コード例 #1
0
ファイル: linebase.cs プロジェクト: JianwenSun/cc
        /// <summary>
        /// Fetch the next run at element end edge position.
        /// ElementEndEdge; we can have 2 possibilities:
        /// (1) Close edge of element associated with the text paragraph,
        ///     create synthetic LineBreak run to end the current line.
        /// (2) End of inline element, hide CloseEdge character and continue
        /// </summary>
        /// <param name="position"></param>
        /// Position in current text array
        protected TextRun HandleElementEndEdge(StaticTextPointer position)
        {
            Invariant.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd, "TextPointer does not point to element end edge.");

            TextRun run;
            if (position.Parent == _paraClient.Paragraph.Element)
            {
                // (1) Close edge of element associated with the text paragraph,
                //     create synthetic LineBreak run to end the current line.
                run = new ParagraphBreakRun(_syntheticCharacterLength, PTS.FSFLRES.fsflrEndOfParagraph);
            }
            else
            {
                TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
                Debug.Assert(element != null, "Element should be here.");
                Inline inline = (Inline) element;
                DependencyObject parent = inline.Parent;
                FlowDirection parentFlowDirection = inline.FlowDirection;

                if(parent != null)
                {
                    parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
                }

                if (inline.FlowDirection != parentFlowDirection)
                {
                    run = new TextEndOfSegment(_elementEdgeCharacterLength);
                }
                else
                {
                    TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
                    if (textDecorations == null || textDecorations.Count == 0)
                    {
                        // (2) End of inline element, hide CloseEdge character and continue
                        run = new TextHidden(_elementEdgeCharacterLength);
                    }
                    else
                    {
                        run = new TextEndOfSegment(_elementEdgeCharacterLength);
                    }
                }
            }
            return run;
        }
コード例 #2
0
ファイル: ComplexLine.cs プロジェクト: sjyanxin/WPFSource
        // -----------------------------------------------------------------
        // Fetch the next run at element close edge position.
        //
        //      position - current position in the text array 
        // ------------------------------------------------------------------
        private TextRun HandleElementEndEdge(StaticTextPointer position) 
        { 
            Debug.Assert(position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd, "TextPointer does not point to element end edge.");
 
            TextRun run = null;

            TextElement element = (TextElement)position.GetAdjacentElement(LogicalDirection.Forward);
            Debug.Assert(element != null, "Element should be here."); 
            Inline inline = element as Inline;
            if (inline == null) 
            { 
                run = new TextHidden(_elementEdgeCharacterLength);
            } 
            else
            {
                DependencyObject parent = inline.Parent;
                FlowDirection parentFlowDirection = inline.FlowDirection; 

                if(parent != null) 
                { 
                    parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
                } 

                if (inline.FlowDirection != parentFlowDirection)
                {
                    run = new TextEndOfSegment(_elementEdgeCharacterLength); 
                }
                else 
                { 
                    TextDecorationCollection textDecorations = DynamicPropertyReader.GetTextDecorations(inline);
                    if (textDecorations == null || textDecorations.Count == 0) 
                    {
                        // (2) End of inline element, hide CloseEdge character and continue
                        run = new TextHidden(_elementEdgeCharacterLength);
                    } 
                    else
                    { 
                        run = new TextEndOfSegment(_elementEdgeCharacterLength); 
                    }
                } 
            }
            return run;
        }