Class BasicScrollBarUI.TrackListener
- java.lang.Object
-
- java.awt.event.MouseAdapter
-
- javax.swing.plaf.basic.BasicScrollBarUI.TrackListener
- All Implemented Interfaces:
-
MouseListener,MouseMotionListener,MouseWheelListener,EventListener
- Enclosing class:
- BasicScrollBarUI
protected class BasicScrollBarUI.TrackListener extends MouseAdapter implements MouseMotionListener
Track mouse drags.
Fields
| Modifier and Type | Field | Description |
|---|---|---|
protected int |
currentMouseX |
Current mouse x position |
protected int |
currentMouseY |
Current mouse y position |
protected int |
offset |
The offset |
Constructors
| Modifier | Constructor | Description |
|---|---|---|
protected |
TrackListener() |
Methods
| Modifier and Type | Method | Description |
|---|---|---|
void |
mouseDragged(MouseEvent e) |
Set the models value to the position of the thumb's top of Vertical scrollbar, or the left/right of Horizontal scrollbar in left-to-right/right-to-left scrollbar relative to the origin of the track. |
void |
mouseExited(MouseEvent e) |
Invoked when the mouse exits the scrollbar. |
void |
mousePressed(MouseEvent e) |
If the mouse is pressed above the "thumb" component then reduce the scrollbars value by one page ("page up"), otherwise increase it by one page. |
Methods declared in class java.awt.event.MouseAdapter
mouseMoved, mouseWheelMoved
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods declared in interface java.awt.event.MouseListener
mouseClicked, mouseEntered, mouseReleased
Methods declared in interface java.awt.event.MouseMotionListener
mouseMoved
Fields
offset
protected transient int offset
The offset
currentMouseX
protected transient int currentMouseX
Current mouse x position
currentMouseY
protected transient int currentMouseY
Current mouse y position
Constructors
TrackListener
protected TrackListener()
Methods
mousePressed
public void mousePressed(MouseEvent e)
If the mouse is pressed above the "thumb" component then reduce the scrollbars value by one page ("page up"), otherwise increase it by one page. If there is no thumb then page up if the mouse is in the upper half of the track.
- Specified by:
-
mousePressedin interfaceMouseListener - Parameters:
-
e- the event to be processed
mouseDragged
public void mouseDragged(MouseEvent e)
Set the models value to the position of the thumb's top of Vertical scrollbar, or the left/right of Horizontal scrollbar in left-to-right/right-to-left scrollbar relative to the origin of the track.
- Specified by:
-
mouseDraggedin interfaceMouseMotionListener - Overrides:
-
mouseDraggedin classMouseAdapter - Parameters:
-
e- the event to be processed
mouseExited
public void mouseExited(MouseEvent e)
Invoked when the mouse exits the scrollbar.
- Specified by:
-
mouseExitedin interfaceMouseListener - Parameters:
-
e- MouseEvent further describing the event - Since:
- 1.5
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/plaf/basic/BasicScrollBarUI.TrackListener.html
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