148 lines
4.4 KiB
Java
148 lines
4.4 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.Dimension;
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import java.awt.Graphics2D;
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import java.awt.image.BufferedImage;
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import javax.swing.JSlider;
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import javax.swing.SwingUtilities;
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import javax.swing.UIManager;
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import javax.swing.plaf.metal.MetalLookAndFeel;
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/*
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* @test
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* @bug 8162856
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* @summary Bad rendering of Swing UI controls with Metal L&F on HiDPI display
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* @run main MetalHiDPISliderThumbTest
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*/
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public class MetalHiDPISliderThumbTest {
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public static void main(String[] args) throws Exception {
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SwingUtilities.invokeAndWait(() -> {
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try {
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UIManager.setLookAndFeel(new MetalLookAndFeel());
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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if (!testSliderThumb(true)) {
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throw new RuntimeException("Horizontal Slider Thumb is not scaled!");
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}
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if (!testSliderThumb(false)) {
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throw new RuntimeException("Vertical Slider Thumb is not scaled!");
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}
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});
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}
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private static boolean testSliderThumb(boolean horizontal) {
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int scale = 3;
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int w = horizontal ? 100 : 20;
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int h = horizontal ? 20 : 100;
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JSlider testSlider = new JSlider();
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testSlider.setSize(w, h);
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Dimension size = new Dimension(w, h);
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testSlider.setPreferredSize(size);
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testSlider.setMinimumSize(size);
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testSlider.setMaximumSize(size);
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testSlider.setOrientation(horizontal ? JSlider.HORIZONTAL : JSlider.VERTICAL);
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int sw = scale * w;
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int sh = scale * h;
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final BufferedImage img = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_RGB);
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Graphics2D g = img.createGraphics();
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g.scale(scale, scale);
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testSlider.paint(g);
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g.dispose();
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if (horizontal) {
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int y = sh / 2;
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int xMin = 0;
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int rgb = img.getRGB(xMin, y);
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for (int i = 0; i < sw; i++) {
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if (img.getRGB(i, y) != rgb) {
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xMin = i;
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break;
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}
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}
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int xMax = sw - 1;
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rgb = img.getRGB(xMax, y);
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for (int i = sw - 1; i > 0; i--) {
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if (img.getRGB(i, y) != rgb) {
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xMax = i;
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break;
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}
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}
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int d = 3 * scale;
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int xc = (xMin + xMax) / 2 - d;
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rgb = img.getRGB(xc, y);
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for (int x = xMin + d; x < xc; x++) {
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if (img.getRGB(x, y) != rgb) {
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return true;
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}
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}
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} else {
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int x = sw / 2;
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int yMin = 0;
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int rgb = img.getRGB(x, yMin);
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for (int i = 0; i < sh; i++) {
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if (img.getRGB(x, i) != rgb) {
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yMin = i;
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break;
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}
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}
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int yMax = sh - 1;
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rgb = img.getRGB(x, yMax);
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for (int i = sh - 1; i > 0; i--) {
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if (img.getRGB(x, i) != rgb) {
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yMax = i;
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break;
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}
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}
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int d = 3 * scale;
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int yc = (yMin + yMax) / 2 - d;
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rgb = img.getRGB(x, yc);
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for (int y = yMin + d; y < yc; y++) {
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if (img.getRGB(x, y) != rgb) {
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return true;
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}
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}
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}
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return false;
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}
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}
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