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/*
* Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
* Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org>
* Copyright (c) 2004 Clarence Dang <dang@kde.org>
* Copyright (c) 2004 Adrian Page <adrian@pagenet.plus.com>
* Copyright (c) 2004 Cyrille Berger <cberger@cberger.net>
*
* 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.
*/
#include <tqrect.h>
#include <kdebug.h>
#include "kis_brush.h"
#include "kis_global.h"
#include "kis_paint_device.h"
#include "kis_painter.h"
#include "kis_types.h"
#include "kis_iterators_pixel.h"
#include "kis_paintop.h"
#include "kis_colorspace.h"
#include "kis_selection.h"
#include "kis_filterop.h"
KisPaintOp * KisFilterOpFactory::createOp(const KisPaintOpSettings */*settings*/, KisPainter * painter)
{
KisPaintOp * op = new KisFilterOp(painter);
return op;
}
KisFilterOp::KisFilterOp(KisPainter * painter)
: super(painter)
{
m_filterConfiguration = 0;
}
KisFilterOp::~KisFilterOp()
{
delete m_filterConfiguration;
}
void KisFilterOp::paintAt(const KisPoint &pos, const KisPaintInformation& info)
{
if (!m_painter) return;
KisFilterSP filter = m_painter->filter();
if (!filter) return;
if ( ! m_source ) return;
KisBrush * brush = m_painter->brush();
if (!brush) return;
KisColorSpace * colorSpace = m_source->colorSpace();
KisPoint hotSpot = brush->hotSpot(info);
KisPoint pt = pos - hotSpot;
// Split the coordinates into integer plus fractional parts. The integer
// is where the dab will be positioned and the fractional part determines
// the sub-pixel positioning.
TQ_INT32 x;
double xFraction;
TQ_INT32 y;
double yFraction;
splitCoordinate(pt.x(), &x, &xFraction);
splitCoordinate(pt.y(), &y, &yFraction);
// Filters always work with a mask, never with an image; that
// wouldn't be useful at all.
KisAlphaMaskSP mask = brush->mask(info, xFraction, yFraction);
m_painter->setPressure(info.pressure);
TQ_INT32 maskWidth = mask->width();
TQ_INT32 maskHeight = mask->height();
// Create a temporary paint device
KisPaintDeviceSP tmpDev = new KisPaintDevice(colorSpace, "filterop tmpdev");
TQ_CHECK_PTR(tmpDev);
// Copy the layer data onto the new paint device
KisPainter p( tmpDev );
p.bitBlt( 0, 0, COMPOSITE_COPY, m_source, OPACITY_OPAQUE, x, y, maskWidth, maskHeight );
// Filter the paint device
filter->disableProgress();
filter->process( tmpDev, tmpDev, m_filterConfiguration, TQRect( 0, 0, maskWidth, maskHeight ));
filter->enableProgress();
// Apply the mask on the paint device (filter before mask because edge pixels may be important)
for (int y = 0; y < maskHeight; y++)
{
KisHLineIterator hiter = tmpDev->createHLineIterator(0, y, maskWidth, false);
int x=0;
while(! hiter.isDone())
{
TQ_UINT8 alpha = mask->alphaAt( x++, y );
colorSpace->setAlpha(hiter.rawData(), alpha, 1);
++hiter;
}
}
// Blit the paint device onto the layer
TQRect dabRect = TQRect(0, 0, maskWidth, maskHeight);
TQRect dstRect = TQRect(x, y, dabRect.width(), dabRect.height());
KisImage * image = m_painter->device()->image();
if (image != 0) {
dstRect &= image->bounds();
}
if (dstRect.isNull() || dstRect.isEmpty() || !dstRect.isValid()) return;
TQ_INT32 sx = dstRect.x() - x;
TQ_INT32 sy = dstRect.y() - y;
TQ_INT32 sw = dstRect.width();
TQ_INT32 sh = dstRect.height();
if (m_source->hasSelection()) {
m_painter->bltSelection(dstRect.x(), dstRect.y(), m_painter->compositeOp(), tmpDev.data(),
m_source->selection(), m_painter->opacity(), sx, sy, sw, sh);
}
else {
m_painter->bitBlt(dstRect.x(), dstRect.y(), m_painter->compositeOp(), tmpDev.data(), m_painter->opacity(), sx, sy, sw, sh);
}
m_painter->addDirtyRect(dstRect);
}
void KisFilterOp::setFilterConfiguration(KisFilterConfiguration* filterConfiguration)
{
delete m_filterConfiguration;
m_filterConfiguration = filterConfiguration;
}
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