Hey Richard,
2009/7/1 Richard Ulrich <[email protected]>:
> After updating my git working copy (after a while), content that is
> larger than the screen is no longer scrollable.
> Do I have to set some new property to get that back?
> I searched the online documentation and the mailing list, but didn't
> find what I was looking for.
I am not sure what changes may have affected this, but, really, in
general things have improved... (read on!).
> Here is a stripped down example to demonstrate the problem:
>
> /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8/////////9/////////A
> class Testapp_Scroll : public Wt::WApplication
> {
> public:
> Testapp_Scroll(const Wt::WEnvironment& env) : Wt::WApplication(env)
> {
> Wt::WBorderLayout *blayout = new Wt::WBorderLayout();
> root()->setLayout(blayout);
>
> Wt::WTabWidget *tabw = new Wt::WTabWidget();
> blayout->addWidget(tabw, Wt::WBorderLayout::Center);
>
> Wt::WContainerWidget *tab1 = new Wt::WContainerWidget();
> tabw->addTab(tab1, "Tab1");
// here set the tab height to 100%. In this way, the layout manager will know
// how to constrain its height.
// if you are not using a layout manager, you will also want to set its overflow
// property so that scrollbars appear.
tab1->resize(Wt::WLength::Auto, Wt::WLength(100, Wt::WLength::Percentage));
> Wt::WBorderLayout *blayout1 = new Wt::WBorderLayout();
> tab1->setLayout(blayout1);
> Wt::WTable *table1 = new Wt::WTable();
// a WTable is a bit of a bad behaving widget: its vertical size
cannot be constrained,
// it will always grow to whatever size it needs to be. Therefore,
wrap it in in a container:
Wt::WContainerWidget *w = new Wt::WContainerWidget();
w->setOverflow(Wt::WContainerWidget::OverflowAuto);
w->addWidget(table1)
- blayout1->addWidget(table1, Wt::WBorderLayout::Center);
+ blayout1->addWidget(w, Wt::WBorderLayout::Center);
> for(int i=0; i<200; ++i)
> {
> Wt::WText *txt = new
> Wt::WText(boost::lexical_cast<std::string>(i));
> table1->elementAt(i, 0)->addWidget(txt);
> }
> }
> };
> /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8/////////9/////////A
> Wt::WApplication *createApplication(const Wt::WEnvironment& env)
> {
> Testapp_Scroll *app = new Testapp_Scroll(env);
>
> return app;
> }
> /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8/////////9/////////A
> int main(int argc, char *argv[])
> {
> return Wt::WRun(argc, argv, &createApplication);
> }
> /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8/////////9/////////A
>
With these changes, your example runs fine for me.
I am updating the documentation to point out these usage caveats of
using WTabWidget and layout-managers + WTable widgets.
Regards,
koen
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