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package Draft::Drawing; |
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=head1 NAME |
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Draft::Drawing - CAD drawing type |
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=head1 SYNOPSIS |
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A directory that contains multiple drawing elements |
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=head1 DESCRIPTION |
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A simple file-system directory/folder that contains any number of |
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drawing objects, represented by files; and optionally, any number of |
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further drawings represented by subdirectories. |
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Note that this is not completely analogous to a traditional |
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monolithic CAD file format, as blocks/symbols associated with a |
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drawing are complete drawings in their own right. |
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=cut |
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use strict; |
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use warnings; |
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use Draft; |
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use Draft::TkGui::Drawing; |
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use File::Atomism; |
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use File::Atomism::utils qw /Extension/; |
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# FIXME shouldn't depend on Tk |
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use vars qw /@ISA/; |
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@ISA = qw /Draft::TkGui::Drawing File::Atomism/; |
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=pod |
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=head1 USAGE |
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Read a drawing into memory, or simply update an already-loaded |
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drawing by using the Read method: |
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$drawing->Read; |
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Note that this method will only access the filesystem if files have |
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actually changed or are new - Feel free to call this method as often |
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as you like as it has very little performance overhead. |
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=cut |
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# FIXME sometimes doesn't delete objects when files are removed |
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sub Read |
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my $self = shift; |
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my ($freshfiles, $stalefiles) = $self->Scan; |
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for my $file (@{$stalefiles}) |
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{ |
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my $key = $self->{_path} . $file; |
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delete $self->{$key} if ($self->{$key}); |
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} |
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for my $file (@{$freshfiles}) |
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{ |
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my $key = $self->{_path} . $file; |
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my $type = Extension ($file); |
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$type = $self->Capitalise ($type); |
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eval "use Draft::Protozoa::$type"; |
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$@ and next; |
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$self->{$key} = eval "Draft::Protozoa::$type->new (\"$key\")" |
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unless exists $self->{$key}; |
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$self->{$key}->Read; |
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$self->{$key}->Process; |
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} |
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} |
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1; |