// uniCenta oPOS - Touch Friendly Point Of Sale
// Copyright (c) 2009-2013 uniCenta
// http://www.unicenta.net/unicentaopos
//
// This file is part of uniCenta oPOS
//
// uniCenta oPOS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// uniCenta oPOS 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 uniCenta oPOS. If not, see <http://www.gnu.org/licenses/>.
package com.openbravo.pos.util;
import java.awt.image.*;
import java.awt.*;
import javax.imageio.ImageIO;
import javax.swing.JLabel;
public class ThumbNailBuilder {
private Image m_imgdefault;
private int m_width;
private int m_height;
/** Creates a new instance of ThumbNailBuilder */
public ThumbNailBuilder(int width, int height) {
init(width, height, null);
}
public ThumbNailBuilder(int width, int height, Image imgdef) {
init(width, height, imgdef);
}
public ThumbNailBuilder(int width, int height, String img) {
Image defimg;
try {
init(width, height, ImageIO.read(getClass().getClassLoader().getResourceAsStream(img)));
} catch (Exception fnfe) {
init(width, height, null);
}
}
private void init(int width, int height, Image imgdef) {
m_width = width;
m_height = height;
if (imgdef == null) {
m_imgdefault = null;
} else {
m_imgdefault = createThumbNail(imgdef);
}
}
public Image getThumbNail(Image img) {
if (img == null) {
return m_imgdefault;
} else {
return createThumbNail(img);
}
}
public Image getThumbNailText(Image img, String text) {
img = getThumbNail(img);
BufferedImage imgtext = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = imgtext.createGraphics();
// The text
JLabel label = new JLabel();
label.setOpaque(false);
label.setText(text);
//label.setText("<html><center>Line1<br>Line2");
label.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
label.setVerticalAlignment(javax.swing.SwingConstants.BOTTOM);
Dimension d = label.getPreferredSize();
label.setBounds(0, 0, imgtext.getWidth(), d.height);
// The background
Color c1 = new Color(0xff, 0xff, 0xff, 0x40);
Color c2 = new Color(0xff, 0xff, 0xff, 0xd0);
// Point2D center = new Point2D.Float(imgtext.getWidth() / 2, label.getHeight());
// float radius = imgtext.getWidth() / 3;
// float[] dist = {0.1f, 1.0f};
// Color[] colors = {c2, c1};
// Paint gpaint = new RadialGradientPaint(center, radius, dist, colors);
Paint gpaint = new GradientPaint(new Point(0,0), c1, new Point(label.getWidth() / 2, 0), c2, true);
g2d.drawImage(img, 0, 0, null);
g2d.translate(0, imgtext.getHeight() - label.getHeight());
g2d.setPaint(gpaint);
g2d.fillRect(0 , 0, imgtext.getWidth(), label.getHeight());
label.paint(g2d);
g2d.dispose();
return imgtext;
}
private Image createThumbNail(Image img) {
// MaskFilter filter = new MaskFilter(Color.WHITE);
// ImageProducer prod = new FilteredImageSource(img.getSource(), filter);
// img = Toolkit.getDefaultToolkit().createImage(prod);
int targetw;
int targeth;
double scalex = (double) m_width / (double) img.getWidth(null);
double scaley = (double) m_height / (double) img.getHeight(null);
if (scalex < scaley) {
targetw = m_width;
targeth = (int) (img.getHeight(null) * scalex);
} else {
targetw = (int) (img.getWidth(null) * scaley);
targeth = (int) m_height;
}
int midw = img.getWidth(null);
int midh = img.getHeight(null);
BufferedImage midimg = null;
Graphics2D g2d = null;
Image previmg = img;
int prevw = img.getWidth(null);
int prevh = img.getHeight(null);
do {
if (midw > targetw) {
midw /= 2;
if (midw < targetw) {
midw = targetw;
}
} else {
midw = targetw;
}
if (midh > targeth) {
midh /= 2;
if (midh < targeth) {
midh = targeth;
}
} else {
midh = targeth;
}
if (midimg == null) {
midimg = new BufferedImage(midw, midh, BufferedImage.TYPE_INT_ARGB);
g2d = midimg.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
}
g2d.drawImage(previmg, 0, 0, midw, midh, 0, 0, prevw, prevh, null);
prevw = midw;
prevh = midh;
previmg = midimg;
} while (midw != targetw || midh != targeth);
g2d.dispose();
if (m_width != midimg.getWidth() || m_height != midimg.getHeight()) {
midimg = new BufferedImage(m_width, m_height, BufferedImage.TYPE_INT_ARGB);
int x = (m_width > targetw) ? (m_width - targetw) / 2 : 0;
int y = (m_height > targeth) ? (m_height - targeth) / 2 : 0;
g2d = midimg.createGraphics();
g2d.drawImage(previmg, x, y, x + targetw, y + targeth,
0, 0, targetw, targeth, null);
g2d.dispose();
previmg = midimg;
}
return previmg;
}
}