diff options
Diffstat (limited to 'vcl/source/helper/canvastools.cxx')
| -rw-r--r-- | vcl/source/helper/canvastools.cxx | 627 |
1 files changed, 627 insertions, 0 deletions
diff --git a/vcl/source/helper/canvastools.cxx b/vcl/source/helper/canvastools.cxx new file mode 100644 index 0000000000..1e1b2bdd2d --- /dev/null +++ b/vcl/source/helper/canvastools.cxx @@ -0,0 +1,627 @@ +/* -*- 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 . + */ + +#include <com/sun/star/geometry/RealSize2D.hpp> +#include <com/sun/star/geometry/IntegerSize2D.hpp> +#include <com/sun/star/geometry/IntegerPoint2D.hpp> +#include <com/sun/star/geometry/IntegerRectangle2D.hpp> + +#include <com/sun/star/rendering/ColorSpaceType.hpp> +#include <com/sun/star/rendering/RenderingIntent.hpp> +#include <com/sun/star/rendering/VolatileContentDestroyedException.hpp> +#include <com/sun/star/rendering/XBitmap.hpp> +#include <com/sun/star/rendering/IntegerBitmapLayout.hpp> +#include <com/sun/star/rendering/ColorComponentTag.hpp> + +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/vector/b2dsize.hxx> +#include <basegfx/range/b2drectangle.hxx> +#include <basegfx/point/b2ipoint.hxx> +#include <basegfx/range/b2irectangle.hxx> + +#include <sal/log.hxx> +#include <tools/helpers.hxx> +#include <comphelper/diagnose_ex.hxx> + +#include <vcl/bitmapex.hxx> + +#include <canvasbitmap.hxx> +#include <vcl/canvastools.hxx> +#include <vcl/BitmapWriteAccess.hxx> + +using namespace ::com::sun::star; + +namespace vcl::unotools +{ + uno::Reference< rendering::XBitmap > xBitmapFromBitmapEx(const ::BitmapEx& inputBitmap ) + { + SAL_INFO( "vcl.helper", "vcl::unotools::xBitmapFromBitmapEx()" ); + + return new vcl::unotools::VclCanvasBitmap( inputBitmap ); + } + + namespace + { + bool equalsLayout( const rendering::IntegerBitmapLayout& rLHS, + const rendering::IntegerBitmapLayout& rRHS ) + { + return + rLHS.ScanLineBytes == rRHS.ScanLineBytes && + rLHS.ScanLineStride == rRHS.ScanLineStride && + rLHS.PlaneStride == rRHS.PlaneStride && + rLHS.ColorSpace == rRHS.ColorSpace && + rLHS.Palette == rRHS.Palette && + rLHS.IsMsbFirst == rRHS.IsMsbFirst; + } + bool readBmp( sal_Int32 nWidth, + sal_Int32 nHeight, + const rendering::IntegerBitmapLayout& rLayout, + const uno::Reference< rendering::XIntegerReadOnlyBitmap >& xInputBitmap, + BitmapScopedWriteAccess& rWriteAcc, + BitmapScopedWriteAccess& rAlphaAcc ) + { + rendering::IntegerBitmapLayout aCurrLayout; + geometry::IntegerRectangle2D aRect; + uno::Sequence<sal_Int8> aPixelData; + uno::Sequence<rendering::RGBColor> aRGBColors; + uno::Sequence<rendering::ARGBColor> aARGBColors; + + for( aRect.Y1=0; aRect.Y1<nHeight; ++aRect.Y1 ) + { + aRect.X1 = 0; aRect.X2 = nWidth; aRect.Y2 = aRect.Y1+1; + try + { + aPixelData = xInputBitmap->getData(aCurrLayout,aRect); + } + catch( rendering::VolatileContentDestroyedException& ) + { + // re-read bmp from the start + return false; + } + if( !equalsLayout(aCurrLayout, rLayout) ) + return false; // re-read bmp from the start + + Scanline pScanline = rWriteAcc->GetScanline( aRect.Y1 ); + if( rAlphaAcc.get() ) + { + Scanline pScanlineAlpha = rAlphaAcc->GetScanline( aRect.Y1 ); + // read ARGB color + aARGBColors = rLayout.ColorSpace->convertIntegerToARGB(aPixelData); + + if( rWriteAcc->HasPalette() ) + { + for( sal_Int32 x=0; x<nWidth; ++x ) + { + const rendering::ARGBColor& rColor=aARGBColors[x]; + rWriteAcc->SetPixelOnData( pScanline, x, + BitmapColor(static_cast<sal_uInt8>(rWriteAcc->GetBestPaletteIndex( + BitmapColor( toByteColor(rColor.Red), + toByteColor(rColor.Green), + toByteColor(rColor.Blue))))) ); + rAlphaAcc->SetPixelOnData( pScanlineAlpha, x, + BitmapColor( toByteColor(rColor.Alpha) )); + } + } + else + { + for( sal_Int32 x=0; x<nWidth; ++x ) + { + const rendering::ARGBColor& rColor=aARGBColors[x]; + rWriteAcc->SetPixelOnData( pScanline, x, + BitmapColor( toByteColor(rColor.Red), + toByteColor(rColor.Green), + toByteColor(rColor.Blue) )); + rAlphaAcc->SetPixelOnData( pScanlineAlpha, x, + BitmapColor( toByteColor(rColor.Alpha) )); + } + } + } + else + { + // read RGB color + aRGBColors = rLayout.ColorSpace->convertIntegerToRGB(aPixelData); + if( rWriteAcc->HasPalette() ) + { + for( sal_Int32 x=0; x<nWidth; ++x ) + { + const rendering::RGBColor& rColor=aRGBColors[x]; + rWriteAcc->SetPixelOnData( pScanline, x, + BitmapColor(static_cast<sal_uInt8>(rWriteAcc->GetBestPaletteIndex( + BitmapColor( toByteColor(rColor.Red), + toByteColor(rColor.Green), + toByteColor(rColor.Blue))))) ); + } + } + else + { + for( sal_Int32 x=0; x<nWidth; ++x ) + { + const rendering::RGBColor& rColor=aRGBColors[x]; + rWriteAcc->SetPixelOnData( pScanline, x, + BitmapColor( toByteColor(rColor.Red), + toByteColor(rColor.Green), + toByteColor(rColor.Blue) )); + } + } + } + } + + return true; + } + } + + ::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XIntegerReadOnlyBitmap >& xInputBitmap ) + { + SAL_INFO( "vcl.helper", "vcl::unotools::bitmapExFromXBitmap()" ); + + if( !xInputBitmap.is() ) + return ::BitmapEx(); + + // tunnel directly for known implementation + VclCanvasBitmap* pImplBitmap = dynamic_cast<VclCanvasBitmap*>(xInputBitmap.get()); + if( pImplBitmap ) + return pImplBitmap->getBitmapEx(); + + // retrieve data via UNO interface + + // volatile bitmaps are a bit more complicated to read + // from... + + // loop a few times, until successfully read (for XVolatileBitmap) + for( int i=0; i<10; ++i ) + { + sal_Int32 nDepth=0; + sal_Int32 nAlphaDepth=0; + const rendering::IntegerBitmapLayout aLayout( + xInputBitmap->getMemoryLayout()); + + OSL_ENSURE(aLayout.ColorSpace.is(), + "Cannot convert image without color space!"); + if( !aLayout.ColorSpace.is() ) + return ::BitmapEx(); + + nDepth = aLayout.ColorSpace->getBitsPerPixel(); + + if( xInputBitmap->hasAlpha() ) + { + // determine alpha channel depth + const uno::Sequence<sal_Int8> aTags( + aLayout.ColorSpace->getComponentTags() ); + const sal_Int8* pStart(aTags.getConstArray()); + const std::size_t nLen(aTags.getLength()); + const sal_Int8* pEnd(pStart+nLen); + + const std::ptrdiff_t nAlphaIndex = + std::find(pStart,pEnd, + rendering::ColorComponentTag::ALPHA) - pStart; + + if( nAlphaIndex < sal::static_int_cast<std::ptrdiff_t>(nLen) ) + { + nAlphaDepth = aLayout.ColorSpace->getComponentBitCounts()[nAlphaIndex] > 1 ? 