colored bus wires black

src/main/java/de/neemann/digital/draw/graphics/Style.java

@@ -63,6 +63,12 @@ public class Style {
      * used to draw the output dots
      */
     public static final Style WIRE_OUT = new Style(LINETHICK, true, Color.RED.darker());
+
+    /**
+     * used to draw the bus wires
+     */
+    public static final Style WIRE_BUS = NORMAL;
+
     /**
      * Filled style used to fill the splitter or the dark LEDs
      */
@@ -87,7 +93,7 @@ public class Style {
     /**
      * error color used for the circles to mark an element
      */
-    public static final Style ERROR = new Style(WIRETHICK, false, Color.RED.darker());
+    public static final Style ERROR = new Style(WIRETHICK, false, Color.RED);
 
     private final int thickness;
     private final boolean filled;
@@ -179,7 +185,8 @@ public class Style {
      * @return the style
      */
     public static Style getWireStyle(ObservableValue value) {
-        if (value == null || value.getBits() > 1) return WIRE;
+        if (value == null) return WIRE;
+        if (value.getBits()>1) return WIRE_BUS;
         if (value.isHighZ()) return WIRE_HIGHZ;
 
         if (value.getValueIgnoreBurn() == 1) return WIRE_HIGH;

src/main/java/de/neemann/digital/gui/Main.java

@@ -905,6 +905,9 @@ public final class Main extends JFrame implements ClosingWindowListener.ConfirmS
                 doStep.setEnabled(false);
                 stoppedState.getAction().setEnabled(false);
                 runToBreakAction.setEnabled(false);
+                // keep errors
+                if (circuitComponent.getHighLightStyle() != Style.ERROR)
+                    circuitComponent.removeHighLighted();
             }
 
         });
@@ -917,11 +920,6 @@ public final class Main extends JFrame implements ClosingWindowListener.ConfirmS
                 if (createAndStartModel(false, ModelEvent.MICROSTEP, null))
                     circuitComponent.setManualChangeObserver(new MicroStepObserver(model));
             }
-
-            @Override
-            public void leave() {
-                circuitComponent.removeHighLighted();
-            }
         });
     }
 

src/main/java/de/neemann/digital/gui/components/CircuitComponent.java

@@ -571,6 +571,12 @@ public class CircuitComponent extends JComponent implements Circuit.ChangedListe
         this.highLightStyle = highLightStyle;
     }
 
+    /**
+     * @return the actual highlighted style
+     */
+    public Style getHighLightStyle() {
+        return highLightStyle;
+    }
 
     /**
      * Adds the given element to insert to the circuit