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package org.litesoft.GWT.client.widgets.nonpublic;
public class DragPositionableController extends AbstractMovable
{
public DragPositionableController( UiPositionable pTarget )
{
super( pTarget );
}
protected boolean dragBy( int pDeltaX, int pDeltaY )
{
getTarget().setPosition( calcNewPos( "X", getTarget().getPosLeft(), pDeltaX, //
getTarget().minPosLeft(), getTarget().maxPosLeft() ),
calcNewPos( "Y", getTarget().getPosTop(), pDeltaY, //
getTarget().minPosTop(), getTarget().maxPosTop() ) );
return true;
}
/**
* @noinspection UnusedDeclaration
*/
private int calcNewPos( String pOrientation, int pCurrentPosition, int pDelta,
int pMinimumPosition, int pMaximumPosition )
{
int zNewPosition = pCurrentPosition;
if ( pDelta < 0 )
{
if ( (zNewPosition += pDelta) < pMinimumPosition )
{
zNewPosition = pMinimumPosition;
}
}
else if ( (pDelta > 0) && (pMaximumPosition > 0) )
{
if ( (zNewPosition += pDelta) > pMaximumPosition )
{
zNewPosition = pMaximumPosition;
}
}
return zNewPosition;
}
}
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Revision |
Author |
Commited |
Message |
2
|
GeorgeS
|
Sun 07 Feb, 2010 12:50:58 +0000 |
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