NAME

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

VERSION

       version 0.47

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) 2016 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.