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package aurelienribon.utils.swing;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.TexturePaint;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
/**
* @author Aurelien Ribon | http://www.aurelienribon.com
*/
public class ImagePanel extends JPanel {
private BufferedImage background;
private BufferedImage image;
private boolean useRegion;
private int x, y, width, height;
public void setBackground(URL bgURL) {
try {
background = ImageIO.read(bgURL);
} catch (IOException ex) {
}
}
public void clearImage() {
image = null;
repaint();
}
public void setImage(BufferedImage img) {
image = img;
repaint();
}
public void setImage(File img) {
setImage(img, 0, 0, 0, 0);
useRegion = false;
}
public void setImage(URL imgUrl) {
setImage(imgUrl, 0, 0, 0, 0);
useRegion = false;
}
public void setImage(File img, int x, int y, int width, int height) {
this.x = x;
this.y = y;
this.width = width;
this.height = height;
useRegion = true;
try {
image = img != null ? ImageIO.read(img) : null;
repaint();
} catch (IOException ex) {
Logger.getLogger(ImagePanel.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void setImage(URL imgUrl, int x, int y, int width, int height) {
this.x = x;
this.y = y;
this.width = width;
this.height = height;
useRegion = true;
try {
image = imgUrl != null ? ImageIO.read(imgUrl) : null;
repaint();
} catch (IOException ex) {
Logger.getLogger(ImagePanel.class.getName()).log(Level.SEVERE, null, ex);
}
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D gg = (Graphics2D)g;
gg.setColor(Color.LIGHT_GRAY);
gg.fillRect(0, 0, getWidth(), getHeight());
if (background != null) {
TexturePaint paint = new TexturePaint(background, new Rectangle(0, 0, background.getWidth(), background.getHeight()));
gg.setPaint(paint);
gg.fillRect(0, 0, getWidth(), getHeight());
gg.setPaint(null);
}
if (image != null && !useRegion) {
float panelRatio = (float)getWidth() / (float)getHeight();
float imgRatio = (float)image.getWidth() / (float)image.getHeight();
if (imgRatio > panelRatio) {
float tw = (float)getWidth();
float th = (float)getWidth() / imgRatio;
gg.drawImage(image, 0, (int)(getHeight()/2 - th/2), (int) tw, (int) th, null);
} else {
float tw = (float)getHeight() * imgRatio;
float th = (float)getHeight();
gg.drawImage(image, (int)((float)getWidth()/2 - tw/2), 0, (int) tw, (int) th, null);
}
} else if (image != null && useRegion) {
float panelRatio = (float)getWidth() / (float)getHeight();
float imgRatio = (float)width / (float)height;
if (imgRatio > panelRatio) {
int tw = getWidth();
int th = (int) (getWidth() / imgRatio);
int tx = 0;
int ty = getHeight()/2 - th/2;
gg.drawImage(image, tx, ty, tx + tw, ty + th, x, y, x + width, y + width, null);
} else {
int tw = (int) (getHeight() * imgRatio);
int th = getHeight();
int tx = getWidth()/2 - tw/2;
int ty = 0;
gg.drawImage(image, tx, ty, tx + tw, ty + th, x, y, x + width, y + width, null);
}
}
}
}
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