Hi,
I get an exception in the attached testcase (the code is from KDE's
Oxygen style). This is on Linux.
Cheers,
André
--
Dipl.-Math. André Wöbbeking
Ingenieurgesellschaft für Verkehrs- und Eisenbahnwesen mbH
Consulting Company for Traffic and Railway Engineering Ltd.
Vahrenwalder Platz 3
30165 Hannover
Germany
phone: +49 511 984228 - 10
fax: +49 511 984228 - 29
web: www.ivembh.de
email: [email protected]
Rechtsform: Gesellschaft mit beschränkter Haftung
Sitz des Unternehmens: Hannover
Amtsgericht Hannover, HRB 56965
Geschäftsführer:
Prof. Dr.-Ing. Thomas Siefer
PD Dr.-Ing. Alfons Radtke
#include <QtGui>
#include <cfloat>
#if defined Q_OS_WIN32
void fp_setup()
{
// Activate all FPU-Exceptions
unsigned int uiStateFPU = 0;
__control87_2(0, _EM_INVALID | _EM_DENORMAL | _EM_ZERODIVIDE | _EM_OVERFLOW | _EM_UNDERFLOW, &uiStateFPU, 0);
// Activate all SSE-Exceptions
unsigned int uiStateSSE = 0;
__control87_2(0, _EM_INVALID | _EM_DENORMAL | _EM_ZERODIVIDE | _EM_OVERFLOW | _EM_UNDERFLOW, 0, &uiStateSSE);
_clearfp();
}
#else
#include <fenv.h>
void fp_setup()
{
int iActiveExceptions = FE_DIVBYZERO | FE_OVERFLOW | FE_INVALID;
feclearexcept(FE_ALL_EXCEPT);
feenableexcept(iActiveExceptions);
}
#endif
QColor alphaColor(QColor color, double alpha)
{
if (alpha >= 1.0)
return color;
color.setAlphaF(qMax(0.0, alpha) * color.alphaF());
return color;
}
int main(int argc, char *argv[])
{
fp_setup();
QApplication app(argc, argv);
const int size(21), rsize(21);
const QColor color(Qt::blue);
QPixmap pixmap(rsize, rsize);
pixmap.fill(QColor(0,0,0,0));
QPainter p(&pixmap);
p.setRenderHints(QPainter::Antialiasing);
p.setPen(Qt::NoPen);
p.setWindow(0,0,size,size);
QRectF r(0, 0, size, size);
double m = double(size)*0.5;
const double width = 3.0;
const double bias = 0.9 * double(size) / double(rsize);
double k0 = (m-width+bias) / m;
QRadialGradient glowGradient(m, m, m);
for (int i = 0; i < 8; i++) {
double k1 = (k0 * double(8 - i) + double(i)) * 0.125;
double a = 1.0 - sqrt(i * 0.125);
glowGradient.setColorAt(k1, alphaColor(color, a));
}
glowGradient.setColorAt(1.0, alphaColor(color, 0.0));
p.setBrush(glowGradient);
p.drawEllipse(r);
return app.exec();
}
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