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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef RENDERTHREAD_H
#define RENDERTHREAD_H
#include <QMutex>
#include <QSize>
#include <QThread>
#include <QWaitCondition>
QT_BEGIN_NAMESPACE
class QImage;
QT_END_NAMESPACE
//! [0]
class RenderThread : public QThread
{
Q_OBJECT
public:
RenderThread(QObject *parent = nullptr);
~RenderThread();
void render(double centerX, double centerY, double scaleFactor, QSize resultSize,
double devicePixelRatio);
static void setNumPasses(int n) { numPasses = n; }
static QString infoKey() { return QStringLiteral("info"); }
signals:
void renderedImage(const QImage &image, double scaleFactor);
protected:
void run() override;
private:
static uint rgbFromWaveLength(double wave);
QMutex mutex;
QWaitCondition condition;
double centerX;
double centerY;
double scaleFactor;
double devicePixelRatio;
QSize resultSize;
static int numPasses;
bool restart = false;
bool abort = false;
enum { ColormapSize = 512 };
uint colormap[ColormapSize];
};
//! [0]
#endif // RENDERTHREAD_H
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