/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.karaf.diagnostic.demo;
import java.awt.DisplayMode;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import org.apache.karaf.diagnostic.core.DumpDestination;
import org.apache.karaf.diagnostic.core.DumpProvider;
/**
* This demo provider creates images in dump destination which
* contains screenshots from all attached displays.
*/
public class ScreenshotDumpProvider implements DumpProvider {
/**
* {@inheritDoc}
*/
public void createDump(DumpDestination destination) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
// get all graphic devices attached to computer
GraphicsDevice[] gs = ge.getScreenDevices();
// create dump entry for each device
for (int i=0; i < gs.length; i++) {
DisplayMode mode = gs[i].getDisplayMode();
Rectangle bounds = new Rectangle(0, 0, mode.getWidth(), mode.getHeight());
BufferedImage screenshot = new Robot(gs[i]).createScreenCapture(bounds);
// to attach your entry to destination you have to execute this line
OutputStream outputStream = destination.add("screenshot/display_" + i + ".png");
ImageIO.write(screenshot, "PNG", outputStream);
outputStream.close();
}
}
}