){kind=link}
public virtual void PathNodeRendererMoveToTest1()
{
String filename = "pathNodeRendererMoveToTest1.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
IDictionary <String, String> pathShapes = new Dictionary <String, String>();
pathShapes.Put("d", "M 100 100 l300 100 L200 300 z");
ISvgNodeRenderer pathRenderer = new PathSvgNodeRenderer();
pathRenderer.SetAttributesAndStyles(pathShapes);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
pathRenderer.Draw(context);
doc.Close();
String result = new CompareTool().CompareByContent(destinationFolder + filename, sourceFolder + "cmp_" + filename
, destinationFolder, "diff_");
if (result != null && !result.Contains("No visual differences"))
{
NUnit.Framework.Assert.Fail(result);
}
}
/// <summary>
/// Create an
/// <see cref="iText.Kernel.Pdf.Xobject.PdfFormXObject"/>
/// tied to the passed
/// <c>PdfDocument</c>
/// using the SVG processing result.
/// </summary>
/// <param name="result">Processing result containing the SVG information</param>
/// <param name="pdfDocument">pdf that shall contain the image</param>
/// <returns>PdfFormXObject instance</returns>
public virtual PdfFormXObject CreateXObjectFromProcessingResult(ISvgProcessorResult result, PdfDocument pdfDocument
)
{
ISvgNodeRenderer topSvgRenderer = result.GetRootRenderer();
float width;
float height;
float[] wh = SvgConverter.ExtractWidthAndHeight(topSvgRenderer);
width = wh[0];
height = wh[1];
PdfFormXObject pdfForm = new PdfFormXObject(new Rectangle(0, 0, width, height));
PdfCanvas canvas = new PdfCanvas(pdfForm, pdfDocument);
ResourceResolver tempResolver = new ResourceResolver(null, resourceResolver.GetRetriever());
// TODO DEVSIX-4107 pass the resourceResolver variable (not tempResolver variable) to the
// SvgDrawContext constructor so that the SVG inside the SVG is processed.
SvgDrawContext context = new SvgDrawContext(tempResolver, result.GetFontProvider(), result.GetRootRenderer
());
context.AddNamedObjects(result.GetNamedObjects());
context.PushCanvas(canvas);
ISvgNodeRenderer root = new PdfRootSvgNodeRenderer(topSvgRenderer);
root.Draw(context);
return(pdfForm);
}
public virtual void CalculateNestedViewportDifferentFromParentTest()
{
Rectangle expected = new Rectangle(0, 0, 500, 500);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfDocument document = new PdfDocument(new PdfWriter(new MemoryStream(), new WriterProperties().SetCompressionLevel
(0)));
document.AddNewPage();
PdfFormXObject pdfForm = new PdfFormXObject(expected);
PdfCanvas canvas = new PdfCanvas(pdfForm, document);
context.PushCanvas(canvas);
context.AddViewPort(expected);
SvgTagSvgNodeRenderer parent = new SvgTagSvgNodeRenderer();
SvgTagSvgNodeRenderer renderer = new SvgTagSvgNodeRenderer();
PdfRootSvgNodeRenderer root = new PdfRootSvgNodeRenderer(parent);
IDictionary <String, String> styles = new Dictionary <String, String>();
styles.Put("width", "500");
styles.Put("height", "500");
renderer.SetAttributesAndStyles(styles);
renderer.SetParent(parent);
Rectangle actual = root.CalculateViewPort(context);
NUnit.Framework.Assert.IsTrue(expected.EqualsWithEpsilon(actual));
}
public virtual void LineRendererTest()
{
String filename = "lineSvgRendererTest.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
IDictionary <String, String> lineProperties = new Dictionary <String, String>();
lineProperties.Put("x1", "100");
lineProperties.Put("y1", "800");
lineProperties.Put("x2", "300");
lineProperties.Put("y2", "800");
lineProperties.Put("stroke", "green");
lineProperties.Put("stroke-width", "25");
LineSvgNodeRenderer root = new LineSvgNodeRenderer();
root.SetAttributesAndStyles(lineProperties);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
doc.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(destinationFolder + filename, sourceFolder
+ "cmp_" + filename, destinationFolder, "diff_"));
}
/// <summary>
/// Method that will set properties to be inherited by this branch renderer's
/// children and will iterate over all children in order to draw them.
