diff -r a74f2ff353b8 -r b376645315ab src/configuration.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/configuration.cc	Sat Mar 29 05:26:10 2014 +0200
@@ -0,0 +1,179 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013, 2014 Santeri Piippo
+ *
+ *  This program 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.
+ *
+ *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *  =====================================================================
+ *
+ *  config.cxx: Configuration management. I don't like how unsafe QSettings
+ *  is so this implements a type-safer and identifer-safer wrapping system of
+ *  configuration variables. QSettings is used underlyingly, this is a matter
+ *  of interface.
+ */
+
+#include <errno.h>
+#include <QDir>
+#include <QTextStream>
+#include <QSettings>
+#include "main.h"
+#include "configuration.h"
+#include "miscallenous.h"
+#include "mainWindow.h"
+#include "ldDocument.h"
+
+#ifdef _WIN32
+# define EXTENSION ".ini"
+#else
+# define EXTENSION ".cfg"
+#endif // _WIN32
+
+Config*							g_configPointers[MAX_CONFIG];
+static int						g_cfgPointerCursor = 0;
+static QMap<QString, Config*>	g_configsByName;
+static QList<Config*>			g_configs;
+
+// =============================================================================
+// Get the QSettings object.
+// =============================================================================
+static QSettings* getSettingsObject()
+{
+	QString path = qApp->applicationDirPath() + "/" UNIXNAME EXTENSION;
+	return new QSettings (path, QSettings::IniFormat);
+}
+
+Config::Config (QString name) :
+	m_name (name) {}
+
+// =============================================================================
+// Load the configuration from file
+// =============================================================================
+bool Config::load()
+{
+	QSettings* settings = getSettingsObject();
+	print ("config::load: Loading configuration file from %1\n", settings->fileName());
+
+	for (Config* cfg : g_configPointers)
+	{
+		if (!cfg)
+			break;
+
+		QVariant val = settings->value (cfg->name(), cfg->getDefaultAsVariant());
+		cfg->loadFromVariant (val);
+		g_configsByName[cfg->name()] = cfg;
+		g_configs << cfg;
+	}
+
+	settings->deleteLater();
+	return true;
+}
+
+// =============================================================================
+//
+// Save the configuration to disk
+//
+bool Config::save()
+{
+	QSettings* settings = getSettingsObject();
+
+	for (Config* cfg : g_configs)
+	{
+		if (!cfg->isDefault())
+			settings->setValue (cfg->name(), cfg->toVariant());
+		else
+			settings->remove (cfg->name());
+	}
+
+	settings->sync();
+	print ("Configuration saved to %1.\n", settings->fileName());
+	settings->deleteLater();
+	return true;
+}
+
+// =============================================================================
+// Reset configuration to defaults.
+// =============================================================================
+void Config::reset()
+{
+	for (Config* cfg : g_configs)
+		cfg->resetValue();
+}
+
+// =============================================================================
+// Where is the configuration file located at?
+// =============================================================================
+QString Config::filepath (QString file)
+{
+	return Config::dirpath() + DIRSLASH + file;
+}
+
+// =============================================================================
+// Directory of the configuration file.
+// =============================================================================
+QString Config::dirpath()
+{
+	QSettings* cfg = getSettingsObject();
+	return dirname (cfg->fileName());
+}
+
+// =============================================================================
+// We cannot just add config objects to a list or vector because that would rely
+// on the vector's c-tor being called before the configs' c-tors. With global
+// variables we cannot assume that, therefore we need to use a C-style array here.
+// =============================================================================
+void Config::addToArray (Config* ptr)
+{
+	if (g_cfgPointerCursor == 0)
+		memset (g_configPointers, 0, sizeof g_configPointers);
+
+	assert (g_cfgPointerCursor < MAX_CONFIG);
+	g_configPointers[g_cfgPointerCursor++] = ptr;
+}
+
+// =============================================================================
+// =============================================================================
+template<class T> T* getConfigByName (QString name, Config::Type type)
+{
+	auto it = g_configsByName.find (name);
+
+	if (it == g_configsByName.end())
+		return null;
+
+	Config* cfg = it.value();
+
+	if (cfg->getType() != type)
+	{
+		fprint (stderr, "type of %1 is %2, not %3\n", name, cfg->getType(), type);
+		abort();
+	}
+
+	return reinterpret_cast<T*> (cfg);
+}
+
+// =============================================================================
+// =============================================================================
+#undef IMPLEMENT_CONFIG
+
+#define IMPLEMENT_CONFIG(NAME)										\
+	NAME##Config* NAME##Config::getByName (QString name)			\
+	{																\
+		return getConfigByName<NAME##Config> (name, E##NAME##Type);	\
+	}
+
+IMPLEMENT_CONFIG (Int)
+IMPLEMENT_CONFIG (String)
+IMPLEMENT_CONFIG (Bool)
+IMPLEMENT_CONFIG (Float)
+IMPLEMENT_CONFIG (List)
+IMPLEMENT_CONFIG (KeySequence)
+IMPLEMENT_CONFIG (Vertex)