高分辨率（MS Surface）上的错误Swing UI缩放

问题描述

我目前正在开发一个涉及Swing GUI的小型Java应用程序。在我的开发PC上，一切看起来都不错，但是当我在MS Surface上运行它时，某些图标似乎对于组件而言太大（或者组件对于图标而言太小）。

I'm currently working on a little Java application, that involves Swing GUIs. On my development PC everything looks fine but when I run it on my MS Surface, some icons seem to be too large for the components (or the components too small for the icons).

这就是我的意思：

Google研究让我得出结论，这是由于Surface的高分辨率和Win8的缩放让一些项目显得更大。所以我将缩放重置为100％，它实际上修复了不良缩放。

Google research has lead me to conclude that this is due to Surface's high resolution and Win8's zooming to let some items appear a little larger. So I reset that zoom to 100% and it actually fixed the bad scaling.

不幸的是，这并没有真正解决我的问题。没有变焦，一切都太小了，所以我宁愿不禁用它。但有没有聪明的方法来解决这个问题？我可以只缩放我的程序或Java的图标吗？理想情况下，我甚至想要升级整个帧，因为一切都很小。

Unfortunately, this doesn't really fix my problem. Everything is far too small without the zoom, so I'd rather not disable it. But is there any clever way to solve this? Can I just "unscale" my program's or Java's icons? Ideally, I would even like upscale the entire frame, because everything is rather small.

编辑：很明显，我也试过调整实际的JFrame，但它没有对对话框大小的影响。我正在调用对话框

obviously, I've also tried just resizing the actual JFrame but it has no effect on the dialog size. I'm calling the dialog by

JOptionPane.showMessageDialog(frame, msg, "Information", JOptionPane.INFORMATION_MESSAGE);

推荐答案

这是一个讨厌的，黑客的，快速修复的解决方案，它可以通过将Swing自己的图标大小调整为80％来阻止令人讨厌的裁剪。

Here is a nasty, hacky, quick-fix solution which will stop the nasty cropping by resizing Swing's own icons to 80%.

In main ，添加：

String[] iconOpts = {"OptionPane.errorIcon", 
  "OptionPane.informationIcon", 
  "OptionPane.warningIcon", 
  "OptionPane.questionIcon"};
for (String key : iconOpts) {
  ImageIcon icon = (ImageIcon) UIManager.get(key);
  Image img = icon.getImage();
  BufferedImage bi = new BufferedImage(
          img.getWidth(null), img.getHeight(null), 
          BufferedImage.TYPE_INT_ARGB);
  java.awt.Graphics g = bi.createGraphics();
  g.drawImage(img, 0, 0, 
          (int) (img.getWidth(null) * 0.8), 
          (int) (img.getHeight(null) * 0.8), null);
  ImageIcon newIcon = new ImageIcon(bi);
  UIManager.put(key, newIcon);
}

您可能需要先检查是否确实需要这样做 - Windows 8/10默认为125％，但有些人会将其切换回100％。我没有找到一种优雅的方法来做到这一点，但是这些方面的内容会给你一个想法：

You might want to first check whether this is actually required - Windows 8/10 defaults to 125% but some people will switch it back to 100%. I haven't found an elegant way to do this, but something along these lines will give you an idea:

java.awt.Font font = (java.awt.Font) UIManager.get("Label.font");
if (font.getSize() != 11) {
    //resize icons in here
}

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