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

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