jdk/src/share/classes/javax/swing/border/LineBorder.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/swing/border/LineBorder.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,191 @@
+/*
+ * Copyright 1997-2007 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 javax.swing.border;
+
+import java.awt.Graphics;
+import java.awt.Insets;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Graphics2D;
+import java.awt.Shape;
+import java.awt.geom.Path2D;
+import java.awt.geom.Rectangle2D;
+import java.awt.geom.RoundRectangle2D;
+import java.beans.ConstructorProperties;
+
+/**
+ * A class which implements a line border of arbitrary thickness
+ * and of a single color.
+ * <p>
+ * <strong>Warning:</strong>
+ * Serialized objects of this class will not be compatible with
+ * future Swing releases. The current serialization support is
+ * appropriate for short term storage or RMI between applications running
+ * the same version of Swing.  As of 1.4, support for long term storage
+ * of all JavaBeans<sup><font size="-2">TM</font></sup>
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ *
+ * @author David Kloba
+ */
+public class LineBorder extends AbstractBorder
+{
+    private static Border blackLine;
+    private static Border grayLine;
+
+    protected int thickness;
+    protected Color lineColor;
+    protected boolean roundedCorners;
+
+    /** Convenience method for getting the Color.black LineBorder of thickness 1.
+      */
+    public static Border createBlackLineBorder() {
+        if (blackLine == null) {
+            blackLine = new LineBorder(Color.black, 1);
+        }
+        return blackLine;
+    }
+
+    /** Convenience method for getting the Color.gray LineBorder of thickness 1.
+      */
+    public static Border createGrayLineBorder() {
+        if (grayLine == null) {
+            grayLine = new LineBorder(Color.gray, 1);
+        }
+        return grayLine;
+    }
+
+    /**
+     * Creates a line border with the specified color and a
+     * thickness = 1.
+     * @param color the color for the border
+     */
+    public LineBorder(Color color) {
+        this(color, 1, false);
+    }
+
+    /**
+     * Creates a line border with the specified color and thickness.
+     * @param color the color of the border
+     * @param thickness the thickness of the border
+     */
+    public LineBorder(Color color, int thickness)  {
+        this(color, thickness, false);
+    }
+
+    /**
+     * Creates a line border with the specified color, thickness,
+     * and corner shape.
+     * @param color the color of the border
+     * @param thickness the thickness of the border
+     * @param roundedCorners whether or not border corners should be round
+     * @since 1.3
+     */
+    @ConstructorProperties({"lineColor", "thickness", "roundedCorners"})
+    public LineBorder(Color color, int thickness, boolean roundedCorners)  {
+        lineColor = color;
+        this.thickness = thickness;
+        this.roundedCorners = roundedCorners;
+    }
+
+    /**
+     * Paints the border for the specified component with the
+     * specified position and size.
+     * @param c the component for which this border is being painted
+     * @param g the paint graphics
+     * @param x the x position of the painted border
+     * @param y the y position of the painted border
+     * @param width the width of the painted border
+     * @param height the height of the painted border
+     */
+    public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
+        if ((this.thickness > 0) && (g instanceof Graphics2D)) {
+            Graphics2D g2d = (Graphics2D) g;
+
+            Color oldColor = g2d.getColor();
+            g2d.setColor(this.lineColor);
+
+            Shape outer;
+            Shape inner;
+
+            int offs = this.thickness;
+            int size = offs + offs;
+            if (this.roundedCorners) {
+                int arc = offs + size;
+                outer = new RoundRectangle2D.Float(x, y, width, height, arc, arc);
+                inner = new RoundRectangle2D.Float(x + offs, y + offs, width - size, height - size, arc, arc);
+            }
+            else {
+                outer = new Rectangle2D.Float(x, y, width, height);
+                inner = new Rectangle2D.Float(x + offs, y + offs, width - size, height - size);
+            }
+            Path2D path = new Path2D.Float(Path2D.WIND_EVEN_ODD);
+            path.append(outer, false);
+            path.append(inner, false);
+            g2d.fill(path);
+            g2d.setColor(oldColor);
+        }
+    }
+
+    /**
+     * Reinitialize the insets parameter with this Border's current Insets.
+     * @param c the component for which this border insets value applies
+     * @param insets the object to be reinitialized
+     */
+    public Insets getBorderInsets(Component c, Insets insets) {
+        insets.set(thickness, thickness, thickness, thickness);
+        return insets;
+    }
+
+    /**
+     * Returns the color of the border.
+     */
+    public Color getLineColor()     {
+        return lineColor;
+    }
+
+    /**
+     * Returns the thickness of the border.
+     */
+    public int getThickness()       {
+        return thickness;
+    }
+
+    /**
+     * Returns whether this border will be drawn with rounded corners.
+     * @since 1.3
+     */
+    public boolean getRoundedCorners() {
+        return roundedCorners;
+    }
+
+    /**
+     * Returns whether or not the border is opaque.
+     */
+    public boolean isBorderOpaque() {
+        return !roundedCorners;
+    }
+
+}