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

   1 package net.mograsim.logic.ui.model.components;
   2
   3 import org.eclipse.swt.graphics.Color;
   4
   5 import net.haspamelodica.swt.helper.gcs.GeneralGC;
   6 import net.haspamelodica.swt.helper.swtobjectwrappers.Font;
   7 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
   8 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
   9 import net.mograsim.logic.core.LogicObservable;
  10 import net.mograsim.logic.core.LogicObserver;
  11 import net.mograsim.logic.core.components.BitDisplay;
  12 import net.mograsim.logic.core.types.BitVectorFormatter;
  13 import net.mograsim.logic.ui.model.ViewModelModifiable;
  14 import net.mograsim.logic.ui.model.wires.Pin;
  15 import net.mograsim.logic.ui.modeladapter.ViewLogicModelAdapter;
  16 import net.mograsim.logic.ui.modeladapter.componentadapters.BitDisplayAdapter;
  17 import net.mograsim.preferences.Preferences;
  18
  19 public class GUIBitDisplay extends GUIComponent
  20 {
  21         private static final double width = 20;
  22         private static final double height = 15;
  23         private static final double fontHeight = 5;
  24
  25         private final Pin inputPin;
  26
  27         private final LogicObserver logicObs;
  28         private BitDisplay bitDisplay;
  29
  30         public GUIBitDisplay(ViewModelModifiable model)
  31         {
  32                 super(model);
  33                 logicObs = (i) -> requestRedraw();
  34
  35                 setSize(width, height);
  36                 addPin(this.inputPin = new Pin(this, "", 1, 0, height / 2));
  37         }
  38
  39         @Override
  40         public void render(GeneralGC gc, Rectangle visibleRegion)
  41         {
  42                 Color foreground = Preferences.current().getColor("net.mograsim.logic.ui.color.foreground");
  43                 if (foreground != null)
  44                         gc.setForeground(foreground);
  45                 gc.drawRectangle(getBounds());
  46                 String label = bitDisplay == null ? BitVectorFormatter.formatAsString(null)
  47                                 : BitVectorFormatter.formatAsString(bitDisplay.getDisplayedValue());
  48                 Font oldFont = gc.getFont();
  49                 Font labelFont = new Font(oldFont.getName(), fontHeight, oldFont.getStyle());
  50                 gc.setFont(labelFont);
  51                 Point textExtent = gc.textExtent(label);
  52                 Color textColor = Preferences.current().getColor("net.mograsim.logic.ui.color.text");
  53                 if (textColor != null)
  54                         gc.setForeground(textColor);
  55                 gc.drawText(label, getPosX() + (width - textExtent.x) / 2, getPosY() + (height - textExtent.y) / 2, true);
  56                 gc.setFont(oldFont);
  57         }
  58
  59         public void setLogicModelBinding(BitDisplay bitDisplay)
  60         {
  61                 deregisterLogicObs(this.bitDisplay);
  62                 this.bitDisplay = bitDisplay;
  63                 registerLogicObs(bitDisplay);
  64         }
  65
  66         private void registerLogicObs(LogicObservable observable)
  67         {
  68                 if (observable != null)
  69                         observable.registerObserver(logicObs);
  70         }
  71
  72         private void deregisterLogicObs(LogicObservable observable)
  73         {
  74                 if (observable != null)
  75                         observable.deregisterObserver(logicObs);
  76         }
  77
  78         public BitDisplay getBitDisplay()
  79         {
  80                 return bitDisplay;
  81         }
  82
  83         public Pin getInputPin()
  84         {
  85                 return inputPin;
  86         }
  87
  88         static
  89         {
  90                 ViewLogicModelAdapter.addComponentAdapter(new BitDisplayAdapter());
  91         }
  92 }