Class: Wx::SF::ProngArrow

Inherits:
OpenArrow show all
Defined in:
lib/wx/shapes/arrows/prong_arrow.rb

Overview

Class extends the Wx::OpenArrow class and encapsulates arrow shape consisting of single two lines bisecting before the end of the parent line shape.

Direct Known Subclasses

CrossBarProngArrow

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from OpenArrow

#initialize, #scale

Methods inherited from LineArrow

#get_pen, #get_pen_width, #initialize, #scale, #set_parent_shape, #set_pen

Methods inherited from ArrowBase

#get_parent_shape, #initialize, #set_parent_shape, #translate_arrow

Constructor Details

This class inherits a constructor from Wx::SF::OpenArrow

Class Method Details

.arrow(ratio) ⇒ Object 



14
15
16
17
 
# File 'lib/wx/shapes/arrows/prong_arrow.rb', line 14

def arrow(ratio)
  x = ratio*11; y = ratio*5
  [Wx::RealPoint.new(x,0), Wx::RealPoint.new(0, y), Wx::RealPoint.new(0,-y), Wx::RealPoint.new(0, 0)]
end

Instance Method Details

#draw(from, to, dc) ⇒ Wx::Point

Draw arrow shape at the end of a virtual line.

Parameters:

  • from (Wx::RealPoint) —

    Start of the virtual line

  • to (Wx::RealPoint) —

    End of the virtual line

  • dc (Wx::DC) —

    Device context for drawing

Returns:

  • (Wx::Point) —

    translated connection point for arrow



30
31
32
33
34
35
36
37
38
 
# File 'lib/wx/shapes/arrows/prong_arrow.rb', line 30

def draw(from, to, dc)
  cp, wing1, wing2, tip = translate_arrow(vertices, from, to)
  dc.with_pen(pen) do |dc|
    dc.draw_line(cp, wing1)
    dc.draw_line(cp, wing2)
    dc.draw_line(cp, tip)
  end
  cp
end