source: other-projects/tipple-android/tipple-ar/tipple-standalone-hpg/src/org/greenstone/android/tipple/base/Global.java@ 26528

package org.greenstone.android.tipple.base;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Random;

import org.greenstone.android.tipple.R;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.speech.tts.TextToSpeech;

/**
 * Bad programming, but simplifies things.
 */
public class Global {

    private static Random randomGen;
    public static Activity activity;
    public static TextToSpeech tts;
    static HashMap<String, Bitmap> bitmapIcons;
    static HashMap<String, Drawable> drawableIcons;
    static ArrayList<TipLocation> locations;
    private static int numGenerated = 0; // the number of points created (for name generation) 

    static {
        randomGen = new Random();
        bitmapIcons = new HashMap<String, Bitmap>();
        drawableIcons = new HashMap<String, Drawable>();
    }

    public static int randomColor() {
        return randomGen.nextInt(1 << 24) + 0xff000000;
    }

    public static String randomIcon() {
        String[] icons = new String[] { "dinosaurpark", "house", "shop", "lecture" };
        int randomIndex = randomGen.nextInt(icons.length);
        return icons[randomIndex];
    }

    public static Bitmap getBitmap(String resourceName) {
        if (bitmapIcons.get(resourceName) == null) {
            int id = 0;
            if (resourceName != null) {
                id = activity.getResources().getIdentifier(resourceName, "drawable",
                        activity.getPackageName());
            }
            if (id == 0) {
                id = R.drawable.marker;
            }
            Bitmap b = BitmapFactory.decodeResource(activity.getResources(), id);
            bitmapIcons.put(resourceName, b);
        }
        return bitmapIcons.get(resourceName);
    }

    public static Drawable getDrawable(String resourceName) {

        if (drawableIcons.get(resourceName) == null) {
            int id = 0;
            if (resourceName != null) {
                id = activity.getResources().getIdentifier(resourceName, "drawable",
                        activity.getPackageName());
            }
            if (id == 0) {
                id = R.drawable.marker;
            }
            Drawable d = activity.getResources().getDrawable(id);
            d.setBounds(0 - d.getIntrinsicWidth() / 2, 0 - d.getIntrinsicHeight(),
                    d.getIntrinsicWidth() / 2, 0);
            drawableIcons.put(resourceName, d);
        }
        return drawableIcons.get(resourceName);
    }

    public static TipLocation fixedLocation(Location current) {
        return makeTipLocation(-37.78804, 175.31238, 0);

    }

    public static TipLocation randomLocation(Location current) {
        double lat = current.getLatitude() + (randomGen.nextDouble() - 0.5) / 2000;
        double lon = current.getLongitude() + (randomGen.nextDouble() - 0.5) / 2000;
        double alt = current.getAltitude() + 4 * (randomGen.nextDouble() - 0.5)
                - LocationFusion.getInstance().lastKnownLocation.getAltitude();

        return makeTipLocation(lat, lon, alt);
    }

    public static TipLocation makeTipLocation(Location loc) {
        return makeTipLocation(loc.getLatitude(), loc.getLongitude(), loc.getAltitude()
                - LocationFusion.getInstance().lastKnownLocation.getAltitude());
    }

    public static TipLocation makeTipLocation(double lat, double lon, double alt) {
        HashMap<String, String> data = new HashMap<String, String>();

        data.put("latitude", Double.toString(lat));
        data.put("longitude", Double.toString(lon));
        data.put("altitude", Double.toString(alt));
        data.put("radius", "0.03");

        data.put("title", nextName());
        data.put("text", "This is a randomly generated location");
        data.put("tts", "This is a randomly generated location");
        data.put("tts_title", "Random Location " + data.get("title"));

        data.put("colour_fill", "#" + Integer.toHexString(randomColor()));
        data.put("colour_outline", "#" + Integer.toHexString(randomColor()));

        data.put("marker_type", randomIcon());

        data.put("audio", "");

        return new TipLocation(data);
    }
    
    private static String nextName()
    {
        numGenerated++;
        
        StringBuilder name = new StringBuilder();
        int i = numGenerated;
        while (i > 0)
        {
            name.insert(0, (char) ('A' + i % 26));
            i /= 26;
        }
        
        return name.toString();
    }
}