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diff --git a/src/Configuration.hpp b/src/Configuration.hpp
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+++ b/src/Configuration.hpp
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+/* This file is part of Patchage.
+ * Copyright 2007-2014 David Robillard <http://drobilla.net>
+ *
+ * Patchage 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.
+ *
+ * Patchage 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 details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Patchage.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PATCHAGE_CONFIGURATION_HPP
+#define PATCHAGE_CONFIGURATION_HPP
+
+#include <stdint.h>
+
+#include <string>
+#include <list>
+#include <map>
+
+#include <boost/optional.hpp>
+
+enum ModuleType { Input, Output, InputOutput };
+
+enum PortType { JACK_AUDIO, JACK_MIDI, ALSA_MIDI, JACK_OSC, JACK_CV };
+
+#define N_PORT_TYPES 5
+
+struct Coord {
+	Coord(double x_=0, double y_=0) : x(x_), y(y_) {}
+	double x;
+	double y;
+};
+
+class Configuration
+{
+public:
+	Configuration();
+
+	void load();
+	void save();
+
+	bool get_module_location(const std::string& name, ModuleType type, Coord& loc);
+	void set_module_location(const std::string& name, ModuleType type, Coord loc);
+
+	void set_module_split(const std::string& name, bool split);
+	bool get_module_split(const std::string& name, bool default_val) const;
+
+	float get_zoom() const               { return _zoom; }
+	void  set_zoom(float zoom)           { _zoom = zoom; }
+	float get_font_size() const          { return _font_size; }
+	void  set_font_size(float font_size) { _font_size = font_size; }
+
+	float get_show_toolbar() const             { return _show_toolbar; }
+	void  set_show_toolbar(float show_toolbar) { _show_toolbar = show_toolbar; }
+
+	float get_sprung_layout() const              { return _sprung_layout; }
+	void  set_sprung_layout(float sprung_layout) { _sprung_layout = sprung_layout; }
+
+	bool  get_show_messages() const             { return _show_messages; }
+	void  set_show_messages(bool show_messages) { _show_messages = show_messages; }
+
+	bool  get_sort_ports() const          { return _sort_ports; }
+	void  set_sort_ports(bool sort_ports) { _sort_ports = sort_ports; }
+
+	int  get_messages_height() const          { return _messages_height; }
+	void set_messages_height(int height) { _messages_height = height; }
+
+	uint32_t get_port_color(PortType type) const { return _port_colors[type]; }
+	void     set_port_color(PortType type, uint32_t rgba) {
+		_port_colors[type] = rgba;
+	}
+
+	Coord get_window_location()          { return _window_location; }
+	void  set_window_location(Coord loc) { _window_location = loc; }
+	Coord get_window_size()              { return _window_size; }
+	void  set_window_size(Coord size)    { _window_size = size; }
+
+private:
+	struct ModuleSettings {
+		ModuleSettings(bool s=false) : split(s) {}
+		boost::optional<Coord> input_location;
+		boost::optional<Coord> output_location;
+		boost::optional<Coord> inout_location;
+		bool                   split;
+	};
+
+	std::map<std::string, ModuleSettings> _module_settings;
+
+	uint32_t _default_port_colors[N_PORT_TYPES];
+	uint32_t _port_colors[N_PORT_TYPES];
+
+	Coord _window_location;
+	Coord _window_size;
+	float _zoom;
+	float _font_size;
+	int   _messages_height;
+	bool  _show_toolbar;
+	bool  _sprung_layout;
+	bool  _show_messages;
+	bool  _sort_ports;
+};
+
+#endif // PATCHAGE_CONFIGURATION_HPP