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C# StaticTextPointer.GetNextContextPosition方法代碼示例

本文整理匯總了C#中System.Windows.Documents.StaticTextPointer.GetNextContextPosition方法的典型用法代碼示例。如果您正苦於以下問題:C# StaticTextPointer.GetNextContextPosition方法的具體用法?C# StaticTextPointer.GetNextContextPosition怎麽用?C# StaticTextPointer.GetNextContextPosition使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在System.Windows.Documents.StaticTextPointer的用法示例。


在下文中一共展示了StaticTextPointer.GetNextContextPosition方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的C#代碼示例。

示例1: GetNextPropertyChangePosition

        /// <summary>
        /// Returns the closest neighboring TextPointer in an indicated
        /// direction where a property value calculated from an embedded
        /// object, scoping text element, or scoping highlight could
        /// change.
        /// </summary>
        /// <param name="textPosition">
        /// Position to query.
        /// </param>
        /// <param name="direction">
        /// Direction of content to query.
        /// </param>
        /// <returns>
        /// If the following symbol is TextPointerContext.EmbeddedElement,
        /// TextPointerContext.ElementBegin, or TextPointerContext.ElementEnd, returns
        /// a TextPointer exactly one symbol distant.
        ///
        /// If the following symbol is TextPointerContext.Text, the distance
        /// of the returned TextPointer is the minimum of the value returned
        /// by textPosition.GetTextLength and the distance to any highlight
        /// start or end edge.
        ///
        /// If the following symbol is TextPointerContext.None, returns null.
        /// </returns>
        internal virtual StaticTextPointer GetNextPropertyChangePosition(StaticTextPointer textPosition, LogicalDirection direction)
        {
            StaticTextPointer changePosition;
            StaticTextPointer characterRunEndPosition;

            switch (textPosition.GetPointerContext(direction))
            {
                case TextPointerContext.None:
                    changePosition = StaticTextPointer.Null;
                    break;

                case TextPointerContext.Text:
                    changePosition = GetNextHighlightChangePosition(textPosition, direction);
                    characterRunEndPosition = textPosition.GetNextContextPosition(LogicalDirection.Forward);

                    if (changePosition.IsNull ||
                        characterRunEndPosition.CompareTo(changePosition) < 0)
                    {
                        changePosition = characterRunEndPosition;
                    }

                    break;

                case TextPointerContext.EmbeddedElement:
                case TextPointerContext.ElementStart:
                case TextPointerContext.ElementEnd:
                default:
                    changePosition = textPosition.CreatePointer(+1);
                    break;
            }

            return changePosition;
        }
開發者ID:nlh774,項目名稱:DotNetReferenceSource,代碼行數:57,代碼來源:Highlights.cs


注:本文中的System.Windows.Documents.StaticTextPointer.GetNextContextPosition方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。