Package VASSAL.build.module.map

Class PieceMover.DragHandler

java.lang.Object

VASSAL.build.module.map.PieceMover.AbstractDragHandler

VASSAL.build.module.map.PieceMover.DragHandler

All Implemented Interfaces:

DragGestureListener, DragSourceListener, DragSourceMotionListener, DropTargetListener, EventListener

Direct Known Subclasses:

PieceMover.DragHandlerMacOSX

Enclosing class:

PieceMover

public static class PieceMover.DragHandler
extends PieceMover.AbstractDragHandler

VASSAL's front-line drag handler for drag-and-drop of pieces. Implementation of AbstractDragHandler when DragImage is supported by JRE. PieceMover.DragHandlerMacOSX extends this for special Mac platform

Author:

Pieter Geerkens

Field Summary

Fields inherited from class VASSAL.build.module.map.PieceMover.AbstractDragHandler

dragCursor, dragCursorZoom, dragPieceOffCenterZoom, lastDragLocation

Constructor Summary

Constructors

Constructor	Description
DragHandler()

Method Summary

Modifier and Type	Method	Description
void	dragGestureRecognized(DragGestureEvent dge)	DRAG GESTURE LISTENER INTERFACE EVENT uses SCALED, DRAG-SOURCE coordinate system.
void	dragMouseMoved(DragSourceDragEvent e)	DRAG SOURCE MOTION LISTENER INTERFACE EVENT uses UNSCALED, SCREEN coordinate system Moves cursor after mouse.
protected double	getDeviceScale(DragGestureEvent dge)
protected int	getOffsetMult()

Methods inherited from class VASSAL.build.module.map.PieceMover.AbstractDragHandler

beginDragging, dragDropEnd, dragEnter, dragEnter, dragExit, dragExit, dragGestureRecognizedPrep, dragOver, dragOver, drop, dropActionChanged, dropActionChanged, getListener, getTheDragHandler, makeDragCursor, makeDropTarget, moveDragCursor, removeDragCursor, removeDropTarget, setDrawWinToOwnerOf, setTheDragHandler

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DragHandler

public DragHandler()

Method Details

dragGestureRecognized

public void dragGestureRecognized(DragGestureEvent dge)

Description copied from class: PieceMover.AbstractDragHandler

DRAG GESTURE LISTENER INTERFACE EVENT uses SCALED, DRAG-SOURCE coordinate system. ("component coordinates") PIECE uses SCALED, OWNER (arbitrary) coordinate system ("map coordinates") Fires after user begins moving the mouse several pixels over a map. This method will be overridden, but called as a super(), by the Drag Gesture extension that is used, which will either be PieceMover.DragHandler if DragImage is supported by the JRE, or PieceMover.DragHandlerNoImage if not. Either one will have called PieceMover.AbstractDragHandler.dragGestureRecognizedPrep(java.awt.dnd.DragGestureEvent), immediately below, before it calls this method.

Specified by:

dragGestureRecognized in interface DragGestureListener

Overrides:

dragGestureRecognized in class PieceMover.AbstractDragHandler

getOffsetMult

protected int getOffsetMult()

Specified by:

getOffsetMult in class PieceMover.AbstractDragHandler

Returns:

platform-dependent offset multiplier

getDeviceScale

protected double getDeviceScale(DragGestureEvent dge)

Specified by:

getDeviceScale in class PieceMover.AbstractDragHandler

Parameters:

dge - DG event

Returns:

platform-dependent device scale

dragMouseMoved

public void dragMouseMoved(DragSourceDragEvent e)

Description copied from class: PieceMover.AbstractDragHandler

DRAG SOURCE MOTION LISTENER INTERFACE EVENT uses UNSCALED, SCREEN coordinate system Moves cursor after mouse. Used to check for real mouse movement. Warning: dragMouseMoved fires 8 times for each point on development system (Win2k)

Specified by:

dragMouseMoved in interface DragSourceMotionListener

Specified by:

dragMouseMoved in class PieceMover.AbstractDragHandler