diff options
Diffstat (limited to 'drawinglayer/source/processor2d/vclhelperbitmaptransform.cxx')
| -rw-r--r-- | drawinglayer/source/processor2d/vclhelperbitmaptransform.cxx | 431 |
1 files changed, 431 insertions, 0 deletions
diff --git a/drawinglayer/source/processor2d/vclhelperbitmaptransform.cxx b/drawinglayer/source/processor2d/vclhelperbitmaptransform.cxx new file mode 100644 index 000000000000..ce81fb73ed6f --- /dev/null +++ b/drawinglayer/source/processor2d/vclhelperbitmaptransform.cxx @@ -0,0 +1,431 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * 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. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_drawinglayer.hxx" + +#include <vclhelperbitmaptransform.hxx> +#include <vcl/bmpacc.hxx> +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/color/bcolormodifier.hxx> + +////////////////////////////////////////////////////////////////////////////// +// support for rendering Bitmap and BitmapEx contents + +namespace drawinglayer +{ + namespace + { + void impSmoothPoint(BitmapColor& rValue, const basegfx::B2DPoint& rSource, sal_Int32 nIntX, sal_Int32 nIntY, BitmapReadAccess& rRead) + { + double fDeltaX(rSource.getX() - nIntX); + double fDeltaY(rSource.getY() - nIntY); + sal_Int32 nIndX(0L); + sal_Int32 nIndY(0L); + + if(fDeltaX > 0.0 && nIntX + 1L < rRead.Width()) + { + nIndX++; + } + else if(fDeltaX < 0.0 && nIntX >= 1L) + { + fDeltaX = -fDeltaX; + nIndX--; + } + + if(fDeltaY > 0.0 && nIntY + 1L < rRead.Height()) + { + nIndY++; + } + else if(fDeltaY < 0.0 && nIntY >= 1L) + { + fDeltaY = -fDeltaY; + nIndY--; + } + + if(nIndX || nIndY) + { + const double fColorToReal(1.0 / 255.0); + double fR(rValue.GetRed() * fColorToReal); + double fG(rValue.GetGreen() * fColorToReal); + double fB(rValue.GetBlue() * fColorToReal); + double fRBottom(0.0), fGBottom(0.0), fBBottom(0.0); + + if(nIndX) + { + const double fMulA(fDeltaX * fColorToReal); + double fMulB(1.0 - fDeltaX); + const BitmapColor aTopPartner(rRead.GetColor(nIntY, nIntX + nIndX)); + + fR = (fR * fMulB) + (aTopPartner.GetRed() * fMulA); + fG = (fG * fMulB) + (aTopPartner.GetGreen() * fMulA); + fB = (fB * fMulB) + (aTopPartner.GetBlue() * fMulA); + + if(nIndY) + { + fMulB *= fColorToReal; + const BitmapColor aBottom(rRead.GetColor(nIntY + nIndY, nIntX)); + const BitmapColor aBottomPartner(rRead.GetColor(nIntY + nIndY, nIntX + nIndX)); + + fRBottom = (aBottom.GetRed() * fMulB) + (aBottomPartner.GetRed() * fMulA); + fGBottom = (aBottom.GetGreen() * fMulB) + (aBottomPartner.GetGreen() * fMulA); + fBBottom = (aBottom.GetBlue() * fMulB) + (aBottomPartner.GetBlue() * fMulA); + } + } + + if(nIndY) + { + if(!nIndX) + { + const BitmapColor aBottom(rRead.GetColor(nIntY + nIndY, nIntX)); + + fRBottom = aBottom.GetRed() * fColorToReal; + fGBottom = aBottom.GetGreen() * fColorToReal; + fBBottom = aBottom.GetBlue() * fColorToReal; + } + + const double fMulB(1.0 - fDeltaY); + + fR = (fR * fMulB) + (fRBottom * fDeltaY); + fG = (fG * fMulB) + (fGBottom * fDeltaY); + fB = (fB * fMulB) + (fBBottom * fDeltaY); + } + + rValue.SetRed((sal_uInt8)(fR * 255.0)); + rValue.SetGreen((sal_uInt8)(fG * 255.0)); + rValue.SetBlue((sal_uInt8)(fB * 255.0)); + } + } + + void impSmoothIndex(BitmapColor& rValue, const basegfx::B2DPoint& rSource, sal_Int32 nIntX, sal_Int32 nIntY, BitmapReadAccess& rRead) + { + double fDeltaX(rSource.getX() - nIntX); + double fDeltaY(rSource.getY() - nIntY); + sal_Int32 nIndX(0L); + sal_Int32 nIndY(0L); + + if(fDeltaX > 0.0 && nIntX + 1L < rRead.Width()) + { + nIndX++; + } + else if(fDeltaX < 0.0 && nIntX >= 