优化图纸审核备注的图片上传；

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2024-09-04 d7be195b0e1949c7b38bce2ad83ae974cbfac094

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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Documents;
using System.Windows.Media;
 
namespace PdmSwPlugin.UI
{
    public static class FlowDocumentExtensions
    {
        private static IEnumerable<TextElement> GetRunsAndParagraphs(FlowDocument doc)
        {
            for (TextPointer position = doc.ContentStart;
              position != null && position.CompareTo(doc.ContentEnd) <= 0;
              position = position.GetNextContextPosition(LogicalDirection.Forward))
            {
                if (position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.ElementEnd)
                {
                    Run run = position.Parent as Run;
 
                    if (run != null)
                    {
                        yield return run;
                    }
                    else
                    {
                        Paragraph para = position.Parent as Paragraph;
 
                        if (para != null)
                        {
                            yield return para;
                        }
                    }
                }
            }
        }
 
        public static FormattedText GetFormattedText(this FlowDocument doc)
        {
            if (doc == null)
            {
                throw new ArgumentNullException("doc");
            }
            //doc.PagePadding = new System.Windows.Thickness(0, 0, 0, 0);//设置文本的边距
            FormattedText output = new FormattedText(
              GetText(doc),
              CultureInfo.CurrentCulture,
              doc.FlowDirection,
              new Typeface(doc.FontFamily, doc.FontStyle, doc.FontWeight, doc.FontStretch),
              doc.FontSize,
              doc.Foreground);
 
            int offset = 0;
 
            foreach (TextElement el in GetRunsAndParagraphs(doc))
            {
                Run run = el as Run;
 
                if (run != null)
                {
                    int count = run.Text.Length;
 
                    output.SetFontFamily(run.FontFamily, offset, count);
                    output.SetFontStyle(run.FontStyle, offset, count);
                    output.SetFontWeight(run.FontWeight, offset, count);
                    output.SetFontSize(run.FontSize, offset, count);
                    output.SetForegroundBrush(run.Foreground, offset, count);
                    output.SetFontStretch(run.FontStretch, offset, count);
                    output.SetTextDecorations(run.TextDecorations, offset, count);
 
                    offset += count;
                }
                else
                {
                    offset += Environment.NewLine.Length;
                }
            }
 
            return output;
        }
 
        private static string GetText(FlowDocument doc)
        {
            StringBuilder sb = new StringBuilder();
 
            foreach (TextElement el in GetRunsAndParagraphs(doc))
            {
                Run run = el as Run;
                sb.Append(run == null ? Environment.NewLine : run.Text);
            }
            return sb.ToString();
        }
    }
 
}