On 09/19/2012 03:55 PM, Russell Edwards wrote:
Hello,
Apologies for asking a beginner's question.
I am writing a plugin which has its own MapMode. I need to catch mouse
wheel and key press events. How can I do this?
I have tried
... extends MapMode implements MouseWheelListener, KeyListener
... enterMode() {
...
Main.map.mapView.addMouseWheelListener(this);
Main.map.mapView.addKeyListener(this);
...
}
but the listeners never seem to get called. Moreover the map still zooms
in and out when the wheel is moved.
Thanks in advance for your help and patience,
I put your code in SelectAction and MouseWheelListener worked directly.
Not sure if you can easily suppress zoom, though. What is your mapmode
about?
Other plugins have a similar similar setup, e.g. alignways has a mapmode
with MouseListener. In order to catch keystrokes, you should try
AWTEventListener.
Paul
Index: src/org/openstreetmap/josm/actions/mapmode/SelectAction.java
===================================================================
--- src/org/openstreetmap/josm/actions/mapmode/SelectAction.java (revision 5513)
+++ src/org/openstreetmap/josm/actions/mapmode/SelectAction.java (working copy)
@@ -14,6 +14,8 @@
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
+import java.awt.event.MouseWheelEvent;
+import java.awt.event.MouseWheelListener;
import java.awt.geom.Point2D;
import java.util.Collection;
import java.util.Collections;
@@ -63,7 +65,12 @@
*
* @author imi
*/
-public class SelectAction extends MapMode implements AWTEventListener, SelectionEnded {
+public class SelectAction extends MapMode implements AWTEventListener, SelectionEnded, MouseWheelListener {
+
+ @Override
+ public void mouseWheelMoved(MouseWheelEvent e) {
+ System.err.println("mouse wheel!");
+ }
// "select" means the selection rectangle and "move" means either dragging
// or select if no mouse movement occurs (i.e. just clicking)
enum Mode { move, rotate, scale, select }
@@ -178,11 +185,14 @@
super.enterMode();
mv.addMouseListener(this);
mv.addMouseMotionListener(this);
+ mv.addMouseWheelListener(this);
mv.setVirtualNodesEnabled(Main.pref.getInteger("mappaint.node.virtual-size", 8) != 0);
drawTargetHighlight = Main.pref.getBoolean("draw.target-highlight", true);
cycleManager.init();
virtualManager.init();
// This is required to update the cursors when ctrl/shift/alt is pressed
+
+ // Keyevents:
try {
Toolkit.getDefaultToolkit().addAWTEventListener(this, AWTEvent.KEY_EVENT_MASK);
} catch (SecurityException ex) {}
@@ -207,6 +217,7 @@
* This is called whenever the keyboard modifier status changes
*/
public void eventDispatched(AWTEvent e) {
+ System.err.println("AWT: "+e);
if(oldEvent == null)
return;
// We don't have a mouse event, so we pass the old mouse event but the
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