61 lines
1.6 KiB
Elixir
61 lines
1.6 KiB
Elixir
defmodule Pleroma.Upload.Filter.Mogrifun do
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@behaviour Pleroma.Upload.Filter
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@filters [
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{"implode", "1"},
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{"-raise", "20"},
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{"+raise", "20"},
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[{"-interpolate", "nearest"}, {"-virtual-pixel", "mirror"}, {"-spread", "5"}],
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"+polaroid",
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{"-statistic", "Mode 10"},
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{"-emboss", "0x1.1"},
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{"-emboss", "0x2"},
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{"-colorspace", "Gray"},
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"-negate",
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[{"-channel", "green"}, "-negate"],
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[{"-channel", "red"}, "-negate"],
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[{"-channel", "blue"}, "-negate"],
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{"+level-colors", "green,gold"},
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{"+level-colors", ",DodgerBlue"},
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{"+level-colors", ",Gold"},
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{"+level-colors", ",Lime"},
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{"+level-colors", ",Red"},
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{"+level-colors", ",DarkGreen"},
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{"+level-colors", "firebrick,yellow"},
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{"+level-colors", "'rgb(102,75,25)',lemonchiffon"},
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[{"fill", "red"}, {"tint", "40"}],
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[{"fill", "green"}, {"tint", "40"}],
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[{"fill", "blue"}, {"tint", "40"}],
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[{"fill", "yellow"}, {"tint", "40"}]
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]
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def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
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filter = Enum.random(@filters)
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file
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|> Mogrify.open()
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|> mogrify_filter(filter)
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|> Mogrify.save(in_place: true)
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:ok
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end
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def filter(_), do: :ok
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defp mogrify_filter(mogrify, [filter | rest]) do
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mogrify
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|> mogrify_filter(filter)
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|> mogrify_filter(rest)
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end
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defp mogrify_filter(mogrify, []), do: mogrify
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defp mogrify_filter(mogrify, {action, options}) do
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Mogrify.custom(mogrify, action, options)
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end
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defp mogrify_filter(mogrify, string) when is_binary(string) do
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Mogrify.custom(mogrify, string)
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end
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end
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