altoslib: Switch distance from m/ft to km/miles for large values

[fw/altos] / altoslib / AltosUnitsRange.java

diff --git a/altoslib/AltosUnitsRange.java b/altoslib/AltosUnitsRange.java
new file mode 100644 (file)
index 0000000..9239481
--- /dev/null
+++ b/altoslib/AltosUnitsRange.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2016 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.altoslib_10;
+
+import java.text.*;
+
+public abstract class AltosUnitsRange {
+
+       AltosUnits      units;
+
+       double          lower_limit;
+       String          show_units;
+       String          say_units;
+
+       abstract double value(double v);
+       abstract int show_fraction(int width);
+       abstract int say_fraction();
+
+       AltosUnitsRange(AltosUnits units, boolean imperial_units) {
+               this.units = units;
+               this.show_units = units.show_units(imperial_units);
+               this.say_units = units.say_units(imperial_units);
+       }
+
+       AltosUnitsRange(double lower_limit, String show_units, String say_units) {
+               this.units = null;
+               this.lower_limit = lower_limit;
+               this.show_units = show_units;
+               this.say_units = say_units;
+       }
+}