Add mouse hover on JTabbledPaneUI with the BasicTabbledPaneUI

[Vincenzo Palazzo]

HI,

I want to add mouse hover on the Tab Pane, the mouse hovers effect desired is very simple, it should change the cursor when the mouse is over the tab name.

I'm doing an example, I have the component MateriaTabblePaneUI with this mouse event:

 protected class MaterialMouseHoverTab implements MaterialMouseHover {

        private Rectangle[] rectangles;

        public MaterialMouseHoverTab(Rectangle[] rectangles) {
            this.rectangles = rectangles;
        }

        @Override
        public void mouseDragged(MouseEvent e) {
        }

        @Override
        public void mouseMoved(MouseEvent e) {
            MaterialLogger.getInstance().debug(LOG_TAG, "Called method mouseMoved inside MaterialMouseHoverTab class");
            JComponent mouseGenerate = (JComponent) e.getSource();
            if (!mouseGenerate.isEnabled()) {
                return;
            }
            if (mouseGenerate.getCursor().equals(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR))) {
                return;
            }
            Point point = e.getPoint();
            for (Rectangle r : rectangles) {
                if (r.contains(point)) {
                    mouseGenerate.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
                    return;
                }
            }
            mouseGenerate.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
        }

     //other empity method
    }

I add the method when the component is painted, so this

 @Override
    protected void paintTab(Graphics g, int tabPlacement, Rectangle[] rects, int tabIndex, Rectangle iconRect, Rectangle textRect) {
        // for some reason tabs aren't painted properly by paint()
        super.paintTab(MaterialDrawingUtils.getAliasedGraphics(g), tabPlacement, rects, tabIndex, iconRect, textRect);
        //TODO Should be the cause of StackOverflowException
        if (mouseHoverEnabled != null && mouseHoverEnabled && mouseHoverTab == null) {
            mouseHoverTab = new MaterialMouseHoverTab(rects);
            tabPane.addMouseMotionListener(mouseHoverTab);
        }
    }

But this event run on all JTabbledComponent and I want to add this effect only on the text of the jTabbledPane, like "Panel1" or "Panel2"

I found this answer on stack overflow, but not use the component BasicTabbledPaneUI https://stackoverflow.com/a/4228349/10854225

I want to make this change because I want optimized the code and I need to help to find some good idea.

The desired effect is

MouseHover effect



Thanks for your time

[Campbell Ritchie]

What happens if you use the addToolTip() method on your tabbed pane?

[Vincenzo Palazzo]

Campbell Ritchie wrote:What happens if you use the addToolTip() method on your tabbed pane?

Thanks for your time.

I added this this.tabPane.setToolTipText("TEST"); and don't have any result.

I'm sorry :/

[Rob Camick]

it should change the cursor when the mouse is over the tab name.

You can try adding the MouseMotionListener to the tabbed pane.

The tabbed pane has a method:

indexAtLocation(….)

If the value is not -1 you set the cursor to whatever you want.

If the value is -1, you set the cursor to null to reset the default cursor.

[Vincenzo Palazzo]

Hi, I lose this message, sorry.

Today I will try this solution and I will return here to know the result.

Thanks for your time.