Java Code Examples for javafx.scene.control.ScrollPane#setHvalue()

private static void ensureVisible(ScrollPane pane, Node node) {
    Bounds viewport = pane.getViewportBounds();
    double contentHeight = pane.getContent().getBoundsInLocal().getHeight();
    double contentWidth = pane.getContent().getBoundsInLocal().getWidth();
    double nodeMinY = node.getBoundsInParent().getMinY();
    double nodeMaxY = node.getBoundsInParent().getMaxY();
    double nodeMinX = node.getBoundsInParent().getMinX();
    double nodeMaxX = node.getBoundsInParent().getMaxX();
    double viewportMinY = (contentHeight - viewport.getHeight()) * pane.getVvalue();
    double viewportMaxY = viewportMinY + viewport.getHeight();
    double viewportMinX = (contentWidth - viewport.getWidth()) * pane.getHvalue();
    double viewportMaxX = viewportMinX + viewport.getWidth();
    if (nodeMinY < viewportMinY) {
        pane.setVvalue(nodeMinY / (contentHeight - viewport.getHeight()));
    } else if (nodeMaxY > viewportMaxY) {
        pane.setVvalue((nodeMaxY - viewport.getHeight()) / (contentHeight - viewport.getHeight()));
    }
    if (nodeMinX < viewportMinX) {
        pane.setHvalue(nodeMinX / (contentWidth - viewport.getWidth()));
    } else if (nodeMaxX > viewportMaxX) {
        pane.setHvalue((nodeMaxX - viewport.getWidth()) / (contentWidth - viewport.getWidth()));
    }

}
 

protected void ensureVisible(Node target) {
    ScrollPane scrollPane = getParentScrollPane(target);
    if (scrollPane == null) {
        return;
    }
    Node content = scrollPane.getContent();
    Bounds contentBounds = content.localToScene(content.getBoundsInLocal());
    Bounds viewportBounds = scrollPane.getViewportBounds();
    Bounds nodeBounds = target.localToScene(target.getBoundsInLocal());
    if (scrollPane.contains(nodeBounds.getMinX() - contentBounds.getMinX(), nodeBounds.getMinY() - contentBounds.getMinY())) {
        return;
    }
    double toVScroll = (nodeBounds.getMinY() - contentBounds.getMinY())
            * ((scrollPane.getVmax() - scrollPane.getVmin()) / (contentBounds.getHeight() - viewportBounds.getHeight()));
    scrollPane.setVvalue(toVScroll);
    double toHScroll = (nodeBounds.getMinX() - contentBounds.getMinX())
            * ((scrollPane.getHmax() - scrollPane.getHmin()) / (contentBounds.getWidth() - viewportBounds.getWidth()));
    scrollPane.setHvalue(toHScroll);
}
 

private void scrollTo(Node target) {
    ScrollPane scrollPane = getParentScrollPane(target);
    if (scrollPane == null)
        return;
    Node content = scrollPane.getContent();
    Bounds contentBounds = content.localToScene(content.getBoundsInLocal());
    Bounds viewportBounds = scrollPane.getViewportBounds();
    Bounds nodeBounds = target.localToScene(target.getBoundsInLocal());
    double toVScroll = (nodeBounds.getMinY() - contentBounds.getMinY())
            * ((scrollPane.getVmax() - scrollPane.getVmin()) / (contentBounds.getHeight() - viewportBounds.getHeight()));
    if (toVScroll >= scrollPane.getVmin() && toVScroll < scrollPane.getVmax())
        scrollPane.setVvalue(toVScroll);
    double toHScroll = (nodeBounds.getMinX() - contentBounds.getMinX())
            * ((scrollPane.getHmax() - scrollPane.getHmin()) / (contentBounds.getWidth() - viewportBounds.getWidth()));
    if (toHScroll >= scrollPane.getHmin() && toHScroll < scrollPane.getHmax())
        scrollPane.setHvalue(toHScroll);
}
 

private static void repositionScroller(Node scrollContent, ScrollPane scroller, double scaleFactor,
		Point2D scrollOffset) {
	double scrollXOffset = scrollOffset.getX();
	double scrollYOffset = scrollOffset.getY();
	double extraWidth = scrollContent.getLayoutBounds().getWidth() - scroller.getViewportBounds().getWidth();
	if (extraWidth > 0) {
		double halfWidth = scroller.getViewportBounds().getWidth() / 2;
		double newScrollXOffset = (scaleFactor - 1) * halfWidth + scaleFactor * scrollXOffset;
		scroller.setHvalue(
				scroller.getHmin() + newScrollXOffset * (scroller.getHmax() - scroller.getHmin()) / extraWidth);
	} else {
		scroller.setHvalue(scroller.getHmin());
	}
	double extraHeight = scrollContent.getLayoutBounds().getHeight() - scroller.getViewportBounds().getHeight();
	if (extraHeight > 0) {
		double halfHeight = scroller.getViewportBounds().getHeight() / 2;
		double newScrollYOffset = (scaleFactor - 1) * halfHeight + scaleFactor * scrollYOffset;
		scroller.setVvalue(
				scroller.getVmin() + newScrollYOffset * (scroller.getVmax() - scroller.getVmin()) / extraHeight);
	} else {
		scroller.setHvalue(scroller.getHmin());
	}
}
 

