examples/painting/transformations/renderarea.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:19:32 +0300
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/****************************************************************************
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**
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** Copyright (C) 2010 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 examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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**   * Redistributions of source code must retain the above copyright
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**     notice, this list of conditions and the following disclaimer.
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**   * Redistributions in binary form must reproduce the above copyright
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**     notice, this list of conditions and the following disclaimer in
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**     the documentation and/or other materials provided with the
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**     distribution.
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**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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**     the names of its contributors may be used to endorse or promote
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**     products derived from this software without specific prior written
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**     permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef RENDERAREA_H
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#define RENDERAREA_H
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#include <QFont>
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#include <QList>
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#include <QPainterPath>
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#include <QRect>
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#include <QWidget>
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QT_BEGIN_NAMESPACE
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class QPaintEvent;
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QT_END_NAMESPACE
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//! [0]
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enum Operation { NoTransformation, Translate, Rotate, Scale };
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//! [0]
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//! [1]
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class RenderArea : public QWidget
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{
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    Q_OBJECT
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public:
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    RenderArea(QWidget *parent = 0);
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    void setOperations(const QList<Operation> &operations);
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    void setShape(const QPainterPath &shape);
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    QSize minimumSizeHint() const;
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    QSize sizeHint() const;
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protected:
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    void paintEvent(QPaintEvent *event);
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//! [1]
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//! [2]
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private:
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    void drawCoordinates(QPainter &painter);
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    void drawOutline(QPainter &painter);
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    void drawShape(QPainter &painter);
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    void transformPainter(QPainter &painter);
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    QList<Operation> operations;
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    QPainterPath shape;
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    QRect xBoundingRect;
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    QRect yBoundingRect;
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};
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//! [2]
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#endif