/* -*- 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/. */ #ifndef INCLUDED_VCL_BITMAP_TOOLS_HXX #define INCLUDED_VCL_BITMAP_TOOLS_HXX #include #include #include #if ENABLE_CAIRO_CANVAS #include #endif #include #include #include class SvStream; namespace basegfx { class B2DHomMatrix; } namespace com::sun::star::geometry { struct IntegerRectangle2D; } namespace vcl::bitmap { typedef std::array, 256> lookup_table; VCL_DLLPUBLIC lookup_table const & get_premultiply_table(); VCL_DLLPUBLIC lookup_table const & get_unpremultiply_table(); sal_uInt8 unpremultiply(sal_uInt8 c, sal_uInt8 a); sal_uInt8 premultiply(sal_uInt8 c, sal_uInt8 a); BitmapEx VCL_DLLPUBLIC loadFromName(const OUString& rFileName, const ImageLoadFlags eFlags = ImageLoadFlags::NONE); void loadFromSvg(SvStream& rStream, const OUString& sPath, BitmapEx& rBitmapEx, double fScaleFactor); /** Copy block of image data into the bitmap. Assumes that the Bitmap has been constructed with the desired size. @param pData The block of data to copy @param nStride The number of bytes in a scanline, must be >= (width * bitcount / 8) */ BitmapEx VCL_DLLPUBLIC CreateFromData(sal_uInt8 const *pData, sal_Int32 nWidth, sal_Int32 nHeight, sal_Int32 nStride, vcl::PixelFormat ePixelFormat, bool bReversColors = false, bool bReverseAlpha = false); BitmapEx VCL_DLLPUBLIC CreateFromData( RawBitmap && data ); #if ENABLE_CAIRO_CANVAS VCL_DLLPUBLIC BitmapEx* CreateFromCairoSurface(Size size, cairo_surface_t* pSurface); #endif VCL_DLLPUBLIC BitmapEx CanvasTransformBitmap( const BitmapEx& rBitmap, const ::basegfx::B2DHomMatrix& rTransform, ::basegfx::B2DRectangle const & rDestRect, ::basegfx::B2DHomMatrix const & rLocalTransform ); VCL_DLLPUBLIC void DrawAlphaBitmapAndAlphaGradient(BitmapEx & rBitmapEx, bool bFixedTransparence, float fTransparence, AlphaMask & rNewMask); VCL_DLLPUBLIC void DrawAndClipBitmap(const Point& rPos, const Size& rSize, const BitmapEx& rBitmap, BitmapEx & aBmpEx, basegfx::B2DPolyPolygon const & rClipPath); VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > GetMaskDIB(BitmapEx const & aBmpEx); /** * @param data will be filled with alpha data, if xBitmap is alpha/transparent image * @param bHasAlpha will be set to true if resulting surface has alpha **/ VCL_DLLPUBLIC void CanvasCairoExtractBitmapData( BitmapEx const & rBmpEx, Bitmap & rBitmap, unsigned char*& data, bool& bHasAlpha, tools::Long& rnWidth, tools::Long& rnHeight ); VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > CanvasExtractBitmapData(BitmapEx const & rBitmapEx, const css::geometry::IntegerRectangle2D& rect); // helper to construct historical 8x8 bitmaps with two colors BitmapEx VCL_DLLPUBLIC createHistorical8x8FromArray(std::array const & pArray, Color aColorPix, Color aColorBack); bool VCL_DLLPUBLIC isHistorical8x8(const BitmapEx& rBitmapEx, Color& o_rBack, Color& o_rFront); VCL_DLLPUBLIC bool convertBitmap32To24Plus8(BitmapEx const & rInput, BitmapEx & rResult); /** Retrieve downsampled and cropped bitmap Takes destination size in twips units. @attention This method ignores negative rDstSz values, thus mirroring must happen outside this method (e.g. in DrawBitmap) */ VCL_DLLPUBLIC Bitmap GetDownsampledBitmap(Size const& rDstSizeTwip, Point const& rSrcPt, Size const& rSrcSz, Bitmap const& rBmp, tools::Long nMaxBmpDPIX, tools::Long nMaxBmpDPIY); } // end vcl::bitmap #endif // INCLUDED_VCL_BITMAP_TOOLS_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ tro/collabora/cp-6.0-29 LibreOffice 核心代码仓库文档基金会

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