[DSL] Expose ColorUtil methods to DSL rules (#3749)

Fix #3743

Signed-off-by: Laurent Garnier <lg.hc@free.fr>

bundles/org.openhab.core.model.script/bnd.bnd

@@ -39,6 +39,7 @@ Import-Package: \
  org.openhab.core.transform,\
  org.openhab.core.transform.actions,\
  org.openhab.core.types,\
+ org.openhab.core.util,\
  org.openhab.core.voice,\
  org.openhab.core.voice.text,\
  org.openhab.core.io.console,\

bundles/org.openhab.core.model.script/src/org/openhab/core/model/script/actions/CoreUtil.java

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2010-2023 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.core.model.script.actions;
+
+import org.openhab.core.library.types.HSBType;
+import org.openhab.core.library.types.PercentType;
+import org.openhab.core.util.ColorUtil;
+import org.openhab.core.util.ColorUtil.Gamut;
+
+/**
+ * This class provides static methods mapping methods from package org.openhab.core.util
+ *
+ * @author Laurent Garnier - Initial contribution
+ */
+public class CoreUtil {
+
+    public static int[] hsbToRgb(HSBType hsb) {
+        return ColorUtil.hsbToRgb(hsb);
+    }
+
+    public static PercentType[] hsbToRgbPercent(HSBType hsb) {
+        return ColorUtil.hsbToRgbPercent(hsb);
+    }
+
+    public static int hsbTosRgb(HSBType hsb) {
+        return ColorUtil.hsbTosRgb(hsb);
+    }
+
+    public static double[] hsbToXY(HSBType hsb) {
+        return ColorUtil.hsbToXY(hsb);
+    }
+
+    public static double[] hsbToXY(HSBType hsb, double[] gamutR, double[] gamutG, double[] gamutB) {
+        Gamut gamut = new Gamut(gamutR, gamutG, gamutB);
+        return ColorUtil.hsbToXY(hsb, gamut);
+    }
+
+    public static HSBType rgbToHsb(int[] rgb) throws IllegalArgumentException {
+        return ColorUtil.rgbToHsb(rgb);
+    }
+
+    public static HSBType rgbToHsb(PercentType[] rgb) throws IllegalArgumentException {
+        return ColorUtil.rgbToHsb(rgb);
+    }
+
+    public static HSBType xyToHsb(double[] xy) throws IllegalArgumentException {
+        return ColorUtil.xyToHsb(xy);
+    }
+
+    public static HSBType xyToHsb(double[] xy, double[] gamutR, double[] gamutG, double[] gamutB)
+            throws IllegalArgumentException {
+        Gamut gamut = new Gamut(gamutR, gamutG, gamutB);
+        return ColorUtil.xyToHsb(xy, gamut);
+    }
+}

bundles/org.openhab.core.model.script/src/org/openhab/core/model/script/scoping/ScriptImplicitlyImportedTypes.java

@@ -31,6 +31,7 @@ import org.openhab.core.library.unit.MetricPrefix;
 import org.openhab.core.library.unit.SIUnits;
 import org.openhab.core.library.unit.Units;
 import org.openhab.core.model.script.actions.BusEvent;
+import org.openhab.core.model.script.actions.CoreUtil;
 import org.openhab.core.model.script.actions.Exec;
 import org.openhab.core.model.script.actions.HTTP;
 import org.openhab.core.model.script.actions.Log;
@@ -100,6 +101,7 @@ public class ScriptImplicitlyImportedTypes extends ImplicitlyImportedFeatures {
         result.add(Transformation.class);
         result.add(ScriptExecution.class);
         result.add(URLEncoder.class);
+        result.add(CoreUtil.class);
 
         result.add(ImperialUnits.class);
         result.add(MetricPrefix.class);