jdk/src/solaris/classes/sun/awt/X11/XLabelPeer.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/awt/X11/XLabelPeer.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2002-2003 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.awt.X11;
+
+import java.awt.*;
+import java.awt.peer.*;
+
+class XLabelPeer extends XComponentPeer implements LabelPeer {
+    /**
+     * Create the label
+     */
+
+    static final int            TEXT_XPAD = 8;
+    static final int            TEXT_YPAD = 6;
+    String label;
+    int alignment;
+
+    FontMetrics cachedFontMetrics;
+    Font oldfont;
+
+    FontMetrics getFontMetrics()
+    {
+        if (cachedFontMetrics != null)
+            return cachedFontMetrics;
+        else return getFontMetrics(getPeerFont());
+
+    }
+
+    void preInit(XCreateWindowParams params) {
+        super.preInit(params);
+        Label target = (Label) this.target;
+        label = target.getText();
+        if (label == null) {
+            label = "";
+        }
+        alignment = target.getAlignment();
+    }
+
+    XLabelPeer(Label target) {
+        super(target);
+    }
+
+    /**
+     * Minimum size.
+     */
+    public Dimension getMinimumSize() {
+        FontMetrics fm = getFontMetrics();
+        int w;
+        try {
+            w = fm.stringWidth(label);
+        }
+        catch (NullPointerException e) {
+            w = 0;
+        }
+        return new Dimension(w + TEXT_XPAD,
+                             fm.getAscent() + fm.getMaxDescent() + TEXT_YPAD);
+    }
+
+
+    /**
+     * Paint the label
+     */
+    // NOTE: This method is called by privileged threads.
+    //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
+    public void paint(Graphics g) {
+        int textX = 0;
+        int textY = 0;
+        g.setColor(getPeerBackground());
+        g.fillRect(0, 0, width, height);
+
+        Font f = getPeerFont();
+        g.setFont(f);
+        FontMetrics fm = g.getFontMetrics();
+
+        if (cachedFontMetrics == null)
+        {
+            cachedFontMetrics = fm;
+        }
+        else
+        {
+            if (oldfont != f)
+                cachedFontMetrics = fm;
+        }
+
+        switch (alignment) {
+          case Label.LEFT:
+              textX = 2;
+              textY = (height + fm.getMaxAscent() - fm.getMaxDescent()) / 2;
+              break;
+          case Label.RIGHT:
+              textX = width - (fm.stringWidth(label) + 2);
+              textY = (height + fm.getMaxAscent() - fm.getMaxDescent()) / 2;
+              break;
+          case Label.CENTER:
+              textX = (width - fm.stringWidth(label)) / 2;
+              textY = (height + fm.getMaxAscent() - fm.getMaxDescent()) / 2;
+              break;
+        }
+        if (isEnabled()) {
+            g.setColor(getPeerForeground());
+            g.drawString(label, textX, textY);
+        }
+        else {
+            g.setColor(getPeerBackground().brighter());
+            g.drawString(label, textX, textY);
+            g.setColor(getPeerBackground().darker());
+            g.drawString(label, textX - 1, textY - 1);
+        }
+    }
+
+    public void setText(String text) {
+        label = text;
+        if (label == null) {
+            label = "";
+        }
+        repaint();
+    }
+    public void setFont(Font f) {
+        super.setFont(f);
+        target.repaint();
+    }
+
+    public void setAlignment(int align) {
+        alignment = align;
+        repaint();
+    }
+}