// ------------------------------------------------------------------
//
// TextSource Implementation
//
// ------------------------------------------------------------------
#region TextSource Implementation
// ------------------------------------------------------------------
// Get a text run at specified text source position.
// ------------------------------------------------------------------
public override TextRun GetTextRun(int dcp)
{
Debug.Assert(dcp >= 0, "Character index must be non-negative.");
TextRun run;
// There is only one run of text.
if (dcp < _content.Length)
{
// LineLayout may ask for dcp != 0. This case may only happen during partial
// validation of TextRunCache.
// Example:
// 1) TextRunCache and LineMetrics array were created during measure process.
// 2) Before OnRender is called somebody invalidates render only property.
// This invalidates TextRunCache.
// 3) Before OnRender is called InputHitTest is invoked. Because LineMetrics
// array is valid, we don't have to recreate all lines. There is only
// need to recreate the N-th line (line that has been hit).
// During line recreation LineLayout will not refetch all runs from the
// beginning of TextBlock control - it will ask for the run at the beginning
// of the current line.
// For this reason set 'offsetToFirstChar' to 'dcp' value.
run = new TextCharacters(_content, dcp, _content.Length - dcp, _textProps);
}
else
{
run = new TextEndOfParagraph(_syntheticCharacterLength);
}
return(run);
}
private TextRun MakeTextCharactors(int index, int textSourceCharacterIndex, int length)
{
TextCharacters textCharacters = new TextCharacters(this.Text, textSourceCharacterIndex, length, this.JapaneseTextRunProperties);
this.UniscribeScriptShapeOpenType(this.Text, index, textSourceCharacterIndex, length);
return(textCharacters);
}
// Token: 0x06006607 RID: 26119 RVA: 0x001CB000 File Offset: 0x001C9200
private TextRun HandleElementStartEdge(StaticTextPointer position)
{
TextElement textElement = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
TextRun result;
if (textElement is LineBreak)
{
result = new TextEndOfLine(ComplexLine._elementEdgeCharacterLength * 2);
}
else if (textElement.IsEmpty)
{
TextRunProperties textRunProperties = new TextProperties(textElement, position, false, true, base.PixelsPerDip);
char[] array = new char[ComplexLine._elementEdgeCharacterLength * 2];
array[0] = '';
array[1] = '';
result = new TextCharacters(array, 0, array.Length, textRunProperties);
}
else
{
Inline inline = textElement as Inline;
if (inline == null)
{
result = new TextHidden(ComplexLine._elementEdgeCharacterLength);
}
else
{
DependencyObject parent = inline.Parent;
FlowDirection flowDirection = inline.FlowDirection;
FlowDirection flowDirection2 = flowDirection;
if (parent != null)
{
flowDirection2 = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (flowDirection != flowDirection2)
{
if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextSpanModifier(ComplexLine._elementEdgeCharacterLength, null, null, flowDirection);
}
else
{
result = new TextSpanModifier(ComplexLine._elementEdgeCharacterLength, textDecorations, inline.Foreground, flowDirection);
}
}
else if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextHidden(ComplexLine._elementEdgeCharacterLength);
}
else
{
result = new TextSpanModifier(ComplexLine._elementEdgeCharacterLength, textDecorations, inline.Foreground);
}
}
}
return(result);
}
internal override void BuildTextRun(IList <TextRun> textRuns)
{
var text = (Text ?? "").AsMemory();
var textRunProperties = CreateTextRunProperties();
var textCharacters = new TextCharacters(text, textRunProperties);
textRuns.Add(textCharacters);
}
internal override void BuildTextRun(IList <TextRun> textRuns)
{
var text = Environment.NewLine.AsMemory();
var textRunProperties = CreateTextRunProperties();
var textCharacters = new TextCharacters(text, textRunProperties);
textRuns.Add(textCharacters);
}
private FormattedTextSymbols GetFormattedTextSymbols(TextCharacters textRun, CharacterBufferRange chars, int bidiLevel)
{
