Change Read/Write access to Scoped Read/Write access

Change-Id: I2259af0d169f850ceb39f22424197912dfd20171
Reviewed-on: https://gerrit.libreoffice.org/31624
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
(cherry picked from commit 7006568138b5b2d2c11dd558049cd4085c449c9e)
(cherry picked from commit b8ddfc7a4980f02907b8b7acbe8596e7f522c905)

8 files changed, 193 insertions, 231 deletions

diff --git a/vcl/source/filter/wmf/winmtf.cxx b/vcl/source/filter/wmf/winmtf.cxx
index 6bc8b7dfa551..c265da3be3da 100644
--- a/vcl/source/filter/wmf/winmtf.cxx
+++ b/vcl/source/filter/wmf/winmtf.cxx
@@ -1549,8 +1549,8 @@ void WinMtfOutput::ImplDrawBitmap( const Point& rPos, const Size& rSize, const B
                 // need to blend in AlphaMask quality (8Bit)
                 AlphaMask fromVDev(aVDevMask);
                 AlphaMask fromBmpEx(aBmpEx.GetAlpha());
-                BitmapReadAccess* pR = fromVDev.AcquireReadAccess();
-                BitmapWriteAccess* pW = fromBmpEx.AcquireWriteAccess();
+                AlphaMask::ScopedReadAccess pR(fromVDev);
+                AlphaMask::ScopedWriteAccess pW(fromBmpEx);
 
                 if(pR && pW)
                 {
@@ -1571,8 +1571,8 @@ void WinMtfOutput::ImplDrawBitmap( const Point& rPos, const Size& rSize, const B
                     }
                 }
 
-                fromVDev.ReleaseAccess(pR);
-                fromBmpEx.ReleaseAccess(pW);
+                pR.reset();
+                pW.reset();
                 aBmpEx = BitmapEx(aBmpEx.GetBitmap(), fromBmpEx);
             }
             else
diff --git a/vcl/source/gdi/bitmap.cxx b/vcl/source/gdi/bitmap.cxx
index b5641b82857d..a7ac32d52e94 100644
--- a/vcl/source/gdi/bitmap.cxx
+++ b/vcl/source/gdi/bitmap.cxx
@@ -267,12 +267,11 @@ bool Bitmap::HasGreyPalette() const
     const sal_uInt16    nBitCount = GetBitCount();
     bool            bRet = nBitCount == 1;
 
-    BitmapInfoAccess* pIAcc = const_cast<Bitmap*>(this)->AcquireInfoAccess();
+    ScopedInfoAccess pIAcc(const_cast<Bitmap&>(*this));
 
     if( pIAcc )
     {
         bRet = pIAcc->HasPalette() && pIAcc->GetPalette().IsGreyPalette();
-        ReleaseAccess( pIAcc );
     }
 
     return bRet;
@@ -467,7 +466,7 @@ bool Bitmap::Erase(const Color& rFillColor)
 
 bool Bitmap::Invert()
 {
-    BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+    ScopedWriteAccess   pAcc(*this);
     bool                bRet = false;
 
     if( pAcc )
@@ -493,7 +492,7 @@ bool Bitmap::Invert()
         }
 
         mxImpBmp->ImplInvalidateChecksum();
-        ReleaseAccess( pAcc );
+        pAcc.reset();
         bRet = true;
     }
 
@@ -508,7 +507,7 @@ bool Bitmap::Mirror( BmpMirrorFlags nMirrorFlags )
 
     if( bHorz && !bVert )
     {
-        BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+        ScopedWriteAccess   pAcc(*this);
 
         if( pAcc )
         {
@@ -528,13 +527,13 @@ bool Bitmap::Mirror( BmpMirrorFlags nMirrorFlags )
                 }
             }
 
-            ReleaseAccess( pAcc );
+            pAcc.reset();
             bRet = true;
         }
     }
     else if( bVert && !bHorz )
     {
-        BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+        ScopedWriteAccess   pAcc(*this);
 
         if( pAcc )
         {
@@ -551,13 +550,13 @@ bool Bitmap::Mirror( BmpMirrorFlags nMirrorFlags )
                 memcpy( pAcc->GetScanline( nOther ), pBuffer.get(), nScanSize );
             }
 
-            ReleaseAccess( pAcc );
+            pAcc.reset();
             bRet = true;
         }
     }
     else if( bHorz && bVert )
     {
-        BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+        ScopedWriteAccess   pAcc(*this);
 
         if( pAcc )
         {
@@ -588,7 +587,7 @@ bool Bitmap::Mirror( BmpMirrorFlags nMirrorFlags )
                 }
             }
 
-            ReleaseAccess( pAcc );
+            pAcc.reset();
             bRet = true;
         }
     }
@@ -611,7 +610,7 @@ bool Bitmap::Rotate( long nAngle10, const Color& rFillColor )
         bRet = Mirror( BmpMirrorFlags::Horizontal | BmpMirrorFlags::Vertical );
     else
     {
-        BitmapReadAccess*   pReadAcc = AcquireReadAccess();
+        ScopedReadAccess    pReadAcc(*this);
         Bitmap              aRotatedBmp;
 
         if( pReadAcc )
@@ -622,7 +621,7 @@ bool Bitmap::Rotate( long nAngle10, const Color& rFillColor )
             {
                 const Size          aNewSizePix( aSizePix.Height(), aSizePix.Width() );
                 Bitmap              aNewBmp( aNewSizePix, GetBitCount(), &pReadAcc->GetPalette() );
-                BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+                ScopedWriteAccess   pWriteAcc(aNewBmp);
 
                 if( pWriteAcc )
                 {
@@ -646,7 +645,7 @@ bool Bitmap::Rotate( long nAngle10, const Color& rFillColor )
                                 pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPixel( nOtherY--, nOtherX ) );
                     }
 
-                    ReleaseAccess( pWriteAcc );
+                    pWriteAcc.reset();
                 }
 
                 aRotatedBmp = aNewBmp;
@@ -661,7 +660,7 @@ bool Bitmap::Rotate( long nAngle10, const Color& rFillColor )
                 Rectangle           aNewBound( aPoly.GetBoundRect() );
                 const Size          aNewSizePix( aNewBound.GetSize() );
                 Bitmap              aNewBmp( aNewSizePix, GetBitCount(), &pReadAcc->GetPalette() );
-                BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+                ScopedWriteAccess   pWriteAcc(aNewBmp);
 
                 if( pWriteAcc )
                 {
@@ -716,13 +715,13 @@ bool Bitmap::Rotate( long nAngle10, const Color& rFillColor )
                         }
                     }
 
-                    ReleaseAccess( pWriteAcc );
+                    pWriteAcc.reset();
                 }
 
                 aRotatedBmp = aNewBmp;
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
         }
 
         if( ( bRet = !!aRotatedBmp ) )
@@ -742,14 +741,14 @@ bool Bitmap::Crop( const Rectangle& rRectPixel )
 
     if( !aRect.IsEmpty() && aSizePix != aRect.GetSize())
     {
-        BitmapReadAccess* pReadAcc = AcquireReadAccess();
+        ScopedReadAccess pReadAcc(*this);
 
         if( pReadAcc )
         {
             Point               aTmpPoint;
             const Rectangle     aNewRect( aTmpPoint, aRect.GetSize() );
             Bitmap              aNewBmp( aNewRect.GetSize(), GetBitCount(), &pReadAcc->GetPalette() );
-            BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess   pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -762,11 +761,11 @@ bool Bitmap::Crop( const Rectangle& rRectPixel )
                     for( long nX = 0, nX2 = nOldX; nX < nNewWidth; nX++, nX2++ )
                         pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPixel( nY2, nX2 ) );
 
