/// <summary>Process the text contained in the text-node</summary>
/// <param name="textNode">node containing text to process</param>
private void ProcessText(ITextNode textNode)
{
ISvgNodeRenderer parentRenderer = this.processorState.Top();
if (parentRenderer is TextSvgBranchRenderer) {
String wholeText = textNode.WholeText();
if (!"".Equals(wholeText) && !SvgTextUtil.IsOnlyWhiteSpace(wholeText)) {
TextLeafSvgNodeRenderer textLeaf = new TextLeafSvgNodeRenderer();
textLeaf.SetParent(parentRenderer);
textLeaf.SetAttribute(SvgConstants.Attributes.TEXT_CONTENT, wholeText);
((TextSvgBranchRenderer)parentRenderer).AddChild(textLeaf);
}
}
}
public virtual float GetTextContentLength(float parentFontSize, PdfFont font)
{
float contentLength = 0.0f;
if (font != null && this.attributesAndStyles != null && this.attributesAndStyles.ContainsKey(SvgConstants.Attributes
.TEXT_CONTENT))
{
//Use own font-size declaration if it is present, parent's otherwise
float fontSize = (float)SvgTextUtil.ResolveFontSize(this, parentFontSize);
String content = this.attributesAndStyles.Get(SvgConstants.Attributes.TEXT_CONTENT);
contentLength = font.GetWidth(content, fontSize);
}
return(contentLength);
}
/// <summary>Process the text contained in the text-node</summary>
/// <param name="textNode">node containing text to process</param>
private void ProcessText(ITextNode textNode)
{
ISvgNodeRenderer parentRenderer = this.processorState.Top();
if (parentRenderer is TextSvgNodeRenderer)
{
// when svg is parsed by jsoup it leaves all whitespace in text element as is. Meaning that
// tab/space indented xml files will retain their tabs and spaces.
// The following regex replaces all whitespace with a single space.
//TODO(RND-906) evaluate regex and trim methods
String trimmedText = iText.IO.Util.StringUtil.ReplaceAll(textNode.WholeText(), "\\s+", " ");
//Trim leading whitespace
trimmedText = SvgTextUtil.TrimLeadingWhitespace(trimmedText);
//Trim trailing whitespace
trimmedText = SvgTextUtil.TrimTrailingWhitespace(trimmedText);
parentRenderer.SetAttribute(SvgConstants.Attributes.TEXT_CONTENT, trimmedText);
}
}
internal static void DrawMarker(SvgDrawContext context, String moveX, String moveY, MarkerVertexType markerToUse
, AbstractSvgNodeRenderer parent)
{
String elementToReUse = parent.attributesAndStyles.Get(markerToUse.ToString());
String normalizedName = SvgTextUtil.FilterReferenceValue(elementToReUse);
ISvgNodeRenderer template = context.GetNamedObject(normalizedName);
//Clone template
ISvgNodeRenderer namedObject = template == null ? null : template.CreateDeepCopy();
if (namedObject is MarkerSvgNodeRenderer &&
// Having markerWidth or markerHeight with negative or zero value disables rendering of the element .
MarkerWidthHeightAreCorrect((MarkerSvgNodeRenderer)namedObject))
{
// setting the parent of the referenced element to this instance
namedObject.SetParent(parent);
namedObject.SetAttribute(SvgConstants.Tags.MARKER, markerToUse.ToString());
namedObject.SetAttribute(SvgConstants.Attributes.X, moveX);
namedObject.SetAttribute(SvgConstants.Attributes.Y, moveY);
namedObject.Draw(context);
// unsetting the parent of the referenced element
namedObject.SetParent(null);
}
}
internal virtual void ResolveFontSize()
{
//TODO: DEVSIX-2607 (re)move static variable
fontSize = (float)SvgTextUtil.ResolveFontSize(this, DEFAULT_FONT_SIZE);
}
/// <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
PdfCanvas currentCanvas = context.GetCurrentCanvas();
if (performRootTransformations)
{
currentCanvas.BeginText();
//Current transformation matrix results in the character glyphs being mirrored, correct with inverse tf
AffineTransform rootTf;
if (this.ContainsAbsolutePositionChange())
{
rootTf = GetTextTransform(this.GetAbsolutePositionChanges(), context);
}
else
{
rootTf = new AffineTransform(TEXTFLIP);
}
currentCanvas.SetTextMatrix(rootTf);
//Reset context of text move
context.ResetTextMove();
//Apply relative move
if (this.ContainsRelativeMove())
{
float[] rootMove = this.GetRelativeTranslation();
context.AddTextMove(rootMove[0], -rootMove[1]);
}
//-y to account for the text-matrix transform we do in the text root to account for the coordinates
