Class: PREP::Core::Line

Inherits:
Drawable show all
Defined in:
lib/core/line.rb

Overview

直線描画構成要素クラス

Constant Summary collapse

STYLES = 
{
  :solid => "solid",
}
@@default_values = 
{
  :color           => { :red => 0, :green => 0, :blue => 0 },
  :width           => 1,
  :style           => STYLES[:solid],
  :layer           => 2,
  :control_visible => false,
}

Instance Attribute Summary collapse

Attributes inherited from Drawable

#identifier, #layer

Instance Method Summary collapse

Methods inherited from Drawable

#<=>, #calculate_pos, #key_string_to_symbol, #rewind_current_page, #visible?

Constructor Details

#initialize(identifier, values = { }) ⇒ Line

Returns a new instance of Line.



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# File 'lib/core/line.rb', line 30

def initialize(identifier, values = { })
  values = @@default_values.merge(key_string_to_symbol(values))
  super(identifier, values[:layer])

  @start_point = Point.new(values[:start][:x].mm2pixcel, values[:start][:y].mm2pixcel)
  @end_point = Point.new(values[:end][:x].mm2pixcel, values[:end][:y].mm2pixcel)
  @color = Color.new(values[:color][:red], values[:color][:green], values[:color][:blue])
  self.width = values[:width]
  self.style = values[:style]
  @control_visible = values[:control_visible]
end

Instance Attribute Details

#color ⇒ Object (readonly)

Returns the value of attribute color.



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# File 'lib/core/line.rb', line 28

def color
  @color
end

#end_point ⇒ Object (readonly)

Returns the value of attribute end_point.



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# File 'lib/core/line.rb', line 28

def end_point
  @end_point
end

#start_point ⇒ Object (readonly)

Returns the value of attribute start_point.



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# File 'lib/core/line.rb', line 28

def start_point
  @start_point
end

#style ⇒ Object

Returns the value of attribute style.



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# File 'lib/core/line.rb', line 28

def style
  @style
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/core/line.rb', line 28

def width
  @width
end

Instance Method Details

#calculate_region(prep, region, value, stop_on_drawable = nil) ⇒ Object 



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# File 'lib/core/line.rb', line 58

def calculate_region(prep, region, value, stop_on_drawable = nil)
  if self === stop_on_drawable
    raise ReRenderJump.new(region)
  end
  puts "Calculate region for #{self.class}: #{self.identifier} region: #{region}" if ENV["DEBUG"]
  width = [@start_point.x, @end_point.x].max
  height = [@start_point.y, @end_point.y].max

  ret_region = Region.new(0, 0,
                          region.width - width,
                          region.height - height)
  return width, height
end

#draw(prep, region, value, stop_on_drawable = nil) ⇒ Object

直線の描画



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# File 'lib/core/line.rb', line 73

def draw(prep, region, value, stop_on_drawable = nil)
  if self === stop_on_drawable
    raise ReRenderJump.new(region)
  end
  STDERR.puts("Draw on #{self.class} #{self.identifier}") if ENV['DEBUG']
  # 領域判定
  calculate_region(prep, region, value)

  if visible?(value)
    # 幅指定
    prep.current_page.set_line_width(@width)
    # 色指定
    prep.current_page.set_rgb_stroke(@color.red.to_f,
                                     @color.green.to_f,
                                     @color.blue.to_f)
    # 開始位置へ移動
    start_x, start_y = calculate_pos(prep.current_page, region, @start_point.x.to_f, @start_point.y.to_f)
    end_x, end_y = calculate_pos(prep.current_page, region, @end_point.x.to_f, @end_point.y.to_f)
    prep.current_page.move_to(start_x, start_y)
    # 終了位置へ向けて直線描画
    prep.current_page.line_to(end_x, end_y)
    # 実描画
    prep.current_page.stroke
  end

  prep.current_page.drawed = true
end