internal void GetShapeableText( Typeface typeface, CharacterBufferReference characterBufferReference, int stringLength, TextRunProperties textRunProperties, CultureInfo digitCulture, bool isRightToLeftParagraph, IList <TextShapeableSymbols> shapeableList, IShapeableTextCollector collector, TextFormattingMode textFormattingMode ) { if (!typeface.Symbol) { Lookup(typeface).GetShapeableText( characterBufferReference, stringLength, textRunProperties, digitCulture, isRightToLeftParagraph, shapeableList, collector, textFormattingMode ); } else { // It's a non-Unicode ("symbol") font, where code points have non-standard meanings. We // therefore want to bypass the usual itemization and font linking. Instead, just map // everything to the default script and first GlyphTypeface. ShapeTypeface shapeTypeface = new ShapeTypeface( typeface.TryGetGlyphTypeface(), null // device font ); collector.Add( shapeableList, new CharacterBufferRange(characterBufferReference, stringLength), textRunProperties, new MS.Internal.Text.TextInterface.ItemProps(), shapeTypeface, 1.0, // scale in Em false, // null shape textFormattingMode ); } }
internal void GetShapeableText( Typeface typeface, CharacterBufferReference characterBufferReference, int stringLength, TextRunProperties textRunProperties, CultureInfo digitCulture, bool isRightToLeftParagraph, IList<TextShapeableSymbols> shapeableList, IShapeableTextCollector collector, TextFormattingMode textFormattingMode ) { if (!typeface.Symbol) { Lookup(typeface).GetShapeableText( characterBufferReference, stringLength, textRunProperties, digitCulture, isRightToLeftParagraph, shapeableList, collector, textFormattingMode ); } else { // It's a non-Unicode ("symbol") font, where code points have non-standard meanings. We // therefore want to bypass the usual itemization and font linking. Instead, just map // everything to the default script and first GlyphTypeface. ShapeTypeface shapeTypeface = new ShapeTypeface( typeface.TryGetGlyphTypeface(), null // device font ); collector.Add( shapeableList, new CharacterBufferRange(characterBufferReference, stringLength), textRunProperties, new MS.Internal.Text.TextInterface.ItemProps(), shapeTypeface, 1.0, // scale in Em false, // null shape textFormattingMode ); } }
internal void GetShapeableText( CharacterBufferReference characterBufferReference, int stringLength, TextRunProperties textRunProperties, CultureInfo digitCulture, bool isRightToLeftParagraph, IList<TextShapeableSymbols> shapeableList, IShapeableTextCollector collector, TextFormattingMode textFormattingMode ) { SpanVector<int> cachedScaledTypefaceIndexSpans; int ichItem = 0; CharacterBufferRange unicodeString = new CharacterBufferRange( characterBufferReference, stringLength ); CultureInfo culture = textRunProperties.CultureInfo; IList<Span> spans; GCHandle gcHandle; IntPtr ptext = characterBufferReference.CharacterBuffer.PinAndGetCharacterPointer(characterBufferReference.OffsetToFirstChar, out gcHandle); // Contextual number substitution cannot be performed on the run level, since it depends // on context - nearest preceding strong character. For this reason, contextual number // substitutions has been already done (TextStore.CreateLSRunsUniformBidiLevel) and // digitCulture has been updated to reflect culture which is dependent on the context. // NumberSubstitutionMethod.AsCulture method can be resolved to Context, hence it also needs to be resolved to appropriate // not ambiguous method. // Both of those values (Context and AsCulture) are resolved to one of following: European, Traditional or NativeNational, // which can be safely handled by DWrite without getting context information. bool ignoreUserOverride; NumberSubstitutionMethod numberSubstitutionMethod = DigitState.GetResolvedSubstitutionMethod(textRunProperties, digitCulture, out ignoreUserOverride); // Itemize the text based on DWrite's text analysis for scripts and number substitution. unsafe { checked { spans = MS.Internal.Text.TextInterface.TextAnalyzer.Itemize( (ushort*)ptext.ToPointer(), (uint)stringLength, culture, MS.Internal.FontCache.DWriteFactory.Instance, isRightToLeftParagraph, digitCulture, ignoreUserOverride, (uint)numberSubstitutionMethod, ClassificationUtility.Instance, UnsafeNativeMethods.CreateTextAnalysisSink, UnsafeNativeMethods.GetScriptAnalysisList, UnsafeNativeMethods.GetNumberSubstitutionList, UnsafeNativeMethods.CreateTextAnalysisSource ); } } characterBufferReference.CharacterBuffer.UnpinCharacterPointer(gcHandle); SpanVector itemSpans = new SpanVector(null, new FrugalStructList<Span>((ICollection<Span>)spans)); cachedScaledTypefaceIndexSpans = new SpanVector<int>(-1); foreach(Span itemSpan in itemSpans) { MapItem( new CharacterBufferRange( unicodeString, ichItem, itemSpan.length ), culture, itemSpan, ref