net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/wires/GUIWire.java

   1 package net.mograsim.logic.ui.model.wires;
   2
   3 import java.util.ArrayList;
   4 import java.util.Arrays;
   5 import java.util.List;
   6
   7 import net.haspamelodica.swt.helper.gcs.GeneralGC;
   8 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
   9 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
  10 import net.mograsim.logic.core.LogicObservable;
  11 import net.mograsim.logic.core.LogicObserver;
  12 import net.mograsim.logic.core.types.BitVectorFormatter;
  13 import net.mograsim.logic.core.wires.Wire.ReadEnd;
  14 import net.mograsim.logic.ui.ColorHelper;
  15 import net.mograsim.logic.ui.model.ViewModelModifiable;
  16
  17 public class GUIWire
  18 {
  19         private final ViewModelModifiable model;
  20         public final int logicWidth;
  21         private Pin pin1;
  22         private Pin pin2;
  23         private Point[] path;
  24         private final Rectangle bounds;
  25         private double[] effectivePath;
  26
  27         private final List<Runnable> redrawListeners;
  28
  29         private final LogicObserver logicObs;
  30         private ReadEnd end;
  31
  32         public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, WireCrossPoint pin2)
  33         {
  34                 this(model, pin1, pin2, (Point[]) null);
  35         }
  36
  37         public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, Pin pin2)
  38         {
  39                 this(model, pin1, pin2, (Point[]) null);
  40         }
  41
  42         public GUIWire(ViewModelModifiable model, Pin pin1, WireCrossPoint pin2)
  43         {
  44                 this(model, pin1, pin2, (Point[]) null);
  45         }
  46
  47         public GUIWire(ViewModelModifiable model, Pin pin1, Pin pin2)
  48         {
  49                 this(model, pin1, pin2, (Point[]) null);
  50         }
  51
  52         public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, WireCrossPoint pin2, Point... path)
  53         {
  54                 this(model, pin1.getPin(), pin2.getPin(), path);
  55         }
  56
  57         public GUIWire(ViewModelModifiable model, WireCrossPoint pin1, Pin pin2, Point... path)
  58         {
  59                 this(model, pin1.getPin(), pin2, path);
  60         }
  61
  62         public GUIWire(ViewModelModifiable model, Pin pin1, WireCrossPoint pin2, Point... path)
  63         {
  64                 this(model, pin1, pin2.getPin(), path);
  65         }
  66
  67         public GUIWire(ViewModelModifiable model, Pin pin1, Pin pin2, Point... path)
  68         {
  69                 logicObs = (i) -> callRedrawListeners();
  70                 this.model = model;
  71                 this.logicWidth = pin1.logicWidth;
  72                 if (pin2.logicWidth != pin1.logicWidth)
  73                         throw new IllegalArgumentException("Can't connect pins of different logic width");
  74
  75                 this.pin1 = pin1;
  76                 this.pin2 = pin2;
  77
  78                 this.path = path == null ? null : Arrays.copyOf(path, path.length);
  79                 this.bounds = new Rectangle(0, 0, -1, -1);
  80
  81                 redrawListeners = new ArrayList<>();
  82
  83                 pin1.addPinMovedListener(p -> pin1Moved());
  84                 pin2.addPinMovedListener(p -> pin2Moved());
  85
  86                 recalculateEffectivePath();
  87
  88                 model.wireCreated(this);
  89         }
  90
  91         private void recalculateEffectivePath()
  92         {
  93                 Point pos1 = pin1.getPos(), pos2 = pin2.getPos();
  94
  95                 double boundsX1 = Math.min(pos1.x, pos2.x);
  96                 double boundsY1 = Math.min(pos1.y, pos2.y);
  97                 double boundsX2 = Math.max(pos1.x, pos2.x);
  98                 double boundsY2 = Math.max(pos1.y, pos2.y);
  99
 100                 if (path == null)
 101                         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 };
 102                 else
 103                 {
 104                         effectivePath = new double[path.length * 2 + 4];
 105                         effectivePath[0] = pos1.x;
 106                         effectivePath[1] = pos1.y;
 107                         for (int srcI = 0, dstI = 2; srcI < path.length; srcI++, dstI += 2)
 108                         {
 109                                 double pathX = path[srcI].x;
 110                                 double pathY = path[srcI].y;
 111                                 effectivePath[dstI + 0] = pathX;
 112                                 effectivePath[dstI + 1] = pathY;
 113                                 if (pathX < boundsX1)
 114                                         boundsX1 = pathX;
 115                                 if (pathX > boundsX2)
 116                                         boundsX2 = pathX;
 117                                 if (pathY < boundsY1)
 118                                         boundsY1 = pathY;
 119                                 if (pathY > boundsY2)
 120                                         boundsY2 = pathY;
 121                         }
 122                         effectivePath[effectivePath.length - 2] = pos2.x;
 123                         effectivePath[effectivePath.length - 1] = pos2.y;
 124                 }
 125
 126                 bounds.x = boundsX1;
 127                 bounds.y = boundsY1;
 128                 bounds.width = boundsX2 - boundsX1;
 129                 bounds.height = boundsY2 - boundsY1;
 130         }
 131
 132         private void pin1Moved()
 133         {
 134                 recalculateEffectivePath();
 135                 callRedrawListeners();
 136         }
 137
 138         private void pin2Moved()
 139         {
 140                 recalculateEffectivePath();
 141                 callRedrawListeners();
 142         }
 143
 144         public void destroy()
 145         {
 146                 model.wireDestroyed(this);
 147         }
 148
 149         public Rectangle getBounds()
 150         {
 151                 return new Rectangle(bounds.x, bounds.y, bounds.width, bounds.height);
 152         }
 153
 154         public void render(GeneralGC gc)
 155         {
 156                 ColorHelper.executeWithDifferentForeground(gc, BitVectorFormatter.formatAsColor(end), () -> gc.drawPolyline(effectivePath));
 157         }
 158
 159         public void setLogicModelBinding(ReadEnd end)
 160         {
 161                 deregisterLogicObs(this.end);
 162                 this.end = end;
 163                 registerLogicObs(end);
 164         }
 165
 166         private void registerLogicObs(LogicObservable observable)
 167         {
 168                 if (observable != null)
 169                         observable.registerObserver(logicObs);
 170         }
 171
 172         private void deregisterLogicObs(LogicObservable observable)
 173         {
 174                 if (observable != null)
 175                         observable.deregisterObserver(logicObs);
 176         }
 177
 178         public Pin getPin1()
 179         {
 180                 return pin1;
 181         }
 182
 183         public Pin getPin2()
 184         {
 185                 return pin2;
 186         }
 187
 188         // @formatter:off
 189         public void addRedrawListener   (Runnable listener) {redrawListeners         .add   (listener);}
 190
 191         public void removeRedrawListener(Runnable listener) {redrawListeners         .remove(listener);}
 192
 193         private void callRedrawListeners() {redrawListeners.forEach(l -> l.run());}
 194         // @formatter:on
 195
 196 }