/* -*- 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 <config_cairo_canvas.h>
#include <config_wasm_strip.h>
#include <vcl/bitmapex.hxx>
#include <vcl/ImageTree.hxx>
#if ENABLE_CAIRO_CANVAS
#include <vcl/cairo.hxx>
#endif
#include <basegfx/range/b2drectangle.hxx>
#include <array>
#include <vcl/RawBitmap.hxx>
class SvStream;
namespace basegfx { class B2DHomMatrix; }
namespace com::sun::star::geometry { struct IntegerRectangle2D; }
namespace vcl::bitmap {
#if !ENABLE_WASM_STRIP_PREMULTIPLY
typedef std::array<std::array<sal_uInt8, 256 >, 256 > lookup_table;
lookup_table const & get_premultiply_table();
VCL_DLLPUBLIC lookup_table const & get_unpremultiply_table();
#endif
VCL_DLLPUBLIC sal_uInt8 unpremultiply(sal_uInt8 c, sal_uInt8 a);
VCL_DLLPUBLIC 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,
sal_Int8 nBitsPerPixel,
bool bReversColors = false , bool bReverseAlpha = false );
void VCL_DLLPUBLIC fillWithData(sal_uInt8* pData, BitmapEx const & rBitmapEx);
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, const 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 const & 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<sal_uInt8,64 > 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);
BitmapColor premultiply(const BitmapColor c);
BitmapColor unpremultiply(const BitmapColor c);
} // end vcl::bitmap
#endif // INCLUDED_VCL_BITMAP_TOOLS_HXX
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