-                ReleaseAccess( pWriteAcc );
+                pWriteAcc.reset();
                 bRet = true;
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
 
             if( bRet )
                 ImplAssignWithSize( aNewBmp );
@@ -814,8 +813,8 @@ bool Bitmap::CopyPixel( const Rectangle& rRectDst,
 
                 if( nNextIndex )
                 {
-                    BitmapReadAccess*   pSrcAcc = pSrc->AcquireReadAccess();
-                    BitmapWriteAccess*  pDstAcc = AcquireWriteAccess();
+                    ScopedReadAccess    pSrcAcc(*pSrc);
+                    ScopedWriteAccess   pDstAcc(*this);
 
                     if( pSrcAcc && pDstAcc )
                     {
@@ -841,12 +840,6 @@ bool Bitmap::CopyPixel( const Rectangle& rRectDst,
                                 pDstAcc->SetPaletteColor( (sal_uInt16) nNextIndex++, rSrcCol );
                         }
                     }
-
-                    if( pSrcAcc )
-                        ReleaseAccess( pSrcAcc );
-
-                    if( pDstAcc )
-                        ReleaseAccess( pDstAcc );
                 }
             }
 
@@ -854,11 +847,11 @@ bool Bitmap::CopyPixel( const Rectangle& rRectDst,
 
             if( !aRectSrc.IsEmpty() )
             {
-                BitmapReadAccess* pReadAcc = pSrc->AcquireReadAccess();
+                ScopedReadAccess pReadAcc(*pSrc);
 
                 if( pReadAcc )
                 {
-                    BitmapWriteAccess* pWriteAcc = AcquireWriteAccess();
+                    ScopedWriteAccess pWriteAcc(*this);
 
                     if( pWriteAcc )
                     {
@@ -893,11 +886,11 @@ bool Bitmap::CopyPixel( const Rectangle& rRectDst,
                                 for( long nSrcX = aRectSrc.Left(), nDstX = aRectDst.Left(); nSrcX < nSrcEndX; nSrcX++, nDstX++ )
                                     pWriteAcc->SetPixel( nDstY, nDstX, pReadAcc->GetPixel( nSrcY, nSrcX ) );
 
-                        ReleaseAccess( pWriteAcc );
+                        pWriteAcc.reset();
                         bRet = ( nWidth > 0L ) && ( nHeight > 0L );
                     }
 
-                    ReleaseAccess( pReadAcc );
+                    pReadAcc.reset();
                 }
             }
         }
@@ -909,7 +902,7 @@ bool Bitmap::CopyPixel( const Rectangle& rRectDst,
 
             if( !aRectSrc.IsEmpty() && ( aRectSrc != aRectDst ) )
             {
-                BitmapWriteAccess*  pWriteAcc = AcquireWriteAccess();
+                ScopedWriteAccess   pWriteAcc(*this);
 
                 if( pWriteAcc )
                 {
@@ -949,7 +942,7 @@ bool Bitmap::CopyPixel( const Rectangle& rRectDst,
                                 pWriteAcc->SetPixel( nYN, nXN, pWriteAcc->GetPixel( nY, nX ) );
                     }
 
-                    ReleaseAccess( pWriteAcc );
+                    pWriteAcc.reset();
                     bRet = true;
                 }
             }
@@ -982,11 +975,11 @@ bool Bitmap::CopyPixel_AlphaOptimized( const Rectangle& rRectDst, const Rectangl
 
             if( !aRectSrc.IsEmpty() )
             {
-                BitmapReadAccess* pReadAcc = pSrc->AcquireReadAccess();
+                ScopedReadAccess pReadAcc(*pSrc);
 
                 if( pReadAcc )
                 {
-                    BitmapWriteAccess* pWriteAcc = AcquireWriteAccess();
+                    ScopedWriteAccess pWriteAcc(*this);
 
                     if( pWriteAcc )
                     {
@@ -1000,11 +993,11 @@ bool Bitmap::CopyPixel_AlphaOptimized( const Rectangle& rRectDst, const Rectangl
                             for( long nSrcX = aRectSrc.Left(), nDstX = aRectDst.Left(); nSrcX < nSrcEndX; nSrcX++, nDstX++ )
                                 pWriteAcc->SetPixel( nDstY, nDstX, pReadAcc->GetPixel( nSrcY, nSrcX ) );
 
-                        ReleaseAccess( pWriteAcc );
+                        pWriteAcc.reset();
                         bRet = ( nWidth > 0L ) && ( nHeight > 0L );
                     }
 
-                    ReleaseAccess( pReadAcc );
+                    pReadAcc.reset();
                 }
             }
         }
@@ -1016,7 +1009,7 @@ bool Bitmap::CopyPixel_AlphaOptimized( const Rectangle& rRectDst, const Rectangl
 
             if( !aRectSrc.IsEmpty() && ( aRectSrc != aRectDst ) )
             {
-                BitmapWriteAccess*  pWriteAcc = AcquireWriteAccess();
+                ScopedWriteAccess   pWriteAcc(*this);
 
                 if( pWriteAcc )
                 {
@@ -1056,7 +1049,7 @@ bool Bitmap::CopyPixel_AlphaOptimized( const Rectangle& rRectDst, const Rectangl
                                 pWriteAcc->SetPixel( nYN, nXN, pWriteAcc->GetPixel( nY, nX ) );
                     }
 
-                    ReleaseAccess( pWriteAcc );
+                    pWriteAcc.reset();
                     bRet = true;
                 }
             }
@@ -1077,13 +1070,13 @@ bool Bitmap::Expand( sal_uLong nDX, sal_uLong nDY, const Color* pInitColor )
         const long          nWidth = aSizePixel.Width();
         const long          nHeight = aSizePixel.Height();
         const Size          aNewSize( nWidth + nDX, nHeight + nDY );
-        BitmapReadAccess*   pReadAcc = AcquireReadAccess();
+        ScopedReadAccess    pReadAcc(*this);
 
         if( pReadAcc )
         {
             BitmapPalette       aBmpPal( pReadAcc->GetPalette() );
             Bitmap              aNewBmp( aNewSize, GetBitCount(), &aBmpPal );
-            BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess   pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -1112,11 +1105,11 @@ bool Bitmap::Expand( sal_uLong nDX, sal_uLong nDY, const Color* pInitColor )
                         for( nX = 0; nX < nNewWidth; nX++ )
                             pWriteAcc->SetPixel( nY, nX, aColor );
 
-                ReleaseAccess( pWriteAcc );
+                pWriteAcc.reset();
                 bRet = true;
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
 
             if( bRet )
                 ImplAssignWithSize( aNewBmp );
@@ -1129,12 +1122,12 @@ bool Bitmap::Expand( sal_uLong nDX, sal_uLong nDY, const Color* pInitColor )
 Bitmap Bitmap::CreateMask( const Color& rTransColor, sal_uLong nTol ) const
 {
     Bitmap              aNewBmp( GetSizePixel(), 1 );
-    BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+    ScopedWriteAccess   pWriteAcc(aNewBmp);
     bool                bRet = false;
 
     if( pWriteAcc )
     {
-        BitmapReadAccess* pReadAcc = const_cast<Bitmap*>(this)->AcquireReadAccess();
+        ScopedReadAccess pReadAcc(const_cast<Bitmap&>(*this));
 
         if( pReadAcc )
         {
@@ -1298,11 +1291,11 @@ Bitmap Bitmap::CreateMask( const Color& rTransColor, sal_uLong nTol ) const
                 }
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
             bRet = true;
         }
 