//handle white-spaces
if (!whiteSpaceProcessed)
{
SvgTextUtil.ProcessWhiteSpace(this, true);
}
}
ApplyTextRenderingMode(currentCanvas);
if (this.attributesAndStyles != null)
{
ResolveFontSize();
ResolveFont(context);
currentCanvas.SetFontAndSize(font, fontSize);
foreach (ISvgTextNodeRenderer c in children)
{
float childLength = c.GetTextContentLength(fontSize, font);
if (c.ContainsAbsolutePositionChange())
{
//TODO: DEVSIX-2507 support rotate and other attributes
float[][] absolutePositions = c.GetAbsolutePositionChanges();
AffineTransform newTransform = GetTextTransform(absolutePositions, context);
//overwrite the last transformation stored in the context
context.SetLastTextTransform(newTransform);
//Apply transformation
currentCanvas.SetTextMatrix(newTransform);
//Absolute position changes requires resetting the current text move in the context
context.ResetTextMove();
}
//Handle Text-Anchor declarations
float textAnchorCorrection = GetTextAnchorAlignmentCorrection(childLength);
if (!CssUtils.CompareFloats(0f, textAnchorCorrection))
{
context.AddTextMove(textAnchorCorrection, 0);
}
//Move needs to happen before the saving of the state in order for it to cascade beyond
if (c.ContainsRelativeMove())
{
float[] childMove = c.GetRelativeTranslation();
context.AddTextMove(childMove[0], -childMove[1]);
}
//-y to account for the text-matrix transform we do in the text root to account for the coordinates
currentCanvas.SaveState();
c.Draw(context);
context.AddTextMove(childLength, 0);
currentCanvas.RestoreState();
//Restore transformation matrix
if (!context.GetLastTextTransform().IsIdentity())
{
currentCanvas.SetTextMatrix(context.GetLastTextTransform());
}
}
if (performRootTransformations)
{
currentCanvas.EndText();
}
}
}
}
protected internal override void DoDraw(SvgDrawContext context)
{
if (this.attributesAndStyles != null)
{
String elementToReUse = this.attributesAndStyles.Get(SvgConstants.Attributes.XLINK_HREF);
if (elementToReUse == null)
{
elementToReUse = this.attributesAndStyles.Get(SvgConstants.Attributes.HREF);
}
if (elementToReUse != null && !String.IsNullOrEmpty(elementToReUse) && IsValidHref(elementToReUse))
{
String normalizedName = SvgTextUtil.FilterReferenceValue(elementToReUse);
if (!context.IsIdUsedByUseTagBefore(normalizedName))
{
ISvgNodeRenderer template = context.GetNamedObject(normalizedName);
//Clone template
ISvgNodeRenderer namedObject = template == null ? null : template.CreateDeepCopy();
//Resolve parent inheritance
SvgNodeRendererInheritanceResolver iresolver = new SvgNodeRendererInheritanceResolver();
iresolver.ApplyInheritanceToSubTree(this, namedObject);
if (namedObject != null)
{
if (namedObject is AbstractSvgNodeRenderer)
{
((AbstractSvgNodeRenderer)namedObject).SetPartOfClipPath(partOfClipPath);
}
PdfCanvas currentCanvas = context.GetCurrentCanvas();
float x = 0f;
float y = 0f;
if (this.attributesAndStyles.ContainsKey(SvgConstants.Attributes.X))
{
x = CssUtils.ParseAbsoluteLength(this.attributesAndStyles.Get(SvgConstants.Attributes.X));
}
if (this.attributesAndStyles.ContainsKey(SvgConstants.Attributes.Y))
{
y = CssUtils.ParseAbsoluteLength(this.attributesAndStyles.Get(SvgConstants.Attributes.Y));
}
AffineTransform inverseMatrix = null;
if (!CssUtils.CompareFloats(x, 0) || !CssUtils.CompareFloats(y, 0))
{
AffineTransform translation = AffineTransform.GetTranslateInstance(x, y);
currentCanvas.ConcatMatrix(translation);
if (partOfClipPath)
{
try {
inverseMatrix = translation.CreateInverse();
}
catch (NoninvertibleTransformException ex) {
LogManager.GetLogger(typeof(UseSvgNodeRenderer)).Warn(SvgLogMessageConstant.NONINVERTIBLE_TRANSFORMATION_MATRIX_USED_IN_CLIP_PATH
, ex);
}
}
}
// setting the parent of the referenced element to this instance
namedObject.SetParent(this);
namedObject.Draw(context);
// unsetting the parent of the referenced element
namedObject.SetParent(null);
if (inverseMatrix != null)
{
currentCanvas.ConcatMatrix(inverseMatrix);
}
}
}
}
}
}
private void ResolveFontSize()
{
//TODO (DEVSIX-2607) (re)move static variable
fontSize = (float)SvgTextUtil.ResolveFontSize(this, DEFAULT_FONT_SIZE);
}
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