1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.mappaint.styleelement;
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3 |
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4 | import java.util.Objects;
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5 |
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6 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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7 | import org.openstreetmap.josm.data.osm.visitor.paint.MapPaintSettings;
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8 | import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
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9 | import org.openstreetmap.josm.data.osm.visitor.paint.StyledMapRenderer;
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10 | import org.openstreetmap.josm.gui.mappaint.Cascade;
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11 | import org.openstreetmap.josm.gui.mappaint.Environment;
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12 | import org.openstreetmap.josm.gui.mappaint.Keyword;
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13 | import org.openstreetmap.josm.gui.mappaint.styleelement.placement.CompletelyInsideAreaStrategy;
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14 |
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15 | /**
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16 | * The text that is drawn for a way/area. It may be drawn along the outline or onto the way.
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17 | *
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18 | * @since 11722
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19 | */
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20 | public class TextElement extends StyleElement {
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21 |
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22 | private final TextLabel text;
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23 |
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24 | protected TextElement(Cascade c, TextLabel text) {
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25 | super(c, 4.9f);
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26 | this.text = text;
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27 | }
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28 |
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29 | /**
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30 | * Create a new text element
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31 | * @param env The environment to read the text data from
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32 | * @return The text element or <code>null</code> if it could not be created.
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33 | */
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34 | public static TextElement create(final Environment env) {
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35 | TextLabel text = TextLabel.create(env, PaintColors.TEXT.get(), false);
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36 | if (text == null)
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37 | return null;
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38 | final Cascade c = env.mc.getCascade(env.layer);
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39 | return new TextElement(c, text);
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40 | }
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41 |
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42 | /**
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43 | * JOSM traditionally adds both line and content text elements if a fill style was set.
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44 | *
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45 | * For now, we simulate this by generating a TextElement if no text-position was provided.
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46 | * @param env The environment to read the text data from
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47 | * @return The text element or <code>null</code> if it could not be created.
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48 | */
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49 | public static TextElement createForContent(Environment env) {
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50 | final Cascade c = env.mc.getCascade(env.layer);
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51 | Keyword positionKeyword = c.get(AreaElement.TEXT_POSITION, null, Keyword.class);
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52 | if (positionKeyword != null) {
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53 | return null; // No need for this hack.
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54 | }
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55 |
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56 | TextLabel text = TextLabel.create(env, PaintColors.TEXT.get(), true);
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57 | if (text == null) {
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58 | return null;
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59 | }
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60 | return new TextElement(c, text.withPosition(CompletelyInsideAreaStrategy.INSTANCE));
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61 | }
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62 |
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63 | @Override
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64 | public void paintPrimitive(OsmPrimitive primitive, MapPaintSettings paintSettings, StyledMapRenderer painter,
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65 | boolean selected, boolean outermember, boolean member) {
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66 | painter.drawText(primitive, text);
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67 | }
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68 |
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69 | @Override
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70 | public boolean equals(Object obj) {
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71 | if (this == obj) return true;
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72 | if (obj == null || getClass() != obj.getClass()) return false;
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73 | if (!super.equals(obj)) return false;
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74 | TextElement that = (TextElement) obj;
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75 | return Objects.equals(text, that.text);
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76 | }
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77 |
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78 | @Override
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79 | public int hashCode() {
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80 | return Objects.hash(super.hashCode(), text);
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81 | }
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82 |
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83 | @Override
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84 | public String toString() {
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85 | return "TextElement{" + super.toString() + "text=" + text + '}';
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86 | }
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87 | }
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