/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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
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** information use the contact form at https://www.qt.io/contact-us.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
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****************************************************************************/

#pragma once

#include <QGraphicsView>
#include <QPointer>

#include "ui_magnifier.h"

QT_FORWARD_DECLARE_CLASS(QMouseEvent)

namespace ScxmlEditor {

namespace PluginInterface { class GraphicsScene; }

namespace Common {

class GraphicsView;

class Magnifier : public QWidget
{
    Q_OBJECT

public:
    Magnifier(QWidget *parent = nullptr);

    void setCurrentView(GraphicsView *mainView);
    void setCurrentScene(PluginInterface::GraphicsScene *scene);
    void setTopLeft(const QPoint &topLeft);

    bool eventFilter(QObject *obj, QEvent *event) override;

signals:
    void clicked(double zoomLevel);
    void visibilityChanged(bool hidden);

protected:
    void resizeEvent(QResizeEvent *e) override;
    void paintEvent(QPaintEvent *e) override;
    void showEvent(QShowEvent *e) override;
    void hideEvent(QHideEvent *e) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void moveEvent(QMoveEvent *e) override;
    void wheelEvent(QWheelEvent *e) override;

private:
    QPoint m_topLeft;
    QPointer<GraphicsView> m_mainView;
    QRadialGradient m_gradientBrush;
    Ui::Magnifier m_ui;
};

} // namespace Common
} // namespace ScxmlEditor
