renderarea.h

来自「qt-x11-opensource-src-4.1.4.tar.gz源码」· C头文件 代码 · 共 66 行

/****************************************************************************
**
** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at [e-mail].
**
** 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 RENDERAREA_H
#define RENDERAREA_H

#include <QFont>
#include <QList>
#include <QPainterPath>
#include <QRect>
#include <QWidget>

class QPaintEvent;

enum Operation { NoTransformation, Translate, Rotate, Scale };

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);

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;
};

#endif