vcl: use unique_ptr for fillcolor, linecolor in bmpacc

Change-Id: I09d00c4492d2866aeb79d1a4818a55f9cdfdc4f0

1 files changed, 100 insertions, 77 deletions

diff --git a/vcl/source/gdi/bmpacc3.cxx b/vcl/source/gdi/bmpacc3.cxx
index 70f23c6b5491..c94fb0060631 100644
--- a/vcl/source/gdi/bmpacc3.cxx
+++ b/vcl/source/gdi/bmpacc3.cxx
@@ -28,28 +28,45 @@
 
 void BitmapWriteAccess::SetLineColor( const Color& rColor )
 {
-    delete mpLineColor;
-
-    if( rColor.GetTransparency() == 255 )
-        mpLineColor = NULL;
+    if (rColor.GetTransparency() == 255)
+    {
+        mpLineColor.reset();
+    }
     else
-        mpLineColor = ( HasPalette() ? new BitmapColor(  (sal_uInt8) GetBestPaletteIndex( rColor ) ) : new BitmapColor( rColor ) );
+    {
+        if (HasPalette())
+        {
+            mpLineColor.reset(new BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rColor))));
+        }
+        else
+        {
+            mpLineColor.reset(new BitmapColor(rColor));
+        }
+    }
 }
 
 void BitmapWriteAccess::SetFillColor()
 {
-    delete mpFillColor;
-    mpFillColor = NULL;
+    mpFillColor.reset();
 }
 
 void BitmapWriteAccess::SetFillColor( const Color& rColor )
 {
-    delete mpFillColor;
-
-    if( rColor.GetTransparency() == 255 )
-        mpFillColor = NULL;
+    if (rColor.GetTransparency() == 255)
+    {
+        mpFillColor.reset();
+    }
     else
-        mpFillColor = ( HasPalette() ? new BitmapColor(  (sal_uInt8) GetBestPaletteIndex( rColor ) ) : new BitmapColor( rColor ) );
+    {
+        if (HasPalette())
+        {
+            mpFillColor.reset(new BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rColor))));
+        }
+        else
+        {
+            mpFillColor.reset(new BitmapColor(rColor));
+        }
+    }
 }
 
 void BitmapWriteAccess::Erase( const Color& rColor )
@@ -57,31 +74,33 @@ void BitmapWriteAccess::Erase( const Color& rColor )
     // convert the color format from RGB to palette index if needed
     // TODO: provide and use Erase( BitmapColor& method)
     BitmapColor aColor = rColor;
-    if( HasPalette() )
-        aColor = BitmapColor( (sal_uInt8)GetBestPaletteIndex( rColor) );
+    if (HasPalette())
+    {
+        aColor = BitmapColor(static_cast<sal_uInt8>(GetBestPaletteIndex(rColor)));
+    }
     // try fast bitmap method first
-    if( ImplFastEraseBitmap( *mpBuffer, aColor ) )
+    if (ImplFastEraseBitmap(*mpBuffer, aColor))
         return;
 
     // use the canonical method to clear the bitmap
-    BitmapColor*    pOldFillColor = mpFillColor ? new BitmapColor( *mpFillColor ) : NULL;
-    const Point     aPoint;
-    const Rectangle aRect( aPoint, maBitmap.GetSizePixel() );
-
-    SetFillColor( rColor );
-    FillRect( aRect );
-    delete mpFillColor;
-    mpFillColor = pOldFillColor;
+    BitmapColor* pOldFillColor = mpFillColor ? new BitmapColor(*mpFillColor) : NULL;
+    const Point aPoint;
+    const Rectangle aRect(aPoint, maBitmap.GetSizePixel());
+
+    SetFillColor(rColor);
+    FillRect(aRect);
+
+    mpFillColor.reset(pOldFillColor);
 }
 
 void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
 {
-    if( mpLineColor )
+    if (mpLineColor)
     {
-        const BitmapColor&  rLineColor = *mpLineColor;
-        long                nX, nY;
+        const BitmapColor& rLineColor = *mpLineColor.get();
+        long nX, nY;
 
-        if ( rStart.X() == rEnd.X() )
+        if (rStart.X() == rEnd.X())
         {
             // Vertical Line
             const long nEndY = rEnd.Y();
@@ -89,7 +108,7 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
             nX = rStart.X();
             nY = rStart.Y();
 
-            if ( nEndY > nY )
+            if (nEndY > nY)
             {
                 for (; nY <= nEndY; nY++ )
                     SetPixel( nY, nX, rLineColor );
@@ -100,7 +119,7 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
                     SetPixel( nY, nX, rLineColor );
             }
         }
-        else if ( rStart.Y() == rEnd.Y() )
+        else if (rStart.Y() == rEnd.Y())
         {
             // Horizontal Line
             const long nEndX = rEnd.X();
@@ -108,29 +127,29 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
             nX = rStart.X();
             nY = rStart.Y();
 
-            if ( nEndX > nX )
+            if (nEndX > nX)
             {
-                for (; nX <= nEndX; nX++ )
-                    SetPixel( nY, nX, rLineColor );
+                for (; nX <= nEndX; nX++)
+                    SetPixel(nY, nX, rLineColor);
             }
             else
             {
-                for (; nX >= nEndX; nX-- )
-                    SetPixel( nY, nX, rLineColor );
+                for (; nX >= nEndX; nX--)
+                    SetPixel(nY, nX, rLineColor);
             }
         }
         else
         {
             const long  nDX = labs( rEnd.X() - rStart.X() );
             const long  nDY = labs( rEnd.Y() - rStart.Y() );
-            long        nX1;
-            long        nY1;
-            long        nX2;
-            long        nY2;
+            long nX1;
+            long nY1;
+            long nX2;
+            long nY2;
 
