6910490: MatteBorder JScrollpane interaction

Reviewed-by: alexp

jdk/src/share/classes/javax/swing/border/MatteBorder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1997-2010 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
@@ -26,7 +26,6 @@ package javax.swing.border;
 
 import java.awt.Graphics;
 import java.awt.Insets;
-import java.awt.Rectangle;
 import java.awt.Component;
 import java.awt.Color;
 
@@ -133,63 +132,29 @@ public class MatteBorder extends EmptyBorder
             g.fillRect(width - insets.right, 0, insets.right, height - insets.bottom);
 
         } else if (tileIcon != null) {
-
             int tileW = tileIcon.getIconWidth();
             int tileH = tileIcon.getIconHeight();
-            int xpos, ypos, startx, starty;
-            Graphics cg;
-
-            // Paint top matte edge
-            cg = g.create();
-            cg.setClip(0, 0, width, insets.top);
-            for (ypos = 0; insets.top - ypos > 0; ypos += tileH) {
-                for (xpos = 0; width - xpos > 0; xpos += tileW) {
-                    tileIcon.paintIcon(c, cg, xpos, ypos);
-                }
-            }
-            cg.dispose();
-
-            // Paint left matte edge
-            cg = g.create();
-            cg.setClip(0, insets.top, insets.left, height - insets.top);
-            starty = insets.top - (insets.top%tileH);
-            startx = 0;
-            for (ypos = starty; height - ypos > 0; ypos += tileH) {
-                for (xpos = startx; insets.left - xpos > 0; xpos += tileW) {
-                    tileIcon.paintIcon(c, cg, xpos, ypos);
-                }
-            }
-            cg.dispose();
-
-            // Paint bottom matte edge
-            cg = g.create();
-            cg.setClip(insets.left, height - insets.bottom, width - insets.left, insets.bottom);
-            starty = (height - insets.bottom) - ((height - insets.bottom)%tileH);
-            startx = insets.left - (insets.left%tileW);
-            for (ypos = starty; height - ypos > 0; ypos += tileH) {
-                for (xpos = startx; width - xpos > 0; xpos += tileW) {
-                    tileIcon.paintIcon(c, cg, xpos, ypos);
-                }
-            }
-            cg.dispose();
-
-            // Paint right matte edge
-            cg = g.create();
-            cg.setClip(width - insets.right, insets.top, insets.right, height - insets.top - insets.bottom);
-            starty = insets.top - (insets.top%tileH);
-            startx = width - insets.right - ((width - insets.right)%tileW);
-            for (ypos = starty; height - ypos > 0; ypos += tileH) {
-                for (xpos = startx; width - xpos > 0; xpos += tileW) {
-                    tileIcon.paintIcon(c, cg, xpos, ypos);
-                }
-            }
-            cg.dispose();
+            paintEdge(c, g, 0, 0, width - insets.right, insets.top, tileW, tileH);
+            paintEdge(c, g, 0, insets.top, insets.left, height - insets.top, tileW, tileH);
+            paintEdge(c, g, insets.left, height - insets.bottom, width - insets.left, insets.bottom, tileW, tileH);
+            paintEdge(c, g, width - insets.right, 0, insets.right, height - insets.bottom, tileW, tileH);
         }
         g.translate(-x, -y);
         g.setColor(oldColor);
 
     }
 
+    private void paintEdge(Component c, Graphics g, int x, int y, int width, int height, int tileW, int tileH) {
+        g = g.create(x, y, width, height);
+        int sY = -(y % tileH);
+        for (x = -(x % tileW); x < width; x += tileW) {
+            for (y = sY; y < height; y += tileH) {
+                this.tileIcon.paintIcon(c, g, x, y);
+            }
+        }
+        g.dispose();
+    }
+
     /**
      * Reinitialize the insets parameter with this Border's current Insets.
      * @param c the component for which this border insets value applies

jdk/test/javax/swing/border/Test6910490.html

@@ -0,0 +1,9 @@
+<html>
+<body>
+If the border is painted over scroll bars then test fails.
+Otherwise test passes.
+
+<applet width="600" height="300" code="Test6910490.class">
+</applet>
+</body>
+</html>

jdk/test/javax/swing/border/Test6910490.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2010 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.
+ *
+ * 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.
+ */
+
+import static java.awt.Color.RED;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Insets;
+import javax.swing.Icon;
+import javax.swing.JApplet;
+import javax.swing.JButton;
+import javax.swing.JScrollPane;
+import javax.swing.JSplitPane;
+import javax.swing.border.MatteBorder;
+
+/*
+ * @test
+ * @bug 6910490
+ * @summary Tests a matte border around a component inside a scroll pane.
+ * @author Sergey Malenkov
+ * @run applet/manual=yesno Test6910490.html
+ */
+
+public class Test6910490 extends JApplet implements Icon {
+
+    @Override
+    public void init() {
+        Insets insets = new Insets(10, 10, 10, 10);
+        Dimension size = new Dimension(getWidth() / 2, getHeight());
+        JSplitPane pane = new JSplitPane(
+                JSplitPane.HORIZONTAL_SPLIT,
+                create("Color", size, new MatteBorder(insets, RED)),
+                create("Icon", size, new MatteBorder(insets, this)));
+        pane.setDividerLocation(size.width - pane.getDividerSize() / 2);
+        add(pane);
+    }
+
+    private JScrollPane create(String name, Dimension size, MatteBorder border) {
+        JButton button = new JButton(name);
+        button.setPreferredSize(size);
+        button.setBorder(border);
+        return new JScrollPane(button);
+    }
+
+    public int getIconWidth() {
+        return 10;
+    }
+
+    public int getIconHeight() {
+        return 10;
+    }
+
+    public void paintIcon(Component c, Graphics g, int x, int y) {
+        g.setColor(RED);
+        g.fillRect(x, y, getIconWidth(), getIconHeight());
+    }
+}