Class: Emfsvg::DeviceContext

Inherits:
Object
  • Object
show all
Defined in:
lib/emfsvg/device_context.rb

Overview

Snapshot of GDI drawing state. Pushed onto TransformStack on SaveDC, popped on RestoreDC.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DeviceContext

Returns a new instance of DeviceContext.



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# File 'lib/emfsvg/device_context.rb', line 32

def initialize
  @pen = Pen.default
  @brush = Brush.default
  @font = Font.default
  @text_color = Emf::Model::Geometry::Color.black
  @bk_color = Emf::Model::Geometry::Color.white
  @bk_mode = 1 # TRANSPARENT
  @poly_fill_mode = 1 # ALTERNATE (evenodd)
  @text_align = 0
  @stretch_mode = 1
  @miter_limit = 10.0
  @world_transform = Emf::Model::Geometry::Matrix.identity
  @brush_origin = [0, 0]
  @icm_mode = 0
  @layout = 0
  @mapper_flags = 0
  @arc_direction = 0 # default; set by SetArcDirection (1=CW, -1=CCW in C)
  @clip_region = nil
  @clip_id = nil
  # Coordinate state shared across all dup'd DCs (see CoordinateState).
  @coordinate_state = CoordinateState.new
end

Instance Attribute Details

#arc_direction ⇒ Object

Returns the value of attribute arc_direction.



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# File 'lib/emfsvg/device_context.rb', line 55

def arc_direction
  @arc_direction
end

#bk_color ⇒ Object

Returns the value of attribute bk_color.



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# File 'lib/emfsvg/device_context.rb', line 55

def bk_color
  @bk_color
end

#bk_mode ⇒ Object

Returns the value of attribute bk_mode.



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# File 'lib/emfsvg/device_context.rb', line 55

def bk_mode
  @bk_mode
end

#brush ⇒ Object

Returns the value of attribute brush.



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# File 'lib/emfsvg/device_context.rb', line 55

def brush
  @brush
end

#brush_origin ⇒ Object

Returns the value of attribute brush_origin.



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# File 'lib/emfsvg/device_context.rb', line 55

def brush_origin
  @brush_origin
end

#clip_id ⇒ Object

Returns the value of attribute clip_id.



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# File 'lib/emfsvg/device_context.rb', line 55

def clip_id
  @clip_id
end

#clip_region ⇒ Object

Returns the value of attribute clip_region.



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# File 'lib/emfsvg/device_context.rb', line 55

def clip_region
  @clip_region
end

#coordinate_state ⇒ Object

Returns the value of attribute coordinate_state.



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# File 'lib/emfsvg/device_context.rb', line 55

def coordinate_state
  @coordinate_state
end

#font ⇒ Object

Returns the value of attribute font.



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# File 'lib/emfsvg/device_context.rb', line 55

def font
  @font
end

#icm_mode ⇒ Object

Returns the value of attribute icm_mode.



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# File 'lib/emfsvg/device_context.rb', line 55

def icm_mode
  @icm_mode
end

#layout ⇒ Object

Returns the value of attribute layout.



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# File 'lib/emfsvg/device_context.rb', line 55

def layout
  @layout
end

#mapper_flags ⇒ Object

Returns the value of attribute mapper_flags.



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# File 'lib/emfsvg/device_context.rb', line 55

def mapper_flags
  @mapper_flags
end

#miter_limit ⇒ Object

Returns the value of attribute miter_limit.



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# File 'lib/emfsvg/device_context.rb', line 55

def miter_limit
  @miter_limit
end

#pen ⇒ Object

Returns the value of attribute pen.



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# File 'lib/emfsvg/device_context.rb', line 55

def pen
  @pen
end

#poly_fill_mode ⇒ Object

Returns the value of attribute poly_fill_mode.



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# File 'lib/emfsvg/device_context.rb', line 55

def poly_fill_mode
  @poly_fill_mode
end

#stretch_mode ⇒ Object

Returns the value of attribute stretch_mode.



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# File 'lib/emfsvg/device_context.rb', line 55

def stretch_mode
  @stretch_mode
end

#text_align ⇒ Object

Returns the value of attribute text_align.



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# File 'lib/emfsvg/device_context.rb', line 55

def text_align
  @text_align
end

#text_color ⇒ Object

Returns the value of attribute text_color.



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# File 'lib/emfsvg/device_context.rb', line 55

def text_color
  @text_color
end

#world_transform ⇒ Object

Returns the value of attribute world_transform.



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# File 'lib/emfsvg/device_context.rb', line 55

def world_transform
  @world_transform
end

Instance Method Details

#dup ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 114

def dup
  other = DeviceContext.allocate
  other.pen = pen.dup
  other.brush = brush.dup
  other.font = font.dup
  other.text_color = text_color
  other.bk_color = bk_color
  other.bk_mode = bk_mode
  other.poly_fill_mode = poly_fill_mode
  other.text_align = text_align
  other.stretch_mode = stretch_mode
  other.miter_limit = miter_limit
  other.world_transform = world_transform
  other.brush_origin = brush_origin.dup
  other.icm_mode = icm_mode
  other.layout = layout
  other.mapper_flags = mapper_flags
  other.arc_direction = arc_direction
  other.clip_region = clip_region
  other.clip_id = clip_id
  # CoordinateState is shared by reference — SaveDC/RestoreDC must
  # not snapshot/restore the coordinate state per libemf2svg.
  other.coordinate_state = coordinate_state
  other
end

#map_mode ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 58

def map_mode
  coordinate_state.map_mode
end

#map_mode=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 62

def map_mode=(value)
  coordinate_state.map_mode = value
end

#viewport_ext ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 74

def viewport_ext
  coordinate_state.viewport_ext
end

#viewport_ext=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 78

def viewport_ext=(value)
  coordinate_state.viewport_ext = value
end

#viewport_ext_set=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 110

def viewport_ext_set=(value)
  coordinate_state.viewport_ext_set = value
end

#viewport_ext_set? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/emfsvg/device_context.rb', line 102

def viewport_ext_set?
  coordinate_state.viewport_ext_set
end

#viewport_org ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 90

def viewport_org
  coordinate_state.viewport_org
end

#viewport_org=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 94

def viewport_org=(value)
  coordinate_state.viewport_org = value
end

#window_ext ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 66

def window_ext
  coordinate_state.window_ext
end

#window_ext=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 70

def window_ext=(value)
  coordinate_state.window_ext = value
end

#window_ext_set=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 106

def window_ext_set=(value)
  coordinate_state.window_ext_set = value
end

#window_ext_set? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/emfsvg/device_context.rb', line 98

def window_ext_set?
  coordinate_state.window_ext_set
end

#window_org ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 82

def window_org
  coordinate_state.window_org
end

#window_org=(value) ⇒ Object 



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# File 'lib/emfsvg/device_context.rb', line 86

def window_org=(value)
  coordinate_state.window_org = value
end