/// <summary>
/// Paints the annotation object on the specified graphics.
/// </summary>
/// <param name="graphics">
/// A <see cref="ChartGraphics"/>
/// </param>
/// <param name="chart">
/// Reference to the <see cref="Chart"/> control that owns the annotation.
/// </param>
override internal void Paint(Chart chart, ChartGraphics graphics)
{
// Get annotation position in relative coordinates
PointF firstPoint = PointF.Empty;
PointF anchorPoint = PointF.Empty;
SizeF size = SizeF.Empty;
GetRelativePosition(out firstPoint, out size, out anchorPoint);
PointF secondPoint = new PointF(firstPoint.X + size.Width, firstPoint.Y + size.Height);
// Create selection rectangle
RectangleF selectionRect = new RectangleF(firstPoint, new SizeF(secondPoint.X - firstPoint.X, secondPoint.Y - firstPoint.Y));
// Get text position
RectangleF rectanglePosition = new RectangleF(selectionRect.Location, selectionRect.Size);
if (rectanglePosition.Width < 0)
{
rectanglePosition.X = rectanglePosition.Right;
rectanglePosition.Width = -rectanglePosition.Width;
}
if (rectanglePosition.Height < 0)
{
rectanglePosition.Y = rectanglePosition.Bottom;
rectanglePosition.Height = -rectanglePosition.Height;
}
// Check if position is valid
if (float.IsNaN(rectanglePosition.X) ||
float.IsNaN(rectanglePosition.Y) ||
float.IsNaN(rectanglePosition.Right) ||
float.IsNaN(rectanglePosition.Bottom))
{
return;
}
if (this.Common.ProcessModePaint)
{
// Do not draw border if size is less that 10 pixels
RectangleF absRectanglePosition = graphics.GetAbsoluteRectangle(rectanglePosition);
if (absRectanglePosition.Width > 30f &&
absRectanglePosition.Height > 30f)
{
// Draw rectangle
graphics.Draw3DBorderRel(
_borderSkin,
rectanglePosition,
this.BackColor,
this.BackHatchStyle,
String.Empty,
ChartImageWrapMode.Scaled,
Color.Empty,
ChartImageAlignmentStyle.Center,
this.BackGradientStyle,
this.BackSecondaryColor,
this.LineColor,
this.LineWidth,
this.LineDashStyle);
}
}
// Call base class to paint text, selection handles and process hot regions
base.Paint(chart, graphics);
}