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blakemadden
 Post subject: get GtkColor RGB values as guint8
PostPosted: Sat Dec 30, 2006 8:09 pm 
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Joined: Tue Nov 28, 2006 9:42 pm
Posts: 3
I'm trying to format a GtkColor as an HTML color spec (e.g., "#AF0000"), but to do this you need your RGB values as bytes in the range of 0-255. GtkColor RGB values are uint16s that range from 0-65,000+, so I'm afraid that these values are too big. Is there a way to convert a gint16 into a guint8 correctly?
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Micah Carrick
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PostPosted: Sat Dec 30, 2006 11:16 pm 
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Never Seen the Sunlight

Joined: Wed Sep 21, 2005 12:07 am
Posts: 563
Location: Portland, OR USA
Divide it by 256 since 65536 is simply 256 * 256.

If there are 256 variations of a color element, and it's represented by a range of 0 - (256*256) then each step of color has a value of 256. So, a value of 0 - 255 is actually 0, 256 - 511 is actually 1, etc.

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