Mercurial > projects > dwt2
annotate org.eclipse.draw2d/src/org/eclipse/draw2d/geometry/Insets.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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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 } |