S283 Planetary Science &… the Search for Life CD 3/0_CD-ROM.iso/install/jre1_3/lib/rt.jar/sun/awt/im/CompositionArea.class

Java Class File | 1979-12-31 | 4.8 KB | 189 lines

package sun.awt.im;

import java.awt.Canvas;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.InputMethodEvent;
import java.awt.event.InputMethodListener;
import java.awt.font.TextHitInfo;
import java.awt.font.TextLayout;
import java.awt.im.InputMethodRequests;
import java.text.AttributedCharacterIterator;

public class CompositionArea extends Canvas implements InputMethodListener {
   private CompositionAreaHandler handler;
   private TextLayout composedTextLayout;
   private TextHitInfo caret = null;
   private Window compositionWindow;
   private static final int TEXT_ORIGIN_X = 5;
   private static final int TEXT_ORIGIN_Y = 15;

   CompositionArea() {
      String var1 = Toolkit.getProperty("AWT.CompositionWindowTitle", "Input Window");
      this.compositionWindow = InputMethodContext.createInputMethodWindow(var1, (InputContext)null);
      ((Component)this).setSize(480, 18);
      ((Component)this).setForeground(Color.black);
      ((Component)this).setBackground(Color.white);
      ((Component)this).enableInputMethods(true);
      ((Component)this).enableEvents(8L);
      this.compositionWindow.add(this);
      this.compositionWindow.addWindowListener(new FrameWindowAdapter(this));
      ((Component)this).addInputMethodListener(this);
      this.compositionWindow.enableInputMethods(false);
      this.compositionWindow.pack();
      Dimension var2 = this.compositionWindow.getSize();
      Dimension var3 = ((Component)this).getToolkit().getScreenSize();
      this.compositionWindow.setLocation(var3.width - var2.width - 20, var3.height - var2.height - 100);
      this.compositionWindow.setVisible(false);
   }

   synchronized void setHandlerInfo(CompositionAreaHandler var1, InputContext var2) {
      this.handler = var1;
      ((InputMethodWindow)this.compositionWindow).setInputContext(var2);
   }

   public InputMethodRequests getInputMethodRequests() {
      return this.handler;
   }

   private Rectangle getCaretRectangle(TextHitInfo var1) {
      int var2 = 0;
      TextLayout var3 = this.composedTextLayout;
      if (var3 != null) {
         var2 = Math.round(var3.getCaretInfo(var1)[0]);
      }

      Graphics var4 = ((Component)this).getGraphics();
      Object var5 = null;

      try {
         var10 = var4.getFontMetrics();
      } finally {
         var4.dispose();
      }

      return new Rectangle(5 + var2, 15 - var10.getAscent(), 0, var10.getAscent() + var10.getDescent());
   }

   public void paint(Graphics var1) {
      super.paint(var1);
      var1.setColor(((Component)this).getForeground());
      TextLayout var2 = this.composedTextLayout;
      if (var2 != null) {
         var2.draw((Graphics2D)var1, 5.0F, 15.0F);
      }

      if (this.caret != null) {
         Rectangle var3 = this.getCaretRectangle(this.caret);
         var1.setXORMode(((Component)this).getBackground());
         var1.fillRect(var3.x, var3.y, 1, var3.height);
         var1.setPaintMode();
      }

   }

   public void inputMethodTextChanged(InputMethodEvent var1) {
      this.handler.inputMethodTextChanged(var1);
   }

   public void caretPositionChanged(InputMethodEvent var1) {
      this.handler.caretPositionChanged(var1);
   }

   void setText(AttributedCharacterIterator var1, TextHitInfo var2) {
      this.composedTextLayout = null;
      if (var1 == null) {
         this.compositionWindow.setVisible(false);
         this.caret = null;
      } else {
         Graphics var3 = ((Component)this).getGraphics();
         Object var4 = null;

         try {
            var16 = ((Graphics2D)var3).getFontRenderContext();
         } finally {
            var3.dispose();
         }

         this.composedTextLayout = new TextLayout(var1, var16);
         this.caret = var2;
         this.updateWindowLocation();
         if (!this.compositionWindow.isVisible()) {
            this.compositionWindow.setVisible(true);
         }

         var3 = ((Component)this).getGraphics();

         try {
            this.paint(var3);
         } finally {
            var3.dispose();
         }
      }

   }

   void setCaret(TextHitInfo var1) {
      this.caret = var1;
      if (this.compositionWindow.isVisible()) {
         Graphics var2 = ((Component)this).getGraphics();

         try {
            this.paint(var2);
         } finally {
            var2.dispose();
         }
      }

   }

   void updateWindowLocation() {
      InputMethodRequests var1 = this.handler.getClientInputMethodRequests();
      if (var1 != null) {
         Point var2 = new Point();
         Rectangle var3 = var1.getTextLocation((TextHitInfo)null);
         Dimension var4 = Toolkit.getDefaultToolkit().getScreenSize();
         Dimension var5 = this.compositionWindow.getSize();
         if (var3.x + var5.width > var4.width) {
            var2.x = var4.width - var5.width;
         } else {
            var2.x = var3.x;
         }

         if (var3.y + var3.height + 2 + var5.height > var4.height) {
            var2.y = var3.y - 2 - var5.height;
         } else {
            var2.y = var3.y + var3.height + 2;
         }

         this.compositionWindow.setLocation(var2);
      }
   }

   Rectangle getTextLocation(TextHitInfo var1) {
      Rectangle var2 = this.getCaretRectangle(var1);
      Point var3 = ((Component)this).getLocationOnScreen();
      var2.translate(var3.x, var3.y);
      return var2;
   }

   TextHitInfo getLocationOffset(int var1, int var2) {
      TextLayout var3 = this.composedTextLayout;
      if (var3 == null) {
         return null;
      } else {
         Point var4 = ((Component)this).getLocationOnScreen();
         var1 -= var4.x + 5;
         var2 -= var4.y + 15;
         return var3.getBounds().contains((double)var1, (double)var2) ? var3.hitTestChar((float)var1, (float)var2) : null;
      }
   }
}