From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- include/vcl/BitmapTools.hxx | 89 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 include/vcl/BitmapTools.hxx (limited to 'include/vcl/BitmapTools.hxx') diff --git a/include/vcl/BitmapTools.hxx b/include/vcl/BitmapTools.hxx new file mode 100644 index 000000000..8c168b642 --- /dev/null +++ b/include/vcl/BitmapTools.hxx @@ -0,0 +1,89 @@ +/* -*- 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 +#include +#if ENABLE_CAIRO_CANVAS +#include +#endif +#include +#include +#include +#include + +class SvStream; +namespace basegfx { class B2DHomMatrix; } +namespace com::sun::star::geometry { struct IntegerRectangle2D; } + +namespace vcl::bitmap { + +typedef sal_uInt8 (*lookup_table)[256]; + +lookup_table VCL_DLLPUBLIC get_premultiply_table(); +lookup_table VCL_DLLPUBLIC 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 * nBitCount / 8) +*/ +BitmapEx VCL_DLLPUBLIC CreateFromData( sal_uInt8 const *pData, sal_Int32 nWidth, sal_Int32 nHeight, sal_Int32 nStride, sal_uInt16 nBitCount ); + +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, long& rnWidth, 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); + +} // end vcl::bitmap + +#endif // INCLUDED_VCL_BITMAP_TOOLS_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3