d0df04f299
Change-Id: Iaea4396f60aeade5303bf83a4504ad62f161b83c
472 lines
17 KiB
C++
472 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_VCL_BMPACC_HXX
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#define INCLUDED_VCL_BMPACC_HXX
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#include <tools/solar.h>
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#include <vcl/dllapi.h>
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#include <vcl/salbtype.hxx>
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#include <vcl/bitmap.hxx>
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// --------------------
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// - Access defines -
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// --------------------
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#define DECL_FORMAT_GETPIXEL( Format ) \
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static BitmapColor GetPixelFor##Format( ConstScanline pScanline, long nX, const ColorMask& rMask );
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#define DECL_FORMAT_SETPIXEL( Format ) \
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static void SetPixelFor##Format( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask );
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#define DECL_FORMAT( Format ) \
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DECL_FORMAT_GETPIXEL( Format ) \
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DECL_FORMAT_SETPIXEL( Format )
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#define IMPL_FORMAT_GETPIXEL( Format ) \
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BitmapColor BitmapReadAccess::GetPixelFor##Format( ConstScanline pScanline, long nX, const ColorMask& rMask )
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#define IMPL_FORMAT_GETPIXEL_NOMASK( Format ) \
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BitmapColor BitmapReadAccess::GetPixelFor##Format( ConstScanline pScanline, long nX, const ColorMask& )
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#define IMPL_FORMAT_SETPIXEL( Format ) \
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void BitmapReadAccess::SetPixelFor##Format( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask )
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#define IMPL_FORMAT_SETPIXEL_NOMASK( Format ) \
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void BitmapReadAccess::SetPixelFor##Format( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& )
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#define CASE_FORMAT( Format ) \
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case( BMP_FORMAT##Format ): \
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{ \
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mFncGetPixel = GetPixelFor##Format;\
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mFncSetPixel = SetPixelFor##Format;\
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} \
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break;
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// --------------------
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// - Access functions -
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// --------------------
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typedef BitmapColor (*FncGetPixel)( ConstScanline pScanline, long nX, const ColorMask& rMask );
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typedef void (*FncSetPixel)( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask );
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// --------------------
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// - BitmapReadAccess -
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// --------------------
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class VCL_DLLPUBLIC BitmapReadAccess
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{
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friend class BitmapWriteAccess;
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private:
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BitmapReadAccess() {}
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BitmapReadAccess( const BitmapReadAccess& ) {}
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BitmapReadAccess& operator=( const BitmapReadAccess& ) { return *this; }
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protected:
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Bitmap maBitmap;
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BitmapBuffer* mpBuffer;
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Scanline* mpScanBuf;
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ColorMask maColorMask;
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FncGetPixel mFncGetPixel;
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FncSetPixel mFncSetPixel;
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sal_Bool mbModify;
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SAL_DLLPRIVATE void ImplCreate( Bitmap& rBitmap );
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SAL_DLLPRIVATE void ImplDestroy();
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SAL_DLLPRIVATE sal_Bool ImplSetAccessPointers( sal_uLong nFormat );
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public:
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SAL_DLLPRIVATE void ImplZeroInitUnusedBits();
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SAL_DLLPRIVATE BitmapBuffer* ImplGetBitmapBuffer() const { return mpBuffer; }
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DECL_FORMAT( _1BIT_MSB_PAL )
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DECL_FORMAT( _1BIT_LSB_PAL )
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DECL_FORMAT( _4BIT_MSN_PAL )
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DECL_FORMAT( _4BIT_LSN_PAL )
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DECL_FORMAT( _8BIT_PAL )
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DECL_FORMAT( _8BIT_TC_MASK )
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DECL_FORMAT( _16BIT_TC_MSB_MASK )
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DECL_FORMAT( _16BIT_TC_LSB_MASK )
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DECL_FORMAT( _24BIT_TC_BGR )
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DECL_FORMAT( _24BIT_TC_RGB )
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DECL_FORMAT( _24BIT_TC_MASK )
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DECL_FORMAT( _32BIT_TC_ABGR )
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DECL_FORMAT( _32BIT_TC_ARGB )
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DECL_FORMAT( _32BIT_TC_BGRA )
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DECL_FORMAT( _32BIT_TC_RGBA )
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DECL_FORMAT( _32BIT_TC_MASK )
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protected:
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BitmapReadAccess( Bitmap& rBitmap, sal_Bool bModify );
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public:
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BitmapReadAccess( Bitmap& rBitmap );
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virtual ~BitmapReadAccess();
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inline sal_Bool operator!() const;
