Re: does this PNG have transparency?

2020-01-27 Thread Phil Davis via use-livecode
I like it! Nice job. Phil On 1/27/20 8:21 AM, Bob Sneidar via use-livecode wrote: Voila! function pngIsTransparent pImageFile if not (there is a file pImageFile) then return "ERROR: Invalid file path!" set the filename of the templateImage to pImageFile put numtochar(0) into

Re: does this PNG have transparency?

2020-01-27 Thread Bob Sneidar via use-livecode
Voila! function pngIsTransparent pImageFile if not (there is a file pImageFile) then return "ERROR: Invalid file path!" set the filename of the templateImage to pImageFile put numtochar(0) into tZero return (tZero is in the alphaData of the templateImage) OR (tZero is in the

Re: does this PNG have transparency?

2020-01-27 Thread Paul Dupuis via use-livecode
You should be able to use 'the templateImage' (see dictionary), and numToChar probably should be numToByte As in: on mouseUp answer file "Pick an image:" if it is empty then exit to top set the filename of the templateImage to it put numToByte(0) into tZero put (tZero is

Re: does this PNG have transparency?

2020-01-27 Thread Bob Sneidar via use-livecode
Phil, Is img "my test" an existing image, or does setting the filename of img "my test" create the image on the fly? I'm trying to turn this into a function that returns true or false. Bob S > On Jan 24, 2020, at 14:35 , Phil Davis via use-livecode > wrote: > > Maybe this? It seems to

Re: does this PNG have transparency?

2020-01-25 Thread J. Landman Gay via use-livecode
I think that's pretty clever. -- Jacqueline Landman Gay | jac...@hyperactivesw.com HyperActive Software | http://www.hyperactivesw.com On January 24, 2020 4:37:20 PM Phil Davis via use-livecode wrote: Maybe this? It seems to work in my simple testing. Am I missing something? on mouseUp

Re: does this PNG have transparency?

2020-01-24 Thread Phil Davis via use-livecode
Maybe this? It seems to work in my simple testing. Am I missing something? on mouseUp     answer file "Pick an image:"     if it is empty then exit to top     set the filename of img "my test" to it     put numtochar(0) into tZero     put (tZero is in the alphaData of img "my test") OR (tZero

does this PNG have transparency?

2020-01-24 Thread Phil Davis via use-livecode
I usually make things harder than they need to be, so I'm asking: Is there a simple way my LC code can determine if a PNG image is completely opaque or not? Thanks - Phil -- Phil Davis 503-307-4363 ___ use-livecode mailing list