Class: Magick::RVG::Image

Inherits:
Object
  • Object
show all
Includes:
Describable, Duplicatable, PreserveAspectRatio, Stylable, Transformable
Defined in:
lib/rvg/embellishable.rb

Instance Attribute Summary

Attributes included from Describable

#desc, #metadata, #title

Instance Method Summary collapse

Methods included from Duplicatable

#deep_copy

Methods included from PreserveAspectRatio

#preserve_aspect_ratio

Methods included from Transformable

#matrix, #rotate, #scale, #skewX, #skewY, #translate

Methods included from Stylable

#styles

Constructor Details

#initialize(image, width = nil, height = nil, x = 0, y = 0) ⇒ Image

Composite a raster image in the viewport defined by [x,y] and width and height. Use the RVG::ImageConstructors#image method to create Text objects in a container.



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# File 'lib/rvg/embellishable.rb', line 237

def initialize(image, width=nil, height=nil, x=0, y=0)
    super()             # run module initializers
    @image = image.copy # use a copy of the image in case app. re-uses the argument
    @x, @y, @width, @height = Magick::RVG.convert_to_float(x, y, width || @image.columns, height || @image.rows)
    if @width < 0 || @height < 0
        raise ArgumentError, "width, height must be >= 0"
    end
    init_viewbox()
end

Instance Method Details

#add_primitives(gc) ⇒ Object

:nodoc:



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# File 'lib/rvg/embellishable.rb', line 247

def add_primitives(gc)      #:nodoc:
    # Do not render if width or height is 0
    return if @width == 0 || @height == 0
    gc.push
    add_transform_primitives(gc)
    add_style_primitives(gc)
    add_composite_primitive(gc)
    gc.pop
end