internal int Index; //stores at 1 the first entry, that is biff8 entry 8.
internal bool ColorIsValid(TExcelColor aColor, IFlexCelPalette xls)
{
int RealIndex = Index < 1 ? Index + 8 : Index;
if (RealIndex <= 0 || RealIndex > 56)
{
return(false);
}
if (LastColorStored != aColor)
{
return(false);
}
Color c = xls.GetColorPalette(RealIndex);
//If the color is Theme, it could have changed if the theme palette changed.
if (aColor.ColorType == TColorType.Theme)
{
if (xls.GetColorTheme(aColor.Theme) != LastColorInTheme)
{
return(false);
}
}
return(c.ToArgb() == LastColorInPalette);
}
/// <summary>
/// Creates a new Gradient stop.
/// </summary>
/// <param name="aPosition">Position for the stop.</param>
/// <param name="aColor">Color for the stop.</param>
public TGradientStop(double aPosition, TExcelColor aColor)
{
FPosition = 0;
FColor = aColor; // to compile
Position = aPosition; //to set the real values
Color = aColor;
}
internal static TExcelColor Copy(TExcelColor aColor, IFlexCelPalette Source, IFlexCelPalette Dest)
{
if (aColor.ColorType != TColorType.Indexed)
{
return(aColor); //Themed colors are not converted when copying. Color Acc1 in source will be Color Acc2 in Dest, no matter if Acc and Dest are different.
}
if (Source.GetColorPalette(aColor.Index).ToArgb() == Dest.GetColorPalette(aColor.Index).ToArgb())
{
return(aColor); //Most common case, palettes are the same.
}
return(Source.GetColorPalette(aColor.Index));
}
/// <summary>
/// Returns -1 if obj is more than color, 0 if both colors are the same, and 1 if obj is less than color.
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public int CompareTo(object obj)
{
if (!(obj is TExcelColor))
{
return(-1);
}
TExcelColor Color2 = (TExcelColor)obj;
#if (COMPACTFRAMEWORK && !FRAMEWORK20)
int Result = ((int)ColorType).CompareTo((int)Color2.ColorType);
#else
int Result = ColorType.CompareTo(Color2.ColorType);
#endif
if (Result != 0)
{
return(Result);
}
int TintCompare = Tint.CompareTo(Color2.Tint);
if (TintCompare != 0 && Math.Abs(Tint - Color2.Tint) > 1e-6)
{
return(TintCompare);
}
switch (ColorType)
{
case TColorType.RGB:
return(RGB.CompareTo(Color2.RGB));
case TColorType.Automatic:
#if (COMPACTFRAMEWORK && !FRAMEWORK20)
return(((int)FAutomaticType).CompareTo((int)Color2.FAutomaticType));
#else
return(FAutomaticType.CompareTo(Color2.FAutomaticType));
#endif
case TColorType.Theme:
#if (COMPACTFRAMEWORK && !FRAMEWORK20)
return(((int)Theme).CompareTo((int)Color2.Theme));
#else
return(Theme.CompareTo(Color2.Theme));
#endif
case TColorType.Indexed:
return(FIndex.CompareTo(Color2.FIndex));
}
return(0);
}
internal static TExcelColor FromBiff8(byte[] Data, int CTypePos, int TintPos, int DataPos, bool TintIsInt)
{
int ct = BitConverter.ToUInt16(Data, CTypePos);
double Tint;
if (TintIsInt)
{
int nTint = BitConverter.ToInt16(Data, TintPos);
Tint = nTint / (double)Int16.MaxValue;
}
else
{
Tint = BitConverter.ToDouble(Data, TintPos);
}
if (Tint < -1)
{
Tint = -1; // Just in case nTint was Int16.MinValue. Int16.MinValue < -Int16.MaxValue
}
switch (ct)
{
case 0: //Automatic
return(TExcelColor.Automatic);
case 1: //Indexed
return(TExcelColor.FromBiff8ColorIndex(BitConverter.ToUInt32(Data, DataPos)));
case 2: // RGB
unchecked
{
UInt32 BGR = BitConverter.ToUInt32(Data, DataPos);
return(TExcelColor.FromArgb((byte)(BGR), (byte)(BGR >> 8), (byte)(BGR >> 16), Tint));
}
case 3: //Theme
return(TExcelColor.FromTheme((TThemeColor)(BitConverter.ToUInt32(Data, DataPos)), Tint));
}
return(TExcelColor.Automatic);
}
public bool PaletteContainsColor(TExcelColor value)
{
return(false);
}