-        ReleaseAccess( pWriteAcc );
+        pWriteAcc.reset();
     }
 
     if( bRet )
@@ -1318,9 +1311,9 @@ Bitmap Bitmap::CreateMask( const Color& rTransColor, sal_uLong nTol ) const
 
 vcl::Region Bitmap::CreateRegion( const Color& rColor, const Rectangle& rRect ) const
 {
-    vcl::Region              aRegion;
+    vcl::Region         aRegion;
     Rectangle           aRect( rRect );
-    BitmapReadAccess*   pReadAcc = const_cast<Bitmap*>(this)->AcquireReadAccess();
+    ScopedReadAccess    pReadAcc(const_cast<Bitmap&>(*this));
 
     aRect.Intersection( Rectangle( Point(), GetSizePixel() ) );
     aRect.Justify();
@@ -1413,7 +1406,7 @@ vcl::Region Bitmap::CreateRegion( const Color& rColor, const Rectangle& rRect )
         //aRegion.ImplEndAddRect();
         //aRegion.SetRegionRectangles(aRectangles);
 
-        ReleaseAccess( pReadAcc );
+        pReadAcc.reset();
     }
     else
         aRegion = aRect;
@@ -1423,8 +1416,8 @@ vcl::Region Bitmap::CreateRegion( const Color& rColor, const Rectangle& rRect )
 
 bool Bitmap::Replace( const Bitmap& rMask, const Color& rReplaceColor )
 {
-    BitmapReadAccess*   pMaskAcc = ( (Bitmap&) rMask ).AcquireReadAccess();
-    BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+    ScopedReadAccess    pMaskAcc( const_cast<Bitmap&>(rMask) );
+    ScopedWriteAccess   pAcc(*this);
     bool                bRet = false;
 
     if( pMaskAcc && pAcc )
@@ -1487,18 +1480,15 @@ bool Bitmap::Replace( const Bitmap& rMask, const Color& rReplaceColor )
         bRet = true;
     }
 
-    ReleaseAccess( pMaskAcc );
-    ReleaseAccess( pAcc );
-
     return bRet;
 }
 
 bool Bitmap::Replace( const AlphaMask& rAlpha, const Color& rMergeColor )
 {
     Bitmap              aNewBmp( GetSizePixel(), 24 );
-    BitmapReadAccess*   pAcc = AcquireReadAccess();
-    BitmapReadAccess*   pAlphaAcc = ( (AlphaMask&) rAlpha ).AcquireReadAccess();
-    BitmapWriteAccess*  pNewAcc = aNewBmp.AcquireWriteAccess();
+    ScopedReadAccess    pAcc(*this);
+    AlphaMask::ScopedReadAccess pAlphaAcc(const_cast<AlphaMask&>(rAlpha));
+    ScopedWriteAccess   pNewAcc(aNewBmp);
     bool                bRet = false;
 
     if( pAcc && pAlphaAcc && pNewAcc )
@@ -1519,9 +1509,9 @@ bool Bitmap::Replace( const AlphaMask& rAlpha, const Color& rMergeColor )
         bRet = true;
     }
 
-    ReleaseAccess( pAcc );
-    ReleaseAccess( pAlphaAcc );
-    ReleaseAccess( pNewAcc );
+    pAcc.reset();
+    pAlphaAcc.reset();
+    pNewAcc.reset();
 
     if( bRet )
     {
@@ -1557,7 +1547,7 @@ bool Bitmap::Replace( const Color& rSearchColor, const Color& rReplaceColor, sal
     if( 1 == GetBitCount() )
         Convert( BMP_CONVERSION_4BIT_COLORS );
 
-    BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+    ScopedWriteAccess   pAcc(*this);
     bool                bRet = false;
 
     if( pAcc )
@@ -1604,7 +1594,7 @@ bool Bitmap::Replace( const Color& rSearchColor, const Color& rReplaceColor, sal
             }
         }
 
-        ReleaseAccess( pAcc );
+        pAcc.reset();
         bRet = true;
     }
 
@@ -1619,7 +1609,7 @@ bool Bitmap::Replace( const Color* pSearchColors, const Color* pReplaceColors,
     if( 1 == GetBitCount() )
         Convert( BMP_CONVERSION_4BIT_COLORS );
 
-    BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+    ScopedWriteAccess   pAcc(*this);
     bool                bRet = false;
 
     if( pAcc )
@@ -1703,7 +1693,7 @@ bool Bitmap::Replace( const Color* pSearchColors, const Color* pReplaceColors,
         if( !_pTols )
             delete[] pTols;
 
-        ReleaseAccess( pAcc );
+        pAcc.reset();
         bRet = true;
     }
 
@@ -1728,8 +1718,8 @@ Bitmap Bitmap::CreateDisplayBitmap( OutputDevice* pDisplay )
 
 bool Bitmap::CombineSimple( const Bitmap& rMask, BmpCombine eCombine )
 {
-    BitmapReadAccess*   pMaskAcc = ( (Bitmap&) rMask ).AcquireReadAccess();
-    BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+    ScopedReadAccess    pMaskAcc(const_cast<Bitmap&>(rMask));
+    ScopedWriteAccess   pAcc(*this);
     bool                bRet = false;
 
     if( pMaskAcc && pAcc )
@@ -1857,9 +1847,6 @@ bool Bitmap::CombineSimple( const Bitmap& rMask, BmpCombine eCombine )
         bRet = true;
     }
 
-    ReleaseAccess( pMaskAcc );
-    ReleaseAccess( pAcc );
-
     return bRet;
 }
 
@@ -1872,8 +1859,9 @@ bool Bitmap::Blend( const AlphaMask& rAlpha, const Color& rBackgroundColor )
     if( GetBitCount() <= 8 )
         Convert( BMP_CONVERSION_24BIT );
 
-    BitmapReadAccess*   pAlphaAcc = const_cast<AlphaMask&>(rAlpha).AcquireReadAccess();
-    BitmapWriteAccess*  pAcc = AcquireWriteAccess();
+    AlphaMask::ScopedReadAccess pAlphaAcc(const_cast<AlphaMask&>(rAlpha));
+
+    ScopedWriteAccess   pAcc(*this);
     bool                bRet = false;
 
     if( pAlphaAcc && pAcc )
@@ -1890,9 +1878,6 @@ bool Bitmap::Blend( const AlphaMask& rAlpha, const Color& rBackgroundColor )
         bRet = true;
     }
 
-    ReleaseAccess( pAlphaAcc );
-    ReleaseAccess( pAcc );
-
     return bRet;
 }
 
diff --git a/vcl/source/gdi/bitmap3.cxx b/vcl/source/gdi/bitmap3.cxx
index e4f7acd8bb6e..d602f6321dd4 100644
--- a/vcl/source/gdi/bitmap3.cxx
+++ b/vcl/source/gdi/bitmap3.cxx
@@ -346,13 +346,13 @@ bool Bitmap::Convert( BmpConversion eConversion )
 
 bool Bitmap::ImplMakeMono( sal_uInt8 cThreshold )
 {
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
+    ScopedReadAccess pReadAcc(*this);
     bool bRet = false;
 
     if( pReadAcc )
     {
         Bitmap aNewBmp( GetSizePixel(), 1 );
-        BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess pWriteAcc(aNewBmp);
 
         if( pWriteAcc )
         {
@@ -395,11 +395,11 @@ bool Bitmap::ImplMakeMono( sal_uInt8 cThreshold )
                 }
             }
 
-            ReleaseAccess( pWriteAcc );
+            pWriteAcc.reset();
             bRet = true;
         }
 
-        ReleaseAccess( pReadAcc );
+        pReadAcc.reset();
 
         if( bRet )
         {
@@ -418,13 +418,13 @@ bool Bitmap::ImplMakeMono( sal_uInt8 cThreshold )
 
 bool Bitmap::ImplMakeMonoDither()
 {
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
+    ScopedReadAccess pReadAcc(*this);
     bool bRet = false;
 
     if( pReadAcc )
     {
         Bitmap aNewBmp( GetSizePixel(), 1 );
-        BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess pWriteAcc(aNewBmp);
 
         if( pWriteAcc )
         {
@@ -470,11 +470,11 @@ bool Bitmap::ImplMakeMonoDither()
                 }
             }
 
-            ReleaseAccess( pWriteAcc );
+            pWriteAcc.reset();
             bRet = true;
         }
 
-        ReleaseAccess( pReadAcc );
+        pReadAcc.reset();
 
         if( bRet )
         {
@@ -495,7 +495,7 @@ bool Bitmap::ImplMakeGreyscales( sal_uInt16 nGreys )
 {
     SAL_WARN_IF( nGreys != 16 && nGreys != 256, "vcl", "Only 16 or 256 greyscales are supported!" );
 
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
+    ScopedReadAccess pReadAcc(*this);
     bool bRet = false;
 
     if( pReadAcc )
@@ -510,7 +510,7 @@ bool Bitmap::ImplMakeGreyscales( sal_uInt16 nGreys )
         if( bPalDiffers )
         {
             Bitmap aNewBmp( GetSizePixel(), ( nGreys == 16 ) ? 4 : 8, &rPal );
-            BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -576,11 +576,11 @@ bool Bitmap::ImplMakeGreyscales( sal_uInt16 nGreys )
                             pWriteAcc->SetPixelIndex( nY, nX, (pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >> nShift );
                 }
 
-                ReleaseAccess( pWriteAcc );
+                pWriteAcc.reset();
                 bRet = true;
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
 
             if( bRet )
             {
@@ -595,7 +595,7 @@ bool Bitmap::ImplMakeGreyscales( sal_uInt16 nGreys )
         }
         else
         {
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
             bRet = true;
         }
     }
@@ -809,7 +809,7 @@ bool Bitmap::ImplConvertDown(sal_uInt16 nBitCount, Color* pExtColor)
 bool Bitmap::ImplConvertGhosted()
 {
     Bitmap aNewBmp;
-    BitmapReadAccess* pR = AcquireReadAccess();
+    ScopedReadAccess pR(*this);
     bool bRet = false;
 
     if( pR )
@@ -827,12 +827,11 @@ bool Bitmap::ImplConvertGhosted()
             }
 
             aNewBmp = Bitmap( GetSizePixel(), GetBitCount(), &aNewPal );
-            BitmapWriteAccess* pW = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess pW(aNewBmp);
 
             if( pW )
             {
                 pW->CopyBuffer( *pR );
-                ReleaseAccess( pW );
                 bRet = true;
             }
         }
@@ -840,7 +839,7 @@ bool Bitmap::ImplConvertGhosted()
         {
             aNewBmp = Bitmap( GetSizePixel(), 24 );
 
-            BitmapWriteAccess* pW = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess pW(aNewBmp);
 
             if( pW )
             {
@@ -858,12 +857,11 @@ bool Bitmap::ImplConvertGhosted()
                     }
                 }
 
-                ReleaseAccess( pW );
                 bRet = true;
             }
         }
 
-        ReleaseAccess( pR );
+        pR.reset();
     }
 
     if( bRet )
@@ -1081,12 +1079,12 @@ bool Bitmap::ImplScaleFast( const double& rScaleX, const double& rScaleY )
 
     if( nNewWidth && nNewHeight )
     {
-        BitmapReadAccess* pReadAcc = AcquireReadAccess();
+        ScopedReadAccess pReadAcc(*this);
 
         if(pReadAcc)
         {
             Bitmap aNewBmp( Size( nNewWidth, nNewHeight ), GetBitCount(), &pReadAcc->GetPalette() );
-            BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -1127,9 +1125,9 @@ bool Bitmap::ImplScaleFast( const double& rScaleX, const double& rScaleY )
                     bRet = true;
                 }
 
-                ReleaseAccess( pWriteAcc );
+                pWriteAcc.reset();
             }
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
 
             if( bRet )
                 ImplAssignWithSize( aNewBmp );
@@ -1148,13 +1146,13 @@ bool Bitmap::ImplScaleInterpolate( const double& rScaleX, const double& rScaleY
 
     if( ( nNewWidth > 1 ) && ( nNewHeight > 1 ) )
     {
-        BitmapReadAccess* pReadAcc = AcquireReadAccess();
+        ScopedReadAccess pReadAcc(*this);
         if( pReadAcc )
         {
             long nWidth = pReadAcc->Width();
             long nHeight = pReadAcc->Height();
             Bitmap aNewBmp( Size( nNewWidth, nHeight ), 24 );
-            BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -1231,8 +1229,8 @@ bool Bitmap::ImplScaleInterpolate( const double& rScaleX, const double& rScaleY
                 bRet = true;
             }
 
-            ReleaseAccess( pReadAcc );
-            ReleaseAccess( pWriteAcc );
+            pReadAcc.reset();
+            pWriteAcc.reset();
 
             if( bRet )
             {
@@ -1240,8 +1238,8 @@ bool Bitmap::ImplScaleInterpolate( const double& rScaleX, const double& rScaleY
                 const Bitmap aOriginal(*this);
                 *this = aNewBmp;
                 aNewBmp = Bitmap( Size( nNewWidth, nNewHeight ), 24 );
-                pReadAcc = AcquireReadAccess();
-                pWriteAcc = aNewBmp.AcquireWriteAccess();
+                pReadAcc = ScopedReadAccess(*this);
+                pWriteAcc = ScopedWriteAccess(aNewBmp);
 
                 if( pReadAcc && pWriteAcc )
                 {
@@ -1304,8 +1302,8 @@ bool Bitmap::ImplScaleInterpolate( const double& rScaleX, const double& rScaleY
                     bRet = true;
                 }
 
-                ReleaseAccess( pReadAcc );
-                ReleaseAccess( pWriteAcc );
+                pReadAcc.reset();
+                pWriteAcc.reset();
 
                 if( bRet )
                 {
@@ -1344,9 +1342,9 @@ bool Bitmap::Dither( BmpDitherFlags nDitherFlags )
 
 bool Bitmap::ImplDitherMatrix()
 {
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
+    ScopedReadAccess pReadAcc(*this);
     Bitmap aNewBmp( GetSizePixel(), 8 );
-    BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+    ScopedWriteAccess pWriteAcc(aNewBmp);
     bool bRet = false;
 
     if( pReadAcc && pWriteAcc )
@@ -1393,8 +1391,8 @@ bool Bitmap::ImplDitherMatrix()
         bRet = true;
     }
 
-    ReleaseAccess( pReadAcc );
-    ReleaseAccess( pWriteAcc );
+    pReadAcc.reset();
+    pWriteAcc.reset();
 
     if( bRet )
     {
@@ -1417,9 +1415,9 @@ bool Bitmap::ImplDitherFloyd()
 
     if( ( aSize.Width() > 3 ) && ( aSize.Height() > 2 ) )
     {
-        BitmapReadAccess* pReadAcc = AcquireReadAccess();
+        ScopedReadAccess pReadAcc(*this);
         Bitmap aNewBmp( GetSizePixel(), 8 );
-        BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess pWriteAcc(aNewBmp);
 
         if( pReadAcc && pWriteAcc )
         {
@@ -1528,8 +1526,8 @@ bool Bitmap::ImplDitherFloyd()
             bRet = true;
         }
 
-        ReleaseAccess( pReadAcc );
-        ReleaseAccess( pWriteAcc );
+        pReadAcc.reset();
+        pWriteAcc.reset();
 
         if( bRet )
         {
@@ -1548,9 +1546,9 @@ bool Bitmap::ImplDitherFloyd()
 
 bool Bitmap::ImplDitherFloyd16()
 {
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
+    ScopedReadAccess pReadAcc(*this);
     Bitmap aNewBmp( GetSizePixel(), 24 );
-    BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess();
+    ScopedWriteAccess pWriteAcc(aNewBmp);
     bool bRet = false;
 
     if( pReadAcc && pWriteAcc )
@@ -1618,8 +1616,8 @@ bool Bitmap::ImplDitherFloyd16()
         bRet = true;
     }
 
