Initial commit, read more

This commit includes:

* Button
* TextLine
* TextBox
* TextField

It also includes these dependencies:

* Image
* BoundingBox

button.hpp

@@ -0,0 +1,67 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "image.hpp"
+
+#include "SDL2/SDL_ttf.h"
+
+#include <string>
+
+class Button {
+public:
+	enum State {
+		IDLE = 0, HOVER = 1, PRESSED = 2, RELEASED = 3
+	};
+
+	//methods
+	Button() = default;
+	~Button() = default;
+
+	void DrawTo(SDL_Renderer*);
+
+	//setup
+	void SetBackgroundTexture(SDL_Renderer*, SDL_Texture*);
+	void SetText(SDL_Renderer*, TTF_Font*, SDL_Color, std::string);
+
+	//capture input
+	State MouseMotion(SDL_MouseMotionEvent const&);
+	State MouseButtonDown(SDL_MouseButtonEvent const&);
+	State MouseButtonUp(SDL_MouseButtonEvent const&);
+
+	//states
+	void SetState(State); //TODO: idle, busy or disabled
+	State GetState();
+
+	//accessors & mutators
+	int SetX(int x);
+	int SetY(int y);
+	int GetX() const;
+	int GetY() const;
+
+protected:
+	bool CheckBounds(int x, int y);
+
+	Image image;
+	State state = State::IDLE;
+	int posX = 0, posY = 0;
+};