public LineBreakpoints AnalyzeLineBreakpoints(IntPtr[] text_ptrs, uint[] lengths, CultureInfo culture,
Factory factory,
uint range_start, uint range_length, bool isRightToLeft, CultureInfo numberCulture,
bool ignoreUserOverride, uint numberSubstitutionMethod)
{
IDWriteTextAnalyzer pTextAnalyzer = null;
TextAnalyzerSink textAnalyzerSink = null;
TextAnalyzerSource textAnalyzerSource = null;
IDWriteFactory pDWriteFactory = factory.DWriteFactory;
pTextAnalyzer = pDWriteFactory.CreateTextAnalyzer();
string numberSubstitutionLocaleName = numberCulture != null ? numberCulture.IetfLanguageTag : null;
textAnalyzerSource = new TextAnalyzerSource(
text_ptrs,
lengths,
culture.IetfLanguageTag,
pDWriteFactory,
isRightToLeft,
numberSubstitutionLocaleName,
ignoreUserOverride,
numberSubstitutionMethod);
textAnalyzerSink = new TextAnalyzerSink();
textAnalyzerSink.InitializeLineBreakpoints((int)range_start, (int)(range_start + range_length));
pTextAnalyzer.AnalyzeLineBreakpoints(textAnalyzerSource, range_start, range_length, textAnalyzerSink);
return(textAnalyzerSink.LineBreakpoints);
}
unsafe static public IList <Span> Itemize(
char *text,
uint length,
CultureInfo culture,
Factory factory,
bool isRightToLeftParagraph,
CultureInfo numberCulture,
bool ignoreUserOverride,
uint numberSubstitutionMethod,
IClassification classificationUtility
)
{
// If a text has zero length then we do not need to itemize.
if (length > 0)
{
IDWriteTextAnalyzer pTextAnalyzer = null;
TextAnalyzerSink textAnalyzerSink = null;
TextAnalyzerSource textAnalyzerSource = null;
IDWriteFactory pDWriteFactory = factory.DWriteFactory;
pTextAnalyzer = pDWriteFactory.CreateTextAnalyzer();
string numberSubstitutionLocaleName = numberCulture != null ? numberCulture.IetfLanguageTag : null;
// NOTE: the text parameter is NOT copied inside TextAnalysisSource to improve perf.
// This is ok as long as we use the TextAnalysisSource in the same scope as we hold ref to text.
// If we are ever to change this pattern then this should be revisited in TextAnalysisSource in
// PresentationNative.
textAnalyzerSource = new TextAnalyzerSource(
text,
length,
culture.IetfLanguageTag,
pDWriteFactory,
isRightToLeftParagraph,
numberSubstitutionLocaleName,
ignoreUserOverride,
numberSubstitutionMethod);
textAnalyzerSink = new TextAnalyzerSink();
// Analyze the script ranges.
pTextAnalyzer.AnalyzeScript(textAnalyzerSource,
0,
length,
textAnalyzerSink);
// Analyze the number substitution ranges.
pTextAnalyzer.AnalyzeNumberSubstitution(textAnalyzerSource,
0,
length,
textAnalyzerSink);
var dwriteScriptAnalysisList = textAnalyzerSink.ScriptAnalysis;
var dwriteNumberSubstitutionList = textAnalyzerSink.NumberSubstitution;
TextItemizer textItemizer = new TextItemizer(dwriteScriptAnalysisList, dwriteNumberSubstitutionList);
return(AnalyzeExtendedAndItemize(textItemizer, new IntPtr(text), length, numberCulture, classificationUtility));
}
else
{
return(null);
}
}