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