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inline long Width() const;
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inline long Height() const;
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inline Point TopLeft() const;
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inline Point BottomRight() const;
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inline sal_Bool IsTopDown() const;
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inline sal_Bool IsBottomUp() const;
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inline sal_uLong GetScanlineFormat() const;
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inline sal_uLong GetScanlineSize() const;
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inline sal_uInt16 GetBitCount() const;
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inline BitmapColor GetBestMatchingColor( const BitmapColor& rBitmapColor );
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inline Scanline GetBuffer() const;
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inline Scanline GetScanline( long nY ) const;
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inline sal_Bool HasPalette() const;
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inline const BitmapPalette& GetPalette() const;
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inline sal_uInt16 GetPaletteEntryCount() const;
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inline const BitmapColor& GetPaletteColor( sal_uInt16 nColor ) const;
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inline const BitmapColor& GetBestPaletteColor( const BitmapColor& rBitmapColor ) const;
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sal_uInt16 GetBestPaletteIndex( const BitmapColor& rBitmapColor ) const;
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inline sal_Bool HasColorMask() const;
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inline ColorMask& GetColorMask() const;
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inline BitmapColor GetPixelFromData( const sal_uInt8* pData, long nX ) const;
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inline void SetPixelOnData( sal_uInt8* pData, long nX, const BitmapColor& rBitmapColor );
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inline BitmapColor GetPixel( long nY, long nX ) const;
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inline BitmapColor GetColor( long nY, long nX ) const;
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inline sal_uInt8 GetPixelIndex( long nY, long nX ) const;
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inline sal_uInt8 GetLuminance( long nY, long nX ) const;
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/** Get the interpolated color at coordinates fY, fX; if outside, return rFallback */
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BitmapColor GetInterpolatedColorWithFallback( double fY, double fX, const BitmapColor& rFallback ) const;
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/** Get the color at coordinates fY, fX; if outside, return rFallback. Automatically does the correct
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inside/outside checks, e.g. static_cast< sal_uInt32 >(-0.25) *is* 0, not -1 and has to be outside */
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BitmapColor GetColorWithFallback( double fY, double fX, const BitmapColor& rFallback ) const;
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};
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// ---------------------
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// - BitmapWriteAccess -
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// ---------------------
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class VCL_DLLPUBLIC BitmapWriteAccess : public BitmapReadAccess
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{
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public:
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BitmapWriteAccess( Bitmap& rBitmap );
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virtual ~BitmapWriteAccess();
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void CopyScanline( long nY, const BitmapReadAccess& rReadAcc );
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void CopyScanline( long nY, ConstScanline aSrcScanline,
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sal_uLong nSrcScanlineFormat, sal_uLong nSrcScanlineSize );
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void CopyBuffer( const BitmapReadAccess& rReadAcc );
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inline void SetPalette( const BitmapPalette& rPalette );
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inline void SetPaletteEntryCount( sal_uInt16 nCount );
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inline void SetPaletteColor( sal_uInt16 nColor, const BitmapColor& rBitmapColor );
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inline void SetPixel( long nY, long nX, const BitmapColor& rBitmapColor );
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inline void SetPixelIndex( long nY, long nX, sal_uInt8 cIndex );
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void SetLineColor( const Color& rColor );
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void SetFillColor( const Color& rColor );
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void Erase( const Color& rColor );
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void DrawLine( const Point& rStart, const Point& rEnd );
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void FillRect( const Rectangle& rRect );
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void DrawRect( const Rectangle& rRect );
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private:
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BitmapColor* mpLineColor;
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BitmapColor* mpFillColor;
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BitmapWriteAccess() {}
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BitmapWriteAccess( const BitmapWriteAccess& ) : BitmapReadAccess() {}
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BitmapWriteAccess& operator=( const BitmapWriteAccess& ) { return *this; }
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};
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// -----------
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// - Inlines -
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// -----------
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inline sal_Bool BitmapReadAccess::operator!() const
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{
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return( mpBuffer == NULL );
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}
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// ------------------------------------------------------------------
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inline long BitmapReadAccess::Width() const
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{
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return( mpBuffer ? mpBuffer->mnWidth : 0L );
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}
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// ------------------------------------------------------------------
