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annotate graal/com.oracle.max.base/src/com/sun/max/gui/SpringUtilities.java @ 4231:d713eaf4d288
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author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Thu, 05 Jan 2012 16:09:47 -0800 |
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1 /* |
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2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.max.gui; |
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24 |
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25 import java.awt.*; |
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26 |
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27 import javax.swing.*; |
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28 /** |
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29 * Partially copied from the "Swing Tutorial". |
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30 * Minor changes to comply with our CheckStyle settings. |
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31 * |
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32 * A 1.4 file that provides utility methods for |
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33 * creating form- or grid-style layouts with SpringLayout. |
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34 * These utilities are used by several programs, such as |
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35 * SpringBox and SpringCompactGrid. |
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36 */ |
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37 public final class SpringUtilities { |
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38 private SpringUtilities() { |
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39 } |
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40 |
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41 /** |
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42 * A debugging utility that prints to stdout the component's |
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43 * minimum, preferred, and maximum sizes. |
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44 */ |
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45 public static void printSizes(Component c) { |
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46 System.out.println("minimumSize = " + c.getMinimumSize()); |
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47 System.out.println("preferredSize = " + c.getPreferredSize()); |
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48 System.out.println("maximumSize = " + c.getMaximumSize()); |
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49 } |
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50 |
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51 /** |
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52 * Aligns the first {@code rows} * {@code cols} |
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53 * components of {@code parent} in |
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54 * a grid. Each component is as big as the maximum |
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55 * preferred width and height of the components. |
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56 * The parent is made just big enough to fit them all. |
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57 * |
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58 * @param rows number of rows |
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59 * @param cols number of columns |
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60 * @param initialX x location to start the grid at |
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61 * @param initialY y location to start the grid at |
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62 * @param xPad x padding between cells |
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63 * @param yPad y padding between cells |
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64 */ |
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65 public static void makeGrid(Container parent, |
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66 int rows, int cols, |
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67 int initialX, int initialY, |
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68 int xPad, int yPad) { |
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69 SpringLayout layout; |
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70 try { |
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71 layout = (SpringLayout) parent.getLayout(); |
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72 } catch (ClassCastException exc) { |
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73 System.err.println("The first argument to makeGrid must use SpringLayout."); |
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74 return; |
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75 } |
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76 |
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77 final Spring xPadSpring = Spring.constant(xPad); |
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78 final Spring yPadSpring = Spring.constant(yPad); |
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79 final Spring initialXSpring = Spring.constant(initialX); |
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80 final Spring initialYSpring = Spring.constant(initialY); |
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81 final int max = rows * cols; |
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82 |
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83 //Calculate Springs that are the max of the width/height so that all |
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84 //cells have the same size. |
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85 Spring maxWidthSpring = layout.getConstraints(parent.getComponent(0)). |
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86 getWidth(); |
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87 Spring maxHeightSpring = layout.getConstraints(parent.getComponent(0)). |
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88 getWidth(); |
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89 for (int i = 1; i < max; i++) { |
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90 final SpringLayout.Constraints cons = layout.getConstraints(parent.getComponent(i)); |
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91 |
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92 maxWidthSpring = Spring.max(maxWidthSpring, cons.getWidth()); |
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93 maxHeightSpring = Spring.max(maxHeightSpring, cons.getHeight()); |
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94 } |
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95 |
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96 //Apply the new width/height Spring. This forces all the |
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97 //components to have the same size. |
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98 for (int i = 0; i < max; i++) { |
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99 final SpringLayout.Constraints cons = layout.getConstraints(parent.getComponent(i)); |
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100 |
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101 cons.setWidth(maxWidthSpring); |
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102 cons.setHeight(maxHeightSpring); |
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103 } |
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104 |
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105 //Then adjust the x/y constraints of all the cells so that they |
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106 //are aligned in a grid. |
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107 SpringLayout.Constraints lastCons = null; |
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108 SpringLayout.Constraints lastRowCons = null; |
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109 for (int i = 0; i < max; i++) { |
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110 final SpringLayout.Constraints cons = layout.getConstraints(parent.getComponent(i)); |
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111 if (i % cols == 0) { //start of new row |
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112 lastRowCons = lastCons; |
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113 cons.setX(initialXSpring); |
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114 } else if (lastCons != null) { //x position depends on previous component |
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115 cons.setX(Spring.sum(lastCons.getConstraint(SpringLayout.EAST), |
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116 xPadSpring)); |
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117 } |
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118 |
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119 if (i / cols == 0) { //first row |
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120 cons.setY(initialYSpring); |
