+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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