java - JavaFX - horizontal marquee text -

i trying achieve effect similar marquee - line of long (in case) text moved in horizontal axis. managed work, can't call satisfactory.

my controller class looks below:

@fxml private text newsfeedtext;  (...) @override public void initialize(url url, resourcebundle resourcebundle) {     translatetransition transition = translatetransitionbuilder.create()             .duration(new duration(7500))             .node(newsfeedtext)             .interpolator(interpolator.linear)             .cyclecount(timeline.indefinite)             .build();         graphicsdevice gd = graphicsenvironment.getlocalgraphicsenvironment().getdefaultscreendevice();     int width = gd.getdisplaymode().getwidth();      transition.setfromx(width);     transition.settox(-width);     transition.play(); } 

newsfeedtext binded text source dynamically updated, contains various amount of text.

my code has @ least 2 drawbacks:

• transition goes -width +width; width monitor's resolution width

there moments when text not visible @ if window not full-screened. if text longer , newsfeedtext width greater monitor's resolution width transition disappear "in half" (still being on screen).

• currently duration not dependent on width of newsfeedtext.

now, it's nothing worng, if transition's fromx , tox dynamically calculated result in various speeds of marquee.

how rid of these drawbacks?

i have managed work, recalculations can happen after transition stopped cannot set cyclecount timeline.indefinite. requirement change text inside component there fxml wirings:

@fxml private text node; // text marquee  @fxml private pane parentpane; // pane on text placed 

the code works is:

transition = translatetransitionbuilder.create()         .duration(new duration(10))         .node(node)         .interpolator(interpolator.linear)         .cyclecount(1)         .build();  transition.setonfinished(new eventhandler<actionevent>() {     @override     public void handle(actionevent actionevent) {         rerunanimation();     } });  rerunanimation(); 

where rerunanimation() is:

private void rerunanimation() {     transition.stop();     // if needed set different text on "node"     recalculatetransition();     transition.playfromstart(); } 

and recalculatetransition() is:

private void recalculatetransition() {     transition.settox(node.getboundsinlocal().getmaxx() * -1 - 100);     transition.setfromx(parentpane.widthproperty().get() + 100);      double distance = parentpane.widthproperty().get() + 2 * node.getboundsinlocal().getmaxx();     transition.setduration(new duration(distance / speed_factor)); }