Implemented GUIBitDisplay

[Mograsim.git] / net.mograsim.logic.ui / src / net / mograsim / logic / ui / model / components / GUIBitDisplay.java

diff --git a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/GUIBitDisplay.java b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/GUIBitDisplay.java
new file mode 100644 (file)
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--- /dev/null
+++ b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/GUIBitDisplay.java
@@ -0,0 +1,75 @@
+package net.mograsim.logic.ui.model.components;
+
+import net.haspamelodica.swt.helper.gcs.GeneralGC;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Font;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
+import net.mograsim.logic.core.LogicObservable;
+import net.mograsim.logic.core.LogicObserver;
+import net.mograsim.logic.core.components.BitDisplay;
+import net.mograsim.logic.core.types.BitVectorFormatter;
+import net.mograsim.logic.ui.model.ViewModel;
+import net.mograsim.logic.ui.model.wires.Pin;
+
+public class GUIBitDisplay extends GUIComponent
+{
+       private static final double width = 20;
+       private static final double height = 15;
+       private static final double fontHeight = 5;
+
+       private final Pin inputPin;
+
+       private final LogicObserver logicObs;
+       private BitDisplay bitDisplay;
+
+       public GUIBitDisplay(ViewModel model)
+       {
+               super(model);
+               logicObs = (i) -> callComponentLookChangedListeners();
+
+               setSize(width, height);
+               addPin(this.inputPin = new Pin(this, 1, 0, height / 2));
+       }
+
+       @Override
+       public void render(GeneralGC gc, Rectangle visibleRegion)
+       {
+               double posX = getBounds().x;
+               double posY = getBounds().y;
+
+               // TODO maybe draw switch state too?
+               gc.drawRectangle(posX, posY, width, height);
+               String label = bitDisplay == null ? BitVectorFormatter.formatAsString(null)
+                               : BitVectorFormatter.formatAsString(bitDisplay.getDisplayedValue());
+               Font oldFont = gc.getFont();
+               Font labelFont = new Font(oldFont.getName(), fontHeight, oldFont.getStyle());
+               gc.setFont(labelFont);
+               Point textExtent = gc.textExtent(label);
+               gc.drawText(label, posX + (width - textExtent.x) / 2, posY + (height - textExtent.y) / 2, true);
+               gc.setFont(oldFont);
+       }
+
+       public void setLogicModelBinding(BitDisplay bitDisplay)
+       {
+               deregisterLogicObs(this.bitDisplay);
+               this.bitDisplay = bitDisplay;
+               registerLogicObs(bitDisplay);
+       }
+
+       private void registerLogicObs(LogicObservable observable)
+       {
+               if (observable != null)
+                       observable.registerObserver(logicObs);
+       }
+
+       private void deregisterLogicObs(LogicObservable observable)
+       {
+               if (observable != null)
+                       observable.deregisterObserver(logicObs);
+       }
+
+       public Pin getInputPin()
+       {
+               return inputPin;
+       }
+}
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