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import org.kde.qt.*;
import org.kde.koala.*;
//
// Simple little hack to show off blending effects.
//
// (C) KDE Artistic Cristian Tibirna <tibirna@kde.org>
//
/**
* Class to test KImageEffect blending effects.
*
* This is a translation to java from kblendtest.cpp in the tests library
* of kdeui source.
*
* @see KApplication
* @see KImageEffect
*
* @author Cristian Tibirna <tibirna@kde.org>, java translation Kenneth J. Pouncey, kjpou@hotmail.com
* @version 0.1
*/
public class KBlendTest {
public static void main(String[] args) {
KCmdLineArgs.init(args, "kblendtest", "KBlendTest", "It blends!", "0.1");
KApplication app = new KApplication();
KBlendWidget w = new KBlendWidget(null,"KBlendTest");
w.setCaption(app.name());
app.setMainWidget(w);
w.show();
app.exec();
return;
}
public static class KBlendWidget extends QWidget {
QImage image;
QColor bgnd;
String testImage = "testimage.png";
public KBlendWidget (QWidget parent, String name) {
// change the colors to see the effects.
// bgnd = new QColor(QColor.qRgb(255, 255, 255));
bgnd = Qt.blue();
// bgnd = Qt.red();
image = new QImage(testImage);
resize(image.width()*2+60, image.height()*3+80);
setBackgroundColor(bgnd);
}
protected void paintEvent(QPaintEvent pe ) {
long it, ft;
String say = "";
image = new QImage(testImage);
QPainter p = new QPainter(this);
p.setPen(Qt.black());
// you see here use of anti_dir param (blend from down to up, here)
it = System.currentTimeMillis();
KImageEffect.blend(image, 0.2f, bgnd, KImageEffect.VerticalGradient,true);
ft = System.currentTimeMillis();
say = (ft - it) + " ms, Vertical";
p.drawImage(20, 20, image);
p.drawText(5 , 15, say);
image = new QImage(testImage);
// here a negative initial intensity is used (1/2 of image is unaffected)
it = System.currentTimeMillis();
KImageEffect.blend(image, -0.5f, bgnd, KImageEffect.HorizontalGradient);
ft = System.currentTimeMillis();
say = (ft - it) + " ms, Horizontal";
p.drawImage(40+image.width(), 20, image);
p.drawText(15+image.width() , 15, say);
image = new QImage(testImage);
it = System.currentTimeMillis();
KImageEffect.blend(image, 0.0f, bgnd, KImageEffect.DiagonalGradient,true);
ft = System.currentTimeMillis();
say = (ft - it) + " ms, Diagonal";
p.drawImage(20, 40+image.height(), image);
p.drawText(5 , 35+image.height(), say);
image = new QImage(testImage);
it = System.currentTimeMillis();
KImageEffect.blend(image, 0.1f, bgnd, KImageEffect.CrossDiagonalGradient);
ft = System.currentTimeMillis();
say = (ft - it) + " ms, CrossDiagonal";
p.drawImage(40+image.width(), 40+image.height(), image);
p.drawText(25+image.width() , 35 + image.height(), say);
image = new QImage(testImage);
it = System.currentTimeMillis();
KImageEffect.blend(image, -0.6f, bgnd, KImageEffect.RectangleGradient);
ft = System.currentTimeMillis();
say = (ft - it) + " ms, Rectangle";
p.drawImage(20, 60+2*image.height(), image);
p.drawText(5 , 55+2*image.height(), say);
image = new QImage(testImage);
it = System.currentTimeMillis();
KImageEffect.blend(image, 0.2f, bgnd, KImageEffect.EllipticGradient);
ft = System.currentTimeMillis();
say = (ft - it) + " ms, Elliptic";
p.drawImage(40+image.width(), 60+2*image.height(), image);
p.drawText(25+image.width(), 55+2*image.height(), say);
p.end();
}
}
static {
qtjava.initialize();
kdejava.initialize();
}
}
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