f6a64f9bdc
Change-Id: Ibd28b8fa92e98ebeb482a9081fbeae24defe4adb Reviewed-on: https://gerrit.libreoffice.org/70826 Tested-by: Jenkins Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
137 lines
5.2 KiB
C++
137 lines
5.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef INCLUDED_VCL_BITMAP_TOOLS_HXX
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#define INCLUDED_VCL_BITMAP_TOOLS_HXX
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#include <config_cairo_canvas.h>
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#include <vcl/bitmapex.hxx>
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#include <vcl/ImageTree.hxx>
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#include <vcl/BitmapColor.hxx>
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#if ENABLE_CAIRO_CANVAS
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#include <vcl/cairo.hxx>
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#endif
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#include <basegfx/range/b2drectangle.hxx>
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#include <o3tl/safeint.hxx>
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#include <array>
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class SvStream;
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namespace basegfx { class B2DHomMatrix; }
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namespace com { namespace sun { namespace star { namespace geometry { struct IntegerRectangle2D; } } } }
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namespace vcl {
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namespace bitmap {
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typedef sal_uInt8 (*lookup_table)[256];
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lookup_table VCL_DLLPUBLIC get_premultiply_table();
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lookup_table VCL_DLLPUBLIC get_unpremultiply_table();
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VCL_DLLPUBLIC sal_uInt8 unpremultiply(sal_uInt8 c, sal_uInt8 a);
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VCL_DLLPUBLIC sal_uInt8 premultiply(sal_uInt8 c, sal_uInt8 a);
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/**
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* Intended to be used to feed into CreateFromData to create a BitmapEx. RGB data format.
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*/
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class VCL_DLLPUBLIC RawBitmap
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{
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friend BitmapEx VCL_DLLPUBLIC CreateFromData( RawBitmap&& rawBitmap );
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std::unique_ptr<sal_uInt8[]> mpData;
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Size const maSize;
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sal_uInt8 const mnBitCount;
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public:
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RawBitmap(Size const & rSize, sal_uInt8 nBitCount)
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: maSize(rSize),
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mnBitCount(nBitCount)
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{
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assert(nBitCount == 24 || nBitCount == 32);
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sal_Int32 nRowSize, nDataSize;
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if (o3tl::checked_multiply<sal_Int32>(rSize.getWidth(), nBitCount/8, nRowSize) ||
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o3tl::checked_multiply<sal_Int32>(nRowSize, rSize.getHeight(), nDataSize))
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{
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throw std::bad_alloc();
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}
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mpData.reset(new sal_uInt8[nDataSize]);
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}
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void SetPixel(long nY, long nX, Color nColor)
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{
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long p = (nY * maSize.getWidth() + nX) * (mnBitCount/8);
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mpData[ p++ ] = nColor.GetRed();
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mpData[ p++ ] = nColor.GetGreen();
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mpData[ p++ ] = nColor.GetBlue();
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if (mnBitCount == 32)
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mpData[ p ] = nColor.GetTransparency();
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}
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Color GetPixel(long nY, long nX) const
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{
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long p = (nY * maSize.getWidth() + nX) * mnBitCount/8;
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if (mnBitCount == 24)
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return Color( mpData[p], mpData[p+1], mpData[p+2]);
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else
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return Color( mpData[p+3], mpData[p], mpData[p+1], mpData[p+2]);
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}
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// so we don't accidentally leave any code in that uses palette color indexes
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void SetPixel(long nY, long nX, BitmapColor nColor) = delete;
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long Height() { return maSize.Height(); }
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long Width() { return maSize.Width(); }
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sal_uInt8 GetBitCount() { return mnBitCount; }
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};
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BitmapEx VCL_DLLPUBLIC loadFromName(const OUString& rFileName, const ImageLoadFlags eFlags = ImageLoadFlags::NONE);
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void loadFromSvg(SvStream& rStream, const OUString& sPath, BitmapEx& rBitmapEx, double fScaleFactor);
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/** Copy block of image data into the bitmap.
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Assumes that the Bitmap has been constructed with the desired size.
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@param pData
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The block of data to copy
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@param nStride
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The number of bytes in a scanline, must be >= (width * nBitCount / 8)
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*/
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BitmapEx VCL_DLLPUBLIC CreateFromData( sal_uInt8 const *pData, sal_Int32 nWidth, sal_Int32 nHeight, sal_Int32 nStride, sal_uInt16 nBitCount );
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BitmapEx VCL_DLLPUBLIC CreateFromData( RawBitmap && data );
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#if ENABLE_CAIRO_CANVAS
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VCL_DLLPUBLIC BitmapEx* CreateFromCairoSurface(Size size, cairo_surface_t* pSurface);
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#endif
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VCL_DLLPUBLIC BitmapEx CanvasTransformBitmap( const BitmapEx& rBitmap,
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const ::basegfx::B2DHomMatrix& rTransform,
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::basegfx::B2DRectangle const & rDestRect,
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::basegfx::B2DHomMatrix const & rLocalTransform );
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VCL_DLLPUBLIC void DrawAlphaBitmapAndAlphaGradient(BitmapEx & rBitmapEx, bool bFixedTransparence, float fTransparence, AlphaMask & rNewMask);
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VCL_DLLPUBLIC void DrawAndClipBitmap(const Point& rPos, const Size& rSize, const BitmapEx& rBitmap, BitmapEx & aBmpEx, basegfx::B2DPolyPolygon const & rClipPath);
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VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > GetMaskDIB(BitmapEx const & aBmpEx);
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/**
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* @param data will be filled with alpha data, if xBitmap is alpha/transparent image
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* @param bHasAlpha will be set to true if resulting surface has alpha
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**/
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VCL_DLLPUBLIC void CanvasCairoExtractBitmapData( BitmapEx const & rBmpEx, Bitmap & rBitmap, unsigned char*& data, bool& bHasAlpha, long& rnWidth, long& rnHeight );
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VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > CanvasExtractBitmapData(BitmapEx const & rBitmapEx, const css::geometry::IntegerRectangle2D& rect);
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// helper to construct historical 8x8 bitmaps with two colors
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BitmapEx VCL_DLLPUBLIC createHistorical8x8FromArray(std::array<sal_uInt8,64> const & pArray, Color aColorPix, Color aColorBack);
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bool VCL_DLLPUBLIC isHistorical8x8(const BitmapEx& rBitmapEx, Color& o_rBack, Color& o_rFront);
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VCL_DLLPUBLIC bool convertBitmap32To24Plus8(BitmapEx const & rInput, BitmapEx & rResult);
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}} // end vcl::bitmap
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#endif // INCLUDED_VCL_BITMAP_TOOLS_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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