我已经建立了一个表格,VBox
里面有一个VBox
. 我想让内部VBox
“关闭”从底部到顶部过渡。
之后,外部的下一个元素VBox
应该向上移动以填充空白空间,例如从VBox
.
我怎样才能做到这一点?
VBox
您可以尝试下一种方法:在动画期间使用剪辑来隐藏“消失”的内容并控制内部的高度:
public class ShrinkingVBox extends Application {
private static class SmartVBox extends Region {
private Rectangle clipRect = new Rectangle();
private VBox content = new VBox();
public SmartVBox() {
setClip(clipRect);
getChildren().add(content);
}
// we need next methods to adjust our clipping to inner vbox content
@Override
protected void setWidth(double value) {
super.setWidth(value);
clipRect.setWidth(value);
}
@Override
protected void setHeight(double value) {
super.setHeight(value);
clipRect.setHeight(value);
}
// here we will do all animation
public void closeup() {
setMaxHeight(getHeight());
// animation hides content by moving it out of clipped area
// and reduces control height simultaneously
Timeline animation = TimelineBuilder.create().cycleCount(1).keyFrames(
new KeyFrame(Duration.seconds(1),
new KeyValue(content.translateYProperty(), -getHeight()),
new KeyValue(maxHeightProperty(), 0))).build();
animation.play();
}
protected ObservableList<Node> getContent() {
return content.getChildren();
}
}
@Override
public void start(Stage primaryStage) {
VBox outer = new VBox();
final SmartVBox inner = new SmartVBox();
//some random content for inner vbox
inner.getContent().addAll(
CircleBuilder.create().radius(25).fill(Color.YELLOW).build(),
CircleBuilder.create().radius(25).fill(Color.PINK).build());
// content for outer vbox, including inner vbox and button to run animation
outer.getChildren().addAll(
RectangleBuilder.create().width(50).height(50).fill(Color.GRAY).build(),
inner,
RectangleBuilder.create().width(50).height(50).fill(Color.RED).build(),
RectangleBuilder.create().width(50).height(50).fill(Color.BLUE).build(),
ButtonBuilder.create().text("go").onAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent t) {
inner.closeup();
}
}).build());
primaryStage.setScene(new Scene(new Group(outer)));
primaryStage.show();
}
public static void main(String[] args) {
launch();
}
}