热门动态更新字体大小 [英] Hot to update dynamically font size

问题描述

我有这个css文件，用于设置JavaFX应用程序中的默认字体大小和类型：

I have this css file which sets the default font size and type in JavaFX application:

.root {
  -fx-font: 13px Tahoma;
}

scene.getStylesheets().add(getClass().getResource("/styles/Styles.css").toExternalForm());

我想动态更新根组件的Java代码的大小和字体类型（全部组件）。我怎么做？

I want to update the size and the font type from the Java code dynamically of the root component (all components). How I can do this?

注意：
此代码将所有组件的Font类型和大小更新到JavaFX应用程序中。

Note: This code updates the Font type and size of all components into the JavaFX application.

推荐答案

请考虑查看官方JavaFX 文档。在那里你找到了回答你问题的代码示例：

Please consider taking a look at the official JavaFX documentation. There you find the code example which answers your question:

Text t = new Text("That's the text");
t.setFont(Font.font ("Verdana", 20));

更新

在应用程序控制器中获取根窗格的实例，例如 AnchorPane 并使用 setId（）函数为整个窗格设置新样式（我的 actionChange 与窗格上的按钮连接，触发事件/更改）：

In your application controller get an instance of your root pane, e.g. AnchorPane and use the setId("") function to set new style for the whole pane (my actionChange is connected with a button on the pane, which triggers the event/change):

public class AppController implements Initializable {
    @FXML
    private AnchorPane mainPane;

    @Override
    public void initialize(URL arg0, ResourceBundle arg1) {
        // TODO Auto-generated method stub
    }

    @FXML
    public void actionChange() {
        mainPane.setId("fancytext");
    }
}

按下按钮时，窗格的样式为改变。我只是用font-size作为例子。之前，您需要在CSS文件中指定新样式：

When pressing the button, the style for the pane is changed. I just used the font-size as an example. Before, you need to specify the new style in your CSS file:

.root {
    -fx-font: 12px Tahoma;
}

#fancytext {
    -fx-font: 20px Tahoma;
}

之前：

之后是按下按钮：

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