+/*
+ * 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);
+ }
+}