diff --git a/plugins/dockers/artisticcolorselector/kis_color_selector.cpp b/plugins/dockers/artisticcolorselector/kis_color_selector.cpp
index 6c03e24f0a..570466ce83 100644
--- a/plugins/dockers/artisticcolorselector/kis_color_selector.cpp
+++ b/plugins/dockers/artisticcolorselector/kis_color_selector.cpp
@@ -1,1094 +1,1089 @@
 /*
     Copyright (C) 2011 Silvio Heinrich <plassy@web.de>
 
     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 <QPaintDevice>
 #include <QPainter>
 #include <QColor>
 #include <QBrush>
 #include <QPen>
 #include <QRadialGradient>
 #include <QConicalGradient>
 #include <QMouseEvent>
 #include <QResizeEvent>
 #include <QTransform>
 #include <QList>
 #include <cmath>
 
 #include <kis_config.h>
 #include <kis_arcs_constants.h>
 #include <resources/KoGamutMask.h>
 #include <KisGamutMaskViewConverter.h>
 
 #include "kis_color_selector.h"
 
 //#define DEBUG_ARC_SELECTOR
 
 KisColorSelector::KisColorSelector(QWidget* parent, KisColor::Type type)
     : QWidget(parent)
     , m_colorConverter(KisDisplayColorConverter::dumbConverterInstance())
     , m_colorSpace(type)
     , m_inverseSaturation(false)
     , m_selectedColor(m_colorConverter)
     , m_fgColor(m_colorConverter)
     , m_bgColor(m_colorConverter)
     , m_clickedRing(-1)
     , m_gamutMaskOn(false)
     , m_currentGamutMask(nullptr)
     , m_maskPreviewActive(true)
     , m_widgetUpdatesSelf(false)
 {
     m_viewConverter = new KisGamutMaskViewConverter();
 
     setLumaCoefficients(DEFAULT_LUMA_R, DEFAULT_LUMA_G, DEFAULT_LUMA_B,DEFAULT_LUMA_GAMMA);
 
     recalculateRings(DEFAULT_SATURATION_STEPS, DEFAULT_HUE_STEPS);
     recalculateAreas(DEFAULT_VALUE_SCALE_STEPS);
     selectColor(KisColor(Qt::red, m_colorConverter, KisColor::HSY, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma));
 
     using namespace std::placeholders; // For _1 placeholder
     auto function = std::bind(&KisColorSelector::slotUpdateColorAndPreview, this, _1);
     m_updateColorCompressor.reset(new ColorCompressorType(20 /* ms */, function));
 }
 
 void KisColorSelector::setColorSpace(KisColor::Type type)
 {
     m_colorSpace    = type;
     m_selectedColor = KisColor(m_selectedColor, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
 
 #ifdef DEBUG_ARC_SELECTOR
         dbgPlugins << "KisColorSelector::setColorSpace: set to:" << m_colorSpace;
 #endif
 
         update();
 }
 
 void KisColorSelector::setColorConverter(KisDisplayColorConverter *colorConverter)
 {
     m_colorConverter = colorConverter;
     update();
 }
 
 void KisColorSelector::setNumLightPieces(int num)
 {
     num = qBound(MIN_NUM_LIGHT_PIECES, num, MAX_NUM_LIGHT_PIECES);
 
     recalculateAreas(quint8(num));
 
     if (m_selectedLightPiece >= 0)
         m_selectedLightPiece = getLightIndex(m_selectedColor.getX());
 
     update();
 }
 
 void KisColorSelector::setNumPieces(int num)
 {
     num = qBound(MIN_NUM_HUE_PIECES, num, MAX_NUM_HUE_PIECES);
 
     recalculateRings(quint8(getNumRings()), quint8(num));
 
     if (m_selectedPiece >= 0)
         m_selectedPiece = getHueIndex(m_selectedColor.getH() * PI2);
 
     update();
 }
 
 void KisColorSelector::setNumRings(int num)
 {
     num = qBound(MIN_NUM_SATURATION_RINGS, num, MAX_NUM_SATURATION_RINGS);
 
     recalculateRings(quint8(num), quint8(getNumPieces()));
 
     if (m_selectedRing >= 0)
         m_selectedRing = getSaturationIndex(m_selectedColor.getS());
 
     update();
 }
 
 void KisColorSelector::selectColor(const KisColor& color)
 {
     m_selectedColor      = KisColor(color, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
     m_selectedPiece      = getHueIndex(m_selectedColor.getH() * PI2);
     m_selectedRing       = getSaturationIndex(m_selectedColor.getS());
     m_selectedLightPiece = getLightIndex(m_selectedColor.getX());
     update();
 }
 
 void KisColorSelector::setFgColor(const KoColor& fgColor)
 {
     if (!m_widgetUpdatesSelf) {
         m_fgColor = KisColor(fgColor, m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
         m_selectedColor = KisColor(fgColor, m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
 
