//============================================================================
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//Gios Pdf.NET - A library for exporting Pdf Documents in C#
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//Copyright (C) 2005 Paolo Gios - www.paologios.com
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//
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//This library is free software; you can redistribute it and/or
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//modify it under the terms of the GNU Lesser General Public
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//License as published by the Free Software Foundation; either
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//version 2.1 of the License, or (at your option) any later version.
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//
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//This library is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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//Lesser General Public License for more details.
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//
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//You should have received a copy of the GNU Lesser General Public
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//License along with this library; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//=============================================================================
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using System;
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using System.Drawing;
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using System.Text;
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namespace HH.WMS.Utils.Gios.Pdf
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{
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/// <summary>
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/// a circle to put inside a PdfPage
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/// </summary>
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public class PdfCircle : PdfObject
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{
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private PdfArea axesArea;
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/// <summary>
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/// gets or sets the Area of defined by the horizontal and vertical axes
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/// </summary>
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public PdfArea AxesArea
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{
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get
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{
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return this.axesArea;
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}
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set
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{
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this.axesArea=value;
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}
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}
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internal double strokeWidth;
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/// <summary>
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/// gets or sets the stroke width (default value is 1)
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/// </summary>
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public double StrokeWidth
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{
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set
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{
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if (value<=0) throw new Exception("StrokeWidth must be grater than zero.");
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this.strokeWidth=value;
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}
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get
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{
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return this.strokeWidth;
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}
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}
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internal Color BorderColor;
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/// <summary>
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/// gets the center coordinates
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/// </summary>
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public System.Drawing.PointF Center
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{
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get
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{
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return new PointF((float)(this.axesArea.PosX+(this.axesArea.Width/2))
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,(float)(this.axesArea.PosY+(this.axesArea.Height/2)));
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}
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}
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internal PdfCircle()
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{
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this.strokeWidth=1;
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}
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/// <summary>
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/// creates a new circle
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/// </summary>
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/// <param name="posx">center's x coordinate</param>
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/// <param name="posy">center's y coordinate</param>
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/// <param name="ray">ray measure</param>
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/// <param name="Color">circumference color</param>
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public PdfCircle(double posx,double posy,double ray,Color Color)
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{
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if (ray<=0) throw new Exception("Ray must be grater than zero.");
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this.axesArea=new PdfArea(this.PdfDocument,posx-ray,posy-ray,ray*2,ray*2);
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this.BorderColor=Color;
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this.strokeWidth=1;
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}
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/// <summary>
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/// creates a circle with different x and y diamaters (ellipse)
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/// </summary>
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/// <param name="posx">center's x coordinate</param>
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/// <param name="posy">center's y coordinate</param>
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/// <param name="XDiameter">x diameter measure</param>
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/// <param name="YDiameter">y diameter measure</param>
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/// <param name="Color">circumference color</param>
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public PdfCircle(double posx,double posy,double XDiameter,double YDiameter,Color Color)
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{
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if (XDiameter<=0) throw new Exception("XDiameter must be grater than zero.");
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if (YDiameter<=0) throw new Exception("YDiameter must be grater than zero.");
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this.axesArea=new PdfArea(this.PdfDocument,posx-XDiameter/2,posy-YDiameter/2,XDiameter,YDiameter);
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this.BorderColor=Color;
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this.strokeWidth=1;
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}
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/// <summary>
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/// sets the diameters lenght of the circle.
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/// </summary>
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/// <param name="XDiameter"></param>
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/// <param name="YDiameter"></param>
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public void SetDiameters(double XDiameter,double YDiameter)
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{
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if (XDiameter<=0) throw new Exception("XDiameter must be grater than zero.");
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if (YDiameter<=0) throw new Exception("YDiameter must be grater than zero.");
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this.axesArea=new PdfArea(this.PdfDocument,this.axesArea.CenterX-XDiameter/2,this.axesArea.CenterY-YDiameter/2,XDiameter,YDiameter);
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}
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/// <summary>
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/// sets the ray lenght of the circle.
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/// </summary>
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/// <param name="Ray"></param>
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public void SetRay(double Ray)
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{
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if (Ray<=0) throw new Exception("Ray must be grater than zero.");
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this.SetDiameters(Ray*2,Ray*2);
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}
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internal string ToLineStream()
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{
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string text="";
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text+=Utility.ColorRGLine(this.BorderColor);
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text+=this.strokeWidth.ToString("0.##")+" ";
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text+="w\n";
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text+=this.Center.X.ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.PosY).ToString("0.##")+" m\n";
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text+=(this.axesArea.BottomRightCornerX+this.axesArea.Width/6).ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.PosY).ToString("0.##")+" ";
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text+=(this.axesArea.BottomRightCornerX+this.axesArea.Width/6).ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.BottomRightCornerY).ToString("0.##")+" ";
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text+=this.Center.X.ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.BottomRightCornerY).ToString("0.##")+" c \n";
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text+=(this.axesArea.PosX-this.axesArea.Width/6).ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.BottomRightCornerY).ToString("0.##")+" ";
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text+=(this.axesArea.PosX-this.axesArea.Width/6).ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.PosY).ToString("0.##")+" ";
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text+=this.Center.X.ToString("0.##")+" ";
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text+=(this.PdfDocument.PH-this.axesArea.PosY).ToString("0.##")+" c\n";
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text+="s\n";
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text=text.Replace(",",".");
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return text;
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}
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internal override int StreamWrite(System.IO.Stream stream)
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{
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int num=this.id;
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string text=this.ToLineStream();
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Byte[] part2;
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if (PdfDocument.FlateCompression) part2=Utility.Deflate(text); else
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part2=System.Text.ASCIIEncoding.ASCII.GetBytes(text);
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string s1="";
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s1+=num.ToString()+" 0 obj\n";
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s1+="<< /Lenght "+part2.Length;
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if (PdfDocument.FlateCompression) s1+=" /Filter /FlateDecode";
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s1+=">>\n";
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s1+="stream\n";
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string s3="";
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s3+="\nendstream\n";
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s3+="endobj\n";
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Byte[] part1=System.Text.ASCIIEncoding.ASCII.GetBytes(s1);
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Byte[] part3=System.Text.ASCIIEncoding.ASCII.GetBytes(s3);
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stream.Write(part1,0,part1.Length);
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stream.Write(part2,0,part2.Length);
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stream.Write(part3,0,part3.Length);
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return part1.Length+part2.Length+part3.Length;
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}
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}
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}
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