1 | /*
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2 | * Copyright 2005 Paul Hinds
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 | package org.tp23.gui;
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17 |
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18 | import java.awt.GridBagConstraints;
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19 | import java.awt.Insets;
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20 | /**
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21 | * GBCF Grib Bag Constraints Factory. This class exists mostly
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22 | * for tidying up code that used the exsivly verbose GridBagConstraints
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23 | * object, hence the shortened class name.
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24 | * By default a two column equal with table is assumed, to support other
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25 | * column layouts use the constructor that take an array of column wieghts
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26 | * Factory class for generating constraints for a equal width column table.
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27 | * the table is similar to the following table rendered in HTML
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28 | * <table border="2">
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29 | * <tr>
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30 | * <td>data</td><td>data</td>
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31 | * </tr>
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32 | * <tr>
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33 | * <td colspan="2">data</td>
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34 | * </tr>
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35 | * <tr>
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36 | * <td>data</td><td>data</td>
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37 | * </tr>
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38 | * <tr>
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39 | * <td>data</td><td>data</td>
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40 | * </tr>
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41 | * <table>
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42 | * @author not attributable
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43 | * @version 1.0
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44 | */
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45 | public class GBCF {
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46 |
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47 | protected Insets insets = new Insets(1,4,1,4);
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48 | protected Insets noinsets = new Insets(0,0,0,0);
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49 | protected double[] columnWeights= new double[]{0.5,0.5};
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50 |
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51 | public GBCF(){
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52 |
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53 | }
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54 | /**
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55 | * to support more than two columns or vary the column wieghtings
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56 | * @param columnWeights double[]
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57 | */
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58 | public GBCF(double[] columnWeights){
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59 | this.columnWeights=columnWeights;
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60 | }
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61 | /**
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62 | *
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63 | * @param row int the 0 indexed row
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64 | * @param col int the 0 indexed column
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65 | * @param span boolean does cell span both columns
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66 | * @return GridBagConstraints
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67 | */
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68 | public GridBagConstraints getCell(int row,int col){
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69 | return new GridBagConstraints(col, //gridx
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70 | row, //gridy
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71 | 1, //gridwidth
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72 | 1, //gridheight
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73 | columnWeights[col],//weightx
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74 | 0.0, //weithty
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75 | GridBagConstraints.WEST, // anchor
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76 | GridBagConstraints.NONE, //fill
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77 | insets, // insets
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78 | 1, //ipadx
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79 | 1 //ipady
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80 | );
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81 | }
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82 | /**
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83 | *
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84 | * @param row int the 0 indexed row
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85 | * @param first boolean is this the first column or the second
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86 | * @param span boolean does cell span both columns
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87 | * @return GridBagConstraints
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88 | */
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89 | public GridBagConstraints getSpan(int row){
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90 | return new GridBagConstraints(0, //gridx
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91 | row, //gridy
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92 | 2, //gridwidth
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93 | 1, //gridheight
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94 | columnWeights[0],//weightx
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95 | 0.0, //weithty
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96 | GridBagConstraints.WEST, // anchor
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97 | GridBagConstraints.NONE, //fill
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98 | insets, // insets
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99 | 1, //ipadx
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100 | 1 //ipady
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101 | );
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102 | }
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103 | public GridBagConstraints getVertGlue(int row){
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104 | return new GridBagConstraints(0, //gridx
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105 | row, //gridy
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106 | 2, //gridwidth
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107 | 1, //gridheight
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108 | columnWeights[0],//weightx
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109 | 1.0, //weithty
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110 | GridBagConstraints.NORTHWEST, // anchor
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111 | GridBagConstraints.NONE, //fill
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112 | noinsets, // insets
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113 | 0, //ipadx
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114 | 0 //ipady
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115 | );
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116 | }
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117 | }
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