X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=net.mograsim.logic.ui%2Fsrc%2Fnet%2Fmograsim%2Flogic%2Fui%2Fmodel%2Fwires%2FWireCrossPoint.java;h=de5ba4ac5026bb1eeedfec536434acbd5ddf64da;hb=67c7e16eac6ef555f7ebe0cbe6048598d7f1187e;hp=46262808fb76821df537e638b26e90c65e5d2a2c;hpb=e7193d1fb16edc79e9cc3d8adcfb71caecd8463b;p=Mograsim.git

diff --git a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/wires/WireCrossPoint.java b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/wires/WireCrossPoint.java
index 46262808..de5ba4ac 100644
--- a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/wires/WireCrossPoint.java
+++ b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/wires/WireCrossPoint.java
@@ -1,67 +1,115 @@
 package net.mograsim.logic.ui.model.wires;
 
+import java.util.Map;
+
 import net.haspamelodica.swt.helper.gcs.GeneralGC;
 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
-import net.mograsim.logic.core.LogicObservable;
 import net.mograsim.logic.core.LogicObserver;
 import net.mograsim.logic.core.types.BitVectorFormatter;
 import net.mograsim.logic.core.wires.Wire.ReadEnd;
 import net.mograsim.logic.ui.ColorHelper;
-import net.mograsim.logic.ui.model.ViewModel;
+import net.mograsim.logic.ui.model.ViewModelModifiable;
 import net.mograsim.logic.ui.model.components.GUIComponent;
+import net.mograsim.logic.ui.model.components.SimpleRectangularGUIGate;
 
+/**
+ * A {@link GUIComponent} with only one pin. Is used to create wires connecting more than two pins. <br>
+ * Example: There are three pins <code>P1</code>, <code>P2</code>, <code>P3</code> that need to be connected. Solution: Create a
+ * WireCrossPoint (<code>WCP</code>) and create the GUIWires <code>P1</code>-<code>WCP</code>, <code>P2</code>-<code>WCP</code>,
+ * <code>P3</code>-<code>WCP</code>.<br>
+ * Cross points are drawn as circles. The pin of cross points is in the center of this circle.
+ * 
+ * @author Daniel Kirschten
+ */
 public class WireCrossPoint extends GUIComponent
 {
+	private static final int CIRCLE_RADIUS = 1;
+	private static final int CIRCLE_DIAM = CIRCLE_RADIUS * 2;
+
+	/**
+	 * The (single) pin of this cross point.
+	 */
 	private final Pin pin;
-	private final int logicWidth;
 
+	/**
+	 * A {@link LogicObserver} calling {@link #requestRedraw()}.
+	 */
 	private final LogicObserver logicObs;
+	/**
+	 * The {@link ReadEnd} currently bound to this cross point.
+	 */
 	private ReadEnd end;
 
-	public WireCrossPoint(ViewModel model, int logicWidth)
+	// creation and destruction
+
+	public WireCrossPoint(ViewModelModifiable model, int logicWidth)
 	{
 		super(model);
 		logicObs = (i) -> requestRedraw();
 
-		this.logicWidth = logicWidth;
-		setSize(0, 0);
-		addPin(this.pin = new Pin(this, logicWidth, 0, 0));
+		setSize(CIRCLE_DIAM, CIRCLE_DIAM);
+		addPin(this.pin = new Pin(this, "", logicWidth, CIRCLE_RADIUS, CIRCLE_RADIUS));
 	}
 
-	@Override
-	public void render(GeneralGC gc, Rectangle visibleRegion)
+	// pins
+
+	public Pin getPin()
 	{
-		Rectangle bounds = getBounds();
-		ColorHelper.executeWithDifferentBackground(gc, BitVectorFormatter.formatAsColor(end),
-				() -> gc.fillOval(bounds.x - 1, bounds.y - 1, 2, 2));
+		return pin;
 	}
 
-	public void setLogicModelBinding(ReadEnd end)
+	// "graphical" operations
+
+	/**
+	 * Moves the center (and therefore the pin) of this {@link WireCrossPoint} to the given location.
+	 * 
+	 * @author Daniel Kirschten
+	 */
+	public void moveCenterTo(double x, double y)
 	{
-		deregisterLogicObs(this.end);
-		this.end = end;
-		registerLogicObs(end);
+		moveTo(x - CIRCLE_RADIUS, y - CIRCLE_RADIUS);
 	}
 
-	private void registerLogicObs(LogicObservable observable)
+	@Override
+	public void render(GeneralGC gc, Rectangle visibleRegion)
 	{
-		if (observable != null)
-			observable.registerObserver(logicObs);
+		ColorHelper.executeWithDifferentBackground(gc, BitVectorFormatter.formatAsColor(end),
+				() -> gc.fillOval(getPosX(), getPosY(), CIRCLE_DIAM, CIRCLE_DIAM));
 	}
 
-	private void deregisterLogicObs(LogicObservable observable)
+	// logic model binding
+
+	/**
+	 * Binds this {@link WireCrossPoint} to the given {@link ReadEnd}: The color of this {@link WireCrossPoint} will now depend on the state
+	 * of the given {@link ReadEnd}, and further changes of the given {@link ReadEnd} will result in readrawListeners being called.<br>
+	 * The argument can be null, in which case the old binding is stopped.
+	 * 
+	 * @author Daniel Kirschten
+	 */
+	public void setLogicModelBinding(ReadEnd end)
 	{
-		if (observable != null)
-			observable.deregisterObserver(logicObs);
+		if (this.end != null)
+			this.end.deregisterObserver(logicObs);
+		this.end = end;
+		if (end != null)
+			end.registerObserver(logicObs);
 	}
 
-	public int getLogicWidth()
+	/**
+	 * Returns whether this {@link WireCrossPoint} has a logic model binding or not.
+	 */
+	public boolean hasLogicModelBinding()
 	{
-		return logicWidth;
+		return end != null;
 	}
 
-	public Pin getPin()
+	// serializing
+
+	@Override
+	public Map<String, Object> getInstantiationParameters()
 	{
-		return pin;
+		Map<String, Object> m = super.getInstantiationParameters();
+		m.put(SimpleRectangularGUIGate.kLogicWidth, pin.logicWidth);
+		return m;
 	}
 }
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