Class: Rabbit::ImageManipulable::Base

Inherits:
Object
  • Object
show all
Extended by:
ModuleLoader
Defined in:
lib/rabbit/image/base.rb

Direct Known Subclasses

Default, Dia, EPS, GIMP, Mermaid, PDF, SVG

Constant Summary

Constants included from ModuleLoader

ModuleLoader::LOADERS

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ModuleLoader

extend_object, find_loader, loaders, push_loader, unshift_loader

Constructor Details

#initialize(filename, props, canvas: nil) ⇒ Base

Returns a new instance of Base.



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# File 'lib/rabbit/image/base.rb', line 57

def initialize(filename, props, canvas: nil)
  @filename = filename
  @properties = Properties.new(props)
  @canvas = canvas
  initialize_keep_ratio
  @animation = nil
  @animation_iterator = nil
  @animation_timeout = nil
  update_size
  @original_width = @width
  @original_height = @height
end

Instance Attribute Details

#animation ⇒ Object (readonly)

Returns the value of attribute animation.



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# File 'lib/rabbit/image/base.rb', line 55

def animation
  @animation
end

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/rabbit/image/base.rb', line 51

def filename
  @filename
end

#original_height ⇒ Object (readonly)

Returns the value of attribute original_height.



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# File 'lib/rabbit/image/base.rb', line 54

def original_height
  @original_height
end

#original_width ⇒ Object (readonly)

Returns the value of attribute original_width.



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# File 'lib/rabbit/image/base.rb', line 53

def original_width
  @original_width
end

#properties ⇒ Object (readonly)

Returns the value of attribute properties.



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# File 'lib/rabbit/image/base.rb', line 52

def properties
  @properties
end

Class Method Details

.delegate ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 31

def delegate
  extend Forwardable

  def_delegators(:@delegated_loader,
                 :draw,
                 :ensure_resize,
                 :height,
                 :internal_pixbuf,
                 :keep_ratio,
                 :keep_ratio=,
                 :keep_ratio?,
                 :original_height,
                 :original_width,
                 :pixbuf,
                 :resize,
                 :update_size,
                 :width)
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 70

def [](key)
  @properties[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 74

def []=(key, value)
  @properties[key] = value
end

#draw(canvas, x, y, params = {}) ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 139

def draw(canvas, x, y, params={})
  default_params = default_draw_params(x, y)
  target_pixbuf = pixbuf
  if @animation_iterator
    @animation_iterator.advance
    target_pixbuf = @animation_iterator.pixbuf
    update_animation_timeout(canvas)
  end
  canvas.draw_pixbuf(target_pixbuf, x, y, default_params.merge(params))
end

#height ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 97

def height
  (relative_clip_height&.resolve(@height) || @height) -
    (relative_clip_y&.resolve(@height) || 0)
end

#keep_ratio=(value) ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 84

def keep_ratio=(value)
  @properties.keep_ratio = value
end

#keep_ratio? ⇒ Boolean Also known as: keep_ratio

Returns:

  • (Boolean) 


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# File 'lib/rabbit/image/base.rb', line 78

def keep_ratio?
  @properties.keep_ratio
end

#pixbuf ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 88

def pixbuf
  @pixbuf
end

#relative_clip_height ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 114

def relative_clip_height
  @properties.get_relative_size("relative_clip_height", @filename)
end

#relative_clip_width ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 110

def relative_clip_width
  @properties.get_relative_size("relative_clip_width", @filename)
end

#relative_clip_x ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 102

def relative_clip_x
  @properties.get_relative_size("relative_clip_x", @filename)
end

#relative_clip_y ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 106

def relative_clip_y
  @properties.get_relative_size("relative_clip_y", @filename)
end

#resize(w, h) ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 118

def resize(w, h)
  if w.nil? and h.nil?
    return
  elsif keep_ratio?
    if w and h.nil?
      h = (original_height * w.to_f / original_width).ceil
    elsif w.nil? and h
      w = (original_width * h.to_f / original_height).ceil
    end
  else
    w ||= width
    h ||= height
  end
  w = w.ceil if w
  h = h.ceil if h
  if w and w > 0 and h and h > 0 and [w, h] != [width, height]
    @width = w
    @height = h
  end
end

#width ⇒ Object 



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# File 'lib/rabbit/image/base.rb', line 92

def width
  (relative_clip_width&.resolve(@width) || @width) -
    (relative_clip_x&.resolve(@width) || 0)
end