1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2 /* 3 * This file is part of the LibreOffice project. 4 * 5 * This Source Code Form is subject to the terms of the Mozilla Public 6 * License, v. 2.0. If a copy of the MPL was not distributed with this 7 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 8 */ 9 10 #ifndef INCLUDED_VCL_BITMAP_TOOLS_HXX 11 #define INCLUDED_VCL_BITMAP_TOOLS_HXX 12 13 #include <config_cairo_canvas.h> 14 #include <vcl/bitmapex.hxx> 15 #include <vcl/ImageTree.hxx> 16 #if ENABLE_CAIRO_CANVAS 17 #include <vcl/cairo.hxx> 18 #endif 19 #include <basegfx/range/b2drectangle.hxx> 20 #include <array> 21 #include <vcl/RawBitmap.hxx> 22 23 class SvStream; 24 namespace basegfx { class B2DHomMatrix; } 25 namespace com::sun::star::geometry { struct IntegerRectangle2D; } 26 27 namespace vcl::bitmap { 28 29 typedef std::array<std::array<sal_uInt8, 256>, 256> lookup_table; 30 31 VCL_DLLPUBLIC lookup_table const & get_premultiply_table(); 32 VCL_DLLPUBLIC lookup_table const & get_unpremultiply_table(); 33 34 sal_uInt8 unpremultiply(sal_uInt8 c, sal_uInt8 a); 35 sal_uInt8 premultiply(sal_uInt8 c, sal_uInt8 a); 36 37 BitmapEx VCL_DLLPUBLIC loadFromName(const OUString& rFileName, const ImageLoadFlags eFlags = ImageLoadFlags::NONE); 38 39 void loadFromSvg(SvStream& rStream, const OUString& sPath, BitmapEx& rBitmapEx, double fScaleFactor); 40 41 /** Copy block of image data into the bitmap. 42 Assumes that the Bitmap has been constructed with the desired size. 43 44 @param pData 45 The block of data to copy 46 @param nStride 47 The number of bytes in a scanline, must be >= (width * bitcount / 8) 48 */ 49 BitmapEx VCL_DLLPUBLIC CreateFromData( sal_uInt8 const *pData, sal_Int32 nWidth, sal_Int32 nHeight, sal_Int32 nStride, vcl::PixelFormat ePixelFormat, bool bReversColors = false); 50 51 BitmapEx VCL_DLLPUBLIC CreateFromData( RawBitmap && data ); 52 53 #if ENABLE_CAIRO_CANVAS 54 VCL_DLLPUBLIC BitmapEx* CreateFromCairoSurface(Size size, cairo_surface_t* pSurface); 55 #endif 56 57 VCL_DLLPUBLIC BitmapEx CanvasTransformBitmap( const BitmapEx& rBitmap, 58 const ::basegfx::B2DHomMatrix& rTransform, 59 ::basegfx::B2DRectangle const & rDestRect, 60 ::basegfx::B2DHomMatrix const & rLocalTransform ); 61 62 VCL_DLLPUBLIC void DrawAlphaBitmapAndAlphaGradient(BitmapEx & rBitmapEx, bool bFixedTransparence, float fTransparence, AlphaMask & rNewMask); 63 64 VCL_DLLPUBLIC void DrawAndClipBitmap(const Point& rPos, const Size& rSize, const BitmapEx& rBitmap, BitmapEx & aBmpEx, basegfx::B2DPolyPolygon const & rClipPath); 65 66 VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > GetMaskDIB(BitmapEx const & aBmpEx); 67 68 /** 69 * @param data will be filled with alpha data, if xBitmap is alpha/transparent image 70 * @param bHasAlpha will be set to true if resulting surface has alpha 71 **/ 72 VCL_DLLPUBLIC void CanvasCairoExtractBitmapData( BitmapEx const & rBmpEx, Bitmap & rBitmap, unsigned char*& data, bool& bHasAlpha, tools::Long& rnWidth, tools::Long& rnHeight ); 73 74 VCL_DLLPUBLIC css::uno::Sequence< sal_Int8 > CanvasExtractBitmapData(BitmapEx const & rBitmapEx, const css::geometry::IntegerRectangle2D& rect); 75 76 // helper to construct historical 8x8 bitmaps with two colors 77 78 BitmapEx VCL_DLLPUBLIC createHistorical8x8FromArray(std::array<sal_uInt8,64> const & pArray, Color aColorPix, Color aColorBack); 79 bool VCL_DLLPUBLIC isHistorical8x8(const BitmapEx& rBitmapEx, Color& o_rBack, Color& o_rFront); 80 81 VCL_DLLPUBLIC bool convertBitmap32To24Plus8(BitmapEx const & rInput, BitmapEx & rResult); 82 83 } // end vcl::bitmap 84 85 #endif // INCLUDED_VCL_BITMAP_TOOLS_HXX 86 87 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 88