Qt 4.6: embeddeddialog.cpp Example File (demos/embeddeddialogs/embeddeddialog.cpp)

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# embeddeddialog.cpp Example File
demos/embeddeddialogs/embeddeddialog.cpp

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     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the demonstration applications of the Qt Toolkit.
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     #include "embeddeddialog.h"
     #include "ui_embeddeddialog.h"

     #include <QtGui>

     EmbeddedDialog::EmbeddedDialog(QWidget *parent)
         : QDialog(parent)
     {
         ui = new Ui_embeddedDialog;
         ui->setupUi(this);
         ui->layoutDirection->setCurrentIndex(layoutDirection() != Qt::LeftToRight);

         foreach (QString styleName, QStyleFactory::keys()) {
             ui->style->addItem(styleName);
             if (style()->objectName().toLower() == styleName.toLower())
                 ui->style->setCurrentIndex(ui->style->count() - 1);
         }

         connect(ui->layoutDirection, SIGNAL(activated(int)),
                 this, SLOT(layoutDirectionChanged(int)));
         connect(ui->spacing, SIGNAL(valueChanged(int)),
                 this, SLOT(spacingChanged(int)));
         connect(ui->fontComboBox, SIGNAL(currentFontChanged(const QFont &)),
                 this, SLOT(fontChanged(const QFont &)));
         connect(ui->style, SIGNAL(activated(QString)),
                 this, SLOT(styleChanged(QString)));
     }

     EmbeddedDialog::~EmbeddedDialog()
     {
         delete ui;
     }

     void EmbeddedDialog::layoutDirectionChanged(int index)
     {
         setLayoutDirection(index == 0 ? Qt::LeftToRight : Qt::RightToLeft);
     }

     void EmbeddedDialog::spacingChanged(int spacing)
     {
         layout()->setSpacing(spacing);
         adjustSize();
     }

     void EmbeddedDialog::fontChanged(const QFont &font)
     {
         setFont(font);
     }

     static void setStyleHelper(QWidget *widget, QStyle *style)
     {
         widget->setStyle(style);
         widget->setPalette(style->standardPalette());
         foreach (QObject *child, widget->children()) {
             if (QWidget *childWidget = qobject_cast<QWidget *>(child))
                 setStyleHelper(childWidget, style);
         }
     }

     void EmbeddedDialog::styleChanged(const QString &styleName)
     {
         QStyle *style = QStyleFactory::create(styleName);
         if (style)
             setStyleHelper(this, style);
     }