Mercurial > projects > dwt-mac
annotate dwt/graphics/TextStyle.d @ 45:d8635bb48c7c
Merge with SWT 3.5
author | Jacob Carlborg <doob@me.com> |
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date | Mon, 01 Dec 2008 17:07:00 +0100 |
parents | 642f460a0908 |
children | 535243e6d16a |
rev | line source |
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45 | 1 /******************************************************************************* |
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 * |
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11 * Port to the D programming language: |
45 | 12 * Jacob Carlborg <doob@me.com> |
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13 *******************************************************************************/ |
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14 module dwt.graphics.TextStyle; |
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15 |
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16 import dwt.DWT; |
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17 |
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18 import dwt.dwthelper.utils; |
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19 import dwt.graphics.Color; |
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20 import dwt.graphics.Font; |
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21 import dwt.graphics.GlyphMetrics; |
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22 |
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23 /** |
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24 * <code>TextStyle</code> defines a set of styles that can be applied |
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25 * to a range of text. |
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26 * <p> |
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27 * The hashCode() method in this class uses the values of the public |
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28 * fields to compute the hash value. When storing instances of the |
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29 * class in hashed collections, do not modify these fields after the |
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30 * object has been inserted. |
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31 * </p> |
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32 * <p> |
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33 * Application code does <em>not</em> need to explicitly release the |
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34 * resources managed by each instance when those instances are no longer |
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35 * required, and thus no <code>dispose()</code> method is provided. |
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36 * </p> |
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37 * |
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38 * @see TextLayout |
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39 * @see Font |
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40 * @see Color |
45 | 41 * @see <a href="http://www.eclipse.org/swt/snippets/#textlayout">TextLayout, TextStyle snippets</a> |
42 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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43 * |
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44 * @since 3.0 |
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45 */ |
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46 public class TextStyle { |
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47 |
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48 /** |
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49 * the font of the style |
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50 */ |
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51 public Font font; |
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52 |
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53 /** |
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54 * the foreground of the style |
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55 */ |
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56 public Color foreground; |
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57 |
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58 /** |
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59 * the background of the style |
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60 */ |
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61 public Color background; |
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62 |
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63 /** |
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64 * the underline flag of the style. The default underline |
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65 * style is <code>DWT.UNDERLINE_SINGLE</code>. |
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66 * |
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67 * |
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68 * @since 3.1 |
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69 */ |
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70 public bool underline; |
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71 |
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72 /** |
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73 * the underline color of the style |
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74 * |
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75 * @since 3.4 |
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76 */ |
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77 public Color underlineColor; |
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78 |
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79 /** |
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80 * the underline style. This style is ignored when |
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81 * <code>underline</code> is false. |
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82 * <p> |
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83 * This value should be one of <code>DWT.UNDERLINE_SINGLE</code>, |
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84 * <code>DWT.UNDERLINE_DOUBLE</code>, <code>DWT.UNDERLINE_ERROR</code>, |
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85 * or <code>DWT.UNDERLINE_SQUIGGLE</code>. |
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86 * </p> |
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87 * |
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88 * @see DWT#UNDERLINE_SINGLE |
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89 * @see DWT#UNDERLINE_DOUBLE |
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90 * @see DWT#UNDERLINE_ERROR |
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91 * @see DWT#UNDERLINE_SQUIGGLE |
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92 * |
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93 * @since 3.4 |
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94 */ |
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95 public int underlineStyle; |
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96 |
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97 /** |
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98 * the strikeout flag of the style |
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99 * |
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100 * @since 3.1 |
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101 */ |
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102 public bool strikeout; |
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103 |
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104 /** |
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105 * the strikeout color of the style |
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106 * |
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107 * @since 3.4 |
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108 */ |
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109 public Color strikeoutColor; |
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110 |
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111 /** |
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112 * the border style. The default border style is <code>DWT.NONE</code>. |
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113 * <p> |
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114 * This value should be one of <code>DWT.BORDER_SOLID</code>, |
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115 * <code>DWT.BORDER_DASH</code>,<code>DWT.BORDER_DOT</code> or |
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116 * <code>DWT.NONE</code>. |
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117 * </p> |
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118 * |
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119 * @see DWT#BORDER_SOLID |
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120 * @see DWT#BORDER_DASH |
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121 * @see DWT#BORDER_DOT |
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122 * @see DWT#NONE |
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123 * |
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124 * @since 3.4 |
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125 */ |
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126 public int borderStyle; |
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127 |
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128 /** |
