public static TextRunProperties GetGlobalTextRunProperties() {
if (textRunProperties == null) {
textRunProperties = CreateGlobalTextRunProperties();
}
return textRunProperties;
}
public TextRunProperties GetTextRunProperties(TextRunProperties defaultTextRunProperties)
{
var item = (CompletionItem as DescriptionModifyingCompletionItem)?.CompletionItem ?? CompletionItem;
return (item.CompletionProvider as ICustomCompletionItemFormatter)?.GetTextRunProperties(item, defaultTextRunProperties)
?? defaultTextRunProperties;
}
public static bool Equals(TextRunProperties a, TextRunProperties b) {
if (a == b)
return true;
if (a == null || b == null)
return false;
if (a.FontHintingEmSize != b.FontHintingEmSize)
return false;
if (a.FontRenderingEmSize != b.FontRenderingEmSize)
return false;
if (a.TextDecorations != b.TextDecorations) // We don't use it so this is enough
return false;
if (a.TextEffects != b.TextEffects) // We don't use it so this is enough
return false;
if (!a.CultureInfo.Equals(b.CultureInfo))
return false;
if (!a.Typeface.Equals(b.Typeface))
return false;
if (!Equals(a.BackgroundBrush, b.BackgroundBrush))
return false;
if (!Equals(a.ForegroundBrush, b.ForegroundBrush))
return false;
if (a.BaselineAlignment != b.BaselineAlignment)
return false;
if (!Equals(a.NumberSubstitution, b.NumberSubstitution))
return false;
if (!Equals(a.TypographyProperties, b.TypographyProperties))
return false;
return true;
}
/// <summary>
/// Store <paramref name="timeStamp"/> and updates the text for the visual.
/// </summary>
/// <param name="timeStamp">Time of the event.</param>
/// <param name="line">The line that this time stamp corresponds to.</param>
/// <param name="view">The <see cref="IWpfTextView"/> to whom the <paramref name="line"/> belongs.</param>
/// <param name="formatting">Properties for the time stamp text.</param>
/// <param name="marginWidth">Used to calculate the horizontal offset for <see cref="OnRender(DrawingContext)"/>.</param>
/// <param name="verticalOffset">Used to calculate the vertical offset for <see cref="OnRender(DrawingContext)"/>.</param>
/// <param name="showHours">Option to show hours on the time stamp.</param>
/// <param name="showMilliseconds">Option to show milliseconds on the time stamp.</param>
internal void UpdateVisual(DateTime timeStamp, ITextViewLine line, IWpfTextView view, TextRunProperties formatting, double marginWidth, double verticalOffset,
bool showHours, bool showMilliseconds)
{
this.LineTag = line.IdentityTag;
if (timeStamp != this.TimeStamp)
{
this.TimeStamp = timeStamp;
string text = GetFormattedTime(timeStamp, showHours, showMilliseconds);
TextFormattingMode textFormattingMode = view.FormattedLineSource.UseDisplayMode ? TextFormattingMode.Display : TextFormattingMode.Ideal;
_text = new FormattedText(text, CultureInfo.InvariantCulture, FlowDirection.LeftToRight,
formatting.Typeface, formatting.FontRenderingEmSize, formatting.ForegroundBrush,
InvariantNumberSubstitution, textFormattingMode);
_horizontalOffset = Math.Round(marginWidth - _text.Width);
this.InvalidateVisual(); // force redraw
}
double newVerticalOffset = line.TextTop - view.ViewportTop + verticalOffset;
if (newVerticalOffset != _verticalOffset)
{
_verticalOffset = newVerticalOffset;
this.InvalidateVisual(); // force redraw
}
}
/// <summary>
/// Modifies the properties of a text run.
