private void UpdateRecentColors(ColorItem colorItem)
{
if (!RecentColors.Contains(colorItem))
RecentColors.Add(colorItem);
if (RecentColors.Count > 10) //don't allow more than ten, maybe make a property that can be set by the user.
RecentColors.RemoveAt(0);
}
/// <summary>
/// Method compares 2 objects and returns an int value to indicate equality,
/// less, or greater value.
/// </summary>
/// <param name="firstItem"></param>
/// <param name="secondItem"></param>
/// <returns></returns>
public int Compare(object firstItem, object secondItem)
{
if (firstItem == null || secondItem == null)
{
return(-1);
}
ColorItem colorItem1 = (ColorItem)firstItem;
ColorItem colorItem2 = (ColorItem)secondItem;
if ((colorItem1.Color == null) || !colorItem1.Color.HasValue ||
(colorItem2.Color == null) || !colorItem2.Color.HasValue)
{
return(-1);
}
System.Drawing.Color drawingColor1 = System.Drawing.Color.FromArgb(colorItem1.Color.Value.A, colorItem1.Color.Value.R, colorItem1.Color.Value.G, colorItem1.Color.Value.B);
System.Drawing.Color drawingColor2 = System.Drawing.Color.FromArgb(colorItem2.Color.Value.A, colorItem2.Color.Value.R, colorItem2.Color.Value.G, colorItem2.Color.Value.B);
// Compare Hue
double hueColor1 = Math.Round((double)drawingColor1.GetHue(), 3);
double hueColor2 = Math.Round((double)drawingColor2.GetHue(), 3);
if (hueColor1 > hueColor2)
{
return(1);
}
else if (hueColor1 < hueColor2)
{
return(-1);
}
else
{
// Hue is equal, compare Saturation
double satColor1 = Math.Round((double)drawingColor1.GetSaturation(), 3);
double satColor2 = Math.Round((double)drawingColor2.GetSaturation(), 3);
if (satColor1 > satColor2)
{
return(1);
}
else if (satColor1 < satColor2)
{
return(-1);
}
else
{
// Saturation is equal, compare Brightness
double brightColor1 = Math.Round((double)drawingColor1.GetBrightness(), 3);
double brightColor2 = Math.Round((double)drawingColor2.GetBrightness(), 3);
if (brightColor1 > brightColor2)
{
return(1);
}
else if (brightColor1 < brightColor2)
{
return(-1);
}
}
}
return(0);
}
private static ObservableCollection<ColorItem> CreateAvailableColors()
{
ObservableCollection<ColorItem> _standardColors = new ObservableCollection<ColorItem>();
foreach (var item in ColorUtilities.KnownColors)
{
if (!String.Equals(item.Key, "Transparent"))
{
var colorItem = new ColorItem(item.Value, item.Key);
if (!_standardColors.Contains(colorItem))
_standardColors.Add(colorItem);
}
}
return _standardColors;
}