8 : 1; + nDepth -= nAlphaDepth; + } + } + + BitmapPalette aPalette; + if( aLayout.Palette.is() ) + { + uno::Reference< rendering::XColorSpace > xPaletteColorSpace( + aLayout.Palette->getColorSpace()); + ENSURE_OR_THROW(xPaletteColorSpace.is(), + "Palette without color space"); + + const sal_Int32 nEntryCount( aLayout.Palette->getNumberOfEntries() ); + if( nEntryCount <= 256 ) + { + if( nEntryCount <= 2 ) + nDepth = 1; + else + nDepth = 8; + + const sal_uInt16 nPaletteEntries( + sal::static_int_cast<sal_uInt16>( + std::min(sal_Int32(255), nEntryCount))); + + // copy palette entries + aPalette.SetEntryCount(nPaletteEntries); + uno::Reference<rendering::XBitmapPalette> xPalette( aLayout.Palette ); + uno::Reference<rendering::XColorSpace> xPalColorSpace( xPalette->getColorSpace() ); + + uno::Sequence<double> aPaletteEntry; + for( sal_uInt16 j=0; j<nPaletteEntries; ++j ) + { + if( !xPalette->getIndex(aPaletteEntry,j) && + nAlphaDepth == 0 ) + { + nAlphaDepth = 1; + } + uno::Sequence<rendering::RGBColor> aColors=xPalColorSpace->convertToRGB(aPaletteEntry); + ENSURE_OR_THROW(aColors.getLength() == 1, + "Palette returned more or less than one entry"); + const rendering::RGBColor& rColor=aColors[0]; + aPalette[j] = BitmapColor(toByteColor(rColor.Red), + toByteColor(rColor.Green), + toByteColor(rColor.Blue)); + } + } + } + + const ::Size aPixelSize( + sizeFromIntegerSize2D(xInputBitmap->getSize())); + + // normalize bitcount + auto ePixelFormat = + ( nDepth <= 8 ) ? vcl::PixelFormat::N8_BPP : + vcl::PixelFormat::N24_BPP; + auto eAlphaPixelFormat = vcl::PixelFormat::N8_BPP; + + ::Bitmap aBitmap( aPixelSize, + ePixelFormat, + aLayout.Palette.is() ? &aPalette : nullptr ); + ::Bitmap aAlpha; + if( nAlphaDepth ) + aAlpha = Bitmap(aPixelSize, + eAlphaPixelFormat, + &Bitmap::GetGreyPalette( + sal::static_int_cast<sal_uInt16>(1 << nAlphaDepth)) ); + + { // limit scoped access + BitmapScopedWriteAccess pWriteAccess( aBitmap ); + BitmapScopedWriteAccess pAlphaWriteAccess; + if (nAlphaDepth) + pAlphaWriteAccess = aAlpha; + + ENSURE_OR_THROW(pWriteAccess.get() != nullptr, + "Cannot get write access to bitmap"); + + const sal_Int32 nWidth(aPixelSize.Width()); + const sal_Int32 nHeight(aPixelSize.Height()); + + if( !readBmp(nWidth,nHeight,aLayout,xInputBitmap, + pWriteAccess,pAlphaWriteAccess) ) + continue; + } // limit scoped access + + if( nAlphaDepth ) + return ::BitmapEx( aBitmap, + AlphaMask( aAlpha ) ); + else + return ::BitmapEx( aBitmap ); + } + + // failed to read data 10 times - bail out + return ::BitmapEx(); + } + + geometry::RealSize2D size2DFromSize( const Size& rSize ) + { + return geometry::RealSize2D( rSize.Width(), + rSize.Height() ); + } + + Size sizeFromRealSize2D( const geometry::RealSize2D& rSize ) + { + return Size( static_cast<tools::Long>(rSize.Width + .5), + static_cast<tools::Long>(rSize.Height + .5) ); + } + + ::Size sizeFromB2DSize( const basegfx::B2DVector& rVec ) + { + return ::Size( FRound( rVec.getX() ), + FRound( rVec.getY() ) ); + } + + ::Point pointFromB2DPoint( const basegfx::B2DPoint& rPoint ) + { + return pointFromB2IPoint(basegfx::fround(rPoint)); + } + + ::tools::Rectangle rectangleFromB2DRectangle( const basegfx::B2DRange& rRect ) + { + return rectangleFromB2IRectangle(basegfx::fround(rRect)); + } + + Point pointFromB2IPoint( const basegfx::B2IPoint& rPoint ) + { + return ::Point( rPoint.getX(), + rPoint.getY() ); + } + + basegfx::B2IPoint b2IPointFromPoint(Point const& rPoint) + { + return basegfx::B2IPoint(rPoint.X(), rPoint.Y()); + } + + tools::Rectangle rectangleFromB2IRectangle( const basegfx::B2IRange& rRect ) + { + return ::tools::Rectangle( rRect.getMinX(), + rRect.getMinY(), + rRect.getMaxX(), + rRect.getMaxY() ); + } + + basegfx::B2IRectangle b2IRectangleFromRectangle(tools::Rectangle const& rRect) + { + // although B2IRange internally has separate height/width emptiness, it doesn't + // expose any API to let us set them separately, so just do the best we can. + if (rRect.IsWidthEmpty() && rRect.IsHeightEmpty()) + return basegfx::B2IRange( basegfx::B2ITuple( rRect.Left(), rRect.Top() ) ); + return basegfx::B2IRange( rRect.Left(), + rRect.Top(), + rRect.IsWidthEmpty() ? rRect.Left() : rRect.Right(), + rRect.IsHeightEmpty() ? rRect.Top() : rRect.Bottom() ); + } + + basegfx::B2DSize b2DSizeFromSize(const Size& rSize) + { + return basegfx::B2DSize(rSize.Width(), rSize.Height()); + } + + basegfx::B2DVector b2DVectorFromSize(const Size& rSize) + { + return basegfx::B2DVector(rSize.Width(), rSize.Height()); + } + + basegfx::B2DPoint b2DPointFromPoint( const ::Point& rPoint ) + { + return basegfx::B2DPoint( rPoint.X(), + rPoint.Y() ); + } + + basegfx::B2DRange b2DRectangleFromRectangle( const ::tools::Rectangle& rRect ) + { + // although B2DRange internally has separate height/width emptiness, it doesn't + // expose any API to let us set them separately, so just do the best we can. + if (rRect.IsWidthEmpty() && rRect.IsHeightEmpty()) + return basegfx::B2DRange( basegfx::B2DTuple( rRect.Left(), rRect.Top() ) ); + return basegfx::B2DRectangle( rRect.Left(), + rRect.Top(), + rRect.IsWidthEmpty() ? rRect.Left() : rRect.Right(), + rRect.IsHeightEmpty() ? rRect.Top() : rRect.Bottom() ); + } + + geometry::IntegerSize2D integerSize2DFromSize( const Size& rSize ) + { + return geometry::IntegerSize2D( rSize.Width(), + rSize.Height() ); + } + + Size sizeFromIntegerSize2D( const geometry::IntegerSize2D& rSize ) + { + return Size( rSize.Width, + rSize.Height ); + } + + Point pointFromIntegerPoint2D( const geometry::IntegerPoint2D& rPoint ) + { + return Point( rPoint.X, + rPoint.Y ); + } + + tools::Rectangle rectangleFromIntegerRectangle2D( const geometry::IntegerRectangle2D& rRectangle ) + { + return tools::Rectangle( rRectangle.X1, rRectangle.Y1, + rRectangle.X2, rRectangle.Y2 ); + } + + namespace + { + class StandardColorSpace : public cppu::WeakImplHelper< css::rendering::XColorSpace > + { + private: + uno::Sequence< sal_Int8 > m_aComponentTags; + + virtual ::sal_Int8 SAL_CALL getType( ) override + { + return rendering::ColorSpaceType::RGB; + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL getComponentTags( ) override + { + return m_aComponentTags; + } + virtual ::sal_Int8 SAL_CALL getRenderingIntent( ) override + { + return rendering::RenderingIntent::PERCEPTUAL; + } + virtual uno::Sequence< beans::PropertyValue > SAL_CALL getProperties( ) override + { + return uno::Sequence< beans::PropertyValue >(); + } + virtual uno::Sequence< double > SAL_CALL convertColorSpace( const uno::Sequence< double >& deviceColor, + const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertToARGB(deviceColor)); + return