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package cgeo.geocaching.mapcommon;
import android.app.Activity;
import android.graphics.BlurMaskFilter;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.Typeface;
import android.util.DisplayMetrics;
import cgeo.geocaching.cgBase;
import cgeo.geocaching.cgSettings;
import cgeo.geocaching.cgSettings.mapSourceEnum;
import cgeo.geocaching.mapinterfaces.GeoPointImpl;
import cgeo.geocaching.mapinterfaces.MapProjectionImpl;
import cgeo.geocaching.mapinterfaces.MapViewImpl;
import cgeo.geocaching.mapinterfaces.OverlayBase;
import cgeo.geocaching.mapinterfaces.OverlayImpl;
public class cgOverlayScale implements OverlayBase {
private cgSettings settings = null;
private Paint scale = null;
private Paint scaleShadow = null;
private BlurMaskFilter blur = null;
private float pixelDensity = 0L;
private double pixels = 0d;
private int bottom = 0;
private double distance = 0d;
private double distanceRound = 0d;
private String units = null;
private OverlayImpl ovlImpl=null;
public cgOverlayScale(Activity activity, cgSettings settingsIn, OverlayImpl overlayImpl) {
settings = settingsIn;
this.ovlImpl = overlayImpl;
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
pixelDensity = metrics.density;
}
@Override
public void drawOverlayBitmap(Canvas canvas, Point drawPosition,
MapProjectionImpl projection, byte drawZoomLevel) {
// Scale overlay is only necessary for google maps, so the mapsforge
// related draw method needs not to be filled.
}
@Override
public void draw(Canvas canvas, MapViewImpl mapView, boolean shadow) {
//super.draw(canvas, mapView, shadow);
final double span = mapView.getLongitudeSpan() / 1e6;
final GeoPointImpl center = mapView.getMapViewCenter();
pixels = mapView.getWidth() / 2.0; // pixels related to following latitude span
bottom = mapView.getHeight() - 14; // pixels from bottom side of screen
distance = cgBase.getDistance((center.getLatitudeE6() / 1e6), ((center.getLongitudeE6() / 1e6) - (span /2)), (center.getLatitudeE6() / 1e6), ((center.getLongitudeE6() / 1e6) + (span /2)));
distance = distance / 2;
distanceRound = 0d;
if(settings.units == cgSettings.unitsImperial) {
distance *= cgBase.kmInMiles;
if (distance > 100) { // 100+ mi > 1xx mi
distanceRound = Math.floor(distance / 100) * 100;
units = "mi";
} else if (distance > 10) { // 10 - 100 mi > 1x mi
distanceRound = Math.floor(distance / 10) * 10;
units = "mi";
} else if (distance > 1) { // 1 - 10 mi > 1.x mi
distanceRound = Math.floor(distance);
units = "mi";
} else if (distance > 0.1) { // 0.1 mi - 1.0 mi > 1xx ft
distance *= 5280;
distanceRound = Math.floor(distance / 100) * 100;
units = "ft";
} else { // 1 - 100 ft > 1x ft
distance *= 5280;
distanceRound = Math.round(distance / 10) * 10;
units = "ft";
}
} else {
if (distance > 100) { // 100+ km > 1xx km
distanceRound = Math.floor(distance / 100) * 100;
units = "km";
} else if (distance > 10) { // 10 - 100 km > 1x km
distanceRound = Math.floor(distance / 10) * 10;
units = "km";
} else if (distance > 1) { // 1 - 10 km > 1.x km
distanceRound = Math.floor(distance);
units = "km";
} else if (distance > 0.1) { // 100 m - 1 km > 1xx m
distance *= 1000;
distanceRound = Math.floor(distance / 100) * 100;
units = "m";
} else { // 1 - 100 m > 1x m
distance *= 1000;
distanceRound = Math.round(distance / 10) * 10;
units = "m";
}
}
pixels = Math.round((pixels / distance) * distanceRound);
if (blur == null) {
blur = new BlurMaskFilter(3, BlurMaskFilter.Blur.NORMAL);
}
if (scaleShadow == null) {
scaleShadow = new Paint();
scaleShadow.setAntiAlias(true);
scaleShadow.setStrokeWidth(4 * pixelDensity);
scaleShadow.setMaskFilter(blur);
scaleShadow.setTextSize(14 * pixelDensity);
scaleShadow.setTypeface(Typeface.DEFAULT_BOLD);
}
if (scale == null) {
scale = new Paint();
scale.setAntiAlias(true);
scale.setStrokeWidth(2 * pixelDensity);
scale.setTextSize(14 * pixelDensity);
scale.setTypeface(Typeface.DEFAULT_BOLD);
}
if (mapSourceEnum.googleSat == settings.mapSource) {
scaleShadow.setColor(0xFF000000);
scale.setColor(0xFFFFFFFF);
} else {
scaleShadow.setColor(0xFFFFFFFF);
scale.setColor(0xFF000000);
}
canvas.drawLine(10, bottom, 10, (bottom - (8 * pixelDensity)), scaleShadow);
canvas.drawLine((int)(pixels + 10), bottom, (int)(pixels + 10), (bottom - (8 * pixelDensity)), scaleShadow);
canvas.drawLine(8, bottom, (int)(pixels + 12), bottom, scaleShadow);
canvas.drawText(String.format("%.0f", distanceRound) + " " + units, (float)(pixels - (10 * pixelDensity)), (bottom - (10 * pixelDensity)), scaleShadow);
canvas.drawLine(11, bottom, 11, (bottom - (6 * pixelDensity)), scale);
canvas.drawLine((int)(pixels + 9), bottom, (int)(pixels + 9), (bottom - (6 * pixelDensity)), scale);
canvas.drawLine(10, bottom, (int)(pixels + 10), bottom, scale);
canvas.drawText(String.format("%.0f", distanceRound) + " " + units, (float)(pixels - (10 * pixelDensity)), (bottom - (10 * pixelDensity)), scale);
}
@Override
public OverlayImpl getOverlayImpl() {
return ovlImpl;
}
}
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