okular/core/rotationjob.cpp
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/***************************************************************************
* Copyright (C) 2006 by Tobias Koenig <tokoe@kde.org> *
* *
* 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. *
***************************************************************************/
#include "rotationjob_p.h"
#include <QTransform>
using namespace Okular;
RotationJob::RotationJob(const QImage &image, Rotation oldRotation, Rotation newRotation, DocumentObserver *observer)
: ThreadWeaver::QObjectDecorator(new RotationJobInternal(image, oldRotation, newRotation))
, mObserver(observer)
, m_pd(nullptr)
, mRect(NormalizedRect())
, mIsPartialUpdate(false)
{
}
void RotationJob::setPage(PagePrivate *pd)
{
m_pd = pd;
}
void RotationJob::setRect(const NormalizedRect &rect)
{
mRect = rect;
}
void RotationJob::setIsPartialUpdate(bool partialUpdate)
{
mIsPartialUpdate = partialUpdate;
}
DocumentObserver *RotationJob::observer() const
{
return mObserver;
}
PagePrivate *RotationJob::page() const
{
return m_pd;
}
NormalizedRect RotationJob::rect() const
{
return mRect;
}
bool RotationJob::isPartialUpdate() const
{
return mIsPartialUpdate;
}
QTransform RotationJob::rotationMatrix(Rotation from, Rotation to)
{
QTransform matrix;
if (from == Rotation0) {
if (to == Rotation90)
matrix.rotate(90);
else if (to == Rotation180)
matrix.rotate(180);
else if (to == Rotation270)
matrix.rotate(270);
} else if (from == Rotation90) {
if (to == Rotation180)
matrix.rotate(90);
else if (to == Rotation270)
matrix.rotate(180);
else if (to == Rotation0)
matrix.rotate(270);
} else if (from == Rotation180) {
if (to == Rotation270)
matrix.rotate(90);
else if (to == Rotation0)
matrix.rotate(180);
else if (to == Rotation90)
matrix.rotate(270);
} else if (from == Rotation270) {
if (to == Rotation0)
matrix.rotate(90);
else if (to == Rotation90)
matrix.rotate(180);
else if (to == Rotation180)
matrix.rotate(270);
}
return matrix;
}
RotationJobInternal::RotationJobInternal(const QImage &image, Rotation oldRotation, Rotation newRotation)
: mImage(image)
, mOldRotation(oldRotation)
, mNewRotation(newRotation)
{
}
QImage RotationJobInternal::image() const
{
return mRotatedImage;
}
Rotation RotationJobInternal::rotation() const
{
return mNewRotation;
}
void RotationJobInternal::run(ThreadWeaver::JobPointer self, ThreadWeaver::Thread *thread)
{
Q_UNUSED(self);
Q_UNUSED(thread);
if (mOldRotation == mNewRotation) {
mRotatedImage = mImage;
return;
}
const QTransform matrix = RotationJob::rotationMatrix(mOldRotation, mNewRotation);
mRotatedImage = mImage.transformed(matrix);
}
#include "moc_rotationjob_p.cpp"