/// </summary>
/// <param name="properties">Properties of a text run or the return value of
/// ModifyProperties for a nested text modifier.</param>
/// <returns>Returns the actual text run properties to be used for formatting,
/// subject to further modification by text modifiers at outer scopes.</returns>
public sealed override TextRunProperties ModifyProperties(TextRunProperties properties)
{
// Get the text decorations applied to the text modifier run. If there are
// none, we don't change anything.
if (properties == null || _modifierDecorations == null || _modifierDecorations.Count == 0)
return properties;
// Let brush be the foreground brush for the text modifier run. Any text
// decorations defined at the text modifier scope that have a null Pen
// should be drawn using this brush, which means we may need to copy some
// TextDecoration objects and set the Pen property on the copies. We can
// elide this if the same brush is used at both scopes. We shouldn't miss
// too many optimization opportunities by using the (lower cost) reference
// comparison here because in most cases where the brushes are equal it's
// because it's an inherited property.
Brush brush = _modifierBrush;
if (object.ReferenceEquals(brush, properties.ForegroundBrush))
{
// No need to set the pen property.
brush = null;
}
// We're going to create a merged set of text decorations.
TextDecorationCollection mergedDecorations;
// Get the text decorations of the affected run, if any.
TextDecorationCollection runDecorations = properties.TextDecorations;
if (runDecorations == null || runDecorations.Count == 0)
{
// Only the text modifier run defines text decorations so
// we don't need to merge anything.
if (brush == null)
{
// Use the text decorations of the modifier run.
mergedDecorations = _modifierDecorations;
}
else
{
// The foreground brushes differ so copy the text decorations to a
// new collection and make sure each has a non-null pen.
mergedDecorations = CopyTextDecorations(_modifierDecorations, brush);
}
}
else
{
// Add the modifier decorations first because we want text decorations
// defined at the inner scope (e.g., by the run) to be drawn on top.
mergedDecorations = CopyTextDecorations(_modifierDecorations, brush);
// Add the text decorations defined at the inner scope; we never need
// to set the pen for these because they should be drawn using the
// foreground brush.
foreach (TextDecoration td in runDecorations)
{
mergedDecorations.Add(td);
}
}
return new MergedTextRunProperties(properties, mergedDecorations);
}
internal void Update(
string text,
ITextViewLine line,
IWpfTextView view,
TextRunProperties formatting,
double marginWidth,
double verticalOffset)
{
LineTag = line.IdentityTag;
if (_text == null || !string.Equals(_text, text, StringComparison.Ordinal))
{
_text = text;
_formattedText = new FormattedText(
_text,
CultureInfo.InvariantCulture,
FlowDirection.LeftToRight,
formatting.Typeface,
formatting.FontRenderingEmSize,
formatting.ForegroundBrush);
_horizontalOffset = Math.Round(marginWidth - _formattedText.Width);
InvalidateVisual();
}
var num = line.TextTop - view.ViewportTop + verticalOffset;
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (num == _verticalOffset) return;
_verticalOffset = num;
InvalidateVisual();
}
/// <summary>
/// Internal constructor of TextContent
/// </summary>
private TextCharacters(
CharacterBufferReference characterBufferReference,
int length,
TextRunProperties textRunProperties
)
{
if (length <= 0)
{
throw new ArgumentOutOfRangeException("length", SR.Get(SRID.ParameterMustBeGreaterThanZero));
}
if (textRunProperties == null)
{
throw new ArgumentNullException("textRunProperties");
}
if (textRunProperties.Typeface == null)
{
throw new ArgumentNullException("textRunProperties.Typeface");
}
if (textRunProperties.CultureInfo == null)
{
throw new ArgumentNullException("textRunProperties.CultureInfo");
}
if (textRunProperties.FontRenderingEmSize <= 0)
{
throw new ArgumentOutOfRangeException("textRunProperties.FontRenderingEmSize", SR.Get(SRID.ParameterMustBeGreaterThanZero));
}
_characterBufferReference = characterBufferReference;
_length = length;
