test/jdk/javax/swing/tree/DefaultTreeCellRenderer/7142955/bug7142955.java

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/* @test
   @bug 7142955
   @summary DefaultTreeCellRenderer doesn't honor 'Tree.rendererFillBackground' LAF property
   @author Pavel Porvatov
*/

import javax.swing.*;
import javax.swing.tree.DefaultTreeCellRenderer;
import java.awt.*;
import java.awt.image.BufferedImage;

public class bug7142955 {
    private static final Color TEST_COLOR = Color.RED;

    public static void main(String[] args) throws Exception {
        UIManager.put("Tree.rendererFillBackground", Boolean.FALSE);
        UIManager.put("Tree.textBackground", TEST_COLOR);

        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                int w = 200;
                int h = 100;

                BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);

                Graphics g = image.getGraphics();

                g.setColor(Color.WHITE);
                g.fillRect(0, 0, image.getWidth(), image.getHeight());

                DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();

                renderer.setSize(w, h);
                renderer.paint(g);

                for (int y = 0; y < h; y++) {
                    for (int x = 0; x < w; x++) {
                        if (image.getRGB(x, y) == TEST_COLOR.getRGB()) {
                            throw new RuntimeException("Test bug7142955 failed");
                        }
                    }
                }

                System.out.println("Test bug7142955 passed.");
            }
        });
    }
}