/** Ctrl-Wheel zoom gesture help function
 *  Repositioning scrollbars in scroller so that the zoom centre stays at mouse cursor
 */
private void repositionScroller(final Node scrollContent, final ScrollPane scroller, final double scaleFactor, final Point2D scrollOffset, final Point2D mouse)
{
    double scrollXOffset = scrollOffset.getX();
    double scrollYOffset = scrollOffset.getY();
    double extraWidth = scrollContent.getLayoutBounds().getWidth() - scroller.getViewportBounds().getWidth();
    if (extraWidth > 0)
    {
        double newScrollXOffset = (scaleFactor - 1) *  mouse.getX() + scaleFactor * scrollXOffset;
        scroller.setHvalue(scroller.getHmin() + newScrollXOffset * (scroller.getHmax() - scroller.getHmin()) / extraWidth);
    }
    else
        scroller.setHvalue(scroller.getHmin());
    double extraHeight = scrollContent.getLayoutBounds().getHeight() - scroller.getViewportBounds().getHeight();
    if (extraHeight > 0)
    {
        double newScrollYOffset = (scaleFactor - 1) * mouse.getY() + scaleFactor * scrollYOffset;
        scroller.setVvalue(scroller.getVmin() + newScrollYOffset * (scroller.getVmax() - scroller.getVmin()) / extraHeight);
    }
    else
        scroller.setHvalue(scroller.getHmin());
}
 

@Override
public void setZoom(final double x, final double y, final double z) {
	if(z <= getMaxZoom() && z >= getMinZoom() && !MathUtils.INST.equalsDouble(z, zoom.getValue())) {
		final double oldZoom = zoom.get();
		final ScrollPane sp = getScrollPane();
		zoom.setValue(z);
		setScaleX(z);
		setScaleY(z);

		if(MathUtils.INST.isValidPt(x, y) && sp != null) {
			sp.layout();

			final double newX = x / oldZoom * z;
			final double newY = y / oldZoom * z;
			final double gapX = newX - x;
			final double gapY = newY - y;
			final double gapInH = gapX / (getWidth() - sp.getViewportBounds().getWidth());
			final double gapInV = gapY / (getHeight() - sp.getViewportBounds().getHeight());

			sp.setHvalue(sp.getHvalue() + gapInH);
			sp.setVvalue(sp.getVvalue() + gapInV);
		}
		setModified(true);
	}
}
 

private double updatePosX() {
	final ScrollPane sp = getSkinnable();
	double x = isReverseNodeOrientation() ? (hsb.getMax() - (posX - hsb.getMin())) : posX;
	double minX = Math.min((-x / (hsb.getMax() - hsb.getMin()) * (nodeWidth - contentWidth)), 0);
	viewContent.setLayoutX(snapPosition(minX));
	if (!sp.hvalueProperty().isBound())
		sp.setHvalue(Utils.clamp(sp.getHmin(), posX, sp.getHmax()));
	return posX;
}
 

public static void setScrollPane(ScrollPane scrollPane, double xOffset,
        double yOffset) {
    final Bounds visibleBounds = scrollPane.getViewportBounds();
    double scrollWidth = scrollPane.getContent().getBoundsInParent().getWidth() - visibleBounds.getWidth();
    double scrollHeight = scrollPane.getContent().getBoundsInParent().getHeight() - visibleBounds.getHeight();

    scrollPane.setHvalue(scrollPane.getHvalue() + xOffset / scrollWidth);
    scrollPane.setVvalue(scrollPane.getVvalue() + yOffset / scrollHeight);
}
 

private void setScrollPosition(double x, double y) {
	CircuitManager manager = getCurrentCircuit();
	if(manager != null) {
		ScrollPane scrollPane = manager.getCanvasScrollPane();
		Canvas canvas = manager.getCanvas();
		
		scrollPane.setHvalue(scrollPane.getHmax() * x / canvas.getWidth());
		scrollPane.setVvalue(scrollPane.getVmax() * y / canvas.getHeight());
	}
}