Mercurial > projects > dwt2
annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/custom/StyleRange.d @ 0:6dd524f61e62
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author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 02 Mar 2009 14:44:16 +0100 |
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children | 4c0057e71936 |
rev | line source |
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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.swt.custom.StyleRange; |
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14 |
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15 import java.lang.all; |
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16 |
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17 |
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18 import org.eclipse.swt.SWT; |
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19 import org.eclipse.swt.graphics.Color; |
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20 import org.eclipse.swt.graphics.TextStyle; |
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21 import org.eclipse.swt.internal.CloneableCompatibility; |
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22 import org.eclipse.swt.custom.StyleRange; |
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23 import org.eclipse.swt.custom.TextChangedEvent; |
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24 import org.eclipse.swt.custom.TextChangingEvent; |
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25 |
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26 static import tango.text.Text; |
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27 alias tango.text.Text.Text!(char) StringBuffer; |
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28 |
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29 /** |
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30 * <code>StyleRange</code> defines a set of styles for a specified |
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31 * range of text. |
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32 * <p> |
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33 * The hashCode() method in this class uses the values of the public |
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34 * fields to compute the hash value. When storing instances of the |
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35 * class in hashed collections, do not modify these fields after the |
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36 * object has been inserted. |
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37 * </p> |
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38 * |
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39 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
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40 */ |
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41 public class StyleRange : TextStyle, CloneableCompatibility { |
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42 |
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43 /** |
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44 * the start offset of the range, zero-based from the document start |
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45 */ |
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46 public int start; |
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47 |
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48 /** |
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49 * the length of the range |
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50 */ |
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51 public int length; |
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52 |
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53 /** |
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54 * the font style of the range. It may be a combination of |
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55 * SWT.NORMAL, SWT.ITALIC or SWT.BOLD |
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56 * |
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57 * Note: the font style is not used if the <code>font</code> attribute |
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58 * is set |
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59 */ |
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60 public int fontStyle = SWT.NORMAL; |
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61 |
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62 /** |
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63 * Create a new style range with no styles |
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64 * |
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65 * @since 3.2 |
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66 */ |
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67 public this() { |
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68 } |
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69 /++ |
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70 + SWT extension for clone implementation |
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71 +/ |
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72 protected this( StyleRange other ){ |
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73 super( other ); |
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74 start = other.start; |
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75 length = other.length; |
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76 fontStyle = other.fontStyle; |
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77 } |
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78 |
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79 /** |
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80 * Create a new style range from an existing text style. |
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81 * |
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82 * @param style the text style to copy |
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83 * |
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84 * @since 3.4 |
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85 */ |
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86 public this(TextStyle style) { |
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87 super(style); |
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88 } |
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89 |
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90 /** |
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91 * Create a new style range. |
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92 * |
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93 * @param start start offset of the style |
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94 * @param length length of the style |
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95 * @param foreground foreground color of the style, null if none |
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96 * @param background background color of the style, null if none |
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97 */ |
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98 public this(int start, int length, Color foreground, Color background) { |
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99 super(null, foreground, background); |
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100 this.start = start; |
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101 this.length = length; |
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102 } |
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103 |
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104 /** |
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105 * Create a new style range. |
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106 * |
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107 * @param start start offset of the style |
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108 * @param length length of the style |
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109 * @param foreground foreground color of the style, null if none |
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110 * @param background background color of the style, null if none |
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111 * @param fontStyle font style of the style, may be SWT.NORMAL, SWT.ITALIC or SWT.BOLD |
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112 */ |
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113 public this(int start, int length, Color foreground, Color background, int fontStyle) { |
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114 this(start, length, foreground, background); |
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115 this.fontStyle = fontStyle; |
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116 } |
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117 |
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118 /** |
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119 * Compares the argument to the receiver, and returns true |
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120 * if they represent the <em>same</em> object using a class |
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121 * specific comparison. |
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122 * |
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123 * @param object the object to compare with this object |
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124 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise |
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125 * |
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126 * @see #hashCode() |
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127 */ |
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128 public override int opEquals(Object object) { |
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129 if (object is this) return true; |
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130 if (auto style = cast(StyleRange) object ) { |
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131 if (start !is style.start) return false; |
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132 if (length !is style.length) return false; |
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133 return similarTo(style); |
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134 } |
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135 return false; |
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136 } |
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137 |
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138 /** |
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139 * Returns an integer hash code for the receiver. Any two |
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140 * objects that return <code>true</code> when passed to |
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141 * <code>equals</code> must return the same value for this |
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142 * method. |
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143 * |
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144 * @return the receiver's hash |
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145 * |
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146 * @see #equals(Object) |
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147 */ |
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148 public override hash_t toHash() { |
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149 return super.toHash() ^ fontStyle; |
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150 } |
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151 bool isVariableHeight() { |
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152 return font !is null || metrics !is null || rise !is 0; |
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153 } |
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154 /** |
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155 * Returns whether or not the receiver is unstyled (i.e., does not have any |
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156 * style attributes specified). |
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157 * |
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158 * @return true if the receiver is unstyled, false otherwise. |
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159 */ |
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160 public bool isUnstyled() { |
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161 if (font !is null) return false; |
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162 if (rise !is 0) return false; |
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163 if (metrics !is null) return false; |
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164 if (foreground !is null) return false; |
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165 if (background !is null) return false; |
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166 if (fontStyle !is SWT.NORMAL) return false; |
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167 if (underline) return false; |
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168 if (strikeout) return false; |
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169 if (borderStyle !is SWT.NONE) return false; |
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170 return true; |
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171 } |
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172 |
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173 /** |
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174 * Compares the specified object to this StyleRange and answer if the two |
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175 * are similar. The object must be an instance of StyleRange and have the |
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176 * same field values for except for start and length. |
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177 * |
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178 * @param style the object to compare with this object |
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179 * @return true if the objects are similar, false otherwise |
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180 */ |
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181 public bool similarTo(StyleRange style) { |
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182 if (!super.opEquals(style)) return false; |
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183 if (fontStyle !is style.fontStyle) return false; |
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184 return true; |
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185 } |
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186 |
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187 /** |
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188 * Returns a new StyleRange with the same values as this StyleRange. |
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189 * |
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190 * @return a shallow copy of this StyleRange |
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191 */ |
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192 public /+override+/ Object clone() { |
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193 return new StyleRange( this ); |
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194 } |
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195 |
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196 /** |
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197 * Returns a string containing a concise, human-readable |
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198 * description of the receiver. |
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199 * |
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200 * @return a string representation of the StyleRange |
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201 */ |
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202 public override String toString() { |
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203 StringBuffer buffer = new StringBuffer(); |
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204 buffer.append("StyleRange {"); |
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205 buffer.append(start); |
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206 buffer.append(", "); |
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207 buffer.append(length); |
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208 buffer.append(", fontStyle="); |
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209 switch (fontStyle) { |
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210 case SWT.BOLD: |
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211 buffer.append("bold"); |
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212 break; |
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213 case SWT.ITALIC: |
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214 buffer.append("italic"); |
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215 break; |
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216 case SWT.BOLD | SWT.ITALIC: |
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217 buffer.append("bold-italic"); |
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218 break; |
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219 default: |
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220 buffer.append("normal"); |
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221 } |
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222 String str = super.toString(); |
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223 int index = tango.text.Util.locate( str, '{'); |
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224 if( index is str.length ) index = -1; |
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225 str = str[ index + 1 .. $ ]; |
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226 if (str.length > 1) buffer.append(", "); |
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227 buffer.append(str); |
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228 return buffer.toString(); |
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229 } |
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230 } |