| package org.eclipse.swt.graphics;
|
|
|
| /*
|
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html
|
| */
|
|
|
| import org.eclipse.swt.*;
|
|
|
| /**
|
| * Instances of this class describe operating system fonts.
|
| * Only the public API of this type is platform independent.
|
| * <p>
|
| * For platform-independent behaviour, use the get and set methods
|
| * corresponding to the following properties:
|
| * <dl>
|
| * <dt>height</dt><dd>the height of the font in points</dd>
|
| * <dt>name</dt><dd>the face name of the font, which may include the foundry</dd>
|
| * <dt>style</dt><dd>A bitwise combination of NORMAL, ITALIC and BOLD</dd>
|
| * </dl>
|
| * If extra, platform-dependent functionality is required:
|
| * <ul>
|
| * <li>On <em>Windows</em>, the data member of the <code>FontData</code>
|
| * corresponds to a Windows <code>LOGFONT</code> structure whose fields
|
| * may be retrieved and modified.</li>
|
| * <li>On <em>X</em>, the fields of the <code>FontData</code> correspond
|
| * to the entries in the font's XLFD name and may be retrieved and modified.
|
| * </ul>
|
| * Application code does <em>not</em> need to explicitly release the
|
| * resources managed by each instance when those instances are no longer
|
| * required, and thus no <code>dispose()</code> method is provided.
|
| *
|
| * @see Font
|
| */ |
| public final class FontData {
|
| /**
|
| * the font name
|
| * (Warning: This field is platform dependent)
|
| */ |
| public String name;
|
|
|
| /**
|
| * The height of the font data in points
|
| * (Warning: This field is platform dependent)
|
| */ |
| public int height;
|
|
|
| /**
|
| * the font style
|
| * (Warning: This field is platform dependent)
|
| */ |
| public int style;
|
|
|
| /**
|
| * the Pango string
|
| * (Warning: This field is platform dependent)
|
| */ |
| public byte[] string;
|
|
|
| /**
|
| * The locales of the font
|
| * (Warning: These fields are platform dependent)
|
| */ |
| String lang, country, variant;
|
|
|
| /** |
| * Constructs a new un-initialized font data. |
| */ |
| public FontData () {
|
| this("", 12, SWT.NORMAL);
|
| }
|
|
|
| /** |
| * Constructs a new FontData given a string representation |
| * in the form generated by the <code>FontData.toString</code> |
| * method. |
| * <p> |
| * Note that the representation varies between platforms, |
| * and a FontData can only be created from a string that was |
| * generated on the same platform. |
| * </p> |
| * |
| * @param string the string representation of a <code>FontData</code> (must not be null) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the argument does not represent a valid description</li> |
| * </ul> |
| * |
| * @see #toString |
| */ |
| public FontData(String string) {
|
| if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
|
| int start = 0;
|
| int end = string.indexOf('|');
|
| if (end == -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| String version1 = string.substring(start, end);
|
|
|
| start = end + 1;
|
| end = string.indexOf('|', start);
|
| if (end == -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| String name = string.substring(start, end);
|
|
|
| start = end + 1;
|
| end = string.indexOf('|', start);
|
| if (end == -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| int height = 0;
|
| try {
|
| height = Integer.parseInt(string.substring(start, end));
|
| } catch (NumberFormatException e) {
|
| SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| }
|
|
|
| start = end + 1;
|
| end = string.indexOf('|', start);
|
| if (end == -1) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| int style = 0;
|
| try {
|
| style = Integer.parseInt(string.substring(start, end));
|
| } catch (NumberFormatException e) {
|
| SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| }
|
|
|
| start = end + 1;
|
| end = string.indexOf('|', start);
|
| setName(name);
|
| setHeight(height);
|
| setStyle(style);
|
| if (end == -1) return;
|
| String platform = string.substring(start, end);
|
|
|
| start = end + 1;
|
| end = string.indexOf('|', start);
|
| if (end == -1) return;
|
| String version2 = string.substring(start, end);
|
|
|
| if (platform.equals("GTK") && version2.equals("1")) {
|
| return;
|
| }
|
| }
|
|
|
| /** |
| * Constructs a new font data given a font name, |
| * the height of the desired font in points, |
| * and a font style. |
| * |
| * @param name the name of the font (must not be null) |
| * @param height the font height in points |
| * @param style a bit or combination of NORMAL, BOLD, ITALIC |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - when the font name is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> |
| * </ul> |
| */ |
| public FontData(String name, int height, int style) {
|
| setName(name);
|
| setHeight(height);
|
| setStyle(style);
|
| }
|
|
|
| /**
|
| * Compares the argument to the receiver, and returns true
|
| * if they represent the <em>same</em> object using a class
|
| * specific comparison.
|
| *
|
| * @param object the object to compare with this object
|
| * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
|
| *
|
| * @see #hashCode
|
| */ |
| public boolean equals (Object object) {
|
| if (object == this) return true;
|
| if (!(object instanceof FontData)) return false;
|
| FontData data = (FontData)object;
|
| return name.equals(data.name) && height == data.height && style == data.style;
|
| }
|
|
|
| /**
|
| * Returns the height of the receiver in points.