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129 * the border color of the style |
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130 * |
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131 * @since 3.4 |
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132 */ |
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133 public Color borderColor; |
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134 |
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135 /** |
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136 * the GlyphMetrics of the style |
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137 * |
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138 * @since 3.2 |
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139 */ |
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140 public GlyphMetrics metrics; |
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141 |
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142 /** |
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143 * the baseline rise of the style. |
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144 * |
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145 * @since 3.2 |
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146 */ |
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147 public int rise; |
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148 |
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149 /** |
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150 * Create an empty text style. |
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151 * |
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152 * @since 3.4 |
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153 */ |
5 | 154 public this () { |
0
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155 } |
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156 |
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157 /** |
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158 * Create a new text style with the specified font, foreground |
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159 * and background. |
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160 * |
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161 * @param font the font of the style, <code>null</code> if none |
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162 * @param foreground the foreground color of the style, <code>null</code> if none |
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163 * @param background the background color of the style, <code>null</code> if none |
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164 */ |
5 | 165 public this (Font font, Color foreground, Color background) { |
0
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166 if (font !is null && font.isDisposed()) DWT.error (DWT.ERROR_INVALID_ARGUMENT); |
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167 if (foreground !is null && foreground.isDisposed()) DWT.error (DWT.ERROR_INVALID_ARGUMENT); |
45 | 168 if (background !is null && background.isDisposed()) DWT.error (DWT.ERROR_INVALID_ARGUMENT); |
0
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169 this.font = font; |
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170 this.foreground = foreground; |
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171 this.background = background; |
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172 } |
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173 |
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174 |
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175 /** |
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176 * Create a new text style from an existing text style. |
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177 * |
45 | 178 * @param style the style to copy |
0
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179 * |
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180 * @since 3.4 |
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181 */ |
5 | 182 public this (TextStyle style) { |
0
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183 if (style is null) DWT.error (DWT.ERROR_INVALID_ARGUMENT); |
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184 font = style.font; |
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185 foreground = style.foreground; |
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186 background = style.background; |
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187 underline = style.underline; |
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188 underlineColor = style.underlineColor; |
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189 underlineStyle = style.underlineStyle; |
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190 strikeout = style.strikeout; |
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191 strikeoutColor = style.strikeoutColor; |
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192 borderStyle = style.borderStyle; |
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193 borderColor = style.borderColor; |
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194 metrics = style.metrics; |
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195 rise = style.rise; |
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196 } |
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197 |
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198 /** |
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199 * Compares the argument to the receiver, and returns true |
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200 * if they represent the <em>same</em> object using a class |
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201 * specific comparison. |
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202 * |
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203 * @param object the object to compare with this object |
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204 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise |
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205 * |
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206 * @see #hashCode() |
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207 */ |
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208 public int opEquals(Object object) { |
0
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209 if (object is this) return true; |
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210 if (object is null) return false; |
8 | 211 if (!( null !is cast(TextStyle)object )) return false; |
7 | 212 TextStyle style = cast(TextStyle)object; |
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213 if (foreground !is null) { |
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214 if (!foreground.equals(style.foreground)) return false; |
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215 } else if (style.foreground !is null) return false; |
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216 if (background !is null) { |
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217 if (!background.equals(style.background)) return false; |
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218 } else if (style.background !is null) return false; |
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219 if (font !is null) { |
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220 if (!font.equals(style.font)) return false; |
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221 } else if (style.font !is null) return false; |
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222 if (metrics !is null || style.metrics !is null) return false; |
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223 if (underline !is style.underline) return false; |
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224 if (underlineStyle !is style.underlineStyle) return false; |
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225 if (borderStyle !is style.borderStyle) return false; |
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226 if (strikeout !is style.strikeout) return false; |
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227 if (rise !is style.rise) return false; |
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228 if (underlineColor !is null) { |
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229 if (!underlineColor.equals(style.underlineColor)) return false; |
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230 } else if (style.underlineColor !is null) return false; |
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231 if (strikeoutColor !is null) { |
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232 if (!strikeoutColor.equals(style.strikeoutColor)) return false; |
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233 } else if (style.strikeoutColor !is null) return false; |
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234 if (underlineStyle !is style.underlineStyle) return false; |
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235 if (borderColor !is null) { |
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236 if (!borderColor.equals(style.borderColor)) return false; |
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237 } else if (style.borderColor !is null) return false; |
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238 return true; |
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239 } |
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240 |
33
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241 alias opEquals equals; |
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242 |