/// </summary>
/// <param name="context">
/// the object that knows the place to draw this element and
/// maintains its state
/// </param>
protected internal override void DoDraw(SvgDrawContext context)
{
if (GetChildren().Count > 0)
{
// if branch has no children, don't do anything
PdfStream stream = new PdfStream();
stream.Put(PdfName.Type, PdfName.XObject);
stream.Put(PdfName.Subtype, PdfName.Form);
PdfFormXObject xObject = (PdfFormXObject)PdfXObject.MakeXObject(stream);
PdfCanvas newCanvas = new PdfCanvas(xObject, context.GetCurrentCanvas().GetDocument());
ApplyViewBox(context);
//Bounding box needs to be written after viewbox calculations to account for pdf syntax interaction
stream.Put(PdfName.BBox, new PdfArray(context.GetCurrentViewPort()));
context.PushCanvas(newCanvas);
ApplyViewportClip(context);
ApplyViewportTranslationCorrection(context);
foreach (ISvgNodeRenderer child in GetChildren())
{
newCanvas.SaveState();
child.Draw(context);
newCanvas.RestoreState();
}
CleanUp(context);
context.GetCurrentCanvas().AddXObject(xObject, 0, 0);
}
}
){kind=link}
public virtual void PolyPointCheckerTest()
{
PdfDocument doc = new PdfDocument(new PdfWriter(new MemoryStream()));
doc.AddNewPage();
ISvgNodeRenderer root = new PolylineSvgNodeRenderer();
IDictionary <String, String> polyLineAttributes = new Dictionary <String, String>();
polyLineAttributes.Put(SvgConstants.Attributes.POINTS, "0,0 100,100 200,200 300,300");
root.SetAttributesAndStyles(polyLineAttributes);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
IList <Point> expectedPoints = new List <Point>();
expectedPoints.Add(new Point(0, 0));
expectedPoints.Add(new Point(75, 75));
expectedPoints.Add(new Point(150, 150));
expectedPoints.Add(new Point(225, 225));
IList <Point> attributePoints = ((PolylineSvgNodeRenderer)root).GetPoints();
NUnit.Framework.Assert.AreEqual(expectedPoints.Count, attributePoints.Count);
for (int x = 0; x < attributePoints.Count; x++)
{
NUnit.Framework.Assert.AreEqual(expectedPoints[x], attributePoints[x]);
}
}
public virtual void ParseParametersAndCalculateCoordinatesWithBetterPrecisionEllipseTest()
{
String filename = "parseParametersAndCalculateCoordinatesWithBetterPrecisionEllipseTest.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
EllipseSvgNodeRenderer ellipseRenderer = new EllipseSvgNodeRenderer();
ellipseRenderer.SetAttribute(SvgConstants.Attributes.CX, "170.3");
ellipseRenderer.SetAttribute(SvgConstants.Attributes.CY, "339.5");
ellipseRenderer.SetAttribute(SvgConstants.Attributes.RX, "6");
ellipseRenderer.SetAttribute(SvgConstants.Attributes.RY, "6");
// Parse parameters with better precision (in double type) in the method CssUtils#parseAbsoluteLength
ellipseRenderer.SetParameters();
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
// Calculate coordinates with better precision (in double type) in the method EllipseSvgNodeRenderer#doDraw
ellipseRenderer.Draw(context);
String pageContentBytes = iText.IO.Util.JavaUtil.GetStringForBytes(doc.GetPage(1).GetContentBytes(), System.Text.Encoding
.UTF8);
doc.Close();
String expectedResult = "132.22 254.63 m\n" + "132.22 257.11 130.21 259.13 127.72 259.13 c\n" + "125.24 259.13 123.22 257.11 123.22 254.63 c\n"
+ "123.22 252.14 125.24 250.13 127.72 250.13 c\n" + "130.21 250.13 132.22 252.14 132.22 254.63 c";
NUnit.Framework.Assert.IsTrue(pageContentBytes.Contains(expectedResult));
}
){kind=link}
public virtual void ConnectPointsWithSameYCoordinateTest()
{
PdfDocument doc = new PdfDocument(new PdfWriter(new MemoryStream()));
doc.AddNewPage();
ISvgNodeRenderer root = new PolygonSvgNodeRenderer();
IDictionary <String, String> polyLineAttributes = new Dictionary <String, String>();
polyLineAttributes.Put(SvgConstants.Attributes.POINTS, "100,100 100,200 150,200 150,100");
polyLineAttributes.Put(SvgConstants.Attributes.FILL, "none");
polyLineAttributes.Put(SvgConstants.Attributes.STROKE, "black");
root.SetAttributesAndStyles(polyLineAttributes);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
doc.Close();
IList <Point> expectedPoints = new List <Point>();
expectedPoints.Add(new Point(75, 75));
expectedPoints.Add(new Point(75, 150));
expectedPoints.Add(new Point(112.5, 150));
expectedPoints.Add(new Point(112.5, 75));
expectedPoints.Add(new Point(75, 75));
IList <Point> attributePoints = ((PolygonSvgNodeRenderer)root).GetPoints();
NUnit.Framework.Assert.AreEqual(expectedPoints.Count, attributePoints.Count);
for (int x = 0; x < attributePoints.Count; x++)
{
NUnit.Framework.Assert.AreEqual(expectedPoints[x], attributePoints[x]);
}
}
){kind=link}
public virtual void SetupDrawContextAndCanvas()
{
sdc = new SvgDrawContext(new ResourceResolver(""), new FontProvider());
// set compression to none, in case you want to write to disk and inspect the created document
PdfWriter writer = new PdfWriter(new MemoryStream(), new WriterProperties().SetCompressionLevel(0));
PdfDocument doc = new PdfDocument(writer);
cv = new PdfCanvas(doc.AddNewPage());
sdc.PushCanvas(cv);
}
){kind=link}
public virtual void ReferenceNotFoundTest()
{
DummySvgNodeRenderer renderer = new DummySvgNodeRenderer();
SvgDrawContext context = new SvgDrawContext(null, null);
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new ByteArrayOutputStream()));
PdfPage page = pdfDocument.AddNewPage();
context.PushCanvas(new PdfCanvas(page));
ISvgNodeRenderer use = new UseSvgNodeRenderer();
use.SetAttribute(SvgConstants.Attributes.HREF, "dummy");
use.Draw(context);
pdfDocument.Close();
NUnit.Framework.Assert.IsFalse(renderer.IsDrawn());
}
/// <summary>
/// Method that will set properties to be inherited by this branch renderer's
/// children and will iterate over all children in order to draw them.
/// </summary>
/// <param name="context">
/// the object that knows the place to draw this element and
/// maintains its state
/// </param>
protected internal override void DoDraw(SvgDrawContext context)
{
// if branch has no children, don't do anything
if (GetChildren().Count > 0)
{
PdfStream stream = new PdfStream();
stream.Put(PdfName.Type, PdfName.XObject);
stream.Put(PdfName.Subtype, PdfName.Form);
PdfFormXObject xObject = (PdfFormXObject)PdfXObject.MakeXObject(stream);
PdfCanvas newCanvas = new PdfCanvas(xObject, context.GetCurrentCanvas().GetDocument());
ApplyViewBox(context);
bool overflowVisible = IsOverflowVisible(this);
// TODO (DEVSIX-3482) Currently overflow logic works only for markers. Update this code after the ticket will be finished.
