show selection size on demand

removed scroll buttons in toolbox

diy-layout-creator --username bancika@gmail.com/DIYLC/src/org/diylc/common/EventType.java

@@ -48,10 +48,6 @@ public enum EventType {
 	 * object containing selection size (x = width, y = height). Size is
 	 * expressed in the default measure (cm for metric, inches for imperial).
 	 */
-	SELECTION_SIZE_CHANGED,
-	/**
-	 * Called when display needs to be repainted. No parameters are passed.
-	 */
 	REPAINT,
 	/**
 	 * Called when new component slot has been changed. The only parameter is

diy-layout-creator --username bancika@gmail.com/DIYLC/src/org/diylc/common/IPlugInPort.java

@@ -4,6 +4,7 @@ import java.awt.Cursor;
 import java.awt.Dimension;
 import java.awt.Graphics2D;
 import java.awt.Point;
+import java.awt.geom.Point2D;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -28,7 +29,7 @@ import com.diyfever.gui.update.VersionNumber;
  * @see EventType
  */
 public interface IPlugInPort {
-	
+
 	public static final String CHECK_BOX_MENU_ITEM = "org.diylc.checkBoxMenuItem";
 
 	/**
@@ -302,6 +303,12 @@ public interface IPlugInPort {
 	 * Ungroups all selected components.
 	 */
 	void ungroupSelectedComponents();
-	
+
 	void setLayerLocked(int layerZOrder, boolean locked);
+
+	/**
+	 * @return selection size expressed in either inches or centimeters, based
+	 *         on the user preference.
+	 */
+	Point2D calculateSelectionDimension();
 }