Vertical label on table horizontal header

[ipkiss]

Hi,

I am trying to have the text on a horizontal header displayed vertically (i.e. rotated 90°).
I tried the implementation given here, but there are several issues. Here they are, ordered by increasing gravity:

1. The vertical header is modified, not the horizontal one. This bug is easy to fix, we just need to replace line 12 with:
   

   if (!hv || hv->orientation() != Qt::Horizontal)

   if (!hv || hv->orientation() != Qt::Horizontal)

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2. Even though I tried applying my new style only to a particular table (myTable->setStyle(myProxyStyle)), all the tables in the application are modified. How can I avoid that?
   
   
3. Last but not least, the height of the horizontal header is not adjusted to take into account the size of the label. As a result, the text is truncated (and thus mostly useless). I tried two approaches to solve this problem:
   
   • override QProxyStyle::sizeForContents(). I expected that it would be called for ContentsType CT_HeaderSection, but unfortunately it is not (it is however called for each view item, which doesn't help).
   • override QProxyStyle::subControlRect(). I hoped that it would be called for SubControl SE_HeaderLabel, but it is not.
   
   Does anyone have a suggestion about how to solve this problem?

Note: I'm using Qt 4.8.