Try using System.out() to log progress. If you set a breakpoint, your
transition will almost certainly complete while you are stepping through code.
Also try extending the transition duration since that will give you a larger
data set.
On May 26, 2011, at 9:15 PM, Edgar Merino wrote:
> Hello, I've been trying to fix a bug I just found using Transitions and
> ComponentMouseListeners. You can take, for example, the ScaleTransition I
> just submitted to the dev mailing list, although this should apply to any
> transition.
>
> For this example, I'll use the ScaleTransition in a ComponentMouseListener,
> as follows:
>
>
> import java.util.Arrays;
> import java.util.Collection;
> import org.apache.pivot.wtk.Component;
> import org.apache.pivot.wtk.ComponentMouseListener;
>
> public class ZoomComponentMouseListener implements ComponentMouseListener {
>
> private ScaleTransition scaleTransition = new ScaleTransition();
>
> public ZoomComponentMouseListener(Component targetComponent) {
> scaleTransition.addComponent(targetComponent);
> }
>
> public boolean mouseMove(Component component, int x, int y) {
> return false;
> }
>
> public void mouseOver(Component component) {
> if (scaleTransition.isRunning()) {
> scaleTransition.reverse();
> } else {
> scaleTransition.setReversed(false);
> scaleTransition.start();
> }
> }
>
> public void mouseOut(Component component) {
> if (scaleTransition.isRunning()) {
> scaleTransition.reverse();
> } else {
> scaleTransition.setReversed(true);
> scaleTransition.start();
> }
> }
>
> public void setZoom(float zoom) {
> scaleTransition.setZoom(zoom);
> }
> }
>
>
> When this listener is attached to a Component, like an ImageView for example,
> if you get through the ImageView quickly with the mouse pointer and then
> cross it again quickly, the method Transition#getPercentComplete will get
> screwed, the second time the transition is started getPercentComplete will
> report 1 when it should report 0. I've tested this many times, before calling
> Transition#start, getPercentComplete reports 0, when calling start and
> checking the value of getPercentComplete from the Transition#update method it
> reports 1.
>
> I've got no clue on what's happening here, placing a breakpoint inside the
> Transition#start method reports currentTime - startTime == 0, but checking
> again when it gets to the Transition#update method currentTime - startTime ==
> 1.
>
> Perhaps I've anticipated on saying this is a bug for Transitions, perhaps is
> my code what's causing problems, but I just don't have a clue on how to fix
> this.
>
> Please, if anybody's able to reproduce this, let me know so we can find a
> solution. I've attached the ScaleTransition here in case there are users not
> subscribed to the dev mailing list.
>
> Thanks in advance!
> Edgar Merino
> <ScaleTransition.java>
