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annotate dwt/graphics/FontMetrics.d @ 7:e831403a80a9

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Add 'cast' to casts
author Frank Benoit <benoit@tionex.de>
date Wed, 27 Aug 2008 14:30:35 +0200
parents 1a8b3cb347e0
children a9ab4c738ed8
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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 *******************************************************************************/
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11 module dwt.graphics.FontMetrics;
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12
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13 import dwt.dwthelper.utils;
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15
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16 /**
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17 * Instances of this class provide measurement information
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18 * about fonts including ascent, descent, height, leading
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19 * space between rows, and average character width.
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20 * <code>FontMetrics</code> are obtained from <code>GC</code>s
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21 * using the <code>getFontMetrics()</code> method.
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22 *
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23 * @see GC#getFontMetrics
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24 */
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25 public final class FontMetrics {
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26 int ascent, descent, averageCharWidth, leading, height;
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28 this() {
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29 }
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31 public static FontMetrics cocoa_new(int ascent, int descent, int averageCharWidth, int leading, int height) {
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32 FontMetrics fontMetrics = new FontMetrics();
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33 fontMetrics.ascent = ascent;
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34 fontMetrics.descent = descent;
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35 fontMetrics.averageCharWidth = averageCharWidth;
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36 fontMetrics.leading = leading;
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37 fontMetrics.height = height;
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38 return fontMetrics;
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39 }
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40
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41 /**
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42 * Compares the argument to the receiver, and returns true
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43 * if they represent the <em>same</em> object using a class
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44 * specific comparison.
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45 *
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46 * @param object the object to compare with this object
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47 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
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48 *
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49 * @see #hashCode
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50 */
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51 public bool equals (Object object) {
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52 if (object is this) return true;
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53 if (!(object instanceof FontMetrics)) return false;
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54 FontMetrics metrics = cast(FontMetrics)object;
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55 return ascent is metrics.ascent && descent is metrics.descent &&
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56 averageCharWidth is metrics.averageCharWidth && leading is metrics.leading &&
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57 height is metrics.height;
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58 }
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59
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60 /**
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61 * Returns the ascent of the font described by the receiver. A
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62 * font's <em>ascent</em> is the distance from the baseline to the
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63 * top of actual characters, not including any of the leading area,
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64 * measured in pixels.
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65 *
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66 * @return the ascent of the font
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67 */
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68 public int getAscent() {
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69 return ascent;
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70 }
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71
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72 /**
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73 * Returns the average character width, measured in pixels,
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74 * of the font described by the receiver.
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75 *
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76 * @return the average character width of the font
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77 */
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78 public int getAverageCharWidth() {
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79 return averageCharWidth;
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80 }
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81
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82 /**
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83 * Returns the descent of the font described by the receiver. A
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84 * font's <em>descent</em> is the distance from the baseline to the
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85 * bottom of actual characters, not including any of the leading area,
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86 * measured in pixels.
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87 *
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88 * @return the descent of the font
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89 */
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90 public int getDescent() {
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91 return descent;
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92 }
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93
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94 /**
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95 * Returns the height of the font described by the receiver,
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96 * measured in pixels. A font's <em>height</em> is the sum of
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97 * its ascent, descent and leading area.
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98 *
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99 * @return the height of the font
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100 *
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101 * @see #getAscent
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102 * @see #getDescent
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103 * @see #getLeading
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104 */
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105 public int getHeight() {
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106 return height;
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107 }
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108
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109 /**
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110 * Returns the leading area of the font described by the
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111 * receiver. A font's <em>leading area</em> is the space
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112 * above its ascent which may include accents or other marks.
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113 *
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114 * @return the leading space of the font
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115 */
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116 public int getLeading() {
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117 return leading;
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118 }
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119
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120 /**
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121 * Returns an integer hash code for the receiver. Any two
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122 * objects that return <code>true</code> when passed to
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123 * <code>equals</code> must return the same value for this
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124 * method.
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125 *
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126 * @return the receiver's hash
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127 *
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128 * @see #equals
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129 */
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130 public int hashCode() {
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131 return ascent ^ descent ^ averageCharWidth ^ leading ^ height;
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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132 }
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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133
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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134 }