Version 20, March 2020

[GpsPrune.git] / src / tim / prune / gui / CoordDisplay.java

diff --git a/src/tim/prune/gui/CoordDisplay.java b/src/tim/prune/gui/CoordDisplay.java
new file mode 100644 (file)
index 0000000..45a749a
--- /dev/null
+++ b/src/tim/prune/gui/CoordDisplay.java
@@ -0,0 +1,58 @@
+package tim.prune.gui;
+
+import tim.prune.data.Coordinate;
+
+/**
+ * Functions for display of coordinates in gui
+ */
+public abstract class CoordDisplay
+{
+
+       /**
+        * Construct an appropriate coordinate label using the selected format
+        * @param inCoordinate coordinate
+        * @param inFormat selected display format
+        * @return language-sensitive string
+        */
+       public static String makeCoordinateLabel(Coordinate inCoordinate, int inFormat)
+       {
+               String coord = inCoordinate.output(inFormat);
+               // Fix broken degree signs (due to unicode mangling)
+               final char brokenDeg = 65533;
+               if (coord.indexOf(brokenDeg) >= 0)
+               {
+                       coord = coord.replaceAll(String.valueOf(brokenDeg), "\u00B0");
+               }
+               return restrictDP(coord);
+       }
+
+
+       /**
+        * Restrict the given coordinate to a limited number of decimal places for display
+        * @param inCoord coordinate string
+        * @return chopped string
+        */
+       private static String restrictDP(String inCoord)
+       {
+               final int DECIMAL_PLACES = 7;
+               if (inCoord == null) return "";
+               String result = inCoord;
+               final int dotPos = Math.max(inCoord.lastIndexOf('.'), inCoord.lastIndexOf(','));
+               if (dotPos >= 0)
+               {
+                       final int chopPos = dotPos + DECIMAL_PLACES;
+                       if (chopPos < (inCoord.length()-1))
+                       {
+                               result = inCoord.substring(0, chopPos);
+                               // Maybe there's an exponential in there too which needs to be appended
+                               int expPos = inCoord.toUpperCase().indexOf("E", chopPos);
+                               if (expPos > 0 && expPos < (inCoord.length()-1))
+                               {
+                                       result += inCoord.substring(expPos);
+                               }
+                       }
+               }
+               return result;
+       }
+
+}