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/* -*- 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_BMPACC_HXX
#define INCLUDED_VCL_BMPACC_HXX
#include <memory>
#include <tools/solar.h>
#include <vcl/dllapi.h>
#include <vcl/salbtype.hxx>
#include <vcl/bitmap.hxx>
typedef BitmapColor (*FncGetPixel)(ConstScanline pScanline, long nX, const ColorMask& rMask);
typedef void (*FncSetPixel)(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
class VCL_DLLPUBLIC BitmapInfoAccess
{
friend class BitmapReadAccess;
public:
BitmapInfoAccess(Bitmap& rBitmap, BitmapAccessMode nMode = BitmapAccessMode::Info);
virtual ~BitmapInfoAccess();
bool operator!() const
{
return mpBuffer == nullptr;
}
long Width() const
{
return mpBuffer ? mpBuffer->mnWidth : 0L;
}
long Height() const
{
return mpBuffer ? mpBuffer->mnHeight : 0L;
}
bool IsTopDown() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer && (mpBuffer->mnFormat & ScanlineFormat::TopDown);
}
bool IsBottomUp() const
{
return !IsTopDown();
}
ScanlineFormat GetScanlineFormat() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer ? RemoveScanline(mpBuffer->mnFormat) : ScanlineFormat::NONE;
}
sal_uLong GetScanlineSize() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer ? mpBuffer->mnScanlineSize : 0UL;
}
sal_uInt16 GetBitCount() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer ? mpBuffer->mnBitCount : 0;
}
BitmapColor GetBestMatchingColor(const BitmapColor& rBitmapColor)
{
if (HasPalette())
return BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rBitmapColor)));
else
return rBitmapColor;
}
bool HasPalette() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer && !!mpBuffer->maPalette;
}
const BitmapPalette& GetPalette() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer->maPalette;
}
sal_uInt16 GetPaletteEntryCount() const
{
assert(HasPalette() && "Bitmap has no palette!");
return HasPalette() ? mpBuffer->maPalette.GetEntryCount() : 0;
}
const BitmapColor& GetPaletteColor( sal_uInt16 nColor ) const
{
assert(mpBuffer && "Access is not valid!");
assert(HasPalette() && "Bitmap has no palette!");
return mpBuffer->maPalette[nColor];
}
const BitmapColor& GetBestPaletteColor(const BitmapColor& rBitmapColor) const
{
return GetPaletteColor(GetBestPaletteIndex(rBitmapColor));
}
sal_uInt16 GetBestPaletteIndex(const BitmapColor& rBitmapColor) const;
ColorMask& GetColorMask() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer->maColorMask;
}
private:
BitmapInfoAccess(const BitmapInfoAccess&) = delete;
BitmapInfoAccess& operator=(const BitmapInfoAccess&) = delete;
protected:
Bitmap maBitmap;
BitmapBuffer* mpBuffer;
ColorMask maColorMask;
BitmapAccessMode mnAccessMode;
};
class VCL_DLLPUBLIC BitmapReadAccess : public BitmapInfoAccess
{
friend class BitmapWriteAccess;
public:
BitmapReadAccess(Bitmap& rBitmap, BitmapAccessMode nMode = BitmapAccessMode::Read);
virtual ~BitmapReadAccess() override;
Scanline GetBuffer() const
{
assert(mpBuffer && "Access is not valid!");
return mpBuffer ? mpBuffer->mpBits : nullptr;
}
Scanline GetScanline(long nY) const
{
assert(mpBuffer && "Access is not valid!");
assert(nY < mpBuffer->mnHeight && "y-coordinate out of range!");
if (mpBuffer->mnFormat & ScanlineFormat::TopDown)
{
return mpBuffer->mpBits + (nY * mpBuffer->mnScanlineSize);
}
return mpBuffer->mpBits + ((mpBuffer->mnHeight - 1 - nY) * mpBuffer->mnScanlineSize);
}
BitmapColor GetPixelFromData(const sal_uInt8* pData, long nX) const
{
assert(pData && "Access is not valid!");
return mFncGetPixel( pData, nX, maColorMask );
}
sal_uInt8 GetIndexFromData(const sal_uInt8* pData, long nX) const
{
return GetPixelFromData( pData, nX ).GetIndex();
}
void SetPixelOnData(sal_uInt8* pData, long nX, const BitmapColor& rBitmapColor)
{
assert(pData && "Access is not valid!");
mFncSetPixel(pData, nX, rBitmapColor, maColorMask);
}
BitmapColor GetPixel(long nY, long nX) const
{
assert(mpBuffer && "Access is not valid!");
assert(nX < mpBuffer->mnWidth && "x-coordinate out of range!");
assert(nY < mpBuffer->mnHeight && "y-coordinate out of range!");
return mFncGetPixel(GetScanline(nY), nX, maColorMask );
}
BitmapColor GetColor(long nY, long nX) const
{
if (HasPalette())
return mpBuffer->maPalette[GetPixelIndex(nY, nX)];
else
return GetPixel(nY, nX);
}
sal_uInt8 GetPixelIndex(long nY, long nX) const
{
return GetPixel(nY, nX).GetBlueOrIndex();
}
sal_uInt8 GetLuminance(long nY, long nX) const
{
return GetColor(nY, nX).GetLuminance();
}
/** Get the interpolated color at coordinates fY, fX; if outside, return rFallback */
BitmapColor GetInterpolatedColorWithFallback( double fY, double fX, const BitmapColor& rFallback ) const;
/** Get the color at coordinates fY, fX; if outside, return rFallback. Automatically does the correct
inside/outside checks, e.g. static_cast< sal_uInt32 >(-0.25) *is* 0, not -1 and has to be outside */
BitmapColor GetColorWithFallback( double fY, double fX, const BitmapColor& rFallback ) const;
private:
BitmapReadAccess(const BitmapReadAccess&) = delete;
BitmapReadAccess& operator=(const BitmapReadAccess&) = delete;
protected:
FncGetPixel mFncGetPixel;
FncSetPixel mFncSetPixel;
SAL_DLLPRIVATE bool ImplSetAccessPointers( ScanlineFormat nFormat );
public:
SAL_DLLPRIVATE BitmapBuffer* ImplGetBitmapBuffer() const
{
return mpBuffer;
}
static BitmapColor GetPixelForN1BitMsbPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN1BitLsbPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN4BitMsnPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN4BitLsnPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN8BitPal(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN8BitTcMask(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN16BitTcMsbMask(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN16BitTcLsbMask(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN24BitTcBgr(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN24BitTcRgb(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN32BitTcAbgr(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN32BitTcArgb(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN32BitTcBgra(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN32BitTcRgba(ConstScanline pScanline, long nX, const ColorMask& rMask);
static BitmapColor GetPixelForN32BitTcMask(ConstScanline pScanline, long nX, const ColorMask& rMask);
static void SetPixelForN1BitMsbPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN1BitLsbPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN4BitMsnPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN4BitLsnPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN8BitPal(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN8BitTcMask(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN16BitTcMsbMask(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN16BitTcLsbMask(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN24BitTcBgr(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN24BitTcRgb(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN32BitTcAbgr(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN32BitTcArgb(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN32BitTcBgra(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN32BitTcRgba(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
static void SetPixelForN32BitTcMask(Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask);
};
#endif // INCLUDED_VCL_BMPACC_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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