Re: [platform-swt-dev] 'Unsupported color depth' error on Linux

[Christophe Cornu <Christophe_Cornu@xxxxxxxxxx>]

Hi Rajeev,

Unlike GIF, the BMP encoder should support
all the bit depths.

Chris

Rajeev Sikka <sikkar@xxxxxxxxxx>
Sent by: platform-swt-dev-admin@xxxxxxxxxxx

07/29/2004 01:42 PM

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Subject	[platform-swt-dev] 'Unsupported color depth' error on Linux

Hi, 

I have the following code sequence: 

... 
Image image = ... 
... 
ImageData imageData = image.getImageData(); 
... 
ImageLoader imageLoader = new ImageLoader(); 
imageLoader.save(..., SWT.IMAGE_GIF); 
... 

This runs fine on windows but gives 'Unsupported color depth' error on
Linux. The reason is that the code for Image::getImageData() is different
for Windows and Linux. On Linux the returned ImageData object has color
depth 24 (on windows its 8). Here is the code snippet from Image.java on
Linux: 

ImageData data = "" ImageData(width, height, 24, palette);

Subsequently, the function ImageLoader::save which indirectly calls unloadIntoByteStream(ImageData
) in file GIFFileFormat.java throws a SWT.error, since valid color depths
are only 1, 4, and 8. 

Is there any workaround/alternative way to get around this?

Thanks, 
Rajeev