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# imagecomposer.h Example File
painting/imagecomposition/imagecomposer.h

        /****************************************************************************
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        ** 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.
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        ** not clear to you.
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        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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        #ifndef IMAGECOMPOSER_H
        #define IMAGECOMPOSER_H

        #include <QPainter>
        #include <QWidget>

        class QComboBox;
        class QLabel;
        class QToolButton;

        class ImageComposer : public QWidget
        {
            Q_OBJECT

        public:
            ImageComposer();

        private slots:
            void chooseSource();
            void chooseDestination();
            void recalculateResult();

        private:
            void addOp(QPainter::CompositionMode mode, const QString &name);
            void chooseImage(const QString &title, QImage *image, QToolButton *button);
            void loadImage(const QString &fileName, QImage *image, QToolButton *button);
            QPainter::CompositionMode currentMode() const;
            QPoint imagePos(const QImage &image) const;

            QToolButton *sourceButton;
            QToolButton *destinationButton;
            QComboBox *operatorComboBox;
            QLabel *equalLabel;
            QLabel *resultLabel;

            QImage sourceImage;
            QImage destinationImage;
            QImage resultImage;
        };

        #endif