Navigation¶

• Main Page
  

• Random Page
• Create a new Page
• All Pages
• Categories
• Navigation Paths
  
• File Management
  

• Create Account
  

Quick Search
»

PDFsharp Web Sample: Clock

<< Previous

^Up

Next >>

This sample shows how to create a PDF document on the fly in an ASP.NET application. For illustration the sample draws an analog clock that displays the current server time.

PDF Output File¶

See the PDF file created by this sample: output.pdf (24 kB)

Screen Shots¶

Here is a sample screen shot:

Live Test on the Web¶

Test the Clock sample: Run Clock on our web server

Source Code¶

Here is the framework for an .aspx page that returns a PDF file:

void Page_Load(object sender, EventArgs e)
{
  // Create new PDF document
  PdfDocument document = new PdfDocument();
  this.time = document.Info.CreationDate;
  document.Info.Title = "PDFsharp Clock Demo";
  document.Info.Author = "Stefan Lange";
  document.Info.Subject = "Server time: " +
    this.time.ToString("F", CultureInfo.InvariantCulture);
 
  // Create new page
  PdfPage page = document.AddPage();
  page.Width = XUnit.FromMillimeter(200);
  page.Height = XUnit.FromMillimeter(200);
 
  // Create graphics object and draw clock
  XGraphics gfx = XGraphics.FromPdfPage(page);
  RenderClock(gfx);
 
  // Send PDF to browser
  MemoryStream stream = new MemoryStream();
  document.Save(stream, false);
  Response.Clear();
  Response.ContentType = "application/pdf";
  Response.AddHeader("content-length", stream.Length.ToString());
  Response.BinaryWrite(stream.ToArray());
  Response.Flush();
  stream.Close();
  Response.End();
}

Here's the routine that draws a clock on a square page (Inspired by Charles Petzold's AnalogClock sample in 'Programming Microsoft Windows with C#'):

void RenderClock(XGraphics gfx)
{
  // Clocks should always look happy on hardcopies...
  //this.time = new DateTime(2005, 1, 1, 11, 6, 22, 500);
 
  XColor strokeColor = XColors.DarkBlue;
  XColor fillColor = XColors.DarkOrange;
 
  XPen pen = new XPen(strokeColor, 5);
  XBrush brush = new XSolidBrush(fillColor);
 
  strokeColor.A = 0.8;
  fillColor.A = 0.8;
  XPen handPen = new XPen(strokeColor, 5);
  XBrush handBrush = new XSolidBrush(fillColor);
 
  DrawText(gfx, pen, brush);
 
  double width = gfx.PageSize.Width;
  double height = gfx.PageSize.Height;
  gfx.TranslateTransform(width / 2, height / 2);
  double scale = Math.Min(width, height);
  gfx.ScaleTransform(scale / 2000);
 
  DrawFace(gfx, pen, brush);
  DrawHourHand(gfx, handPen, handBrush);
  DrawMinuteHand(gfx, handPen, handBrush);
  DrawSecondHand(gfx, new XPen(XColors.Red, 7));
}

The helper that draws the text:

static void DrawText(XGraphics gfx, XPen pen, XBrush brush)
{
  XSize size = gfx.PageSize;
  XGraphicsPath path = new XGraphicsPath();
  path.AddString("PDFsharp",
    new XFontFamily("Verdana"), XFontStyle.BoldItalic, 60,
    new XRect(0, size.Height / 3.5, size.Width, 0), XStringFormats.Center);
  gfx.DrawPath(new XPen(pen.Color, 3), brush, path);
}

The helper that draws the face:

static void DrawFace(XGraphics gfx, XPen pen, XBrush brush)
{
  for (int i = 0; i < 60; i++)
  {
    int size = i % 5 == 0 ? 100 : 30;
    gfx.DrawEllipse(pen, brush, 0 - size / 2, -900 - size / 2, size, size);
    gfx.RotateTransform(6);
  }
}

Three helpers draw the hands:

void DrawHourHand(XGraphics gfx, XPen pen, XBrush brush)
{
  XGraphicsState gs = gfx.Save();
  gfx.RotateTransform(360 * Time.Hour / 12 + 30 * Time.Minute / 60);
  gfx.DrawPolygon(pen, brush,
    new XPoint[]{new XPoint(0,  150), new XPoint(100, 0), 
                 new XPoint(0, -600), new XPoint(-100, 0)},
    XFillMode.Winding);
  gfx.Restore(gs);
}
 
void DrawMinuteHand(XGraphics gfx, XPen pen, XBrush brush)
{
  XGraphicsState gs = gfx.Save();
  gfx.RotateTransform(360 * Time.Minute / 60 + 6 * Time.Second / 60);
 
  gfx.DrawPolygon(pen, brush,
    new XPoint[]{new XPoint(0,  200), new XPoint(50, 0),
                 new XPoint(0, -800), new XPoint(-50, 0)},
    XFillMode.Winding);
  gfx.Restore(gs);
}
 
void DrawSecondHand(XGraphics gfx, XPen pen)
{
  XGraphicsState gs = gfx.Save();
 
  gfx.RotateTransform(360 * Time.Second / 60 + 6 * Time.Millisecond / 1000);
 
  gfx.DrawEllipse(new XSolidBrush(pen.Color), -15, -15, 30, 30);
  gfx.DrawLine(pen, 0, 40, 0, -800);
  gfx.Restore(gs);
}