private void CreateThemeItems(IStyle minStyle, IStyle maxStyle, int numberOfThemeItems)
{
minItem = new GradientThemeItem(minStyle, string.Format("{0:g4}", minValue), string.Format("{0:g4}", minValue));
themeItems.Add(minItem);
maxItem = new GradientThemeItem(maxStyle, string.Format("{0:g4}", maxValue),
string.Format("{0:g4}", maxValue));
if (maxValue != minValue) //don't generate in between items if min == max
{
double step = (maxValue - minValue) / (numberOfThemeItems - 1); //for 3 themeItems step should be halfway the data
for (int i = 1; i <= numberOfThemeItems - 2; i++)
{
double value = minValue + i * step;
IStyle style = GetStyle(value);
var gradientThemeItem = new GradientThemeItem(style, string.Format("{0:g4}", value), string.Format("{0:g4}", value));
themeItems.Add(gradientThemeItem);
}
}
themeItems.Add(maxItem);
}
public GradientTheme(string columnName, double minValue, double maxValue, IStyle minStyle, IStyle maxStyle,
ColorBlend fillColorBlend, ColorBlend lineColorBlend, ColorBlend textColorBlend, int numberOfClasses)
{
this.minValue = minValue;
this.maxValue = maxValue;
this.fillColorBlend = fillColorBlend;
this.lineColorBlend = lineColorBlend;
this.textColorBlend = textColorBlend;
attributeName = columnName;
//create themeitems only for the extremes. Other values are interpolated.
minItem = new GradientThemeItem(minStyle, string.Format("{0:g4}", minValue), string.Format("{0:g4}", minValue));
themeItems.Add(minItem);
maxItem = new GradientThemeItem(maxStyle, string.Format("{0:g4}", maxValue),
string.Format("{0:g4}", maxValue));
double step = (maxValue - minValue) / numberOfClasses;
for (int i = 1; i <= numberOfClasses - 2; i++)
{
double value = minValue + i * step;
IStyle style = GetStyle(value);
var gradientThemeItem = new GradientThemeItem(style, string.Format("{0:g4}", value), string.Format("{0:g4}", value));
themeItems.Add(gradientThemeItem);
}
themeItems.Add(maxItem);
minColor = ThemeHelper.ExtractFillColorFromThemeItem(minItem);
minItem.Symbol = ((VectorStyle)minStyle).LegendSymbol;
maxColor = ThemeHelper.ExtractFillColorFromThemeItem(maxItem);
maxItem.Symbol = ((VectorStyle)maxStyle).LegendSymbol;
}
public GradientThemeItem(GradientThemeItem another)
{
label = another.Label;
style = (IStyle) another.Style.Clone();
range = another.Range.Clone() as string;
}
public GradientThemeItem(GradientThemeItem another)
{
label = another.Label;
style = (IStyle)another.Style.Clone();
range = another.Range.Clone() as string;
}
private static GradientTheme GetGradientTheme(theme theme)
{
var themeGradient = (themeGradient)theme.Item;
var minStyle = (IStyle)GetStyleConverter().ConvertFrom(themeGradient.minStyle);
var maxStyle = (IStyle)GetStyleConverter().ConvertFrom(themeGradient.maxStyle);
var gradTheme = new GradientTheme(themeGradient.columnName,
themeGradient.minValue,
themeGradient.maxValue,
minStyle,
maxStyle,
// Color blend properties
(themeGradient.fillColorBlends != null)
? createColorBlendForTheme(themeGradient.fillColorBlends)
: null,
(themeGradient.lineColorBlends != null)
? createColorBlendForTheme(themeGradient.lineColorBlends)
: null,
(themeGradient.textColorBlends != null)
? createColorBlendForTheme(themeGradient.textColorBlends)
: null)
{
NoDataValues = ConvertNoDataValues(themeGradient.noDataValues, themeGradient.noDataValueType)
};
gradTheme.ThemeItems.Clear();
foreach (themeItem gradThemeItem in themeGradient.gradientThemeItems)
{
var themeStyle = GetStyle(gradThemeItem);
var gradientThemeItem = new GradientThemeItem(themeStyle, gradThemeItem.label, gradThemeItem.intervalMaxValue.ToString());
gradTheme.ThemeItems.Add(gradientThemeItem);
}
return gradTheme;
}