doc/src/snippets/picture/picture.cpp
author Alex Gilkes <alex.gilkes@nokia.com>
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtGui>
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void myProcessing(const QString &)
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{
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}
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int main()
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{
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    QWidget myWidget;
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    {
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        // RECORD
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//! [0]
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        QPicture picture;
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        QPainter painter;
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        painter.begin(&picture);           // paint in picture
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        painter.drawEllipse(10,20, 80,70); // draw an ellipse
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        painter.end();                     // painting done
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        picture.save("drawing.pic");       // save picture
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//! [0]
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    }
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    {
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        // REPLAY
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//! [1]
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        QPicture picture;
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        picture.load("drawing.pic");           // load picture
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        QPainter painter;
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        painter.begin(&myImage);               // paint in myImage
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        painter.drawPicture(0, 0, picture);    // draw the picture at (0,0)
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        painter.end();                         // painting done
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//! [1]
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    }
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    QPicture myPicture;
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    {
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        // FORMATS
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//! [2]
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        QStringList list = QPicture::inputFormatList();
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        foreach (QString string, list)
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            myProcessing(string);
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//! [2]
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    }
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    {
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        // OUTPUT
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//! [3]
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        QStringList list = QPicture::outputFormatList();
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        foreach (QString string, list)
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            myProcessing(string);
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//! [3]
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    }
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    {
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        // PIC READ
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//! [4]
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        QPictureIO iio;
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        QPixmap  pixmap;
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        iio.setFileName("vegeburger.pic");
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        if (iio.read()) {        // OK
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            QPicture picture = iio.picture();
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            QPainter painter(&pixmap);
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            painter.drawPicture(0, 0, picture);
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        }
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//! [4]
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    }
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    {
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        QPixmap pixmap;
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        // PIC WRITE
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//! [5]
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        QPictureIO iio;
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        QPicture   picture;
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        QPainter painter(&picture);
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        painter.drawPixmap(0, 0, pixmap);
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        iio.setPicture(picture);
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        iio.setFileName("vegeburger.pic");
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        iio.setFormat("PIC");
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        if (iio.write())
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            return true; // returned true if written successfully
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//! [5]
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    }
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}
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// SVG READ
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//! [6]
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void readSVG(QPictureIO *picture)
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{
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    // read the picture using the picture->ioDevice()
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}
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//! [6]
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// SVG WRITE
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//! [7]
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void writeSVG(QPictureIO *picture)
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{
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    // write the picture using the picture->ioDevice()
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}
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//! [7]
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// USE SVG
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void foo() {
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//! [8]
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    // add the SVG picture handler
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    // ...
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//! [8]
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    QPictureIO::defineIOHandler("SVG", 0, 0, readSVG, writeSVG);
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    // ...
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}