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

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# myinputpanelcontext.cpp Example File
tools/inputpanel/myinputpanelcontext.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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     #include <QtCore>

     #include "myinputpanelcontext.h"

     MyInputPanelContext::MyInputPanelContext()
     {
         inputPanel = new MyInputPanel;
         connect(inputPanel, SIGNAL(characterGenerated(QChar)), SLOT(sendCharacter(QChar)));
     }

     MyInputPanelContext::~MyInputPanelContext()
     {
         delete inputPanel;
     }

     bool MyInputPanelContext::filterEvent(const QEvent* event)
     {
         if (event->type() == QEvent::RequestSoftwareInputPanel) {
             updatePosition();
             inputPanel->show();
             return true;
         } else if (event->type() == QEvent::CloseSoftwareInputPanel) {
             inputPanel->hide();
             return true;
         }
         return false;
     }

     QString MyInputPanelContext::identifierName()
     {
         return "MyInputPanelContext";
     }

     void MyInputPanelContext::reset()
     {
     }

     bool MyInputPanelContext::isComposing() const
     {
         return false;
     }

     QString MyInputPanelContext::language()
     {
         return "en_US";
     }

     void MyInputPanelContext::sendCharacter(QChar character)
     {
         QPointer<QWidget> w = focusWidget();

         if (!w)
             return;

         QKeyEvent keyPress(QEvent::KeyPress, character.unicode(), Qt::NoModifier, QString(character));
         QApplication::sendEvent(w, &keyPress);

         if (!w)
             return;

         QKeyEvent keyRelease(QEvent::KeyPress, character.unicode(), Qt::NoModifier, QString());
         QApplication::sendEvent(w, &keyRelease);
     }

     void MyInputPanelContext::updatePosition()
     {
         QWidget *widget = focusWidget();
         if (!widget)
             return;

         QRect widgetRect = widget->rect();
         QPoint panelPos = QPoint(widgetRect.left(), widgetRect.bottom() + 2);
         panelPos = widget->mapToGlobal(panelPos);
         inputPanel->move(panelPos);
     }