added default color support and updated the color example

README.md

@@ -79,3 +79,4 @@ $ crystal run examples/scroll.cr
 
 - (https://github.com/jreinert) Joakim Reinert - creator, maintainer
 - (https://github.com/SamualLB) Samual Black - maintainer
+- (https://github.com/data-niklas) Niklas Loeser - contributor

examples/colors.cr

@@ -10,6 +10,7 @@ unless NCurses.has_colors?
   exit(1)
 end
 
+NCurses.default_colors
 NCurses.start_color
 
 NCurses.init_color_pair(1, NCurses::Color::Red, NCurses::Color::Green)

shard.yml

@@ -1,9 +1,11 @@
 name: ncurses
+
 version: 1.1.0
 
 authors:
   - Joakim Reinert <[email protected]>
   - Samual Black <[email protected]>
+  - Niklas Loeser <[email protected]>
 
 crystal: 1.0.0
 

src/lib_ncurses.cr

@@ -117,6 +117,7 @@ lib LibNCurses
   fun can_change_color : Bool
   fun init_color(slot : LibC::Short, red : LibC::Short, green : LibC::Short, blue : LibC::Short) : LibC::Int
   fun init_pair(slot : LibC::Short, foreground : LibC::Short, background : LibC::Short) : LibC::Int
+  fun use_default_colors()
 
   # Output options
   fun clearok(window : Window, bf : Bool) : LibC::Int

src/ncurses.cr

@@ -249,6 +249,18 @@ module NCurses
     raise "init_pair error" if LibNCurses.init_pair(slot.to_i16, foreground.to_i16, background.to_i16) == ERR
   end
 
+
+  # Use the default terminal colors
+  # Takes no arguments and has no result
+  def use_default_colors
+    LibNCurses.use_default_colors
+  end
+
+  # Alias for use_default_colors
+  def default_colors
+    use_default_colors
+  end
+
   #
   # ## Other
   #