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Can I set a transparent/alpha color on uploaded image?
Rank: Member
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Joined: 2/12/2004(UTC)
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I have a simple GIF image with a white background that I want to upload with image uploader flash 8.
Is there a way to create a transparency during the upload or in the handling of the upload?
I thought maybe I could use the ThumbnailBgColor but it doesn't seem to work. Apparently this is only used for making sure you KEEP an existing transparency for a thumbnail? Correct?
<cc3:Converter ThumbnailBgColor="#FFFFFF" Mode="*.*=Thumbnail" ThumbnailHeight="150" ThumbnailWidth="1000" ThumbnailFitMode="Fit" />
Here's how I'm handling it once it's uploaded in vb.net/asp.net
Dim tfile As Aurigma.ImageUploader.ConvertedFile = uploadedfile.ConvertedFiles(0)
Dim bytes As Byte() = br.ReadBytes(DirectCast(fs.Length, Long))
Then I use the bytes array to store it as an image in SQL server as an image type.
Nothing I do seems to be able to add a transparency or alpha information to an image.
Is this correct? Is there absolutely no way to do this with image uploader flash 8?
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Rank: Advanced Member
Groups: Member, Administration
Joined: 8/2/2003(UTC)
Posts: 876
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Unfortunately, the uploader cannot do it. However you can process the image on the server using some imaging SDK, for example, our Graphics Mill ( www.graphicsmill.com/). With Graphics Mill you can load the GIF file as a 8-bit palette-based image and specify what palette entry should be considered to be transparent. Please let me know if you need a code example for it.
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Aurigma Forums
»
Upload Suite
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Discussions – HTML5/Flash Uploader
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Can I set a transparent/alpha color on uploaded image?
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