/* -*- 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 <vcl/bitmapex.hxx>
#include <vcl/ImageTree.hxx>
#include <vcl/salbtype.hxx>
#include <tools/stream.hxx>
#if ENABLE_CAIRO_CANVAS
#include <vcl/cairo.hxx>
#endif
#include <com/sun/star/geometry/IntegerPoint2D.hpp>
#include <com/sun/star/geometry/IntegerRectangle2D.hpp>
#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>

namespace vcl {
namespace bitmap {

/**
 * Intended to be used to feed into CreateFromData to create a BitmapEx. RGB data format.
 */
class VCL_DLLPUBLIC RawBitmap
{
friend BitmapEx VCL_DLLPUBLIC CreateFromData( RawBitmap&& rawBitmap );
    std::unique_ptr<sal_uInt8[]> mpData;
    Size maSize;
    sal_uInt8 mnBitCount;
public:
    RawBitmap(Size const & rSize, sal_uInt8 nBitCount)
        : mpData(new sal_uInt8[ rSize.getWidth() * nBitCount/8 * rSize.getHeight()]),
          maSize(rSize),
          mnBitCount(nBitCount)
    {
        assert(nBitCount == 24 || nBitCount == 32);
    }
    void SetPixel(long nY, long nX, Color nColor)
    {
        long p = (nY * maSize.getWidth() + nX) * (mnBitCount/8);
        mpData[ p++ ] = nColor.GetRed();
        mpData[ p++ ] = nColor.GetGreen();
        mpData[ p++ ] = nColor.GetBlue();
        if (mnBitCount == 32)
            mpData[ p ] = nColor.GetTransparency();
    }
    Color GetPixel(long nY, long nX) const
    {
        long p = (nY * maSize.getWidth() + nX) * mnBitCount/8;
        if (mnBitCount == 24)
            return Color( mpData[p], mpData[p+1], mpData[p+2]);
        else
            return Color( mpData[p+3], mpData[p], mpData[p+1], mpData[p+2]);
    }
    // so we don't accidentally leave any code in that uses palette color indexes
    void SetPixel(long nY, long nX, BitmapColor nColor) = delete;
    long Height() { return maSize.Height(); }
    long Width() { return maSize.Width(); }
    sal_uInt8 GetBitCount() { return mnBitCount; }
};

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);

}} // end vcl::bitmap

#endif // INCLUDED_VCL_BITMAP_TOOLS_HXX

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