private static TextLineRun CreateRunForTab(TextRun textRun, TextParagraphProperties paragraphProperties)
{
var tabRun = new TextCharacters(TabString, textRun.Properties);
var stringRange = tabRun.StringRange;
var run = new TextLineRun(1, tabRun)
{
IsTab = true,
StringRange = stringRange,
Width = paragraphProperties.DefaultIncrementalTab
};
run._glyphWidths = new double[] { run.Width };
return(run);
}
private static TextLineRun CreateRunForTab(TextRun textRun)
{
var spaceRun = new TextCharacters(" ", textRun.Properties);
var stringRange = spaceRun.StringRange;
var run = new TextLineRun(1, spaceRun)
{
IsTab = true,
StringRange = stringRange,
// TODO: get from para props
Width = 40
};
run.SetGlyphWidths();
return(run);
}
private static TextLineRun CreateRunForSpecialChars(TextSource textSource, StringRange stringRange, TextRun textRun, int index, TextParagraphProperties paragraphProperties)
{
switch (stringRange[0])
{
case '\r':
var runLength = 1;
if (stringRange.Length > 1 && stringRange[1] == '\n')
{
runLength = 2;
}
else if (stringRange.Length == 1)
{
var nextRun = textSource.GetTextRun(index + 1);
var range = nextRun.GetStringRange();
if (range.Length > 0 && range[0] == '\n')
{
var eolRun = new TextCharacters(NewlineString, textRun.Properties);
return(new TextLineRun(eolRun.Length, eolRun)
{
IsEnd = true
});
}
}
return(new TextLineRun(runLength, textRun)
{
IsEnd = true
});
case '\n':
return(new TextLineRun(1, textRun)
{
IsEnd = true
});
case '\t':
return(CreateRunForTab(textRun, paragraphProperties));
default:
return(null);
}
}
