java 从 JavaFX 标签中删除填充/边距
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Remove padding/margin from JavaFX Label
提问by SDS
Is there a way to remove the default space (padding/margin) that JavaFX label adds? I want to get rid of the space displayed between the black lines on the image below:
有没有办法删除 JavaFX 标签添加的默认空间（填充/边距）？我想去掉下图黑线之间显示的空间：
Source code:
源代码：
public class LabelTest extends Application
{
@Override
public void start(final Stage primaryStage)
{
final Group root = new Group();
final Scene scene = new Scene(root, 300, 130, Color.WHITE);
final GridPane gridpane = new GridPane();
gridpane.setPadding(new Insets(5));
gridpane.setHgap(10);
gridpane.setVgap(10);
final Label label = new Label("Label");
label.setStyle("-fx-font-size:44px;-fx-font-weight: bold;-fx-text-fill:#5E34B1;-fx-background-color:#ffc300;");
GridPane.setHalignment(label, HPos.CENTER);
gridpane.add(label, 0, 0);
root.getChildren().add(gridpane);
primaryStage.setScene(scene);
primaryStage.show();
}
}
回答by Sergey Grinev
You can achieve that by adding -fx-padding: -10 0 0 0;to the list of your styles.
您可以通过添加-fx-padding: -10 0 0 0;到您的样式列表来实现这一点。
For more flexible solution you can use FontMetricsinformation:
要获得更灵活的解决方案，您可以使用以下FontMetrics信息：
FontMetrics metrics = Toolkit.getToolkit().getFontLoader().getFontMetrics(label.getFont());
label.setPadding(new Insets(-metrics.getDescent(), 0, 0, 0));
NB:You need to call that code after scene.show(). Before that graphics engine is not ready to provide correct metrics.
注意：您需要在scene.show(). 在此之前，图形引擎还没有准备好提供正确的指标。
回答by ItachiUchiha
One of the more dynamic ways to do this is to use a Textinstead of a Label and set the boundsTypeas VISUAL. This results in a Text without any padding on the any of the sides of the Text, irrespective of the font size.
执行此操作的一种更动态的方法是使用 aText而不是 Label 并将 设置boundsType为VISUAL。这会导致文本在文本的任何一侧都没有任何填充，而不管字体大小。
Text text = new Text();
text.setBoundsType(TextBoundsType.VISUAL);
回答by Anja
For me it was easiest to just use setPadding.
对我来说，最简单的方法是使用setPadding。
label.setPadding(new Insets(-2,0,0,0)); //top, right, bottom, left
This way I did not have to deal with the css-style sheet.
这样我就不必处理 css 样式表。
回答by Mosch
For more details see my post here Substructure styling
有关更多详细信息，请参阅我在此处的帖子子结构样式
You could also do it like this after the stage.show().
你也可以在stage.show()之后这样做。
With the example of an separator:
以分隔符为例：
Separator separator = new Separator();
separator.setStyle(""
+ "-fx-border-width: 1px;"
+ "-fx-border-color: black;"
+ "-fx-padding: 0px;"
+ "");
stage.show()
Do
做
Node line = separator.lookup(".line");
line.setStyle(""
+ "-fx-border-insets: 0px;"
+ "-fx-border-width: 0px;"
+ "");
or this way index 0because it has only one element at index 0 which is an Region with style calss .line
或者这样索引0，因为它在索引 0 处只有一个元素，它是一个带有样式 calss .line 的区域
separator.getChildrenUnmodifiable().get(0).setStyle(""
+ "-fx-border-insets: 0px;"
+ "-fx-border-width: 0px;"
+ "");
