diff --git a/designer_chart/src/com/fr/van/chart/designer/TableLayout4VanChartHelper.java b/designer_chart/src/com/fr/van/chart/designer/TableLayout4VanChartHelper.java
index d4854b7c07..ed94fd15c9 100644
--- a/designer_chart/src/com/fr/van/chart/designer/TableLayout4VanChartHelper.java
+++ b/designer_chart/src/com/fr/van/chart/designer/TableLayout4VanChartHelper.java
@@ -21,9 +21,9 @@ public class TableLayout4VanChartHelper {
     private static final int SMALL_GAP = 20;
     public static final int EXPANDABLE_PANE_WIDTH =290;
     public static final int EXPANDABLE_PANE_HIGHT =24;
-    public static final double DESCRIPTION_AREA_WIDTH =60;
+    public static final int DESCRIPTION_AREA_WIDTH = 60;
     public static final int EDIT_AREA_WIDTH =155;
-    public static final double SECOND_EDIT_AREA_WIDTH =143;
+    public static final int SECOND_EDIT_AREA_WIDTH = 143;
     public static final int COMPONENT_INTERVAL =12;
     public static final Border SECOND_EDIT_AREA_BORDER = BorderFactory.createEmptyBorder(0,12,0,0);
 
diff --git a/designer_chart/src/com/fr/van/chart/range/component/GradualIntervalConfigPane.java b/designer_chart/src/com/fr/van/chart/range/component/GradualIntervalConfigPane.java
index 60304afa28..3ce50d693c 100644
--- a/designer_chart/src/com/fr/van/chart/range/component/GradualIntervalConfigPane.java
+++ b/designer_chart/src/com/fr/van/chart/range/component/GradualIntervalConfigPane.java
@@ -50,7 +50,7 @@ public class GradualIntervalConfigPane extends JPanel{
             }
         };
 
-        legendGradientBar = new LegendGradientBar();
+        legendGradientBar = createLegendGradientBar();
 
         double p = TableLayout.PREFERRED;
         double f = TableLayout.FILL;
@@ -66,6 +66,10 @@ public class GradualIntervalConfigPane extends JPanel{
         this.add(contentPane,BorderLayout.CENTER);
     }
 
+    protected LegendGradientBar createLegendGradientBar() {
+        return new LegendGradientBar();
+    }
+
     protected Component[][] getPaneComponents(){
         return new Component[][]{
                 new Component[]{minMaxValuePane, null},
diff --git a/designer_chart/src/com/fr/van/chart/range/component/LegendGradientBar.java b/designer_chart/src/com/fr/van/chart/range/component/LegendGradientBar.java
index 8a2a9c0f3d..8b8c07aa52 100644
--- a/designer_chart/src/com/fr/van/chart/range/component/LegendGradientBar.java
+++ b/designer_chart/src/com/fr/van/chart/range/component/LegendGradientBar.java
@@ -126,10 +126,16 @@ public class LegendGradientBar extends JComponent implements ColorSelectable, UI
         addMouseEnteredListener();
         addMouseClickListener();
         addMouseReleasedListener();
-        addMouseDragListener();
+        if (supportDrag()) {
+            addMouseDragListener();
+        }
         addMouseExitedListener();
     }
 
+    protected boolean supportDrag() {
+        return true;
+    }
+
     private Color[] initColors(Color subColor, int colorSelectionBtnNum) {
         Color[] converseColors = getColorArray(subColor, colorSelectionBtnNum);
         Color[] colors = new Color[colorSelectionBtnNum];