scaled down and may become "fuzzy".

Why is this feature beneficial to App Inventor's educational mission?

While there isn't a direct benefit, students may appreciate having the ability to show higher quality images and not have their apps look "scaled down" compared to other apps.

[jsuyash1514]

@ewpatton I would like to work on this issue.

[ewpatton]

Great. Let us know if you have any questions.

…

Sent from my iPhone

On Feb 5, 2020, at 05:17, Suyash Jain ***@***.***> wrote: @ewpatton I would like to work on this issue. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.

[jsuyash1514]

@ewpatton I've added the required property to the form component.
Here's the link to my changes - link
But, during runtime, I'm getting the following error whenever I try to disable the autoscale feature.

Can you please help me out?

Thank you in advance.

[ewpatton]

@jsuyash1514 After you've compiled the system, make sure to install the companion from build/buildserver/ onto your device, otherwise you won't have the new functionality.

[AMamdo7]

Hi all,
i 'm having an issue as i upload a FHD (1080x1920) images to be (Screen BackgroundImage) for a multiple screen app in app inventor but their quality get lowered automatically ,whether the sizing was Fixed or Responsive .is there a way or even a work around to get the original quality of the background?
note:
tested on AppInventor release nb186