Hi, This question came up today on perlmonks, and it sort of piqued my interest. It concerned laying a radar weather map over a ground map.
The idea was to layer the radar map over the ground map, setting a background transparency on the radar map. Well, I could do this with GD, as shown in the attached script GD-transparency-add. It has a simple $gd->transparent($green); to set green as transparent. So I used this script to change the green section of zzrgbwb.png to transparent, as zzrgbwb-gt.png. Then I load that transparent overlay over a basefile of your choice in the script transparent2, Now the REAL question is "How to do this with Gtk2's pixbuf and Image methods?" How do I take the non-transparent zzrgbwb.png , load it with Gtk2, and make green transparent without resorting to GD? Thanks, zentara -- I'm not really a human, but I play one on earth. http://zentara.net/CandyGram_for_Mongo.html
GD-transparency-add
Description: Binary data
<<attachment: zzrgbwb.png>>
<<attachment: zzrgbwb-gt.png>>
transparent2
Description: Binary data
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