1 /*
2 * Copyright (c) 1998, 2014, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javax.swing.colorchooser;
27
28 import javax.swing.*;
29 import java.awt.*;
30 import java.awt.event.*;
31 import javax.swing.event.*;
32 import javax.swing.text.*;
33 import java.io.Serializable;
34
35
36 /**
37 * A better GridLayout class
38 *
39 * @author Steve Wilson
40 */
41 class SmartGridLayout implements LayoutManager, Serializable {
42 private static final long serialVersionUID = -8480277825494401985L;
43
44 int rows = 2;
45 int columns = 2;
46 int xGap = 2;
47 int yGap = 2;
48 int componentCount = 0;
49 Component[][] layoutGrid;
50
51
52 public SmartGridLayout(int numColumns, int numRows) {
53 rows = numRows;
54 columns = numColumns;
55 layoutGrid = new Component[numColumns][numRows];
56
57 }
58
59
60 public void layoutContainer(Container c) {
61
62 buildLayoutGrid(c);
63
64 int[] rowHeights = new int[rows];
65 int[] columnWidths = new int[columns];
66
67 for (int row = 0; row < rows; row++) {
68 rowHeights[row] = computeRowHeight(row);
69 }
70
71 for (int column = 0; column < columns; column++) {
72 columnWidths[column] = computeColumnWidth(column);
73 }
74
75
76 Insets insets = c.getInsets();
77
78 if (c.getComponentOrientation().isLeftToRight()) {
79 int horizLoc = insets.left;
80 for (int column = 0; column < columns; column++) {
81 int vertLoc = insets.top;
82
83 for (int row = 0; row < rows; row++) {
84 Component current = layoutGrid[column][row];
85
86 current.setBounds(horizLoc, vertLoc, columnWidths[column], rowHeights[row]);
87 // System.out.println(current.getBounds());
88 vertLoc += (rowHeights[row] + yGap);
89 }
90 horizLoc += (columnWidths[column] + xGap );
91 }
92 } else {
93 int horizLoc = c.getWidth() - insets.right;
94 for (int column = 0; column < columns; column++) {
95 int vertLoc = insets.top;
96 horizLoc -= columnWidths[column];
97
98 for (int row = 0; row < rows; row++) {
99 Component current = layoutGrid[column][row];
100
101 current.setBounds(horizLoc, vertLoc, columnWidths[column], rowHeights[row]);
102 // System.out.println(current.getBounds());
103 vertLoc += (rowHeights[row] + yGap);
104 }
105 horizLoc -= xGap;
106 }
107 }
108
109
110
111 }
112
113 public Dimension minimumLayoutSize(Container c) {
114
115 buildLayoutGrid(c);
116 Insets insets = c.getInsets();
117
118
119
120 int height = 0;
121 int width = 0;
122
123 for (int row = 0; row < rows; row++) {
124 height += computeRowHeight(row);
125 }
126
127 for (int column = 0; column < columns; column++) {
128 width += computeColumnWidth(column);
129 }
130
131 height += (yGap * (rows - 1)) + insets.top + insets.bottom;
132 width += (xGap * (columns - 1)) + insets.right + insets.left;
133
134 return new Dimension(width, height);
135
136
137 }
138
139 public Dimension preferredLayoutSize(Container c) {
140 return minimumLayoutSize(c);
141 }
142
143
144 public void addLayoutComponent(String s, Component c) {}
145
146 public void removeLayoutComponent(Component c) {}
147
148
149 private void buildLayoutGrid(Container c) {
150
151 Component[] children = c.getComponents();
152
153 for (int componentCount = 0; componentCount < children.length; componentCount++) {
154 // System.out.println("Children: " +componentCount);
155 int row = 0;
156 int column = 0;
157
158 if (componentCount != 0) {
159 column = componentCount % columns;
160 row = (componentCount - column) / columns;
161 }
162
163 // System.out.println("inserting into: "+ column + " " + row);
164
165 layoutGrid[column][row] = children[componentCount];
166 }
167 }
168
169 private int computeColumnWidth(int columnNum) {
170 int maxWidth = 1;
171 for (int row = 0; row < rows; row++) {
172 int width = layoutGrid[columnNum][row].getPreferredSize().width;
173 if (width > maxWidth) {
174 maxWidth = width;
175 }
176 }
177 return maxWidth;
178 }
179
180 private int computeRowHeight(int rowNum) {
181 int maxHeight = 1;
182 for (int column = 0; column < columns; column++) {
183 int height = layoutGrid[column][rowNum].getPreferredSize().height;
184 if (height > maxHeight) {
185 maxHeight = height;
186 }
187 }
188 return maxHeight;
189 }
190
191 }