/// <summary>
/// Compile feature set from the linked list of LSRuns.
/// TypographyProperties should be either all null or all not-null.
/// First is used for internal purposes, also can be used by simple clients.
/// </summary>
internal static void CompileFeatureSet(
TextRunTypographyProperties textRunTypographyProperties,
uint totalLength,
out DWriteFontFeature[][] fontFeatures,
out uint[] fontFeatureRanges
)
{
//
// Quick check for null properties
// Run properties should be all null or all not null
//
if (textRunTypographyProperties == null)
{
fontFeatures = null;
fontFeatureRanges = null;
}
else
{
// End of quick check. We will process custom features now.
fontFeatures = new DWriteFontFeature[1][];
fontFeatureRanges = new uint[1];
fontFeatures[0] = CreateDWriteFontFeatures(textRunTypographyProperties);
fontFeatureRanges[0] = totalLength;
}
}
internal static unsafe void CompileFeatureSet(
LSRun[] lsruns,
int *pcchRuns,
uint totalLength,
out DWriteFontFeature[][] fontFeatures,
out uint[] fontFeatureRanges
)
{
Debug.Assert(lsruns != null && lsruns.Length > 0 && lsruns[0] != null);
//
// Quick check for null properties
// Run properties should be all null or all not null
//
if (lsruns[0].RunProp.TypographyProperties == null)
{
for (int i = 1; i < lsruns.Length; i++)
{
if (lsruns[i].RunProp.TypographyProperties != null)
{
throw new ArgumentException(SR.Get(SRID.CompileFeatureSet_InvalidTypographyProperties));
}
}
fontFeatures = null;
fontFeatureRanges = null;
return;
}
//End of quick check. We will process custom features now.
fontFeatures = new DWriteFontFeature[lsruns.Length][];
fontFeatureRanges = new uint[lsruns.Length];
for (int i = 0; i < lsruns.Length; i++)
{
TextRunTypographyProperties properties = lsruns[i].RunProp.TypographyProperties;
fontFeatures[i] = CreateDWriteFontFeatures(properties);
fontFeatureRanges[i] = checked ((uint)pcchRuns[i]);
}
}
/// <summary>
/// Construct a formatted run
/// </summary>
public FormattedTextSymbols(
GlyphingCache glyphingCache,
TextRun textSymbols,
CharacterBufferRange chars,
bool rightToLeft,
double scalingFactor,
float pixelsPerDip,
TextFormattingMode textFormattingMode,
bool isSideways
)
{
_textFormattingMode = textFormattingMode;
_isSideways = isSideways;
ITextSymbols symbols = textSymbols as ITextSymbols;
Debug.Assert(symbols != null);
// break down a single text run into pieces
IList <TextShapeableSymbols> shapeables = symbols.GetTextShapeableSymbols(
glyphingCache,
chars.CharacterBufferReference,
chars.Length,
rightToLeft, // This is a bool indicating the RTL
// based on the bidi level of text (if applicable).
// For FormattedTextSymbols it is equal to paragraph flow direction.
rightToLeft, // This is the flow direction of the paragraph as
// specified by the user. DWrite needs the paragraph
// flow direction of the paragraph
// while WPF algorithms need the RTL of the text based on
// Bidi if possible.
null, // cultureInfo
null, // textModifierScope
_textFormattingMode,
_isSideways
);
Debug.Assert(shapeables != null && shapeables.Count > 0);
_rightToLeft = rightToLeft;
_glyphs = new Glyphs[shapeables.Count];
CharacterBuffer charBuffer = chars.CharacterBuffer;
int offsetToFirstChar = chars.OffsetToFirstChar;
int i = 0;
int ich = 0;
while (i < shapeables.Count)
{
TextShapeableSymbols current = shapeables[i] as TextShapeableSymbols;
Debug.Assert(current != null);
int cch = current.Length;
int j;
// make a separate character buffer for glyphrun persistence
char[] charArray = new char[cch];
for (j = 0; j < cch; j++)
{
charArray[j] = charBuffer[offsetToFirstChar + ich + j];
}
if (current.IsShapingRequired)
{
ushort[] clusterMap;
ushort[] glyphIndices;
int[] glyphAdvances;
GlyphOffset[] glyphOffsets;
// Note that we dont check for the chance of having multiple
// shapeables shaped together here since we're dealing with
// single-style text. There is virtually no chance to require
// for adjacent runs to shape together. We rely on TextSymbols
// to reduce duplication of the itemized shapeables for performance.