_textRunProperties = textRunProperties;
}
/// <summary>
/// Add shapeable text object to the list
/// </summary>
void IShapeableTextCollector.Add(
IList <TextShapeableSymbols> shapeables,
CharacterBufferRange characterBufferRange,
TextRunProperties textRunProperties,
MS.Internal.Text.TextInterface.ItemProps textItem,
ShapeTypeface shapeTypeface,
double emScale,
bool nullShape,
TextFormattingMode textFormattingMode
)
{
Debug.Assert(shapeables != null);
shapeables.Add(
new TextShapeableCharacters(
characterBufferRange,
textRunProperties,
textRunProperties.FontRenderingEmSize * emScale,
textItem,
shapeTypeface,
nullShape,
textFormattingMode,
false
)
);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="cch">Number of text position in the text array occupied by the inline object.</param>
/// <param name="element">UIElement representing the inline object.</param>
/// <param name="textProps">Text run properties for the inline object.</param>
/// <param name="host">Paragraph - the host of the inline object.</param>
internal InlineObjectRun(int cch, UIElement element, TextRunProperties textProps, TextParagraph host)
{
_cch = cch;
_textProps = textProps;
_host = host;
_inlineUIContainer = (InlineUIContainer)LogicalTreeHelper.GetParent(element);
}
/// <summary>
/// Construct a text trailing word ellipsis collapsing properties
/// </summary>
/// <param name="width">width in which collapsing is constrained to</param>
/// <param name="textRunProperties">text run properties of ellispis symbol</param>
public TextTrailingWordEllipsis(
double width,
TextRunProperties textRunProperties
)
{
_width = width;
_ellipsis = new TextCharacters(StringHorizontalEllipsis, textRunProperties);
}
/// <summary>
/// Construct a text trailing character ellipsis collapsing properties
/// </summary>
/// <param name="width">width in which collapsing is constrained to</param>
/// <param name="textRunProperties">text run properties of ellispis symbol</param>
public TextTrailingCharacterEllipsis(
double width,
TextRunProperties textRunProperties
)
{
_width = width;
_ellipsis = new TextCharacters(StringHorizontalEllipsis, textRunProperties);
}
/// <summary>
/// Modifies the specified text run properties by invoking the modifier at
/// the current scope and all containing scopes.
/// </summary>
/// <param name="properties">Properties to modify.</param>
/// <returns>Returns the text run properties after modification.</returns>
internal TextRunProperties ModifyProperties(TextRunProperties properties)
{
for (TextModifierScope scope = this; scope != null; scope = scope._parentScope)
{
properties = scope._modifier.ModifyProperties(properties);
}
return(properties);
}
protected TextLine GetLine(TextRunProperties runProperties, TextSource textSource, int column = 0) {
return TextFormatter.Create().FormatLine(
textSource,
column,
96 * 6,
new SimpleParagraphProperties { defaultTextRunProperties = runProperties },
null);
}
/// <summary>
/// Modifies the specified text run properties by invoking the modifier at
/// the current scope and all containing scopes.
/// </summary>
/// <param name="properties">Properties to modify.</param>
/// <returns>Returns the text run properties after modification.</returns>
internal TextRunProperties ModifyProperties(TextRunProperties properties)
{
for (TextModifierScope scope = this; scope != null; scope = scope._parentScope)
{
properties = scope._modifier.ModifyProperties(properties);
}
return properties;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="dcp">Text position of the inline object in the text array.</param>
/// <param name="cch">Number of text position in the text array occupied by the inline object.</param>
/// <param name="element">UIElement representing the inline object.</param>
/// <param name="textProps">Text run properties for the inline object.</param>
/// <param name="host">TextBlock element - the host of the inline object.</param>
internal InlineObject(int dcp, int cch, UIElement element, TextRunProperties textProps, System.Windows.Controls.TextBlock host)
{
_dcp = dcp;
_cch = cch;
_element = element;
_textProps = textProps;
_host = host;
}
/// <summary>
/// Creates a new FormattedTextRun.