if (this is MarkerSvgNodeRenderer && overflowVisible)
{
WriteBBoxAccordingToVisibleOverflow(context, stream);
}
else
{
Rectangle bbBox = context.GetCurrentViewPort().Clone();
stream.Put(PdfName.BBox, new PdfArray(bbBox));
}
if (this is MarkerSvgNodeRenderer)
{
((MarkerSvgNodeRenderer)this).ApplyMarkerAttributes(context);
}
context.PushCanvas(newCanvas);
// TODO (DEVSIX-3482) Currently overflow logic works only for markers. Update this code after the ticket will be finished.
if (!(this is MarkerSvgNodeRenderer) || !overflowVisible)
{
ApplyViewportClip(context);
}
ApplyViewportTranslationCorrection(context);
foreach (ISvgNodeRenderer child in GetChildren())
{
if (!(child is MarkerSvgNodeRenderer))
{
newCanvas.SaveState();
child.Draw(context);
newCanvas.RestoreState();
}
}
CleanUp(context);
// transformation already happened in AbstractSvgNodeRenderer, so no need to do a transformation here
context.GetCurrentCanvas().AddXObject(xObject, 0, 0);
}
}
public virtual void PolyLineInvalidAttributeTest01()
{
NUnit.Framework.Assert.That(() => {
PdfDocument doc = new PdfDocument(new PdfWriter(new MemoryStream()));
doc.AddNewPage();
ISvgNodeRenderer root = new PolylineSvgNodeRenderer();
IDictionary <String, String> polyLineAttributes = new Dictionary <String, String>();
polyLineAttributes.Put(SvgConstants.Attributes.POINTS, "0,0 notAnum,alsoNotANum");
root.SetAttributesAndStyles(polyLineAttributes);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
}
, NUnit.Framework.Throws.InstanceOf <StyledXMLParserException>())
;
}
public virtual void NoBoundingBoxOnXObjectTest()
{
NUnit.Framework.Assert.That(() => {
PdfDocument document = new PdfDocument(new PdfWriter(new MemoryStream(), new WriterProperties().SetCompressionLevel
(0)));
document.AddNewPage();
ISvgNodeRenderer processed = SvgConverter.Process(SvgConverter.Parse("<svg />")).GetRootRenderer();
PdfRootSvgNodeRenderer root = new PdfRootSvgNodeRenderer(processed);
PdfFormXObject pdfForm = new PdfFormXObject(new PdfStream());
PdfCanvas canvas = new PdfCanvas(pdfForm, document);
SvgDrawContext context = new SvgDrawContext(null, null);
context.PushCanvas(canvas);
root.Draw(context);
}
, NUnit.Framework.Throws.InstanceOf <SvgProcessingException>().With.Message.EqualTo(SvgLogMessageConstant.ROOT_SVG_NO_BBOX))
;
}
public virtual void CalculateOutermostViewportWithDifferentXYTest()
{
Rectangle expected = new Rectangle(10, 20, 600, 600);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfDocument document = new PdfDocument(new PdfWriter(new MemoryStream(), new WriterProperties().SetCompressionLevel
(0)));
document.AddNewPage();
PdfFormXObject pdfForm = new PdfFormXObject(expected);
PdfCanvas canvas = new PdfCanvas(pdfForm, document);
context.PushCanvas(canvas);
SvgTagSvgNodeRenderer renderer = new SvgTagSvgNodeRenderer();
PdfRootSvgNodeRenderer root = new PdfRootSvgNodeRenderer(renderer);
Rectangle actual = root.CalculateViewPort(context);
NUnit.Framework.Assert.IsTrue(expected.EqualsWithEpsilon(actual));
}
public virtual void SmoothCurveTest3()
{
String filename = "smoothCurveTest3.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
String svgFilename = "smoothCurveTest3.svg";
Stream xmlStream = new FileStream(sourceFolder + svgFilename, FileMode.Open, FileAccess.Read);
IElementNode rootTag = new JsoupXmlParser().Parse(xmlStream, "ISO-8859-1");
DefaultSvgProcessor processor = new DefaultSvgProcessor();
IBranchSvgNodeRenderer root = (IBranchSvgNodeRenderer)processor.Process(rootTag, null).GetRootRenderer();
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
