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annotate org.eclipse.draw2d/src/org/eclipse/draw2d/geometry/Dimension.d @ 17:6f068362a363

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Remove direct import of tango.text.convert.Format
author Frank Benoit <benoit@tionex.de>
date Wed, 18 Mar 2009 09:09:23 +0100
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 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.Dimension;
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15 import org.eclipse.draw2d.geometry.Point;
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16
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17 import java.lang.all;
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18
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19 import org.eclipse.draw2d.geometry.Translatable;
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20 static import org.eclipse.swt.graphics.Point;
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21 static import org.eclipse.swt.graphics.Image;
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22 static import org.eclipse.swt.graphics.Rectangle;
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23
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24 /**
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25 * Stores an integer width and height. This class provides various methods for
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26 * manipulating this Dimension or creating new derived Objects.
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27 */
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28 public class Dimension
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29 : Cloneable/+, java.io.Serializable+/, Translatable
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30 {
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31
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32 /**A singleton for use in short calculations. Use to avoid newing unnecessary objects.*/
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33 private static Dimension SINGLETON_;
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34 public static Dimension SINGLETON(){
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35 if( SINGLETON_ is null ){
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36 synchronized( Dimension.classinfo ){
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37 if( SINGLETON_ is null ){
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38 SINGLETON_ = new Dimension();
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39 }
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40 }
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41 }
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42 return SINGLETON_;
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43 }
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44
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45 /**The width.*/
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46 public int width;
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47 /**The height. */
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48 public int height;
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49
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50 static final long serialVersionUID = 1;
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51
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52 /**
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53 * Constructs a Dimension of zero width and height.
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54 *
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55 * @since 2.0
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56 */
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57 public this() { }
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58
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59 /**
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60 * Constructs a Dimension with the width and height of the passed Dimension.
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61 *
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62 * @param d the Dimension supplying the initial values
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63 * @since 2.0
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64 */
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65 public this(Dimension d) {
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66 width = d.width;
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67 height = d.height;
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68 }
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69
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70 /**
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71 * Constructs a Dimension where the width and height are the x and y distances of the
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72 * input point from the origin.
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73 *
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74 * @param pt the Point supplying the initial values
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75 * @since 2.0
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76 */
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77 public this(org.eclipse.swt.graphics.Point.Point pt) {
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78 width = pt.x;
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79 height = pt.y;
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80 }
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81
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82 /**
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83 * Constructs a Dimension with the supplied width and height values.
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84 *
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85 * @param w the width
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86 * @param h the height
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87 * @since 2.0
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88 */
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89 public this(int w, int h) {
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90 width = w;
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91 height = h;
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92 }
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93
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94 /**
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95 * Constructs a Dimension with the width and height of the Image supplied as input.
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96 *
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97 * @param image the image supplying the dimensions
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98 * @since 2.0
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99 */
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100 public this(org.eclipse.swt.graphics.Image.Image image) {
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101 org.eclipse.swt.graphics.Rectangle.Rectangle r = image.getBounds();
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102 width = r.width;
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103 height = r.height;
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104 }
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105
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106 /**
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107 * Returns <code>true</code> if the input Dimension fits into this Dimension. A Dimension
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108 * of the same size is considered to "fit".
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109 *
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110 * @param d the dimension being tested
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111 * @return <code>true</code> if this Dimension contains <i>d</i>
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112 * @since 2.0
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113 */
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114 public bool contains(Dimension d) {
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115 return width >= d.width && height >= d.height;
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116 }
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117
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118 /**
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119 * Returns <code>true</code> if this Dimension properly contains the one specified.
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120 * Proper containment is defined as containment using "<", instead of "<=".
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121 *
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122 * @param d the dimension being tested
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123 * @return <code>true</code> if this Dimension properly contains the one specified
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124 * @since 2.0
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125 */
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126 public bool containsProper(Dimension d) {
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127 return width > d.width && height > d.height;
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128 }
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129
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130 /**
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131 * Copies the width and height values of the input Dimension to this Dimension.
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132 *
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133 * @param d the dimension supplying the values
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134 * @since 2.0
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135 */
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136 public void setSize(Dimension d) {
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137 width = d.width;
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138 height = d.height;
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139 }
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140
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141 /**
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142 * Returns the area of this Dimension.
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143 *
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144 * @return the area
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145 * @since 2.0
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146 */
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147 public int getArea() {
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148 return width * height;
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149 }
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150
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151 /**
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152 * Creates and returns a copy of this Dimension.
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153 * @return a copy of this Dimension
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154 * @since 2.0
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155 */
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156 public Dimension getCopy() {
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157 return new Dimension(this);
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158 }
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159
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160 /**
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161 * Creates and returns a new Dimension representing the difference between this Dimension
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162 * and the one specified.
