A problem with xImage and JPG

A problem with xImage and JPG

Postby ukoenig » Mon Apr 26, 2021 2:16 pm

A alphablended JPG with xImage how is that possible :?:
The normal formats using transparent are : GIF, PNG, TIF and BMP

Image

the original JPG

Image

regards
Uwe :?:
Last edited by ukoenig on Tue Apr 27, 2021 5:51 am, edited 2 times in total.
Since 1995 ( the first release of FW 1.9 )
i work with FW.
If you have any questions about special functions, maybe i can help.
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Re: A problem with xImage and JPG

Postby karinha » Mon Apr 26, 2021 4:08 pm

Example, PRG?

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João Santos - São Paulo - Brasil - Phone: +55(11)95150-7341
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Re: A problem with xImage and JPG

Postby ukoenig » Mon Apr 26, 2021 4:23 pm

Nothing extra.
It is the original sample xImage01.prg from the sample-folder
You can test it from there.
For the test I added the image to the imagefolder thats all.
Just see the picture above

regards
Uwe
Since 1995 ( the first release of FW 1.9 )
i work with FW.
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Re: A problem with xImage and JPG

Postby karinha » Mon Apr 26, 2021 4:57 pm

Master, this JPG is damaged. I opened it with IRFANVIEW.EXE and the image is not perfect. Try another one please.

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João Santos - São Paulo - Brasil - Phone: +55(11)95150-7341
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Re: A problem with xImage and JPG

Postby karinha » Mon Apr 26, 2021 5:16 pm

Look,

Image

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Re: A problem with xImage and JPG

Postby ukoenig » Mon Apr 26, 2021 5:46 pm

I*m using a professional sofware PHOTOSHOP and there is no error.

Most of JPG-files don't use solid colors on the border-area.
That is the reason black is shown transparent.
With my new < cellborder-tool > it is possible to test it as well.
The image-selection from the browser is using xImage.

I tested some more JPG*s

the problem belongs to JPG-images with some SOLID colorspaces from the outside
Next I painted a SOLID freehand-border around image Olga1.jpg
A normal JPG without solid colors doesn*t have any problems

Image

Image

Images can be tested here :

Image

Image

regards
Uwe
Last edited by ukoenig on Tue Apr 27, 2021 12:34 pm, edited 1 time in total.
Since 1995 ( the first release of FW 1.9 )
i work with FW.
If you have any questions about special functions, maybe i can help.
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Re: A problem with xImage and JPG

Postby nageswaragunupudi » Tue Apr 27, 2021 6:31 am

Please try chaing oBrw:bChange as
Code: Select all  Expand view  RUN
     :bChange       := { || oImage:lBmpTransparent := !( Lower( cFileExt( oBrw:aRow[ 2 ] ) ) $ "jpg,jpeg" ), ;
                             oImage:Refresh() }
 
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Re: A problem with xImage and JPG

Postby ukoenig » Tue Apr 27, 2021 12:38 pm

Thank You very much
it is working now :D
solid color-areas are rarely inside JPG-files special on the outline area :roll:

Image

regards
Uwe
Since 1995 ( the first release of FW 1.9 )
i work with FW.
If you have any questions about special functions, maybe i can help.
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