NUnit.Framework.Assert.IsTrue(root.GetChildren()[0] is PathSvgNodeRenderer);
root.GetChildren()[0].Draw(context);
doc.Close();
}
public virtual void PolylineRendererTest()
{
String filename = "polylineRendererTest.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
ISvgNodeRenderer root = new PolylineSvgNodeRenderer();
IDictionary <String, String> polyLineAttributes = new Dictionary <String, String>();
polyLineAttributes.Put(SvgConstants.Attributes.POINTS, "0,40 40,40 40,80 80,80 80,120 120,120 120,160");
root.SetAttributesAndStyles(polyLineAttributes);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
doc.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareVisually(destinationFolder + filename, sourceFolder
+ "cmp_" + filename, destinationFolder, "diff_"));
}
public virtual void CalculateOutermostTransformation()
{
AffineTransform expected = new AffineTransform(1d, 0d, 0d, -1d, 0d, 600d);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfDocument document = new PdfDocument(new PdfWriter(new MemoryStream(), new WriterProperties().SetCompressionLevel
(0)));
document.AddNewPage();
PdfFormXObject pdfForm = new PdfFormXObject(new Rectangle(0, 0, 600, 600));
PdfCanvas canvas = new PdfCanvas(pdfForm, document);
context.PushCanvas(canvas);
SvgTagSvgNodeRenderer renderer = new SvgTagSvgNodeRenderer();
PdfRootSvgNodeRenderer root = new PdfRootSvgNodeRenderer(renderer);
context.AddViewPort(root.CalculateViewPort(context));
AffineTransform actual = root.CalculateTransformation(context);
NUnit.Framework.Assert.AreEqual(expected, actual);
}
public virtual void InvalidAttributeTest01()
{
NUnit.Framework.Assert.That(() => {
PdfDocument doc = new PdfDocument(new PdfWriter(new MemoryStream()));
doc.AddNewPage();
ISvgNodeRenderer root = new LineSvgNodeRenderer();
IDictionary <String, String> lineProperties = new Dictionary <String, String>();
lineProperties.Put("x1", "1");
lineProperties.Put("y1", "800");
lineProperties.Put("x2", "notAnum");
lineProperties.Put("y2", "alsoNotANum");
root.SetAttributesAndStyles(lineProperties);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
}
, NUnit.Framework.Throws.InstanceOf <StyledXMLParserException>().With.Message.EqualTo(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.NAN, "notAnum")))
;
}
/// <summary>
/// Create an
/// <see cref="iText.Kernel.Pdf.Xobject.PdfFormXObject"/>
/// tied to the passed
/// <c>PdfDocument</c>
/// using the SVG processing result.
/// </summary>
/// <param name="result">Processing result containing the SVG information</param>
/// <param name="pdfDocument">pdf that shall contain the image</param>
/// <returns>PdfFormXObject instance</returns>
public virtual PdfFormXObject CreateXObjectFromProcessingResult(ISvgProcessorResult result, PdfDocument pdfDocument
)
{
ISvgNodeRenderer topSvgRenderer = result.GetRootRenderer();
float width;
float height;
float[] wh = SvgConverter.ExtractWidthAndHeight(topSvgRenderer);
width = wh[0];
height = wh[1];
PdfFormXObject pdfForm = new PdfFormXObject(new Rectangle(0, 0, width, height));
PdfCanvas canvas = new PdfCanvas(pdfForm, pdfDocument);
SvgDrawContext context = new SvgDrawContext(null, result.GetFontProvider());
context.AddNamedObjects(result.GetNamedObjects());
context.PushCanvas(canvas);
ISvgNodeRenderer root = new PdfRootSvgNodeRenderer(topSvgRenderer);
root.Draw(context);
return(pdfForm);
}
public virtual void PolyLineEmptyPointsListTest()
{
String filename = "polyLineEmptyPointsListTest.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
ISvgNodeRenderer root = new PolylineSvgNodeRenderer();
