1 /* ScummVM - Graphic Adventure Engine
2  *
3  * ScummVM is the legal property of its developers, whose names
4  * are too numerous to list here. Please refer to the COPYRIGHT
5  * file distributed with this source distribution.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20  *
21  */
22 
23 #ifndef LASTEXPRESS_GRAPHICS_H
24 #define LASTEXPRESS_GRAPHICS_H
25 
26 #include "lastexpress/drawable.h"
27 
28 namespace LastExpress {
29 
30 class GraphicsManager {
31 public:
32 	enum BackgroundType {
33 		kBackgroundA,
34 		kBackgroundC,
35 		kBackgroundOverlay,
36 		kBackgroundInventory,
37 		kBackgroundAll
38 	};
39 
40 	GraphicsManager();
41 	~GraphicsManager();
42 
43 	// Update the screen
44 	void update();
45 
46 	// Signal a change to the screen, will cause the planes to be remerged
47 	void change();
48 
49 	// Clear some screen parts
50 	void clear(BackgroundType type);
51 	void clear(BackgroundType type, const Common::Rect &rect);
52 
53 	// FIXME this is there for animation until we change it to use the graphic surface here instead of its private ones.
54 	Graphics::Surface _screen;      // Actual screen surface
55 
56 	bool draw(Drawable *drawable, BackgroundType type, bool transition = false);
57 
58 private:
59 	Graphics::Surface _backgroundA; // Background A
60 	Graphics::Surface _backgroundC; // Background C
61 	Graphics::Surface _overlay;     // Overlay
62 	Graphics::Surface _inventory;   // Overlay
63 
64 	void mergePlanes();
65 	void updateScreen();
66 	Graphics::Surface *getSurface(BackgroundType type);
67 
68 	bool _changed;
69 };
70 
71 } // End of namespace LastExpress
72 
73 #endif // LASTEXPRESS_GRAPHICS_H
74