unsafe private void UpdateUnmanaged()
{
Debug.Assert(_palette != null && !_palette.IsInvalid);
int numColors = Math.Min(256, _colors.Count);
ImagePaletteColor[] paletteColorArray = new ImagePaletteColor[numColors];
for (int i = 0; i < numColors; ++i)
{
Color color = _colors[i];
paletteColorArray[i].B = color.B;
paletteColorArray[i].G = color.G;
paletteColorArray[i].R = color.R;
paletteColorArray[i].A = color.A;
}
fixed(void *paletteColorArrayPinned = paletteColorArray)
{
HRESULT.Check(UnsafeNativeMethods.WICPalette.InitializeCustom(
_palette,
(IntPtr)paletteColorArrayPinned,
numColors));
}
}
private void UpdateManaged()
{
Debug.Assert(_palette != null && !_palette.IsInvalid);
int numColors = 0;
int cActualColors = 0;
HRESULT.Check(UnsafeNativeMethods.WICPalette.GetColorCount(_palette,
out numColors));
List <Color> colors = new List <Color>();
if (numColors < 1 || numColors > 256)
{
throw new InvalidOperationException(SR.Get(SRID.Image_PaletteZeroColors, null));
}
else
{
ImagePaletteColor[] paletteColorArray = new ImagePaletteColor[numColors];
unsafe
{
fixed(void *paletteColorArrayPinned = paletteColorArray)
{
HRESULT.Check(UnsafeNativeMethods.WICPalette.GetColors(
_palette,
numColors,
(IntPtr)paletteColorArrayPinned,
out cActualColors));
Debug.Assert(cActualColors == numColors);
}
}
for (int i = 0; i < numColors; ++i)
{
ImagePaletteColor c = paletteColorArray[i];
colors.Add(Color.FromArgb(c.A, c.R, c.G, c.B));
}
}
_colors = new PartialList <Color>(colors);
}
private void UpdateManaged()
{
Debug.Assert(_palette != null && !_palette.IsInvalid);
int numColors = 0;
int cActualColors = 0;
HRESULT.Check(UnsafeNativeMethods.WICPalette.GetColorCount(_palette,
out numColors));
List<Color> colors = new List<Color>();
if (numColors < 1 || numColors > 256)
{
throw new InvalidOperationException(SR.Get(SRID.Image_PaletteZeroColors, null));
}
else
{
ImagePaletteColor[] paletteColorArray = new ImagePaletteColor[numColors];
unsafe
{
fixed(void* paletteColorArrayPinned = paletteColorArray)
{
HRESULT.Check(UnsafeNativeMethods.WICPalette.GetColors(
_palette,
numColors,
(IntPtr)paletteColorArrayPinned,
out cActualColors));
Debug.Assert(cActualColors == numColors);
}
}
for (int i = 0; i < numColors; ++i)
{
ImagePaletteColor c = paletteColorArray[i];
colors.Add(Color.FromArgb(c.A, c.R, c.G, c.B));
}
}
_colors = new PartialList<Color>(colors);
}
unsafe private void UpdateUnmanaged()
{
Debug.Assert(_palette != null && !_palette.IsInvalid);
int numColors = Math.Min(256, _colors.Count);
ImagePaletteColor[] paletteColorArray = new ImagePaletteColor[numColors];
for (int i = 0; i < numColors; ++i)
{
Color color = _colors[i];
paletteColorArray[i].B = color.B;
paletteColorArray[i].G = color.G;
paletteColorArray[i].R = color.R;
paletteColorArray[i].A = color.A;
}
fixed (void* paletteColorArrayPinned = paletteColorArray)
{
HRESULT.Check(UnsafeNativeMethods.WICPalette.InitializeCustom(
_palette,
(IntPtr)paletteColorArrayPinned,
numColors));
}
}