90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** You may use this file under the terms of the BSD license as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
|
|
** of its contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifndef RENDERAREA_H
|
|
#define RENDERAREA_H
|
|
|
|
#include <QList>
|
|
#include <QPainterPath>
|
|
#include <QRect>
|
|
#include <QWidget>
|
|
|
|
QT_BEGIN_NAMESPACE
|
|
class QPaintEvent;
|
|
QT_END_NAMESPACE
|
|
|
|
//! [0]
|
|
enum Operation { NoTransformation, Translate, Rotate, Scale };
|
|
//! [0]
|
|
|
|
//! [1]
|
|
class RenderArea : public QWidget
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
RenderArea(QWidget *parent = 0);
|
|
|
|
void setOperations(const QList<Operation> &operations);
|
|
void setShape(const QPainterPath &shape);
|
|
|
|
QSize minimumSizeHint() const;
|
|
QSize sizeHint() const;
|
|
|
|
protected:
|
|
void paintEvent(QPaintEvent *event);
|
|
//! [1]
|
|
|
|
//! [2]
|
|
private:
|
|
void drawCoordinates(QPainter &painter);
|
|
void drawOutline(QPainter &painter);
|
|
void drawShape(QPainter &painter);
|
|
void transformPainter(QPainter &painter);
|
|
|
|
QList<Operation> operations;
|
|
QPainterPath shape;
|
|
QRect xBoundingRect;
|
|
QRect yBoundingRect;
|
|
};
|
|
//! [2]
|
|
|
|
#endif // RENDERAREA_H
|