代码质量，修改缩放

designer/src/com/fr/design/mainframe/alphafine/preview/FilePreviewPane.java

@@ -1,22 +1,25 @@
 package com.fr.design.mainframe.alphafine.preview;
 
 import com.fr.design.gui.ilable.UILabel;
+import com.fr.design.mainframe.alphafine.AlphaFineConstants;
 
 import javax.swing.*;
 import java.awt.*;
+import java.awt.image.BufferedImage;
 
 /**
  * Created by XiaXiang on 2017/5/2.
  */
 public class FilePreviewPane extends JPanel {
 
-    public FilePreviewPane(Image image) {
+    public FilePreviewPane(BufferedImage image) {
+        setLayout(new BorderLayout());
         UILabel label = new UILabel();
-        label.setOpaque(true);
-        label.setBackground(Color.white);
-        float scale = image.getWidth(null) / 380;
-        image = image.getScaledInstance(380, (int) (image.getHeight(null) / scale), Image.SCALE_SMOOTH);
-        label.setIcon(new ImageIcon(image));
+        float widthScale = (AlphaFineConstants.RIGHT_WIDTH) / (float) image.getWidth();
+        float heightScale = (AlphaFineConstants.CONTENT_HEIGHT) / (float) image.getHeight();
+        Image showImage;
+        showImage = widthScale > heightScale? image.getScaledInstance((int) (image.getWidth() * heightScale), AlphaFineConstants.CONTENT_HEIGHT, Image.SCALE_SMOOTH) : image.getScaledInstance(AlphaFineConstants.RIGHT_WIDTH, (int) (image.getWidth() * widthScale), Image.SCALE_SMOOTH);
+        label.setIcon(new ImageIcon(showImage));
         add(label);
     }
 }