How to Draw a Chart with FixedContentEditor in PdfProcessing
Environment
| Version | Product | Author |
|---|---|---|
| 2024.1.124 | RadPdfProcessing | Desislava Yordanova |
Description
This article demonstrates a sample solution how to draw a chart in PdfProcessing.
Solution
The powerful FixedContentEditor allows you draw a simulation of a chart element at the desired Position:
public static System.Windows.Size pageSize = new System.Windows.Size(Unit.MmToDip(210), Telerik.Windows.Documents.Media.Unit.MmToDip(297));
public static Padding pageMarginsValue = new Telerik.Windows.Documents.Primitives.Padding(
Unit.MmToDip(20),//left
Unit.MmToDip(0),//top
Unit.MmToDip(0),//right
Unit.MmToDip(0));//bottom
public static double currentYposition = pageMarginsValue.Top;
public static double currentXposition = pageMarginsValue.Left;
public static double pageYLimit = pageSize.Height - pageMarginsValue.Bottom;
public static double pageXLimit = pageSize.Width - pageMarginsValue.Right;
private static Random random = new Random();
private static Dictionary<string, int> availableLibraries = new Dictionary<string, int>();
private static RadFixedDocument fixedDocument = new RadFixedDocument();
static void Main(string[] args)
{
availableLibraries.Add("RadPdfProcessing", random.Next(20, 500));
availableLibraries.Add("RadSpreadProcessing", random.Next(20, 500));
availableLibraries.Add("RadWordsProcessing", random.Next(20, 500));
availableLibraries.Add("RadSpreadStreamProcessing", random.Next(20, 500));
availableLibraries.Add("RadZipLibrary", random.Next(20, 500));
DrawChart();
PdfFormatProvider provider = new PdfFormatProvider();
string outputFilePath = @"..\..\sample.pdf";
File.Delete(outputFilePath);
using (Stream output = File.OpenWrite(outputFilePath))
{
provider.Export(fixedDocument, output);
}
Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });
}
private static void DrawChart()
{
RadFixedPage fixedPage = fixedDocument.Pages.LastOrDefault();
if (fixedPage == null) { fixedPage = fixedDocument.Pages.AddPage(); }
FixedContentEditor fixedContentEditor = new FixedContentEditor(fixedPage);
fixedContentEditor.Position.Translate(currentXposition, currentYposition);
fixedContentEditor.TextProperties.Font = FontsRepository.Courier;
double maxWidth = availableLibraries.Max(x =>
{
Block block = new Block();
block.InsertText(x.Key +" - "+ x.Value );
return block.Measure().Height;
});
Point chartStartPoint = new Point(maxWidth, 250);
Rect chartDimensions = GetChartDimensions(chartStartPoint);
fixedContentEditor.Position.Translate(pageMarginsValue.Left, currentYposition);
int maxValue = availableLibraries.Max(x => x.Value);
Block textBlock = new Block();
textBlock.InsertText(availableLibraries.First().Key);
double textHeight = textBlock.Measure().Height;
double startX = 0;
foreach (KeyValuePair<string, int> library in availableLibraries)
{
Block measureBlock = new Block();
measureBlock.InsertText(string.Format("{0} - {1}", library.Key, library.Value));
Size measuredSize = measureBlock.Measure();
startX = Math.Max(startX, measuredSize.Width)+10;
}
foreach (KeyValuePair<string, int> library in availableLibraries)
{
DrawBarAndText(maxValue, textHeight, startX, library);
}
}
private static Rect GetChartDimensions(Point start)
{
Block textBlock = new Block();
textBlock.InsertText(availableLibraries.First().Key);
double textHeight = textBlock.Measure().Height;
double chartHeight = textHeight * availableLibraries.Count;
double pageWidth = fixedDocument.Pages.Last().Size.Width;
double chartWidth = pageWidth * 0.55;
Point leftBottomPoint = new Point(start.X, start.Y + chartHeight);
Point rightTopPoint = new Point(chartWidth + start.X, start.Y);
Point rightBottomPoint = new Point(chartWidth + start.X, chartHeight + start.Y);
Rect chartRect = new Rect(start, new Size(rightTopPoint.X - start.X, chartHeight));
return chartRect;
}
private static byte RandomRgbValue()
{
return (byte)random.Next(0, 201);
}
private static void DrawBarAndText(int maxValue, double textHeight, double startX, KeyValuePair<string, int> library)
{
string name = library.Key;
RadFixedPage fixedPage = fixedDocument.Pages.LastOrDefault();
if (fixedPage == null) { fixedPage = fixedDocument.Pages.AddPage(); }
FixedContentEditor fixedContentEditor = new FixedContentEditor(fixedPage);
RgbColor fillColor = new RgbColor(RandomRgbValue(), RandomRgbValue(), RandomRgbValue());
Block textBlock = new Block();
fixedContentEditor.GraphicProperties.FillColor = fillColor;
fixedContentEditor.GraphicProperties.StrokeColor = new RgbColor(fillColor.B, fillColor.G, fillColor.R);
textBlock.GraphicProperties.CopyFrom(fixedContentEditor.GraphicProperties);
textBlock.InsertText(string.Format("{0} - {1}", name, library.Value));
Size measuredText = textBlock.Measure();
currentYposition += measuredText.Height;
fixedContentEditor.Position.Translate(pageMarginsValue.Left, currentYposition);
fixedContentEditor.DrawBlock(textBlock);
int width = library.Value - (maxValue % library.Value);
fixedContentEditor.Position.Translate(fixedContentEditor.Position.Matrix.OffsetX + startX, currentYposition);
LinearGradient linearGradient = new Telerik.Windows.Documents.Fixed.Model.ColorSpaces.LinearGradient(new Point(0, 0), new Point(30, 30));
RgbColor startColor= new RgbColor(RandomRgbValue(), RandomRgbValue(), RandomRgbValue());
RgbColor stopColor = new RgbColor(RandomRgbValue(), RandomRgbValue(), RandomRgbValue());
linearGradient.GradientStops.Add(new GradientStop(startColor, 0));
linearGradient.GradientStops.Add(new GradientStop(stopColor, 1));
fixedContentEditor.GraphicProperties.FillColor = linearGradient;
IPosition savedPosition = fixedContentEditor.Position.Clone();
fixedContentEditor.Position.Translate(0, currentYposition);
fixedContentEditor.DrawRectangle(new Rect(startX + pageMarginsValue.Left, textHeight / 2, width, 10));
fixedContentEditor.Position = savedPosition;
fixedContentEditor.Position.Translate(fixedContentEditor.Position.Matrix.OffsetX - startX, currentYposition + measuredText.Height);
}
The achieved result is illustrated below:
