Mercurial > projects > dwt-linux
annotate dwt/graphics/FontMetrics.d @ 259:c0d810de7093
Update SWT 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 29 Jun 2008 14:33:38 +0200 |
| parents | b6bee07cfc0b |
| children |
| rev | line source |
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| 72 | 1 /******************************************************************************* |
| 259 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 4 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 72 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 4 | 12 *******************************************************************************/ |
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13 module dwt.graphics.FontMetrics; |
| 4 | 14 |
| 15 | |
| 16 /** | |
| 17 * Instances of this class provide measurement information | |
| 18 * about fonts including ascent, descent, height, leading | |
| 19 * space between rows, and average character width. | |
| 20 * <code>FontMetrics</code> are obtained from <code>GC</code>s | |
| 21 * using the <code>getFontMetrics()</code> method. | |
| 22 * | |
| 23 * @see GC#getFontMetrics | |
| 259 | 24 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| 4 | 25 */ |
| 26 public final class FontMetrics { | |
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27 int ascent, descent, averageCharWidth, leading, height; |
| 4 | 28 |
| 29 package this() { | |
| 30 } | |
| 31 | |
| 32 /** | |
| 33 * Compares the argument to the receiver, and returns true | |
| 34 * if they represent the <em>same</em> object using a class | |
| 35 * specific comparison. | |
| 36 * | |
| 37 * @param object the object to compare with this object | |
| 38 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise | |
| 39 * | |
| 40 * @see #hashCode | |
| 41 */ | |
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42 public override int opEquals (Object object) { |
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43 if (object is this) return true; |
| 4 | 44 if( auto metrics = cast(FontMetrics)object ){ |
| 194 | 45 return ascent is metrics.ascent && descent is metrics.descent && |
| 46 averageCharWidth is metrics.averageCharWidth && leading is metrics.leading && | |
| 47 height is metrics.height; | |
| 4 | 48 } |
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49 return false; |
| 4 | 50 } |
| 51 | |
| 52 /** | |
| 53 * Returns the ascent of the font described by the receiver. A | |
| 54 * font's <em>ascent</em> is the distance from the baseline to the | |
| 55 * top of actual characters, not including any of the leading area, | |
| 56 * measured in pixels. | |
| 57 * | |
| 58 * @return the ascent of the font | |
| 59 */ | |
| 60 public int getAscent() { | |
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61 return ascent; |
| 4 | 62 } |
| 63 | |
| 64 /** | |
| 65 * Returns the average character width, measured in pixels, | |
| 66 * of the font described by the receiver. | |
| 67 * | |
| 68 * @return the average character width of the font | |
| 69 */ | |
| 70 public int getAverageCharWidth() { | |
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71 return averageCharWidth; |
| 4 | 72 } |
| 73 | |
| 74 /** | |
| 75 * Returns the descent of the font described by the receiver. A | |
| 76 * font's <em>descent</em> is the distance from the baseline to the | |
| 77 * bottom of actual characters, not including any of the leading area, | |
| 78 * measured in pixels. | |
| 79 * | |
| 80 * @return the descent of the font | |
| 81 */ | |
| 82 public int getDescent() { | |
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83 return descent; |
| 4 | 84 } |
| 85 | |
| 86 /** | |
| 87 * Returns the height of the font described by the receiver, | |
| 88 * measured in pixels. A font's <em>height</em> is the sum of | |
| 89 * its ascent, descent and leading area. | |
| 90 * | |
| 91 * @return the height of the font | |
| 92 * | |
| 93 * @see #getAscent | |
| 94 * @see #getDescent | |
| 95 * @see #getLeading | |
| 96 */ | |
| 97 public int getHeight() { | |
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98 return height; |
| 4 | 99 } |
| 100 | |
| 101 /** | |
| 102 * Returns the leading area of the font described by the | |
| 103 * receiver. A font's <em>leading area</em> is the space | |
| 104 * above its ascent which may include accents or other marks. | |
| 105 * | |
| 106 * @return the leading space of the font | |
| 107 */ | |
| 108 public int getLeading() { | |
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109 return leading; |
| 4 | 110 } |
| 111 | |
| 112 public static FontMetrics gtk_new(int ascent, int descent, int averageCharWidth, int leading, int height) { | |
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113 FontMetrics fontMetrics = new FontMetrics(); |
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114 fontMetrics.ascent = ascent; |
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parents:
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115 fontMetrics.descent = descent; |
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8cec8f536af3
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parents:
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116 fontMetrics.averageCharWidth = averageCharWidth; |
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parents:
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117 fontMetrics.leading = leading; |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
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parents:
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118 fontMetrics.height = height; |
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Frank Benoit <benoit@tionex.de>
parents:
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119 return fontMetrics; |
| 4 | 120 } |
| 121 | |
| 122 /** | |
| 123 * Returns an integer hash code for the receiver. Any two | |
| 124 * objects that return <code>true</code> when passed to | |
| 125 * <code>equals</code> must return the same value for this | |
| 126 * method. | |
| 127 * | |
| 128 * @return the receiver's hash | |
| 129 * | |
| 130 * @see #equals | |
| 131 */ | |
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132 public override hash_t toHash() { |
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133 return ascent ^ descent ^ averageCharWidth ^ leading ^ height; |
| 4 | 134 } |
| 135 | |
| 136 } |