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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef MANDELBROTWIDGET_H
#define MANDELBROTWIDGET_H
#include "renderthread.h"
#include <QCoreApplication>
#include <QPixmap>
#include <QWidget>
QT_BEGIN_NAMESPACE
class QGestureEvent;
QT_END_NAMESPACE
//! [0]
class MandelbrotWidget : public QWidget
{
Q_DECLARE_TR_FUNCTIONS(MandelbrotWidget)
public:
MandelbrotWidget(QWidget *parent = nullptr);
protected:
QSize sizeHint() const override { return {1024, 768}; };
void paintEvent(QPaintEvent *event) override;
void resizeEvent(QResizeEvent *event) override;
void keyPressEvent(QKeyEvent *event) override;
#if QT_CONFIG(wheelevent)
void wheelEvent(QWheelEvent *event) override;
#endif
void mousePressEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
#ifndef QT_NO_GESTURES
bool event(QEvent *event) override;
#endif
private:
void updatePixmap(const QImage &image, double scaleFactor);
void zoom(double zoomFactor);
void scroll(int deltaX, int deltaY);
#ifndef QT_NO_GESTURES
bool gestureEvent(QGestureEvent *event);
#endif
RenderThread thread;
QPixmap pixmap;
QPoint pixmapOffset;
QPoint lastDragPos;
QString help;
QString info;
double centerX;
double centerY;
double pixmapScale;
double curScale;
};
//! [0]
#endif // MANDELBROTWIDGET_H
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