/// </summary>
public FormattedTextRun(FormattedTextElement element, TextRunProperties properties)
{
if (element == null)
throw new ArgumentNullException("element");
if (properties == null)
throw new ArgumentNullException("properties");
this.properties = properties;
this.element = element;
}
public HexLinePart(int index, int column, VST.Span span, TextRunProperties textRunProperties) {
Debug.Assert(!span.IsEmpty);
Debug.Assert(textRunProperties != null);
Index = index;
Column = column;
Span = span;
AdornmentElement = null;
TextRunProperties = textRunProperties;
}
public HexLinePart(int index, int column, VST.Span span, HexAdornmentElement adornmentElement, TextRunProperties textRunProperties) {
Debug.Assert(adornmentElement != null);
Debug.Assert(textRunProperties != null);
Index = index;
Column = column;
Span = span;
AdornmentElement = adornmentElement;
TextRunProperties = textRunProperties;
}
protected FormattedText GetFormattedText(string text, TextRunProperties runProperties) {
return new FormattedText(
text,
CultureInfo.CurrentUICulture,
FlowDirection.LeftToRight,
runProperties.Typeface,
runProperties.FontRenderingEmSize,
Brushes.Black);
}
/// <summary>
/// Construct a paragraph break run
/// </summary>
/// <param name="length">number of characters</param>
/// <param name="textRunProperties">linebreak text run properties</param>
public TextEndOfParagraph(
int length,
TextRunProperties textRunProperties
)
: base(
length,
textRunProperties
)
{}
public HexTextRunProperties(TextRunProperties other) {
this._BackgroundBrush = other.BackgroundBrush;
this._CultureInfo = other.CultureInfo;
this._FontHintingEmSize = other.FontHintingEmSize;
this._FontRenderingEmSize = other.FontRenderingEmSize;
this._ForegroundBrush = other.ForegroundBrush;
this._TextDecorations = other.TextDecorations;
this._TextEffects = other.TextEffects;
this._Typeface = other.Typeface;
}
/// <summary>
/// Construct a paragraph break run
/// </summary>
/// <param name="length">number of characters</param>
/// <param name="textRunProperties">linebreak text run properties</param>
public TextEndOfParagraph(
int length,
TextRunProperties textRunProperties
)
: base(
length,
textRunProperties
)
{
}
/// <summary>
/// Construct a run for text content from string
/// </summary>
public TextCharacters(
string characterString,
TextRunProperties textRunProperties
) :
this(
characterString,
0, // offserToFirstChar
(characterString == null) ? 0 : characterString.Length,
textRunProperties
)
{}
public unsafe TextCharacters(
char *unsafeCharacterString,
int length,
TextRunProperties textRunProperties
) :
this(
new CharacterBufferReference(unsafeCharacterString, length),
length,
textRunProperties
)
{
}
/// <summary>
/// Construct a run for text content from string
/// </summary>
public TextCharacters(
string characterString,
TextRunProperties textRunProperties
) :
this(
characterString,
0, // offserToFirstChar
(characterString == null) ? 0 : characterString.Length,
textRunProperties
)
{
}
/// <summary>
/// Construct a run of text content from character array
/// </summary>
public TextCharacters(
char[] characterArray,
int offsetToFirstChar,
int length,
TextRunProperties textRunProperties
) :
this(
new CharacterBufferReference(characterArray, offsetToFirstChar),
length,
textRunProperties
)
{}
/// <summary>
/// Construct a run for text content from string
/// </summary>
public TextCharacters(
string characterString,
int offsetToFirstChar,
int length,
TextRunProperties textRunProperties
) :
this(
new CharacterBufferReference(characterString, offsetToFirstChar),
length,
textRunProperties
)
{}
/// <summary>
/// Creates a new InlineObjectRun instance.
