Added color history singleton class.

glabels/ColorHistory.h

@@ -0,0 +1,84 @@
+/*  ColorHistory.h
+ *
+ *  Copyright (C) 2014  Jim Evins <evins@snaught.com>
+ *
+ *  This file is part of gLabels-qt.
+ *
+ *  gLabels-qt 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.
+ *
+ *  gLabels-qt 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 gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef glabels_ColorHistory_h
+#define glabels_ColorHistory_h
+
+#include <QObject>
+#include <QColor>
+
+
+namespace glabels
+{
+
+	///
+	/// Barcode Backends Database
+	///
+	class ColorHistory : public QObject
+	{
+		Q_OBJECT
+
+	public:
+		static const int MAX_COLORS = 10;
+
+		/////////////////////////////////
+		// Life Cycle
+		/////////////////////////////////
+	private:
+		ColorHistory();
+
+	public:
+		static ColorHistory* instance();
+
+
+		/////////////////////////////////
+		// Signals
+		/////////////////////////////////
+	signals:
+		void changed();
+
+
+		/////////////////////////////////
+		// Public Methods
+		/////////////////////////////////
+	public:
+		void   addColor( const QColor &color );
+		QColor getColor( int i );
+
+
+		/////////////////////////////////
+		// Private Methods
+		/////////////////////////////////
+	private:
+		void readColorArray( QColor array[MAX_COLORS], int& n );
+		void writeColorArray( const QColor array[MAX_COLORS], int n );
+
+
+		/////////////////////////////////
+		// Private Members
+		/////////////////////////////////
+	private:
+
+	};
+
+}
+
+
+#endif // glabels_ColorHistory_h