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/*
* copyright (c) 2004 Michael Thaler <michael.thaler@physik.tu-muenchen.de>
*
* this program is free software; you can redistribute it and/or modify
* it under the terms of the gnu general public license as published by
* the free software foundation; either version 2 of the license, or
* (at your option) any later version.
*
* this program is distributed in the hope that it will be useful,
* but without any warranty; without even the implied warranty of
* merchantability or fitness for a particular purpose. see the
* gnu general public license for more details.
*
* you should have received a copy of the gnu general public license
* along with this program; if not, write to the free software
* foundation, inc., 675 mass ave, cambridge, ma 02139, usa.
*/
#ifndef KIS_ROTATE_VISITOR_H_
#define KIS_ROTATE_VISITOR_H_
#include "kis_types.h"
#include "kis_progress_subject.h"
class TQRect;
class KisPaintDevice;
class KisProgressDisplayInterface;
class KisRotateVisitor : public KisProgressSubject {
typedef KisProgressSubject super;
/* Structs for the image rescaling routine */
public:
KisRotateVisitor();
~KisRotateVisitor();
void visitKisPaintDevice(KisPaintDevice* dev);
void rotate(double angle, bool rotateAboutImageCentre, KisProgressDisplayInterface *progress);
void shear(double angleX, double angleY, KisProgressDisplayInterface *progress);
private:
KisPaintDeviceSP m_dev;
// Implement KisProgressSubject
bool m_cancelRequested;
virtual void cancel() { m_cancelRequested = true; }
void initProgress(TQ_INT32 totalSteps);
void incrementProgress();
void setProgressDone();
KisProgressDisplayInterface *m_progress;
TQ_INT32 m_progressStep;
TQ_INT32 m_progressTotalSteps;
TQ_INT32 m_lastProgressPerCent;
KisPaintDeviceSP rotateRight90(KisPaintDeviceSP src);
KisPaintDeviceSP rotateLeft90(KisPaintDeviceSP src);
KisPaintDeviceSP rotate180(KisPaintDeviceSP src);
KisPaintDeviceSP rotate(KisPaintDeviceSP src, double angle, KisPoint centreOfRotation);
KisPaintDeviceSP xShear(KisPaintDeviceSP src, double shearX);
KisPaintDeviceSP yShear(KisPaintDeviceSP src, double shearY);
};
inline KisRotateVisitor::KisRotateVisitor()
{
}
inline KisRotateVisitor::~KisRotateVisitor()
{
}
inline void KisRotateVisitor::visitKisPaintDevice(KisPaintDevice* dev)
{
m_dev = dev;
}
#endif // KIS_ROTATE_VISITOR_H_
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