/// <summary>
/// Main method for running the sample.
/// </summary>
public static SampleOutputInfo[] Run()
{
// Create the pdf document
PDFFixedDocument document = new PDFFixedDocument();
// Create a new page in the document
PDFPage page = document.Pages.Add();
PDFPen blackPen = new PDFPen(PDFRgbColor.Black, 1);
PDFPen redPen = new PDFPen(PDFRgbColor.Red, 4);
PDFPen greenPen = new PDFPen(PDFRgbColor.Green, 2);
PDFBrush blackBrush = new PDFBrush(PDFRgbColor.Black);
PDFStandardFont helvetica = new PDFStandardFont(PDFStandardFontFace.Helvetica, 16);
// Draw viewport border.
page.Canvas.DrawRectangle(blackPen, 50, 50, 500, 500);
// Draw the line to be measured.
page.Canvas.DrawLine(greenPen, 70, 70, 530, 530);
// Draw point A (line start) in the viewport.
page.Canvas.DrawLine(redPen, 60, 70, 80, 70);
page.Canvas.DrawLine(redPen, 70, 60, 70, 80);
// Draw point B (line end) in the viewport.
page.Canvas.DrawLine(redPen, 520, 530, 540, 530);
page.Canvas.DrawLine(redPen, 530, 520, 530, 540);
page.Canvas.DrawString("A", helvetica, blackBrush, 85, 65);
page.Canvas.DrawString("B", helvetica, blackBrush, 505, 525);
page.Canvas.DrawString("Viewport", helvetica, blackBrush, 50, 560);
helvetica.Size = 10;
page.Canvas.DrawString(
"Open the file with Adobe Acrobat and measure the distance from A to B using the Distance tool.",
helvetica, blackBrush, 50, 580);
page.Canvas.DrawString("The measured distance should be 9 mi 186 ft 1 1/4 in.",
helvetica, blackBrush, 50, 590);
// Create a viewport that matches the rectangle above.
PDFViewport vp = new PDFViewport();
vp.Name = "Sample viewport";
PDFPoint ll = page.ConvertVisualPointToStandardPoint(new PDFPoint(50, 50));
PDFPoint ur = page.ConvertVisualPointToStandardPoint(new PDFPoint(550, 550));
vp.Bounds = new PDFStandardRectangle(ll, ur);
// Add the viewport to the page
page.Viewports = new PDFViewportCollection();
page.Viewports.Add(vp);
// Create a rectilinear measure for the viewport (CAD drawing for example).
PDFRectilinearMeasure rlm = new PDFRectilinearMeasure();
// Attach the measure to the viewport.
vp.Measure = rlm;
// Set the measure scale: 1 inch (72 points) in PDF corresponds to 1 mile
rlm.ScaleRatio = "1 in = 1 mi";
// Create a number format that controls the display of units for X axis.
PDFNumberFormat xNumberFormat = new PDFNumberFormat();
xNumberFormat.MeasureUnit = "mi";
xNumberFormat.ConversionFactor = 1 / 72.0; // Conversion from user space units to miles
xNumberFormat.FractionDisplay = PDFFractionDisplay.Decimal;
xNumberFormat.Precision = 100000;
rlm.X = new PDFNumberFormatCollection();
rlm.X.Add(xNumberFormat);
// Create a chain of number formats that control the display of units for distance.
rlm.Distance = new PDFNumberFormatCollection();
PDFNumberFormat miNumberFormat = new PDFNumberFormat();
miNumberFormat.MeasureUnit = "mi";
miNumberFormat.ConversionFactor = 1; // Initial unit is miles; no conversion needed
rlm.Distance.Add(miNumberFormat);
PDFNumberFormat ftNumberFormat = new PDFNumberFormat();
ftNumberFormat.MeasureUnit = "ft";
ftNumberFormat.ConversionFactor = 5280; // Conversion from miles to feet
rlm.Distance.Add(ftNumberFormat);
PDFNumberFormat inNumberFormat = new PDFNumberFormat();
inNumberFormat.MeasureUnit = "in";
inNumberFormat.ConversionFactor = 12; // Conversion from feet to inches
inNumberFormat.FractionDisplay = PDFFractionDisplay.Fraction;
inNumberFormat.Denominator = 8; // Fractions of inches rounded to nearest 1/8
rlm.Distance.Add(inNumberFormat);
// Create a number format that controls the display of units area.
PDFNumberFormat areaNumberFormat = new PDFNumberFormat();
areaNumberFormat.MeasureUnit = "acres";
areaNumberFormat.ConversionFactor = 640; // Conversion from square miles to acres
rlm.Area = new PDFNumberFormatCollection();
rlm.Area.Add(xNumberFormat);
SampleOutputInfo[] output = new SampleOutputInfo[] { new SampleOutputInfo(document, "measurements.pdf") };
return(output);
}
protected override PDFObjectRef DoOutputToPDF(PDFRenderContext context, PDFWriter writer)
{
PDFSize prevSize = context.Space;
PDFPoint prevLoc = context.Offset;
Style laststyle = context.FullStyle;
PDFObjectRef oref;
if (this.Owner is IPDFRenderComponent)
{
PDFPoint loc = context.Offset;
loc = loc.Offset(this.TotalBounds.Location);
PDFSize size = this.TotalBounds.Size;
PDFPositionOptions opts = this.PositionOptions;
context.Offset = loc;
context.Space = size;
if (opts.Margins.IsEmpty == false)
{
loc = loc.Offset(opts.Margins.Left, opts.Margins.Top);
size = size.Subtract(opts.Margins);
}
PDFPenBorders border = this.FullStyle.CreateBorderPen();
PDFBrush background = this.FullStyle.CreateBackgroundBrush();
PDFRect borderRect = new PDFRect(loc, size);
if (null != background)
{
this.OutputBackground(background, border.HasBorders? border.CornerRadius : null, context, borderRect);
}
if (opts.Padding.IsEmpty == false)
{
loc = loc.Offset(opts.Padding.Left, opts.Padding.Top);
size = size.Subtract(opts.Padding);
}
//Set the offset, size and full style on the context
context.Offset = loc;
context.Space = size;
context.FullStyle = this.FullStyle;
if (context.ShouldLogDebug)
{
context.TraceLog.Begin(TraceLevel.Verbose, "Layout Item", "Beginning the rendering the referenced component " + this.Owner + " with context offset of " + context.Offset + " and space " + context.Space);
}
else if (context.ShouldLogVerbose)
{
context.TraceLog.Add(TraceLevel.Verbose, "Layout Item", "Rendering the referenced component " + this.Owner + " with context offset of " + context.Offset + " and space " + context.Space);
}
//Then make the component render itself
oref = (this.Owner as IPDFRenderComponent).OutputToPDF(context, writer);
Component owner = this.Owner as Component;
if (null != owner)
{
owner.SetArrangement(context, context.FullStyle, borderRect);
}
//finally if we have a border then write this
if (null != border)
{
this.OutputBorder(background, border, context, borderRect);
}
if (context.ShouldLogDebug)
{
context.TraceLog.End(TraceLevel.Verbose, "Layout Item", "Completed the rendering the referenced component " + this.Owner + " and arrangement set to border rect " + borderRect);
}
}
else
{
oref = base.DoOutputToPDF(context, writer);
}
context.Space = prevSize;
context.Offset = prevLoc;
context.FullStyle = laststyle;
return(oref);
}