IDictionary <String, String> polyLineAttributes = new Dictionary <String, String>();
root.SetAttributesAndStyles(polyLineAttributes);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
doc.Close();
int numPoints = ((PolylineSvgNodeRenderer)root).GetPoints().Count;
NUnit.Framework.Assert.AreEqual(numPoints, 0);
NUnit.Framework.Assert.IsNull(new CompareTool().CompareVisually(destinationFolder + filename, sourceFolder
+ "cmp_" + filename, destinationFolder, "diff_"));
}
public virtual void InvalidAttributeTest02()
{
IDictionary <String, String> lineProperties = new Dictionary <String, String>();
lineProperties.Put("x1", "100");
lineProperties.Put("y1", "800");
lineProperties.Put("x2", "1 0");
lineProperties.Put("y2", "0 2 0");
lineProperties.Put("stroke", "orange");
String filename = "invalidAttributes02.pdf";
PdfDocument doc = new PdfDocument(new PdfWriter(destinationFolder + filename));
doc.AddNewPage();
LineSvgNodeRenderer root = new LineSvgNodeRenderer();
root.SetAttributesAndStyles(lineProperties);
SvgDrawContext context = new SvgDrawContext(null, null);
PdfCanvas cv = new PdfCanvas(doc, 1);
context.PushCanvas(cv);
root.Draw(context);
doc.Close();
}
/// <summary>
/// When in the svg element
/// <c>overflow</c>
/// is
/// <c>visible</c>
/// the corresponding formXObject
/// should have a BBox (form XObject’s bounding box; see PDF 32000-1:2008 - 8.10.2 Form Dictionaries)
/// that should cover the entire svg space (page in pdf) in order to be able to show parts of the element which are outside the current element viewPort.
/// </summary>
/// <remarks>
/// When in the svg element
/// <c>overflow</c>
/// is
/// <c>visible</c>
/// the corresponding formXObject
/// should have a BBox (form XObject’s bounding box; see PDF 32000-1:2008 - 8.10.2 Form Dictionaries)
/// that should cover the entire svg space (page in pdf) in order to be able to show parts of the element which are outside the current element viewPort.
/// To do this, we get the inverse matrix of all the current transformation matrix changes and apply it to the root viewPort.
/// This allows you to get the root rectangle in the final coordinate system.
/// </remarks>
/// <param name="context">current context to get canvases and view ports</param>
/// <param name="stream">stream to write a BBox</param>
private static void WriteBBoxAccordingToVisibleOverflow(SvgDrawContext context, PdfStream stream)
{
IList <PdfCanvas> canvases = new List <PdfCanvas>();
int canvasesSize = context.Size();
for (int i = 0; i < canvasesSize; i++)
{
canvases.Add(context.PopCanvas());
}
AffineTransform transform = new AffineTransform();
for (int i = canvases.Count - 1; i >= 0; i--)
{
PdfCanvas canvas = canvases[i];
Matrix matrix = canvas.GetGraphicsState().GetCtm();
transform.Concatenate(new AffineTransform(matrix.Get(0), matrix.Get(1), matrix.Get(3), matrix.Get(4), matrix
.Get(6), matrix.Get(7)));
context.PushCanvas(canvas);
}
try {
transform = transform.CreateInverse();
}
catch (NoninvertibleTransformException) {
// Case with zero determiner (see PDF 32000-1:2008 - 8.3.4 Transformation Matrices - NOTE 3)
// for example with a, b, c, d in cm equal to 0
stream.Put(PdfName.BBox, new PdfArray(new Rectangle(0, 0, 0, 0)));
ILog logger = LogManager.GetLogger(typeof(AbstractBranchSvgNodeRenderer));
logger.Warn(SvgLogMessageConstant.UNABLE_TO_GET_INVERSE_MATRIX_DUE_TO_ZERO_DETERMINANT);
return;
}
Point[] points = context.GetRootViewPort().ToPointsArray();
transform.Transform(points, 0, points, 0, points.Length);
Rectangle bbox = Rectangle.CalculateBBox(JavaUtil.ArraysAsList(points));
stream.Put(PdfName.BBox, new PdfArray(bbox));
}