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authorVladimir Glazounov <vg@openoffice.org>2008-08-19 22:51:21 +0000
committerVladimir Glazounov <vg@openoffice.org>2008-08-19 22:51:21 +0000
commitd7640e0135d2a69eddf1196e34c86bca62ab0e75 (patch)
tree01321764591f40ca4208a37c86cfd426b2e922da /basegfx/inc/basegfx/pixel
parent63caa885371bf27663e3f72c3e7d1507412b0354 (diff)
INTEGRATION: CWS aw033 (1.1.2); FILE ADDED
2008/08/19 16:43:44 cl 1.1.2.3: fixed license files 2008/05/27 14:08:42 aw 1.1.2.2: #i39532# changes DEV300 m12 resync corrections 2006/05/12 11:28:09 aw 1.1.2.1: code for primitive support
Diffstat (limited to 'basegfx/inc/basegfx/pixel')
-rw-r--r--basegfx/inc/basegfx/pixel/bpixel.hxx226
1 files changed, 226 insertions, 0 deletions
diff --git a/basegfx/inc/basegfx/pixel/bpixel.hxx b/basegfx/inc/basegfx/pixel/bpixel.hxx
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+++ b/basegfx/inc/basegfx/pixel/bpixel.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: bpixel.hxx,v $
+ *
+ * $Revision: 1.2 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _BGFX_PIXEL_BPIXEL_HXX
+#define _BGFX_PIXEL_BPIXEL_HXX
+
+#include <sal/types.h>
+#include <basegfx/numeric/ftools.hxx>
+#include <basegfx/color/bcolor.hxx>
+
+//////////////////////////////////////////////////////////////////////////////
+// predeclarations
+
+//////////////////////////////////////////////////////////////////////////////
+
+namespace basegfx
+{
+ class BPixel
+ {
+ protected:
+ union
+ {
+ struct
+ {
+ // bitfield
+ unsigned mnR : 8; // red intensity
+ unsigned mnG : 8; // green intensity
+ unsigned mnB : 8; // blue intensity
+ unsigned mnO : 8; // opacity, 0 == full transparence
+ } maRGBO;
+
+ struct
+ {
+ // bitfield
+ unsigned mnValue : 32; // all values
+ } maCombinedRGBO;
+ };
+
+ public:
+ BPixel()
+ {
+ maCombinedRGBO.mnValue = 0L;
+ }
+
+ // 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 nOpacity)
+ {
+ maRGBO.mnR = nRed;
+ maRGBO.mnG = nGreen;
+ maRGBO.mnB = nBlue;
+ maRGBO.mnO = nOpacity;
+ }
+
+ // 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 nOpacity)
+ {
+ maRGBO.mnR = sal_uInt8((rColor.getRed() * 255.0) + 0.5);
+ maRGBO.mnG = sal_uInt8((rColor.getGreen() * 255.0) + 0.5);
+ maRGBO.mnB = sal_uInt8((rColor.getBlue() * 255.0) + 0.5);
+ maRGBO.mnO = nOpacity;
+ }
+
+ // copy constructor
+ BPixel(const BPixel& rPixel)
+ {
+ maCombinedRGBO.mnValue = rPixel.maCombinedRGBO.mnValue;
+ }
+
+ ~BPixel()
+ {}
+
+ // assignment operator
+ BPixel& operator=( const BPixel& rPixel )
+ {
+ maCombinedRGBO.mnValue = rPixel.maCombinedRGBO.mnValue;
+ return *this;
+ }
+
+ // data access read
+ sal_uInt8 getRed() const { return maRGBO.mnR; }
+ sal_uInt8 getGreen() const { return maRGBO.mnG; }
+ sal_uInt8 getBlue() const { return maRGBO.mnB; }
+ sal_uInt8 getOpacity() const { return maRGBO.mnO; }
+ sal_uInt32 getRedGreenBlueOpacity() const { return maCombinedRGBO.mnValue; }
+
+ // data access write
+ void setRed(sal_uInt8 nNew) { maRGBO.mnR = nNew; }
+ void setGreen(sal_uInt8 nNew) { maRGBO.mnG = nNew; }
+ void setBlue(sal_uInt8 nNew) { maRGBO.mnB = nNew; }
+ void setOpacity(sal_uInt8 nNew) { maRGBO.mnO = nNew; }
+ void setRedGreenBlueOpacity(sal_uInt32 nRedGreenBlueOpacity) { maCombinedRGBO.mnValue = nRedGreenBlueOpacity; }
+ void setRedGreenBlue(sal_uInt8 nR, sal_uInt8 nG, sal_uInt8 nB) { maRGBO.mnR = nR; maRGBO.mnG = nG; maRGBO.mnB = nB; }
+
+ // comparators
+ bool isInvisible() const { return (0 == maRGBO.mnO); }
