X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=net.mograsim.logic.ui%2Fsrc%2Fnet%2Fmograsim%2Flogic%2Fui%2Fmodel%2Fcomponents%2FSubmodelComponent.java;h=4b67650b9e6c037308801537b9eb752a5668c69f;hb=4c590b82bc039bec5669e8cbb40703057274ab8c;hp=9b0e41a3599d5ba7f11bc607f2492ab9edaed589;hpb=95d72ebf4ebc8b9aca649d3e604709fa9daaca24;p=Mograsim.git

diff --git a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java
index 9b0e41a3..4b67650b 100644
--- a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java
+++ b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/SubmodelComponent.java
@@ -8,6 +8,7 @@ import java.util.Map.Entry;
 import net.haspamelodica.swt.helper.gcs.GCDefaultConfig;
 import net.haspamelodica.swt.helper.gcs.GeneralGC;
 import net.haspamelodica.swt.helper.gcs.TranslatedGC;
+import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
 import net.mograsim.logic.ui.LogicUIRenderer;
 import net.mograsim.logic.ui.model.ViewModel;
@@ -24,10 +25,13 @@ public class SubmodelComponent extends GUIComponent
 	private final Map<Pin, Pin> supermodelPinsPerSubmodelPinUnmodifiable;
 	private final SubmodelInterface submodelInterface;
 
+	private final String label;
 	private double submodelScale;
+	private double maxVisibleRegionFillRatioForAlpha0;
+	private double minVisibleRegionFillRatioForAlpha1;
 	private final LogicUIRenderer renderer;
 
-	public SubmodelComponent(ViewModelModifiable model)
+	public SubmodelComponent(ViewModelModifiable model, String label)
 	{
 		super(model);
 		this.submodelModifiable = new ViewModelModifiable();
@@ -38,7 +42,10 @@ public class SubmodelComponent extends GUIComponent
 		this.supermodelPinsPerSubmodelPinUnmodifiable = Collections.unmodifiableMap(supermodelPinsPerSubmodelPin);
 		this.submodelInterface = new SubmodelInterface(submodelModifiable);
 
+		this.label = label;
 		this.submodelScale = 1;
+		this.maxVisibleRegionFillRatioForAlpha0 = 0.1;
+		this.minVisibleRegionFillRatioForAlpha1 = 0.8;
 		this.renderer = new LogicUIRenderer(submodelModifiable);
 
 		submodelModifiable.addRedrawListener(this::requestRedraw);
@@ -134,12 +141,26 @@ public class SubmodelComponent extends GUIComponent
 		GCDefaultConfig conf = new GCDefaultConfig(gc);
 		TranslatedGC tgc = new TranslatedGC(gc, posX, posY, submodelScale, true);
 		conf.reset(tgc);
+		double visibleRegionFillRatio = Math.max(getBounds().width / visibleRegion.width, getBounds().height / visibleRegion.height);
+		double alphaFactor = map(visibleRegionFillRatio, maxVisibleRegionFillRatioForAlpha0, minVisibleRegionFillRatioForAlpha1, 0, 1);
+		alphaFactor = Math.max(0, Math.min(1, alphaFactor));
+		// we need to take the old alpha into account to support nested submodules better.
+		int oldAlpha = gc.getAlpha();
+		gc.setAlpha(Math.max(0, Math.min(255, (int) (oldAlpha * alphaFactor))));
 		renderer.render(tgc, visibleRegion.translate(posX, posY, submodelScale));
+		gc.setAlpha(Math.max(0, Math.min(255, (int) (oldAlpha * (1 - alphaFactor)))));
+		Point textExtent = gc.textExtent(label);
+		gc.drawText(label, posX + (getBounds().width - textExtent.x) / 2, posY + (getBounds().height - textExtent.y) / 2, true);
 		conf.reset(gc);
 		// draw the "bounding box" after all other operations to make interface pins look better
 		gc.drawRectangle(getBounds());
 	}
 
+	private static double map(double val, double valMin, double valMax, double mapMin, double mapMax)
+	{
+		return mapMin + (val - valMin) * (mapMax - mapMin) / (valMax - valMin);
+	}
+
 	private static class PinMovable extends Pin
 	{
 		public PinMovable(GUIComponent component, int logicWidth, double relX, double relY)