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163 *
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164 * @param d the dimension being compared
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165 * @return a new dimension representing the difference
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166 * @since 2.0
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167 */
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168 public Dimension getDifference(Dimension d) {
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169 return new Dimension(width - d.width, height - d.height);
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170 }
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171
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172 /**
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173 * Creates and returns a Dimension representing the sum of this Dimension and the one
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174 * specified.
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175 *
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176 * @param d the dimension providing the expansion width and height
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177 * @return a new dimension expanded by <i>d</i>
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178 * @since 2.0
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179 */
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180 public Dimension getExpanded(Dimension d) {
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181 return new Dimension(width + d.width, height + d.height);
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182 }
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183
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184 /**
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185 * Creates and returns a new Dimension representing the sum of this Dimension and the one
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186 * specified.
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187 *
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188 * @param w value by which the width of this is to be expanded
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189 * @param h value by which the height of this is to be expanded
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190 * @return a new Dimension expanded by the given values
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191 * @since 2.0
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192 */
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193 public Dimension getExpanded(int w, int h) {
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194 return new Dimension(width + w, height + h);
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195 }
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196
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197 /**
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198 * Creates and returns a new Dimension representing the intersection of this Dimension and
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199 * the one specified.
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200 *
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201 * @param d the Dimension to intersect with
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202 * @return A new Dimension representing the intersection
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203 * @since 2.0
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204 */
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205 public Dimension getIntersected(Dimension d) {
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206 return (new Dimension(this)).intersect(d);
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207 }
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208
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209 /**
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210 * Creates and returns a new Dimension with negated values.
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211 *
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212 * @return a new Dimension with negated values
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213 * @since 2.0
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214 */
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215 public Dimension getNegated() {
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216 return new Dimension(0 - width, 0 - height);
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217 }
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218
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219 /**
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220 * Returns whether the input Object is equivalent to this Dimension. <code>true</code> if
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221 * the Object is a Dimension and its width and height are equal to this Dimension's width
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222 * and height, <code>false</code> otherwise.
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223 *
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224 * @param o the Object being tested for equality
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225 * @return <code>true</code> if the given object is equal to this dimension
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226 * @since 2.0
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227 */
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228 public override int opEquals(Object o) {
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229 if (auto d = cast(Dimension)o ) {
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230 return (d.width is width && d.height is height);
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231 }
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232 return false;
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233 }
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234
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235 /**
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236 * Returns <code>true</code> if this Dimension's width and height are equal to the given
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237 * width and height.
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238 *
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239 * @param w the width
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240 * @param h the height
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241 * @return <code>true</code> if this dimension's width and height are equal to those given.
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242 * @since 2.0
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243 */
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244 public bool equals(int w, int h) {
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245 return width is w && height is h;
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246 }
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247
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248 /**
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249 * Expands the size of this Dimension by the specified amount.
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250 *
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251 * @param d the Dimension providing the expansion width and height
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252 * @return <code>this</code> for convenience
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253 * @since 2.0
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254 */
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255 public Dimension expand(Dimension d) {
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256 width += d.width;
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257 height += d.height;
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258 return this;
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259 }
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260
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261 /**
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262 * Expands the size of this Dimension by the specified amound.
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263 *
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264 * @param pt the Point supplying the dimensional values
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265 * @return <code>this</code> for convenience
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266 * @since 2.0
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267 */
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268 public Dimension expand(Point pt) {
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269 width += pt.x;
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270 height += pt.y;
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271 return this;
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272 }
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273
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274 /**
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275 * Expands the size of this Dimension by the specified width and height.
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276 *
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277 * @param w Value by which the width should be increased
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278 * @param h Value by which the height should be increased
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279 * @return <code>this</code> for convenience
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280 * @since 2.0
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281 */
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282 public Dimension expand(int w, int h) {
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283 width += w;
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284 height += h;
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285 return this;
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286 }
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287
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288 /**
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289 * Creates a new Dimension with its width and height scaled by the specified value.
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290 *
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291 * @param amount Value by which the width and height are scaled
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292 * @return a new dimension with the scale applied
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293 * @since 2.0
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294 */
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295 public Dimension getScaled(double amount) {
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296 return (new Dimension(this))
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297 .scale(amount);
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298 }
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299
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300 /**
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301 * Creates a new Dimension with its height and width swapped. Useful in orientation change
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302 * calculations.
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303 *
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304 * @return a new Dimension with its height and width swapped
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305 * @since 2.0
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306 */
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307 public Dimension getTransposed() {
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308 return (new Dimension(this))
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309 .transpose();
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310 }
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311
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312 /**
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313 * Creates a new Dimension representing the union of this Dimension with the one
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314 * specified. Union is defined as the max() of the values from each Dimension.
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315 *
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316 * @param d the Dimension to be unioned
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317 * @return a new Dimension
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318 * @since 2.0
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319 */
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320 public Dimension getUnioned(Dimension d) {
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321 return (new Dimension(this)).union_(d);
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322 }
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323
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324 /**
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325 * @see java.lang.Object#toHash()
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326 */
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327 public override hash_t toHash() {
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328 return (width * height) ^ (width + height);
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329 }
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330
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331
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332 /**
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333 * This Dimension is intersected with the one specified. Intersection is performed by
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334 * taking the min() of the values from each dimension.