 #ifdef DEBUG_ARC_SELECTOR
         dbgPlugins << "KisColorSelector::setFgColor: m_fgColor set to:"
                    << "H:" << m_fgColor.getH()
                    << "S:" << m_fgColor.getS()
                    << "X:" << m_fgColor.getX();
 
         dbgPlugins << "KisColorSelector::setFgColor: m_selectedColor set to:"
                    << "H:" << m_selectedColor.getH()
                    << "S:" << m_selectedColor.getS()
                    << "X:" << m_selectedColor.getX();
 #endif
         update();
     }
 }
 
 void KisColorSelector::setBgColor(const KoColor& bgColor)
 {
     if (!m_widgetUpdatesSelf) {
         m_bgColor = KisColor(bgColor, m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
 #ifdef DEBUG_ARC_SELECTOR
         dbgPlugins << "KisColorSelector::setBgColor: m_bgColor set to:"
                    << "H:" << m_bgColor.getH()
                    << "S:" << m_bgColor.getS()
                    << "X:" << m_bgColor.getX();
 #endif
         update();
     }
 }
 
 void KisColorSelector::setLight(qreal light)
 {
     m_selectedColor.setX(qBound(0.0, light, 1.0));
     m_selectedLightPiece = getLightIndex(m_selectedColor.getX());
     update();
 }
 
 void KisColorSelector::setLumaCoefficients(qreal lR, qreal lG, qreal lB, qreal lGamma)
 {
     m_lumaR = lR;
     m_lumaG = lG;
     m_lumaB = lB;
-
-    if (m_colorSpace == KisColor::HSY) {
-        m_lumaGamma = lGamma;
-    } else {
-        m_lumaGamma = 1.0;
-    }
+    m_lumaGamma = lGamma;
 
     m_selectedColor = KisColor(m_selectedColor, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
 
 #ifdef DEBUG_ARC_SELECTOR
         dbgPlugins << "KisColorSelector::setLumaCoefficients: " << m_lumaR
                    << " " << m_lumaG << " " << m_lumaB << " " << m_lumaGamma;
 #endif
 
     update();
 }
 
 void KisColorSelector::setInverseSaturation(bool inverse)
 {
     if (m_inverseSaturation != inverse) {
         m_selectedRing      = (getNumRings()-1) - m_selectedRing;
         m_inverseSaturation = inverse;
         recalculateRings(quint8(getNumRings()), quint8(getNumPieces()));
         update();
     }
 }
 
 void KisColorSelector::setGamutMask(KoGamutMask* gamutMask)
 {
     if (!gamutMask) {
         return;
     }
 
     m_currentGamutMask = gamutMask;
     m_viewConverter->setViewSize(m_renderAreaSize);
     m_viewConverter->setMaskSize(m_currentGamutMask->maskSize());
     update();
 }
 
 KoGamutMask* KisColorSelector::gamutMask()
 {
     return m_currentGamutMask;
 }
 
 bool KisColorSelector::gamutMaskOn()
 {
     return m_gamutMaskOn;
 }
 
 
 void KisColorSelector::setGamutMaskOn(bool gamutMaskOn)
 {
     if (m_currentGamutMask) {
         m_gamutMaskOn = gamutMaskOn;
         update();
     }
 }
 
 void KisColorSelector::setEnforceGamutMask(bool enforce)
 {
     m_enforceGamutMask = enforce;
     update();
 }
 
 QPointF KisColorSelector::mapCoordToView(const QPointF& pt, const QRectF& viewRect) const
 {
     qreal w = viewRect.width()  / 2.0;
     qreal h = viewRect.height() / 2.0;
 
     qreal x = pt.x() + 1.0;
     qreal y = (pt.y()) + 1.0;
 
     return QPointF(x*w, y*h);
 }
 
 QPointF KisColorSelector::mapCoordToUnit(const QPointF& pt, const QRectF& viewRect) const
 {
     qreal w = viewRect.width()  / 2.0;
     qreal h = viewRect.height() / 2.0;
     qreal x = pt.x() - (viewRect.x() + w);
     qreal y = pt.y() - (viewRect.y() + h);
     return QPointF(x/w, y/h);
 }
 
 QPointF KisColorSelector::mapColorToUnit(const KisColor& color, bool invertSaturation) const
 {
     qreal radius;
     if (invertSaturation && m_inverseSaturation) {
         radius = 1.0 - color.getS();
     } else {
         radius = color.getS();
     }
 
     QPointF hueCoord = mapHueToAngle(color.getH());
     qreal x = hueCoord.x()*radius;
     qreal y = hueCoord.y()*radius;
 
     return QPointF(x,y);
 }
 
 KisColorSelector::Radian KisColorSelector::mapCoordToAngle(qreal x, qreal y) const
 {
     qreal angle = std::atan2(-y, -x);
 
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::mapCoordToAngle: "
                << "X:" << x
                << "Y:" << y
                << "angle:" << angle;
 #endif
 
     return angle;
 }
 
 QPointF KisColorSelector::mapHueToAngle(qreal hue) const
 {
     qreal angle = hue * 2.0 * M_PI - M_PI;
     qreal x = std::cos(angle);
     qreal y = std::sin(angle);
 
     return QPointF(x,y);
 }
 
 
 qint8 KisColorSelector::getLightIndex(const QPointF& pt) const
 {
     if (m_lightStripArea.contains(pt.toPoint(), true)) {
         qreal t = (pt.x() - m_lightStripArea.x()) / qreal(m_lightStripArea.width());
         t = (pt.y() - m_lightStripArea.y()) / qreal(m_lightStripArea.height());
 
         return qint8(t * getNumLightPieces());
     }
 
     return -1;
 }
 
 qint8 KisColorSelector::getLightIndex(qreal light) const
 {
     light = qreal(1) - qBound(qreal(0), light, qreal(1));
     return qint8(qRound(light * (getNumLightPieces()-1)));
 }
 
