Mercurial > projects > dwt-win
view dwt/graphics/FontData.d @ 194:3afcd4ddcf90
Update to SWT 3.3.2
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Wed, 19 Mar 2008 21:48:31 +0100 |
parents | 0a96e5a30470 |
children | 184ab53b7785 |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2000, 2007 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.graphics.FontData; import dwt.DWT; import dwt.internal.win32.OS; import dwt.dwthelper.utils; import dwt.dwthelper.Float; import dwt.dwthelper.Integer; static import tango.text.Text; import tango.util.Convert; alias tango.text.Text.Text!(char) StringBuffer; /** * Instances of this class describe operating system fonts. * <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 { /** * A Win32 LOGFONT struct * (Warning: This field is platform dependent) * <p> * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT * public API. It is marked public only so that it can be shared * within the packages provided by DWT. It is not available on all * platforms and should never be accessed from application code. * </p> */ public LOGFONT data; /** * The height of the font data in points * (Warning: This field is platform dependent) * <p> * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT * public API. It is marked public only so that it can be shared * within the packages provided by DWT. It is not available on all * platforms and should never be accessed from application code. * </p> */ public float height; /** * The locales of the font */ char[] lang, country, variant; private static FontData s_this; /** * Constructs a new uninitialized font data. */ public this() { // We set the charset field so that // wildcard searching will work properly // out of the box data.lfCharSet = cast(byte)OS.DEFAULT_CHARSET; height = 12; } /** * Constructs a new font data given the Windows <code>LOGFONT</code> * that it should represent. * * @param data the <code>LOGFONT</code> for the result */ this(LOGFONT* data, float height) { this.data = *data; this.height = height; } /** * 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 this(char[] string) { if (string is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); int start = 0; int end = string.indexOf('|'); if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); char[] version1 = string.substring(start, end); try { if (Integer.parseInt(version1) !is 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); } catch (NumberFormatException e) { DWT.error(DWT.ERROR_INVALID_ARGUMENT); } start = end + 1; end = string.indexOf('|', start); if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); char[] name = string.substring(start, end); start = end + 1; end = string.indexOf('|', start); if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); float height = 0; try { height = Float.parseFloat(string.substring(start, end)); } catch (NumberFormatException e) { DWT.error(DWT.ERROR_INVALID_ARGUMENT); } start = end + 1; end = string.indexOf('|', start); if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); int style = 0; try { style = Integer.parseInt(string.substring(start, end)); } catch (NumberFormatException e) { DWT.error(DWT.ERROR_INVALID_ARGUMENT); } start = end + 1; end = string.indexOf('|', start); //data = OS.IsUnicode ? cast(LOGFONT)new LOGFONTW() : new LOGFONTA(); data.lfCharSet = cast(byte)OS.DEFAULT_CHARSET; setName(name); setHeight(height); setStyle(style); if (end is -1) return; char[] platform = string.substring(start, end); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; char[] version2 = string.substring(start, end); if (platform ==/*eq*/ "WINDOWS" && version2 ==/*eq*/ "1") { //$NON-NLS-1$//$NON-NLS-2$ LOGFONT newData;// = OS.IsUnicode ? cast(LOGFONT)new LOGFONTW() : new LOGFONTA(); try { start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfHeight = Integer.parseInt(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfWidth = Integer.parseInt(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfEscapement = Integer.parseInt(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfOrientation = Integer.parseInt(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfWeight = Integer.parseInt(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfItalic = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfUnderline = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfStrikeOut = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfCharSet = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfOutPrecision = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfClipPrecision = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfQuality = Byte.parseByte(string.substring(start, end)); start = end + 1; end = string.indexOf('|', start); if (end is -1) return; newData.lfPitchAndFamily = Byte.parseByte(string.substring(start, end)); start = end + 1; } catch (NumberFormatException e) { setName(name); setHeight(height); setStyle(style); return; } char[] buffer = string.substring(start); int len = Math.min(OS.LF_FACESIZE - 1, buffer.length); newData.lfFaceName[ 0 .. len ] = .StrToTCHARs(buffer)[ 0 .. len ]; data = newData; } } /** * 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 this(char[] name, int height, int style) { if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); setName(name); setHeight(height); setStyle(style); // We set the charset field so that // wildcard searching will work properly // out of the box data.lfCharSet = cast(byte)OS.DEFAULT_CHARSET; } /*public*/ this(char[] name, float height, int style) { if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); setName(name); setHeight(height); setStyle(style); // We set the charset field so that // wildcard searching will work properly // out of the box data.lfCharSet = cast(byte)OS.DEFAULT_CHARSET; } /** * 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 */ override public int opEquals (Object object) { if (object is this) return true; if( auto fd = cast(FontData)object ){ LOGFONT* lf = &fd.data; return data.lfCharSet is lf.lfCharSet && /* * This code is intentionally commented. When creating * a FontData, lfHeight is not necessarily set. Instead * we check the height field which is always set. */ // data.lfHeight is lf.lfHeight && height is fd.height && data.lfWidth is lf.lfWidth && data.lfEscapement is lf.lfEscapement && data.lfOrientation is lf.lfOrientation && data.lfWeight is lf.lfWeight && data.lfItalic is lf.lfItalic && data.lfUnderline is lf.lfUnderline && data.lfStrikeOut is lf.lfStrikeOut && data.lfCharSet is lf.lfCharSet && data.lfOutPrecision is lf.lfOutPrecision && data.lfClipPrecision is lf.lfClipPrecision && data.lfQuality is lf.lfQuality && data.lfPitchAndFamily is lf.lfPitchAndFamily && getName() ==/*eq*/ fd.getName(); } return false; } extern (Windows) static int EnumLocalesProc(TCHAR* lpLocaleString) { /* Get the locale ID */ int length_ = 8; char[] str = .TCHARzToStr( cast(TCHAR*)lpLocaleString, length_); int lcid = Integer.parseInt(str, 16); TCHAR[] buffer = new TCHAR[length_]; /* Check the language */ int size = OS.GetLocaleInfo(lcid, OS.LOCALE_SISO639LANGNAME, buffer.ptr, length_); if (size <= 0 || s_this.lang !=/*eq*/ .TCHARzToStr( buffer.ptr ).substring(0, size - 1)) return 1; /* Check the country */ if (s_this.country !is null) { size = OS.GetLocaleInfo(lcid, OS.LOCALE_SISO3166CTRYNAME, buffer.ptr, length_); if (size <= 0 || s_this.country !=/*eq*/ .TCHARzToStr( buffer.ptr ).substring(0, size - 1)) return 1; } /* Get the charset */ size = OS.GetLocaleInfo(lcid, OS.LOCALE_IDEFAULTANSICODEPAGE, buffer.ptr, length_); if (size <= 0) return 1; int cp = Integer.parseInt(.TCHARzToStr(buffer.ptr).substring(0, size - 1)); CHARSETINFO lpCs; OS.TranslateCharsetInfo(cast(DWORD*)cp, &lpCs, OS.TCI_SRCCODEPAGE); s_this.data.lfCharSet = cast(BYTE)lpCs.ciCharset; return 0; } /** * Returns the height of the receiver in points. * * @return the height of this FontData * * @see #setHeight(int) */ public int getHeight() { return cast(int)(0.5f + height); } /*public*/ float getHeightF() { return height; } /** * Returns 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 where there are multiple character sets for a * given language/country locale, the variant portion of the * locale will determine the character set. * </p> * * @return the <code>String</code> representing a Locale object * @since 3.0 */ public char[] getLocale () { StringBuffer buffer = new StringBuffer (); char sep = '_'; if (lang !is null) { buffer.append (lang); buffer.append (sep); } if (country !is null) { buffer.append (country); buffer.append (sep); } if (variant !is null) { buffer.append (variant); } char[] result = buffer.toString (); int length_ = result.length; if (length_ > 0) { if (result.charAt (length_ - 1) is sep) { result = result.substring (0, length_ - 1); } } return result; } /** * 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 char[] getName() { return .TCHARzToStr( data.lfFaceName.ptr, -1 ); } /** * Returns the style of the receiver which is a bitwise OR of * one or more of the <code>DWT</code> constants NORMAL, BOLD * and ITALIC. * * @return the style of this <code>FontData</code> * * @see #setStyle */ public int getStyle() { int style = DWT.NORMAL; if (data.lfWeight is 700) style |= DWT.BOLD; if (data.lfItalic !is 0) style |= DWT.ITALIC; return style; } /** * Returns an integer hash code for the receiver. Any two * objects that 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 */ override public hash_t toHash () { char[] name = getName(); return data.lfCharSet ^ getHeight() ^ data.lfWidth ^ data.lfEscapement ^ data.lfOrientation ^ data.lfWeight ^ data.lfItalic ^data.lfUnderline ^ data.lfStrikeOut ^ data.lfCharSet ^ data.lfOutPrecision ^ data.lfClipPrecision ^ data.lfQuality ^ data.lfPitchAndFamily ^ typeid(char[]).getHash(&name); } /** * 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) DWT.error(DWT.ERROR_INVALID_ARGUMENT); this.height = height; } /*public*/ void setHeight(float height) { if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); this.height = height; } /** * 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 where 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(char[] locale) { lang = country = variant = null; if (locale !is null) { char sep = '_'; int length_ = locale.length; int firstSep, secondSep; firstSep = locale.indexOf(sep); if (firstSep is -1) { firstSep = secondSep = length_; } else { secondSep = locale.indexOf(sep, firstSep + 1); if (secondSep is -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); } if (lang is null) { data.lfCharSet = cast(byte)OS.DEFAULT_CHARSET; } else { synchronized(this.classinfo){ s_this = this; OS.EnumSystemLocales(&EnumLocalesProc, OS.LCID_SUPPORTED); s_this = null; } } } /** * 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(char[] name) { if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); /* The field lfFaceName must be NULL terminated */ int len = Math.min(OS.LF_FACESIZE - 1, name.length); data.lfFaceName[0 .. len] = .StrToTCHARs(name)[0 .. len]; data.lfFaceName[len] = 0; } /** * Sets the style of the receiver to the argument which must * be a bitwise OR of one or more of the <code>DWT</code> * constants NORMAL, BOLD and ITALIC. All other style bits are * ignored. * * @param style the new style for this <code>FontData</code> * * @see #getStyle */ public void setStyle(int style) { if ((style & DWT.BOLD) is DWT.BOLD) { data.lfWeight = 700; } else { data.lfWeight = 0; } if ((style & DWT.ITALIC) is DWT.ITALIC) { data.lfItalic = 1; } else { data.lfItalic = 0; } } /** * 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 */ override public char[] toString() { StringBuffer buffer = new StringBuffer(); buffer.append("1|"); //$NON-NLS-1$ buffer.append(getName()); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(getHeightF())); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(getStyle())); buffer.append("|"); //$NON-NLS-1$ buffer.append("WINDOWS|1|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfHeight)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfWidth)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfEscapement)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfOrientation)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfWeight)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfItalic)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfUnderline)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfStrikeOut)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfCharSet)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfOutPrecision)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfClipPrecision)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfQuality)); buffer.append("|"); //$NON-NLS-1$ buffer.append(to!(char[])(data.lfPitchAndFamily)); buffer.append("|"); //$NON-NLS-1$ buffer.append(getName()); return buffer.toString(); } /** * Invokes platform specific functionality to allocate a new font data. * <p> * <b>IMPORTANT:</b> This method is <em>not</em> part of the public * API for <code>FontData</code>. It is marked public only so that * it can be shared within the packages provided by DWT. It is not * available on all platforms, and should never be called from * application code. * </p> * * @param data the <code>LOGFONT</code> for the font data * @param height the height of the font data * @return a new font data object containing the specified <code>LOGFONT</code> and height */ public static FontData win32_new(LOGFONT* data, float height) { return new FontData(data, height); } }