Vertical QProgressBar Text Direction

[wysota]

Just consider the situation that sometimes you may need to draw the text twice with clipping -- when the value of the progress bar is such that the bar ends intersecting the text. Then you need to draw part of the text with inverted (or otherwise changed) colours, just like the default bar does.

[martynets]

I'm faced with the problem described in the initial question: call setTextDirection(QProgressBar::BottomToTop) makes no visual difference on the progress bar. The code is:

QProgressBar* pb2=new QProgressBar;
 
 pb2->setOrientation(Qt::Vertical);
 pb2->setTextDirection(QProgressBar::BottomToTop);
 pb2->setRange(0, 100);
 pb2->setValue(20);
 
 current_layout->insertWidget(current_index++,pb2);

QProgressBar* pb2=new QProgressBar;

 pb2->setOrientation(Qt::Vertical);
 pb2->setTextDirection(QProgressBar::BottomToTop);
 pb2->setRange(0, 100);
 pb2->setValue(20);

 current_layout->insertWidget(current_index++,pb2);

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The text on the resulting progress bar is stil oriented top-to-bottom...
progressbar.png
Question is how to get the text oriented bottom-to-top?

Thank you in advance!

UPDATE:
This issue is caused by GTK+ style. The documentation says that some styles do not draw the text. This style seems to ignore the text direction option. From what I was able to test:
- Motif, CDE and Plastique styles draw the text correctly;
- Windows and Cleanlooks do not draw the text at all;
- GTK+ is buggy - draws the text but ignores the text direction option.

Hope this is helpful...

[d_stranz]

So does this part of the QProgressBar::setTextDirection() documentation apply to you?

Note that whether or not the text is drawn is dependent on the style. Currently CleanLooks and Plastique draw the text. Mac, Windows and WindowsXP style do not.

[martynets]

Hi, thanks. Right, the root cause is in the style. I've just updated my question. Problem is with GTK+ style which is the default for my environment. Actually I use Qt 4.8 which set of styles differs from the Qt 5 but it doesn't matter...
Thank you. Regards.