 qreal KisColorSelector::getLight(const QPointF& pt) const
 {
     qint8 clickedLightPiece = getLightIndex(pt);
 
     if (clickedLightPiece >= 0) {
         if (getNumLightPieces() > 1) {
             return 1.0 - (qreal(clickedLightPiece) / qreal(getNumLightPieces()-1));
         }
         return 1.0 - (qreal(pt.y()) / qreal(m_lightStripArea.height()));
     }
 
     return qreal(0);
 }
 
 qint8 KisColorSelector::getHueIndex(Radian hue) const
 {
     qreal partSize = 1.0 / qreal(getNumPieces());
     return qint8(qRound(hue.scaled(0.0, 1.0) / partSize) % getNumPieces());
 }
 
 qreal KisColorSelector::getHue(int hueIdx, Radian shift) const
 {
     Radian hue = (qreal(hueIdx) / qreal(getNumPieces())) * PI2;
     hue += shift;
     return hue.scaled(0.0, 1.0);
 }
 
 qint8 KisColorSelector::getSaturationIndex(qreal saturation) const
 {
     saturation = qBound(qreal(0), saturation, qreal(1));
     saturation = m_inverseSaturation ? (qreal(1) - saturation) : saturation;
     return qint8(saturation * qreal(getNumRings() - 1));
 }
 
 qint8 KisColorSelector::getSaturationIndex(const QPointF& pt) const
 {
     qreal length = std::sqrt(pt.x()*pt.x() + pt.y()*pt.y());
 
     for(int i=0; i<m_colorRings.size(); ++i) {
         if (length >= m_colorRings[i].innerRadius && length < m_colorRings[i].outerRadius)
             return qint8(i);
     }
 
     return -1;
 }
 
 qreal KisColorSelector::getSaturation(int saturationIdx) const
 {
     qreal sat = qreal(saturationIdx) / qreal(getNumRings()-1);
     return m_inverseSaturation ? (1.0 - sat) : sat;
 }
 
 void KisColorSelector::recalculateAreas(quint8 numLightPieces)
 {
 
     qreal LIGHT_STRIP_RATIO = 0.075;
     if (m_showValueScaleNumbers) {
         LIGHT_STRIP_RATIO = 0.25;
     }
 
     int width      = QWidget::width();
     int height     = QWidget::height();
     int size       = qMin(width, height);
     int stripThick = int(size * LIGHT_STRIP_RATIO);
 
     width -= stripThick;
 
     size = qMin(width, height);
 
     int x = (width  - size) / 2;
     int y = (height - size) / 2;
 
     m_renderAreaSize = QSize(size,size);
     m_viewConverter->setViewSize(m_renderAreaSize);
 
     m_renderArea     = QRect(x+stripThick, y, size, size);
     m_lightStripArea = QRect(0, 0, stripThick, QWidget::height());
 
     m_renderBuffer   = QImage(size, size, QImage::Format_ARGB32_Premultiplied);
     m_maskBuffer   = QImage(size, size, QImage::Format_ARGB32_Premultiplied);
     m_numLightPieces = numLightPieces;
 }
 
 void KisColorSelector::recalculateRings(quint8 numRings, quint8 numPieces)
 {
     m_colorRings.resize(numRings);
     m_numPieces = numPieces;
 
     for(int i=0; i<numRings; ++i) {
         qreal innerRadius = qreal(i)   / qreal(numRings);
         qreal outerRadius = qreal(i+1) / qreal(numRings);
         qreal saturation  = qreal(i)   / qreal(numRings-1);
 
         createRing(m_colorRings[i], numPieces, innerRadius, outerRadius+0.001);
         m_colorRings[i].saturation = m_inverseSaturation ? (1.0 - saturation) : saturation;
     }
 }
 
 void KisColorSelector::createRing(ColorRing& ring, quint8 numPieces, qreal innerRadius, qreal outerRadius)
 {
     int numParts = qMax<int>(numPieces, 1);
 
     ring.innerRadius = innerRadius;
     ring.outerRadius = outerRadius;
     ring.pieced.resize(numParts);
 
     qreal  partSize = 360.0 / qreal(numParts);
     QRectF outerRect(-outerRadius, -outerRadius, outerRadius*2.0, outerRadius*2.0);
     QRectF innerRect(-innerRadius, -innerRadius, innerRadius*2.0, innerRadius*2.0);
 
     for(int i=0; i<numParts; ++i) {
         qreal aBeg  = partSize*i;
         qreal aEnd  = aBeg + partSize;
 
         aBeg -= partSize / 2.0;
         aEnd -= partSize / 2.0;
 
         ring.pieced[i] = QPainterPath();
         ring.pieced[i].arcMoveTo(innerRect, aBeg);
         ring.pieced[i].arcTo(outerRect, aBeg, partSize);
         ring.pieced[i].arcTo(innerRect, aEnd,-partSize);
     }
 }
 
 bool KisColorSelector::colorIsClear(const KisColor &color)
 {
     if (m_gamutMaskOn && m_currentGamutMask) {
 
         QPointF colorCoord = mapCoordToView(mapColorToUnit(color, false), m_renderArea);
         bool isClear = m_currentGamutMask->coordIsClear(colorCoord, *m_viewConverter, m_maskPreviewActive);
 
         if (isClear) {
             return true;
         } else {
             return false;
         }
 
