BitmapTools.hxx

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#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;
 
VCL_DLLPUBLIC lookup_table const & get_premultiply_table();
VCL_DLLPUBLIC lookup_table const & get_unpremultiply_table();
#endif
 
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);
 
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);
 
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<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);
 
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
 
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