Java Code Examples for javafx.scene.layout.Region#setPrefHeight()

public static void setHBoxPosition(Region element, double width, double height, Insets margin){

        if(width == -1){
            HBox.setHgrow(element, Priority.ALWAYS);
            element.setMaxWidth(Double.MAX_VALUE);
        }else if(width != 0){
            element.setPrefWidth(width);
            element.minWidthProperty().bind(new SimpleDoubleProperty(width));
        }
        if(height == -1){
            VBox.setVgrow(element, Priority.ALWAYS);
        }else if(height != 0){
            element.setPrefHeight(height);
            element.minHeightProperty().bind(new SimpleDoubleProperty(height));
        }
        HBox.setMargin(element, margin);
    }
 

public static void setVBoxPosition(Region element, double width, double height, Insets margin){

        if(width == -1){
            HBox.setHgrow(element, Priority.ALWAYS);
            element.setMaxWidth(Double.MAX_VALUE);
        }else if(width != 0){
            element.setPrefWidth(width);
            element.minWidthProperty().bind(new SimpleDoubleProperty(width));
        }
        if(height == -1){
            VBox.setVgrow(element, Priority.ALWAYS);
        }else if(height != 0){
            element.setPrefHeight(height);
            element.minHeightProperty().bind(new SimpleDoubleProperty(height));
        }
        VBox.setMargin(element, margin);
    }
 

private static void dragNorth(MouseEvent event, Wrapper<Point2D> mouseLocation, Region region, double handleRadius) {
	final double deltaY = event.getSceneY() - mouseLocation.value.getY();
	final double newY = region.getLayoutY() + deltaY;
	if(newY != 0 && newY >= handleRadius && newY <= region.getLayoutY() + region.getHeight() - handleRadius) {
		region.setLayoutY(newY);
		region.setPrefHeight(region.getPrefHeight() - deltaY);
	}
}
 

private static void dragSouth(MouseEvent event, Wrapper<Point2D> mouseLocation, Region region, double handleRadius) {
	final double deltaY = event.getSceneY() - mouseLocation.value.getY();
	final double newMaxY = region.getLayoutY() + region.getHeight() + deltaY;
	if(newMaxY >= region.getLayoutY() && newMaxY <= region.getParent().getBoundsInLocal().getHeight() - handleRadius) {
		region.setPrefHeight(region.getPrefHeight() + deltaY);
	}
}
 

public Loading(URL imageUrl) {
    super();
    // 设置背景颜色
    setBackgroundColor(20,20,20,0.5f);
    contentBox = new VBox();

    // 间隔
    Region topRegion = new Region();
    topRegion.setPrefHeight(20);
    contentBox.getChildren().add(topRegion);

    // gif动态图
    imageView = new ImageView();
    imageView.setSmooth(true);
    setImage(imageUrl);
    contentBox.getChildren().add(imageView);

    // 间隔
    Region region = new Region();
    region.setPrefHeight(15);
    contentBox.getChildren().add(region);

    // 提示信息
    text = new Text();
    text.setStyle("-fx-fill: white; -fx-font-size:24;");
    contentBox.getChildren().add(text);

    // 设置内容居中
    contentBox.alignmentProperty().set(Pos.CENTER);
    // 设置布局居中
    setAlignment(contentBox,Pos.CENTER);
    getChildren().add(contentBox);
}
 

/**
 * Creates a "Scale Pane", which is a pane that scales as it resizes, instead of reflowing layout
 * like a normal pane. It can be used to create an effect like a presentation slide. There is no
 * attempt to preserve the aspect ratio.
 * <p>
 * If the region has an explicitly set preferred width and height, those are used unless
 * override is set true.
 * <p>
 * If the region already has a parent, the returned pane will replace it via the
 * {@link #replaceComponent(Node, Node)} method. The Region's parent must be a Pane in this case.
 *
 * @param region   non-null Region
 * @param w        default width, used if the region's width is calculated
 * @param h        default height, used if the region's height is calculated
 * @param override if true, w,h is the region's "100%" size even if the region has an explicit
 *                 preferred width and height set.
 *
 * @return the created StackPane, with preferred width and height set based on size determined by
 *         w, h, and override parameters.
 */
public static StackPane createScalePane( Region region, double w, double h, boolean override ) {
	//If the Region containing the GUI does not already have a preferred width and height, set it.
	//But, if it does, we can use that setting as the "standard" resolution.
	if ( override || region.getPrefWidth() == Region.USE_COMPUTED_SIZE )
		region.setPrefWidth( w );
	else
		w = region.getPrefWidth();

	if ( override || region.getPrefHeight() == Region.USE_COMPUTED_SIZE )
		region.setPrefHeight( h );
	else
		h = region.getPrefHeight();

	StackPane ret = new StackPane();
	ret.setPrefWidth( w );
	ret.setPrefHeight( h );
	if ( region.getParent() != null )
		replaceComponent( region, ret );

	//Wrap the resizable content in a non-resizable container (Group)
	Group group = new Group( region );
	//Place the Group in a StackPane, which will keep it centered
	ret.getChildren().add( group );

	//Bind the scene's width and height to the scaling parameters on the group
	group.scaleXProperty().bind( ret.widthProperty().divide( w ) );
	group.scaleYProperty().bind( ret.heightProperty().divide( h ) );

	return ret;
}