-            if ( nDX >= nDY )
+            if (nDX >= nDY)
             {
-                if ( rStart.X() < rEnd.X() )
+                if (rStart.X() < rEnd.X())
                 {
                     nX1 = rStart.X();
                     nY1 = rStart.Y();
@@ -145,22 +164,22 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
                     nY2 = rStart.Y();
                 }
 
-                const long  nDYX = ( nDY - nDX ) << 1;
-                const long  nDY2 = nDY << 1;
-                long        nD = nDY2 - nDX;
-                bool        bPos = nY1 < nY2;
+                const long nDYX = (nDY - nDX) << 1;
+                const long nDY2 = nDY << 1;
+                long nD = nDY2 - nDX;
+                bool bPos = nY1 < nY2;
 
-                for ( nX = nX1, nY = nY1; nX <= nX2; nX++ )
+                for (nX = nX1, nY = nY1; nX <= nX2; nX++)
                 {
-                    SetPixel( nY, nX, rLineColor );
+                    SetPixel(nY, nX, rLineColor);
 
-                    if ( nD < 0 )
+                    if (nD < 0)
                         nD += nDY2;
                     else
                     {
                         nD += nDYX;
 
-                        if ( bPos )
+                        if (bPos)
                             nY++;
                         else
                             nY--;
@@ -169,7 +188,7 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
             }
             else
             {
-                if ( rStart.Y() < rEnd.Y() )
+                if (rStart.Y() < rEnd.Y())
                 {
                     nX1 = rStart.X();
                     nY1 = rStart.Y();
@@ -184,22 +203,22 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
                     nY2 = rStart.Y();
                 }
 
-                const long  nDYX = ( nDX - nDY ) << 1;
+                const long  nDYX = (nDX - nDY) << 1;
                 const long  nDY2 = nDX << 1;
-                long        nD = nDY2 - nDY;
-                bool        bPos = nX1 < nX2;
+                long nD = nDY2 - nDY;
+                bool bPos = nX1 < nX2;
 
-                for ( nX = nX1, nY = nY1; nY <= nY2; nY++ )
+                for (nX = nX1, nY = nY1; nY <= nY2; nY++)
                 {
-                    SetPixel( nY, nX, rLineColor );
+                    SetPixel(nY, nX, rLineColor);
 
-                    if ( nD < 0 )
+                    if (nD < 0)
                         nD += nDY2;
                     else
                     {
                         nD += nDYX;
 
-                        if ( bPos )
+                        if (bPos)
                             nX++;
                         else
                             nX--;
@@ -212,39 +231,43 @@ void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
 
 void BitmapWriteAccess::FillRect( const Rectangle& rRect )
 {
-    if( mpFillColor )
+    if (mpFillColor)
     {
-        const BitmapColor&  rFillColor = *mpFillColor;
-        Point               aPoint;
-        Rectangle           aRect( aPoint, maBitmap.GetSizePixel() );
+        const BitmapColor& rFillColor = *mpFillColor.get();
+        Point aPoint;
+        Rectangle aRect(aPoint, maBitmap.GetSizePixel());
 
-        aRect.Intersection( rRect );
+        aRect.Intersection(rRect);
 
-        if( !aRect.IsEmpty() )
+        if (!aRect.IsEmpty())
         {
-            const long  nStartX = rRect.Left();
-            const long  nStartY = rRect.Top();
-            const long  nEndX = rRect.Right();
-            const long  nEndY = rRect.Bottom();
-
-            for( long nY = nStartY; nY <= nEndY; nY++ )
-                for( long nX = nStartX; nX <= nEndX; nX++ )
-                    SetPixel( nY, nX, rFillColor );
+            const long nStartX = rRect.Left();
+            const long nStartY = rRect.Top();
+            const long nEndX = rRect.Right();
+            const long nEndY = rRect.Bottom();
+
+            for (long nY = nStartY; nY <= nEndY; nY++)
+            {
+                for (long nX = nStartX; nX <= nEndX; nX++)
+                {
+                    SetPixel(nY, nX, rFillColor);
+                }
+            }
         }
     }
 }
 
 void BitmapWriteAccess::DrawRect( const Rectangle& rRect )
 {
-    if( mpFillColor )
-        FillRect( rRect );
+    if (mpFillColor)
+        FillRect(rRect);
 
-    if( mpLineColor && ( !mpFillColor || ( *mpFillColor != *mpLineColor ) ) )
+    if (mpLineColor && (!mpFillColor || ( *mpFillColor.get() != *mpLineColor.get())))
     {
-        DrawLine( rRect.TopLeft(), rRect.TopRight() );
-        DrawLine( rRect.TopRight(), rRect.BottomRight() );
-        DrawLine( rRect.BottomRight(), rRect.BottomLeft() );
-        DrawLine( rRect.BottomLeft(), rRect.TopLeft() );
+        DrawLine(rRect.TopLeft(), rRect.TopRight());
+        DrawLine(rRect.TopRight(), rRect.BottomRight());
+        DrawLine(rRect.BottomRight(), rRect.BottomLeft());
+        DrawLine(rRect.BottomLeft(), rRect.TopLeft());
     }
 }