/// </summary>
/// <param name="length">The length of the TextRun.</param>
/// <param name="properties">The <see cref="TextRunProperties"/> to use.</param>
/// <param name="element">The <see cref="UIElement"/> to display.</param>
public InlineObjectRun(int length, TextRunProperties properties, UIElement element)
{
if (length <= 0)
throw new ArgumentOutOfRangeException("length", length, "Value must be positive");
if (properties == null)
throw new ArgumentNullException("properties");
if (element == null)
throw new ArgumentNullException("element");
this.length = length;
this.properties = properties;
this.element = element;
}
/// <summary>
/// Construct a run for text content from string
/// </summary>
public TextCharacters(
string characterString,
int offsetToFirstChar,
int length,
TextRunProperties textRunProperties
) :
this(
new CharacterBufferReference(characterString, offsetToFirstChar),
length,
textRunProperties
)
{
}
/// <summary>
/// Construct a run of text content from character array
/// </summary>
public TextCharacters(
char[] characterArray,
int offsetToFirstChar,
int length,
TextRunProperties textRunProperties
) :
this(
new CharacterBufferReference(characterArray, offsetToFirstChar),
length,
textRunProperties
)
{
}
/// <summary>
/// Construct a linebreak run
/// </summary>
/// <param name="length">number of characters</param>
/// <param name="textRunProperties">linebreak text run properties</param>
public TextEndOfLine(
int length,
TextRunProperties textRunProperties
)
{
if (length <= 0)
throw new ArgumentOutOfRangeException("length", SR.Get(SRID.ParameterMustBeGreaterThanZero));
if (textRunProperties != null && textRunProperties.Typeface == null)
throw new ArgumentNullException("textRunProperties.Typeface");
_length = length;
_textRunProperties = textRunProperties;
}
public GenericTextParagraphProperties(FontRendering newRendering)
{
_flowDirection = FlowDirection.LeftToRight;
_textAlignment = newRendering.TextAlignment;
_firstLineInParagraph = false;
_alwaysCollapsible = false;
_defaultTextRunProperties = new GenericTextRunProperties(
newRendering.Typeface, newRendering.FontSize, newRendering.FontSize,
newRendering.TextDecorations, newRendering.TextColor, null,
BaselineAlignment.Baseline, CultureInfo.CurrentUICulture);
_textWrap = TextWrapping.Wrap;
_lineHeight = 0;
_indent = 0;
_paragraphIndent = 0;
}
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
);
}
}
/// <summary>
/// Construct a linebreak run
/// </summary>
/// <param name="length">number of characters</param>
/// <param name="textRunProperties">linebreak text run properties</param>
public TextEndOfLine(
int length,
TextRunProperties textRunProperties
)
{
if (length <= 0)
{
throw new ArgumentOutOfRangeException("length", SR.Get(SRID.ParameterMustBeGreaterThanZero));
}
if (textRunProperties != null && textRunProperties.Typeface == null)
{
throw new ArgumentNullException("textRunProperties.Typeface");
}
_length = length;
_textRunProperties = textRunProperties;
}
public GenericTextParagraphProperties(
FlowDirection flowDirection,
TextAlignment textAlignment,
bool firstLineInParagraph,
bool alwaysCollapsible,
TextRunProperties defaultTextRunProperties,
TextWrapping textWrap,
double lineHeight,
double indent)
{
_flowDirection = flowDirection;
_textAlignment = textAlignment;
_firstLineInParagraph = firstLineInParagraph;
_alwaysCollapsible = alwaysCollapsible;
_defaultTextRunProperties = defaultTextRunProperties;
_textWrap = textWrap;
_lineHeight = lineHeight;
_indent = indent;
}
/// <summary>
/// Construct a shapeable characters object
/// </summary>
/// <remarks>
/// The shapeTypeface parameter can be null if and only if CheckFastPathNominalGlyphs
/// has previously returned true.
