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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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children 6f068362a363
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.draw2d.geometry.Insets;
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14
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15 import java.lang.all;
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16 import tango.text.convert.Format;
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17
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18 /**
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19 * Stores four integers for top, left, bottom, and right measurements.
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20 */
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21 public class Insets
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22 : Cloneable/+, java.io.Serializable+/
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23 {
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24
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25 /** distance from left */
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26 public int left;
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27 /** distance from top*/
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28 public int top;
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29 /** distance from bottom*/
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30 public int bottom;
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31 /** distance from right */
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32 public int right;
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33
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34 static final long serialVersionUID = 1;
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35
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36 /**
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37 * Constructs an Insets with all zeroes.
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38 * @since 2.0
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39 */
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40 public this() { }
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41
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42 /**
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43 * Constructs a new Insets with initial values the same as the provided Insets.
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44 * @param i The insets to copy.
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45 * @since 2.0
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46 */
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47 public this(Insets i) {
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48 this(i.top, i.left, i.bottom, i.right);
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49 }
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50
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51 /**
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52 * Constructs a new Insets with all the sides set to the speicifed value.
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53 * @param i Value applied to all sides of new Insets.
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54 * @since 2.0
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55 */
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56 public this(int i) {
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57 this(i, i, i, i);
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58 }
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59
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60 /**
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61 * Creates a new Insets with the specified top, left, bottom, and right values.
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62 * @param top Value of the top space.
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63 * @param left Value of the left space.
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64 * @param bottom Value of the bottom space.
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65 * @param right Value of the right space.
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66 * @since 2.0
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67 */
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68 public this(int top, int left, int bottom, int right) {
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69 this.top = top;
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70 this.left = left;
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71 this.bottom = bottom;
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72 this.right = right;
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73 }
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74
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75 /**
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76 * Adds the values of the specified Insets to this Insets' values.
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77 * @return <code>this</code> for convenience
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78 * @param insets the Insets being added
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79 * @since 2.0
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80 */
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81 public Insets add(Insets insets) {
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82 top += insets.top;
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83 bottom += insets.bottom;
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84 left += insets.left;
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85 right += insets.right;
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86 return this;
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87 }
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88
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89 /**
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90 * Test for equality.
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91 * The Insets are equal if their top, left, bottom, and
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92 * right values are equivalent.
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93 *
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94 * @param o Object being tested for equality.
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95 * @return true if all values are the same.
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96 * @since 2.0
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97 */
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98 public override int opEquals(Object o) {
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99 if (auto i = cast(Insets)o ) {
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100 return i.top is top
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101 && i.bottom is bottom
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102 && i.left is left
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103 && i.right is right;
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104 }
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105 return false;
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106 }
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107
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108 /**
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109 * Creates an Insets representing the sum of this Insets with the specified Insets.
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110 * @param insets Insets to be added
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111 * @return A new Insets
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112 * @since 2.0
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113 */
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114 public Insets getAdded(Insets insets) {
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115 return (new Insets(this)).add(insets);
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116 }
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117
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118 /**
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119 * Returns the height for this Insets, equal to <code>top</code> + <code>bottom</code>.
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120 * @return The sum of top + bottom
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121 * @see #getWidth()
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122 * @since 2.0
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123 */
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124 public int getHeight() {
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125 return top + bottom;
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126 }
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127
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128 /**
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129 * Creates a new Insets with transposed values.
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130 * Top and Left are transposed.
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131 * Bottom and Right are transposed.
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132 * @return New Insets with the transposed values.
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133 * @since 2.0
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134 */
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135 public Insets getTransposed() {
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136 return (new Insets(this)).transpose();
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137 }
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138
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139 /**
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140 * Returns the width for this Insets, equal to <code>left</code> + <code>right</code>.
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141 * @return The sum of left + right
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142 * @see #getHeight()
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143 * @since 2.0
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144 */
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145 public int getWidth() {
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146 return left + right;
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147 }
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148
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149 /**
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150 * @see java.lang.Object#toHash()
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151 */
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152 public override hash_t toHash() {
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153 return top * 7 + left * 2 + bottom * 31 + right * 37;
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154 }
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155
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156
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157 /**
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158 * Returns true if all values are 0.
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159 * @return true if all values are 0
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160 * @since 2.0
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161 */
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162 public bool isEmpty() {
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163 return (left is 0 && right is 0 && top is 0 && bottom is 0);
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164 }
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165
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166 /**
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167 * @return String representation.
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168 * @since 2.0
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169 */
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170 public override String toString() {
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171 return Format( "Insets(t={}, l={}, b={}, r={})", top, left, bottom, right );
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172 }
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173
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174 /**
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175 * Transposes this object. Top and Left are exchanged. Bottom and Right are exchanged.
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176 * Can be used in orientation changes.
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177 * @return <code>this</code> for convenience
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178 * @since 2.0
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179 */
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180 public Insets transpose() {
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181 int temp = top;
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182 top = left;
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183 left = temp;
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184 temp = right;
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185 right = bottom;
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186 bottom = temp;
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187 return this;
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188 }
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189
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190 }