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/*
* Copyright © 2014 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
package org.altusmetrum.altosuilib_2;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.lang.Math;
import java.awt.geom.*;
import java.util.*;
import java.util.concurrent.*;
import org.altusmetrum.altoslib_4.*;
public class AltosUIMapLine {
AltosUILatLon start, end;
private Font font = null;
public void set_font(Font font) {
this.font = font;
}
private AltosUILatLon lat_lon(MouseEvent e, AltosUIMapTransform t) {
return t.screen_lat_lon(e.getPoint());
}
public void dragged(MouseEvent e, AltosUIMapTransform t) {
end = lat_lon(e, t);
}
public void pressed(MouseEvent e, AltosUIMapTransform t) {
start = lat_lon(e, t);
end = null;
}
private String line_dist() {
String format;
AltosGreatCircle g = new AltosGreatCircle(start.lat, start.lon,
end.lat, end.lon);
double distance = g.distance;
if (AltosConvert.imperial_units) {
distance = AltosConvert.meters_to_feet(distance);
if (distance < 10000) {
format = "%4.0fft";
} else {
distance /= 5280;
if (distance < 10)
format = "%5.3fmi";
else if (distance < 100)
format = "%5.2fmi";
else if (distance < 1000)
format = "%5.1fmi";
else
format = "%5.0fmi";
}
} else {
if (distance < 10000) {
format = "%4.0fm";
} else {
distance /= 1000;
if (distance < 100)
format = "%5.2fkm";
else if (distance < 1000)
format = "%5.1fkm";
else
format = "%5.0fkm";
}
}
return String.format(format, distance);
}
public void paint(Graphics2D g, AltosUIMapTransform t) {
g.setColor(Color.BLUE);
if (start == null || end == null)
return;
Line2D.Double line = new Line2D.Double(t.screen(start),
t.screen(end));
g.draw(line);
String message = line_dist();
g.setFont(font);
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
Rectangle2D bounds;
bounds = font.getStringBounds(message, g.getFontRenderContext());
float x = (float) line.x1;
float y = (float) line.y1 + (float) bounds.getHeight() / 2.0f;
if (line.x1 < line.x2) {
x -= (float) bounds.getWidth() + 2.0f;
} else {
x += 2.0f;
}
g.drawString(message, x, y);
}
}
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