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335 *
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336 * @param d the Dimension used to perform the min()
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337 * @return <code>this</code> for convenience
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338 * @since 2.0
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339 */
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340 public Dimension intersect(Dimension d) {
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341 width = Math.min(d.width, width);
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342 height = Math.min(d.height, height);
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343 return this;
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344 }
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345
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346 /**
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347 * Returns <code>true</code> if the Dimension has width or height greater than 0.
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348 *
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349 * @return <code>true</code> if this Dimension is empty
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350 * @since 2.0
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351 */
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352 public bool isEmpty() {
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353 return (width <= 0) || (height <= 0);
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354 }
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355
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356 /**
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357 * Negates the width and height of this Dimension.
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358 *
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359 * @return <code>this</code> for convenience
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360 * @since 2.0
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361 */
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362 public Dimension negate() {
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363 width = 0 - width;
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364 height = 0 - height;
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365 return this;
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366 }
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367
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368 /**
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369 * @see org.eclipse.draw2d.geometry.Translatable#performScale(double)
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370 */
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371 public void performScale(double factor) {
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372 scale(factor);
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373 }
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374
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375 /**
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376 * @see org.eclipse.draw2d.geometry.Translatable#performTranslate(int, int)
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377 */
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378 public void performTranslate(int dx, int dy) { }
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379
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380 /**
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381 * Scales the width and height of this Dimension by the amount supplied, and returns this
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382 * for convenience.
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383 *
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384 * @param amount value by which this Dimension's width and height are to be scaled
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385 * @return <code>this</code> for convenience
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386 * @since 2.0
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387 */
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388 public Dimension scale(double amount) {
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389 return scale(amount, amount);
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390 }
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391
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392 /**
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393 * Scales the width of this Dimension by <i>w</i> and scales the height of this Dimension
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394 * by <i>h</i>. Returns this for convenience.
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395 *
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396 * @param w the value by which the width is to be scaled
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diff changeset
397 * @param h the value by which the height is to be scaled
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398 * @return <code>this</code> for convenience
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parents:
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399 * @since 2.0
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400 */
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401 public Dimension scale(double w, double h) {
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402 width = cast(int)(Math.floor(width * w));
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403 height = cast(int)(Math.floor(height * h));
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404 return this;
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405 }
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parents:
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406
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Frank Benoit <benoit@tionex.de>
parents:
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407 /**
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
408 * Reduces the width of this Dimension by <i>w</i>, and reduces the height of this
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parents:
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409 * Dimension by <i>h</i>. Returns this for convenience.
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
410 *
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
411 * @param w the value by which the width is to be reduced
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
412 * @param h the value by which the height is to be reduced
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parents:
diff changeset
413 * @return <code>this</code> for convenience
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parents:
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414 * @since 2.0
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parents:
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415 */
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parents:
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416 public Dimension shrink(int w, int h) {
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417 return expand(-w, -h);
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418 }
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419
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parents:
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420 /**
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Frank Benoit <benoit@tionex.de>
parents:
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421 * @see Object#toString()
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422 */
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423
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424 public override String toString() {
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425 return Format("Dimension({}, {})", width, height);
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426 }
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diff changeset
427
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
428 /**
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
429 * Swaps the width and height of this Dimension, and returns this for convenience. Can be
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parents:
diff changeset
430 * useful in orientation changes.
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
431 *
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
432 * @return <code>this</code> for convenience
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433 * @since 2.0
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434 */
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
435 public Dimension transpose() {
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
436 int temp = width;
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diff changeset
437 width = height;
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438 height = temp;
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
439 return this;
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parents:
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440 }
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parents:
diff changeset
441
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
442 /**
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
443 * Sets the width of this Dimension to the greater of this Dimension's width and
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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parents:
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444 * <i>d</i>.width. Likewise for this Dimension's height.
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
445 *
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Frank Benoit <benoit@tionex.de>
parents:
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446 * @param d the Dimension to union with this Dimension
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
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447 * @return <code>this</code> for convenience
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448 * @since 2.0
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449 */
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450 public Dimension union_ (Dimension d) {
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451 width = Math.max(width, d.width);
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452 height = Math.max(height, d.height);
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453 return this;
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454 }
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455
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456 /**
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457 * Returns <code>double</code> width
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458 *
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459 * @return <code>double</code> width
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460 * @since 3.4
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461 */
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462 public double preciseWidth() {
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463 return width;
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464 }
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465
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466 /**
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467 * Returns <code>double</code> height
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468 *
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469 * @return <code>double</code> height
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470 * @since 3.4
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471 */
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472 public double preciseHeight() {
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473 return height;
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474 }
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475
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476 }