graphics::primitive::componentlist(3pm) [debian man page]

Graphics::Primitive::ComponentList(3pm) 		User Contributed Perl Documentation		   Graphics::Primitive::ComponentList(3pm)

NAME

       Graphics::Primitive::ComponentList - List of Components

DESCRIPTION

       Maintains a list of components and their constraints.  This is implemented as a class to provide functionality above and beyond a simple
       array.

SYNOPSIS

	 my $c = Graphics::Primitive::ComponentList->new;
	 $c->add_component($comp, $constraint);

	 my $cindex = $c->find_component($comp->name);

METHODS

   Constructor
       new Creates a new Container.

   Instance Methods
       add_component ($component, $constraint)
	   Add a component to the list.  Returns a true value if the component was added successfully. A second argument may be required, please
	   consult the POD for your specific layout manager implementation.

	   Before the component is added, it is passed to the validate_component method.  If validate_component does not return a true value, then
	   the component is not added.

       clear
	   Reset components and constraints to empty arrayrefs.

       component_count
	   Returns the number of components in this list.

       constraint_count
	   Returns the number of constraints in this list.

       each
	   Calls the supplied CODEREF for each component in this list, passing the component and it's constraints as arguments.

	     my $flist = $list->each(
	       sub{
		   my ($component, $constraint) = @_; $comp->class('foo)
	       }
	     );

       find
	   Returns a new ComponentList containing only the components for which the supplied CODEREF returns true.  The coderef is called for each
	   component and is passed the component and it's constraints.	Undefined components (the ones left around after a remove_component) are
	   automatically skipped.

	     my $flist = $list->find(
	       sub{
		 my ($component, $constraint) = @_; return $comp->class eq 'foo'
	       }
	     );

	   If no matching components are found then a new list is returned so that simple calls liked $container->find(...)->each(...) don't
	   explode.

       find_component
	   Returns the index of the first component with the supplied name.  Returns undef if no component with that name is found.

       get_component
	   Get the component at the specified index.

       get_constraint
	   Get the constraint at the specified index.

       remove_component
	   Removes a component and it's constraint.  Components must have names to be removed.	Returns an arrayref of Components that were
	   removed.

AUTHOR

       Copyright 2008-2009 by Cory G Watson.

BUGS

       Please report any bugs or feature requests to "bug-geometry-primitive at rt.cpan.org", or through the web interface at
       http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Geometry-Primitive <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Geometry-Primitive>.  I
       will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

COPYRIGHT &; LICENSE
       Copyright 2008-2009 by Cory G Watson.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.12.3							    2010-08-21				   Graphics::Primitive::ComponentList(3pm)

Graphics::Primitive::Driver::Cairo(3pm) 		User Contributed Perl Documentation		   Graphics::Primitive::Driver::Cairo(3pm)

NAME

       Graphics::Primitive::Driver::Cairo - Cairo backend for Graphics::Primitive

VERSION

       version 0.44

SYNOPSIS

	   use Graphics::Primitive::Component;
	   use Graphics::Primitive::Driver::Cairo;

	   my $driver = Graphics::Primitive::Driver::Cairo->new;
	   my $container = Graphics::Primitive::Container->new(
	       width => 800,
	       height => 600
	   );
	   my $black = Graphics::Primitive::Color->new(red => 0, green => 0, blue => 0);
	   $container->border->width(1);
	   $container->border->color($black);
	   $container->padding(
	       Graphics::Primitive::Insets->new(top => 5, bottom => 5, left => 5, right => 5)
	   );
	   my $comp = Graphics::Primitive::Component->new;
	   $comp->background_color($black);
	   $container->add_component($comp, 'c');

	   my $lm = Layout::Manager::Compass->new;
	   $lm->do_layout($container);

	   my $driver = Graphics::Primitive::Driver::Cairo->new(
	       format => 'PDF'
	   );
	   $driver->draw($container);
	   $driver->write('/Users/gphat/foo.pdf');

DESCRIPTION

       This module draws Graphics::Primitive objects using Cairo.

IMPLEMENTATION DETAILS

       Borders
	   Borders are drawn clockwise starting with the top one.  Since cairo can't do line-joins on different colored lines, each border
	   overlaps those before it.  This is not the way I'd like it to work, but i'm opting to fix this later.  Consider yourself warned.

ATTRIBUTES

   antialias_mode
       Set/Get the antialias mode of this driver. Options are default, none, gray and subpixel.

   cairo
       This driver's Cairo::Context object

   format
       Get the format for this driver.

   surface
       Get/Set the surface on which this driver is operating.

METHODS

   data
       Get the data in a scalar for this driver.

   write ($file)
       Write this driver's data to the specified file.

   get_text_bounding_box ($font, $text, $angle)
       Returns two Rectangles that encloses the supplied text. The origin's x and y maybe negative, meaning that the glyphs in the text extending
       left of x or above y.

       The first rectangle is the bounding box required for a container that wants to contain the text.  The second box is only useful if an
       optional angle is provided.  This second rectangle is the bounding box of the un-rotated text that allows for a controlled rotation.  If no
       angle is supplied then the two rectangles are actually the same object.

       If the optional angle is supplied the text will be rotated by the supplied amount in radians.

   get_textbox_layout ($tb)
       Returns a Graphics::Primitive::Driver::TextLayout for the supplied textbox.

   reset
       Reset the driver.

   draw
       Draws the specified component.  Container's components are drawn recursively.

ACKNOWLEDGEMENTS

       Danny Luna

AUTHOR

       Cory G Watson <gphat@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2011 by Cold Hard Code, LLC.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.12.4							    2011-09-27				   Graphics::Primitive::Driver::Cairo(3pm)