qt5base-lts/examples/painting/affine/xform.h

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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 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 the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef XFORM_H
#define XFORM_H
#include "arthurwidgets.h"
#include <QBasicTimer>
#include <QPolygonF>
class HoverPoints;
QT_FORWARD_DECLARE_CLASS(QLineEdit)
class XFormView : public ArthurFrame
{
public:
Q_OBJECT
Q_PROPERTY(XFormType type READ type WRITE setType)
Q_PROPERTY(bool animation READ animation WRITE setAnimation)
Q_PROPERTY(qreal shear READ shear WRITE setShear)
Q_PROPERTY(qreal rotation READ rotation WRITE setRotation)
Q_PROPERTY(qreal scale READ scale WRITE setScale)
Q_PROPERTY(QString text READ text WRITE setText)
Q_PROPERTY(QPixmap pixmap READ pixmap WRITE setPixmap)
Q_ENUMS(XFormType)
public:
enum XFormType { VectorType, PixmapType, TextType };
XFormView(QWidget *parent);
void paint(QPainter *);
void drawVectorType(QPainter *painter);
void drawPixmapType(QPainter *painter);
void drawTextType(QPainter *painter);
QSize sizeHint() const { return QSize(500, 500); }
void mousePressEvent(QMouseEvent *e);
void resizeEvent(QResizeEvent *e);
HoverPoints *hoverPoints() { return pts; }
bool animation() const { return timer.isActive(); }
qreal shear() const { return m_shear; }
qreal scale() const { return m_scale; }
qreal rotation() const { return m_rotation; }
void setShear(qreal s);
void setScale(qreal s);
void setRotation(qreal r);
XFormType type() const;
QPixmap pixmap() const;
QString text() const;
public slots:
void setAnimation(bool animate);
void updateCtrlPoints(const QPolygonF &);
void changeRotation(int rotation);
void changeScale(int scale);
void changeShear(int shear);
void setText(const QString &);
void setPixmap(const QPixmap &);
void setType(XFormType t);
void setVectorType();
void setPixmapType();
void setTextType();
void reset();
signals:
void rotationChanged(int rotation);
void scaleChanged(int scale);
void shearChanged(int shear);
protected:
void timerEvent(QTimerEvent *e);
void wheelEvent(QWheelEvent *);
private:
QPolygonF ctrlPoints;
HoverPoints *pts;
qreal m_rotation;
qreal m_scale;
qreal m_shear;
XFormType m_type;
QPixmap m_pixmap;
QString m_text;
QBasicTimer timer;
};
class XFormWidget : public QWidget
{
Q_OBJECT
public:
XFormWidget(QWidget *parent);
private:
XFormView *view;
QLineEdit *textEditor;
};
#endif // XFORM_H