exportSnapshot quality?

[James Little]

Hey gang,

I've been working on a new version of SmoothieRx and the big thing for this new version is to up the quality of icons for Retina displays. One of the core features is to share a screenshot, but when I exportSnapshot it turns out super pixelated. I have tried multiple iterations on multiple platforms (Livecode 6.52 & 6.6), but it's still pixelated.

I think this is a feature request, but I just wanted to run it by you guys to see if there was anything I was missing.

Cheers,

Todd

[Klaus]

Hi Todd,

I have been using export snapshot in my last iPad app (NON retina) and do not see any problems?!
Could you post your "snapshot" script?


Best

Klaus

[James Little]

Hi Klaus,

Code: Select all

 
on mouseDown
   put specialFolderPath("Documents") into tFolder
   export snapshot from this card to file (tFolder&"/recipegraph.png") as PNG
   if char 1 of the systemVersion >= 6 then
      mergPopActivity "#SmoothieRx",(tFolder&"/recipegraph.png"),"http://www.appstore.com/smoothierx"
   else
      if mergTweetCanSend() then
         mergTweet "#SmoothieRx","http://www.appstore.com/smoothierx",(tFolder&"/recipegraph.png")
      end if
   end if
end mouseDown

I double-checked this morning to see if mergPopActivity was compressing the image. It doesn't look like that's the case. The file on the iPhone's disk turns out to be 39 kbs. That's super small! It should be around 256 kbs at least.

[James Little]

Just wanted to post a follow-up. My problem was with the new syntax: "at size" and then multiplying the width and height by the pixelScale.
There really should be better documentation for this with an example of where to put "at size."

Code: Select all

   export snapshot from this card at size (tWidth*tPixelScale, tHeight*tPixelScale) to file (tFolder&"/test.png") as PNG 

Hope this helps those who are similarly challenged.

Cheers,

Todd