using Microsoft.Win32;
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using System;
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using System.IO;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Markup;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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namespace PdmSwPlugin.UI
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{
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/// <summary>
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/// UserControl1.xaml 的交互逻辑
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/// </summary>
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public partial class CustomRichBox : UserControl
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{
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public CustomRichBox()
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{
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InitializeComponent();
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}
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private void Color_SelectionChanged(object sender, SelectionChangedEventArgs e)
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{
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if (sender == null)
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{
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return;
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}
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var item = sender as ComboBox;
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var buttonType = item.Name == "combBackground" ? "Background" : "Foreground";
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if (item != null)
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{
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var color = (item.SelectedItem as ComboBoxItem).Background;
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SetColor(buttonType, color);
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}
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}
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private void FontSize_SelectionChanged(object sender, SelectionChangedEventArgs e)
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{
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if (sender == null)
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{
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return;
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}
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var item = sender as ComboBox;
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if (item != null)
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{
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string sizeStr = (item.SelectedItem as ComboBoxItem).Content.ToString();
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try
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{
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double size = double.Parse(sizeStr);
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var textSelection = this.richTextBox?.Selection;
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if (textSelection == null) return;
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textSelection.ApplyPropertyValue(TextElement.FontSizeProperty, size);
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}
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catch
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{
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}
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}
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}
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private void SetColor(string buttonType, Brush brush)
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{
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var textSelection = this.richTextBox.Selection;
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if (textSelection == null)
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{
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return;
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}
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if (buttonType == "Background")
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{
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var propertyValue = textSelection.GetPropertyValue(TextElement.BackgroundProperty);
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var bgBrush = (Brush)propertyValue;
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if (bgBrush == brush)
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{
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textSelection.ApplyPropertyValue(TextElement.BackgroundProperty, Colors.White);
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}
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else
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{
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textSelection.ApplyPropertyValue(TextElement.BackgroundProperty, brush);
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}
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}
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if (buttonType == "Foreground")
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{
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var propertyValue = textSelection.GetPropertyValue(TextElement.ForegroundProperty);
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var foreground = (Brush)propertyValue;
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if (foreground == brush)
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{
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textSelection.ApplyPropertyValue(TextElement.ForegroundProperty, Colors.Black);
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}
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else
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{
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textSelection.ApplyPropertyValue(TextElement.ForegroundProperty, brush);
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}
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}
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richTextBox.Focus();
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}
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private void Setting_Click(object sender, System.Windows.RoutedEventArgs e)
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{
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var textSelection = this.richTextBox.Selection;
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Button button = sender as Button;
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if (button == null) return;
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string buttonType = button.Tag.ToString();
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if (buttonType == "StrikeLine")
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{
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var propertyValue = textSelection.GetPropertyValue(Inline.TextDecorationsProperty);
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var textDecorationCollection = (TextDecorationCollection)propertyValue;
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if (textDecorationCollection == TextDecorations.Strikethrough)
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{
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textSelection.ApplyPropertyValue(Inline.TextDecorationsProperty, null);
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}
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else
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{
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textSelection.ApplyPropertyValue(Inline.TextDecorationsProperty, TextDecorations.Strikethrough);
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}
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}
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else if (buttonType == "Super")
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{
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var propertyValue = textSelection.GetPropertyValue(Inline.BaselineAlignmentProperty);
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var supper = (BaselineAlignment)propertyValue;
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if (supper == BaselineAlignment.Superscript)
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{
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textSelection.ApplyPropertyValue(Inline.BaselineAlignmentProperty, BaselineAlignment.Top);
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}
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else
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{
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textSelection.ApplyPropertyValue(Inline.BaselineAlignmentProperty, BaselineAlignment.Superscript);
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}
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}
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else if (buttonType == "Sub")
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{
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var propertyValue = textSelection.GetPropertyValue(Inline.BaselineAlignmentProperty);
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var sub = (BaselineAlignment)propertyValue;
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if (sub == BaselineAlignment.Subscript)
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{
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textSelection.ApplyPropertyValue(Inline.BaselineAlignmentProperty, BaselineAlignment.Top);
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}
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else
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{
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textSelection.ApplyPropertyValue(Inline.BaselineAlignmentProperty, BaselineAlignment.Subscript);
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}
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}
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else if (buttonType == "fontSize")
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{
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}
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else if (buttonType == "Image")
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{
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OpenFileDialog openFileDialog = new OpenFileDialog();
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openFileDialog.Title = "请选择需要插入的图片";
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openFileDialog.Filter = "图片文件|*.png";
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bool? flag = openFileDialog.ShowDialog();
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if (flag == true)
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{
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try
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{
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var fileName = openFileDialog.FileName;
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var imgSource = new BitmapImage(new Uri(fileName));
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InsertPicToRichBox(imgSource);
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/*double imgWidth = imgSource.Width, imgHeight = imgSource.Height;
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if (imgWidth > richTextBox.ActualWidth)
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{
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double rate = Math.Floor(richTextBox.ActualWidth / imgWidth);
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imgWidth = imgWidth * rate;
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imgHeight = imgHeight * rate;
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}
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var img = new Image() { Source = imgSource, Stretch = Stretch.Uniform, Width = this.richTextBox.ActualWidth - 50 };
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var imgContainer = new BlockUIContainer(img);
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this.richTextBox.CaretPosition.InsertParagraphBreak();
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this.richTextBox.Document.Blocks.InsertAfter(this.richTextBox.CaretPosition.Paragraph, imgContainer);*/
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}
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catch (Exception ex)
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{
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MessageBox.Show("不支持的图片格式");
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}
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}
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}
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else if (buttonType == "Print")
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{
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PrintDialog pd = new PrintDialog();
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if ((pd.ShowDialog() == true))
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{
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//use either one of the below
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pd.PrintVisual(this.richTextBox as Visual, "打印富文本1");
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pd.PrintDocument((((IDocumentPaginatorSource)this.richTextBox.Document).DocumentPaginator), "打印富文本2");
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}
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}
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richTextBox.Focus();
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}
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private string ImageToBase64(BitmapSource image)
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{
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JpegBitmapEncoder encoder = new JpegBitmapEncoder(); // 使用JPEG编码
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encoder.Frames.Add(BitmapFrame.Create(image));
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using (MemoryStream ms = new MemoryStream())
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{
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encoder.Save(ms);
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byte[] imageBytes = ms.ToArray();
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return Convert.ToBase64String(imageBytes); // 将字节数组转换为Base64字符串
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}
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}
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public byte[] GetBlob()
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{
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var range = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
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using (MemoryStream memoryStream = new MemoryStream())
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{
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range.Save(memoryStream, DataFormats.XamlPackage);
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return memoryStream.ToArray();
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}
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}
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public string GetContent()
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{
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FlowDocument flowDoc = richTextBox.Document;
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// 遍历文档中的所有Block
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foreach (Block block in flowDoc.Blocks)
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{
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if (block is Paragraph)
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{
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Paragraph paragraph = block as Paragraph;
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foreach (Inline inline in paragraph.Inlines)
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{
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if (inline is InlineUIContainer)
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{
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InlineUIContainer uiContainer = inline as InlineUIContainer;
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if (uiContainer.Child is Image)
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{
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Image image = uiContainer.Child as Image;
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BitmapSource bitmapSource = image.Source as BitmapSource;
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string base64 = ImageToBase64(bitmapSource);
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string imgXaml = $"<Image Source=\"data:image/jpg;base64,{base64}\" />";
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// 替换原有的Image对象
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uiContainer.Child = new Image() { Source = new BitmapImage(new Uri(imgXaml)) };
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}
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}
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}
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}
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}
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using (MemoryStream memoryStream = new MemoryStream())
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{
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XamlWriter.Save(flowDoc, memoryStream);
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memoryStream.Seek(0, SeekOrigin.Begin);
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using (StreamReader reader = new StreamReader(memoryStream))
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{
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return reader.ReadToEnd();
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}
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}
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}
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private void UserControl_Loaded(object sender, RoutedEventArgs e)
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{
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fontSizeComb.SelectedIndex = 0;
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combBackground.SelectedIndex = 0;
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combForeground.SelectedIndex = 0;
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}
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public void LoadFromBlob(byte[] blob)
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{
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if (blob == null || blob.Length <= 0)
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{
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return;
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}
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var range = new TextRange(this.richTextBox.Document.ContentStart, this.richTextBox.Document.ContentEnd);
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using (var ss = new MemoryStream(blob))
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{
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range.Load(ss, DataFormats.XamlPackage);
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}
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}
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private void InsertPicToRichBox(BitmapSource img)
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{
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bool DisableEdit = DProperty.GetDisableEdit(this);
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if (DisableEdit) return;
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try
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{
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double picMaxWidth = DProperty.GetPicMaxWidth(this);
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double width = img.PixelWidth;
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if (picMaxWidth > 0 && width > picMaxWidth)
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{
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width = picMaxWidth;
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}
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/// 行内插入图片
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var insertImg = new Image() { Source = img, Stretch = Stretch.Uniform, Width = width };
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var imgContainer = new InlineUIContainer(insertImg);
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TextPointer pointer = richTextBox.CaretPosition;
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pointer.Paragraph.Inlines.Add(imgContainer);
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/// 下面注释的这段是直接插入新段落的写法
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//var imgContainer = new BlockUIContainer(insertImg);
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//this.richTextBox.CaretPosition.InsertParagraphBreak();
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//this.richTextBox.Document.Blocks.InsertAfter(this.richTextBox.CaretPosition.Paragraph, imgContainer);
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}
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catch (Exception e)
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{
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}
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}
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public void ChangeStatus(bool DisableEdit)
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{
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if (DisableEdit)
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{
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toolBar.Visibility = Visibility.Collapsed;
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richTextBox.IsReadOnly = true;
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richTextBox.BorderThickness = new Thickness(0);
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}
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else
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{
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toolBar.Visibility = Visibility.Visible;
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richTextBox.IsReadOnly = false;
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richTextBox.BorderThickness = new Thickness(1);
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}
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}
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/// <summary>
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/// 富文本 Ctrl+V 事件
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void UserControl_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
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{
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if (e.KeyboardDevice.Modifiers == ModifierKeys.Control && e.Key == Key.V)
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{
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if (Clipboard.ContainsImage())
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{
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var img = Clipboard.GetImage();
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InsertPicToRichBox(img);
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e.Handled = true;
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}
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}
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}
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/// <summary>
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/// 复制菜单
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void Copy_Click(object sender, RoutedEventArgs e)
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{
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richTextBox.Copy();
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}
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/// <summary>
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/// 粘贴菜单
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void Paste_Click(object sender, RoutedEventArgs e)
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{
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try
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{
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if (DProperty.GetDisableEdit(this) == true)
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{
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return;
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}
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if (Clipboard.ContainsImage())
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{
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var img = Clipboard.GetImage();
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InsertPicToRichBox(img);
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}
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else
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{
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richTextBox.Paste();
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}
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}
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catch (Exception ex)
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{
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}
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}
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}
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}
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