/// <summary>
/// Returns an empty palette (with every color being black, 0x0000)
/// </summary>
public static Palette Empty(int max)
{
Palette result = new Palette(max);
for (int i = 0; i < max; i++)
{
result.Add(new Color(0x0000));
}
return(result);
}
/// <summary>
/// Returns a Palette with the alpha bit of all its colors set to 0
/// </summary>
public static Palette Opacify(Palette palette)
{
Palette result = new Palette(palette.Maximum);
for (int i = 0; i < palette.Count; i++)
{
result.Add(palette[i].SetAlpha(false));
}
return(result);
}
/// <summary>
/// Merges several (up to 16) 16-color palettes together
/// </summary>
public static Palette Merge(Palette[] palettes)
{
if (palettes.Length > 16)
{
throw new Exception("Cannot merge more than 16 palettes together.");
}
Palette result = new Palette(palettes.Length * GBA.Palette.MAX);
for (int p = 0; p < palettes.Length; p++)
{
if (palettes[p].Maximum != 16)
{
throw new Exception("Palette number " + p + " has invalid color amount");
}
result.Add(palettes[p]);
}
return(result);
}
/// <summary>
/// Creates a Palette from a palette file (if its an image file, must be 16 pixels in width)
/// </summary>
public Palette(string filepath, int maximum = MAX)
{
Colors = new List <Color>(maximum);
if (filepath.EndsWith(".png", StringComparison.OrdinalIgnoreCase) ||
filepath.EndsWith(".gif", StringComparison.OrdinalIgnoreCase) ||
filepath.EndsWith(".bmp", StringComparison.OrdinalIgnoreCase))
{
Bitmap source;
try
{
source = new GBA.Bitmap(filepath);
}
catch { throw new Exception("Could not open palette file:\n" + filepath); }
bool addEveryPixel = (source.Width == 16);
int index = 0;
Color color;
for (int y = 0; y < source.Height; y++)
{
for (int x = 0; x < source.Width; x++)
{
color = source.GetColor(x, y);
if (!addEveryPixel && this.Contains(color))
{
continue;
}
else
{
if (this.IsFull)
{
throw new Exception("This palette cannot hold more than " + maximum + " colors.");
}
else
{
this.Colors.Add(color);
index++;
}
}
}
}
}
else if (filepath.EndsWith(".pal", StringComparison.OrdinalIgnoreCase))
{
byte[] palette = File.ReadAllBytes(filepath);
if (palette[0] == 0x43 &&
palette[1] == 0x4C &&
palette[2] == 0x52 &&
palette[3] == 0x58) // 'CLRX' is the header for usenti .pal files
{
string[] file = File.ReadAllLines(filepath);
int channelBits;
int colorAmount;
int parse = 5;
int length = 0;
while (parse + length < file[0].Length && file[0][parse + length] != ' ')
{
length++;
}
channelBits = int.Parse(file[0].Substring(parse, length));
parse += length + 1;
length = 0;
while (parse + length < file[0].Length && file[0][parse + length] != ' ')
{
length++;
}
colorAmount = int.Parse(file[0].Substring(parse, length));
uint color = 0x00000000;
Palette colors = new Palette(colorAmount);
for (int i = 0; i < (colorAmount / 4); i++)
{
parse = 0;
length = 0;
for (int j = 0; j < 4; j++)
{
while (parse + length < file[1 + i].Length &&
file[1 + i][parse + length] != ' ')
{
length++;
}
color = Util.HexToInt(file[1 + i].Substring(parse, length));
colors.Add(new Color(color));
parse += length + 1;
length = 0;
}
}
palette = colors.ToBytes(false);
}
else if (palette.Length != maximum * 2)
{
throw new Exception(
"Cannot load palette, the file given is of invalid length.\n" +
"It should be " + maximum * 2 + " bytes long.");
}
byte[] buffer = new byte[2];
for (int i = 0; i < palette.Length / 2; i++)
{
buffer[0] = palette[i * 2 + 1];
buffer[1] = palette[i * 2];
Colors.Add(new Color(buffer));
}
}
else
{
throw new Exception("Invalid filetype given to load palette.");
}
}