unsafe
{
fixed(char *fixedCharArray = &charArray[0])
{
MS.Internal.Text.TextInterface.TextAnalyzer textAnalyzer = MS.Internal.FontCache.DWriteFactory.Instance.CreateTextAnalyzer();
GlyphTypeface glyphTypeface = current.GlyphTypeFace;
DWriteFontFeature[][] fontFeatures;
uint[] fontFeatureRanges;
uint unsignedCch = checked ((uint)cch);
//LSRun.CompileFeatureSet(current.Properties.TypographyProperties, unsignedCch, out fontFeatures, out fontFeatureRanges);
fontFeatures = new DWriteFontFeature[0][];
fontFeatureRanges = new uint[0];
textAnalyzer.GetGlyphsAndTheirPlacements(
new IntPtr(fixedCharArray),
unsignedCch,
glyphTypeface.FontDWrite,
glyphTypeface.BlankGlyphIndex,
false, // no sideway support yet
/************************************************************************************************/
// Should we break down the runs to know whats the Bidi for every range of characters?
rightToLeft,
current.Properties.CultureInfo,
/************************************************************************************************/
fontFeatures,
fontFeatureRanges,
current.Properties.FontRenderingEmSize,
scalingFactor,
pixelsPerDip,
_textFormattingMode,
current.ItemProps,
out clusterMap,
out glyphIndices,
out glyphAdvances,
out glyphOffsets
);
}
_glyphs[i] = new Glyphs(
current,
charArray,
glyphAdvances,
clusterMap,
glyphIndices,
glyphOffsets,
scalingFactor
);
}
}
else
{
// shaping not required,
// bypass glyphing process altogether
int[] nominalAdvances = new int[charArray.Length];
unsafe
{
fixed(char *fixedCharArray = &charArray[0])
fixed(int *fixedNominalAdvances = &nominalAdvances[0])
{
current.GetAdvanceWidthsUnshaped(
fixedCharArray,
cch,
scalingFactor, // format resolution specified per em,
fixedNominalAdvances
);
}
}
_glyphs[i] = new Glyphs(
current,
charArray,
nominalAdvances,
scalingFactor
);
}
i++;
ich += cch;
}
}
/// <summary>
/// Compile feature set from the linked list of LSRuns.
/// TypographyProperties should be either all null or all not-null.
/// First is used for internal purposes, also can be used by simple clients.
/// </summary>
internal static void CompileFeatureSet(
TextRunTypographyProperties textRunTypographyProperties,
uint totalLength,
out DWriteFontFeature[][] fontFeatures,
out uint[] fontFeatureRanges
)
{
//
// Quick check for null properties
// Run properties should be all null or all not null
//
if (textRunTypographyProperties == null)
{
fontFeatures = null;
fontFeatureRanges = null;
}
else
{
// End of quick check. We will process custom features now.
fontFeatures = new DWriteFontFeature[1][];
fontFeatureRanges = new uint[1];
fontFeatures[0] = CreateDWriteFontFeatures(textRunTypographyProperties);
fontFeatureRanges[0] = totalLength;
}
}
internal static unsafe void CompileFeatureSet(
LSRun[] lsruns,
int* pcchRuns,
uint totalLength,
out DWriteFontFeature[][] fontFeatures,
out uint[] fontFeatureRanges
)
{
Debug.Assert(lsruns != null && lsruns.Length > 0 && lsruns[0] != null);
//
// Quick check for null properties
// Run properties should be all null or all not null
//
if (lsruns[0].RunProp.TypographyProperties == null)
{
for (int i = 1; i < lsruns.Length; i++)
{
if (lsruns[i].RunProp.TypographyProperties != null)
{
throw new ArgumentException(SR.Get(SRID.CompileFeatureSet_InvalidTypographyProperties));
}
}
fontFeatures = null;
fontFeatureRanges = null;
return;
}
//End of quick check. We will process custom features now.
fontFeatures = new DWriteFontFeature[lsruns.Length][];
fontFeatureRanges = new uint[lsruns.Length];
for (int i = 0; i < lsruns.Length; i++)
{
TextRunTypographyProperties properties = lsruns[i].RunProp.TypographyProperties;
fontFeatures[i] = CreateDWriteFontFeatures(properties);
fontFeatureRanges[i] = checked((uint)pcchRuns[i]);
}
}
public void AddFontFeature(DWriteFontFeature fontFeature)
{
this.handle.AddFontFeature(fontFeature);
}