     } else {
         return true;
     }
 
     return false;
 }
 
 
 void KisColorSelector::requestUpdateColorAndPreview(const KisColor &color, Acs::ColorRole role)
 {
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::requestUpdateColorAndPreview: requesting update to: "
                << "H:" << color.getH()
                << "S:" << color.getS()
                << "X:" << color.getX();
 #endif
     m_updateColorCompressor->start(qMakePair(color, role));
 }
 
 void KisColorSelector::slotUpdateColorAndPreview(QPair<KisColor, Acs::ColorRole> color)
 {
     const bool selectAsFgColor = color.second == Acs::Foreground;
 
     if (selectAsFgColor) { m_fgColor = color.first; }
     else                 { m_bgColor = color.first; }
 
     m_selectedColor     = color.first;
 
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::slotUpdateColorAndPreview: m_selectedColor set to:"
                << "H:" << m_selectedColor.getH()
                << "S:" << m_selectedColor.getS()
                << "X:" << m_selectedColor.getX();
 #endif
 
     if (selectAsFgColor) { emit sigFgColorChanged(m_selectedColor); }
     else                 { emit sigBgColorChanged(m_selectedColor); }
 }
 
 void KisColorSelector::drawRing(QPainter& painter, KisColorSelector::ColorRing& ring, const QRect& rect)
 {
     painter.save();
     painter.setRenderHint(QPainter::Antialiasing, true);
     painter.resetTransform();
     painter.translate(rect.width()/2, rect.height()/2);
 
     if (ring.pieced.size() > 1) {
         QTransform mirror;
         mirror.rotate(180, Qt::YAxis);
         painter.setTransform(mirror, true);
         painter.scale(rect.width()/2, rect.height()/2);
         QPen normalPen = QPen(QBrush(COLOR_NORMAL_OUTLINE), 0.005);
         QPen clearMaskPen = QPen(QBrush(COLOR_MASK_CLEAR), 0.005);
         QBrush brush(Qt::SolidPattern);
 
         for(int i=0; i<ring.pieced.size(); ++i) {
             qreal hue = qreal(i) / qreal(ring.pieced.size());
             hue = (hue >= 1.0) ? (hue - 1.0) : hue;
             hue = (hue <  0.0) ? (hue + 1.0) : hue;
 
             KisColor color(hue, m_colorConverter, m_colorSpace);
             color.setS(ring.saturation);
             color.setX(m_selectedColor.getX());
 
             if(m_gamutMaskOn && m_enforceGamutMask && colorIsClear(color)) {
                 painter.setPen(clearMaskPen);
             } else {
                 painter.setPen(normalPen);
             }
 
             if ((m_enforceGamutMask) && (!colorIsClear(color))) {
                 brush.setColor(COLOR_MASK_FILL);
             } else {
                 brush.setColor(color.toQColor());
             }
             painter.setBrush(brush);
 
             painter.drawPath(ring.pieced[i]);
         }
     }
     else {
         KisColor colors[7] = {
             KisColor(Qt::cyan   , m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma),
             KisColor(Qt::green  , m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma),
             KisColor(Qt::yellow , m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma),
             KisColor(Qt::red    , m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma),
             KisColor(Qt::magenta, m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma),
             KisColor(Qt::blue   , m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma),
             KisColor(Qt::cyan   , m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma)
         };
 
         QConicalGradient gradient(0, 0, 0);
 
         for(int i=0; i<=6; ++i) {
             qreal hue = qreal(i) / 6.0;
             colors[i].setS(ring.saturation);
             colors[i].setX(m_selectedColor.getX());
             gradient.setColorAt(hue, colors[i].toQColor());
         }
 
         painter.scale(rect.width()/2, rect.height()/2);
         painter.fillPath(ring.pieced[0], QBrush(gradient));
     }
 
     painter.restore();
 }
 
 void KisColorSelector::drawOutline(QPainter& painter, const QRect& rect)
 {
     painter.setRenderHint(QPainter::Antialiasing, true);
     painter.resetTransform();
     painter.translate(rect.x() + rect.width()/2, rect.y() + rect.height()/2);
     painter.scale(rect.width()/2, rect.height()/2);
 
     QPen normalPen = QPen(QBrush(COLOR_NORMAL_OUTLINE), 0.005);
     QPen selectedPen;
 
     painter.setPen(normalPen);
 
     if (getNumPieces() > 1) {
         if (m_selectedRing >= 0 && m_selectedPiece >= 0) {
             painter.resetTransform();
             painter.translate(rect.x() + rect.width()/2, rect.y() + rect.height()/2);
             QTransform mirror;
             mirror.rotate(180, Qt::YAxis);
             painter.setTransform(mirror, true);
             painter.scale(rect.width()/2, rect.height()/2);
 
             if (m_selectedColor.getX() < 0.55) {
                 selectedPen = QPen(QBrush(COLOR_SELECTED_LIGHT), 0.007);
             } else {
                 selectedPen = QPen(QBrush(COLOR_SELECTED_DARK), 0.007);
             }
 
             painter.setPen(selectedPen);
             painter.drawPath(m_colorRings[m_selectedRing].pieced[m_selectedPiece]);
         }
     }
     else {
         for(int i=0; i<getNumRings(); ++i) {
             qreal rad = m_colorRings[i].outerRadius;
             painter.drawEllipse(QRectF(-rad, -rad, rad*2.0, rad*2.0));
         }
 
