73 строки
2,3 КиБ
Java
73 строки
2,3 КиБ
Java
package org.insa.graphics.drawing.overlays;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.image.BufferedImage;
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import org.mapsforge.core.graphics.Canvas;
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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.core.model.Point;
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import org.mapsforge.map.awt.graphics.AwtBitmap;
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import org.mapsforge.map.layer.overlay.Marker;
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/**
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* Class extending the default Mapsforge's {@link Marker} with auto-scaling.
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*
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* Mapsforge's Markers do not scale with zoom level, this class aims at
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* correcting this. Internally, this image stores an {@link Image} instance and
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* scale it when a redraw is requested.
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*
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* @see MarkerUtils#getMarkerForColor(java.awt.Color, java.awt.Color,
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* org.insa.graphics.drawing.Drawing.AlphaMode)
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* @see PaintUtils#getStrokeWidth(int, byte)
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*/
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public class MarkerAutoScaling extends Marker {
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// Original image.
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private Image image;
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/**
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* Create a new MarkerAutoScaling at the given position with the given image.
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*
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* @param latLong Initial position of the marker.
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* @param image Image for this marker.
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*/
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public MarkerAutoScaling(LatLong latLong, Image image) {
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super(latLong, null, 0, 0);
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this.image = image;
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}
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/**
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* Set a new image for this marker overlay
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*
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* @param image New image to set.
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*/
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public void setImage(Image image) {
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this.image = image;
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}
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/**
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* @return Current image (marker) of this overlay.
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*/
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public Image getImage() {
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return image;
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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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Point topLeftPoint) {
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int width = (int) PaintUtils.getStrokeWidth(8, zoomLevel),
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height = (int) PaintUtils.getStrokeWidth(16, zoomLevel);
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BufferedImage bfd = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
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Graphics2D g = bfd.createGraphics();
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g.drawImage(
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this.image.getScaledInstance(bfd.getWidth(), bfd.getHeight(), Image.SCALE_SMOOTH),
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0, 0, null);
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setBitmap(new AwtBitmap(bfd));
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setVerticalOffset(-height / 2);
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super.draw(boundingBox, zoomLevel, canvas, topLeftPoint);
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g.dispose();
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}
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}
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