Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / gui / colour / ContinuousPointColourer.java

diff --git a/src/tim/prune/gui/colour/ContinuousPointColourer.java b/src/tim/prune/gui/colour/ContinuousPointColourer.java
new file mode 100644 (file)
index 0000000..64a9583
--- /dev/null
+++ b/src/tim/prune/gui/colour/ContinuousPointColourer.java
@@ -0,0 +1,74 @@
+package tim.prune.gui.colour;
+
+import java.awt.Color;
+
+public abstract class ContinuousPointColourer extends PointColourer
+{
+       /** array of colours to use */
+       private Color[] _colours = null;
+
+       /**
+        * Constructor
+        * @param inStartColour start colour
+        * @param inEndColour end colour
+        */
+       public ContinuousPointColourer(Color inStartColour, Color inEndColour)
+       {
+               super(inStartColour, inEndColour);
+       }
+
+       /** Continuous colourers don't need a maximum count */
+       public static boolean isMaxColoursRequired() {
+               return false;
+       }
+
+       /**
+        * Initialise the array to the right size
+        * @param inNumPoints number of points in the track
+        */
+       protected void init(int inNumPoints)
+       {
+               if (_colours == null || _colours.length != inNumPoints)
+               {
+                       // Array needs to be created or resized
+                       if (inNumPoints > 0) {
+                               _colours = new Color[inNumPoints];
+                       }
+                       else {
+                               _colours = null;
+                       }
+               }
+       }
+
+       /**
+        * Set the colour at the given index
+        * @param inPointIndex point index
+        * @param inColour colour to use, or null
+        */
+       protected void setColour(int inPointIndex, Color inColour)
+       {
+               if (_colours != null && _colours.length > inPointIndex && inPointIndex >= 0)
+               {
+                       _colours[inPointIndex] = inColour;
+               }
+       }
+
+       /**
+        * Get the colour for the given point index
+        * @param inPointIndex index of point in track
+        * @return colour object
+        */
+       public Color getColour(int inPointIndex)
+       {
+               Color colour = null;
+               if (_colours != null && _colours.length > inPointIndex && inPointIndex >= 0)
+               {
+                       colour = _colours[inPointIndex];
+               }
+               if (colour == null) {
+                       // not found, use default
+                       colour = super.getDefaultColour();
+               }
+               return colour;
+       }
+}