[platform-swt-dev] SWT ImageData -- How to obtain number of channels

[JIA Pei <jp4work@xxxxxxxxx>]

Hi, all:

I'm wondering how I can obtain the number of channels for a loaded image, using SWT technology.

Let's have a look at the following website first.

[url="" href="http://www.eclipse.org/articles/Article-SWT-images/graphics-resources.html#ImageData">http://www.eclipse.org/articles/Article-SWT-images/graphics-resources.html#ImageData] http://www.eclipse.org/articles/Article-SWT-images/graphics- resources.html#ImageData[/url]

By using 

[code]

ImageData ideaImageData = new ImageData(

    getClass().getResourceAsStream("Idea.jpg"));[/code]

we loaded an image and stored in [code]ImageData ideaImageDat[/code]

In Eclipse' documentation at

[url="" href="http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/api/overview-summary.html">http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/api/overview-summary.html] http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/reference/api/overview-summary.html[/url]

Nothing can be found to tell "number of image channels", in the class "ImageData".

What I would like to find is something like a function getNbOfChannels();

If the loaded image "idea.jpg" is a color image, then, the function returns 3

If it is a gray image, then, the function returns 1.

Can anybody help to give me a hand ?

Cheers

JIA Pei

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