myinputpanel.cpp Example File
tools/inputpanel/myinputpanel.cpp

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 #include "myinputpanel.h"


 MyInputPanel::MyInputPanel()
     : QWidget(0, Qt::Tool | Qt::WindowStaysOnTopHint),
       lastFocusedWidget(0)
 {
     form.setupUi(this);

     connect(qApp, SIGNAL(focusChanged(QWidget*,QWidget*)),
             this, SLOT(saveFocusWidget(QWidget*,QWidget*)));

     signalMapper.setMapping(form.panelButton_1, form.panelButton_1);
     signalMapper.setMapping(form.panelButton_2, form.panelButton_2);
     signalMapper.setMapping(form.panelButton_3, form.panelButton_3);
     signalMapper.setMapping(form.panelButton_4, form.panelButton_4);
     signalMapper.setMapping(form.panelButton_5, form.panelButton_5);
     signalMapper.setMapping(form.panelButton_6, form.panelButton_6);
     signalMapper.setMapping(form.panelButton_7, form.panelButton_7);
     signalMapper.setMapping(form.panelButton_8, form.panelButton_8);
     signalMapper.setMapping(form.panelButton_9, form.panelButton_9);
     signalMapper.setMapping(form.panelButton_star, form.panelButton_star);
     signalMapper.setMapping(form.panelButton_0, form.panelButton_0);
     signalMapper.setMapping(form.panelButton_hash, form.panelButton_hash);

     connect(form.panelButton_1, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_2, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_3, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_4, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_5, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_6, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_7, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_8, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_9, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_star, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_0, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));
     connect(form.panelButton_hash, SIGNAL(clicked()),
             &signalMapper, SLOT(map()));

     connect(&signalMapper, SIGNAL(mapped(QWidget*)),
             this, SLOT(buttonClicked(QWidget*)));
 }


 bool MyInputPanel::event(QEvent *e)
 {
     switch (e->type()) {
     case QEvent::WindowActivate:
         if (lastFocusedWidget)
             lastFocusedWidget->activateWindow();
         break;
     default:
         break;
     }

     return QWidget::event(e);
 }


 void MyInputPanel::saveFocusWidget(QWidget * /*oldFocus*/, QWidget *newFocus)
 {
     if (newFocus != 0 && !this->isAncestorOf(newFocus)) {
         lastFocusedWidget = newFocus;
     }
 }



 void MyInputPanel::buttonClicked(QWidget *w)
 {
     QChar chr = qvariant_cast<QChar>(w->property("buttonValue"));
     emit characterGenerated(chr);
 }