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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed 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 net.java.sip.communicator.plugin.desktoputil;
import java.awt.*;
import javax.swing.*;
/**
* @author Lubomir Marinov
*/
public class ImageCanvas
extends TransparentPanel
{
/**
* Serial version UID.
*/
private static final long serialVersionUID = 0L;
private ImageIcon icon;
/**
* Constructor.
*
* @param image the image for the canvas
*/
public ImageCanvas(Image image)
{
setImage(image);
}
@Override
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
if (icon == null)
return;
int imageWidth = icon.getIconWidth();
if (imageWidth < 1)
return;
int imageHeight = icon.getIconHeight();
if (imageHeight < 1)
return;
int width = getWidth();
boolean scale = false;
float scaleFactor = 1;
if (imageWidth > width)
{
scale = true;
scaleFactor = width / (float) imageWidth;
}
int height = getHeight();
if (imageHeight > height)
{
scale = true;
scaleFactor = Math.min(scaleFactor, height / (float) imageHeight);
}
if (scale)
{
imageWidth = Math.round(imageWidth * scaleFactor);
imageHeight = Math.round(imageHeight * scaleFactor);
}
g.drawImage(icon.getImage(), (width - imageWidth) / 2,
(height - imageHeight) / 2, imageWidth, imageHeight, null);
}
/**
* Sets image to be painted.
* @param image Image to be painted.
*/
public void setImage(Image image)
{
icon = (image == null) ? null : new ImageIcon(image);
if (icon != null)
{
final int preferredWidth = icon.getIconWidth();
final int preferredHeight = icon.getIconHeight();
setMinimumSize(new Dimension(preferredWidth, preferredHeight));
setPreferredSize(new Dimension(preferredWidth, preferredHeight));
}
}
}
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