-    ReleaseAccess( pReadAcc );
-    ReleaseAccess( pWriteAcc );
+    pReadAcc.reset();
+    pWriteAcc.reset();
 
     if( bRet )
     {
@@ -1659,7 +1657,7 @@ bool Bitmap::ReduceColors( sal_uInt16 nColorCount, BmpReduce eReduce )
 bool Bitmap::ImplReduceSimple( sal_uInt16 nColorCount )
 {
     Bitmap aNewBmp;
-    BitmapReadAccess* pRAcc = AcquireReadAccess();
+    ScopedReadAccess pRAcc(*this);
     const sal_uInt16 nColCount = std::min( nColorCount, (sal_uInt16) 256 );
     sal_uInt16 nBitCount;
     bool bRet = false;
@@ -1675,10 +1673,9 @@ bool Bitmap::ImplReduceSimple( sal_uInt16 nColorCount )
     {
         Octree aOct( *pRAcc, nColCount );
         const BitmapPalette& rPal = aOct.GetPalette();
-        BitmapWriteAccess* pWAcc;
 
         aNewBmp = Bitmap( GetSizePixel(), nBitCount, &rPal );
-        pWAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess pWAcc(aNewBmp);
 
         if( pWAcc )
         {
@@ -1698,11 +1695,11 @@ bool Bitmap::ImplReduceSimple( sal_uInt16 nColorCount )
                         pWAcc->SetPixelIndex( nY, nX, static_cast<sal_uInt8>(aOct.GetBestPaletteIndex( pRAcc->GetPixel( nY, nX ) )) );
             }
 
-            ReleaseAccess( pWAcc );
+            pWAcc.reset();
             bRet = true;
         }
 
-        ReleaseAccess( pRAcc );
+        pRAcc.reset();
     }
 
     if( bRet )
@@ -1740,7 +1737,7 @@ extern "C" int SAL_CALL ImplPopularCmpFnc( const void* p1, const void* p2 )
 
 bool Bitmap::ImplReducePopular( sal_uInt16 nColCount )
 {
-    BitmapReadAccess* pRAcc = AcquireReadAccess();
+    ScopedReadAccess pRAcc(*this);
     sal_uInt16 nBitCount;
     bool bRet = false;
 
@@ -1819,7 +1816,7 @@ bool Bitmap::ImplReducePopular( sal_uInt16 nColCount )
         }
 
         Bitmap aNewBmp( GetSizePixel(), nBitCount, &aNewPal );
-        BitmapWriteAccess* pWAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess pWAcc(aNewBmp);
 
         if( pWAcc )
         {
@@ -1860,12 +1857,12 @@ bool Bitmap::ImplReducePopular( sal_uInt16 nColCount )
                 }
             }
 
-            ReleaseAccess( pWAcc );
+            pWAcc.reset();
             bRet = true;
         }
 
         pCountTable.reset();
-        ReleaseAccess( pRAcc );
+        pRAcc.reset();
 
         if( bRet )
         {
@@ -1883,7 +1880,7 @@ bool Bitmap::ImplReducePopular( sal_uInt16 nColCount )
 
 bool Bitmap::ImplReduceMedian( sal_uInt16 nColCount )
 {
-    BitmapReadAccess* pRAcc = AcquireReadAccess();
+    ScopedReadAccess pRAcc(*this);
     sal_uInt16 nBitCount;
     bool bRet = false;
 
@@ -1901,7 +1898,7 @@ bool Bitmap::ImplReduceMedian( sal_uInt16 nColCount )
     if( pRAcc )
     {
         Bitmap aNewBmp( GetSizePixel(), nBitCount );
-        BitmapWriteAccess* pWAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess pWAcc(aNewBmp);
 
         if( pWAcc )
         {
@@ -1950,11 +1947,11 @@ bool Bitmap::ImplReduceMedian( sal_uInt16 nColCount )
                     pWAcc->SetPixelIndex( nY, nX, static_cast<sal_uInt8>( aMap.GetBestPaletteIndex( pRAcc->GetColor( nY, nX ) )) );
 
             rtl_freeMemory( pColBuf );
-            ReleaseAccess( pWAcc );
+            pWAcc.reset();
             bRet = true;
         }
 
-        ReleaseAccess( pRAcc );
+        pRAcc.reset();
 
         if( bRet )
         {
@@ -2129,7 +2126,7 @@ bool Bitmap::Adjust( short nLuminancePercent, short nContrastPercent,
     }
     else
     {
-        BitmapWriteAccess* pAcc = AcquireWriteAccess();
+        ScopedWriteAccess pAcc(*this);
 
         if( pAcc )
         {
@@ -2252,7 +2249,7 @@ bool Bitmap::Adjust( short nLuminancePercent, short nContrastPercent,
                 }
             }
 
-            ReleaseAccess( pAcc );
+            pAcc.reset();
             bRet = true;
         }
     }
@@ -2265,7 +2262,7 @@ bool Bitmap::ImplConvolutionPass(Bitmap& aNewBitmap, BitmapReadAccess* pReadAcc,
     if (!pReadAcc)
         return false;
 
-    BitmapWriteAccess* pWriteAcc = aNewBitmap.AcquireWriteAccess();
+    ScopedWriteAccess pWriteAcc(aNewBitmap);
     if (!pWriteAcc)
         return false;
 
@@ -2309,7 +2306,6 @@ bool Bitmap::ImplConvolutionPass(Bitmap& aNewBitmap, BitmapReadAccess* pReadAcc,
             pWriteAcc->SetPixel(nDestY, nDestX, aResultColor);
         }
     }
-    ReleaseAccess( pWriteAcc );
     return true;
 }
 
diff --git a/vcl/source/gdi/bitmap4.cxx b/vcl/source/gdi/bitmap4.cxx
index 256832883a0a..63940bd73f7f 100644
--- a/vcl/source/gdi/bitmap4.cxx
+++ b/vcl/source/gdi/bitmap4.cxx
@@ -113,13 +113,13 @@ bool Bitmap::Filter( BmpFilter eFilter, const BmpFilterParam* pFilterParam )
 bool Bitmap::ImplConvolute3( const long* pMatrix )
 {
     const long          nDivisor = 8;
-    BitmapReadAccess*   pReadAcc = AcquireReadAccess();
+    ScopedReadAccess    pReadAcc(*this);
     bool                bRet = false;
 
     if( pReadAcc )
     {
         Bitmap              aNewBmp( GetSizePixel(), 24 );
-        BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess   pWriteAcc(aNewBmp);
 
         if( pWriteAcc )
         {
@@ -246,12 +246,12 @@ bool Bitmap::ImplConvolute3( const long* pMatrix )
             delete[] pColm;
             delete[] pRows;
 
-            Bitmap::ReleaseAccess( pWriteAcc );
+            pWriteAcc.reset();
 
             bRet = true;
         }
 
-        ReleaseAccess( pReadAcc );
+        pReadAcc.reset();
 
         if( bRet )
         {
@@ -270,13 +270,13 @@ bool Bitmap::ImplConvolute3( const long* pMatrix )
 
 bool Bitmap::ImplMedianFilter()
 {
-    BitmapReadAccess*   pReadAcc = AcquireReadAccess();
+    ScopedReadAccess    pReadAcc(*this);
     bool                bRet = false;
 
     if( pReadAcc )
     {
         Bitmap              aNewBmp( GetSizePixel(), 24 );
-        BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess   pWriteAcc(aNewBmp);
 
         if( pWriteAcc )
         {
@@ -405,12 +405,12 @@ bool Bitmap::ImplMedianFilter()
             delete[] pColm;
             delete[] pRows;
 