targetColorSpace->convertFromARGB(aIntermediate); + } + virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertToRGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::RGBColor > aRes(nLen/4); + rendering::RGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::RGBColor(pIn[0],pIn[1],pIn[2]); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToARGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::ARGBColor(pIn[3],pIn[0],pIn[1],pIn[2]); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToPARGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::ARGBColor(pIn[3],pIn[3]*pIn[0],pIn[3]*pIn[1],pIn[3]*pIn[2]); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override + { + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( const auto& rIn : rgbColor ) + { + *pColors++ = rIn.Red; + *pColors++ = rIn.Green; + *pColors++ = rIn.Blue; + *pColors++ = 1.0; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( const auto& rIn : rgbColor ) + { + *pColors++ = rIn.Red; + *pColors++ = rIn.Green; + *pColors++ = rIn.Blue; + *pColors++ = rIn.Alpha; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( const auto& rIn : rgbColor ) + { + *pColors++ = rIn.Red/rIn.Alpha; + *pColors++ = rIn.Green/rIn.Alpha; + *pColors++ = rIn.Blue/rIn.Alpha; + *pColors++ = rIn.Alpha; + } + return aRes; + } + + public: + StandardColorSpace() : m_aComponentTags(4) + { + sal_Int8* pTags = m_aComponentTags.getArray(); + pTags[0] = rendering::ColorComponentTag::RGB_RED; + pTags[1] = rendering::ColorComponentTag::RGB_GREEN; + pTags[2] = rendering::ColorComponentTag::RGB_BLUE; + pTags[3] = rendering::ColorComponentTag::ALPHA; + } + }; + } + + uno::Reference<rendering::XColorSpace> createStandardColorSpace() + { + return new StandardColorSpace(); + } + + uno::Sequence< double > colorToStdColorSpaceSequence( const Color& rColor ) + { + return + { + toDoubleColor(rColor.GetRed()), + toDoubleColor(rColor.GetGreen()), + toDoubleColor(rColor.GetBlue()), + toDoubleColor(rColor.GetAlpha()) + }; + } + + Color stdColorSpaceSequenceToColor( const uno::Sequence< double >& rColor ) + { + ENSURE_ARG_OR_THROW( rColor.getLength() == 4, + "color must have 4 channels" ); + + Color aColor; + + aColor.SetRed ( toByteColor(rColor[0]) ); + aColor.SetGreen( toByteColor(rColor[1]) ); + aColor.SetBlue ( toByteColor(rColor[2]) ); + aColor.SetAlpha( toByteColor(rColor[3]) ); + + return aColor; + } + + uno::Sequence< double > colorToDoubleSequence( + const Color& rColor, + const uno::Reference< rendering::XColorSpace >& xColorSpace ) + { + uno::Sequence<rendering::ARGBColor> aSeq + { + { + toDoubleColor(rColor.GetAlpha()), + toDoubleColor(rColor.GetRed()), + toDoubleColor(rColor.GetGreen()), + toDoubleColor(rColor.GetBlue()) + } + }; + + return xColorSpace->convertFromARGB(aSeq); + } + + Color doubleSequenceToColor( + const uno::Sequence< double >& rColor, + const uno::Reference< rendering::XColorSpace >& xColorSpace ) + { + const rendering::ARGBColor aARGBColor( + xColorSpace->convertToARGB(rColor)[0]); + + return Color( ColorAlpha, toByteColor(aARGBColor.Alpha), + toByteColor(aARGBColor.Red), + toByteColor(aARGBColor.Green), + toByteColor(aARGBColor.Blue) ); + } + +} // namespace canvas + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |