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################################################################################################### |
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# Copyright 2013/2014 by Marcel Greter |
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# This file is part of OCBNET-WebSprite (GPL3) |
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#################################################################################################### |
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package OCBNET::Image; |
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#################################################################################################### |
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# implementation agnostic image library for OCBNET-WebSprite |
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# will either use GD, Image::Magick or Graphics::Magick |
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#################################################################################################### |
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our $VERSION = '1.0.1'; |
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#################################################################################################### |
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use Carp; |
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use strict; |
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use warnings; |
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use vars qw(@ISA); |
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#################################################################################################### |
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# check if needed module is already loaded |
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# otherwise we try to load an implementation |
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#################################################################################################### |
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# determine module |
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my $module; |
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# check for pre-loaded module first |
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if (eval { $OCBNET::Image::GD::VERSION }) { $module = "gd" } |
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elsif (eval { $OCBNET::Image::GM::VERSION }) { $module = "gm" } |
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elsif (eval { $OCBNET::Image::IM::VERSION }) { $module = "im" } |
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# check for pre-loaded library next |
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elsif (eval { $GD::VERSION }) { $module = "gd" } |
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elsif (eval { $Graphic::Magick::VERSION }) { $module = "gm" } |
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elsif (eval { $Image::Magick::VERSION }) { $module = "im" } |
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# finally try to load an implementation on my own |
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elsif (eval { require OCBNET::Image::GD }) { $module = "gd" } |
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elsif (eval { require OCBNET::Image::GM }) { $module = "gm" } |
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elsif (eval { require OCBNET::Image::IM }) { $module = "im" } |
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# fatal error if no implementation was loaded |
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else { die "no graphic implementation found" } |
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# put the correct base class implementation into place |
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if ($module eq "gd") { require OCBNET::Image::GD; push @ISA, qw(OCBNET::Image::GD) } |
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elsif ($module eq "gm") { require OCBNET::Image::GM; push @ISA, qw(OCBNET::Image::GM) } |
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elsif ($module eq "im") { require OCBNET::Image::IM; push @ISA, qw(OCBNET::Image::IM) } |
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#################################################################################################### |
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#################################################################################################### |
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1; |