Module: Glimmer::SWT::Custom::Shape::PathSegment

Included in:
Line, Path, Point
Defined in:
lib/glimmer/swt/custom/shape/path_segment.rb

Overview

Represents path segments like point, line, quad, and cubic curves Shapes could mix in

Instance Method Summary collapse

Instance Method Details

#add_to_swt_path(swt_path) ⇒ Object 



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 66

def add_to_swt_path(swt_path)
  if @swt_path != swt_path
    @swt_path = swt_path
    the_path_segment_args = path_segment_args.dup
    if !previous_point_connected? && !is_a?(Point)
      if the_path_segment_args.count > 2
        point = the_path_segment_args.shift, the_path_segment_args.shift
        @swt_path.moveTo(*point)
      elsif first_path_segment? && self.class != Path
        point = the_path_segment_args[0..1]
        @swt_path.moveTo(*point)
      end
    end
    @swt_path.send(path_segment_method_name, *the_path_segment_args)
  end
end

#dispose ⇒ Object 



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 54

def dispose
  parent.post_dispose_content(self) if parent.is_a?(Path)
end

#first_path_segment? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 58

def first_path_segment?
  parent.path_segments.first == self
end

#path_segment_args ⇒ Object

Subclasses must override and implement to indicate args to pass when invoking SWT Path object method



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 38

def path_segment_args
  []
end

#path_segment_geometry_args ⇒ Object

Subclasses must override and implement to indicate args to pass when invoking SWT Path object method



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 46

def path_segment_geometry_args
  path_segment_args
end

#path_segment_geometry_method_name ⇒ Object

Subclasses may override to provide name of method to invoke for geometry object obtained from the Java AWT library java.awt.geom.Path2D.Double (e.g. curveTo vs cubicTo)



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 42

def path_segment_geometry_method_name
  path_segment_method_name
end

#path_segment_method_name ⇒ Object

Subclasses must override and implement to indicate method name to invoke on SWT Path object to add segment



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 34

def path_segment_method_name
  nil
end

#previous_path_segment ⇒ Object 



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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 62

def previous_path_segment
  parent.path_segments[parent.path_segments.index(self) - 1] || self
end

#previous_point_connected? ⇒ Boolean

Subclasses must override to indicate otherwise

Returns:

  • (Boolean) 


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# File 'lib/glimmer/swt/custom/shape/path_segment.rb', line 50

def previous_point_connected?
  true
end