1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2 /* 3 * This file is part of the LibreOffice project. 4 * 5 * This Source Code Form is subject to the terms of the Mozilla Public 6 * License, v. 2.0. If a copy of the MPL was not distributed with this 7 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 8 * 9 * This file incorporates work covered by the following license notice: 10 * 11 * Licensed to the Apache Software Foundation (ASF) under one or more 12 * contributor license agreements. See the NOTICE file distributed 13 * with this work for additional information regarding copyright 14 * ownership. The ASF licenses this file to you under the Apache 15 * License, Version 2.0 (the "License"); you may not use this file 16 * except in compliance with the License. You may obtain a copy of 17 * the License at http://www.apache.org/licenses/LICENSE-2.0 . 18 */ 19 20 #ifndef INCLUDED_CPPCANVAS_COLOR_HXX 21 #define INCLUDED_CPPCANVAS_COLOR_HXX 22 23 #include <sal/types.h> 24 25 /* Definition of Color class */ 26 27 namespace cppcanvas 28 { 29 /** Color in the sRGB color space, plus alpha channel 30 31 The four bytes of the sal_uInt32 are allocated as follows 32 to the color channels and alpha: 0xRRGGBBAA. 33 */ 34 typedef sal_uInt32 IntSRGBA; 35 getRed(IntSRGBA nCol)36 inline sal_uInt8 getRed( IntSRGBA nCol ) 37 { 38 return static_cast<sal_uInt8>( (nCol&0xFF000000U) >> 24U ); 39 } 40 getGreen(IntSRGBA nCol)41 inline sal_uInt8 getGreen( IntSRGBA nCol ) 42 { 43 return static_cast<sal_uInt8>( (nCol&0x00FF0000U) >> 16U ); 44 } 45 getBlue(IntSRGBA nCol)46 inline sal_uInt8 getBlue( IntSRGBA nCol ) 47 { 48 return static_cast<sal_uInt8>( (nCol&0x0000FF00U) >> 8U ); 49 } 50 getAlpha(IntSRGBA nCol)51 inline sal_uInt8 getAlpha( IntSRGBA nCol ) 52 { 53 return static_cast<sal_uInt8>( nCol&0x000000FFU ); 54 } 55 makeColor(sal_uInt8 nRed,sal_uInt8 nGreen,sal_uInt8 nBlue,sal_uInt8 nAlpha)56 inline IntSRGBA makeColor( sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue, sal_uInt8 nAlpha ) 57 { 58 return (nRed << 24U)|(nGreen << 16U)|(nBlue << 8U)|nAlpha; 59 } 60 makeColorARGB(sal_uInt8 nAlpha,sal_uInt8 nRed,sal_uInt8 nGreen,sal_uInt8 nBlue)61 inline sal_Int32 makeColorARGB( sal_uInt8 nAlpha, sal_uInt8 nRed, sal_uInt8 nGreen, sal_uInt8 nBlue) 62 { 63 return (nAlpha << 24U)|(nRed << 16U)|(nGreen << 8U)|nBlue; 64 } 65 66 } 67 68 #endif // INCLUDED_CPPCANVAS_COLOR_HXX 69 70 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 71