         if (m_selectedRing >= 0) {
             qreal iRad = m_colorRings[m_selectedRing].innerRadius;
             qreal oRad = m_colorRings[m_selectedRing].outerRadius;
 
             if (m_selectedColor.getX() < 0.55) {
                 selectedPen = QPen(QBrush(COLOR_SELECTED_LIGHT), 0.005);
             } else {
                 selectedPen = QPen(QBrush(COLOR_SELECTED_DARK), 0.005);
             }
 
             painter.setPen(selectedPen);
             painter.drawEllipse(QRectF(-iRad, -iRad, iRad*2.0, iRad*2.0));
             painter.drawEllipse(QRectF(-oRad, -oRad, oRad*2.0, oRad*2.0));
 
             QPointF lineCoords = mapHueToAngle(m_selectedColor.getH());
             painter.drawLine(QPointF(lineCoords.x()*iRad, lineCoords.y()*iRad), QPointF(lineCoords.x()*oRad, lineCoords.y()*oRad));
         }
     }
 }
 
 void KisColorSelector::drawLightStrip(QPainter& painter, const QRect& rect)
 {
     qreal    penSize    = qreal(qMin(QWidget::width(), QWidget::height())) / 200.0;
     qreal    penSizeSmall = penSize / 1.2;
     QPen selectedPen;
 
     KisColor valueScaleColor(m_selectedColor, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
     KisColor grayScaleColor(Qt::gray, m_colorConverter, m_colorSpace, m_lumaR, m_lumaG, m_lumaB, m_lumaGamma);
     int rectSize = rect.height();
 
     painter.resetTransform();
     painter.save();
     painter.setRenderHint(QPainter::Antialiasing, true);
 
     QTransform matrix;
     matrix.translate(rect.x(), rect.y());
     matrix.scale(rect.width(), rect.height());
 
     qreal rectColorLeftX;
     qreal rectColorWidth;
 
     if (m_showValueScaleNumbers) {
         rectColorLeftX = 0.6;
         rectColorWidth = 0.4;
     } else {
         rectColorLeftX = 0.0;
         rectColorWidth = 1.0;
     }
 
     if (getNumLightPieces() > 1) {
         for(int i=0; i<getNumLightPieces(); ++i) {
             qreal  t1    = qreal(i)   / qreal(getNumLightPieces());
             qreal  t2    = qreal(i+1) / qreal(getNumLightPieces());
             qreal  light = 1.0 - (qreal(i) / qreal(getNumLightPieces()-1));
             qreal  diff  = t2 - t1;// + 0.001;
 
             QRectF rectColor = QRectF(rectColorLeftX, t1, rectColorWidth, diff);
             rectColor = matrix.mapRect(rectColor);
 
             valueScaleColor.setX(light);
             painter.fillRect(rectColor, valueScaleColor.toQColor());
 
             if (i == m_selectedLightPiece) {
                 if (light < 0.55) {
                     selectedPen = QPen(QBrush(COLOR_SELECTED_LIGHT), penSize);
                 } else {
                     selectedPen = QPen(QBrush(COLOR_SELECTED_DARK), penSize);
                 }
 
                 painter.setPen(selectedPen);
                 painter.drawRect(rectColor);
             }
         }
     } else {
         painter.setRenderHint(QPainter::Antialiasing, false);
 
         for(int i=0; i<rectSize; ++i) {
             int   y     = rect.y() + i;
             qreal light = 1.0 - (qreal(i) / qreal(rectSize-1));
             valueScaleColor.setX(light);
             painter.setPen(QPen(QBrush(valueScaleColor.toQColor()), penSize));
             painter.drawLine(rect.left(), y, rect.right(), y);
         }
     }
 
     // draw color blip
     painter.setRenderHint(QPainter::Antialiasing, false);
     // draw position of fg color value on the strip
     qreal fgColorValue = 1.0 - m_fgColor.getX();
 
     int y = rect.y() + int(rectSize * fgColorValue);
     painter.setPen(QPen(QBrush(COLOR_SELECTED_LIGHT), penSizeSmall));
     painter.drawLine(rect.left(), y, rect.right(), y);
     painter.setPen(QPen(QBrush(COLOR_SELECTED_DARK), penSizeSmall));
     painter.drawLine(rect.left(), y+2*penSizeSmall, rect.right(), y+2*penSizeSmall);
     // draw color blip
 
     if (m_showValueScaleNumbers) {
         painter.setRenderHint(QPainter::Antialiasing, true);
 
         int valueScalePieces = getNumLightPieces();
         if (getNumLightPieces() == 1) {
             valueScalePieces = 11;
         }
 
         QFont font = painter.font();
         QFontMetrics fm = painter.fontMetrics();
         while (fm.boundingRect("100%").width() > rect.width()*rectColorLeftX) {
             font.setPointSize(font.pointSize() - 1);
             painter.setFont(font);
             fm = painter.fontMetrics();
         }
 
         for(int i=0; i<valueScalePieces; ++i) {
             qreal  t1    = qreal(i)   / qreal(valueScalePieces);
             qreal  t2    = qreal(i+1) / qreal(valueScalePieces);
             qreal  light = 1.0 - (qreal(i) / qreal(valueScalePieces-1));
             qreal  diff  = t2 - t1;// + 0.001;
 
             grayScaleColor.setX(light);
 
