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/*
* Copyright (c) 2006 Bart Coppens <kde@bartcoppens.be>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef KIS_SHEAR_VISITOR_H_
#define KIS_SHEAR_VISITOR_H_
#include "kis_types.h"
#include "kis_progress_subject.h"
#include "kis_layer_visitor.h"
#include "kis_transform_worker.h"
#include "kis_filter_strategy.h"
#include "kis_undo_adapter.h"
#include "kis_transaction.h"
#include "kis_rotate_visitor.h"
class KisShearVisitor : public KisLayerVisitor {
public:
KisShearVisitor(double xshear, double yshear, KisProgressDisplayInterface *progress)
: m_xshear(xshear), m_yshear(yshear), m_progress(progress), m_strategy(0), m_undo(0) {};
void setStrategy(KisFilterStrategy* strategy) { m_strategy = strategy; }
void setUndoAdapter(KisUndoAdapter* undo) { m_undo = undo; }
public:
virtual bool visit(KisPaintLayer* layer) {
KisPaintDeviceSP dev = layer->paintDevice();
if(!dev)
return true;
KisFilterStrategy* strategy = 0;
if (m_strategy)
strategy = m_strategy;
else
strategy = new KisMitchellFilterStrategy;
KisTransaction* t = 0;
if (m_undo && m_undo->undo())
t = new KisTransaction("", dev.data());
//Doesn't do anything, internally transforms x and y shear to 0 each :-///
//KisTransformWorker w(dev, 1.0, 1.0, m_xshear, m_yshear, 0, 0, 0, m_progress, strategy);
//w.run();
KisRotateVisitor v;
v.visitKisPaintDevice(dev);
v.shear(m_xshear, m_yshear, m_progress);
if (m_undo && m_undo->undo())
m_undo->addCommand(t);
if (!m_strategy)
delete strategy;
layer->setDirty();
return true;
}
virtual bool visit(KisGroupLayer* layer) {
KisLayerSP child = layer->firstChild();
while(child)
{
child->accept(*this);
child = child->nextSibling();
}
return true;
}
virtual bool visit(KisPartLayer*) { return true; }
virtual bool visit(KisAdjustmentLayer *) { return true; }
private:
double m_xshear;
double m_yshear;
KisProgressDisplayInterface* m_progress;
KisFilterStrategy* m_strategy;
KisUndoAdapter* m_undo;
};
#endif // KIS_SHEAR_VISITOR_H_
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