Mercurial > projects > dwt-mac
view dwt/graphics/Font.d @ 156:969e7de37c3d default tip
Fixes to get dwt to work with dmd and ldc
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 08 Jul 2009 21:56:44 +0200 |
parents | 62202ce0039f |
children |
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/******************************************************************************* * Copyright (c) 2000, 2008 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: * Jacob Carlborg <doob@me.com> *******************************************************************************/ module dwt.graphics.Font; import dwt.DWT; import dwt.DWTError; import dwt.DWTException; import dwt.internal.cocoa.NSAutoreleasePool; import dwt.internal.cocoa.NSFont; import dwt.internal.cocoa.NSString; import dwt.internal.cocoa.NSThread; import tango.stdc.stringz; import tango.text.convert.Format; static import tango.text.convert.Utf; import dwt.dwthelper.utils; import dwt.graphics.Device; import dwt.graphics.FontData; import dwt.graphics.Point; import dwt.graphics.Resource; import Carbon = dwt.internal.c.Carbon; /** * Instances of this class manage operating system resources that * define how text looks when it is displayed. Fonts may be constructed * by providing a device and either name, size and style information * or a <code>FontData</code> object which encapsulates this data. * <p> * Application code must explicitly invoke the <code>Font.dispose()</code> * method to release the operating system resources managed by each instance * when those instances are no longer required. * </p> * * @see FontData * @see <a href="http://www.eclipse.org/swt/snippets/#font">Font snippets</a> * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Examples: GraphicsExample, PaintExample</a> * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public final class Font : Resource { alias Resource.init_ init_; /** * the handle to the OS font resource * (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 NSFont handle; this(Device device) { super(device); } /** * Constructs a new font given a device and font data * which describes the desired font's appearance. * <p> * You must dispose the font when it is no longer required. * </p> * * @param device the device to create the font on * @param fd the FontData that describes the desired font (must not be null) * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> * <li>ERROR_NULL_ARGUMENT - if the fd argument is null</li> * </ul> * @exception DWTError <ul> * <li>ERROR_NO_HANDLES - if a font could not be created from the given font data</li> * </ul> */ public this(Device device, FontData fd) { super(device); if (fd is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { init_(fd.getName(), fd.getHeightF(), fd.getStyle(), fd.nsName); init_(); } finally { if (pool !is null) pool.release(); } } /** * Constructs a new font given a device and an array * of font data which describes the desired font's * appearance. * <p> * You must dispose the font when it is no longer required. * </p> * * @param device the device to create the font on * @param fds the array of FontData that describes the desired font (must not be null) * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> * <li>ERROR_NULL_ARGUMENT - if the fds argument is null</li> * <li>ERROR_INVALID_ARGUMENT - if the length of fds is zero</li> * <li>ERROR_NULL_ARGUMENT - if any fd in the array is null</li> * </ul> * @exception DWTError <ul> * <li>ERROR_NO_HANDLES - if a font could not be created from the given font data</li> * </ul> * * @since 2.1 */ public this(Device device, FontData[] fds) { super(device); if (fds is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); if (fds.length is 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); for (int i=0; i<fds.length; i++) { if (fds[i] is null) DWT.error(DWT.ERROR_INVALID_ARGUMENT); } NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { FontData fd = fds[0]; init_(fd.getName(), fd.getHeightF(), fd.getStyle(), fd.nsName); init_(); } finally { if (pool !is null) pool.release(); } } /** * Constructs a new font given a device, a font name, * the height of the desired font in points, and a font * style. * <p> * You must dispose the font when it is no longer required. * </p> * * @param device the device to create the font on * @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 - if device is null and there is no current device</li> * <li>ERROR_NULL_ARGUMENT - if the name argument is null</li> * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> * </ul> * @exception DWTError <ul> * <li>ERROR_NO_HANDLES - if a font could not be created from the given arguments</li> * </ul> */ public this(Device device, String name, int height, int style) { super(device); NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { init_(name, height, style, null); init_(); } finally { if (pool !is null) pool.release(); } } //FIXME: Jacob Carlborg /*public*/ this(Device device, String name, float height, int style) { super(device); init_(name, height, style, null); init_(); } void destroy() { handle.release(); handle = null; } /** * 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 int opEquals(Object object) { if (object is this) return true; if (!( null !is cast(Font)object )) return false; Font font = cast(Font)object; return handle is font.handle; } alias opEquals equals; /** * Returns an array of <code>FontData</code>s representing the receiver. * On Windows, only one FontData will be returned per font. On X however, * a <code>Font</code> object <em>may</em> be composed of multiple X * fonts. To support this case, we return an array of font data objects. * * @return an array of font data objects describing the receiver * * @exception DWTException <ul> * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> * </ul> */ public FontData[] getFontData() { if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); NSAutoreleasePool pool = null; if (!NSThread.isMainThread()) pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); try { NSString family = handle.familyName(); String name = family.getString(); NSString str = handle.fontName(); String nsName = str.getString(); int style = DWT.NORMAL; if (nsName.indexOf("Italic") !is -1) style |= DWT.ITALIC; if (nsName.indexOf("Bold") !is -1) style |= DWT.BOLD; Point dpi = device.dpi, screenDPI = device.getScreenDPI(); FontData data = new FontData(name, cast(float)/*64*/handle.pointSize() * screenDPI.y / dpi.y, style); data.nsName = nsName; return [data]; } finally { if (pool !is null) pool.release(); } } /** * Invokes platform specific functionality to allocate a new font. * <p> * <b>IMPORTANT:</b> This method is <em>not</em> part of the public * API for <code>Font</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 device the device on which to allocate the color * @param handle the handle for the font * @param style the style for the font * @param size the size for the font * * @private */ public static Font cocoa_new(Device device, NSFont handle) { Font font = new Font(device); font.handle = handle; font.handle.retain(); return font; } /** * 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 */ public hash_t toHash() { return handle !is null ? cast(hash_t) handle.id : 0; } alias toHash hashCode; void init_(String name, float height, int style, String nsName) { //if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); Point dpi = device.dpi, screenDPI = device.getScreenDPI(); float size = height * dpi.y / screenDPI.y; if (nsName !is null) { handle = NSFont.fontWithName(NSString.stringWith(nsName), size); } else { nsName = name; if ((style & DWT.BOLD) !is 0) nsName ~= " Bold"; if ((style & DWT.ITALIC) !is 0) nsName ~= " Italic"; handle = NSFont.fontWithName(NSString.stringWith(nsName), size); if (handle is null && (style & DWT.ITALIC) !is 0) { nsName = name; if ((style & DWT.BOLD) !is 0) nsName ~= " Bold"; handle = NSFont.fontWithName(NSString.stringWith(nsName), size); } if (handle is null && (style & DWT.BOLD) !is 0) { nsName = name; handle = NSFont.fontWithName(NSString.stringWith(nsName), size); } } if (handle is null) { handle = device.systemFont.handle; } handle.retain(); } /** * Returns <code>true</code> if the font has been disposed, * and <code>false</code> otherwise. * <p> * This method gets the dispose state for the font. * When a font has been disposed, it is an error to * invoke any other method using the font. * * @return <code>true</code> when the font is disposed and <code>false</code> otherwise */ public bool isDisposed() { return handle is null; } /** * Returns a string containing a concise, human-readable * description of the receiver. * * @return a string representation of the receiver */ public String toString () { if (isDisposed()) return "Font {*DISPOSED*}"; return Format("Font {{}{}" , handle , "}"); } }