001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.mappaint;
003
004import java.awt.Color;
005import java.util.Objects;
006
007import org.openstreetmap.josm.Main;
008import org.openstreetmap.josm.data.osm.OsmPrimitive;
009import org.openstreetmap.josm.data.osm.Relation;
010import org.openstreetmap.josm.data.osm.Way;
011import org.openstreetmap.josm.data.osm.visitor.paint.MapPaintSettings;
012import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
013import org.openstreetmap.josm.data.osm.visitor.paint.StyledMapRenderer;
014import org.openstreetmap.josm.gui.mappaint.MapPaintStyles.IconReference;
015import org.openstreetmap.josm.tools.CheckParameterUtil;
016import org.openstreetmap.josm.tools.Utils;
017
018public class AreaElemStyle extends ElemStyle {
019
020    /**
021     * If fillImage == null, color is the fill-color, otherwise
022     * an arbitrary color value sampled from the fillImage
023     */
024    public Color color;
025    public MapImage fillImage;
026    public TextElement text;
027
028    protected AreaElemStyle(Cascade c, Color color, MapImage fillImage, TextElement text) {
029        super(c, 1f);
030        CheckParameterUtil.ensureParameterNotNull(color);
031        this.color = color;
032        this.fillImage = fillImage;
033        this.text = text;
034    }
035
036    public static AreaElemStyle create(final Environment env) {
037        final Cascade c = env.mc.getCascade(env.layer);
038        MapImage fillImage = null;
039        Color color = null;
040
041        IconReference iconRef = c.get(FILL_IMAGE, null, IconReference.class);
042        if (iconRef != null) {
043            fillImage = new MapImage(iconRef.iconName, iconRef.source);
044            fillImage.getImage();
045
046            color = new Color(fillImage.getImage().getRGB(
047                    fillImage.getWidth() / 2, fillImage.getHeight() / 2)
048            );
049
050            fillImage.alpha = Math.min(255, Math.max(0, Integer.valueOf(Main.pref.getInteger("mappaint.fill-image-alpha", 255))));
051            Integer pAlpha = Utils.color_float2int(c.get(FILL_OPACITY, null, float.class));
052            if (pAlpha != null) {
053                fillImage.alpha = pAlpha;
054            }
055        } else {
056            color = c.get(FILL_COLOR, null, Color.class);
057            if (color != null) {
058                int alpha = color.getAlpha();
059                if (alpha == 255) {
060                    // Assume alpha value has not been specified by the user if
061                    // is set to fully opaque. Use default value in this case.
062                    // It is not an ideal solution, but a little tricky to get this
063                    // right, especially as named map colors can be changed in
064                    // the preference GUI and written to the preferences file.
065                    alpha = Math.min(255, Math.max(0, Integer.valueOf(Main.pref.getInteger("mappaint.fillalpha", 50))));
066                }
067                Integer pAlpha = Utils.color_float2int(c.get(FILL_OPACITY, null, float.class));
068                if (pAlpha != null) {
069                    alpha = pAlpha;
070                }
071                color = new Color(color.getRed(), color.getGreen(), color.getBlue(), alpha);
072            }
073        }
074
075        TextElement text = null;
076        Keyword textPos = c.get(TEXT_POSITION, null, Keyword.class);
077        if (textPos == null || "center".equals(textPos.val)) {
078            text = TextElement.create(env, PaintColors.AREA_TEXT.get(), true);
079        }
080
081        if (color != null)
082            return new AreaElemStyle(c, color, fillImage, text);
083        else
084            return null;
085    }
086
087    @Override
088    public void paintPrimitive(OsmPrimitive osm, MapPaintSettings paintSettings, StyledMapRenderer painter,
089            boolean selected, boolean outermember, boolean member) {
090        Color myColor = color;
091        if (osm instanceof Way) {
092            if (color != null) {
093                if (selected) {
094                    myColor = paintSettings.getSelectedColor(color.getAlpha());
095                } else if (outermember) {
096                    myColor = paintSettings.getRelationSelectedColor(color.getAlpha());
097                }
098            }
099            painter.drawArea((Way) osm, myColor, fillImage, text);
100        } else if (osm instanceof Relation) {
101            if (color != null && (selected || outermember)) {
102                myColor = paintSettings.getRelationSelectedColor(color.getAlpha());
103            }
104            painter.drawArea((Relation) osm, myColor, fillImage, text);
105        }
106    }
107
108    @Override
109    public boolean equals(Object obj) {
110        if (obj == null || getClass() != obj.getClass())
111            return false;
112        if (!super.equals(obj))
113            return false;
114        AreaElemStyle other = (AreaElemStyle) obj;
115        // we should get the same image object due to caching
116        if (!Objects.equals(fillImage, other.fillImage))
117            return false;
118        if (!Objects.equals(color, other.color))
119            return false;
120        if (!Objects.equals(text, other.text))
121            return false;
122        return true;
123    }
124
125    @Override
126    public int hashCode() {
127        int hash = 3;
128        hash = 61 * hash + color.hashCode();
129        hash = 61 * hash + (fillImage != null ? fillImage.hashCode() : 0);
130        hash = 61 * hash + (text != null ? text.hashCode() : 0);
131        return hash;
132    }
133
134    @Override
135    public String toString() {
136        return "AreaElemStyle{" + super.toString() + "color=" + Utils.toString(color) +
137                " fillImage=[" + fillImage + "]}";
138    }
139}