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koffice/krita/plugins/paintops/defaultpaintops/kis_smudgeop.cc

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/*
* Copyright (c) 2006 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 "kis_smudgeop.h"
#include <string.h>
#include <qrect.h>
#include <qwidget.h>
#include <qlayout.h>
#include <qlabel.h>
#include <qcheckbox.h>
#include <qtabwidget.h>
#include <qtoolbutton.h>
#include <qslider.h>
#include <kdebug.h>
#include "kis_colorspace_factory_registry.h"
#include "kcurve.h"
#include "kis_brush.h"
#include "kis_global.h"
#include "kis_paint_device.h"
#include "kis_layer.h"
#include "kis_meta_registry.h"
#include "kis_painter.h"
#include "kis_types.h"
#include "kis_paintop.h"
#include "kis_input_device.h"
#include "kis_selection.h"
#include "kis_dlgbrushcurvecontrol.h"
KisPaintOp * KisSmudgeOpFactory::createOp(const KisPaintOpSettings *settings, KisPainter * painter)
{
const KisSmudgeOpSettings *brushopSettings = dynamic_cast<const KisSmudgeOpSettings *>(settings);
Q_ASSERT(settings == 0 || brushopSettings != 0);
KisPaintOp * op = new KisSmudgeOp(brushopSettings, painter);
Q_CHECK_PTR(op);
return op;
}
KisSmudgeOpSettings::KisSmudgeOpSettings(QWidget *parent, bool isTablet)
: super(parent)
{
m_optionsWidget = new QWidget(parent, "brush option widget");
QHBoxLayout * l = new QHBoxLayout(m_optionsWidget);
l->setAutoAdd(true);
m_rateLabel = new QLabel(i18n("Rate: "), m_optionsWidget);
m_rateSlider = new QSlider(0,100,1, 50, Qt::Horizontal, m_optionsWidget);
if(isTablet)
{
m_pressureVariation = new QLabel(i18n("Pressure variation: "), m_optionsWidget);
m_size = new QCheckBox(i18n("Size"), m_optionsWidget);
m_size->setChecked(true);
m_opacity = new QCheckBox(i18n("Opacity"), m_optionsWidget);
m_rate = new QCheckBox(i18n("Rate"), m_optionsWidget);
m_curveControl = new WdgBrushCurveControl(m_optionsWidget);
// We abuse the darken curve here for rate
m_curveControl->tabWidget->setTabLabel(m_curveControl->tabWidget->page(2), i18n("Rate"));
m_curveControl->tabWidget->setTabToolTip(m_curveControl->tabWidget->page(2),
i18n("Modifies the rate. Bottom is 0% of the rate top is 100% of the original rate."));
QToolButton* moreButton = new QToolButton(Qt::UpArrow, m_optionsWidget);
moreButton->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
moreButton->setMinimumSize(QSize(24,24)); // Bah, I had hoped the above line would make this unneeded
connect(moreButton, SIGNAL(clicked()), this, SLOT(slotCustomCurves()));
} else {
m_pressureVariation = 0;
m_size = 0;
m_rate = 0;
m_opacity = 0;
m_curveControl = 0;
}
m_customRate = false;
m_customSize = false;
m_customOpacity = false;
// the curves will get filled in when the slot gets accepted
}
void KisSmudgeOpSettings::slotCustomCurves() {
if (m_curveControl->exec() == QDialog::Accepted) {
m_customRate = m_curveControl->darkenCheckbox->isChecked();
m_customSize = m_curveControl->sizeCheckbox->isChecked();
m_customOpacity = m_curveControl->opacityCheckbox->isChecked();
if (m_customRate) {
transferCurve(m_curveControl->darkenCurve, m_rateCurve);
}
if (m_customSize) {
transferCurve(m_curveControl->sizeCurve, m_sizeCurve);
}
if (m_customOpacity) {
transferCurve(m_curveControl->opacityCurve, m_opacityCurve);
}
}
}
void KisSmudgeOpSettings::transferCurve(KCurve* curve, double* target) {
double value;
for (int i = 0; i < 256; i++) {
value = curve->getCurveValue( i / 255.0);
if (value < PRESSURE_MIN)
target[i] = PRESSURE_MIN;
else if (value > PRESSURE_MAX)
target[i] = PRESSURE_MAX;
else
target[i] = value;
}
}
int KisSmudgeOpSettings::rate() const
{
return m_rateSlider->value();
}
bool KisSmudgeOpSettings::varyRate() const
{
return m_rate ? m_rate->isChecked() : false;
}
bool KisSmudgeOpSettings::varySize() const
{
return m_size ? m_size->isChecked() : true;
}
bool KisSmudgeOpSettings::varyOpacity() const
{
return m_opacity ? m_opacity->isChecked() : false;
}
KisPaintOpSettings* KisSmudgeOpFactory::settings(QWidget * parent, const KisInputDevice& inputDevice)
{
if (inputDevice == KisInputDevice::mouse()) {
// No options for mouse, only tablet devices
return new KisSmudgeOpSettings(parent, false);
} else {
return new KisSmudgeOpSettings(parent, true);
}
}
KisSmudgeOp::KisSmudgeOp(const KisSmudgeOpSettings *settings, KisPainter *painter)
: super(painter)
, m_firstRun(true)
, m_rate(50)
, m_pressureSize(true)
, m_pressureRate(false)
, m_pressureOpacity(false)
, m_customRate(false)
, m_customSize(false)
, m_customOpacity(false)
, m_target(0)
, m_srcdev(0)
{
if (settings != 0) {
m_rate = settings->rate();
m_pressureRate = settings->varyRate();
m_pressureSize = settings->varySize();
m_pressureOpacity = settings->varyOpacity();
m_customRate = settings->customRate();
m_customSize = settings->customSize();
m_customOpacity = settings->customOpacity();
if (m_customSize) {
memcpy(m_sizeCurve, settings->sizeCurve(), 256 * sizeof(double));
}
if (m_customOpacity) {
memcpy(m_opacityCurve, settings->opacityCurve(), 256 * sizeof(double));
}
if (m_customRate) {
memcpy(m_rateCurve, settings->rateCurve(), 256 * sizeof(double));
}
}
KisPaintDeviceSP device = m_painter->device();
m_srcdev = new KisPaintDevice(device->colorSpace(), "duplicate source dev");
m_target = new KisPaintDevice(device->colorSpace(), "duplicate target dev");
}
KisSmudgeOp::~KisSmudgeOp()
{
}
void KisSmudgeOp::paintAt(const KisPoint &pos, const KisPaintInformation& info)
{
KisPaintInformation adjustedInfo(info);
if (!m_pressureSize)
adjustedInfo.pressure = PRESSURE_DEFAULT;
else if (m_customSize)
adjustedInfo.pressure = scaleToCurve(adjustedInfo.pressure, m_sizeCurve);
// Painting should be implemented according to the following algorithm:
// retrieve brush
// if brush == mask
// retrieve mask
// else if brush == image
// retrieve image
// subsample (mask | image) for position -- pos should be double!
