MetalHiDPISliderThumbTest.java revision 15395:1457d59f0853
1238104Sdes/* 2238104Sdes * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3238104Sdes * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4238104Sdes * 5238104Sdes * This code is free software; you can redistribute it and/or modify it 6238104Sdes * under the terms of the GNU General Public License version 2 only, as 7238104Sdes * published by the Free Software Foundation. 8238104Sdes * 9238104Sdes * This code is distributed in the hope that it will be useful, but WITHOUT 10238104Sdes * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11238104Sdes * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12238104Sdes * version 2 for more details (a copy is included in the LICENSE file that 13238104Sdes * accompanied this code). 14238104Sdes * 15238104Sdes * You should have received a copy of the GNU General Public License version 16238104Sdes * 2 along with this work; if not, write to the Free Software Foundation, 17238104Sdes * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18238104Sdes * 19238104Sdes * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20238104Sdes * or visit www.oracle.com if you need additional information or have any 21238104Sdes * questions. 22238104Sdes */ 23238104Sdes 24238104Sdesimport java.awt.Dimension; 25238104Sdesimport java.awt.Graphics2D; 26238104Sdesimport java.awt.image.BufferedImage; 27238104Sdesimport javax.swing.JSlider; 28238104Sdesimport javax.swing.SwingUtilities; 29238104Sdesimport javax.swing.UIManager; 30238104Sdesimport javax.swing.plaf.metal.MetalLookAndFeel; 31238104Sdes 32238104Sdes/* 33238104Sdes * @test 34238104Sdes * @bug 8162856 35238104Sdes * @summary Bad rendering of Swing UI controls with Metal L&F on HiDPI display 36238104Sdes * @run main MetalHiDPISliderThumbTest 37238104Sdes */ 38238104Sdespublic class MetalHiDPISliderThumbTest { 39238104Sdes 40238104Sdes public static void main(String[] args) throws Exception { 41238104Sdes 42238104Sdes SwingUtilities.invokeAndWait(() -> { 43238104Sdes 44238104Sdes try { 45238104Sdes UIManager.setLookAndFeel(new MetalLookAndFeel()); 46238104Sdes } catch (Exception e) { 47238104Sdes throw new RuntimeException(e); 48238104Sdes } 49238104Sdes 50238104Sdes if (!testSliderThumb(true)) { 51238104Sdes throw new RuntimeException("Horizontal Slider Thumb is not scaled!"); 52238104Sdes } 53238104Sdes 54238104Sdes if (!testSliderThumb(false)) { 55238104Sdes throw new RuntimeException("Vertical Slider Thumb is not scaled!"); 56238104Sdes } 57238104Sdes }); 58238104Sdes } 59238104Sdes 60238104Sdes private static boolean testSliderThumb(boolean horizontal) { 61238104Sdes int scale = 3; 62238104Sdes 63238104Sdes int w = horizontal ? 100 : 20; 64238104Sdes int h = horizontal ? 20 : 100; 65238104Sdes 66238104Sdes JSlider testSlider = new JSlider(); 67238104Sdes testSlider.setSize(w, h); 68238104Sdes Dimension size = new Dimension(w, h); 69238104Sdes testSlider.setPreferredSize(size); 70238104Sdes testSlider.setMinimumSize(size); 71238104Sdes testSlider.setMaximumSize(size); 72238104Sdes testSlider.setOrientation(horizontal ? JSlider.HORIZONTAL : JSlider.VERTICAL); 73238104Sdes 74238104Sdes int sw = scale * w; 75238104Sdes int sh = scale * h; 76238104Sdes 77238104Sdes final BufferedImage img = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_RGB); 78238104Sdes 79238104Sdes Graphics2D g = img.createGraphics(); 80238104Sdes g.scale(scale, scale); 81238104Sdes testSlider.paint(g); 82238104Sdes g.dispose(); 83238104Sdes 84238104Sdes if (horizontal) { 85238104Sdes int y = sh / 2; 86238104Sdes 87238104Sdes int xMin = 0; 88238104Sdes int rgb = img.getRGB(xMin, y); 89238104Sdes for (int i = 0; i < sw; i++) { 90238104Sdes if (img.getRGB(i, y) != rgb) { 91238104Sdes xMin = i; 92238104Sdes break; 93238104Sdes } 94238104Sdes } 95238104Sdes 96238104Sdes int xMax = sw - 1; 97238104Sdes rgb = img.getRGB(xMax, y); 98238104Sdes for (int i = sw - 1; i > 0; i--) { 99238104Sdes if (img.getRGB(i, y) != rgb) { 100238104Sdes xMax = i; 101238104Sdes break; 102238104Sdes } 103238104Sdes } 104238104Sdes 105238104Sdes int d = 3 * scale; 106238104Sdes int xc = (xMin + xMax) / 2 - d; 107238104Sdes rgb = img.getRGB(xc, y); 108238104Sdes 109238104Sdes for (int x = xMin + d; x < xc; x++) { 110238104Sdes if (img.getRGB(x, y) != rgb) { 111238104Sdes return true; 112238104Sdes } 113238104Sdes } 114238104Sdes } else { 115238104Sdes int x = sw / 2; 116238104Sdes 117238104Sdes int yMin = 0; 118238104Sdes int rgb = img.getRGB(x, yMin); 119238104Sdes for (int i = 0; i < sh; i++) { 120238104Sdes if (img.getRGB(x, i) != rgb) { 121238104Sdes yMin = i; 122238104Sdes break; 123238104Sdes } 124238104Sdes } 125238104Sdes 126238104Sdes int yMax = sh - 1; 127238104Sdes rgb = img.getRGB(x, yMax); 128238104Sdes for (int i = sh - 1; i > 0; i--) { 129238104Sdes if (img.getRGB(x, i) != rgb) { 130238104Sdes yMax = i; 131238104Sdes break; 132238104Sdes } 133238104Sdes } 134238104Sdes 135238104Sdes int d = 3 * scale; 136238104Sdes int yc = (yMin + yMax) / 2 - d; 137238104Sdes rgb = img.getRGB(x, yc); 138238104Sdes 139238104Sdes for (int y = yMin + d; y < yc; y++) { 140238104Sdes if (img.getRGB(x, y) != rgb) { 141238104Sdes return true; 142238104Sdes } 143238104Sdes } 144238104Sdes } 145238104Sdes return false; 146238104Sdes } 147238104Sdes} 148238104Sdes