vcl: add initializer_list constructor to BitmapPalette and use it

Change-Id: Ib24266e435765bd5e05193aea5cee61d7a9346b0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/113133
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

cppcanvas/source/mtfrenderer/implrenderer.cxx

@@ -202,9 +202,9 @@ namespace
                               const ::Color& rMaskColor )
     {
         const ::Color aWhite( COL_WHITE );
-        BitmapPalette aBiLevelPalette(2);
-        aBiLevelPalette[0] = aWhite;
-        aBiLevelPalette[1] = rMaskColor;
+        BitmapPalette aBiLevelPalette{
+            aWhite, rMaskColor
+        };
 
         Bitmap aMask( rBitmap.CreateMask( aWhite ));
         Bitmap aSolid( rBitmap.GetSizePixel(),

drawinglayer/source/tools/wmfemfhelper.cxx

@@ -670,10 +670,9 @@ namespace wmfemfhelper
     static BitmapEx createMaskBmpEx(const Bitmap& rBitmap, const Color& rMaskColor)
     {
         const Color aWhite(COL_WHITE);
-        BitmapPalette aBiLevelPalette(2);
-
-        aBiLevelPalette[0] = aWhite;
-        aBiLevelPalette[1] = rMaskColor;
+        BitmapPalette aBiLevelPalette {
+            aWhite, rMaskColor
+        };
 
         Bitmap aMask(rBitmap.CreateMask(aWhite));
         Bitmap aSolid(rBitmap.GetSizePixel(), vcl::PixelFormat::N1_BPP, &aBiLevelPalette);

filter/source/msfilter/util.cxx

@@ -1334,15 +1334,12 @@ sal_uInt8 TransColToIco( const Color& rCol )
     case sal_uInt32(COL_AUTO):          nCol = 0;   break;
 
     default:
-        static const Color aColArr[ 16 ] = {
+        static const BitmapPalette aBmpPal {
             COL_BLACK,      COL_LIGHTBLUE,  COL_LIGHTCYAN,  COL_LIGHTGREEN,
             COL_LIGHTMAGENTA,COL_LIGHTRED,  COL_YELLOW,     COL_WHITE,
             COL_BLUE,       COL_CYAN,       COL_GREEN,      COL_MAGENTA,
             COL_RED,        COL_BROWN,      COL_GRAY,       COL_LIGHTGRAY
         };
-        BitmapPalette aBmpPal(16);
-        for( sal_uInt16 i = 0; i < 16; ++i )
-            aBmpPal[i] = aColArr[ i ];
 
         nCol = static_cast< sal_uInt8 >(GetBestIndex(aBmpPal, rCol) + 1);
         break;

include/vcl/BitmapPalette.hxx

@@ -57,6 +57,10 @@ public:
     {
     }
 
+    BitmapPalette(std::initializer_list<BitmapColor> aBitmapColor) : maBitmapColor(aBitmapColor)
+    {
+    }
+
     BitmapPalette(sal_uInt16 nCount)
         : maBitmapColor(nCount)
     {