1L) + { + fDeltaX = -fDeltaX; + nIndX--; + } + + if(fDeltaY > 0.0 && nIntY + 1L < rRead.Height()) + { + nIndY++; + } + else if(fDeltaY < 0.0 && nIntY >= 1L) + { + fDeltaY = -fDeltaY; + nIndY--; + } + + if(nIndX || nIndY) + { + const double fColorToReal(1.0 / 255.0); + double fVal(rValue.GetIndex() * fColorToReal); + double fValBottom(0.0); + + if(nIndX) + { + const double fMulA(fDeltaX * fColorToReal); + double fMulB(1.0 - fDeltaX); + const BitmapColor aTopPartner(rRead.GetPixel(nIntY, nIntX + nIndX)); + + fVal = (fVal * fMulB) + (aTopPartner.GetIndex() * fMulA); + + if(nIndY) + { + fMulB *= fColorToReal; + const BitmapColor aBottom(rRead.GetPixel(nIntY + nIndY, nIntX)); + const BitmapColor aBottomPartner(rRead.GetPixel(nIntY + nIndY, nIntX + nIndX)); + + fValBottom = (aBottom.GetIndex() * fMulB) + (aBottomPartner.GetIndex() * fMulA); + } + } + + if(nIndY) + { + if(!nIndX) + { + const BitmapColor aBottom(rRead.GetPixel(nIntY + nIndY, nIntX)); + + fValBottom = aBottom.GetIndex() * fColorToReal; + } + + const double fMulB(1.0 - fDeltaY); + + fVal = (fVal * fMulB) + (fValBottom * fDeltaY); + } + + rValue.SetIndex((sal_uInt8)(fVal * 255.0)); + } + } + + void impTransformBitmap(const Bitmap& rSource, Bitmap& rDestination, const basegfx::B2DHomMatrix& rTransform, bool bSmooth) + { + BitmapWriteAccess* pWrite = rDestination.AcquireWriteAccess(); + + if(pWrite) + { + const Size aContentSizePixel(rSource.GetSizePixel()); + BitmapReadAccess* pRead = (const_cast< Bitmap& >(rSource)).AcquireReadAccess(); + + if(pRead) + { + const Size aDestinationSizePixel(rDestination.GetSizePixel()); + bool bWorkWithIndex(rDestination.GetBitCount() <= 8); + BitmapColor aOutside(pRead->GetBestMatchingColor(BitmapColor(0xff, 0xff, 0xff))); + + for(sal_Int32 y(0L); y < aDestinationSizePixel.getHeight(); y++) + { + for(sal_Int32 x(0L); x < aDestinationSizePixel.getWidth(); x++) + { + const basegfx::B2DPoint aSourceCoor(rTransform * basegfx::B2DPoint(x, y)); + const sal_Int32 nIntX(basegfx::fround(aSourceCoor.getX())); + + if(nIntX >= 0L && nIntX < aContentSizePixel.getWidth()) + { + const sal_Int32 nIntY(basegfx::fround(aSourceCoor.getY())); + + if(nIntY >= 0L && nIntY < aContentSizePixel.getHeight()) + { + if(bWorkWithIndex) + { + BitmapColor aValue(pRead->GetPixel(nIntY, nIntX)); + + if(bSmooth) + { + impSmoothIndex(aValue, aSourceCoor, nIntX, nIntY, *pRead); + } + + pWrite->SetPixel(y, x, aValue); + } + else + { + BitmapColor aValue(pRead->GetColor(nIntY, nIntX)); + + if(bSmooth) + { + impSmoothPoint(aValue, aSourceCoor, nIntX, nIntY, *pRead); + } + + pWrite->SetPixel(y, x, aValue.IsIndex() ? aValue : pWrite->GetBestMatchingColor(aValue)); + } + + continue; + } + } + + // here are outside pixels. Complete mask + if(bWorkWithIndex) + { + pWrite->SetPixel(y, x, aOutside); + } + } + } + + delete pRead; + } + + delete pWrite; + } + } + + Bitmap impCreateEmptyBitmapWithPattern(const Bitmap& rSource, const Size& aTargetSizePixel) + { + Bitmap aRetval; + BitmapReadAccess* pReadAccess = (const_cast< Bitmap& >(rSource)).AcquireReadAccess(); + + if(pReadAccess) + { + if(rSource.GetBitCount() <= 8) + { + BitmapPalette aPalette(pReadAccess->GetPalette()); + aRetval = Bitmap(aTargetSizePixel, rSource.GetBitCount(), &aPalette); + } + else + { + aRetval = Bitmap(aTargetSizePixel, rSource.GetBitCount()); + } + + delete pReadAccess; + } + + return aRetval; + } + } // end of anonymous namespace +} // end of namespace drawinglayer + +namespace drawinglayer +{ + BitmapEx impTransformBitmapEx( + const BitmapEx& rSource, + const Rectangle& rCroppedRectPixel, + const