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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   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
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.nanoleaf.internal.layout.shape;
  14
  15 import java.awt.BasicStroke;
  16 import java.awt.Color;
  17 import java.awt.Graphics2D;
  18 import java.awt.Polygon;
  19 import java.awt.Stroke;
  20 import java.util.ArrayList;
  21 import java.util.Collections;
  22 import java.util.List;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.openhab.binding.nanoleaf.internal.layout.DrawingSettings;
  26 import org.openhab.binding.nanoleaf.internal.layout.ImagePoint2D;
  27 import org.openhab.binding.nanoleaf.internal.layout.PanelState;
  28 import org.openhab.binding.nanoleaf.internal.layout.Point2D;
  29 import org.openhab.binding.nanoleaf.internal.layout.ShapeType;
  30 import org.openhab.binding.nanoleaf.internal.model.PositionDatum;
  31 import org.openhab.core.library.types.HSBType;
  32 import org.openhab.core.util.ColorUtil;
  33
  34 /**
  35  * A single line.
  36  *
  37  * @author Jørgen Austvik - Initial contribution
  38  */
  39 @NonNullByDefault
  40 public class SingleLine extends Panel {
  41
  42     private static final int CORNER_DIAMETER = 4;
  43     private static final int LINE_WIDTH = 6;
  44
  45     private final List<PositionDatum> corners;
  46
  47     public SingleLine(ShapeType shapeType, List<PositionDatum> corners) {
  48         super(shapeType);
  49
  50         this.corners = Collections.unmodifiableList(new ArrayList<>(corners));
  51     }
  52
  53     @Override
  54     public List<Point2D> generateOutline() {
  55         List<Point2D> result = new ArrayList<>(corners.size());
  56         for (PositionDatum corner : corners) {
  57             result.add(new Point2D(corner.getPosX(), corner.getPosY()));
  58         }
  59
  60         return result;
  61     }
  62
  63     @Override
  64     public void draw(Graphics2D graphics, DrawingSettings settings, PanelState state) {
  65         List<ImagePoint2D> outline = settings.generateImagePoints(generateOutline());
  66         Polygon p = new Polygon();
  67         for (int i = 0; i < outline.size(); i++) {
  68             ImagePoint2D pos = outline.get(i);
  69             p.addPoint(pos.getX(), pos.getY());
  70         }
  71
  72         if (settings.shouldFillWithColor()) {
  73             Color corner1Color = getColor(corners.get(0).getPanelId(), state);
  74             Color corner2Color = getColor(corners.get(0).getPanelId(), state);
  75
  76             ImagePoint2D center = findCenter(outline);
  77
  78             Stroke oldStroke = graphics.getStroke();
  79             Stroke lineStroke = new BasicStroke(LINE_WIDTH, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
  80             graphics.setStroke(lineStroke);
  81             graphics.setColor(corner1Color);
  82             graphics.drawLine(outline.get(0).getX(), outline.get(0).getY(), center.getX(), center.getY());
  83             graphics.setColor(corner2Color);
  84             graphics.drawLine(outline.get(1).getX(), outline.get(1).getY(), center.getX(), center.getY());
  85             graphics.setStroke(oldStroke);
  86         }
  87
  88         if (settings.shouldDrawOutline()) {
  89             graphics.setColor(settings.getOutlineColor());
  90             graphics.drawPolygon(p);
  91         }
  92
  93         if (settings.shouldDrawCorners()) {
  94             for (PositionDatum corner : corners) {
  95                 ImagePoint2D position = settings.generateImagePoint(new Point2D(corner.getPosX(), corner.getPosY()));
  96                 graphics.setColor(getColor(corner.getPanelId(), state));
  97                 graphics.fillOval(position.getX() - CORNER_DIAMETER / 2, position.getY() - CORNER_DIAMETER / 2,
  98                         CORNER_DIAMETER, CORNER_DIAMETER);
  99
 100                 if (settings.shouldDrawOutline()) {
 101                     graphics.setColor(settings.getOutlineColor());
 102                     graphics.drawOval(position.getX() - CORNER_DIAMETER / 2, position.getY() - CORNER_DIAMETER / 2,
 103                             CORNER_DIAMETER, CORNER_DIAMETER);
 104                 }
 105             }
 106         }
 107
 108         if (settings.shouldDrawLabels()) {
 109             graphics.setColor(settings.getLabelColor());
 110
 111             for (PositionDatum corner : corners) {
 112                 ImagePoint2D position = settings.generateImagePoint(new Point2D(corner.getPosX(), corner.getPosY()));
 113                 graphics.drawString(Integer.toString(corner.getPanelId()), position.getX(), position.getY());
 114             }
 115         }
 116     }
 117
 118     private ImagePoint2D findCenter(List<ImagePoint2D> outline) {
 119         Point2D[] bounds = findBounds(outline);
 120         int midX = bounds[0].getX() + (bounds[1].getX() - bounds[0].getX()) / 2;
 121         int midY = bounds[0].getY() + (bounds[1].getY() - bounds[0].getY()) / 2;
 122         return new ImagePoint2D(midX, midY);
 123     }
 124
 125     private static Color getColor(int panelId, PanelState state) {
 126         HSBType color = state.getHSBForPanel(panelId);
 127         return new Color(ColorUtil.hsbTosRgb(color));
 128     }
 129 }