Custom QTabWidget loses capability to re-adjust size

[anda_skoa]

Ah, yes, thanks, that makes it a lot more clear.

I suspect that the problem is setting fixed/maximum sizes, probably with too small values.

However, I think the whole problem can be avoided by not attempting to shrink QTabWidget, but by using QTabBar and a separated QStackedWidget, combined with a suitable layout, maybe wrapped inside a custom widget.

That way collapsing can be implemented by hiding the stacked widget, expanding should be as simple as showing it again.

Roughly something like

class ExpandTabBar : public QWidget
{
// add the API you would need from QTabWidget
// delegate to m_tabBar and m_stackedWidget as neccessary
 
private:
    QTabBar *m_tabBar;
    QStackedWidget *m_stackedWidget;
};
 
void ExpandTabBar::setCollapsed(bool collapsed)
{
    m_stackedWidget->setVisible(!collapsed);
}

class ExpandTabBar : public QWidget
{
// add the API you would need from QTabWidget
// delegate to m_tabBar and m_stackedWidget as neccessary

private:
    QTabBar *m_tabBar;
    QStackedWidget *m_stackedWidget;
};

void ExpandTabBar::setCollapsed(bool collapsed)
{
    m_stackedWidget->setVisible(!collapsed);
}

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Cheers,
_

[remizero]

Hi everyone again.

After researching a lot, and consider and make several tests with the suggestion anda_skoa, I have managed to solve the problem of adjustment that I then had to "crash" area QTabWidget pages.

The answer is somewhat simple and though the programming is inelegant, here is the left in a compressed, if someone has the same problem or something similar.

The solution enables:
1-. "Collapse" the page area of ​​a QTabWidget the minimum level to allow display of the tabs.
2-. "Uncollapse" the page area of ​​restoring the pre QTabWidget "collapse" of the same dimensions.
3-. Resize the tab area via QSplitter.
4-. "Collapse" the page area of ​​a QTabWidget via QSplitter the minimum level to allow display of the tabs.
5-. Even not allow "Uncollapse" via QSplitter.

P.S.1 Something that was me all this research is that when you want to work with changing the size and / or dimensions of a widget, only work with setGeometry, instead of assigning and / or directly modify the values ​​of size, fixedSize and similar, blocking widget functionality as QSplitter convenience to make adjustments when required. Please correct me if I'm wrong.
****
P.S.2 Another interesting thing also I discovered in this search is that it would be much better achieve do this in combination QDockWidget and QStackedWidget, but I failed as assign a custom QTabBar to achieve better handling of the widget to insert and to move them to any DockArea convenience.

Thank you for all anda_skoa.