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1 files changed, 255 insertions, 0 deletions

diff --git a/libjava/classpath/javax/swing/border/CompoundBorder.java b/libjava/classpath/javax/swing/border/CompoundBorder.java
new file mode 100644
index 000000000..d811150ba
--- /dev/null
+++ b/libjava/classpath/javax/swing/border/CompoundBorder.java
@@ -0,0 +1,255 @@
+/* CompoundBorder.java --
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing.border;
+
+import java.awt.Component;
+import java.awt.Graphics;
+import java.awt.Insets;
+
+/**
+ * A Border that is composed of an interior and an exterior border,
+ * where the interior border is tightly nested into the exterior.
+ *
+ * @author Sascha Brawer (brawer@dandelis.ch)
+ */
+public class CompoundBorder extends AbstractBorder
+{
+  /**
+   * Determined using the <code>serialver</code> tool
+   * of Apple/Sun JDK 1.3.1 on MacOS X 10.1.5.
+   */
+  static final long serialVersionUID = 9054540377030555103L;
+
+  /**
+   * The inside border, which is painted between the bordered
+   * Component and the outside border. It is valid for
+   * <code>insideBorder</code> to be <code>null</code>.
+   */
+  protected Border insideBorder;
+
+  /**
+   * The outside border, which is painted outside both the
+   * bordered Component and the inside border. It is valid for
+   * <code>outsideBorder</code> to be <code>null</code>.
+   */
+  protected Border outsideBorder;
+
+  /**
+   * Constructs a CompoundBorder whose inside and outside borders
+   * are both <code>null</code>. While this does not really make
+   * any sense (there exists a class EmptyBorder as well, and not
+   * every Component needs to have a border at all), the API
+   * specification requires the existence of this constructor.
+   *
+   * @see EmptyBorder
+   */
+  public CompoundBorder()
+  {
+    this (null, null);
+  }
+
+  /**
+   * Constructs a CompoundBorder with the specified inside and
+   * outside borders.
+   *
+   * @param outsideBorder the outside border, which is painted to the
+   *        outside of both <code>insideBorder</code> and the enclosed
+   *        component. It is acceptable to pass <code>null</code>, in
+   *        which case no outside border is painted.
+   *
+   * @param insideBorder the inside border, which is painted to
+   *        between <code>outsideBorder</code> and the enclosed
+   *        component. It is acceptable to pass <code>null</code>, in
+   *        which case no inside border is painted.
+   */
+  public CompoundBorder(Border outsideBorder, Border insideBorder)
+  {
+    this.outsideBorder = outsideBorder;
+    this.insideBorder = insideBorder;
+  }
+
+  /**
+   * Determines whether or not this border is opaque. An opaque
+   * border fills every pixel in its area when painting. Partially
+   * translucent borders must return <code>false</code>, or ugly
+   * artifacts can appear on screen.
+   *
+   * @return <code>true</code> if both the inside and outside borders
+   *         are opaque, or <code>false</code> otherwise.
+   */
+  public boolean isBorderOpaque()
+  {
+    // Although the API specification states that this method
+    // returns true if both the inside and outside borders are non-null
+    // and opaque, and false otherwise, a mauve test shows that if both
+    // the inside or outside borders are null, then true is returned.
+    if ((insideBorder == null) && (outsideBorder == null))
+      return true;
+
+    // A mauve test shows that if the inside border has a null value,
+    // then true is returned if the outside border is opaque; if the
+    // outside border has a null value, then true is returned if the
+    // inside border is opaque; else, true is returned if both the
+    // inside and outside borders are opaque.
+    if (insideBorder == null)
+      return outsideBorder.isBorderOpaque();
+    else if (outsideBorder == null)
+      return insideBorder.isBorderOpaque();
+    else
+      return insideBorder.isBorderOpaque() && outsideBorder.isBorderOpaque();
+  }
+
+  /**
+   * Paints the compound border by first painting the outside border,
+   * then painting the inside border tightly nested into the outside.
+   *
+   * @param c the component whose border is to be painted.
+   * @param g the graphics for painting.
+   * @param x the horizontal position for painting the border.
+   * @param y the vertical position for painting the border.
+   * @param width the width of the available area for painting the border.
+   * @param height the height of the available area for painting the border.
+   */
+  public void paintBorder(Component c, Graphics g,
+                          int x, int y, int width, int height)
+  {
+    // If there is an outside border, paint it and reduce the
+    // bounding box by its insets.
+    //
+    if (outsideBorder != null)
+    {
+      Insets outsideInsets;
+
+      outsideBorder.paintBorder(c, g, x, y, width, height);
+      outsideInsets = outsideBorder.getBorderInsets(c);
+
+      x += outsideInsets.left;
+      y += outsideInsets.top;
+
+      // Reduce width and height by the respective extent of the
+      // outside border.
+      width -= outsideInsets.left + outsideInsets.right;
+      height -= outsideInsets.top + outsideInsets.bottom;
+    }
+
+    if (insideBorder != null)
+      insideBorder.paintBorder(c, g, x, y, width, height);
+  }
+
+  /**
+   * Changes the specified insets to the insets of this border,
+   * which is the sum of the insets of the inside and the outside
+   * border.
+   *
+   * @param c the component in the center of this border.
+   * @param insets an Insets object for holding the added insets.
+   *
+   * @return the <code>insets</code> object.
+   */
+  public Insets getBorderInsets(Component c, Insets insets)
+  {
+    Insets borderInsets;
+
+    if (insets == null)
+      insets = new Insets(0, 0, 0, 0);
+    else
+      insets.left = insets.right = insets.top = insets.bottom = 0;
+
+    // If there is an outside border, add it to insets.
+    if (outsideBorder != null)
+    {
+      borderInsets = outsideBorder.getBorderInsets(c);
+      insets.left += borderInsets.left;
+      insets.right += borderInsets.right;
+      insets.top += borderInsets.top;
+      insets.bottom += borderInsets.bottom;
+    }
+
+    // If there is an inside border, add it to insets.
+    if (insideBorder != null)
+    {
+      borderInsets = insideBorder.getBorderInsets(c);
+      insets.left += borderInsets.left;
+      insets.right += borderInsets.right;
+      insets.top += borderInsets.top;
+      insets.bottom += borderInsets.bottom;
+    }
+
+    return insets;
+  }
+
+  /**
+   * Determines the insets of this border, which is the sum of the
+   * insets of the inside and the outside border.
+   *
+   * @param c the component in the center of this border.
+   */
+  public Insets getBorderInsets(Component c)
+  {
+    // It is not clear why CompoundBorder does not simply inherit
+    // the implementation from AbstractBorder. However, we want
+    // to be compatible with the API specification, which overrides
+    // the getBorderInsets(Component) method.
+    return getBorderInsets(c, null);
+  }
+
+  /**
+   * Returns the outside border, which is painted outside both the
+   * bordered Component and the inside border. It is valid for the
+   * result to be <code>null</code>.
+   *
+   * @return The outside border (possibly <code>null</code>).
+   */
+  public Border getOutsideBorder()
+  {
+    return outsideBorder;
+  }
+
+  /**
+   * Returns the inside border, which is painted between the bordered
+   * Component and the outside border. It is valid for the result to
+   * be <code>null</code>.
+   *
+   * @return The inside border (possibly <code>null</code>).
+   */
+  public Border getInsideBorder()
+  {
+    return insideBorder;
+  }
+}