Qt 显示非常大的富文本的最佳方式？
我需要显示非常大的日志，该日志使用 HTML 标签来标记不同类型的数据。
使用 QTextEdit 和 QTextBrowser 确实会减慢应用程序的速度，尤其是在附加操作上。我真的很想保留 QTextEdit 界面和功能。
我见过有人实现了自己风格的 TextEdit 来提高性能，但我想知道是否有人使用“Qt”工具解决了这个问题。我考虑过使用模型/视图框架来按需加载数据，但这并不完全符合我的预期。
也许子类化 QTextEdit 并覆盖它的一些滚动槽...
如果有人遇到这个问题并解决它，我将不胜感激一些提示。
谢谢。
I need to display very large logs that uses HTML tags for marking different types of data.
Using QTextEdit and QTextBrowser really slows the application, especially on append operations. I would really like to keep the QTextEdit interface and abilities.
I've seen people that implemented their own flavor of TextEdit to improve performance, but I wandered if anyone solved this issue using "Qt" tools. I thought about using the Model/View framework to load data on demand but it is not quite what it was intended for I think.
Maybe subclassing QTextEdit and override some of its slots for scrolling...
If anyone encountered this issue and solved it, I would appreciate some tips.
Thanks.
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使用
QPlainTextEdit来处理大型日志文件——这就是它的设计目的。您无法获得QTextEdit提供的全部选项，但您可以设置字体和文本颜色。Use
QPlainTextEditfor large log files -- that's what it was designed for. You don't get the full range of options thatQTextEditprovides, but you can set the font and the text colour.由于您的日志在某种程度上可能是表格形式的，因此模型/视图框架听起来适合您。也许您可以尝试使用
QListView和 QGraphicsTextItem ，它有设置/获取 HTML 的方法：你会从写作中得到一些好处和麻烦就这样，但您当然应该能够巧妙地插入和追加速度。
Since your log is presumably tabular at some level, then the Model/View framework sounds like it could work for you. Perhaps you could try using a
QListViewwith QGraphicsTextItem, It has methods for setting/getting HTML:You'll get some benefits and hassles from writing it that way, but you should certainly be able to finesse the insertions and append speed.
为什么不使用QWebKit？模块本身比较重，但是渲染速度非常好。
why not using
QWebKit? Module itself is rather heavy, but rendering speed is very good.由于使用模型/视图架构重新实现 QTextEdit 的投资回报率较低，因此我将同意 @spraff 关于使用分页的评论。
基本上我会限制日志中保留的行数，因为日志也会转储到文件中，如果用户需要过去或将来的某些内容（通过添加特殊按钮），我将从文件中动态读取它（轻量级模型/视图......）。
Since the ROI on re-implementing QTextEdit with the Model/View architecture is low, I will go with @spraff comment on using paging.
Basically I will limit the number of lines I keep in my log, since the log is also dumped into a file, if the user will require something from the past or future (by adding special buttons), I will read it from the file dynamically (lightweight model/view....).