Android Open Source - SmartNavi Icon Style

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License

The source code is released under:

Apache License

Java Source Code

package org.osmdroid.bonuspack.kml;
//from ww  w .  j a v a2s  . c  o  m
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

import org.osmdroid.bonuspack.overlays.Marker;
import org.osmdroid.bonuspack.utils.WebImageCache;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PorterDuff.Mode;
import android.graphics.drawable.BitmapDrawable;
import android.os.Parcel;
import android.os.Parcelable;

/** Handling of KML IconStyle */
public class IconStyle extends ColorStyle implements Parcelable {
  
  public float mScale;
  public float mHeading;
  public String mHref;
  public Bitmap mIcon;
  public float mHotSpotX, mHotSpotY;
  
  private static WebImageCache mIconCache;
  static {
    //one common memory cache for all icons:
    mIconCache = new WebImageCache(100);
  }

  public IconStyle(){
    super();
    mScale = 1.0f;
    mHeading = 0.0f;
    mHotSpotX = 0.5f;
    mHotSpotY = 1.0f;
  }
  
  /** Load and set the icon bitmap, from a url or from a local file. 
   * @param href either the full url, or a relative path to a local file. 
   * @param containerFullPath full path of the container file. 
   * @param kmzContainer current KMZ file (as a ZipFile) - or null if irrelevant. 
   */
  public void setIcon(String href, String containerFullPath, ZipFile kmzContainer){
    mHref = href;
    if (mHref.startsWith("http://") || mHref.startsWith("https://")){
      mIcon = mIconCache.get(mHref);
    } else if (kmzContainer == null){
      File file = new File(containerFullPath);
      String actualFullPath = file.getParent()+'/'+mHref;
      mIcon = BitmapFactory.decodeFile(actualFullPath);
    } else {
      try {
        final ZipEntry fileEntry = kmzContainer.getEntry(href);
        InputStream stream = kmzContainer.getInputStream(fileEntry);
        mIcon = BitmapFactory.decodeStream(stream);
      } catch (Exception e) {
        mIcon = null;
      }
    }
  }
  
  /** @return the icon, scaled and blended with the icon color, as specified in the IconStyle. 
   * Assumes the icon is already loaded. */
  public BitmapDrawable getFinalIcon(Context context){
    if (mIcon == null)
      return null;
    int sizeX = Math.round(mIcon.getWidth() * mScale);
    int sizeY = Math.round(mIcon.getHeight() * mScale);
    Bitmap scaledBitmap = Bitmap.createScaledBitmap(mIcon, sizeX, sizeY, true);
    BitmapDrawable marker = new BitmapDrawable(context.getResources(), scaledBitmap);
    int color = getFinalColor();
    if (color != 0) //there is a real color to blend with:
      marker.setColorFilter(color, Mode.MULTIPLY);
    return marker;
  }

  /** apply all IconStyle attributes to the Marker */
  public void styleMarker(Marker marker, Context context){
    BitmapDrawable icon = getFinalIcon(context);
    marker.setIcon(icon);
    marker.setAnchor(mHotSpotX, mHotSpotY);
    marker.setRotation(mHeading);
  }
  
  public void writeAsKML(Writer writer){
    try {
      writer.write("<IconStyle>\n");
      super.writeAsKML(writer);
      //write the specifics:
      if (mScale != 1.0f)
        writer.write("<scale>"+mScale+"</scale>\n");
      if (mHeading != 0.0f)
        writer.write("<heading>"+mHeading+"</heading>\n");
      if (mHref != null)
        writer.write("<Icon><href>"+mHref+"</href></Icon>\n");
      writer.write("<hotSpot x=\"" + mHotSpotX + "\" y=\"" + mHotSpotY + "\" xunits=\"fraction\" yunits=\"fraction\"/>\n");
      writer.write("</IconStyle>\n");
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  
  //Parcelable implementation ------------
  
  @Override public int describeContents() {
    return 0;
  }

  @Override public void writeToParcel(Parcel out, int flags) {
    super.writeToParcel(out, flags);
    out.writeFloat(mScale);
    out.writeFloat(mHeading);
    out.writeString(mHref);
    out.writeParcelable(mIcon, flags);
    out.writeFloat(mHotSpotX);
    out.writeFloat(mHotSpotY);
  }
  
  public static final Parcelable.Creator<IconStyle> CREATOR = new Parcelable.Creator<IconStyle>() {
    @Override public IconStyle createFromParcel(Parcel source) {
      return new IconStyle(source);
    }
    @Override public IconStyle[] newArray(int size) {
      return new IconStyle[size];
    }
  };
  
  public IconStyle(Parcel in){
    super(in);
    mScale = in.readFloat();
    mHeading = in.readFloat();
    mHref = in.readString();
    mIcon = in.readParcelable(Bitmap.class.getClassLoader());
    mHotSpotX = in.readFloat();
    mHotSpotY = in.readFloat();
  }
  
}

Java Source Code List

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