Qt-interest Archive, July 2004
Mac OSX text Problems
Message 1 in thread
Hello Everybody
I have some problems with rendering Text in Mac OSX Jaguar. I have
compiled it with xcodebuild with macx-pbuilder makespec, using qt 3.3.2.
NOTE: The program works fine under RedHat and WinXP.
1. OpenGL Widget:
renderText () does not render any text, whereas rest of the OpenGL
parts are drawn correctly.
For example, a code like this renders nothing
QString m_name = "teststr";
renderText(- 0.5, 0.1,0.0,m_name.latin1());
None of the OpenGL renderText works.
2. QPixmap renders as a blackbox:
Im trying to put a vertical QLabel. But does not work. It is rendered as
a Black Box.
QPixmap getRotatedText(QString str)
{
QPainter p;
QRect r; /* rectangle covering new text/pixmap in virtual
coordinates */
QWMatrix um;
QFontMetrics fm(fontMetrics());
r = fm.boundingRect(str);
/* rectangle covering text */
// QRect rr(r.top(), r.left(), r.height(), r.width());
QRect rr(r.top()+3, r.left()+3, r.height()+3, r.width()+3);
int textYPos; /* distance from boundingRect y pos to baseline */
int textXPos; /* distance from boundingRect x pos to text start */
textYPos = -rr.y();
textXPos = -rr.x();
int x = rr.width();
int y = rr.height();
rr.moveTopLeft(QPoint(-rr.width() / 2, -rr.height() / 2));
int rb = rr.bottom();
int rt = rr.top();
int rl = rr.left();
int _rr = rr.right();
QPixmap pm(x, y); /* off-screen drawing pixmap */
pm.fill(SPtable->horizontalHeader()->paletteBackgroundColor());
p.begin(&pm);
um.translate(x / 2, y / 2); /* 0,0 is center */
um.rotate(-90);
p.setFont(font()); /* use widget font */
p.setWorldMatrix(um);
p.drawText(-y / 2, x / 2 - 1, str);
p.end();
return pm;
}
Can anyone tell me how to solve it ?
cheers
Sathya