/// </remarks>
internal TextShapeableCharacters(
CharacterBufferRange characterRange,
TextRunProperties properties,
double emSize,
ItemProps textItem,
ShapeTypeface shapeTypeface,
bool nullShape,
TextFormattingMode textFormattingMode,
bool isSideways
)
{
_isSideways = isSideways;
_textFormattingMode = textFormattingMode;
_characterBufferRange = characterRange;
_properties = properties;
_emSize = emSize;
_textItem = textItem;
_shapeTypeface = shapeTypeface;
_nullShape = nullShape;
}
/// <summary>
/// Construct a shapeable characters object
/// </summary>
/// <remarks>
/// The shapeTypeface parameter can be null if and only if CheckFastPathNominalGlyphs
/// has previously returned true.
/// </remarks>
internal TextShapeableCharacters(
CharacterBufferRange characterRange,
TextRunProperties properties,
double emSize,
ItemProps textItem,
ShapeTypeface shapeTypeface,
bool nullShape,
TextFormattingMode textFormattingMode,
bool isSideways
)
{
_isSideways = isSideways;
_textFormattingMode = textFormattingMode;
_characterBufferRange = characterRange;
_properties = properties;
_emSize = emSize;
_textItem = textItem;
_shapeTypeface = shapeTypeface;
_nullShape = nullShape;
}
/// <summary>
/// Creates a new VisualLineElementTextRunProperties instance that copies its values
/// from the specified <paramref name="textRunProperties"/>.
/// For the <see cref="TextDecorations"/> and <see cref="TextEffects"/> collections, deep copies
/// are created if those collections are not frozen.
/// </summary>
public VisualLineElementTextRunProperties(TextRunProperties textRunProperties)
{
if (textRunProperties == null)
throw new ArgumentNullException("textRunProperties");
backgroundBrush = textRunProperties.BackgroundBrush;
baselineAlignment = textRunProperties.BaselineAlignment;
cultureInfo = textRunProperties.CultureInfo;
fontHintingEmSize = textRunProperties.FontHintingEmSize;
fontRenderingEmSize = textRunProperties.FontRenderingEmSize;
foregroundBrush = textRunProperties.ForegroundBrush;
typeface = textRunProperties.Typeface;
textDecorations = textRunProperties.TextDecorations;
if (textDecorations != null && !textDecorations.IsFrozen) {
textDecorations = textDecorations.Clone();
}
textEffects = textRunProperties.TextEffects;
if (textEffects != null && !textEffects.IsFrozen) {
textEffects = textEffects.Clone();
}
}
/// <summary>
/// Resolves number substitution method to one of following values:
/// European
/// Traditional
/// NativeNational
/// </summary>
internal static NumberSubstitutionMethod GetResolvedSubstitutionMethod(TextRunProperties properties, CultureInfo digitCulture, out bool ignoreUserOverride)
{
ignoreUserOverride = true;
NumberSubstitutionMethod resolvedMethod = NumberSubstitutionMethod.European;
if (digitCulture != null)
{
NumberSubstitutionMethod method;
CultureInfo numberCulture = GetNumberCulture(properties, out method, out ignoreUserOverride);
if (numberCulture != null)
{
// First, disambiguate AsCulture method, which depends on digit substitution contained in CultureInfo.NumberFormat
if (method == NumberSubstitutionMethod.AsCulture)
{
switch (numberCulture.NumberFormat.DigitSubstitution)
{
case DigitShapes.Context:
method = NumberSubstitutionMethod.Context;
break;
case DigitShapes.NativeNational:
method = NumberSubstitutionMethod.NativeNational;
break;
default:
method = NumberSubstitutionMethod.European;
break;
}
}
// Next, disambiguate Context method, which maps to Traditional if digitCulture != null
resolvedMethod = method;
if (resolvedMethod == NumberSubstitutionMethod.Context)
{
resolvedMethod = NumberSubstitutionMethod.Traditional;
}
}
}
return resolvedMethod;
}
public TextTrailingWordEllipsis(double width, TextRunProperties textRunProperties)
{
}
public FoldingLineTextRun(FormattedTextElement element, TextRunProperties properties)
: base(element, properties)
{
}
public abstract TextRunProperties ModifyProperties(TextRunProperties properties);
public TextEndOfLine(int length, TextRunProperties textRunProperties)
{
}
public TextEndOfParagraph(int length, TextRunProperties textRunProperties) : base(default(int))
{
}
public abstract TextRunProperties ModifyProperties(TextRunProperties properties);
public TextTrailingCharacterEllipsis(double width, TextRunProperties textRunProperties)
{
}
/// <summary>
/// Break a run of text into individually shape items.