             QRectF rectValue = QRectF(0.0, t1, rectColorLeftX, diff);
             rectValue = matrix.mapRect(rectValue);
 
             painter.fillRect(rectValue, grayScaleColor.toQColor());
 
             int valueNumber = 0;
             if (m_colorSpace == KisColor::HSY) {
                 valueNumber = 100 - round(pow(pow(grayScaleColor.getX(), m_lumaGamma), 1.0/2.2)*100);
             } else {
                 valueNumber = 100 - grayScaleColor.getX()*100;
             }
 
             if (valueNumber < 55) {
                 painter.setPen(QPen(QBrush(COLOR_DARK), penSize));
             } else {
                 painter.setPen(QPen(QBrush(COLOR_LIGHT), penSize));
             }
 
             painter.drawText(rectValue, Qt::AlignRight|Qt::AlignBottom, QString("%1%").arg(QString::number(valueNumber)));
         }
     }
 
     painter.restore();
 }
 
 void KisColorSelector::drawBlip(QPainter& painter, const QRect& rect)
 {
     painter.setRenderHint(QPainter::Antialiasing, true);
     painter.resetTransform();
     painter.translate(rect.x() + rect.width()/2, rect.y() + rect.height()/2);
     painter.scale(rect.width()/2, rect.height()/2);
 
     QPointF fgColorPos = mapColorToUnit(m_fgColor);
 
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::drawBlip: "
                << "colorPoint H:" << m_fgColor.getH() << " S:" << m_fgColor.getS()
                << "-> coord X:" << fgColorPos.x() << " Y:" << fgColorPos.y();
 #endif
 
     painter.setPen(QPen(QBrush(COLOR_SELECTED_DARK), 0.01));
     painter.drawEllipse(fgColorPos, 0.05, 0.05);
 
     painter.setPen(QPen(QBrush(COLOR_SELECTED_LIGHT), 0.01));
     painter.setBrush(m_fgColor.toQColor());
     painter.drawEllipse(fgColorPos, 0.04, 0.04);
 }
 
 void KisColorSelector::drawGamutMaskShape(QPainter &painter, const QRect &rect)
 {
     painter.save();
     painter.setRenderHint(QPainter::Antialiasing, true);
 
     painter.resetTransform();
     painter.translate(rect.width()/2, rect.height()/2);
     painter.scale(rect.width()/2, rect.height()/2);
 
     painter.setPen(Qt::NoPen);
     painter.setBrush(COLOR_MASK_FILL);
 
     painter.drawEllipse(QPointF(0,0), 1.0, 1.0);
 
     painter.resetTransform();
 
     painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
     m_currentGamutMask->paint(painter, *m_viewConverter, m_maskPreviewActive);
 
     painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
     m_currentGamutMask->paintStroke(painter, *m_viewConverter, m_maskPreviewActive);
 
     painter.restore();
 }
 
 void KisColorSelector::paintEvent(QPaintEvent* /*event*/)
 {
     // 0 red    -> (1,0,0)
     // 1 yellow -> (1,1,0)
     // 2 green  -> (0,1,0)
     // 3 cyan   -> (0,1,1)
     // 4 blue   -> (0,0,1)
     // 5 maenta -> (1,0,1)
     // 6 red    -> (1,0,0)
 
     m_renderBuffer.fill(0);
 
     QPainter imgPainter(&m_renderBuffer);
     QPainter wdgPainter(this);
 
     // draw the fg and bg color previews
     // QPainter settings must be saved and restored afterwards, otherwise the wheel drawing is totally broken
     wdgPainter.save();
     wdgPainter.setRenderHint(QPainter::Antialiasing, true);
 
     QRect fgRect(0, 0, QWidget::width(), QWidget::height());
     wdgPainter.fillRect(fgRect, m_fgColor.toQColor());
 
     int bgSide = qMin(QWidget::width()*0.15,QWidget::height()*0.15);
 
     if (m_showBgColor) {
         QPointF bgPolyPoints[3] = {
             QPointF(QWidget::width(), QWidget::height()),
             QPointF(QWidget::width()-bgSide, QWidget::height()),
             QPointF(QWidget::width(), QWidget::height()-bgSide)
         };
 
         wdgPainter.setBrush(m_bgColor.toQColor());
         wdgPainter.setPen(m_bgColor.toQColor());
         wdgPainter.drawPolygon(bgPolyPoints, 3);
     }
 
     wdgPainter.restore();
 
     for(int i=0; i<m_colorRings.size(); ++i)
         drawRing(imgPainter, m_colorRings[i], m_renderArea);
 
     wdgPainter.drawImage(m_renderArea, m_renderBuffer);
 