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121 } else if (lastRowCons != null) { //y position depends on previous row |
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122 cons.setY(Spring.sum(lastRowCons.getConstraint(SpringLayout.SOUTH), |
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123 yPadSpring)); |
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124 } |
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125 lastCons = cons; |
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126 } |
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127 |
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128 //Set the parent's size. |
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129 final SpringLayout.Constraints pCons = layout.getConstraints(parent); |
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130 if (lastCons != null) { |
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131 pCons.setConstraint(SpringLayout.SOUTH, Spring.sum(Spring.constant(yPad), lastCons.getConstraint(SpringLayout.SOUTH))); |
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132 pCons.setConstraint(SpringLayout.EAST, Spring.sum(Spring.constant(xPad), lastCons.getConstraint(SpringLayout.EAST))); |
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133 } |
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134 } |
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135 |
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136 public static void makeGrid(Container parent, int numberOfColumns) { |
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137 makeGrid(parent, parent.getComponentCount() / numberOfColumns, numberOfColumns, 0, 0, 5, 5); |
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138 } |
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139 |
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140 /* Used by makeCompactGrid. */ |
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141 private static SpringLayout.Constraints getConstraintsForCell( |
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142 int row, int col, |
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143 Container parent, |
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144 int cols) { |
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145 final SpringLayout layout = (SpringLayout) parent.getLayout(); |
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146 final Component c = parent.getComponent(row * cols + col); |
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147 return layout.getConstraints(c); |
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148 } |
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149 |
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150 /** |
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151 * Aligns the first {@code rows} * {@code cols} |
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152 * components of {@code parent} in |
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153 * a grid. Each component in a column is as wide as the maximum |
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154 * preferred width of the components in that column; |
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155 * height is similarly determined for each row. |
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156 * The parent is made just big enough to fit them all. |
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157 * |
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158 * @param rows number of rows |
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159 * @param cols number of columns |
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160 * @param initialX x location to start the grid at |
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161 * @param initialY y location to start the grid at |
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162 * @param xPad x padding between cells |
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163 * @param yPad y padding between cells |
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164 */ |
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165 public static void makeCompactGrid(Container parent, |
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166 int rows, int cols, |
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167 int initialX, int initialY, |
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168 int xPad, int yPad) { |
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169 SpringLayout layout; |
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170 try { |
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171 layout = (SpringLayout) parent.getLayout(); |
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172 } catch (ClassCastException exc) { |
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173 System.err.println("The first argument to makeCompactGrid must use SpringLayout."); |
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174 return; |
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175 } |
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176 |
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177 //Align all cells in each column and make them the same width. |
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178 Spring x = Spring.constant(initialX); |
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179 for (int c = 0; c < cols; c++) { |
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180 Spring width = Spring.constant(0); |
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181 for (int r = 0; r < rows; r++) { |
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182 width = Spring.max(width, |
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183 getConstraintsForCell(r, c, parent, cols). |
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184 getWidth()); |
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185 } |
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186 for (int r = 0; r < rows; r++) { |
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187 final SpringLayout.Constraints constraints = getConstraintsForCell(r, c, parent, cols); |
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188 constraints.setX(x); |
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189 constraints.setWidth(width); |
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190 } |
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191 x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad))); |
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192 } |
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193 |
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194 //Align all cells in each row and make them the same height. |
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195 Spring y = Spring.constant(initialY); |
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196 for (int r = 0; r < rows; r++) { |
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197 Spring height = Spring.constant(0); |
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198 for (int c = 0; c < cols; c++) { |
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199 height = Spring.max(height, |
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200 getConstraintsForCell(r, c, parent, cols). |
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201 getHeight()); |
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202 } |
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203 for (int c = 0; c < cols; c++) { |
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204 final SpringLayout.Constraints constraints = getConstraintsForCell(r, c, parent, cols); |
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205 constraints.setY(y); |
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206 constraints.setHeight(height); |
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207 } |
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208 y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad))); |
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209 } |
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210 |
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211 //Set the parent's size. |
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212 final SpringLayout.Constraints pCons = layout.getConstraints(parent); |
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213 pCons.setConstraint(SpringLayout.SOUTH, y); |
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214 pCons.setConstraint(SpringLayout.EAST, x); |
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215 } |
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216 |
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217 public static void makeCompactGrid(Container parent, int numberOfColumns) { |
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218 makeCompactGrid(parent, parent.getComponentCount() / numberOfColumns, numberOfColumns, 0, 0, 3, 3); |
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219 } |
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220 |
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221 } |