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.ViewModelModifiable;
  11 import net.mograsim.logic.ui.model.components.GUIComponent;
  12
  13 public class WireCrossPoint extends GUIComponent
  14 {
  15         private static final int CIRCLE_RADIUS = 1;
  16         private static final int CIRCLE_DIAM = CIRCLE_RADIUS * 2;
  17
  18         private final Pin pin;
  19         private final int logicWidth;
  20
  21         private final LogicObserver logicObs;
  22         private ReadEnd end;
  23
  24         public WireCrossPoint(ViewModelModifiable model, int logicWidth)
  25         {
  26                 super(model);
  27                 logicObs = (i) -> requestRedraw();
  28
  29                 this.logicWidth = logicWidth;
  30                 setSize(CIRCLE_DIAM, CIRCLE_DIAM);
  31                 addPin(this.pin = new Pin(this, logicWidth, CIRCLE_RADIUS, CIRCLE_RADIUS));
  32         }
  33
  34         public void moveCenterTo(double x, double y)
  35         {
  36                 moveTo(x - CIRCLE_RADIUS, y - CIRCLE_RADIUS);
  37         }
  38
  39         @Override
  40         public void render(GeneralGC gc, Rectangle visibleRegion)
  41         {
  42                 Rectangle bounds = getBounds();
  43                 ColorHelper.executeWithDifferentBackground(gc, BitVectorFormatter.formatAsColor(end),
  44                                 () -> gc.fillOval(bounds.x, bounds.y, CIRCLE_DIAM, CIRCLE_DIAM));
  45         }
  46
  47         public void setLogicModelBinding(ReadEnd end)
  48         {
  49                 deregisterLogicObs(this.end);
  50                 this.end = end;
  51                 registerLogicObs(end);
  52         }
  53
  54         private void registerLogicObs(LogicObservable observable)
  55         {
  56                 if (observable != null)
  57                         observable.registerObserver(logicObs);
  58         }
  59
  60         private void deregisterLogicObs(LogicObservable observable)
  61         {
  62                 if (observable != null)
  63                         observable.deregisterObserver(logicObs);
  64         }
  65
  66         public int getLogicWidth()
  67         {
  68                 return logicWidth;
  69         }
  70
  71         public Pin getPin()
  72         {
  73                 return pin;
  74         }
  75 }