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[WIP] Define ColorDefault and pass it to ColorPair#init #8

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[WIP] Define ColorDefault and pass it to ColorPair#init #8

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20 changes: 17 additions & 3 deletions src/ncurses/attribute.cr
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,29 @@ require "./libncurses"

module NCurses
alias Attribute = LibNCurses::Attribute

struct ColorDefault
end

alias Color = LibNCurses::Color

struct ColorPair
def initialize(@id : Int32)
end

def init(fg : Color, bg : Color)
if LibNCurses.init_pair(@id, fg.value, bg.value) == LibNCurses::Result::ERR
raise "ncurses failure: init_pair"
def init(fg : Color | ColorDefault, bg : Color | ColorDefault)
fg = if fg.is_a?(Color)
fg.value
else
-1
end
bg = if bg.is_a?(Color)
bg.value
else
-1
end
if LibNCurses.init_pair(@id, fg, bg) == LibNCurses::Result::ERR
raise "ncurses failure: init_pair, #{@id}, #{fg}, #{bg}"
end
self
end
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