Directly alias sfBool instead of using a newtype wrapper

Fixes #163

Author: crumblingstatue

src/system/bool_.rs

@@ -4,15 +4,33 @@
 //!
 
 pub use self::clock::Clock;
-pub use self::bool_::Bool;
 pub use self::sleep::sleep;
 pub use self::time::Time;
 pub use self::vector2::{Vector2, Vector2f, Vector2i, Vector2u};
 pub use self::vector3::{Vector3, Vector3f, Vector3i};
+use csfml_system_sys::{sfBool, sfFalse, sfTrue};
+
+/// Boolean type used by CSFML.
+///
+/// Used in cases where we need directly pass a boolean value to CSFML, like in the case
+/// of `ContextSettings`.
+///
+/// # Example
+/// ```ignore
+/// use sfml::window::ContextSettings;
+/// use sfml::system;
+/// let mut context_settings = ContextSettings::default();
+/// context_settings.srgb_capable = system::TRUE;
+/// ```
+pub type Bool = sfBool;
+
+/// Boolean false value used by CSFML.
+pub const FALSE: Bool = sfFalse;
+/// Boolean `true` value used by CSFML.
+pub const TRUE: Bool = sfTrue;
 
 mod time;
 mod clock;
 mod sleep;
 mod vector2;
 mod vector3;
-mod bool_;

src/system/mod.rs

@@ -1,6 +1,6 @@
 use csfml_window_sys::sfContextSettings;
 use std::os::raw::c_uint;
-use system::Bool;
+use system::{Bool, FALSE};
 
 /// Structure defining the settings of the OpenGL context attached to a window.
 ///
@@ -81,15 +81,15 @@ impl Default for ContextSettings {
     ///
     /// ```
     /// # use sfml::window::ContextSettings;
-    /// # use sfml::system::Bool;
+    /// # use sfml::system;
     /// let values = ContextSettings {
     ///     depth_bits: 0,
     ///     stencil_bits: 0,
     ///     antialiasing_level: 0,
     ///     major_version: 1,
     ///     minor_version: 1,
     ///     attribute_flags: ContextSettings::ATTRIB_DEFAULT,
-    ///     srgb_capable: Bool::FALSE,
+    ///     srgb_capable: system::FALSE,
     /// };
     /// assert_eq!(ContextSettings::default(), values);
     /// ```
@@ -101,7 +101,7 @@ impl Default for ContextSettings {
             major_version: 1,
             minor_version: 1,
             attribute_flags: Self::ATTRIB_DEFAULT,
-            srgb_capable: Bool::FALSE,
+            srgb_capable: FALSE,
         }
     }
 }