net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/GUIBitDisplay.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.BitDisplay;
  10 import net.mograsim.logic.core.types.BitVectorFormatter;
  11 import net.mograsim.logic.ui.model.ViewModelModifiable;
  12 import net.mograsim.logic.ui.model.wires.Pin;
  13 import net.mograsim.logic.ui.modeladapter.ViewLogicModelAdapter;
  14 import net.mograsim.logic.ui.modeladapter.componentadapters.BitDisplayAdapter;
  15
  16 public class GUIBitDisplay extends GUIComponent
  17 {
  18         private static final double width = 20;
  19         private static final double height = 15;
  20         private static final double fontHeight = 5;
  21
  22         private final Pin inputPin;
  23
  24         private final LogicObserver logicObs;
  25         private BitDisplay bitDisplay;
  26
  27         public GUIBitDisplay(ViewModelModifiable model)
  28         {
  29                 super(model);
  30                 logicObs = (i) -> requestRedraw();
  31
  32                 setSize(width, height);
  33                 addPin(this.inputPin = new Pin(this, "", 1, 0, height / 2));
  34         }
  35
  36         @Override
  37         public void render(GeneralGC gc, Rectangle visibleRegion)
  38         {
  39                 gc.drawRectangle(getBounds());
  40                 String label = bitDisplay == null ? BitVectorFormatter.formatAsString(null)
  41                                 : BitVectorFormatter.formatAsString(bitDisplay.getDisplayedValue());
  42                 Font oldFont = gc.getFont();
  43                 Font labelFont = new Font(oldFont.getName(), fontHeight, oldFont.getStyle());
  44                 gc.setFont(labelFont);
  45                 Point textExtent = gc.textExtent(label);
  46                 gc.drawText(label, getPosX() + (width - textExtent.x) / 2, getPosY() + (height - textExtent.y) / 2, true);
  47                 gc.setFont(oldFont);
  48         }
  49
  50         public void setLogicModelBinding(BitDisplay bitDisplay)
  51         {
  52                 deregisterLogicObs(this.bitDisplay);
  53                 this.bitDisplay = bitDisplay;
  54                 registerLogicObs(bitDisplay);
  55         }
  56
  57         private void registerLogicObs(LogicObservable observable)
  58         {
  59                 if (observable != null)
  60                         observable.registerObserver(logicObs);
  61         }
  62
  63         private void deregisterLogicObs(LogicObservable observable)
  64         {
  65                 if (observable != null)
  66                         observable.deregisterObserver(logicObs);
  67         }
  68
  69         public BitDisplay getBitDisplay()
  70         {
  71                 return bitDisplay;
  72         }
  73
  74         public Pin getInputPin()
  75         {
  76                 return inputPin;
  77         }
  78
  79         static
  80         {
  81                 ViewLogicModelAdapter.addComponentAdapter(new BitDisplayAdapter());
  82         }
  83 }