Created a lightweight class for managing text formatted to fit in a

particular dimension (either horizontal or vertical). git-svn-id: https://samskivert.googlecode.com/svn/trunk@525 6335cc39-0255-0410-8fd6-9bcaacd3b74c
2001-12-19 07:02:50 +00:00
parent fa2a7c7105
commit d6dc2e1822
2 changed files with 363 additions and 0 deletions
@@ -0,0 +1,104 @@
+//
+// $Id: LabelDemo.java,v 1.1 2001/12/19 07:02:50 mdb Exp $
+
+package com.samskivert.swing;
+
+import java.awt.*;
+import javax.swing.*;
+
+public class LabelDemo extends JPanel
+{
+    public LabelDemo ()
+    {
+        // create our labels
+        String text = "The quick brown fox jumped over the lazy dog. " +
+            "He then popped into the butcher's and picked up some mutton.";
+        Font font = new Font("Courier", Font.PLAIN, 10);
+
+        _labelZero = new Label(text);
+        _labelZero.setFont(font);
+
+        _labelOne = new Label(text);
+        _labelOne.setFont(font);
+        _labelOne.setTargetWidth(100);
+
+        _labelTwo = new Label(text);
+        _labelTwo.setFont(font);
+        _labelTwo.setTargetHeight(30);
+    }
+
+    public void layout ()
+    {
+        super.layout();
+
+        // layout our labels
+        Graphics2D g = (Graphics2D)getGraphics();
+        _labelZero.layout(g);
+        System.out.println("l0: " + _labelZero.getSize());
+        _labelOne.layout(g);
+        System.out.println("l1: " + _labelOne.getSize());
+        _labelTwo.layout(g);
+        System.out.println("l2: " + _labelTwo.getSize());
+    }
+
+    public void paintComponent (Graphics g)
+    {
+        super.paintComponent(g);
+
+        // render our labels
+        Graphics2D g2 = (Graphics2D)g;
+        Dimension size;
+        int x = 10, y = 10;
+
+        g2.setColor(Color.black);
+        _labelZero.render(g2, x, y);
+        g2.setColor(Color.red);
+        size = _labelZero.getSize();
+        g2.drawRect(x, y, size.width, size.height);
+
+        y += 20;
+        g2.setColor(Color.black);
+        _labelTwo.render(g2, x, y);
+        g2.setColor(Color.red);
+        size = _labelTwo.getSize();
+        g2.drawRect(x, y, size.width, size.height);
+        g2.setColor(Color.blue);
+        g2.drawRect(x, y, size.width, 30);
+
+        y += 40;
+        g2.setColor(Color.black);
+        _labelOne.render(g2, x, y);
+        g2.setColor(Color.red);
+        size = _labelOne.getSize();
+        g2.drawRect(x, y, size.width, size.height);
+        g2.setColor(Color.blue);
+        g2.drawRect(x, y, 100, size.height);
+    }
+
+    public Dimension getPreferredSize ()
+    {
+        // lay out label zero if necessary
+        int width = _labelZero.getSize().width;
+        if (width == 0) {
+            Graphics2D g = (Graphics2D)getGraphics();
+            _labelZero.layout(g);
+            width = _labelZero.getSize().width;
+        }
+
+        return new Dimension(width + 20, 300);
+    }
+
+    public static void main (String[] args)
+    {
+        JFrame frame = new JFrame("Label Demo");
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        LabelDemo demo = new LabelDemo();
+        frame.getContentPane().add(demo);
+        frame.pack();
+        frame.show();
+    }
+
+    protected Label _labelZero;
+    protected Label _labelOne;
+    protected Label _labelTwo;
+}