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39 lines
549 B
Ruby
39 lines
549 B
Ruby
class Snapshot < Grid
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def self.build(data)
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data = data.map { |cells|
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cells.map { |cell|
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Cell.new(cell[0], Brush.new(cell[1]))
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}
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}
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new(data)
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end
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def thumbnail(w, h)
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x = 0
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y = height - h - trailing_empty_lines
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y = 0 if y < 0
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crop(x, y, w, h)
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end
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private
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def trailing_empty_lines
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n = 0
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(height - 1).downto(0) do |y|
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break unless line_empty?(y)
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n += 1
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end
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n
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end
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def line_empty?(y)
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lines[y].empty? || lines[y].all? { |cell| cell.empty? }
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end
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end
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