如何在 JavaFX 中监听 Stage 的调整大小事件？
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How to listen resize event of Stage in JavaFX?
提问by Amita Patil
I want to perform some functionality on resize event of form (or Sceneor Stagewhatever it is).
我想对表单（Scene或Stage其他任何内容）的调整大小事件执行一些功能。
But how can I detect resize event of form in JavaFX?
但是如何在 JavaFX 中检测表单的调整大小事件？
采纳答案by DVarga
You can listen to the changes of the widthPropertyand the heightPropertyof the Stage:
你可以听的变化widthProperty及heightProperty的Stage：
stage.widthProperty().addListener((obs, oldVal, newVal) -> {
// Do whatever you want
});
stage.heightProperty().addListener((obs, oldVal, newVal) -> {
// Do whatever you want
});
Note:To listen to both width and height changes, the same listener can be used really simply:
注意：要监听宽度和高度的变化，可以非常简单地使用同一个监听器：
ChangeListener<Number> stageSizeListener = (observable, oldValue, newValue) ->
System.out.println("Height: " + stage.getHeight() + " Width: " + stage.getWidth());
stage.widthProperty().addListener(stageSizeListener);
stage.heightProperty().addListener(stageSizeListener);
回答by M. S.
Keeping a fixed width to height ratio:
保持固定的宽高比：
stage.minHeightProperty().bind(stage.widthProperty().multiply(0.5));
stage.maxHeightProperty().bind(stage.widthProperty().multiply(0.5));
