/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights.  These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef PATHDEFORM_H
#define PATHDEFORM_H

#include "arthurwidgets.h"

#include <QPainterPath>
#include <QBasicTimer>
#include <QDateTime>

class PathDeformRenderer : public ArthurFrame
{
    Q_OBJECT
    Q_PROPERTY(bool animated READ animated WRITE setAnimated)
    Q_PROPERTY(int radius READ radius WRITE setRadius)
    Q_PROPERTY(int fontSize READ fontSize WRITE setFontSize)
    Q_PROPERTY(int intensity READ intensity WRITE setIntensity)
    Q_PROPERTY(QString text READ text WRITE setText)

public:
    PathDeformRenderer(QWidget *widget, bool smallScreen = false);

    void paint(QPainter *painter);

    void mousePressEvent(QMouseEvent *e);
    void mouseReleaseEvent(QMouseEvent *e);
    void mouseMoveEvent(QMouseEvent *e);
    void timerEvent(QTimerEvent *e);

    QSize sizeHint() const { return QSize(600, 500); }

    bool animated() const { return m_animated; }
    int radius() const { return int(m_radius); }
    int fontSize() const { return m_fontSize; }
    int intensity() const { return int(m_intensity); }
    QString text() const { return m_text; }

public slots:
    void setRadius(int radius);
    void setFontSize(int fontSize) { m_fontSize = fontSize; setText(m_text); }
    void setText(const QString &text);
    void setIntensity(int intensity);

    void setAnimated(bool animated);

signals:
    void clicked();
//     void frameRate(double fps);

private:
    void generateLensPixmap();
    QPainterPath lensDeform(const QPainterPath &source, const QPointF &offset);

    QBasicTimer m_repaintTimer;
//     QBasicTimer m_fpsTimer;
//     int m_fpsCounter;
    QTime m_repaintTracker;

    QVector<QPainterPath> m_paths;
    QVector<QPointF> m_advances;
    QRectF m_pathBounds;
    QString m_text;

    QPixmap m_lens_pixmap;
    QImage m_lens_image;

    int m_fontSize;
    bool m_animated;

    qreal m_intensity;
    qreal m_radius;
    QPointF m_pos;
    QPointF m_offset;
    QPointF m_direction;
    QPointF m_mousePress;
    bool    m_mouseDrag;
    bool    m_smallScreen;
};

class PathDeformControls : public QWidget
{
    Q_OBJECT
public:
    PathDeformControls(QWidget *parent, PathDeformRenderer* renderer, bool smallScreen);
signals:
    void okPressed();
    void quitPressed();
private:
    PathDeformRenderer* m_renderer;
    void layoutForDesktop();
    void layoutForSmallScreen();
private slots:
    void emitQuitSignal();
    void emitOkSignal();
};

class PathDeformWidget : public QWidget
{
    Q_OBJECT
public:
    PathDeformWidget(QWidget *parent, bool smallScreen);
    void setStyle ( QStyle * style );

private:
    PathDeformRenderer *m_renderer;
    PathDeformControls *m_controls;

private slots:
    void showControls();
    void hideControls();
};

#endif // PATHDEFORM_H
