1+ /*
2+ * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation.
8+ *
9+ * This code is distributed in the hope that it will be useful, but WITHOUT
10+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12+ * version 2 for more details (a copy is included in the LICENSE file that
13+ * accompanied this code).
14+ *
15+ * You should have received a copy of the GNU General Public License version
16+ * 2 along with this work; if not, write to the Free Software Foundation,
17+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18+ *
19+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20+ * or visit www.oracle.com if you need additional information or have any
21+ * questions.
22+ */
23+
24+
25+ /*
26+ * @test
27+ * @bug 7124282
28+ * @key headful
29+ * @requires (os.family == "mac")
30+ * @summary Checks whether the JTable's focus ring color's RGB color
31+ * diff with selectionBackground is greater in comparison to original
32+ * focus ring (represented by 'Table.cellFocusRing' property in Aqua LAF
33+ * UIDefaults).
34+ * @run main JTableFocusRingTest
35+ */
36+
37+ import java .awt .Color ;
38+ import java .util .Arrays ;
39+ import javax .swing .plaf .BorderUIResource .LineBorderUIResource ;
40+ import javax .swing .SwingUtilities ;
41+ import javax .swing .UIManager ;
42+ import javax .swing .UnsupportedLookAndFeelException ;
43+
44+ public class JTableFocusRingTest {
45+
46+ public static void main (String [] args ) throws Exception {
47+
48+ try {
49+ UIManager .setLookAndFeel ("com.apple.laf.AquaLookAndFeel" );
50+ } catch (ClassNotFoundException | InstantiationException |
51+ IllegalAccessException | UnsupportedLookAndFeelException e ) {
52+ throw new RuntimeException ("Unsupported Look&Feel Class" );
53+ }
54+ SwingUtilities .invokeAndWait (() -> {
55+
56+ float [] bckRGB = new float [3 ];
57+ float [] oldCellRingRGB = new float [3 ];
58+ float [] newCellRingRGB = new float [3 ];
59+
60+ Color selectionBck = null ;
61+ Color originalRingColor = null ;
62+ Color newRingColor = null ;
63+
64+ // saturation threshold for grayish colors
65+ float satGrayScale = 0.10f ;
66+
67+ if (UIManager .getDefaults ().get ("Table.selectionBackground" ) != null
68+ && UIManager .getDefaults ().get ("Table.selectionBackground" )
69+ instanceof Color ) {
70+ selectionBck = (Color ) UIManager .getDefaults ()
71+ .get ("Table.selectionBackground" );
72+ }
73+ if (UIManager .getDefaults ().get ("Table.cellFocusRing" ) != null
74+ && UIManager .getDefaults ().get ("Table.cellFocusRing" )
75+ instanceof Color ) {
76+ originalRingColor = (Color ) UIManager .getDefaults ().get ("Table.cellFocusRing" );
77+ }
78+
79+ if (UIManager .getDefaults ()
80+ .get ("Table.focusCellHighlightBorder" ) != null &&
81+ UIManager .getDefaults ().get ("Table.focusCellHighlightBorder" )
82+ instanceof LineBorderUIResource ) {
83+ LineBorderUIResource cellFocusBorderObj = (LineBorderUIResource )
84+ UIManager .getDefaults ().get ("Table.focusCellHighlightBorder" );
85+ newRingColor = cellFocusBorderObj .getLineColor ();
86+ }
87+
88+ if (selectionBck == null || originalRingColor == null ||
89+ newRingColor == null ) {
90+ throw new RuntimeException ("One or more color values are null" );
91+ }
92+ System .out .println (UIManager .getLookAndFeel ().toString ());
93+ System .out .println ("Selection Background Color: "
94+ + selectionBck .toString ());
95+
96+ System .out .println ("Original FocusRing Color: "
97+ + originalRingColor .toString ());
98+
99+ System .out .println ("Brighter FocusRing Color: "
100+ + newRingColor .toString ());
101+
102+ int redValue = originalRingColor .getRed ();
103+ int greenValue = originalRingColor .getGreen ();
104+ int blueValue = originalRingColor .getBlue ();
105+
106+ float [] hsbValues = new float [3 ];
107+ Color .RGBtoHSB (redValue , greenValue , blueValue , hsbValues );
108+
109+ System .out .println ("Original Focus Ring Hue, Saturation and" +
110+ " Brightness: " + Arrays .toString (hsbValues ));
111+
112+ // Edge case - Original Focus ring color: WHITE/BLACK/GRAY
113+ if (((hsbValues [0 ] == 0 && hsbValues [1 ] == 0 )
114+ || hsbValues [1 ] <= satGrayScale ) &&
115+ newRingColor .equals (Color .LIGHT_GRAY )) {
116+ System .out .println ("Original Focus ring color:" +
117+ "WHITE/BLACK/GRAYISH, Cell Focus Ring Color: LIGHT GRAY" );
118+ System .out .println ("Test case passed" );
119+ return ;
120+ }
121+ selectionBck .getRGBColorComponents (bckRGB );
122+ originalRingColor .getRGBColorComponents (oldCellRingRGB );
123+ newRingColor .getRGBColorComponents (newCellRingRGB );
124+
125+ float originalRGBDiff = calculateRGBDiff (oldCellRingRGB , bckRGB );
126+ float brighterRGBDiff = calculateRGBDiff (newCellRingRGB , bckRGB );
127+
128+ System .out .println ("Original RGB Diff: " + originalRGBDiff );
129+ System .out .println ("Brighter RGB Diff: " + brighterRGBDiff );
130+
131+ if (brighterRGBDiff <= originalRGBDiff ) {
132+ throw new RuntimeException ("Cell Focus Ring Not Visible" );
133+ }
134+ });
135+ }
136+
137+ /* calculates the difference between individual RGB components of 2 colors
138+ and returns the total difference. A higher RGB difference is preferred
139+ for a prominent cell highlighter */
140+
141+ private static float calculateRGBDiff (float [] focusRingRGB , float [] bckRGB ) {
142+
143+ float totalRGBDiff = 0 ;
144+ for (int i =0 ; i < focusRingRGB .length ; i ++) {
145+ totalRGBDiff += Math .abs (focusRingRGB [i ] - bckRGB [i ]);
146+ }
147+ return totalRGBDiff ;
148+ }
149+ }
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