-            Bitmap::ReleaseAccess( pWriteAcc );
+            pWriteAcc.reset();
 
             bRet = true;
         }
 
-        ReleaseAccess( pReadAcc );
+        pReadAcc.reset();
 
         if( bRet )
         {
@@ -435,12 +435,12 @@ bool Bitmap::ImplSobelGrey()
     {
         bRet = false;
 
-        BitmapReadAccess* pReadAcc = AcquireReadAccess();
+        ScopedReadAccess pReadAcc(*this);
 
         if( pReadAcc )
         {
             Bitmap              aNewBmp( GetSizePixel(), 8, &pReadAcc->GetPalette() );
-            BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess   pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -531,11 +531,11 @@ bool Bitmap::ImplSobelGrey()
 
                 delete[] pHMap;
                 delete[] pVMap;
-                Bitmap::ReleaseAccess( pWriteAcc );
+                pWriteAcc.reset();
                 bRet = true;
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
 
             if( bRet )
             {
@@ -561,12 +561,12 @@ bool Bitmap::ImplEmbossGrey( const BmpFilterParam* pFilterParam )
     {
         bRet = false;
 
-        BitmapReadAccess* pReadAcc = AcquireReadAccess();
+        ScopedReadAccess pReadAcc(*this);
 
         if( pReadAcc )
         {
             Bitmap              aNewBmp( GetSizePixel(), 8, &pReadAcc->GetPalette() );
-            BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+            ScopedWriteAccess   pWriteAcc(aNewBmp);
 
             if( pWriteAcc )
             {
@@ -643,11 +643,11 @@ bool Bitmap::ImplEmbossGrey( const BmpFilterParam* pFilterParam )
 
                 delete[] pHMap;
                 delete[] pVMap;
-                Bitmap::ReleaseAccess( pWriteAcc );
+                pWriteAcc.reset();
                 bRet = true;
             }
 
-            ReleaseAccess( pReadAcc );
+            pReadAcc.reset();
 
             if( bRet )
             {
@@ -668,7 +668,7 @@ bool Bitmap::ImplEmbossGrey( const BmpFilterParam* pFilterParam )
 bool Bitmap::ImplSolarize( const BmpFilterParam* pFilterParam )
 {
     bool                bRet = false;
-    BitmapWriteAccess*  pWriteAcc = AcquireWriteAccess();
+    ScopedWriteAccess   pWriteAcc(*this);
 
     if( pWriteAcc )
     {
@@ -706,7 +706,7 @@ bool Bitmap::ImplSolarize( const BmpFilterParam* pFilterParam )
             }
         }
 
-        ReleaseAccess( pWriteAcc );
+        pWriteAcc.reset();
         bRet = true;
     }
 
@@ -715,7 +715,7 @@ bool Bitmap::ImplSolarize( const BmpFilterParam* pFilterParam )
 
 bool Bitmap::ImplSepia( const BmpFilterParam* pFilterParam )
 {
-    BitmapReadAccess*   pReadAcc = AcquireReadAccess();
+    ScopedReadAccess    pReadAcc(*this);
     bool                bRet = false;
 
     if( pReadAcc )
@@ -736,7 +736,7 @@ bool Bitmap::ImplSepia( const BmpFilterParam* pFilterParam )
         }
 
         Bitmap              aNewBmp( GetSizePixel(), 8, &aSepiaPal );
-        BitmapWriteAccess*  pWriteAcc = aNewBmp.AcquireWriteAccess();
+        ScopedWriteAccess   pWriteAcc(aNewBmp);
 
         if( pWriteAcc )
         {
@@ -775,11 +775,11 @@ bool Bitmap::ImplSepia( const BmpFilterParam* pFilterParam )
                 }
             }
 
-            Bitmap::ReleaseAccess( pWriteAcc );
+            pWriteAcc.reset();
             bRet = true;
         }
 
-        ReleaseAccess( pReadAcc );
+        pReadAcc.reset();
 
         if( bRet )
         {
@@ -961,6 +961,7 @@ bool Bitmap::ImplMosaic( const BmpFilterParam* pFilterParam )
     return bRet;
 }
 
+
 struct PopArtEntry
 {
     sal_uInt32  mnIndex;
@@ -990,7 +991,7 @@ bool Bitmap::ImplPopArt()
     {
         bRet = false;
 
-        BitmapWriteAccess* pWriteAcc = AcquireWriteAccess();
+        ScopedWriteAccess pWriteAcc(*this);
 
         if( pWriteAcc )
         {
@@ -1034,7 +1035,7 @@ bool Bitmap::ImplPopArt()
 
             // cleanup
             delete[] pPopArtTable;
-            ReleaseAccess( pWriteAcc );
+            pWriteAcc.reset();
             bRet = true;
         }
     }
@@ -1135,15 +1136,15 @@ bool Bitmap::ImplSeparableBlurFilter(const double radius)
     // Do horizontal filtering
     ImplBlurContributions( nWidth, aNumberOfContributions, pBlurVector, pWeights, pPixels, pCount);
 
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
+    ScopedReadAccess pReadAcc(*this);
 
     // switch coordinates as convolution pass transposes result
     Bitmap aNewBitmap( Size( nHeight, nWidth ), 24 );
 
-    bool bResult = ImplConvolutionPass( aNewBitmap, pReadAcc, aNumberOfContributions, pWeights, pPixels, pCount );
+    bool bResult = ImplConvolutionPass( aNewBitmap, pReadAcc.get(), aNumberOfContributions, pWeights, pPixels, pCount );
 
     // Cleanup
-    ReleaseAccess( pReadAcc );
+    pReadAcc.reset();
     delete[] pWeights;
     delete[] pPixels;
     delete[] pCount;
@@ -1160,12 +1161,12 @@ bool Bitmap::ImplSeparableBlurFilter(const double radius)
     // Do vertical filtering
     ImplBlurContributions(nHeight, aNumberOfContributions, pBlurVector, pWeights, pPixels, pCount );
 
-    pReadAcc = AcquireReadAccess();
+    pReadAcc = ScopedReadAccess(*this);
     aNewBitmap = Bitmap( Size( nWidth, nHeight ), 24 );
-    bResult = ImplConvolutionPass( aNewBitmap, pReadAcc, aNumberOfContributions, pWeights, pPixels, pCount );
+    bResult = ImplConvolutionPass( aNewBitmap, pReadAcc.get(), aNumberOfContributions, pWeights, pPixels, pCount );
 
     // Cleanup
-    ReleaseAccess( pReadAcc );
+    pReadAcc.reset();
     delete[] pWeights;
     delete[] pCount;
     delete[] pPixels;
@@ -1194,9 +1195,9 @@ bool Bitmap::ImplSeparableUnsharpenFilter(const double radius) {
 
     Bitmap aResultBitmap( Size( nWidth, nHeight ), 24);
 
-    BitmapReadAccess* pReadAccBlur = aBlur.AcquireReadAccess();
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
-    BitmapWriteAccess* pWriteAcc = aResultBitmap.AcquireWriteAccess();
+    ScopedReadAccess pReadAccBlur(aBlur);
+    ScopedReadAccess pReadAcc(*this);
+    ScopedWriteAccess pWriteAcc(aResultBitmap);
 
     BitmapColor aColor, aColorBlur;
 
@@ -1217,9 +1218,9 @@ bool Bitmap::ImplSeparableUnsharpenFilter(const double radius) {
         }
     }
 
