滚动浏览 JScrollPane 中保存的 JLabel
我有一个 JScrollPane，它使用以下代码保存 JLabel：
//Create TEXT LOG JPanel textLogPane = new JScrollPane(logLabel); textLogPane.setPreferredSize(textLogPaneDim); //textLogPane.setOpaque(true); textLogPane.setBorder(BorderFactory.createLineBorder(Color.BLACK)); textLogPane.getViewport().setBackground(Color.DARK_GRAY);
JLabel logLabel 由使用
进行回车的 HTML 编码的字符串表示。我根据某些行的内容显示某些图像，并且我希望能够滚动 JScrollPane、textLogPane，以便在显示该图形时显示该行。我知道我想要显示的行的内容，但我似乎无法弄清楚如何让它向下（或向上）滚动到相关行。
如果需要，我可以更改为 JLabel 以外的其他内容，只要我可以保留 HTML 编码并使其看起来像多行文本。
抱歉，如果这是重复的，我尝试搜索但找不到任何结果。
谢谢
I have a JScrollPane that holds a JLabel using the following code:
//Create TEXT LOG JPanel
textLogPane = new JScrollPane(logLabel);
textLogPane.setPreferredSize(textLogPaneDim);
//textLogPane.setOpaque(true);
textLogPane.setBorder(BorderFactory.createLineBorder(Color.BLACK));
textLogPane.getViewport().setBackground(Color.DARK_GRAY);
The JLabel, logLabel, is represented by a string with an HTML encoding using
for carriage returns. I display certain images based on the contents of certain lines and I would like to be able to scroll the JScrollPane, textLogPane, to show that line whenever I am displaying that graphic. I know the contents of the line that I want to display but I can't seem to figure out how to get it to scroll down(or up) to the relevant line.
If need be I can change to something other than a JLabel as long as I can keep the HTML encoding and have it look just like multiple lines of text.
Sorry if this is a repeat I tried searching but couldn't find any results.
Thanks
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您可以进行一些自定义数学运算并使用 scrollRectToVisible() 。我不知道如何计算 JLabel 中特定行的矩形。更好的解决方案是将字符串粘贴到 JList 中，也许使用 html 的自定义渲染器，然后使用
You can do some custom maths and use scrollRectToVisible() in your viewport. I don't know how to compute the rect of a specific line in your JLabel. A better solution would be to stick your strings into a JList instead, perhaps with a custom renderer for the html, and use
HTML 中不使用“回车符”，而是使用“br”标签。
我建议您应该使用 JTextPane 来显示多行文本。我还发现不使用 HTML，而是添加带有属性的字符串会更容易。您还可以将图标插入到 JTextPane 中。
阅读 Swing 教程中有关使用文本组件 一个工作示例。
You don't use "carriage returns" in HTML, you use "br" tags.
I would suggest you should probably be using a JTextPane for multiline text. I also find it easier to not use HTML, but instead to add strings with attributes. You can also insert icons into a JTextPane.
Read the section from the Swing tutorial on Using Text Components for a working example.