return(new FormattedTextSymbols(
_fullText.Formatter.GlyphingCache,
textRun,
chars,
(bidiLevel & 1) == 1, //rightToLeft
TextFormatterImp.ToIdeal, // scalingFactor
(float)_fullText.TextStore.Settings.TextSource.PixelsPerDip,
_textFormattingMode,
false)); // isSideways
}
// Token: 0x0600666D RID: 26221 RVA: 0x001CC3BC File Offset: 0x001CA5BC
public override TextRun GetTextRun(int dcp)
{
TextRun textRun;
if (dcp < this._content.Length)
{
textRun = new TextCharacters(this._content, dcp, this._content.Length - dcp, this._textProps);
}
else
{
textRun = new TextEndOfParagraph(Line._syntheticCharacterLength);
}
if (textRun.Properties != null)
{
textRun.Properties.PixelsPerDip = base.PixelsPerDip;
}
return(textRun);
}
internal override void BuildTextRun(IList <TextRun> textRuns)
{
if (Inlines.HasComplexContent)
{
foreach (var inline in Inlines)
{
inline.BuildTextRun(textRuns);
}
}
else
{
if (Inlines.Text is string text)
{
var textRunProperties = CreateTextRunProperties();
var textCharacters = new TextCharacters(text.AsMemory(), textRunProperties);
textRuns.Add(textCharacters);
}
}
}
public override TextRun CreateTextRun(int startVisualColumn, ITextRunConstructionContext context)
{
var foreground = ThemeManager.Current.GetThemeColorBrush(ThemeColorStyle.DefaultForeground);
var background = ThemeManager.Current.GetThemeColorBrush(ThemeColorStyle.DefaultBackground);
TextRunProperties.SetBackgroundBrush(background);
TextRunProperties.SetForegroundBrush(foreground);
var spacesBuilder = new StringBuilder();
for (var i = 0; i < VisualLength - 1; i++)
{
spacesBuilder.Append(Symbols.Space);
}
spacesBuilder.Append(Symbols.VerticalBar);
var textCharacters = new TextCharacters(spacesBuilder.ToString(), TextRunProperties);
return(textCharacters);
}
public override TextRun GetTextRun(int textSourceCharacterIndex)
{
var index = textSourceCharacterIndex;
if (runs.ContainsKey(index))
{
var run = runs[index];
runs.Remove(index);
return(run);
}
if (index >= text.Length || text[index] == '\r' || text[index] == '\n')
{
if (index < text.Length && text[index] != '\r')
{
return(new TextCharacters(" ", null));
}
else
{
return(new TextEndOfParagraph(1));
}
}
int defaultTextLength, tokenLength;
TextTokenType tokenType;
if (!tokens.Find(index, out defaultTextLength, out tokenType, out tokenLength))
{
Debug.Fail("Could not find token info");
return(new TextCharacters(" ", null));
}
TextCharacters defaultRun = null, tokenRun = null;
if (defaultTextLength != 0)
{
var defaultText = text.Substring(index, defaultTextLength);
defaultRun = new TextCharacters(defaultText, new TextProps {
background = (Brush)parent.GetValue(TextElement.BackgroundProperty),
foreground = TextElement.GetForeground(parent),
typeface = new Typeface(
TextElement.GetFontFamily(parent),
TextElement.GetFontStyle(parent),
TextElement.GetFontWeight(parent),
TextElement.GetFontStretch(parent)
),
fontSize = TextElement.GetFontSize(parent),
});
}
index += defaultTextLength;
if (tokenLength != 0)
{
var hlColor = GetColor(tokenType);
var tokenText = text.Substring(index, tokenLength);
var textProps = new TextProps();
textProps.fontSize = TextElement.GetFontSize(parent);
if (hlColor.Foreground != null)
{
textProps.foreground = hlColor.Foreground.GetBrush(null);
}
else
{
textProps.foreground = TextElement.GetForeground(parent);
}
if (hlColor.Background != null)
{
textProps.background = hlColor.Background.GetBrush(null);
}
else
{
textProps.background = (Brush)parent.GetValue(TextElement.BackgroundProperty);
}
textProps.typeface = new Typeface(
TextElement.GetFontFamily(parent),
hlColor.FontStyle ?? TextElement.GetFontStyle(parent),
hlColor.FontWeight ?? TextElement.GetFontWeight(parent),
TextElement.GetFontStretch(parent)
);
tokenRun = new TextCharacters(tokenText, textProps);
}
Debug.Assert(defaultRun != null || tokenRun != null);
if ((defaultRun != null) ^ (tokenRun != null))
{
return(defaultRun ?? tokenRun);
}
else
{
runs[index] = tokenRun;
return(defaultRun);
}
}
// ------------------------------------------------------------------
// Fetch the next run at element open edge position.
