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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 "klocale.h"
#include "kis_layer.h"
#include "kis_painter.h"
#include "kis_types.h"
#include "kis_paintop.h"
#include "kis_iterator.h"
#include "kis_selection.h"
#include "kis_iterators_pixel.h"
#include "kis_penop.h"
KisPaintOp * KisPenOpFactory::createOp(const KisPaintOpSettings */*settings*/, KisPainter * painter)
{
KisPaintOp * op = new KisPenOp(painter);
TQ_CHECK_PTR(op);
return op;
}
KisPenOp::KisPenOp(KisPainter * painter)
: super(painter)
{
}
KisPenOp::~KisPenOp()
{
}
void KisPenOp::paintAt(const KisPoint &pos, const KisPaintInformation& info)
{
if (!m_painter) return;
KisPaintDeviceSP device = m_painter->device();
if (!device) return;
KisBrush * brush = m_painter->brush();
if (!brush) return;
if (! brush->canPaintFor(info) )
return;
KisPoint hotSpot = brush->hotSpot(info);
KisPoint pt = pos - hotSpot;
TQ_INT32 x = pt.roundX();
TQ_INT32 y = pt.roundY();
KisPaintDeviceSP dab = 0;
if (brush->brushType() == IMAGE ||
brush->brushType() == PIPE_IMAGE) {
dab = brush->image(device->colorSpace(), info);
}
else {
// Compute mask without sub-pixel positioning
KisAlphaMaskSP mask = brush->mask(info);
dab = computeDab(mask);
}
m_painter->setPressure(info.pressure);
TQRect dabRect = TQRect(0, 0, brush->maskWidth(info), brush->maskHeight(info));
TQRect dstRect = TQRect(x, y, dabRect.width(), dabRect.height());
KisImage * image = device->image();
if (image != 0) {
dstRect &= image->bounds();
}
if (dstRect.isNull() || dstRect.isEmpty() || !dstRect.isValid()) return;
KisColorSpace * cs = dab->colorSpace();
// Set all alpha > opaque/2 to opaque, the rest to transparent.
// XXX: Using 4/10 as the 1x1 circle brush paints nothing with 0.5.
KisRectIteratorPixel pixelIt = dab->createRectIterator(dabRect.x(), dabRect.y(), dabRect.width(), dabRect.height(), true);
while (!pixelIt.isDone()) {
TQ_UINT8 alpha = cs->getAlpha(pixelIt.rawData());
if (alpha < (4 * OPACITY_OPAQUE) / 10) {
cs->setAlpha(pixelIt.rawData(), OPACITY_TRANSPARENT, 1);
} else {
cs->setAlpha(pixelIt.rawData(), OPACITY_OPAQUE, 1);
}
++pixelIt;
}
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(), dab.data(),
m_source->selection(), m_painter->opacity(), sx, sy, sw, sh);
}
else {
m_painter->bitBlt(dstRect.x(), dstRect.y(), m_painter->compositeOp(), dab.data(), m_painter->opacity(), sx, sy, sw, sh);
}
m_painter->addDirtyRect(dstRect);
}
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