/// <summary>
/// Converts values to <see cref="SolidColorBrush"/>.
/// </summary>
/// <param name="value">Value to convert. It can be one of the following types:
/// <see cref="SolidColorBrush"/>, <see cref="Color"/>,
/// <see cref="string"/> defining system name or hexadecimal representation (#AARRGGBB) of color
/// or any numeric. If the value is of numeric type then <see cref="Palette"/> is used for convertion.</param>
/// <param name="targetType"></param>
/// <param name="parameter">The instance of <see cref="DataSeries"/> representing colors.</param>
/// <param name="culture"></param>
/// <returns><see cref="SolidColorBrush"/> from specified value.</returns>
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
try
{
DataSeries data = parameter as DataSeries;
if (value is double)
{
if (palette.IsNormalized)
{
palette = new Palette(false, new Range(data.MinValue, data.MaxValue), palette);
}
return(new SolidColorBrush(Palette.GetColor((double)value)));
}
else
{
SolidColorBrush solidColorBrush = value as SolidColorBrush;
if (solidColorBrush != null)
{
return(solidColorBrush);
}
else if (value is Color)
{
return(new SolidColorBrush((Color)value));
}
else
{
string str = value as string;
if (str != null)
{
Color color = new Color();
if (Char.IsLetter(str[0]))
{
bool isNamed = false;
Type colors = typeof(Colors);
foreach (var property in colors.GetProperties())
{
if (property.Name == str)
{
color = (Color)property.GetValue(null, null);
isNamed = true;
}
}
if (!isNamed)
{
throw new ArgumentException("Wrong name of color");
}
}
else if (str[0] == '#')
{
if (str.Length == 7)
{
color.A = 255;
color.R = System.Convert.ToByte(str.Substring(1, 2), 16);
color.G = System.Convert.ToByte(str.Substring(3, 2), 16);
color.B = System.Convert.ToByte(str.Substring(5, 2), 16);
}
else if (str.Length == 9)
{
color.A = System.Convert.ToByte(str.Substring(1, 2), 16);
color.R = System.Convert.ToByte(str.Substring(3, 2), 16);
color.G = System.Convert.ToByte(str.Substring(5, 2), 16);
color.B = System.Convert.ToByte(str.Substring(7, 2), 16);
}
else
{
throw new ArgumentException("Wrong name of color");
}
}
else
{
throw new ArgumentException("Wrong name of color");
}
return(new SolidColorBrush(color));
}
else
{
double d = System.Convert.ToDouble(value, CultureInfo.InvariantCulture);
if (palette.IsNormalized)
{
if (data.MinValue == data.MaxValue)
{
return(new SolidColorBrush(new Palette(false,
new Range(data.MinValue - 0.5, data.MaxValue + 0.5), palette).GetColor(d)));
}
else
{
return(new SolidColorBrush(new Palette(false,
new Range(data.MinValue, data.MaxValue), palette).GetColor(d)));
}
}
return(new SolidColorBrush(palette.GetColor(d)));
}
}
}
}
catch (Exception exc)
{
Debug.WriteLine("Cannot convert value: " + exc.Message);
return(new SolidColorBrush(Colors.Black));
}
}
private void UpdateBitmap()
{
if (PaletteOrientation == Orientation.Horizontal && (Width == 0 || Double.IsNaN(Width)))
{
image.Source = null;
return;
}
if (PaletteOrientation == Orientation.Vertical && (Height == 0 || Double.IsNaN(Height)))
{
image.Source = null;
return;
}
if (Palette == null)
{
image.Source = null;
return;
}
int width = 0;
int height = 0;
if (PaletteOrientation == Orientation.Horizontal)
{
width = (int)Width;
height = (int)PaletteHeight;
}
else
{
width = (int)Height;
height = (int)PaletteHeight;
}
WriteableBitmap bmp2 = new WriteableBitmap(width, height, 96, 96, PixelFormats.Bgra32, null);
WriteableBitmap bmp = bmp2.Clone();
bmp.Lock();
unsafe
{
byte * pixels = (byte *)bmp.BackBuffer;
int stride = bmp.BackBufferStride;
int pixelWidth = bmp.PixelWidth;
double min = Palette.Range.Min;
double coeff = (Palette.Range.Max - min) / bmp.PixelWidth;
for (int i = 0; i < pixelWidth; i++)
{
double ratio = i * coeff + min;
Color color = Palette.GetColor(i * coeff + min);
for (int j = 0; j < height; j++)
{
pixels[(i << 2) + 3 + j * stride] = color.A;
pixels[(i << 2) + 2 + j * stride] = color.R;
pixels[(i << 2) + 1 + j * stride] = color.G;
pixels[(i << 2) + j * stride] = color.B;
}
}
}
bmp.Unlock();
if (PaletteOrientation == Orientation.Vertical)
{
//SaveBMP("paleteControl_0.bmp", bmp);
image.Source = WriteableBitmapreomBitmap(rotateImage90(BitmapFromWriteableBitmap(bmp)));
}
else
{
image.Source = bmp;
}
image.Width = image.Source.Width;
image.Height = image.Source.Height;
//Thickness marginThickness = this.Margin;
//Width = (axis.ActualWidth + image.Width + 10) - marginThickness.Left - marginThickness.Left;
//Height = Math.Max(image.Height , axis.Height) - marginThickness.Top - marginThickness.Bottom;
}
