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#include "kblendtest.h"
#include <kapplication.h>
#include <kimageeffect.h>
#include <qpainter.h>
#include <qdatetime.h>
#include <qstring.h>
int cols = 3, rows = 3; // how many
KBlendWidget::KBlendWidget(QWidget *parent, const char *name)
:QWidget(parent, name)
{
bgnd = qRgb(255, 255, 255);
image = QImage("testimage.png");
resize(image.width()*2+60, image.height()*3+80);
setBackgroundColor(bgnd);
}
void KBlendWidget::paintEvent(QPaintEvent */*ev*/)
{
QTime time;
int it, ft;
QString say;
image = QImage("testimage.png");
QPainter p(this);
p.setPen(Qt::black);
// you see here use of anti_dir param (blend from down to up, here)
time.start();
it = time.elapsed();
KImageEffect::blend(image, 0.2, bgnd, KImageEffect::VerticalGradient,true);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Vertical";
p.drawImage(20, 20, image);
p.drawText(5 , 15, say);
image = QImage("testimage.png");
// here a negative initial intensity is used (1/2 of image is unaffected)
it = time.elapsed();
KImageEffect::blend(image, -0.5, bgnd, KImageEffect::HorizontalGradient);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Horizontal";
p.drawImage(40+image.width(), 20, image);
p.drawText(15+image.width() , 15, say);
image = QImage("testimage.png");
it = time.elapsed();
KImageEffect::blend(image, 0., bgnd, KImageEffect::DiagonalGradient,true);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Diagonal";
p.drawImage(20, 40+image.height(), image);
p.drawText(5 , 35+image.height(), say);
image = QImage("testimage.png");
it = time.elapsed();
KImageEffect::blend(image, 0.1, bgnd, KImageEffect::CrossDiagonalGradient);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, CrossDiagonal";
p.drawImage(40+image.width(), 40+image.height(), image);
p.drawText(25+image.width() , 35 + image.height(), say);
image = QImage("testimage.png");
it = time.elapsed();
KImageEffect::blend(image, -0.6, bgnd, KImageEffect::RectangleGradient);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Rectangle";
p.drawImage(20, 60+2*image.height(), image);
p.drawText(5 , 55+2*image.height(), say);
image = QImage("testimage.png");
it = time.elapsed();
KImageEffect::blend(image, 0.2, bgnd, KImageEffect::EllipticGradient);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Elliptic";
p.drawImage(40+image.width(), 60+2*image.height(), image);
p.drawText(25+image.width(), 55+2*image.height(), say);
p.end();
}
int main(int argc, char **argv)
{
KApplication app(argc, argv, "KBlendTest");
KBlendWidget w;
app.setMainWidget(&w);
w.show();
return(app.exec());
}
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