//
// position - current position in the text array
// ------------------------------------------------------------------
private TextRun HandleElementStartEdge(StaticTextPointer position)
{
Debug.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
//
TextRun run = null;
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Cannot use ITextContainer that does not provide TextElement instances.");
if (element is LineBreak)
{
run = new TextEndOfLine(_elementEdgeCharacterLength * 2);
}
else if (element.IsEmpty)
{
// Empty TextElement should affect line metrics.
// TextFormatter does not support this feature right now, so as workaround
// TextRun with ZERO WIDTH SPACE is used.
TextRunProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */);
char[] textBuffer = new char[_elementEdgeCharacterLength * 2];
textBuffer[0] = (char)0x200B;
textBuffer[1] = (char)0x200B;
run = new TextCharacters(textBuffer, 0, textBuffer.Length, textProps);
}
else
{
Inline inline = element as Inline;
if (inline == null)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
DependencyObject parent = inline.Parent;
FlowDirection inlineFlowDirection = inline.FlowDirection;
FlowDirection parentFlowDirection = inlineFlowDirection;
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
TextDecorationCollection inlineTextDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (inlineFlowDirection != parentFlowDirection)
{
// Inline's flow direction is different from its parent. Need to create new TextSpanModifier with flow direction
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
null,
null,
inlineFlowDirection
);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground,
inlineFlowDirection
);
}
}
else
{
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground
);
}
}
}
}
return(run);
}
public override TextRun GetTextRun(int textSourceCharacterIndex)
{
var index = textSourceCharacterIndex;
if (runs.ContainsKey(index))
{
var run = runs[index];
runs.Remove(index);
return(run);
}
if (index >= text.Length)
{
return(new TextEndOfParagraph(1));
}
char c = text[index];
if (c == '\r' || c == '\n' || c == '\u0085' || c == '\u2028' || c == '\u2029')
{
int nlLen = c == '\r' && index + 1 < text.Length && text[index + 1] == '\n' ? 2 : 1;
return(new TextEndOfParagraph(nlLen));
}
int defaultTextLength, tokenLength;
object color;
if (!cachedTextColorsCollection.Find(index, out defaultTextLength, out color, out tokenLength))
{
Debug.Fail("Could not find token info");
return(new TextCharacters(" ", GetDefaultTextRunProperties()));
}
TextCharacters defaultRun = null, tokenRun = null;
if (defaultTextLength != 0)
{
var defaultText = text.Substring(index, defaultTextLength);
defaultRun = new TextCharacters(defaultText, GetDefaultTextRunProperties());
}
index += defaultTextLength;
if (tokenLength != 0)
{
var tc = GetTextColor(themeManager.Theme, color);
var tokenText = text.Substring(index, tokenLength);
var textProps = new TextProps();
textProps.fontSize = TextElement.GetFontSize(parent);
textProps.foreground = tc.Foreground ?? TextElement.GetForeground(parent);
textProps.background = tc.Background ?? (Brush)parent.GetValue(TextElement.BackgroundProperty);
textProps.typeface = new Typeface(
TextElement.GetFontFamily(parent),
tc.FontStyle ?? TextElement.GetFontStyle(parent),
tc.FontWeight ?? TextElement.GetFontWeight(parent),
TextElement.GetFontStretch(parent)
);
tokenRun = new TextCharacters(tokenText.Length == 0 ? " " : tokenText, textProps);
}
Debug.Assert(defaultRun != null || tokenRun != null);
if ((defaultRun != null) ^ (tokenRun != null))
{
return(defaultRun ?? tokenRun);
}
else
{
runs[index] = tokenRun;
return(defaultRun);
}
}
/// <summary>
/// Return next TextRun at element edge start position
/// </summary>
/// <param name="position">
/// Current position in text array
/// </param>
protected TextRun HandleElementStartEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
// In the future, handle visibility collapsed.
TextRun run = null;
TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Debug.Assert(element != null, "Cannot use ITextContainer that does not provide TextElement instances.");
Invariant.Assert(!(element is Block), "We do not expect any Blocks inside Paragraphs");
// Treat figure and floaters as special hidden runs.
if (element is Figure || element is Floater)
{
// Get the length of the element
int cch = TextContainerHelper.GetElementLength(_paraClient.Paragraph.StructuralCache.TextContainer, element);
// Create special hidden run.
run = new FloatingRun(cch, element is Figure);
if (element is Figure)
{
_hasFigures = true;
}
else
{
_hasFloaters = true;
}
}
else if (element is LineBreak)
{
int cch = TextContainerHelper.GetElementLength(_paraClient.Paragraph.StructuralCache.TextContainer, element);
run = new LineBreakRun(cch, PTS.FSFLRES.fsflrSoftBreak);
}
else if (element.IsEmpty)
{
// Empty TextElement should affect line metrics.
