REPORT-19008 水印增加密度设置

designer-base/src/main/java/com/fr/design/report/WatermarkPane.java

@@ -14,12 +14,17 @@ import com.fr.design.layout.TableLayoutHelper;
 import com.fr.design.style.color.NewColorSelectPane;
 import com.fr.design.utils.gui.GUICoreUtils;
 
-import javax.swing.*;
+import javax.swing.BorderFactory;
+import javax.swing.SwingConstants;
+import javax.swing.JComponent;
+import javax.swing.JPanel;
 import javax.swing.event.ChangeEvent;
 import javax.swing.event.ChangeListener;
 import javax.swing.event.DocumentEvent;
 import javax.swing.event.DocumentListener;
-import java.awt.*;
+import java.awt.Dimension;
+import java.awt.BorderLayout;
+import java.awt.Color;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.awt.event.ItemEvent;