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inline long BitmapReadAccess::Height() const
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{
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return( mpBuffer ? mpBuffer->mnHeight : 0L );
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}
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// ------------------------------------------------------------------
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inline Point BitmapReadAccess::TopLeft() const
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{
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return Point();
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}
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// ------------------------------------------------------------------
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inline Point BitmapReadAccess::BottomRight() const
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{
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return Point( Width() - 1L, Height() - 1L );
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}
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// ------------------------------------------------------------------
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inline sal_Bool BitmapReadAccess::IsTopDown() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return( mpBuffer ? sal::static_int_cast<sal_Bool>( BMP_SCANLINE_ADJUSTMENT( mpBuffer->mnFormat ) == BMP_FORMAT_TOP_DOWN ) : sal_False );
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}
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// ------------------------------------------------------------------
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inline sal_Bool BitmapReadAccess::IsBottomUp() const
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{
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return !IsTopDown();
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}
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// ------------------------------------------------------------------
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inline sal_uLong BitmapReadAccess::GetScanlineFormat() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return( mpBuffer ? BMP_SCANLINE_FORMAT( mpBuffer->mnFormat ) : 0UL );
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}
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// ------------------------------------------------------------------
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inline sal_uLong BitmapReadAccess::GetScanlineSize() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return( mpBuffer ? mpBuffer->mnScanlineSize : 0UL );
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}
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// ------------------------------------------------------------------
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inline sal_uInt16 BitmapReadAccess::GetBitCount() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return( mpBuffer ? mpBuffer->mnBitCount : 0 );
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}
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// ------------------------------------------------------------------
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inline BitmapColor BitmapReadAccess::GetBestMatchingColor( const BitmapColor& rBitmapColor )
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{
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if( HasPalette() )
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return BitmapColor( (sal_uInt8) GetBestPaletteIndex( rBitmapColor ) );
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else
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return rBitmapColor;
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}
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// ------------------------------------------------------------------
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inline Scanline BitmapReadAccess::GetBuffer() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return( mpBuffer ? mpBuffer->mpBits : NULL );
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}
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// ------------------------------------------------------------------
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inline Scanline BitmapReadAccess::GetScanline( long nY ) const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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DBG_ASSERT( nY < mpBuffer->mnHeight, "y-coordinate out of range!" );
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return( mpBuffer ? mpScanBuf[ nY ] : NULL );
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}
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// ------------------------------------------------------------------
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inline sal_Bool BitmapReadAccess::HasPalette() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return( mpBuffer && !!mpBuffer->maPalette );
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}
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// ------------------------------------------------------------------
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inline const BitmapPalette& BitmapReadAccess::GetPalette() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return mpBuffer->maPalette;
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}
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// ------------------------------------------------------------------
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inline sal_uInt16 BitmapReadAccess::GetPaletteEntryCount() const
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{
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DBG_ASSERT( HasPalette(), "Bitmap has no palette!" );
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return( HasPalette() ? mpBuffer->maPalette.GetEntryCount() : 0 );
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}
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// ------------------------------------------------------------------
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inline const BitmapColor& BitmapReadAccess::GetPaletteColor( sal_uInt16 nColor ) const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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DBG_ASSERT( HasPalette(), "Bitmap has no palette!" );
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return mpBuffer->maPalette[ nColor ];
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}
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// ------------------------------------------------------------------
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inline const BitmapColor& BitmapReadAccess::GetBestPaletteColor( const BitmapColor& rBitmapColor ) const
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{
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return GetPaletteColor( GetBestPaletteIndex( rBitmapColor ) );
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}
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// ------------------------------------------------------------------
