/* -*- 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 #include #include #include #include #include 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_uInt32 GetScanlineSize() const { assert(mpBuffer && "Access is not valid!"); return mpBuffer ? mpBuffer->mnScanlineSize : 0; } 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(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 const 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).GetIndex(); } /** 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 GetPixelForN32BitTcXbgr(ConstScanline pScanline, long nX, const ColorMask& rMask); static BitmapColor GetPixelForN32BitTcArgb(ConstScanline pScanline, long nX, const ColorMask& rMask); static BitmapColor GetPixelForN32BitTcXrgb(ConstScanline pScanline, long nX, const ColorMask& rMask); static BitmapColor GetPixelForN32BitTcBgra(ConstScanline pScanline, long nX, const ColorMask& rMask); static BitmapColor GetPixelForN32BitTcBgrx(ConstScanline pScanline, long nX, const ColorMask& rMask); static BitmapColor GetPixelForN32BitTcRgba(ConstScanline pScanline, long nX, const ColorMask& rMask); static BitmapColor GetPixelForN32BitTcRgbx(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 SetPixelForN32BitTcXbgr(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 SetPixelForN32BitTcXrgb(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 SetPixelForN32BitTcBgrx(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 SetPixelForN32BitTcRgbx(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: */