JavaFX CSS：更改TabPane Tab标头形状

Question

I am trying to change the Tab header shape in css , but when I look at the css reference for JavaFX in here , I can't find what are the accessible properties of a Tab through css . I want to have a trapezoid shape instead of a rectangle. Any idea how to accomplish this task?

Answer 1

You can check the default modena.css in any case:

Tab s have the CSS class: .tab-pane > .tab-header-area > .headers-region > .tab

So for example adding the following to your CSS file:

.tab-pane > .tab-header-area > .headers-region > .tab {
    -fx-background-radius: 20;
}

.tab-pane:focused > .tab-header-area > .headers-region > .tab:selected .focus-indicator {
    -fx-border-radius: 20;
}

will result in the following:

For trapezoid you need to use the -fx-shape attribute:

.tab-pane > .tab-header-area > .headers-region > .tab {
      -fx-shape: "M300,290 L310,168 L410,168 L421,290 L300,290 z";
}

.tab-pane:focused > .tab-header-area > .headers-region > .tab:selected .focus-indicator {
    -fx-shape: "M300,290 L310,168 L410,168 L421,290 L300,290 z";
}   

which will result in: