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diff --git a/src/graphcoloring/graphs/vertex.hpp b/src/graphcoloring/graphs/vertex.hpp
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+++ b/src/graphcoloring/graphs/vertex.hpp
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+////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 Leo Tenenbaum
+// This file is part of GraphColoring.
+//
+// GraphColoring is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GraphColoring is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with GraphColoring.  If not, see <https://www.gnu.org/licenses/>.
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef GRAPHCOLORING_GRAPHS_VERTEX_H_
+#define GRAPHCOLORING_GRAPHS_VERTEX_H_
+
+#include "gui/colors.hpp"
+#include "gui/window.hpp"
+#include "colormenu.hpp"
+
+namespace graphcoloring {
+
+class Vertex {
+public:
+	static void ResetID();
+	Vertex(gui::Window* window, gui::Color color, int x, int y,
+		const gui::Position& viewport_position);
+	virtual ~Vertex();
+	void Lock();
+	void Unlock();
+	void SetDeleteCallback(std::function<void()> delete_callback);
+	bool operator==(const Vertex other) const;
+	gui::Color Color() const;
+	bool ChangeColor(gui::Color new_color);
+	int RenderX() const; // x-position when rendered
+	int RenderY() const;
+	bool IsHovering() const { return hovering; }; // Is the mouse hovering over this vertex?
+	void Render(int degree, bool filled = false, bool is_in_path = false,
+		bool is_last_vertex = false);
+	void RenderColorMenu();
+	static constexpr int VERTEX_RADIUS = 40;
+	int x;
+	int y;
+	const int id;
+	bool is_color_protected = false;
+	bool is_edge_protected = false;
+	bool is_delete_protected = false;
+	static int moving_vertex; // id of vertex that is being moved, or -1 if no vertex is being moved.
+private:
+	void SetClickCallback();
+	void SetMoveCallbacks();
+	void SetDeleteKeyCallback();
+	void MouseCallback(int mouse_x, int mouse_y);
+	void CheckIfMoving();
+	static int id_counter;
+	std::function<void()> delete_callback;
+	int mousedown_callback_id;
+	int m_keydown_callback_id;
+	int m_keyup_callback_id;
+	int x_keyup_callback_id;
+	gui::Window* const window;
+	gui::Color color;
+	bool hovering = false;
+	bool is_locked = false;
+	const gui::Position& viewport_position;
+	std::unique_ptr<ColorMenu> color_menu;
+};
+
+} // namespace graphcoloring
+
+#endif // GRAPHCOLORING_GRAPHS_VERTEX_H_