/// Shape items are delimited by
/// Change of writing system
/// Change of glyph typeface
/// </summary>
IList <TextShapeableSymbols> ITextSymbols.GetTextShapeableSymbols(
GlyphingCache glyphingCache,
CharacterBufferReference characterBufferReference,
int length,
bool rightToLeft,
bool isRightToLeftParagraph,
CultureInfo digitCulture,
TextModifierScope textModifierScope,
TextFormattingMode textFormattingMode,
bool isSideways
)
{
if (characterBufferReference.CharacterBuffer == null)
{
throw new ArgumentNullException("characterBufferReference.CharacterBuffer");
}
int offsetToFirstChar = characterBufferReference.OffsetToFirstChar - _characterBufferReference.OffsetToFirstChar;
Debug.Assert(characterBufferReference.CharacterBuffer == _characterBufferReference.CharacterBuffer);
Debug.Assert(offsetToFirstChar >= 0 && offsetToFirstChar < _length);
if (length < 0 ||
offsetToFirstChar + length > _length)
{
length = _length - offsetToFirstChar;
}
// Get the actual text run properties in effect, after invoking any
// text modifiers that may be in scope.
TextRunProperties textRunProperties = _textRunProperties;
if (textModifierScope != null)
{
textRunProperties = textModifierScope.ModifyProperties(textRunProperties);
}
if (!rightToLeft)
{
// Fast loop early out for run with all non-complex characters
// which can be optimized by not going thru shaping engine.
int nominalLength;
if (textRunProperties.Typeface.CheckFastPathNominalGlyphs(
new CharacterBufferRange(characterBufferReference, length),
textRunProperties.FontRenderingEmSize,
(float)textRunProperties.PixelsPerDip,
1.0,
double.MaxValue, // widthMax
true, // keepAWord
digitCulture != null,
CultureMapper.GetSpecificCulture(textRunProperties.CultureInfo),
textFormattingMode,
isSideways,
false, //breakOnTabs
out nominalLength
) && length == nominalLength)
{
return(new TextShapeableCharacters[]
{
new TextShapeableCharacters(
new CharacterBufferRange(characterBufferReference, nominalLength),
textRunProperties,
textRunProperties.FontRenderingEmSize,
new MS.Internal.Text.TextInterface.ItemProps(),
null, // shapeTypeface (no shaping required)
false, // nullShape,
textFormattingMode,
isSideways
)
});
}
}
IList <TextShapeableSymbols> shapeables = new List <TextShapeableSymbols>(2);
glyphingCache.GetShapeableText(
textRunProperties.Typeface,
characterBufferReference,
length,
textRunProperties,
digitCulture,
isRightToLeftParagraph,
shapeables,
this as IShapeableTextCollector,
textFormattingMode
);
return(shapeables);
}
public TextCharacters(char[] characterArray, int offsetToFirstChar, int length, TextRunProperties textRunProperties)
{
}
public TextCharacters(string characterString, TextRunProperties textRunProperties)
{
}
public TextCharacters(string characterString, int offsetToFirstChar, int length, TextRunProperties textRunProperties)
{
}
unsafe public TextCharacters(char *unsafeCharacterString, int length, TextRunProperties textRunProperties)
{
}