// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.consoleproxy.vnc;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.List;
import com.cloud.consoleproxy.util.ImageHelper;
import com.cloud.consoleproxy.util.TileInfo;
/**
* A <code>BuffereImageCanvas</code> component represents frame buffer image on the
* screen. It also notifies its subscribers when screen is repainted.
*/
public class BufferedImageCanvas extends Canvas implements FrameBufferCanvas {
private static final long serialVersionUID = 1L;
// Offline screen buffer
private BufferedImage offlineImage;
// Cached Graphics2D object for offline screen buffer
private Graphics2D graphics;
private PaintNotificationListener listener;
public BufferedImageCanvas(PaintNotificationListener listener, int width, int height) {
super();
this.listener = listener;
setBackground(Color.black);
setFocusable(true);
// Don't intercept TAB key
setFocusTraversalKeysEnabled(false);
setCanvasSize(width, height);
}
public void setCanvasSize(int width, int height) {
this.offlineImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
graphics = offlineImage.createGraphics();
setSize(offlineImage.getWidth(), offlineImage.getHeight());
}
@Override
public void update(Graphics g) {
// Call paint() directly, without clearing screen first
paint(g);
}
@Override
public void paint(Graphics g) {
// Only part of image, requested with repaint(Rectangle), will be
// painted on screen.
synchronized(offlineImage) {
g.drawImage(offlineImage, 0, 0, this);
}
// Notify server that update is painted on screen
listener.imagePaintedOnScreen();
}
public BufferedImage getOfflineImage() {
return offlineImage;
}
public Graphics2D getOfflineGraphics() {
return graphics;
}
public void copyTile(Graphics2D g, int x, int y, Rectangle rc) {
synchronized(offlineImage) {
g.drawImage(offlineImage, x, y, x + rc.width, y + rc.height,
rc.x, rc.y, rc.x + rc.width, rc.y + rc.height, null);
}
}
@Override
public Image getFrameBufferScaledImage(int width, int height) {
if(offlineImage != null)
return offlineImage.getScaledInstance(width, height, Image.SCALE_DEFAULT);
return null;
}
@Override
public byte[] getFrameBufferJpeg() {
int width = 800;
int height = 600;
width = offlineImage.getWidth();
height = offlineImage.getHeight();
BufferedImage bufferedImage = new BufferedImage(width, height,
BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g = bufferedImage.createGraphics();
synchronized(offlineImage) {
g.drawImage(offlineImage, 0, 0, width, height, 0, 0, width, height, null);
}
byte[] imgBits = null;
try {
imgBits = ImageHelper.jpegFromImage(bufferedImage);
} catch (IOException e) {
}
return imgBits;
}
@Override
public byte[] getTilesMergedJpeg(List<TileInfo> tileList, int tileWidth, int tileHeight) {
int width = Math.max(tileWidth, tileWidth*tileList.size());
BufferedImage bufferedImage = new BufferedImage(width, tileHeight,
BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g = bufferedImage.createGraphics();
synchronized(offlineImage) {
int i = 0;
for(TileInfo tile : tileList) {
Rectangle rc = tile.getTileRect();
g.drawImage(offlineImage, i*tileWidth, 0, i*tileWidth + rc.width, rc.height,
rc.x, rc.y, rc.x + rc.width, rc.y + rc.height, null);
i++;
}
}
byte[] imgBits = null;
try {
imgBits = ImageHelper.jpegFromImage(bufferedImage);
} catch (IOException e) {
}
return imgBits;
}
}