PC Plus SuperCD (UK) 2000 March/pcp161a.iso/handson/files/copyjava.exe/com/sun/java/swing/plaf/basic/BasicLabelUI.class

Java Class File | 1998-02-26 | 5.7 KB | 151 lines

package com.sun.java.swing.plaf.basic;

import com.sun.java.swing.Icon;
import com.sun.java.swing.JComponent;
import com.sun.java.swing.JLabel;
import com.sun.java.swing.KeyStroke;
import com.sun.java.swing.LookAndFeel;
import com.sun.java.swing.SwingUtilities;
import com.sun.java.swing.plaf.ComponentUI;
import com.sun.java.swing.plaf.LabelUI;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Rectangle;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.Serializable;
import java.util.EventObject;

public class BasicLabelUI extends LabelUI implements Serializable, PropertyChangeListener {
   protected static BasicLabelUI labelUI = new BasicLabelUI();

   protected String layoutCL(JLabel var1, FontMetrics var2, String var3, Icon var4, Rectangle var5, Rectangle var6, Rectangle var7) {
      return SwingUtilities.layoutCompoundLabel(var2, var3, var4, var1.getVerticalAlignment(), var1.getHorizontalAlignment(), var1.getVerticalTextPosition(), var1.getHorizontalTextPosition(), var5, var6, var7, var1.getIconTextGap());
   }

   protected void paintEnabledText(JLabel var1, Graphics var2, String var3, int var4, int var5) {
      int var6 = var1.getDisplayedMnemonic();
      var2.setColor(((Component)var1).getForeground());
      BasicGraphicsUtils.drawString(var2, var3, var6, var4, var5);
   }

   protected void paintDisabledText(JLabel var1, Graphics var2, String var3, int var4, int var5) {
      int var6 = var1.getDisplayedMnemonic();
      Color var7 = ((Component)var1).getBackground();
      var2.setColor(var7.brighter());
      BasicGraphicsUtils.drawString(var2, var3, var6, var4, var5);
      var2.setColor(var7.darker());
      BasicGraphicsUtils.drawString(var2, var3, var6, var4 + 1, var5 + 1);
   }

   public void paint(Graphics var1, JComponent var2) {
      JLabel var3 = (JLabel)var2;
      String var4 = var3.getText();
      Icon var5 = ((Component)var3).isEnabled() ? var3.getIcon() : var3.getDisabledIcon();
      if (var5 != null || var4 != null) {
         FontMetrics var6 = var1.getFontMetrics();
         Rectangle var7 = new Rectangle();
         Rectangle var8 = new Rectangle();
         Rectangle var9 = new Rectangle(((Component)var2).getSize());
         Insets var10 = var2.getInsets();
         var9.x = var10.left;
         var9.y = var10.top;
         var9.width -= var10.left + var10.right;
         var9.height -= var10.top + var10.bottom;
         String var11 = this.layoutCL(var3, var6, var4, var5, var9, var7, var8);
         if (var5 != null) {
            var5.paintIcon(var2, var1, var7.x, var7.y);
         }

         if (var4 != null) {
            int var12 = var8.x;
            int var13 = var8.y + var6.getAscent();
            if (((Component)var3).isEnabled()) {
               this.paintEnabledText(var3, var1, var11, var12, var13);
               return;
            }

            this.paintDisabledText(var3, var1, var11, var12, var13);
         }

      }
   }

   public Dimension getPreferredSize(JComponent var1) {
      JLabel var2 = (JLabel)var1;
      String var3 = var2.getText();
      Icon var4 = var2.getIcon();
      Insets var5 = ((JComponent)var2).getInsets();
      Font var6 = ((Component)var2).getFont();
      int var7 = var5.left + var5.right;
      int var8 = var5.top + var5.bottom;
      if (var4 != null || var3 != null && (var3 == null || var6 != null)) {
         if (var3 != null && (var4 == null || var6 != null)) {
            FontMetrics var9 = ((Component)var2).getToolkit().getFontMetrics(var6);
            Rectangle var10 = new Rectangle();
            Rectangle var11 = new Rectangle();
            Rectangle var12 = new Rectangle(var7, var8, 32767, 32767);
            this.layoutCL(var2, var9, var3, var4, var12, var10, var11);
            Dimension var13 = var10.union(var11).getSize();
            var13.width += var7;
            var13.height += var8;
            return var13;
         } else {
            return new Dimension(var4.getIconWidth() + var7, var4.getIconHeight() + var8);
         }
      } else {
         return new Dimension(var7, var8);
      }
   }

   public Dimension getMinimumSize(JComponent var1) {
      return this.getPreferredSize(var1);
   }

   public Dimension getMaximumSize(JComponent var1) {
      return this.getPreferredSize(var1);
   }

   public void installUI(JComponent var1) {
      LookAndFeel.installColorsAndFont(var1, "Label.background", "Label.foreground", "Label.font");
      this.installKeyboardActions(var1);
      var1.addPropertyChangeListener(this);
   }

   public void uninstallUI(JComponent var1) {
      this.uninstallKeyboardActions(var1);
      var1.removePropertyChangeListener(this);
   }

   protected void installKeyboardActions(JComponent var1) {
      JLabel var2 = (JLabel)var1;
      int var3 = var2.getDisplayedMnemonic();
      Component var4 = var2.getLabelFor();
      var1.resetKeyboardActions();
      if (var3 != 0 && var4 != null) {
         ((JComponent)var2).registerKeyboardAction(new PressAction(var2, var4), KeyStroke.getKeyStroke(var3, 8, false), 2);
      }

   }

   protected void uninstallKeyboardActions(JComponent var1) {
      var1.resetKeyboardActions();
   }

   public static ComponentUI createUI(JComponent var0) {
      return labelUI;
   }

   public void propertyChange(PropertyChangeEvent var1) {
      if (var1.getPropertyName().equals("labelFor") || var1.getPropertyName().equals("displayedMnemonic")) {
         this.installKeyboardActions((JLabel)((EventObject)var1).getSource());
      }

   }
}