-    ReleaseAccess( pWriteAcc );
-    ReleaseAccess( pReadAcc );
-    ReleaseAccess( pReadAccBlur );
+    pWriteAcc.reset();
+    pReadAcc.reset();
+    pReadAccBlur.reset();
     ImplAssignWithSize ( aResultBitmap );
     return true;
 }
@@ -1230,8 +1231,8 @@ bool Bitmap::ImplDuotoneFilter( const sal_uLong nColorOne, const sal_uLong nColo
     const long  nHeight = GetSizePixel().Height();
 
     Bitmap aResultBitmap( GetSizePixel(), 24);
-    BitmapReadAccess* pReadAcc = AcquireReadAccess();
-    BitmapWriteAccess* pWriteAcc = aResultBitmap.AcquireWriteAccess();
+    ScopedReadAccess pReadAcc(*this);
+    ScopedWriteAccess pWriteAcc(aResultBitmap);
     const BitmapColor aColorOne( static_cast< sal_uInt8 >( nColorOne >> 16 ), static_cast< sal_uInt8 >( nColorOne >> 8 ), static_cast< sal_uInt8 >( nColorOne ) );
     const BitmapColor aColorTwo( static_cast< sal_uInt8 >( nColorTwo >> 16 ), static_cast< sal_uInt8 >( nColorTwo >> 8 ), static_cast< sal_uInt8 >( nColorTwo ) );
 
@@ -1249,8 +1250,8 @@ bool Bitmap::ImplDuotoneFilter( const sal_uLong nColorOne, const sal_uLong nColo
         }
     }
 
-    ReleaseAccess( pWriteAcc );
-    ReleaseAccess( pReadAcc );
+    pWriteAcc.reset();
+    pReadAcc.reset();
     ImplAssignWithSize ( aResultBitmap );
     return true;
 }
diff --git a/vcl/source/gdi/bitmapex.cxx b/vcl/source/gdi/bitmapex.cxx
index 808886f9fbb8..e33d0bd0e757 100644
--- a/vcl/source/gdi/bitmapex.cxx
+++ b/vcl/source/gdi/bitmapex.cxx
@@ -728,7 +728,7 @@ sal_uInt8 BitmapEx::GetTransparency(sal_Int32 nX, sal_Int32 nY) const
                 case TransparentType::Color:
                 {
                     Bitmap aTestBitmap(aBitmap);
-                    BitmapReadAccess* pRead = aTestBitmap.AcquireReadAccess();
+                    Bitmap::ScopedReadAccess pRead(aTestBitmap);
 
                     if(pRead)
                     {
@@ -740,7 +740,6 @@ sal_uInt8 BitmapEx::GetTransparency(sal_Int32 nX, sal_Int32 nY) const
                             nTransparency = 0x00;
                         }
 
-                        Bitmap::ReleaseAccess(pRead);
                     }
                     break;
                 }
@@ -749,7 +748,7 @@ sal_uInt8 BitmapEx::GetTransparency(sal_Int32 nX, sal_Int32 nY) const
                     if(!aMask.IsEmpty())
                     {
                         Bitmap aTestBitmap(aMask);
-                        BitmapReadAccess* pRead = aTestBitmap.AcquireReadAccess();
+                        Bitmap::ScopedReadAccess pRead(aTestBitmap);
 
                         if(pRead)
                         {
@@ -766,8 +765,6 @@ sal_uInt8 BitmapEx::GetTransparency(sal_Int32 nX, sal_Int32 nY) const
                                     nTransparency = 0x00;
                                 }
                             }
-
-                            Bitmap::ReleaseAccess(pRead);
                         }
                     }
                     break;
@@ -832,11 +829,11 @@ namespace
         bool bSmooth)
     {
         Bitmap aDestination(rDestinationSize, 24);
-        std::unique_ptr<BitmapWriteAccess> xWrite(aDestination.AcquireWriteAccess());
+        Bitmap::ScopedWriteAccess xWrite(aDestination);
 
         if(xWrite)
         {
-            std::unique_ptr<BitmapReadAccess> xRead((const_cast< Bitmap& >(rSource)).AcquireReadAccess());
+            Bitmap::ScopedReadAccess xRead(const_cast< Bitmap& >(rSource));
 
             if (xRead)
             {
@@ -1016,7 +1013,7 @@ BitmapEx BitmapEx::ModifyBitmapEx(const basegfx::BColorModifierStack& rBColorMod
                     // do NOT use erase; for e.g. 8bit Bitmaps, the nearest color to the given
                     // erase color is determined and used -> this may be different from what is
                     // wanted here. Better create a new bitmap with the needed color explicitely
-                    std::unique_ptr<BitmapReadAccess> xReadAccess(aChangedBitmap.AcquireReadAccess());
+                    Bitmap::ScopedReadAccess xReadAccess(aChangedBitmap);
                     OSL_ENSURE(xReadAccess, "Got no Bitmap ReadAccess ?!?");
 
                     if(xReadAccess)
@@ -1044,7 +1041,7 @@ BitmapEx BitmapEx::ModifyBitmapEx(const basegfx::BColorModifierStack& rBColorMod
         }
         else
         {
-            std::unique_ptr<BitmapWriteAccess> xContent(aChangedBitmap.AcquireWriteAccess());
+            Bitmap::ScopedWriteAccess xContent(aChangedBitmap);
 
             if(xContent)
             {
@@ -1211,8 +1208,8 @@ BitmapEx createBlendFrame(
 
         aContent.Erase(COL_BLACK);
 
-        BitmapWriteAccess* pContent = aContent.AcquireWriteAccess();
-        BitmapWriteAccess* pAlpha = aAlpha.AcquireWriteAccess();
+        Bitmap::ScopedWriteAccess pContent(aContent);
+        AlphaMask::ScopedWriteAccess pAlpha(aAlpha);
 
         if(pContent && pAlpha)
         {
@@ -1287,23 +1284,11 @@ BitmapEx createBlendFrame(
                 }
             }
 
-            Bitmap::ReleaseAccess(pContent);
-            Bitmap::ReleaseAccess(pAlpha);
+            pContent.reset();
+            pAlpha.reset();
 
             pBlendFrameCache->m_aLastResult = BitmapEx(aContent, aAlpha);
         }
-        else
-        {
-            if(pContent)
-            {
-                Bitmap::ReleaseAccess(pContent);
-            }
-
-            if(pAlpha)
-            {
-                Bitmap::ReleaseAccess(pAlpha);
-            }
-        }
     }
 
     return pBlendFrameCache->m_aLastResult;
diff --git a/vcl/source/gdi/dibtools.cxx b/vcl/source/gdi/dibtools.cxx
index 7047fcf5209b..dd7a15c07fb6 100644
--- a/vcl/source/gdi/dibtools.cxx
+++ b/vcl/source/gdi/dibtools.cxx
@@ -892,16 +892,15 @@ bool ImplReadDIBBody( SvStream& rIStm, Bitmap& rBmp, AlphaMask* pBmpAlpha, sal_u
         const Size aSizePixel(aHeader.nWidth, aHeader.nHeight);
         BitmapPalette aDummyPal;
         Bitmap aNewBmp(aSizePixel, nBitCount, &aDummyPal);
-        BitmapWriteAccess* pAcc = aNewBmp.AcquireWriteAccess();
+        Bitmap::ScopedWriteAccess pAcc(aNewBmp);
         if (!pAcc)
             return false;
         if (pAcc->Width() != aHeader.nWidth || pAcc->Height() != aHeader.nHeight)
         {
-            Bitmap::ReleaseAccess(pAcc);
             return false;
         }
         AlphaMask aNewBmpAlpha;
-        BitmapWriteAccess* pAccAlpha = nullptr;
+        AlphaMask::ScopedWriteAccess pAccAlpha;
         bool bAlphaPossible(pBmpAlpha && aHeader.nBitCount == 32);
 
         if (bAlphaPossible)
@@ -923,7 +922,7 @@ bool ImplReadDIBBody( SvStream& rIStm, Bitmap& rBmp, AlphaMask* pBmpAlpha, sal_u
         if (bAlphaPossible)
         {
             aNewBmpAlpha = AlphaMask(aSizePixel);
-            pAccAlpha = aNewBmpAlpha.AcquireWriteAccess();
+            pAccAlpha = AlphaMask::ScopedWriteAccess(aNewBmpAlpha);
         }
 
