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engines/saga2/vbacksav.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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
+ * aint32 with this program; if not, write to the Free Software
+ *
+ *
+ * Based on the original sources
+ *   Faery Tale II -- The Halls of the Dead
+ *   (c) 1993-1996 The Wyrmkeep Entertainment Co.
+ */
+
+#ifndef SAGA2_VBACKSAV_H
+#define SAGA2_VBACKSAV_H
+
+#include "saga2/vdraw.h"
+
+namespace Saga2 {
+
+//  Manages a backsave buffer for menus, windows, and other
+//  "things that appear in fron of other things"
+
+class gBackSave : private gPort {
+	Rect16          _savedRegion;        // extent of saved region
+	gPixelMap       _savedPixels;        // buffer of saved pixels
+	bool            _saved;              // true = saved.
+
+public:
+	gBackSave(const Rect16 &extent);
+	virtual ~gBackSave();
+
+	void save(gDisplayPort &port);
+	void restore(gDisplayPort &port);
+	void setPos(Point16 pos) {
+		_savedRegion.x = pos.x;
+		_savedRegion.y = pos.y;
+	}
+	bool valid() {
+		return _savedPixels._data != NULL;
+	}
+};
+
+} // end of namespace Saga2
+
+#endif