Qt 4.6: myinputpanel.cpp Example File (tools/inputpanel/myinputpanel.cpp)

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

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     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the examples of the Qt Toolkit.
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     ** You may use this file in accordance with the terms and conditions
     ** contained in the Technology Preview License Agreement accompanying
     ** this package.
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     ** General Public License version 2.1 as published by the Free Software
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     ** packaging of this file.  Please review the following information to
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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);
     }