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

   1 package net.mograsim.logic.ui.model.wires;
   2
   3 import net.haspamelodica.swt.helper.gcs.GeneralGC;
   4 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
   5 import net.mograsim.logic.core.LogicObservable;
   6 import net.mograsim.logic.core.LogicObserver;
   7 import net.mograsim.logic.core.types.BitVectorFormatter;
   8 import net.mograsim.logic.core.wires.Wire.ReadEnd;
   9 import net.mograsim.logic.ui.ColorHelper;
  10 import net.mograsim.logic.ui.model.ViewModel;
  11 import net.mograsim.logic.ui.model.components.GUIComponent;
  12
  13 public class WireCrossPoint extends GUIComponent
  14 {
  15         private final Pin pin;
  16         private final int logicWidth;
  17
  18         private final LogicObserver logicObs;
  19         private ReadEnd end;
  20
  21         public WireCrossPoint(ViewModel model, int logicWidth)
  22         {
  23                 super(model);
  24                 logicObs = (i) -> requestRedraw();
  25
  26                 this.logicWidth = logicWidth;
  27                 setSize(0, 0);
  28                 addPin(this.pin = new Pin(this, logicWidth, 0, 0));
  29         }
  30
  31         @Override
  32         public void render(GeneralGC gc, Rectangle visibleRegion)
  33         {
  34                 Rectangle bounds = getBounds();
  35                 ColorHelper.executeWithDifferentBackground(gc, BitVectorFormatter.formatAsColor(end),
  36                                 () -> gc.fillOval(bounds.x - 1, bounds.y - 1, 2, 2));
  37         }
  38
  39         public void setLogicModelBinding(ReadEnd end)
  40         {
  41                 deregisterLogicObs(this.end);
  42                 this.end = end;
  43                 registerLogicObs(end);
  44         }
  45
  46         private void registerLogicObs(LogicObservable observable)
  47         {
  48                 if (observable != null)
  49                         observable.registerObserver(logicObs);
  50         }
  51
  52         private void deregisterLogicObs(LogicObservable observable)
  53         {
  54                 if (observable != null)
  55                         observable.deregisterObserver(logicObs);
  56         }
  57
  58         public int getLogicWidth()
  59         {
  60                 return logicWidth;
  61         }
  62
  63         public Pin getPin()
  64         {
  65                 return pin;
  66         }
  67 }