// 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);
        }
Example #2
0
        /// <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.");

            // 

            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 */);

                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;
        }
Example #3
0
        // ------------------------------------------------------------------
        // 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; 
        }
Example #4
0
        // ------------------------------------------------------------------
        // 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);
        }