vcl/inc/win/salbmp.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef _SV_SALBMP_H
  21 #define _SV_SALBMP_H
  22
  23 #include <tools/gen.hxx>
  24 #include <win/wincomp.hxx>
  25 #include <salbmp.hxx>
  26 #include <boost/shared_ptr.hpp>
  27
  28 // --------------
  29 // - SalBitmap  -
  30 // --------------
  31
  32 struct  BitmapBuffer;
  33 class   BitmapColor;
  34 class   BitmapPalette;
  35 class   SalGraphics;
  36 namespace Gdiplus { class Bitmap; }
  37 typedef boost::shared_ptr< Gdiplus::Bitmap > GdiPlusBmpPtr;
  38
  39 class WinSalBitmap : public SalBitmap
  40 {
  41 private:
  42     friend class GdiPlusBuffer; // allow buffer to remove maGdiPlusBitmap and mpAssociatedAlpha eventually
  43
  44     Size                maSize;
  45     HGLOBAL             mhDIB;
  46     HBITMAP             mhDDB;
  47
  48     // the buffered evtl. used Gdiplus::Bitmap instance. It is managed by
  49     // GdiPlusBuffer. To make this safe, it is only handed out as shared
  50     // pointer; the GdiPlusBuffer may delete the local instance.
  51     //
  52     // mpAssociatedAlpha holds the last WinSalBitmap used to construct an
  53     // evtl. buffered GdiPlusBmp. This is needed since the GdiPlusBmp is a single
  54     // instance and remembered only on the content-WinSalBitmap, not on the
  55     // alpha-WinSalBitmap.
  56     GdiPlusBmpPtr       maGdiPlusBitmap;
  57     const WinSalBitmap* mpAssociatedAlpha;
  58
  59     sal_uInt16          mnBitCount;
  60
  61     Gdiplus::Bitmap* ImplCreateGdiPlusBitmap(const WinSalBitmap& rAlphaSource);
  62     Gdiplus::Bitmap* ImplCreateGdiPlusBitmap();
  63
  64 public:
  65
  66     HGLOBAL             ImplGethDIB() const { return mhDIB; }
  67     HBITMAP             ImplGethDDB() const { return mhDDB; }
  68
  69     GdiPlusBmpPtr ImplGetGdiPlusBitmap(const WinSalBitmap* pAlphaSource = 0) const;
  70
  71     static HGLOBAL      ImplCreateDIB( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal );
  72     static HANDLE       ImplCopyDIBOrDDB( HANDLE hHdl, bool bDIB );
  73     static sal_uInt16   ImplGetDIBColorCount( HGLOBAL hDIB );
  74     static void         ImplDecodeRLEBuffer( const BYTE* pSrcBuf, BYTE* pDstBuf,
  75                                              const Size& rSizePixel, bool bRLE4 );
  76
  77 public:
  78
  79                         WinSalBitmap();
  80     virtual             ~WinSalBitmap();
  81
  82 public:
  83
  84     bool                        Create( HANDLE hBitmap, bool bDIB, bool bCopyHandle );
  85     virtual bool                Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal );
  86     virtual bool                Create( const SalBitmap& rSalBmpImpl );
  87     virtual bool                Create( const SalBitmap& rSalBmpImpl, SalGraphics* pGraphics );
  88     virtual bool                Create( const SalBitmap& rSalBmpImpl, sal_uInt16 nNewBitCount );
  89     virtual bool                Create( const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmapCanvas > xBitmapCanvas,
  90                                            Size& rSize,
  91                                            bool bMask = false );
  92
  93     virtual void                Destroy();
  94
  95     virtual Size                GetSize() const { return maSize; }
  96     virtual sal_uInt16              GetBitCount() const { return mnBitCount; }
  97
  98     virtual BitmapBuffer*       AcquireBuffer( bool bReadOnly );
  99     virtual void                ReleaseBuffer( BitmapBuffer* pBuffer, bool bReadOnly );
 100     virtual bool                GetSystemData( BitmapSystemData& rData );
 101 };
 102
 103 #endif // _SV_SALBMP_HXX
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */