--- /dev/null
+package net.mograsim.logic.model.model.wires;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.eclipse.swt.SWT;
+
+import net.haspamelodica.swt.helper.gcs.GeneralGC;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
+import net.mograsim.logic.core.LogicObserver;
+import net.mograsim.logic.core.types.BitVector;
+import net.mograsim.logic.core.types.BitVectorFormatter;
+import net.mograsim.logic.core.wires.Wire;
+import net.mograsim.logic.core.wires.Wire.ReadEnd;
+import net.mograsim.logic.model.model.ViewModelModifiable;
+import net.mograsim.preferences.ColorDefinition;
+import net.mograsim.preferences.ColorManager;
+
+/**
+ * A wire connecting exactly two {@link Pin}s.
+ *
+ * @author Daniel Kirschten
+ */
+public class GUIWire
+{
+ /**
+ * The model this wire is a part of.
+ */
+ private final ViewModelModifiable model;
+ /**
+ * The logical width of this wire. Is equal to the logical with of {@link #pin1} and {@link #pin2}.
+ */
+ public final int logicWidth;
+ /**
+ * The {@link Pin} on one side of this wire, usually the signal source.
+ */
+ private Pin pin1;
+ /**
+ * The {@link Pin} on one side of this wire, usually the signal target.
+ */
+ private Pin pin2;
+ /**
+ * The user-defined path between {@link #pin1} and {@link #pin2}.<br>
+ * Special cases: <code>null</code> means "choose an interpolation as fits", and an empty array means "direct connection without any
+ * interpolation".
+ */
+ private Point[] path;
+ /**
+ * The bounds of this wire, excluding line width (and line joins, if the line join is {@link SWT#JOIN_MITER})
+ */
+ private final Rectangle bounds;
+ /**
+ * The effective path of this wire, including automatic interpolation and the position of both {@link Pin}s. Is never null.
+ */
+ private double[] effectivePath;
+
+ private final List<Runnable> redrawListeners;
+
+ private final Set<PathChangedListener> pathChangedListeners;
+
+ /**
+ * A LogicObserver calling redrawListeners. Used for logic model bindings.
+ */
+ private final LogicObserver logicObs;
+ /**
+ * A ReadEnd of the logic wire this GUI wire currently is bound to.
+ */
+ private ReadEnd end;
+
+ // creation and destruction
+
+ /**
+ * Creates a new {@link GUIWire} with automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, WireCrossPoint pin2)
+ {
+ this(model, pin1, pin2, (Point[]) null);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} with automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, Pin pin2)
+ {
+ this(model, pin1, pin2, (Point[]) null);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} with automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, Pin pin1, WireCrossPoint pin2)
+ {
+ this(model, pin1, pin2, (Point[]) null);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} with automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, Pin pin1, Pin pin2)
+ {
+ this(model, pin1, pin2, (Point[]) null);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} without automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, WireCrossPoint pin2, Point... path)
+ {
+ this(model, pin1.getPin(), pin2.getPin(), path);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} without automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, Pin pin2, Point... path)
+ {
+ this(model, pin1.getPin(), pin2, path);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} without automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, Pin pin1, WireCrossPoint pin2, Point... path)
+ {
+ this(model, pin1, pin2.getPin(), path);
+ }
+
+ /**
+ * Creates a new {@link GUIWire} without automatic interpolation.
+ *
+ * @author Daniel Kirschten
+ */
+ public GUIWire(ViewModelModifiable model, Pin pin1, Pin pin2, Point... path)
+ {
+ pathChangedListeners = new HashSet<>();
+ logicObs = (i) -> callRedrawListeners();
+ this.model = model;
+ this.logicWidth = pin1.logicWidth;
+ if (pin2.logicWidth != pin1.logicWidth)
+ throw new IllegalArgumentException("Can't connect pins of different logic width");
+
+ this.pin1 = pin1;
+ this.pin2 = pin2;
+
+ this.path = path == null ? null : Arrays.copyOf(path, path.length);
+ this.bounds = new Rectangle(0, 0, -1, -1);
+
+ redrawListeners = new ArrayList<>();
+
+ pin1.addPinMovedListener(p -> pinMoved());
+ pin2.addPinMovedListener(p -> pinMoved());
+
+ recalculateEffectivePath();
+
+ model.wireCreated(this);
+ }
+
+ /**
+ * Destroys this wire. This method implicitly calls {@link ViewModelModifiable#wireDestroyed(GUIWire) wireDestroyed()} for the model
+ * this component is a part of.
+ *
+ * @author Daniel Kirschten
+ */
+ public void destroy()
+ {
+ model.wireDestroyed(this);
+ }
+
+ // pins
+
+ /**
+ * Returns the {@link Pin} on one side of this wire, usually the signal source.
+ *
+ * @author Daniel Kirschten
+ */
+ public Pin getPin1()
+ {
+ return pin1;
+ }
+
+ /**
+ * Returns the {@link Pin} on one side of this wire, usually the signal target.
+ *
+ * @author Daniel Kirschten
+ */
+ public Pin getPin2()
+ {
+ return pin2;
+ }
+
+ /**
+ * Called when {@link #pin1} or {@link #pin2} were moved.
+ *
+ * @author Daniel Kirschten
+ */
+ private void pinMoved()
+ {
+ recalculateEffectivePath();
+ callRedrawListeners();
+ }
+
+ // "graphical" operations
+
+ /**
+ * Recalculates {@link #effectivePath} "from scratch". Also updates {@link #bounds}.
+ *
+ * @author Daniel Kirschten
+ */
+ private void recalculateEffectivePath()
+ {
+ Point pos1 = pin1.getPos(), pos2 = pin2.getPos();
+
+ double boundsX1 = Math.min(pos1.x, pos2.x);
+ double boundsY1 = Math.min(pos1.y, pos2.y);
+ double boundsX2 = Math.max(pos1.x, pos2.x);
+ double boundsY2 = Math.max(pos1.y, pos2.y);
+
+ if (path == null)
+ effectivePath = new double[] { pos1.x, pos1.y, (pos1.x + pos2.x) / 2, pos1.y, (pos1.x + pos2.x) / 2, pos2.y, pos2.x, pos2.y };
+ else
+ {
+ effectivePath = new double[path.length * 2 + 4];
+ effectivePath[0] = pos1.x;
+ effectivePath[1] = pos1.y;
+ for (int srcI = 0, dstI = 2; srcI < path.length; srcI++, dstI += 2)
+ {
+ double pathX = path[srcI].x;
+ double pathY = path[srcI].y;
+ effectivePath[dstI + 0] = pathX;
+ effectivePath[dstI + 1] = pathY;
+ if (pathX < boundsX1)
+ boundsX1 = pathX;
+ if (pathX > boundsX2)
+ boundsX2 = pathX;
+ if (pathY < boundsY1)
+ boundsY1 = pathY;
+ if (pathY > boundsY2)
+ boundsY2 = pathY;
+ }
+ effectivePath[effectivePath.length - 2] = pos2.x;
+ effectivePath[effectivePath.length - 1] = pos2.y;
+ }
+
+ bounds.x = boundsX1;
+ bounds.y = boundsY1;
+ bounds.width = boundsX2 - boundsX1;
+ bounds.height = boundsY2 - boundsY1;
+ }
+
+ /**
+ * Returns the bounds of this wire, excluding line width (and line joins, if the line join is {@link SWT#JOIN_MITER})
+ *
+ * @author Daniel Kirschten
+ */
+ public Rectangle getBounds()
+ {
+ return new Rectangle(bounds.x, bounds.y, bounds.width, bounds.height);
+ }
+
+ /**
+ * Render this wire to the given gc, in absoulute coordinates.
+ *
+ * @author Daniel Kirschten
+ */
+ public void render(GeneralGC gc)
+ {
+ ColorDefinition wireColor = BitVectorFormatter.formatAsColor(end);
+ if (wireColor != null)
+ gc.setForeground(ColorManager.current().toColor(wireColor));
+ gc.drawPolyline(effectivePath);
+ }
+
+ /**
+ * The user-defined path between {@link #pin1} and {@link #pin2}. Note that this is not neccessarily equal to the effective path drawn
+ * in {@link #render(GeneralGC)}.<br>
+ * Special cases: <code>null</code> means "choose an interpolation as fits", and an empty array means "direct connection without any
+ * interpolation".
+ *
+ * @author Daniel Kirschten
+ */
+ public Point[] getPath()
+ {
+ return path == null ? null : path.clone();
+ }
+
+ // logic model binding
+
+ /**
+ * Binds this {@link GUIWire} to the given {@link ReadEnd}: The color of this {@link GUIWire} 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 (this.end != null)
+ this.end.deregisterObserver(logicObs);
+ this.end = end;
+ if (end != null)
+ end.registerObserver(logicObs);
+ }
+
+ /**
+ * Returns whether this {@link GUIWire} has a logic model binding or not.
+ *
+ * @author Daniel Kirschten
+ */
+ public boolean hasLogicModelBinding()
+ {
+ return end != null;
+ }
+
+ /**
+ * If this {@link GUIWire} has a logic model binding, delegates to {@link Wire#forceValues(BitVector)} for the {@link Wire}
+ * corresponding to this {@link GUIWire}.
+ *
+ * @author Daniel Kirschten
+ */
+ public void forceWireValues(BitVector values)
+ {
+ end.getWire().forceValues(values);
+ }
+
+ /**
+ * If this {@link GUIWire} has a logic model binding, delegates to {@link ReadEnd#getValues()} for the {@link ReadEnd} corresponding to
+ * this {@link GUIWire}.
+ *
+ * @author Daniel Kirschten
+ */
+ public BitVector getWireValues()
+ {
+ return end.getValues();
+ }
+
+ // listeners
+
+ // @formatter:off
+ public void addRedrawListener (Runnable listener) {redrawListeners .add (listener);}
+
+ public void removeRedrawListener(Runnable listener) {redrawListeners .remove(listener);}
+
+ private void callRedrawListeners() {redrawListeners.forEach(l -> l.run());}
+
+ public void addPathChangedListener(PathChangedListener l) { pathChangedListeners.add(l); }
+
+ public void removePathChangedListener(PathChangedListener l) { pathChangedListeners.remove(l); }
+
+ public void callPathChangedListeners(int diff) { pathChangedListeners.forEach(l -> l.pathChanged(this, diff)); }
+
+ @FunctionalInterface
+ public static interface PathChangedListener
+ {
+ /**
+ * Called whenever the {@link Wire}'s path changes
+ *
+ * @param wire The wire which had its path changed
+ * @param diff The length difference between before and after the path change.
+ */
+ public void pathChanged(GUIWire wire, int diff);
+ }
+ // @formatter:on
+
+ @Override
+ public String toString()
+ {
+ return "GUIWire [" + pin1 + "---" + pin2 + ", value=" + (end == null ? "null" : end.getValues()) + "]";
+ }
+
+ public void setPath(Point[] path)
+ {
+ int diff = (path == null ? 0 : path.length) - (this.path == null ? 0 : this.path.length);
+ this.path = path == null ? null : path.clone();
+ recalculateEffectivePath();
+ callPathChangedListeners(diff);
+ callRedrawListeners();
+ }
+
+ public void setPathPoint(Point p, int index)
+ {
+ path[index] = p;
+ recalculateEffectivePath();
+ callPathChangedListeners(0);
+ callRedrawListeners();
+ }
+
+ public void insertPathPoint(Point p, int index)
+ {
+ Point[] path = getPath();
+ if (path == null)
+ setPath(new Point[] { p });
+ else
+ {
+ Point[] newPath = new Point[path.length + 1];
+ System.arraycopy(path, 0, newPath, 0, index);
+ if (index < path.length)
+ System.arraycopy(path, index, newPath, index + 1, path.length - index);
+ newPath[index] = p;
+ setPath(newPath);
+ }
+ }
+
+ public void removePathPoint(int index)
+ {
+ Point[] path = getPath();
+ Point[] newPath = new Point[path.length - 1];
+ System.arraycopy(path, 0, newPath, 0, index);
+ if (index < path.length - 1)
+ System.arraycopy(path, index + 1, newPath, index, path.length - index - 1);
+ setPath(newPath);
+ }
+
+ /**
+ * @throws IndexOutOfBoundsException
+ */
+ public Point getPathPoint(int index)
+ {
+ return path[index];
+ }
+
+ public int getPathLength()
+ {
+ return path.length;
+ }
+
+ public double[] getEffectivePath()
+ {
+ return effectivePath.clone();
+ }
+}
\ No newline at end of file
projects / Mograsim.git / blobdiff