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inline sal_Bool BitmapReadAccess::HasColorMask() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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const sal_uLong nFormat = BMP_SCANLINE_FORMAT( mpBuffer->mnFormat );
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return( nFormat == BMP_FORMAT_8BIT_TC_MASK ||
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nFormat == BMP_FORMAT_16BIT_TC_MSB_MASK ||
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nFormat == BMP_FORMAT_16BIT_TC_LSB_MASK ||
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nFormat == BMP_FORMAT_24BIT_TC_MASK ||
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nFormat == BMP_FORMAT_32BIT_TC_MASK );
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}
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// ------------------------------------------------------------------
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inline ColorMask& BitmapReadAccess::GetColorMask() const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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return mpBuffer->maColorMask;
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}
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// ------------------------------------------------------------------
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inline BitmapColor BitmapReadAccess::GetPixel( long nY, long nX ) const
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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DBG_ASSERT( nX < mpBuffer->mnWidth, "x-coordinate out of range!" );
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DBG_ASSERT( nY < mpBuffer->mnHeight, "y-coordinate out of range!" );
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return mFncGetPixel( mpScanBuf[ nY ], nX, maColorMask );
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}
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inline sal_uInt8 BitmapReadAccess::GetPixelIndex( long nY, long nX ) const
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{
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return GetPixel( nY, nX ).GetBlueOrIndex();
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}
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// ------------------------------------------------------------------
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inline BitmapColor BitmapReadAccess::GetPixelFromData( const sal_uInt8* pData, long nX ) const
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{
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DBG_ASSERT( pData, "Access is not valid!" );
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return mFncGetPixel( pData, nX, maColorMask );
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}
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// ------------------------------------------------------------------
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inline void BitmapReadAccess::SetPixelOnData( sal_uInt8* pData, long nX, const BitmapColor& rBitmapColor )
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{
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DBG_ASSERT( pData, "Access is not valid!" );
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mFncSetPixel( pData, nX, rBitmapColor, maColorMask );
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}
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// ------------------------------------------------------------------
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inline BitmapColor BitmapReadAccess::GetColor( long nY, long nX ) const
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{
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if( HasPalette() )
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return mpBuffer->maPalette[ GetPixelIndex( nY, nX ) ];
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else
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return GetPixel( nY, nX );
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}
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// ------------------------------------------------------------------
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inline sal_uInt8 BitmapReadAccess::GetLuminance( long nY, long nX ) const
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{
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return GetColor( nY, nX ).GetLuminance();
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}
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// ------------------------------------------------------------------
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inline void BitmapWriteAccess::SetPalette( const BitmapPalette& rPalette )
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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mpBuffer->maPalette = rPalette;
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}
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// ------------------------------------------------------------------
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inline void BitmapWriteAccess::SetPaletteEntryCount( sal_uInt16 nCount )
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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mpBuffer->maPalette.SetEntryCount( nCount );
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}
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// ------------------------------------------------------------------
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inline void BitmapWriteAccess::SetPaletteColor( sal_uInt16 nColor, const BitmapColor& rBitmapColor )
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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DBG_ASSERT( HasPalette(), "Bitmap has no palette!" );
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mpBuffer->maPalette[ nColor ] = rBitmapColor;
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}
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// ------------------------------------------------------------------
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inline void BitmapWriteAccess::SetPixel( long nY, long nX, const BitmapColor& rBitmapColor )
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{
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DBG_ASSERT( mpBuffer, "Access is not valid!" );
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DBG_ASSERT( nX < mpBuffer->mnWidth, "x-coordinate out of range!" );
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DBG_ASSERT( nY < mpBuffer->mnHeight, "y-coordinate out of range!" );
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mFncSetPixel( mpScanBuf[ nY ], nX, rBitmapColor, maColorMask );
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}
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inline void BitmapWriteAccess::SetPixelIndex( long nY, long nX, sal_uInt8 cIndex )
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{
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SetPixel( nY, nX, BitmapColor( cIndex ));
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}
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// ------------------------------------------------------------------
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#endif // INCLUDED_VCL_BMPACC_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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