92 lines
2.9 KiB
Java
92 lines
2.9 KiB
Java
package org.insa.graphics.drawing.overlays;
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import java.awt.Color;
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import java.util.ArrayList;
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import java.util.Collection;
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import org.insa.graph.Point;
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import org.mapsforge.core.graphics.Canvas;
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import org.mapsforge.core.graphics.GraphicFactory;
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import org.mapsforge.core.graphics.Style;
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import org.mapsforge.core.model.BoundingBox;
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import org.mapsforge.core.model.LatLong;
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import org.mapsforge.map.awt.graphics.AwtGraphicFactory;
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import org.mapsforge.map.layer.overlay.Polyline;
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/**
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* Class extending the default Mapsforge's {@link Polyline} with auto-scaling.
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*
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* Mapsforge's Polylines do not scale with zoom level, this class aims at
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* correcting this. When a redraw is requested, the width of the line is
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* recomputed for the current zoom level.
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*
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* @see PaintUtils#getStrokeWidth(int, byte)
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*/
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public class PolylineAutoScaling extends Polyline {
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// Graphic factory.
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private static final GraphicFactory GRAPHIC_FACTORY = AwtGraphicFactory.INSTANCE;
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// Original width of the polyline.
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private final int width;
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/**
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* Create a new PolylineAutoScaling with the given width and color.
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*
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* @param width Original width of the line (independent of the zoom level).
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* @param color Color of the line.
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*
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* @see PaintUtils#getStrokeWidth(int, byte)
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*/
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public PolylineAutoScaling(int width, Color color) {
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super(GRAPHIC_FACTORY.createPaint(), GRAPHIC_FACTORY);
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getPaintStroke().setColor(PaintUtils.convertColor(color));
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getPaintStroke().setStyle(Style.STROKE);
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this.width = width;
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}
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/**
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* Set the color for this polyline.
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*
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* @param color New color for this polyline.
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*/
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public void setColor(Color color) {
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getPaintStroke().setColor(PaintUtils.convertColor(color));
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}
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/**
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* @return Color of this polyline.
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*/
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public Color getColor() {
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return PaintUtils.convertColor(getPaintStroke().getColor());
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}
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/**
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* @param point Point to add to this line.
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*/
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public void add(Point point) {
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getLatLongs().add(new LatLong(point.getLatitude(), point.getLongitude()));
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}
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/**
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* @param points Points to add to this line.
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*/
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public void addAll(Collection<? extends Point> points) {
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ArrayList<LatLong> latlongs = new ArrayList<>(points.size());
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for (Point point: points) {
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latlongs.add(new LatLong(point.getLatitude(), point.getLongitude()));
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}
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getLatLongs().addAll(latlongs);
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}
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@Override
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public synchronized void draw(BoundingBox boundingBox, byte zoomLevel, Canvas canvas,
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org.mapsforge.core.model.Point topLeftPoint) {
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// Update paint stroke with width for level
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this.getPaintStroke().setStrokeWidth(PaintUtils.getStrokeWidth(width, zoomLevel));
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super.draw(boundingBox, zoomLevel, canvas, topLeftPoint);
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}
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}
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