@Override
public Point2D _getMidpoint() {
StackPane tabRegion = getTabRegion();
Bounds boundsInParent = tabRegion.getBoundsInParent();
double x = boundsInParent.getWidth() / 2;
double y = boundsInParent.getHeight() / 2;
return tabRegion.localToParent(x, y);
}
/**
* Initializes the ScrollBarSkin. Creates the scene and sets up all the bindings for the group.
*/
private void initialize() {
track = new StackPane();
track.getStyleClass().setAll("track");
trackBackground = new StackPane();
trackBackground.getStyleClass().setAll("track-background");
thumb =
new StackPane() {
@Override
public Object queryAccessibleAttribute(
AccessibleAttribute attribute, Object... parameters) {
switch (attribute) {
case VALUE:
return getSkinnable().getValue();
default:
return super.queryAccessibleAttribute(attribute, parameters);
}
}
};
thumb.getStyleClass().setAll("thumb");
thumb.setAccessibleRole(AccessibleRole.THUMB);
if (!IS_TOUCH_SUPPORTED) {
incButton =
new EndButton("increment-button", "increment-arrow") {
@Override
public void executeAccessibleAction(AccessibleAction action, Object... parameters) {
switch (action) {
case FIRE:
getSkinnable().increment();
break;
default:
super.executeAccessibleAction(action, parameters);
}
}
};
incButton.setAccessibleRole(AccessibleRole.INCREMENT_BUTTON);
incButton.setOnMousePressed(
me -> {
/*
** if the tracklenght isn't greater than do nothing....
*/
if (!thumb.isVisible() || trackLength > thumbLength) {
getBehavior().incButtonPressed();
}
me.consume();
});
incButton.setOnMouseReleased(
me -> {
/*
** if the tracklenght isn't greater than do nothing....
*/
if (!thumb.isVisible() || trackLength > thumbLength) {
getBehavior().incButtonReleased();
}
me.consume();
});
decButton =
new EndButton("decrement-button", "decrement-arrow") {
@Override
public void executeAccessibleAction(AccessibleAction action, Object... parameters) {
switch (action) {
case FIRE:
getSkinnable().decrement();
break;
default:
super.executeAccessibleAction(action, parameters);
}
}
};
decButton.setAccessibleRole(AccessibleRole.DECREMENT_BUTTON);
decButton.setOnMousePressed(
me -> {
/*
** if the tracklenght isn't greater than do nothing....
*/
if (!thumb.isVisible() || trackLength > thumbLength) {
getBehavior().decButtonPressed();
}
me.consume();
});
decButton.setOnMouseReleased(
me -> {
/*
** if the tracklenght isn't greater than do nothing....
*/
if (!thumb.isVisible() || trackLength > thumbLength) {
getBehavior().decButtonReleased();
}
me.consume();
});
}
track.setOnMousePressed(
me -> {
if (!thumb.isPressed() && me.getButton() == MouseButton.PRIMARY) {
if (getSkinnable().getOrientation() == Orientation.VERTICAL) {
if (trackLength != 0) {
getBehavior().trackPress(me.getY() / trackLength);
me.consume();
}
} else {
if (trackLength != 0) {
getBehavior().trackPress(me.getX() / trackLength);
me.consume();
}
}
}
});
track.setOnMouseReleased(
me -> {
getBehavior().trackRelease();
me.consume();
});
thumb.setOnMousePressed(
me -> {
if (me.isSynthesized()) {
// touch-screen events handled by Scroll handler
me.consume();
return;
}
/*
** if max isn't greater than min then there is nothing to do here
*/
if (getSkinnable().getMax() > getSkinnable().getMin()) {
dragStart = thumb.localToParent(me.getX(), me.getY());
double clampedValue =
Utils.clamp(
getSkinnable().getMin(), getSkinnable().getValue(), getSkinnable().getMax());
preDragThumbPos =
(clampedValue - getSkinnable().getMin())
/ (getSkinnable().getMax() - getSkinnable().getMin());
me.consume();
}
});
thumb.setOnMouseDragged(
me -> {
if (me.isSynthesized()) {
// touch-screen events handled by Scroll handler
me.consume();
return;
}
/*
** if max isn't greater than min then there is nothing to do here
*/
if (getSkinnable().getMax() > getSkinnable().getMin()) {
/*
** if the tracklength isn't greater then do nothing....
*/
if (trackLength > thumbLength) {
Point2D cur = thumb.localToParent(me.getX(), me.getY());
if (dragStart == null) {
// we're getting dragged without getting a mouse press
dragStart = thumb.localToParent(me.getX(), me.getY());
}
double dragPos =
getSkinnable().getOrientation() == Orientation.VERTICAL
? cur.getY() - dragStart.getY()
: cur.getX() - dragStart.getX();
getBehavior().thumbDragged(preDragThumbPos + dragPos / (trackLength - thumbLength));
}
me.consume();
}
});
thumb.setOnScrollStarted(
se -> {
if (se.isDirect()) {
/*
** if max isn't greater than min then there is nothing to do here
*/
if (getSkinnable().getMax() > getSkinnable().getMin()) {
dragStart = thumb.localToParent(se.getX(), se.getY());
double clampedValue =
Utils.clamp(
getSkinnable().getMin(), getSkinnable().getValue(), getSkinnable().getMax());
preDragThumbPos =
(clampedValue - getSkinnable().getMin())
/ (getSkinnable().getMax() - getSkinnable().getMin());
se.consume();
}
}
});
thumb.setOnScroll(
event -> {
if (event.isDirect()) {
/*
** if max isn't greater than min then there is nothing to do here
*/
if (getSkinnable().getMax() > getSkinnable().getMin()) {
/*
** if the tracklength isn't greater then do nothing....
*/
if (trackLength > thumbLength) {
Point2D cur = thumb.localToParent(event.getX(), event.getY());
if (dragStart == null) {
// we're getting dragged without getting a mouse press
dragStart = thumb.localToParent(event.getX(), event.getY());
}
double dragPos =
getSkinnable().getOrientation() == Orientation.VERTICAL
? cur.getY() - dragStart.getY()
: cur.getX() - dragStart.getX();
getBehavior()
.thumbDragged(/*todo*/ preDragThumbPos + dragPos / (trackLength - thumbLength));
}
event.consume();
return;
}
}
});
getSkinnable()
.addEventHandler(
ScrollEvent.SCROLL,
event -> {
/*
** if the tracklength isn't greater then do nothing....
*/
if (trackLength > thumbLength) {
double dx = event.getDeltaX();
double dy = event.getDeltaY();
/*
** in 2.0 a horizontal scrollbar would scroll on a vertical
** drag on a tracker-pad. We need to keep this behavior.
*/
dx = (Math.abs(dx) < Math.abs(dy) ? dy : dx);
/*
** we only consume an event that we've used.
*/
ScrollBar sb = (ScrollBar) getSkinnable();
double delta = (getSkinnable().getOrientation() == Orientation.VERTICAL ? dy : dx);
/*
** RT-22941 - If this is either a touch or inertia scroll
** then we move to the position of the touch point.
*
* TODO: this fix causes RT-23406 ([ScrollBar, touch] Dragging scrollbar from the
* track on touchscreen causes flickering)
*/
if (event.isDirect()) {
if (trackLength > thumbLength) {
getBehavior()
.thumbDragged(
(getSkinnable().getOrientation() == Orientation.VERTICAL
? event.getY()
: event.getX())
/ trackLength);
event.consume();
}
} else {
if (delta > 0.0 && sb.getValue() > sb.getMin()) {
sb.decrement();
event.consume();
} else if (delta < 0.0 && sb.getValue() < sb.getMax()) {
sb.increment();
event.consume();
}
}
}
});
getChildren().clear();
if (!IS_TOUCH_SUPPORTED) {
getChildren().addAll(trackBackground, incButton, decButton, track, thumb);
} else {
getChildren().addAll(track, thumb);
}
}