Hi,
Below is a simple application that shows a WTable. When a table item is
clicked, a popup is shown with another WTable. It is meant to be a
drop-down menu eventually.
Strangely enough, when the popup is shown, the table starts to increase
its size whenever any signal is emitted (by anyone). This only happens
in FireFox, not in IE.
The problem disappears when I put the WTable directly in the main
layout, instead of wrapping it in a WContainerWidget and a WBoxLayout.
Does anyone have any idea what is happening here? What am I missing?
I'm using Wt 2.2.4. And yes, I know that using mouseWentOut to hide a
pop-up is not going to work this way :-). This is just a condensed
example of the problem.
Regards,
Rogier
#include <Wt/WApplication>
#include <Wt/WContainerWidget>
#include <Wt/WText>
#include <Wt/WBoxLayout>
#include <Wt/WTable>
#include <Wt/WBorder>
using namespace Wt;
class ExampleApplication : public WApplication
{
public:
ExampleApplication(const WEnvironment& env);
private:
WContainerWidget* mSubMenu;
void onItemClicked();
void onMouseWentOut(const WMouseEvent& e);
};
ExampleApplication::ExampleApplication(const WEnvironment& env)
: WApplication(env)
{
WBoxLayout* lMainLayout = new WBoxLayout(WBoxLayout::TopToBottom);
lMainLayout->setSpacing(0);
root()->setLayout(lMainLayout);
WContainerWidget* lMenuContainer = new WContainerWidget(root());
lMainLayout->addWidget(lMenuContainer, 0);
WBoxLayout* lMenuLayout = new WBoxLayout(WBoxLayout::LeftToRight,
lMenuContainer);
WTable* lTable = new WTable(lMenuContainer);
lTable->decorationStyle().setBorder(WBorder(WBorder::Inset,
WBorder::Thin, WColor("black")));
lMenuLayout->addWidget(lTable, 0);
WText* lItem1 = new WText("Item 1");
lTable->elementAt(0, 0)->addWidget(lItem1);
lItem1->clicked.connect(SLOT(this,
ExampleApplication::onItemClicked));
WText* lItem2 = new WText("Item 2");
lTable->elementAt(0, 1)->addWidget(lItem2);
WText* lItem3 = new WText("Item 3");
lTable->elementAt(0, 2)->addWidget(lItem3);
lTable->columnAt(0)->setWidth(WLength(125));
lTable->columnAt(1)->setWidth(WLength(125));
lTable->columnAt(2)->setWidth(WLength(125));
lTable->rowAt(0)->setHeight(WLength(20));
mSubMenu = new WContainerWidget(lTable->elementAt(0, 1));
mSubMenu->setPositionScheme(Absolute);
mSubMenu->setPopup(true);
mSubMenu->mouseWentOut.connect(SLOT(this,
ExampleApplication::onMouseWentOut));
mSubMenu->hide();
WTable* lTable2 = new WTable(mSubMenu);
lTable2->decorationStyle().setBorder(WBorder(WBorder::Inset,
WBorder::Thin, WColor("black")));
mSubMenu->addWidget(lTable2);
lTable2->elementAt(0, 0)->addWidget(new WText("sub 1"));
lTable2->elementAt(0, 1)->addWidget(new WText("sub 2"));
lTable2->elementAt(0, 2)->addWidget(new WText("sub 3"));
lTable2->columnAt(0)->setWidth(WLength(125));
lTable2->rowAt(0)->setHeight(WLength(20));
lTable2->rowAt(1)->setHeight(WLength(20));
lTable2->rowAt(2)->setHeight(WLength(20));
lMainLayout->insertStretch(1, 1);
}
void ExampleApplication::onItemClicked()
{
mSubMenu->show();
}
void ExampleApplication::onMouseWentOut(const WMouseEvent& e)
{
if (e.widget().x < 0 || e.widget().y < 0)
{
mSubMenu->hide();
}
}
WApplication *createApplication(const WEnvironment& env)
{
return new ExampleApplication(env);
}
int main(int argc, char **argv)
{
return WRun(argc, argv, &createApplication);
}
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