/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.model.icons.impl;
import java.io.*;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.jboss.tools.common.model.*;
import org.jboss.tools.common.model.plugin.ModelPlugin;
public class XStudioIcons implements ImageComponent {
private static final String code = "abcdefghijklmnop"; //$NON-NLS-1$
public XStudioIcons() {}
public String getImageString(String filename) {
byte[] b = getBytes(filename);
return (b == null) ? "" : encode(b); //$NON-NLS-1$
}
public String encode(byte[] b) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < b.length; i++) {
int h = 128 + b[i];
sb.append(code.charAt(h / 16));
sb.append(code.charAt(h % 16));
}
return sb.toString();
}
public byte[] decode(String s) {
byte[] b = new byte[2*s.length()];
int i = 0, k = 0;
while(i < s.length()) {
char c1 = s.charAt(i), c2 = s.charAt(i + 1);
b[k] = (byte)(16 * code.indexOf(c1) + code.indexOf(c2) - 128);
i += 2;
++k;
}
return b;
}
private byte[] getBytes(String filename) {
File f = new File(filename);
if(!f.isFile()) return new byte[0];
byte[] b = null;
FileInputStream fr = null;
try {
fr = new FileInputStream(f);
int length = fr.available();
b = new byte[length];
int i = 0;
while(i < length) {
i += fr.read(b, i, length - i);
}
} catch (IOException e) {
b = new byte[0];
} finally {
if(fr != null) {
try {
fr.close();
} catch (IOException e) {
// ignore
}
}
}
return b;
}
public int getHash(XModelObject obj) {
String s = obj.getAttributeValue("image"); //$NON-NLS-1$
return (s == null || s.trim().length() == 0) ? "defaultimage".hashCode() : s.hashCode(); //$NON-NLS-1$
}
public Image getImage(XModelObject obj) {
String s = obj.getAttributeValue("image"); //$NON-NLS-1$
ImageRegistry registry = ModelPlugin.getDefault().getImageRegistry();
Image result = null;
synchronized(registry) {
result = registry.get(s);
}
if(result != null && !result.isDisposed()) {
return result;
}
byte[] b = decode(s);
if(b != null) {
try {
ByteArrayInputStream is = new ByteArrayInputStream(b);
ImageData id = new ImageData(is);
Image i = new Image(null, id);
synchronized(registry) {
registry.remove(s);
registry.put(s, i);
}
return i;
} catch (SWTException e) {
ModelPlugin.getPluginLog().logError(e);
} catch (SWTError e) {
ModelPlugin.getPluginLog().logError(e);
}
}
return obj.getModelEntity().getMetaModel().getIconList().getImage("default.unknown"); //$NON-NLS-1$
}
}