better default label position on schematic symbols

diylc/diylc-library/src/org/diylc/components/AbstractLeadedComponent.java

@@ -98,6 +98,8 @@ public abstract class AbstractLeadedComponent<T> extends AbstractTransparentComp
     } catch (NullPointerException e) {
       // This will happen if components do not have any shape.
     }
+    if (newPoints != null)
+      newPoints[2] = calculateLabelPosition(newPoints[0], newPoints[1]);
   }
 
   protected boolean IsCopperArea() {

diylc/diylc-library/src/org/diylc/components/AbstractSchematicLeadedSymbol.java

@@ -23,6 +23,7 @@ package org.diylc.components;
 
 import java.awt.Color;
 import java.awt.FontMetrics;
+import java.awt.Point;
 import java.awt.geom.Rectangle2D;
 
 import org.diylc.common.LabelPosition;
@@ -70,6 +71,15 @@ public abstract class AbstractSchematicLeadedSymbol<T> extends AbstractLeadedCom
     }
   }
   
+  @Override
+  protected Point calculateLabelPosition(Point point1, Point point2) {
+    double x = (point1.x + point2.x) / 2.0;
+    double y = (point1.y + point2.y) / 2.0;
+    double theta = Math.atan2(point2.y - point1.y, point2.x - point2.x) - Math.PI / 2;
+    double r = width.convertToPixels() / 2 + LABEL_FONT.getSize() / 2;
+    return new Point((int) (x + Math.cos(theta) * r), (int) (y + Math.sin(theta) * r));
+  }
+
   @EditableProperty(name = "Label Position")
   public LabelPosition getLabelPosition() {
     return labelPosition;