2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
7 * This program and the accompanying materials are made available under the
8 * terms of the Eclipse Public License 2.0 which is available at
9 * http://www.eclipse.org/legal/epl-2.0
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.mqtt.generic.values;
15 import java.math.BigDecimal;
16 import java.util.List;
17 import java.util.Locale;
19 import javax.ws.rs.NotSupportedException;
21 import org.eclipse.jdt.annotation.NonNullByDefault;
22 import org.eclipse.jdt.annotation.Nullable;
23 import org.openhab.binding.mqtt.generic.mapping.ColorMode;
24 import org.openhab.core.library.CoreItemFactory;
25 import org.openhab.core.library.types.HSBType;
26 import org.openhab.core.library.types.OnOffType;
27 import org.openhab.core.library.types.PercentType;
28 import org.openhab.core.library.types.StringType;
29 import org.openhab.core.types.Command;
30 import org.openhab.core.types.UnDefType;
31 import org.openhab.core.util.ColorUtil;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
36 * Implements a color value.
39 * Accepts user updates from a HSBType, OnOffType and StringType.
41 * Accepts MQTT state updates as OnOffType and a
42 * StringType with comma separated HSB ("h,s,b"), RGB ("r,g,b"), CIE xyY ("x,y,Y") and on, off strings.
43 * On, Off strings can be customized.
45 * @author David Graeff - Initial contribution
46 * @author Aitor Iturrioz - Add CIE xyY colors support
49 public class ColorValue extends Value {
50 private static BigDecimal factor = new BigDecimal("2.55"); // string to not lose precision
52 private final Logger logger = LoggerFactory.getLogger(ColorValue.class);
54 private final ColorMode colorMode;
55 private final String onValue;
56 private final String offValue;
57 private final int onBrightness;
60 * Creates a non initialized color value.
62 * @param colorMode The color mode: HSB, RGB or XYY.
63 * @param onValue The ON value string. This will be compared to MQTT messages.
64 * @param offValue The OFF value string. This will be compared to MQTT messages.
65 * @param onBrightness When receiving an ON command, the brightness percentage is set to this value
67 public ColorValue(ColorMode colorMode, @Nullable String onValue, @Nullable String offValue, int onBrightness) {
68 super(CoreItemFactory.COLOR, List.of(OnOffType.class, PercentType.class, StringType.class));
70 if (onBrightness > 100) {
71 throw new IllegalArgumentException("Brightness parameter must be <= 100");
74 this.colorMode = colorMode;
75 this.onValue = onValue == null ? "ON" : onValue;
76 this.offValue = offValue == null ? "OFF" : offValue;
77 this.onBrightness = onBrightness;
81 * Updates the color state.
84 public HSBType parseCommand(Command command) throws IllegalArgumentException {
85 HSBType oldvalue = (state == UnDefType.UNDEF) ? new HSBType() : (HSBType) state;
86 if (command instanceof HSBType hsbCommand) {
88 } else if (command instanceof OnOffType onOffCommand) {
89 PercentType minOn = new PercentType(Math.max(oldvalue.getBrightness().intValue(), onBrightness));
90 return new HSBType(oldvalue.getHue(), oldvalue.getSaturation(),
91 onOffCommand == OnOffType.ON ? minOn : new PercentType(0));
92 } else if (command instanceof PercentType percentCommand) {
93 return new HSBType(oldvalue.getHue(), oldvalue.getSaturation(), percentCommand);
95 final String updatedValue = command.toString();
96 if (onValue.equals(updatedValue)) {
97 PercentType minOn = new PercentType(Math.max(oldvalue.getBrightness().intValue(), onBrightness));
98 return new HSBType(oldvalue.getHue(), oldvalue.getSaturation(), minOn);
99 } else if (offValue.equals(updatedValue)) {
100 return new HSBType(oldvalue.getHue(), oldvalue.getSaturation(), new PercentType(0));
102 String[] split = updatedValue.split(",");
103 if (split.length != 3) {
104 throw new IllegalArgumentException(updatedValue + " is not a valid string syntax");
106 switch (this.colorMode) {
108 return new HSBType(updatedValue);
110 return HSBType.fromRGB(Integer.parseInt(split[0]), Integer.parseInt(split[1]),
111 Integer.parseInt(split[2]));
113 HSBType tempState = HSBType.fromXY(Float.parseFloat(split[0]), Float.parseFloat(split[1]));
114 return new HSBType(tempState.getHue(), tempState.getSaturation(), new PercentType(split[2]));
116 throw new IllegalArgumentException("Non supported color mode");
123 * Converts the color state to a string.
125 * @return Returns the color value depending on the color mode: as a HSB/HSV string (hue,saturation,brightness ->
126 * "60,100,100"), as an RGB string (red,green,blue -> "255,255,0") or as a xyY string
127 * ("0.419321,0.505255,100.00").
130 public String getMQTTpublishValue(Command command, @Nullable String pattern) {
131 String formatPattern = pattern;
132 if (formatPattern == null || "%s".equals(formatPattern)) {
133 if (this.colorMode == ColorMode.XYY) {
134 formatPattern = "%1$f,%2$f,%3$.2f";
136 formatPattern = "%1$d,%2$d,%3$d";
140 HSBType hsbState = (HSBType) command;
142 switch (this.colorMode) {
144 return String.format(formatPattern, hsbState.getHue().intValue(), hsbState.getSaturation().intValue(),
145 hsbState.getBrightness().intValue());
147 int[] rgb = ColorUtil.hsbToRgb(hsbState);
148 return String.format(formatPattern, rgb[0], rgb[1], rgb[2]);
150 double[] xyY = ColorUtil.hsbToXY(hsbState);
151 return String.format(Locale.ROOT, formatPattern, xyY[0], xyY[1],
152 hsbState.getBrightness().doubleValue());
154 throw new NotSupportedException(String.format("Non supported color mode: {}", this.colorMode));