// TextFormatter does not support this feature right now, so as workaround
// TextRun with ZERO WIDTH SPACE is used.
TextProperties textProps = new TextProperties(element, position, false /* inline objects */, true /* get background */,
_paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
char[] textBuffer = new char[_elementEdgeCharacterLength * 2];
// Assert that _elementEdgeCharacterLength is 1 before we use hard-coded indices
Invariant.Assert(_elementEdgeCharacterLength == 1, "Expected value of _elementEdgeCharacterLength is 1");
textBuffer[0] = (char)0x200B;
textBuffer[1] = (char)0x200B;
run = new TextCharacters(textBuffer, 0, textBuffer.Length, textProps);
}
else
{
Inline inline = (Inline)element;
DependencyObject parent = inline.Parent;
FlowDirection inlineFlowDirection = inline.FlowDirection;
FlowDirection parentFlowDirection = inlineFlowDirection;
TextDecorationCollection inlineTextDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (inlineFlowDirection != parentFlowDirection)
{
// Inline's flow direction is different from its parent. Need to create new TextSpanModifier with flow direction
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
null,
null,
inlineFlowDirection
);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground,
inlineFlowDirection
);
}
}
else
{
if (inlineTextDecorations == null || inlineTextDecorations.Count == 0)
{
run = new TextHidden(_elementEdgeCharacterLength);
}
else
{
run = new TextSpanModifier(
_elementEdgeCharacterLength,
inlineTextDecorations,
inline.Foreground
);
}
}
}
return(run);
}
// Token: 0x0600688E RID: 26766 RVA: 0x001D7E38 File Offset: 0x001D6038
protected TextRun HandleElementStartEdge(StaticTextPointer position)
{
Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementStart, "TextPointer does not point to element start edge.");
TextElement textElement = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
Invariant.Assert(!(textElement is Block), "We do not expect any Blocks inside Paragraphs");
TextRun result;
if (textElement is Figure || textElement is Floater)
{
int elementLength = TextContainerHelper.GetElementLength(this._paraClient.Paragraph.StructuralCache.TextContainer, textElement);
result = new FloatingRun(elementLength, textElement is Figure);
if (textElement is Figure)
{
this._hasFigures = true;
}
else
{
this._hasFloaters = true;
}
}
else if (textElement is LineBreak)
{
int elementLength2 = TextContainerHelper.GetElementLength(this._paraClient.Paragraph.StructuralCache.TextContainer, textElement);
result = new LineBreakRun(elementLength2, PTS.FSFLRES.fsflrSoftBreak);
}
else if (textElement.IsEmpty)
{
TextProperties textRunProperties = new TextProperties(textElement, position, false, true, this._paraClient.Paragraph.StructuralCache.TextFormatterHost.PixelsPerDip);
char[] array = new char[LineBase._elementEdgeCharacterLength * 2];
Invariant.Assert(LineBase._elementEdgeCharacterLength == 1, "Expected value of _elementEdgeCharacterLength is 1");
array[0] = '';
array[1] = '';
result = new TextCharacters(array, 0, array.Length, textRunProperties);
}
else
{
Inline inline = (Inline)textElement;
DependencyObject parent = inline.Parent;
FlowDirection flowDirection = inline.FlowDirection;
FlowDirection flowDirection2 = flowDirection;
TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
if (parent != null)
{
flowDirection2 = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
if (flowDirection != flowDirection2)
{
if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextSpanModifier(LineBase._elementEdgeCharacterLength, null, null, flowDirection);
}
else
{
result = new TextSpanModifier(LineBase._elementEdgeCharacterLength, textDecorations, inline.Foreground, flowDirection);
}
}
else if (textDecorations == null || textDecorations.Count == 0)
{
result = new TextHidden(LineBase._elementEdgeCharacterLength);
}
else
{
result = new TextSpanModifier(LineBase._elementEdgeCharacterLength, textDecorations, inline.Foreground);
}
}
return(result);
}
