Class: PREP::Core::Group

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

Overview

呼び出し可能グループの定義

Constant Summary collapse

@@allow_all = 
false

Instance Attribute Summary collapse

Attributes inherited from Drawable

#identifier, #layer

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Drawable

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

Constructor Details

#initialize(identifier = "main", values = { }) ⇒ Group

初期化



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# File 'lib/core/group.rb', line 32

def initialize(identifier = "main", values = { })
  super(identifier)

  @drawables = { }
  values.keys.each do |key|
    unless key == "type" # type は除外
      add_drawable(key, values[key])
    end
  end
end

Instance Attribute Details

#drawables ⇒ Object (readonly)

Returns the value of attribute drawables.



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# File 'lib/core/group.rb', line 21

def drawables
  @drawables
end

Class Method Details

.allow_all ⇒ Object 



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# File 'lib/core/group.rb', line 23

def self.allow_all
  return @@allow_all
end

.allow_all=(v) ⇒ Object 



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# File 'lib/core/group.rb', line 27

def self.allow_all=(v)
  @@allow_all = !!v
end

Instance Method Details

#[](drawable_key) ⇒ Object

指定された識別子を持つ定義情報を返却



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# File 'lib/core/group.rb', line 44

def [](drawable_key)
  if @drawables.has_key?(drawable_key.to_sym)
    return @drawables[drawable_key.to_sym]
  else
    raise "Unknown drawable key \"#{drawable_key}\"."
  end
end

#add_drawable(identifier, config, global = false) ⇒ Object

構成要素の追加

引数に渡されるのは単一の構成要素



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# File 'lib/core/group.rb', line 60

def add_drawable(identifier, config, global = false)
  # 事前にキー重複をチェック
  if @drawables.has_key?(identifier.to_sym)
    raise "Duplicated ID \"#{identifier}\"."
  end
  # キー重複が無ければ設定情報を読み込む
  # 構成要素種別の指定を確認
  case config["type"]
  when "label"
    klass = Label
    unless @@allow_all
      @drawables.values.each do |drawable|
        if Loop === drawable
          raise "Group already has Loop!!"
        end
      end
    end
  when "line"
    klass = Line
    unless @@allow_all
      @drawables.values.each do |drawable|
        if Loop === drawable
          raise "Group already has Loop!!"
        end
      end
    end
  when "rectangle"
    klass = Rectangle
    unless @@allow_all
      @drawables.values.each do |drawable|
        if Loop === drawable
          raise "Group already has Loop!!"
        end
      end
    end
  when "arc_rectangle"
    klass = ArcRectangle
    unless @@allow_all
      @drawables.values.each do |drawable|
        if Loop === drawable
          raise "Group already has Loop!!"
        end
      end
    end
  when "image"
    klass = Image
    unless @@allow_all
      @drawables.values.each do |drawable|
        if Loop === drawable
          raise "Group already has Loop!!"
        end
      end
    end
  when "group"
    # global でのみグループ定義を許可
    unless global
      raise "Group definition allowed at global level only for \"#{identifier}\"."
    end
    klass = Group
  when "loop"
    klass = Loop
    unless @@allow_all
      unless @drawables.size.zero?
        raise "Group has only one loop!!"
      end
    end
  else
    raise "Unknown type expression \"#{config["type"]}\"."
  end

  @drawables[identifier.to_sym] = klass.new(identifier, config)
end

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

グループを構成する各要素が全体で占有する領域サイズを返却



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# File 'lib/core/group.rb', line 149

def calculate_region(prep, region, values, 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"]
  values ||= { }

  # 各構成要素の描画領域を計算して最大の領域を計算、width, height のみを利用
  group_region_size = drawable_items.inject({ }) do |size, drawable|
    if values.has_key?(drawable.identifier.to_sym)
      drawable_values = values[drawable.identifier.to_sym]
    else
      drawable_values = { }
    end

    width, height = drawable.calculate_region(prep, region, drawable_values, stop_on_drawable)

    size[:width] ||= width
    size[:height] ||= height
    size[:width] = width if size[:width] < width
    size[:height] = height if size[:height] < height

    next size
  end

  group_region_size[:width] ||= 0
  group_region_size[:height] ||= 0

  ret_region = Region.new(0, 0,
                          region.width - group_region_size[:width],
                          region.height - group_region_size[:height])
  return group_region_size[:width], group_region_size[:height]
end

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



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# File 'lib/core/group.rb', line 183

def draw(prep, region, values, 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']
  values ||= { }
  # 管理対象の各オブジェクトに対して描画を開始
  drawable_items.each do |drawable|
    if values.has_key?(drawable.identifier.to_sym)
      drawable_values = values[drawable.identifier.to_sym]
    else
      drawable_values = { }
    end

    drawable.draw(prep, region, drawable_values, stop_on_drawable)
  end
end

#drawable_items ⇒ Object

描画対象となる構成要素の一覧を返却



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# File 'lib/core/group.rb', line 202

def drawable_items
  return @drawables.values.map { |d|
    case d
    when Group
      next nil
    else
      next d
    end
  }.compact.sort
end

#generate_sample_dataset(prep) ⇒ Object

データセット雛形を生成



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# File 'lib/core/group.rb', line 134

def generate_sample_dataset(prep)
  dataset = { }
  drawable_items.each do |drawable|
    case drawable
    when Loop, Group
      dataset[drawable.identifier.to_sym] = drawable.generate_sample_dataset(prep)
    when Label
      dataset[drawable.identifier.to_sym] = drawable.label
    end
  end

  return dataset
end

#has_identifier?(key) ⇒ Boolean

指定された識別子を持つ定義情報の有無を返却

Returns:

  • (Boolean) 


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# File 'lib/core/group.rb', line 53

def has_identifier?(key)
  return @drawables.has_key?(key)
end