Class: Wx::SF::LayoutAlgorithm

Inherits:
Object
  • Object
show all
Defined in:
lib/wx/shapes/auto_layout.rb

Overview

Base class for all layouting algorithms.

Instance Method Summary collapse

Instance Method Details

#do_layout(shapes) ⇒ Object

Function performing the layout change. All derived classes must implement it.

Parameters:

  • shapes (Array<Shape>) —

    List of shapes which should be layout-ed



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# File 'lib/wx/shapes/auto_layout.rb', line 11

def do_layout(shapes)
  ::Kernel.raise NotImplementedError
end

#get_bounding_box(shapes) ⇒ Wx::Rect (protected)

Calculate bounding box surrounding given shapes.

Parameters:

Returns:



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# File 'lib/wx/shapes/auto_layout.rb', line 20

def get_bounding_box(shapes)
  shapes.inject(nil) do |rct_bb, shape|
    rct_bb ? rct_bb.union!(shape.get_bounding_box) : shape.get_bounding_box
  end
end

#get_shapes_center(shapes) ⇒ Wx::RealPoint (protected)

Get center point of given shapes.

Parameters:

Returns:



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# File 'lib/wx/shapes/auto_layout.rb', line 41

def get_shapes_center(shapes)
  center = shapes.inject(Wx::RealPoint.new) do |centre, shape|
    sh_pos = shape.get_absolute_position
    centre.x += sh_pos.x
    centre.y += sh_pos.y
    centre
  end
  center.x /= shapes.size
  center.y /= shapes.size
  center
end

#get_shapes_extent(shapes) ⇒ Wx::Size (protected)

Get overall extent of all given shapes calculated as a sum of their width and height.

Parameters:

Returns:



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# File 'lib/wx/shapes/auto_layout.rb', line 29

def get_shapes_extent(shapes)
  shapes.inject(Wx::Size.new) do |ext_sz, shape|
    sh_bb = shape.get_bounding_box
    ext_sz.width += sh_bb.width
    ext_sz.height += sh_bb.height
    ext_sz
  end
end

#get_top_left(shapes) ⇒ Wx::RealPoint (protected)

Get top-left point of bounding box surrounding given shapes.

Parameters:

Returns:

  • (Wx::RealPoint) —

    Top-left point of bounding box surrounding given shapes



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# File 'lib/wx/shapes/auto_layout.rb', line 56

def get_top_left(shapes)
  shapes.inject(Wx::RealPoint.new(::Float::MAX, ::Float::MAX)) do |pos, shape|
    sh_pos = shape.get_absolute_position
    pos.x = sh_pos.x if sh_pos.x < pos.x
    pos.y = sh_pos.y if sh_pos.y < pos.y
    pos
  end
end