default cancelTouchFocusChild() to protected

[Phibedy]

To be able to extend Scrollpane and have control about those methods,
see http://www.badlogicgames.com/forum/viewtopic.php?f=11&t=16416
Not sure what has to be changed on the gwt backend

[NathanSweet]

Does setting ScrollPane#setCancelTouchFocus to false help your issue?

[Phibedy]

No, as I need some informationa about the Scrollpane to block it or not.
A protected method ScrollPane#isCancelTouchFocus(InputEvent event) that is called in ScrollPane#cancelTouchFocusedChild (InputEvent event) would do the job. (line 234 - if (!cancelTouchFocus) return;) -> if (!isCancelTouchFocus(event)) return;
isCancelTouchFocus(InputEvent event) would return by default "cancelTouchFocus" so it wouldn't change the bahavior but I could override it and have the Inputevent.
Thanks for support :)

[NathanSweet]

Before I merge, I'd like to understand why you need it. Why block it sometimes? Maybe disable flick scrolling?

[Phibedy]

Dont think it would do the job:
I got a scrollpane full of WidgetGroups (two actors in each, one on top of the other). if the user drags left/right the scrollpane should not scroll down/up (User wont get a 100% left/right move). Instead the actor on the top will move to the lift/right you will see the actor underneeth.
That's why I cant just block the scrollpane like block "touchDown-events" as I still want to be able to scroll up/down.
I need a way to determine if the user does a scroll-y (if yes, cancelChild..., if no block cancelChild)

[NathanSweet]

How about setScrollingDisabled(false, true)?

[Phibedy]

Yes, I am using that for disabling scrolling, but that doesnt have any effect on releasing the focus of the childs. the draglistener is attached to each widgetGround inside the scrollpane.
see http://www.badlogicgames.com/forum/viewtopic.php?f=11&t=16416

[NathanSweet]

Maybe you can show a simple executable example of the problem? I'm guessing you can stop the drag event so it never reaches the scroll pane if the DragAndDrop is handling it.

[Phibedy]

Project :)
Just a scrollpane with two actos and draglisteners inside a table.
applicationlistener:
www.mineforce.de/testp.zip
complete project:
www.mineforce.de/test.zip
I dont think it can be stopped by some listeners as I dont want to block scroll-y and touch-up-events cant be blocked in scene2d.

[NathanSweet]

Next time please use post a single class that shows the issue. Here's code to do what you want, I don't think ScrollPane needs any changes.

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.scenes.scene2d.utils.DragListener;

public class TestGui extends Table {

    private Table contentTable;

    /** if the user drags in x -direction drag should be called until the user, not the scrollpane calls the touchUp <br>
     * I am not looking for a hacky solution I need one class to do this as this feature is used very often <br>
     * @param stage */
    public TestGui (final Stage stage) {
        stage.clear();
        this.setSize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        this.defaults().top();
        contentTable = new Table();
        Image firstL = new Image(new Texture("badlogic.jpg"));
        Image secondL = new Image(new Texture("badlogic.jpg"));
        contentTable.add(firstL).expandX().fillX();
        contentTable.row();
        contentTable.add(secondL).expandX().fillX();
        contentTable.setSize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());

        final ScrollPane sp = new ScrollPane(contentTable);
        add(sp).expandX().fillX().height(Gdx.graphics.getHeight() / 2);
        sp.setScrollingDisabled(true, false);
        stage.addActor(this);

        DragListener dragListener = new DragListener() {
            private boolean ignoreHorizontalDrag;

            public void dragStart (InputEvent event, float x, float y, int pointer) {
                System.out.println(Math.abs(getTouchDownY() - y));
                ignoreHorizontalDrag = Math.abs(getTouchDownY() - y) > getTapSquareSize();
                if (ignoreHorizontalDrag) {
                    System.out.println("Drag started vertically, ignore DragListener drag.");
                } else {
                    System.out.println("Drag started horizontally, ignore ScrollPane drag.");
                    sp.cancel();
                }
            }

            public void drag (InputEvent event, float x, float y, int pointer) {
                if (ignoreHorizontalDrag) return;
                System.out.println("drag first " + x);
            }
        };
        dragListener.setTapSquareSize(19); // Can be anything less than the ScrollPane's default of 20.
        firstL.addListener(dragListener);
    }

    public static void main (String[] arg) {
        new LwjglApplication(new Test());
    }
}

[Phibedy]

I will do it next time :)
That's not exactly what I was looking for. For example if I draw an "L" it wont perform a scrolldown -> move actor to the left.
But thanks for helping anyways :)