1 files changed, 328 insertions, 0 deletions
diff --git a/chalk/plugins/paintops/defaultpaintops/kis_smudgeop.cpp b/chalk/plugins/paintops/defaultpaintops/kis_smudgeop.cpp
new file mode 100644
index 000000000..f15077b37
--- /dev/null
+++ b/chalk/plugins/paintops/defaultpaintops/kis_smudgeop.cpp
@@ -0,0 +1,328 @@
+/*
+ *  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 <tqrect.h>
+#include <tqwidget.h>
+#include <tqlayout.h>
+#include <tqlabel.h>
+#include <tqcheckbox.h>
+#include <tqtabwidget.h>
+#include <tqtoolbutton.h>
+#include <tqslider.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);
+    TQ_CHECK_PTR(op);
+    return op;
+}
+
+KisSmudgeOpSettings::KisSmudgeOpSettings(TQWidget *parent, bool isTablet)
+    : super(parent)
+{
+    m_optionsWidget = new TQWidget(parent, "brush option widget");
+    TQHBoxLayout * l = new TQHBoxLayout(m_optionsWidget);
+    l->setAutoAdd(true);
+    m_rateLabel = new TQLabel(i18n("Rate: "), m_optionsWidget);
+    m_rateSlider = new TQSlider(0,100,1, 50, Qt::Horizontal, m_optionsWidget);
+    if(isTablet)
+    {
+        m_pressureVariation = new TQLabel(i18n("Pressure variation: "), m_optionsWidget);
+        m_size =  new TQCheckBox(i18n("Size"), m_optionsWidget);
+        m_size->setChecked(true);
+        m_opacity = new TQCheckBox(i18n("Opacity"), m_optionsWidget);
+        m_rate =  new TQCheckBox(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."));
+        TQToolButton* moreButton = new TQToolButton(TQt::UpArrow, m_optionsWidget);
+        moreButton->setSizePolicy(TQSizePolicy::Expanding, TQSizePolicy::Expanding);
+        moreButton->setMinimumSize(TQSize(24,24)); // Bah, I had hoped the above line would make this unneeded
+        connect(moreButton, TQT_SIGNAL(clicked()), this, TQT_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() == TQDialog::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(TQWidget * 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.
+    TQ_INT32 x;
+    double xFraction;
+    TQ_INT32 y;
+    double yFraction;
+
+    splitCoordinate(pt.x(), &x, &xFraction);
+    splitCoordinate(pt.y(), &y, &yFraction);
+
+    KisPaintDeviceSP dab = 0;
+
+    TQ_UINT8 origOpacity = m_painter->opacity();
+
+    if (m_pressureOpacity) {
+        if (!m_customOpacity)
+            m_painter->setOpacity((TQ_INT8)(origOpacity * info.pressure));
+        else
+            m_painter->setOpacity((TQ_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);
+
+    TQRect dabRect = TQRect(0, 0, brush->maskWidth(adjustedInfo),
+                          brush->maskHeight(adjustedInfo));
+    TQRect dstRect = TQRect(x, y, dabRect.width(), dabRect.height());
+
+    KisImage * image = device->image();
+    
+    if (image != 0) {
+        dstRect &= image->bounds();
+    }
+    
+    TQ_INT32 sw = dab->extent().width();
+    TQ_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((TQ_UINT8)(double(opacity) * scaleToCurve(info.pressure, m_rateCurve)), OPACITY_TRANSPARENT, OPACITY_OPAQUE);
+            } else {
+                opacity = CLAMP((TQ_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;
+
+    TQ_INT32 sx = dstRect.x() - x;
+    TQ_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"