// apply filters to mask (colour | gradient | pattern | etc.
// composite filtered mask into temporary layer
// composite temporary layer into target layer
// @see: doc/brush.txt
if (!m_painter->device()) return;
KisBrush *brush = m_painter->brush();
Q_ASSERT(brush);
if (!brush) return;
if (! brush->canPaintFor(adjustedInfo) )
return;
KisPaintDeviceSP device = m_painter->device();
KisPoint hotSpot = brush->hotSpot(adjustedInfo);
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.
Q_INT32 x;
double xFraction;
Q_INT32 y;
double yFraction;
splitCoordinate(pt.x(), &x, &xFraction);
splitCoordinate(pt.y(), &y, &yFraction);
KisPaintDeviceSP dab = 0;
Q_UINT8 origOpacity = m_painter->opacity();
if (m_pressureOpacity) {
if (!m_customOpacity)
m_painter->setOpacity((Q_INT8)(origOpacity * info.pressure));
else
m_painter->setOpacity((Q_INT8)(origOpacity * scaleToCurve(info.pressure, m_opacityCurve)));
}
if (brush->brushType() == IMAGE || brush->brushType() == PIPE_IMAGE) {
dab = brush->image(device->colorSpace(), adjustedInfo, xFraction, yFraction);
dab->convertTo(KisMetaRegistry::instance()->csRegistry()->getAlpha8());
}
else {
KisAlphaMaskSP mask = brush->mask(adjustedInfo, xFraction, yFraction);
dab = computeDab(mask, KisMetaRegistry::instance()->csRegistry()->getAlpha8());
}
m_painter->setPressure(adjustedInfo.pressure);
QRect dabRect = QRect(0, 0, brush->maskWidth(adjustedInfo),
brush->maskHeight(adjustedInfo));
QRect dstRect = QRect(x, y, dabRect.width(), dabRect.height());
KisImage * image = device->image();
if (image != 0) {
dstRect &= image->bounds();
}
Q_INT32 sw = dab->extent().width();
Q_INT32 sh = dab->extent().height();
KisPainter copyPainter(m_srcdev);
int opacity = OPACITY_OPAQUE;
if(!m_firstRun)
{
opacity = rate();
if (m_pressureRate) {
if (m_customRate) {
opacity = CLAMP((Q_UINT8)(double(opacity) * scaleToCurve(info.pressure, m_rateCurve)), OPACITY_TRANSPARENT, OPACITY_OPAQUE);
} else {
opacity = CLAMP((Q_UINT8)(double(opacity) * info.pressure), OPACITY_TRANSPARENT, OPACITY_OPAQUE);
}
}
opacity = OPACITY_OPAQUE - opacity;
} else {
m_firstRun = false;
}
copyPainter.bitBlt(0, 0, COMPOSITE_OVER, device, opacity, pt.x(), pt.y(), sw, sh);
copyPainter.end();
m_target = new KisPaintDevice(device->colorSpace(), "duplicate target dev");
copyPainter.begin(m_target);
copyPainter.bltMask(0, 0, COMPOSITE_OVER, m_srcdev, dab,
OPACITY_OPAQUE, 0, 0, sw, sh);
copyPainter.end();
if (dstRect.isNull() || dstRect.isEmpty() || !dstRect.isValid()) return;
Q_INT32 sx = dstRect.x() - x;
Q_INT32 sy = dstRect.y() - y;
sw = dstRect.width();
sh = dstRect.height();
if (m_source->hasSelection()) {
m_painter->bltSelection(dstRect.x(), dstRect.y(), m_painter->compositeOp(), m_target,
m_source->selection(), m_painter->opacity(), sx, sy, sw, sh);
}
else {
m_painter->bitBlt(dstRect.x(), dstRect.y(), m_painter->compositeOp(), m_target, m_painter->opacity(), sx, sy, sw, sh);
}
m_painter->addDirtyRect(dstRect);
m_painter->setOpacity(origOpacity);
}
#include "kis_smudgeop.moc"
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