Mercurial > projects > dwt-addons
view dwtx/jface/resource/URLImageDescriptor.d @ 4:c87617952847
some JFace modules
author | Frank Benoit <benoit@tionex.de> |
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date | Fri, 28 Mar 2008 17:08:33 +0100 |
parents | |
children | ea8ff534f622 |
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/******************************************************************************* * Copyright (c) 2000, 2006 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 dwtx.jface.resource.URLImageDescriptor; import dwtx.jface.resource.ImageDescriptor; // import java.io.BufferedInputStream; // import java.io.IOException; // import java.io.InputStream; import tango.net.Uri; import dwt.DWT; import dwt.DWTException; import dwt.graphics.ImageData; import dwt.dwthelper.utils; import dwt.dwthelper.BufferedInputStream; import dwt.dwthelper.InputStream; /** * An ImageDescriptor that gets its information from a URL. * This class is not public API. Use ImageDescriptor#createFromURL * to create a descriptor that uses a URL. */ class URLImageDescriptor : ImageDescriptor { private Uri url; /** * Creates a new URLImageDescriptor. * @param url The URL to load the image from. Must be non-null. */ this(Uri url) { this.url = url; } /* (non-Javadoc) * Method declared on Object. */ public bool equals(Object o) { if (!(cast(URLImageDescriptor)o )) { return false; } return (cast(URLImageDescriptor) o).url.opEquals(this.url) !is 0; } /* (non-Javadoc) * Method declared on ImageDesciptor. * Returns null if the image data cannot be read. */ public ImageData getImageData() { ImageData result = null; InputStream in_ = getStream(); if (in_ !is null) { scope(exit) in_.close(); try { result = new ImageData(in_); } catch (DWTException e) { if (e.code !is DWT.ERROR_INVALID_IMAGE) { throw e; // fall through otherwise } } } return result; } /** * Returns a stream on the image contents. Returns * null if a stream could not be opened. * @return the stream for loading the data */ protected InputStream getStream() { implMissing( __FILE__, __LINE__ ); return null; //FIXME /+ try { return new BufferedInputStream(url.openStream()); } catch (IOException e) { return null; } +/ } /* (non-Javadoc) * Method declared on Object. */ public override hash_t toHash() { return url.toHash(); } /* (non-Javadoc) * Method declared on Object. */ /** * The <code>URLImageDescriptor</code> implementation of this <code>Object</code> method * returns a string representation of this object which is suitable only for debugging. */ public override String toString() { return "URLImageDescriptor(" ~ url.toString ~ ")"; //$NON-NLS-1$ //$NON-NLS-2$ } }