/*
* BlinzCore - core library of audio, video, and other essential classes.
* Copyright (C) 2009-2010 BlinzProject <gtalent2@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.blinz.graphics;
import java.io.IOException;
import java.util.Vector;
import org.blinz.util.Clients;
/**
* Has static methods used for loading Images.
* @author Blinz Project
*/
public final class ImageLoader {
/**
* Catalog of existing ImageStubs
*/
private static final Vector<ImageStub> stubs = new Vector<ImageStub>();
/**
* Loads an image object associated from the given path.
* @param path the path to the image
* @return an Image object representing the file at the given path
*/
public final static Image loadImage(final String path) throws IOException {
for (final ImageStub s : stubs) {
if (s.getPath().equals(path) && s.type == ImageStub.SourceType.LOCAL) {
s.incrementClient(Clients.localProcess());
return new Image(s);
}
}
final ImageStub stub = new ImageStub(path, ImageStub.SourceType.LOCAL);
stubs.add(stub);
return new Image(stub);
}
/**
* Loads an image object associated from the given URL.
* @param url the URL of the image
* @return an image object associated with the given URL
*/
public final static Image loadImageHTTP(final String url) throws IOException {
for (final ImageStub s : stubs) {
if (s.getPath().equals(url) && s.type == ImageStub.SourceType.HTTP) {
s.incrementClient(Clients.localProcess());
return new Image(s);
}
}
final ImageStub stub = new ImageStub(url, ImageStub.SourceType.HTTP);
stubs.add(stub);
return new Image(stub);
}
/**
* Removes Images that are no longer in use.
*/
static final void clearImages() {
for (int i = 0; i < stubs.size();) {
if (stubs.get(i).dependents() == 0) {
stubs.remove(i).dumpImage();
} else {
i++;
}
}
}
/**
* Dumps the image data stored in memory.
*/
static final void dumpImageData() {
for (final ImageStub stub : stubs) {
stub.dumpImage();
}
}
}
|