|
| *
|
| * @return the height of this FontData
|
| *
|
| * @see #setHeight
|
| */ |
| public int getHeight() {
|
| return height;
|
| }
|
|
|
| /**
|
| * Returns the name of the receiver.
|
| * On platforms that support font foundries, the return value will
|
| * be the foundry followed by a dash ("-") followed by the face name.
|
| *
|
| * @return the name of this <code>FontData</code>
|
| *
|
| * @see #setName
|
| */ |
| public String getName() {
|
| return name;
|
| }
|
|
|
| /**
|
| * Returns the style of the receiver which is a bitwise OR of
|
| * one or more of the <code>SWT</code> constants NORMAL, BOLD
|
| * and ITALIC.
|
| *
|
| * @return the style of this <code>FontData</code>
|
| *
|
| * @see #setStyle
|
| */ |
| public int getStyle() {
|
| return style;
|
| }
|
|
|
| /** |
| * Returns an integer hash code for the receiver. Any two |
| * objects which return <code>true</code> when passed to |
| * <code>equals</code> must return the same value for this |
| * method. |
| * |
| * @return the receiver's hash |
| * |
| * @see #equals |
| */ |
| public int hashCode () {
|
| return name.hashCode() ^ height ^ style;
|
| }
|
|
|
| /** |
| * Sets the height of the receiver. The parameter is |
| * specified in terms of points, where a point is one |
| * seventy-second of an inch. |
| * |
| * @param height the height of the <code>FontData</code> |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> |
| * </ul> |
| * |
| * @see #getHeight |
| */ |
| public void setHeight(int height) {
|
| if (height < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
|
| this.height = height;
|
| this.string = null;
|
| }
|
|
|
| /**
|
| * Sets the locale of the receiver.
|
| * <p>
|
| * The locale determines which platform character set this
|
| * font is going to use. Widgets and graphics operations that
|
| * use this font will convert UNICODE strings to the platform
|
| * character set of the specified locale.
|
| * </p>
|
| * <p>
|
| * On platforms which there are multiple character sets for a
|
| * given language/country locale, the variant portion of the
|
| * locale will determine the character set.
|
| * </p>
|
| *
|
| * @param locale the <code>String</code> representing a Locale object
|
| * @see java.util.Locale#toString
|
| */ |
| public void setLocale(String locale) {
|
| lang = country = variant = null;
|
| if (locale != null) {
|
| char sep = '_';
|
| int length = locale.length();
|
| int firstSep, secondSep;
|
|
|
| firstSep = locale.indexOf(sep);
|
| if (firstSep == -1) {
|
| firstSep = secondSep = length;
|
| } else {
|
| secondSep = locale.indexOf(sep, firstSep + 1);
|
| if (secondSep == -1) secondSep = length;
|
| }
|
| if (firstSep > 0) lang = locale.substring(0, firstSep);
|
| if (secondSep > firstSep + 1) country = locale.substring(firstSep + 1, secondSep);
|
| if (length > secondSep + 1) variant = locale.substring(secondSep + 1);
|
| }
|
| }
|
|
|
| /** |
| * Sets the name of the receiver. |
| * <p> |
| * Some platforms support font foundries. On these platforms, the name |
| * of the font specified in setName() may have one of the following forms: |
| * <ol> |
| * <li>a face name (for example, "courier")</li> |
| * <li>a foundry followed by a dash ("-") followed by a face name (for example, "adobe-courier")</li> |
| * </ol> |
| * In either case, the name returned from getName() will include the |
| * foundry. |
| * </p> |
| * <p> |
| * On platforms that do not support font foundries, only the face name |
| * (for example, "courier") is used in <code>setName()</code> and |
| * <code>getName()</code>. |
| * </p> |
| * |
| * @param name the name of the font data (must not be null) |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - when the font name is null</li> |
| * </ul> |
| * |
| * @see #getName |
| */ |
| public void setName(String name) {
|
| if (name == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
|
| this.name = name;
|
| this.string = null;
|
| }
|
|
|
| /** |
| * Sets the style of the receiver to the argument which must |
| * be a bitwise OR of one or more of the <code>SWT</code> |
| * constants NORMAL, BOLD and ITALIC. |
| * |
| * @param style the new style for this <code>FontData</code> |
| * |
| * @see #getStyle |
| */ |
| public void setStyle(int style) {
|
| this.style = style;
|
| this.string = null;
|
| }
|
|
|
| /** |
| * Returns a string representation of the receiver which is suitable |
| * for constructing an equivalent instance using the |
| * <code>FontData(String)</code> constructor. |
| * |
| * @return a string representation of the FontData |
| * |
| * @see FontData |
| */ |
| public String toString() {
|
| StringBuffer buffer = new StringBuffer();
|
| buffer.append("1|");
|
| buffer.append(getName());
|
| buffer.append("|");
|
| buffer.append(getHeight());
|
| buffer.append("|");
|
| buffer.append(getStyle());
|
| buffer.append("|");
|
| buffer.append("GTK|1|");
|
| return buffer.toString();
|
| }
|
|
|
| }
|