stretch = 0 has no effect in the WBoxLayout::addWidget() method
As stated in this document:
when stretch = 0, the widget size is not changed by the layout manager, but in reality this is not the case and the flex property value of the added widget is equal to 1 1 auto when it should be equal to 0 0 auto.
Replies (1)
RE: stretch = 0 has no effect in the WBoxLayout::addWidget() method - Added by Matthias Van Ceulebroeck about 24 hours ago
Hello Ali,
I do believe that this renders out correctly?
E.g. (taken from your flex example code)
auto topBox = root()->addNew<Wt::WContainerWidget>();
auto topLayout = topBox->setLayout<Wt::WVBoxLayout>(std::make_unique<Wt::WVBoxLayout>());
// widget should have "flex: 0 0 auto"
topLayout->addWidget(std::make_unique<Wt::WContainerWidget>(), 0, Wt::AlignmentFlag::Top);
Which renders out to:
<!-- ROOT -->
<div id="o4" style="height:100.0%;">
<!-- topBox -->
<div id="ot" style="padding:9px 9px 9px 9px;display:flex;flex-flow:column;-moz-flex-flow:column;">
<!-- topLayout -->
<div id="wow" flg="0" style="display: flex; flex: 1 1 auto; flex-flow: column; justify-content: flex-start; overflow: hidden;">
<!-- widget with "flex: 0 0 auto" -->
<div id="ow" style="flex:0 0 auto;-moz-flex:0 0 auto;">
</div>
</div>
</div>
</div>
that seems to be right to me.
If you have a counterexample, please let me know!
Best,
Matthias