0
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243 /** |
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244 * Returns an integer hash code for the receiver. Any two |
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245 * objects that return <code>true</code> when passed to |
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246 * <code>equals</code> must return the same value for this |
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247 * method. |
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248 * |
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249 * @return the receiver's hash |
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250 * |
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251 * @see #equals(Object) |
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252 */ |
33
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253 public hash_t toHash() { |
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254 hash_t hash = 0; |
0
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255 if (foreground !is null) hash ^= foreground.hashCode(); |
45 | 256 if (background !is null) hash ^= background.hashCode(); |
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257 if (font !is null) hash ^= font.hashCode(); |
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258 if (metrics !is null) hash ^= metrics.hashCode(); |
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259 if (underline) hash ^= hash; |
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260 if (strikeout) hash ^= hash; |
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261 hash ^= rise; |
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262 if (underlineColor !is null) hash ^= underlineColor.hashCode(); |
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263 if (strikeoutColor !is null) hash ^= strikeoutColor.hashCode(); |
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264 if (borderColor !is null) hash ^= borderColor.hashCode(); |
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265 hash ^= underlineStyle; |
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266 return hash; |
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267 } |
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268 |
33
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269 alias toHash hashCode; |
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270 |
0
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271 bool isAdherentBorder(TextStyle style) { |
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272 if (this is style) return true; |
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273 if (style is null) return false; |
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274 if (borderStyle !is style.borderStyle) return false; |
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275 if (borderColor !is null) { |
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276 if (!borderColor.equals(style.borderColor)) return false; |
45 | 277 } else { |
278 if (style.borderColor !is null) return false; | |
279 if (foreground !is null) { | |
280 if (!foreground.equals(style.foreground)) return false; | |
281 } else if (style.foreground !is null) return false; | |
282 } | |
0
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283 return true; |
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284 } |
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285 |
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286 bool isAdherentUnderline(TextStyle style) { |
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287 if (this is style) return true; |
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288 if (style is null) return false; |
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289 if (underline !is style.underline) return false; |
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290 if (underlineStyle !is style.underlineStyle) return false; |
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291 if (underlineColor !is null) { |
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292 if (!underlineColor.equals(style.underlineColor)) return false; |
45 | 293 } else { |
294 if (style.underlineColor !is null) return false; | |
295 if (foreground !is null) { | |
296 if (!foreground.equals(style.foreground)) return false; | |
297 } else if (style.foreground !is null) return false; | |
298 } | |
0
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299 return true; |
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300 } |
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301 |
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302 bool isAdherentStrikeout(TextStyle style) { |
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303 if (this is style) return true; |
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304 if (style is null) return false; |
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305 if (strikeout !is style.strikeout) return false; |
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306 if (strikeoutColor !is null) { |
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307 if (!strikeoutColor.equals(style.strikeoutColor)) return false; |
45 | 308 } else { |
309 if (style.strikeoutColor !is null) return false; | |
310 if (foreground !is null) { | |
311 if (!foreground.equals(style.foreground)) return false; | |
312 } else if (style.foreground !is null) return false; | |
313 } | |
0
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314 return true; |
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315 } |
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316 |
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317 /** |
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318 * Returns a string containing a concise, human-readable |
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319 * description of the receiver. |
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320 * |
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321 * @return a string representation of the <code>TextStyle</code> |
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322 */ |
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323 public String toString () { |
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324 StringBuffer buffer = new StringBuffer("TextStyle {"); |
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325 int startLength = buffer.length(); |
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326 if (font !is null) { |
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327 if (buffer.length() > startLength) buffer.append(", "); |
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328 buffer.append("font="); |
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329 buffer.append(font.toString); |
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330 } |
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331 if (foreground !is null) { |
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332 if (buffer.length() > startLength) buffer.append(", "); |
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333 buffer.append("foreground="); |
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334 buffer.append(foreground.toString); |
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335 } |
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336 if (background !is null) { |
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337 if (buffer.length() > startLength) buffer.append(", "); |
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338 buffer.append("background="); |
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339 buffer.append(background.toString); |
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340 } |
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341 if (underline) { |
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342 if (buffer.length() > startLength) buffer.append(", "); |
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343 buffer.append("underlined"); |
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344 } |
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345 if (strikeout) { |
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346 if (buffer.length() > startLength) buffer.append(", "); |
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347 buffer.append("striked out"); |
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348 } |
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349 if (rise !is 0) { |
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350 if (buffer.length() > startLength) buffer.append(", "); |
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351 buffer.append("rise="); |
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352 buffer.append(rise); |
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353 } |
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354 if (metrics !is null) { |
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355 if (buffer.length() > startLength) buffer.append(", "); |
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356 buffer.append("metrics="); |
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357 buffer.append(metrics.toString); |
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358 } |
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359 buffer.append("}"); |
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360 return buffer.toString(); |
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361 } |
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362 |
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363 } |