Imager transparent background instead of black

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I'm using Imager to generate thumbnails and center them on a background. When I create a new image with Imager->new how do I tell it to make the background transparent (or even white) instead of black?

Comment on Imager transparent background instead of black

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Re: Imager transparent background instead of black by Khen1950fx (Canon) on Nov 11, 2010 at 03:16 UTC
I'd use Imager::Fill. `#!/usr/bin/perl use strict; use warnings; use Imager; use Imager::Fill; my $fill = Imager::Fill->new(type => "opacity", other => $fill, opacity => 0.25);` [download] where $fill is The Imager::Fill object you want to modify, and the default opacity is 0.5. You can modify the opacity to get the level of tranparency that you want.	[reply] [d/l]
Re: Imager transparent background instead of black by Anonymous Monk on Nov 10, 2010 at 19:12 UTC
grep -C2 background grep -C2 transparent grep -C2 alpha	[reply]
Re: Imager transparent background instead of black by tonyc (Hermit) on Nov 22, 2010 at 00:12 UTC
By default Imager->new creates a 3 channel image, which has no alpha channel. To create a transparent image, create a 4 channel image: `my $im = Imager->new(xsize => $width, ysize => $height, channels => 4);`	[reply] [d/l]