Class: GifCountdown::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/gif_countdown/generator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(distance_in_seconds:, width: 535, height: 61, fontsize: 30, padding_x: 10, duration: 60, font: 'Ubuntu') ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/gif_countdown/generator.rb', line 6

def initialize(distance_in_seconds:, width: 535, height: 61, fontsize: 30, padding_x: 10, duration: 60, font: 'Ubuntu')
  @distance_in_seconds = distance_in_seconds
  @width = width
  @height = height
  @fontsize = fontsize
  @padding_x = padding_x
  @duration = duration
  @font = font
end

Instance Attribute Details

#font ⇒ Object (readonly)

Returns the value of attribute font.



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# File 'lib/gif_countdown/generator.rb', line 4

def font
  @font
end

#fontsize ⇒ Object (readonly)

Returns the value of attribute fontsize.



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# File 'lib/gif_countdown/generator.rb', line 4

def fontsize
  @fontsize
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/gif_countdown/generator.rb', line 4

def height
  @height
end

#padding_x ⇒ Object (readonly)

Returns the value of attribute padding_x.



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# File 'lib/gif_countdown/generator.rb', line 4

def padding_x
  @padding_x
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/gif_countdown/generator.rb', line 4

def width
  @width
end

Instance Method Details

#annotate_with_countdown(image:, seconds:) ⇒ Object 



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# File 'lib/gif_countdown/generator.rb', line 34

def annotate_with_countdown(image:, seconds:)
  this = self
  draw = Magick::Draw.new
  draw.gravity = Magick::NorthGravity
  boxwidth = (width - padding_x * 5) / 4.0

  parts = seconds_to_countdown(seconds)

  text_y = height / 2 + padding_x / 2
  x = padding_x
  image.annotate(draw, boxwidth, height / 2, x, 0, parts[:days]) { |img|
    img.pointsize = this.fontsize
    img.font_family = this.font
  }
  image.annotate(draw, boxwidth, height / 2, x, text_y, pluralize(parts[:days], :days)) { |img|
    img.pointsize = (this.fontsize * 0.7).round
    img.font_family = this.font
  }

  x = padding_x * 2 + boxwidth
  image.annotate(draw, boxwidth, height / 2, x, 0, parts[:hours]) { |img|
    img.pointsize = this.fontsize
    img.font_family = this.font
  }
  image.annotate(draw, boxwidth, height / 2, x, text_y, pluralize(parts[:hours], :hours)) { |img|
    img.pointsize = (this.fontsize * 0.7).round
    img.font_family = this.font
  }

  x = padding_x * 3 + boxwidth * 2
  image.annotate(draw, boxwidth, height / 2, x, 0, parts[:minutes]) { |img|
    img.pointsize = this.fontsize
    img.font_family = this.font
  }
  image.annotate(draw, boxwidth, height / 2, x, text_y, pluralize(parts[:minutes], :minutes)) { |img|
    img.pointsize = (this.fontsize * 0.7).round
    img.font_family = this.font
  }

  x = padding_x * 4 + boxwidth * 3
  image.annotate(draw, boxwidth, height / 2, x, 0, parts[:seconds]) { |img|
    img.pointsize = this.fontsize
    img.font_family = this.font
  }
  image.annotate(draw, boxwidth, height / 2, x, text_y, pluralize(parts[:seconds], :seconds)) { |img|
    img.pointsize = (this.fontsize * 0.7).round
    img.font_family = this.font
  }
end

#call ⇒ Object 



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# File 'lib/gif_countdown/generator.rb', line 16

def call
  gif = Magick::ImageList.new
  gif.delay = 100
  gif.ticks_per_second = 100

  @duration.times do |i|
    image = Magick::Image.new(width, height)
    image.delay = 100
    annotate_with_countdown(image: image, seconds: @distance_in_seconds - i)
    gif << image
  end
  gif.to_blob { |img| img.format = 'gif' }
end

#pluralize(count, key) ⇒ Object 



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# File 'lib/gif_countdown/generator.rb', line 30

def pluralize(count, key)
  I18n.t("gif_countdown.#{key}", count: count)
end

#seconds_to_countdown(seconds) ⇒ Object 



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# File 'lib/gif_countdown/generator.rb', line 84

def seconds_to_countdown(seconds)
  days = seconds / 1.day
  seconds -= days * 1.day.to_i

  hours = seconds / 1.hour
  seconds -= hours * 1.hour.to_i

  minutes = seconds / 1.minute
  seconds -= minutes * 1.minute.to_i

  {
    days: sprintf("%02d", days),
    hours: sprintf("%02d", hours),
    minutes: sprintf("%02d", minutes),
    seconds: sprintf("%02d", seconds)
  }
end