1.5修复版本

stegsolve/ZoomSlider.java

@@ -0,0 +1,66 @@
+package stegsolve;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ZoomSlider extends JPanel {
+
+    private JSlider slider;
+    private JTextField textBox;
+    private int value;
+    
+    public int getValue () { return value; }
+
+    void setValue(int value) {
+        slider.setValue(value);
+        textBox.setText(String.valueOf(value));
+        this.value = value;
+        for (SliderChangeListener scl : changeListeners)
+            scl.change(value);
+    }
+
+    private List<SliderChangeListener> changeListeners = new ArrayList<>();
+
+    ZoomSlider(int min, int max, int defaultValue) {
+        JLabel tip = new JLabel("缩放:");
+
+        add(tip);
+
+        slider = new JSlider(min, max, defaultValue);
+
+        slider.addChangeListener(e -> {
+            setValue(slider.getValue());
+        });
+
+        add(slider);
+
+        textBox = new JTextField(String.valueOf(defaultValue), 5);
+
+        textBox.addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                if(e.getKeyCode() == KeyEvent.VK_ENTER){
+                    setValue(Integer.parseInt(textBox.getText()));
+                }
+            }
+        });
+
+        slider.setMaximumSize(new Dimension(500, 25));
+
+        add(textBox);
+
+        value = defaultValue;
+    }
+
+    void addChangeListener(SliderChangeListener listener) {
+        changeListeners.add(listener);
+    }
+}
+
+interface SliderChangeListener {
+    void change(int v);
+}