Rename Display to Window.

It makes more sense to be consistent and always call it window.

include/Spectre/Window/DisplayMode.h

@@ -0,0 +1,48 @@
+
+#ifndef SPECTRE_DISPLAY_DISPLAYMODE_H
+#define SPECTRE_DISPLAY_DISPLAYMODE_H
+
+#include <vector>
+
+namespace sp {
+
+class DisplayMode
+{
+public :
+	DisplayMode();
+	DisplayMode(unsigned int width, unsigned int height, unsigned int bpp = 32);
+
+	static std::vector<DisplayMode> getFullscreenModes();
+
+	static DisplayMode getDesktopMode();
+
+	// Returns true if width hight and bpp are not set (eg. zero)
+	// useful to determine if a DisplayMode object is set or not.
+	// this is equal to:
+	//   DisplayMode a;
+	//   if (a == DisplayMode()) {
+	//		// empty
+	//   }
+	bool empty() const;
+
+	inline bool operator==(const DisplayMode& other)
+	{
+		return width == other.width
+			&& height == other.height
+			&& bpp == other.bpp;
+	}
+
+	inline bool operator!=(const DisplayMode& other)
+	{
+		return !(*this == other);
+	}
+
+public :
+	unsigned int	width;
+	unsigned int	height;
+	unsigned int	bpp;	/* Bits per pixel. */
+};
+
+} // namespace sp
+
+#endif /* SPECTRE_DISPLAY_DISPLAYMODE_H */