Module: Thinreports::BasicReport::Generator::PrawnExt::CalcImageDimensions

Defined in:
lib/thinreports/basic_report/generator/pdf/prawn_ext/calc_image_dimensions.rb

Instance Method Summary collapse

Instance Method Details

#calc_image_dimensions(options) ⇒ Object

Implement :auto_fit option for image size calculation.

When the image is larger than the box, the original: fit option does not change the image size. The :auto_fit option changes the image size to fit in the box while maintaining the aspect ratio.

Usage:

image '/path/to/image.png', at: [100, 100], auto_fit: [100, 100]



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# File 'lib/thinreports/basic_report/generator/pdf/prawn_ext/calc_image_dimensions.rb', line 17

def calc_image_dimensions(options)
  if options[:auto_fit]
    image_width = options[:width] || width
    image_height = options[:height] || height

    box_width, box_height = options.delete(:auto_fit)

    options[:fit] = [box_width, box_height] if image_width > box_width || image_height > box_height
  end
  super(options)
end