- Qt 5.5
- Qt Widgets
- Embedded Dialogs
- embeddeddialog.cpp Example File
- Qt 5.5.1 Reference Documentation

# embeddeddialog.cpp Example File

graphicsview/embeddeddialogs/embeddeddialog.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the demonstration applications of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** Commercial License Usage
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    ** Alternatively, this file may be used under the terms of the GNU Lesser
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    #include "embeddeddialog.h"
    #include "ui_embeddeddialog.h"

    #include <QStyleFactory>

    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(QFont)),
                this, SLOT(fontChanged(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);
    }