         // read palette
@@ -943,7 +942,7 @@ bool ImplReadDIBBody( SvStream& rIStm, Bitmap& rBmp, AlphaMask* pBmpAlpha, sal_u
                 pIStm->SeekRel(nOffset - (pIStm->Tell() - nStmPos));
             }
 
-            bRet = ImplReadDIBBits(*pIStm, aHeader, *pAcc, pAccAlpha, bTopDown, bAlphaUsed, nAlignedWidth);
+            bRet = ImplReadDIBBits(*pIStm, aHeader, *pAcc, pAccAlpha.get(), bTopDown, bAlphaUsed, nAlignedWidth);
 
             if(bRet && aHeader.nXPelsPerMeter && aHeader.nYPelsPerMeter)
             {
@@ -958,11 +957,11 @@ bool ImplReadDIBBody( SvStream& rIStm, Bitmap& rBmp, AlphaMask* pBmpAlpha, sal_u
             }
         }
 
-        Bitmap::ReleaseAccess(pAcc);
+        pAcc.reset();
 
         if(bAlphaPossible)
         {
-            Bitmap::ReleaseAccess(pAccAlpha);
+            pAccAlpha.reset();
 
             if(!bAlphaUsed)
             {
@@ -1611,8 +1610,8 @@ bool ImplWriteDIB(
 
     if(aSizePix.Width() && aSizePix.Height())
     {
-        BitmapReadAccess* pAcc = const_cast< Bitmap& >(rSource).AcquireReadAccess();
-        BitmapReadAccess* pAccAlpha = nullptr;
+        Bitmap::ScopedReadAccess pAcc(const_cast< Bitmap& >(rSource));
+        Bitmap::ScopedReadAccess pAccAlpha;
         const SvStreamEndian nOldFormat(rOStm.GetEndian());
         const sal_uLong nOldPos(rOStm.Tell());
 
@@ -1622,7 +1621,7 @@ bool ImplWriteDIB(
 
             if(aSizePixAlpha == aSizePix)
             {
-                pAccAlpha = const_cast< Bitmap* >(pSourceAlpha)->AcquireReadAccess();
+                pAccAlpha = Bitmap::ScopedReadAccess(const_cast< Bitmap& >(*pSourceAlpha));
             }
             else
             {
@@ -1638,21 +1637,18 @@ bool ImplWriteDIB(
             {
                 if(ImplWriteDIBFileHeader(rOStm, *pAcc, nullptr != pSourceAlpha))
                 {
-                    bRet = ImplWriteDIBBody(rSource, rOStm, *pAcc, pAccAlpha, bCompressed);
+                    bRet = ImplWriteDIBBody(rSource, rOStm, *pAcc, pAccAlpha.get(), bCompressed);
                 }
             }
             else
             {
-                bRet = ImplWriteDIBBody(rSource, rOStm, *pAcc, pAccAlpha, bCompressed);
+                bRet = ImplWriteDIBBody(rSource, rOStm, *pAcc, pAccAlpha.get(), bCompressed);
             }
 
-            Bitmap::ReleaseAccess(pAcc);
+            pAcc.reset();
         }
 
-        if (pAccAlpha)
-        {
-            Bitmap::ReleaseAccess(pAccAlpha);
-        }
+        pAccAlpha.reset();
 
         if(!bRet)
         {
diff --git a/vcl/source/gdi/impvect.cxx b/vcl/source/gdi/impvect.cxx
index d3b97e9ec35a..50fdf6f76830 100644
--- a/vcl/source/gdi/impvect.cxx
+++ b/vcl/source/gdi/impvect.cxx
@@ -639,7 +639,7 @@ bool ImplVectorize( const Bitmap& rColorBmp, GDIMetaFile& rMtf,
     VECT_PROGRESS( pProgress, 0 );
 
     std::unique_ptr<Bitmap> xBmp(new Bitmap( rColorBmp ));
-    BitmapReadAccess*   pRAcc = xBmp->AcquireReadAccess();
+    Bitmap::ScopedReadAccess pRAcc(*xBmp);
 
     if( pRAcc )
     {
@@ -681,7 +681,7 @@ bool ImplVectorize( const Bitmap& rColorBmp, GDIMetaFile& rMtf,
         {
             const BitmapColor   aBmpCol( pRAcc->GetPaletteColor( pColorSet[ i ].mnIndex ) );
             const Color         aFindColor( aBmpCol.GetRed(), aBmpCol.GetGreen(), aBmpCol.GetBlue() );
-            std::unique_ptr<ImplVectMap> xMap(ImplExpand( pRAcc, aFindColor ));
+            std::unique_ptr<ImplVectMap> xMap(ImplExpand( pRAcc.get(), aFindColor ));
 
             VECT_PROGRESS( pProgress, FRound( fPercent += fPercentStep_2 ) );
 
@@ -725,7 +725,7 @@ bool ImplVectorize( const Bitmap& rColorBmp, GDIMetaFile& rMtf,
         }
     }
 
-    Bitmap::ReleaseAccess( pRAcc );
+    pRAcc.reset();
     xBmp.reset();
     VECT_PROGRESS( pProgress, 100 );
 
@@ -736,15 +736,14 @@ bool ImplVectorize( const Bitmap& rMonoBmp,
                                     tools::PolyPolygon& rPolyPoly )
 {
     std::unique_ptr<Bitmap> xBmp(new Bitmap( rMonoBmp ));
-    BitmapReadAccess*   pRAcc;
     bool                bRet = false;
 
     if( xBmp->GetBitCount() > 1 )
         xBmp->Convert( BMP_CONVERSION_1BIT_THRESHOLD );
 
-    pRAcc = xBmp->AcquireReadAccess();
-    std::unique_ptr <ImplVectMap> xMap(ImplExpand( pRAcc, COL_BLACK ));
-    Bitmap::ReleaseAccess( pRAcc );
+    Bitmap::ScopedReadAccess pRAcc(*xBmp);
+    std::unique_ptr <ImplVectMap> xMap(ImplExpand( pRAcc.get(), COL_BLACK ));
+    pRAcc.reset();
     xBmp.reset();
 
     if( xMap )
diff --git a/vcl/source/gdi/print2.cxx b/vcl/source/gdi/print2.cxx
index dbd07513906f..53fab0f9f15f 100644
--- a/vcl/source/gdi/print2.cxx
+++ b/vcl/source/gdi/print2.cxx
@@ -215,7 +215,7 @@ void ImplConvertTransparentAction( GDIMetaFile&        o_rMtf,
         if( !aBmpEx.IsAlpha() )
         {
             // blend with mask
-            BitmapReadAccess* pRA = aBmp.AcquireReadAccess();
+            Bitmap::ScopedReadAccess pRA(aBmp);
 
             if( !pRA )
                 return; // what else should I do?
@@ -225,7 +225,7 @@ void ImplConvertTransparentAction( GDIMetaFile&        o_rMtf,
             if( pRA->HasPalette() )
                 aActualColor = pRA->GetBestPaletteColor( aBgColor ).operator Color();
 
-            Bitmap::ReleaseAccess(pRA);
+            pRA.reset();
 
             // did we get true white?
             if( aActualColor.GetColorError( aBgColor ) )