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.ViewModel;\r
  14 \r
  15 public class GUIWire\r
  16 {\r
  17         private final ViewModel 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(ViewModel model, Pin pin1, Pin pin2, Point... path)\r
  29         {\r
  30                 logicObs = (i) -> callRedrawListeners();\r
  31                 this.model = model;\r
  32                 this.logicWidth = pin1.logicWidth;\r
  33                 if (pin2.logicWidth != pin1.logicWidth)\r
  34                         throw new IllegalArgumentException("Can't connect pins of different logic width");\r
  35                 this.path = new double[path.length * 2 + 4];\r
  36                 for (int srcI = 0, dstI = 2; srcI < path.length; srcI++, dstI += 2)\r
  37                 {\r
  38                         this.path[dstI + 0] = path[srcI].x;\r
  39                         this.path[dstI + 1] = path[srcI].y;\r
  40                 }\r
  41 \r
  42                 this.pin1 = pin1;\r
  43                 this.pin2 = pin2;\r
  44 \r
  45                 redrawListeners = new ArrayList<>();\r
  46 \r
  47                 pin1.addPinMovedListener(p -> pin1Moved());\r
  48                 pin2.addPinMovedListener(p -> pin2Moved());\r
  49                 pin1Moved();\r
  50                 pin2Moved();\r
  51 \r
  52                 model.wireCreated(this);\r
  53         }\r
  54 \r
  55         private void pin1Moved()\r
  56         {\r
  57                 Point pos = pin1.getPos();\r
  58                 this.path[0] = pos.x;\r
  59                 this.path[1] = pos.y;\r
  60                 callRedrawListeners();\r
  61         }\r
  62 \r
  63         private void pin2Moved()\r
  64         {\r
  65                 Point pos = pin2.getPos();\r
  66                 this.path[this.path.length - 2] = pos.x;\r
  67                 this.path[this.path.length - 1] = pos.y;\r
  68                 callRedrawListeners();\r
  69         }\r
  70 \r
  71         public void destroy()\r
  72         {\r
  73                 model.wireDestroyed(this);\r
  74         }\r
  75 \r
  76         public void render(GeneralGC gc)\r
  77         {\r
  78                 ColorHelper.executeWithDifferentForeground(gc, BitVectorFormatter.formatAsColor(end), () -> gc.drawPolyline(path));\r
  79         }\r
  80 \r
  81         public void setLogicModelBinding(ReadEnd end)\r
  82         {\r
  83                 deregisterLogicObs(this.end);\r
  84                 this.end = end;\r
  85                 registerLogicObs(end);\r
  86         }\r
  87 \r
  88         private void registerLogicObs(LogicObservable observable)\r
  89         {\r
  90                 if (observable != null)\r
  91                         observable.registerObserver(logicObs);\r
  92         }\r
  93 \r
  94         private void deregisterLogicObs(LogicObservable observable)\r
  95         {\r
  96                 if (observable != null)\r
  97                         observable.deregisterObserver(logicObs);\r
  98         }\r
  99 \r
 100         public Pin getPin1()\r
 101         {\r
 102                 return pin1;\r
 103         }\r
 104 \r
 105         public Pin getPin2()\r
 106         {\r
 107                 return pin2;\r
 108         }\r
 109 \r
 110         // @formatter:off\r
 111         public void addRedrawListener   (Runnable listener) {redrawListeners         .add   (listener);}\r
 112 \r
 113         public void removeRedrawListener(Runnable listener) {redrawListeners         .remove(listener);}\r
 114 \r
 115         private void callRedrawListeners() {redrawListeners.forEach(l -> l.run());}\r
 116         // @formatter:on\r
 117 \r
 118 }