net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/GUIManualSwitch.java

   1 package net.mograsim.logic.ui.model.components;
   2
   3 import net.haspamelodica.swt.helper.gcs.GeneralGC;
   4 import net.haspamelodica.swt.helper.swtobjectwrappers.Font;
   5 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
   6 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
   7 import net.mograsim.logic.core.LogicObservable;
   8 import net.mograsim.logic.core.LogicObserver;
   9 import net.mograsim.logic.core.components.ManualSwitch;
  10 import net.mograsim.logic.core.types.BitVectorFormatter;
  11 import net.mograsim.logic.core.wires.Wire.ReadEnd;
  12 import net.mograsim.logic.ui.model.ViewModelModifiable;
  13 import net.mograsim.logic.ui.model.wires.Pin;
  14
  15 public class GUIManualSwitch extends GUIComponent
  16 {
  17         private static final double width = 20;
  18         private static final double height = 15;
  19         private static final double fontHeight = 5;
  20
  21         private final Pin outputPin;
  22
  23         private final LogicObserver logicObs;
  24         private ManualSwitch logicSwitch;
  25         private ReadEnd end;
  26
  27         public GUIManualSwitch(ViewModelModifiable model)
  28         {
  29                 super(model);
  30                 logicObs = (i) -> requestRedraw();
  31
  32                 setSize(width, height);
  33                 addPin(this.outputPin = new Pin(this, 1, width, height / 2));
  34         }
  35
  36         @Override
  37         public void render(GeneralGC gc, Rectangle visibleRegion)
  38         {
  39                 double posX = getBounds().x;
  40                 double posY = getBounds().y;
  41
  42                 // TODO maybe draw switch state too?
  43                 gc.drawRectangle(posX, posY, width, height);
  44                 String label = BitVectorFormatter.formatValueAsString(end);
  45                 Font oldFont = gc.getFont();
  46                 Font labelFont = new Font(oldFont.getName(), fontHeight, oldFont.getStyle());
  47                 gc.setFont(labelFont);
  48                 Point textExtent = gc.textExtent(label);
  49                 gc.drawText(label, posX + (width - textExtent.x) / 2, posY + (height - textExtent.y) / 2, true);
  50                 gc.setFont(oldFont);
  51         }
  52
  53         public void setLogicModelBinding(ManualSwitch logicSwitch, ReadEnd end)
  54         {
  55                 deregisterLogicObs(this.end);
  56                 deregisterLogicObs(this.logicSwitch);
  57                 this.logicSwitch = logicSwitch;
  58                 this.end = end;
  59                 registerLogicObs(end);
  60                 registerLogicObs(logicSwitch);
  61         }
  62
  63         private void registerLogicObs(LogicObservable observable)
  64         {
  65                 if (observable != null)
  66                         observable.registerObserver(logicObs);
  67         }
  68
  69         private void deregisterLogicObs(LogicObservable observable)
  70         {
  71                 if (observable != null)
  72                         observable.deregisterObserver(logicObs);
  73         }
  74
  75         @Override
  76         public boolean clicked(double x, double y)
  77         {
  78                 if (logicSwitch != null)
  79                         logicSwitch.toggle();
  80                 return true;
  81         }
  82
  83         public Pin getOutputPin()
  84         {
  85                 return outputPin;
  86         }
  87 }