1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/* 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.
*
*/
#ifndef GRAPHICS_SCREEN_H
#define GRAPHICS_SCREEN_H
#include "graphics/managed_surface.h"
#include "graphics/pixelformat.h"
#include "common/list.h"
#include "common/rect.h"
namespace Graphics {
#define PALETTE_COUNT 256
#define PALETTE_SIZE (256 * 3)
class Screen : virtual public ManagedSurface {
private:
/**
* List of affected areas of the screen
*/
Common::List<Common::Rect> _dirtyRects;
private:
/**
* Merges together overlapping dirty areas of the screen
*/
void mergeDirtyRects();
/**
* Returns the union of two dirty area rectangles
*/
bool unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2);
protected:
/**
* Adds a rectangle to the list of modified areas of the screen during the
* current frame
*/
virtual void addDirtyRect(const Common::Rect &r);
public:
Screen();
Screen(int width, int height);
Screen(int width, int height, PixelFormat pixelFormat);
/**
* Returns true if there are any pending screen updates
*/
bool isDirty() const { return _dirtyRects.empty(); }
/**
* Makes the whole screen dirty
*/
void makeAllDirty();
/**
* Clear the current dirty rects list
*/
virtual void clearDirtyRects() { _dirtyRects.clear(); }
/**
* Updates the screen by copying any affected areas to the system
*/
virtual void update();
/**
* Return the currently active palette
*/
void getPalette(byte palette[PALETTE_SIZE]);
/**
* Return a portion of the currently active palette
*/
void getPalette(byte *palette, uint start, uint num);
/**
* Set the palette
*/
void setPalette(const byte palette[PALETTE_SIZE]);
/**
* Set a subsection of the palette
*/
void setPalette(const byte *palette, uint start, uint num);
/**
* Clears the current palette, setting all entries to black
*/
void clearPalette();
};
} // End of namespace Graphics
#endif
|
