blob: 50209ec2ce47f63c6e3f9c0819a091808bd7f00e (
plain)
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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <sal/types.h>
#include <basegfx/color/bcolor.hxx>
namespace basegfx
{
class BPixel final
{
union
{
struct
{
unsigned mnR : 8; // red intensity
unsigned mnG : 8; // green intensity
unsigned mnB : 8; // blue intensity
unsigned mnA : 8; // opacity, 0 == full transparence
} maRGBA;
struct
{
unsigned mnValue : 32; // all values
} maCombinedRGBA;
} maPixelUnion;
public:
BPixel()
{
maPixelUnion.maCombinedRGBA.mnValue = 0;
}
// use explicit here to make sure everyone knows what he is doing. Values range from
// 0..255 integer here.
explicit BPixel(sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue, sal_uInt8 nAlpha)
{
maPixelUnion.maRGBA.mnR = nRed;
maPixelUnion.maRGBA.mnG = nGreen;
maPixelUnion.maRGBA.mnB = nBlue;
maPixelUnion.maRGBA.mnA = nAlpha;
}
// constructor from BColor which uses double precision color, so change it
// to local integer format. It will also be clamped here.
BPixel(const BColor& rColor, sal_uInt8 nAlpha)
{
maPixelUnion.maRGBA.mnR = sal_uInt8((rColor.getRed() * 255.0) + 0.5);
maPixelUnion.maRGBA.mnG = sal_uInt8((rColor.getGreen() * 255.0) + 0.5);
maPixelUnion.maRGBA.mnB = sal_uInt8((rColor.getBlue() * 255.0) + 0.5);
maPixelUnion.maRGBA.mnA = nAlpha;
}
// data access read
sal_uInt8 getRed() const { return maPixelUnion.maRGBA.mnR; }
sal_uInt8 getGreen() const { return maPixelUnion.maRGBA.mnG; }
sal_uInt8 getBlue() const { return maPixelUnion.maRGBA.mnB; }
sal_uInt8 getAlpha() const { return maPixelUnion.maRGBA.mnA; }
// data access write
void setRed(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnR = nNew; }
void setGreen(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnG = nNew; }
void setBlue(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnB = nNew; }
void setAlpha(sal_uInt8 nNew) { maPixelUnion.maRGBA.mnA = nNew; }
// comparators
bool operator==( const BPixel& rPixel ) const
{
return (rPixel.maPixelUnion.maCombinedRGBA.mnValue == maPixelUnion.maCombinedRGBA.mnValue);
}
bool operator!=( const BPixel& rPixel ) const
{
return (rPixel.maPixelUnion.maCombinedRGBA.mnValue != maPixelUnion.maCombinedRGBA.mnValue);
}
};
} // end of namespace basegfx
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
