public virtual void ProcessWhiteSpaceBreakLine()
{
//Create tree
TextSvgBranchRenderer root = new TextSvgBranchRenderer();
TextLeafSvgNodeRenderer textBefore = new TextLeafSvgNodeRenderer();
textBefore.SetAttribute(SvgConstants.Attributes.TEXT_CONTENT, "\n" + " text\n" + " "
);
root.AddChild(textBefore);
TextSvgBranchRenderer span = new TextSvgBranchRenderer();
TextLeafSvgNodeRenderer textInSpan = new TextLeafSvgNodeRenderer();
textInSpan.SetAttribute(SvgConstants.Attributes.TEXT_CONTENT, "\n" + " tspan text\n" + " "
);
span.AddChild(textInSpan);
root.AddChild(span);
TextLeafSvgNodeRenderer textAfter = new TextLeafSvgNodeRenderer();
textAfter.SetAttribute(SvgConstants.Attributes.TEXT_CONTENT, "\n" + " after text\n" + " "
);
root.AddChild(textAfter);
//Run
SvgTextUtil.ProcessWhiteSpace(root, true);
root.GetChildren()[0].GetAttribute(SvgConstants.Attributes.TEXT_CONTENT);
//Create result array
String[] actual = new String[] { root.GetChildren()[0].GetAttribute(SvgConstants.Attributes.TEXT_CONTENT),
((TextSvgBranchRenderer)root.GetChildren()[1]).GetChildren()[0].GetAttribute(SvgConstants.Attributes.TEXT_CONTENT
), root.GetChildren()[2].GetAttribute(SvgConstants.Attributes.TEXT_CONTENT) };
//Create expected
String[] expected = new String[] { "text", " tspan text", " after text" };
NUnit.Framework.Assert.AreEqual(expected, actual);
}
public virtual void ProcessFontSizeInPT()
{
float expected = 24;
// Create a renderer
TextSvgBranchRenderer root = new TextSvgBranchRenderer();
root.SetAttribute(SvgConstants.Attributes.FONT_SIZE, "24pt");
//Run
float actual = SvgTextUtil.ResolveFontSize(root, 10);
NUnit.Framework.Assert.AreEqual(expected, actual, EPS);
}
public virtual void ProcessKeywordedFontSize()
{
float expected = 24;
// Create a renderer
TextSvgBranchRenderer root = new TextSvgBranchRenderer();
root.SetAttribute(SvgConstants.Attributes.FONT_SIZE, "xx-large");
//Run
// Parent's font-size doesn't impact the result in this test
float actual = SvgTextUtil.ResolveFontSize(root, 10);
NUnit.Framework.Assert.AreEqual(expected, actual, EPS);
}
/// <summary>Process the whitespace inside the Text Tree.</summary>
/// <remarks>
/// Process the whitespace inside the Text Tree.
/// Whitespace is collapsed and new lines are handled
/// A leading element in each subtree is handled different: the preceding whitespace is trimmed instead of kept
/// </remarks>
/// <param name="root">root of the text-renderer subtree</param>
/// <param name="isLeadingElement">true if this element is a leading element(either the first child or the first element after an absolute position change)
/// </param>
public static void ProcessWhiteSpace(TextSvgBranchRenderer root, bool isLeadingElement)
{
// 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.
bool performLeadingTrim = isLeadingElement;
foreach (ISvgTextNodeRenderer child in root.GetChildren())
{
//If leaf, process contents, if branch, call function again
if (child is TextSvgBranchRenderer)
{
//Branch processing
ProcessWhiteSpace((TextSvgBranchRenderer)child, child.ContainsAbsolutePositionChange());
((TextSvgBranchRenderer)child).MarkWhiteSpaceProcessed();
}
if (child is TextLeafSvgNodeRenderer)
{
//Leaf processing
TextLeafSvgNodeRenderer leafRend = (TextLeafSvgNodeRenderer)child;
//Process text
String toProcess = leafRend.GetAttribute(SvgConstants.Attributes.TEXT_CONTENT);
toProcess = iText.IO.Util.StringUtil.ReplaceAll(toProcess, "\\s+", " ");
toProcess = WhiteSpaceUtil.CollapseConsecutiveSpaces(toProcess);
if (performLeadingTrim)
{
//Trim leading white spaces
toProcess = TrimLeadingWhitespace(toProcess);
toProcess = TrimTrailingWhitespace(toProcess);
performLeadingTrim = false;
}
else
{
//only collapse whitespace
toProcess = TrimTrailingWhitespace(toProcess);
}
leafRend.SetAttribute(SvgConstants.Attributes.TEXT_CONTENT, toProcess);
}
}
}
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