/// <summary>
/// Initializes a new instance of the <see cref="ColourCollection"/> class that contains elements copied from the specified collection.
/// </summary>
/// <param name="collection">The collection whose elements are copied to the new collection.</param>
public ColourCollection(ColourCollection collection)
: this()
{
for (int i = 0; i < collection.Count; i++)
{
this.Add(collection[i]);
#if USENAMEHACK
this.SetName(i, collection.GetName(i));
#endif
}
}
/// <summary>
/// Serializes the specified <see cref="ColourCollection" /> and writes the palette to a file using the specified <see cref="Stream" />.
/// </summary>
/// <param name="stream">The <see cref="Stream" /> used to write the palette.</param>
/// <param name="palette">The <see cref="ColourCollection" /> to serialize.</param>
public override void Serialise(Stream stream, ColourCollection palette)
{
int swatchIndex;
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (palette == null)
{
throw new ArgumentNullException(nameof(palette));
}
swatchIndex = 0;
// TODO: Allow name and columns attributes to be specified
using (StreamWriter writer = new StreamWriter(stream, Encoding.ASCII))
{
writer.WriteLine("GIMP Palette");
writer.WriteLine("Name: ");
writer.WriteLine("Columns: 8");
writer.WriteLine("#");
foreach (Color colour in palette)
{
writer.Write("{0,-3} ", colour.R);
writer.Write("{0,-3} ", colour.G);
writer.Write("{0,-3} ", colour.B);
#if USENAMEHACK
writer.Write(palette.GetName(swatchIndex));
#else
if (colour.IsNamedColor)
{
writer.Write(colour.Name);
}
else
{
writer.Write("#{0:X2}{1:X2}{2:X2} Swatch {3}", colour.R, colour.G, colour.B, swatchIndex);
}
#endif
writer.WriteLine();
swatchIndex++;
}
}
}
protected virtual void WritePalette(Stream stream, ColourCollection palette, AdobePhotoshopColourSwatchFileVersion version, AdobePhotoshopColourSwatchColourSpace colorSpace)
{
int swatchIndex;
this.WriteInt16(stream, (short)version);
this.WriteInt16(stream, (short)palette.Count);
swatchIndex = 0;
foreach (Color colour in palette)
{
short value1;
short value2;
short value3;
short value4;
swatchIndex++;
switch (colorSpace)
{
case AdobePhotoshopColourSwatchColourSpace.RGB:
value1 = (short)(colour.R * 256);
value2 = (short)(colour.G * 256);
value3 = (short)(colour.B * 256);
value4 = 0;
break;
case AdobePhotoshopColourSwatchColourSpace.HSB:
value1 = (short)(colour.GetHue() * 182.04);
value2 = (short)(colour.GetSaturation() * 655.35);
value3 = (short)(colour.GetBrightness() * 655.35);
value4 = 0;
break;
case AdobePhotoshopColourSwatchColourSpace.GRAYSCALE:
if (colour.R == colour.G && colour.R == colour.B)
{
// already grayscale
value1 = (short)(colour.R * 39.0625);
}
else
{
// color is not grayscale, convert
value1 = (short)((colour.R + colour.G + colour.B) / 3.0 * 39.0625);
}
value2 = 0;
value3 = 0;
value4 = 0;
break;
default:
throw new InvalidOperationException("Color space not supported.");
}
this.WriteInt16(stream, (short)colorSpace);
this.WriteInt16(stream, value1);
this.WriteInt16(stream, value2);
this.WriteInt16(stream, value3);
this.WriteInt16(stream, value4);
if (version == AdobePhotoshopColourSwatchFileVersion.VERSION2)
{
string name;
#if USENAMEHACK
name = palette.GetName(swatchIndex - 1);
if (string.IsNullOrEmpty(name))
{
name = string.Format("Swatch {0}", swatchIndex);
}
#else
name = colour.IsNamedColor ? colour.Name : string.Format("Swatch {0}", swatchIndex);
#endif
this.WriteInt32(stream, name.Length);
this.WriteString(stream, name);
}
}
}
