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

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