basegfx::B2DHomMatrix& rTransform) + { + // force destination to 24 bit, we want to smooth output + const Size aDestinationSize(rCroppedRectPixel.GetSize()); + Bitmap aDestination(impCreateEmptyBitmapWithPattern(rSource.GetBitmap(), aDestinationSize)); + static bool bDoSmoothAtAll(true); + impTransformBitmap(rSource.GetBitmap(), aDestination, rTransform, bDoSmoothAtAll); + + // create mask + if(rSource.IsTransparent()) + { + if(rSource.IsAlpha()) + { + Bitmap aAlpha(impCreateEmptyBitmapWithPattern(rSource.GetAlpha().GetBitmap(), aDestinationSize)); + impTransformBitmap(rSource.GetAlpha().GetBitmap(), aAlpha, rTransform, bDoSmoothAtAll); + return BitmapEx(aDestination, AlphaMask(aAlpha)); + } + else + { + Bitmap aMask(impCreateEmptyBitmapWithPattern(rSource.GetMask(), aDestinationSize)); + impTransformBitmap(rSource.GetMask(), aMask, rTransform, false); + return BitmapEx(aDestination, aMask); + } + } + + return BitmapEx(aDestination); + } + + BitmapEx impModifyBitmapEx( + const basegfx::BColorModifierStack& rBColorModifierStack, + const BitmapEx& rSource) + { + Bitmap aChangedBitmap(rSource.GetBitmap()); + bool bDone(false); + + for(sal_uInt32 a(rBColorModifierStack.count()); a && !bDone; ) + { + const basegfx::BColorModifier& rModifier = rBColorModifierStack.getBColorModifier(--a); + + switch(rModifier.getMode()) + { + case basegfx::BCOLORMODIFYMODE_REPLACE : + { + // complete replace + if(rSource.IsTransparent()) + { + // clear bitmap with dest color + if(aChangedBitmap.GetBitCount() <= 8) + { + // do NOT use erase; for e.g. 8bit Bitmaps, the nearest color to the given + // erase color is determined and used -> this may be different from what is + // wanted here. Better create a new bitmap with the needed color explicitely + BitmapReadAccess* pReadAccess = aChangedBitmap.AcquireReadAccess(); + OSL_ENSURE(pReadAccess, "Got no Bitmap ReadAccess ?!?"); + + if(pReadAccess) + { + BitmapPalette aNewPalette(pReadAccess->GetPalette()); + aNewPalette[0] = BitmapColor(Color(rModifier.getBColor())); + aChangedBitmap = Bitmap( + aChangedBitmap.GetSizePixel(), + aChangedBitmap.GetBitCount(), + &aNewPalette); + delete pReadAccess; + } + } + else + { + aChangedBitmap.Erase(Color(rModifier.getBColor())); + } + } + else + { + // erase bitmap, caller will know to paint direct + aChangedBitmap.SetEmpty(); + } + + bDone = true; + break; + } + + default : // BCOLORMODIFYMODE_INTERPOLATE, BCOLORMODIFYMODE_GRAY, BCOLORMODIFYMODE_BLACKANDWHITE + { + BitmapWriteAccess* pContent = aChangedBitmap.AcquireWriteAccess(); + + if(pContent) + { + const double fConvertColor(1.0 / 255.0); + + for(sal_uInt32 y(0L); y < (sal_uInt32)pContent->Height(); y++) + { + for(sal_uInt32 x(0L); x < (sal_uInt32)pContent->Width(); x++) + { + const BitmapColor aBMCol(pContent->GetColor(y, x)); + const basegfx::BColor aBSource( + (double)aBMCol.GetRed() * fConvertColor, + (double)aBMCol.GetGreen() * fConvertColor, + (double)aBMCol.GetBlue() * fConvertColor); + const basegfx::BColor aBDest(rModifier.getModifiedColor(aBSource)); + + pContent->SetPixel(y, x, BitmapColor(Color(aBDest))); + } + } + + delete pContent; + } + + break; + } + } + } + + if(aChangedBitmap.IsEmpty()) + { + return BitmapEx(); + } + else + { + if(rSource.IsTransparent()) + { + if(rSource.IsAlpha()) + { + return BitmapEx(aChangedBitmap, rSource.GetAlpha()); + } + else + { + return BitmapEx(aChangedBitmap, rSource.GetMask()); + } + } + else + { + return BitmapEx(aChangedBitmap); + } + } + } +} // end of namespace drawinglayer + +////////////////////////////////////////////////////////////////////////////// +// eof |