made the moves follow the grid

refs 1948

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/editor/DiagramKeyHandler.java

@@ -17,6 +17,8 @@ $Id$
 +--------------------------------------------------------------------------*/
 package org.fortiss.tooling.base.ui.editor;
 
+import static org.fortiss.tooling.base.layout.DefaultLayoutConstants.DEFAULT_GRID_SIZE;
+
 import org.eclipse.draw2d.FigureCanvas;
 import org.eclipse.draw2d.geometry.Point;
 import org.eclipse.draw2d.geometry.Rectangle;
@@ -41,7 +43,7 @@ import org.fortiss.tooling.kernel.service.IPersistencyService;
  * @author aravantinos
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: 7EC7261CB45A60C97A9AF00CA6E0A150
+ * @ConQAT.Rating YELLOW Hash: 5C22B7A1E2A086815AD43784943CE420
  */
 public class DiagramKeyHandler extends KeyHandler {
 
@@ -78,7 +80,7 @@ public class DiagramKeyHandler extends KeyHandler {
 			return false;
 		FigureCanvas figCanvas = (FigureCanvas)viewer.getControl();
 		Point loc = figCanvas.getViewport().getViewLocation();
-		Rectangle area = figCanvas.getViewport().getClientArea(Rectangle.SINGLETON).scale(.01);
+		Rectangle area = figCanvas.getViewport().getClientArea(Rectangle.SINGLETON).scale(.1);
 		Point scrollCoeff = computeScrollCoeff(event);
 		figCanvas.scrollToY(loc.y + scrollCoeff.y * area.height);
 		figCanvas.scrollToX(loc.x + scrollCoeff.x * area.width);
@@ -96,6 +98,7 @@ public class DiagramKeyHandler extends KeyHandler {
 				(ILayoutedModelElement)viewer.getFocusEditPart().getModel();
 		ITopLevelElement topLevel = IPersistencyService.INSTANCE.getTopLevelElementFor(model);
 		final Point scrollCoeff = computeScrollCoeff(event);
+		scrollCoeff.scale(DEFAULT_GRID_SIZE);
 		topLevel.runAsCommand(new Runnable() {
 			@Override
 			public void run() {
@@ -111,7 +114,7 @@ public class DiagramKeyHandler extends KeyHandler {
 	 *         Coefficient of 1 if the SHIFT key is not pressed, 50 otherwise.
 	 */
 	private Point computeScrollCoeff(KeyEvent event) {
-		int coeff = (event.stateMask & SWT.SHIFT) == 0 ? 1 : 50;
+		int coeff = (event.stateMask & SWT.SHIFT) == 0 ? 1 : 10;
 		if(event.keyCode == SWT.ARROW_DOWN)
 			return new Point(0, coeff);
 		if(event.keyCode == SWT.ARROW_UP)