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#include "kdesattest.h"
#include <kapplication.h>
#include <kimageeffect.h>
#include <qpainter.h>
#include <qdatetime.h>
#include <qstring.h>
int cols = 3, rows = 3; // how many
KDesatWidget::KDesatWidget(QWidget *parent, const char *name)
:QWidget(parent, name)
{
image = QImage("testimage.png");
slide = new KDoubleNumInput(700, this, "desat");
slide->setRange(0, 1, 0.001);
slide->setLabel("Desaturate: ", AlignVCenter | AlignLeft);
connect(slide,SIGNAL(valueChanged(double)), this, SLOT(change(double)));
resize(image.width()*2, image.height() + slide->height());
slide->setGeometry(0, image.height(), image.width()*2, slide->height());
}
void KDesatWidget::change(double) {
desat_value = slide->value();
repaint(false);
}
void KDesatWidget::paintEvent(QPaintEvent */*ev*/)
{
QTime time;
int it, ft;
QString say;
QPainter p(this);
p.setPen(Qt::black);
// original image
time.start();
it = time.elapsed();
image = QImage("testimage.png");
p.drawImage(0, 0, image);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Vertical";
p.drawText(5 , 15, say);
// desaturated image
it = time.elapsed();
image = KImageEffect::desaturate(image, desat_value);
p.drawImage(image.width(), 0, image);
ft = time.elapsed();
say.setNum( ft - it); say += " ms, Horizontal";
p.drawText(15+image.width() , 15, say);
}
int main(int argc, char **argv)
{
KApplication *app = new KApplication(argc, argv, "KDesatTest");
KDesatWidget w;
app->setMainWidget(&w);
w.show();
return(app->exec());
}
#include "kdesattest.moc"
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