     // draw the mask either in continuous mode or in discrete mode when enforcing is turned off
     // if enforcing is turned on in discrete mode,
     // drawRing function takes care of delineating the mask swatches
     if (m_gamutMaskOn
             && ((getNumPieces() == 1) || (!m_enforceGamutMask))) {
 
         m_maskBuffer.fill(0);
         QPainter maskPainter(&m_maskBuffer);
         drawGamutMaskShape(maskPainter, m_renderArea);
 
         wdgPainter.drawImage(m_renderArea, m_maskBuffer);
     }
 
     drawOutline   (wdgPainter, m_renderArea);
     drawLightStrip(wdgPainter, m_lightStripArea);
     drawBlip (wdgPainter, m_renderArea);
 }
 
 void KisColorSelector::mousePressEvent(QMouseEvent* event)
 {
     m_widgetUpdatesSelf = true;
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::mousePressEvent: m_widgetUpdatesSelf = true";
 #endif
 
     m_clickPos       = mapCoordToUnit(event->localPos(), m_renderArea);
     m_mouseMoved     = false;
     m_pressedButtons = event->buttons();
     m_clickedRing    = getSaturationIndex(m_clickPos);
     Acs::ColorRole colorRole = Acs::buttonsToRole(Qt::NoButton, m_pressedButtons);
 
     qint8 clickedLightPiece = getLightIndex(event->localPos());
 
     if (clickedLightPiece >= 0) {
         setLight(getLight(event->localPos()));
         m_selectedLightPiece = clickedLightPiece;
         requestUpdateColorAndPreview(m_selectedColor, colorRole);
         m_mouseMoved   = true;
     }
     else if (m_clickedRing >= 0) {
         if (getNumPieces() == 1) {
             Radian angle = mapCoordToAngle(m_clickPos.x(), m_clickPos.y());
 
             KisColor color(m_colorConverter, m_colorSpace);
             color.setHSX(angle.scaled(0.0, 1.0)
                          , getSaturation(m_clickedRing)
                          , m_selectedColor.getX()
                          );
 
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::mousePressEvent: picked color: "
                << "H:" << color.getH()
                << "S:" << color.getS()
                << "X:" << color.getX();
 #endif
 
             if ((!m_enforceGamutMask) || colorIsClear(color)) {
                 m_selectedColor.setHSX(color.getH(), color.getS(), color.getX());
                 requestUpdateColorAndPreview(m_selectedColor, colorRole);
                 m_selectedRing = m_clickedRing;
                 m_mouseMoved   = true;
                 update();
             }
         }
     }
 }
 
 void KisColorSelector::mouseMoveEvent(QMouseEvent* event)
 {
     QPointF dragPos = mapCoordToUnit(event->localPos(), m_renderArea);
     qint8   clickedLightPiece = getLightIndex(event->localPos());
     Acs::ColorRole colorRole = Acs::buttonsToRole(Qt::NoButton, m_pressedButtons);
 
     if (clickedLightPiece >= 0) {
         setLight(getLight(event->localPos()));
         m_selectedLightPiece = clickedLightPiece;
         requestUpdateColorAndPreview(m_selectedColor, colorRole);
     }
 
     if (m_clickedRing < 0)
         return;
 
     if (getNumPieces() == 1) {
         Radian angle = mapCoordToAngle(dragPos.x(), dragPos.y());
         KisColor color(m_colorConverter, m_colorSpace);
         color.setHSX(angle.scaled(0.0, 1.0)
                      , getSaturation(m_clickedRing)
                      , m_selectedColor.getX()
                      );
 
         if ((!m_enforceGamutMask) || colorIsClear(color)) {
             m_selectedColor.setHSX(color.getH(), color.getS(), color.getX());
             requestUpdateColorAndPreview(m_selectedColor, colorRole);
         }
     }
 
     update();
 }
 
 void KisColorSelector::mouseReleaseEvent(QMouseEvent* /*event*/)
 {
     Acs::ColorRole colorRole = Acs::buttonsToRole(Qt::NoButton, m_pressedButtons);
 
     if (!m_mouseMoved && m_clickedRing >= 0) {
         Radian angle = mapCoordToAngle(m_clickPos.x(), m_clickPos.y());
         KisColor color(m_colorConverter, m_colorSpace);
 
         qint8 hueIndex = getHueIndex(angle);
 
         if (getNumPieces() > 1) {
             color.setH(getHue(hueIndex));
         } else {
             color.setH(angle.scaled(0.0, 1.0));
         }
 
         color.setS(getSaturation(m_clickedRing));
         color.setX(m_selectedColor.getX());
 
         if ((!m_enforceGamutMask) || colorIsClear(color)) {
             m_selectedColor.setHSX(color.getH(), color.getS(), color.getX());
             m_selectedPiece = hueIndex;
             m_selectedRing = m_clickedRing;
             requestUpdateColorAndPreview(m_selectedColor, colorRole);
         }
     }
     else if (m_mouseMoved)
         requestUpdateColorAndPreview(m_selectedColor, colorRole);
 
     m_clickedRing = -1;
 
     m_widgetUpdatesSelf = false;
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::ReleasePressEvent: m_widgetUpdatesSelf = false";
 #endif
 
     update();
 }
 
 void KisColorSelector::resizeEvent(QResizeEvent* /*event*/)
 {
     recalculateAreas(quint8(getNumLightPieces()));
 }
 
 void KisColorSelector::leaveEvent(QEvent* /*e*/)
 {
     m_widgetUpdatesSelf = false;
 #ifdef DEBUG_ARC_SELECTOR
     dbgPlugins << "KisColorSelector::leaveEvent: m_widgetUpdatesSelf = false";
 #endif
 }
 
 void KisColorSelector::saveSettings()
 {
     KisConfig cfg(false);
     cfg.writeEntry("ArtColorSel.ColorSpace" , qint32(m_colorSpace));
 