+ bool isVisible() const { return (0 != maRGBO.mnO); }
+ bool isEmpty() const { return isInvisible(); }
+ bool isUsed() const { return isVisible(); }
+
+ bool operator==( const BPixel& rPixel ) const
+ {
+ return (rPixel.maCombinedRGBO.mnValue == maCombinedRGBO.mnValue);
+ }
+
+ bool operator!=( const BPixel& rPixel ) const
+ {
+ return (rPixel.maCombinedRGBO.mnValue != maCombinedRGBO.mnValue);
+ }
+
+ // empty element
+ static const BPixel& getEmptyBPixel();
+ };
+
+ //////////////////////////////////////////////////////////////////////////
+ // external operators
+
+ inline BPixel minimum(const BPixel& rTupA, const BPixel& rTupB)
+ {
+ BPixel aMin(
+ (rTupB.getRed() < rTupA.getRed()) ? rTupB.getRed() : rTupA.getRed(),
+ (rTupB.getGreen() < rTupA.getGreen()) ? rTupB.getGreen() : rTupA.getGreen(),
+ (rTupB.getBlue() < rTupA.getBlue()) ? rTupB.getBlue() : rTupA.getBlue(),
+ (rTupB.getOpacity() < rTupA.getOpacity()) ? rTupB.getOpacity() : rTupA.getOpacity());
+ return aMin;
+ }
+
+ inline BPixel maximum(const BPixel& rTupA, const BPixel& rTupB)
+ {
+ BPixel aMax(
+ (rTupB.getRed() > rTupA.getRed()) ? rTupB.getRed() : rTupA.getRed(),
+ (rTupB.getGreen() > rTupA.getGreen()) ? rTupB.getGreen() : rTupA.getGreen(),
+ (rTupB.getBlue() > rTupA.getBlue()) ? rTupB.getBlue() : rTupA.getBlue(),
+ (rTupB.getOpacity() > rTupA.getOpacity()) ? rTupB.getOpacity() : rTupA.getOpacity());
+ return aMax;
+ }
+
+ inline BPixel interpolate(const BPixel& rOld1, const BPixel& rOld2, double t)
+ {
+ if(rOld1 == rOld2)
+ {
+ return rOld1;
+ }
+ else if(0.0 >= t)
+ {
+ return rOld1;
+ }
+ else if(1.0 <= t)
+ {
+ return rOld2;
+ }
+ else
+ {
+ const sal_uInt32 nFactor(fround(256.0 * t));
+ const sal_uInt32 nNegFac(256L - nFactor);
+ return BPixel(
+ (sal_uInt8)(((sal_uInt32)rOld1.getRed() * nNegFac + (sal_uInt32)rOld2.getRed() * nFactor) >> 8L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getGreen() * nNegFac + (sal_uInt32)rOld2.getGreen() * nFactor) >> 8L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getBlue() * nNegFac + (sal_uInt32)rOld2.getBlue() * nFactor) >> 8L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getOpacity() * nNegFac + (sal_uInt32)rOld2.getOpacity() * nFactor) >> 8L));
+ }
+ }
+
+ inline BPixel average(const BPixel& rOld1, const BPixel& rOld2)
+ {
+ if(rOld1 == rOld2)
+ {
+ return rOld1;
+ }
+ else
+ {
+ return BPixel(
+ (sal_uInt8)(((sal_uInt32)rOld1.getRed() + (sal_uInt32)rOld2.getRed()) >> 1L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getGreen() + (sal_uInt32)rOld2.getGreen()) >> 1L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getBlue() + (sal_uInt32)rOld2.getBlue()) >> 1L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getOpacity() + (sal_uInt32)rOld2.getOpacity()) >> 1L));
+ }
+ }
+
+ inline BPixel average(const BPixel& rOld1, const BPixel& rOld2, const BPixel& rOld3)
+ {
+ if(rOld1 == rOld2 && rOld2 == rOld3)
+ {
+ return rOld1;
+ }
+ else
+ {
+ return BPixel(
+ (sal_uInt8)(((sal_uInt32)rOld1.getRed() + (sal_uInt32)rOld2.getRed() + (sal_uInt32)rOld3.getRed()) / 3L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getGreen() + (sal_uInt32)rOld2.getGreen() + (sal_uInt32)rOld3.getGreen()) / 3L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getBlue() + (sal_uInt32)rOld2.getBlue() + (sal_uInt32)rOld3.getBlue()) / 3L),
+ (sal_uInt8)(((sal_uInt32)rOld1.getOpacity() + (sal_uInt32)rOld2.getOpacity() + (sal_uInt32)rOld3.getOpacity()) / 3L));
+ }
+ }
+} // end of namespace basegfx
+
+#endif /* _BGFX_PIXEL_BPIXEL_HXX */