/// <summary>
/// Renders the bar/column item.
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="clippingRect">
/// The clipping rectangle.
/// </param>
/// <param name="topValue">
/// The end value of the bar.
/// </param>
/// <param name="categoryValue">
/// The category value.
/// </param>
/// <param name="actualBarWidth">
/// The actual width of the bar.
/// </param>
/// <param name="item">
/// The item.
/// </param>
/// <param name="rect">
/// The rectangle of the bar.
/// </param>
protected virtual void RenderItem(
IRenderContext rc,
OxyRect clippingRect,
double topValue,
double categoryValue,
double actualBarWidth,
BarItemBase item,
OxyRect rect)
{
// Get the color of the item
var actualFillColor = item.Color;
if (actualFillColor == null)
{
actualFillColor = this.ActualFillColor;
if (item.Value < 0 && this.NegativeFillColor != null)
{
actualFillColor = this.NegativeFillColor;
}
}
rc.DrawClippedRectangleAsPolygon(
rect, clippingRect, this.GetSelectableFillColor(actualFillColor), this.StrokeColor, this.StrokeThickness);
}
/// <summary>
/// Renders the bar/column item.
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="clippingRect">
/// The clipping rectangle.
/// </param>
/// <param name="topValue">
/// The end value of the bar.
/// </param>
/// <param name="categoryValue">
/// The category value.
/// </param>
/// <param name="actualBarWidth">
/// The actual width of the bar.
/// </param>
/// <param name="item">
/// The item.
/// </param>
/// <param name="rect">
/// The rectangle of the bar.
/// </param>
protected virtual void RenderItem(
IRenderContext rc,
OxyRect clippingRect,
double topValue,
double categoryValue,
double actualBarWidth,
BarItemBase item,
OxyRect rect)
{
// Get the color of the item
var actualFillColor = item.Color;
if (actualFillColor == null)
{
actualFillColor = this.ActualFillColor;
if (item.Value < 0 && this.NegativeFillColor != null)
{
actualFillColor = this.NegativeFillColor;
}
}
rc.DrawClippedRectangleAsPolygon(
rect, clippingRect, this.GetSelectableFillColor(actualFillColor), this.StrokeColor, this.StrokeThickness);
}
/// <summary>
/// Renders the bar/column item.
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="clippingRect">
/// The clipping rectangle.
/// </param>
/// <param name="topValue">
/// The end value of the bar.
/// </param>
/// <param name="categoryValue">
/// The category value.
/// </param>
/// <param name="actualBarWidth">
/// The actual width of the bar.
/// </param>
/// <param name="item">
/// The item.
/// </param>
/// <param name="rect">
/// The rectangle of the bar.
/// </param>
protected override void RenderItem(
IRenderContext rc,
OxyRect clippingRect,
double topValue,
double categoryValue,
double actualBarWidth,
BarItemBase item,
OxyRect rect)
{
base.RenderItem(rc, clippingRect, topValue, categoryValue, actualBarWidth, item, rect);
var errorItem = item as ErrorColumnItem;
if (errorItem == null)
{
return;
}
// Render the error
var lowerValue = topValue - errorItem.Error;
var upperValue = topValue + errorItem.Error;
var left = 0.5 - this.ErrorWidth / 2;
var right = 0.5 + this.ErrorWidth / 2;
var leftValue = categoryValue + (left * actualBarWidth);
var middleValue = categoryValue + (0.5 * actualBarWidth);
var rightValue = categoryValue + (right * actualBarWidth);
var lowerErrorPoint = this.Transform(middleValue, lowerValue);
var upperErrorPoint = this.Transform(middleValue, upperValue);
rc.DrawClippedLine(
new List <ScreenPoint> {
lowerErrorPoint, upperErrorPoint
},
clippingRect,
0,
this.StrokeColor,
this.ErrorStrokeThickness,
LineStyle.Solid,
OxyPenLineJoin.Miter,
true);
if (this.ErrorWidth > 0)
{
var lowerLeftErrorPoint = this.Transform(leftValue, lowerValue);
var lowerRightErrorPoint = this.Transform(rightValue, lowerValue);
rc.DrawClippedLine(
new List <ScreenPoint> {
lowerLeftErrorPoint, lowerRightErrorPoint
},
clippingRect,
0,
this.StrokeColor,
this.ErrorStrokeThickness,
LineStyle.Solid,
OxyPenLineJoin.Miter,
true);
var upperLeftErrorPoint = this.Transform(leftValue, upperValue);
var upperRightErrorPoint = this.Transform(rightValue, upperValue);
rc.DrawClippedLine(
new List <ScreenPoint> {
upperLeftErrorPoint, upperRightErrorPoint
},
clippingRect,
0,
this.StrokeColor,
this.ErrorStrokeThickness,
LineStyle.Solid,
OxyPenLineJoin.Miter,
true);
}
}