NAME

       Gtk2::Gdk::Region - wrapper for GdkRegion

HIERARCHY

         Glib::Boxed
         +----Gtk2::Gdk::Region

METHODS

   region = Gtk2::Gdk::Region->new
   rectangle = $region->get_clipbox
   boolean = $region->empty
   boolean = $region1->equal ($region2)
       •   $region2 (Gtk2::Gdk::Region)

   $source1->intersect ($source2)
       •   $source2 (Gtk2::Gdk::Region)

   $region->offset ($dx, $dy)
       •   $dx (integer)

       •   $dy (integer)

   boolean = $region->point_in ($x, $y)
       •   $x (integer)

       •   $y (integer)

   region = Gtk2::Gdk::Region->polygon ($points_ref, $fill_rule)
       •   $points_ref (scalar)

       •   $fill_rule (Gtk2::Gdk::FillRule)

   boolean = $region->rect_equal ($rectangle)
       •   $rectangle (Gtk2::Gdk::Rectangle)

       Since: gtk+ 2.18

   overlaptype = $region->rect_in ($rect)
       •   $rect (Gtk2::Gdk::Rectangle)

   region = Gtk2::Gdk::Region->rectangle ($rectangle)
       •   $rectangle (Gtk2::Gdk::Rectangle)

   list = $region->get_rectangles
       Returns a list of rectangles (Gtk2::Gdk::Rectangle's), the area covered by the region.

   $region->shrink ($dx, $dy)
       •   $dx (integer)

       •   $dy (integer)

   $region->spans_intersect_foreach ($spans_ref, $sorted, $func, $data=undef)
       •   $spans_ref (scalar) arrayref of triples [$x1,$y1,$width1, $x2,$y2,$width2, ...]

       •   $sorted (boolean)

       •   $func (scalar)

       •   $data (scalar)

       Call $function for horizontal lines which intersect $region.

       $spans_ref is an arrayref of x,y,width horizontal lines.  If $sorted is true then they're
       assumed to be sorted by increasing y coordinate (allowing a single pass across the region
       rectangles).  $function is called

           &$function ($x, $y, $width, $data)

       for each portion of a span which intersects $region.  $function must not change $region.

           $region->spans_intersect_foreach ([ 0,0,50, 20,20,100, 0,10,50 ],
                                             0, # spans not sorted by y
                                             \&my_callback,
                                             'hello');  # userdata
           sub my_callback {
             my ($x, $y, $width, $userdata) = @_;
             print "$userdata: $x, $y, $width\n";
           }

   $source1->subtract ($source2)
       •   $source2 (Gtk2::Gdk::Region)

   $source1->union ($source2)
       •   $source2 (Gtk2::Gdk::Region)

   $region->union_with_rect ($rect)
       •   $rect (Gtk2::Gdk::Rectangle)

   $source1->xor ($source2)
       •   $source2 (Gtk2::Gdk::Region)

ENUMS AND FLAGS

   enum Gtk2::Gdk::FillRule
       •   'even-odd-rule' / 'GDK_EVEN_ODD_RULE'

       •   'winding-rule' / 'GDK_WINDING_RULE'

   enum Gtk2::Gdk::OverlapType
       •   'in' / 'GDK_OVERLAP_RECTANGLE_IN'

       •   'out' / 'GDK_OVERLAP_RECTANGLE_OUT'

       •   'part' / 'GDK_OVERLAP_RECTANGLE_PART'

SEE ALSO

       Gtk2, Glib::Boxed

COPYRIGHT

       Copyright (C) 2003-2011 by the gtk2-perl team.

       This software is licensed under the LGPL.  See Gtk2 for a full notice.