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

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

NAME

       Graphics::Primitive::Canvas - Component composed of paths

DESCRIPTION

       Graphics::Primitive::Canvas is a component for drawing arbitrary things.  It holds Paths and Operations.

SYNOPSIS

	 use Graphics::Primitive::Canvas;

	 my $canvas = Graphics::Primitive::Canvas->new;
	 $canvas->move_to($point); # or just $x, $y
	 $canvas->do($op);

DESCRIPTION

       The Canvas is a container for multiple Paths.  It has a path that is the operative path for all path-related methods.  You can treat the
       Canvas as if it was a path, calling methods like line_to or move_to.

       When you are ready to perform an operation on the path, call the do method with the operation you want to call as an argument.  Drawing a
       line and stroking it would look like:

	 $canvas->move_to(0, 0);
	 $canvas->line_to(10, 10);
	 my $op = Graphics::Primitive::Operation::Stroke->new;
	 $stroke->brush->color(
	     Graphics::Color::RGB->new(red => 0, blue => 1, green => 1)
	 );
	 $canvas->do($op);

       When you instantiate a Canvas a newly instantiated path resides in path.  After you call do that current path is moved to the paths list
       and new path is placed in current_path.	If you want to keep the path around you can call save before do then call restore to put a saved
       copy of the path back into path.

METHODS

   Constructor
       new Creates a new Graphics::Primitive::Canvas

   Instance Methods
       do  Given an operation, pushes the current path onto the path stack.

	     FIXME: Example

       path
	   The current path this canvas is using.

       path_count
	   Count of paths in paths.

       paths
	   Arrayref of hashrefs representing paths combined with their operations:

	     [
	       {
		   path => $path,
		   op	=> $op
	       },
	     ]

       restore
	   Replace the current path by popping the top path from the saved path list.

       save
	   Copy the current path and push it onto the stack of saved paths.

       saved_paths
	   List of saved paths.  Add to the list with save and pop from it using restore.

       saved_path_count
	   Count of paths saved in saved_paths.

AUTHOR

       Cory Watson <gphat@cpan.org>

COPYRIGHT &; LICENSE
       Copyright 2008-2010 by Cory G Watson.

       You can redistribute and/or modify this code under the same terms as Perl itself.

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

Check Out this Related Man Page

Gnome2::Canvas::PathDef(3pm)				User Contributed Perl Documentation			      Gnome2::Canvas::PathDef(3pm)

NAME

       Gnome2::Canvas::PathDef - Container and functions for manipulating ArtBpaths

HIERARCHY

	 Glib::Boxed
	 +----Gnome2::Canvas::PathDef

METHODS

   pathdef = Gnome2::Canvas::PathDef->new
   pathdef = Gnome2::Canvas::PathDef->new_sized ($length)
       o   $length (integer)

   boolean = $path->all_closed
   boolean = $path->all_open
   boolean = $path->any_closed
   boolean = $path->any_open
   pathdef = $path->close_all
   pathdef = $path->closed_parts
   $path->closepath
   $path->closepath_current
   pathdef = Gnome2::Canvas::PathDef->concat (...)
       o   ... (list) Gnome2::Canvas::PathDef objects to concatenate

   $dst->copy ($src)
       o   $src (Gnome2::Canvas::PathDef)

       Copy the path from $src into $dst.

       Note: this method has very different semantics than the copy provided by Glib::Boxed.   "duplicate" is the analog there.

   $path->curveto ($x0, $y0, $x1, $y1, $x2, $y2)
       o   $x0 (double)

       o   $y0 (double)

       o   $x1 (double)

       o   $y1 (double)

       o   $x2 (double)

       o   $y2 (double)

   pathdef = $path->duplicate
   $path->ensure_space ($space)
       o   $space (integer)

   $path->finish
   boolean = $path->has_currentpoint
   boolean = $path->is_empty
   integer = $path->length
   $path->lineto ($x, $y)
       o   $x (double)

       o   $y (double)

   $path->lineto_moving ($x, $y)
       o   $x (double)

       o   $y (double)

   $path->moveto ($x, $y)
       o   $x (double)

       o   $y (double)

   pathdef = $path->open_parts
   $path->reset
   @pathdefs = $path->split
SEE ALSO

       Gnome2::Canvas, Glib::Boxed

COPYRIGHT

       Copyright (C) 2003-2004 by the Gtk2-Perl Team.

       This software is licensed under the LGPL; see Gnome2::Canvas for a full notice.

perl v5.14.2							    2011-11-16					      Gnome2::Canvas::PathDef(3pm)

Linux and UNIX Man Pages

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

Check Out this Related Man Page