cachedScaledTypefaceIndexSpans, ichItem ); #if DEBUG ValidateMapResult( ichItem, itemSpan.length, ref cachedScaledTypefaceIndexSpans ); #endif ichItem += itemSpan.length; } Debug.Assert(ichItem == unicodeString.Length); // intersect item spans with shapeable spans to create span of shapeable runs int ich = 0; SpanRider itemSpanRider = new SpanRider(itemSpans); SpanRider<int> typefaceIndexSpanRider = new SpanRider<int>(cachedScaledTypefaceIndexSpans); while(ich < unicodeString.Length) { itemSpanRider.At(ich); typefaceIndexSpanRider.At(ich); int index = typefaceIndexSpanRider.CurrentValue; Debug.Assert(index >= 0); int cch = unicodeString.Length - ich; cch = Math.Min(cch, itemSpanRider.Length); cch = Math.Min(cch, typefaceIndexSpanRider.Length); ScaledShapeTypeface scaledShapeTypeface = _cachedScaledTypefaces[index]; collector.Add( shapeableList, new CharacterBufferRange( unicodeString, ich, cch ), textRunProperties, (MS.Internal.Text.TextInterface.ItemProps)itemSpanRider.CurrentElement, scaledShapeTypeface.ShapeTypeface, scaledShapeTypeface.ScaleInEm, scaledShapeTypeface.NullShape, textFormattingMode ); ich += cch; } }
internal void GetShapeableText( CharacterBufferReference characterBufferReference, int stringLength, TextRunProperties textRunProperties, CultureInfo digitCulture, bool isRightToLeftParagraph, IList <TextShapeableSymbols> shapeableList, IShapeableTextCollector collector, TextFormattingMode textFormattingMode ) { SpanVector <int> cachedScaledTypefaceIndexSpans; int ichItem = 0; CharacterBufferRange unicodeString = new CharacterBufferRange( characterBufferReference, stringLength ); CultureInfo culture = textRunProperties.CultureInfo; IList <Span> spans; GCHandle gcHandle; IntPtr ptext = characterBufferReference.CharacterBuffer.PinAndGetCharacterPointer(characterBufferReference.OffsetToFirstChar, out gcHandle); // Contextual number substitution cannot be performed on the run level, since it depends // on context - nearest preceding strong character. For this reason, contextual number // substitutions has been already done (TextStore.CreateLSRunsUniformBidiLevel) and // digitCulture has been updated to reflect culture which is dependent on the context. // NumberSubstitutionMethod.AsCulture method can be resolved to Context, hence it also needs to be resolved to appropriate // not ambiguous method. // Both of those values (Context and AsCulture) are resolved to one of following: European, Traditional or NativeNational, // which can be safely handled by DWrite without getting context information. bool ignoreUserOverride; NumberSubstitutionMethod numberSubstitutionMethod = DigitState.GetResolvedSubstitutionMethod(textRunProperties, digitCulture, out ignoreUserOverride); // Itemize the text based on DWrite's text analysis for scripts and number substitution. unsafe { checked { spans = MS.Internal.Text.TextInterface.TextAnalyzer.Itemize( (ushort *)ptext.ToPointer(), (uint)stringLength, culture, MS.Internal.FontCache.DWriteFactory.Instance, isRightToLeftParagraph, digitCulture, ignoreUserOverride, (uint)numberSubstitutionMethod, ClassificationUtility.Instance, UnsafeNativeMethods.CreateTextAnalysisSink, UnsafeNativeMethods.GetScriptAnalysisList, UnsafeNativeMethods.GetNumberSubstitutionList, UnsafeNativeMethods.CreateTextAnalysisSource ); } } characterBufferReference.CharacterBuffer.UnpinCharacterPointer(gcHandle); SpanVector itemSpans = new SpanVector(null, new FrugalStructList <Span>((ICollection <Span>)spans)); cachedScaledTypefaceIndexSpans = new SpanVector <int>(-1); foreach (Span itemSpan in itemSpans) { MapItem( new CharacterBufferRange( unicodeString, ichItem, itemSpan.length ), culture, itemSpan, ref cachedScaledTypefaceIndexSpans, ichItem ); #if DEBUG ValidateMapResult( ichItem, itemSpan.length, ref cachedScaledTypefaceIndexSpans ); #endif ichItem += itemSpan.length; } Debug.Assert(ichItem == unicodeString.Length); // intersect item spans with shapeable spans to create span of shapeable runs int ich = 0; SpanRider itemSpanRider = new SpanRider(itemSpans); SpanRider <int> typefaceIndexSpanRider = new SpanRider <int>(cachedScaledTypefaceIndexSpans); while (ich < unicodeString.Length) { itemSpanRider.At(ich); typefaceIndexSpanRider.At(ich); int index = typefaceIndexSpanRider.CurrentValue; Debug.Assert(index >= 0); int cch = unicodeString.Length - ich; cch = Math.Min(cch, itemSpanRider.Length); cch = Math.Min(cch, typefaceIndexSpanRider.Length); ScaledShapeTypeface scaledShapeTypeface = _cachedScaledTypefaces[index]; collector.Add( shapeableList, new CharacterBufferRange( unicodeString, ich, cch ), textRunProperties, (MS.Internal.Text.TextInterface.ItemProps)itemSpanRider.CurrentElement, scaledShapeTypeface.ShapeTypeface, scaledShapeTypeface.ScaleInEm, scaledShapeTypeface.NullShape, textFormattingMode ); ich += cch; } }