8077409: Drawing deviates when validate() is invoked on java.awt.ScrollPane

Reviewed-by: bae

src/share/classes/java/awt/ScrollPane.java

@@ -496,9 +496,8 @@ public class ScrollPane extends Container implements Accessible {
         Point p = getScrollPosition();
         Dimension cs = calculateChildSize();
         Dimension vs = getViewportSize();
-        Insets i = getInsets();
 
-        c.reshape(i.left - p.x, i.top - p.y, cs.width, cs.height);
+        c.reshape(- p.x, - p.y, cs.width, cs.height);
         ScrollPanePeer peer = (ScrollPanePeer)this.peer;
         if (peer != null) {
             peer.childResized(cs.width, cs.height);

test/java/awt/ScrollPane/bug8077409Test.java

+/*
+ * 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 8077409
+   @summary Drawing deviates when validate() is invoked on java.awt.ScrollPane
+   @author mikhail.cherkasov@oracle.com
+   @run main bug8077409Test
+*/
+
+
+import java.awt.*;
+import java.awt.event.*;
+
+public class bug8077409Test extends Frame {
+  ScrollPane pane;
+  MyCanvas myCanvas;
+
+  class MyCanvas extends Canvas {
+    public Dimension getPreferredSize() {
+      return new Dimension(400, 800);
+    }
+
+    public void paint(Graphics g) {
+      g.setColor(Color.BLACK);
+      g.drawLine(0, 0, 399, 0);
+      g.setColor(Color.RED);
+      g.drawLine(0, 1, 399, 1);
+      g.setColor(Color.BLUE);
+      g.drawLine(0, 2, 399, 2);
+      g.setColor(Color.GREEN);
+      g.drawLine(0, 3, 399, 3);
+    }
+
+  }
+
+  public bug8077409Test() {
+    super();
+    setLayout(new BorderLayout());
+    pane = new ScrollPane();
+
+    myCanvas = new MyCanvas();
+    pane.add(myCanvas);
+
+    add(pane, BorderLayout.CENTER);
+    setSize(320, 480);
+
+  }
+
+  @Override
+  protected void processKeyEvent(KeyEvent e) {
+    super.processKeyEvent(e);
+
+  }
+
+  public static void main(String[] args) throws AWTException, InterruptedException {
+    final bug8077409Test obj = new bug8077409Test();
+    obj.setVisible(true);
+    Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
+      @Override
+      public void eventDispatched(AWTEvent e) {
+        KeyEvent keyEvent = (KeyEvent) e;
+        if(keyEvent.getID() == KeyEvent.KEY_RELEASED) {
+            if (keyEvent.getKeyCode() == KeyEvent.VK_1) {
+              System.out.println(obj.pane.toString());
+              System.out.println("obj.myCanvas.pos: " + obj.myCanvas.getBounds());
+              System.out.println(obj.myCanvas.toString());
+            }  else if (keyEvent.getKeyCode() == KeyEvent.VK_2) {
+              obj.repaint();
+           } else if (keyEvent.getKeyCode() == KeyEvent.VK_DOWN) {
+              Point scrollPosition = obj.pane.getScrollPosition();
+              scrollPosition.translate(0, 1);
+              obj.pane.setScrollPosition(scrollPosition);
+            } else if (keyEvent.getKeyCode() == KeyEvent.VK_UP) {
+              Point scrollPosition = obj.pane.getScrollPosition();
+              scrollPosition.translate(0, -1);
+              obj.pane.setScrollPosition(scrollPosition);
+            } else if (keyEvent.getKeyCode() == KeyEvent.VK_SPACE) {
+              obj.pane.validate();
+            }
+          }
+        }
+    }, AWTEvent.KEY_EVENT_MASK);
+      Point scrollPosition = obj.pane.getScrollPosition();
+      scrollPosition.translate(0, 1);
+      obj.pane.setScrollPosition(scrollPosition);
+
+      int y = obj.pane.getComponent(0).getLocation().y;
+      obj.pane.validate();
+      if(y != obj.pane.getComponent(0).getLocation().y){
+          throw new RuntimeException("Wrong position of component in ScrollPane");
+      }
+  }
+
+}
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