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# previewdialog.h Example File
painting/fontsampler/previewdialog.h

    /****************************************************************************
    **
    ** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** Licensees holding valid Qt Preview licenses may use this file in
    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    #ifndef PREVIEWDIALOG_H
    #define PREVIEWDIALOG_H

    #include <QDialog>
    #include <QPrinter>
    #include <QList>
    #include <QStringList>
    #include "ui_previewdialogbase.h"
    #include "previewlabel.h"

    class QTreeWidgetItem;

    typedef QList<QTreeWidgetItem *> StyleItems;

    Q_DECLARE_METATYPE(StyleItems);

    class PreviewDialog : public QDialog, private Ui::PreviewDialogBase
    {
        Q_OBJECT

    public:
        PreviewDialog(QPrinter &printer, QWidget *parent);
        enum { SmallPreviewLength = 200, LargePreviewLength = 400 };

        bool isSelected(int index);

    signals:
        void pageRequested(int index, QPainter &painter, QPrinter &printer);

    protected:
        void resizeEvent(QResizeEvent *);

    public slots:
        void accept();
        void addPage();
        void on_pageList_currentItemChanged();
        void on_paperSizeCombo_activated(int index);
        void on_paperOrientationCombo_activated(int index);
        void reject();
        void setNumberOfPages(int count);

    private:
        void paintItem(QTreeWidgetItem *item, int index);
        void paintPreview(QPixmap &pixmap, int index);
        void setupComboBoxes();

        PreviewLabel *previewLabel;
        QPrinter &printer;
        bool canceled;
        int currentPage;
        int pageCount;
    };

    #endif