QTextEdit：如何修改粘贴到编辑器中的文本？

1 回答

• 2

  感谢LogicStuff的评论，我能够通过创建一个从QTextEdit派生的新类来自己解决这个问题 .

  editor.hpp：

  #pragma once
  #include <QTextEdit>
  
  class Editor : public QTextEdit
  {
      Q_OBJECT
  
  public:
      Editor(QWidget * parent) : QTextEdit(parent) {}
  
      void insertFromMimeData(const QMimeData * source) override;
  
  private:
      static const int TAB_SPACES = 4;
  };
  

  editor.cpp：

  #include "editor.hpp"
  #include <QMimeData>
  
  void Editor::insertFromMimeData(const QMimeData * source)
  {
      if (source->hasText())
      {
          QString text = source->text();
          QTextCursor cursor = textCursor();
  
          for (int x = 0, pos = cursor.positionInBlock(); x < text.size(); x++, pos++)
          {
              if (text[x] == '\t')
              {
                  text[x] = ' ';
                  for (int spaces = TAB_SPACES - (pos % TAB_SPACES) - 1; spaces > 0; spaces--)
                      text.insert(x, ' ');
              }
              else if (text[x] == '\n')
              {
                  pos = -1;
              }
          }
          cursor.insertText(text);
      }
  }
  

  回复于 2024-05-03T17:25:10+08:00