JAL-3746 apply copyright to source

[jalview.git] / src / jalview / gui / Slider.java

diff --git a/src/jalview/gui/Slider.java b/src/jalview/gui/Slider.java
index c8f673d..5dc3351 100644 (file)
--- a/src/jalview/gui/Slider.java
+++ b/src/jalview/gui/Slider.java
@@ -1,3 +1,23 @@
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview 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, either version 3
+ * of the License, or (at your option) any later version.
+ *  
+ * Jalview 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 Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
 package jalview.gui;
 
 import javax.swing.JSlider;
@@ -16,6 +36,12 @@ import javax.swing.JSlider;
 public class Slider extends JSlider
 {
   /*
+   * the number of nominal positions the slider represents
+   * (higher number = more fine-grained positioning)
+   */
+  private static final int SCALE_TICKS = 1000;
+
+  /*
    * 'true' value corresponding to zero on the slider
    */
   private float trueMin;
@@ -57,11 +83,9 @@ public class Slider extends JSlider
     trueMin = min;
     trueMax = max;
     setMinimum(0);
-    sliderScaleFactor = 100f / (max - min);
+    sliderScaleFactor = SCALE_TICKS / (max - min);
     int sliderMax = (int) ((max - min) * sliderScaleFactor);
-    int extent = 1;
-    setExtent(extent);
-    setMaximum(sliderMax + extent);
+    setMaximum(sliderMax);
     setSliderValue(value);
   }
 
@@ -91,8 +115,8 @@ public class Slider extends JSlider
   }
 
   /**
-   * Answers the value of the slider position as a percentage between minimum and
-   * maximum of its range
+   * Answers the value of the slider position as a percentage between minimum
+   * and maximum of its range
    * 
    * @return
    */