protected virtual PDFObjectRef RenderShadingDictionary(PDFContextBase context, PDFWriter writer)
{
PDFPoint offset = new PDFPoint(this.Start.X, this.Start.Y);// this.Start;
PDFSize size = this.Size;
PDFSize graphicsSize = new PDFSize(size.Width + offset.X, size.Height + offset.Y);
var func = this._descriptor.GetGradientFunction(offset, size);
var coords = GetCoords(offset, size, _descriptor.Size, _descriptor.XCentre, _descriptor.YCentre);
writer.BeginDictionaryEntry("Shading");
writer.BeginDictionary();
writer.WriteDictionaryNumberEntry("ShadingType", (int)ShadingType.Radial);
writer.WriteDictionaryNameEntry("ColorSpace", "DeviceRGB");
writer.WriteDictionaryBooleanEntry("AntiAlias", true);
writer.BeginDictionaryEntry("BBox");
writer.WriteArrayRealEntries(true, offset.X.PointsValue,
offset.Y.PointsValue,
offset.X.PointsValue + size.Width.PointsValue,
offset.Y.PointsValue + size.Height.PointsValue);
writer.EndDictionaryEntry();
writer.BeginDictionaryEntry("Coords");
writer.WriteArrayRealEntries(true, coords);
writer.EndDictionaryEntry();
writer.BeginDictionaryEntry("Extend");
writer.BeginArray();
writer.BeginArrayEntry();
writer.WriteBooleanS(true);
writer.EndArrayEntry();
writer.BeginArrayEntry();
writer.WriteBooleanS(true);
writer.EndArrayEntry();
writer.EndArray();
writer.EndDictionaryEntry();
if (null != func)
{
writer.BeginDictionaryEntry("Function");
func.WriteFunctionDictionary(context, writer);
writer.EndDictionaryEntry();
}
writer.EndDictionary();//shading
return(null);
}
/// <summary>
/// Writes the underlying data of the file object to the passed text writer
/// </summary>
/// <param name="tw">The text writer object to write data to</param>
public void WriteData(PDFWriter writer)
{
writer.WriteBooleanS(this.Value);
}
