1 files changed, 88 insertions, 0 deletions
diff --git a/engines/sci/gui/gui_screen.h b/engines/sci/gui/gui_screen.h
new file mode 100644
index 0000000000..242948ed8f
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+++ b/engines/sci/gui/gui_screen.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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+namespace Sci {
+
+#define SCI_SCREEN_MAXHEIGHT 400
+
+#define SCI_SCREEN_MASK_VISUAL   1
+#define SCI_SCREEN_MASK_PRIORITY 2
+#define SCI_SCREEN_MASK_CONTROL  4
+#define SCI_SCREEN_MASK_ALL      SCI_SCREEN_MASK_VISUAL|SCI_SCREEN_MASK_PRIORITY|SCI_SCREEN_MASK_CONTROL
+#define SCI_SCREEN_MASK_DITHERED 128
+
+class SciGUIscreen {
+public:
+	SciGUIscreen(OSystem *system, EngineState *state);
+	~SciGUIscreen();
+
+	void init(void);
+	byte *initScreen(uint16 pixelCount);
+
+	void UpdateWhole();
+
+	byte GetDrawingMask(byte color, byte prio, byte control);
+	void Put_Pixel(int x, int y, byte drawMask, byte color, byte prio, byte control);
+	byte Get_Visual(int x, int y);
+	byte Get_Priority(int x, int y);
+	byte Get_Control(int x, int y);
+	byte IsFillMatch(int16 x, int16 y, byte drawMask, byte t_color, byte t_pri, byte t_con);
+
+	int BitsGetDataSize(Common::Rect rect, byte mask);
+	void BitsSave(Common::Rect rect, byte mask, byte *memoryPtr);
+	void BitsRestore(byte *memoryPtr);
+
+	sciPalette _sysPalette;
+
+	uint16 _width;
+	uint16 _height;
+	uint _pixels;
+	uint16 _displayWidth;
+	uint16 _displayHeight;
+	uint _displayPixels;
+	byte _bytesPerDisplayPixel;
+
+private:
+	void BitsRestoreScreen(Common::Rect rect, byte *&memoryPtr, byte *screen);
+	void BitsSaveScreen(Common::Rect rect, byte *screen, byte *&memoryPtr);
+
+	OSystem *_system;
+	EngineState *_s;
+
+	uint16 _baseTable[SCI_SCREEN_MAXHEIGHT];
+	uint16 _baseDisplayTable[SCI_SCREEN_MAXHEIGHT];
+
+	// these screens have the real resolution of the game engine (320x200 for SCI0/SCI1/SCI11 games, 640x480 for SCI2 games)
+	//  SCI0 games will be dithered in here at any time
+	byte *_visualScreen;
+	byte *_priorityScreen;
+	byte *_controlScreen;
+
+	// this screen is the one that is actually displayed to the user. It may be 640x480 for japanese SCI1 games
+	//  SCI0 games may be undithered in here. Only read from this buffer for Save/ShowBits usage.
+	byte *_displayScreen;
+};
+
+} // end of namespace Sci