--- a/jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthSliderUI.java	Mon Mar 16 20:32:45 2015 +0300
+++ b/jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthSliderUI.java	Tue Mar 17 14:38:22 2015 +0400
@@ -308,14 +308,14 @@
     public Dimension getPreferredSize(JComponent c)  {
         recalculateIfInsetsChanged();
         Dimension d = new Dimension(contentRect.width, contentRect.height);
+        Insets i = slider.getInsets();
         if (slider.getOrientation() == JSlider.VERTICAL) {
             d.height = 200;
+            d.height += i.top + i.bottom;
         } else {
             d.width = 200;
+            d.width += i.left + i.right;
         }
-        Insets i = slider.getInsets();
-        d.width += i.left + i.right;
-        d.height += i.top + i.bottom;
         return d;
     }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/plaf/synth/8040328/bug8040328.java	Tue Mar 17 14:38:22 2015 +0400
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+   @bug 8040328
+   @summary JSlider has wrong preferred size with Synth LAF
+   @author Semyon Sadetsky
+*/
+
+import javax.swing.*;
+import javax.swing.plaf.synth.SynthLookAndFeel;
+import java.awt.*;
+import java.io.ByteArrayInputStream;
+
+public class bug8040328 {
+    private static String synthXml = "<synth>" +
+            " <style id=\"all\">" +
+            " <font name=\"Segoe UI\" size=\"12\"/>" +
+            " </style>" +
+            " <bind style=\"all\" type=\"REGION\" key=\".*\"/>" +
+            " <style id=\"slider\">" +
+            " <insets top=\"10\" left=\"5\" bottom=\"10\" right=\"5\"/>" +
+            " </style>" +
+            " <bind style=\"slider\" type=\"region\" key=\"Slider\"/>" +
+            "</synth>";
+
+    public static void main(String[] args) throws Exception {
+        SynthLookAndFeel lookAndFeel = new SynthLookAndFeel();
+        lookAndFeel.load(new ByteArrayInputStream(synthXml.getBytes("UTF8")),
+                bug8040328.class);
+        UIManager.setLookAndFeel(lookAndFeel);
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                final JFrame frame = new JFrame();
+                try {
+                    frame.setUndecorated(true);
+                    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+                    frame.setVisible(true);
+                    test(frame);
+                } finally {
+                    frame.dispose();
+                }
+            }
+        });
+        System.out.println("ok");
+    }
+
+    static void test(JFrame frame) {
+        JSlider hslider = new JSlider(JSlider.HORIZONTAL);
+        hslider.setBackground(Color.DARK_GRAY);
+        frame.getContentPane().add(hslider, BorderLayout.CENTER);
+        frame.getContentPane().setBackground(Color.CYAN);
+        frame.pack();
+        Insets insets = hslider.getInsets();
+        if (hslider.getWidth() != 200 + insets.left + insets.right) {
+            throw new RuntimeException(
+                    "Horizontal slider width is wrong " + hslider.getWidth());
+        }
+        if (hslider.getHeight() != hslider.getMinimumSize().height) {
+            throw new RuntimeException(
+                    "Horizontal slider height is wrong " + hslider.getHeight());
+        }
+        frame.getContentPane().remove(hslider);
+
+        JSlider vslider = new JSlider(JSlider.VERTICAL);
+        frame.getContentPane().add(vslider);
+        frame.pack();
+        insets = vslider.getInsets();
+        if (vslider.getWidth() != vslider.getMinimumSize().width) {
+            throw new RuntimeException(
+                    "Verical slider width is wrong " + vslider.getWidth());
+        }
+        if (vslider.getHeight() != 200 + insets.top + insets.bottom) {
+            throw new RuntimeException(
+                    "Verical slider height is wrong " + vslider.getHeight());
+        }
+    }
+}