     cfg.writeEntry("ArtColorSel.lumaR", qreal(m_lumaR));
     cfg.writeEntry("ArtColorSel.lumaG", qreal(m_lumaG));
     cfg.writeEntry("ArtColorSel.lumaB", qreal(m_lumaB));
     cfg.writeEntry("ArtColorSel.lumaGamma", qreal(m_lumaGamma));
 
     cfg.writeEntry("ArtColorSel.NumRings"   , m_colorRings.size());
     cfg.writeEntry("ArtColorSel.RingPieces" , qint32(m_numPieces));
     cfg.writeEntry("ArtColorSel.LightPieces", qint32(m_numLightPieces));
 
     cfg.writeEntry("ArtColorSel.InversedSaturation", m_inverseSaturation);
     cfg.writeEntry("ArtColorSel.Light"             , m_selectedColor.getX());
 
     cfg.writeEntry("ArtColorSel.SelColorH", m_selectedColor.getH());
     cfg.writeEntry("ArtColorSel.SelColorS", m_selectedColor.getS());
     cfg.writeEntry("ArtColorSel.SelColorX", m_selectedColor.getX());
 
     cfg.writeEntry("ArtColorSel.defaultHueSteps", quint32(m_defaultHueSteps));
     cfg.writeEntry("ArtColorSel.defaultSaturationSteps", quint32(m_defaultSaturationSteps));
     cfg.writeEntry("ArtColorSel.defaultValueScaleSteps", quint32(m_defaultValueScaleSteps));
 
     cfg.writeEntry("ArtColorSel.showBgColor", m_showBgColor);
     cfg.writeEntry("ArtColorSel.showValueScale", m_showValueScaleNumbers);
     cfg.writeEntry("ArtColorSel.enforceGamutMask", m_enforceGamutMask);
 }
 
 void KisColorSelector::loadSettings()
 {
     KisConfig cfg(true);
 
     m_defaultHueSteps = cfg.readEntry("ArtColorSel.defaultHueSteps", DEFAULT_HUE_STEPS);
     m_defaultSaturationSteps = cfg.readEntry("ArtColorSel.defaultSaturationSteps", DEFAULT_SATURATION_STEPS);
     m_defaultValueScaleSteps = cfg.readEntry("ArtColorSel.defaultValueScaleSteps", DEFAULT_VALUE_SCALE_STEPS);
 
     setNumLightPieces(cfg.readEntry("ArtColorSel.LightPieces", DEFAULT_VALUE_SCALE_STEPS));
 
     KisColor::Type colorSpace = KisColor::Type(cfg.readEntry<qint32>("ArtColorSel.ColorSpace" , KisColor::HSY));
 
     setColorSpace(colorSpace);
 
     setLumaCoefficients(cfg.readEntry("ArtColorSel.lumaR", DEFAULT_LUMA_R),
                         cfg.readEntry("ArtColorSel.lumaG", DEFAULT_LUMA_G),
                         cfg.readEntry("ArtColorSel.lumaB", DEFAULT_LUMA_B),
                         cfg.readEntry("ArtColorSel.lumaGamma", DEFAULT_LUMA_GAMMA));
 
     m_selectedColor.setH(cfg.readEntry<qreal>("ArtColorSel.SelColorH", 0.0));
     m_selectedColor.setS(cfg.readEntry<qreal>("ArtColorSel.SelColorS", 0.0));
     m_selectedColor.setX(cfg.readEntry<qreal>("ArtColorSel.SelColorX", 0.0));
 
     setInverseSaturation(cfg.readEntry<bool>("ArtColorSel.InversedSaturation", false));
     setLight(cfg.readEntry<qreal>("ArtColorSel.Light", 0.5f));
 
     setNumRings(cfg.readEntry("ArtColorSel.NumRings", DEFAULT_SATURATION_STEPS));
     setNumPieces(cfg.readEntry("ArtColorSel.RingPieces", DEFAULT_HUE_STEPS));
 
     m_showBgColor = cfg.readEntry("ArtColorSel.showBgColor", true);
     m_showValueScaleNumbers = cfg.readEntry("ArtColorSel.showValueScale", false);
     m_enforceGamutMask = cfg.readEntry("ArtColorSel.enforceGamutMask", false);
 
     selectColor(m_selectedColor);
     update();
 }
 
 void KisColorSelector::setDefaultHueSteps(int num)
 {
     num = qBound(MIN_NUM_HUE_PIECES, num, MAX_NUM_HUE_PIECES);
     m_defaultHueSteps = num;
 }
 
 void KisColorSelector::setDefaultSaturationSteps(int num)
 {
     num = qBound(MIN_NUM_SATURATION_RINGS, num, MAX_NUM_SATURATION_RINGS);
     m_defaultSaturationSteps = num;
 }
 
 void KisColorSelector::setDefaultValueScaleSteps(int num)
 {
     num = qBound(MIN_NUM_LIGHT_PIECES, num, MAX_NUM_LIGHT_PIECES);
     m_defaultValueScaleSteps = num;
 }
 
 void KisColorSelector::setShowBgColor(bool value)
 {
     m_showBgColor = value;
     update();
 }
 
 void KisColorSelector::setShowValueScaleNumbers(bool value)
 {
     m_showValueScaleNumbers = value;
     recalculateAreas(quint8(getNumLightPieces()));
     update();
 }
 
 bool KisColorSelector::saturationIsInvertible()
 {
     if (!m_gamutMaskOn) return true;
     bool b = (m_enforceGamutMask && getNumPieces() == 1) ? false : true;
     return b;
 }